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__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: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2010-12-01 01:37:42 +00:00 committed by David S. Miller
parent da2033c282
commit 06a9701f4b
1 changed files with 1 additions and 1 deletions
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2
include/linux/inetdevice.h
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@ -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)
{
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);