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

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

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>

1 files changed, 2 insertions, 10 deletions

diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index 85a6e5d7063..8f62d66d085 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -1850,14 +1850,6 @@ static int ip_mc_leave_src(struct sock *sk, struct ip_mc_socklist *iml,
         return err;
 }
 
-
-static void ip_mc_socklist_reclaim(struct rcu_head *rp)
-{
-        kfree(container_of(rp, struct ip_mc_socklist, rcu));
-        /* sk_omem_alloc should have been decreased by the caller*/
-}
-
-
 /*
  *      Ask a socket to leave a group.
  */
@@ -1897,7 +1889,7 @@ int ip_mc_leave_group(struct sock *sk, struct ip_mreqn *imr)
                 rtnl_unlock();
                 /* decrease mem now to avoid the memleak warning */
                 atomic_sub(sizeof(*iml), &sk->sk_omem_alloc);
-                call_rcu(&iml->rcu, ip_mc_socklist_reclaim);
+                kfree_rcu(iml, rcu);
                 return 0;
         }
         if (!in_dev)
@@ -2312,7 +2304,7 @@ void ip_mc_drop_socket(struct sock *sk)
                         ip_mc_dec_group(in_dev, iml->multi.imr_multiaddr.s_addr);
                 /* decrease mem now to avoid the memleak warning */
                 atomic_sub(sizeof(*iml), &sk->sk_omem_alloc);
-                call_rcu(&iml->rcu, ip_mc_socklist_reclaim);
+                kfree_rcu(iml, rcu);
         }
         rtnl_unlock();
 }