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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/phonet/af_phonet.c
parentipv6: updates to privacy addresses per RFC 4941. (diff)
downloadlinux-dev-a9b3cd7f323b2e57593e7215362a7b02fc933e3a.tar.xz
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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/phonet/af_phonet.c')
-rw-r--r--net/phonet/af_phonet.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/phonet/af_phonet.c b/net/phonet/af_phonet.c
index c6fffd946d42..bf10ea8fbbf9 100644
--- a/net/phonet/af_phonet.c
+++ b/net/phonet/af_phonet.c
@@ -480,7 +480,7 @@ int __init_or_module phonet_proto_register(unsigned int protocol,
if (proto_tab[protocol])
err = -EBUSY;
else
- rcu_assign_pointer(proto_tab[protocol], pp);
+ RCU_INIT_POINTER(proto_tab[protocol], pp);
mutex_unlock(&proto_tab_lock);
return err;
@@ -491,7 +491,7 @@ void phonet_proto_unregister(unsigned int protocol, struct phonet_protocol *pp)
{
mutex_lock(&proto_tab_lock);
BUG_ON(proto_tab[protocol] != pp);
- rcu_assign_pointer(proto_tab[protocol], NULL);
+ RCU_INIT_POINTER(proto_tab[protocol], NULL);
mutex_unlock(&proto_tab_lock);
synchronize_rcu();
proto_unregister(pp->prot);