From: David S. Miller <davem@davemloft.net>
Date: Tue, 5 Oct 2010 07:29:48 +0000 (-0700)
Subject: net: relax rtnl_dereference()
X-Git-Tag: v2.6.37-rc1~147^2~250
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=29fa060eab3f524d338566d34c1d9e704579ae5e;p=pandora-kernel.git

net: relax rtnl_dereference()

rtnl_dereference() is used in contexts where RTNL is held, to fetch an
RCU protected pointer.

Updates to this pointer are prevented by RTNL, so we dont need
smp_read_barrier_depends() and the ACCESS_ONCE() provided in
rcu_dereference_check().

rtnl_dereference() is mainly a macro to document the locking invariant.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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