From: Lai Jiangshan <laijs@cn.fujitsu.com>
Date: Mon, 25 Mar 2013 23:57:18 +0000 (-0700)
Subject: workqueue: protect wq->nr_drainers and ->flags with wq->mutex
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~125^2~23
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=87fc741e94cf64445c698486982b30afa0811eca;p=pandora-kernel.git

workqueue: protect wq->nr_drainers and ->flags with wq->mutex

We're expanding wq->mutex to cover all fields specific to each
workqueue with the end goal of replacing pwq_lock which will make
locking simpler and easier to understand.

wq->nr_drainers and ->flags are specific to each workqueue.  Protect
->nr_drainers and ->flags with wq->mutex instead of pool_mutex.

tj: Rebased on top of the current dev branch.  Updated description.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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