1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/include/md_object.h
38 * Extention of lu_object.h for metadata objects
41 #ifndef _LUSTRE_MD_OBJECT_H
42 #define _LUSTRE_MD_OBJECT_H
45 * Sub-class of lu_object with methods common for "meta-data" objects in MDT
48 * Meta-data objects implement namespace operations: you can link, unlink
49 * them, and treat them as directories.
51 * Examples: mdt, cmm, and mdt are implementations of md interface.
57 * super-class definitions.
59 #include <dt_object.h>
63 struct md_device_operations;
87 cfs_group_info_t *mu_ginfo;
88 struct md_identity *mu_identity;
95 /** there are at most 5 fids in one operation, see rename, NOTE the last one
96 * is a temporary one used for is_subdir() */
100 const struct lu_fid *mc_fid[MD_CAPAINFO_MAX];
101 struct lustre_capa *mc_capa[MD_CAPAINFO_MAX];
105 struct obd_export *mq_exp;
109 * Implemented in mdd/mdd_handler.c.
111 * XXX should be moved into separate .h/.c together with all md security
112 * related definitions.
114 struct md_ucred *md_ucred(const struct lu_env *env);
115 struct md_capainfo *md_capainfo(const struct lu_env *env);
116 struct md_quota *md_quota(const struct lu_env *env);
118 /** metadata attributes */
122 MA_COOKIE = (1 << 2),
125 MA_ACL_DEF = (1 << 5),
126 MA_LOV_DEF = (1 << 6),
127 /* (Layout lock will used #7 here) */
146 MDT_REG_LOCK = (1 << 0),
147 MDT_PDO_LOCK = (1 << 1)
152 __u32 mh_archive_number;
155 #define IOEPOCH_INVAL 0
168 struct lu_attr ma_attr;
169 struct lov_mds_md *ma_lmm;
171 struct lmv_stripe_md *ma_lmv;
175 struct llog_cookie *ma_cookie;
177 struct lustre_capa *ma_capa;
178 struct md_hsm ma_hsm;
179 struct md_som_data *ma_som;
182 /** Additional parameters for create */
185 /** symlink target */
186 const char *sp_symname;
187 /** parent FID for cross-ref mkdir */
188 const struct lu_fid *sp_pfid;
189 /** eadata for regular files */
191 /** lov objs exist already */
192 const struct lu_fid *fid;
197 /** don't create lov objects or llog cookie - this replay */
200 /** Create flag from client: such as MDS_OPEN_CREAT, and others. */
203 /** Should mdd do lookup sanity check or not. */
206 /** Current lock mode for parent dir where create is performing. */
207 mdl_mode_t sp_cr_mode;
209 /** Check for split */
212 /** to create directory */
213 const struct dt_index_features *sp_feat;
217 * Operations implemented for each md object (both directory and leaf).
219 struct md_object_operations {
220 int (*moo_permission)(const struct lu_env *env,
221 struct md_object *pobj, struct md_object *cobj,
222 struct md_attr *attr, int mask);
224 int (*moo_attr_get)(const struct lu_env *env, struct md_object *obj,
225 struct md_attr *attr);
227 int (*moo_attr_set)(const struct lu_env *env, struct md_object *obj,
228 const struct md_attr *attr);
230 int (*moo_xattr_get)(const struct lu_env *env, struct md_object *obj,
231 struct lu_buf *buf, const char *name);
233 int (*moo_xattr_list)(const struct lu_env *env, struct md_object *obj,
236 int (*moo_xattr_set)(const struct lu_env *env, struct md_object *obj,
237 const struct lu_buf *buf, const char *name,
240 int (*moo_xattr_del)(const struct lu_env *env, struct md_object *obj,
243 int (*moo_readpage)(const struct lu_env *env, struct md_object *obj,
244 const struct lu_rdpg *rdpg);
246 int (*moo_readlink)(const struct lu_env *env, struct md_object *obj,
248 int (*moo_changelog)(const struct lu_env *env,
249 enum changelog_rec_type type, int flags,
250 struct md_object *obj);
251 /** part of cross-ref operation */
252 int (*moo_object_create)(const struct lu_env *env,
253 struct md_object *obj,
254 const struct md_op_spec *spec,
257 int (*moo_ref_add)(const struct lu_env *env,
258 struct md_object *obj,
259 const struct md_attr *ma);
261 int (*moo_ref_del)(const struct lu_env *env,
262 struct md_object *obj,
265 int (*moo_open)(const struct lu_env *env,
266 struct md_object *obj, int flag);
268 int (*moo_close)(const struct lu_env *env, struct md_object *obj,
271 int (*moo_capa_get)(const struct lu_env *, struct md_object *,
272 struct lustre_capa *, int renewal);
274 int (*moo_object_sync)(const struct lu_env *, struct md_object *);
275 dt_obj_version_t (*moo_version_get)(const struct lu_env *,
277 void (*moo_version_set)(const struct lu_env *, struct md_object *,
279 int (*moo_path)(const struct lu_env *env, struct md_object *obj,
280 char *path, int pathlen, __u64 *recno, int *linkno);
281 int (*moo_file_lock)(const struct lu_env *env, struct md_object *obj,
282 struct lov_mds_md *lmm, struct ldlm_extent *extent,
283 struct lustre_handle *lockh);
284 int (*moo_file_unlock)(const struct lu_env *env, struct md_object *obj,
285 struct lov_mds_md *lmm,
286 struct lustre_handle *lockh);
290 * Operations implemented for each directory object.
292 struct md_dir_operations {
293 int (*mdo_is_subdir) (const struct lu_env *env, struct md_object *obj,
294 const struct lu_fid *fid, struct lu_fid *sfid);
296 int (*mdo_lookup)(const struct lu_env *env, struct md_object *obj,
297 const struct lu_name *lname, struct lu_fid *fid,
298 struct md_op_spec *spec);
300 mdl_mode_t (*mdo_lock_mode)(const struct lu_env *env,
301 struct md_object *obj,
304 int (*mdo_create)(const struct lu_env *env, struct md_object *pobj,
305 const struct lu_name *lname, struct md_object *child,
306 struct md_op_spec *spec,
309 /** This method is used for creating data object for this meta object*/
310 int (*mdo_create_data)(const struct lu_env *env, struct md_object *p,
312 const struct md_op_spec *spec,
315 int (*mdo_rename)(const struct lu_env *env, struct md_object *spobj,
316 struct md_object *tpobj, const struct lu_fid *lf,
317 const struct lu_name *lsname, struct md_object *tobj,
318 const struct lu_name *ltname, struct md_attr *ma);
320 int (*mdo_link)(const struct lu_env *env, struct md_object *tgt_obj,
321 struct md_object *src_obj, const struct lu_name *lname,
324 int (*mdo_unlink)(const struct lu_env *env, struct md_object *pobj,
325 struct md_object *cobj, const struct lu_name *lname,
328 /** partial ops for cross-ref case */
329 int (*mdo_name_insert)(const struct lu_env *env,
330 struct md_object *obj,
331 const struct lu_name *lname,
332 const struct lu_fid *fid,
333 const struct md_attr *ma);
335 int (*mdo_name_remove)(const struct lu_env *env,
336 struct md_object *obj,
337 const struct lu_name *lname,
338 const struct md_attr *ma);
340 int (*mdo_rename_tgt)(const struct lu_env *env, struct md_object *pobj,
341 struct md_object *tobj, const struct lu_fid *fid,
342 const struct lu_name *lname, struct md_attr *ma);
345 struct md_device_operations {
346 /** meta-data device related handlers. */
347 int (*mdo_root_get)(const struct lu_env *env, struct md_device *m,
350 int (*mdo_maxsize_get)(const struct lu_env *env, struct md_device *m,
351 int *md_size, int *cookie_size);
353 int (*mdo_statfs)(const struct lu_env *env, struct md_device *m,
356 int (*mdo_init_capa_ctxt)(const struct lu_env *env, struct md_device *m,
357 int mode, unsigned long timeout, __u32 alg,
358 struct lustre_capa_key *keys);
360 int (*mdo_update_capa_key)(const struct lu_env *env,
362 struct lustre_capa_key *key);
364 int (*mdo_llog_ctxt_get)(const struct lu_env *env,
365 struct md_device *m, int idx, void **h);
367 int (*mdo_iocontrol)(const struct lu_env *env, struct md_device *m,
368 unsigned int cmd, int len, void *data);
370 #ifdef HAVE_QUOTA_SUPPORT
371 struct md_quota_operations {
372 int (*mqo_notify)(const struct lu_env *env,
373 struct md_device *m);
375 int (*mqo_setup)(const struct lu_env *env,
379 int (*mqo_cleanup)(const struct lu_env *env,
380 struct md_device *m);
382 int (*mqo_recovery)(const struct lu_env *env,
383 struct md_device *m);
385 int (*mqo_check)(const struct lu_env *env,
389 int (*mqo_on)(const struct lu_env *env,
393 int (*mqo_off)(const struct lu_env *env,
397 int (*mqo_setinfo)(const struct lu_env *env,
401 struct obd_dqinfo *dqinfo);
403 int (*mqo_getinfo)(const struct lu_env *env,
404 const struct md_device *m,
407 struct obd_dqinfo *dqinfo);
409 int (*mqo_setquota)(const struct lu_env *env,
413 struct obd_dqblk *dqblk);
415 int (*mqo_getquota)(const struct lu_env *env,
416 const struct md_device *m,
419 struct obd_dqblk *dqblk);
421 int (*mqo_getoinfo)(const struct lu_env *env,
422 const struct md_device *m,
425 struct obd_dqinfo *dqinfo);
427 int (*mqo_getoquota)(const struct lu_env *env,
428 const struct md_device *m,
431 struct obd_dqblk *dqblk);
433 int (*mqo_invalidate)(const struct lu_env *env,
437 int (*mqo_finvalidate)(const struct lu_env *env,
444 enum md_upcall_event {
445 /** Sync the md layer*/
446 MD_LOV_SYNC = (1 << 0),
447 /** Just for split, no need trans, for replay */
448 MD_NO_TRANS = (1 << 1),
449 MD_LOV_CONFIG = (1 << 2),
450 /** Trigger quota recovery */
451 MD_LOV_QUOTA = (1 << 3)
455 /** this lock protects upcall using against its removal
456 * read lock is for usage the upcall, write - for init/fini */
457 cfs_rw_semaphore_t mu_upcall_sem;
458 /** device to call, upper layer normally */
459 struct md_device *mu_upcall_dev;
460 /** upcall function */
461 int (*mu_upcall)(const struct lu_env *env, struct md_device *md,
462 enum md_upcall_event ev, void *data);
466 struct lu_device md_lu_dev;
467 const struct md_device_operations *md_ops;
468 struct md_upcall md_upcall;
471 static inline void md_upcall_init(struct md_device *m, void *upcl)
473 cfs_init_rwsem(&m->md_upcall.mu_upcall_sem);
474 m->md_upcall.mu_upcall_dev = NULL;
475 m->md_upcall.mu_upcall = upcl;
478 static inline void md_upcall_dev_set(struct md_device *m, struct md_device *up)
480 cfs_down_write(&m->md_upcall.mu_upcall_sem);
481 m->md_upcall.mu_upcall_dev = up;
482 cfs_up_write(&m->md_upcall.mu_upcall_sem);
485 static inline void md_upcall_fini(struct md_device *m)
487 cfs_down_write(&m->md_upcall.mu_upcall_sem);
488 m->md_upcall.mu_upcall_dev = NULL;
489 m->md_upcall.mu_upcall = NULL;
490 cfs_up_write(&m->md_upcall.mu_upcall_sem);
493 static inline int md_do_upcall(const struct lu_env *env, struct md_device *m,
494 enum md_upcall_event ev, void *data)
497 cfs_down_read(&m->md_upcall.mu_upcall_sem);
498 if (m->md_upcall.mu_upcall_dev != NULL &&
499 m->md_upcall.mu_upcall_dev->md_upcall.mu_upcall != NULL) {
500 rc = m->md_upcall.mu_upcall_dev->md_upcall.mu_upcall(env,
501 m->md_upcall.mu_upcall_dev,
504 cfs_up_read(&m->md_upcall.mu_upcall_sem);
509 struct lu_object mo_lu;
510 const struct md_object_operations *mo_ops;
511 const struct md_dir_operations *mo_dir_ops;
518 struct lu_site ms_lu;
520 * mds number of this site.
524 * Fid location database
526 struct lu_server_fld *ms_server_fld;
527 struct lu_client_fld *ms_client_fld;
532 struct lu_server_seq *ms_server_seq;
535 * Controller Seq Manager
537 struct lu_server_seq *ms_control_seq;
538 struct obd_export *ms_control_exp;
543 struct lu_client_seq *ms_client_seq;
546 static inline int lu_device_is_md(const struct lu_device *d)
548 return ergo(d != NULL, d->ld_type->ldt_tags & LU_DEVICE_MD);
551 static inline struct md_device *lu2md_dev(const struct lu_device *d)
553 LASSERT(IS_ERR(d) || lu_device_is_md(d));
554 return container_of0(d, struct md_device, md_lu_dev);
557 static inline struct lu_device *md2lu_dev(struct md_device *d)
559 return &d->md_lu_dev;
562 static inline struct md_object *lu2md(const struct lu_object *o)
564 LASSERT(o == NULL || IS_ERR(o) || lu_device_is_md(o->lo_dev));
565 return container_of0(o, struct md_object, mo_lu);
568 static inline struct md_object *md_object_next(const struct md_object *obj)
570 return (obj ? lu2md(lu_object_next(&obj->mo_lu)) : NULL);
573 static inline struct md_device *md_obj2dev(const struct md_object *o)
575 LASSERT(o == NULL || IS_ERR(o) || lu_device_is_md(o->mo_lu.lo_dev));
576 return container_of0(o->mo_lu.lo_dev, struct md_device, md_lu_dev);
579 static inline struct md_site *lu_site2md(const struct lu_site *s)
581 return container_of0(s, struct md_site, ms_lu);
584 static inline int md_device_init(struct md_device *md, struct lu_device_type *t)
586 return lu_device_init(&md->md_lu_dev, t);
589 static inline void md_device_fini(struct md_device *md)
591 lu_device_fini(&md->md_lu_dev);
594 static inline struct md_object *md_object_find_slice(const struct lu_env *env,
595 struct md_device *md,
596 const struct lu_fid *f)
598 return lu2md(lu_object_find_slice(env, md2lu_dev(md), f, NULL));
603 static inline int mo_permission(const struct lu_env *env,
609 LASSERT(c->mo_ops->moo_permission);
610 return c->mo_ops->moo_permission(env, p, c, at, mask);
613 static inline int mo_attr_get(const struct lu_env *env,
617 LASSERT(m->mo_ops->moo_attr_get);
618 return m->mo_ops->moo_attr_get(env, m, at);
621 static inline int mo_readlink(const struct lu_env *env,
625 LASSERT(m->mo_ops->moo_readlink);
626 return m->mo_ops->moo_readlink(env, m, buf);
629 static inline int mo_changelog(const struct lu_env *env,
630 enum changelog_rec_type type,
631 int flags, struct md_object *m)
633 LASSERT(m->mo_ops->moo_changelog);
634 return m->mo_ops->moo_changelog(env, type, flags, m);
637 static inline int mo_attr_set(const struct lu_env *env,
639 const struct md_attr *at)
641 LASSERT(m->mo_ops->moo_attr_set);
642 return m->mo_ops->moo_attr_set(env, m, at);
645 static inline int mo_xattr_get(const struct lu_env *env,
650 LASSERT(m->mo_ops->moo_xattr_get);
651 return m->mo_ops->moo_xattr_get(env, m, buf, name);
654 static inline int mo_xattr_del(const struct lu_env *env,
658 LASSERT(m->mo_ops->moo_xattr_del);
659 return m->mo_ops->moo_xattr_del(env, m, name);
662 static inline int mo_xattr_set(const struct lu_env *env,
664 const struct lu_buf *buf,
668 LASSERT(m->mo_ops->moo_xattr_set);
669 return m->mo_ops->moo_xattr_set(env, m, buf, name, flags);
672 static inline int mo_xattr_list(const struct lu_env *env,
676 LASSERT(m->mo_ops->moo_xattr_list);
677 return m->mo_ops->moo_xattr_list(env, m, buf);
680 static inline int mo_open(const struct lu_env *env,
684 LASSERT(m->mo_ops->moo_open);
685 return m->mo_ops->moo_open(env, m, flags);
688 static inline int mo_close(const struct lu_env *env,
692 LASSERT(m->mo_ops->moo_close);
693 return m->mo_ops->moo_close(env, m, ma);
696 static inline int mo_readpage(const struct lu_env *env,
698 const struct lu_rdpg *rdpg)
700 LASSERT(m->mo_ops->moo_readpage);
701 return m->mo_ops->moo_readpage(env, m, rdpg);
704 static inline int mo_object_create(const struct lu_env *env,
706 const struct md_op_spec *spc,
709 LASSERT(m->mo_ops->moo_object_create);
710 return m->mo_ops->moo_object_create(env, m, spc, at);
713 static inline int mo_ref_add(const struct lu_env *env,
715 const struct md_attr *ma)
717 LASSERT(m->mo_ops->moo_ref_add);
718 return m->mo_ops->moo_ref_add(env, m, ma);
721 static inline int mo_ref_del(const struct lu_env *env,
725 LASSERT(m->mo_ops->moo_ref_del);
726 return m->mo_ops->moo_ref_del(env, m, ma);
729 static inline int mo_capa_get(const struct lu_env *env,
731 struct lustre_capa *c,
734 LASSERT(m->mo_ops->moo_capa_get);
735 return m->mo_ops->moo_capa_get(env, m, c, renewal);
738 static inline int mo_path(const struct lu_env *env, struct md_object *m,
739 char *path, int pathlen, __u64 *recno, int *linkno)
741 if (m->mo_ops->moo_path == NULL)
743 return m->mo_ops->moo_path(env, m, path, pathlen, recno, linkno);
746 static inline int mo_object_sync(const struct lu_env *env, struct md_object *m)
748 LASSERT(m->mo_ops->moo_object_sync);
749 return m->mo_ops->moo_object_sync(env, m);
752 static inline dt_obj_version_t mo_version_get(const struct lu_env *env,
755 LASSERT(m->mo_ops->moo_version_get);
756 return m->mo_ops->moo_version_get(env, m);
759 static inline void mo_version_set(const struct lu_env *env,
760 struct md_object *m, dt_obj_version_t ver)
762 LASSERT(m->mo_ops->moo_version_set);
763 return m->mo_ops->moo_version_set(env, m, ver);
766 static inline int mo_file_lock(const struct lu_env *env, struct md_object *m,
767 struct lov_mds_md *lmm,
768 struct ldlm_extent *extent,
769 struct lustre_handle *lockh)
771 LASSERT(m->mo_ops->moo_file_lock);
772 return m->mo_ops->moo_file_lock(env, m, lmm, extent, lockh);
775 static inline int mo_file_unlock(const struct lu_env *env, struct md_object *m,
776 struct lov_mds_md *lmm,
777 struct lustre_handle *lockh)
779 LASSERT(m->mo_ops->moo_file_unlock);
780 return m->mo_ops->moo_file_unlock(env, m, lmm, lockh);
783 static inline int mdo_lookup(const struct lu_env *env,
785 const struct lu_name *lname,
787 struct md_op_spec *spec)
789 LASSERT(p->mo_dir_ops->mdo_lookup);
790 return p->mo_dir_ops->mdo_lookup(env, p, lname, f, spec);
793 static inline mdl_mode_t mdo_lock_mode(const struct lu_env *env,
794 struct md_object *mo,
797 if (mo->mo_dir_ops->mdo_lock_mode == NULL)
799 return mo->mo_dir_ops->mdo_lock_mode(env, mo, lm);
802 static inline int mdo_create(const struct lu_env *env,
804 const struct lu_name *lchild_name,
806 struct md_op_spec *spc,
809 LASSERT(c->mo_dir_ops->mdo_create);
810 return c->mo_dir_ops->mdo_create(env, p, lchild_name, c, spc, at);
813 static inline int mdo_create_data(const struct lu_env *env,
816 const struct md_op_spec *spec,
819 LASSERT(c->mo_dir_ops->mdo_create_data);
820 return c->mo_dir_ops->mdo_create_data(env, p, c, spec, ma);
823 static inline int mdo_rename(const struct lu_env *env,
824 struct md_object *sp,
825 struct md_object *tp,
826 const struct lu_fid *lf,
827 const struct lu_name *lsname,
829 const struct lu_name *ltname,
832 LASSERT(tp->mo_dir_ops->mdo_rename);
833 return tp->mo_dir_ops->mdo_rename(env, sp, tp, lf, lsname, t, ltname,
837 static inline int mdo_is_subdir(const struct lu_env *env,
838 struct md_object *mo,
839 const struct lu_fid *fid,
842 LASSERT(mo->mo_dir_ops->mdo_is_subdir);
843 return mo->mo_dir_ops->mdo_is_subdir(env, mo, fid, sfid);
846 static inline int mdo_link(const struct lu_env *env,
849 const struct lu_name *lname,
852 LASSERT(s->mo_dir_ops->mdo_link);
853 return s->mo_dir_ops->mdo_link(env, p, s, lname, ma);
856 static inline int mdo_unlink(const struct lu_env *env,
859 const struct lu_name *lname,
862 LASSERT(c->mo_dir_ops->mdo_unlink);
863 return c->mo_dir_ops->mdo_unlink(env, p, c, lname, ma);
866 static inline int mdo_name_insert(const struct lu_env *env,
868 const struct lu_name *lname,
869 const struct lu_fid *f,
870 const struct md_attr *ma)
872 LASSERT(p->mo_dir_ops->mdo_name_insert);
873 return p->mo_dir_ops->mdo_name_insert(env, p, lname, f, ma);
876 static inline int mdo_name_remove(const struct lu_env *env,
878 const struct lu_name *lname,
879 const struct md_attr *ma)
881 LASSERT(p->mo_dir_ops->mdo_name_remove);
882 return p->mo_dir_ops->mdo_name_remove(env, p, lname, ma);
885 static inline int mdo_rename_tgt(const struct lu_env *env,
888 const struct lu_fid *lf,
889 const struct lu_name *lname,
893 LASSERT(t->mo_dir_ops->mdo_rename_tgt);
894 return t->mo_dir_ops->mdo_rename_tgt(env, p, t, lf, lname, ma);
896 LASSERT(p->mo_dir_ops->mdo_rename_tgt);
897 return p->mo_dir_ops->mdo_rename_tgt(env, p, t, lf, lname, ma);
903 * Structure to hold object information. This is used to create object
904 * \pre llod_dir exist
906 struct lu_local_obj_desc {
907 const char *llod_dir;
908 const char *llod_name;
911 const struct dt_index_features *llod_feat;
912 cfs_list_t llod_linkage;
915 struct md_object *llo_store_resolve(const struct lu_env *env,
916 struct md_device *md,
917 struct dt_device *dt,
921 struct md_object *llo_store_open(const struct lu_env *env,
922 struct md_device *md,
923 struct dt_device *dt,
928 struct md_object *llo_store_create_index(const struct lu_env *env,
929 struct md_device *md,
930 struct dt_device *dt,
933 const struct lu_fid *fid,
934 const struct dt_index_features *feat);
936 struct md_object *llo_store_create(const struct lu_env *env,
937 struct md_device *md,
938 struct dt_device *dt,
941 const struct lu_fid *fid);
943 void llo_local_obj_register(struct lu_local_obj_desc *);
944 void llo_local_obj_unregister(struct lu_local_obj_desc *);
946 int llo_local_objects_setup(const struct lu_env *env,
947 struct md_device * md,
948 struct dt_device * dt);
951 #endif /* _LINUX_MD_OBJECT_H */