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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/ipv4/ipmr.c
parent76f793e3a47139d340185cbc1a314740c09b13d3 (diff)
downloadlinux-a9b3cd7f323b2e57593e7215362a7b02fc933e3a.tar.bz2
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/ipv4/ipmr.c')
-rw-r--r--net/ipv4/ipmr.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index 58e879157976..f550285c977b 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -1176,7 +1176,7 @@ static void mrtsock_destruct(struct sock *sk)
ipmr_for_each_table(mrt, net) {
if (sk == rtnl_dereference(mrt->mroute_sk)) {
IPV4_DEVCONF_ALL(net, MC_FORWARDING)--;
- rcu_assign_pointer(mrt->mroute_sk, NULL);
+ RCU_INIT_POINTER(mrt->mroute_sk, NULL);
mroute_clean_tables(mrt);
}
}
@@ -1224,7 +1224,7 @@ int ip_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, unsi
ret = ip_ra_control(sk, 1, mrtsock_destruct);
if (ret == 0) {
- rcu_assign_pointer(mrt->mroute_sk, sk);
+ RCU_INIT_POINTER(mrt->mroute_sk, sk);
IPV4_DEVCONF_ALL(net, MC_FORWARDING)++;
}
rtnl_unlock();