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-rw-r--r--fs/btrfs/raid56.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/btrfs/raid56.c b/fs/btrfs/raid56.c
index fcf7265ca..1a33d3eb3 100644
--- a/fs/btrfs/raid56.c
+++ b/fs/btrfs/raid56.c
@@ -810,7 +810,11 @@ static noinline void unlock_stripe(struct btrfs_raid_bio *rbio)
}
goto done_nolock;
- } else if (waitqueue_active(&h->wait)) {
+ /*
+ * The barrier for this waitqueue_active is not needed,
+ * we're protected by h->lock and can't miss a wakeup.
+ */
+ } else if (waitqueue_active(&h->wait)) {
spin_unlock(&rbio->bio_list_lock);
spin_unlock_irqrestore(&h->lock, flags);
wake_up(&h->wait);