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bcachefs: Add warn param to subvol_get_snapshot, peek_inode

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These shouldn't always be fatal errors - logged op resume, in
particular, and we want it as a parameter there.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2024-09-24 05:33:07 -04:00
parent 72350ee0ea
commit 1f73cb4d34
4 changed files with 43 additions and 28 deletions
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24
fs/bcachefs/inode.c
View File

@ -327,20 +327,18 @@ int bch2_inode_unpack(struct bkey_s_c k,
: bch2_inode_unpack_slowpath(k, unpacked);
}
int bch2_inode_peek_nowarn(struct btree_trans *trans,
int __bch2_inode_peek(struct btree_trans *trans,
struct btree_iter *iter,
struct bch_inode_unpacked *inode,
subvol_inum inum, unsigned flags)
subvol_inum inum, unsigned flags,
bool warn)
{
struct bkey_s_c k;
u32 snapshot;
int ret;
ret = bch2_subvolume_get_snapshot(trans, inum.subvol, &snapshot);
int ret = __bch2_subvolume_get_snapshot(trans, inum.subvol, &snapshot, warn);
if (ret)
return ret;
k = bch2_bkey_get_iter(trans, iter, BTREE_ID_inodes,
struct bkey_s_c k = bch2_bkey_get_iter(trans, iter, BTREE_ID_inodes,
SPOS(0, inum.inum, snapshot),
flags|BTREE_ITER_cached);
ret = bkey_err(k);
@ -357,17 +355,9 @@ int bch2_inode_peek_nowarn(struct btree_trans *trans,
return 0;
err:
bch2_trans_iter_exit(trans, iter);
return ret;
}
int bch2_inode_peek(struct btree_trans *trans,
struct btree_iter *iter,
struct bch_inode_unpacked *inode,
subvol_inum inum, unsigned flags)
{
int ret = bch2_inode_peek_nowarn(trans, iter, inode, inum, flags);
if (warn)
bch_err_msg(trans->c, ret, "looking up inum %llu:%llu:", inum.subvol, inum.inum);
bch2_trans_iter_exit(trans, iter);
return ret;
}

24
fs/bcachefs/inode.h
View File

@ -97,10 +97,26 @@ struct bkey_i *bch2_inode_to_v3(struct btree_trans *, struct bkey_i *);
void bch2_inode_unpacked_to_text(struct printbuf *, struct bch_inode_unpacked *);
int bch2_inode_peek_nowarn(struct btree_trans *, struct btree_iter *,
struct bch_inode_unpacked *, subvol_inum, unsigned);
int bch2_inode_peek(struct btree_trans *, struct btree_iter *,
struct bch_inode_unpacked *, subvol_inum, unsigned);
int __bch2_inode_peek(struct btree_trans *, struct btree_iter *,
struct bch_inode_unpacked *, subvol_inum, unsigned, bool);
static inline int bch2_inode_peek_nowarn(struct btree_trans *trans,
struct btree_iter *iter,
struct bch_inode_unpacked *inode,
subvol_inum inum, unsigned flags)
{
return __bch2_inode_peek(trans, iter, inode, inum, flags, false);
}
static inline int bch2_inode_peek(struct btree_trans *trans,
struct btree_iter *iter,
struct bch_inode_unpacked *inode,
subvol_inum inum, unsigned flags)
{
return __bch2_inode_peek(trans, iter, inode, inum, flags, true);
int ret = bch2_inode_peek_nowarn(trans, iter, inode, inum, flags);
return ret;
}
int bch2_inode_write_flags(struct btree_trans *, struct btree_iter *,
struct bch_inode_unpacked *, enum btree_iter_update_trigger_flags);

13
fs/bcachefs/subvolume.c
View File

@ -332,8 +332,8 @@ int bch2_snapshot_get_subvol(struct btree_trans *trans, u32 snapshot,
bch2_subvolume_get(trans, le32_to_cpu(snap.subvol), true, 0, subvol);
}
int bch2_subvolume_get_snapshot(struct btree_trans *trans, u32 subvolid,
u32 *snapid)
int __bch2_subvolume_get_snapshot(struct btree_trans *trans, u32 subvolid,
u32 *snapid, bool warn)
{
struct btree_iter iter;
struct bkey_s_c_subvolume subvol;
@ -344,7 +344,8 @@ int bch2_subvolume_get_snapshot(struct btree_trans *trans, u32 subvolid,
BTREE_ITER_cached|BTREE_ITER_with_updates,
subvolume);
ret = bkey_err(subvol);
bch2_fs_inconsistent_on(bch2_err_matches(ret, ENOENT), trans->c,
bch2_fs_inconsistent_on(warn && bch2_err_matches(ret, ENOENT), trans->c,
"missing subvolume %u", subvolid);
if (likely(!ret))
@ -353,6 +354,12 @@ int bch2_subvolume_get_snapshot(struct btree_trans *trans, u32 subvolid,
return ret;
}
int bch2_subvolume_get_snapshot(struct btree_trans *trans, u32 subvolid,
u32 *snapid)
{
return __bch2_subvolume_get_snapshot(trans, subvolid, snapid, true);
}
static int bch2_subvolume_reparent(struct btree_trans *trans,
struct btree_iter *iter,
struct bkey_s_c k,

2
fs/bcachefs/subvolume.h
View File

@ -26,6 +26,8 @@ int bch2_subvolume_trigger(struct btree_trans *, enum btree_id, unsigned,
int bch2_subvol_has_children(struct btree_trans *, u32);
int bch2_subvolume_get(struct btree_trans *, unsigned,
bool, int, struct bch_subvolume *);
int __bch2_subvolume_get_snapshot(struct btree_trans *, u32,
u32 *, bool);
int bch2_subvolume_get_snapshot(struct btree_trans *, u32, u32 *);
int bch2_subvol_is_ro_trans(struct btree_trans *, u32);