Commit 4c82a95e authored by Florian Westphal's avatar Florian Westphal Committed by David S. Miller
Browse files

rtnetlink: rtnl_have_link_slave_info doesn't need rtnl 



it can be switched to rcu.

Reviewed-by: default avatarDavid Ahern <dsahern@gmail.com>
Signed-off-by: default avatarFlorian Westphal <fw@strlen.de>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b1e66b9a

net/core/rtnetlink.c

+7 −3
Original line number Diff line number Diff line
@@ -522,11 +522,15 @@ static size_t rtnl_link_get_af_size(const struct net_device *dev, 
static bool rtnl_have_link_slave_info(const struct net_device *dev)

{

	struct net_device *master_dev;

	bool ret = false;



	master_dev = netdev_master_upper_dev_get((struct net_device *) dev);

	rcu_read_lock();



	master_dev = netdev_master_upper_dev_get_rcu((struct net_device *)dev);

	if (master_dev && master_dev->rtnl_link_ops)

		return true;

	return false;

		ret = true;

	rcu_read_unlock();

	return ret;

}



static int rtnl_link_slave_info_fill(struct sk_buff *skb,