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authorEric Dumazet <edumazet@google.com>2017-09-01 02:48:21 +0300
committerDavid S. Miller <davem@davemloft.net>2017-09-02 06:22:03 +0300
commitdb5bce32fbe19f0c7482fb5a40a33178bbe7b11b (patch)
treeda0171aec6a48e32f1c9c140cf04e984cd979f5c /net/ipv4/tcp.c
parent487234cc1954a1c09115a82b45ebcc2086657572 (diff)
downloadlinux-db5bce32fbe19f0c7482fb5a40a33178bbe7b11b.tar.xz
net: prepare (struct ubuf_info)->refcnt conversion
In order to convert this atomic_t refcnt to refcount_t, we need to init the refcount to one to not trigger a 0 -> 1 transition. This also removes one atomic operation in fast path. v2: removed dead code in sock_zerocopy_put_abort() as suggested by Willem. Signed-off-by: Eric Dumazet <edumazet@google.com> Acked-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp.c')
-rw-r--r--net/ipv4/tcp.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 7a3d84375836..5091402720ab 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -1190,8 +1190,6 @@ int tcp_sendmsg_locked(struct sock *sk, struct msghdr *msg, size_t size)
goto out_err;
}
- /* skb may be freed in main loop, keep extra ref on uarg */
- sock_zerocopy_get(uarg);
if (!(sk_check_csum_caps(sk) && sk->sk_route_caps & NETIF_F_SG))
uarg->zerocopy = 0;
}