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| author | David Teigland <teigland@redhat.com> | 2010-11-12 18:12:55 +0100 |
|---|---|---|
| committer | David Teigland <teigland@redhat.com> | 2010-11-12 18:12:55 +0100 |
| commit | cb2d45da81c86d5191b19d0f67732a854bc0253c (patch) | |
| tree | 6220ce5780e13684024f2693f66f5749c2cb472c | |
| parent | dlm: Use cmwq for send and receive workqueues (diff) | |
| download | linux-cb2d45da81c86d5191b19d0f67732a854bc0253c.tar.xz linux-cb2d45da81c86d5191b19d0f67732a854bc0253c.zip | |
dlm: use TCP_NODELAY
Nagling doesn't help and can sometimes hurt dlm comms.
Signed-off-by: David Teigland <teigland@redhat.com>
| -rw-r--r-- | fs/dlm/lowcomms.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c index 1d4e644c6589..2bedb0ac5f92 100644 --- a/fs/dlm/lowcomms.c +++ b/fs/dlm/lowcomms.c @@ -926,6 +926,7 @@ static void tcp_connect_to_sock(struct connection *con) struct sockaddr_storage saddr, src_addr; int addr_len; struct socket *sock = NULL; + int one = 1; if (con->nodeid == 0) { log_print("attempt to connect sock 0 foiled"); @@ -971,6 +972,11 @@ static void tcp_connect_to_sock(struct connection *con) make_sockaddr(&saddr, dlm_config.ci_tcp_port, &addr_len); log_print("connecting to %d", con->nodeid); + + /* Turn off Nagle's algorithm */ + kernel_setsockopt(sock, SOL_TCP, TCP_NODELAY, (char *)&one, + sizeof(one)); + result = sock->ops->connect(sock, (struct sockaddr *)&saddr, addr_len, O_NONBLOCK); @@ -1022,6 +1028,10 @@ static struct socket *tcp_create_listen_sock(struct connection *con, goto create_out; } + /* Turn off Nagle's algorithm */ + kernel_setsockopt(sock, SOL_TCP, TCP_NODELAY, (char *)&one, + sizeof(one)); + result = kernel_setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char *)&one, sizeof(one)); |