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authorEric Dumazet <eric.dumazet@gmail.com>2009-11-04 16:43:23 +0300
committerDavid S. Miller <davem@davemloft.net>2009-11-04 16:43:23 +0300
commitc6d14c84566d6b70ad9dc1618db0dec87cca9300 (patch)
tree5ec75245cfda4d61e6b4506b6217f047ff4af01a /net/ipv6/anycast.c
parentd0075634cf9d288988f57392a1f132d2053af961 (diff)
downloadlinux-c6d14c84566d6b70ad9dc1618db0dec87cca9300.tar.xz
net: Introduce for_each_netdev_rcu() iterator
Adds RCU management to the list of netdevices. Convert some for_each_netdev() users to RCU version, if it can avoid read_lock-ing dev_base_lock Ie: read_lock(&dev_base_loack); for_each_netdev(net, dev) some_action(); read_unlock(&dev_base_lock); becomes : rcu_read_lock(); for_each_netdev_rcu(net, dev) some_action(); rcu_read_unlock(); Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/anycast.c')
-rw-r--r--net/ipv6/anycast.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/net/ipv6/anycast.c b/net/ipv6/anycast.c
index 1ae58bec1de0..2f00ca83f049 100644
--- a/net/ipv6/anycast.c
+++ b/net/ipv6/anycast.c
@@ -404,13 +404,13 @@ int ipv6_chk_acast_addr(struct net *net, struct net_device *dev,
if (dev)
return ipv6_chk_acast_dev(dev, addr);
- read_lock(&dev_base_lock);
- for_each_netdev(net, dev)
+ rcu_read_lock();
+ for_each_netdev_rcu(net, dev)
if (ipv6_chk_acast_dev(dev, addr)) {
found = 1;
break;
}
- read_unlock(&dev_base_lock);
+ rcu_read_unlock();
return found;
}