diff options
| author | Daniel J Blueman <daniel@quora.org> | 2023-11-12 00:38:41 +0000 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2023-11-14 23:44:43 -0500 |
| commit | b783fc4d1366658200bf759e1010655a9e2e145c (patch) | |
| tree | d4cb69e635d809e06a666017dd1e6eba12f54ebe | |
| parent | 069749688ea4bbaeff0ca3b229b443ea96b03757 (diff) | |
| download | linux-rcu-b783fc4d1366658200bf759e1010655a9e2e145c.tar.gz | |
bcachefs: Fix potential sleeping during mount
During mount, bcachefs mount option processing may sleep while allocating a string buffer.
Fix this by reference counting in order to take the atomic path.
Signed-off-by: Daniel J Blueman <daniel@quora.org>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
| -rw-r--r-- | fs/bcachefs/disk_groups.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/bcachefs/disk_groups.c b/fs/bcachefs/disk_groups.c index 1f334124055ba1..4d0cb0ccff32f2 100644 --- a/fs/bcachefs/disk_groups.c +++ b/fs/bcachefs/disk_groups.c @@ -555,6 +555,7 @@ void bch2_target_to_text(struct printbuf *out, struct bch_fs *c, unsigned v) case TARGET_DEV: { struct bch_dev *ca; + out->atomic++; rcu_read_lock(); ca = t.dev < c->sb.nr_devices ? rcu_dereference(c->devs[t.dev]) @@ -570,6 +571,7 @@ void bch2_target_to_text(struct printbuf *out, struct bch_fs *c, unsigned v) } rcu_read_unlock(); + out->atomic--; break; } case TARGET_GROUP: |