===== include/linux/skbuff.h 1.59 vs edited =====
--- 1.59/include/linux/skbuff.h	2005-01-11 07:23:55 +11:00
+++ edited/include/linux/skbuff.h	2005-02-03 21:57:26 +11:00
@@ -353,15 +353,21 @@
  */
 static inline void kfree_skb(struct sk_buff *skb)
 {
-	if (atomic_read(&skb->users) == 1 || atomic_dec_and_test(&skb->users))
-		__kfree_skb(skb);
+	smp_mb__before_atomic_dec();
+	if (!atomic_dec_and_test(&skb->users))
+		return;
+	smp_mb__after_atomic_dec();
+	__kfree_skb(skb);
 }
 
 /* Use this if you didn't touch the skb state [for fast switching] */
 static inline void kfree_skb_fast(struct sk_buff *skb)
 {
-	if (atomic_read(&skb->users) == 1 || atomic_dec_and_test(&skb->users))
-		kfree_skbmem(skb);
+	smp_mb__before_atomic_dec();
+	if (!atomic_dec_and_test(&skb->users))
+		return;
+	smp_mb__after_atomic_dec();
+	kfree_skbmem(skb);
 }
 
 /**