Patch "blk-mq: set default timeout as 30 seconds" has been added to the 4.1-stable tree

Patch "blk-mq: set default timeout as 30 seconds" has been added to the 4.1-stable tree

[gregkh]

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

    blk-mq: set default timeout as 30 seconds

to the 4.1-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:
     blk-mq-set-default-timeout-as-30-seconds.patch
and it can be found in the queue-4.1 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 e56f698bd0720e17f10f39e8b0b5b446ad0ab22c Mon Sep 17 00:00:00 2001
From: Ming Lei <ming.lei@canonical.com>
Date: Thu, 16 Jul 2015 19:53:22 +0800
Subject: blk-mq: set default timeout as 30 seconds

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

commit e56f698bd0720e17f10f39e8b0b5b446ad0ab22c upstream.

It is reasonable to set default timeout of request as 30 seconds instead of
30000 ticks, which may be 300 seconds if HZ is 100, for example, some arm64
based systems may choose 100 HZ.

Signed-off-by: Ming Lei <ming.lei@canonical.com>
Fixes: c76cbbcf4044 ("blk-mq: put blk_queue_rq_timeout together in blk_mq_init_queue()"
Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 block/blk-mq.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1968,7 +1968,7 @@ struct request_queue *blk_mq_init_alloca
 		goto err_hctxs;
 
 	setup_timer(&q->timeout, blk_mq_rq_timer, (unsigned long) q);
-	blk_queue_rq_timeout(q, set->timeout ? set->timeout : 30000);
+	blk_queue_rq_timeout(q, set->timeout ? set->timeout : 30 * HZ);
 
 	q->nr_queues = nr_cpu_ids;
 	q->nr_hw_queues = set->nr_hw_queues;


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

queue-4.1/blk-mq-set-default-timeout-as-30-seconds.patch