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authorEric Dumazet <eric.dumazet@gmail.com>2009-11-04 14:43:23 +0100
committerDavid S. Miller <davem@davemloft.net>2009-11-04 14:43:23 +0100
commitc6d14c84566d6b70ad9dc1618db0dec87cca9300 (patch)
tree5ec75245cfda4d61e6b4506b6217f047ff4af01a /net/sctp
parentem_meta: avoid one dev_put() (diff)
downloadlinux-c6d14c84566d6b70ad9dc1618db0dec87cca9300.tar.xz
linux-c6d14c84566d6b70ad9dc1618db0dec87cca9300.zip
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/sctp')
-rw-r--r--net/sctp/protocol.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index d9f4cc2c7869..fe44c57101de 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -205,14 +205,14 @@ static void sctp_get_local_addr_list(void)
struct list_head *pos;
struct sctp_af *af;
- read_lock(&dev_base_lock);
- for_each_netdev(&init_net, dev) {
+ rcu_read_lock();
+ for_each_netdev_rcu(&init_net, dev) {
__list_for_each(pos, &sctp_address_families) {
af = list_entry(pos, struct sctp_af, list);
af->copy_addrlist(&sctp_local_addr_list, dev);
}
}
- read_unlock(&dev_base_lock);
+ rcu_read_unlock();
}
/* Free the existing local addresses. */