__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>

__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>
Eric Dumazet · David S. Miller
1 parent da2033c282
Showing 1 changed file with 1 additions and 1 deletions Side-by-side Diff
include/linux/inetdevice.h
@@ -222,7 +222,7 @@
  
 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);
...	...	@@ -222,7 +222,7 @@
222	222
223	223	static inline struct in_device __in_dev_get_rtnl(const struct net_device dev)
224	224	{
225		- return rcu_dereference_check(dev->ip_ptr, lockdep_rtnl_is_held());
	225	+ return rtnl_dereference(dev->ip_ptr);
226	226	}
227	227
228	228	extern void in_dev_finish_destroy(struct in_device *idev);