[14/18] btrfs: assert delayed refs lock is held at find_first_ref_head()

Commit Message

Filipe Manana Oct. 24, 2024, 4:24 p.m. UTC

From: Filipe Manana <[e-mail]>

The delayed refs lock must be held when calling find_first_ref_head(), so
assert that it's being held.

Signed-off-by: Filipe Manana <[e-mail]>
---
 fs/btrfs/delayed-ref.c | 2 ++
 1 file changed, 2 insertions(+)

Patch

diff --git a/fs/btrfs/delayed-ref.c b/fs/btrfs/delayed-ref.c
index 3aeb2c79c1ae..a8cf76f44b2b 100644
--- a/fs/btrfs/delayed-ref.c
+++ b/fs/btrfs/delayed-ref.c
@@ -384,6 +384,8 @@  static struct btrfs_delayed_ref_head *find_first_ref_head(
 	struct rb_node *n;
 	struct btrfs_delayed_ref_head *entry;
 
+	lockdep_assert_held(&dr->lock);
+
 	n = rb_first_cached(&dr->href_root);
 	if (!n)
 		return NULL;