From mboxrd@z Thu Jan  1 00:00:00 1970
From: hch@lst.de (Christoph Hellwig)
Date: Mon, 23 Nov 2015 21:48:42 +0100
Subject: [PATCH 03/47] block: defer timeouts to a workqueue
In-Reply-To: <x49r3jgmp97.fsf@segfault.boston.devel.redhat.com>
References: <1448037342-18384-1-git-send-email-hch@lst.de>
 <1448037342-18384-4-git-send-email-hch@lst.de>
 <x49r3jgmp97.fsf@segfault.boston.devel.redhat.com>
Message-ID: <20151123204842.GA18721@lst.de>

On Mon, Nov 23, 2015@03:31:32PM -0500, Jeff Moyer wrote:
> I don't see where the blk-mq timeout work is ever scheduled.  You
> removed the call to setup_timer for the mq case, so what causes the mq
> timeout work to run?  I must be missing something.

No we use the timer which we initialize in blk_alloc_queue_node instead
of overwriting it later in the blk-mq case.  The timer gets added in
blk_add_timer either way.