NFS associate sessionid with callback connection

The sessions based callback service is started prior to the CREATE_SESSION call
so that it can handle CB_NULL requests which can be sent before the
CREATE_SESSION call returns and the session ID is known.

Set the callback sessionid after a sucessful CREATE_SESSION.

Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index f575a31..485e95e 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -192,6 +192,12 @@
 	status = nfs4_proc_create_session(clp);
 	if (status != 0)
 		goto out;
+	status = nfs4_set_callback_sessionid(clp);
+	if (status != 0) {
+		printk(KERN_WARNING "Sessionid not set. No callback service\n");
+		nfs_callback_down(1);
+		status = 0;
+	}
 	nfs41_setup_state_renewal(clp);
 	nfs_mark_client_ready(clp, NFS_CS_READY);
 out: