[DLM] fix iovec length in recvmsg

I didn't spot that the msg_iovlen was set to 2 if there
were two elements in the iovec but left at zero if not :(

I think this might be why bob was still seeing trouble.

Signed-Off-By: Patrick Caulfield <pcaulfie@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c
index 867f93d0417e3fa1ca11e0e7e4b0363aa02d4a48..6da6b14d5a61b40a83e904e6f56cc19d12865ad2 100644 (file)
--- a/fs/dlm/lowcomms.c
+++ b/fs/dlm/lowcomms.c
@@ -519,6 +519,7 @@ static int receive_from_sock(void)
        msg.msg_flags = 0;
        msg.msg_control = incmsg;
        msg.msg_controllen = sizeof(incmsg);
+       msg.msg_iovlen = 1;
 
        /* I don't see why this circular buffer stuff is necessary for SCTP
         * which is a packet-based protocol, but the whole thing breaks under