[PATCH net-next-2.6] net sched: make pedit check for clones instead

[jamal <hadi@cyberus.ca>]

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And here's the second one. I noticed Changli's changes are not yet in
net-next. I will wait for that change to propagate and then send the
fix to pedit that i discussed with Herbert.

cheers,
jamal

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commit 0697bf778d48d155ef48f652cee8f103db3dcedb
Author: Jamal Hadi Salim <hadi@cyberus.ca>
Date:   Fri Jun 4 08:39:47 2010 -0400

    net sched: make pedit check for clones instead
    
    Now that the core path doesnt set OK to munge we detect
    writable skbs by looking to see if they are cloned.
    
    Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>

diff --git a/net/sched/act_pedit.c b/net/sched/act_pedit.c
index fdbd0b7..8d15caf 100644
--- a/net/sched/act_pedit.c
+++ b/net/sched/act_pedit.c
@@ -127,8 +127,7 @@ static int tcf_pedit(struct sk_buff *skb, struct tc_action *a,
 	int i, munged = 0;
 	u8 *pptr;
 
-	if (!(skb->tc_verd & TC_OK2MUNGE)) {
-		/* should we set skb->cloned? */
+	if (skb_cloned(skb)) {
 		if (pskb_expand_head(skb, 0, 0, GFP_ATOMIC)) {
 			return p->tcf_action;
 		}