diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index df79340..60e65df 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -4124,7 +4124,7 @@
  * returns target flags in extended format or 0 if restripe for this
  * chunk_type is not in progress
  *
- * should be called with either volume_mutex or balance_lock held
+ * should be called with balance_lock held
  */
 static u64 get_restripe_target(struct btrfs_fs_info *fs_info, u64 flags)
 {