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| author | Guoyu Ou <benogy@gmail.com> | 2024-02-13 09:20:04 +0100 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2024-03-10 20:34:07 +0100 |
| commit | 0be5b38bce6c4d3563f7575f6bac94806b2fbc17 (patch) | |
| tree | 688a5726d99cbb56ea7dd7c115563c9281a039ea /fs/bcachefs/dirent.c | |
| parent | bcachefs: fix split brain message (diff) | |
| download | linux-0be5b38bce6c4d3563f7575f6bac94806b2fbc17.tar.xz linux-0be5b38bce6c4d3563f7575f6bac94806b2fbc17.zip | |
bcachefs: skip invisible entries in empty subvolume checking
When we are checking whether a subvolume is empty in the specified snapshot,
entries that do not belong to this subvolume should be skipped.
This fixes the following case:
$ bcachefs subvolume create ./sub
$ cd sub
$ bcachefs subvolume create ./sub2
$ bcachefs subvolume snapshot . ./snap
$ ls -a snap
. ..
$ rmdir snap
rmdir: failed to remove 'snap': Directory not empty
As Kent suggested, we pass 0 in may_delete_deleted_inode() to ignore subvols
in the subvol we are checking, because inode.bi_subvol is only set on
subvolume roots, and we can't go through every inode in the subvolume and
change bi_subvol when taking a snapshot. It makes the check less strict, but
that's ok, the rest of fsck will still catch it.
Signed-off-by: Guoyu Ou <benogy@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'fs/bcachefs/dirent.c')
| -rw-r--r-- | fs/bcachefs/dirent.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/bcachefs/dirent.c b/fs/bcachefs/dirent.c index 4ae1e9f002a0..82c5bff01411 100644 --- a/fs/bcachefs/dirent.c +++ b/fs/bcachefs/dirent.c @@ -508,7 +508,7 @@ u64 bch2_dirent_lookup(struct bch_fs *c, subvol_inum dir, return ret; } -int bch2_empty_dir_snapshot(struct btree_trans *trans, u64 dir, u32 snapshot) +int bch2_empty_dir_snapshot(struct btree_trans *trans, u64 dir, u32 subvol, u32 snapshot) { struct btree_iter iter; struct bkey_s_c k; @@ -518,6 +518,9 @@ int bch2_empty_dir_snapshot(struct btree_trans *trans, u64 dir, u32 snapshot) SPOS(dir, 0, snapshot), POS(dir, U64_MAX), 0, k, ret) if (k.k->type == KEY_TYPE_dirent) { + struct bkey_s_c_dirent d = bkey_s_c_to_dirent(k); + if (d.v->d_type == DT_SUBVOL && le32_to_cpu(d.v->d_parent_subvol) != subvol) + continue; ret = -ENOTEMPTY; break; } @@ -531,7 +534,7 @@ int bch2_empty_dir_trans(struct btree_trans *trans, subvol_inum dir) u32 snapshot; return bch2_subvolume_get_snapshot(trans, dir.subvol, &snapshot) ?: - bch2_empty_dir_snapshot(trans, dir.inum, snapshot); + bch2_empty_dir_snapshot(trans, dir.inum, dir.subvol, snapshot); } int bch2_readdir(struct bch_fs *c, subvol_inum inum, struct dir_context *ctx) |