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, 2013, 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_internal.h
38 * Author: Wang Di <wangdi@clusterfs.com>
41 #ifndef _MDD_INTERNAL_H
42 #define _MDD_INTERNAL_H
44 #include <lustre_acl.h>
45 #include <lustre_eacl.h>
46 #include <md_object.h>
47 #include <dt_object.h>
48 #include <lustre_lfsck.h>
49 #include <lustre_fid.h>
50 #include <lustre_capa.h>
51 #include <lprocfs_status.h>
52 #include <lustre_log.h>
53 #include <lustre_linkea.h>
56 /** changelog is recording */
57 #define CLM_ON 0x00001
58 /** internal error prevented changelogs from starting */
59 #define CLM_ERR 0x00002
61 /** changelogs turned on */
62 #define CLM_START 0x10000
63 /** changelogs turned off */
64 #define CLM_FINI 0x20000
65 /** some changelog records purged */
66 #define CLM_PURGE 0x40000
68 struct mdd_changelog {
69 spinlock_t mc_lock; /* for index */
74 spinlock_t mc_user_lock;
78 static inline __u64 cl_time(void) {
81 cfs_fs_time_current(&time);
82 return (((__u64)time.tv_sec) << 30) + time.tv_nsec;
85 /** Objects in .lustre dir */
86 struct mdd_dot_lustre_objs {
87 struct mdd_object *mdd_obf;
88 struct mdd_object *mdd_lpf;
91 struct mdd_generic_thread {
92 struct completion mgt_started;
93 struct completion mgt_finished;
100 struct md_device mdd_md_dev;
101 struct obd_export *mdd_child_exp;
102 struct dt_device *mdd_child;
103 struct dt_device *mdd_bottom;
104 struct lu_fid mdd_root_fid; /* /ROOT */
105 struct lu_fid mdd_local_root_fid;
106 struct dt_device_param mdd_dt_conf;
107 struct dt_object *mdd_orphans; /* PENDING directory */
108 struct proc_dir_entry *mdd_proc_entry;
109 struct mdd_changelog mdd_cl;
110 unsigned long mdd_atime_diff;
111 struct mdd_object *mdd_dot_lustre;
112 struct mdd_dot_lustre_objs mdd_dot_lustre_objs;
113 unsigned int mdd_sync_permission;
115 struct local_oid_storage *mdd_los;
116 struct mdd_generic_thread mdd_orph_cleanup_thread;
120 /* The dir object has been unlinked */
128 struct md_object mod_obj;
133 unsigned long mod_flags;
136 struct mdd_thread_info {
137 struct lu_fid mti_fid;
138 struct lu_fid mti_fid2; /* used for be & cpu converting */
140 * only be used by MDD interfaces, can be passed into local MDD APIs.
142 struct lu_attr mti_pattr;
143 struct lu_attr mti_cattr;
144 struct lu_attr mti_tpattr;
145 struct lu_attr mti_tattr;
146 /** used to set c/mtime */
147 struct lu_attr mti_la_for_fix;
148 /* Only used in mdd_object_start */
149 struct lu_attr mti_la_for_start;
150 /* mti_ent and mti_key must be conjoint,
151 * then mti_ent::lde_name will be mti_key. */
152 struct lu_dirent mti_ent;
153 char mti_key[NAME_MAX + 16];
154 struct lu_buf mti_buf[4];
155 struct lu_buf mti_big_buf; /* biggish persistent buf */
156 struct lu_buf mti_link_buf; /* buf for link ea */
158 char mti_xattr_buf[LUSTRE_POSIX_ACL_MAX_SIZE];
159 struct dt_allocation_hint mti_hint;
160 struct dt_object_format mti_dof;
161 struct linkea_data mti_link_data;
162 struct md_op_spec mti_spec;
163 struct dt_insert_rec mti_dt_rec;
166 extern const char orph_index_name[];
168 int mdd_la_get(const struct lu_env *env, struct mdd_object *obj,
169 struct lu_attr *la, struct lustre_capa *capa);
170 void mdd_flags_xlate(struct mdd_object *obj, __u32 flags);
171 int mdd_attr_get(const struct lu_env *env, struct md_object *obj,
173 int mdd_attr_set(const struct lu_env *env, struct md_object *obj,
174 const struct md_attr *ma);
175 int mdd_attr_set_internal(const struct lu_env *env,
176 struct mdd_object *obj,
177 const struct lu_attr *attr,
178 struct thandle *handle,
180 int mdd_update_time(const struct lu_env *env, struct mdd_object *obj,
181 const struct lu_attr *oattr, struct lu_attr *attr,
182 struct thandle *handle);
183 int mdd_object_create_internal(const struct lu_env *env, struct mdd_object *p,
184 struct mdd_object *c, struct lu_attr *attr,
185 struct thandle *handle,
186 const struct md_op_spec *spec,
187 struct dt_allocation_hint *hint);
190 void mdd_write_lock(const struct lu_env *env, struct mdd_object *obj,
191 enum mdd_object_role role);
192 void mdd_read_lock(const struct lu_env *env, struct mdd_object *obj,
193 enum mdd_object_role role);
194 void mdd_write_unlock(const struct lu_env *env, struct mdd_object *obj);
195 void mdd_read_unlock(const struct lu_env *env, struct mdd_object *obj);
196 int mdd_write_locked(const struct lu_env *env, struct mdd_object *obj);
199 int mdd_is_subdir(const struct lu_env *env, struct md_object *mo,
200 const struct lu_fid *fid, struct lu_fid *sfid);
201 int mdd_may_create(const struct lu_env *env, struct mdd_object *pobj,
202 const struct lu_attr *pattr, struct mdd_object *cobj,
204 int mdd_may_unlink(const struct lu_env *env, struct mdd_object *pobj,
205 const struct lu_attr *pattr, const struct lu_attr *attr);
206 int mdd_may_delete(const struct lu_env *env, struct mdd_object *tpobj,
207 const struct lu_attr *tpattr, struct mdd_object *tobj,
208 const struct lu_attr *tattr, const struct lu_attr *cattr,
209 int check_perm, int check_empty);
210 int mdd_unlink_sanity_check(const struct lu_env *env, struct mdd_object *pobj,
211 const struct lu_attr *pattr,
212 struct mdd_object *cobj,
213 const struct lu_attr *cattr);
214 int mdd_finish_unlink(const struct lu_env *env, struct mdd_object *obj,
215 struct md_attr *ma, const struct mdd_object *pobj,
216 const struct lu_name *lname, struct thandle *th);
218 int mdd_is_root(struct mdd_device *mdd, const struct lu_fid *fid);
219 int mdd_lookup(const struct lu_env *env,
220 struct md_object *pobj, const struct lu_name *lname,
221 struct lu_fid* fid, struct md_op_spec *spec);
222 int mdd_links_read(const struct lu_env *env, struct mdd_object *mdd_obj,
223 struct linkea_data *ldata);
224 int mdd_declare_links_add(const struct lu_env *env, struct mdd_object *mdd_obj,
225 struct thandle *handle, struct linkea_data *ldata);
226 int mdd_links_write(const struct lu_env *env, struct mdd_object *mdd_obj,
227 struct linkea_data *ldata, struct thandle *handle);
228 struct lu_buf *mdd_links_get(const struct lu_env *env,
229 struct mdd_object *mdd_obj);
230 int mdd_links_rename(const struct lu_env *env,
231 struct mdd_object *mdd_obj,
232 const struct lu_fid *oldpfid,
233 const struct lu_name *oldlname,
234 const struct lu_fid *newpfid,
235 const struct lu_name *newlname,
236 struct thandle *handle,
237 struct linkea_data *ldata,
238 int first, int check);
240 struct mdd_thread_info *mdd_env_info(const struct lu_env *env);
242 #define MDD_ENV_VAR(env, var) (&mdd_env_info(env)->mti_##var)
244 struct lu_buf *mdd_buf_get(const struct lu_env *env, void *area, ssize_t len);
245 const struct lu_buf *mdd_buf_get_const(const struct lu_env *env,
246 const void *area, ssize_t len);
248 int mdd_orphan_cleanup(const struct lu_env *env, struct mdd_device *d);
249 int __mdd_orphan_add(const struct lu_env *, struct mdd_object *,
251 int __mdd_orphan_del(const struct lu_env *, struct mdd_object *,
253 int orph_index_init(const struct lu_env *env, struct mdd_device *mdd);
254 void orph_index_fini(const struct lu_env *env, struct mdd_device *mdd);
255 int orph_declare_index_insert(const struct lu_env *, struct mdd_object *,
256 umode_t mode, struct thandle *);
257 int orph_declare_index_delete(const struct lu_env *, struct mdd_object *,
261 int mdd_procfs_init(struct mdd_device *mdd, const char *name);
262 void mdd_procfs_fini(struct mdd_device *mdd);
265 extern struct kmem_cache *mdd_object_kmem;
266 extern const struct md_dir_operations mdd_dir_ops;
267 extern const struct md_object_operations mdd_obj_ops;
268 int mdd_readlink(const struct lu_env *env, struct md_object *obj,
270 int accmode(const struct lu_env *env, const struct lu_attr *la, int flags);
271 extern struct lu_context_key mdd_thread_key;
272 extern const struct lu_device_operations mdd_lu_ops;
274 struct mdd_object *mdd_object_find(const struct lu_env *env,
275 struct mdd_device *d,
276 const struct lu_fid *f);
277 int mdd_readpage(const struct lu_env *env, struct md_object *obj,
278 const struct lu_rdpg *rdpg);
279 int mdd_declare_changelog_store(const struct lu_env *env,
280 struct mdd_device *mdd,
281 const struct lu_name *fname,
282 struct thandle *handle);
283 int mdd_changelog_store(const struct lu_env *env, struct mdd_device *mdd,
284 struct llog_changelog_rec *rec, struct thandle *th);
285 int mdd_changelog_data_store(const struct lu_env *env, struct mdd_device *mdd,
286 enum changelog_rec_type type, int flags,
287 struct mdd_object *mdd_obj,
288 struct thandle *handle);
289 int mdd_changelog_ns_store(const struct lu_env *env, struct mdd_device *mdd,
290 enum changelog_rec_type type, unsigned flags,
291 struct mdd_object *target, struct mdd_object *parent,
292 const struct lu_name *tname, struct thandle *handle);
293 int mdd_declare_object_create_internal(const struct lu_env *env,
294 struct mdd_object *p,
295 struct mdd_object *c,
296 struct lu_attr *attr,
297 struct thandle *handle,
298 const struct md_op_spec *spec,
299 struct dt_allocation_hint *hint);
300 int mdd_get_lov_ea(const struct lu_env *env, struct mdd_object *obj,
301 struct lu_buf *lmm_buf);
304 void mdd_object_make_hint(const struct lu_env *env, struct mdd_object *parent,
305 struct mdd_object *child, const struct lu_attr *attr,
306 const struct md_op_spec *spec,
307 struct dt_allocation_hint *hint);
309 static inline void mdd_object_get(struct mdd_object *o)
311 lu_object_get(&o->mod_obj.mo_lu);
314 static inline void mdd_object_put(const struct lu_env *env,
315 struct mdd_object *o)
317 lu_object_put(env, &o->mod_obj.mo_lu);
320 struct thandle *mdd_trans_create(const struct lu_env *env,
321 struct mdd_device *mdd);
322 int mdd_trans_start(const struct lu_env *env, struct mdd_device *mdd,
324 int mdd_trans_stop(const struct lu_env *env, struct mdd_device *mdd,
325 int rc, struct thandle *handle);
328 struct lu_object *mdd_object_alloc(const struct lu_env *env,
329 const struct lu_object_header *hdr,
330 struct lu_device *d);
331 int mdd_local_file_create(const struct lu_env *env, struct mdd_device *mdd,
332 const struct lu_fid *pfid, const char *name,
333 __u32 mode, struct lu_fid *fid);
335 int mdd_acl_chmod(const struct lu_env *env, struct mdd_object *o, __u32 mode,
336 struct thandle *handle);
337 int mdd_acl_set(const struct lu_env *env, struct mdd_object *obj,
338 struct lu_attr *attr, const struct lu_buf *buf, int fl);
339 int __mdd_fix_mode_acl(const struct lu_env *env, struct lu_buf *buf,
341 int __mdd_permission_internal(const struct lu_env *env, struct mdd_object *obj,
342 const struct lu_attr *la, int mask, int role);
343 int mdd_permission(const struct lu_env *env,
344 struct md_object *pobj, struct md_object *cobj,
345 struct md_attr *ma, int mask);
346 int mdd_capa_get(const struct lu_env *env, struct md_object *obj,
347 struct lustre_capa *capa, int renewal);
348 int mdd_generic_thread_start(struct mdd_generic_thread *thread,
349 int (*func)(void *), void *data, char *name);
350 void mdd_generic_thread_stop(struct mdd_generic_thread *thread);
353 int mdd_compat_fixes(const struct lu_env *env, struct mdd_device *mdd);
355 /* inline functions */
356 static inline int lu_device_is_mdd(struct lu_device *d)
358 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &mdd_lu_ops);
361 static inline struct mdd_device* lu2mdd_dev(struct lu_device *d)
363 LASSERT(lu_device_is_mdd(d));
364 return container_of0(d, struct mdd_device, mdd_md_dev.md_lu_dev);
367 static inline struct lu_device *mdd2lu_dev(struct mdd_device *d)
369 return (&d->mdd_md_dev.md_lu_dev);
372 static inline struct mdd_object *lu2mdd_obj(struct lu_object *o)
374 LASSERT(ergo(o != NULL, lu_device_is_mdd(o->lo_dev)));
375 return container_of0(o, struct mdd_object, mod_obj.mo_lu);
378 static inline struct mdd_device* mdo2mdd(struct md_object *mdo)
380 return lu2mdd_dev(mdo->mo_lu.lo_dev);
383 static inline struct mdd_object* md2mdd_obj(struct md_object *mdo)
385 return container_of0(mdo, struct mdd_object, mod_obj);
388 static inline const struct dt_device_operations *
389 mdd_child_ops(struct mdd_device *d)
391 return d->mdd_child->dd_ops;
394 static inline struct lu_object *mdd2lu_obj(struct mdd_object *obj)
396 return &obj->mod_obj.mo_lu;
399 static inline struct dt_object* mdd_object_child(struct mdd_object *o)
401 return container_of0(lu_object_next(mdd2lu_obj(o)),
402 struct dt_object, do_lu);
405 static inline struct obd_device *mdd2obd_dev(struct mdd_device *mdd)
407 return (mdd->mdd_md_dev.md_lu_dev.ld_obd);
410 static inline struct mdd_device *mdd_obj2mdd_dev(struct mdd_object *obj)
412 return mdo2mdd(&obj->mod_obj);
415 static inline const struct lu_fid *mdo2fid(const struct mdd_object *obj)
417 return lu_object_fid(&obj->mod_obj.mo_lu);
420 static inline umode_t mdd_object_type(const struct mdd_object *obj)
422 return lu_object_attr(&obj->mod_obj.mo_lu);
425 static inline int mdd_is_immutable(struct mdd_object *obj)
427 return obj->mod_flags & IMMUTE_OBJ;
430 static inline int mdd_is_dead_obj(struct mdd_object *obj)
432 return obj && obj->mod_flags & DEAD_OBJ;
435 static inline int mdd_is_append(struct mdd_object *obj)
437 return obj->mod_flags & APPEND_OBJ;
440 static inline int mdd_object_exists(struct mdd_object *obj)
442 return lu_object_exists(mdd2lu_obj(obj));
445 static inline int mdd_object_remote(struct mdd_object *obj)
447 return lu_object_remote(mdd2lu_obj(obj));
450 static inline const struct lu_fid *mdd_object_fid(struct mdd_object *obj)
452 return lu_object_fid(mdd2lu_obj(obj));
455 static inline struct seq_server_site *mdd_seq_site(struct mdd_device *mdd)
457 return mdd2lu_dev(mdd)->ld_site->ld_seq_site;
460 static inline struct lustre_capa *mdd_object_capa(const struct lu_env *env,
461 const struct mdd_object *obj)
463 struct lu_capainfo *lci = lu_capainfo_get(env);
464 const struct lu_fid *fid = mdo2fid(obj);
467 /* NB: in mdt_init0 */
471 for (i = 0; i < LU_CAPAINFO_MAX; i++)
472 if (lu_fid_eq(&lci->lci_fid[i], fid))
473 return lci->lci_capa[i];
477 static inline void mdd_set_capainfo(const struct lu_env *env, int offset,
478 const struct mdd_object *obj,
479 struct lustre_capa *capa)
481 struct lu_capainfo *lci = lu_capainfo_get(env);
482 const struct lu_fid *fid = mdo2fid(obj);
484 LASSERT(offset >= 0 && offset < LU_CAPAINFO_MAX);
485 /* NB: in mdt_init0 */
489 lci->lci_fid[offset] = *fid;
490 lci->lci_capa[offset] = capa;
493 static inline const char *mdd_obj_dev_name(const struct mdd_object *obj)
495 return lu_dev_name(obj->mod_obj.mo_lu.lo_dev);
498 #define MAX_ATIME_DIFF 60
500 static inline int mdd_permission_internal(const struct lu_env *env,
501 struct mdd_object *obj,
502 const struct lu_attr *la, int mask)
504 return __mdd_permission_internal(env, obj, la, mask, -1);
507 static inline int mdd_permission_internal_locked(const struct lu_env *env,
508 struct mdd_object *obj,
509 const struct lu_attr *la,
511 enum mdd_object_role role)
513 return __mdd_permission_internal(env, obj, la, mask, role);
516 /* mdd inline func for calling osd_dt_object ops */
517 static inline int mdo_attr_get(const struct lu_env *env, struct mdd_object *obj,
518 struct lu_attr *la, struct lustre_capa *capa)
520 struct dt_object *next = mdd_object_child(obj);
521 return dt_attr_get(env, next, la, capa);
524 static inline int mdo_declare_attr_set(const struct lu_env *env,
525 struct mdd_object *obj,
526 const struct lu_attr *la,
527 struct thandle *handle)
529 struct dt_object *next = mdd_object_child(obj);
530 return dt_declare_attr_set(env, next, la, handle);
533 static inline int mdo_attr_set(const struct lu_env *env,
534 struct mdd_object *obj,
535 const struct lu_attr *la,
536 struct thandle *handle,
537 struct lustre_capa *capa)
539 struct dt_object *next = mdd_object_child(obj);
541 if (!mdd_object_exists(obj))
544 return dt_attr_set(env, next, la, handle, capa);
547 static inline int mdo_xattr_get(const struct lu_env *env,struct mdd_object *obj,
548 struct lu_buf *buf, const char *name,
549 struct lustre_capa *capa)
551 struct dt_object *next = mdd_object_child(obj);
552 return dt_xattr_get(env, next, buf, name, capa);
555 static inline int mdo_declare_xattr_set(const struct lu_env *env,
556 struct mdd_object *obj,
557 const struct lu_buf *buf,
559 int fl, struct thandle *handle)
561 struct dt_object *next = mdd_object_child(obj);
562 return dt_declare_xattr_set(env, next, buf, name, fl, handle);
565 static inline int mdo_xattr_set(const struct lu_env *env,struct mdd_object *obj,
566 const struct lu_buf *buf, const char *name,
567 int fl, struct thandle *handle,
568 struct lustre_capa *capa)
570 struct dt_object *next = mdd_object_child(obj);
572 if (!mdd_object_exists(obj))
575 return dt_xattr_set(env, next, buf, name, fl, handle, capa);
578 static inline int mdo_declare_xattr_del(const struct lu_env *env,
579 struct mdd_object *obj,
581 struct thandle *handle)
583 struct dt_object *next = mdd_object_child(obj);
584 return dt_declare_xattr_del(env, next, name, handle);
587 static inline int mdo_xattr_del(const struct lu_env *env,struct mdd_object *obj,
588 const char *name, struct thandle *handle,
589 struct lustre_capa *capa)
591 struct dt_object *next = mdd_object_child(obj);
593 if (!mdd_object_exists(obj))
596 return dt_xattr_del(env, next, name, handle, capa);
600 mdo_xattr_list(const struct lu_env *env, struct mdd_object *obj,
601 struct lu_buf *buf, struct lustre_capa *capa)
603 struct dt_object *next = mdd_object_child(obj);
605 if (!mdd_object_exists(obj))
608 return dt_xattr_list(env, next, buf, capa);
612 int mdo_declare_index_insert(const struct lu_env *env, struct mdd_object *obj,
613 const struct lu_fid *fid, __u32 type,
614 const char *name, struct thandle *handle)
616 struct dt_object *next = mdd_object_child(obj);
620 * if the object doesn't exist yet, then it's supposed to be created
621 * and declaration of the creation should be enough to insert ./..
624 /* FIXME: remote object should not be awared by MDD layer, but local
625 * creation does not declare insert ./.. (comments above), which
626 * is required by remote directory creation.
627 * This remote check should be removed when mdd_object_exists check is
630 if (mdd_object_exists(obj) || mdd_object_remote(obj)) {
632 if (dt_try_as_dir(env, next)) {
633 struct dt_insert_rec *rec =
634 &mdd_env_info(env)->mti_dt_rec;
637 rec->rec_type = type;
638 rc = dt_declare_insert(env, next,
639 (const struct dt_rec *)rec,
640 (const struct dt_key *)name,
649 int mdo_declare_index_delete(const struct lu_env *env, struct mdd_object *obj,
650 const char *name, struct thandle *handle)
652 struct dt_object *next = mdd_object_child(obj);
654 if (!dt_try_as_dir(env, next))
657 return dt_declare_delete(env, next, (const struct dt_key *)name,
661 static inline int mdo_declare_ref_add(const struct lu_env *env,
662 struct mdd_object *obj,
663 struct thandle *handle)
665 struct dt_object *next = mdd_object_child(obj);
666 return dt_declare_ref_add(env, next, handle);
669 static inline int mdo_ref_add(const struct lu_env *env, struct mdd_object *obj,
670 struct thandle *handle)
672 struct dt_object *next = mdd_object_child(obj);
674 if (!mdd_object_exists(obj))
677 return dt_ref_add(env, next, handle);
680 static inline int mdo_declare_ref_del(const struct lu_env *env,
681 struct mdd_object *obj,
682 struct thandle *handle)
684 struct dt_object *next = mdd_object_child(obj);
685 return dt_declare_ref_del(env, next, handle);
688 static inline int mdo_ref_del(const struct lu_env *env, struct mdd_object *obj,
689 struct thandle *handle)
691 struct dt_object *next = mdd_object_child(obj);
693 if (!mdd_object_exists(obj))
696 return dt_ref_del(env, next, handle);
700 mdo_declare_create_obj(const struct lu_env *env, struct mdd_object *o,
701 struct lu_attr *attr,
702 struct dt_allocation_hint *hint,
703 struct dt_object_format *dof,
704 struct thandle *handle)
706 struct dt_object *next = mdd_object_child(o);
707 return dt_declare_create(env, next, attr, hint, dof, handle);
711 mdo_create_obj(const struct lu_env *env, struct mdd_object *o,
712 struct lu_attr *attr,
713 struct dt_allocation_hint *hint,
714 struct dt_object_format *dof,
715 struct thandle *handle)
717 struct dt_object *next = mdd_object_child(o);
718 return dt_create(env, next, attr, hint, dof, handle);
722 int mdo_declare_destroy(const struct lu_env *env, struct mdd_object *o,
723 struct thandle *handle)
725 struct dt_object *next = mdd_object_child(o);
726 return dt_declare_destroy(env, next, handle);
730 int mdo_destroy(const struct lu_env *env, struct mdd_object *o,
731 struct thandle *handle)
733 struct dt_object *next = mdd_object_child(o);
734 return dt_destroy(env, next, handle);
737 static inline struct obd_capa *
738 mdo_capa_get(const struct lu_env *env, struct mdd_object *obj,
739 struct lustre_capa *old, __u64 opc)
741 struct dt_object *next = mdd_object_child(obj);
743 if (!mdd_object_exists(obj))
744 return ERR_PTR(-ENOENT);
746 return dt_capa_get(env, next, old, opc);