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;
183 /** Additional parameters for create */
186 /** symlink target */
187 const char *sp_symname;
188 /** parent FID for cross-ref mkdir */
189 const struct lu_fid *sp_pfid;
190 /** eadata for regular files */
192 /** lov objs exist already */
193 const struct lu_fid *fid;
199 /** Create flag from client: such as MDS_OPEN_CREAT, and others. */
202 /** don't create lov objects or llog cookie - this replay */
203 unsigned int no_create:1,
204 sp_cr_lookup:1, /* do lookup sanity check or not. */
205 sp_rm_entry:1; /* only remove name entry */
207 /** Current lock mode for parent dir where create is performing. */
208 mdl_mode_t sp_cr_mode;
210 /** to create directory */
211 const struct dt_index_features *sp_feat;
215 * Operations implemented for each md object (both directory and leaf).
217 struct md_object_operations {
218 int (*moo_permission)(const struct lu_env *env,
219 struct md_object *pobj, struct md_object *cobj,
220 struct md_attr *attr, int mask);
222 int (*moo_attr_get)(const struct lu_env *env, struct md_object *obj,
223 struct md_attr *attr);
225 int (*moo_attr_set)(const struct lu_env *env, struct md_object *obj,
226 const struct md_attr *attr);
228 int (*moo_xattr_get)(const struct lu_env *env, struct md_object *obj,
229 struct lu_buf *buf, const char *name);
231 int (*moo_xattr_list)(const struct lu_env *env, struct md_object *obj,
234 int (*moo_xattr_set)(const struct lu_env *env, struct md_object *obj,
235 const struct lu_buf *buf, const char *name,
238 int (*moo_xattr_del)(const struct lu_env *env, struct md_object *obj,
241 /** This method is used to swap the layouts between 2 objects */
242 int (*moo_swap_layouts)(const struct lu_env *env,
243 struct md_object *obj1, struct md_object *obj2,
246 /** \retval number of bytes actually read upon success */
247 int (*moo_readpage)(const struct lu_env *env, struct md_object *obj,
248 const struct lu_rdpg *rdpg);
250 int (*moo_readlink)(const struct lu_env *env, struct md_object *obj,
252 int (*moo_changelog)(const struct lu_env *env,
253 enum changelog_rec_type type, int flags,
254 struct md_object *obj);
255 /** part of cross-ref operation */
256 int (*moo_object_create)(const struct lu_env *env,
257 struct md_object *obj,
258 const struct md_op_spec *spec,
261 int (*moo_ref_add)(const struct lu_env *env,
262 struct md_object *obj,
263 const struct md_attr *ma);
265 int (*moo_ref_del)(const struct lu_env *env,
266 struct md_object *obj,
269 int (*moo_open)(const struct lu_env *env,
270 struct md_object *obj, int flag);
272 int (*moo_close)(const struct lu_env *env, struct md_object *obj,
273 struct md_attr *ma, int mode);
275 int (*moo_capa_get)(const struct lu_env *, struct md_object *,
276 struct lustre_capa *, int renewal);
278 int (*moo_object_sync)(const struct lu_env *, struct md_object *);
280 int (*moo_file_lock)(const struct lu_env *env, struct md_object *obj,
281 struct lov_mds_md *lmm, struct ldlm_extent *extent,
282 struct lustre_handle *lockh);
283 int (*moo_file_unlock)(const struct lu_env *env, struct md_object *obj,
284 struct lov_mds_md *lmm,
285 struct lustre_handle *lockh);
286 int (*moo_object_lock)(const struct lu_env *env, struct md_object *obj,
287 struct lustre_handle *lh,
288 struct ldlm_enqueue_info *einfo,
293 * Operations implemented for each directory object.
295 struct md_dir_operations {
296 int (*mdo_is_subdir) (const struct lu_env *env, struct md_object *obj,
297 const struct lu_fid *fid, struct lu_fid *sfid);
299 int (*mdo_lookup)(const struct lu_env *env, struct md_object *obj,
300 const struct lu_name *lname, struct lu_fid *fid,
301 struct md_op_spec *spec);
303 mdl_mode_t (*mdo_lock_mode)(const struct lu_env *env,
304 struct md_object *obj,
307 int (*mdo_create)(const struct lu_env *env, struct md_object *pobj,
308 const struct lu_name *lname, struct md_object *child,
309 struct md_op_spec *spec,
312 /** This method is used for creating data object for this meta object*/
313 int (*mdo_create_data)(const struct lu_env *env, struct md_object *p,
315 const struct md_op_spec *spec,
318 int (*mdo_rename)(const struct lu_env *env, struct md_object *spobj,
319 struct md_object *tpobj, const struct lu_fid *lf,
320 const struct lu_name *lsname, struct md_object *tobj,
321 const struct lu_name *ltname, struct md_attr *ma);
323 int (*mdo_link)(const struct lu_env *env, struct md_object *tgt_obj,
324 struct md_object *src_obj, const struct lu_name *lname,
327 int (*mdo_unlink)(const struct lu_env *env, struct md_object *pobj,
328 struct md_object *cobj, const struct lu_name *lname,
329 struct md_attr *ma, int no_name);
331 /** This method is used to compare a requested layout to an existing
332 * layout (struct lov_mds_md_v1/3 vs struct lov_mds_md_v1/3) */
333 int (*mdo_lum_lmm_cmp)(const struct lu_env *env,
334 struct md_object *cobj,
335 const struct md_op_spec *spec,
338 /** partial ops for cross-ref case */
339 int (*mdo_name_insert)(const struct lu_env *env,
340 struct md_object *obj,
341 const struct lu_name *lname,
342 const struct lu_fid *fid,
343 const struct md_attr *ma);
345 int (*mdo_name_remove)(const struct lu_env *env,
346 struct md_object *obj,
347 const struct lu_name *lname,
348 const struct md_attr *ma);
350 int (*mdo_rename_tgt)(const struct lu_env *env, struct md_object *pobj,
351 struct md_object *tobj, const struct lu_fid *fid,
352 const struct lu_name *lname, struct md_attr *ma);
355 struct md_device_operations {
356 /** meta-data device related handlers. */
357 int (*mdo_root_get)(const struct lu_env *env, struct md_device *m,
360 int (*mdo_maxsize_get)(const struct lu_env *env, struct md_device *m,
361 int *md_size, int *cookie_size);
363 int (*mdo_statfs)(const struct lu_env *env, struct md_device *m,
364 struct obd_statfs *sfs);
366 int (*mdo_init_capa_ctxt)(const struct lu_env *env, struct md_device *m,
367 int mode, unsigned long timeout, __u32 alg,
368 struct lustre_capa_key *keys);
370 int (*mdo_update_capa_key)(const struct lu_env *env,
372 struct lustre_capa_key *key);
374 int (*mdo_llog_ctxt_get)(const struct lu_env *env,
375 struct md_device *m, int idx, void **h);
377 int (*mdo_iocontrol)(const struct lu_env *env, struct md_device *m,
378 unsigned int cmd, int len, void *data);
381 enum md_upcall_event {
382 /** Sync the md layer*/
383 MD_LOV_SYNC = (1 << 0),
384 /** Just for split, no need trans, for replay */
385 MD_NO_TRANS = (1 << 1),
386 MD_LOV_CONFIG = (1 << 2),
387 /** Trigger quota recovery */
388 MD_LOV_QUOTA = (1 << 3)
392 /** this lock protects upcall using against its removal
393 * read lock is for usage the upcall, write - for init/fini */
394 struct rw_semaphore mu_upcall_sem;
395 /** device to call, upper layer normally */
396 struct md_device *mu_upcall_dev;
397 /** upcall function */
398 int (*mu_upcall)(const struct lu_env *env, struct md_device *md,
399 enum md_upcall_event ev, void *data);
403 struct lu_device md_lu_dev;
404 const struct md_device_operations *md_ops;
405 struct md_upcall md_upcall;
408 static inline void md_upcall_init(struct md_device *m, void *upcl)
410 init_rwsem(&m->md_upcall.mu_upcall_sem);
411 m->md_upcall.mu_upcall_dev = NULL;
412 m->md_upcall.mu_upcall = upcl;
415 static inline void md_upcall_dev_set(struct md_device *m, struct md_device *up)
417 down_write(&m->md_upcall.mu_upcall_sem);
418 m->md_upcall.mu_upcall_dev = up;
419 up_write(&m->md_upcall.mu_upcall_sem);
422 static inline void md_upcall_fini(struct md_device *m)
424 down_write(&m->md_upcall.mu_upcall_sem);
425 m->md_upcall.mu_upcall_dev = NULL;
426 m->md_upcall.mu_upcall = NULL;
427 up_write(&m->md_upcall.mu_upcall_sem);
430 static inline int md_do_upcall(const struct lu_env *env, struct md_device *m,
431 enum md_upcall_event ev, void *data)
434 down_read(&m->md_upcall.mu_upcall_sem);
435 if (m->md_upcall.mu_upcall_dev != NULL &&
436 m->md_upcall.mu_upcall_dev->md_upcall.mu_upcall != NULL) {
437 rc = m->md_upcall.mu_upcall_dev->md_upcall.mu_upcall(env,
438 m->md_upcall.mu_upcall_dev,
441 up_read(&m->md_upcall.mu_upcall_sem);
446 struct lu_object mo_lu;
447 const struct md_object_operations *mo_ops;
448 const struct md_dir_operations *mo_dir_ops;
454 struct seq_server_site {
455 struct lu_site *ss_lu;
457 * mds number of this site.
461 * Fid location database
463 struct lu_server_fld *ss_server_fld;
464 struct lu_client_fld *ss_client_fld;
469 struct lu_server_seq *ss_server_seq;
472 * Controller Seq Manager
474 struct lu_server_seq *ss_control_seq;
475 struct obd_export *ss_control_exp;
480 struct lu_client_seq *ss_client_seq;
483 static inline int lu_device_is_md(const struct lu_device *d)
485 return ergo(d != NULL, d->ld_type->ldt_tags & LU_DEVICE_MD);
488 static inline struct md_device *lu2md_dev(const struct lu_device *d)
490 LASSERT(IS_ERR(d) || lu_device_is_md(d));
491 return container_of0(d, struct md_device, md_lu_dev);
494 static inline struct lu_device *md2lu_dev(struct md_device *d)
496 return &d->md_lu_dev;
499 static inline struct md_object *lu2md(const struct lu_object *o)
501 LASSERT(o == NULL || IS_ERR(o) || lu_device_is_md(o->lo_dev));
502 return container_of0(o, struct md_object, mo_lu);
505 static inline struct md_object *md_object_next(const struct md_object *obj)
507 return (obj ? lu2md(lu_object_next(&obj->mo_lu)) : NULL);
510 static inline struct md_device *md_obj2dev(const struct md_object *o)
512 LASSERT(o == NULL || IS_ERR(o) || lu_device_is_md(o->mo_lu.lo_dev));
513 return container_of0(o->mo_lu.lo_dev, struct md_device, md_lu_dev);
516 static inline struct seq_server_site *lu_site2seq(const struct lu_site *s)
518 return s->ld_seq_site;
521 static inline int md_device_init(struct md_device *md, struct lu_device_type *t)
523 return lu_device_init(&md->md_lu_dev, t);
526 static inline void md_device_fini(struct md_device *md)
528 lu_device_fini(&md->md_lu_dev);
531 static inline struct md_object *md_object_find_slice(const struct lu_env *env,
532 struct md_device *md,
533 const struct lu_fid *f)
535 return lu2md(lu_object_find_slice(env, md2lu_dev(md), f, NULL));
540 static inline int mo_permission(const struct lu_env *env,
546 LASSERT(c->mo_ops->moo_permission);
547 return c->mo_ops->moo_permission(env, p, c, at, mask);
550 static inline int mo_attr_get(const struct lu_env *env,
554 LASSERT(m->mo_ops->moo_attr_get);
555 return m->mo_ops->moo_attr_get(env, m, at);
558 static inline int mo_readlink(const struct lu_env *env,
562 LASSERT(m->mo_ops->moo_readlink);
563 return m->mo_ops->moo_readlink(env, m, buf);
566 static inline int mo_changelog(const struct lu_env *env,
567 enum changelog_rec_type type,
568 int flags, struct md_object *m)
570 LASSERT(m->mo_ops->moo_changelog);
571 return m->mo_ops->moo_changelog(env, type, flags, m);
574 static inline int mo_attr_set(const struct lu_env *env,
576 const struct md_attr *at)
578 LASSERT(m->mo_ops->moo_attr_set);
579 return m->mo_ops->moo_attr_set(env, m, at);
582 static inline int mo_xattr_get(const struct lu_env *env,
587 LASSERT(m->mo_ops->moo_xattr_get);
588 return m->mo_ops->moo_xattr_get(env, m, buf, name);
591 static inline int mo_xattr_del(const struct lu_env *env,
595 LASSERT(m->mo_ops->moo_xattr_del);
596 return m->mo_ops->moo_xattr_del(env, m, name);
599 static inline int mo_xattr_set(const struct lu_env *env,
601 const struct lu_buf *buf,
605 LASSERT(m->mo_ops->moo_xattr_set);
606 return m->mo_ops->moo_xattr_set(env, m, buf, name, flags);
609 static inline int mo_xattr_list(const struct lu_env *env,
613 LASSERT(m->mo_ops->moo_xattr_list);
614 return m->mo_ops->moo_xattr_list(env, m, buf);
617 static inline int mo_swap_layouts(const struct lu_env *env,
618 struct md_object *o1,
619 struct md_object *o2, __u64 flags)
621 LASSERT(o1->mo_ops->moo_swap_layouts);
622 LASSERT(o2->mo_ops->moo_swap_layouts);
623 if (o1->mo_ops->moo_swap_layouts != o2->mo_ops->moo_swap_layouts)
625 return o1->mo_ops->moo_swap_layouts(env, o1, o2, flags);
628 static inline int mo_open(const struct lu_env *env,
632 LASSERT(m->mo_ops->moo_open);
633 return m->mo_ops->moo_open(env, m, flags);
636 static inline int mo_close(const struct lu_env *env,
641 LASSERT(m->mo_ops->moo_close);
642 return m->mo_ops->moo_close(env, m, ma, mode);
645 static inline int mo_readpage(const struct lu_env *env,
647 const struct lu_rdpg *rdpg)
649 LASSERT(m->mo_ops->moo_readpage);
650 return m->mo_ops->moo_readpage(env, m, rdpg);
653 static inline int mo_object_create(const struct lu_env *env,
655 const struct md_op_spec *spc,
658 LASSERT(m->mo_ops->moo_object_create);
659 return m->mo_ops->moo_object_create(env, m, spc, at);
662 static inline int mo_ref_add(const struct lu_env *env,
664 const struct md_attr *ma)
666 LASSERT(m->mo_ops->moo_ref_add);
667 return m->mo_ops->moo_ref_add(env, m, ma);
670 static inline int mo_ref_del(const struct lu_env *env,
674 LASSERT(m->mo_ops->moo_ref_del);
675 return m->mo_ops->moo_ref_del(env, m, ma);
678 static inline int mo_capa_get(const struct lu_env *env,
680 struct lustre_capa *c,
683 LASSERT(m->mo_ops->moo_capa_get);
684 return m->mo_ops->moo_capa_get(env, m, c, renewal);
687 static inline int mo_object_sync(const struct lu_env *env, struct md_object *m)
689 LASSERT(m->mo_ops->moo_object_sync);
690 return m->mo_ops->moo_object_sync(env, m);
693 static inline int mo_file_lock(const struct lu_env *env, struct md_object *m,
694 struct lov_mds_md *lmm,
695 struct ldlm_extent *extent,
696 struct lustre_handle *lockh)
698 LASSERT(m->mo_ops->moo_file_lock);
699 return m->mo_ops->moo_file_lock(env, m, lmm, extent, lockh);
702 static inline int mo_file_unlock(const struct lu_env *env, struct md_object *m,
703 struct lov_mds_md *lmm,
704 struct lustre_handle *lockh)
706 LASSERT(m->mo_ops->moo_file_unlock);
707 return m->mo_ops->moo_file_unlock(env, m, lmm, lockh);
710 static inline int mo_object_lock(const struct lu_env *env,
712 struct lustre_handle *lh,
713 struct ldlm_enqueue_info *einfo,
716 LASSERT(m->mo_ops->moo_object_lock);
717 return m->mo_ops->moo_object_lock(env, m, lh, einfo, policy);
720 static inline int mdo_lookup(const struct lu_env *env,
722 const struct lu_name *lname,
724 struct md_op_spec *spec)
726 LASSERT(p->mo_dir_ops->mdo_lookup);
727 return p->mo_dir_ops->mdo_lookup(env, p, lname, f, spec);
730 static inline mdl_mode_t mdo_lock_mode(const struct lu_env *env,
731 struct md_object *mo,
734 if (mo->mo_dir_ops->mdo_lock_mode == NULL)
736 return mo->mo_dir_ops->mdo_lock_mode(env, mo, lm);
739 static inline int mdo_create(const struct lu_env *env,
741 const struct lu_name *lchild_name,
743 struct md_op_spec *spc,
746 LASSERT(p->mo_dir_ops->mdo_create);
747 return p->mo_dir_ops->mdo_create(env, p, lchild_name, c, spc, at);
750 static inline int mdo_create_data(const struct lu_env *env,
753 const struct md_op_spec *spec,
756 LASSERT(c->mo_dir_ops->mdo_create_data);
757 return c->mo_dir_ops->mdo_create_data(env, p, c, spec, ma);
760 static inline int mdo_rename(const struct lu_env *env,
761 struct md_object *sp,
762 struct md_object *tp,
763 const struct lu_fid *lf,
764 const struct lu_name *lsname,
766 const struct lu_name *ltname,
769 LASSERT(tp->mo_dir_ops->mdo_rename);
770 return tp->mo_dir_ops->mdo_rename(env, sp, tp, lf, lsname, t, ltname,
774 static inline int mdo_is_subdir(const struct lu_env *env,
775 struct md_object *mo,
776 const struct lu_fid *fid,
779 LASSERT(mo->mo_dir_ops->mdo_is_subdir);
780 return mo->mo_dir_ops->mdo_is_subdir(env, mo, fid, sfid);
783 static inline int mdo_link(const struct lu_env *env,
786 const struct lu_name *lname,
789 LASSERT(s->mo_dir_ops->mdo_link);
790 return s->mo_dir_ops->mdo_link(env, p, s, lname, ma);
793 static inline int mdo_unlink(const struct lu_env *env,
796 const struct lu_name *lname,
797 struct md_attr *ma, int no_name)
799 LASSERT(p->mo_dir_ops->mdo_unlink);
800 return p->mo_dir_ops->mdo_unlink(env, p, c, lname, ma, no_name);
803 static inline int mdo_lum_lmm_cmp(const struct lu_env *env,
805 const struct md_op_spec *spec,
808 LASSERT(c->mo_dir_ops->mdo_lum_lmm_cmp);
809 return c->mo_dir_ops->mdo_lum_lmm_cmp(env, c, spec, ma);
812 static inline int mdo_name_insert(const struct lu_env *env,
814 const struct lu_name *lname,
815 const struct lu_fid *f,
816 const struct md_attr *ma)
818 LASSERT(p->mo_dir_ops->mdo_name_insert);
819 return p->mo_dir_ops->mdo_name_insert(env, p, lname, f, ma);
822 static inline int mdo_name_remove(const struct lu_env *env,
824 const struct lu_name *lname,
825 const struct md_attr *ma)
827 LASSERT(p->mo_dir_ops->mdo_name_remove);
828 return p->mo_dir_ops->mdo_name_remove(env, p, lname, ma);
831 static inline int mdo_rename_tgt(const struct lu_env *env,
834 const struct lu_fid *lf,
835 const struct lu_name *lname,
839 LASSERT(t->mo_dir_ops->mdo_rename_tgt);
840 return t->mo_dir_ops->mdo_rename_tgt(env, p, t, lf, lname, ma);
842 LASSERT(p->mo_dir_ops->mdo_rename_tgt);
843 return p->mo_dir_ops->mdo_rename_tgt(env, p, t, lf, lname, ma);
848 * Used in MDD/OUT layer for object lock rule
850 enum mdd_object_role {
860 * Structure to hold object information. This is used to create object
861 * \pre llod_dir exist
863 struct lu_local_obj_desc {
864 const char *llod_dir;
865 const char *llod_name;
868 const struct dt_index_features *llod_feat;
869 cfs_list_t llod_linkage;
872 struct md_object *llo_store_resolve(const struct lu_env *env,
873 struct md_device *md,
874 struct dt_device *dt,
878 struct md_object *llo_store_open(const struct lu_env *env,
879 struct md_device *md,
880 struct dt_device *dt,
885 struct md_object *llo_store_create_index(const struct lu_env *env,
886 struct md_device *md,
887 struct dt_device *dt,
890 const struct lu_fid *fid,
891 const struct dt_index_features *feat);
893 struct md_object *llo_store_create(const struct lu_env *env,
894 struct md_device *md,
895 struct dt_device *dt,
898 const struct lu_fid *fid);
900 void llo_local_obj_register(struct lu_local_obj_desc *);
901 void llo_local_obj_unregister(struct lu_local_obj_desc *);
903 int llo_local_objects_setup(const struct lu_env *env,
904 struct md_device * md,
905 struct dt_device * dt);
907 int lustre_buf2som(void *buf, int rc, struct md_som_data *msd);
908 int lustre_buf2hsm(void *buf, int rc, struct md_hsm *mh);
909 void lustre_hsm2buf(void *buf, struct md_hsm *mh);
911 #define md_cap_t(x) (x)
913 #define MD_CAP_TO_MASK(x) (1 << (x))
915 #define md_cap_raised(c, flag) (md_cap_t(c) & MD_CAP_TO_MASK(flag))
917 /* capable() is copied from linux kernel! */
918 static inline int md_capable(struct lu_ucred *uc, cfs_cap_t cap)
920 if (md_cap_raised(uc->uc_cap, cap))
926 #endif /* _LINUX_MD_OBJECT_H */