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net: add sock_no_linger

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Add a helper to directly set the SO_LINGER sockopt from kernel space
with onoff set to true and a linger time of 0 without going through a
fake uaccess.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Christoph Hellwig
2020-05-28 07:12:10 +02:00
committed by David S. Miller
parent b58f0e8f38
commit c433594c07
8 changed files with 16 additions and 37 deletions
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12
net/sunrpc/svcsock.c
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@@ -323,17 +323,9 @@ static int svc_tcp_has_wspace(struct svc_xprt *xprt)
static void svc_tcp_kill_temp_xprt(struct svc_xprt *xprt)
{
struct svc_sock *svsk;
struct socket *sock;
struct linger no_linger = {
.l_onoff = 1,
.l_linger = 0,
};
struct svc_sock *svsk = container_of(xprt, struct svc_sock, sk_xprt);
svsk = container_of(xprt, struct svc_sock, sk_xprt);
sock = svsk->sk_sock;
kernel_setsockopt(sock, SOL_SOCKET, SO_LINGER,
(char *)&no_linger, sizeof(no_linger));
sock_no_linger(svsk->sk_sock->sk);
}
/*