From: Lai Jiangshan <laijs@cn.fujitsu.com>
Date: Tue, 15 Mar 2011 10:01:42 +0000 (+0800)
Subject: net,rcu: convert call_rcu(listeners_free_rcu) to kfree_rcu()
X-Git-Tag: firefly_0821_release~7613^2~1382^2~35
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=37b6b935e96e837ccc60812c03e9f92e7dce2e61;p=firefly-linux-kernel-4.4.55.git

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 c8f35b5d2ee9..5fe4f3b04ed3 100644
--- 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;