dlm: disable nagle for SCTP

For TCP we disable Nagle and I cannot think of why it would be needed
for SCTP. When disabled it seems to improve dlm_lock operations like it
does for TCP.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: David Teigland <teigland@redhat.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c
index a4fad32bb788..4f539dd9b1e9 100644
--- a/fs/dlm/lowcomms.c
+++ b/fs/dlm/lowcomms.c
@@ -1346,6 +1346,7 @@ static int sctp_listen_for_all(void)
         int result = -EINVAL, num = 1, i, addr_len;
         struct connection *con = nodeid2con(0, GFP_NOFS);
         int bufsize = NEEDED_RMEM;
+        int one = 1;
 
         if (!con)
                 return -ENOMEM;
@@ -1380,6 +1381,11 @@ static int sctp_listen_for_all(void)
                 goto create_delsock;
         }
 
+        result = kernel_setsockopt(sock, SOL_SCTP, SCTP_NODELAY, (char *)&one,
+                                   sizeof(one));
+        if (result < 0)
+                log_print("Could not set SCTP NODELAY error %d\n", result);
+
         /* Init con struct */
         sock->sk->sk_user_data = con;
         con->sock = sock;