diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 2bd4f7590c83160ca66cabb672bc84a829f6b135..b3b3142f173426feb09c4a6ff116795e2fa025a5 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -2543,12 +2543,6 @@ record_old_file_extents(struct inode *inode,
 	return NULL;
 }
 
-/*
- * helper function for btrfs_finish_ordered_io, this
- * just reads in some of the csum leaves to prime them into ram
- * before we start the transaction.  It limits the amount of btree
- * reads required while inside the transaction.
- */
 /* as ordered data IO finishes, this gets called so we can finish
  * an ordered extent if the range of bytes in the file it covers are
  * fully written.