net: __alloc_skb() speedup

[safe/jmp/linux-2.6] / include / linux / skbuff.h

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 746a652..88d5539 100644 (file)
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -187,7 +187,6 @@ union skb_shared_tx {
  * the end of the header data, ie. at skb->end.
  */
 struct skb_shared_info {
-       atomic_t        dataref;
        unsigned short  nr_frags;
        unsigned short  gso_size;
        /* Warning: this field is not always filled in (UFO)! */
@@ -197,6 +196,12 @@ struct skb_shared_info {
        union skb_shared_tx tx_flags;
        struct sk_buff  *frag_list;
        struct skb_shared_hwtstamps hwtstamps;
+
+       /*
+        * Warning : all fields before dataref are cleared in __alloc_skb()
+        */
+       atomic_t        dataref;
+
        skb_frag_t      frags[MAX_SKB_FRAGS];
        /* Intermediate layers must ensure that destructor_arg
         * remains valid until skb destructor */