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bcachefs changes for 6.11-rc1 (version 2)

Browse Source 
Additional fixes on top of the original 6.11 pull request:
 - undefined behaviour fixes, originally noted as breaking userspace LTO
   builds
 - fix a spurious warning in fsck_err, reported by Marcin
 - fix an integer overflow on trans->nr_updates, also reported by Marcin;
   this broke during deletion of highly fragmented indirect extents
 - Add comments for lockdep functions
 
 ======
 
 - Metadata version 1.8: Stripe sectors accounting, BCH_DATA_unstriped
 
 This splits out the accounting of dirty sectors and stripe sectors in
 alloc keys; this lets us see stripe buckets that still have unstriped
 data in them.
 
 This is needed for ensuring that erasure coding is working correctly, as
 well as completing stripe creation after a crash.
 
 - Metadata version 1.9: Disk accounting rewrite
 
 The previous disk accounting scheme relied heavily on percpu counters
 that were also sharded by outstanding journal buffer; it was fast but
 not extensible or scalable, and meant that all accounting counters were
 recorded in every journal entry.
 
 The new disk accounting scheme stores accounting as normal btree keys;
 updates are deltas until they are flushed by the btree write buffer.
 
 This means we have no practical limit on the number of counters, and a
 new tagged union format that's easy to extend.
 
 We now have counters for compression type/ratio, per-snapshot-id usage,
 per-btree-id usage, and pending rebalance work.
 
 - Self healing on read IO/checksum error
 
 data is now automatically rewritten if we get a read error and then a
 successful retry
 
 - Mount API conversion (thanks to Thomas Bertschinger)
 
 - Better lockdep coverage
 
 Previously, btree node locks were tracked individually by lockdep, like
 any other lock. But we may take _many_ btree node locks simultaneously,
 we easily blow through the limit of 48 locks that lockdep can track,
 leading to lockdep turning itself off.
 
 Tracking each btree node lock individually isn't really necessary since
 we have our own cycle detector for deadlock avoidance and centralized
 tracking of btree node locks, so we now have a single lockdep_map in
 btree_trans for "any btree nodes are locked".
 
 - some more small incremental work towards online check_allocations
 
 - lots more debugging improvements, fixes
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Merge tag 'bcachefs-2024-07-18.2' of https://evilpiepirate.org/git/bcachefs

Pull bcachefs updates from Kent Overstreet:

 - Metadata version 1.8: Stripe sectors accounting, BCH_DATA_unstriped

   This splits out the accounting of dirty sectors and stripe sectors in
   alloc keys; this lets us see stripe buckets that still have unstriped
   data in them.

   This is needed for ensuring that erasure coding is working correctly,
   as well as completing stripe creation after a crash.

 - Metadata version 1.9: Disk accounting rewrite

   The previous disk accounting scheme relied heavily on percpu counters
   that were also sharded by outstanding journal buffer; it was fast but
   not extensible or scalable, and meant that all accounting counters
   were recorded in every journal entry.

   The new disk accounting scheme stores accounting as normal btree
   keys; updates are deltas until they are flushed by the btree write
   buffer.

   This means we have no practical limit on the number of counters, and
   a new tagged union format that's easy to extend.

   We now have counters for compression type/ratio, per-snapshot-id
   usage, per-btree-id usage, and pending rebalance work.

 - Self healing on read IO/checksum error

   Data is now automatically rewritten if we get a read error and then a
   successful retry

 - Mount API conversion (thanks to Thomas Bertschinger)

 - Better lockdep coverage

   Previously, btree node locks were tracked individually by lockdep,
   like any other lock. But we may take _many_ btree node locks
   simultaneously, we easily blow through the limit of 48 locks that
   lockdep can track, leading to lockdep turning itself off.

   Tracking each btree node lock individually isn't really necessary
   since we have our own cycle detector for deadlock avoidance and
   centralized tracking of btree node locks, so we now have a single
   lockdep_map in btree_trans for "any btree nodes are locked".

 - Some more small incremental work towards online check_allocations

 - Lots more debugging improvements

 - Fixes, including:
    - undefined behaviour fixes, originally noted as breaking userspace
      LTO builds
    - fix a spurious warning in fsck_err, reported by Marcin
    - fix an integer overflow on trans->nr_updates, also reported by
      Marcin; this broke during deletion of highly fragmented indirect
      extents

* tag 'bcachefs-2024-07-18.2' of https://evilpiepirate.org/git/bcachefs: (120 commits)
  lockdep: Add comments for lockdep_set_no{validate,track}_class()
  bcachefs: Fix integer overflow on trans->nr_updates
  bcachefs: silence silly kdoc warning
  bcachefs: Fix fsck warning about btree_trans not passed to fsck error
  bcachefs: Add an error message for insufficient rw journal devs
  bcachefs: varint: Avoid left-shift of a negative value
  bcachefs: darray: Don't pass NULL to memcpy()
  bcachefs: Kill bch2_assert_btree_nodes_not_locked()
  bcachefs: Rename BCH_WRITE_DONE -> BCH_WRITE_SUBMITTED
  bcachefs: __bch2_read(): call trans_begin() on every loop iter
  bcachefs: show none if label is not set
  bcachefs: drop packed, aligned from bkey_inode_buf
  bcachefs: btree node scan: fall back to comparing by journal seq
  bcachefs: Add lockdep support for btree node locks
  lockdep: lockdep_set_notrack_class()
  bcachefs: Improve copygc_wait_to_text()
  bcachefs: Convert clock code to u64s
  bcachefs: Improve startup message
  bcachefs: Self healing on read IO error
  bcachefs: Make read_only a mount option again, but hidden
  ...
This commit is contained in:
Linus Torvalds 2024-07-18 17:27:43 -07:00
commit 720261cfc7
115 changed files with 3915 additions and 2690 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
MAINTAINERS
View File

@ -3720,7 +3720,6 @@ F: drivers/md/bcache/
BCACHEFS
M: Kent Overstreet <kent.overstreet@linux.dev>
R: Brian Foster <bfoster@redhat.com>
L: linux-bcachefs@vger.kernel.org
S: Supported
C: irc://irc.oftc.net/bcache

3
fs/bcachefs/Makefile
View File

@ -29,10 +29,11 @@ bcachefs-y := \
clock.o \
compress.o \
darray.o \
data_update.o \
debug.o \
dirent.o \
disk_accounting.o \
disk_groups.o \
data_update.o \
ec.o \
errcode.o \
error.o \

4
fs/bcachefs/acl.c
View File

@ -346,7 +346,6 @@ int bch2_set_acl(struct mnt_idmap *idmap,
{
struct bch_inode_info *inode = to_bch_ei(dentry->d_inode);
struct bch_fs *c = inode->v.i_sb->s_fs_info;
struct btree_trans *trans = bch2_trans_get(c);
struct btree_iter inode_iter = { NULL };
struct bch_inode_unpacked inode_u;
struct posix_acl *acl;
@ -354,6 +353,7 @@ int bch2_set_acl(struct mnt_idmap *idmap,
int ret;
mutex_lock(&inode->ei_update_lock);
struct btree_trans *trans = bch2_trans_get(c);
retry:
bch2_trans_begin(trans);
acl = _acl;
@ -394,8 +394,8 @@ btree_err:
set_cached_acl(&inode->v, type, acl);
err:
mutex_unlock(&inode->ei_update_lock);
bch2_trans_put(trans);
mutex_unlock(&inode->ei_update_lock);
return ret;
}

189
fs/bcachefs/alloc_background.c
View File

@ -15,6 +15,7 @@
#include "buckets_waiting_for_journal.h"
#include "clock.h"
#include "debug.h"
#include "disk_accounting.h"
#include "ec.h"
#include "error.h"
#include "lru.h"
@ -268,27 +269,41 @@ int bch2_alloc_v4_invalid(struct bch_fs *c, struct bkey_s_c k,
i == READ ? "read" : "write",
a.v->io_time[i], LRU_TIME_MAX);
unsigned stripe_sectors = BCH_ALLOC_V4_BACKPOINTERS_START(a.v) * sizeof(u64) >
offsetof(struct bch_alloc_v4, stripe_sectors)
? a.v->stripe_sectors
: 0;
switch (a.v->data_type) {
case BCH_DATA_free:
case BCH_DATA_need_gc_gens:
case BCH_DATA_need_discard:
bkey_fsck_err_on(bch2_bucket_sectors_total(*a.v) || a.v->stripe,
bkey_fsck_err_on(stripe_sectors ||
a.v->dirty_sectors ||
a.v->cached_sectors ||
a.v->stripe,
c, err, alloc_key_empty_but_have_data,
"empty data type free but have data");
"empty data type free but have data %u.%u.%u %u",
stripe_sectors,
a.v->dirty_sectors,
a.v->cached_sectors,
a.v->stripe);
break;
case BCH_DATA_sb:
case BCH_DATA_journal:
case BCH_DATA_btree:
case BCH_DATA_user:
case BCH_DATA_parity:
bkey_fsck_err_on(!bch2_bucket_sectors_dirty(*a.v),
bkey_fsck_err_on(!a.v->dirty_sectors &&
!stripe_sectors,
c, err, alloc_key_dirty_sectors_0,
"data_type %s but dirty_sectors==0",
bch2_data_type_str(a.v->data_type));
break;
case BCH_DATA_cached:
bkey_fsck_err_on(!a.v->cached_sectors ||
bch2_bucket_sectors_dirty(*a.v) ||
a.v->dirty_sectors ||
stripe_sectors ||
a.v->stripe,
c, err, alloc_key_cached_inconsistency,
"data type inconsistency");
@ -319,6 +334,7 @@ void bch2_alloc_v4_swab(struct bkey_s k)
a->stripe = swab32(a->stripe);
a->nr_external_backpointers = swab32(a->nr_external_backpointers);
a->fragmentation_lru = swab64(a->fragmentation_lru);
a->stripe_sectors = swab32(a->stripe_sectors);
bps = alloc_v4_backpointers(a);
for (bp = bps; bp < bps + BCH_ALLOC_V4_NR_BACKPOINTERS(a); bp++) {
@ -343,6 +359,7 @@ void bch2_alloc_to_text(struct printbuf *out, struct bch_fs *c, struct bkey_s_c
prt_printf(out, "need_discard %llu\n", BCH_ALLOC_V4_NEED_DISCARD(a));
prt_printf(out, "need_inc_gen %llu\n", BCH_ALLOC_V4_NEED_INC_GEN(a));
prt_printf(out, "dirty_sectors %u\n", a->dirty_sectors);
prt_printf(out, "stripe_sectors %u\n", a->stripe_sectors);
prt_printf(out, "cached_sectors %u\n", a->cached_sectors);
prt_printf(out, "stripe %u\n", a->stripe);
prt_printf(out, "stripe_redundancy %u\n", a->stripe_redundancy);
@ -460,7 +477,8 @@ err:
}
__flatten
struct bkey_i_alloc_v4 *bch2_trans_start_alloc_update(struct btree_trans *trans, struct bpos pos)
struct bkey_i_alloc_v4 *bch2_trans_start_alloc_update(struct btree_trans *trans, struct bpos pos,
enum btree_iter_update_trigger_flags flags)
{
struct btree_iter iter;
struct bkey_i_alloc_v4 *a = bch2_trans_start_alloc_update_noupdate(trans, &iter, pos);
@ -468,7 +486,7 @@ struct bkey_i_alloc_v4 *bch2_trans_start_alloc_update(struct btree_trans *trans,
if (ret)
return ERR_PTR(ret);
ret = bch2_trans_update(trans, &iter, &a->k_i, 0);
ret = bch2_trans_update(trans, &iter, &a->k_i, flags);
bch2_trans_iter_exit(trans, &iter);
return unlikely(ret) ? ERR_PTR(ret) : a;
}
@ -579,8 +597,6 @@ int bch2_alloc_read(struct bch_fs *c)
struct bch_dev *ca = NULL;
int ret;
down_read(&c->gc_lock);
if (c->sb.version_upgrade_complete >= bcachefs_metadata_version_bucket_gens) {
ret = for_each_btree_key(trans, iter, BTREE_ID_bucket_gens, POS_MIN,
BTREE_ITER_prefetch, k, ({
@ -629,7 +645,6 @@ int bch2_alloc_read(struct bch_fs *c)
bch2_dev_put(ca);
bch2_trans_put(trans);
up_read(&c->gc_lock);
bch_err_fn(c, ret);
return ret;
@ -744,6 +759,61 @@ static noinline int bch2_bucket_gen_update(struct btree_trans *trans,
return ret;
}
static inline int bch2_dev_data_type_accounting_mod(struct btree_trans *trans, struct bch_dev *ca,
enum bch_data_type data_type,
s64 delta_buckets,
s64 delta_sectors,
s64 delta_fragmented, unsigned flags)
{
struct disk_accounting_pos acc = {
.type = BCH_DISK_ACCOUNTING_dev_data_type,
.dev_data_type.dev = ca->dev_idx,
.dev_data_type.data_type = data_type,
};
s64 d[3] = { delta_buckets, delta_sectors, delta_fragmented };
return bch2_disk_accounting_mod(trans, &acc, d, 3, flags & BTREE_TRIGGER_gc);
}
int bch2_alloc_key_to_dev_counters(struct btree_trans *trans, struct bch_dev *ca,
const struct bch_alloc_v4 *old,
const struct bch_alloc_v4 *new,
unsigned flags)
{
s64 old_sectors = bch2_bucket_sectors(*old);
s64 new_sectors = bch2_bucket_sectors(*new);
if (old->data_type != new->data_type) {
int ret = bch2_dev_data_type_accounting_mod(trans, ca, new->data_type,
1, new_sectors, bch2_bucket_sectors_fragmented(ca, *new), flags) ?:
bch2_dev_data_type_accounting_mod(trans, ca, old->data_type,
-1, -old_sectors, -bch2_bucket_sectors_fragmented(ca, *old), flags);
if (ret)
return ret;
} else if (old_sectors != new_sectors) {
int ret = bch2_dev_data_type_accounting_mod(trans, ca, new->data_type,
0,
new_sectors - old_sectors,
bch2_bucket_sectors_fragmented(ca, *new) -
bch2_bucket_sectors_fragmented(ca, *old), flags);
if (ret)
return ret;
}
s64 old_unstriped = bch2_bucket_sectors_unstriped(*old);
s64 new_unstriped = bch2_bucket_sectors_unstriped(*new);
if (old_unstriped != new_unstriped) {
int ret = bch2_dev_data_type_accounting_mod(trans, ca, BCH_DATA_unstriped,
!!new_unstriped - !!old_unstriped,
new_unstriped - old_unstriped,
0,
flags);
if (ret)
return ret;
}
return 0;
}
int bch2_trigger_alloc(struct btree_trans *trans,
enum btree_id btree, unsigned level,
struct bkey_s_c old, struct bkey_s new,
@ -759,10 +829,9 @@ int bch2_trigger_alloc(struct btree_trans *trans,
struct bch_alloc_v4 old_a_convert;
const struct bch_alloc_v4 *old_a = bch2_alloc_to_v4(old, &old_a_convert);
struct bch_alloc_v4 *new_a = bkey_s_to_alloc_v4(new).v;
if (flags & BTREE_TRIGGER_transactional) {
struct bch_alloc_v4 *new_a = bkey_s_to_alloc_v4(new).v;
alloc_data_type_set(new_a, new_a->data_type);
if (bch2_bucket_sectors_total(*new_a) > bch2_bucket_sectors_total(*old_a)) {
@ -819,22 +888,21 @@ int bch2_trigger_alloc(struct btree_trans *trans,
goto err;
}
/*
* need to know if we're getting called from the invalidate path or
* not:
*/
if ((flags & BTREE_TRIGGER_bucket_invalidate) &&
old_a->cached_sectors) {
ret = bch2_update_cached_sectors_list(trans, new.k->p.inode,
-((s64) old_a->cached_sectors));
ret = bch2_mod_dev_cached_sectors(trans, ca->dev_idx,
-((s64) old_a->cached_sectors),
flags & BTREE_TRIGGER_gc);
if (ret)
goto err;
}
ret = bch2_alloc_key_to_dev_counters(trans, ca, old_a, new_a, flags);
if (ret)
goto err;
}
if ((flags & BTREE_TRIGGER_atomic) && (flags & BTREE_TRIGGER_insert)) {
struct bch_alloc_v4 *new_a = bkey_s_to_alloc_v4(new).v;
u64 journal_seq = trans->journal_res.seq;
u64 bucket_journal_seq = new_a->journal_seq;
@ -863,26 +931,22 @@ int bch2_trigger_alloc(struct btree_trans *trans,
c->journal.flushed_seq_ondisk,
new.k->p.inode, new.k->p.offset,
bucket_journal_seq);
if (ret) {
bch2_fs_fatal_error(c,
"setting bucket_needs_journal_commit: %s", bch2_err_str(ret));
if (bch2_fs_fatal_err_on(ret, c,
"setting bucket_needs_journal_commit: %s", bch2_err_str(ret)))
goto err;
}
}
percpu_down_read(&c->mark_lock);
if (new_a->gen != old_a->gen) {
rcu_read_lock();
u8 *gen = bucket_gen(ca, new.k->p.offset);
if (unlikely(!gen)) {
percpu_up_read(&c->mark_lock);
rcu_read_unlock();
goto invalid_bucket;
}
*gen = new_a->gen;
rcu_read_unlock();
}
bch2_dev_usage_update(c, ca, old_a, new_a, journal_seq, false);
percpu_up_read(&c->mark_lock);
#define eval_state(_a, expr) ({ const struct bch_alloc_v4 *a = _a; expr; })
#define statechange(expr) !eval_state(old_a, expr) && eval_state(new_a, expr)
#define bucket_flushed(a) (!a->journal_seq || a->journal_seq <= c->journal.flushed_seq_ondisk)
@ -905,31 +969,16 @@ int bch2_trigger_alloc(struct btree_trans *trans,
bch2_gc_gens_async(c);
}
if ((flags & BTREE_TRIGGER_gc) &&
(flags & BTREE_TRIGGER_bucket_invalidate)) {
struct bch_alloc_v4 new_a_convert;
const struct bch_alloc_v4 *new_a = bch2_alloc_to_v4(new.s_c, &new_a_convert);
percpu_down_read(&c->mark_lock);
if ((flags & BTREE_TRIGGER_gc) && (flags & BTREE_TRIGGER_insert)) {
rcu_read_lock();
struct bucket *g = gc_bucket(ca, new.k->p.offset);
if (unlikely(!g)) {
percpu_up_read(&c->mark_lock);
rcu_read_unlock();
goto invalid_bucket;
}
g->gen_valid = 1;
bucket_lock(g);
g->gen_valid = 1;
g->gen = new_a->gen;
g->data_type = new_a->data_type;
g->stripe = new_a->stripe;
g->stripe_redundancy = new_a->stripe_redundancy;
g->dirty_sectors = new_a->dirty_sectors;
g->cached_sectors = new_a->cached_sectors;
bucket_unlock(g);
percpu_up_read(&c->mark_lock);
g->gen = new_a->gen;
rcu_read_unlock();
}
err:
printbuf_exit(&buf);
@ -1063,7 +1112,7 @@ int bch2_check_alloc_key(struct btree_trans *trans,
struct bch_dev *ca = bch2_dev_bucket_tryget_noerror(c, alloc_k.k->p);
if (fsck_err_on(!ca,
c, alloc_key_to_missing_dev_bucket,
trans, alloc_key_to_missing_dev_bucket,
"alloc key for invalid device:bucket %llu:%llu",
alloc_k.k->p.inode, alloc_k.k->p.offset))
ret = bch2_btree_delete_at(trans, alloc_iter, 0);
@ -1083,7 +1132,7 @@ int bch2_check_alloc_key(struct btree_trans *trans,
goto err;
if (fsck_err_on(k.k->type != discard_key_type,
c, need_discard_key_wrong,
trans, need_discard_key_wrong,
"incorrect key in need_discard btree (got %s should be %s)\n"
" %s",
bch2_bkey_types[k.k->type],
@ -1113,7 +1162,7 @@ int bch2_check_alloc_key(struct btree_trans *trans,
goto err;
if (fsck_err_on(k.k->type != freespace_key_type,
c, freespace_key_wrong,
trans, freespace_key_wrong,
"incorrect key in freespace btree (got %s should be %s)\n"
" %s",
bch2_bkey_types[k.k->type],
@ -1144,7 +1193,7 @@ int bch2_check_alloc_key(struct btree_trans *trans,
goto err;
if (fsck_err_on(a->gen != alloc_gen(k, gens_offset),
c, bucket_gens_key_wrong,
trans, bucket_gens_key_wrong,
"incorrect gen in bucket_gens btree (got %u should be %u)\n"
" %s",
alloc_gen(k, gens_offset), a->gen,
@ -1185,7 +1234,6 @@ int bch2_check_alloc_hole_freespace(struct btree_trans *trans,
struct bpos *end,
struct btree_iter *freespace_iter)
{
struct bch_fs *c = trans->c;
struct bkey_s_c k;
struct printbuf buf = PRINTBUF;
int ret;
@ -1203,7 +1251,7 @@ int bch2_check_alloc_hole_freespace(struct btree_trans *trans,
*end = bkey_min(k.k->p, *end);
if (fsck_err_on(k.k->type != KEY_TYPE_set,
c, freespace_hole_missing,
trans, freespace_hole_missing,
"hole in alloc btree missing in freespace btree\n"
" device %llu buckets %llu-%llu",
freespace_iter->pos.inode,
@ -1239,7 +1287,6 @@ int bch2_check_alloc_hole_bucket_gens(struct btree_trans *trans,
struct bpos *end,
struct btree_iter *bucket_gens_iter)
{
struct bch_fs *c = trans->c;
struct bkey_s_c k;
struct printbuf buf = PRINTBUF;
unsigned i, gens_offset, gens_end_offset;
@ -1263,7 +1310,7 @@ int bch2_check_alloc_hole_bucket_gens(struct btree_trans *trans,
bkey_reassemble(&g.k_i, k);
for (i = gens_offset; i < gens_end_offset; i++) {
if (fsck_err_on(g.v.gens[i], c,
if (fsck_err_on(g.v.gens[i], trans,
bucket_gens_hole_wrong,
"hole in alloc btree at %llu:%llu with nonzero gen in bucket_gens btree (%u)",
bucket_gens_pos_to_alloc(k.k->p, i).inode,
@ -1321,8 +1368,8 @@ static noinline_for_stack int bch2_check_discard_freespace_key(struct btree_tran
if (ret)
return ret;
if (fsck_err_on(!bch2_dev_bucket_exists(c, pos), c,
need_discard_freespace_key_to_invalid_dev_bucket,
if (fsck_err_on(!bch2_dev_bucket_exists(c, pos),
trans, need_discard_freespace_key_to_invalid_dev_bucket,
"entry in %s btree for nonexistant dev:bucket %llu:%llu",
bch2_btree_id_str(iter->btree_id), pos.inode, pos.offset))
goto delete;
@ -1331,8 +1378,8 @@ static noinline_for_stack int bch2_check_discard_freespace_key(struct btree_tran
if (fsck_err_on(a->data_type != state ||
(state == BCH_DATA_free &&
genbits != alloc_freespace_genbits(*a)), c,
need_discard_freespace_key_bad,
genbits != alloc_freespace_genbits(*a)),
trans, need_discard_freespace_key_bad,
"%s\n incorrectly set at %s:%llu:%llu:0 (free %u, genbits %llu should be %llu)",
(bch2_bkey_val_to_text(&buf, c, alloc_k), buf.buf),
bch2_btree_id_str(iter->btree_id),
@ -1379,7 +1426,7 @@ int bch2_check_bucket_gens_key(struct btree_trans *trans,
struct bch_dev *ca = bch2_dev_tryget_noerror(c, k.k->p.inode);
if (!ca) {
if (fsck_err(c, bucket_gens_to_invalid_dev,
if (fsck_err(trans, bucket_gens_to_invalid_dev,
"bucket_gens key for invalid device:\n %s",
(bch2_bkey_val_to_text(&buf, c, k), buf.buf)))
ret = bch2_btree_delete_at(trans, iter, 0);
@ -1387,8 +1434,8 @@ int bch2_check_bucket_gens_key(struct btree_trans *trans,
}
if (fsck_err_on(end <= ca->mi.first_bucket ||
start >= ca->mi.nbuckets, c,
bucket_gens_to_invalid_buckets,
start >= ca->mi.nbuckets,
trans, bucket_gens_to_invalid_buckets,
"bucket_gens key for invalid buckets:\n %s",
(bch2_bkey_val_to_text(&buf, c, k), buf.buf))) {
ret = bch2_btree_delete_at(trans, iter, 0);
@ -1396,16 +1443,16 @@ int bch2_check_bucket_gens_key(struct btree_trans *trans,
}
for (b = start; b < ca->mi.first_bucket; b++)
if (fsck_err_on(g.v.gens[b & KEY_TYPE_BUCKET_GENS_MASK], c,
bucket_gens_nonzero_for_invalid_buckets,
if (fsck_err_on(g.v.gens[b & KEY_TYPE_BUCKET_GENS_MASK],
trans, bucket_gens_nonzero_for_invalid_buckets,
"bucket_gens key has nonzero gen for invalid bucket")) {
g.v.gens[b & KEY_TYPE_BUCKET_GENS_MASK] = 0;
need_update = true;
}
for (b = ca->mi.nbuckets; b < end; b++)
if (fsck_err_on(g.v.gens[b & KEY_TYPE_BUCKET_GENS_MASK], c,
bucket_gens_nonzero_for_invalid_buckets,
if (fsck_err_on(g.v.gens[b & KEY_TYPE_BUCKET_GENS_MASK],
trans, bucket_gens_nonzero_for_invalid_buckets,
"bucket_gens key has nonzero gen for invalid bucket")) {
g.v.gens[b & KEY_TYPE_BUCKET_GENS_MASK] = 0;
need_update = true;
@ -1585,8 +1632,8 @@ static int bch2_check_alloc_to_lru_ref(struct btree_trans *trans,
if (a->data_type != BCH_DATA_cached)
return 0;
if (fsck_err_on(!a->io_time[READ], c,
alloc_key_cached_but_read_time_zero,
if (fsck_err_on(!a->io_time[READ],
trans, alloc_key_cached_but_read_time_zero,
"cached bucket with read_time 0\n"
" %s",
(printbuf_reset(&buf),
@ -1960,7 +2007,7 @@ static int invalidate_one_bucket(struct btree_trans *trans,
if (bch2_bucket_is_open_safe(c, bucket.inode, bucket.offset))
return 0;
a = bch2_trans_start_alloc_update(trans, bucket);
a = bch2_trans_start_alloc_update(trans, bucket, BTREE_TRIGGER_bucket_invalidate);
ret = PTR_ERR_OR_ZERO(a);
if (ret)
goto out;
@ -1981,6 +2028,7 @@ static int invalidate_one_bucket(struct btree_trans *trans,
a->v.gen++;
a->v.data_type = 0;
a->v.dirty_sectors = 0;
a->v.stripe_sectors = 0;
a->v.cached_sectors = 0;
a->v.io_time[READ] = bch2_current_io_time(c, READ);
a->v.io_time[WRITE] = bch2_current_io_time(c, WRITE);
@ -2336,6 +2384,7 @@ void bch2_recalc_capacity(struct bch_fs *c)
reserved_sectors = min(reserved_sectors, capacity);
c->reserved = reserved_sectors;
c->capacity = capacity - reserved_sectors;
c->bucket_size_max = bucket_size_max;

41
fs/bcachefs/alloc_background.h
View File

@ -41,6 +41,7 @@ static inline void alloc_to_bucket(struct bucket *dst, struct bch_alloc_v4 src)
{
dst->gen = src.gen;
dst->data_type = src.data_type;
dst->stripe_sectors = src.stripe_sectors;
dst->dirty_sectors = src.dirty_sectors;
dst->cached_sectors = src.cached_sectors;
dst->stripe = src.stripe;
@ -50,6 +51,7 @@ static inline void __bucket_m_to_alloc(struct bch_alloc_v4 *dst, struct bucket s
{
dst->gen = src.gen;
dst->data_type = src.data_type;
dst->stripe_sectors = src.stripe_sectors;
dst->dirty_sectors = src.dirty_sectors;
dst->cached_sectors = src.cached_sectors;
dst->stripe = src.stripe;
@ -80,30 +82,49 @@ static inline bool bucket_data_type_mismatch(enum bch_data_type bucket,
bucket_data_type(bucket) != bucket_data_type(ptr);
}
static inline unsigned bch2_bucket_sectors_total(struct bch_alloc_v4 a)
static inline s64 bch2_bucket_sectors_total(struct bch_alloc_v4 a)
{
return a.dirty_sectors + a.cached_sectors;
return a.stripe_sectors + a.dirty_sectors + a.cached_sectors;
}
static inline unsigned bch2_bucket_sectors_dirty(struct bch_alloc_v4 a)
static inline s64 bch2_bucket_sectors_dirty(struct bch_alloc_v4 a)
{
return a.dirty_sectors;
return a.stripe_sectors + a.dirty_sectors;
}
static inline unsigned bch2_bucket_sectors_fragmented(struct bch_dev *ca,
static inline s64 bch2_bucket_sectors(struct bch_alloc_v4 a)
{
return a.data_type == BCH_DATA_cached
? a.cached_sectors
: bch2_bucket_sectors_dirty(a);
}
static inline s64 bch2_bucket_sectors_fragmented(struct bch_dev *ca,
struct bch_alloc_v4 a)
{
int d = bch2_bucket_sectors_dirty(a);
int d = bch2_bucket_sectors(a);
return d ? max(0, ca->mi.bucket_size - d) : 0;
}
static inline s64 bch2_gc_bucket_sectors_fragmented(struct bch_dev *ca, struct bucket a)
{
int d = a.stripe_sectors + a.dirty_sectors;
return d ? max(0, ca->mi.bucket_size - d) : 0;
}
static inline s64 bch2_bucket_sectors_unstriped(struct bch_alloc_v4 a)
{
return a.data_type == BCH_DATA_stripe ? a.dirty_sectors : 0;
}
static inline enum bch_data_type alloc_data_type(struct bch_alloc_v4 a,
enum bch_data_type data_type)
{
if (a.stripe)
return data_type == BCH_DATA_parity ? data_type : BCH_DATA_stripe;
if (a.dirty_sectors)
if (bch2_bucket_sectors_dirty(a))
return data_type;
if (a.cached_sectors)
return BCH_DATA_cached;
@ -185,7 +206,8 @@ static inline void set_alloc_v4_u64s(struct bkey_i_alloc_v4 *a)
struct bkey_i_alloc_v4 *
bch2_trans_start_alloc_update_noupdate(struct btree_trans *, struct btree_iter *, struct bpos);
struct bkey_i_alloc_v4 *
bch2_trans_start_alloc_update(struct btree_trans *, struct bpos);
bch2_trans_start_alloc_update(struct btree_trans *, struct bpos,
enum btree_iter_update_trigger_flags);
void __bch2_alloc_to_v4(struct bkey_s_c, struct bch_alloc_v4 *);
@ -270,6 +292,9 @@ static inline bool bkey_is_alloc(const struct bkey *k)
int bch2_alloc_read(struct bch_fs *);
int bch2_alloc_key_to_dev_counters(struct btree_trans *, struct bch_dev *,
const struct bch_alloc_v4 *,
const struct bch_alloc_v4 *, unsigned);
int bch2_trigger_alloc(struct btree_trans *, enum btree_id, unsigned,
struct bkey_s_c, struct bkey_s,
enum btree_iter_update_trigger_flags);

2
fs/bcachefs/alloc_background_format.h
View File

@ -70,6 +70,8 @@ struct bch_alloc_v4 {
__u32 stripe;
__u32 nr_external_backpointers;
__u64 fragmentation_lru;
__u32 stripe_sectors;
__u32 pad;
} __packed __aligned(8);
#define BCH_ALLOC_V4_U64s_V0 6

20
fs/bcachefs/alloc_foreground.c
View File

@ -1589,7 +1589,7 @@ void bch2_fs_allocator_foreground_init(struct bch_fs *c)
}
}
static void bch2_open_bucket_to_text(struct printbuf *out, struct bch_fs *c, struct open_bucket *ob)
void bch2_open_bucket_to_text(struct printbuf *out, struct bch_fs *c, struct open_bucket *ob)
{
struct bch_dev *ca = ob_dev(c, ob);
unsigned data_type = ob->data_type;
@ -1706,15 +1706,15 @@ void bch2_fs_alloc_debug_to_text(struct printbuf *out, struct bch_fs *c)
printbuf_tabstops_reset(out);
printbuf_tabstop_push(out, 24);
percpu_down_read(&c->mark_lock);
prt_printf(out, "hidden\t%llu\n", bch2_fs_usage_read_one(c, &c->usage_base->b.hidden));
prt_printf(out, "btree\t%llu\n", bch2_fs_usage_read_one(c, &c->usage_base->b.btree));
prt_printf(out, "data\t%llu\n", bch2_fs_usage_read_one(c, &c->usage_base->b.data));
prt_printf(out, "cached\t%llu\n", bch2_fs_usage_read_one(c, &c->usage_base->b.cached));
prt_printf(out, "reserved\t%llu\n", bch2_fs_usage_read_one(c, &c->usage_base->b.reserved));
prt_printf(out, "online_reserved\t%llu\n", percpu_u64_get(c->online_reserved));
prt_printf(out, "nr_inodes\t%llu\n", bch2_fs_usage_read_one(c, &c->usage_base->b.nr_inodes));
percpu_up_read(&c->mark_lock);
prt_printf(out, "capacity\t%llu\n", c->capacity);
prt_printf(out, "reserved\t%llu\n", c->reserved);
prt_printf(out, "hidden\t%llu\n", percpu_u64_get(&c->usage->hidden));
prt_printf(out, "btree\t%llu\n", percpu_u64_get(&c->usage->btree));
prt_printf(out, "data\t%llu\n", percpu_u64_get(&c->usage->data));
prt_printf(out, "cached\t%llu\n", percpu_u64_get(&c->usage->cached));
prt_printf(out, "reserved\t%llu\n", percpu_u64_get(&c->usage->reserved));
prt_printf(out, "online_reserved\t%llu\n", percpu_u64_get(c->online_reserved));
prt_printf(out, "nr_inodes\t%llu\n", percpu_u64_get(&c->usage->nr_inodes));
prt_newline(out);
prt_printf(out, "freelist_wait\t%s\n", c->freelist_wait.list.first ? "waiting" : "empty");

1
fs/bcachefs/alloc_foreground.h
View File

@ -222,6 +222,7 @@ static inline struct write_point_specifier writepoint_ptr(struct write_point *wp
void bch2_fs_allocator_foreground_init(struct bch_fs *);
void bch2_open_bucket_to_text(struct printbuf *, struct bch_fs *, struct open_bucket *);
void bch2_open_buckets_to_text(struct printbuf *, struct bch_fs *);
void bch2_open_buckets_partial_to_text(struct printbuf *, struct bch_fs *);

22
fs/bcachefs/backpointers.c
View File

@ -395,7 +395,7 @@ static int bch2_check_btree_backpointer(struct btree_trans *trans, struct btree_
struct bpos bucket;
if (!bp_pos_to_bucket_nodev_noerror(c, k.k->p, &bucket)) {
if (fsck_err(c, backpointer_to_missing_device,
if (fsck_err(trans, backpointer_to_missing_device,
"backpointer for missing device:\n%s",
(bch2_bkey_val_to_text(&buf, c, k), buf.buf)))
ret = bch2_btree_delete_at(trans, bp_iter, 0);
@ -407,8 +407,8 @@ static int bch2_check_btree_backpointer(struct btree_trans *trans, struct btree_
if (ret)
goto out;
if (fsck_err_on(alloc_k.k->type != KEY_TYPE_alloc_v4, c,
backpointer_to_missing_alloc,
if (fsck_err_on(alloc_k.k->type != KEY_TYPE_alloc_v4,
trans, backpointer_to_missing_alloc,
"backpointer for nonexistent alloc key: %llu:%llu:0\n%s",
alloc_iter.pos.inode, alloc_iter.pos.offset,
(bch2_bkey_val_to_text(&buf, c, k), buf.buf))) {
@ -505,7 +505,7 @@ found:
struct nonce nonce = extent_nonce(extent.k->version, p.crc);
struct bch_csum csum = bch2_checksum(c, p.crc.csum_type, nonce, data_buf, bytes);
if (fsck_err_on(bch2_crc_cmp(csum, p.crc.csum),
c, dup_backpointer_to_bad_csum_extent,
trans, dup_backpointer_to_bad_csum_extent,
"%s", buf.buf))
ret = drop_dev_and_update(trans, btree, extent, dev) ?: 1;
fsck_err:
@ -647,7 +647,7 @@ missing:
prt_printf(&buf, "\n want: ");
bch2_bkey_val_to_text(&buf, c, bkey_i_to_s_c(&n_bp_k.k_i));
if (fsck_err(c, ptr_to_missing_backpointer, "%s", buf.buf))
if (fsck_err(trans, ptr_to_missing_backpointer, "%s", buf.buf))
ret = bch2_bucket_backpointer_mod(trans, ca, bucket, bp, orig_k, true);
goto out;
@ -762,12 +762,12 @@ static int bch2_get_btree_in_memory_pos(struct btree_trans *trans,
for (enum btree_id btree = start.btree;
btree < BTREE_ID_NR && !ret;
btree++) {
unsigned depth = ((1U << btree) & btree_leaf_mask) ? 0 : 1;
unsigned depth = (BIT_ULL(btree) & btree_leaf_mask) ? 0 : 1;
struct btree_iter iter;
struct btree *b;
if (!((1U << btree) & btree_leaf_mask) &&
!((1U << btree) & btree_interior_mask))
if (!(BIT_ULL(btree) & btree_leaf_mask) &&
!(BIT_ULL(btree) & btree_interior_mask))
continue;
bch2_trans_begin(trans);
@ -908,7 +908,7 @@ static int check_one_backpointer(struct btree_trans *trans,
if (ret)
goto out;
if (fsck_err(c, backpointer_to_missing_ptr,
if (fsck_err(trans, backpointer_to_missing_ptr,
"backpointer for missing %s\n %s",
bp.v->level ? "btree node" : "extent",
(bch2_bkey_val_to_text(&buf, c, bp.s_c), buf.buf))) {
@ -951,8 +951,8 @@ int bch2_check_backpointers_to_extents(struct bch_fs *c)
while (1) {
ret = bch2_get_btree_in_memory_pos(trans,
(1U << BTREE_ID_extents)|
(1U << BTREE_ID_reflink),
BIT_ULL(BTREE_ID_extents)|
BIT_ULL(BTREE_ID_reflink),
~0,
start, &end);
if (ret)

29
fs/bcachefs/bcachefs.h
View File

@ -205,6 +205,7 @@
#include <linux/zstd.h>
#include "bcachefs_format.h"
#include "disk_accounting_types.h"
#include "errcode.h"
#include "fifo.h"
#include "nocow_locking_types.h"
@ -266,6 +267,8 @@ do { \
#define bch2_fmt(_c, fmt) bch2_log_msg(_c, fmt "\n")
void bch2_print_str(struct bch_fs *, const char *);
__printf(2, 3)
void bch2_print_opts(struct bch_opts *, const char *, ...);
@ -535,8 +538,8 @@ struct bch_dev {
/*
* Buckets:
* Per-bucket arrays are protected by c->mark_lock, bucket_lock and
* gc_lock, for device resize - holding any is sufficient for access:
* Or rcu_read_lock(), but only for dev_ptr_stale():
* gc_gens_lock, for device resize - holding any is sufficient for
* access: Or rcu_read_lock(), but only for dev_ptr_stale():
*/
struct bucket_array __rcu *buckets_gc;
struct bucket_gens __rcu *bucket_gens;
@ -544,9 +547,7 @@ struct bch_dev {
unsigned long *buckets_nouse;
struct rw_semaphore bucket_lock;
struct bch_dev_usage *usage_base;
struct bch_dev_usage __percpu *usage[JOURNAL_BUF_NR];
struct bch_dev_usage __percpu *usage_gc;
struct bch_dev_usage __percpu *usage;
/* Allocator: */
u64 new_fs_bucket_idx;
@ -592,6 +593,8 @@ struct bch_dev {
#define BCH_FS_FLAGS() \
x(new_fs) \
x(started) \
x(btree_running) \
x(accounting_replay_done) \
x(may_go_rw) \
x(rw) \
x(was_rw) \
@ -670,8 +673,6 @@ struct btree_trans_buf {
struct btree_trans *trans;
};
#define REPLICAS_DELTA_LIST_MAX (1U << 16)
#define BCACHEFS_ROOT_SUBVOL_INUM \
((subvol_inum) { BCACHEFS_ROOT_SUBVOL, BCACHEFS_ROOT_INO })
@ -741,15 +742,14 @@ struct bch_fs {
struct bch_dev __rcu *devs[BCH_SB_MEMBERS_MAX];
struct bch_accounting_mem accounting;
struct bch_replicas_cpu replicas;
struct bch_replicas_cpu replicas_gc;
struct mutex replicas_gc_lock;
mempool_t replicas_delta_pool;
struct journal_entry_res btree_root_journal_res;
struct journal_entry_res replicas_journal_res;
struct journal_entry_res clock_journal_res;
struct journal_entry_res dev_usage_journal_res;
struct bch_disk_groups_cpu __rcu *disk_groups;
@ -872,6 +872,7 @@ struct bch_fs {
struct bch_devs_mask rw_devs[BCH_DATA_NR];
u64 capacity; /* sectors */
u64 reserved; /* sectors */
/*
* When capacity _decreases_ (due to a disk being removed), we
@ -889,15 +890,9 @@ struct bch_fs {
struct percpu_rw_semaphore mark_lock;
seqcount_t usage_lock;
struct bch_fs_usage *usage_base;
struct bch_fs_usage __percpu *usage[JOURNAL_BUF_NR];
struct bch_fs_usage __percpu *usage_gc;
struct bch_fs_usage_base __percpu *usage;
u64 __percpu *online_reserved;
/* single element mempool: */
struct mutex usage_scratch_lock;
struct bch_fs_usage_online *usage_scratch;
struct io_clock io_clock[2];
/* JOURNAL SEQ BLACKLIST */

70
fs/bcachefs/bcachefs_format.h
View File

@ -417,7 +417,8 @@ static inline void bkey_init(struct bkey *k)
x(bucket_gens, 30) \
x(snapshot_tree, 31) \
x(logged_op_truncate, 32) \
x(logged_op_finsert, 33)
x(logged_op_finsert, 33) \
x(accounting, 34)
enum bch_bkey_type {
#define x(name, nr) KEY_TYPE_##name = nr,
@ -467,18 +468,6 @@ struct bch_backpointer {
struct bpos pos;
} __packed __aligned(8);
/* LRU btree: */
struct bch_lru {
struct bch_val v;
__le64 idx;
} __packed __aligned(8);
#define LRU_ID_STRIPES (1U << 16)
#define LRU_TIME_BITS 48
#define LRU_TIME_MAX ((1ULL << LRU_TIME_BITS) - 1)
/* Optional/variable size superblock sections: */
struct bch_sb_field {
@ -505,6 +494,9 @@ struct bch_sb_field {
x(downgrade, 14)
#include "alloc_background_format.h"
#include "dirent_format.h"
#include "disk_accounting_format.h"
#include "disk_groups_format.h"
#include "extents_format.h"
#include "ec_format.h"
#include "dirent_format.h"
@ -512,6 +504,7 @@ struct bch_sb_field {
#include "inode_format.h"
#include "journal_seq_blacklist_format.h"
#include "logged_ops_format.h"
#include "lru_format.h"
#include "quota_format.h"
#include "reflink_format.h"
#include "replicas_format.h"
@ -602,48 +595,6 @@ LE64_BITMASK(BCH_KDF_SCRYPT_N, struct bch_sb_field_crypt, kdf_flags, 0, 16);
LE64_BITMASK(BCH_KDF_SCRYPT_R, struct bch_sb_field_crypt, kdf_flags, 16, 32);
LE64_BITMASK(BCH_KDF_SCRYPT_P, struct bch_sb_field_crypt, kdf_flags, 32, 48);
#define BCH_DATA_TYPES() \
x(free, 0) \
x(sb, 1) \
x(journal, 2) \
x(btree, 3) \
x(user, 4) \
x(cached, 5) \
x(parity, 6) \
x(stripe, 7) \
x(need_gc_gens, 8) \
x(need_discard, 9)
enum bch_data_type {
#define x(t, n) BCH_DATA_##t,
BCH_DATA_TYPES()
#undef x
BCH_DATA_NR
};
static inline bool data_type_is_empty(enum bch_data_type type)
{
switch (type) {
case BCH_DATA_free:
case BCH_DATA_need_gc_gens:
case BCH_DATA_need_discard:
return true;
default:
return false;
}
}
static inline bool data_type_is_hidden(enum bch_data_type type)
{
switch (type) {
case BCH_DATA_sb:
case BCH_DATA_journal:
return true;
default:
return false;
}
}
/*
* On clean shutdown, store btree roots and current journal sequence number in
* the superblock:
@ -722,7 +673,9 @@ struct bch_sb_field_ext {
x(member_seq, BCH_VERSION(1, 4)) \
x(subvolume_fs_parent, BCH_VERSION(1, 5)) \
x(btree_subvolume_children, BCH_VERSION(1, 6)) \
x(mi_btree_bitmap, BCH_VERSION(1, 7))
x(mi_btree_bitmap, BCH_VERSION(1, 7)) \
x(bucket_stripe_sectors, BCH_VERSION(1, 8)) \
x(disk_accounting_v2, BCH_VERSION(1, 9))
enum bcachefs_metadata_version {
bcachefs_metadata_version_min = 9,
@ -1174,7 +1127,6 @@ static inline bool jset_entry_is_key(struct jset_entry *e)
switch (e->type) {
case BCH_JSET_ENTRY_btree_keys:
case BCH_JSET_ENTRY_btree_root:
case BCH_JSET_ENTRY_overwrite:
case BCH_JSET_ENTRY_write_buffer_keys:
return true;
}
@ -1375,7 +1327,9 @@ enum btree_id_flags {
x(rebalance_work, 18, BTREE_ID_SNAPSHOT_FIELD, \
BIT_ULL(KEY_TYPE_set)|BIT_ULL(KEY_TYPE_cookie)) \
x(subvolume_children, 19, 0, \
BIT_ULL(KEY_TYPE_set))
BIT_ULL(KEY_TYPE_set)) \
x(accounting, 20, BTREE_ID_SNAPSHOT_FIELD, \
BIT_ULL(KEY_TYPE_accounting)) \
enum btree_id {
#define x(name, nr, ...) BTREE_ID_##name = nr,

36
fs/bcachefs/bcachefs_ioctl.h
View File

@ -5,6 +5,7 @@
#include <linux/uuid.h>
#include <asm/ioctl.h>
#include "bcachefs_format.h"
#include "bkey_types.h"
/*
* Flags common to multiple ioctls:
@ -85,6 +86,7 @@ struct bch_ioctl_incremental {
#define BCH_IOCTL_FSCK_OFFLINE _IOW(0xbc, 19, struct bch_ioctl_fsck_offline)
#define BCH_IOCTL_FSCK_ONLINE _IOW(0xbc, 20, struct bch_ioctl_fsck_online)
#define BCH_IOCTL_QUERY_ACCOUNTING _IOW(0xbc, 21, struct bch_ioctl_query_accounting)
/* ioctl below act on a particular file, not the filesystem as a whole: */
@ -251,12 +253,18 @@ struct bch_replicas_usage {
struct bch_replicas_entry_v1 r;
} __packed;
static inline unsigned replicas_usage_bytes(struct bch_replicas_usage *u)
{
return offsetof(struct bch_replicas_usage, r) + replicas_entry_bytes(&u->r);
}
static inline struct bch_replicas_usage *
replicas_usage_next(struct bch_replicas_usage *u)
{
return (void *) u + replicas_entry_bytes(&u->r) + 8;
return (void *) u + replicas_usage_bytes(u);
}
/* Obsolete */
/*
* BCH_IOCTL_FS_USAGE: query filesystem disk space usage
*
@ -282,6 +290,7 @@ struct bch_ioctl_fs_usage {
struct bch_replicas_usage replicas[];
};
/* Obsolete */
/*
* BCH_IOCTL_DEV_USAGE: query device disk space usage
*
@ -306,6 +315,7 @@ struct bch_ioctl_dev_usage {
} d[10];
};
/* Obsolete */
struct bch_ioctl_dev_usage_v2 {
__u64 dev;
__u32 flags;
@ -409,4 +419,28 @@ struct bch_ioctl_fsck_online {
__u64 opts; /* string */
};
/*
* BCH_IOCTL_QUERY_ACCOUNTING: query filesystem disk accounting
*
* Returns disk space usage broken out by data type, number of replicas, and
* by component device
*
* @replica_entries_bytes - size, in bytes, allocated for replica usage entries
*
* On success, @replica_entries_bytes will be changed to indicate the number of
* bytes actually used.
*
* Returns -ERANGE if @replica_entries_bytes was too small
*/
struct bch_ioctl_query_accounting {
__u64 capacity;
__u64 used;
__u64 online_reserved;
__u32 accounting_u64s; /* input parameter */
__u32 accounting_types_mask; /* input parameter */
struct bkey_i_accounting accounting[];
};
#endif /* _BCACHEFS_IOCTL_H */

1
fs/bcachefs/bkey_methods.c
View File

@ -7,6 +7,7 @@
#include "btree_types.h"
#include "alloc_background.h"
#include "dirent.h"
#include "disk_accounting.h"
#include "ec.h"
#include "error.h"
#include "extents.h"

16
fs/bcachefs/btree_cache.c
View File

@ -602,8 +602,8 @@ int bch2_btree_cache_cannibalize_lock(struct btree_trans *trans, struct closure
struct btree_cache *bc = &c->btree_cache;
struct task_struct *old;
old = cmpxchg(&bc->alloc_lock, NULL, current);
if (old == NULL || old == current)
old = NULL;
if (try_cmpxchg(&bc->alloc_lock, &old, current) || old == current)
goto success;
if (!cl) {
@ -614,8 +614,8 @@ int bch2_btree_cache_cannibalize_lock(struct btree_trans *trans, struct closure
closure_wait(&bc->alloc_wait, cl);
/* Try again, after adding ourselves to waitlist */
old = cmpxchg(&bc->alloc_lock, NULL, current);
if (old == NULL || old == current) {
old = NULL;
if (try_cmpxchg(&bc->alloc_lock, &old, current) || old == current) {
/* We raced */
closure_wake_up(&bc->alloc_wait);
goto success;
@ -1257,6 +1257,14 @@ const char *bch2_btree_id_str(enum btree_id btree)
return btree < BTREE_ID_NR ? __bch2_btree_ids[btree] : "(unknown)";
}
void bch2_btree_id_to_text(struct printbuf *out, enum btree_id btree)
{
if (btree < BTREE_ID_NR)
prt_str(out, __bch2_btree_ids[btree]);
else
prt_printf(out, "(unknown btree %u)", btree);
}
void bch2_btree_pos_to_text(struct printbuf *out, struct bch_fs *c, const struct btree *b)
{
prt_printf(out, "%s level %u/%u\n ",

2
fs/bcachefs/btree_cache.h
View File

@ -132,6 +132,8 @@ static inline struct btree *btree_node_root(struct bch_fs *c, struct btree *b)
}
const char *bch2_btree_id_str(enum btree_id);
void bch2_btree_id_to_text(struct printbuf *, enum btree_id);
void bch2_btree_pos_to_text(struct printbuf *, struct bch_fs *, const struct btree *);
void bch2_btree_node_to_text(struct printbuf *, struct bch_fs *, const struct btree *);
void bch2_btree_cache_to_text(struct printbuf *, const struct btree_cache *);

287
fs/bcachefs/btree_gc.c
View File

@ -20,6 +20,7 @@
#include "buckets.h"
#include "clock.h"
#include "debug.h"
#include "disk_accounting.h"
#include "ec.h"
#include "error.h"
#include "extents.h"
@ -44,6 +45,22 @@
#define DROP_PREV_NODE 11
#define DID_FILL_FROM_SCAN 12
static const char * const bch2_gc_phase_strs[] = {
#define x(n) #n,
GC_PHASES()
#undef x
NULL
};
void bch2_gc_pos_to_text(struct printbuf *out, struct gc_pos *p)
{
prt_str(out, bch2_gc_phase_strs[p->phase]);
prt_char(out, ' ');
bch2_btree_id_to_text(out, p->btree);
prt_printf(out, " l=%u ", p->level);
bch2_bpos_to_text(out, p->pos);
}
static struct bkey_s unsafe_bkey_s_c_to_s(struct bkey_s_c k)
{
return (struct bkey_s) {{{
@ -174,10 +191,11 @@ static int set_node_max(struct bch_fs *c, struct btree *b, struct bpos new_max)
return 0;
}
static int btree_check_node_boundaries(struct bch_fs *c, struct btree *b,
static int btree_check_node_boundaries(struct btree_trans *trans, struct btree *b,
struct btree *prev, struct btree *cur,
struct bpos *pulled_from_scan)
{
struct bch_fs *c = trans->c;
struct bpos expected_start = !prev
? b->data->min_key
: bpos_successor(prev->key.k.p);
@ -215,29 +233,29 @@ static int btree_check_node_boundaries(struct bch_fs *c, struct btree *b,
*pulled_from_scan = cur->data->min_key;
ret = DID_FILL_FROM_SCAN;
} else {
if (mustfix_fsck_err(c, btree_node_topology_bad_min_key,
if (mustfix_fsck_err(trans, btree_node_topology_bad_min_key,
"btree node with incorrect min_key%s", buf.buf))
ret = set_node_min(c, cur, expected_start);
}
} else { /* overlap */
if (prev && BTREE_NODE_SEQ(cur->data) > BTREE_NODE_SEQ(prev->data)) { /* cur overwrites prev */
if (bpos_ge(prev->data->min_key, cur->data->min_key)) { /* fully? */
if (mustfix_fsck_err(c, btree_node_topology_overwritten_by_next_node,
if (mustfix_fsck_err(trans, btree_node_topology_overwritten_by_next_node,
"btree node overwritten by next node%s", buf.buf))
ret = DROP_PREV_NODE;
} else {
if (mustfix_fsck_err(c, btree_node_topology_bad_max_key,
if (mustfix_fsck_err(trans, btree_node_topology_bad_max_key,
"btree node with incorrect max_key%s", buf.buf))
ret = set_node_max(c, prev,
bpos_predecessor(cur->data->min_key));
}
} else {
if (bpos_ge(expected_start, cur->data->max_key)) { /* fully? */
if (mustfix_fsck_err(c, btree_node_topology_overwritten_by_prev_node,
if (mustfix_fsck_err(trans, btree_node_topology_overwritten_by_prev_node,
"btree node overwritten by prev node%s", buf.buf))
ret = DROP_THIS_NODE;
} else {
if (mustfix_fsck_err(c, btree_node_topology_bad_min_key,
if (mustfix_fsck_err(trans, btree_node_topology_bad_min_key,
"btree node with incorrect min_key%s", buf.buf))
ret = set_node_min(c, cur, expected_start);
}
@ -249,9 +267,10 @@ fsck_err:
return ret;
}
static int btree_repair_node_end(struct bch_fs *c, struct btree *b,
static int btree_repair_node_end(struct btree_trans *trans, struct btree *b,
struct btree *child, struct bpos *pulled_from_scan)
{
struct bch_fs *c = trans->c;
struct printbuf buf = PRINTBUF;
int ret = 0;
@ -265,7 +284,7 @@ static int btree_repair_node_end(struct bch_fs *c, struct btree *b,
prt_str(&buf, "\n child: ");
bch2_bkey_val_to_text(&buf, c, bkey_i_to_s_c(&child->key));
if (mustfix_fsck_err(c, btree_node_topology_bad_max_key,
if (mustfix_fsck_err(trans, btree_node_topology_bad_max_key,
"btree node with incorrect max_key%s", buf.buf)) {
if (b->c.level == 1 &&
bpos_lt(*pulled_from_scan, b->key.k.p)) {
@ -324,8 +343,8 @@ again:
printbuf_reset(&buf);
bch2_bkey_val_to_text(&buf, c, bkey_i_to_s_c(cur_k.k));
if (mustfix_fsck_err_on(bch2_err_matches(ret, EIO), c,
btree_node_unreadable,
if (mustfix_fsck_err_on(bch2_err_matches(ret, EIO),
trans, btree_node_unreadable,
"Topology repair: unreadable btree node at btree %s level %u:\n"
" %s",
bch2_btree_id_str(b->c.btree_id),
@ -362,7 +381,7 @@ again:
continue;
}
ret = btree_check_node_boundaries(c, b, prev, cur, pulled_from_scan);
ret = btree_check_node_boundaries(trans, b, prev, cur, pulled_from_scan);
if (ret == DID_FILL_FROM_SCAN) {
new_pass = true;
ret = 0;
@ -403,7 +422,7 @@ again:
if (!ret && !IS_ERR_OR_NULL(prev)) {
BUG_ON(cur);
ret = btree_repair_node_end(c, b, prev, pulled_from_scan);
ret = btree_repair_node_end(trans, b, prev, pulled_from_scan);
if (ret == DID_FILL_FROM_SCAN) {
new_pass = true;
ret = 0;
@ -461,8 +480,8 @@ again:
printbuf_reset(&buf);
bch2_bkey_val_to_text(&buf, c, bkey_i_to_s_c(&b->key));
if (mustfix_fsck_err_on(!have_child, c,
btree_node_topology_interior_node_empty,
if (mustfix_fsck_err_on(!have_child,
trans, btree_node_topology_interior_node_empty,
"empty interior btree node at btree %s level %u\n"
" %s",
bch2_btree_id_str(b->c.btree_id),
@ -509,7 +528,7 @@ reconstruct_root:
r->error = 0;
if (!bch2_btree_has_scanned_nodes(c, i)) {
mustfix_fsck_err(c, btree_root_unreadable_and_scan_found_nothing,
mustfix_fsck_err(trans, btree_root_unreadable_and_scan_found_nothing,
"no nodes found for btree %s, continue?", bch2_btree_id_str(i));
bch2_btree_root_alloc_fake_trans(trans, i, 0);
} else {
@ -583,8 +602,9 @@ static int bch2_gc_mark_key(struct btree_trans *trans, enum btree_id btree_id,
BUG_ON(bch2_journal_seq_verify &&
k.k->version.lo > atomic64_read(&c->journal.seq));
if (fsck_err_on(k.k->version.lo > atomic64_read(&c->key_version), c,
bkey_version_in_future,
if (fsck_err_on(btree_id != BTREE_ID_accounting &&
k.k->version.lo > atomic64_read(&c->key_version),
trans, bkey_version_in_future,
"key version number higher than recorded %llu\n %s",
atomic64_read(&c->key_version),
(bch2_bkey_val_to_text(&buf, c, k), buf.buf)))
@ -592,7 +612,7 @@ static int bch2_gc_mark_key(struct btree_trans *trans, enum btree_id btree_id,
}
if (mustfix_fsck_err_on(level && !bch2_dev_btree_bitmap_marked(c, k),
c, btree_bitmap_not_marked,
trans, btree_bitmap_not_marked,
"btree ptr not marked in member info btree allocated bitmap\n %s",
(printbuf_reset(&buf),
bch2_bkey_val_to_text(&buf, c, k),
@ -622,7 +642,7 @@ static int bch2_gc_mark_key(struct btree_trans *trans, enum btree_id btree_id,
}
ret = bch2_key_trigger(trans, btree_id, level, old, unsafe_bkey_s_c_to_s(k),
BTREE_TRIGGER_gc|flags);
BTREE_TRIGGER_gc|BTREE_TRIGGER_insert|flags);
out:
fsck_err:
printbuf_exit(&buf);
@ -633,13 +653,27 @@ fsck_err:
static int bch2_gc_btree(struct btree_trans *trans, enum btree_id btree, bool initial)
{
struct bch_fs *c = trans->c;
int level = 0, target_depth = btree_node_type_needs_gc(__btree_node_type(0, btree)) ? 0 : 1;
unsigned target_depth = btree_node_type_has_triggers(__btree_node_type(0, btree)) ? 0 : 1;
int ret = 0;
/* We need to make sure every leaf node is readable before going RW */
if (initial)
target_depth = 0;
for (unsigned level = target_depth; level < BTREE_MAX_DEPTH; level++) {
struct btree *prev = NULL;
struct btree_iter iter;
bch2_trans_node_iter_init(trans, &iter, btree, POS_MIN, 0, level,
BTREE_ITER_prefetch);
ret = for_each_btree_key_continue(trans, iter, 0, k, ({
gc_pos_set(c, gc_pos_btree(btree, level, k.k->p));
bch2_gc_mark_key(trans, btree, level, &prev, &iter, k, initial);
}));
if (ret)
goto err;
}
/* root */
do {
retry_root:
@ -661,28 +695,11 @@ retry_root:
gc_pos_set(c, gc_pos_btree(btree, b->c.level + 1, SPOS_MAX));
struct bkey_s_c k = bkey_i_to_s_c(&b->key);
ret = bch2_gc_mark_key(trans, btree, b->c.level + 1, NULL, NULL, k, initial);
level = b->c.level;
err_root:
bch2_trans_iter_exit(trans, &iter);
} while (bch2_err_matches(ret, BCH_ERR_transaction_restart));
if (ret)
return ret;
for (; level >= target_depth; --level) {
struct btree *prev = NULL;
struct btree_iter iter;
bch2_trans_node_iter_init(trans, &iter, btree, POS_MIN, 0, level,
BTREE_ITER_prefetch);
ret = for_each_btree_key_continue(trans, iter, 0, k, ({
gc_pos_set(c, gc_pos_btree(btree, level, k.k->p));
bch2_gc_mark_key(trans, btree, level, &prev, &iter, k, initial);
}));
if (ret)
break;
}
err:
bch_err_fn(c, ret);
return ret;
}
@ -711,7 +728,7 @@ static int bch2_gc_btrees(struct bch_fs *c)
ret = bch2_gc_btree(trans, btree, true);
if (mustfix_fsck_err_on(bch2_err_matches(ret, EIO),
c, btree_node_read_error,
trans, btree_node_read_error,
"btree node read error for %s",
bch2_btree_id_str(btree)))
ret = bch2_run_explicit_recovery_pass(c, BCH_RECOVERY_PASS_check_topology);
@ -734,131 +751,25 @@ static int bch2_mark_superblocks(struct bch_fs *c)
static void bch2_gc_free(struct bch_fs *c)
{
bch2_accounting_gc_free(c);
genradix_free(&c->reflink_gc_table);
genradix_free(&c->gc_stripes);
for_each_member_device(c, ca) {
kvfree(rcu_dereference_protected(ca->buckets_gc, 1));
ca->buckets_gc = NULL;
free_percpu(ca->usage_gc);
ca->usage_gc = NULL;
}
free_percpu(c->usage_gc);
c->usage_gc = NULL;
}
static int bch2_gc_done(struct bch_fs *c)
{
struct bch_dev *ca = NULL;
struct printbuf buf = PRINTBUF;
unsigned i;
int ret = 0;
percpu_down_write(&c->mark_lock);
#define copy_field(_err, _f, _msg, ...) \
if (fsck_err_on(dst->_f != src->_f, c, _err, \
_msg ": got %llu, should be %llu" , ##__VA_ARGS__, \
dst->_f, src->_f)) \
dst->_f = src->_f
#define copy_dev_field(_err, _f, _msg, ...) \
copy_field(_err, _f, "dev %u has wrong " _msg, ca->dev_idx, ##__VA_ARGS__)
#define copy_fs_field(_err, _f, _msg, ...) \
copy_field(_err, _f, "fs has wrong " _msg, ##__VA_ARGS__)
for (i = 0; i < ARRAY_SIZE(c->usage); i++)
bch2_fs_usage_acc_to_base(c, i);
__for_each_member_device(c, ca) {
struct bch_dev_usage *dst = ca->usage_base;
struct bch_dev_usage *src = (void *)
bch2_acc_percpu_u64s((u64 __percpu *) ca->usage_gc,
dev_usage_u64s());
for (i = 0; i < BCH_DATA_NR; i++) {
copy_dev_field(dev_usage_buckets_wrong,
d[i].buckets, "%s buckets", bch2_data_type_str(i));
copy_dev_field(dev_usage_sectors_wrong,
d[i].sectors, "%s sectors", bch2_data_type_str(i));
copy_dev_field(dev_usage_fragmented_wrong,
d[i].fragmented, "%s fragmented", bch2_data_type_str(i));
}
}
{
unsigned nr = fs_usage_u64s(c);
struct bch_fs_usage *dst = c->usage_base;
struct bch_fs_usage *src = (void *)
bch2_acc_percpu_u64s((u64 __percpu *) c->usage_gc, nr);
copy_fs_field(fs_usage_hidden_wrong,
b.hidden, "hidden");
copy_fs_field(fs_usage_btree_wrong,
b.btree, "btree");
copy_fs_field(fs_usage_data_wrong,
b.data, "data");
copy_fs_field(fs_usage_cached_wrong,
b.cached, "cached");
copy_fs_field(fs_usage_reserved_wrong,
b.reserved, "reserved");
copy_fs_field(fs_usage_nr_inodes_wrong,
b.nr_inodes,"nr_inodes");
for (i = 0; i < BCH_REPLICAS_MAX; i++)
copy_fs_field(fs_usage_persistent_reserved_wrong,
persistent_reserved[i],
"persistent_reserved[%i]", i);
for (i = 0; i < c->replicas.nr; i++) {
struct bch_replicas_entry_v1 *e =
cpu_replicas_entry(&c->replicas, i);
printbuf_reset(&buf);
bch2_replicas_entry_to_text(&buf, e);
copy_fs_field(fs_usage_replicas_wrong,
replicas[i], "%s", buf.buf);
}
}
#undef copy_fs_field
#undef copy_dev_field
#undef copy_stripe_field
#undef copy_field
fsck_err:
bch2_dev_put(ca);
bch_err_fn(c, ret);
percpu_up_write(&c->mark_lock);
printbuf_exit(&buf);
return ret;
}
static int bch2_gc_start(struct bch_fs *c)
{
BUG_ON(c->usage_gc);
c->usage_gc = __alloc_percpu_gfp(fs_usage_u64s(c) * sizeof(u64),
sizeof(u64), GFP_KERNEL);
if (!c->usage_gc) {
bch_err(c, "error allocating c->usage_gc");
return -BCH_ERR_ENOMEM_gc_start;
}
for_each_member_device(c, ca) {
BUG_ON(ca->usage_gc);
ca->usage_gc = alloc_percpu(struct bch_dev_usage);
if (!ca->usage_gc) {
bch_err(c, "error allocating ca->usage_gc");
int ret = bch2_dev_usage_init(ca, true);
if (ret) {
bch2_dev_put(ca);
return -BCH_ERR_ENOMEM_gc_start;
return ret;
}
this_cpu_write(ca->usage_gc->d[BCH_DATA_free].buckets,
ca->mi.nbuckets - ca->mi.first_bucket);
}
return 0;
@ -872,6 +783,7 @@ static inline bool bch2_alloc_v4_cmp(struct bch_alloc_v4 l,
l.oldest_gen != r.oldest_gen ||
l.data_type != r.data_type ||
l.dirty_sectors != r.dirty_sectors ||
l.stripe_sectors != r.stripe_sectors ||
l.cached_sectors != r.cached_sectors ||
l.stripe_redundancy != r.stripe_redundancy ||
l.stripe != r.stripe;
@ -905,6 +817,7 @@ static int bch2_alloc_write_key(struct btree_trans *trans,
gc.data_type = old->data_type;
gc.dirty_sectors = old->dirty_sectors;
}
percpu_up_read(&c->mark_lock);
/*
* gc.data_type doesn't yet include need_discard & need_gc_gen states -
@ -913,14 +826,16 @@ static int bch2_alloc_write_key(struct btree_trans *trans,
alloc_data_type_set(&gc, gc.data_type);
if (gc.data_type != old_gc.data_type ||
gc.dirty_sectors != old_gc.dirty_sectors)
bch2_dev_usage_update(c, ca, &old_gc, &gc, 0, true);
percpu_up_read(&c->mark_lock);
gc.dirty_sectors != old_gc.dirty_sectors) {
ret = bch2_alloc_key_to_dev_counters(trans, ca, &old_gc, &gc, BTREE_TRIGGER_gc);
if (ret)
return ret;
}
gc.fragmentation_lru = alloc_lru_idx_fragmentation(gc, ca);
if (fsck_err_on(new.data_type != gc.data_type, c,
alloc_key_data_type_wrong,
if (fsck_err_on(new.data_type != gc.data_type,
trans, alloc_key_data_type_wrong,
"bucket %llu:%llu gen %u has wrong data_type"
": got %s, should be %s",
iter->pos.inode, iter->pos.offset,
@ -930,7 +845,8 @@ static int bch2_alloc_write_key(struct btree_trans *trans,
new.data_type = gc.data_type;
#define copy_bucket_field(_errtype, _f) \
if (fsck_err_on(new._f != gc._f, c, _errtype, \
if (fsck_err_on(new._f != gc._f, \
trans, _errtype, \
"bucket %llu:%llu gen %u data type %s has wrong " #_f \
": got %llu, should be %llu", \
iter->pos.inode, iter->pos.offset, \
@ -941,6 +857,7 @@ static int bch2_alloc_write_key(struct btree_trans *trans,
copy_bucket_field(alloc_key_gen_wrong, gen);
copy_bucket_field(alloc_key_dirty_sectors_wrong, dirty_sectors);
copy_bucket_field(alloc_key_stripe_sectors_wrong, stripe_sectors);
copy_bucket_field(alloc_key_cached_sectors_wrong, cached_sectors);
copy_bucket_field(alloc_key_stripe_wrong, stripe);
copy_bucket_field(alloc_key_stripe_redundancy_wrong, stripe_redundancy);
@ -993,14 +910,16 @@ static int bch2_gc_alloc_done(struct bch_fs *c)
static int bch2_gc_alloc_start(struct bch_fs *c)
{
int ret = 0;
for_each_member_device(c, ca) {
struct bucket_array *buckets = kvmalloc(sizeof(struct bucket_array) +
ca->mi.nbuckets * sizeof(struct bucket),
GFP_KERNEL|__GFP_ZERO);
if (!buckets) {
bch2_dev_put(ca);
bch_err(c, "error allocating ca->buckets[gc]");
return -BCH_ERR_ENOMEM_gc_alloc_start;
ret = -BCH_ERR_ENOMEM_gc_alloc_start;
break;
}
buckets->first_bucket = ca->mi.first_bucket;
@ -1010,27 +929,6 @@ static int bch2_gc_alloc_start(struct bch_fs *c)
rcu_assign_pointer(ca->buckets_gc, buckets);
}
struct bch_dev *ca = NULL;
int ret = bch2_trans_run(c,
for_each_btree_key(trans, iter, BTREE_ID_alloc, POS_MIN,
BTREE_ITER_prefetch, k, ({
ca = bch2_dev_iterate(c, ca, k.k->p.inode);
if (!ca) {
bch2_btree_iter_set_pos(&iter, POS(k.k->p.inode + 1, 0));
continue;
}
if (bucket_valid(ca, k.k->p.offset)) {
struct bch_alloc_v4 a_convert;
const struct bch_alloc_v4 *a = bch2_alloc_to_v4(k, &a_convert);
struct bucket *g = gc_bucket(ca, k.k->p.offset);
g->gen_valid = 1;
g->gen = a->gen;
}
0;
})));
bch2_dev_put(ca);
bch_err_fn(c, ret);
return ret;
}
@ -1060,8 +958,8 @@ static int bch2_gc_write_reflink_key(struct btree_trans *trans,
return -EINVAL;
}
if (fsck_err_on(r->refcount != le64_to_cpu(*refcount), c,
reflink_v_refcount_wrong,
if (fsck_err_on(r->refcount != le64_to_cpu(*refcount),
trans, reflink_v_refcount_wrong,
"reflink key has wrong refcount:\n"
" %s\n"
" should be %u",
@ -1159,7 +1057,8 @@ static int bch2_gc_write_stripes_key(struct btree_trans *trans,
if (bad)
bch2_bkey_val_to_text(&buf, c, k);
if (fsck_err_on(bad, c, stripe_sector_count_wrong,
if (fsck_err_on(bad,
trans, stripe_sector_count_wrong,
"%s", buf.buf)) {
struct bkey_i_stripe *new;
@ -1222,7 +1121,8 @@ int bch2_check_allocations(struct bch_fs *c)
bch2_btree_interior_updates_flush(c);
ret = bch2_gc_start(c) ?:
ret = bch2_gc_accounting_start(c) ?:
bch2_gc_start(c) ?:
bch2_gc_alloc_start(c) ?:
bch2_gc_reflink_start(c);
if (ret)
@ -1231,7 +1131,9 @@ int bch2_check_allocations(struct bch_fs *c)
gc_pos_set(c, gc_phase(GC_PHASE_start));
ret = bch2_mark_superblocks(c);
BUG_ON(ret);
bch_err_msg(c, ret, "marking superblocks");
if (ret)
goto out;
ret = bch2_gc_btrees(c);
if (ret)
@ -1239,15 +1141,11 @@ int bch2_check_allocations(struct bch_fs *c)
c->gc_count++;
bch2_journal_block(&c->journal);
out:
ret = bch2_gc_alloc_done(c) ?:
bch2_gc_done(c) ?:
bch2_gc_accounting_done(c) ?:
bch2_gc_stripes_done(c) ?:
bch2_gc_reflink_done(c);
bch2_journal_unblock(&c->journal);
out:
percpu_down_write(&c->mark_lock);
/* Indicates that gc is no longer in progress: */
__gc_pos_set(c, gc_phase(GC_PHASE_not_running));
@ -1342,7 +1240,7 @@ int bch2_gc_gens(struct bch_fs *c)
int ret;
/*
* Ideally we would be using state_lock and not gc_lock here, but that
* Ideally we would be using state_lock and not gc_gens_lock here, but that
* introduces a deadlock in the RO path - we currently take the state
* lock at the start of going RO, thus the gc thread may get stuck:
*/
@ -1350,7 +1248,8 @@ int bch2_gc_gens(struct bch_fs *c)
return 0;
trace_and_count(c, gc_gens_start, c);
down_read(&c->gc_lock);
down_read(&c->state_lock);
for_each_member_device(c, ca) {
struct bucket_gens *gens = bucket_gens(ca);
@ -1419,7 +1318,7 @@ err:
ca->oldest_gen = NULL;
}
up_read(&c->gc_lock);
up_read(&c->state_lock);
mutex_unlock(&c->gc_gens_lock);
if (!bch2_err_matches(ret, EROFS))
bch_err_fn(c, ret);

23
fs/bcachefs/btree_gc.h
View File

@ -47,17 +47,10 @@ static inline struct gc_pos gc_pos_btree(enum btree_id btree, unsigned level,
};
}
/*
* GC position of the pointers within a btree node: note, _not_ for &b->key
* itself, that lives in the parent node:
*/
static inline struct gc_pos gc_pos_btree_node(struct btree *b)
{
return gc_pos_btree(b->c.btree_id, b->c.level, b->key.k.p);
}
static inline int gc_btree_order(enum btree_id btree)
{
if (btree == BTREE_ID_alloc)
return -2;
if (btree == BTREE_ID_stripes)
return -1;
return btree;
@ -65,11 +58,11 @@ static inline int gc_btree_order(enum btree_id btree)
static inline int gc_pos_cmp(struct gc_pos l, struct gc_pos r)
{
return cmp_int(l.phase, r.phase) ?:
cmp_int(gc_btree_order(l.btree),
gc_btree_order(r.btree)) ?:
-cmp_int(l.level, r.level) ?:
bpos_cmp(l.pos, r.pos);
return cmp_int(l.phase, r.phase) ?:
cmp_int(gc_btree_order(l.btree),
gc_btree_order(r.btree)) ?:
cmp_int(l.level, r.level) ?:
bpos_cmp(l.pos, r.pos);
}
static inline bool gc_visited(struct bch_fs *c, struct gc_pos pos)
@ -85,6 +78,8 @@ static inline bool gc_visited(struct bch_fs *c, struct gc_pos pos)
return ret;
}
void bch2_gc_pos_to_text(struct printbuf *, struct gc_pos *);
int bch2_gc_gens(struct bch_fs *);
void bch2_gc_gens_async(struct bch_fs *);
void bch2_fs_gc_init(struct bch_fs *);

13
fs/bcachefs/btree_gc_types.h
View File

@ -4,11 +4,16 @@
#include <linux/generic-radix-tree.h>
#define GC_PHASES() \
x(not_running) \
x(start) \
x(sb) \
x(btree)
enum gc_phase {
GC_PHASE_not_running,
GC_PHASE_start,
GC_PHASE_sb,
GC_PHASE_btree,
#define x(n) GC_PHASE_##n,
GC_PHASES()
#undef x
};
struct gc_pos {

45
fs/bcachefs/btree_io.c
View File

@ -46,8 +46,6 @@ void bch2_btree_node_io_unlock(struct btree *b)
void bch2_btree_node_io_lock(struct btree *b)
{
bch2_assert_btree_nodes_not_locked();
wait_on_bit_lock_io(&b->flags, BTREE_NODE_write_in_flight,
TASK_UNINTERRUPTIBLE);
}
@ -66,16 +64,12 @@ void __bch2_btree_node_wait_on_write(struct btree *b)
void bch2_btree_node_wait_on_read(struct btree *b)
{
bch2_assert_btree_nodes_not_locked();
wait_on_bit_io(&b->flags, BTREE_NODE_read_in_flight,
TASK_UNINTERRUPTIBLE);
}
void bch2_btree_node_wait_on_write(struct btree *b)
{
bch2_assert_btree_nodes_not_locked();
wait_on_bit_io(&b->flags, BTREE_NODE_write_in_flight,
TASK_UNINTERRUPTIBLE);
}
@ -534,7 +528,7 @@ static void btree_err_msg(struct printbuf *out, struct bch_fs *c,
printbuf_indent_add(out, 2);
prt_printf(out, "\nnode offset %u/%u",
b->written, btree_ptr_sectors_written(&b->key));
b->written, btree_ptr_sectors_written(bkey_i_to_s_c(&b->key)));
if (i)
prt_printf(out, " bset u64s %u", le16_to_cpu(i->u64s));
if (k)
@ -585,7 +579,7 @@ static int __btree_err(int ret,
switch (ret) {
case -BCH_ERR_btree_node_read_err_fixable:
ret = !silent
? bch2_fsck_err(c, FSCK_CAN_FIX, err_type, "%s", out.buf)
? __bch2_fsck_err(c, NULL, FSCK_CAN_FIX, err_type, "%s", out.buf)
: -BCH_ERR_fsck_fix;
if (ret != -BCH_ERR_fsck_fix &&
ret != -BCH_ERR_fsck_ignore)
@ -689,6 +683,7 @@ static int validate_bset(struct bch_fs *c, struct bch_dev *ca,
int write, bool have_retry, bool *saw_error)
{
unsigned version = le16_to_cpu(i->version);
unsigned ptr_written = btree_ptr_sectors_written(bkey_i_to_s_c(&b->key));
struct printbuf buf1 = PRINTBUF;
struct printbuf buf2 = PRINTBUF;
int ret = 0;
@ -732,11 +727,13 @@ static int validate_bset(struct bch_fs *c, struct bch_dev *ca,
btree_node_unsupported_version,
"BSET_SEPARATE_WHITEOUTS no longer supported");
if (btree_err_on(offset + sectors > btree_sectors(c),
if (!write &&
btree_err_on(offset + sectors > (ptr_written ?: btree_sectors(c)),
-BCH_ERR_btree_node_read_err_fixable,
c, ca, b, i, NULL,
bset_past_end_of_btree_node,
"bset past end of btree node")) {
"bset past end of btree node (offset %u len %u but written %zu)",
offset, sectors, ptr_written ?: btree_sectors(c))) {
i->u64s = 0;
ret = 0;
goto out;
@ -1002,7 +999,8 @@ int bch2_btree_node_read_done(struct bch_fs *c, struct bch_dev *ca,
bool updated_range = b->key.k.type == KEY_TYPE_btree_ptr_v2 &&
BTREE_PTR_RANGE_UPDATED(&bkey_i_to_btree_ptr_v2(&b->key)->v);
unsigned u64s;
unsigned ptr_written = btree_ptr_sectors_written(&b->key);
unsigned ptr_written = btree_ptr_sectors_written(bkey_i_to_s_c(&b->key));
u64 max_journal_seq = 0;
struct printbuf buf = PRINTBUF;
int ret = 0, retry_read = 0, write = READ;
u64 start_time = local_clock();
@ -1178,6 +1176,8 @@ int bch2_btree_node_read_done(struct bch_fs *c, struct bch_dev *ca,
sort_iter_add(iter,
vstruct_idx(i, 0),
vstruct_last(i));
max_journal_seq = max(max_journal_seq, le64_to_cpu(i->journal_seq));
}
if (ptr_written) {
@ -1214,6 +1214,7 @@ int bch2_btree_node_read_done(struct bch_fs *c, struct bch_dev *ca,
swap(sorted, b->data);
set_btree_bset(b, b->set, &b->data->keys);
b->nsets = 1;
b->data->keys.journal_seq = cpu_to_le64(max_journal_seq);
BUG_ON(b->nr.live_u64s != u64s);
@ -1796,15 +1797,16 @@ int bch2_btree_root_read(struct bch_fs *c, enum btree_id id,
static void bch2_btree_complete_write(struct bch_fs *c, struct btree *b,
struct btree_write *w)
{
unsigned long old, new, v = READ_ONCE(b->will_make_reachable);
unsigned long old, new;
old = READ_ONCE(b->will_make_reachable);
do {
old = new = v;
new = old;
if (!(old & 1))
break;
new &= ~1UL;
} while ((v = cmpxchg(&b->will_make_reachable, old, new)) != old);
} while (!try_cmpxchg(&b->will_make_reachable, &old, new));
if (old & 1)
closure_put(&((struct btree_update *) new)->cl);
@ -1815,14 +1817,14 @@ static void bch2_btree_complete_write(struct bch_fs *c, struct btree *b,
static void __btree_node_write_done(struct bch_fs *c, struct btree *b)
{
struct btree_write *w = btree_prev_write(b);
unsigned long old, new, v;
unsigned long old, new;
unsigned type = 0;
bch2_btree_complete_write(c, b, w);
v = READ_ONCE(b->flags);
old = READ_ONCE(b->flags);
do {
old = new = v;
new = old;
if ((old & (1U << BTREE_NODE_dirty)) &&
(old & (1U << BTREE_NODE_need_write)) &&
@ -1842,7 +1844,7 @@ static void __btree_node_write_done(struct bch_fs *c, struct btree *b)
new &= ~(1U << BTREE_NODE_write_in_flight);
new &= ~(1U << BTREE_NODE_write_in_flight_inner);
}
} while ((v = cmpxchg(&b->flags, old, new)) != old);
} while (!try_cmpxchg(&b->flags, &old, new));
if (new & (1U << BTREE_NODE_write_in_flight))
__bch2_btree_node_write(c, b, BTREE_WRITE_ALREADY_STARTED|type);
@ -2014,8 +2016,9 @@ void __bch2_btree_node_write(struct bch_fs *c, struct btree *b, unsigned flags)
* dirty bit requires a write lock, we can't race with other threads
* redirtying it:
*/
old = READ_ONCE(b->flags);
do {
old = new = READ_ONCE(b->flags);
new = old;
if (!(old & (1 << BTREE_NODE_dirty)))
return;
@ -2046,7 +2049,7 @@ void __bch2_btree_node_write(struct bch_fs *c, struct btree *b, unsigned flags)
new |= (1 << BTREE_NODE_write_in_flight_inner);
new |= (1 << BTREE_NODE_just_written);
new ^= (1 << BTREE_NODE_write_idx);
} while (cmpxchg_acquire(&b->flags, old, new) != old);
} while (!try_cmpxchg_acquire(&b->flags, &old, new));
if (new & (1U << BTREE_NODE_need_write))
return;
@ -2133,7 +2136,7 @@ do_write:
if (!b->written &&
b->key.k.type == KEY_TYPE_btree_ptr_v2)
BUG_ON(btree_ptr_sectors_written(&b->key) != sectors_to_write);
BUG_ON(btree_ptr_sectors_written(bkey_i_to_s_c(&b->key)) != sectors_to_write);
memset(data + bytes_to_write, 0,
(sectors_to_write << 9) - bytes_to_write);

6
fs/bcachefs/btree_io.h
View File

@ -27,10 +27,10 @@ static inline void clear_btree_node_dirty_acct(struct bch_fs *c, struct btree *b
atomic_dec(&c->btree_cache.dirty);
}
static inline unsigned btree_ptr_sectors_written(struct bkey_i *k)
static inline unsigned btree_ptr_sectors_written(struct bkey_s_c k)
{
return k->k.type == KEY_TYPE_btree_ptr_v2
? le16_to_cpu(bkey_i_to_btree_ptr_v2(k)->v.sectors_written)
return k.k->type == KEY_TYPE_btree_ptr_v2
? le16_to_cpu(bkey_s_c_to_btree_ptr_v2(k).v->sectors_written)
: 0;
}

88
fs/bcachefs/btree_iter.c
View File

@ -325,7 +325,7 @@ out:
}
void bch2_assert_pos_locked(struct btree_trans *trans, enum btree_id id,
struct bpos pos, bool key_cache)
struct bpos pos)
{
bch2_trans_verify_not_unlocked(trans);
@ -336,19 +336,12 @@ void bch2_assert_pos_locked(struct btree_trans *trans, enum btree_id id,
btree_trans_sort_paths(trans);
trans_for_each_path_inorder(trans, path, iter) {
int cmp = cmp_int(path->btree_id, id) ?:
cmp_int(path->cached, key_cache);
if (cmp > 0)
break;
if (cmp < 0)
continue;
if (!btree_node_locked(path, 0) ||
if (path->btree_id != id ||
!btree_node_locked(path, 0) ||
!path->should_be_locked)
continue;
if (!key_cache) {
if (!path->cached) {
if (bkey_ge(pos, path->l[0].b->data->min_key) &&
bkey_le(pos, path->l[0].b->key.k.p))
return;
@ -361,9 +354,7 @@ void bch2_assert_pos_locked(struct btree_trans *trans, enum btree_id id,
bch2_dump_trans_paths_updates(trans);
bch2_bpos_to_text(&buf, pos);
panic("not locked: %s %s%s\n",
bch2_btree_id_str(id), buf.buf,
key_cache ? " cached" : "");
panic("not locked: %s %s\n", bch2_btree_id_str(id), buf.buf);
}
#else
@ -1465,7 +1456,7 @@ void bch2_dump_trans_updates(struct btree_trans *trans)
struct printbuf buf = PRINTBUF;
bch2_trans_updates_to_text(&buf, trans);
bch2_print_string_as_lines(KERN_ERR, buf.buf);
bch2_print_str(trans->c, buf.buf);
printbuf_exit(&buf);
}
@ -1482,6 +1473,14 @@ static void bch2_btree_path_to_text_short(struct printbuf *out, struct btree_tra
path->level);
bch2_bpos_to_text(out, path->pos);
if (!path->cached && btree_node_locked(path, path->level)) {
prt_char(out, ' ');
struct btree *b = path_l(path)->b;
bch2_bpos_to_text(out, b->data->min_key);
prt_char(out, '-');
bch2_bpos_to_text(out, b->key.k.p);
}
#ifdef TRACK_PATH_ALLOCATED
prt_printf(out, " %pS", (void *) path->ip_allocated);
#endif
@ -1557,7 +1556,7 @@ void __bch2_dump_trans_paths_updates(struct btree_trans *trans, bool nosort)
__bch2_trans_paths_to_text(&buf, trans, nosort);
bch2_trans_updates_to_text(&buf, trans);
bch2_print_string_as_lines(KERN_ERR, buf.buf);
bch2_print_str(trans->c, buf.buf);
printbuf_exit(&buf);
}
@ -1801,13 +1800,12 @@ struct bkey_s_c bch2_btree_path_peek_slot(struct btree_path *path, struct bkey *
goto hole;
} else {
struct bkey_cached *ck = (void *) path->l[0].b;
EBUG_ON(ck &&
(path->btree_id != ck->key.btree_id ||
!bkey_eq(path->pos, ck->key.pos)));
if (!ck || !ck->valid)
if (!ck)
return bkey_s_c_null;
EBUG_ON(path->btree_id != ck->key.btree_id ||
!bkey_eq(path->pos, ck->key.pos));
*u = ck->k->k;
k = bkey_i_to_s_c(ck->k);
}
@ -3173,6 +3171,9 @@ got_trans:
trans->paths_allocated[0] = 1;
static struct lock_class_key lockdep_key;
lockdep_init_map(&trans->dep_map, "bcachefs_btree", &lockdep_key, 0);
if (fn_idx < BCH_TRANSACTIONS_NR) {
trans->fn = bch2_btree_transaction_fns[fn_idx];
@ -3240,15 +3241,6 @@ void bch2_trans_put(struct btree_trans *trans)
srcu_read_unlock(&c->btree_trans_barrier, trans->srcu_idx);
}
if (trans->fs_usage_deltas) {
if (trans->fs_usage_deltas->size + sizeof(trans->fs_usage_deltas) ==
REPLICAS_DELTA_LIST_MAX)
mempool_free(trans->fs_usage_deltas,
&c->replicas_delta_pool);
else
kfree(trans->fs_usage_deltas);
}
if (unlikely(trans->journal_replay_not_finished))
bch2_journal_keys_put(c);
@ -3284,6 +3276,21 @@ void bch2_trans_put(struct btree_trans *trans)
}
}
bool bch2_current_has_btree_trans(struct bch_fs *c)
{
seqmutex_lock(&c->btree_trans_lock);
struct btree_trans *trans;
bool ret = false;
list_for_each_entry(trans, &c->btree_trans_list, list)
if (trans->locking_wait.task == current &&
trans->locked) {
ret = true;
break;
}
seqmutex_unlock(&c->btree_trans_lock);
return ret;
}
static void __maybe_unused
bch2_btree_bkey_cached_common_to_text(struct printbuf *out,
struct btree_bkey_cached_common *b)
@ -3437,7 +3444,22 @@ int bch2_fs_btree_iter_init(struct bch_fs *c)
mempool_init_kmalloc_pool(&c->btree_trans_mem_pool, 1,
BTREE_TRANS_MEM_MAX) ?:
init_srcu_struct(&c->btree_trans_barrier);
if (!ret)
c->btree_trans_barrier_initialized = true;
return ret;
if (ret)
return ret;
/*
* static annotation (hackily done) for lock ordering of reclaim vs.
* btree node locks:
*/
#ifdef CONFIG_LOCKDEP
fs_reclaim_acquire(GFP_KERNEL);
struct btree_trans *trans = bch2_trans_get(c);
trans_set_locked(trans);
bch2_trans_put(trans);
fs_reclaim_release(GFP_KERNEL);
#endif
c->btree_trans_barrier_initialized = true;
return 0;
}

15
fs/bcachefs/btree_iter.h
View File

@ -268,12 +268,11 @@ static inline int bch2_trans_mutex_lock(struct btree_trans *trans, struct mutex
#ifdef CONFIG_BCACHEFS_DEBUG
void bch2_trans_verify_paths(struct btree_trans *);
void bch2_assert_pos_locked(struct btree_trans *, enum btree_id,
struct bpos, bool);
void bch2_assert_pos_locked(struct btree_trans *, enum btree_id, struct bpos);
#else
static inline void bch2_trans_verify_paths(struct btree_trans *trans) {}
static inline void bch2_assert_pos_locked(struct btree_trans *trans, enum btree_id id,
struct bpos pos, bool key_cache) {}
struct bpos pos) {}
#endif
void bch2_btree_path_fix_key_modified(struct btree_trans *trans,
@ -866,6 +865,14 @@ __bch2_btree_iter_peek_and_restart(struct btree_trans *trans,
_p; \
})
#define bch2_trans_run(_c, _do) \
({ \
struct btree_trans *trans = bch2_trans_get(_c); \
int _ret = (_do); \
bch2_trans_put(trans); \
_ret; \
})
void bch2_trans_updates_to_text(struct printbuf *, struct btree_trans *);
void bch2_btree_path_to_text(struct printbuf *, struct btree_trans *, btree_path_idx_t);
void bch2_trans_paths_to_text(struct printbuf *, struct btree_trans *);
@ -875,6 +882,8 @@ void bch2_dump_trans_paths_updates(struct btree_trans *);
struct btree_trans *__bch2_trans_get(struct bch_fs *, unsigned);
void bch2_trans_put(struct btree_trans *);
bool bch2_current_has_btree_trans(struct bch_fs *);
extern const char *bch2_btree_transaction_fns[BCH_TRANSACTIONS_NR];
unsigned bch2_trans_get_fn_idx(const char *);

23
fs/bcachefs/btree_journal_iter.c
View File

@ -16,21 +16,6 @@
* operations for the regular btree iter code to use:
*/
static int __journal_key_cmp(enum btree_id l_btree_id,
unsigned l_level,
struct bpos l_pos,
const struct journal_key *r)
{
return (cmp_int(l_btree_id, r->btree_id) ?:
cmp_int(l_level, r->level) ?:
bpos_cmp(l_pos, r->k->k.p));
}
static int journal_key_cmp(const struct journal_key *l, const struct journal_key *r)
{
return __journal_key_cmp(l->btree_id, l->level, l->k->k.p, r);
}
static inline size_t idx_to_pos(struct journal_keys *keys, size_t idx)
{
size_t gap_size = keys->size - keys->nr;
@ -548,7 +533,13 @@ static void __journal_keys_sort(struct journal_keys *keys)
struct journal_key *dst = keys->data;
darray_for_each(*keys, src) {
if (src + 1 < &darray_top(*keys) &&
/*
* We don't accumulate accounting keys here because we have to
* compare each individual accounting key against the version in
* the btree during replay:
*/
if (src->k->k.type != KEY_TYPE_accounting &&
src + 1 < &darray_top(*keys) &&
!journal_key_cmp(src, src + 1))
continue;

17
fs/bcachefs/btree_journal_iter.h
View File

@ -2,6 +2,8 @@
#ifndef _BCACHEFS_BTREE_JOURNAL_ITER_H
#define _BCACHEFS_BTREE_JOURNAL_ITER_H
#include "bkey.h"
struct journal_iter {
struct list_head list;
enum btree_id btree_id;
@ -26,6 +28,21 @@ struct btree_and_journal_iter {
bool prefetch;
};
static inline int __journal_key_cmp(enum btree_id l_btree_id,
unsigned l_level,
struct bpos l_pos,
const struct journal_key *r)
{
return (cmp_int(l_btree_id, r->btree_id) ?:
cmp_int(l_level, r->level) ?:
bpos_cmp(l_pos, r->k->k.p));
}
static inline int journal_key_cmp(const struct journal_key *l, const struct journal_key *r)
{
return __journal_key_cmp(l->btree_id, l->level, l->k->k.p, r);
}
struct bkey_i *bch2_journal_keys_peek_upto(struct bch_fs *, enum btree_id,
unsigned, struct bpos, struct bpos, size_t *);
struct bkey_i *bch2_journal_keys_peek_slot(struct bch_fs *, enum btree_id,

342
fs/bcachefs/btree_key_cache.c
View File

@ -39,6 +39,15 @@ static const struct rhashtable_params bch2_btree_key_cache_params = {
.automatic_shrinking = true,
};
static inline void btree_path_cached_set(struct btree_trans *trans, struct btree_path *path,
struct bkey_cached *ck,
enum btree_node_locked_type lock_held)
{
path->l[0].lock_seq = six_lock_seq(&ck->c.lock);
path->l[0].b = (void *) ck;
mark_btree_node_locked(trans, path, 0, lock_held);
}
__flatten
inline struct bkey_cached *
bch2_btree_key_cache_find(struct bch_fs *c, enum btree_id btree_id, struct bpos pos)
@ -196,9 +205,22 @@ static void bkey_cached_free_fast(struct btree_key_cache *bc,
six_unlock_intent(&ck->c.lock);
}
static struct bkey_cached *__bkey_cached_alloc(unsigned key_u64s, gfp_t gfp)
{
struct bkey_cached *ck = kmem_cache_zalloc(bch2_key_cache, gfp);
if (unlikely(!ck))
return NULL;
ck->k = kmalloc(key_u64s * sizeof(u64), gfp);
if (unlikely(!ck->k)) {
kmem_cache_free(bch2_key_cache, ck);
return NULL;
}
ck->u64s = key_u64s;
return ck;
}
static struct bkey_cached *
bkey_cached_alloc(struct btree_trans *trans, struct btree_path *path,
bool *was_new)
bkey_cached_alloc(struct btree_trans *trans, struct btree_path *path, unsigned key_u64s)
{
struct bch_fs *c = trans->c;
struct btree_key_cache *bc = &c->btree_key_cache;
@ -259,9 +281,7 @@ bkey_cached_alloc(struct btree_trans *trans, struct btree_path *path,
return ERR_PTR(ret);
}
path->l[0].b = (void *) ck;
path->l[0].lock_seq = six_lock_seq(&ck->c.lock);
mark_btree_node_locked(trans, path, 0, BTREE_NODE_INTENT_LOCKED);
btree_path_cached_set(trans, path, ck, BTREE_NODE_INTENT_LOCKED);
ret = bch2_btree_node_lock_write(trans, path, &ck->c);
if (unlikely(ret)) {
@ -274,8 +294,10 @@ bkey_cached_alloc(struct btree_trans *trans, struct btree_path *path,
}
ck = allocate_dropping_locks(trans, ret,
kmem_cache_zalloc(bch2_key_cache, _gfp));
__bkey_cached_alloc(key_u64s, _gfp));
if (ret) {
if (ck)
kfree(ck->k);
kmem_cache_free(bch2_key_cache, ck);
return ERR_PTR(ret);
}
@ -289,7 +311,6 @@ bkey_cached_alloc(struct btree_trans *trans, struct btree_path *path,
ck->c.cached = true;
BUG_ON(!six_trylock_intent(&ck->c.lock));
BUG_ON(!six_trylock_write(&ck->c.lock));
*was_new = true;
return ck;
}
@ -319,71 +340,102 @@ out:
return ck;
}
static struct bkey_cached *
btree_key_cache_create(struct btree_trans *trans, struct btree_path *path)
static int btree_key_cache_create(struct btree_trans *trans, struct btree_path *path,
struct bkey_s_c k)
{
struct bch_fs *c = trans->c;
struct btree_key_cache *bc = &c->btree_key_cache;
struct bkey_cached *ck;
bool was_new = false;
ck = bkey_cached_alloc(trans, path, &was_new);
if (IS_ERR(ck))
return ck;
/*
* bch2_varint_decode can read past the end of the buffer by at
* most 7 bytes (it won't be used):
*/
unsigned key_u64s = k.k->u64s + 1;
/*
* Allocate some extra space so that the transaction commit path is less
* likely to have to reallocate, since that requires a transaction
* restart:
*/
key_u64s = min(256U, (key_u64s * 3) / 2);
key_u64s = roundup_pow_of_two(key_u64s);
struct bkey_cached *ck = bkey_cached_alloc(trans, path, key_u64s);
int ret = PTR_ERR_OR_ZERO(ck);
if (ret)
return ret;
if (unlikely(!ck)) {
ck = bkey_cached_reuse(bc);
if (unlikely(!ck)) {
bch_err(c, "error allocating memory for key cache item, btree %s",
bch2_btree_id_str(path->btree_id));
return ERR_PTR(-BCH_ERR_ENOMEM_btree_key_cache_create);
return -BCH_ERR_ENOMEM_btree_key_cache_create;
}
mark_btree_node_locked(trans, path, 0, BTREE_NODE_INTENT_LOCKED);
}
ck->c.level = 0;
ck->c.btree_id = path->btree_id;
ck->key.btree_id = path->btree_id;
ck->key.pos = path->pos;
ck->valid = false;
ck->flags = 1U << BKEY_CACHED_ACCESSED;
if (unlikely(rhashtable_lookup_insert_fast(&bc->table,
&ck->hash,
bch2_btree_key_cache_params))) {
/* We raced with another fill: */
if (unlikely(key_u64s > ck->u64s)) {
mark_btree_node_locked_noreset(path, 0, BTREE_NODE_UNLOCKED);
if (likely(was_new)) {
six_unlock_write(&ck->c.lock);
six_unlock_intent(&ck->c.lock);
kfree(ck);
} else {
bkey_cached_free_fast(bc, ck);
struct bkey_i *new_k = allocate_dropping_locks(trans, ret,
kmalloc(key_u64s * sizeof(u64), _gfp));
if (unlikely(!new_k)) {
bch_err(trans->c, "error allocating memory for key cache key, btree %s u64s %u",
bch2_btree_id_str(ck->key.btree_id), key_u64s);
ret = -BCH_ERR_ENOMEM_btree_key_cache_fill;
} else if (ret) {
kfree(new_k);
goto err;
}
mark_btree_node_locked(trans, path, 0, BTREE_NODE_UNLOCKED);
return NULL;
kfree(ck->k);
ck->k = new_k;
ck->u64s = key_u64s;
}
atomic_long_inc(&bc->nr_keys);
bkey_reassemble(ck->k, k);
ret = rhashtable_lookup_insert_fast(&bc->table, &ck->hash, bch2_btree_key_cache_params);
if (unlikely(ret)) /* raced with another fill? */
goto err;
atomic_long_inc(&bc->nr_keys);
six_unlock_write(&ck->c.lock);
return ck;
enum six_lock_type lock_want = __btree_lock_want(path, 0);
if (lock_want == SIX_LOCK_read)
six_lock_downgrade(&ck->c.lock);
btree_path_cached_set(trans, path, ck, (enum btree_node_locked_type) lock_want);
path->uptodate = BTREE_ITER_UPTODATE;
return 0;
err:
bkey_cached_free_fast(bc, ck);
mark_btree_node_locked_noreset(path, 0, BTREE_NODE_UNLOCKED);
return ret;
}
static int btree_key_cache_fill(struct btree_trans *trans,
struct btree_path *ck_path,
struct bkey_cached *ck)
static noinline int btree_key_cache_fill(struct btree_trans *trans,
struct btree_path *ck_path,
unsigned flags)
{
if (flags & BTREE_ITER_cached_nofill) {
ck_path->uptodate = BTREE_ITER_UPTODATE;
return 0;
}
struct bch_fs *c = trans->c;
struct btree_iter iter;
struct bkey_s_c k;
unsigned new_u64s = 0;
struct bkey_i *new_k = NULL;
int ret;
bch2_trans_iter_init(trans, &iter, ck->key.btree_id, ck->key.pos,
bch2_trans_iter_init(trans, &iter, ck_path->btree_id, ck_path->pos,
BTREE_ITER_key_cache_fill|
BTREE_ITER_cached_nofill);
iter.flags &= ~BTREE_ITER_with_journal;
@ -392,70 +444,15 @@ static int btree_key_cache_fill(struct btree_trans *trans,
if (ret)
goto err;
if (!bch2_btree_node_relock(trans, ck_path, 0)) {
trace_and_count(trans->c, trans_restart_relock_key_cache_fill, trans, _THIS_IP_, ck_path);
ret = btree_trans_restart(trans, BCH_ERR_transaction_restart_key_cache_fill);
/* Recheck after btree lookup, before allocating: */
ret = bch2_btree_key_cache_find(c, ck_path->btree_id, ck_path->pos) ? -EEXIST : 0;
if (unlikely(ret))
goto out;
ret = btree_key_cache_create(trans, ck_path, k);
if (ret)
goto err;
}
/*
* bch2_varint_decode can read past the end of the buffer by at
* most 7 bytes (it won't be used):
*/
new_u64s = k.k->u64s + 1;
/*
* Allocate some extra space so that the transaction commit path is less
* likely to have to reallocate, since that requires a transaction
* restart:
*/
new_u64s = min(256U, (new_u64s * 3) / 2);
if (new_u64s > ck->u64s) {
new_u64s = roundup_pow_of_two(new_u64s);
new_k = kmalloc(new_u64s * sizeof(u64), GFP_NOWAIT|__GFP_NOWARN);
if (!new_k) {
bch2_trans_unlock(trans);
new_k = kmalloc(new_u64s * sizeof(u64), GFP_KERNEL);
if (!new_k) {
bch_err(trans->c, "error allocating memory for key cache key, btree %s u64s %u",
bch2_btree_id_str(ck->key.btree_id), new_u64s);
ret = -BCH_ERR_ENOMEM_btree_key_cache_fill;
goto err;
}
ret = bch2_trans_relock(trans);
if (ret) {
kfree(new_k);
goto err;
}
if (!bch2_btree_node_relock(trans, ck_path, 0)) {
kfree(new_k);
trace_and_count(trans->c, trans_restart_relock_key_cache_fill, trans, _THIS_IP_, ck_path);
ret = btree_trans_restart(trans, BCH_ERR_transaction_restart_key_cache_fill);
goto err;
}
}
}
ret = bch2_btree_node_lock_write(trans, ck_path, &ck_path->l[0].b->c);
if (ret) {
kfree(new_k);
goto err;
}
if (new_k) {
kfree(ck->k);
ck->u64s = new_u64s;
ck->k = new_k;
}
bkey_reassemble(ck->k, k);
ck->valid = true;
bch2_btree_node_unlock_write(trans, ck_path, ck_path->l[0].b);
out:
/* We're not likely to need this iterator again: */
bch2_set_btree_iter_dontneed(&iter);
err:
@ -463,137 +460,62 @@ err:
return ret;
}
static noinline int
bch2_btree_path_traverse_cached_slowpath(struct btree_trans *trans, struct btree_path *path,
unsigned flags)
static inline int btree_path_traverse_cached_fast(struct btree_trans *trans,
struct btree_path *path)
{
struct bch_fs *c = trans->c;
struct bkey_cached *ck;
int ret = 0;
BUG_ON(path->level);
path->l[1].b = NULL;
if (bch2_btree_node_relock_notrace(trans, path, 0)) {
ck = (void *) path->l[0].b;
goto fill;
}
retry:
ck = bch2_btree_key_cache_find(c, path->btree_id, path->pos);
if (!ck) {
ck = btree_key_cache_create(trans, path);
ret = PTR_ERR_OR_ZERO(ck);
if (ret)
goto err;
if (!ck)
goto retry;
if (!ck)
return -ENOENT;
mark_btree_node_locked(trans, path, 0, BTREE_NODE_INTENT_LOCKED);
path->locks_want = 1;
} else {
enum six_lock_type lock_want = __btree_lock_want(path, 0);
enum six_lock_type lock_want = __btree_lock_want(path, 0);
ret = btree_node_lock(trans, path, (void *) ck, 0,
lock_want, _THIS_IP_);
if (bch2_err_matches(ret, BCH_ERR_transaction_restart))
goto err;
int ret = btree_node_lock(trans, path, (void *) ck, 0, lock_want, _THIS_IP_);
if (ret)
return ret;
BUG_ON(ret);
if (ck->key.btree_id != path->btree_id ||
!bpos_eq(ck->key.pos, path->pos)) {
six_unlock_type(&ck->c.lock, lock_want);
goto retry;
}
mark_btree_node_locked(trans, path, 0,
(enum btree_node_locked_type) lock_want);
}
path->l[0].lock_seq = six_lock_seq(&ck->c.lock);
path->l[0].b = (void *) ck;
fill:
path->uptodate = BTREE_ITER_UPTODATE;
if (!ck->valid && !(flags & BTREE_ITER_cached_nofill)) {
ret = bch2_btree_path_upgrade(trans, path, 1) ?:
btree_key_cache_fill(trans, path, ck) ?:
bch2_btree_path_relock(trans, path, _THIS_IP_);
if (ret)
goto err;
path->uptodate = BTREE_ITER_UPTODATE;
if (ck->key.btree_id != path->btree_id ||
!bpos_eq(ck->key.pos, path->pos)) {
six_unlock_type(&ck->c.lock, lock_want);
goto retry;
}
if (!test_bit(BKEY_CACHED_ACCESSED, &ck->flags))
set_bit(BKEY_CACHED_ACCESSED, &ck->flags);
BUG_ON(btree_node_locked_type(path, 0) != btree_lock_want(path, 0));
BUG_ON(path->uptodate);
return ret;
err:
path->uptodate = BTREE_ITER_NEED_TRAVERSE;
if (!bch2_err_matches(ret, BCH_ERR_transaction_restart)) {
btree_node_unlock(trans, path, 0);
path->l[0].b = ERR_PTR(ret);
}
return ret;
btree_path_cached_set(trans, path, ck, (enum btree_node_locked_type) lock_want);
path->uptodate = BTREE_ITER_UPTODATE;
return 0;
}
int bch2_btree_path_traverse_cached(struct btree_trans *trans, struct btree_path *path,
unsigned flags)
{
struct bch_fs *c = trans->c;
struct bkey_cached *ck;
int ret = 0;
EBUG_ON(path->level);
path->l[1].b = NULL;
if (bch2_btree_node_relock_notrace(trans, path, 0)) {
ck = (void *) path->l[0].b;
goto fill;
path->uptodate = BTREE_ITER_UPTODATE;
return 0;
}
retry:
ck = bch2_btree_key_cache_find(c, path->btree_id, path->pos);
if (!ck) {
return bch2_btree_path_traverse_cached_slowpath(trans, path, flags);
} else {
enum six_lock_type lock_want = __btree_lock_want(path, 0);
ret = btree_node_lock(trans, path, (void *) ck, 0,
lock_want, _THIS_IP_);
EBUG_ON(ret && !bch2_err_matches(ret, BCH_ERR_transaction_restart));
int ret;
do {
ret = btree_path_traverse_cached_fast(trans, path);
if (unlikely(ret == -ENOENT))
ret = btree_key_cache_fill(trans, path, flags);
} while (ret == -EEXIST);
if (ret)
return ret;
if (ck->key.btree_id != path->btree_id ||
!bpos_eq(ck->key.pos, path->pos)) {
six_unlock_type(&ck->c.lock, lock_want);
goto retry;
if (unlikely(ret)) {
path->uptodate = BTREE_ITER_NEED_TRAVERSE;
if (!bch2_err_matches(ret, BCH_ERR_transaction_restart)) {
btree_node_unlock(trans, path, 0);
path->l[0].b = ERR_PTR(ret);
}
mark_btree_node_locked(trans, path, 0,
(enum btree_node_locked_type) lock_want);
}
path->l[0].lock_seq = six_lock_seq(&ck->c.lock);
path->l[0].b = (void *) ck;
fill:
if (!ck->valid)
return bch2_btree_path_traverse_cached_slowpath(trans, path, flags);
if (!test_bit(BKEY_CACHED_ACCESSED, &ck->flags))
set_bit(BKEY_CACHED_ACCESSED, &ck->flags);
path->uptodate = BTREE_ITER_UPTODATE;
EBUG_ON(!ck->valid);
EBUG_ON(btree_node_locked_type(path, 0) != btree_lock_want(path, 0));
return ret;
}
@ -632,8 +554,6 @@ static int btree_key_cache_flush_pos(struct btree_trans *trans,
goto out;
}
BUG_ON(!ck->valid);
if (journal_seq && ck->journal.seq != journal_seq)
goto out;
@ -755,7 +675,6 @@ bool bch2_btree_insert_key_cached(struct btree_trans *trans,
BUG_ON(insert->k.u64s > ck->u64s);
bkey_copy(ck->k, insert);
ck->valid = true;
if (!test_bit(BKEY_CACHED_DIRTY, &ck->flags)) {
EBUG_ON(test_bit(BCH_FS_clean_shutdown, &c->flags));
@ -794,10 +713,9 @@ void bch2_btree_key_cache_drop(struct btree_trans *trans,
struct btree_path *path)
{
struct bch_fs *c = trans->c;
struct btree_key_cache *bc = &c->btree_key_cache;
struct bkey_cached *ck = (void *) path->l[0].b;
BUG_ON(!ck->valid);
/*
* We just did an update to the btree, bypassing the key cache: the key
* cache key is now stale and must be dropped, even if dirty:
@ -808,7 +726,11 @@ void bch2_btree_key_cache_drop(struct btree_trans *trans,
bch2_journal_pin_drop(&c->journal, &ck->journal);
}
ck->valid = false;
bkey_cached_evict(bc, ck);
bkey_cached_free_fast(bc, ck);
mark_btree_node_locked(trans, path, 0, BTREE_NODE_UNLOCKED);
btree_path_set_dirty(path, BTREE_ITER_NEED_TRAVERSE);
}
static unsigned long bch2_btree_key_cache_scan(struct shrinker *shrink,

12
fs/bcachefs/btree_locking.c
View File

@ -10,19 +10,9 @@ void bch2_btree_lock_init(struct btree_bkey_cached_common *b,
enum six_lock_init_flags flags)
{
__six_lock_init(&b->lock, "b->c.lock", &bch2_btree_node_lock_key, flags);
lockdep_set_novalidate_class(&b->lock);
lockdep_set_notrack_class(&b->lock);
}
#ifdef CONFIG_LOCKDEP
void bch2_assert_btree_nodes_not_locked(void)
{
#if 0
//Re-enable when lock_class_is_held() is merged:
BUG_ON(lock_class_is_held(&bch2_btree_node_lock_key));
#endif
}
#endif
/* Btree node locking: */
struct six_lock_count bch2_btree_node_lock_counts(struct btree_trans *trans,

9
fs/bcachefs/btree_locking.h
View File

@ -15,12 +15,6 @@
void bch2_btree_lock_init(struct btree_bkey_cached_common *, enum six_lock_init_flags);
#ifdef CONFIG_LOCKDEP
void bch2_assert_btree_nodes_not_locked(void);
#else
static inline void bch2_assert_btree_nodes_not_locked(void) {}
#endif
void bch2_trans_unlock_noassert(struct btree_trans *);
static inline bool is_btree_node(struct btree_path *path, unsigned l)
@ -136,6 +130,7 @@ static inline void btree_node_unlock(struct btree_trans *trans,
int lock_type = btree_node_locked_type(path, level);
EBUG_ON(level >= BTREE_MAX_DEPTH);
EBUG_ON(lock_type == BTREE_NODE_WRITE_LOCKED);
if (lock_type != BTREE_NODE_UNLOCKED) {
six_unlock_type(&path->l[level].b->c.lock, lock_type);
@ -196,6 +191,7 @@ int bch2_six_check_for_deadlock(struct six_lock *lock, void *p);
static inline void trans_set_locked(struct btree_trans *trans)
{
if (!trans->locked) {
lock_acquire_exclusive(&trans->dep_map, 0, 0, NULL, _THIS_IP_);
trans->locked = true;
trans->last_unlock_ip = 0;
@ -207,6 +203,7 @@ static inline void trans_set_locked(struct btree_trans *trans)
static inline void trans_set_unlocked(struct btree_trans *trans)
{
if (trans->locked) {
lock_release(&trans->dep_map, _THIS_IP_);
trans->locked = false;
trans->last_unlock_ip = _RET_IP_;

51
fs/bcachefs/btree_node_scan.c
View File

@ -22,7 +22,9 @@ struct find_btree_nodes_worker {
static void found_btree_node_to_text(struct printbuf *out, struct bch_fs *c, const struct found_btree_node *n)
{
prt_printf(out, "%s l=%u seq=%u cookie=%llx ", bch2_btree_id_str(n->btree_id), n->level, n->seq, n->cookie);
prt_printf(out, "%s l=%u seq=%u journal_seq=%llu cookie=%llx ",
bch2_btree_id_str(n->btree_id), n->level, n->seq,
n->journal_seq, n->cookie);
bch2_bpos_to_text(out, n->min_key);
prt_str(out, "-");
bch2_bpos_to_text(out, n->max_key);
@ -63,19 +65,37 @@ static void found_btree_node_to_key(struct bkey_i *k, const struct found_btree_n
memcpy(bp->v.start, f->ptrs, sizeof(struct bch_extent_ptr) * f->nr_ptrs);
}
static inline u64 bkey_journal_seq(struct bkey_s_c k)
{
switch (k.k->type) {
case KEY_TYPE_inode_v3:
return le64_to_cpu(bkey_s_c_to_inode_v3(k).v->bi_journal_seq);
default:
return 0;
}
}
static bool found_btree_node_is_readable(struct btree_trans *trans,
struct found_btree_node *f)
{
struct { __BKEY_PADDED(k, BKEY_BTREE_PTR_VAL_U64s_MAX); } k;
struct { __BKEY_PADDED(k, BKEY_BTREE_PTR_VAL_U64s_MAX); } tmp;
found_btree_node_to_key(&k.k, f);
found_btree_node_to_key(&tmp.k, f);
struct btree *b = bch2_btree_node_get_noiter(trans, &k.k, f->btree_id, f->level, false);
struct btree *b = bch2_btree_node_get_noiter(trans, &tmp.k, f->btree_id, f->level, false);
bool ret = !IS_ERR_OR_NULL(b);
if (!ret)
return ret;
f->sectors_written = b->written;
f->journal_seq = le64_to_cpu(b->data->keys.journal_seq);
struct bkey_s_c k;
struct bkey unpacked;
struct btree_node_iter iter;
for_each_btree_node_key_unpack(b, k, &iter, &unpacked)
f->journal_seq = max(f->journal_seq, bkey_journal_seq(k));
six_unlock_read(&b->c.lock);
/*
@ -84,7 +104,7 @@ static bool found_btree_node_is_readable(struct btree_trans *trans,
* this node
*/
if (b != btree_node_root(trans->c, b))
bch2_btree_node_evict(trans, &k.k);
bch2_btree_node_evict(trans, &tmp.k);
return ret;
}
@ -105,7 +125,8 @@ static int found_btree_node_cmp_cookie(const void *_l, const void *_r)
static int found_btree_node_cmp_time(const struct found_btree_node *l,
const struct found_btree_node *r)
{
return cmp_int(l->seq, r->seq);
return cmp_int(l->seq, r->seq) ?:
cmp_int(l->journal_seq, r->journal_seq);
}
static int found_btree_node_cmp_pos(const void *_l, const void *_r)
@ -309,15 +330,15 @@ again:
} else if (n->level) {
n->overwritten = true;
} else {
struct printbuf buf = PRINTBUF;
prt_str(&buf, "overlapping btree nodes with same seq! halting\n ");
found_btree_node_to_text(&buf, c, start);
prt_str(&buf, "\n ");
found_btree_node_to_text(&buf, c, n);
bch_err(c, "%s", buf.buf);
printbuf_exit(&buf);
return -BCH_ERR_fsck_repair_unimplemented;
if (bpos_cmp(start->max_key, n->max_key) >= 0)
n->overwritten = true;
else {
n->range_updated = true;
n->min_key = bpos_successor(start->max_key);
n->range_updated = true;
bubble_up(n, end);
goto again;
}
}
}

1
fs/bcachefs/btree_node_scan_types.h
View File

@ -11,6 +11,7 @@ struct found_btree_node {
u8 level;
unsigned sectors_written;
u32 seq;
u64 journal_seq;
u64 cookie;
struct bpos min_key;

171
fs/bcachefs/btree_trans_commit.c
View File

@ -10,6 +10,7 @@
#include "btree_update_interior.h"
#include "btree_write_buffer.h"
#include "buckets.h"
#include "disk_accounting.h"
#include "errcode.h"
#include "error.h"
#include "journal.h"
@ -136,7 +137,8 @@ static inline void bch2_trans_unlock_write(struct btree_trans *trans)
{
if (likely(trans->write_locked)) {
trans_for_each_update(trans, i)
if (!same_leaf_as_prev(trans, i))
if (btree_node_locked_type(trans->paths + i->path, i->level) ==
BTREE_NODE_WRITE_LOCKED)
bch2_btree_node_unlock_write_inlined(trans,
trans->paths + i->path, insert_l(trans, i)->b);
trans->write_locked = false;
@ -228,14 +230,14 @@ static int __btree_node_flush(struct journal *j, struct journal_entry_pin *pin,
struct btree_write *w = container_of(pin, struct btree_write, journal);
struct btree *b = container_of(w, struct btree, writes[i]);
struct btree_trans *trans = bch2_trans_get(c);
unsigned long old, new, v;
unsigned long old, new;
unsigned idx = w - b->writes;
btree_node_lock_nopath_nofail(trans, &b->c, SIX_LOCK_read);
v = READ_ONCE(b->flags);
old = READ_ONCE(b->flags);
do {
old = new = v;
new = old;
if (!(old & (1 << BTREE_NODE_dirty)) ||
!!(old & (1 << BTREE_NODE_write_idx)) != idx ||
@ -245,7 +247,7 @@ static int __btree_node_flush(struct journal *j, struct journal_entry_pin *pin,
new &= ~BTREE_WRITE_TYPE_MASK;
new |= BTREE_WRITE_journal_reclaim;
new |= 1 << BTREE_NODE_need_write;
} while ((v = cmpxchg(&b->flags, old, new)) != old);
} while (!try_cmpxchg(&b->flags, &old, new));
btree_node_write_if_need(c, b, SIX_LOCK_read);
six_unlock_read(&b->c.lock);
@ -456,34 +458,36 @@ static int run_one_mem_trigger(struct btree_trans *trans,
struct btree_insert_entry *i,
unsigned flags)
{
struct bkey_s_c old = { &i->old_k, i->old_v };
struct bkey_i *new = i->k;
const struct bkey_ops *old_ops = bch2_bkey_type_ops(old.k->type);
const struct bkey_ops *new_ops = bch2_bkey_type_ops(i->k->k.type);
int ret;
verify_update_old_key(trans, i);
if (unlikely(flags & BTREE_TRIGGER_norun))
return 0;
if (old_ops->trigger == new_ops->trigger) {
ret = bch2_key_trigger(trans, i->btree_id, i->level,
struct bkey_s_c old = { &i->old_k, i->old_v };
struct bkey_i *new = i->k;
const struct bkey_ops *old_ops = bch2_bkey_type_ops(old.k->type);
const struct bkey_ops *new_ops = bch2_bkey_type_ops(i->k->k.type);
if (old_ops->trigger == new_ops->trigger)
return bch2_key_trigger(trans, i->btree_id, i->level,
old, bkey_i_to_s(new),
BTREE_TRIGGER_insert|BTREE_TRIGGER_overwrite|flags);
} else {
ret = bch2_key_trigger_new(trans, i->btree_id, i->level,
else
return bch2_key_trigger_new(trans, i->btree_id, i->level,
bkey_i_to_s(new), flags) ?:
bch2_key_trigger_old(trans, i->btree_id, i->level,
bch2_key_trigger_old(trans, i->btree_id, i->level,
old, flags);
}
return ret;
}
static int run_one_trans_trigger(struct btree_trans *trans, struct btree_insert_entry *i,
bool overwrite)
{
verify_update_old_key(trans, i);
if ((i->flags & BTREE_TRIGGER_norun) ||
!btree_node_type_has_trans_triggers(i->bkey_type))
return 0;
/*
* Transactional triggers create new btree_insert_entries, so we can't
* pass them a pointer to a btree_insert_entry, that memory is going to
@ -495,12 +499,6 @@ static int run_one_trans_trigger(struct btree_trans *trans, struct btree_insert_
const struct bkey_ops *new_ops = bch2_bkey_type_ops(i->k->k.type);
unsigned flags = i->flags|BTREE_TRIGGER_transactional;
verify_update_old_key(trans, i);
if ((i->flags & BTREE_TRIGGER_norun) ||
!(BTREE_NODE_TYPE_HAS_TRANS_TRIGGERS & (1U << i->bkey_type)))
return 0;
if (!i->insert_trigger_run &&
!i->overwrite_trigger_run &&
old_ops->trigger == new_ops->trigger) {
@ -523,10 +521,8 @@ static int run_one_trans_trigger(struct btree_trans *trans, struct btree_insert_
static int run_btree_triggers(struct btree_trans *trans, enum btree_id btree_id,
unsigned btree_id_start)
{
bool trans_trigger_run;
int ret, overwrite;
for (overwrite = 1; overwrite >= 0; --overwrite) {
for (int overwrite = 1; overwrite >= 0; --overwrite) {
bool trans_trigger_run;
/*
* Running triggers will append more updates to the list of updates as
@ -541,7 +537,7 @@ static int run_btree_triggers(struct btree_trans *trans, enum btree_id btree_id,
if (trans->updates[i].btree_id != btree_id)
continue;
ret = run_one_trans_trigger(trans, trans->updates + i, overwrite);
int ret = run_one_trans_trigger(trans, trans->updates + i, overwrite);
if (ret < 0)
return ret;
if (ret)
@ -594,7 +590,7 @@ static int bch2_trans_commit_run_triggers(struct btree_trans *trans)
#ifdef CONFIG_BCACHEFS_DEBUG
trans_for_each_update(trans, i)
BUG_ON(!(i->flags & BTREE_TRIGGER_norun) &&
(BTREE_NODE_TYPE_HAS_TRANS_TRIGGERS & (1U << i->bkey_type)) &&
btree_node_type_has_trans_triggers(i->bkey_type) &&
(!i->insert_trigger_run || !i->overwrite_trigger_run));
#endif
return 0;
@ -602,24 +598,25 @@ static int bch2_trans_commit_run_triggers(struct btree_trans *trans)
static noinline int bch2_trans_commit_run_gc_triggers(struct btree_trans *trans)
{
trans_for_each_update(trans, i) {
/*
* XXX: synchronization of cached update triggers with gc
* XXX: synchronization of interior node updates with gc
*/
BUG_ON(i->cached || i->level);
if (btree_node_type_needs_gc(__btree_node_type(i->level, i->btree_id)) &&
gc_visited(trans->c, gc_pos_btree_node(insert_l(trans, i)->b))) {
trans_for_each_update(trans, i)
if (btree_node_type_has_triggers(i->bkey_type) &&
gc_visited(trans->c, gc_pos_btree(i->btree_id, i->level, i->k->k.p))) {
int ret = run_one_mem_trigger(trans, i, i->flags|BTREE_TRIGGER_gc);
if (ret)
return ret;
}
}
return 0;
}
static struct bversion journal_pos_to_bversion(struct journal_res *res, unsigned offset)
{
return (struct bversion) {
.hi = res->seq >> 32,
.lo = (res->seq << 32) | (res->offset + offset),
};
}
static inline int
bch2_trans_commit_write_locked(struct btree_trans *trans, unsigned flags,
struct btree_insert_entry **stopped_at,
@ -628,7 +625,7 @@ bch2_trans_commit_write_locked(struct btree_trans *trans, unsigned flags,
struct bch_fs *c = trans->c;
struct btree_trans_commit_hook *h;
unsigned u64s = 0;
int ret;
int ret = 0;
bch2_trans_verify_not_unlocked(trans);
bch2_trans_verify_not_in_restart(trans);
@ -693,23 +690,40 @@ bch2_trans_commit_write_locked(struct btree_trans *trans, unsigned flags,
i->k->k.version = MAX_VERSION;
}
if (trans->fs_usage_deltas &&
bch2_trans_fs_usage_apply(trans, trans->fs_usage_deltas))
return -BCH_ERR_btree_insert_need_mark_replicas;
/* XXX: we only want to run this if deltas are nonzero */
bch2_trans_account_disk_usage_change(trans);
h = trans->hooks;
while (h) {
ret = h->fn(trans, h);
if (ret)
goto revert_fs_usage;
return ret;
h = h->next;
}
struct jset_entry *entry = trans->journal_entries;
if (likely(!(flags & BCH_TRANS_COMMIT_skip_accounting_apply))) {
percpu_down_read(&c->mark_lock);
for (entry = trans->journal_entries;
entry != (void *) ((u64 *) trans->journal_entries + trans->journal_entries_u64s);
entry = vstruct_next(entry))
if (jset_entry_is_key(entry) && entry->start->k.type == KEY_TYPE_accounting) {
struct bkey_i_accounting *a = bkey_i_to_accounting(entry->start);
a->k.version = journal_pos_to_bversion(&trans->journal_res,
(u64 *) entry - (u64 *) trans->journal_entries);
BUG_ON(bversion_zero(a->k.version));
ret = bch2_accounting_mem_mod_locked(trans, accounting_i_to_s_c(a), false);
if (ret)
goto revert_fs_usage;
}
percpu_up_read(&c->mark_lock);
/* XXX: we only want to run this if deltas are nonzero */
bch2_trans_account_disk_usage_change(trans);
}
trans_for_each_update(trans, i)
if (BTREE_NODE_TYPE_HAS_ATOMIC_TRIGGERS & (1U << i->bkey_type)) {
if (btree_node_type_has_atomic_triggers(i->bkey_type)) {
ret = run_one_mem_trigger(trans, i, BTREE_TRIGGER_atomic|i->flags);
if (ret)
goto fatal_err;
@ -764,29 +778,44 @@ bch2_trans_commit_write_locked(struct btree_trans *trans, unsigned flags,
trans_for_each_update(trans, i) {
struct btree_path *path = trans->paths + i->path;
if (!i->cached) {
if (!i->cached)
bch2_btree_insert_key_leaf(trans, path, i->k, trans->journal_res.seq);
} else if (!i->key_cache_already_flushed)
else if (!i->key_cache_already_flushed)
bch2_btree_insert_key_cached(trans, flags, i);
else {
else
bch2_btree_key_cache_drop(trans, path);
btree_path_set_dirty(path, BTREE_ITER_NEED_TRAVERSE);
}
}
return 0;
fatal_err:
bch2_fatal_error(c);
bch2_fs_fatal_error(c, "fatal error in transaction commit: %s", bch2_err_str(ret));
percpu_down_read(&c->mark_lock);
revert_fs_usage:
if (trans->fs_usage_deltas)
bch2_trans_fs_usage_revert(trans, trans->fs_usage_deltas);
for (struct jset_entry *entry2 = trans->journal_entries;
entry2 != entry;
entry2 = vstruct_next(entry2))
if (jset_entry_is_key(entry2) && entry2->start->k.type == KEY_TYPE_accounting) {
struct bkey_s_accounting a = bkey_i_to_s_accounting(entry2->start);
bch2_accounting_neg(a);
bch2_accounting_mem_mod_locked(trans, a.c, false);
bch2_accounting_neg(a);
}
percpu_up_read(&c->mark_lock);
return ret;
}
static noinline void bch2_drop_overwrites_from_journal(struct btree_trans *trans)
{
/*
* Accounting keys aren't deduped in the journal: we have to compare
* each individual update against what's in the btree to see if it has
* been applied yet, and accounting updates also don't overwrite,
* they're deltas that accumulate.
*/
trans_for_each_update(trans, i)
bch2_journal_key_overwritten(trans->c, i->btree_id, i->level, i->k->k.p);
if (i->k->k.type != KEY_TYPE_accounting)
bch2_journal_key_overwritten(trans->c, i->btree_id, i->level, i->k->k.p);
}
static noinline int bch2_trans_commit_bkey_invalid(struct btree_trans *trans,
@ -922,7 +951,7 @@ int bch2_trans_commit_error(struct btree_trans *trans, unsigned flags,
break;
case -BCH_ERR_btree_insert_need_mark_replicas:
ret = drop_locks_do(trans,
bch2_replicas_delta_list_mark(c, trans->fs_usage_deltas));
bch2_accounting_update_sb(trans));
break;
case -BCH_ERR_journal_res_get_blocked:
/*
@ -993,15 +1022,24 @@ static noinline int
do_bch2_trans_commit_to_journal_replay(struct btree_trans *trans)
{
struct bch_fs *c = trans->c;
int ret = 0;
trans_for_each_update(trans, i) {
ret = bch2_journal_key_insert(c, i->btree_id, i->level, i->k);
int ret = bch2_journal_key_insert(c, i->btree_id, i->level, i->k);
if (ret)
break;
return ret;
}
return ret;
for (struct jset_entry *i = trans->journal_entries;
i != (void *) ((u64 *) trans->journal_entries + trans->journal_entries_u64s);
i = vstruct_next(i))
if (i->type == BCH_JSET_ENTRY_btree_keys ||
i->type == BCH_JSET_ENTRY_write_buffer_keys) {
int ret = bch2_journal_key_insert(c, i->btree_id, i->level, i->start);
if (ret)
return ret;
}
return 0;
}
int __bch2_trans_commit(struct btree_trans *trans, unsigned flags)
@ -1017,8 +1055,6 @@ int __bch2_trans_commit(struct btree_trans *trans, unsigned flags)
!trans->journal_entries_u64s)
goto out_reset;
memset(&trans->fs_usage_delta, 0, sizeof(trans->fs_usage_delta));
ret = bch2_trans_commit_run_triggers(trans);
if (ret)
goto out_reset;
@ -1115,6 +1151,7 @@ retry:
bch2_trans_verify_not_in_restart(trans);
if (likely(!(flags & BCH_TRANS_COMMIT_no_journal_res)))
memset(&trans->journal_res, 0, sizeof(trans->journal_res));
memset(&trans->fs_usage_delta, 0, sizeof(trans->fs_usage_delta));
ret = do_bch2_trans_commit(trans, flags, &errored_at, _RET_IP_);

21
fs/bcachefs/btree_types.h
View File

@ -388,7 +388,6 @@ struct bkey_cached {
unsigned long flags;
unsigned long btree_trans_barrier_seq;
u16 u64s;
bool valid;
struct bkey_cached_key key;
struct rhash_head hash;
@ -478,8 +477,8 @@ struct btree_trans {
btree_path_idx_t nr_sorted;
btree_path_idx_t nr_paths;
btree_path_idx_t nr_paths_max;
btree_path_idx_t nr_updates;
u8 fn_idx;
u8 nr_updates;
u8 lock_must_abort;
bool lock_may_not_fail:1;
bool srcu_held:1;
@ -523,8 +522,10 @@ struct btree_trans {
unsigned journal_u64s;
unsigned extra_disk_res; /* XXX kill */
struct replicas_delta_list *fs_usage_deltas;
#ifdef CONFIG_DEBUG_LOCK_ALLOC
struct lockdep_map dep_map;
#endif
/* Entries before this are zeroed out on every bch2_trans_get() call */
struct list_head list;
@ -755,9 +756,19 @@ const char *bch2_btree_node_type_str(enum btree_node_type);
(BTREE_NODE_TYPE_HAS_TRANS_TRIGGERS| \
BTREE_NODE_TYPE_HAS_ATOMIC_TRIGGERS)
static inline bool btree_node_type_needs_gc(enum btree_node_type type)
static inline bool btree_node_type_has_trans_triggers(enum btree_node_type type)
{
return BTREE_NODE_TYPE_HAS_TRIGGERS & BIT_ULL(type);
return BIT_ULL(type) & BTREE_NODE_TYPE_HAS_TRANS_TRIGGERS;
}
static inline bool btree_node_type_has_atomic_triggers(enum btree_node_type type)
{
return BIT_ULL(type) & BTREE_NODE_TYPE_HAS_ATOMIC_TRIGGERS;
}
static inline bool btree_node_type_has_triggers(enum btree_node_type type)
{
return BIT_ULL(type) & BTREE_NODE_TYPE_HAS_TRIGGERS;
}
static inline bool btree_node_type_is_extents(enum btree_node_type type)

6
fs/bcachefs/btree_update.c
View File

@ -656,14 +656,16 @@ int bch2_btree_insert_trans(struct btree_trans *trans, enum btree_id id,
* @disk_res: must be non-NULL whenever inserting or potentially
* splitting data extents
* @flags: transaction commit flags
* @iter_flags: btree iter update trigger flags
*
* Returns: 0 on success, error code on failure
*/
int bch2_btree_insert(struct bch_fs *c, enum btree_id id, struct bkey_i *k,
struct disk_reservation *disk_res, int flags)
struct disk_reservation *disk_res, int flags,
enum btree_iter_update_trigger_flags iter_flags)
{
return bch2_trans_do(c, disk_res, NULL, flags,
bch2_btree_insert_trans(trans, id, k, 0));
bch2_btree_insert_trans(trans, id, k, iter_flags));
}
int bch2_btree_delete_extent_at(struct btree_trans *trans, struct btree_iter *iter,

36
fs/bcachefs/btree_update.h
View File

@ -29,6 +29,7 @@ void bch2_btree_insert_key_leaf(struct btree_trans *, struct btree_path *,
"pin journal entry referred to by trans->journal_res.seq") \
x(journal_reclaim, "operation required for journal reclaim; may return error" \
"instead of deadlocking if BCH_WATERMARK_reclaim not specified")\
x(skip_accounting_apply, "we're in journal replay - accounting updates have already been applied")
enum __bch_trans_commit_flags {
/* First bits for bch_watermark: */
@ -56,8 +57,9 @@ int bch2_btree_insert_nonextent(struct btree_trans *, enum btree_id,
int bch2_btree_insert_trans(struct btree_trans *, enum btree_id, struct bkey_i *,
enum btree_iter_update_trigger_flags);
int bch2_btree_insert(struct bch_fs *, enum btree_id, struct bkey_i *,
struct disk_reservation *, int flags);
int bch2_btree_insert(struct bch_fs *, enum btree_id, struct bkey_i *, struct
disk_reservation *, int flags, enum
btree_iter_update_trigger_flags iter_flags);
int bch2_btree_delete_range_trans(struct btree_trans *, enum btree_id,
struct bpos, struct bpos, unsigned, u64 *);
@ -130,7 +132,19 @@ static inline int __must_check bch2_trans_update_buffered(struct btree_trans *tr
enum btree_id btree,
struct bkey_i *k)
{
if (unlikely(trans->journal_replay_not_finished))
/*
* Most updates skip the btree write buffer until journal replay is
* finished because synchronization with journal replay relies on having
* a btree node locked - if we're overwriting a key in the journal that
* journal replay hasn't yet replayed, we have to mark it as
* overwritten.
*
* But accounting updates don't overwrite, they're deltas, and they have
* to be flushed to the btree strictly in order for journal replay to be
* able to tell which updates need to be applied:
*/
if (k->k.type != KEY_TYPE_accounting &&
unlikely(trans->journal_replay_not_finished))
return bch2_btree_insert_clone_trans(trans, btree, k);
struct jset_entry *e = bch2_trans_jset_entry_alloc(trans, jset_u64s(k->k.u64s));
@ -178,14 +192,6 @@ static inline int bch2_trans_commit(struct btree_trans *trans,
nested_lockrestart_do(_trans, _do ?: bch2_trans_commit(_trans, (_disk_res),\
(_journal_seq), (_flags)))
#define bch2_trans_run(_c, _do) \
({ \
struct btree_trans *trans = bch2_trans_get(_c); \
int _ret = (_do); \
bch2_trans_put(trans); \
_ret; \
})
#define bch2_trans_do(_c, _disk_res, _journal_seq, _flags, _do) \
bch2_trans_run(_c, commit_do(trans, _disk_res, _journal_seq, _flags, _do))
@ -203,14 +209,6 @@ static inline void bch2_trans_reset_updates(struct btree_trans *trans)
trans->journal_entries_u64s = 0;
trans->hooks = NULL;
trans->extra_disk_res = 0;
if (trans->fs_usage_deltas) {
trans->fs_usage_deltas->used = 0;
memset((void *) trans->fs_usage_deltas +
offsetof(struct replicas_delta_list, memset_start), 0,
(void *) &trans->fs_usage_deltas->memset_end -
(void *) &trans->fs_usage_deltas->memset_start);
}
}
static inline struct bkey_i *__bch2_bkey_make_mut_noupdate(struct btree_trans *trans, struct bkey_s_c k,

42
fs/bcachefs/btree_update_interior.c
View File

@ -61,7 +61,7 @@ int bch2_btree_node_check_topology(struct btree_trans *trans, struct btree *b)
if (!bpos_eq(b->data->min_key, POS_MIN)) {
printbuf_reset(&buf);
bch2_bpos_to_text(&buf, b->data->min_key);
need_fsck_err(c, btree_root_bad_min_key,
need_fsck_err(trans, btree_root_bad_min_key,
"btree root with incorrect min_key: %s", buf.buf);
goto topology_repair;
}
@ -69,7 +69,7 @@ int bch2_btree_node_check_topology(struct btree_trans *trans, struct btree *b)
if (!bpos_eq(b->data->max_key, SPOS_MAX)) {
printbuf_reset(&buf);
bch2_bpos_to_text(&buf, b->data->max_key);
need_fsck_err(c, btree_root_bad_max_key,
need_fsck_err(trans, btree_root_bad_max_key,
"btree root with incorrect max_key: %s", buf.buf);
goto topology_repair;
}
@ -105,7 +105,7 @@ int bch2_btree_node_check_topology(struct btree_trans *trans, struct btree *b)
prt_str(&buf, "\n next ");
bch2_bkey_val_to_text(&buf, c, k);
need_fsck_err(c, btree_node_topology_bad_min_key, "%s", buf.buf);
need_fsck_err(trans, btree_node_topology_bad_min_key, "%s", buf.buf);
goto topology_repair;
}
@ -122,7 +122,7 @@ int bch2_btree_node_check_topology(struct btree_trans *trans, struct btree *b)
bch2_btree_id_str(b->c.btree_id), b->c.level);
bch2_bkey_val_to_text(&buf, c, bkey_i_to_s_c(&b->key));
need_fsck_err(c, btree_node_topology_empty_interior_node, "%s", buf.buf);
need_fsck_err(trans, btree_node_topology_empty_interior_node, "%s", buf.buf);
goto topology_repair;
} else if (!bpos_eq(prev.k->k.p, b->key.k.p)) {
bch2_topology_error(c);
@ -135,7 +135,7 @@ int bch2_btree_node_check_topology(struct btree_trans *trans, struct btree *b)
prt_str(&buf, "\n last key ");
bch2_bkey_val_to_text(&buf, c, bkey_i_to_s_c(prev.k));
need_fsck_err(c, btree_node_topology_bad_max_key, "%s", buf.buf);
need_fsck_err(trans, btree_node_topology_bad_max_key, "%s", buf.buf);
goto topology_repair;
}
out:
@ -1356,10 +1356,10 @@ static void bch2_insert_fixup_btree_ptr(struct btree_update *as,
struct bch_fs *c = as->c;
struct bkey_packed *k;
struct printbuf buf = PRINTBUF;
unsigned long old, new, v;
unsigned long old, new;
BUG_ON(insert->k.type == KEY_TYPE_btree_ptr_v2 &&
!btree_ptr_sectors_written(insert));
!btree_ptr_sectors_written(bkey_i_to_s_c(insert)));
if (unlikely(!test_bit(JOURNAL_replay_done, &c->journal.flags)))
bch2_journal_key_overwritten(c, b->c.btree_id, b->c.level, insert->k.p);
@ -1395,14 +1395,14 @@ static void bch2_insert_fixup_btree_ptr(struct btree_update *as,
bch2_btree_bset_insert_key(trans, path, b, node_iter, insert);
set_btree_node_dirty_acct(c, b);
v = READ_ONCE(b->flags);
old = READ_ONCE(b->flags);
do {
old = new = v;
new = old;
new &= ~BTREE_WRITE_TYPE_MASK;
new |= BTREE_WRITE_interior;
new |= 1 << BTREE_NODE_need_write;
} while ((v = cmpxchg(&b->flags, old, new)) != old);
} while (!try_cmpxchg(&b->flags, &old, new));
printbuf_exit(&buf);
}
@ -2647,6 +2647,28 @@ bch2_btree_roots_to_journal_entries(struct bch_fs *c,
return end;
}
static void bch2_btree_alloc_to_text(struct printbuf *out,
struct bch_fs *c,
struct btree_alloc *a)
{
printbuf_indent_add(out, 2);
bch2_bkey_val_to_text(out, c, bkey_i_to_s_c(&a->k));
prt_newline(out);
struct open_bucket *ob;
unsigned i;
open_bucket_for_each(c, &a->ob, ob, i)
bch2_open_bucket_to_text(out, c, ob);
printbuf_indent_sub(out, 2);
}
void bch2_btree_reserve_cache_to_text(struct printbuf *out, struct bch_fs *c)
{
for (unsigned i = 0; i < c->btree_reserve_cache_nr; i++)
bch2_btree_alloc_to_text(out, c, &c->btree_reserve_cache[i]);
}
void bch2_fs_btree_interior_update_exit(struct bch_fs *c)
{
if (c->btree_node_rewrite_worker)

2
fs/bcachefs/btree_update_interior.h
View File

@ -335,6 +335,8 @@ struct jset_entry *bch2_btree_roots_to_journal_entries(struct bch_fs *,
void bch2_do_pending_node_rewrites(struct bch_fs *);
void bch2_free_pending_node_rewrites(struct bch_fs *);
void bch2_btree_reserve_cache_to_text(struct printbuf *, struct bch_fs *);
void bch2_fs_btree_interior_update_exit(struct bch_fs *);
void bch2_fs_btree_interior_update_init_early(struct bch_fs *);
int bch2_fs_btree_interior_update_init(struct bch_fs *);

140
fs/bcachefs/btree_write_buffer.c
View File

@ -6,6 +6,7 @@
#include "btree_update.h"
#include "btree_update_interior.h"
#include "btree_write_buffer.h"
#include "disk_accounting.h"
#include "error.h"
#include "extents.h"
#include "journal.h"
@ -134,7 +135,9 @@ static noinline int wb_flush_one_slowpath(struct btree_trans *trans,
static inline int wb_flush_one(struct btree_trans *trans, struct btree_iter *iter,
struct btree_write_buffered_key *wb,
bool *write_locked, size_t *fast)
bool *write_locked,
bool *accounting_accumulated,
size_t *fast)
{
struct btree_path *path;
int ret;
@ -147,6 +150,16 @@ static inline int wb_flush_one(struct btree_trans *trans, struct btree_iter *ite
if (ret)
return ret;
if (!*accounting_accumulated && wb->k.k.type == KEY_TYPE_accounting) {
struct bkey u;
struct bkey_s_c k = bch2_btree_path_peek_slot_exact(btree_iter_path(trans, iter), &u);
if (k.k->type == KEY_TYPE_accounting)
bch2_accounting_accumulate(bkey_i_to_accounting(&wb->k),
bkey_s_c_to_accounting(k));
}
*accounting_accumulated = true;
/*
* We can't clone a path that has write locks: unshare it now, before
* set_pos and traverse():
@ -259,8 +272,9 @@ static int bch2_btree_write_buffer_flush_locked(struct btree_trans *trans)
struct journal *j = &c->journal;
struct btree_write_buffer *wb = &c->btree_write_buffer;
struct btree_iter iter = { NULL };
size_t skipped = 0, fast = 0, slowpath = 0;
size_t overwritten = 0, fast = 0, slowpath = 0, could_not_insert = 0;
bool write_locked = false;
bool accounting_replay_done = test_bit(BCH_FS_accounting_replay_done, &c->flags);
int ret = 0;
bch2_trans_unlock(trans);
@ -301,11 +315,22 @@ static int bch2_btree_write_buffer_flush_locked(struct btree_trans *trans)
BUG_ON(!k->journal_seq);
if (!accounting_replay_done &&
k->k.k.type == KEY_TYPE_accounting) {
slowpath++;
continue;
}
if (i + 1 < &darray_top(wb->sorted) &&
wb_key_eq(i, i + 1)) {
struct btree_write_buffered_key *n = &wb->flushing.keys.data[i[1].idx];
skipped++;
if (k->k.k.type == KEY_TYPE_accounting &&
n->k.k.type == KEY_TYPE_accounting)
bch2_accounting_accumulate(bkey_i_to_accounting(&n->k),
bkey_i_to_s_c_accounting(&k->k));
overwritten++;
n->journal_seq = min_t(u64, n->journal_seq, k->journal_seq);
k->journal_seq = 0;
continue;
@ -340,13 +365,15 @@ static int bch2_btree_write_buffer_flush_locked(struct btree_trans *trans)
bch2_btree_iter_set_pos(&iter, k->k.k.p);
btree_iter_path(trans, &iter)->preserve = false;
bool accounting_accumulated = false;
do {
if (race_fault()) {
ret = -BCH_ERR_journal_reclaim_would_deadlock;
break;
}
ret = wb_flush_one(trans, &iter, k, &write_locked, &fast);
ret = wb_flush_one(trans, &iter, k, &write_locked,
&accounting_accumulated, &fast);
if (!write_locked)
bch2_trans_begin(trans);
} while (bch2_err_matches(ret, BCH_ERR_transaction_restart));
@ -387,8 +414,15 @@ static int bch2_btree_write_buffer_flush_locked(struct btree_trans *trans)
if (!i->journal_seq)
continue;
bch2_journal_pin_update(j, i->journal_seq, &wb->flushing.pin,
bch2_btree_write_buffer_journal_flush);
if (!accounting_replay_done &&
i->k.k.type == KEY_TYPE_accounting) {
could_not_insert++;
continue;
}
if (!could_not_insert)
bch2_journal_pin_update(j, i->journal_seq, &wb->flushing.pin,
bch2_btree_write_buffer_journal_flush);
bch2_trans_begin(trans);
@ -401,13 +435,45 @@ static int bch2_btree_write_buffer_flush_locked(struct btree_trans *trans)
btree_write_buffered_insert(trans, i));
if (ret)
goto err;
i->journal_seq = 0;
}
/*
* If journal replay hasn't finished with accounting keys we
* can't flush accounting keys at all - condense them and leave
* them for next time.
*
* Q: Can the write buffer overflow?
* A Shouldn't be any actual risk. It's just new accounting
* updates that the write buffer can't flush, and those are only
* going to be generated by interior btree node updates as
* journal replay has to split/rewrite nodes to make room for
* its updates.
*
* And for those new acounting updates, updates to the same
* counters get accumulated as they're flushed from the journal
* to the write buffer - see the patch for eytzingcer tree
* accumulated. So we could only overflow if the number of
* distinct counters touched somehow was very large.
*/
if (could_not_insert) {
struct btree_write_buffered_key *dst = wb->flushing.keys.data;
darray_for_each(wb->flushing.keys, i)
if (i->journal_seq)
*dst++ = *i;
wb->flushing.keys.nr = dst - wb->flushing.keys.data;
}
}
err:
if (ret || !could_not_insert) {
bch2_journal_pin_drop(j, &wb->flushing.pin);
wb->flushing.keys.nr = 0;
}
bch2_fs_fatal_err_on(ret, c, "%s", bch2_err_str(ret));
trace_write_buffer_flush(trans, wb->flushing.keys.nr, skipped, fast, 0);
bch2_journal_pin_drop(j, &wb->flushing.pin);
wb->flushing.keys.nr = 0;
trace_write_buffer_flush(trans, wb->flushing.keys.nr, overwritten, fast, 0);
return ret;
}
@ -494,7 +560,7 @@ int bch2_btree_write_buffer_tryflush(struct btree_trans *trans)
return ret;
}
/**
/*
* In check and repair code, when checking references to write buffer btrees we
* need to issue a flush before we have a definitive error: this issues a flush
* if this is a key we haven't yet checked.
@ -544,6 +610,29 @@ static void bch2_btree_write_buffer_flush_work(struct work_struct *work)
bch2_write_ref_put(c, BCH_WRITE_REF_btree_write_buffer);
}
static void wb_accounting_sort(struct btree_write_buffer *wb)
{
eytzinger0_sort(wb->accounting.data, wb->accounting.nr,
sizeof(wb->accounting.data[0]),
wb_key_cmp, NULL);
}
int bch2_accounting_key_to_wb_slowpath(struct bch_fs *c, enum btree_id btree,
struct bkey_i_accounting *k)
{
struct btree_write_buffer *wb = &c->btree_write_buffer;
struct btree_write_buffered_key new = { .btree = btree };
bkey_copy(&new.k, &k->k_i);
int ret = darray_push(&wb->accounting, new);
if (ret)
return ret;
wb_accounting_sort(wb);
return 0;
}
int bch2_journal_key_to_wb_slowpath(struct bch_fs *c,
struct journal_keys_to_wb *dst,
enum btree_id btree, struct bkey_i *k)
@ -613,11 +702,35 @@ void bch2_journal_keys_to_write_buffer_start(struct bch_fs *c, struct journal_ke
bch2_journal_pin_add(&c->journal, seq, &dst->wb->pin,
bch2_btree_write_buffer_journal_flush);
darray_for_each(wb->accounting, i)
memset(&i->k.v, 0, bkey_val_bytes(&i->k.k));
}
void bch2_journal_keys_to_write_buffer_end(struct bch_fs *c, struct journal_keys_to_wb *dst)
int bch2_journal_keys_to_write_buffer_end(struct bch_fs *c, struct journal_keys_to_wb *dst)
{
struct btree_write_buffer *wb = &c->btree_write_buffer;
unsigned live_accounting_keys = 0;
int ret = 0;
darray_for_each(wb->accounting, i)
if (!bch2_accounting_key_is_zero(bkey_i_to_s_c_accounting(&i->k))) {
i->journal_seq = dst->seq;
live_accounting_keys++;
ret = __bch2_journal_key_to_wb(c, dst, i->btree, &i->k);
if (ret)
break;
}
if (live_accounting_keys * 2 < wb->accounting.nr) {
struct btree_write_buffered_key *dst = wb->accounting.data;
darray_for_each(wb->accounting, src)
if (!bch2_accounting_key_is_zero(bkey_i_to_s_c_accounting(&src->k)))
*dst++ = *src;
wb->accounting.nr = dst - wb->accounting.data;
wb_accounting_sort(wb);
}
if (!dst->wb->keys.nr)
bch2_journal_pin_drop(&c->journal, &dst->wb->pin);
@ -630,6 +743,8 @@ void bch2_journal_keys_to_write_buffer_end(struct bch_fs *c, struct journal_keys
if (dst->wb == &wb->flushing)
mutex_unlock(&wb->flushing.lock);
mutex_unlock(&wb->inc.lock);
return ret;
}
static int bch2_journal_keys_to_write_buffer(struct bch_fs *c, struct journal_buf *buf)
@ -653,7 +768,7 @@ static int bch2_journal_keys_to_write_buffer(struct bch_fs *c, struct journal_bu
buf->need_flush_to_write_buffer = false;
spin_unlock(&c->journal.lock);
out:
bch2_journal_keys_to_write_buffer_end(c, &dst);
ret = bch2_journal_keys_to_write_buffer_end(c, &dst) ?: ret;
return ret;
}
@ -685,6 +800,7 @@ void bch2_fs_btree_write_buffer_exit(struct bch_fs *c)
BUG_ON((wb->inc.keys.nr || wb->flushing.keys.nr) &&
!bch2_journal_error(&c->journal));
darray_exit(&wb->accounting);
darray_exit(&wb->sorted);
darray_exit(&wb->flushing.keys);
darray_exit(&wb->inc.keys);

49
fs/bcachefs/btree_write_buffer.h
View File

@ -3,6 +3,7 @@
#define _BCACHEFS_BTREE_WRITE_BUFFER_H
#include "bkey.h"
#include "disk_accounting.h"
static inline bool bch2_btree_write_buffer_should_flush(struct bch_fs *c)
{
@ -32,16 +33,45 @@ struct journal_keys_to_wb {
u64 seq;
};
static inline int wb_key_cmp(const void *_l, const void *_r)
{
const struct btree_write_buffered_key *l = _l;
const struct btree_write_buffered_key *r = _r;
return cmp_int(l->btree, r->btree) ?: bpos_cmp(l->k.k.p, r->k.k.p);
}
int bch2_accounting_key_to_wb_slowpath(struct bch_fs *,
enum btree_id, struct bkey_i_accounting *);
static inline int bch2_accounting_key_to_wb(struct bch_fs *c,
enum btree_id btree, struct bkey_i_accounting *k)
{
struct btree_write_buffer *wb = &c->btree_write_buffer;
struct btree_write_buffered_key search;
search.btree = btree;
search.k.k.p = k->k.p;
unsigned idx = eytzinger0_find(wb->accounting.data, wb->accounting.nr,
sizeof(wb->accounting.data[0]),
wb_key_cmp, &search);
if (idx >= wb->accounting.nr)
return bch2_accounting_key_to_wb_slowpath(c, btree, k);
struct bkey_i_accounting *dst = bkey_i_to_accounting(&wb->accounting.data[idx].k);
bch2_accounting_accumulate(dst, accounting_i_to_s_c(k));
return 0;
}
int bch2_journal_key_to_wb_slowpath(struct bch_fs *,
struct journal_keys_to_wb *,
enum btree_id, struct bkey_i *);
static inline int bch2_journal_key_to_wb(struct bch_fs *c,
static inline int __bch2_journal_key_to_wb(struct bch_fs *c,
struct journal_keys_to_wb *dst,
enum btree_id btree, struct bkey_i *k)
{
EBUG_ON(!dst->seq);
if (unlikely(!dst->room))
return bch2_journal_key_to_wb_slowpath(c, dst, btree, k);
@ -54,8 +84,19 @@ static inline int bch2_journal_key_to_wb(struct bch_fs *c,
return 0;
}
static inline int bch2_journal_key_to_wb(struct bch_fs *c,
struct journal_keys_to_wb *dst,
enum btree_id btree, struct bkey_i *k)
{
EBUG_ON(!dst->seq);
return k->k.type == KEY_TYPE_accounting
? bch2_accounting_key_to_wb(c, btree, bkey_i_to_accounting(k))
: __bch2_journal_key_to_wb(c, dst, btree, k);
}
void bch2_journal_keys_to_write_buffer_start(struct bch_fs *, struct journal_keys_to_wb *, u64);
void bch2_journal_keys_to_write_buffer_end(struct bch_fs *, struct journal_keys_to_wb *);
int bch2_journal_keys_to_write_buffer_end(struct bch_fs *, struct journal_keys_to_wb *);
int bch2_btree_write_buffer_resize(struct bch_fs *, size_t);
void bch2_fs_btree_write_buffer_exit(struct bch_fs *);

2
fs/bcachefs/btree_write_buffer_types.h
View File

@ -52,6 +52,8 @@ struct btree_write_buffer {
struct btree_write_buffer_keys inc;
struct btree_write_buffer_keys flushing;
struct work_struct flush_work;
DARRAY(struct btree_write_buffered_key) accounting;
};
#endif /* _BCACHEFS_BTREE_WRITE_BUFFER_TYPES_H */

764
fs/bcachefs/buckets.c
View File

File diff suppressed because it is too large Load Diff

71
fs/bcachefs/buckets.h
View File

@ -85,7 +85,7 @@ static inline struct bucket_array *gc_bucket_array(struct bch_dev *ca)
return rcu_dereference_check(ca->buckets_gc,
!ca->fs ||
percpu_rwsem_is_held(&ca->fs->mark_lock) ||
lockdep_is_held(&ca->fs->gc_lock) ||
lockdep_is_held(&ca->fs->state_lock) ||
lockdep_is_held(&ca->bucket_lock));
}
@ -103,7 +103,7 @@ static inline struct bucket_gens *bucket_gens(struct bch_dev *ca)
return rcu_dereference_check(ca->bucket_gens,
!ca->fs ||
percpu_rwsem_is_held(&ca->fs->mark_lock) ||
lockdep_is_held(&ca->fs->gc_lock) ||
lockdep_is_held(&ca->fs->state_lock) ||
lockdep_is_held(&ca->bucket_lock));
}
@ -212,7 +212,6 @@ static inline struct bch_dev_usage bch2_dev_usage_read(struct bch_dev *ca)
return ret;
}
void bch2_dev_usage_init(struct bch_dev *);
void bch2_dev_usage_to_text(struct printbuf *, struct bch_dev_usage *);
static inline u64 bch2_dev_buckets_reserved(struct bch_dev *ca, enum bch_watermark watermark)
@ -274,73 +273,14 @@ static inline u64 dev_buckets_available(struct bch_dev *ca,
/* Filesystem usage: */
static inline unsigned __fs_usage_u64s(unsigned nr_replicas)
{
return sizeof(struct bch_fs_usage) / sizeof(u64) + nr_replicas;
}
static inline unsigned fs_usage_u64s(struct bch_fs *c)
{
return __fs_usage_u64s(READ_ONCE(c->replicas.nr));
}
static inline unsigned __fs_usage_online_u64s(unsigned nr_replicas)
{
return sizeof(struct bch_fs_usage_online) / sizeof(u64) + nr_replicas;
}
static inline unsigned fs_usage_online_u64s(struct bch_fs *c)
{
return __fs_usage_online_u64s(READ_ONCE(c->replicas.nr));
}
static inline unsigned dev_usage_u64s(void)
{
return sizeof(struct bch_dev_usage) / sizeof(u64);
}
u64 bch2_fs_usage_read_one(struct bch_fs *, u64 *);
struct bch_fs_usage_online *bch2_fs_usage_read(struct bch_fs *);
void bch2_fs_usage_acc_to_base(struct bch_fs *, unsigned);
void bch2_fs_usage_to_text(struct printbuf *,
struct bch_fs *, struct bch_fs_usage_online *);
u64 bch2_fs_sectors_used(struct bch_fs *, struct bch_fs_usage_online *);
struct bch_fs_usage_short
bch2_fs_usage_read_short(struct bch_fs *);
void bch2_dev_usage_update(struct bch_fs *, struct bch_dev *,
const struct bch_alloc_v4 *,
const struct bch_alloc_v4 *, u64, bool);
/* key/bucket marking: */
static inline struct bch_fs_usage *fs_usage_ptr(struct bch_fs *c,
unsigned journal_seq,
bool gc)
{
percpu_rwsem_assert_held(&c->mark_lock);
BUG_ON(!gc && !journal_seq);
return this_cpu_ptr(gc
? c->usage_gc
: c->usage[journal_seq & JOURNAL_BUF_MASK]);
}
int bch2_update_replicas(struct bch_fs *, struct bkey_s_c,
struct bch_replicas_entry_v1 *, s64,
unsigned, bool);
int bch2_update_replicas_list(struct btree_trans *,
struct bch_replicas_entry_v1 *, s64);
int bch2_update_cached_sectors_list(struct btree_trans *, unsigned, s64);
int bch2_replicas_deltas_realloc(struct btree_trans *, unsigned);
void bch2_fs_usage_initialize(struct bch_fs *);
int bch2_bucket_ref_update(struct btree_trans *, struct bch_dev *,
struct bkey_s_c, const struct bch_extent_ptr *,
s64, enum bch_data_type, u8, u8, u32 *);
@ -369,9 +309,6 @@ int bch2_trigger_reservation(struct btree_trans *, enum btree_id, unsigned,
void bch2_trans_account_disk_usage_change(struct btree_trans *);
void bch2_trans_fs_usage_revert(struct btree_trans *, struct replicas_delta_list *);
int bch2_trans_fs_usage_apply(struct btree_trans *, struct replicas_delta_list *);
int bch2_trans_mark_metadata_bucket(struct btree_trans *, struct bch_dev *, u64,
enum bch_data_type, unsigned,
enum btree_iter_update_trigger_flags);
@ -432,13 +369,13 @@ static inline int bch2_disk_reservation_add(struct bch_fs *c, struct disk_reserv
#ifdef __KERNEL__
u64 old, new;
old = this_cpu_read(c->pcpu->sectors_available);
do {
old = this_cpu_read(c->pcpu->sectors_available);
if (sectors > old)
return __bch2_disk_reservation_add(c, res, sectors, flags);
new = old - sectors;
} while (this_cpu_cmpxchg(c->pcpu->sectors_available, old, new) != old);
} while (!this_cpu_try_cmpxchg(c->pcpu->sectors_available, &old, new));
this_cpu_add(*c->online_reserved, sectors);
res->sectors += sectors;

17
fs/bcachefs/buckets_types.h
View File

@ -16,7 +16,8 @@ struct bucket {
u32 stripe;
u32 dirty_sectors;
u32 cached_sectors;
};
u32 stripe_sectors;
} __aligned(sizeof(long));
struct bucket_array {
struct rcu_head rcu;
@ -35,7 +36,7 @@ struct bucket_gens {
};
struct bch_dev_usage {
struct {
struct bch_dev_usage_type {
u64 buckets;
u64 sectors; /* _compressed_ sectors: */
/*
@ -56,18 +57,6 @@ struct bch_fs_usage_base {
u64 nr_inodes;
};
struct bch_fs_usage {
/* all fields are in units of 512 byte sectors: */
struct bch_fs_usage_base b;
u64 persistent_reserved[BCH_REPLICAS_MAX];
u64 replicas[];
};
struct bch_fs_usage_online {
u64 online_reserved;
struct bch_fs_usage u;
};
struct bch_fs_usage_short {
u64 capacity;
u64 used;

119
fs/bcachefs/chardev.c
View File

@ -5,6 +5,7 @@
#include "bcachefs_ioctl.h"
#include "buckets.h"
#include "chardev.h"
#include "disk_accounting.h"
#include "journal.h"
#include "move.h"
#include "recovery_passes.h"
@ -213,9 +214,8 @@ static long bch2_ioctl_fsck_offline(struct bch_ioctl_fsck_offline __user *user_a
if (arg.opts) {
char *optstr = strndup_user((char __user *)(unsigned long) arg.opts, 1 << 16);
ret = PTR_ERR_OR_ZERO(optstr) ?:
bch2_parse_mount_opts(NULL, &thr->opts, optstr);
bch2_parse_mount_opts(NULL, &thr->opts, NULL, optstr);
if (!IS_ERR(optstr))
kfree(optstr);
@ -224,6 +224,7 @@ static long bch2_ioctl_fsck_offline(struct bch_ioctl_fsck_offline __user *user_a
}
opt_set(thr->opts, stdio, (u64)(unsigned long)&thr->thr.stdio);
opt_set(thr->opts, read_only, 1);
/* We need request_key() to be called before we punt to kthread: */
opt_set(thr->opts, nostart, true);
@ -503,11 +504,9 @@ static long bch2_ioctl_data(struct bch_fs *c,
static long bch2_ioctl_fs_usage(struct bch_fs *c,
struct bch_ioctl_fs_usage __user *user_arg)
{
struct bch_ioctl_fs_usage *arg = NULL;
struct bch_replicas_usage *dst_e, *dst_end;
struct bch_fs_usage_online *src;
struct bch_ioctl_fs_usage arg = {};
darray_char replicas = {};
u32 replica_entries_bytes;
unsigned i;
int ret = 0;
if (!test_bit(BCH_FS_started, &c->flags))
@ -516,62 +515,60 @@ static long bch2_ioctl_fs_usage(struct bch_fs *c,
if (get_user(replica_entries_bytes, &user_arg->replica_entries_bytes))
return -EFAULT;
arg = kzalloc(size_add(sizeof(*arg), replica_entries_bytes), GFP_KERNEL);
if (!arg)
return -ENOMEM;
src = bch2_fs_usage_read(c);
if (!src) {
ret = -ENOMEM;
goto err;
}
arg->capacity = c->capacity;
arg->used = bch2_fs_sectors_used(c, src);
arg->online_reserved = src->online_reserved;
for (i = 0; i < BCH_REPLICAS_MAX; i++)
arg->persistent_reserved[i] = src->u.persistent_reserved[i];
dst_e = arg->replicas;
dst_end = (void *) arg->replicas + replica_entries_bytes;
for (i = 0; i < c->replicas.nr; i++) {
struct bch_replicas_entry_v1 *src_e =
cpu_replicas_entry(&c->replicas, i);
/* check that we have enough space for one replicas entry */
if (dst_e + 1 > dst_end) {
ret = -ERANGE;
break;
}
dst_e->sectors = src->u.replicas[i];
dst_e->r = *src_e;
/* recheck after setting nr_devs: */
if (replicas_usage_next(dst_e) > dst_end) {
ret = -ERANGE;
break;
}
memcpy(dst_e->r.devs, src_e->devs, src_e->nr_devs);
dst_e = replicas_usage_next(dst_e);
}
arg->replica_entries_bytes = (void *) dst_e - (void *) arg->replicas;
percpu_up_read(&c->mark_lock);
kfree(src);
ret = bch2_fs_replicas_usage_read(c, &replicas) ?:
(replica_entries_bytes < replicas.nr ? -ERANGE : 0) ?:
copy_to_user_errcode(&user_arg->replicas, replicas.data, replicas.nr);
if (ret)
goto err;
ret = copy_to_user_errcode(user_arg, arg,
sizeof(*arg) + arg->replica_entries_bytes);
struct bch_fs_usage_short u = bch2_fs_usage_read_short(c);
arg.capacity = c->capacity;
arg.used = u.used;
arg.online_reserved = percpu_u64_get(c->online_reserved);
arg.replica_entries_bytes = replicas.nr;
for (unsigned i = 0; i < BCH_REPLICAS_MAX; i++) {
struct disk_accounting_pos k = {
.type = BCH_DISK_ACCOUNTING_persistent_reserved,
.persistent_reserved.nr_replicas = i,
};
bch2_accounting_mem_read(c,
disk_accounting_pos_to_bpos(&k),
&arg.persistent_reserved[i], 1);
}
ret = copy_to_user_errcode(user_arg, &arg, sizeof(arg));
err:
kfree(arg);
darray_exit(&replicas);
return ret;
}
static long bch2_ioctl_query_accounting(struct bch_fs *c,
struct bch_ioctl_query_accounting __user *user_arg)
{
struct bch_ioctl_query_accounting arg;
darray_char accounting = {};
int ret = 0;
if (!test_bit(BCH_FS_started, &c->flags))
return -EINVAL;
ret = copy_from_user_errcode(&arg, user_arg, sizeof(arg)) ?:
bch2_fs_accounting_read(c, &accounting, arg.accounting_types_mask) ?:
(arg.accounting_u64s * sizeof(u64) < accounting.nr ? -ERANGE : 0) ?:
copy_to_user_errcode(&user_arg->accounting, accounting.data, accounting.nr);
if (ret)
goto err;
arg.capacity = c->capacity;
arg.used = bch2_fs_usage_read_short(c).used;
arg.online_reserved = percpu_u64_get(c->online_reserved);
arg.accounting_u64s = accounting.nr / sizeof(u64);
ret = copy_to_user_errcode(user_arg, &arg, sizeof(arg));
err:
darray_exit(&accounting);
return ret;
}
@ -606,7 +603,7 @@ static long bch2_ioctl_dev_usage(struct bch_fs *c,
arg.bucket_size = ca->mi.bucket_size;
arg.nr_buckets = ca->mi.nbuckets - ca->mi.first_bucket;
for (i = 0; i < BCH_DATA_NR; i++) {
for (i = 0; i < ARRAY_SIZE(arg.d); i++) {
arg.d[i].buckets = src.d[i].buckets;
arg.d[i].sectors = src.d[i].sectors;
arg.d[i].fragmented = src.d[i].fragmented;
@ -851,7 +848,7 @@ static long bch2_ioctl_fsck_online(struct bch_fs *c,
char *optstr = strndup_user((char __user *)(unsigned long) arg.opts, 1 << 16);
ret = PTR_ERR_OR_ZERO(optstr) ?:
bch2_parse_mount_opts(c, &thr->opts, optstr);
bch2_parse_mount_opts(c, &thr->opts, NULL, optstr);
if (!IS_ERR(optstr))
kfree(optstr);
@ -928,6 +925,8 @@ long bch2_fs_ioctl(struct bch_fs *c, unsigned cmd, void __user *arg)
BCH_IOCTL(disk_resize_journal, struct bch_ioctl_disk_resize_journal);
case BCH_IOCTL_FSCK_ONLINE:
BCH_IOCTL(fsck_online, struct bch_ioctl_fsck_online);
case BCH_IOCTL_QUERY_ACCOUNTING:
return bch2_ioctl_query_accounting(c, arg);
default:
return -ENOTTY;
}

5
fs/bcachefs/checksum.c
View File

@ -10,6 +10,7 @@
#include <linux/xxhash.h>
#include <linux/key.h>
#include <linux/random.h>
#include <linux/ratelimit.h>
#include <linux/scatterlist.h>
#include <crypto/algapi.h>
#include <crypto/chacha.h>
@ -436,7 +437,7 @@ int bch2_rechecksum_bio(struct bch_fs *c, struct bio *bio,
if (bch2_crc_cmp(merged, crc_old.csum) && !c->opts.no_data_io) {
struct printbuf buf = PRINTBUF;
prt_printf(&buf, "checksum error in %s() (memory corruption or bug?)\n"
"expected %0llx:%0llx got %0llx:%0llx (old type ",
" expected %0llx:%0llx got %0llx:%0llx (old type ",
__func__,
crc_old.csum.hi,
crc_old.csum.lo,
@ -446,7 +447,7 @@ int bch2_rechecksum_bio(struct bch_fs *c, struct bio *bio,
prt_str(&buf, " new type ");
bch2_prt_csum_type(&buf, new_csum_type);
prt_str(&buf, ")");
bch_err(c, "%s", buf.buf);
WARN_RATELIMIT(1, "%s", buf.buf);
printbuf_exit(&buf);
return -EIO;
}

65
fs/bcachefs/clock.c
View File

@ -15,18 +15,15 @@ static inline long io_timer_cmp(io_timer_heap *h,
void bch2_io_timer_add(struct io_clock *clock, struct io_timer *timer)
{
size_t i;
spin_lock(&clock->timer_lock);
if (time_after_eq((unsigned long) atomic64_read(&clock->now),
timer->expire)) {
if (time_after_eq64((u64) atomic64_read(&clock->now), timer->expire)) {
spin_unlock(&clock->timer_lock);
timer->fn(timer);
return;
}
for (i = 0; i < clock->timers.used; i++)
for (size_t i = 0; i < clock->timers.used; i++)
if (clock->timers.data[i] == timer)
goto out;
@ -37,11 +34,9 @@ out:
void bch2_io_timer_del(struct io_clock *clock, struct io_timer *timer)
{
size_t i;
spin_lock(&clock->timer_lock);
for (i = 0; i < clock->timers.used; i++)
for (size_t i = 0; i < clock->timers.used; i++)
if (clock->timers.data[i] == timer) {
heap_del(&clock->timers, i, io_timer_cmp, NULL);
break;
@ -75,33 +70,31 @@ static void io_clock_cpu_timeout(struct timer_list *timer)
wake_up_process(wait->task);
}
void bch2_io_clock_schedule_timeout(struct io_clock *clock, unsigned long until)
void bch2_io_clock_schedule_timeout(struct io_clock *clock, u64 until)
{
struct io_clock_wait wait;
struct io_clock_wait wait = {
.io_timer.expire = until,
.io_timer.fn = io_clock_wait_fn,
.io_timer.fn2 = (void *) _RET_IP_,
.task = current,
};
/* XXX: calculate sleep time rigorously */
wait.io_timer.expire = until;
wait.io_timer.fn = io_clock_wait_fn;
wait.task = current;
wait.expired = 0;
bch2_io_timer_add(clock, &wait.io_timer);
schedule();
bch2_io_timer_del(clock, &wait.io_timer);
}
void bch2_kthread_io_clock_wait(struct io_clock *clock,
unsigned long io_until,
unsigned long cpu_timeout)
u64 io_until, unsigned long cpu_timeout)
{
bool kthread = (current->flags & PF_KTHREAD) != 0;
struct io_clock_wait wait;
struct io_clock_wait wait = {
.io_timer.expire = io_until,
.io_timer.fn = io_clock_wait_fn,
.io_timer.fn2 = (void *) _RET_IP_,
.task = current,
};
wait.io_timer.expire = io_until;
wait.io_timer.fn = io_clock_wait_fn;
wait.task = current;
wait.expired = 0;
bch2_io_timer_add(clock, &wait.io_timer);
timer_setup_on_stack(&wait.cpu_timer, io_clock_cpu_timeout, 0);
@ -127,21 +120,20 @@ void bch2_kthread_io_clock_wait(struct io_clock *clock,
bch2_io_timer_del(clock, &wait.io_timer);
}
static struct io_timer *get_expired_timer(struct io_clock *clock,
unsigned long now)
static struct io_timer *get_expired_timer(struct io_clock *clock, u64 now)
{
struct io_timer *ret = NULL;
if (clock->timers.used &&
time_after_eq(now, clock->timers.data[0]->expire))
time_after_eq64(now, clock->timers.data[0]->expire))
heap_pop(&clock->timers, ret, io_timer_cmp, NULL);
return ret;
}
void __bch2_increment_clock(struct io_clock *clock, unsigned sectors)
void __bch2_increment_clock(struct io_clock *clock, u64 sectors)
{
struct io_timer *timer;
unsigned long now = atomic64_add_return(sectors, &clock->now);
u64 now = atomic64_add_return(sectors, &clock->now);
spin_lock(&clock->timer_lock);
while ((timer = get_expired_timer(clock, now)))
@ -151,17 +143,18 @@ void __bch2_increment_clock(struct io_clock *clock, unsigned sectors)
void bch2_io_timers_to_text(struct printbuf *out, struct io_clock *clock)
{
unsigned long now;
unsigned i;
out->atomic++;
spin_lock(&clock->timer_lock);
now = atomic64_read(&clock->now);
u64 now = atomic64_read(&clock->now);
for (i = 0; i < clock->timers.used; i++)
prt_printf(out, "%ps:\t%li\n",
printbuf_tabstop_push(out, 40);
prt_printf(out, "current time:\t%llu\n", now);
for (unsigned i = 0; i < clock->timers.used; i++)
prt_printf(out, "%ps %ps:\t%llu\n",
clock->timers.data[i]->fn,
clock->timers.data[i]->expire - now);
clock->timers.data[i]->fn2,
clock->timers.data[i]->expire);
spin_unlock(&clock->timer_lock);
--out->atomic;
}

9
fs/bcachefs/clock.h
View File

@ -4,12 +4,11 @@
void bch2_io_timer_add(struct io_clock *, struct io_timer *);
void bch2_io_timer_del(struct io_clock *, struct io_timer *);
void bch2_kthread_io_clock_wait(struct io_clock *, unsigned long,
unsigned long);
void bch2_kthread_io_clock_wait(struct io_clock *, u64, unsigned long);
void __bch2_increment_clock(struct io_clock *, unsigned);
void __bch2_increment_clock(struct io_clock *, u64);
static inline void bch2_increment_clock(struct bch_fs *c, unsigned sectors,
static inline void bch2_increment_clock(struct bch_fs *c, u64 sectors,
int rw)
{
struct io_clock *clock = &c->io_clock[rw];
@ -19,7 +18,7 @@ static inline void bch2_increment_clock(struct bch_fs *c, unsigned sectors,
__bch2_increment_clock(clock, this_cpu_xchg(*clock->pcpu_buf, 0));
}
void bch2_io_clock_schedule_timeout(struct io_clock *, unsigned long);
void bch2_io_clock_schedule_timeout(struct io_clock *, u64);
#define bch2_kthread_wait_event_ioclock_timeout(condition, clock, timeout)\
({ \

3
fs/bcachefs/clock_types.h
View File

@ -17,7 +17,8 @@ typedef void (*io_timer_fn)(struct io_timer *);
struct io_timer {
io_timer_fn fn;
unsigned long expire;
void *fn2;
u64 expire;
};
/* Amount to buffer up on a percpu counter */

3
fs/bcachefs/darray.c
View File

@ -13,7 +13,8 @@ int __bch2_darray_resize(darray_char *d, size_t element_size, size_t new_size, g
if (!data)
return -ENOMEM;
memcpy(data, d->data, d->size * element_size);
if (d->size)
memcpy(data, d->data, d->size * element_size);
if (d->data != d->preallocated)
kvfree(d->data);
d->data = data;

8
fs/bcachefs/dirent.c
View File

@ -534,6 +534,14 @@ int bch2_empty_dir_trans(struct btree_trans *trans, subvol_inum dir)
static int bch2_dir_emit(struct dir_context *ctx, struct bkey_s_c_dirent d, subvol_inum target)
{
struct qstr name = bch2_dirent_get_name(d);
/*
* Although not required by the kernel code, updating ctx->pos is needed
* for the bcachefs FUSE driver. Without this update, the FUSE
* implementation will be stuck in an infinite loop when reading
* directories (via the bcachefs_fuse_readdir callback).
* In kernel space, ctx->pos is updated by the VFS code.
*/
ctx->pos = d.k->p.offset;
bool ret = dir_emit(ctx, name.name,
name.len,
target.inum,

790
fs/bcachefs/disk_accounting.c Normal file
View File

@ -0,0 +1,790 @@
// SPDX-License-Identifier: GPL-2.0
#include "bcachefs.h"
#include "bcachefs_ioctl.h"
#include "btree_cache.h"
#include "btree_journal_iter.h"
#include "btree_update.h"
#include "btree_write_buffer.h"
#include "buckets.h"
#include "compress.h"
#include "disk_accounting.h"
#include "error.h"
#include "journal_io.h"
#include "replicas.h"
/*
* Notes on disk accounting:
*
* We have two parallel sets of counters to be concerned with, and both must be
* kept in sync.
*
* - Persistent/on disk accounting, stored in the accounting btree and updated
* via btree write buffer updates that treat new accounting keys as deltas to
* apply to existing values. But reading from a write buffer btree is
* expensive, so we also have
*
* - In memory accounting, where accounting is stored as an array of percpu
* counters, indexed by an eytzinger array of disk acounting keys/bpos (which
* are the same thing, excepting byte swabbing on big endian).
*
* Cheap to read, but non persistent.
*
* Disk accounting updates are generated by transactional triggers; these run as
* keys enter and leave the btree, and can compare old and new versions of keys;
* the output of these triggers are deltas to the various counters.
*
* Disk accounting updates are done as btree write buffer updates, where the
* counters in the disk accounting key are deltas that will be applied to the
* counter in the btree when the key is flushed by the write buffer (or journal
* replay).
*
* To do a disk accounting update:
* - initialize a disk_accounting_pos, to specify which counter is being update
* - initialize counter deltas, as an array of 1-3 s64s
* - call bch2_disk_accounting_mod()
*
* This queues up the accounting update to be done at transaction commit time.
* Underneath, it's a normal btree write buffer update.
*
* The transaction commit path is responsible for propagating updates to the in
* memory counters, with bch2_accounting_mem_mod().
*
* The commit path also assigns every disk accounting update a unique version
* number, based on the journal sequence number and offset within that journal
* buffer; this is used by journal replay to determine which updates have been
* done.
*
* The transaction commit path also ensures that replicas entry accounting
* updates are properly marked in the superblock (so that we know whether we can
* mount without data being unavailable); it will update the superblock if
* bch2_accounting_mem_mod() tells it to.
*/
static const char * const disk_accounting_type_strs[] = {
#define x(t, n, ...) [n] = #t,
BCH_DISK_ACCOUNTING_TYPES()
#undef x
NULL
};
static inline void accounting_key_init(struct bkey_i *k, struct disk_accounting_pos *pos,
s64 *d, unsigned nr)
{
struct bkey_i_accounting *acc = bkey_accounting_init(k);
acc->k.p = disk_accounting_pos_to_bpos(pos);
set_bkey_val_u64s(&acc->k, sizeof(struct bch_accounting) / sizeof(u64) + nr);
memcpy_u64s_small(acc->v.d, d, nr);
}
int bch2_disk_accounting_mod(struct btree_trans *trans,
struct disk_accounting_pos *k,
s64 *d, unsigned nr, bool gc)
{
/* Normalize: */
switch (k->type) {
case BCH_DISK_ACCOUNTING_replicas:
bubble_sort(k->replicas.devs, k->replicas.nr_devs, u8_cmp);
break;
}
BUG_ON(nr > BCH_ACCOUNTING_MAX_COUNTERS);
struct { __BKEY_PADDED(k, BCH_ACCOUNTING_MAX_COUNTERS); } k_i;
accounting_key_init(&k_i.k, k, d, nr);
return likely(!gc)
? bch2_trans_update_buffered(trans, BTREE_ID_accounting, &k_i.k)
: bch2_accounting_mem_add(trans, bkey_i_to_s_c_accounting(&k_i.k), true);
}
int bch2_mod_dev_cached_sectors(struct btree_trans *trans,
unsigned dev, s64 sectors,
bool gc)
{
struct disk_accounting_pos acc = {
.type = BCH_DISK_ACCOUNTING_replicas,
};
bch2_replicas_entry_cached(&acc.replicas, dev);
return bch2_disk_accounting_mod(trans, &acc, &sectors, 1, gc);
}
int bch2_accounting_invalid(struct bch_fs *c, struct bkey_s_c k,
enum bch_validate_flags flags,
struct printbuf *err)
{
return 0;
}
void bch2_accounting_key_to_text(struct printbuf *out, struct disk_accounting_pos *k)
{
if (k->type >= BCH_DISK_ACCOUNTING_TYPE_NR) {
prt_printf(out, "unknown type %u", k->type);
return;
}
prt_str(out, disk_accounting_type_strs[k->type]);
prt_str(out, " ");
switch (k->type) {
case BCH_DISK_ACCOUNTING_nr_inodes:
break;
case BCH_DISK_ACCOUNTING_persistent_reserved:
prt_printf(out, "replicas=%u", k->persistent_reserved.nr_replicas);
break;
case BCH_DISK_ACCOUNTING_replicas:
bch2_replicas_entry_to_text(out, &k->replicas);
break;
case BCH_DISK_ACCOUNTING_dev_data_type:
prt_printf(out, "dev=%u data_type=", k->dev_data_type.dev);
bch2_prt_data_type(out, k->dev_data_type.data_type);
break;
case BCH_DISK_ACCOUNTING_compression:
bch2_prt_compression_type(out, k->compression.type);
break;
case BCH_DISK_ACCOUNTING_snapshot:
prt_printf(out, "id=%u", k->snapshot.id);
break;
case BCH_DISK_ACCOUNTING_btree:
prt_printf(out, "btree=%s", bch2_btree_id_str(k->btree.id));
break;
}
}
void bch2_accounting_to_text(struct printbuf *out, struct bch_fs *c, struct bkey_s_c k)
{
struct bkey_s_c_accounting acc = bkey_s_c_to_accounting(k);
struct disk_accounting_pos acc_k;
bpos_to_disk_accounting_pos(&acc_k, k.k->p);
bch2_accounting_key_to_text(out, &acc_k);
for (unsigned i = 0; i < bch2_accounting_counters(k.k); i++)
prt_printf(out, " %lli", acc.v->d[i]);
}
void bch2_accounting_swab(struct bkey_s k)
{
for (u64 *p = (u64 *) k.v;
p < (u64 *) bkey_val_end(k);
p++)
*p = swab64(*p);
}
static inline bool accounting_to_replicas(struct bch_replicas_entry_v1 *r, struct bpos p)
{
struct disk_accounting_pos acc_k;
bpos_to_disk_accounting_pos(&acc_k, p);
switch (acc_k.type) {
case BCH_DISK_ACCOUNTING_replicas:
unsafe_memcpy(r, &acc_k.replicas,
replicas_entry_bytes(&acc_k.replicas),
"variable length struct");
return true;
default:
return false;
}
}
static int bch2_accounting_update_sb_one(struct bch_fs *c, struct bpos p)
{
struct bch_replicas_padded r;
return accounting_to_replicas(&r.e, p)
? bch2_mark_replicas(c, &r.e)
: 0;
}
/*
* Ensure accounting keys being updated are present in the superblock, when
* applicable (i.e. replicas updates)
*/
int bch2_accounting_update_sb(struct btree_trans *trans)
{
for (struct jset_entry *i = trans->journal_entries;
i != (void *) ((u64 *) trans->journal_entries + trans->journal_entries_u64s);
i = vstruct_next(i))
if (jset_entry_is_key(i) && i->start->k.type == KEY_TYPE_accounting) {
int ret = bch2_accounting_update_sb_one(trans->c, i->start->k.p);
if (ret)
return ret;
}
return 0;
}
static int __bch2_accounting_mem_insert(struct bch_fs *c, struct bkey_s_c_accounting a)
{
struct bch_accounting_mem *acc = &c->accounting;
/* raced with another insert, already present: */
if (eytzinger0_find(acc->k.data, acc->k.nr, sizeof(acc->k.data[0]),
accounting_pos_cmp, &a.k->p) < acc->k.nr)
return 0;
struct accounting_mem_entry n = {
.pos = a.k->p,
.version = a.k->version,
.nr_counters = bch2_accounting_counters(a.k),
.v[0] = __alloc_percpu_gfp(n.nr_counters * sizeof(u64),
sizeof(u64), GFP_KERNEL),
};
if (!n.v[0])
goto err;
if (acc->gc_running) {
n.v[1] = __alloc_percpu_gfp(n.nr_counters * sizeof(u64),
sizeof(u64), GFP_KERNEL);
if (!n.v[1])
goto err;
}
if (darray_push(&acc->k, n))
goto err;
eytzinger0_sort(acc->k.data, acc->k.nr, sizeof(acc->k.data[0]),
accounting_pos_cmp, NULL);
return 0;
err:
free_percpu(n.v[1]);
free_percpu(n.v[0]);
return -BCH_ERR_ENOMEM_disk_accounting;
}
int bch2_accounting_mem_insert(struct bch_fs *c, struct bkey_s_c_accounting a, bool gc)
{
struct bch_replicas_padded r;
if (accounting_to_replicas(&r.e, a.k->p) &&
!bch2_replicas_marked_locked(c, &r.e))
return -BCH_ERR_btree_insert_need_mark_replicas;
percpu_up_read(&c->mark_lock);
percpu_down_write(&c->mark_lock);
int ret = __bch2_accounting_mem_insert(c, a);
percpu_up_write(&c->mark_lock);
percpu_down_read(&c->mark_lock);
return ret;
}
static bool accounting_mem_entry_is_zero(struct accounting_mem_entry *e)
{
for (unsigned i = 0; i < e->nr_counters; i++)
if (percpu_u64_get(e->v[0] + i) ||
(e->v[1] &&
percpu_u64_get(e->v[1] + i)))
return false;
return true;
}
void bch2_accounting_mem_gc(struct bch_fs *c)
{
struct bch_accounting_mem *acc = &c->accounting;
percpu_down_write(&c->mark_lock);
struct accounting_mem_entry *dst = acc->k.data;
darray_for_each(acc->k, src) {
if (accounting_mem_entry_is_zero(src)) {
free_percpu(src->v[0]);
free_percpu(src->v[1]);
} else {
*dst++ = *src;
}
}
acc->k.nr = dst - acc->k.data;
eytzinger0_sort(acc->k.data, acc->k.nr, sizeof(acc->k.data[0]),
accounting_pos_cmp, NULL);
percpu_up_write(&c->mark_lock);
}
/*
* Read out accounting keys for replicas entries, as an array of
* bch_replicas_usage entries.
*
* Note: this may be deprecated/removed at smoe point in the future and replaced
* with something more general, it exists to support the ioctl used by the
* 'bcachefs fs usage' command.
*/
int bch2_fs_replicas_usage_read(struct bch_fs *c, darray_char *usage)
{
struct bch_accounting_mem *acc = &c->accounting;
int ret = 0;
darray_init(usage);
percpu_down_read(&c->mark_lock);
darray_for_each(acc->k, i) {
struct {
struct bch_replicas_usage r;
u8 pad[BCH_BKEY_PTRS_MAX];
} u;
if (!accounting_to_replicas(&u.r.r, i->pos))
continue;
u64 sectors;
bch2_accounting_mem_read_counters(acc, i - acc->k.data, &sectors, 1, false);
u.r.sectors = sectors;
ret = darray_make_room(usage, replicas_usage_bytes(&u.r));
if (ret)
break;
memcpy(&darray_top(*usage), &u.r, replicas_usage_bytes(&u.r));
usage->nr += replicas_usage_bytes(&u.r);
}
percpu_up_read(&c->mark_lock);
if (ret)
darray_exit(usage);
return ret;
}
int bch2_fs_accounting_read(struct bch_fs *c, darray_char *out_buf, unsigned accounting_types_mask)
{
struct bch_accounting_mem *acc = &c->accounting;
int ret = 0;
darray_init(out_buf);
percpu_down_read(&c->mark_lock);
darray_for_each(acc->k, i) {
struct disk_accounting_pos a_p;
bpos_to_disk_accounting_pos(&a_p, i->pos);
if (!(accounting_types_mask & BIT(a_p.type)))
continue;
ret = darray_make_room(out_buf, sizeof(struct bkey_i_accounting) +
sizeof(u64) * i->nr_counters);
if (ret)
break;
struct bkey_i_accounting *a_out =
bkey_accounting_init((void *) &darray_top(*out_buf));
set_bkey_val_u64s(&a_out->k, i->nr_counters);
a_out->k.p = i->pos;
bch2_accounting_mem_read_counters(acc, i - acc->k.data,
a_out->v.d, i->nr_counters, false);
if (!bch2_accounting_key_is_zero(accounting_i_to_s_c(a_out)))
out_buf->nr += bkey_bytes(&a_out->k);
}
percpu_up_read(&c->mark_lock);
if (ret)
darray_exit(out_buf);
return ret;
}
void bch2_fs_accounting_to_text(struct printbuf *out, struct bch_fs *c)
{
struct bch_accounting_mem *acc = &c->accounting;
percpu_down_read(&c->mark_lock);
out->atomic++;
eytzinger0_for_each(i, acc->k.nr) {
struct disk_accounting_pos acc_k;
bpos_to_disk_accounting_pos(&acc_k, acc->k.data[i].pos);
bch2_accounting_key_to_text(out, &acc_k);
u64 v[BCH_ACCOUNTING_MAX_COUNTERS];
bch2_accounting_mem_read_counters(acc, i, v, ARRAY_SIZE(v), false);
prt_str(out, ":");
for (unsigned j = 0; j < acc->k.data[i].nr_counters; j++)
prt_printf(out, " %llu", v[j]);
prt_newline(out);
}
--out->atomic;
percpu_up_read(&c->mark_lock);
}
static void bch2_accounting_free_counters(struct bch_accounting_mem *acc, bool gc)
{
darray_for_each(acc->k, e) {
free_percpu(e->v[gc]);
e->v[gc] = NULL;
}
}
int bch2_gc_accounting_start(struct bch_fs *c)
{
struct bch_accounting_mem *acc = &c->accounting;
int ret = 0;
percpu_down_write(&c->mark_lock);
darray_for_each(acc->k, e) {
e->v[1] = __alloc_percpu_gfp(e->nr_counters * sizeof(u64),
sizeof(u64), GFP_KERNEL);
if (!e->v[1]) {
bch2_accounting_free_counters(acc, true);
ret = -BCH_ERR_ENOMEM_disk_accounting;
break;
}
}
acc->gc_running = !ret;
percpu_up_write(&c->mark_lock);
return ret;
}
int bch2_gc_accounting_done(struct bch_fs *c)
{
struct bch_accounting_mem *acc = &c->accounting;
struct btree_trans *trans = bch2_trans_get(c);
struct printbuf buf = PRINTBUF;
struct bpos pos = POS_MIN;
int ret = 0;
percpu_down_write(&c->mark_lock);
while (1) {
unsigned idx = eytzinger0_find_ge(acc->k.data, acc->k.nr, sizeof(acc->k.data[0]),
accounting_pos_cmp, &pos);
if (idx >= acc->k.nr)
break;
struct accounting_mem_entry *e = acc->k.data + idx;
pos = bpos_successor(e->pos);
struct disk_accounting_pos acc_k;
bpos_to_disk_accounting_pos(&acc_k, e->pos);
u64 src_v[BCH_ACCOUNTING_MAX_COUNTERS];
u64 dst_v[BCH_ACCOUNTING_MAX_COUNTERS];
unsigned nr = e->nr_counters;
bch2_accounting_mem_read_counters(acc, idx, dst_v, nr, false);
bch2_accounting_mem_read_counters(acc, idx, src_v, nr, true);
if (memcmp(dst_v, src_v, nr * sizeof(u64))) {
printbuf_reset(&buf);
prt_str(&buf, "accounting mismatch for ");
bch2_accounting_key_to_text(&buf, &acc_k);
prt_str(&buf, ": got");
for (unsigned j = 0; j < nr; j++)
prt_printf(&buf, " %llu", dst_v[j]);
prt_str(&buf, " should be");
for (unsigned j = 0; j < nr; j++)
prt_printf(&buf, " %llu", src_v[j]);
for (unsigned j = 0; j < nr; j++)
src_v[j] -= dst_v[j];
if (fsck_err(trans, accounting_mismatch, "%s", buf.buf)) {
percpu_up_write(&c->mark_lock);
ret = commit_do(trans, NULL, NULL, 0,
bch2_disk_accounting_mod(trans, &acc_k, src_v, nr, false));
percpu_down_write(&c->mark_lock);
if (ret)
goto err;
if (!test_bit(BCH_FS_may_go_rw, &c->flags)) {
memset(&trans->fs_usage_delta, 0, sizeof(trans->fs_usage_delta));
struct { __BKEY_PADDED(k, BCH_ACCOUNTING_MAX_COUNTERS); } k_i;
accounting_key_init(&k_i.k, &acc_k, src_v, nr);
bch2_accounting_mem_mod_locked(trans, bkey_i_to_s_c_accounting(&k_i.k), false);
preempt_disable();
struct bch_fs_usage_base *dst = this_cpu_ptr(c->usage);
struct bch_fs_usage_base *src = &trans->fs_usage_delta;
acc_u64s((u64 *) dst, (u64 *) src, sizeof(*src) / sizeof(u64));
preempt_enable();
}
}
}
}
err:
fsck_err:
percpu_up_write(&c->mark_lock);
printbuf_exit(&buf);
bch2_trans_put(trans);
bch_err_fn(c, ret);
return ret;
}
static int accounting_read_key(struct btree_trans *trans, struct bkey_s_c k)
{
struct bch_fs *c = trans->c;
struct printbuf buf = PRINTBUF;
if (k.k->type != KEY_TYPE_accounting)
return 0;
percpu_down_read(&c->mark_lock);
int ret = __bch2_accounting_mem_mod(c, bkey_s_c_to_accounting(k), false);
percpu_up_read(&c->mark_lock);
if (bch2_accounting_key_is_zero(bkey_s_c_to_accounting(k)) &&
ret == -BCH_ERR_btree_insert_need_mark_replicas)
ret = 0;
struct disk_accounting_pos acc;
bpos_to_disk_accounting_pos(&acc, k.k->p);
if (fsck_err_on(ret == -BCH_ERR_btree_insert_need_mark_replicas,
trans, accounting_replicas_not_marked,
"accounting not marked in superblock replicas\n %s",
(bch2_accounting_key_to_text(&buf, &acc),
buf.buf)))
ret = bch2_accounting_update_sb_one(c, k.k->p);
fsck_err:
printbuf_exit(&buf);
return ret;
}
/*
* At startup time, initialize the in memory accounting from the btree (and
* journal)
*/
int bch2_accounting_read(struct bch_fs *c)
{
struct bch_accounting_mem *acc = &c->accounting;
struct btree_trans *trans = bch2_trans_get(c);
int ret = for_each_btree_key(trans, iter,
BTREE_ID_accounting, POS_MIN,
BTREE_ITER_prefetch|BTREE_ITER_all_snapshots, k, ({
struct bkey u;
struct bkey_s_c k = bch2_btree_path_peek_slot_exact(btree_iter_path(trans, &iter), &u);
accounting_read_key(trans, k);
}));
if (ret)
goto err;
struct journal_keys *keys = &c->journal_keys;
struct journal_key *dst = keys->data;
move_gap(keys, keys->nr);
darray_for_each(*keys, i) {
if (i->k->k.type == KEY_TYPE_accounting) {
struct bkey_s_c k = bkey_i_to_s_c(i->k);
unsigned idx = eytzinger0_find(acc->k.data, acc->k.nr,
sizeof(acc->k.data[0]),
accounting_pos_cmp, &k.k->p);
bool applied = idx < acc->k.nr &&
bversion_cmp(acc->k.data[idx].version, k.k->version) >= 0;
if (applied)
continue;
if (i + 1 < &darray_top(*keys) &&
i[1].k->k.type == KEY_TYPE_accounting &&
!journal_key_cmp(i, i + 1)) {
BUG_ON(bversion_cmp(i[0].k->k.version, i[1].k->k.version) >= 0);
i[1].journal_seq = i[0].journal_seq;
bch2_accounting_accumulate(bkey_i_to_accounting(i[1].k),
bkey_s_c_to_accounting(k));
continue;
}
ret = accounting_read_key(trans, k);
if (ret)
goto err;
}
*dst++ = *i;
}
keys->gap = keys->nr = dst - keys->data;
percpu_down_read(&c->mark_lock);
preempt_disable();
struct bch_fs_usage_base *usage = this_cpu_ptr(c->usage);
for (unsigned i = 0; i < acc->k.nr; i++) {
struct disk_accounting_pos k;
bpos_to_disk_accounting_pos(&k, acc->k.data[i].pos);
u64 v[BCH_ACCOUNTING_MAX_COUNTERS];
bch2_accounting_mem_read_counters(acc, i, v, ARRAY_SIZE(v), false);
switch (k.type) {
case BCH_DISK_ACCOUNTING_persistent_reserved:
usage->reserved += v[0] * k.persistent_reserved.nr_replicas;
break;
case BCH_DISK_ACCOUNTING_replicas:
fs_usage_data_type_to_base(usage, k.replicas.data_type, v[0]);
break;
case BCH_DISK_ACCOUNTING_dev_data_type:
rcu_read_lock();
struct bch_dev *ca = bch2_dev_rcu(c, k.dev_data_type.dev);
if (ca) {
struct bch_dev_usage_type __percpu *d = &ca->usage->d[k.dev_data_type.data_type];
percpu_u64_set(&d->buckets, v[0]);
percpu_u64_set(&d->sectors, v[1]);
percpu_u64_set(&d->fragmented, v[2]);
if (k.dev_data_type.data_type == BCH_DATA_sb ||
k.dev_data_type.data_type == BCH_DATA_journal)
usage->hidden += v[0] * ca->mi.bucket_size;
}
rcu_read_unlock();
break;
}
}
preempt_enable();
percpu_up_read(&c->mark_lock);
err:
bch2_trans_put(trans);
bch_err_fn(c, ret);
return ret;
}
int bch2_dev_usage_remove(struct bch_fs *c, unsigned dev)
{
return bch2_trans_run(c,
bch2_btree_write_buffer_flush_sync(trans) ?:
for_each_btree_key_commit(trans, iter, BTREE_ID_accounting, POS_MIN,
BTREE_ITER_all_snapshots, k, NULL, NULL, 0, ({
struct disk_accounting_pos acc;
bpos_to_disk_accounting_pos(&acc, k.k->p);
acc.type == BCH_DISK_ACCOUNTING_dev_data_type &&
acc.dev_data_type.dev == dev
? bch2_btree_bit_mod_buffered(trans, BTREE_ID_accounting, k.k->p, 0)
: 0;
})) ?:
bch2_btree_write_buffer_flush_sync(trans));
}
int bch2_dev_usage_init(struct bch_dev *ca, bool gc)
{
struct bch_fs *c = ca->fs;
struct disk_accounting_pos acc = {
.type = BCH_DISK_ACCOUNTING_dev_data_type,
.dev_data_type.dev = ca->dev_idx,
.dev_data_type.data_type = BCH_DATA_free,
};
u64 v[3] = { ca->mi.nbuckets - ca->mi.first_bucket, 0, 0 };
int ret = bch2_trans_do(c, NULL, NULL, 0,
bch2_disk_accounting_mod(trans, &acc, v, ARRAY_SIZE(v), gc));
bch_err_fn(c, ret);
return ret;
}
void bch2_verify_accounting_clean(struct bch_fs *c)
{
bool mismatch = false;
struct bch_fs_usage_base base = {}, base_inmem = {};
bch2_trans_run(c,
for_each_btree_key(trans, iter,
BTREE_ID_accounting, POS_MIN,
BTREE_ITER_all_snapshots, k, ({
u64 v[BCH_ACCOUNTING_MAX_COUNTERS];
struct bkey_s_c_accounting a = bkey_s_c_to_accounting(k);
unsigned nr = bch2_accounting_counters(k.k);
bch2_accounting_mem_read(c, k.k->p, v, nr);
if (memcmp(a.v->d, v, nr * sizeof(u64))) {
struct printbuf buf = PRINTBUF;
bch2_bkey_val_to_text(&buf, c, k);
prt_str(&buf, " !=");
for (unsigned j = 0; j < nr; j++)
prt_printf(&buf, " %llu", v[j]);
pr_err("%s", buf.buf);
printbuf_exit(&buf);
mismatch = true;
}
struct disk_accounting_pos acc_k;
bpos_to_disk_accounting_pos(&acc_k, a.k->p);
switch (acc_k.type) {
case BCH_DISK_ACCOUNTING_persistent_reserved:
base.reserved += acc_k.persistent_reserved.nr_replicas * a.v->d[0];
break;
case BCH_DISK_ACCOUNTING_replicas:
fs_usage_data_type_to_base(&base, acc_k.replicas.data_type, a.v->d[0]);
break;
case BCH_DISK_ACCOUNTING_dev_data_type: {
rcu_read_lock();
struct bch_dev *ca = bch2_dev_rcu(c, acc_k.dev_data_type.dev);
if (!ca) {
rcu_read_unlock();
continue;
}
v[0] = percpu_u64_get(&ca->usage->d[acc_k.dev_data_type.data_type].buckets);
v[1] = percpu_u64_get(&ca->usage->d[acc_k.dev_data_type.data_type].sectors);
v[2] = percpu_u64_get(&ca->usage->d[acc_k.dev_data_type.data_type].fragmented);
rcu_read_unlock();
if (memcmp(a.v->d, v, 3 * sizeof(u64))) {
struct printbuf buf = PRINTBUF;
bch2_bkey_val_to_text(&buf, c, k);
prt_str(&buf, " in mem");
for (unsigned j = 0; j < nr; j++)
prt_printf(&buf, " %llu", v[j]);
pr_err("dev accounting mismatch: %s", buf.buf);
printbuf_exit(&buf);
mismatch = true;
}
}
}
0;
})));
acc_u64s_percpu(&base_inmem.hidden, &c->usage->hidden, sizeof(base_inmem) / sizeof(u64));
#define check(x) \
if (base.x != base_inmem.x) { \
pr_err("fs_usage_base.%s mismatch: %llu != %llu", #x, base.x, base_inmem.x); \
mismatch = true; \
}
//check(hidden);
check(btree);
check(data);
check(cached);
check(reserved);
check(nr_inodes);
WARN_ON(mismatch);
}
void bch2_accounting_gc_free(struct bch_fs *c)
{
lockdep_assert_held(&c->mark_lock);
struct bch_accounting_mem *acc = &c->accounting;
bch2_accounting_free_counters(acc, true);
acc->gc_running = false;
}
void bch2_fs_accounting_exit(struct bch_fs *c)
{
struct bch_accounting_mem *acc = &c->accounting;
bch2_accounting_free_counters(acc, false);
darray_exit(&acc->k);
}

219
fs/bcachefs/disk_accounting.h Normal file
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@ -0,0 +1,219 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHEFS_DISK_ACCOUNTING_H
#define _BCACHEFS_DISK_ACCOUNTING_H
#include "eytzinger.h"
#include "sb-members.h"
static inline void bch2_u64s_neg(u64 *v, unsigned nr)
{
for (unsigned i = 0; i < nr; i++)
v[i] = -v[i];
}
static inline unsigned bch2_accounting_counters(const struct bkey *k)
{
return bkey_val_u64s(k) - offsetof(struct bch_accounting, d) / sizeof(u64);
}
static inline void bch2_accounting_neg(struct bkey_s_accounting a)
{
bch2_u64s_neg(a.v->d, bch2_accounting_counters(a.k));
}
static inline bool bch2_accounting_key_is_zero(struct bkey_s_c_accounting a)
{
for (unsigned i = 0; i < bch2_accounting_counters(a.k); i++)
if (a.v->d[i])
return false;
return true;
}
static inline void bch2_accounting_accumulate(struct bkey_i_accounting *dst,
struct bkey_s_c_accounting src)
{
EBUG_ON(dst->k.u64s != src.k->u64s);
for (unsigned i = 0; i < bch2_accounting_counters(&dst->k); i++)
dst->v.d[i] += src.v->d[i];
if (bversion_cmp(dst->k.version, src.k->version) < 0)
dst->k.version = src.k->version;
}
static inline void fs_usage_data_type_to_base(struct bch_fs_usage_base *fs_usage,
enum bch_data_type data_type,
s64 sectors)
{
switch (data_type) {
case BCH_DATA_btree:
fs_usage->btree += sectors;
break;
case BCH_DATA_user:
case BCH_DATA_parity:
fs_usage->data += sectors;
break;
case BCH_DATA_cached:
fs_usage->cached += sectors;
break;
default:
break;
}
}
static inline void bpos_to_disk_accounting_pos(struct disk_accounting_pos *acc, struct bpos p)
{
acc->_pad = p;
#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
bch2_bpos_swab(&acc->_pad);
#endif
}
static inline struct bpos disk_accounting_pos_to_bpos(struct disk_accounting_pos *k)
{
struct bpos ret = k->_pad;
#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
bch2_bpos_swab(&ret);
#endif
return ret;
}
int bch2_disk_accounting_mod(struct btree_trans *, struct disk_accounting_pos *,
s64 *, unsigned, bool);
int bch2_mod_dev_cached_sectors(struct btree_trans *, unsigned, s64, bool);
int bch2_accounting_invalid(struct bch_fs *, struct bkey_s_c,
enum bch_validate_flags, struct printbuf *);
void bch2_accounting_key_to_text(struct printbuf *, struct disk_accounting_pos *);
void bch2_accounting_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
void bch2_accounting_swab(struct bkey_s);
#define bch2_bkey_ops_accounting ((struct bkey_ops) { \
.key_invalid = bch2_accounting_invalid, \
.val_to_text = bch2_accounting_to_text, \
.swab = bch2_accounting_swab, \
.min_val_size = 8, \
})
int bch2_accounting_update_sb(struct btree_trans *);
static inline int accounting_pos_cmp(const void *_l, const void *_r)
{
const struct bpos *l = _l, *r = _r;
return bpos_cmp(*l, *r);
}
int bch2_accounting_mem_insert(struct bch_fs *, struct bkey_s_c_accounting, bool);
void bch2_accounting_mem_gc(struct bch_fs *);
static inline int __bch2_accounting_mem_mod(struct bch_fs *c, struct bkey_s_c_accounting a, bool gc)
{
struct bch_accounting_mem *acc = &c->accounting;
unsigned idx;
EBUG_ON(gc && !acc->gc_running);
while ((idx = eytzinger0_find(acc->k.data, acc->k.nr, sizeof(acc->k.data[0]),
accounting_pos_cmp, &a.k->p)) >= acc->k.nr) {
int ret = bch2_accounting_mem_insert(c, a, gc);
if (ret)
return ret;
}
struct accounting_mem_entry *e = &acc->k.data[idx];
EBUG_ON(bch2_accounting_counters(a.k) != e->nr_counters);
for (unsigned i = 0; i < bch2_accounting_counters(a.k); i++)
this_cpu_add(e->v[gc][i], a.v->d[i]);
return 0;
}
/*
* Update in memory counters so they match the btree update we're doing; called
* from transaction commit path
*/
static inline int bch2_accounting_mem_mod_locked(struct btree_trans *trans, struct bkey_s_c_accounting a, bool gc)
{
struct bch_fs *c = trans->c;
if (!gc) {
struct disk_accounting_pos acc_k;
bpos_to_disk_accounting_pos(&acc_k, a.k->p);
switch (acc_k.type) {
case BCH_DISK_ACCOUNTING_persistent_reserved:
trans->fs_usage_delta.reserved += acc_k.persistent_reserved.nr_replicas * a.v->d[0];
break;
case BCH_DISK_ACCOUNTING_replicas:
fs_usage_data_type_to_base(&trans->fs_usage_delta, acc_k.replicas.data_type, a.v->d[0]);
break;
case BCH_DISK_ACCOUNTING_dev_data_type:
rcu_read_lock();
struct bch_dev *ca = bch2_dev_rcu(c, acc_k.dev_data_type.dev);
if (ca) {
this_cpu_add(ca->usage->d[acc_k.dev_data_type.data_type].buckets, a.v->d[0]);
this_cpu_add(ca->usage->d[acc_k.dev_data_type.data_type].sectors, a.v->d[1]);
this_cpu_add(ca->usage->d[acc_k.dev_data_type.data_type].fragmented, a.v->d[2]);
}
rcu_read_unlock();
break;
}
}
return __bch2_accounting_mem_mod(c, a, gc);
}
static inline int bch2_accounting_mem_add(struct btree_trans *trans, struct bkey_s_c_accounting a, bool gc)
{
percpu_down_read(&trans->c->mark_lock);
int ret = bch2_accounting_mem_mod_locked(trans, a, gc);
percpu_up_read(&trans->c->mark_lock);
return ret;
}
static inline void bch2_accounting_mem_read_counters(struct bch_accounting_mem *acc,
unsigned idx, u64 *v, unsigned nr, bool gc)
{
memset(v, 0, sizeof(*v) * nr);
if (unlikely(idx >= acc->k.nr))
return;
struct accounting_mem_entry *e = &acc->k.data[idx];
nr = min_t(unsigned, nr, e->nr_counters);
for (unsigned i = 0; i < nr; i++)
v[i] = percpu_u64_get(e->v[gc] + i);
}
static inline void bch2_accounting_mem_read(struct bch_fs *c, struct bpos p,
u64 *v, unsigned nr)
{
struct bch_accounting_mem *acc = &c->accounting;
unsigned idx = eytzinger0_find(acc->k.data, acc->k.nr, sizeof(acc->k.data[0]),
accounting_pos_cmp, &p);
bch2_accounting_mem_read_counters(acc, idx, v, nr, false);
}
int bch2_fs_replicas_usage_read(struct bch_fs *, darray_char *);
int bch2_fs_accounting_read(struct bch_fs *, darray_char *, unsigned);
void bch2_fs_accounting_to_text(struct printbuf *, struct bch_fs *);
int bch2_gc_accounting_start(struct bch_fs *);
int bch2_gc_accounting_done(struct bch_fs *);
int bch2_accounting_read(struct bch_fs *);
int bch2_dev_usage_remove(struct bch_fs *, unsigned);
int bch2_dev_usage_init(struct bch_dev *, bool);
void bch2_verify_accounting_clean(struct bch_fs *c);
void bch2_accounting_gc_free(struct bch_fs *);
void bch2_fs_accounting_exit(struct bch_fs *);
#endif /* _BCACHEFS_DISK_ACCOUNTING_H */

162
fs/bcachefs/disk_accounting_format.h Normal file
View File

@ -0,0 +1,162 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHEFS_DISK_ACCOUNTING_FORMAT_H
#define _BCACHEFS_DISK_ACCOUNTING_FORMAT_H
#include "replicas_format.h"
/*
* Disk accounting - KEY_TYPE_accounting - on disk format:
*
* Here, the key has considerably more structure than a typical key (bpos); an
* accounting key is 'struct disk_accounting_pos', which is a union of bpos.
*
* More specifically: a key is just a muliword integer (where word endianness
* matches native byte order), so we're treating bpos as an opaque 20 byte
* integer and mapping bch_accounting_key to that.
*
* This is a type-tagged union of all our various subtypes; a disk accounting
* key can be device counters, replicas counters, et cetera - it's extensible.
*
* The value is a list of u64s or s64s; the number of counters is specific to a
* given accounting type.
*
* Unlike with other key types, updates are _deltas_, and the deltas are not
* resolved until the update to the underlying btree, done by btree write buffer
* flush or journal replay.
*
* Journal replay in particular requires special handling. The journal tracks a
* range of entries which may possibly have not yet been applied to the btree
* yet - it does not know definitively whether individual entries are dirty and
* still need to be applied.
*
* To handle this, we use the version field of struct bkey, and give every
* accounting update a unique version number - a total ordering in time; the
* version number is derived from the key's position in the journal. Then
* journal replay can compare the version number of the key from the journal
* with the version number of the key in the btree to determine if a key needs
* to be replayed.
*
* For this to work, we must maintain this strict time ordering of updates as
* they are flushed to the btree, both via write buffer flush and via journal
* replay. This has complications for the write buffer code while journal replay
* is still in progress; the write buffer cannot flush any accounting keys to
* the btree until journal replay has finished replaying its accounting keys, or
* the (newer) version number of the keys from the write buffer will cause
* updates from journal replay to be lost.
*/
struct bch_accounting {
struct bch_val v;
__u64 d[];
};
#define BCH_ACCOUNTING_MAX_COUNTERS 3
#define BCH_DATA_TYPES() \
x(free, 0) \
x(sb, 1) \
x(journal, 2) \
x(btree, 3) \
x(user, 4) \
x(cached, 5) \
x(parity, 6) \
x(stripe, 7) \
x(need_gc_gens, 8) \
x(need_discard, 9) \
x(unstriped, 10)
enum bch_data_type {
#define x(t, n) BCH_DATA_##t,
BCH_DATA_TYPES()
#undef x
BCH_DATA_NR
};
static inline bool data_type_is_empty(enum bch_data_type type)
{
switch (type) {
case BCH_DATA_free:
case BCH_DATA_need_gc_gens:
case BCH_DATA_need_discard:
return true;
default:
return false;
}
}
static inline bool data_type_is_hidden(enum bch_data_type type)
{
switch (type) {
case BCH_DATA_sb:
case BCH_DATA_journal:
return true;
default:
return false;
}
}
#define BCH_DISK_ACCOUNTING_TYPES() \
x(nr_inodes, 0) \
x(persistent_reserved, 1) \
x(replicas, 2) \
x(dev_data_type, 3) \
x(compression, 4) \
x(snapshot, 5) \
x(btree, 6) \
x(rebalance_work, 7)
enum disk_accounting_type {
#define x(f, nr) BCH_DISK_ACCOUNTING_##f = nr,
BCH_DISK_ACCOUNTING_TYPES()
#undef x
BCH_DISK_ACCOUNTING_TYPE_NR,
};
struct bch_nr_inodes {
};
struct bch_persistent_reserved {
__u8 nr_replicas;
};
struct bch_dev_data_type {
__u8 dev;
__u8 data_type;
};
struct bch_dev_stripe_buckets {
__u8 dev;
};
struct bch_acct_compression {
__u8 type;
};
struct bch_acct_snapshot {
__u32 id;
};
struct bch_acct_btree {
__u32 id;
};
struct disk_accounting_pos {
union {
struct {
__u8 type;
union {
struct bch_nr_inodes nr_inodes;
struct bch_persistent_reserved persistent_reserved;
struct bch_replicas_entry_v1 replicas;
struct bch_dev_data_type dev_data_type;
struct bch_dev_stripe_buckets dev_stripe_buckets;
struct bch_acct_compression compression;
struct bch_acct_snapshot snapshot;
struct bch_acct_btree btree;
};
};
struct bpos _pad;
};
};
#endif /* _BCACHEFS_DISK_ACCOUNTING_FORMAT_H */

19
fs/bcachefs/disk_accounting_types.h Normal file
View File

@ -0,0 +1,19 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHEFS_DISK_ACCOUNTING_TYPES_H
#define _BCACHEFS_DISK_ACCOUNTING_TYPES_H
#include "darray.h"
struct accounting_mem_entry {
struct bpos pos;
struct bversion version;
unsigned nr_counters;
u64 __percpu *v[2];
};
struct bch_accounting_mem {
DARRAY(struct accounting_mem_entry) k;
bool gc_running;
};
#endif /* _BCACHEFS_DISK_ACCOUNTING_TYPES_H */

2
fs/bcachefs/disk_groups.c
View File

@ -511,7 +511,7 @@ int bch2_opt_target_parse(struct bch_fs *c, const char *val, u64 *res,
return -EINVAL;
if (!c)
return 0;
return -BCH_ERR_option_needs_open_fs;
if (!strlen(val) || !strcmp(val, "none")) {
*res = 0;

117
fs/bcachefs/ec.c
View File

@ -13,6 +13,7 @@
#include "btree_write_buffer.h"
#include "buckets.h"
#include "checksum.h"
#include "disk_accounting.h"
#include "disk_groups.h"
#include "ec.h"
#include "error.h"
@ -282,7 +283,7 @@ static int mark_stripe_bucket(struct btree_trans *trans,
if (flags & BTREE_TRIGGER_transactional) {
struct bkey_i_alloc_v4 *a =
bch2_trans_start_alloc_update(trans, bucket);
bch2_trans_start_alloc_update(trans, bucket, 0);
ret = PTR_ERR_OR_ZERO(a) ?:
__mark_stripe_bucket(trans, ca, s, ptr_idx, deleting, bucket, &a->v, flags);
}
@ -300,13 +301,12 @@ static int mark_stripe_bucket(struct btree_trans *trans,
bucket_lock(g);
struct bch_alloc_v4 old = bucket_m_to_alloc(*g), new = old;
ret = __mark_stripe_bucket(trans, ca, s, ptr_idx, deleting, bucket, &new, flags);
if (!ret) {
alloc_to_bucket(g, new);
bch2_dev_usage_update(c, ca, &old, &new, 0, true);
}
alloc_to_bucket(g, new);
bucket_unlock(g);
err_unlock:
percpu_up_read(&c->mark_lock);
if (!ret)
ret = bch2_alloc_key_to_dev_counters(trans, ca, &old, &new, flags);
}
err:
bch2_dev_put(ca);
@ -368,7 +368,12 @@ int bch2_trigger_stripe(struct btree_trans *trans,
if (unlikely(flags & BTREE_TRIGGER_check_repair))
return bch2_check_fix_ptrs(trans, btree, level, _new.s_c, flags);
if (flags & BTREE_TRIGGER_transactional) {
BUG_ON(new_s && old_s &&
(new_s->nr_blocks != old_s->nr_blocks ||
new_s->nr_redundant != old_s->nr_redundant));
if (flags & (BTREE_TRIGGER_transactional|BTREE_TRIGGER_gc)) {
/*
* If the pointers aren't changing, we don't need to do anything:
*/
@ -379,26 +384,58 @@ int bch2_trigger_stripe(struct btree_trans *trans,
new_s->nr_blocks * sizeof(struct bch_extent_ptr)))
return 0;
BUG_ON(new_s && old_s &&
(new_s->nr_blocks != old_s->nr_blocks ||
new_s->nr_redundant != old_s->nr_redundant));
struct gc_stripe *gc = NULL;
if (flags & BTREE_TRIGGER_gc) {
gc = genradix_ptr_alloc(&c->gc_stripes, idx, GFP_KERNEL);
if (!gc) {
bch_err(c, "error allocating memory for gc_stripes, idx %llu", idx);
return -BCH_ERR_ENOMEM_mark_stripe;
}
/*
* This will be wrong when we bring back runtime gc: we should
* be unmarking the old key and then marking the new key
*
* Also: when we bring back runtime gc, locking
*/
gc->alive = true;
gc->sectors = le16_to_cpu(new_s->sectors);
gc->nr_blocks = new_s->nr_blocks;
gc->nr_redundant = new_s->nr_redundant;
for (unsigned i = 0; i < new_s->nr_blocks; i++)
gc->ptrs[i] = new_s->ptrs[i];
/*
* gc recalculates this field from stripe ptr
* references:
*/
memset(gc->block_sectors, 0, sizeof(gc->block_sectors));
}
if (new_s) {
s64 sectors = le16_to_cpu(new_s->sectors);
s64 sectors = (u64) le16_to_cpu(new_s->sectors) * new_s->nr_redundant;
struct bch_replicas_padded r;
bch2_bkey_to_replicas(&r.e, new);
int ret = bch2_update_replicas_list(trans, &r.e, sectors * new_s->nr_redundant);
struct disk_accounting_pos acc = {
.type = BCH_DISK_ACCOUNTING_replicas,
};
bch2_bkey_to_replicas(&acc.replicas, new);
int ret = bch2_disk_accounting_mod(trans, &acc, &sectors, 1, gc);
if (ret)
return ret;
if (gc)
memcpy(&gc->r.e, &acc.replicas, replicas_entry_bytes(&acc.replicas));
}
if (old_s) {
s64 sectors = -((s64) le16_to_cpu(old_s->sectors));
s64 sectors = -((s64) le16_to_cpu(old_s->sectors)) * old_s->nr_redundant;
struct bch_replicas_padded r;
bch2_bkey_to_replicas(&r.e, old);
int ret = bch2_update_replicas_list(trans, &r.e, sectors * old_s->nr_redundant);
struct disk_accounting_pos acc = {
.type = BCH_DISK_ACCOUNTING_replicas,
};
bch2_bkey_to_replicas(&acc.replicas, old);
int ret = bch2_disk_accounting_mod(trans, &acc, &sectors, 1, gc);
if (ret)
return ret;
}
@ -447,52 +484,6 @@ int bch2_trigger_stripe(struct btree_trans *trans,
}
}
if (flags & BTREE_TRIGGER_gc) {
struct gc_stripe *m =
genradix_ptr_alloc(&c->gc_stripes, idx, GFP_KERNEL);
if (!m) {
bch_err(c, "error allocating memory for gc_stripes, idx %llu",
idx);
return -BCH_ERR_ENOMEM_mark_stripe;
}
/*
* This will be wrong when we bring back runtime gc: we should
* be unmarking the old key and then marking the new key
*/
m->alive = true;
m->sectors = le16_to_cpu(new_s->sectors);
m->nr_blocks = new_s->nr_blocks;
m->nr_redundant = new_s->nr_redundant;
for (unsigned i = 0; i < new_s->nr_blocks; i++)
m->ptrs[i] = new_s->ptrs[i];
bch2_bkey_to_replicas(&m->r.e, new);
/*
* gc recalculates this field from stripe ptr
* references:
*/
memset(m->block_sectors, 0, sizeof(m->block_sectors));
int ret = mark_stripe_buckets(trans, old, new, flags);
if (ret)
return ret;
ret = bch2_update_replicas(c, new, &m->r.e,
((s64) m->sectors * m->nr_redundant),
0, true);
if (ret) {
struct printbuf buf = PRINTBUF;
bch2_bkey_val_to_text(&buf, c, new);
bch2_fs_fatal_error(c, ": no replicas entry for %s", buf.buf);
printbuf_exit(&buf);
return ret;
}
}
return 0;
}

3
fs/bcachefs/errcode.h
View File

@ -257,7 +257,8 @@
x(BCH_ERR_nopromote, nopromote_no_writes) \
x(BCH_ERR_nopromote, nopromote_enomem) \
x(0, need_inode_lock) \
x(0, invalid_snapshot_node)
x(0, invalid_snapshot_node) \
x(0, option_needs_open_fs)
enum bch_errcode {
BCH_ERR_START = 2048,

56
fs/bcachefs/error.c
View File

@ -1,5 +1,6 @@
// SPDX-License-Identifier: GPL-2.0
#include "bcachefs.h"
#include "btree_iter.h"
#include "error.h"
#include "journal.h"
#include "recovery_passes.h"
@ -98,7 +99,7 @@ static enum ask_yn parse_yn_response(char *buf)
}
#ifdef __KERNEL__
static enum ask_yn bch2_fsck_ask_yn(struct bch_fs *c)
static enum ask_yn bch2_fsck_ask_yn(struct bch_fs *c, struct btree_trans *trans)
{
struct stdio_redirect *stdio = c->stdio;
@ -108,25 +109,44 @@ static enum ask_yn bch2_fsck_ask_yn(struct bch_fs *c)
if (!stdio)
return YN_NO;
char buf[100];
if (trans)
bch2_trans_unlock(trans);
unsigned long unlock_long_at = trans ? jiffies + HZ * 2 : 0;
darray_char line = {};
int ret;
do {
unsigned long t;
bch2_print(c, " (y,n, or Y,N for all errors of this type) ");
rewait:
t = unlock_long_at
? max_t(long, unlock_long_at - jiffies, 0)
: MAX_SCHEDULE_TIMEOUT;
int r = bch2_stdio_redirect_readline(stdio, buf, sizeof(buf) - 1);
if (r < 0)
return YN_NO;
buf[r] = '\0';
} while ((ret = parse_yn_response(buf)) < 0);
int r = bch2_stdio_redirect_readline_timeout(stdio, &line, t);
if (r == -ETIME) {
bch2_trans_unlock_long(trans);
unlock_long_at = 0;
goto rewait;
}
if (r < 0) {
ret = YN_NO;
break;
}
darray_last(line) = '\0';
} while ((ret = parse_yn_response(line.data)) < 0);
darray_exit(&line);
return ret;
}
#else
#include "tools-util.h"
static enum ask_yn bch2_fsck_ask_yn(struct bch_fs *c)
static enum ask_yn bch2_fsck_ask_yn(struct bch_fs *c, struct btree_trans *trans)
{
char *buf = NULL;
size_t buflen = 0;
@ -198,7 +218,8 @@ static const u8 fsck_flags_extra[] = {
#undef x
};
int bch2_fsck_err(struct bch_fs *c,
int __bch2_fsck_err(struct bch_fs *c,
struct btree_trans *trans,
enum bch_fsck_flags flags,
enum bch_sb_error_id err,
const char *fmt, ...)
@ -210,9 +231,16 @@ int bch2_fsck_err(struct bch_fs *c,
int ret = -BCH_ERR_fsck_ignore;
const char *action_orig = "fix?", *action = action_orig;
might_sleep();
if (!WARN_ON(err >= ARRAY_SIZE(fsck_flags_extra)))
flags |= fsck_flags_extra[err];
if (!c)
c = trans->c;
WARN_ON(!trans && bch2_current_has_btree_trans(c));
if ((flags & FSCK_CAN_FIX) &&
test_bit(err, c->sb.errors_silent))
return -BCH_ERR_fsck_fix;
@ -314,7 +342,15 @@ int bch2_fsck_err(struct bch_fs *c,
bch2_print_string_as_lines(KERN_ERR, out->buf);
print = false;
int ask = bch2_fsck_ask_yn(c);
int ask = bch2_fsck_ask_yn(c, trans);
if (trans) {
ret = bch2_trans_relock(trans);
if (ret) {
mutex_unlock(&c->fsck_error_msgs_lock);
goto err;
}
}
if (ask >= YN_ALLNO && s)
s->fix = ask == YN_ALLNO

22
fs/bcachefs/error.h
View File

@ -110,18 +110,21 @@ struct fsck_err_state {
#define fsck_err_count(_c, _err) bch2_sb_err_count(_c, BCH_FSCK_ERR_##_err)
__printf(4, 5) __cold
int bch2_fsck_err(struct bch_fs *,
__printf(5, 6) __cold
int __bch2_fsck_err(struct bch_fs *, struct btree_trans *,
enum bch_fsck_flags,
enum bch_sb_error_id,
const char *, ...);
#define bch2_fsck_err(c, _flags, _err_type, ...) \
__bch2_fsck_err(type_is(c, struct bch_fs *) ? (struct bch_fs *) c : NULL,\
type_is(c, struct btree_trans *) ? (struct btree_trans *) c : NULL,\
_flags, BCH_FSCK_ERR_##_err_type, __VA_ARGS__)
void bch2_flush_fsck_errs(struct bch_fs *);
#define __fsck_err(c, _flags, _err_type, ...) \
({ \
int _ret = bch2_fsck_err(c, _flags, BCH_FSCK_ERR_##_err_type, \
__VA_ARGS__); \
\
int _ret = bch2_fsck_err(c, _flags, _err_type, __VA_ARGS__); \
if (_ret != -BCH_ERR_fsck_fix && \
_ret != -BCH_ERR_fsck_ignore) { \
ret = _ret; \
@ -136,7 +139,14 @@ void bch2_flush_fsck_errs(struct bch_fs *);
/* XXX: mark in superblock that filesystem contains errors, if we ignore: */
#define __fsck_err_on(cond, c, _flags, _err_type, ...) \
(unlikely(cond) ? __fsck_err(c, _flags, _err_type, __VA_ARGS__) : false)
({ \
might_sleep(); \
\
if (type_is(c, struct bch_fs *)) \
WARN_ON(bch2_current_has_btree_trans((struct bch_fs *) c));\
\
(unlikely(cond) ? __fsck_err(c, _flags, _err_type, __VA_ARGS__) : false);\
})
#define need_fsck_err_on(cond, c, _err_type, ...) \
__fsck_err_on(cond, c, FSCK_CAN_IGNORE|FSCK_NEED_FSCK, _err_type, __VA_ARGS__)

29
fs/bcachefs/extents.c
View File

@ -37,8 +37,8 @@ static void bch2_extent_crc_pack(union bch_extent_crc *,
struct bch_extent_crc_unpacked,
enum bch_extent_entry_type);
static struct bch_dev_io_failures *dev_io_failures(struct bch_io_failures *f,
unsigned dev)
struct bch_dev_io_failures *bch2_dev_io_failures(struct bch_io_failures *f,
unsigned dev)
{
struct bch_dev_io_failures *i;
@ -52,7 +52,7 @@ static struct bch_dev_io_failures *dev_io_failures(struct bch_io_failures *f,
void bch2_mark_io_failure(struct bch_io_failures *failed,
struct extent_ptr_decoded *p)
{
struct bch_dev_io_failures *f = dev_io_failures(failed, p->ptr.dev);
struct bch_dev_io_failures *f = bch2_dev_io_failures(failed, p->ptr.dev);
if (!f) {
BUG_ON(failed->nr >= ARRAY_SIZE(failed->devs));
@ -140,7 +140,7 @@ int bch2_bkey_pick_read_device(struct bch_fs *c, struct bkey_s_c k,
if (p.ptr.cached && (!ca || dev_ptr_stale_rcu(ca, &p.ptr)))
continue;
f = failed ? dev_io_failures(failed, p.ptr.dev) : NULL;
f = failed ? bch2_dev_io_failures(failed, p.ptr.dev) : NULL;
if (f)
p.idx = f->nr_failed < f->nr_retries
? f->idx
@ -1034,6 +1034,18 @@ void bch2_extent_ptr_to_text(struct printbuf *out, struct bch_fs *c, const struc
--out->atomic;
}
void bch2_extent_crc_unpacked_to_text(struct printbuf *out, struct bch_extent_crc_unpacked *crc)
{
prt_printf(out, "crc: c_size %u size %u offset %u nonce %u csum ",
crc->compressed_size,
crc->uncompressed_size,
crc->offset, crc->nonce);
bch2_prt_csum_type(out, crc->csum_type);
prt_printf(out, " %0llx:%0llx ", crc->csum.hi, crc->csum.lo);
prt_str(out, " compress ");
bch2_prt_compression_type(out, crc->compression_type);
}
void bch2_bkey_ptrs_to_text(struct printbuf *out, struct bch_fs *c,
struct bkey_s_c k)
{
@ -1059,13 +1071,7 @@ void bch2_bkey_ptrs_to_text(struct printbuf *out, struct bch_fs *c,
struct bch_extent_crc_unpacked crc =
bch2_extent_crc_unpack(k.k, entry_to_crc(entry));
prt_printf(out, "crc: c_size %u size %u offset %u nonce %u csum ",
crc.compressed_size,
crc.uncompressed_size,
crc.offset, crc.nonce);
bch2_prt_csum_type(out, crc.csum_type);
prt_str(out, " compress ");
bch2_prt_compression_type(out, crc.compression_type);
bch2_extent_crc_unpacked_to_text(out, &crc);
break;
}
case BCH_EXTENT_ENTRY_stripe_ptr: {
@ -1096,6 +1102,7 @@ void bch2_bkey_ptrs_to_text(struct printbuf *out, struct bch_fs *c,
}
}
static int extent_ptr_invalid(struct bch_fs *c,
struct bkey_s_c k,
enum bch_validate_flags flags,

4
fs/bcachefs/extents.h
View File

@ -212,6 +212,8 @@ static inline bool crc_is_encoded(struct bch_extent_crc_unpacked crc)
return crc.csum_type != BCH_CSUM_none || crc_is_compressed(crc);
}
void bch2_extent_crc_unpacked_to_text(struct printbuf *, struct bch_extent_crc_unpacked *);
/* bkey_ptrs: generically over any key type that has ptrs */
struct bkey_ptrs_c {
@ -397,6 +399,8 @@ out: \
/* utility code common to all keys with pointers: */
struct bch_dev_io_failures *bch2_dev_io_failures(struct bch_io_failures *,
unsigned);
void bch2_mark_io_failure(struct bch_io_failures *,
struct extent_ptr_decoded *);
int bch2_bkey_pick_read_device(struct bch_fs *, struct bkey_s_c,

11
fs/bcachefs/eytzinger.h
View File

@ -286,6 +286,17 @@ static inline int eytzinger0_find_gt(void *base, size_t nr, size_t size,
return eytzinger0_next(idx, nr);
}
static inline int eytzinger0_find_ge(void *base, size_t nr, size_t size,
cmp_func_t cmp, const void *search)
{
ssize_t idx = eytzinger0_find_le(base, nr, size, cmp, search);
if (idx < nr && !cmp(base + idx * size, search))
return idx;
return eytzinger0_next(idx, nr);
}
#define eytzinger0_find(base, nr, size, _cmp, search) \
({ \
void *_base = (base); \

2
fs/bcachefs/fs-common.h
View File

@ -2,6 +2,8 @@
#ifndef _BCACHEFS_FS_COMMON_H
#define _BCACHEFS_FS_COMMON_H
#include "dirent.h"
struct posix_acl;
#define BCH_CREATE_TMPFILE (1U << 0)

39
fs/bcachefs/fs-io-buffered.c
View File

@ -678,8 +678,8 @@ int bch2_write_begin(struct file *file, struct address_space *mapping,
bch2_pagecache_add_get(inode);
folio = __filemap_get_folio(mapping, pos >> PAGE_SHIFT,
FGP_LOCK|FGP_WRITE|FGP_CREAT|FGP_STABLE,
mapping_gfp_mask(mapping));
FGP_WRITEBEGIN | fgf_set_order(len),
mapping_gfp_mask(mapping));
if (IS_ERR_OR_NULL(folio))
goto err_unlock;
@ -820,9 +820,8 @@ static int __bch2_buffered_write(struct bch_inode_info *inode,
darray_init(&fs);
ret = bch2_filemap_get_contig_folios_d(mapping, pos, end,
FGP_LOCK|FGP_WRITE|FGP_STABLE|FGP_CREAT,
mapping_gfp_mask(mapping),
&fs);
FGP_WRITEBEGIN | fgf_set_order(len),
mapping_gfp_mask(mapping), &fs);
if (ret)
goto out;
@ -864,24 +863,26 @@ static int __bch2_buffered_write(struct bch_inode_info *inode,
f_pos = pos;
f_offset = pos - folio_pos(darray_first(fs));
darray_for_each(fs, fi) {
ssize_t f_reserved;
f = *fi;
f_len = min(end, folio_end_pos(f)) - f_pos;
f_reserved = bch2_folio_reservation_get_partial(c, inode, f, &res, f_offset, f_len);
/*
* XXX: per POSIX and fstests generic/275, on -ENOSPC we're
* supposed to write as much as we have disk space for.
*
* On failure here we should still write out a partial page if
* we aren't completely out of disk space - we don't do that
* yet:
*/
ret = bch2_folio_reservation_get(c, inode, f, &res, f_offset, f_len);
if (unlikely(ret)) {
folios_trunc(&fs, fi);
if (!fs.nr)
goto out;
if (unlikely(f_reserved != f_len)) {
if (f_reserved < 0) {
if (f == darray_first(fs)) {
ret = f_reserved;
goto out;
}
folios_trunc(&fs, fi);
end = min(end, folio_end_pos(darray_last(fs)));
} else {
folios_trunc(&fs, fi + 1);
end = f_pos + f_reserved;
}
end = min(end, folio_end_pos(darray_last(fs)));
break;
}

4
fs/bcachefs/fs-io-direct.c
View File

@ -179,7 +179,7 @@ ssize_t bch2_read_iter(struct kiocb *iocb, struct iov_iter *iter)
struct bch_inode_info *inode = file_bch_inode(file);
struct address_space *mapping = file->f_mapping;
size_t count = iov_iter_count(iter);
ssize_t ret;
ssize_t ret = 0;
if (!count)
return 0; /* skip atime */
@ -205,7 +205,7 @@ ssize_t bch2_read_iter(struct kiocb *iocb, struct iov_iter *iter)
iocb->ki_pos += ret;
} else {
bch2_pagecache_add_get(inode);
ret = generic_file_read_iter(iocb, iter);
ret = filemap_read(iocb, iter, ret);
bch2_pagecache_add_put(inode);
}
out:

37
fs/bcachefs/fs-io-pagecache.c
View File

@ -423,7 +423,7 @@ int bch2_folio_reservation_get(struct bch_fs *c,
struct bch_inode_info *inode,
struct folio *folio,
struct bch2_folio_reservation *res,
unsigned offset, unsigned len)
size_t offset, size_t len)
{
struct bch_folio *s = bch2_folio_create(folio, 0);
unsigned i, disk_sectors = 0, quota_sectors = 0;
@ -437,8 +437,7 @@ int bch2_folio_reservation_get(struct bch_fs *c,
for (i = round_down(offset, block_bytes(c)) >> 9;
i < round_up(offset + len, block_bytes(c)) >> 9;
i++) {
disk_sectors += sectors_to_reserve(&s->s[i],
res->disk.nr_replicas);
disk_sectors += sectors_to_reserve(&s->s[i], res->disk.nr_replicas);
quota_sectors += s->s[i].state == SECTOR_unallocated;
}
@ -449,12 +448,9 @@ int bch2_folio_reservation_get(struct bch_fs *c,
}
if (quota_sectors) {
ret = bch2_quota_reservation_add(c, inode, &res->quota,
quota_sectors, true);
ret = bch2_quota_reservation_add(c, inode, &res->quota, quota_sectors, true);
if (unlikely(ret)) {
struct disk_reservation tmp = {
.sectors = disk_sectors
};
struct disk_reservation tmp = { .sectors = disk_sectors };
bch2_disk_reservation_put(c, &tmp);
res->disk.sectors -= disk_sectors;
@ -465,6 +461,31 @@ int bch2_folio_reservation_get(struct bch_fs *c,
return 0;
}
ssize_t bch2_folio_reservation_get_partial(struct bch_fs *c,
struct bch_inode_info *inode,
struct folio *folio,
struct bch2_folio_reservation *res,
size_t offset, size_t len)
{
size_t l, reserved = 0;
int ret;
while ((l = len - reserved)) {
while ((ret = bch2_folio_reservation_get(c, inode, folio, res, offset, l))) {
if ((offset & (block_bytes(c) - 1)) + l <= block_bytes(c))
return reserved ?: ret;
len = reserved + l;
l /= 2;
}
offset += l;
reserved += l;
}
return reserved;
}
static void bch2_clear_folio_bits(struct folio *folio)
{
struct bch_inode_info *inode = to_bch_ei(folio->mapping->host);

7
fs/bcachefs/fs-io-pagecache.h
View File

@ -153,7 +153,12 @@ int bch2_folio_reservation_get(struct bch_fs *,
struct bch_inode_info *,
struct folio *,
struct bch2_folio_reservation *,
unsigned, unsigned);
size_t, size_t);
ssize_t bch2_folio_reservation_get_partial(struct bch_fs *,
struct bch_inode_info *,
struct folio *,
struct bch2_folio_reservation *,
size_t, size_t);
void bch2_set_folio_dirty(struct bch_fs *,
struct bch_inode_info *,

23
fs/bcachefs/fs-io.c
View File

@ -192,7 +192,9 @@ int bch2_fsync(struct file *file, loff_t start, loff_t end, int datasync)
{
struct bch_inode_info *inode = file_bch_inode(file);
struct bch_fs *c = inode->v.i_sb->s_fs_info;
int ret;
int ret, err;
trace_bch2_fsync(file, datasync);
ret = file_write_and_wait_range(file, start, end);
if (ret)
@ -205,6 +207,11 @@ out:
ret = bch2_err_class(ret);
if (ret == -EROFS)
ret = -EIO;
err = file_check_and_advance_wb_err(file);
if (!ret)
ret = err;
return ret;
}
@ -508,7 +515,7 @@ static int inode_update_times_fn(struct btree_trans *trans,
return 0;
}
static long bchfs_fpunch(struct bch_inode_info *inode, loff_t offset, loff_t len)
static noinline long bchfs_fpunch(struct bch_inode_info *inode, loff_t offset, loff_t len)
{
struct bch_fs *c = inode->v.i_sb->s_fs_info;
u64 end = offset + len;
@ -547,7 +554,7 @@ err:
return ret;
}
static long bchfs_fcollapse_finsert(struct bch_inode_info *inode,
static noinline long bchfs_fcollapse_finsert(struct bch_inode_info *inode,
loff_t offset, loff_t len,
bool insert)
{
@ -583,7 +590,7 @@ static long bchfs_fcollapse_finsert(struct bch_inode_info *inode,
return ret;
}
static int __bchfs_fallocate(struct bch_inode_info *inode, int mode,
static noinline int __bchfs_fallocate(struct bch_inode_info *inode, int mode,
u64 start_sector, u64 end_sector)
{
struct bch_fs *c = inode->v.i_sb->s_fs_info;
@ -704,7 +711,7 @@ bkey_err:
return ret;
}
static long bchfs_fallocate(struct bch_inode_info *inode, int mode,
static noinline long bchfs_fallocate(struct bch_inode_info *inode, int mode,
loff_t offset, loff_t len)
{
struct bch_fs *c = inode->v.i_sb->s_fs_info;
@ -860,9 +867,6 @@ loff_t bch2_remap_file_range(struct file *file_src, loff_t pos_src,
if (remap_flags & ~(REMAP_FILE_DEDUP|REMAP_FILE_ADVISORY))
return -EINVAL;
if (remap_flags & REMAP_FILE_DEDUP)
return -EOPNOTSUPP;
if ((pos_src & (block_bytes(c) - 1)) ||
(pos_dst & (block_bytes(c) - 1)))
return -EINVAL;
@ -895,7 +899,8 @@ loff_t bch2_remap_file_range(struct file *file_src, loff_t pos_src,
if (ret)
goto err;
file_update_time(file_dst);
if (!(remap_flags & REMAP_FILE_DEDUP))
file_update_time(file_dst);
bch2_mark_pagecache_unallocated(src, pos_src >> 9,
(pos_src + aligned_len) >> 9);

80
fs/bcachefs/fs-ioctl.c
View File

@ -272,6 +272,70 @@ err1:
return ret;
}
static int bch2_ioc_getversion(struct bch_inode_info *inode, u32 __user *arg)
{
return put_user(inode->v.i_generation, arg);
}
static int bch2_ioc_getlabel(struct bch_fs *c, char __user *user_label)
{
int ret;
size_t len;
char label[BCH_SB_LABEL_SIZE];
BUILD_BUG_ON(BCH_SB_LABEL_SIZE >= FSLABEL_MAX);
mutex_lock(&c->sb_lock);
memcpy(label, c->disk_sb.sb->label, BCH_SB_LABEL_SIZE);
mutex_unlock(&c->sb_lock);
len = strnlen(label, BCH_SB_LABEL_SIZE);
if (len == BCH_SB_LABEL_SIZE) {
bch_warn(c,
"label is too long, return the first %zu bytes",
--len);
}
ret = copy_to_user(user_label, label, len);
return ret ? -EFAULT : 0;
}
static int bch2_ioc_setlabel(struct bch_fs *c,
struct file *file,
struct bch_inode_info *inode,
const char __user *user_label)
{
int ret;
char label[BCH_SB_LABEL_SIZE];
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (copy_from_user(label, user_label, sizeof(label)))
return -EFAULT;
if (strnlen(label, BCH_SB_LABEL_SIZE) == BCH_SB_LABEL_SIZE) {
bch_err(c,
"unable to set label with more than %d bytes",
BCH_SB_LABEL_SIZE - 1);
return -EINVAL;
}
ret = mnt_want_write_file(file);
if (ret)
return ret;
mutex_lock(&c->sb_lock);
strscpy(c->disk_sb.sb->label, label, BCH_SB_LABEL_SIZE);
mutex_unlock(&c->sb_lock);
ret = bch2_write_super(c);
mnt_drop_write_file(file);
return ret;
}
static int bch2_ioc_goingdown(struct bch_fs *c, u32 __user *arg)
{
u32 flags;
@ -499,13 +563,21 @@ long bch2_fs_file_ioctl(struct file *file, unsigned cmd, unsigned long arg)
break;
case FS_IOC_GETVERSION:
ret = -ENOTTY;
ret = bch2_ioc_getversion(inode, (u32 __user *) arg);
break;
case FS_IOC_SETVERSION:
ret = -ENOTTY;
break;
case FS_IOC_GETFSLABEL:
ret = bch2_ioc_getlabel(c, (void __user *) arg);
break;
case FS_IOC_SETFSLABEL:
ret = bch2_ioc_setlabel(c, file, inode, (const void __user *) arg);
break;
case FS_IOC_GOINGDOWN:
ret = bch2_ioc_goingdown(c, (u32 __user *) arg);
break;
@ -547,6 +619,12 @@ long bch2_compat_fs_ioctl(struct file *file, unsigned cmd, unsigned long arg)
case FS_IOC32_SETFLAGS:
cmd = FS_IOC_SETFLAGS;
break;
case FS_IOC32_GETVERSION:
cmd = FS_IOC_GETVERSION;
break;
case FS_IOC_GETFSLABEL:
case FS_IOC_SETFSLABEL:
break;
default:
return -ENOIOCTLCMD;
}

209
fs/bcachefs/fs.c
View File

@ -26,11 +26,13 @@
#include "snapshot.h"
#include "super.h"
#include "xattr.h"
#include "trace.h"
#include <linux/aio.h>
#include <linux/backing-dev.h>
#include <linux/exportfs.h>
#include <linux/fiemap.h>
#include <linux/fs_context.h>
#include <linux/module.h>
#include <linux/pagemap.h>
#include <linux/posix_acl.h>
@ -56,9 +58,7 @@ void bch2_inode_update_after_write(struct btree_trans *trans,
BUG_ON(bi->bi_inum != inode->v.i_ino);
bch2_assert_pos_locked(trans, BTREE_ID_inodes,
POS(0, bi->bi_inum),
c->opts.inodes_use_key_cache);
bch2_assert_pos_locked(trans, BTREE_ID_inodes, POS(0, bi->bi_inum));
set_nlink(&inode->v, bch2_inode_nlink_get(bi));
i_uid_write(&inode->v, bi->bi_uid);
@ -516,11 +516,11 @@ static int __bch2_link(struct bch_fs *c,
struct bch_inode_info *dir,
struct dentry *dentry)
{
struct btree_trans *trans = bch2_trans_get(c);
struct bch_inode_unpacked dir_u, inode_u;
int ret;
mutex_lock(&inode->ei_update_lock);
struct btree_trans *trans = bch2_trans_get(c);
ret = commit_do(trans, NULL, NULL, 0,
bch2_link_trans(trans,
@ -567,11 +567,12 @@ int __bch2_unlink(struct inode *vdir, struct dentry *dentry,
struct bch_inode_info *dir = to_bch_ei(vdir);
struct bch_inode_info *inode = to_bch_ei(dentry->d_inode);
struct bch_inode_unpacked dir_u, inode_u;
struct btree_trans *trans = bch2_trans_get(c);
int ret;
bch2_lock_inodes(INODE_UPDATE_LOCK, dir, inode);
struct btree_trans *trans = bch2_trans_get(c);
ret = commit_do(trans, NULL, NULL,
BCH_TRANS_COMMIT_no_enospc,
bch2_unlink_trans(trans,
@ -594,8 +595,8 @@ int __bch2_unlink(struct inode *vdir, struct dentry *dentry,
set_nlink(&inode->v, 0);
}
err:
bch2_unlock_inodes(INODE_UPDATE_LOCK, dir, inode);
bch2_trans_put(trans);
bch2_unlock_inodes(INODE_UPDATE_LOCK, dir, inode);
return ret;
}
@ -680,14 +681,14 @@ static int bch2_rename2(struct mnt_idmap *idmap,
return ret;
}
trans = bch2_trans_get(c);
bch2_lock_inodes(INODE_UPDATE_LOCK,
src_dir,
dst_dir,
src_inode,
dst_inode);
trans = bch2_trans_get(c);
ret = bch2_subvol_is_ro_trans(trans, src_dir->ei_subvol) ?:
bch2_subvol_is_ro_trans(trans, dst_dir->ei_subvol);
if (ret)
@ -893,6 +894,16 @@ static int bch2_getattr(struct mnt_idmap *idmap,
stat->subvol = inode->ei_subvol;
stat->result_mask |= STATX_SUBVOL;
if ((request_mask & STATX_DIOALIGN) && S_ISREG(inode->v.i_mode)) {
stat->result_mask |= STATX_DIOALIGN;
/*
* this is incorrect; we should be tracking this in superblock,
* and checking the alignment of open devices
*/
stat->dio_mem_align = SECTOR_SIZE;
stat->dio_offset_align = block_bytes(c);
}
if (request_mask & STATX_BTIME) {
stat->result_mask |= STATX_BTIME;
stat->btime = bch2_time_to_timespec(c, inode->ei_inode.bi_otime);
@ -1694,6 +1705,8 @@ static int bch2_sync_fs(struct super_block *sb, int wait)
struct bch_fs *c = sb->s_fs_info;
int ret;
trace_bch2_sync_fs(sb, wait);
if (c->opts.journal_flush_disabled)
return 0;
@ -1722,15 +1735,11 @@ static struct bch_fs *bch2_path_to_fs(const char *path)
return c ?: ERR_PTR(-ENOENT);
}
static int bch2_remount(struct super_block *sb, int *flags, char *data)
static int bch2_remount(struct super_block *sb, int *flags,
struct bch_opts opts)
{
struct bch_fs *c = sb->s_fs_info;
struct bch_opts opts = bch2_opts_empty();
int ret;
ret = bch2_parse_mount_opts(c, &opts, data);
if (ret)
goto err;
int ret = 0;
opt_set(opts, read_only, (*flags & SB_RDONLY) != 0);
@ -1790,7 +1799,8 @@ static int bch2_show_options(struct seq_file *seq, struct dentry *root)
const struct bch_option *opt = &bch2_opt_table[i];
u64 v = bch2_opt_get_by_id(&c->opts, i);
if (!(opt->flags & OPT_MOUNT))
if ((opt->flags & OPT_HIDDEN) ||
!(opt->flags & OPT_MOUNT))
continue;
if (v == bch2_opt_get_by_id(&bch2_opts_default, i))
@ -1857,7 +1867,6 @@ static const struct super_operations bch_super_operations = {
.statfs = bch2_statfs,
.show_devname = bch2_show_devname,
.show_options = bch2_show_options,
.remount_fs = bch2_remount,
.put_super = bch2_put_super,
.freeze_fs = bch2_freeze,
.unfreeze_fs = bch2_unfreeze,
@ -1890,76 +1899,63 @@ static int bch2_test_super(struct super_block *s, void *data)
return true;
}
static struct dentry *bch2_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *data)
static int bch2_fs_get_tree(struct fs_context *fc)
{
struct bch_fs *c;
struct super_block *sb;
struct inode *vinode;
struct bch_opts opts = bch2_opts_empty();
struct bch2_opts_parse *opts_parse = fc->fs_private;
struct bch_opts opts = opts_parse->opts;
darray_str devs;
darray_fs devs_to_fs = {};
int ret;
opt_set(opts, read_only, (flags & SB_RDONLY) != 0);
opt_set(opts, read_only, (fc->sb_flags & SB_RDONLY) != 0);
opt_set(opts, nostart, true);
ret = bch2_parse_mount_opts(NULL, &opts, data);
if (ret) {
ret = bch2_err_class(ret);
return ERR_PTR(ret);
}
if (!fc->source || strlen(fc->source) == 0)
return -EINVAL;
if (!dev_name || strlen(dev_name) == 0)
return ERR_PTR(-EINVAL);
darray_str devs;
ret = bch2_split_devs(dev_name, &devs);
ret = bch2_split_devs(fc->source, &devs);
if (ret)
return ERR_PTR(ret);
return ret;
darray_fs devs_to_fs = {};
darray_for_each(devs, i) {
ret = darray_push(&devs_to_fs, bch2_path_to_fs(*i));
if (ret) {
sb = ERR_PTR(ret);
goto got_sb;
}
if (ret)
goto err;
}
sb = sget(fs_type, bch2_test_super, bch2_noset_super, flags|SB_NOSEC, &devs_to_fs);
sb = sget(fc->fs_type, bch2_test_super, bch2_noset_super, fc->sb_flags|SB_NOSEC, &devs_to_fs);
if (!IS_ERR(sb))
goto got_sb;
c = bch2_fs_open(devs.data, devs.nr, opts);
if (IS_ERR(c)) {
sb = ERR_CAST(c);
goto got_sb;
}
ret = PTR_ERR_OR_ZERO(c);
if (ret)
goto err;
/* Some options can't be parsed until after the fs is started: */
ret = bch2_parse_mount_opts(c, &opts, data);
if (ret) {
bch2_fs_stop(c);
sb = ERR_PTR(ret);
goto got_sb;
}
opts = bch2_opts_empty();
ret = bch2_parse_mount_opts(c, &opts, NULL, opts_parse->parse_later.buf);
if (ret)
goto err_stop_fs;
bch2_opts_apply(&c->opts, opts);
sb = sget(fs_type, NULL, bch2_set_super, flags|SB_NOSEC, c);
if (IS_ERR(sb))
bch2_fs_stop(c);
ret = bch2_fs_start(c);
if (ret)
goto err_stop_fs;
sb = sget(fc->fs_type, NULL, bch2_set_super, fc->sb_flags|SB_NOSEC, c);
ret = PTR_ERR_OR_ZERO(sb);
if (ret)
goto err_stop_fs;
got_sb:
darray_exit(&devs_to_fs);
bch2_darray_str_exit(&devs);
if (IS_ERR(sb)) {
ret = PTR_ERR(sb);
goto err;
}
c = sb->s_fs_info;
if (sb->s_root) {
if ((flags ^ sb->s_flags) & SB_RDONLY) {
if ((fc->sb_flags ^ sb->s_flags) & SB_RDONLY) {
ret = -EBUSY;
goto err_put_super;
}
@ -2025,12 +2021,10 @@ got_sb:
sb->s_flags |= SB_ACTIVE;
out:
return dget(sb->s_root);
err_put_super:
__bch2_fs_stop(c);
deactivate_locked_super(sb);
fc->root = dget(sb->s_root);
err:
darray_exit(&devs_to_fs);
bch2_darray_str_exit(&devs);
if (ret)
pr_err("error: %s", bch2_err_str(ret));
/*
@ -2041,7 +2035,16 @@ err:
*/
if (bch2_err_matches(ret, EROFS) && ret != -EROFS)
ret = -EIO;
return ERR_PTR(bch2_err_class(ret));
return bch2_err_class(ret);
err_stop_fs:
bch2_fs_stop(c);
goto err;
err_put_super:
__bch2_fs_stop(c);
deactivate_locked_super(sb);
goto err;
}
static void bch2_kill_sb(struct super_block *sb)
@ -2052,12 +2055,76 @@ static void bch2_kill_sb(struct super_block *sb)
bch2_fs_free(c);
}
static void bch2_fs_context_free(struct fs_context *fc)
{
struct bch2_opts_parse *opts = fc->fs_private;
if (opts) {
printbuf_exit(&opts->parse_later);
kfree(opts);
}
}
static int bch2_fs_parse_param(struct fs_context *fc,
struct fs_parameter *param)
{
/*
* the "source" param, i.e., the name of the device(s) to mount,
* is handled by the VFS layer.
*/
if (!strcmp(param->key, "source"))
return -ENOPARAM;
struct bch2_opts_parse *opts = fc->fs_private;
struct bch_fs *c = NULL;
/* for reconfigure, we already have a struct bch_fs */
if (fc->root)
c = fc->root->d_sb->s_fs_info;
int ret = bch2_parse_one_mount_opt(c, &opts->opts,
&opts->parse_later, param->key,
param->string);
return bch2_err_class(ret);
}
static int bch2_fs_reconfigure(struct fs_context *fc)
{
struct super_block *sb = fc->root->d_sb;
struct bch2_opts_parse *opts = fc->fs_private;
return bch2_remount(sb, &fc->sb_flags, opts->opts);
}
static const struct fs_context_operations bch2_context_ops = {
.free = bch2_fs_context_free,
.parse_param = bch2_fs_parse_param,
.get_tree = bch2_fs_get_tree,
.reconfigure = bch2_fs_reconfigure,
};
static int bch2_init_fs_context(struct fs_context *fc)
{
struct bch2_opts_parse *opts = kzalloc(sizeof(*opts), GFP_KERNEL);
if (!opts)
return -ENOMEM;
opts->parse_later = PRINTBUF;
fc->ops = &bch2_context_ops;
fc->fs_private = opts;
return 0;
}
static struct file_system_type bcache_fs_type = {
.owner = THIS_MODULE,
.name = "bcachefs",
.mount = bch2_mount,
.kill_sb = bch2_kill_sb,
.fs_flags = FS_REQUIRES_DEV,
.owner = THIS_MODULE,
.name = "bcachefs",
.init_fs_context = bch2_init_fs_context,
.kill_sb = bch2_kill_sb,
.fs_flags = FS_REQUIRES_DEV,
};
MODULE_ALIAS_FS("bcachefs");

280
fs/bcachefs/fsck.c
View File

@ -455,33 +455,44 @@ static int reconstruct_subvol(struct btree_trans *trans, u32 snapshotid, u32 sub
return 0;
}
static int reconstruct_inode(struct btree_trans *trans, u32 snapshot, u64 inum, u64 size, unsigned mode)
static int reconstruct_inode(struct btree_trans *trans, enum btree_id btree, u32 snapshot, u64 inum)
{
struct bch_fs *c = trans->c;
struct bch_inode_unpacked new_inode;
unsigned i_mode = S_IFREG;
u64 i_size = 0;
switch (btree) {
case BTREE_ID_extents: {
struct btree_iter iter = {};
bch2_trans_iter_init(trans, &iter, BTREE_ID_extents, SPOS(inum, U64_MAX, snapshot), 0);
struct bkey_s_c k = bch2_btree_iter_peek_prev(&iter);
bch2_trans_iter_exit(trans, &iter);
int ret = bkey_err(k);
if (ret)
return ret;
i_size = k.k->p.offset << 9;
break;
}
case BTREE_ID_dirents:
i_mode = S_IFDIR;
break;
case BTREE_ID_xattrs:
break;
default:
BUG();
}
struct bch_inode_unpacked new_inode;
bch2_inode_init_early(c, &new_inode);
bch2_inode_init_late(&new_inode, bch2_current_time(c), 0, 0, mode|0755, 0, NULL);
new_inode.bi_size = size;
bch2_inode_init_late(&new_inode, bch2_current_time(c), 0, 0, i_mode|0600, 0, NULL);
new_inode.bi_size = i_size;
new_inode.bi_inum = inum;
return __bch2_fsck_write_inode(trans, &new_inode, snapshot);
}
static int reconstruct_reg_inode(struct btree_trans *trans, u32 snapshot, u64 inum)
{
struct btree_iter iter = {};
bch2_trans_iter_init(trans, &iter, BTREE_ID_extents, SPOS(inum, U64_MAX, snapshot), 0);
struct bkey_s_c k = bch2_btree_iter_peek_prev(&iter);
bch2_trans_iter_exit(trans, &iter);
int ret = bkey_err(k);
if (ret)
return ret;
return reconstruct_inode(trans, snapshot, inum, k.k->p.offset << 9, S_IFREG);
}
struct snapshots_seen {
struct bpos pos;
snapshot_id_list ids;
@ -824,8 +835,8 @@ static int hash_check_key(struct btree_trans *trans,
break;
if (fsck_err_on(k.k->type == desc.key_type &&
!desc.cmp_bkey(k, hash_k), c,
hash_table_key_duplicate,
!desc.cmp_bkey(k, hash_k),
trans, hash_table_key_duplicate,
"duplicate hash table keys:\n%s",
(printbuf_reset(&buf),
bch2_bkey_val_to_text(&buf, c, hash_k),
@ -844,7 +855,7 @@ out:
printbuf_exit(&buf);
return ret;
bad_hash:
if (fsck_err(c, hash_table_key_wrong_offset,
if (fsck_err(trans, hash_table_key_wrong_offset,
"hash table key at wrong offset: btree %s inode %llu offset %llu, hashed to %llu\n%s",
bch2_btree_id_str(desc.btree_id), hash_k.k->p.inode, hash_k.k->p.offset, hash,
(printbuf_reset(&buf),
@ -919,11 +930,11 @@ static int check_inode_dirent_inode(struct btree_trans *trans, struct bkey_s_c i
return ret;
if (fsck_err_on(ret,
c, inode_points_to_missing_dirent,
trans, inode_points_to_missing_dirent,
"inode points to missing dirent\n%s",
(bch2_bkey_val_to_text(&buf, c, inode_k), buf.buf)) ||
fsck_err_on(!ret && !dirent_points_to_inode(d, inode),
c, inode_points_to_wrong_dirent,
trans, inode_points_to_wrong_dirent,
"inode points to dirent that does not point back:\n%s",
(bch2_bkey_val_to_text(&buf, c, inode_k),
prt_newline(&buf),
@ -986,7 +997,7 @@ static int check_inode(struct btree_trans *trans,
if (fsck_err_on(prev->bi_hash_seed != u.bi_hash_seed ||
inode_d_type(prev) != inode_d_type(&u),
c, inode_snapshot_mismatch,
trans, inode_snapshot_mismatch,
"inodes in different snapshots don't match")) {
bch_err(c, "repair not implemented yet");
return -BCH_ERR_fsck_repair_unimplemented;
@ -1018,7 +1029,8 @@ static int check_inode(struct btree_trans *trans,
if (ret < 0)
return ret;
fsck_err_on(!ret, c, unlinked_inode_not_on_deleted_list,
fsck_err_on(!ret,
trans, unlinked_inode_not_on_deleted_list,
"inode %llu:%u unlinked, but not on deleted list",
u.bi_inum, k.k->p.snapshot);
ret = 0;
@ -1026,7 +1038,7 @@ static int check_inode(struct btree_trans *trans,
if (u.bi_flags & BCH_INODE_unlinked &&
(!c->sb.clean ||
fsck_err(c, inode_unlinked_but_clean,
fsck_err(trans, inode_unlinked_but_clean,
"filesystem marked clean, but inode %llu unlinked",
u.bi_inum))) {
ret = bch2_inode_rm_snapshot(trans, u.bi_inum, iter->pos.snapshot);
@ -1036,7 +1048,7 @@ static int check_inode(struct btree_trans *trans,
if (u.bi_flags & BCH_INODE_i_size_dirty &&
(!c->sb.clean ||
fsck_err(c, inode_i_size_dirty_but_clean,
fsck_err(trans, inode_i_size_dirty_but_clean,
"filesystem marked clean, but inode %llu has i_size dirty",
u.bi_inum))) {
bch_verbose(c, "truncating inode %llu", u.bi_inum);
@ -1066,7 +1078,7 @@ static int check_inode(struct btree_trans *trans,
if (u.bi_flags & BCH_INODE_i_sectors_dirty &&
(!c->sb.clean ||
fsck_err(c, inode_i_sectors_dirty_but_clean,
fsck_err(trans, inode_i_sectors_dirty_but_clean,
"filesystem marked clean, but inode %llu has i_sectors dirty",
u.bi_inum))) {
s64 sectors;
@ -1101,7 +1113,7 @@ static int check_inode(struct btree_trans *trans,
if (fsck_err_on(u.bi_parent_subvol &&
(u.bi_subvol == 0 ||
u.bi_subvol == BCACHEFS_ROOT_SUBVOL),
c, inode_bi_parent_nonzero,
trans, inode_bi_parent_nonzero,
"inode %llu:%u has subvol %u but nonzero parent subvol %u",
u.bi_inum, k.k->p.snapshot, u.bi_subvol, u.bi_parent_subvol)) {
u.bi_parent_subvol = 0;
@ -1121,13 +1133,13 @@ static int check_inode(struct btree_trans *trans,
}
if (fsck_err_on(ret,
c, inode_bi_subvol_missing,
trans, inode_bi_subvol_missing,
"inode %llu:%u bi_subvol points to missing subvolume %u",
u.bi_inum, k.k->p.snapshot, u.bi_subvol) ||
fsck_err_on(le64_to_cpu(s.inode) != u.bi_inum ||
!bch2_snapshot_is_ancestor(c, le32_to_cpu(s.snapshot),
k.k->p.snapshot),
c, inode_bi_subvol_wrong,
trans, inode_bi_subvol_wrong,
"inode %llu:%u points to subvol %u, but subvol points to %llu:%u",
u.bi_inum, k.k->p.snapshot, u.bi_subvol,
le64_to_cpu(s.inode),
@ -1170,6 +1182,71 @@ int bch2_check_inodes(struct bch_fs *c)
return ret;
}
static inline bool btree_matches_i_mode(enum btree_id btree, unsigned mode)
{
switch (btree) {
case BTREE_ID_extents:
return S_ISREG(mode) || S_ISLNK(mode);
case BTREE_ID_dirents:
return S_ISDIR(mode);
case BTREE_ID_xattrs:
return true;
default:
BUG();
}
}
static int check_key_has_inode(struct btree_trans *trans,
struct btree_iter *iter,
struct inode_walker *inode,
struct inode_walker_entry *i,
struct bkey_s_c k)
{
struct bch_fs *c = trans->c;
struct printbuf buf = PRINTBUF;
int ret = PTR_ERR_OR_ZERO(i);
if (ret)
return ret;
if (k.k->type == KEY_TYPE_whiteout)
goto out;
if (!i && (c->sb.btrees_lost_data & BIT_ULL(BTREE_ID_inodes))) {
ret = reconstruct_inode(trans, iter->btree_id, k.k->p.snapshot, k.k->p.inode) ?:
bch2_trans_commit(trans, NULL, NULL, BCH_TRANS_COMMIT_no_enospc);
if (ret)
goto err;
inode->last_pos.inode--;
ret = -BCH_ERR_transaction_restart_nested;
goto err;
}
if (fsck_err_on(!i,
trans, key_in_missing_inode,
"key in missing inode:\n %s",
(printbuf_reset(&buf),
bch2_bkey_val_to_text(&buf, c, k), buf.buf)))
goto delete;
if (fsck_err_on(i && !btree_matches_i_mode(iter->btree_id, i->inode.bi_mode),
trans, key_in_wrong_inode_type,
"key for wrong inode mode %o:\n %s",
i->inode.bi_mode,
(printbuf_reset(&buf),
bch2_bkey_val_to_text(&buf, c, k), buf.buf)))
goto delete;
out:
err:
fsck_err:
printbuf_exit(&buf);
bch_err_fn(c, ret);
return ret;
delete:
ret = bch2_btree_delete_at(trans, iter, BTREE_UPDATE_internal_snapshot_node);
goto out;
}
static int check_i_sectors_notnested(struct btree_trans *trans, struct inode_walker *w)
{
struct bch_fs *c = trans->c;
@ -1192,7 +1269,7 @@ static int check_i_sectors_notnested(struct btree_trans *trans, struct inode_wal
}
if (fsck_err_on(!(i->inode.bi_flags & BCH_INODE_i_sectors_dirty),
c, inode_i_sectors_wrong,
trans, inode_i_sectors_wrong,
"inode %llu:%u has incorrect i_sectors: got %llu, should be %llu",
w->last_pos.inode, i->snapshot,
i->inode.bi_sectors, i->count)) {
@ -1340,7 +1417,7 @@ static int overlapping_extents_found(struct btree_trans *trans,
prt_printf(&buf, "\n overwriting %s extent",
pos1.snapshot >= pos2.p.snapshot ? "first" : "second");
if (fsck_err(c, extent_overlapping,
if (fsck_err(trans, extent_overlapping,
"overlapping extents%s", buf.buf)) {
struct btree_iter *old_iter = &iter1;
struct disk_reservation res = { 0 };
@ -1476,43 +1553,20 @@ static int check_extent(struct btree_trans *trans, struct btree_iter *iter,
goto err;
}
ret = snapshots_seen_update(c, s, iter->btree_id, k.k->p);
if (ret)
goto err;
i = walk_inode(trans, inode, k);
ret = PTR_ERR_OR_ZERO(i);
if (ret)
goto err;
ret = snapshots_seen_update(c, s, iter->btree_id, k.k->p);
ret = check_key_has_inode(trans, iter, inode, i, k);
if (ret)
goto err;
if (k.k->type != KEY_TYPE_whiteout) {
if (!i && (c->sb.btrees_lost_data & BIT_ULL(BTREE_ID_inodes))) {
ret = reconstruct_reg_inode(trans, k.k->p.snapshot, k.k->p.inode) ?:
bch2_trans_commit(trans, NULL, NULL, BCH_TRANS_COMMIT_no_enospc);
if (ret)
goto err;
inode->last_pos.inode--;
ret = -BCH_ERR_transaction_restart_nested;
goto err;
}
if (fsck_err_on(!i, c, extent_in_missing_inode,
"extent in missing inode:\n %s",
(printbuf_reset(&buf),
bch2_bkey_val_to_text(&buf, c, k), buf.buf)))
goto delete;
if (fsck_err_on(i &&
!S_ISREG(i->inode.bi_mode) &&
!S_ISLNK(i->inode.bi_mode),
c, extent_in_non_reg_inode,
"extent in non regular inode mode %o:\n %s",
i->inode.bi_mode,
(printbuf_reset(&buf),
bch2_bkey_val_to_text(&buf, c, k), buf.buf)))
goto delete;
ret = check_overlapping_extents(trans, s, extent_ends, k, iter,
&inode->recalculate_sums);
if (ret)
@ -1525,7 +1579,7 @@ static int check_extent(struct btree_trans *trans, struct btree_iter *iter,
* didn't have one, iterate over all inodes:
*/
if (!i)
i = inode->inodes.data + inode->inodes.nr - 1;
i = &darray_last(inode->inodes);
for (;
inode->inodes.data && i >= inode->inodes.data;
@ -1538,7 +1592,7 @@ static int check_extent(struct btree_trans *trans, struct btree_iter *iter,
if (fsck_err_on(!(i->inode.bi_flags & BCH_INODE_i_size_dirty) &&
k.k->p.offset > round_up(i->inode.bi_size, block_bytes(c)) >> 9 &&
!bkey_extent_is_reservation(k),
c, extent_past_end_of_inode,
trans, extent_past_end_of_inode,
"extent type past end of inode %llu:%u, i_size %llu\n %s",
i->inode.bi_inum, i->snapshot, i->inode.bi_size,
(bch2_bkey_val_to_text(&buf, c, k), buf.buf))) {
@ -1574,9 +1628,6 @@ fsck_err:
printbuf_exit(&buf);
bch_err_fn(c, ret);
return ret;
delete:
ret = bch2_btree_delete_at(trans, iter, BTREE_UPDATE_internal_snapshot_node);
goto out;
}
/*
@ -1656,7 +1707,7 @@ static int check_subdir_count_notnested(struct btree_trans *trans, struct inode_
}
if (fsck_err_on(i->inode.bi_nlink != i->count,
c, inode_dir_wrong_nlink,
trans, inode_dir_wrong_nlink,
"directory %llu:%u with wrong i_nlink: got %u, should be %llu",
w->last_pos.inode, i->snapshot, i->inode.bi_nlink, i->count)) {
i->inode.bi_nlink = i->count;
@ -1692,7 +1743,7 @@ static int check_dirent_inode_dirent(struct btree_trans *trans,
return 0;
if (bch2_inode_should_have_bp(target) &&
!fsck_err(c, inode_wrong_backpointer,
!fsck_err(trans, inode_wrong_backpointer,
"dirent points to inode that does not point back:\n %s",
(bch2_bkey_val_to_text(&buf, c, d.s_c),
prt_printf(&buf, "\n "),
@ -1718,7 +1769,7 @@ static int check_dirent_inode_dirent(struct btree_trans *trans,
ret = 0;
if (fsck_err_on(!backpointer_exists,
c, inode_wrong_backpointer,
trans, inode_wrong_backpointer,
"inode %llu:%u has wrong backpointer:\n"
"got %llu:%llu\n"
"should be %llu:%llu",
@ -1741,7 +1792,7 @@ static int check_dirent_inode_dirent(struct btree_trans *trans,
if (fsck_err_on(backpointer_exists &&
(S_ISDIR(target->bi_mode) ||
target->bi_subvol),
c, inode_dir_multiple_links,
trans, inode_dir_multiple_links,
"%s %llu:%u with multiple links\n%s",
S_ISDIR(target->bi_mode) ? "directory" : "subvolume",
target->bi_inum, target_snapshot, buf.buf)) {
@ -1755,7 +1806,7 @@ static int check_dirent_inode_dirent(struct btree_trans *trans,
* it up, it ignores inodes with nlink 0
*/
if (fsck_err_on(backpointer_exists && !target->bi_nlink,
c, inode_multiple_links_but_nlink_0,
trans, inode_multiple_links_but_nlink_0,
"inode %llu:%u type %s has multiple links but i_nlink 0\n%s",
target->bi_inum, target_snapshot, bch2_d_types[d.v->d_type], buf.buf)) {
target->bi_nlink++;
@ -1791,7 +1842,7 @@ static int check_dirent_target(struct btree_trans *trans,
goto err;
if (fsck_err_on(d.v->d_type != inode_d_type(target),
c, dirent_d_type_wrong,
trans, dirent_d_type_wrong,
"incorrect d_type: got %s, should be %s:\n%s",
bch2_d_type_str(d.v->d_type),
bch2_d_type_str(inode_d_type(target)),
@ -1889,11 +1940,12 @@ static int check_dirent_to_subvol(struct btree_trans *trans, struct btree_iter *
parent_snapshot = d.k->p.snapshot;
}
if (fsck_err_on(ret, c, dirent_to_missing_parent_subvol,
if (fsck_err_on(ret,
trans, dirent_to_missing_parent_subvol,
"dirent parent_subvol points to missing subvolume\n%s",
(bch2_bkey_val_to_text(&buf, c, d.s_c), buf.buf)) ||
fsck_err_on(!ret && !bch2_snapshot_is_ancestor(c, parent_snapshot, d.k->p.snapshot),
c, dirent_not_visible_in_parent_subvol,
trans, dirent_not_visible_in_parent_subvol,
"dirent not visible in parent_subvol (not an ancestor of subvol snap %u)\n%s",
parent_snapshot,
(bch2_bkey_val_to_text(&buf, c, d.s_c), buf.buf))) {
@ -1919,7 +1971,7 @@ static int check_dirent_to_subvol(struct btree_trans *trans, struct btree_iter *
return ret;
if (ret) {
if (fsck_err(c, dirent_to_missing_subvol,
if (fsck_err(trans, dirent_to_missing_subvol,
"dirent points to missing subvolume\n%s",
(bch2_bkey_val_to_text(&buf, c, d.s_c), buf.buf)))
return __remove_dirent(trans, d.k->p);
@ -1928,7 +1980,7 @@ static int check_dirent_to_subvol(struct btree_trans *trans, struct btree_iter *
}
if (fsck_err_on(le32_to_cpu(s.v->fs_path_parent) != parent_subvol,
c, subvol_fs_path_parent_wrong,
trans, subvol_fs_path_parent_wrong,
"subvol with wrong fs_path_parent, should be be %u\n%s",
parent_subvol,
(bch2_bkey_val_to_text(&buf, c, s.s_c), buf.buf))) {
@ -1956,7 +2008,7 @@ static int check_dirent_to_subvol(struct btree_trans *trans, struct btree_iter *
}
if (fsck_err_on(!ret && parent_subvol != subvol_root.bi_parent_subvol,
c, inode_bi_parent_wrong,
trans, inode_bi_parent_wrong,
"subvol root %llu has wrong bi_parent_subvol: got %u, should be %u",
target_inum,
subvol_root.bi_parent_subvol, parent_subvol)) {
@ -2009,49 +2061,21 @@ static int check_dirent(struct btree_trans *trans, struct btree_iter *iter,
goto err;
}
BUG_ON(!btree_iter_path(trans, iter)->should_be_locked);
i = walk_inode(trans, dir, k);
ret = PTR_ERR_OR_ZERO(i);
if (ret < 0)
goto err;
if (dir->first_this_inode && dir->inodes.nr)
*hash_info = bch2_hash_info_init(c, &dir->inodes.data[0].inode);
dir->first_this_inode = false;
if (!i && (c->sb.btrees_lost_data & BIT_ULL(BTREE_ID_inodes))) {
ret = reconstruct_inode(trans, k.k->p.snapshot, k.k->p.inode, 0, S_IFDIR) ?:
bch2_trans_commit(trans, NULL, NULL, BCH_TRANS_COMMIT_no_enospc);
if (ret)
goto err;
dir->last_pos.inode--;
ret = -BCH_ERR_transaction_restart_nested;
ret = check_key_has_inode(trans, iter, dir, i, k);
if (ret)
goto err;
}
if (fsck_err_on(!i, c, dirent_in_missing_dir_inode,
"dirent in nonexisting directory:\n%s",
(printbuf_reset(&buf),
bch2_bkey_val_to_text(&buf, c, k), buf.buf))) {
ret = bch2_btree_delete_at(trans, iter,
BTREE_UPDATE_internal_snapshot_node);
goto out;
}
if (!i)
goto out;
if (fsck_err_on(!S_ISDIR(i->inode.bi_mode),
c, dirent_in_non_dir_inode,
"dirent in non directory inode type %s:\n%s",
bch2_d_type_str(inode_d_type(&i->inode)),
(printbuf_reset(&buf),
bch2_bkey_val_to_text(&buf, c, k), buf.buf))) {
ret = bch2_btree_delete_at(trans, iter, 0);
goto out;
}
if (dir->first_this_inode)
*hash_info = bch2_hash_info_init(c, &i->inode);
dir->first_this_inode = false;
ret = hash_check_key(trans, bch2_dirent_hash_desc, hash_info, iter, k);
if (ret < 0)
@ -2077,7 +2101,7 @@ static int check_dirent(struct btree_trans *trans, struct btree_iter *iter,
goto err;
if (fsck_err_on(!target->inodes.nr,
c, dirent_to_missing_inode,
trans, dirent_to_missing_inode,
"dirent points to missing inode:\n%s",
(printbuf_reset(&buf),
bch2_bkey_val_to_text(&buf, c, k),
@ -2156,20 +2180,18 @@ static int check_xattr(struct btree_trans *trans, struct btree_iter *iter,
if (ret)
return ret;
if (inode->first_this_inode && inode->inodes.nr)
*hash_info = bch2_hash_info_init(c, &inode->inodes.data[0].inode);
inode->first_this_inode = false;
if (fsck_err_on(!i, c, xattr_in_missing_inode,
"xattr for missing inode %llu",
k.k->p.inode))
return bch2_btree_delete_at(trans, iter, 0);
ret = check_key_has_inode(trans, iter, inode, i, k);
if (ret)
return ret;
if (!i)
return 0;
if (inode->first_this_inode)
*hash_info = bch2_hash_info_init(c, &i->inode);
inode->first_this_inode = false;
ret = hash_check_key(trans, bch2_xattr_hash_desc, hash_info, iter, k);
fsck_err:
bch_err_fn(c, ret);
return ret;
}
@ -2207,7 +2229,7 @@ static int check_root_trans(struct btree_trans *trans)
if (ret && !bch2_err_matches(ret, ENOENT))
return ret;
if (mustfix_fsck_err_on(ret, c, root_subvol_missing,
if (mustfix_fsck_err_on(ret, trans, root_subvol_missing,
"root subvol missing")) {
struct bkey_i_subvolume *root_subvol =
bch2_trans_kmalloc(trans, sizeof(*root_subvol));
@ -2233,10 +2255,11 @@ static int check_root_trans(struct btree_trans *trans)
if (ret && !bch2_err_matches(ret, ENOENT))
return ret;
if (mustfix_fsck_err_on(ret, c, root_dir_missing,
if (mustfix_fsck_err_on(ret,
trans, root_dir_missing,
"root directory missing") ||
mustfix_fsck_err_on(!S_ISDIR(root_inode.bi_mode),
c, root_inode_not_dir,
trans, root_inode_not_dir,
"root inode not a directory")) {
bch2_inode_init(c, &root_inode, 0, 0, S_IFDIR|0755,
0, NULL);
@ -2308,7 +2331,7 @@ static int check_subvol_path(struct btree_trans *trans, struct btree_iter *iter,
break;
if (fsck_err_on(!ret,
c, subvol_unreachable,
trans, subvol_unreachable,
"unreachable subvolume %s",
(bch2_bkey_val_to_text(&buf, c, s.s_c),
buf.buf))) {
@ -2333,7 +2356,7 @@ static int check_subvol_path(struct btree_trans *trans, struct btree_iter *iter,
goto err;
if (fsck_err_on(k.k->type != KEY_TYPE_subvolume,
c, subvol_unreachable,
trans, subvol_unreachable,
"unreachable subvolume %s",
(bch2_bkey_val_to_text(&buf, c, s.s_c),
buf.buf))) {
@ -2412,7 +2435,7 @@ static int check_path(struct btree_trans *trans, pathbuf *p, struct bkey_s_c ino
if (bch2_err_matches(ret, ENOENT)) {
ret = 0;
if (fsck_err(c, inode_unreachable,
if (fsck_err(trans, inode_unreachable,
"unreachable inode\n%s",
(printbuf_reset(&buf),
bch2_bkey_val_to_text(&buf, c, inode_k),
@ -2458,7 +2481,7 @@ static int check_path(struct btree_trans *trans, pathbuf *p, struct bkey_s_c ino
pr_err("%llu:%u", i->inum, i->snapshot);
pr_err("%llu:%u", inode.bi_inum, snapshot);
if (fsck_err(c, dir_loop, "directory structure loop")) {
if (fsck_err(trans, dir_loop, "directory structure loop")) {
ret = remove_backpointer(trans, &inode);
bch_err_msg(c, ret, "removing dirent");
if (ret)
@ -2664,7 +2687,6 @@ static int check_nlinks_update_inode(struct btree_trans *trans, struct btree_ite
struct nlink_table *links,
size_t *idx, u64 range_end)
{
struct bch_fs *c = trans->c;
struct bch_inode_unpacked u;
struct nlink *link = &links->d[*idx];
int ret = 0;
@ -2690,7 +2712,7 @@ static int check_nlinks_update_inode(struct btree_trans *trans, struct btree_ite
}
if (fsck_err_on(bch2_inode_nlink_get(&u) != link->count,
c, inode_wrong_nlink,
trans, inode_wrong_nlink,
"inode %llu type %s has wrong i_nlink (%u, should be %u)",
u.bi_inum, bch2_d_types[mode_to_type(u.bi_mode)],
bch2_inode_nlink_get(&u), link->count)) {

60
fs/bcachefs/inode.c
View File

@ -8,6 +8,7 @@
#include "buckets.h"
#include "compress.h"
#include "dirent.h"
#include "disk_accounting.h"
#include "error.h"
#include "extents.h"
#include "extent_update.h"
@ -534,12 +535,13 @@ fsck_err:
static void __bch2_inode_unpacked_to_text(struct printbuf *out,
struct bch_inode_unpacked *inode)
{
prt_printf(out, "\n");
printbuf_indent_add(out, 2);
prt_printf(out, "mode=%o\n", inode->bi_mode);
prt_str(out, "flags=");
prt_bitflags(out, bch2_inode_flag_strs, inode->bi_flags & ((1U << 20) - 1));
prt_printf(out, " (%x)\n", inode->bi_flags);
prt_printf(out, "(%x)\n", inode->bi_flags);
prt_printf(out, "journal_seq=%llu\n", inode->bi_journal_seq);
prt_printf(out, "bi_size=%llu\n", inode->bi_size);
@ -550,6 +552,8 @@ static void __bch2_inode_unpacked_to_text(struct printbuf *out,
prt_printf(out, #_name "=%llu\n", (u64) inode->_name);
BCH_INODE_FIELDS_v3()
#undef x
bch2_printbuf_strip_trailing_newline(out);
printbuf_indent_sub(out, 2);
}
@ -596,39 +600,26 @@ int bch2_trigger_inode(struct btree_trans *trans,
struct bkey_s new,
enum btree_iter_update_trigger_flags flags)
{
s64 nr = (s64) bkey_is_inode(new.k) - (s64) bkey_is_inode(old.k);
if (flags & BTREE_TRIGGER_transactional) {
if (nr) {
int ret = bch2_replicas_deltas_realloc(trans, 0);
if (ret)
return ret;
trans->fs_usage_deltas->nr_inodes += nr;
}
bool old_deleted = bkey_is_deleted_inode(old);
bool new_deleted = bkey_is_deleted_inode(new.s_c);
if (old_deleted != new_deleted) {
int ret = bch2_btree_bit_mod_buffered(trans, BTREE_ID_deleted_inodes,
new.k->p, new_deleted);
if (ret)
return ret;
}
}
if ((flags & BTREE_TRIGGER_atomic) && (flags & BTREE_TRIGGER_insert)) {
BUG_ON(!trans->journal_res.seq);
bkey_s_to_inode_v3(new).v->bi_journal_seq = cpu_to_le64(trans->journal_res.seq);
}
if (flags & BTREE_TRIGGER_gc) {
struct bch_fs *c = trans->c;
s64 nr = bkey_is_inode(new.k) - bkey_is_inode(old.k);
if ((flags & (BTREE_TRIGGER_transactional|BTREE_TRIGGER_gc)) && nr) {
struct disk_accounting_pos acc = { .type = BCH_DISK_ACCOUNTING_nr_inodes };
int ret = bch2_disk_accounting_mod(trans, &acc, &nr, 1, flags & BTREE_TRIGGER_gc);
if (ret)
return ret;
}
percpu_down_read(&c->mark_lock);
this_cpu_add(c->usage_gc->b.nr_inodes, nr);
percpu_up_read(&c->mark_lock);
int deleted_delta = (int) bkey_is_deleted_inode(new.s_c) -
(int) bkey_is_deleted_inode(old);
if ((flags & BTREE_TRIGGER_transactional) && deleted_delta) {
int ret = bch2_btree_bit_mod_buffered(trans, BTREE_ID_deleted_inodes,
new.k->p, deleted_delta > 0);
if (ret)
return ret;
}
return 0;
@ -1096,8 +1087,8 @@ static int may_delete_deleted_inode(struct btree_trans *trans,
return ret;
ret = bkey_is_inode(k.k) ? 0 : -BCH_ERR_ENOENT_inode;
if (fsck_err_on(!bkey_is_inode(k.k), c,
deleted_inode_missing,
if (fsck_err_on(!bkey_is_inode(k.k),
trans, deleted_inode_missing,
"nonexistent inode %llu:%u in deleted_inodes btree",
pos.offset, pos.snapshot))
goto delete;
@ -1109,7 +1100,7 @@ static int may_delete_deleted_inode(struct btree_trans *trans,
if (S_ISDIR(inode.bi_mode)) {
ret = bch2_empty_dir_snapshot(trans, pos.offset, 0, pos.snapshot);
if (fsck_err_on(bch2_err_matches(ret, ENOTEMPTY),
c, deleted_inode_is_dir,
trans, deleted_inode_is_dir,
"non empty directory %llu:%u in deleted_inodes btree",
pos.offset, pos.snapshot))
goto delete;
@ -1117,15 +1108,14 @@ static int may_delete_deleted_inode(struct btree_trans *trans,
goto out;
}
if (fsck_err_on(!(inode.bi_flags & BCH_INODE_unlinked), c,
deleted_inode_not_unlinked,
if (fsck_err_on(!(inode.bi_flags & BCH_INODE_unlinked),
trans, deleted_inode_not_unlinked,
"non-deleted inode %llu:%u in deleted_inodes btree",
pos.offset, pos.snapshot))
goto delete;
if (c->sb.clean &&
!fsck_err(c,
deleted_inode_but_clean,
!fsck_err(trans, deleted_inode_but_clean,
"filesystem marked as clean but have deleted inode %llu:%u",
pos.offset, pos.snapshot)) {
ret = 0;

2
fs/bcachefs/inode.h
View File

@ -88,7 +88,7 @@ struct bkey_inode_buf {
#define x(_name, _bits) + 8 + _bits / 8
u8 _pad[0 + BCH_INODE_FIELDS_v3()];
#undef x
} __packed __aligned(8);
};
void bch2_inode_pack(struct bkey_inode_buf *, const struct bch_inode_unpacked *);
int bch2_inode_unpack(struct bkey_s_c, struct bch_inode_unpacked *);

6
fs/bcachefs/io_misc.c
View File

@ -126,7 +126,11 @@ err_noprint:
if (closure_nr_remaining(&cl) != 1) {
bch2_trans_unlock_long(trans);
closure_sync(&cl);
if (closure_sync_timeout(&cl, HZ * 10)) {
bch2_print_allocator_stuck(c);
closure_sync(&cl);
}
}
return ret;

114
fs/bcachefs/io_read.c
View File

@ -93,21 +93,24 @@ static const struct rhashtable_params bch_promote_params = {
static inline int should_promote(struct bch_fs *c, struct bkey_s_c k,
struct bpos pos,
struct bch_io_opts opts,
unsigned flags)
unsigned flags,
struct bch_io_failures *failed)
{
BUG_ON(!opts.promote_target);
if (!failed) {
BUG_ON(!opts.promote_target);
if (!(flags & BCH_READ_MAY_PROMOTE))
return -BCH_ERR_nopromote_may_not;
if (!(flags & BCH_READ_MAY_PROMOTE))
return -BCH_ERR_nopromote_may_not;
if (bch2_bkey_has_target(c, k, opts.promote_target))
return -BCH_ERR_nopromote_already_promoted;
if (bch2_bkey_has_target(c, k, opts.promote_target))
return -BCH_ERR_nopromote_already_promoted;
if (bkey_extent_is_unwritten(k))
return -BCH_ERR_nopromote_unwritten;
if (bkey_extent_is_unwritten(k))
return -BCH_ERR_nopromote_unwritten;
if (bch2_target_congested(c, opts.promote_target))
return -BCH_ERR_nopromote_congested;
if (bch2_target_congested(c, opts.promote_target))
return -BCH_ERR_nopromote_congested;
}
if (rhashtable_lookup_fast(&c->promote_table, &pos,
bch_promote_params))
@ -164,7 +167,8 @@ static struct promote_op *__promote_alloc(struct btree_trans *trans,
struct extent_ptr_decoded *pick,
struct bch_io_opts opts,
unsigned sectors,
struct bch_read_bio **rbio)
struct bch_read_bio **rbio,
struct bch_io_failures *failed)
{
struct bch_fs *c = trans->c;
struct promote_op *op = NULL;
@ -217,14 +221,28 @@ static struct promote_op *__promote_alloc(struct btree_trans *trans,
bio = &op->write.op.wbio.bio;
bio_init(bio, NULL, bio->bi_inline_vecs, pages, 0);
struct data_update_opts update_opts = {};
if (!failed) {
update_opts.target = opts.promote_target;
update_opts.extra_replicas = 1;
update_opts.write_flags = BCH_WRITE_ALLOC_NOWAIT|BCH_WRITE_CACHED;
} else {
update_opts.target = opts.foreground_target;
struct bkey_ptrs_c ptrs = bch2_bkey_ptrs_c(k);
unsigned i = 0;
bkey_for_each_ptr(ptrs, ptr) {
if (bch2_dev_io_failures(failed, ptr->dev))
update_opts.rewrite_ptrs |= BIT(i);
i++;
}
}
ret = bch2_data_update_init(trans, NULL, NULL, &op->write,
writepoint_hashed((unsigned long) current),
opts,
(struct data_update_opts) {
.target = opts.promote_target,
.extra_replicas = 1,
.write_flags = BCH_WRITE_ALLOC_NOWAIT|BCH_WRITE_CACHED,
},
update_opts,
btree_id, k);
/*
* possible errors: -BCH_ERR_nocow_lock_blocked,
@ -258,10 +276,17 @@ static struct promote_op *promote_alloc(struct btree_trans *trans,
unsigned flags,
struct bch_read_bio **rbio,
bool *bounce,
bool *read_full)
bool *read_full,
struct bch_io_failures *failed)
{
struct bch_fs *c = trans->c;
bool promote_full = *read_full || READ_ONCE(c->promote_whole_extents);
/*
* if failed != NULL we're not actually doing a promote, we're
* recovering from an io/checksum error
*/
bool promote_full = (failed ||
*read_full ||
READ_ONCE(c->promote_whole_extents));
/* data might have to be decompressed in the write path: */
unsigned sectors = promote_full
? max(pick->crc.compressed_size, pick->crc.live_size)
@ -272,7 +297,7 @@ static struct promote_op *promote_alloc(struct btree_trans *trans,
struct promote_op *promote;
int ret;
ret = should_promote(c, k, pos, opts, flags);
ret = should_promote(c, k, pos, opts, flags, failed);
if (ret)
goto nopromote;
@ -280,7 +305,7 @@ static struct promote_op *promote_alloc(struct btree_trans *trans,
k.k->type == KEY_TYPE_reflink_v
? BTREE_ID_reflink
: BTREE_ID_extents,
k, pos, pick, opts, sectors, rbio);
k, pos, pick, opts, sectors, rbio, failed);
ret = PTR_ERR_OR_ZERO(promote);
if (ret)
goto nopromote;
@ -910,9 +935,9 @@ retry_pick:
bounce = true;
}
if (orig->opts.promote_target)
if (orig->opts.promote_target)// || failed)
promote = promote_alloc(trans, iter, k, &pick, orig->opts, flags,
&rbio, &bounce, &read_full);
&rbio, &bounce, &read_full, failed);
if (!read_full) {
EBUG_ON(crc_is_compressed(pick.crc));
@ -1122,34 +1147,27 @@ void __bch2_read(struct bch_fs *c, struct bch_read_bio *rbio,
struct btree_iter iter;
struct bkey_buf sk;
struct bkey_s_c k;
u32 snapshot;
int ret;
BUG_ON(flags & BCH_READ_NODECODE);
bch2_bkey_buf_init(&sk);
retry:
bch2_trans_begin(trans);
iter = (struct btree_iter) { NULL };
ret = bch2_subvolume_get_snapshot(trans, inum.subvol, &snapshot);
if (ret)
goto err;
bch2_trans_iter_init(trans, &iter, BTREE_ID_extents,
SPOS(inum.inum, bvec_iter.bi_sector, snapshot),
POS(inum.inum, bvec_iter.bi_sector),
BTREE_ITER_slots);
while (1) {
unsigned bytes, sectors, offset_into_extent;
enum btree_id data_btree = BTREE_ID_extents;
/*
* read_extent -> io_time_reset may cause a transaction restart
* without returning an error, we need to check for that here:
*/
ret = bch2_trans_relock(trans);
bch2_trans_begin(trans);
u32 snapshot;
ret = bch2_subvolume_get_snapshot(trans, inum.subvol, &snapshot);
if (ret)
break;
goto err;
bch2_btree_iter_set_snapshot(&iter, snapshot);
bch2_btree_iter_set_pos(&iter,
POS(inum.inum, bvec_iter.bi_sector));
@ -1157,7 +1175,7 @@ retry:
k = bch2_btree_iter_peek_slot(&iter);
ret = bkey_err(k);
if (ret)
break;
goto err;
offset_into_extent = iter.pos.offset -
bkey_start_offset(k.k);
@ -1168,7 +1186,7 @@ retry:
ret = bch2_read_indirect_extent(trans, &data_btree,
&offset_into_extent, &sk);
if (ret)
break;
goto err;
k = bkey_i_to_s_c(sk.k);
@ -1188,7 +1206,7 @@ retry:
data_btree, k,
offset_into_extent, failed, flags);
if (ret)
break;
goto err;
if (flags & BCH_READ_LAST_FRAGMENT)
break;
@ -1198,16 +1216,16 @@ retry:
ret = btree_trans_too_many_iters(trans);
if (ret)
goto err;
err:
if (ret &&
!bch2_err_matches(ret, BCH_ERR_transaction_restart) &&
ret != READ_RETRY &&
ret != READ_RETRY_AVOID)
break;
}
err:
bch2_trans_iter_exit(trans, &iter);
if (bch2_err_matches(ret, BCH_ERR_transaction_restart) ||
ret == READ_RETRY ||
ret == READ_RETRY_AVOID)
goto retry;
bch2_trans_put(trans);
bch2_bkey_buf_exit(&sk, c);

36
fs/bcachefs/io_write.c
View File

@ -69,11 +69,10 @@ void bch2_latency_acct(struct bch_dev *ca, u64 submit_time, int rw)
u64 io_latency = time_after64(now, submit_time)
? now - submit_time
: 0;
u64 old, new, v = atomic64_read(latency);
u64 old, new;
old = atomic64_read(latency);
do {
old = v;
/*
* If the io latency was reasonably close to the current
* latency, skip doing the update and atomic operation - most of
@ -84,7 +83,7 @@ void bch2_latency_acct(struct bch_dev *ca, u64 submit_time, int rw)
break;
new = ewma_add(old, io_latency, 5);
} while ((v = atomic64_cmpxchg(latency, old, new)) != old);
} while (!atomic64_try_cmpxchg(latency, &old, new));
bch2_congested_acct(ca, io_latency, now, rw);
@ -555,7 +554,7 @@ out:
err:
keys->top = keys->keys;
op->error = ret;
op->flags |= BCH_WRITE_DONE;
op->flags |= BCH_WRITE_SUBMITTED;
goto out;
}
@ -590,7 +589,7 @@ static CLOSURE_CALLBACK(bch2_write_index)
struct workqueue_struct *wq = index_update_wq(op);
unsigned long flags;
if ((op->flags & BCH_WRITE_DONE) &&
if ((op->flags & BCH_WRITE_SUBMITTED) &&
(op->flags & BCH_WRITE_MOVE))
bch2_bio_free_pages_pool(op->c, &op->wbio.bio);
@ -635,7 +634,7 @@ void bch2_write_point_do_index_updates(struct work_struct *work)
__bch2_write_index(op);
if (!(op->flags & BCH_WRITE_DONE))
if (!(op->flags & BCH_WRITE_SUBMITTED))
__bch2_write(op);
else
bch2_write_done(&op->cl);
@ -1081,7 +1080,10 @@ do_write:
*_dst = dst;
return more;
csum_err:
bch_err(c, "%s writ error: error verifying existing checksum while rewriting existing data (memory corruption?)",
bch_err_inum_offset_ratelimited(c,
op->pos.inode,
op->pos.offset << 9,
"%s write error: error verifying existing checksum while rewriting existing data (memory corruption?)",
op->flags & BCH_WRITE_MOVE ? "move" : "user");
ret = -EIO;
err:
@ -1316,7 +1318,7 @@ retry:
wbio_init(bio)->put_bio = true;
bio->bi_opf = op->wbio.bio.bi_opf;
} else {
op->flags |= BCH_WRITE_DONE;
op->flags |= BCH_WRITE_SUBMITTED;
}
op->pos.offset += bio_sectors(bio);
@ -1330,7 +1332,7 @@ retry:
op->insert_keys.top, true);
bch2_keylist_push(&op->insert_keys);
if (op->flags & BCH_WRITE_DONE)
if (op->flags & BCH_WRITE_SUBMITTED)
break;
bch2_btree_iter_advance(&iter);
}
@ -1345,14 +1347,14 @@ err:
op->pos.inode, op->pos.offset << 9,
"%s: btree lookup error %s", __func__, bch2_err_str(ret));
op->error = ret;
op->flags |= BCH_WRITE_DONE;
op->flags |= BCH_WRITE_SUBMITTED;
}
bch2_trans_put(trans);
darray_exit(&buckets);
/* fallback to cow write path? */
if (!(op->flags & BCH_WRITE_DONE)) {
if (!(op->flags & BCH_WRITE_SUBMITTED)) {
closure_sync(&op->cl);
__bch2_nocow_write_done(op);
op->insert_keys.top = op->insert_keys.keys;
@ -1408,7 +1410,7 @@ static void __bch2_write(struct bch_write_op *op)
if (unlikely(op->opts.nocow && c->opts.nocow_enabled)) {
bch2_nocow_write(op);
if (op->flags & BCH_WRITE_DONE)
if (op->flags & BCH_WRITE_SUBMITTED)
goto out_nofs_restore;
}
again:
@ -1463,7 +1465,7 @@ again:
bch2_alloc_sectors_done_inlined(c, wp);
err:
if (ret <= 0) {
op->flags |= BCH_WRITE_DONE;
op->flags |= BCH_WRITE_SUBMITTED;
if (ret < 0) {
if (!(op->flags & BCH_WRITE_ALLOC_NOWAIT))
@ -1499,7 +1501,7 @@ err:
* once, as that signals backpressure to the caller.
*/
if ((op->flags & BCH_WRITE_SYNC) ||
(!(op->flags & BCH_WRITE_DONE) &&
(!(op->flags & BCH_WRITE_SUBMITTED) &&
!(op->flags & BCH_WRITE_IN_WORKER))) {
if (closure_sync_timeout(&op->cl, HZ * 10)) {
bch2_print_allocator_stuck(c);
@ -1508,7 +1510,7 @@ err:
__bch2_write_index(op);
if (!(op->flags & BCH_WRITE_DONE))
if (!(op->flags & BCH_WRITE_SUBMITTED))
goto again;
bch2_write_done(&op->cl);
} else {
@ -1530,7 +1532,7 @@ static void bch2_write_data_inline(struct bch_write_op *op, unsigned data_len)
memset(&op->failed, 0, sizeof(op->failed));
op->flags |= BCH_WRITE_WROTE_DATA_INLINE;
op->flags |= BCH_WRITE_DONE;
op->flags |= BCH_WRITE_SUBMITTED;
bch2_check_set_feature(op->c, BCH_FEATURE_inline_data);

2
fs/bcachefs/io_write.h
View File

@ -33,7 +33,7 @@ void bch2_submit_wbio_replicas(struct bch_write_bio *, struct bch_fs *,
x(SYNC) \
x(MOVE) \
x(IN_WORKER) \
x(DONE) \
x(SUBMITTED) \
x(IO_ERROR) \
x(CONVERT_UNWRITTEN)

17
fs/bcachefs/journal.c
View File

@ -230,7 +230,6 @@ static void __journal_entry_close(struct journal *j, unsigned closed_val, bool t
struct bch_fs *c = container_of(j, struct bch_fs, journal);
struct journal_buf *buf = journal_cur_buf(j);
union journal_res_state old, new;
u64 v = atomic64_read(&j->reservations.counter);
unsigned sectors;
BUG_ON(closed_val != JOURNAL_ENTRY_CLOSED_VAL &&
@ -238,15 +237,16 @@ static void __journal_entry_close(struct journal *j, unsigned closed_val, bool t
lockdep_assert_held(&j->lock);
old.v = atomic64_read(&j->reservations.counter);
do {
old.v = new.v = v;
new.v = old.v;
new.cur_entry_offset = closed_val;
if (old.cur_entry_offset == JOURNAL_ENTRY_ERROR_VAL ||
old.cur_entry_offset == new.cur_entry_offset)
return;
} while ((v = atomic64_cmpxchg(&j->reservations.counter,
old.v, new.v)) != old.v);
} while (!atomic64_try_cmpxchg(&j->reservations.counter,
&old.v, new.v));
if (!__journal_entry_is_open(old))
return;
@ -353,7 +353,6 @@ static int journal_entry_open(struct journal *j)
((journal_cur_seq(j) + 1) & JOURNAL_BUF_MASK);
union journal_res_state old, new;
int u64s;
u64 v;
lockdep_assert_held(&j->lock);
BUG_ON(journal_entry_is_open(j));
@ -432,9 +431,9 @@ static int journal_entry_open(struct journal *j)
*/
j->cur_entry_u64s = u64s;
v = atomic64_read(&j->reservations.counter);
old.v = atomic64_read(&j->reservations.counter);
do {
old.v = new.v = v;
new.v = old.v;
BUG_ON(old.cur_entry_offset == JOURNAL_ENTRY_ERROR_VAL);
@ -446,8 +445,8 @@ static int journal_entry_open(struct journal *j)
/* Handle any already added entries */
new.cur_entry_offset = le32_to_cpu(buf->data->u64s);
} while ((v = atomic64_cmpxchg(&j->reservations.counter,
old.v, new.v)) != old.v);
} while (!atomic64_try_cmpxchg(&j->reservations.counter,
&old.v, new.v));
if (nr_unwritten_journal_entries(j) == 1)
mod_delayed_work(j->wq,

8
fs/bcachefs/journal.h
View File

@ -327,10 +327,10 @@ static inline int journal_res_get_fast(struct journal *j,
unsigned flags)
{
union journal_res_state old, new;
u64 v = atomic64_read(&j->reservations.counter);
old.v = atomic64_read(&j->reservations.counter);
do {
old.v = new.v = v;
new.v = old.v;
/*
* Check if there is still room in the current journal
@ -356,8 +356,8 @@ static inline int journal_res_get_fast(struct journal *j,
if (flags & JOURNAL_RES_GET_CHECK)
return 1;
} while ((v = atomic64_cmpxchg(&j->reservations.counter,
old.v, new.v)) != old.v);
} while (!atomic64_try_cmpxchg(&j->reservations.counter,
&old.v, new.v));
res->ref = true;
res->idx = old.idx;

27
fs/bcachefs/journal_io.c
View File

@ -724,13 +724,16 @@ static void journal_entry_dev_usage_to_text(struct printbuf *out, struct bch_fs
prt_printf(out, "dev=%u", le32_to_cpu(u->dev));
printbuf_indent_add(out, 2);
for (i = 0; i < nr_types; i++) {
prt_newline(out);
bch2_prt_data_type(out, i);
prt_printf(out, ": buckets=%llu sectors=%llu fragmented=%llu",
le64_to_cpu(u->d[i].buckets),
le64_to_cpu(u->d[i].sectors),
le64_to_cpu(u->d[i].fragmented));
}
printbuf_indent_sub(out, 2);
}
static int journal_entry_log_validate(struct bch_fs *c,
@ -1585,7 +1588,7 @@ static CLOSURE_CALLBACK(journal_write_done)
struct bch_fs *c = container_of(j, struct bch_fs, journal);
struct bch_replicas_padded replicas;
union journal_res_state old, new;
u64 v, seq = le64_to_cpu(w->data->seq);
u64 seq = le64_to_cpu(w->data->seq);
int err = 0;
bch2_time_stats_update(!JSET_NO_FLUSH(w->data)
@ -1644,14 +1647,15 @@ static CLOSURE_CALLBACK(journal_write_done)
if (j->watermark != BCH_WATERMARK_stripe)
journal_reclaim_kick(&c->journal);
v = atomic64_read(&j->reservations.counter);
old.v = atomic64_read(&j->reservations.counter);
do {
old.v = new.v = v;
new.v = old.v;
BUG_ON(journal_state_count(new, new.unwritten_idx));
BUG_ON(new.unwritten_idx != (seq & JOURNAL_BUF_MASK));
new.unwritten_idx++;
} while ((v = atomic64_cmpxchg(&j->reservations.counter, old.v, new.v)) != old.v);
} while (!atomic64_try_cmpxchg(&j->reservations.counter,
&old.v, new.v));
closure_wake_up(&w->wait);
completed = true;
@ -1858,8 +1862,14 @@ static int bch2_journal_write_prep(struct journal *j, struct journal_buf *w)
}
}
if (wb.wb)
bch2_journal_keys_to_write_buffer_end(c, &wb);
if (wb.wb) {
ret = bch2_journal_keys_to_write_buffer_end(c, &wb);
if (ret) {
bch2_fs_fatal_error(c, "error flushing journal keys to btree write buffer: %s",
bch2_err_str(ret));
return ret;
}
}
spin_lock(&c->journal.lock);
w->need_flush_to_write_buffer = false;
@ -2024,8 +2034,9 @@ CLOSURE_CALLBACK(bch2_journal_write)
struct printbuf buf = PRINTBUF;
buf.atomic++;
prt_printf(&buf, bch2_fmt(c, "Unable to allocate journal write: %s"),
bch2_err_str(ret));
prt_printf(&buf, bch2_fmt(c, "Unable to allocate journal write at seq %llu: %s"),
le64_to_cpu(w->data->seq),
bch2_err_str(ret));
__bch2_journal_debug_to_text(&buf, j);
spin_unlock(&j->lock);
bch2_print_string_as_lines(KERN_ERR, buf.buf);

11
fs/bcachefs/journal_reclaim.c
View File

@ -205,6 +205,17 @@ void bch2_journal_space_available(struct journal *j)
j->can_discard = can_discard;
if (nr_online < metadata_replicas_required(c)) {
struct printbuf buf = PRINTBUF;
prt_printf(&buf, "insufficient writeable journal devices available: have %u, need %u\n"
"rw journal devs:", nr_online, metadata_replicas_required(c));
rcu_read_lock();
for_each_member_device_rcu(c, ca, &c->rw_devs[BCH_DATA_journal])
prt_printf(&buf, " %s", ca->name);
rcu_read_unlock();
bch_err(c, "%s", buf.buf);
printbuf_exit(&buf);
ret = JOURNAL_ERR_insufficient_devices;
goto out;
}

8
fs/bcachefs/lru.c
View File

@ -99,7 +99,7 @@ int bch2_lru_check_set(struct btree_trans *trans,
if (ret)
goto err;
if (fsck_err(c, alloc_key_to_missing_lru_entry,
if (fsck_err(trans, alloc_key_to_missing_lru_entry,
"missing %s lru entry\n"
" %s",
bch2_lru_types[lru_type(lru_k)],
@ -133,8 +133,8 @@ static int bch2_check_lru_key(struct btree_trans *trans,
u64 idx;
int ret;
if (fsck_err_on(!bch2_dev_bucket_exists(c, alloc_pos), c,
lru_entry_to_invalid_bucket,
if (fsck_err_on(!bch2_dev_bucket_exists(c, alloc_pos),
trans, lru_entry_to_invalid_bucket,
"lru key points to nonexistent device:bucket %llu:%llu",
alloc_pos.inode, alloc_pos.offset))
return bch2_btree_delete_at(trans, lru_iter, 0);
@ -164,7 +164,7 @@ static int bch2_check_lru_key(struct btree_trans *trans,
goto out;
}
if (fsck_err(c, lru_entry_bad,
if (fsck_err(trans, lru_entry_bad,
"incorrect lru entry: lru %s time %llu\n"
" %s\n"
" for %s",

12
fs/bcachefs/lru.h
View File

@ -24,18 +24,6 @@ static inline struct bpos lru_pos(u16 lru_id, u64 dev_bucket, u64 time)
return pos;
}
#define BCH_LRU_TYPES() \
x(read) \
x(fragmentation)
enum bch_lru_type {
#define x(n) BCH_LRU_##n,
BCH_LRU_TYPES()
#undef x
};
#define BCH_LRU_FRAGMENTATION_START ((1U << 16) - 1)
static inline enum bch_lru_type lru_type(struct bkey_s_c l)
{
u16 lru_id = l.k->p.inode >> 48;

25
fs/bcachefs/lru_format.h Normal file
View File

@ -0,0 +1,25 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHEFS_LRU_FORMAT_H
#define _BCACHEFS_LRU_FORMAT_H
struct bch_lru {
struct bch_val v;
__le64 idx;
} __packed __aligned(8);
#define BCH_LRU_TYPES() \
x(read) \
x(fragmentation)
enum bch_lru_type {
#define x(n) BCH_LRU_##n,
BCH_LRU_TYPES()
#undef x
};
#define BCH_LRU_FRAGMENTATION_START ((1U << 16) - 1)
#define LRU_TIME_BITS 48
#define LRU_TIME_MAX ((1ULL << LRU_TIME_BITS) - 1)
#endif /* _BCACHEFS_LRU_FORMAT_H */

2
fs/bcachefs/move.c
View File

@ -780,7 +780,7 @@ int bch2_evacuate_bucket(struct moving_context *ctxt,
if (!b)
goto next;
unsigned sectors = btree_ptr_sectors_written(&b->key);
unsigned sectors = btree_ptr_sectors_written(bkey_i_to_s_c(&b->key));
ret = bch2_btree_node_rewrite(trans, &iter, b, 0);
bch2_trans_iter_exit(trans, &iter);

11
fs/bcachefs/movinggc.c
View File

@ -290,18 +290,23 @@ unsigned long bch2_copygc_wait_amount(struct bch_fs *c)
void bch2_copygc_wait_to_text(struct printbuf *out, struct bch_fs *c)
{
prt_printf(out, "Currently waiting for: ");
printbuf_tabstop_push(out, 32);
prt_printf(out, "running:\t%u\n", c->copygc_running);
prt_printf(out, "copygc_wait:\t%llu\n", c->copygc_wait);
prt_printf(out, "copygc_wait_at:\t%llu\n", c->copygc_wait_at);
prt_printf(out, "Currently waiting for:\t");
prt_human_readable_u64(out, max(0LL, c->copygc_wait -
atomic64_read(&c->io_clock[WRITE].now)) << 9);
prt_newline(out);
prt_printf(out, "Currently waiting since: ");
prt_printf(out, "Currently waiting since:\t");
prt_human_readable_u64(out, max(0LL,
atomic64_read(&c->io_clock[WRITE].now) -
c->copygc_wait_at) << 9);
prt_newline(out);
prt_printf(out, "Currently calculated wait: ");
prt_printf(out, "Currently calculated wait:\t");
prt_human_readable_u64(out, bch2_copygc_wait_amount(c));
prt_newline(out);
}

120
fs/bcachefs/opts.c
View File

@ -378,6 +378,10 @@ int bch2_opt_parse(struct bch_fs *c,
break;
case BCH_OPT_FN:
ret = opt->fn.parse(c, val, res, err);
if (ret == -BCH_ERR_option_needs_open_fs)
return ret;
if (ret < 0) {
if (err)
prt_printf(err, "%s: parse error",
@ -460,14 +464,81 @@ int bch2_opts_check_may_set(struct bch_fs *c)
return 0;
}
int bch2_parse_one_mount_opt(struct bch_fs *c, struct bch_opts *opts,
struct printbuf *parse_later,
const char *name, const char *val)
{
struct printbuf err = PRINTBUF;
u64 v;
int ret, id;
id = bch2_mount_opt_lookup(name);
/* Check for the form "noopt", negation of a boolean opt: */
if (id < 0 &&
!val &&
!strncmp("no", name, 2)) {
id = bch2_mount_opt_lookup(name + 2);
val = "0";
}
/* Unknown options are ignored: */
if (id < 0)
return 0;
if (!(bch2_opt_table[id].flags & OPT_MOUNT))
goto bad_opt;
if (id == Opt_acl &&
!IS_ENABLED(CONFIG_BCACHEFS_POSIX_ACL))
goto bad_opt;
if ((id == Opt_usrquota ||
id == Opt_grpquota) &&
!IS_ENABLED(CONFIG_BCACHEFS_QUOTA))
goto bad_opt;
ret = bch2_opt_parse(c, &bch2_opt_table[id], val, &v, &err);
if (ret == -BCH_ERR_option_needs_open_fs && parse_later) {
prt_printf(parse_later, "%s=%s,", name, val);
if (parse_later->allocation_failure) {
ret = -ENOMEM;
goto out;
}
ret = 0;
goto out;
}
if (ret < 0)
goto bad_val;
if (opts)
bch2_opt_set_by_id(opts, id, v);
ret = 0;
goto out;
bad_opt:
pr_err("Bad mount option %s", name);
ret = -BCH_ERR_option_name;
goto out;
bad_val:
pr_err("Invalid mount option %s", err.buf);
ret = -BCH_ERR_option_value;
out:
printbuf_exit(&err);
return ret;
}
int bch2_parse_mount_opts(struct bch_fs *c, struct bch_opts *opts,
char *options)
struct printbuf *parse_later, char *options)
{
char *copied_opts, *copied_opts_start;
char *opt, *name, *val;
int ret, id;
struct printbuf err = PRINTBUF;
u64 v;
int ret;
if (!options)
return 0;
@ -488,53 +559,16 @@ int bch2_parse_mount_opts(struct bch_fs *c, struct bch_opts *opts,
name = strsep(&opt, "=");
val = opt;
id = bch2_mount_opt_lookup(name);
/* Check for the form "noopt", negation of a boolean opt: */
if (id < 0 &&
!val &&
!strncmp("no", name, 2)) {
id = bch2_mount_opt_lookup(name + 2);
val = "0";
}
/* Unknown options are ignored: */
if (id < 0)
continue;
if (!(bch2_opt_table[id].flags & OPT_MOUNT))
goto bad_opt;
if (id == Opt_acl &&
!IS_ENABLED(CONFIG_BCACHEFS_POSIX_ACL))
goto bad_opt;
if ((id == Opt_usrquota ||
id == Opt_grpquota) &&
!IS_ENABLED(CONFIG_BCACHEFS_QUOTA))
goto bad_opt;
ret = bch2_opt_parse(c, &bch2_opt_table[id], val, &v, &err);
ret = bch2_parse_one_mount_opt(c, opts, parse_later, name, val);
if (ret < 0)
goto bad_val;
bch2_opt_set_by_id(opts, id, v);
goto out;
}
ret = 0;
goto out;
bad_opt:
pr_err("Bad mount option %s", name);
ret = -BCH_ERR_option_name;
goto out;
bad_val:
pr_err("Invalid mount option %s", err.buf);
ret = -BCH_ERR_option_value;
goto out;
out:
kfree(copied_opts_start);
printbuf_exit(&err);
return ret;
}

15
fs/bcachefs/opts.h
View File

@ -63,6 +63,7 @@ enum opt_flags {
OPT_MUST_BE_POW_2 = (1 << 7), /* Must be power of 2 */
OPT_SB_FIELD_SECTORS = (1 << 8),/* Superblock field is >> 9 of actual value */
OPT_SB_FIELD_ILOG2 = (1 << 9), /* Superblock field is ilog2 of actual value */
OPT_HIDDEN = (1 << 10),
};
enum opt_type {
@ -406,7 +407,7 @@ enum fsck_err_opts {
BCH2_NO_SB_OPT, BCH_SB_SECTOR, \
"offset", "Sector offset of superblock") \
x(read_only, u8, \
OPT_FS|OPT_MOUNT, \
OPT_FS|OPT_MOUNT|OPT_HIDDEN, \
OPT_BOOL(), \
BCH2_NO_SB_OPT, false, \
NULL, NULL) \
@ -488,6 +489,13 @@ struct bch_opts {
#undef x
};
struct bch2_opts_parse {
struct bch_opts opts;
/* to save opts that can't be parsed before the FS is opened: */
struct printbuf parse_later;
};
static const __maybe_unused struct bch_opts bch2_opts_default = {
#define x(_name, _bits, _mode, _type, _sb_opt, _default, ...) \
._name##_defined = true, \
@ -566,7 +574,10 @@ void bch2_opt_to_text(struct printbuf *, struct bch_fs *, struct bch_sb *,
int bch2_opt_check_may_set(struct bch_fs *, int, u64);
int bch2_opts_check_may_set(struct bch_fs *);
int bch2_parse_mount_opts(struct bch_fs *, struct bch_opts *, char *);
int bch2_parse_one_mount_opt(struct bch_fs *, struct bch_opts *,
struct printbuf *, const char *, const char *);
int bch2_parse_mount_opts(struct bch_fs *, struct bch_opts *, struct printbuf *,
char *);
/* inode opts: */

14
fs/bcachefs/printbuf.c
View File

@ -316,6 +316,20 @@ void bch2_prt_newline(struct printbuf *buf)
buf->cur_tabstop = 0;
}
void bch2_printbuf_strip_trailing_newline(struct printbuf *out)
{
for (int p = out->pos - 1; p >= 0; --p) {
if (out->buf[p] == '\n') {
out->pos = p;
break;
}
if (out->buf[p] != ' ')
break;
}
printbuf_nul_terminate_reserved(out);
}
static void __prt_tab(struct printbuf *out)
{
int spaces = max_t(int, 0, cur_tabstop(out) - printbuf_linelen(out));

1
fs/bcachefs/printbuf.h
View File

@ -115,6 +115,7 @@ void bch2_printbuf_indent_add(struct printbuf *, unsigned);
void bch2_printbuf_indent_sub(struct printbuf *, unsigned);
void bch2_prt_newline(struct printbuf *);
void bch2_printbuf_strip_trailing_newline(struct printbuf *);
void bch2_prt_tab(struct printbuf *);
void bch2_prt_tab_rjust(struct printbuf *);

134
fs/bcachefs/recovery.c
View File

@ -10,6 +10,7 @@
#include "btree_io.h"
#include "buckets.h"
#include "dirent.h"
#include "disk_accounting.h"
#include "errcode.h"
#include "error.h"
#include "fs-common.h"
@ -90,6 +91,7 @@ static void bch2_reconstruct_alloc(struct bch_fs *c)
__set_bit_le64(BCH_FSCK_ERR_freespace_hole_missing, ext->errors_silent);
__set_bit_le64(BCH_FSCK_ERR_ptr_to_missing_backpointer, ext->errors_silent);
__set_bit_le64(BCH_FSCK_ERR_lru_entry_bad, ext->errors_silent);
__set_bit_le64(BCH_FSCK_ERR_accounting_mismatch, ext->errors_silent);
c->sb.compat &= ~(1ULL << BCH_COMPAT_alloc_info);
bch2_write_super(c);
@ -134,6 +136,45 @@ static void replay_now_at(struct journal *j, u64 seq)
bch2_journal_pin_put(j, j->replay_journal_seq++);
}
static int bch2_journal_replay_accounting_key(struct btree_trans *trans,
struct journal_key *k)
{
struct btree_iter iter;
bch2_trans_node_iter_init(trans, &iter, k->btree_id, k->k->k.p,
BTREE_MAX_DEPTH, k->level,
BTREE_ITER_intent);
int ret = bch2_btree_iter_traverse(&iter);
if (ret)
goto out;
struct bkey u;
struct bkey_s_c old = bch2_btree_path_peek_slot(btree_iter_path(trans, &iter), &u);
/* Has this delta already been applied to the btree? */
if (bversion_cmp(old.k->version, k->k->k.version) >= 0) {
ret = 0;
goto out;
}
struct bkey_i *new = k->k;
if (old.k->type == KEY_TYPE_accounting) {
new = bch2_bkey_make_mut_noupdate(trans, bkey_i_to_s_c(k->k));
ret = PTR_ERR_OR_ZERO(new);
if (ret)
goto out;
bch2_accounting_accumulate(bkey_i_to_accounting(new),
bkey_s_c_to_accounting(old));
}
trans->journal_res.seq = k->journal_seq;
ret = bch2_trans_update(trans, &iter, new, BTREE_TRIGGER_norun);
out:
bch2_trans_iter_exit(trans, &iter);
return ret;
}
static int bch2_journal_replay_key(struct btree_trans *trans,
struct journal_key *k)
{
@ -184,6 +225,11 @@ static int bch2_journal_replay_key(struct btree_trans *trans,
if (k->overwritten)
goto out;
if (k->k->k.type == KEY_TYPE_accounting) {
ret = bch2_trans_update_buffered(trans, BTREE_ID_accounting, k->k);
goto out;
}
ret = bch2_trans_update(trans, &iter, k->k, update_flags);
out:
bch2_trans_iter_exit(trans, &iter);
@ -221,6 +267,30 @@ int bch2_journal_replay(struct bch_fs *c)
move_gap(keys, keys->nr);
trans = bch2_trans_get(c);
/*
* Replay accounting keys first: we can't allow the write buffer to
* flush accounting keys until we're done
*/
darray_for_each(*keys, k) {
if (!(k->k->k.type == KEY_TYPE_accounting && !k->allocated))
continue;
cond_resched();
ret = commit_do(trans, NULL, NULL,
BCH_TRANS_COMMIT_no_enospc|
BCH_TRANS_COMMIT_journal_reclaim|
BCH_TRANS_COMMIT_skip_accounting_apply|
BCH_TRANS_COMMIT_no_journal_res,
bch2_journal_replay_accounting_key(trans, k));
if (bch2_fs_fatal_err_on(ret, c, "error replaying accounting; %s", bch2_err_str(ret)))
goto err;
k->overwritten = true;
}
set_bit(BCH_FS_accounting_replay_done, &c->flags);
/*
* First, attempt to replay keys in sorted order. This is more
* efficient - better locality of btree access - but some might fail if
@ -241,9 +311,10 @@ int bch2_journal_replay(struct bch_fs *c)
commit_do(trans, NULL, NULL,
BCH_TRANS_COMMIT_no_enospc|
BCH_TRANS_COMMIT_journal_reclaim|
BCH_TRANS_COMMIT_skip_accounting_apply|
(!k->allocated ? BCH_TRANS_COMMIT_no_journal_res : 0),
bch2_journal_replay_key(trans, k));
BUG_ON(!ret && !k->overwritten);
BUG_ON(!ret && !k->overwritten && k->k->k.type != KEY_TYPE_accounting);
if (ret) {
ret = darray_push(&keys_sorted, k);
if (ret)
@ -271,6 +342,7 @@ int bch2_journal_replay(struct bch_fs *c)
ret = commit_do(trans, NULL, NULL,
BCH_TRANS_COMMIT_no_enospc|
BCH_TRANS_COMMIT_skip_accounting_apply|
(!k->allocated
? BCH_TRANS_COMMIT_no_journal_res|BCH_WATERMARK_reclaim
: 0),
@ -280,7 +352,7 @@ int bch2_journal_replay(struct bch_fs *c)
if (ret)
goto err;
BUG_ON(!k->overwritten);
BUG_ON(k->btree_id != BTREE_ID_accounting && !k->overwritten);
}
/*
@ -355,45 +427,10 @@ static int journal_replay_entry_early(struct bch_fs *c,
container_of(entry, struct jset_entry_usage, entry);
switch (entry->btree_id) {
case BCH_FS_USAGE_reserved:
if (entry->level < BCH_REPLICAS_MAX)
c->usage_base->persistent_reserved[entry->level] =
le64_to_cpu(u->v);
break;
case BCH_FS_USAGE_inodes:
c->usage_base->b.nr_inodes = le64_to_cpu(u->v);
break;
case BCH_FS_USAGE_key_version:
atomic64_set(&c->key_version,
le64_to_cpu(u->v));
atomic64_set(&c->key_version, le64_to_cpu(u->v));
break;
}
break;
}
case BCH_JSET_ENTRY_data_usage: {
struct jset_entry_data_usage *u =
container_of(entry, struct jset_entry_data_usage, entry);
ret = bch2_replicas_set_usage(c, &u->r,
le64_to_cpu(u->v));
break;
}
case BCH_JSET_ENTRY_dev_usage: {
struct jset_entry_dev_usage *u =
container_of(entry, struct jset_entry_dev_usage, entry);
unsigned nr_types = jset_entry_dev_usage_nr_types(u);
rcu_read_lock();
struct bch_dev *ca = bch2_dev_rcu(c, le32_to_cpu(u->dev));
if (ca)
for (unsigned i = 0; i < min_t(unsigned, nr_types, BCH_DATA_NR); i++) {
ca->usage_base->d[i].buckets = le64_to_cpu(u->d[i].buckets);
ca->usage_base->d[i].sectors = le64_to_cpu(u->d[i].sectors);
ca->usage_base->d[i].fragmented = le64_to_cpu(u->d[i].fragmented);
}
rcu_read_unlock();
break;
}
case BCH_JSET_ENTRY_blacklist: {
@ -454,8 +491,6 @@ static int journal_replay_early(struct bch_fs *c,
}
}
bch2_fs_usage_initialize(c);
return 0;
}
@ -810,6 +845,10 @@ use_clean:
if (ret)
goto err;
set_bit(BCH_FS_btree_running, &c->flags);
ret = bch2_sb_set_upgrade_extra(c);
ret = bch2_run_recovery_passes(c);
if (ret)
goto err;
@ -969,14 +1008,12 @@ int bch2_fs_initialize(struct bch_fs *c)
mutex_unlock(&c->sb_lock);
c->curr_recovery_pass = BCH_RECOVERY_PASS_NR;
set_bit(BCH_FS_btree_running, &c->flags);
set_bit(BCH_FS_may_go_rw, &c->flags);
for (unsigned i = 0; i < BTREE_ID_NR; i++)
bch2_btree_root_alloc_fake(c, i, 0);
for_each_member_device(c, ca)
bch2_dev_usage_init(ca);
ret = bch2_fs_journal_alloc(c);
if (ret)
goto err;
@ -986,12 +1023,21 @@ int bch2_fs_initialize(struct bch_fs *c)
* set up the journal.pin FIFO and journal.cur pointer:
*/
bch2_fs_journal_start(&c->journal, 1);
set_bit(BCH_FS_accounting_replay_done, &c->flags);
bch2_journal_set_replay_done(&c->journal);
ret = bch2_fs_read_write_early(c);
if (ret)
goto err;
for_each_member_device(c, ca) {
ret = bch2_dev_usage_init(ca, false);
if (ret) {
bch2_dev_put(ca);
goto err;
}
}
/*
* Write out the superblock and journal buckets, now that we can do
* btree updates
@ -1025,7 +1071,7 @@ int bch2_fs_initialize(struct bch_fs *c)
bch2_inode_pack(&packed_inode, &root_inode);
packed_inode.inode.k.p.snapshot = U32_MAX;
ret = bch2_btree_insert(c, BTREE_ID_inodes, &packed_inode.inode.k_i, NULL, 0);
ret = bch2_btree_insert(c, BTREE_ID_inodes, &packed_inode.inode.k_i, NULL, 0, 0);
bch_err_msg(c, ret, "creating root directory");
if (ret)
goto err;

5
fs/bcachefs/recovery_passes.c
View File

@ -5,6 +5,7 @@
#include "backpointers.h"
#include "btree_gc.h"
#include "btree_node_scan.h"
#include "disk_accounting.h"
#include "ec.h"
#include "fsck.h"
#include "inode.h"
@ -192,6 +193,8 @@ int bch2_run_online_recovery_passes(struct bch_fs *c)
{
int ret = 0;
down_read(&c->state_lock);
for (unsigned i = 0; i < ARRAY_SIZE(recovery_pass_fns); i++) {
struct recovery_pass_fn *p = recovery_pass_fns + i;
@ -207,6 +210,8 @@ int bch2_run_online_recovery_passes(struct bch_fs *c)
break;
}
up_read(&c->state_lock);
return ret;
}

1
fs/bcachefs/recovery_passes_types.h
View File

@ -15,6 +15,7 @@
#define BCH_RECOVERY_PASSES() \
x(scan_for_btree_nodes, 37, 0) \
x(check_topology, 4, 0) \
x(accounting_read, 39, PASS_ALWAYS) \
x(alloc_read, 0, PASS_ALWAYS) \
x(stripes_read, 1, PASS_ALWAYS) \
x(initialize_subvolumes, 2, 0) \

2
fs/bcachefs/reflink.c
View File

@ -171,7 +171,7 @@ static s64 gc_trigger_reflink_p_segment(struct btree_trans *trans,
not_found:
BUG_ON(!(flags & BTREE_TRIGGER_check_repair));
if (fsck_err(c, reflink_p_to_missing_reflink_v,
if (fsck_err(trans, reflink_p_to_missing_reflink_v,
"pointer to missing indirect extent\n"
" %s\n"
" missing range %llu-%llu",

255
fs/bcachefs/replicas.c
View File

@ -2,6 +2,7 @@
#include "bcachefs.h"
#include "buckets.h"
#include "disk_accounting.h"
#include "journal.h"
#include "replicas.h"
#include "super-io.h"
@ -243,145 +244,25 @@ static bool __replicas_has_entry(struct bch_replicas_cpu *r,
return __replicas_entry_idx(r, search) >= 0;
}
bool bch2_replicas_marked_locked(struct bch_fs *c,
struct bch_replicas_entry_v1 *search)
{
verify_replicas_entry(search);
return !search->nr_devs ||
(__replicas_has_entry(&c->replicas, search) &&
(likely((!c->replicas_gc.entries)) ||
__replicas_has_entry(&c->replicas_gc, search)));
}
bool bch2_replicas_marked(struct bch_fs *c,
struct bch_replicas_entry_v1 *search)
{
bool marked;
if (!search->nr_devs)
return true;
verify_replicas_entry(search);
percpu_down_read(&c->mark_lock);
marked = __replicas_has_entry(&c->replicas, search) &&
(likely((!c->replicas_gc.entries)) ||
__replicas_has_entry(&c->replicas_gc, search));
bool ret = bch2_replicas_marked_locked(c, search);
percpu_up_read(&c->mark_lock);
return marked;
}
static void __replicas_table_update(struct bch_fs_usage *dst,
struct bch_replicas_cpu *dst_r,
struct bch_fs_usage *src,
struct bch_replicas_cpu *src_r)
{
int src_idx, dst_idx;
*dst = *src;
for (src_idx = 0; src_idx < src_r->nr; src_idx++) {
if (!src->replicas[src_idx])
continue;
dst_idx = __replicas_entry_idx(dst_r,
cpu_replicas_entry(src_r, src_idx));
BUG_ON(dst_idx < 0);
dst->replicas[dst_idx] = src->replicas[src_idx];
}
}
static void __replicas_table_update_pcpu(struct bch_fs_usage __percpu *dst_p,
struct bch_replicas_cpu *dst_r,
struct bch_fs_usage __percpu *src_p,
struct bch_replicas_cpu *src_r)
{
unsigned src_nr = sizeof(struct bch_fs_usage) / sizeof(u64) + src_r->nr;
struct bch_fs_usage *dst, *src = (void *)
bch2_acc_percpu_u64s((u64 __percpu *) src_p, src_nr);
preempt_disable();
dst = this_cpu_ptr(dst_p);
preempt_enable();
__replicas_table_update(dst, dst_r, src, src_r);
}
/*
* Resize filesystem accounting:
*/
static int replicas_table_update(struct bch_fs *c,
struct bch_replicas_cpu *new_r)
{
struct bch_fs_usage __percpu *new_usage[JOURNAL_BUF_NR];
struct bch_fs_usage_online *new_scratch = NULL;
struct bch_fs_usage __percpu *new_gc = NULL;
struct bch_fs_usage *new_base = NULL;
unsigned i, bytes = sizeof(struct bch_fs_usage) +
sizeof(u64) * new_r->nr;
unsigned scratch_bytes = sizeof(struct bch_fs_usage_online) +
sizeof(u64) * new_r->nr;
int ret = 0;
memset(new_usage, 0, sizeof(new_usage));
for (i = 0; i < ARRAY_SIZE(new_usage); i++)
if (!(new_usage[i] = __alloc_percpu_gfp(bytes,
sizeof(u64), GFP_KERNEL)))
goto err;
if (!(new_base = kzalloc(bytes, GFP_KERNEL)) ||
!(new_scratch = kmalloc(scratch_bytes, GFP_KERNEL)) ||
(c->usage_gc &&
!(new_gc = __alloc_percpu_gfp(bytes, sizeof(u64), GFP_KERNEL))))
goto err;
for (i = 0; i < ARRAY_SIZE(new_usage); i++)
if (c->usage[i])
__replicas_table_update_pcpu(new_usage[i], new_r,
c->usage[i], &c->replicas);
if (c->usage_base)
__replicas_table_update(new_base, new_r,
c->usage_base, &c->replicas);
if (c->usage_gc)
__replicas_table_update_pcpu(new_gc, new_r,
c->usage_gc, &c->replicas);
for (i = 0; i < ARRAY_SIZE(new_usage); i++)
swap(c->usage[i], new_usage[i]);
swap(c->usage_base, new_base);
swap(c->usage_scratch, new_scratch);
swap(c->usage_gc, new_gc);
swap(c->replicas, *new_r);
out:
free_percpu(new_gc);
kfree(new_scratch);
for (i = 0; i < ARRAY_SIZE(new_usage); i++)
free_percpu(new_usage[i]);
kfree(new_base);
return ret;
err:
bch_err(c, "error updating replicas table: memory allocation failure");
ret = -BCH_ERR_ENOMEM_replicas_table;
goto out;
}
static unsigned reserve_journal_replicas(struct bch_fs *c,
struct bch_replicas_cpu *r)
{
struct bch_replicas_entry_v1 *e;
unsigned journal_res_u64s = 0;
/* nr_inodes: */
journal_res_u64s +=
DIV_ROUND_UP(sizeof(struct jset_entry_usage), sizeof(u64));
/* key_version: */
journal_res_u64s +=
DIV_ROUND_UP(sizeof(struct jset_entry_usage), sizeof(u64));
/* persistent_reserved: */
journal_res_u64s +=
DIV_ROUND_UP(sizeof(struct jset_entry_usage), sizeof(u64)) *
BCH_REPLICAS_MAX;
for_each_cpu_replicas_entry(r, e)
journal_res_u64s +=
DIV_ROUND_UP(sizeof(struct jset_entry_data_usage) +
e->nr_devs, sizeof(u64));
return journal_res_u64s;
}
noinline
@ -417,10 +298,6 @@ static int bch2_mark_replicas_slowpath(struct bch_fs *c,
ret = bch2_cpu_replicas_to_sb_replicas(c, &new_r);
if (ret)
goto err;
bch2_journal_entry_res_resize(&c->journal,
&c->replicas_journal_res,
reserve_journal_replicas(c, &new_r));
}
if (!new_r.entries &&
@ -435,7 +312,7 @@ static int bch2_mark_replicas_slowpath(struct bch_fs *c,
/* don't update in memory replicas until changes are persistent */
percpu_down_write(&c->mark_lock);
if (new_r.entries)
ret = replicas_table_update(c, &new_r);
swap(c->replicas, new_r);
if (new_gc.entries)
swap(new_gc, c->replicas_gc);
percpu_up_write(&c->mark_lock);
@ -457,20 +334,6 @@ int bch2_mark_replicas(struct bch_fs *c, struct bch_replicas_entry_v1 *r)
? 0 : bch2_mark_replicas_slowpath(c, r);
}
/* replicas delta list: */
int bch2_replicas_delta_list_mark(struct bch_fs *c,
struct replicas_delta_list *r)
{
struct replicas_delta *d = r->d;
struct replicas_delta *top = (void *) r->d + r->used;
int ret = 0;
for (d = r->d; !ret && d != top; d = replicas_delta_next(d))
ret = bch2_mark_replicas(c, &d->r);
return ret;
}
/*
* Old replicas_gc mechanism: only used for journal replicas entries now, should
* die at some point:
@ -484,8 +347,9 @@ int bch2_replicas_gc_end(struct bch_fs *c, int ret)
percpu_down_write(&c->mark_lock);
ret = ret ?:
bch2_cpu_replicas_to_sb_replicas(c, &c->replicas_gc) ?:
replicas_table_update(c, &c->replicas_gc);
bch2_cpu_replicas_to_sb_replicas(c, &c->replicas_gc);
if (!ret)
swap(c->replicas, c->replicas_gc);
kfree(c->replicas_gc.entries);
c->replicas_gc.entries = NULL;
@ -556,10 +420,10 @@ int bch2_replicas_gc_start(struct bch_fs *c, unsigned typemask)
int bch2_replicas_gc2(struct bch_fs *c)
{
struct bch_replicas_cpu new = { 0 };
unsigned i, nr;
unsigned nr;
int ret = 0;
bch2_journal_meta(&c->journal);
bch2_accounting_mem_gc(c);
retry:
nr = READ_ONCE(c->replicas.nr);
new.entry_size = READ_ONCE(c->replicas.entry_size);
@ -580,24 +444,33 @@ retry:
goto retry;
}
for (i = 0; i < c->replicas.nr; i++) {
for (unsigned i = 0; i < c->replicas.nr; i++) {
struct bch_replicas_entry_v1 *e =
cpu_replicas_entry(&c->replicas, i);
if (e->data_type == BCH_DATA_journal ||
c->usage_base->replicas[i] ||
percpu_u64_get(&c->usage[0]->replicas[i]) ||
percpu_u64_get(&c->usage[1]->replicas[i]) ||
percpu_u64_get(&c->usage[2]->replicas[i]) ||
percpu_u64_get(&c->usage[3]->replicas[i]))
struct disk_accounting_pos k = {
.type = BCH_DISK_ACCOUNTING_replicas,
};
memcpy(&k.replicas, e, replicas_entry_bytes(e));
struct bpos p = disk_accounting_pos_to_bpos(&k);
struct bch_accounting_mem *acc = &c->accounting;
bool kill = eytzinger0_find(acc->k.data, acc->k.nr, sizeof(acc->k.data[0]),
accounting_pos_cmp, &p) >= acc->k.nr;
if (e->data_type == BCH_DATA_journal || !kill)
memcpy(cpu_replicas_entry(&new, new.nr++),
e, new.entry_size);
}
bch2_cpu_replicas_sort(&new);
ret = bch2_cpu_replicas_to_sb_replicas(c, &new) ?:
replicas_table_update(c, &new);
ret = bch2_cpu_replicas_to_sb_replicas(c, &new);
if (!ret)
swap(c->replicas, new);
kfree(new.entries);
@ -611,34 +484,6 @@ retry:
return ret;
}
int bch2_replicas_set_usage(struct bch_fs *c,
struct bch_replicas_entry_v1 *r,
u64 sectors)
{
int ret, idx = bch2_replicas_entry_idx(c, r);
if (idx < 0) {
struct bch_replicas_cpu n;
n = cpu_replicas_add_entry(c, &c->replicas, r);
if (!n.entries)
return -BCH_ERR_ENOMEM_cpu_replicas;
ret = replicas_table_update(c, &n);
if (ret)
return ret;
kfree(n.entries);
idx = bch2_replicas_entry_idx(c, r);
BUG_ON(ret < 0);
}
c->usage_base->replicas[idx] = sectors;
return 0;
}
/* Replicas tracking - superblock: */
static int
@ -724,8 +569,7 @@ int bch2_sb_replicas_to_cpu_replicas(struct bch_fs *c)
bch2_cpu_replicas_sort(&new_r);
percpu_down_write(&c->mark_lock);
ret = replicas_table_update(c, &new_r);
swap(c->replicas, new_r);
percpu_up_write(&c->mark_lock);
kfree(new_r.entries);
@ -1027,10 +871,8 @@ unsigned bch2_sb_dev_has_data(struct bch_sb *sb, unsigned dev)
unsigned bch2_dev_has_data(struct bch_fs *c, struct bch_dev *ca)
{
unsigned ret;
mutex_lock(&c->sb_lock);
ret = bch2_sb_dev_has_data(c->disk_sb.sb, ca->dev_idx);
unsigned ret = bch2_sb_dev_has_data(c->disk_sb.sb, ca->dev_idx);
mutex_unlock(&c->sb_lock);
return ret;
@ -1038,25 +880,6 @@ unsigned bch2_dev_has_data(struct bch_fs *c, struct bch_dev *ca)
void bch2_fs_replicas_exit(struct bch_fs *c)
{
unsigned i;
kfree(c->usage_scratch);
for (i = 0; i < ARRAY_SIZE(c->usage); i++)
free_percpu(c->usage[i]);
kfree(c->usage_base);
kfree(c->replicas.entries);
kfree(c->replicas_gc.entries);
mempool_exit(&c->replicas_delta_pool);
}
int bch2_fs_replicas_init(struct bch_fs *c)
{
bch2_journal_entry_res_resize(&c->journal,
&c->replicas_journal_res,
reserve_journal_replicas(c, &c->replicas));
return mempool_init_kmalloc_pool(&c->replicas_delta_pool, 1,
REPLICAS_DELTA_LIST_MAX) ?:
replicas_table_update(c, &c->replicas);
}

16
fs/bcachefs/replicas.h
View File

@ -25,18 +25,13 @@ int bch2_replicas_entry_idx(struct bch_fs *,
void bch2_devlist_to_replicas(struct bch_replicas_entry_v1 *,
enum bch_data_type,
struct bch_devs_list);
bool bch2_replicas_marked_locked(struct bch_fs *,
struct bch_replicas_entry_v1 *);
bool bch2_replicas_marked(struct bch_fs *, struct bch_replicas_entry_v1 *);
int bch2_mark_replicas(struct bch_fs *,
struct bch_replicas_entry_v1 *);
static inline struct replicas_delta *
replicas_delta_next(struct replicas_delta *d)
{
return (void *) d + replicas_entry_bytes(&d->r) + 8;
}
int bch2_replicas_delta_list_mark(struct bch_fs *, struct replicas_delta_list *);
void bch2_bkey_to_replicas(struct bch_replicas_entry_v1 *, struct bkey_s_c);
static inline void bch2_replicas_entry_cached(struct bch_replicas_entry_v1 *e,
@ -58,10 +53,6 @@ int bch2_replicas_gc_end(struct bch_fs *, int);
int bch2_replicas_gc_start(struct bch_fs *, unsigned);
int bch2_replicas_gc2(struct bch_fs *);
int bch2_replicas_set_usage(struct bch_fs *,
struct bch_replicas_entry_v1 *,
u64);
#define for_each_cpu_replicas_entry(_r, _i) \
for (_i = (_r)->entries; \
(void *) (_i) < (void *) (_r)->entries + (_r)->nr * (_r)->entry_size;\
@ -88,6 +79,5 @@ extern const struct bch_sb_field_ops bch_sb_field_ops_replicas;
extern const struct bch_sb_field_ops bch_sb_field_ops_replicas_v0;
void bch2_fs_replicas_exit(struct bch_fs *);
int bch2_fs_replicas_init(struct bch_fs *);
#endif /* _BCACHEFS_REPLICAS_H */

16
fs/bcachefs/replicas_types.h
View File

@ -8,20 +8,4 @@ struct bch_replicas_cpu {
struct bch_replicas_entry_v1 *entries;
};
struct replicas_delta {
s64 delta;
struct bch_replicas_entry_v1 r;
} __packed;
struct replicas_delta_list {
unsigned size;
unsigned used;
struct {} memset_start;
u64 nr_inodes;
u64 persistent_reserved[BCH_REPLICAS_MAX];
struct {} memset_end;
struct replicas_delta d[];
};
#endif /* _BCACHEFS_REPLICAS_TYPES_H */

62
fs/bcachefs/sb-clean.c
View File

@ -183,25 +183,6 @@ void bch2_journal_super_entries_add_common(struct bch_fs *c,
struct jset_entry **end,
u64 journal_seq)
{
percpu_down_read(&c->mark_lock);
if (!journal_seq) {
for (unsigned i = 0; i < ARRAY_SIZE(c->usage); i++)
bch2_fs_usage_acc_to_base(c, i);
} else {
bch2_fs_usage_acc_to_base(c, journal_seq & JOURNAL_BUF_MASK);
}
{
struct jset_entry_usage *u =
container_of(jset_entry_init(end, sizeof(*u)),
struct jset_entry_usage, entry);
u->entry.type = BCH_JSET_ENTRY_usage;
u->entry.btree_id = BCH_FS_USAGE_inodes;
u->v = cpu_to_le64(c->usage_base->b.nr_inodes);
}
{
struct jset_entry_usage *u =
container_of(jset_entry_init(end, sizeof(*u)),
@ -212,49 +193,6 @@ void bch2_journal_super_entries_add_common(struct bch_fs *c,
u->v = cpu_to_le64(atomic64_read(&c->key_version));
}
for (unsigned i = 0; i < BCH_REPLICAS_MAX; i++) {
struct jset_entry_usage *u =
container_of(jset_entry_init(end, sizeof(*u)),
struct jset_entry_usage, entry);
u->entry.type = BCH_JSET_ENTRY_usage;
u->entry.btree_id = BCH_FS_USAGE_reserved;
u->entry.level = i;
u->v = cpu_to_le64(c->usage_base->persistent_reserved[i]);
}
for (unsigned i = 0; i < c->replicas.nr; i++) {
struct bch_replicas_entry_v1 *e =
cpu_replicas_entry(&c->replicas, i);
struct jset_entry_data_usage *u =
container_of(jset_entry_init(end, sizeof(*u) + e->nr_devs),
struct jset_entry_data_usage, entry);
u->entry.type = BCH_JSET_ENTRY_data_usage;
u->v = cpu_to_le64(c->usage_base->replicas[i]);
unsafe_memcpy(&u->r, e, replicas_entry_bytes(e),
"embedded variable length struct");
}
for_each_member_device(c, ca) {
unsigned b = sizeof(struct jset_entry_dev_usage) +
sizeof(struct jset_entry_dev_usage_type) * BCH_DATA_NR;
struct jset_entry_dev_usage *u =
container_of(jset_entry_init(end, b),
struct jset_entry_dev_usage, entry);
u->entry.type = BCH_JSET_ENTRY_dev_usage;
u->dev = cpu_to_le32(ca->dev_idx);
for (unsigned i = 0; i < BCH_DATA_NR; i++) {
u->d[i].buckets = cpu_to_le64(ca->usage_base->d[i].buckets);
u->d[i].sectors = cpu_to_le64(ca->usage_base->d[i].sectors);
u->d[i].fragmented = cpu_to_le64(ca->usage_base->d[i].fragmented);
}
}
percpu_up_read(&c->mark_lock);
for (unsigned i = 0; i < 2; i++) {
struct jset_entry_clock *clock =
container_of(jset_entry_init(end, sizeof(*clock)),

111
fs/bcachefs/sb-downgrade.c
View File

@ -54,9 +54,32 @@
BCH_FSCK_ERR_subvol_children_not_set) \
x(mi_btree_bitmap, \
BIT_ULL(BCH_RECOVERY_PASS_check_allocations), \
BCH_FSCK_ERR_btree_bitmap_not_marked)
BCH_FSCK_ERR_btree_bitmap_not_marked) \
x(disk_accounting_v2, \
BIT_ULL(BCH_RECOVERY_PASS_check_allocations), \
BCH_FSCK_ERR_bkey_version_in_future, \
BCH_FSCK_ERR_dev_usage_buckets_wrong, \
BCH_FSCK_ERR_dev_usage_sectors_wrong, \
BCH_FSCK_ERR_dev_usage_fragmented_wrong, \
BCH_FSCK_ERR_accounting_mismatch)
#define DOWNGRADE_TABLE()
#define DOWNGRADE_TABLE() \
x(bucket_stripe_sectors, \
0) \
x(disk_accounting_v2, \
BIT_ULL(BCH_RECOVERY_PASS_check_allocations), \
BCH_FSCK_ERR_dev_usage_buckets_wrong, \
BCH_FSCK_ERR_dev_usage_sectors_wrong, \
BCH_FSCK_ERR_dev_usage_fragmented_wrong, \
BCH_FSCK_ERR_fs_usage_hidden_wrong, \
BCH_FSCK_ERR_fs_usage_btree_wrong, \
BCH_FSCK_ERR_fs_usage_data_wrong, \
BCH_FSCK_ERR_fs_usage_cached_wrong, \
BCH_FSCK_ERR_fs_usage_reserved_wrong, \
BCH_FSCK_ERR_fs_usage_nr_inodes_wrong, \
BCH_FSCK_ERR_fs_usage_persistent_reserved_wrong, \
BCH_FSCK_ERR_fs_usage_replicas_wrong, \
BCH_FSCK_ERR_bkey_version_in_future)
struct upgrade_downgrade_entry {
u64 recovery_passes;
@ -80,6 +103,37 @@ UPGRADE_TABLE()
#undef x
};
static int have_stripes(struct bch_fs *c)
{
return !btree_node_fake(c->btree_roots_known[BTREE_ID_stripes].b);
}
int bch2_sb_set_upgrade_extra(struct bch_fs *c)
{
unsigned old_version = c->sb.version_upgrade_complete ?: c->sb.version;
unsigned new_version = c->sb.version;
bool write_sb = false;
int ret = 0;
mutex_lock(&c->sb_lock);
struct bch_sb_field_ext *ext = bch2_sb_field_get(c->disk_sb.sb, ext);
if (old_version < bcachefs_metadata_version_bucket_stripe_sectors &&
new_version >= bcachefs_metadata_version_bucket_stripe_sectors &&
(ret = have_stripes(c) > 0)) {
__set_bit_le64(BCH_RECOVERY_PASS_STABLE_check_allocations, ext->recovery_passes_required);
__set_bit_le64(BCH_FSCK_ERR_alloc_key_dirty_sectors_wrong, ext->errors_silent);
__set_bit_le64(BCH_FSCK_ERR_alloc_key_stripe_sectors_wrong, ext->errors_silent);
write_sb = true;
}
if (write_sb)
bch2_write_super(c);
mutex_unlock(&c->sb_lock);
return ret < 0 ? ret : 0;
}
void bch2_sb_set_upgrade(struct bch_fs *c,
unsigned old_version,
unsigned new_version)
@ -101,16 +155,12 @@ void bch2_sb_set_upgrade(struct bch_fs *c,
ext->recovery_passes_required[0] |=
cpu_to_le64(bch2_recovery_passes_to_stable(passes));
for (const u16 *e = i->errors;
e < i->errors + i->nr_errors;
e++) {
__set_bit(*e, c->sb.errors_silent);
ext->errors_silent[*e / 64] |= cpu_to_le64(BIT_ULL(*e % 64));
}
for (const u16 *e = i->errors; e < i->errors + i->nr_errors; e++)
__set_bit_le64(*e, ext->errors_silent);
}
}
#define x(ver, passes, ...) static const u16 downgrade_ver_##errors[] = { __VA_ARGS__ };
#define x(ver, passes, ...) static const u16 downgrade_##ver##_errors[] = { __VA_ARGS__ };
DOWNGRADE_TABLE()
#undef x
@ -125,6 +175,37 @@ DOWNGRADE_TABLE()
#undef x
};
static int downgrade_table_extra(struct bch_fs *c, darray_char *table)
{
struct bch_sb_field_downgrade_entry *dst = (void *) &darray_top(*table);
unsigned bytes = sizeof(*dst) + sizeof(dst->errors[0]) * le16_to_cpu(dst->nr_errors);
int ret = 0;
unsigned nr_errors = le16_to_cpu(dst->nr_errors);
switch (le16_to_cpu(dst->version)) {
case bcachefs_metadata_version_bucket_stripe_sectors:
if (have_stripes(c)) {
bytes += sizeof(dst->errors[0]) * 2;
ret = darray_make_room(table, bytes);
if (ret)
return ret;
/* open coded __set_bit_le64, as dst is packed and
* dst->recovery_passes is misaligned */
unsigned b = BCH_RECOVERY_PASS_STABLE_check_allocations;
dst->recovery_passes[b / 64] |= cpu_to_le64(BIT_ULL(b % 64));
dst->errors[nr_errors++] = cpu_to_le16(BCH_FSCK_ERR_alloc_key_dirty_sectors_wrong);
}
break;
}
dst->nr_errors = cpu_to_le16(nr_errors);
return ret;
}
static inline const struct bch_sb_field_downgrade_entry *
downgrade_entry_next_c(const struct bch_sb_field_downgrade_entry *e)
{
@ -210,6 +291,9 @@ const struct bch_sb_field_ops bch_sb_field_ops_downgrade = {
int bch2_sb_downgrade_update(struct bch_fs *c)
{
if (!test_bit(BCH_FS_btree_running, &c->flags))
return 0;
darray_char table = {};
int ret = 0;
@ -234,7 +318,14 @@ int bch2_sb_downgrade_update(struct bch_fs *c)
for (unsigned i = 0; i < src->nr_errors; i++)
dst->errors[i] = cpu_to_le16(src->errors[i]);
table.nr += bytes;
downgrade_table_extra(c, &table);
if (!dst->recovery_passes[0] &&
!dst->recovery_passes[1] &&
!dst->nr_errors)
continue;
table.nr += sizeof(*dst) + sizeof(dst->errors[0]) * le16_to_cpu(dst->nr_errors);
}
struct bch_sb_field_downgrade *d = bch2_sb_field_get(c->disk_sb.sb, downgrade);

1
fs/bcachefs/sb-downgrade.h
View File

@ -6,6 +6,7 @@ extern const struct bch_sb_field_ops bch_sb_field_ops_downgrade;
int bch2_sb_downgrade_update(struct bch_fs *);
void bch2_sb_set_upgrade(struct bch_fs *, unsigned, unsigned);
int bch2_sb_set_upgrade_extra(struct bch_fs *);
void bch2_sb_set_downgrade(struct bch_fs *, unsigned, unsigned);
#endif /* _BCACHEFS_SB_DOWNGRADE_H */

4
fs/bcachefs/sb-errors_format.h
View File

@ -227,8 +227,8 @@ enum bch_fsck_flags {
x(deleted_inode_is_dir, 213, 0) \
x(deleted_inode_not_unlinked, 214, 0) \
x(extent_overlapping, 215, 0) \
x(extent_in_missing_inode, 216, 0) \
x(extent_in_non_reg_inode, 217, 0) \
x(key_in_missing_inode, 216, 0) \
x(key_in_wrong_inode_type, 217, 0) \
x(extent_past_end_of_inode, 218, 0) \
x(dirent_empty_name, 219, 0) \
x(dirent_val_too_big, 220, 0) \

24
fs/bcachefs/snapshot.c
View File

@ -552,7 +552,7 @@ static int check_snapshot_tree(struct btree_trans *trans,
if (fsck_err_on(ret ||
root_id != bch2_snapshot_root(c, root_id) ||
st.k->p.offset != le32_to_cpu(s.tree),
c, snapshot_tree_to_missing_snapshot,
trans, snapshot_tree_to_missing_snapshot,
"snapshot tree points to missing/incorrect snapshot:\n %s",
(bch2_bkey_val_to_text(&buf, c, st.s_c), buf.buf))) {
ret = bch2_btree_delete_at(trans, iter, 0);
@ -565,19 +565,19 @@ static int check_snapshot_tree(struct btree_trans *trans,
goto err;
if (fsck_err_on(ret,
c, snapshot_tree_to_missing_subvol,
trans, snapshot_tree_to_missing_subvol,
"snapshot tree points to missing subvolume:\n %s",
(printbuf_reset(&buf),
bch2_bkey_val_to_text(&buf, c, st.s_c), buf.buf)) ||
fsck_err_on(!bch2_snapshot_is_ancestor(c,
le32_to_cpu(subvol.snapshot),
root_id),
c, snapshot_tree_to_wrong_subvol,
trans, snapshot_tree_to_wrong_subvol,
"snapshot tree points to subvolume that does not point to snapshot in this tree:\n %s",
(printbuf_reset(&buf),
bch2_bkey_val_to_text(&buf, c, st.s_c), buf.buf)) ||
fsck_err_on(BCH_SUBVOLUME_SNAP(&subvol),
c, snapshot_tree_to_snapshot_subvol,
trans, snapshot_tree_to_snapshot_subvol,
"snapshot tree points to snapshot subvolume:\n %s",
(printbuf_reset(&buf),
bch2_bkey_val_to_text(&buf, c, st.s_c), buf.buf))) {
@ -814,7 +814,7 @@ static int check_snapshot(struct btree_trans *trans,
}
} else {
if (fsck_err_on(s.subvol,
c, snapshot_should_not_have_subvol,
trans, snapshot_should_not_have_subvol,
"snapshot should not point to subvol:\n %s",
(bch2_bkey_val_to_text(&buf, c, k), buf.buf))) {
u = bch2_bkey_make_mut_typed(trans, iter, &k, 0, snapshot);
@ -831,7 +831,8 @@ static int check_snapshot(struct btree_trans *trans,
if (ret < 0)
goto err;
if (fsck_err_on(!ret, c, snapshot_to_bad_snapshot_tree,
if (fsck_err_on(!ret,
trans, snapshot_to_bad_snapshot_tree,
"snapshot points to missing/incorrect tree:\n %s",
(bch2_bkey_val_to_text(&buf, c, k), buf.buf))) {
ret = snapshot_tree_ptr_repair(trans, iter, k, &s);
@ -843,7 +844,7 @@ static int check_snapshot(struct btree_trans *trans,
real_depth = bch2_snapshot_depth(c, parent_id);
if (fsck_err_on(le32_to_cpu(s.depth) != real_depth,
c, snapshot_bad_depth,
trans, snapshot_bad_depth,
"snapshot with incorrect depth field, should be %u:\n %s",
real_depth, (bch2_bkey_val_to_text(&buf, c, k), buf.buf))) {
u = bch2_bkey_make_mut_typed(trans, iter, &k, 0, snapshot);
@ -859,7 +860,8 @@ static int check_snapshot(struct btree_trans *trans,
if (ret < 0)
goto err;
if (fsck_err_on(!ret, c, snapshot_bad_skiplist,
if (fsck_err_on(!ret,
trans, snapshot_bad_skiplist,
"snapshot with bad skiplist field:\n %s",
(bch2_bkey_val_to_text(&buf, c, k), buf.buf))) {
u = bch2_bkey_make_mut_typed(trans, iter, &k, 0, snapshot);
@ -1021,7 +1023,7 @@ int bch2_reconstruct_snapshots(struct bch_fs *c)
darray_for_each(*t, id) {
if (fsck_err_on(!bch2_snapshot_equiv(c, *id),
c, snapshot_node_missing,
trans, snapshot_node_missing,
"snapshot node %u from tree %s missing, recreate?", *id, buf.buf)) {
if (t->nr > 1) {
bch_err(c, "cannot reconstruct snapshot trees with multiple nodes");
@ -1053,8 +1055,8 @@ int bch2_check_key_has_snapshot(struct btree_trans *trans,
struct printbuf buf = PRINTBUF;
int ret = 0;
if (fsck_err_on(!bch2_snapshot_equiv(c, k.k->p.snapshot), c,
bkey_in_missing_snapshot,
if (fsck_err_on(!bch2_snapshot_equiv(c, k.k->p.snapshot),
trans, bkey_in_missing_snapshot,
"key in missing snapshot %s, delete?",
(bch2_bkey_val_to_text(&buf, c, k), buf.buf)))
ret = bch2_btree_delete_at(trans, iter,

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