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net: treewide use of RCU_INIT_POINTER

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rcu_assign_pointer(ptr, NULL) can be safely replaced by
RCU_INIT_POINTER(ptr, NULL)

(old rcu_assign_pointer() macro was testing the NULL value and could
omit the smp_wmb(), but this had to be removed because of compiler
warnings)

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
2011-11-23 07:09:32 +00:00
committed by David S. Miller
parent 8c2152286a
commit 2cfa5a0471
9 changed files with 21 additions and 21 deletions
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4
net/core/netprio_cgroup.c
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@@ -285,7 +285,7 @@ static int netprio_device_event(struct notifier_block *unused,
break;
case NETDEV_UNREGISTER:
old = rtnl_dereference(dev->priomap);
rcu_assign_pointer(dev->priomap, NULL);
RCU_INIT_POINTER(dev->priomap, NULL);
if (old)
kfree_rcu(old, rcu);
break;
@@ -332,7 +332,7 @@ static void __exit exit_cgroup_netprio(void)
rtnl_lock();
for_each_netdev(&init_net, dev) {
old = rtnl_dereference(dev->priomap);
rcu_assign_pointer(dev->priomap, NULL);
RCU_INIT_POINTER(dev->priomap, NULL);
if (old)
kfree_rcu(old, rcu);
}