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tcp: add tcp_sock_set_nodelay

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Add a helper to directly set the TCP_NODELAY sockopt from kernel space
without going through a fake uaccess.  Cleanup the callers to avoid
pointless wrappers now that this is a simple function call.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Sagi Grimberg <sagi@grimberg.me>
Acked-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Christoph Hellwig
2020-05-28 07:12:19 +02:00
committed by David S. Miller
parent db10538a4b
commit 12abc5ee78
16 changed files with 49 additions and 127 deletions
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11
net/ceph/messenger.c
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@@ -490,15 +490,8 @@ static int ceph_tcp_connect(struct ceph_connection *con)
return ret;
}
if (ceph_test_opt(from_msgr(con->msgr), TCP_NODELAY)) {
int optval = 1;
ret = kernel_setsockopt(sock, SOL_TCP, TCP_NODELAY,
(char *)&optval, sizeof(optval));
if (ret)
pr_err("kernel_setsockopt(TCP_NODELAY) failed: %d",
ret);
}
if (ceph_test_opt(from_msgr(con->msgr), TCP_NODELAY))
tcp_sock_set_nodelay(sock->sk);
con->sock = sock;
return 0;