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 Whamcloud, Inc.
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>
33 #include <dt_object.h>
35 #include <lustre_fid.h>
36 #include <lustre_disk.h>
39 struct dt_device ls_top_dev;
40 /* all initialized ls_devices on this node linked by this */
41 cfs_list_t ls_linkage;
42 /* how many handle's reference this local storage */
43 cfs_atomic_t ls_refcount;
44 /* underlaying OSD device */
45 struct dt_device *ls_osd;
46 /* list of all local OID storages */
47 cfs_list_t ls_los_list;
48 struct mutex ls_los_mutex;
51 static inline struct ls_device *dt2ls_dev(struct dt_device *d)
53 return container_of0(d, struct ls_device, ls_top_dev);
57 struct lu_object_header ls_header;
58 struct dt_object ls_obj;
61 static inline struct ls_object *lu2ls_obj(struct lu_object *o)
63 return container_of0(o, struct ls_object, ls_obj.do_lu);
66 static inline struct dt_object *ls_locate(const struct lu_env *env,
68 const struct lu_fid *fid)
70 return dt_locate_at(env, ls->ls_osd, fid, &ls->ls_top_dev.dd_lu_dev);
73 struct ls_device *ls_device_get(struct dt_device *dev);
74 void ls_device_put(const struct lu_env *env, struct ls_device *ls);
75 struct local_oid_storage *dt_los_find(struct ls_device *ls, __u64 seq);
76 void dt_los_put(struct local_oid_storage *los);