From: WANG Cong <xiyou.wangcong@gmail.com>
Date: Thu, 5 Mar 2015 04:11:43 +0000 (-0800)
Subject: net_sched: move tp->root allocation into route4_init()
X-Git-Tag: v4.1-rc1~128^2~337
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a05c2d112c0c4a768bfad47c33f28a15f8cf1193;p=platform%2Fkernel%2Flinux-exynos.git

net_sched: move tp->root allocation into route4_init()

Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/sched/cls_route.c b/net/sched/cls_route.c
index 2ecd246..bb8a602 100644
--- a/net/sched/cls_route.c
+++ b/net/sched/cls_route.c
@@ -258,6 +258,13 @@ static unsigned long route4_get(struct tcf_proto *tp, u32 handle)
 
 static int route4_init(struct tcf_proto *tp)
 {
+	struct route4_head *head;
+
+	head = kzalloc(sizeof(struct route4_head), GFP_KERNEL);
+	if (head == NULL)
+		return -ENOBUFS;
+
+	rcu_assign_pointer(tp->root, head);
 	return 0;
 }
 
@@ -484,13 +491,6 @@ static int route4_change(struct net *net, struct sk_buff *in_skb,
 			return -EINVAL;
 
 	err = -ENOBUFS;
-	if (head == NULL) {
-		head = kzalloc(sizeof(struct route4_head), GFP_KERNEL);
-		if (head == NULL)
-			goto errout;
-		rcu_assign_pointer(tp->root, head);
-	}
-
 	f = kzalloc(sizeof(struct route4_filter), GFP_KERNEL);
 	if (!f)
 		goto errout;