From: Tejun Heo <tj@kernel.org>
Date: Wed, 9 Jan 2013 16:05:13 +0000 (-0800)
Subject: block: RCU free request_queue
X-Git-Tag: v3.9-rc1~44^2~12^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=548bc8e1b38e48653a90f48f636f8d253504f8a2;p=pandora-kernel.git

block: RCU free request_queue

RCU free request_queue so that blkcg_gq->q can be dereferenced under
RCU lock.  This will be used to implement hierarchical stats.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
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