From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Wed, 4 Nov 2009 13:43:23 +0000 (-0800)
Subject: net: Introduce for_each_netdev_rcu() iterator
X-Git-Tag: v2.6.33-rc1~388^2~517
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c6d14c84566d6b70ad9dc1618db0dec87cca9300;p=pandora-kernel.git

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>
---

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