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Author SHA1 Message Date
Kent Overstreet
8fed323b14 bcachefs: snapshot_format.h 
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 13:27:10 -05:00
Kent Overstreet
d455179fce bcachefs: alloc_background_format.h 
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 13:27:10 -05:00
Kent Overstreet
72e0801049 bcachefs: xattr_format.h 
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 13:27:10 -05:00
Kent Overstreet
7ffc4daa5f bcachefs: dirent_format.h 
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 13:27:10 -05:00
Kent Overstreet
b36425da71 bcachefs: inode_format.h 
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 13:27:10 -05:00
Kent Overstreet
82de6207fb bcachefs; quota_format.h 
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 13:27:10 -05:00
Kent Overstreet
43314801a4 bcachefs: sb-counters_format.h 
bcachefs_format.h has gotten too big; let's do some organizing.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 13:27:10 -05:00
Kent Overstreet
3a58dfbc46 bcachefs: counters.c -> sb-counters.c 
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 13:27:10 -05:00
Kent Overstreet
12207f49ef bcachefs: comment bch_subvolume 
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 13:27:10 -05:00
Kent Overstreet
d32088f2f2 bcachefs: bch_snapshot::btime 
Add a field to bch_snapshot for creation time; this will be important
when we start exposing the snapshot tree to userspace.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 13:27:10 -05:00
Kent Overstreet
7be0208fc9 bcachefs: add missing __GFP_NOWARN 
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 13:27:10 -05:00
Kent Overstreet
d7e77f53e9 bcachefs: opts->compression can now also be applied in the background 
The "apply this compression method in the background" paths now use the
compression option if background_compression is not set; this means that
setting or changing the compression option will cause existing data to
be compressed accordingly in the background.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 13:27:10 -05:00
Kent Overstreet
ec4edd7b9d bcachefs: Prep work for variable size btree node buffers 
bcachefs btree nodes are big - typically 256k - and btree roots are
pinned in memory. As we're now up to 18 btrees, we now have significant
memory overhead in mostly empty btree roots.

And in the future we're going to start enforcing that certain btree node
boundaries exist, to solve lock contention issues - analagous to XFS's
AGIs.

Thus, we need to start allocating smaller btree node buffers when we
can. This patch changes code that refers to the filesystem constant
c->opts.btree_node_size to refer to the btree node buffer size -
btree_buf_bytes() - where appropriate.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 13:27:10 -05:00
Su Yue
2acc59dd88 bcachefs: grab s_umount only if snapshotting 
When I was testing mongodb over bcachefs with compression,
there is a lockdep warning when snapshotting mongodb data volume.

$ cat test.sh
prog=bcachefs

$prog subvolume create /mnt/data
$prog subvolume create /mnt/data/snapshots

while true;do
    $prog subvolume snapshot /mnt/data /mnt/data/snapshots/$(date +%s)
    sleep 1s
done

$ cat /etc/mongodb.conf
systemLog:
  destination: file
  logAppend: true
  path: /mnt/data/mongod.log

storage:
  dbPath: /mnt/data/

lockdep reports:
[ 3437.452330] ======================================================
[ 3437.452750] WARNING: possible circular locking dependency detected
[ 3437.453168] 6.7.0-rc7-custom+ #85 Tainted: G            E
[ 3437.453562] ------------------------------------------------------
[ 3437.453981] bcachefs/35533 is trying to acquire lock:
[ 3437.454325] ffffa0a02b2b1418 (sb_writers#10){.+.+}-{0:0}, at: filename_create+0x62/0x190
[ 3437.454875]
               but task is already holding lock:
[ 3437.455268] ffffa0a02b2b10e0 (&type->s_umount_key#48){.+.+}-{3:3}, at: bch2_fs_file_ioctl+0x232/0xc90 [bcachefs]
[ 3437.456009]
               which lock already depends on the new lock.

[ 3437.456553]
               the existing dependency chain (in reverse order) is:
[ 3437.457054]
               -> #3 (&type->s_umount_key#48){.+.+}-{3:3}:
[ 3437.457507]        down_read+0x3e/0x170
[ 3437.457772]        bch2_fs_file_ioctl+0x232/0xc90 [bcachefs]
[ 3437.458206]        __x64_sys_ioctl+0x93/0xd0
[ 3437.458498]        do_syscall_64+0x42/0xf0
[ 3437.458779]        entry_SYSCALL_64_after_hwframe+0x6e/0x76
[ 3437.459155]
               -> #2 (&c->snapshot_create_lock){++++}-{3:3}:
[ 3437.459615]        down_read+0x3e/0x170
[ 3437.459878]        bch2_truncate+0x82/0x110 [bcachefs]
[ 3437.460276]        bchfs_truncate+0x254/0x3c0 [bcachefs]
[ 3437.460686]        notify_change+0x1f1/0x4a0
[ 3437.461283]        do_truncate+0x7f/0xd0
[ 3437.461555]        path_openat+0xa57/0xce0
[ 3437.461836]        do_filp_open+0xb4/0x160
[ 3437.462116]        do_sys_openat2+0x91/0xc0
[ 3437.462402]        __x64_sys_openat+0x53/0xa0
[ 3437.462701]        do_syscall_64+0x42/0xf0
[ 3437.462982]        entry_SYSCALL_64_after_hwframe+0x6e/0x76
[ 3437.463359]
               -> #1 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}:
[ 3437.463843]        down_write+0x3b/0xc0
[ 3437.464223]        bch2_write_iter+0x5b/0xcc0 [bcachefs]
[ 3437.464493]        vfs_write+0x21b/0x4c0
[ 3437.464653]        ksys_write+0x69/0xf0
[ 3437.464839]        do_syscall_64+0x42/0xf0
[ 3437.465009]        entry_SYSCALL_64_after_hwframe+0x6e/0x76
[ 3437.465231]
               -> #0 (sb_writers#10){.+.+}-{0:0}:
[ 3437.465471]        __lock_acquire+0x1455/0x21b0
[ 3437.465656]        lock_acquire+0xc6/0x2b0
[ 3437.465822]        mnt_want_write+0x46/0x1a0
[ 3437.465996]        filename_create+0x62/0x190
[ 3437.466175]        user_path_create+0x2d/0x50
[ 3437.466352]        bch2_fs_file_ioctl+0x2ec/0xc90 [bcachefs]
[ 3437.466617]        __x64_sys_ioctl+0x93/0xd0
[ 3437.466791]        do_syscall_64+0x42/0xf0
[ 3437.466957]        entry_SYSCALL_64_after_hwframe+0x6e/0x76
[ 3437.467180]
               other info that might help us debug this:

[ 3437.469670] 2 locks held by bcachefs/35533:
               other info that might help us debug this:

[ 3437.467507] Chain exists of:
                 sb_writers#10 --> &c->snapshot_create_lock --> &type->s_umount_key#48

[ 3437.467979]  Possible unsafe locking scenario:

[ 3437.468223]        CPU0                    CPU1
[ 3437.468405]        ----                    ----
[ 3437.468585]   rlock(&type->s_umount_key#48);
[ 3437.468758]                                lock(&c->snapshot_create_lock);
[ 3437.469030]                                lock(&type->s_umount_key#48);
[ 3437.469291]   rlock(sb_writers#10);
[ 3437.469434]
                *** DEADLOCK ***

[ 3437.469670] 2 locks held by bcachefs/35533:
[ 3437.469838]  #0: ffffa0a02ce00a88 (&c->snapshot_create_lock){++++}-{3:3}, at: bch2_fs_file_ioctl+0x1e3/0xc90 [bcachefs]
[ 3437.470294]  #1: ffffa0a02b2b10e0 (&type->s_umount_key#48){.+.+}-{3:3}, at: bch2_fs_file_ioctl+0x232/0xc90 [bcachefs]
[ 3437.470744]
               stack backtrace:
[ 3437.470922] CPU: 7 PID: 35533 Comm: bcachefs Kdump: loaded Tainted: G            E      6.7.0-rc7-custom+ #85
[ 3437.471313] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Arch Linux 1.16.3-1-1 04/01/2014
[ 3437.471694] Call Trace:
[ 3437.471795]  <TASK>
[ 3437.471884]  dump_stack_lvl+0x57/0x90
[ 3437.472035]  check_noncircular+0x132/0x150
[ 3437.472202]  __lock_acquire+0x1455/0x21b0
[ 3437.472369]  lock_acquire+0xc6/0x2b0
[ 3437.472518]  ? filename_create+0x62/0x190
[ 3437.472683]  ? lock_is_held_type+0x97/0x110
[ 3437.472856]  mnt_want_write+0x46/0x1a0
[ 3437.473025]  ? filename_create+0x62/0x190
[ 3437.473204]  filename_create+0x62/0x190
[ 3437.473380]  user_path_create+0x2d/0x50
[ 3437.473555]  bch2_fs_file_ioctl+0x2ec/0xc90 [bcachefs]
[ 3437.473819]  ? lock_acquire+0xc6/0x2b0
[ 3437.474002]  ? __fget_files+0x2a/0x190
[ 3437.474195]  ? __fget_files+0xbc/0x190
[ 3437.474380]  ? lock_release+0xc5/0x270
[ 3437.474567]  ? __x64_sys_ioctl+0x93/0xd0
[ 3437.474764]  ? __pfx_bch2_fs_file_ioctl+0x10/0x10 [bcachefs]
[ 3437.475090]  __x64_sys_ioctl+0x93/0xd0
[ 3437.475277]  do_syscall_64+0x42/0xf0
[ 3437.475454]  entry_SYSCALL_64_after_hwframe+0x6e/0x76
[ 3437.475691] RIP: 0033:0x7f2743c313af
======================================================

In __bch2_ioctl_subvolume_create(), we grab s_umount unconditionally
and unlock it at the end of the function. There is a comment
"why do we need this lock?" about the lock coming from
commit 42d237320e ("bcachefs: Snapshot creation, deletion")
The reason is that __bch2_ioctl_subvolume_create() calls
sync_inodes_sb() which enforce locked s_umount to writeback all dirty
nodes before doing snapshot works.

Fix it by read locking s_umount for snapshotting only and unlocking
s_umount after sync_inodes_sb().

Signed-off-by: Su Yue <glass.su@suse.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 13:27:10 -05:00
Su Yue
369acf97d6 bcachefs: kvfree bch_fs::snapshots in bch2_fs_snapshots_exit 
bch_fs::snapshots is allocated by kvzalloc in __snapshot_t_mut.
It should be freed by kvfree not kfree.
Or umount will triger:

[  406.829178 ] BUG: unable to handle page fault for address: ffffe7b487148008
[  406.830676 ] #PF: supervisor read access in kernel mode
[  406.831643 ] #PF: error_code(0x0000) - not-present page
[  406.832487 ] PGD 0 P4D 0
[  406.832898 ] Oops: 0000 [#1] PREEMPT SMP PTI
[  406.833512 ] CPU: 2 PID: 1754 Comm: umount Kdump: loaded Tainted: G           OE      6.7.0-rc7-custom+ #90
[  406.834746 ] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Arch Linux 1.16.3-1-1 04/01/2014
[  406.835796 ] RIP: 0010:kfree+0x62/0x140
[  406.836197 ] Code: 80 48 01 d8 0f 82 e9 00 00 00 48 c7 c2 00 00 00 80 48 2b 15 78 9f 1f 01 48 01 d0 48 c1 e8 0c 48 c1 e0 06 48 03 05 56 9f 1f 01 <48> 8b 50 08 48 89 c7 f6 c2 01 0f 85 b0 00 00 00 66 90 48 8b 07 f6
[  406.837810 ] RSP: 0018:ffffb9d641607e48 EFLAGS: 00010286
[  406.838213 ] RAX: ffffe7b487148000 RBX: ffffb9d645200000 RCX: ffffb9d641607dc4
[  406.838738 ] RDX: 000065bb00000000 RSI: ffffffffc0d88b84 RDI: ffffb9d645200000
[  406.839217 ] RBP: ffff9a4625d00068 R08: 0000000000000001 R09: 0000000000000001
[  406.839650 ] R10: 0000000000000001 R11: 000000000000001f R12: ffff9a4625d4da80
[  406.840055 ] R13: ffff9a4625d00000 R14: ffffffffc0e2eb20 R15: 0000000000000000
[  406.840451 ] FS:  00007f0a264ffb80(0000) GS:ffff9a4e2d500000(0000) knlGS:0000000000000000
[  406.840851 ] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  406.841125 ] CR2: ffffe7b487148008 CR3: 000000018c4d2000 CR4: 00000000000006f0
[  406.841464 ] Call Trace:
[  406.841583 ]  <TASK>
[  406.841682 ]  ? __die+0x1f/0x70
[  406.841828 ]  ? page_fault_oops+0x159/0x470
[  406.842014 ]  ? fixup_exception+0x22/0x310
[  406.842198 ]  ? exc_page_fault+0x1ed/0x200
[  406.842382 ]  ? asm_exc_page_fault+0x22/0x30
[  406.842574 ]  ? bch2_fs_release+0x54/0x280 [bcachefs]
[  406.842842 ]  ? kfree+0x62/0x140
[  406.842988 ]  ? kfree+0x104/0x140
[  406.843138 ]  bch2_fs_release+0x54/0x280 [bcachefs]
[  406.843390 ]  kobject_put+0xb7/0x170
[  406.843552 ]  deactivate_locked_super+0x2f/0xa0
[  406.843756 ]  cleanup_mnt+0xba/0x150
[  406.843917 ]  task_work_run+0x59/0xa0
[  406.844083 ]  exit_to_user_mode_prepare+0x197/0x1a0
[  406.844302 ]  syscall_exit_to_user_mode+0x16/0x40
[  406.844510 ]  do_syscall_64+0x4e/0xf0
[  406.844675 ]  entry_SYSCALL_64_after_hwframe+0x6e/0x76
[  406.844907 ] RIP: 0033:0x7f0a2664e4fb

Signed-off-by: Su Yue <glass.su@suse.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 13:27:10 -05:00
Kent Overstreet
00fff4dd58 bcachefs: bios must be 512 byte algined 
Fixes: 023f9ac9f7 bcachefs: Delete dio read alignment check
Reported-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 13:27:10 -05:00
Colin Ian King
aead3428e8 bcachefs: remove redundant variable tmp 
The variable tmp is being assigned a value but it isn't being
read afterwards. The assignment is redundant and so tmp can be
removed.

Cleans up clang scan build warning:
warning: Although the value stored to 'ret' is used in the enclosing
expression, the value is never actually read from 'ret'
[deadcode.DeadStores]

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 13:27:10 -05:00
Kent Overstreet
b97de45365 bcachefs: Improve trace_trans_restart_relock 
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 13:27:10 -05:00
Kent Overstreet
46bf2e9cc7 bcachefs: Fix excess transaction restarts in __bchfs_fallocate() 
drop_locks_do() should not be used in a fastpath without first trying
the do in nonblocking mode - the unlock and relock will cause excessive
transaction restarts and potentially livelocking with other threads that
are contending for the same locks.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 13:27:10 -05:00
Kent Overstreet
1a5039041b bcachefs: extents_to_bp_state 
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 13:27:10 -05:00
Kent Overstreet
ba96d36ca5 bcachefs: bkey_and_val_eq() 
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 13:27:09 -05:00
Kent Overstreet
e6a2566f7a bcachefs: Better journal tracepoints 
Factor out bch2_journal_bufs_to_text(), and use it in the
journal_entry_full() tracepoint; when we can't get a journal reservation
we need to know the outstanding journal entry sizes to know if the
problem is due to excessive flushing.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 13:27:09 -05:00
Kent Overstreet
4ae016607b bcachefs: Print size of superblock with space allocated 
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 13:27:09 -05:00
Kent Overstreet
a6548c8b5e bcachefs: Avoid flushing the journal in the discard path 
When issuing discards, we may need to flush the journal if there's too
many buckets that can't be discarded until a journal flush.

But the heuristic was bad; we should be comparing the number of buckets
that need to flushes against the number of free buckets, not the number
of buckets we saw.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 13:27:09 -05:00
Kent Overstreet
189c176c5d bcachefs: Improve move_extent tracepoint 
Also print out the data_opts, so that we can see what specifically is
being done to an extent.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 13:27:09 -05:00
Kent Overstreet
ef740a1e29 bcachefs: Add missing bch2_moving_ctxt_flush_all() 
This fixes a bug with rebalance IOs getting stuck with reads completed,
but writes never being issued.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 13:27:09 -05:00
Kent Overstreet
fa3185af43 bcachefs: Re-add move_extent_write tracepoint 
It appears this was accidentally deleted at some point - also, do a bit
of cleanup.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 13:27:09 -05:00
Kent Overstreet
d92b83f592 bcachefs: bch2_kthread_io_clock_wait() no longer sleeps until full amount 
Drop t he loop in bch2_kthread_io_clock_wait(): this allows the code
that uses it to be woken up for other reasons, and fixes a bug where
rebalance wouldn't wake up when a scan was requested.

This raises the possibility of spurious wakeups, but callers should
always be able to handle that reasonably well.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 13:27:09 -05:00
Kent Overstreet
741c1d3ec1 bcachefs: Add .val_to_text() for KEY_TYPE_cookie 
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 13:27:09 -05:00
Kent Overstreet
0124f42da7 bcachefs: Don't pass memcmp() as a pointer 
Some (buggy!) compilers have issues with this.

Fixes: https://github.com/koverstreet/bcachefs/issues/625
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 13:27:04 -05:00
Kent Overstreet
57f2d20976 bcachefs: Reduce would_deadlock restarts 
We don't have to take locks in any particular ordering - we'll make
forward progress just fine - but if we try to stick to an ordering, it
can help to avoid excessive would_deadlock transaction restarts.

This tweaks the reflink path to take extents btree locks in the right
order.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 06:01:45 -05:00
Kent Overstreet
5b14ce35af bcachefs: bch2_trans_account_disk_usage_change() 
The disk space accounting rewrite is splitting out accounting for each
replicas set - those are moving to btree keys, instead of percpu
counters.

This breaks bch2_trans_fs_usage_apply() up, splitting out the part we
will still need.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 06:01:45 -05:00
Kent Overstreet
8e7834a883 bcachefs: bch_fs_usage_base 
Split out base filesystem usage into its own type; prep work for
breaking up bch2_trans_fs_usage_apply().

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 06:01:45 -05:00
Kent Overstreet
4f564f4f9f bcachefs: bch2_prt_compression_type() 
bounds checking helper, since compression types are extensible

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 06:01:45 -05:00
Kent Overstreet
e58f963cec bcachefs: helpers for printing data types 
We need bounds checking since new versions may introduce new data types.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 06:01:45 -05:00
Kent Overstreet
38c23fb809 bcachefs: BTREE_TRIGGER_ATOMIC 
Add a new flag to be explicit about when we're running atomic triggers.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 06:01:45 -05:00
Kent Overstreet
9d5dba2ba8 bcachefs: drop to_text code for obsolete bps in alloc keys 
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 06:01:45 -05:00
Kent Overstreet
3fe8a18640 bcachefs: eytzinger_for_each() declares loop iter 
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 06:01:45 -05:00
Kent Overstreet
4ecad0da9d bcachefs: Don't log errors if BCH_WRITE_ALLOC_NOWAIT 
Previously, we added logging in the write path to ensure that any
unexpected errors getting reported to userspace have a log message; but
BCH_WRITE_ALLOC_NOWAIT is a special case, it's used for promotes where
errors are expected and not reported out to userspace - so we need to
silence those.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 06:01:45 -05:00
Su Yue
e240c1b363 bcachefs: fix memleak in bch2_split_devs 
The pointer dev_name can be modified by strseq(),
then causes the memleak:

unreferenced object 0xffff9d08a2916c80 (size 32):
  comm "mount.bcachefs", pid 9090, jiffies 4295856224 (age 17.564s)
  hex dump (first 32 bytes):
    2f 64 65 76 2f 6d 61 70 70 65 72 2f 74 65 73 74  /dev/mapper/test
    2d 30 00 00 00 00 00 00 00 00 00 00 00 00 00 00  -0..............
  backtrace:
    [<00000000c5d3be7d>] __kmem_cache_alloc_node+0x1f3/0x2c0
    [<0000000052215d26>] __kmalloc_node_track_caller+0x51/0x150
    [<0000000069fea956>] kstrdup+0x32/0x60
    [<000000000877fcf1>] bch2_split_devs+0x3f/0x150 [bcachefs]
    [<000000007ee93204>] bch2_mount+0xcb/0x640 [bcachefs]
    [<000000002dd1e04b>] legacy_get_tree+0x30/0x60
    [<000000006afc31d3>] vfs_get_tree+0x28/0xf0
    [<000000007b0c538e>] path_mount+0x475/0xb60
    [<0000000092de5882>] __x64_sys_mount+0x105/0x140
    [<0000000054fc05d8>] do_syscall_64+0x42/0xf0
    [<00000000df584910>] entry_SYSCALL_64_after_hwframe+0x6e/0x76

Fix it by copy pointer dev_name at beginning and free the copied
pointer at end.

Signed-off-by: Su Yue <glass.su@suse.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-21 06:01:45 -05:00
Kent Overstreet
169de41985 bcachefs: eytzinger0_find() search should be const 
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-05 23:24:46 -05:00
Kent Overstreet
f5d4481c3e bcachefs: move "ptrs not changing" optimization to bch2_trigger_extent() 
This is useful for btree ptrs as well, when we're just updating
sectors_written.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-05 23:24:46 -05:00
Kent Overstreet
e7999235e6 bcachefs: fix simulateously upgrading & downgrading 
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-05 23:24:21 -05:00
Kent Overstreet
72e2c920e4 bcachefs: Restart recovery passes more reliably 
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-05 23:24:21 -05:00
Kent Overstreet
d04d272743 bcachefs: bch2_dump_bset() doesn't choke on u64s == 0 
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-05 23:24:21 -05:00
Kent Overstreet
4819b66e29 bcachefs: improve checksum error messages 
new helpers:
 - bch2_csum_to_text()
 - bch2_csum_err_msg()

standardize our checksum error messages a bit, and print out the
checksums a bit more nicely.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-05 23:24:21 -05:00
Kent Overstreet
2d02bfb01b bcachefs: improve validate_bset_keys() 
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-05 23:24:21 -05:00
Kent Overstreet
5e448c4893 bcachefs: print sb magic when relevant 
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-05 23:24:21 -05:00
Kent Overstreet
5b88365660 bcachefs: __bch2_sb_field_to_text() 
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-05 23:24:21 -05:00
Kent Overstreet
1f5af5fc17 bcachefs: %pg is banished 
not portable to userspace

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2024-01-05 23:24:21 -05:00