+ return 0;
+}
+
+static int create_lockd_listener(struct svc_serv *serv, char *name,
+ unsigned short port)
+{
+ struct svc_xprt *xprt;
+
+ xprt = svc_find_xprt(serv, name, 0, 0);
+ if (xprt == NULL)
+ return svc_create_xprt(serv, name, port, SVC_SOCK_DEFAULTS);
+
+ svc_xprt_put(xprt);
+ return 0;
+}
+
+/*
+ * Ensure there are active UDP and TCP listeners for lockd.
+ *
+ * Even if we have only TCP NFS mounts and/or TCP NFSDs, some
+ * local services (such as rpc.statd) still require UDP, and
+ * some NFS servers do not yet support NLM over TCP.
+ *
+ * Returns zero if all listeners are available; otherwise a
+ * negative errno value is returned.
+ */
+static int make_socks(struct svc_serv *serv)
+{
+ static int warned;
+ int err;
+
+ err = create_lockd_listener(serv, "udp", nlm_udpport);
+ if (err < 0)
+ goto out_err;
+
+ err = create_lockd_listener(serv, "tcp", nlm_tcpport);
+ if (err < 0)
+ goto out_err;
+
+ warned = 0;
+ return 0;
+
+out_err:
+ if (warned++ == 0)
+ printk(KERN_WARNING
+ "lockd_up: makesock failed, error=%d\n", err);
+ return err;