1 files changed, 3 insertions, 15 deletions

diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h
index d36515dae62f..93f5d9b0e9f9 100644
--- a/include/linux/if_vlan.h
+++ b/include/linux/if_vlan.h
@@ -185,22 +185,10 @@ static inline struct sk_buff *__vlan_put_tag(struct sk_buff *skb, u16 vlan_tci)
 {
         struct vlan_ethhdr *veth;
 
-        if (skb_headroom(skb) < VLAN_HLEN) {
-                struct sk_buff *sk_tmp = skb;
-                skb = skb_realloc_headroom(sk_tmp, VLAN_HLEN);
-                kfree_skb(sk_tmp);
-                if (!skb) {
-                        printk(KERN_ERR "vlan: failed to realloc headroom\n");
-                        return NULL;
-                }
-        } else {
-                skb = skb_unshare(skb, GFP_ATOMIC);
-                if (!skb) {
-                        printk(KERN_ERR "vlan: failed to unshare skbuff\n");
-                        return NULL;
-                }
+        if (skb_cow_head(skb, VLAN_HLEN) < 0) {
+                kfree_skb(skb);
+                return NULL;
         }
-
         veth = (struct vlan_ethhdr *)skb_push(skb, VLAN_HLEN);
 
         /* Move the mac addresses to the beginning of the new header. */