diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 11fccf2fcb1f386ee29ac6cda9a9c0da7246e23c..5750cd9df417ea2ae744c41c696aad24e61325ca 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -319,7 +319,6 @@ static struct btrfs_device *__alloc_device(void)
 
 	spin_lock_init(&dev->io_lock);
 
-	spin_lock_init(&dev->reada_lock);
 	atomic_set(&dev->reada_in_flight, 0);
 	atomic_set(&dev->dev_stats_ccnt, 0);
 	btrfs_device_data_ordered_init(dev);
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index 15216fed918bfeb3a77375ea1593c62991d0bf07..28c28eeadff39da01f697b870b545c79291e37dd 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -137,7 +137,6 @@ struct btrfs_device {
 	struct rcu_head rcu;
 
 	/* readahead state */
-	spinlock_t reada_lock;
 	atomic_t reada_in_flight;
 	u64 reada_next;
 	struct reada_zone *reada_curr_zone;