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/phonet/pn_dev.c b/net/phonet/pn_dev.c
index d2df8f3..c582761 100644
--- a/net/phonet/pn_dev.c
+++ b/net/phonet/pn_dev.c
@@ -276,7 +276,7 @@
mutex_lock(&pnn->routes.lock);
for (i = 0; i < 64; i++)
if (dev == pnn->routes.table[i]) {
- rcu_assign_pointer(pnn->routes.table[i], NULL);
+ RCU_INIT_POINTER(pnn->routes.table[i], NULL);
set_bit(i, deleted);
}
mutex_unlock(&pnn->routes.lock);
@@ -390,7 +390,7 @@
daddr = daddr >> 2;
mutex_lock(&routes->lock);
if (routes->table[daddr] == NULL) {
- rcu_assign_pointer(routes->table[daddr], dev);
+ RCU_INIT_POINTER(routes->table[daddr], dev);
dev_hold(dev);
err = 0;
}
@@ -406,7 +406,7 @@
daddr = daddr >> 2;
mutex_lock(&routes->lock);
if (dev == routes->table[daddr])
- rcu_assign_pointer(routes->table[daddr], NULL);
+ RCU_INIT_POINTER(routes->table[daddr], NULL);
else
dev = NULL;
mutex_unlock(&routes->lock);
