nfsd: rename nfsd_last_thread() to nfsd_destroy_serv()

As this function now destroys the svc_serv, this is a better name.
Signed-off-by: NeilBrown <neilb@suse.de>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>

fs/nfsd/nfsctl.c

@@ -712,7 +712,8 @@ static ssize_t __write_ports_addfd(char *buf, struct net *net, const struct cred
 	err = svc_addsock(serv, net, fd, buf, SIMPLE_TRANSACTION_LIMIT, cred);
 
 	if (!serv->sv_nrthreads && list_empty(&nn->nfsd_serv->sv_permsocks))
-		nfsd_last_thread(net);
+		nfsd_destroy_serv(net);
+
 	return err;
 }
 
@@ -759,7 +760,7 @@ static ssize_t __write_ports_addxprt(char *buf, struct net *net, const struct cr
 	}
 out_err:
 	if (!serv->sv_nrthreads && list_empty(&nn->nfsd_serv->sv_permsocks))
-		nfsd_last_thread(net);
+		nfsd_destroy_serv(net);
 
 	return err;
 }

fs/nfsd/nfsd.h

@@ -148,7 +148,7 @@ int nfsd_vers(struct nfsd_net *nn, int vers, enum vers_op change);
 int nfsd_minorversion(struct nfsd_net *nn, u32 minorversion, enum vers_op change);
 void nfsd_reset_versions(struct nfsd_net *nn);
 int nfsd_create_serv(struct net *net);
-void nfsd_last_thread(struct net *net);
+void nfsd_destroy_serv(struct net *net);
 
 extern int nfsd_max_blksize;
 

fs/nfsd/nfssvc.c

@@ -532,7 +532,11 @@ static struct notifier_block nfsd_inet6addr_notifier = {
 /* Only used under nfsd_mutex, so this atomic may be overkill: */
 static atomic_t nfsd_notifier_refcount = ATOMIC_INIT(0);
 
-void nfsd_last_thread(struct net *net)
+/**
+ * nfsd_destroy_serv - tear down NFSD's svc_serv for a namespace
+ * @net: network namespace the NFS service is associated with
+ */
+void nfsd_destroy_serv(struct net *net)
 {
 	struct nfsd_net *nn = net_generic(net, nfsd_net_id);
 	struct svc_serv *serv = nn->nfsd_serv;
@@ -554,7 +558,7 @@ void nfsd_last_thread(struct net *net)
 	/*
 	 * write_ports can create the server without actually starting
 	 * any threads--if we get shut down before any threads are
-	 * started, then nfsd_last_thread will be run before any of this
+	 * started, then nfsd_destroy_serv will be run before any of this
 	 * other initialization has been done except the rpcb information.
 	 */
 	svc_rpcb_cleanup(serv, net);
@@ -640,7 +644,7 @@ void nfsd_shutdown_threads(struct net *net)
 
 	/* Kill outstanding nfsd threads */
 	svc_set_num_threads(serv, NULL, 0);
-	nfsd_last_thread(net);
+	nfsd_destroy_serv(net);
 	mutex_unlock(&nfsd_mutex);
 }
 
@@ -802,7 +806,7 @@ nfsd_svc(int nrservs, struct net *net, const struct cred *cred)
 	error = serv->sv_nrthreads;
 out_put:
 	if (serv->sv_nrthreads == 0)
-		nfsd_last_thread(net);
+		nfsd_destroy_serv(net);
 out:
 	mutex_unlock(&nfsd_mutex);
 	return error;