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>
diff --git a/net/decnet/dn_dev.c b/net/decnet/dn_dev.c
index ba4face..2ab16e1 100644
--- a/net/decnet/dn_dev.c
+++ b/net/decnet/dn_dev.c
@@ -388,7 +388,7 @@
}
ifa->ifa_next = dn_db->ifa_list;
- rcu_assign_pointer(dn_db->ifa_list, ifa);
+ RCU_INIT_POINTER(dn_db->ifa_list, ifa);
dn_ifaddr_notify(RTM_NEWADDR, ifa);
blocking_notifier_call_chain(&dnaddr_chain, NETDEV_UP, ifa);
@@ -1093,7 +1093,7 @@
memcpy(&dn_db->parms, p, sizeof(struct dn_dev_parms));
- rcu_assign_pointer(dev->dn_ptr, dn_db);
+ RCU_INIT_POINTER(dev->dn_ptr, dn_db);
dn_db->dev = dev;
init_timer(&dn_db->timer);
@@ -1101,7 +1101,7 @@
dn_db->neigh_parms = neigh_parms_alloc(dev, &dn_neigh_table);
if (!dn_db->neigh_parms) {
- rcu_assign_pointer(dev->dn_ptr, NULL);
+ RCU_INIT_POINTER(dev->dn_ptr, NULL);
kfree(dn_db);
return NULL;
}