skbuff: convert to skb_orphan_frags

Reduce code duplication a bit using the new helper.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/core/skbuff.c

@@ -804,10 +804,8 @@ struct sk_buff *skb_clone(struct sk_buff *skb, gfp_t gfp_mask)
 {
 	struct sk_buff *n;
 
-	if (skb_shinfo(skb)->tx_flags & SKBTX_DEV_ZEROCOPY) {
-		if (skb_copy_ubufs(skb, gfp_mask))
+	if (skb_orphan_frags(skb, gfp_mask))
 		return NULL;
-	}
 
 	n = skb + 1;
 	if (skb->fclone == SKB_FCLONE_ORIG &&
@@ -927,13 +925,11 @@ struct sk_buff *__pskb_copy(struct sk_buff *skb, int headroom, gfp_t gfp_mask)
 	if (skb_shinfo(skb)->nr_frags) {
 		int i;
 
-		if (skb_shinfo(skb)->tx_flags & SKBTX_DEV_ZEROCOPY) {
-			if (skb_copy_ubufs(skb, gfp_mask)) {
+		if (skb_orphan_frags(skb, gfp_mask)) {
 			kfree_skb(n);
 			n = NULL;
 			goto out;
 		}
-		}
 		for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
 			skb_shinfo(n)->frags[i] = skb_shinfo(skb)->frags[i];
 			skb_frag_ref(skb, i);
@@ -1005,10 +1001,8 @@ int pskb_expand_head(struct sk_buff *skb, int nhead, int ntail,
 	 */
 	if (skb_cloned(skb)) {
 		/* copy this zero copy skb frags */
-		if (skb_shinfo(skb)->tx_flags & SKBTX_DEV_ZEROCOPY) {
-			if (skb_copy_ubufs(skb, gfp_mask))
+		if (skb_orphan_frags(skb, gfp_mask))
 			goto nofrags;
-		}
 		for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
 			skb_frag_ref(skb, i);