netdev - [patch -next] tcp_memcontrol: fix reversed if condition

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Message-ID: <20111215110510.GA2674@elgon.mountain>
Date:	Thu, 15 Dec 2011 14:05:10 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Glauber Costa <glommer@...allels.com>
Cc:	"David S. Miller" <davem@...emloft.net>,
	Alexey Kuznetsov <kuznet@....inr.ac.ru>,
	James Morris <jmorris@...ei.org>,
	Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
	Patrick McHardy <kaber@...sh.net>, netdev@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: [patch -next] tcp_memcontrol: fix reversed if condition

We should only dereference the pointer if it's valid, not the other way
round.

Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>

diff --git a/net/ipv4/tcp_memcontrol.c b/net/ipv4/tcp_memcontrol.c
index 171d7b6..7fed04f 100644
--- a/net/ipv4/tcp_memcontrol.c
+++ b/net/ipv4/tcp_memcontrol.c
@@ -44,7 +44,7 @@ static inline struct tcp_memcontrol *tcp_from_cgproto(struct cg_proto *cg_proto)
 
 static void memcg_tcp_enter_memory_pressure(struct sock *sk)
 {
-	if (!sk->sk_cgrp->memory_pressure)
+	if (sk->sk_cgrp->memory_pressure)
 		*sk->sk_cgrp->memory_pressure = 1;
 }
 EXPORT_SYMBOL(memcg_tcp_enter_memory_pressure);
--
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