From: Ming Lei <ming.lei@redhat.com>
Date: Sat, 30 Sep 2017 19:46:48 +0800
Subject: [PATCH] dm mpath: remove annoying message of 'blk_get_request()
 returned -11'
Git-commit: 9dc112e2daf87b40607fd8d357e2d7de32290d45
Patch-Mainline: v4.15-rc1
References: bsc#1077989

It is very normal to see allocation failure, especially with blk-mq
request_queues, so it's unnecessary to report this error and annoy
people.

In practice this 'blk_get_request() returned -11' error gets logged
quite frequently when a blk-mq DM multipath device sees heavy IO.

This change is marked for stable@ because the annoying message in
question was included in stable@ commit 7083abbbf.

Fixes: 7083abbbf ("dm mpath: avoid that path removal can trigger an infinite loop")
Cc: stable@vger.kernel.org
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Acked-by: Hannes Reinecke <hare@suse.com>
---
 drivers/md/dm-mpath.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index 11f273d2f018..e8094d8fbe0d 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -499,8 +499,6 @@ static int multipath_clone_and_map(struct dm_target *ti, struct request *rq,
 	if (IS_ERR(clone)) {
 		/* EBUSY, ENODEV or EWOULDBLOCK: requeue */
 		bool queue_dying = blk_queue_dying(q);
-		DMERR_LIMIT("blk_get_request() returned %ld%s - requeuing",
-			    PTR_ERR(clone), queue_dying ? " (path offline)" : "");
 		if (queue_dying) {
 			atomic_inc(&m->pg_init_in_progress);
 			activate_or_offline_path(pgpath);
-- 
2.12.3