From: Priyanka Jain <Priyanka.Jain@freescale.com>
Date: Sun, 12 Aug 2012 21:22:29 +0000 (+0000)
Subject: Replace rwlock on xfrm_policy_afinfo with rcu
X-Git-Tag: omap-for-v3.7-rc1/fixes-cpufreq-signed~47^2~344
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=418a99ac6ad487dc9c42e6b0e85f941af56330f2;p=pandora-kernel.git

Replace rwlock on xfrm_policy_afinfo with rcu

xfrm_policy_afinfo is read mosly data structure.
Write on xfrm_policy_afinfo is done only at the
time of configuration.
So rwlocks can be safely replaced with RCU.

RCUs usage optimizes the performance.

Signed-off-by: Priyanka Jain <Priyanka.Jain@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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