Commit 4e33e346 authored Feb 17, 2017 by Eric Dumazet Committed by David S. Miller Feb 17, 2017

tcp: use page_ref_inc() in tcp_sendmsg()



sk_page_frag_refill() allocates either a compound page or an order-0
page. We can use page_ref_inc() which is slightly faster than get_page()

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent a4ecb15a

net/ipv4/tcp.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1288,7 +1288,7 @@ int tcp_sendmsg(struct sock sk, struct msghdr msg, size_t size)
		} else {
		skb_fill_page_desc(skb, i, pfrag->page,
		pfrag->offset, copy);
		get_page(pfrag->page);
		page_ref_inc(pfrag->page);
		}
		pfrag->offset += copy;
		}