[DECNET] ROUTE: fix rcu_dereference() uses in /proc/net/decnet_cache
authorEric Dumazet <dada1@cosmosbay.com>
Fri, 11 Jan 2008 06:35:21 +0000 (22:35 -0800)
committerDavid S. Miller <davem@davemloft.net>
Fri, 11 Jan 2008 06:35:21 +0000 (22:35 -0800)
commit0d89d7944fead211422e21fb7ea70ed3b903a79e
tree78886ab5b6397fa4446e251ffdfe3f1329947792
parent5c5482266537fdb24d6b8462540d8f65a6007a97
[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>
net/decnet/dn_route.c