From: Tejun Heo <tj@kernel.org>
Date: Tue, 29 Jun 2010 08:07:13 +0000 (+0200)
Subject: workqueue: implement WQ_NON_REENTRANT
X-Git-Tag: v2.6.36-rc1~506^2~31
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=18aa9effad4adb2c1efe123af4eb24fec9f59b30;p=pandora-kernel.git

workqueue: implement WQ_NON_REENTRANT

With gcwq managing all the workers and work->data pointing to the last
gcwq it was on, non-reentrance can be easily implemented by checking
whether the work is still running on the previous gcwq on queueing.
Implement it.

Signed-off-by: Tejun Heo <tj@kernel.org>
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