net: treewide use of RCU_INIT_POINTER

rcu_assign_pointer(ptr, NULL) can be safely replaced by
RCU_INIT_POINTER(ptr, NULL)

(old rcu_assign_pointer() macro was testing the NULL value and could
omit the smp_wmb(), but this had to be removed because of compiler
warnings)

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c
index 1b7082d08f33..7c88d136e723 100644
--- a/drivers/net/macvtap.c
+++ b/drivers/net/macvtap.c
@@ -145,8 +145,8 @@ static void macvtap_put_queue(struct macvtap_queue *q)
         if (vlan) {
                 int index = get_slot(vlan, q);
 
-                rcu_assign_pointer(vlan->taps[index], NULL);
-                rcu_assign_pointer(q->vlan, NULL);
+                RCU_INIT_POINTER(vlan->taps[index], NULL);
+                RCU_INIT_POINTER(q->vlan, NULL);
                 sock_put(&q->sk);
                 --vlan->numvtaps;
         }
@@ -223,8 +223,8 @@ static void macvtap_del_queues(struct net_device *dev)
                                               lockdep_is_held(&macvtap_lock));
                 if (q) {
                         qlist[j++] = q;
-                        rcu_assign_pointer(vlan->taps[i], NULL);
-                        rcu_assign_pointer(q->vlan, NULL);
+                        RCU_INIT_POINTER(vlan->taps[i], NULL);
+                        RCU_INIT_POINTER(q->vlan, NULL);
                         vlan->numvtaps--;
                 }
         }