[PATCH 5/5] btrfs: assert bio list lock in merge_rbio

[David Sterba <dsterba@suse.com>]

Turn the comment about required lock into an assertion.

Signed-off-by: David Sterba <dsterba@suse.com>
---
 fs/btrfs/raid56.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/btrfs/raid56.c b/fs/btrfs/raid56.c
index 67a6f7d47402..505979d867e0 100644
--- a/fs/btrfs/raid56.c
+++ b/fs/btrfs/raid56.c
@@ -310,12 +310,12 @@ static void steal_rbio(struct btrfs_raid_bio *src, struct btrfs_raid_bio *dest)
  * merging means we take the bio_list from the victim and
  * splice it into the destination.  The victim should
  * be discarded afterwards.
- *
- * must be called with dest->rbio_list_lock held
  */
 static void merge_rbio(struct btrfs_raid_bio *dest,
 		       struct btrfs_raid_bio *victim)
 {
+	lockdep_assert_held(&dest->bio_list_lock);
+
 	bio_list_merge(&dest->bio_list, &victim->bio_list);
 	dest->bio_list_bytes += victim->bio_list_bytes;
 	dest->generic_bio_cnt += victim->generic_bio_cnt;
-- 
2.21.0