From: Shaohua Li <shaohua.li@intel.com>
Date: Fri, 7 Jan 2011 07:48:28 +0000 (+0100)
Subject: block cfq: don't use atomic_t for cfq_group
X-Git-Tag: v2.6.38-rc1~231^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=329a67815b596d23daf0caa588ae0800e925320f;p=pandora-kernel.git

block cfq: don't use atomic_t for cfq_group

cfq_group->ref is used with queue_lock hold, the only exception is
cfq_set_request, which looks like a bug to me, so ref doesn't need
to be an atomic and atomic operation is slower.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
---

Reading git-diff-tree failed