samba - Sep 2008 - samba server peer disconnect

I have mounted a samba share using cifs client.
cifs client returns with 0 from kernel_recvmsg meaning peer has
orderly disconnected/shutdown the socket!

What should I be looking for in the messages logged by samba server
when it disconnected/shutdown that socket?  I am logging at level 10
on the samba server.

I looked for keywords like disconnect, shutdown, reset but can't find any.

Regards,

Shirish