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tcp: use page_ref_inc() in tcp_sendmsg()
author
Eric Dumazet
<edumazet@google.com>
Fri, 17 Feb 2017 17:11:42 +0000
(09:11 -0800)
committer
David S. Miller
<davem@davemloft.net>
Fri, 17 Feb 2017 20:31:06 +0000
(15:31 -0500)
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>
net/ipv4/tcp.c
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diff --git
a/net/ipv4/tcp.c
b/net/ipv4/tcp.c
index d44a6989e76d69aa44e2a26d37b4204376c94966..da385ae997a3d61f0217a2e585088a82e6d50cd3 100644
(file)
--- a/
net/ipv4/tcp.c
+++ b/
net/ipv4/tcp.c
@@
-1288,7
+1288,7
@@
new_segment:
} else {
skb_fill_page_desc(skb, i, pfrag->page,
pfrag->offset, copy);
-
get_page
(pfrag->page);
+
page_ref_inc
(pfrag->page);
}
pfrag->offset += copy;
}