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) 2011, 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/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>
62 /* LU-1051, temperary solution to reduce llog credits */
63 #define DECLARE_LLOG_REWRITE 0
64 #define DECLARE_LLOG_WRITE INT_MAX
67 struct md_device_operations;
82 /** there are at most 5 fids in one operation, see rename, NOTE the last one
83 * is a temporary one used for is_subdir() */
87 struct lu_fid mc_fid[MD_CAPAINFO_MAX];
88 struct lustre_capa *mc_capa[MD_CAPAINFO_MAX];
92 struct obd_export *mq_exp;
96 * Implemented in mdd/mdd_handler.c.
98 * XXX should be moved into separate .h/.c together with all md security
99 * related definitions.
101 struct md_capainfo *md_capainfo(const struct lu_env *env);
102 struct md_quota *md_quota(const struct lu_env *env);
104 /** metadata attributes */
108 MA_COOKIE = (1 << 2),
111 MA_ACL_DEF = (1 << 5),
112 MA_LOV_DEF = (1 << 6),
113 MA_LAY_GEN = (1 << 7),
133 MDT_REG_LOCK = (1 << 0),
134 MDT_PDO_LOCK = (1 << 1)
137 /* memory structure for hsm attributes
138 * for fields description see the on disk structure hsm_attrs
139 * which is defined in lustre_idl.h
148 #define IOEPOCH_INVAL 0
150 /* memory structure for som attributes
151 * for fields description see the on disk structure som_attrs
152 * which is defined in lustre_idl.h
167 struct lu_attr ma_attr;
168 struct lu_fid ma_pfid;
169 struct md_hsm ma_hsm;
170 struct lov_mds_md *ma_lmm;
171 struct lmv_stripe_md *ma_lmv;
173 struct llog_cookie *ma_cookie;
174 struct lustre_capa *ma_capa;
175 struct md_som_data *ma_som;
177 int ma_big_lmm_used:1;
184 /** Additional parameters for create */
187 /** symlink target */
188 const char *sp_symname;
189 /** parent FID for cross-ref mkdir */
190 const struct lu_fid *sp_pfid;
191 /** eadata for regular files */
193 /** lov objs exist already */
194 const struct lu_fid *fid;
200 /** Create flag from client: such as MDS_OPEN_CREAT, and others. */
203 /** don't create lov objects or llog cookie - this replay */
204 unsigned int no_create:1,
205 sp_cr_lookup:1, /* do lookup sanity check or not. */
206 sp_rm_entry:1; /* only remove name entry */
208 /** Current lock mode for parent dir where create is performing. */
209 mdl_mode_t sp_cr_mode;
211 /** to create directory */
212 const struct dt_index_features *sp_feat;
216 * Operations implemented for each md object (both directory and leaf).
218 struct md_object_operations {
219 int (*moo_permission)(const struct lu_env *env,
220 struct md_object *pobj, struct md_object *cobj,
221 struct md_attr *attr, int mask);
223 int (*moo_attr_get)(const struct lu_env *env, struct md_object *obj,
224 struct md_attr *attr);
226 int (*moo_attr_set)(const struct lu_env *env, struct md_object *obj,
227 const struct md_attr *attr);
229 int (*moo_xattr_get)(const struct lu_env *env, struct md_object *obj,
230 struct lu_buf *buf, const char *name);
232 int (*moo_xattr_list)(const struct lu_env *env, struct md_object *obj,
235 int (*moo_xattr_set)(const struct lu_env *env, struct md_object *obj,
236 const struct lu_buf *buf, const char *name,
239 int (*moo_xattr_del)(const struct lu_env *env, struct md_object *obj,
242 /** This method is used to swap the layouts between 2 objects */
243 int (*moo_swap_layouts)(const struct lu_env *env,
244 struct md_object *obj1, struct md_object *obj2,
247 /** \retval number of bytes actually read upon success */
248 int (*moo_readpage)(const struct lu_env *env, struct md_object *obj,
249 const struct lu_rdpg *rdpg);
251 int (*moo_readlink)(const struct lu_env *env, struct md_object *obj,
253 int (*moo_changelog)(const struct lu_env *env,
254 enum changelog_rec_type type, int flags,
255 struct md_object *obj);
256 /** part of cross-ref operation */
257 int (*moo_object_create)(const struct lu_env *env,
258 struct md_object *obj,
259 const struct md_op_spec *spec,
262 int (*moo_ref_add)(const struct lu_env *env,
263 struct md_object *obj,
264 const struct md_attr *ma);
266 int (*moo_ref_del)(const struct lu_env *env,
267 struct md_object *obj,
270 int (*moo_open)(const struct lu_env *env,
271 struct md_object *obj, int flag);
273 int (*moo_close)(const struct lu_env *env, struct md_object *obj,
274 struct md_attr *ma, int mode);
276 int (*moo_capa_get)(const struct lu_env *, struct md_object *,
277 struct lustre_capa *, int renewal);
279 int (*moo_object_sync)(const struct lu_env *, struct md_object *);
280 int (*moo_path)(const struct lu_env *env, struct md_object *obj,
281 char *path, int pathlen, __u64 *recno, int *linkno);
282 int (*moo_file_lock)(const struct lu_env *env, struct md_object *obj,
283 struct lov_mds_md *lmm, struct ldlm_extent *extent,
284 struct lustre_handle *lockh);
285 int (*moo_file_unlock)(const struct lu_env *env, struct md_object *obj,
286 struct lov_mds_md *lmm,
287 struct lustre_handle *lockh);
288 int (*moo_object_lock)(const struct lu_env *env, struct md_object *obj,
289 struct lustre_handle *lh,
290 struct ldlm_enqueue_info *einfo,
295 * Operations implemented for each directory object.
297 struct md_dir_operations {
298 int (*mdo_is_subdir) (const struct lu_env *env, struct md_object *obj,
299 const struct lu_fid *fid, struct lu_fid *sfid);
301 int (*mdo_lookup)(const struct lu_env *env, struct md_object *obj,
302 const struct lu_name *lname, struct lu_fid *fid,
303 struct md_op_spec *spec);
305 mdl_mode_t (*mdo_lock_mode)(const struct lu_env *env,
306 struct md_object *obj,
309 int (*mdo_create)(const struct lu_env *env, struct md_object *pobj,
310 const struct lu_name *lname, struct md_object *child,
311 struct md_op_spec *spec,
314 /** This method is used for creating data object for this meta object*/
315 int (*mdo_create_data)(const struct lu_env *env, struct md_object *p,
317 const struct md_op_spec *spec,
320 int (*mdo_rename)(const struct lu_env *env, struct md_object *spobj,
321 struct md_object *tpobj, const struct lu_fid *lf,
322 const struct lu_name *lsname, struct md_object *tobj,
323 const struct lu_name *ltname, struct md_attr *ma);
325 int (*mdo_link)(const struct lu_env *env, struct md_object *tgt_obj,
326 struct md_object *src_obj, const struct lu_name *lname,
329 int (*mdo_unlink)(const struct lu_env *env, struct md_object *pobj,
330 struct md_object *cobj, const struct lu_name *lname,
333 /** This method is used to compare a requested layout to an existing
334 * layout (struct lov_mds_md_v1/3 vs struct lov_mds_md_v1/3) */
335 int (*mdo_lum_lmm_cmp)(const struct lu_env *env,
336 struct md_object *cobj,
337 const struct md_op_spec *spec,
340 /** partial ops for cross-ref case */
341 int (*mdo_name_insert)(const struct lu_env *env,
342 struct md_object *obj,
343 const struct lu_name *lname,
344 const struct lu_fid *fid,
345 const struct md_attr *ma);
347 int (*mdo_name_remove)(const struct lu_env *env,
348 struct md_object *obj,
349 const struct lu_name *lname,
350 const struct md_attr *ma);
352 int (*mdo_rename_tgt)(const struct lu_env *env, struct md_object *pobj,
353 struct md_object *tobj, const struct lu_fid *fid,
354 const struct lu_name *lname, struct md_attr *ma);
357 struct md_device_operations {
358 /** meta-data device related handlers. */
359 int (*mdo_root_get)(const struct lu_env *env, struct md_device *m,
362 int (*mdo_maxsize_get)(const struct lu_env *env, struct md_device *m,
363 int *md_size, int *cookie_size);
365 int (*mdo_statfs)(const struct lu_env *env, struct md_device *m,
366 struct obd_statfs *sfs);
368 int (*mdo_init_capa_ctxt)(const struct lu_env *env, struct md_device *m,
369 int mode, unsigned long timeout, __u32 alg,
370 struct lustre_capa_key *keys);
372 int (*mdo_update_capa_key)(const struct lu_env *env,
374 struct lustre_capa_key *key);
376 int (*mdo_llog_ctxt_get)(const struct lu_env *env,
377 struct md_device *m, int idx, void **h);
379 int (*mdo_iocontrol)(const struct lu_env *env, struct md_device *m,
380 unsigned int cmd, int len, void *data);
383 enum md_upcall_event {
384 /** Sync the md layer*/
385 MD_LOV_SYNC = (1 << 0),
386 /** Just for split, no need trans, for replay */
387 MD_NO_TRANS = (1 << 1),
388 MD_LOV_CONFIG = (1 << 2),
389 /** Trigger quota recovery */
390 MD_LOV_QUOTA = (1 << 3)
394 /** this lock protects upcall using against its removal
395 * read lock is for usage the upcall, write - for init/fini */
396 struct rw_semaphore mu_upcall_sem;
397 /** device to call, upper layer normally */
398 struct md_device *mu_upcall_dev;
399 /** upcall function */
400 int (*mu_upcall)(const struct lu_env *env, struct md_device *md,
401 enum md_upcall_event ev, void *data);
405 struct lu_device md_lu_dev;
406 const struct md_device_operations *md_ops;
407 struct md_upcall md_upcall;
410 static inline void md_upcall_init(struct md_device *m, void *upcl)
412 init_rwsem(&m->md_upcall.mu_upcall_sem);
413 m->md_upcall.mu_upcall_dev = NULL;
414 m->md_upcall.mu_upcall = upcl;
417 static inline void md_upcall_dev_set(struct md_device *m, struct md_device *up)
419 down_write(&m->md_upcall.mu_upcall_sem);
420 m->md_upcall.mu_upcall_dev = up;
421 up_write(&m->md_upcall.mu_upcall_sem);
424 static inline void md_upcall_fini(struct md_device *m)
426 down_write(&m->md_upcall.mu_upcall_sem);
427 m->md_upcall.mu_upcall_dev = NULL;
428 m->md_upcall.mu_upcall = NULL;
429 up_write(&m->md_upcall.mu_upcall_sem);
432 static inline int md_do_upcall(const struct lu_env *env, struct md_device *m,
433 enum md_upcall_event ev, void *data)
436 down_read(&m->md_upcall.mu_upcall_sem);
437 if (m->md_upcall.mu_upcall_dev != NULL &&
438 m->md_upcall.mu_upcall_dev->md_upcall.mu_upcall != NULL) {
439 rc = m->md_upcall.mu_upcall_dev->md_upcall.mu_upcall(env,
440 m->md_upcall.mu_upcall_dev,
443 up_read(&m->md_upcall.mu_upcall_sem);
448 struct lu_object mo_lu;
449 const struct md_object_operations *mo_ops;
450 const struct md_dir_operations *mo_dir_ops;
456 struct seq_server_site {
457 struct lu_site *ss_lu;
459 * mds number of this site.
463 * Fid location database
465 struct lu_server_fld *ss_server_fld;
466 struct lu_client_fld *ss_client_fld;
471 struct lu_server_seq *ss_server_seq;
474 * Controller Seq Manager
476 struct lu_server_seq *ss_control_seq;
477 struct obd_export *ss_control_exp;
482 struct lu_client_seq *ss_client_seq;
485 static inline int lu_device_is_md(const struct lu_device *d)
487 return ergo(d != NULL, d->ld_type->ldt_tags & LU_DEVICE_MD);
490 static inline struct md_device *lu2md_dev(const struct lu_device *d)
492 LASSERT(IS_ERR(d) || lu_device_is_md(d));
493 return container_of0(d, struct md_device, md_lu_dev);
496 static inline struct lu_device *md2lu_dev(struct md_device *d)
498 return &d->md_lu_dev;
501 static inline struct md_object *lu2md(const struct lu_object *o)
503 LASSERT(o == NULL || IS_ERR(o) || lu_device_is_md(o->lo_dev));
504 return container_of0(o, struct md_object, mo_lu);
507 static inline struct md_object *md_object_next(const struct md_object *obj)
509 return (obj ? lu2md(lu_object_next(&obj->mo_lu)) : NULL);
512 static inline struct md_device *md_obj2dev(const struct md_object *o)
514 LASSERT(o == NULL || IS_ERR(o) || lu_device_is_md(o->mo_lu.lo_dev));
515 return container_of0(o->mo_lu.lo_dev, struct md_device, md_lu_dev);
518 static inline struct seq_server_site *lu_site2seq(const struct lu_site *s)
520 return s->ld_seq_site;
523 static inline int md_device_init(struct md_device *md, struct lu_device_type *t)
525 return lu_device_init(&md->md_lu_dev, t);
528 static inline void md_device_fini(struct md_device *md)
530 lu_device_fini(&md->md_lu_dev);
533 static inline struct md_object *md_object_find_slice(const struct lu_env *env,
534 struct md_device *md,
535 const struct lu_fid *f)
537 return lu2md(lu_object_find_slice(env, md2lu_dev(md), f, NULL));
542 static inline int mo_permission(const struct lu_env *env,
548 LASSERT(c->mo_ops->moo_permission);
549 return c->mo_ops->moo_permission(env, p, c, at, mask);
552 static inline int mo_attr_get(const struct lu_env *env,
556 LASSERT(m->mo_ops->moo_attr_get);
557 return m->mo_ops->moo_attr_get(env, m, at);
560 static inline int mo_readlink(const struct lu_env *env,
564 LASSERT(m->mo_ops->moo_readlink);
565 return m->mo_ops->moo_readlink(env, m, buf);
568 static inline int mo_changelog(const struct lu_env *env,
569 enum changelog_rec_type type,
570 int flags, struct md_object *m)
572 LASSERT(m->mo_ops->moo_changelog);
573 return m->mo_ops->moo_changelog(env, type, flags, m);
576 static inline int mo_attr_set(const struct lu_env *env,
578 const struct md_attr *at)
580 LASSERT(m->mo_ops->moo_attr_set);
581 return m->mo_ops->moo_attr_set(env, m, at);
584 static inline int mo_xattr_get(const struct lu_env *env,
589 LASSERT(m->mo_ops->moo_xattr_get);
590 return m->mo_ops->moo_xattr_get(env, m, buf, name);
593 static inline int mo_xattr_del(const struct lu_env *env,
597 LASSERT(m->mo_ops->moo_xattr_del);
598 return m->mo_ops->moo_xattr_del(env, m, name);
601 static inline int mo_xattr_set(const struct lu_env *env,
603 const struct lu_buf *buf,
607 LASSERT(m->mo_ops->moo_xattr_set);
608 return m->mo_ops->moo_xattr_set(env, m, buf, name, flags);
611 static inline int mo_xattr_list(const struct lu_env *env,
615 LASSERT(m->mo_ops->moo_xattr_list);
616 return m->mo_ops->moo_xattr_list(env, m, buf);
619 static inline int mo_swap_layouts(const struct lu_env *env,
620 struct md_object *o1,
621 struct md_object *o2, __u64 flags)
623 LASSERT(o1->mo_ops->moo_swap_layouts);
624 LASSERT(o2->mo_ops->moo_swap_layouts);
625 if (o1->mo_ops->moo_swap_layouts != o2->mo_ops->moo_swap_layouts)
627 return o1->mo_ops->moo_swap_layouts(env, o1, o2, flags);
630 static inline int mo_open(const struct lu_env *env,
634 LASSERT(m->mo_ops->moo_open);
635 return m->mo_ops->moo_open(env, m, flags);
638 static inline int mo_close(const struct lu_env *env,
643 LASSERT(m->mo_ops->moo_close);
644 return m->mo_ops->moo_close(env, m, ma, mode);
647 static inline int mo_readpage(const struct lu_env *env,
649 const struct lu_rdpg *rdpg)
651 LASSERT(m->mo_ops->moo_readpage);
652 return m->mo_ops->moo_readpage(env, m, rdpg);
655 static inline int mo_object_create(const struct lu_env *env,
657 const struct md_op_spec *spc,
660 LASSERT(m->mo_ops->moo_object_create);
661 return m->mo_ops->moo_object_create(env, m, spc, at);
664 static inline int mo_ref_add(const struct lu_env *env,
666 const struct md_attr *ma)
668 LASSERT(m->mo_ops->moo_ref_add);
669 return m->mo_ops->moo_ref_add(env, m, ma);
672 static inline int mo_ref_del(const struct lu_env *env,
676 LASSERT(m->mo_ops->moo_ref_del);
677 return m->mo_ops->moo_ref_del(env, m, ma);
680 static inline int mo_capa_get(const struct lu_env *env,
682 struct lustre_capa *c,
685 LASSERT(m->mo_ops->moo_capa_get);
686 return m->mo_ops->moo_capa_get(env, m, c, renewal);
689 static inline int mo_path(const struct lu_env *env, struct md_object *m,
690 char *path, int pathlen, __u64 *recno, int *linkno)
692 if (m->mo_ops->moo_path == NULL)
694 return m->mo_ops->moo_path(env, m, path, pathlen, recno, linkno);
697 static inline int mo_object_sync(const struct lu_env *env, struct md_object *m)
699 LASSERT(m->mo_ops->moo_object_sync);
700 return m->mo_ops->moo_object_sync(env, m);
703 static inline int mo_file_lock(const struct lu_env *env, struct md_object *m,
704 struct lov_mds_md *lmm,
705 struct ldlm_extent *extent,
706 struct lustre_handle *lockh)
708 LASSERT(m->mo_ops->moo_file_lock);
709 return m->mo_ops->moo_file_lock(env, m, lmm, extent, lockh);
712 static inline int mo_file_unlock(const struct lu_env *env, struct md_object *m,
713 struct lov_mds_md *lmm,
714 struct lustre_handle *lockh)
716 LASSERT(m->mo_ops->moo_file_unlock);
717 return m->mo_ops->moo_file_unlock(env, m, lmm, lockh);
720 static inline int mo_object_lock(const struct lu_env *env,
722 struct lustre_handle *lh,
723 struct ldlm_enqueue_info *einfo,
726 LASSERT(m->mo_ops->moo_object_lock);
727 return m->mo_ops->moo_object_lock(env, m, lh, einfo, policy);
730 static inline int mdo_lookup(const struct lu_env *env,
732 const struct lu_name *lname,
734 struct md_op_spec *spec)
736 LASSERT(p->mo_dir_ops->mdo_lookup);
737 return p->mo_dir_ops->mdo_lookup(env, p, lname, f, spec);
740 static inline mdl_mode_t mdo_lock_mode(const struct lu_env *env,
741 struct md_object *mo,
744 if (mo->mo_dir_ops->mdo_lock_mode == NULL)
746 return mo->mo_dir_ops->mdo_lock_mode(env, mo, lm);
749 static inline int mdo_create(const struct lu_env *env,
751 const struct lu_name *lchild_name,
753 struct md_op_spec *spc,
756 LASSERT(p->mo_dir_ops->mdo_create);
757 return p->mo_dir_ops->mdo_create(env, p, lchild_name, c, spc, at);
760 static inline int mdo_create_data(const struct lu_env *env,
763 const struct md_op_spec *spec,
766 LASSERT(c->mo_dir_ops->mdo_create_data);
767 return c->mo_dir_ops->mdo_create_data(env, p, c, spec, ma);
770 static inline int mdo_rename(const struct lu_env *env,
771 struct md_object *sp,
772 struct md_object *tp,
773 const struct lu_fid *lf,
774 const struct lu_name *lsname,
776 const struct lu_name *ltname,
779 LASSERT(tp->mo_dir_ops->mdo_rename);
780 return tp->mo_dir_ops->mdo_rename(env, sp, tp, lf, lsname, t, ltname,
784 static inline int mdo_is_subdir(const struct lu_env *env,
785 struct md_object *mo,
786 const struct lu_fid *fid,
789 LASSERT(mo->mo_dir_ops->mdo_is_subdir);
790 return mo->mo_dir_ops->mdo_is_subdir(env, mo, fid, sfid);
793 static inline int mdo_link(const struct lu_env *env,
796 const struct lu_name *lname,
799 LASSERT(s->mo_dir_ops->mdo_link);
800 return s->mo_dir_ops->mdo_link(env, p, s, lname, ma);
803 static inline int mdo_unlink(const struct lu_env *env,
806 const struct lu_name *lname,
809 LASSERT(p->mo_dir_ops->mdo_unlink);
810 return p->mo_dir_ops->mdo_unlink(env, p, c, lname, ma);
813 static inline int mdo_lum_lmm_cmp(const struct lu_env *env,
815 const struct md_op_spec *spec,
818 LASSERT(c->mo_dir_ops->mdo_lum_lmm_cmp);
819 return c->mo_dir_ops->mdo_lum_lmm_cmp(env, c, spec, ma);
822 static inline int mdo_name_insert(const struct lu_env *env,
824 const struct lu_name *lname,
825 const struct lu_fid *f,
826 const struct md_attr *ma)
828 LASSERT(p->mo_dir_ops->mdo_name_insert);
829 return p->mo_dir_ops->mdo_name_insert(env, p, lname, f, ma);
832 static inline int mdo_name_remove(const struct lu_env *env,
834 const struct lu_name *lname,
835 const struct md_attr *ma)
837 LASSERT(p->mo_dir_ops->mdo_name_remove);
838 return p->mo_dir_ops->mdo_name_remove(env, p, lname, ma);
841 static inline int mdo_rename_tgt(const struct lu_env *env,
844 const struct lu_fid *lf,
845 const struct lu_name *lname,
849 LASSERT(t->mo_dir_ops->mdo_rename_tgt);
850 return t->mo_dir_ops->mdo_rename_tgt(env, p, t, lf, lname, ma);
852 LASSERT(p->mo_dir_ops->mdo_rename_tgt);
853 return p->mo_dir_ops->mdo_rename_tgt(env, p, t, lf, lname, ma);
858 * Used in MDD/OUT layer for object lock rule
860 enum mdd_object_role {
870 * Structure to hold object information. This is used to create object
871 * \pre llod_dir exist
873 struct lu_local_obj_desc {
874 const char *llod_dir;
875 const char *llod_name;
878 const struct dt_index_features *llod_feat;
879 cfs_list_t llod_linkage;
882 struct md_object *llo_store_resolve(const struct lu_env *env,
883 struct md_device *md,
884 struct dt_device *dt,
888 struct md_object *llo_store_open(const struct lu_env *env,
889 struct md_device *md,
890 struct dt_device *dt,
895 struct md_object *llo_store_create_index(const struct lu_env *env,
896 struct md_device *md,
897 struct dt_device *dt,
900 const struct lu_fid *fid,
901 const struct dt_index_features *feat);
903 struct md_object *llo_store_create(const struct lu_env *env,
904 struct md_device *md,
905 struct dt_device *dt,
908 const struct lu_fid *fid);
910 void llo_local_obj_register(struct lu_local_obj_desc *);
911 void llo_local_obj_unregister(struct lu_local_obj_desc *);
913 int llo_local_objects_setup(const struct lu_env *env,
914 struct md_device * md,
915 struct dt_device * dt);
917 int lustre_buf2som(void *buf, int rc, struct md_som_data *msd);
918 int lustre_buf2hsm(void *buf, int rc, struct md_hsm *mh);
919 void lustre_hsm2buf(void *buf, struct md_hsm *mh);
921 #define md_cap_t(x) (x)
923 #define MD_CAP_TO_MASK(x) (1 << (x))
925 #define md_cap_raised(c, flag) (md_cap_t(c) & MD_CAP_TO_MASK(flag))
927 /* capable() is copied from linux kernel! */
928 static inline int md_capable(struct lu_ucred *uc, cfs_cap_t cap)
930 if (md_cap_raised(uc->uc_cap, cap))
936 #endif /* _LINUX_MD_OBJECT_H */