linux-kernel - [PATCH 09/36] net,rcu: convert call_rcu(ip_mc_socklist_reclaim) to kfree

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Message-ID: <4D82D544.6090509@cn.fujitsu.com>
Date:	Fri, 18 Mar 2011 11:45:08 +0800
From:	Lai Jiangshan <laijs@...fujitsu.com>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...e.hu>, Jens Axboe <axboe@...nel.dk>,
	Robert Love <robert.w.love@...el.com>,
	"James E.J. Bottomley" <James.Bottomley@...e.de>,
	Neil Horman <nhorman@...driver.com>,
	"David S. Miller" <davem@...emloft.net>,
	Alexey Kuznetsov <kuznet@....inr.ac.ru>,
	"Pekka Savola (ipv6)" <pekkas@...core.fi>,
	James Morris <jmorris@...ei.org>,
	Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
	Patrick McHardy <kaber@...sh.net>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Stephen Hemminger <shemminger@...tta.com>,
	Tejun Heo <tj@...nel.org>, Jarek Poplawski <jarkao2@...il.com>,
	linux-kernel@...r.kernel.org, devel@...n-fcoe.org,
	linux-scsi@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH 09/36] 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@...fujitsu.com>
---
 net/ipv4/igmp.c |   12 ++----------
 1 files changed, 2 insertions(+), 10 deletions(-)

diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index cf98a36..998dff0 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();
 }
-- 
1.7.4
--
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