net,rcu: convert call_rcu(listeners_free_rcu) to kfree_rcu()

The rcu callback listeners_free_rcu() just calls a kfree(),
so we use kfree_rcu() instead of the call_rcu(listeners_free_rcu).

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>

diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index c8f35b5..5fe4f3b 100644 (file)
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1566,12 +1566,6 @@ netlink_kernel_release(struct sock *sk)
 }
 EXPORT_SYMBOL(netlink_kernel_release);
 
-
-static void listeners_free_rcu(struct rcu_head *head)
-{
-       kfree(container_of(head, struct listeners, rcu));
-}
-
 int __netlink_change_ngroups(struct sock *sk, unsigned int groups)
 {
        struct listeners *new, *old;
@@ -1588,7 +1582,7 @@ int __netlink_change_ngroups(struct sock *sk, unsigned int groups)
                memcpy(new->masks, old->masks, NLGRPSZ(tbl->groups));
                rcu_assign_pointer(tbl->listeners, new);
 
-               call_rcu(&old->rcu, listeners_free_rcu);
+               kfree_rcu(old, rcu);
        }
        tbl->groups = groups;