Patch "dm mpath: remove annoying message of 'blk_get_request() returned -11'" has been added to the 4.14-stable tree

Patch "dm mpath: remove annoying message of 'blk_get_request() returned -11'" has been added to the 4.14-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    dm mpath: remove annoying message of 'blk_get_request() returned -11'

to the 4.14-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     dm-mpath-remove-annoying-message-of-blk_get_request-returned-11.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 9dc112e2daf87b40607fd8d357e2d7de32290d45 Mon Sep 17 00:00:00 2001
From: Ming Lei <ming.lei@redhat.com>
Date: Sat, 30 Sep 2017 19:46:48 +0800
Subject: dm mpath: remove annoying message of 'blk_get_request() returned -11'

From: Ming Lei <ming.lei@redhat.com>

commit 9dc112e2daf87b40607fd8d357e2d7de32290d45 upstream.

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")
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/md/dm-mpath.c |    2 --
 1 file changed, 2 deletions(-)

--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -499,8 +499,6 @@ static int multipath_clone_and_map(struc
 	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);


Patches currently in stable-queue which might be from ming.lei@redhat.com are

queue-4.14/dm-mpath-remove-annoying-message-of-blk_get_request-returned-11.patch