Commit 49f5fcfd authored by Herbert Xu's avatar Herbert Xu Committed by David S. Miller

bridge: Use RCU list primitive in __br_mdb_ip_get

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: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0c9a2ac1
...@@ -38,7 +38,7 @@ static struct net_bridge_mdb_entry *__br_mdb_ip_get( ...@@ -38,7 +38,7 @@ static struct net_bridge_mdb_entry *__br_mdb_ip_get(
struct net_bridge_mdb_entry *mp; struct net_bridge_mdb_entry *mp;
struct hlist_node *p; 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) if (dst == mp->addr)
return mp; return mp;
} }
......
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