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,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License version 2 for more details. A copy is
14 * included in the COPYING file that accompanied this code.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 * Copyright (c) 2012, 2014, Intel Corporation.
26 * lustre/obdclass/local_storage.c
28 * Local storage for file/objects with fid generation. Works on top of OSD.
30 * Author: Mikhail Pershin <mike.pershin@intel.com>
32 #ifndef __LOCAL_STORAGE_H
33 #define __LOCAL_STORAGE_H
35 #include <dt_object.h>
37 #include <lustre_fid.h>
38 #include <lustre_disk.h>
41 struct dt_device ls_top_dev;
42 /* all initialized ls_devices on this node linked by this */
43 struct list_head ls_linkage;
44 /* how many handle's reference this local storage */
46 /* underlaying OSD device */
47 struct dt_device *ls_osd;
48 /* list of all local OID storages */
49 struct list_head ls_los_list;
50 struct mutex ls_los_mutex;
53 static inline struct ls_device *dt2ls_dev(struct dt_device *d)
55 return container_of0(d, struct ls_device, ls_top_dev);
59 struct lu_object_header ls_header;
60 struct dt_object ls_obj;
63 static inline struct ls_object *lu2ls_obj(struct lu_object *o)
65 return container_of0(o, struct ls_object, ls_obj.do_lu);
68 static inline struct dt_object *ls_locate(const struct lu_env *env,
70 const struct lu_fid *fid,
71 const struct lu_object_conf *conf)
73 return dt_locate_at(env, ls->ls_osd, fid,
74 &ls->ls_top_dev.dd_lu_dev, conf);
77 struct ls_device *ls_device_get(struct dt_device *dev);
78 void ls_device_put(const struct lu_env *env, struct ls_device *ls);
79 struct local_oid_storage *dt_los_find(struct ls_device *ls, __u64 seq);
80 void dt_los_put(struct local_oid_storage *los);
82 /* Lustre 2.3 on-disk structure describing local object OIDs storage
83 * the structure to be used with any sequence managed by
84 * local object library.
85 * Obsoleted since 2.4 but is kept for compatibility reasons,
86 * see lastid_compat_check() in obdclass/local_storage.c */
92 #define LOS_MAGIC 0xdecafbee
95 * Used in __local_file_create() for object lock role
97 enum los_object_role {