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%3Ba=su...
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