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bridge: Use RCU list primitive in __br_mdb_ip_get

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As Paul McKenney correctly pointed out, __br_mdb_ip_get needs
to use the RCU list walking primitive in order to work correctly
on platforms where data-dependency ordering is not guaranteed.

Reported-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Herbert Xu 2010-03-05 21:07:39 +00:00 committed by David S. Miller
parent 0c9a2ac1f8
commit 49f5fcfd4a
1 changed files with 1 additions and 1 deletions
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2
net/bridge/br_multicast.c
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@ -38,7 +38,7 @@ static struct net_bridge_mdb_entry *__br_mdb_ip_get(
struct net_bridge_mdb_entry *mp;
struct hlist_node *p;
hlist_for_each_entry(mp, p, &mdb->mhash[hash], hlist[mdb->ver]) {
hlist_for_each_entry_rcu(mp, p, &mdb->mhash[hash], hlist[mdb->ver]) {
if (dst == mp->addr)
return mp;
}