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-rw-r--r--fs/btrfs/locking.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/locking.c b/fs/btrfs/locking.c
index d13128c..621083f 100644
--- a/fs/btrfs/locking.c
+++ b/fs/btrfs/locking.c
@@ -290,7 +290,7 @@ void btrfs_tree_unlock(struct extent_buffer *eb)
/*
* Make sure counter is updated before we wake up waiters.
*/
- smp_mb();
+ smp_mb__after_atomic();
if (waitqueue_active(&eb->write_lock_wq))
wake_up(&eb->write_lock_wq);
} else {
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