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Commit 3260155a authored by Stephen Hemminger's avatar Stephen Hemminger Committed by David S. Miller
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failover: change mtu has RTNL 



When changing MTU, RTNL is held so use rtnl_dereference
instead of rcu_dereference.

Signed-off-by: default avatarStephen Hemminger <stephen@networkplumber.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4b09384a

drivers/net/net_failover.c

+2 −2
Original line number Diff line number Diff line
@@ -220,14 +220,14 @@ static int net_failover_change_mtu(struct net_device *dev, int new_mtu) 
	struct net_device *primary_dev, *standby_dev;

	int ret = 0;



	primary_dev = rcu_dereference(nfo_info->primary_dev);

	primary_dev = rtnl_dereference(nfo_info->primary_dev);

	if (primary_dev) {

		ret = dev_set_mtu(primary_dev, new_mtu);

		if (ret)

			return ret;

	}



	standby_dev = rcu_dereference(nfo_info->standby_dev);

	standby_dev = rtnl_dereference(nfo_info->standby_dev);

	if (standby_dev) {

		ret = dev_set_mtu(standby_dev, new_mtu);

		if (ret) {