4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2012, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/mdd/mdd_lock.c
38 * Lustre Metadata Server (mdd) routines
40 * Author: Mike Pershin <tappro@clusterfs.com>
43 #define DEBUG_SUBSYSTEM S_MDS
45 #include <linux/module.h>
46 #include <lustre_ver.h>
47 #include "mdd_internal.h"
49 void mdd_write_lock(const struct lu_env *env, struct mdd_object *obj,
50 enum mdd_object_role role)
52 struct dt_object *next = mdd_object_child(obj);
54 next->do_ops->do_write_lock(env, next, role);
57 void mdd_read_lock(const struct lu_env *env, struct mdd_object *obj,
58 enum mdd_object_role role)
60 struct dt_object *next = mdd_object_child(obj);
62 next->do_ops->do_read_lock(env, next, role);
65 void mdd_write_unlock(const struct lu_env *env, struct mdd_object *obj)
67 struct dt_object *next = mdd_object_child(obj);
69 next->do_ops->do_write_unlock(env, next);
72 void mdd_read_unlock(const struct lu_env *env, struct mdd_object *obj)
74 struct dt_object *next = mdd_object_child(obj);
76 next->do_ops->do_read_unlock(env, next);
79 int mdd_write_locked(const struct lu_env *env, struct mdd_object *obj)
81 struct dt_object *next = mdd_object_child(obj);
83 return next->do_ops->do_write_locked(env, next);