From: Keith Busch <keith.busch@intel.com>
Date: Thu, 8 Jan 2015 01:55:44 +0000 (-0700)
Subject: blk-mq: Let drivers cancel requeue_work
X-Git-Tag: omap-for-v4.1/prcm-dts-mfd-syscon-fix~284^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c68ed59f534c318716c6189050af3c5ea03b8071;p=pandora-kernel.git

blk-mq: Let drivers cancel requeue_work

Kicking requeued requests will start h/w queues in a work_queue, which
may alter the driver's requested state to temporarily stop them. This
patch exports a method to cancel the q->requeue_work so a driver can be
assured stopped h/w queues won't be started up before it is ready.

Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
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