linux-kernel - [PATCH tip/core/rcu 64/86] net,rcu: convert call_rcu(__nf_ct_ext_free_rcu) to kfree

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Date:	Sun,  1 May 2011 06:21:44 -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 64/86] net,rcu: convert call_rcu(__nf_ct_ext_free_rcu) to kfree_rcu()

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

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

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/netfilter/nf_conntrack_extend.c |    8 +-------
 1 files changed, 1 insertions(+), 7 deletions(-)

diff --git a/net/netfilter/nf_conntrack_extend.c b/net/netfilter/nf_conntrack_extend.c
index 80a23ed..05ecdc2 100644
--- a/net/netfilter/nf_conntrack_extend.c
+++ b/net/netfilter/nf_conntrack_extend.c
@@ -68,12 +68,6 @@ nf_ct_ext_create(struct nf_ct_ext **ext, enum nf_ct_ext_id id, gfp_t gfp)
 	return (void *)(*ext) + off;
 }
 
-static void __nf_ct_ext_free_rcu(struct rcu_head *head)
-{
-	struct nf_ct_ext *ext = container_of(head, struct nf_ct_ext, rcu);
-	kfree(ext);
-}
-
 void *__nf_ct_ext_add(struct nf_conn *ct, enum nf_ct_ext_id id, gfp_t gfp)
 {
 	struct nf_ct_ext *old, *new;
@@ -114,7 +108,7 @@ void *__nf_ct_ext_add(struct nf_conn *ct, enum nf_ct_ext_id id, gfp_t gfp)
 					(void *)old + old->offset[i]);
 			rcu_read_unlock();
 		}
-		call_rcu(&old->rcu, __nf_ct_ext_free_rcu);
+		kfree_rcu(old, rcu);
 		ct->ext = new;
 	}
 
-- 
1.7.3.2

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