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diff --git a/src/mds/LocalLock.h b/src/mds/LocalLock.h
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+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation. See file COPYING.
+ *
+ */
+
+
+#ifndef CEPH_LOCALLOCK_H
+#define CEPH_LOCALLOCK_H
+
+#include "SimpleLock.h"
+
+class LocalLock : public SimpleLock {
+public:
+ client_t last_wrlock_client;
+
+ LocalLock(MDSCacheObject *o, LockType *t) :
+ SimpleLock(o, t) {
+ set_state(LOCK_LOCK); // always.
+ }
+
+ bool is_locallock() const override {
+ return true;
+ }
+
+ bool can_xlock_local() const {
+ return !is_wrlocked() && (get_xlock_by() == MutationRef());
+ }
+
+ bool can_wrlock() const {
+ return !is_xlocked();
+ }
+ void get_wrlock(client_t client) {
+ ceph_assert(can_wrlock());
+ SimpleLock::get_wrlock();
+ last_wrlock_client = client;
+ }
+ void put_wrlock() {
+ SimpleLock::put_wrlock();
+ if (get_num_wrlocks() == 0)
+ last_wrlock_client = client_t();
+ }
+ client_t get_last_wrlock_client() const {
+ return last_wrlock_client;
+ }
+
+ void print(ostream& out) const override {
+ out << "(";
+ _print(out);
+ if (last_wrlock_client >= 0)
+ out << " last_client=" << last_wrlock_client;
+ out << ")";
+ }
+};
+
+
+#endif