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Commit 06a9701f authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller
Browse files

__in_dev_get_rtnl() can use rtnl_dereference() 



If caller holds RTNL, we dont need a memory barrier
(smp_read_barrier_depends) included in rcu_dereference().

Just use rtnl_dereference() to properly document the assertions.

Signed-off-by: default avatarEric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent da2033c2

include/linux/inetdevice.h

+1 −1
Original line number Original line Diff line number Diff line
@@ -222,7 +222,7 @@ static inline struct in_device *in_dev_get(const struct net_device *dev) 




static inline struct in_device *__in_dev_get_rtnl(const struct net_device *dev)

static inline struct in_device *__in_dev_get_rtnl(const struct net_device *dev)

{

{

	return rcu_dereference_check(dev->ip_ptr, lockdep_rtnl_is_held());

	return rtnl_dereference(dev->ip_ptr);

}

}





extern void in_dev_finish_destroy(struct in_device *idev);

extern void in_dev_finish_destroy(struct in_device *idev);