linux-kernel - [PATCH tip/core/rcu 50/86] net,rcu: convert call_rcu(ip_mc_list_reclaim) to kfree

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Date:	Sun,  1 May 2011 06:21:30 -0700
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	linux-kernel@...r.kernel.org
Cc:	mingo@...e.hu, laijs@...fujitsu.com, dipankar@...ibm.com,
	akpm@...ux-foundation.org, mathieu.desnoyers@...ymtl.ca,
	josh@...htriplett.org, niv@...ibm.com, tglx@...utronix.de,
	peterz@...radead.org, rostedt@...dmis.org, Valdis.Kletnieks@...edu,
	dhowells@...hat.com, eric.dumazet@...il.com, darren@...art.com,
	patches@...aro.org, "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Subject: [PATCH tip/core/rcu 50/86] net,rcu: convert call_rcu(ip_mc_list_reclaim) to kfree_rcu()

From: Lai Jiangshan <laijs@...fujitsu.com>

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

Signed-off-by: Lai Jiangshan <laijs@...fujitsu.com>
Acked-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
---
 net/ipv4/igmp.c |    8 +-------
 1 files changed, 1 insertions(+), 7 deletions(-)

diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index 1fd3d9c..f22f30e 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -149,17 +149,11 @@ static void ip_mc_clear_src(struct ip_mc_list *pmc);
 static int ip_mc_add_src(struct in_device *in_dev, __be32 *pmca, int sfmode,
 			 int sfcount, __be32 *psfsrc, int delta);
 
-
-static void ip_mc_list_reclaim(struct rcu_head *head)
-{
-	kfree(container_of(head, struct ip_mc_list, rcu));
-}
-
 static void ip_ma_put(struct ip_mc_list *im)
 {
 	if (atomic_dec_and_test(&im->refcnt)) {
 		in_dev_put(im->interface);
-		call_rcu(&im->rcu, ip_mc_list_reclaim);
+		kfree_rcu(im, rcu);
 	}
 }
 
-- 
1.7.3.2

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