diff options
| author | Stephen Hemminger <shemminger@vyatta.com> | 2011-08-01 16:19:00 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-08-02 04:29:23 -0700 |
| commit | a9b3cd7f323b2e57593e7215362a7b02fc933e3a (patch) | |
| tree | eba1741956aef3015d5b1a07253bf93c4c1bc7df /net/socket.c | |
| parent | 76f793e3a47139d340185cbc1a314740c09b13d3 (diff) | |
| download | lwn-a9b3cd7f323b2e57593e7215362a7b02fc933e3a.tar.gz lwn-a9b3cd7f323b2e57593e7215362a7b02fc933e3a.zip | |
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/socket.c')
| -rw-r--r-- | net/socket.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/socket.c b/net/socket.c index b1cbbcd92558..7ec8f9b669b3 100644 --- a/net/socket.c +++ b/net/socket.c @@ -2463,7 +2463,7 @@ int sock_register(const struct net_proto_family *ops) lockdep_is_held(&net_family_lock))) err = -EEXIST; else { - rcu_assign_pointer(net_families[ops->family], ops); + RCU_INIT_POINTER(net_families[ops->family], ops); err = 0; } spin_unlock(&net_family_lock); @@ -2491,7 +2491,7 @@ void sock_unregister(int family) BUG_ON(family < 0 || family >= NPROTO); spin_lock(&net_family_lock); - rcu_assign_pointer(net_families[family], NULL); + RCU_INIT_POINTER(net_families[family], NULL); spin_unlock(&net_family_lock); synchronize_rcu(); |