--- zzzz-none-000/linux-4.4.60/drivers/md/dm.c	2017-04-08 07:53:53.000000000 +0000
+++ scorpion-7490-727/linux-4.4.60/drivers/md/dm.c	2021-02-04 17:41:59.000000000 +0000
@@ -1146,7 +1146,7 @@
  * Must be called without clone's queue lock held,
  * see end_clone_request() for more details.
  */
-static void dm_end_request(struct request *clone, int error)
+void dm_end_request(struct request *clone, int error)
 {
 	int rw = rq_data_dir(clone);
 	struct dm_rq_target_io *tio = clone->end_io_data;