[BRIDGE]: forwarding remove unneeded preempt and bh diasables
Optimize the forwarding and transmit paths. Both places are
called with bottom half/no preempt so there is no need to use
spin_lock_bh or rcu_read_lock.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index 1f08a59..3a73b8c 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -341,7 +341,6 @@
if (hold_time(br) == 0)
return;
- rcu_read_lock();
fdb = fdb_find(head, addr);
if (likely(fdb)) {
/* attempt to update an entry for a local interface */
@@ -356,13 +355,12 @@
fdb->ageing_timer = jiffies;
}
} else {
- spin_lock_bh(&br->hash_lock);
+ spin_lock(&br->hash_lock);
if (!fdb_find(head, addr))
fdb_create(head, source, addr, 0);
/* else we lose race and someone else inserts
* it first, don't bother updating
*/
- spin_unlock_bh(&br->hash_lock);
+ spin_unlock(&br->hash_lock);
}
- rcu_read_unlock();
}