From: Eric Dumazet <dada1@cosmosbay.com>
Date: Fri, 11 Jan 2008 06:35:21 +0000 (-0800)
Subject: [DECNET] ROUTE: fix rcu_dereference() uses in /proc/net/decnet_cache
X-Git-Tag: v2.6.24-rc8~7^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0d89d7944fead211422e21fb7ea70ed3b903a79e;p=pandora-kernel.git

[DECNET] ROUTE: fix rcu_dereference() uses in /proc/net/decnet_cache

In dn_rt_cache_get_next(), no need to guard seq->private by a
rcu_dereference() since seq is private to the thread running this
function. Reading seq.private once (as guaranted bu rcu_dereference())
or several time if compiler really is dumb enough wont change the
result.

But we miss real spots where rcu_dereference() are needed, both in
dn_rt_cache_get_first() and dn_rt_cache_get_next()

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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