[PATCH v2] net: eliminate meaningless memcpy to data in pskb_carve_inside_nonlinear()

[Miaohe Lin]

The frags of skb_shared_info of the data is assigned in following loop. It
is meaningless to do a memcpy of frags here.

Signed-off-by: Miaohe Lin <linmia...@huawei.com>
---
 net/core/skbuff.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index afbc1a79dc8a..44b7010e4813 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -5953,8 +5953,7 @@ static int pskb_carve_inside_nonlinear(struct sk_buff 
*skb, const u32 off,
        size = SKB_WITH_OVERHEAD(ksize(data));
 
        memcpy((struct skb_shared_info *)(data + size),
-              skb_shinfo(skb), offsetof(struct skb_shared_info,
-                                        frags[skb_shinfo(skb)->nr_frags]));
+              skb_shinfo(skb), offsetof(struct skb_shared_info, frags[0]));
        if (skb_orphan_frags(skb, gfp_mask)) {
                kfree(data);
                return -ENOMEM;
-- 
2.19.1