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net: add sock_set_keepalive

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Add a helper to directly set the SO_KEEPALIVE sockopt from kernel space
without going through a fake uaccess.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Christoph Hellwig
2020-05-28 07:12:15 +02:00
committed by David S. Miller
parent 783da70e83
commit ce3d9544ce
5 changed files with 14 additions and 13 deletions
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6
fs/dlm/lowcomms.c
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@@ -1142,11 +1142,7 @@ static struct socket *tcp_create_listen_sock(struct connection *con,
con->sock = NULL;
goto create_out;
}
result = kernel_setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE,
(char *)&one, sizeof(one));
if (result < 0) {
log_print("Set keepalive failed: %d", result);
}
sock_set_keepalive(sock->sk);
result = sock->ops->listen(sock, 5);
if (result < 0) {