netdev - [PATCH] tcp_memcg: remove useless var old

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Message-Id: <1385102920-31215-1-git-send-email-gaofeng@cn.fujitsu.com>
Date:	Fri, 22 Nov 2013 14:48:40 +0800
From:	Gao feng <gaofeng@...fujitsu.com>
To:	netdev@...r.kernel.org
Cc:	glommer@...allels.com, Gao feng <gaofeng@...fujitsu.com>
Subject: [PATCH] tcp_memcg: remove useless var old_lim

nobody needs it. remove.

Signed-off-by: Gao feng <gaofeng@...fujitsu.com>
---
 net/ipv4/tcp_memcontrol.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/net/ipv4/tcp_memcontrol.c b/net/ipv4/tcp_memcontrol.c
index 03e9154..269a89e 100644
--- a/net/ipv4/tcp_memcontrol.c
+++ b/net/ipv4/tcp_memcontrol.c
@@ -60,7 +60,6 @@ EXPORT_SYMBOL(tcp_destroy_cgroup);
 static int tcp_update_limit(struct mem_cgroup *memcg, u64 val)
 {
 	struct cg_proto *cg_proto;
-	u64 old_lim;
 	int i;
 	int ret;
 
@@ -71,7 +70,6 @@ static int tcp_update_limit(struct mem_cgroup *memcg, u64 val)
 	if (val > RES_COUNTER_MAX)
 		val = RES_COUNTER_MAX;
 
-	old_lim = res_counter_read_u64(&cg_proto->memory_allocated, RES_LIMIT);
 	ret = res_counter_set_limit(&cg_proto->memory_allocated, val);
 	if (ret)
 		return ret;
-- 
1.8.3.1

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