diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index 5667e282fd57..4d4046099e54 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -1204,11 +1204,6 @@ static int find_parent_nodes(struct btrfs_trans_handle *trans,
 	if (time_seq == BTRFS_SEQ_LAST)
 		path->skip_locking = 1;
 
-	/*
-	 * grab both a lock on the path and a lock on the delayed ref head.
-	 * We need both to get a consistent picture of how the refs look
-	 * at a specified point in time
-	 */
 again:
 	head = NULL;
 
@@ -1224,8 +1219,10 @@ again:
 	if (trans && time_seq != BTRFS_SEQ_LAST) {
 #endif
 		/*
-		 * look if there are updates for this ref queued and lock the
-		 * head
+		 * We have a specific time_seq we care about and trans which
+		 * means we have the path lock, we need to grab the ref head and
+		 * lock it so we have a consistent view of the refs at the given
+		 * time.
 		 */
 		delayed_refs = &trans->transaction->delayed_refs;
 		spin_lock(&delayed_refs->lock);