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authorStephen Hemminger <shemminger@vyatta.com>2011-08-01 16:19:00 +0000
committerDavid S. Miller <davem@davemloft.net>2011-08-02 04:29:23 -0700
commita9b3cd7f323b2e57593e7215362a7b02fc933e3a (patch)
treeeba1741956aef3015d5b1a07253bf93c4c1bc7df /net/ipv6/ip6_tunnel.c
parent76f793e3a47139d340185cbc1a314740c09b13d3 (diff)
rcu: convert uses of rcu_assign_pointer(x, NULL) to RCU_INIT_POINTER
When assigning a NULL value to an RCU protected pointer, no barrier is needed. The rcu_assign_pointer, used to handle that but will soon change to not handle the special case. Convert all rcu_assign_pointer of NULL value. //smpl @@ expression P; @@ - rcu_assign_pointer(P, NULL) + RCU_INIT_POINTER(P, NULL) // </smpl> Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/ip6_tunnel.c')
-rw-r--r--net/ipv6/ip6_tunnel.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index 6fb1fb3624b..694d70a8a0e 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -218,8 +218,8 @@ ip6_tnl_link(struct ip6_tnl_net *ip6n, struct ip6_tnl *t)
{
struct ip6_tnl __rcu **tp = ip6_tnl_bucket(ip6n, &t->parms);
- rcu_assign_pointer(t->next , rtnl_dereference(*tp));
- rcu_assign_pointer(*tp, t);
+ RCU_INIT_POINTER(t->next , rtnl_dereference(*tp));
+ RCU_INIT_POINTER(*tp, t);
}
/**
@@ -237,7 +237,7 @@ ip6_tnl_unlink(struct ip6_tnl_net *ip6n, struct ip6_tnl *t)
(iter = rtnl_dereference(*tp)) != NULL;
tp = &iter->next) {
if (t == iter) {
- rcu_assign_pointer(*tp, t->next);
+ RCU_INIT_POINTER(*tp, t->next);
break;
}
}
@@ -350,7 +350,7 @@ ip6_tnl_dev_uninit(struct net_device *dev)
struct ip6_tnl_net *ip6n = net_generic(net, ip6_tnl_net_id);
if (dev == ip6n->fb_tnl_dev)
- rcu_assign_pointer(ip6n->tnls_wc[0], NULL);
+ RCU_INIT_POINTER(ip6n->tnls_wc[0], NULL);
else
ip6_tnl_unlink(ip6n, t);
ip6_tnl_dst_reset(t);
@@ -1440,7 +1440,7 @@ static int __net_init ip6_fb_tnl_dev_init(struct net_device *dev)
t->parms.proto = IPPROTO_IPV6;
dev_hold(dev);
- rcu_assign_pointer(ip6n->tnls_wc[0], t);
+ RCU_INIT_POINTER(ip6n->tnls_wc[0], t);
return 0;
}