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/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 struct md_device_operations;
67 struct obd_export *mq_exp;
70 struct md_quota *md_quota(const struct lu_env *env);
72 /** metadata attributes */
79 MA_ACL_DEF = (1 << 5),
80 MA_LOV_DEF = (1 << 6),
81 MA_LAY_GEN = (1 << 7),
85 MA_LMV_DEF = (1 << 11)
102 MDT_REG_LOCK = (1 << 0),
103 MDT_PDO_LOCK = (1 << 1)
106 /* memory structure for hsm attributes
107 * for fields description see the on disk structure hsm_attrs
108 * which is defined in lustre_idl.h
117 #define IOEPOCH_INVAL 0
119 /* memory structure for som attributes
120 * for fields description see the on disk structure som_attrs
121 * which is defined in lustre_idl.h
136 struct lu_attr ma_attr;
137 struct lu_fid ma_pfid;
138 struct md_hsm ma_hsm;
139 struct lov_mds_md *ma_lmm;
140 union lmv_mds_md *ma_lmv;
142 struct llog_cookie *ma_cookie;
143 struct lustre_capa *ma_capa;
144 struct md_som_data *ma_som;
152 /** Additional parameters for create */
155 /** symlink target */
156 const char *sp_symname;
157 /** parent FID for cross-ref mkdir */
158 const struct lu_fid *sp_pfid;
159 /** eadata for regular files */
161 /** lov objs exist already */
162 const struct lu_fid *fid;
168 /** Create flag from client: such as MDS_OPEN_CREAT, and others. */
171 /** don't create lov objects or llog cookie - this replay */
172 unsigned int no_create:1,
173 sp_cr_lookup:1, /* do lookup sanity check or not. */
174 sp_rm_entry:1; /* only remove name entry */
176 /** Current lock mode for parent dir where create is performing. */
177 mdl_mode_t sp_cr_mode;
179 /** to create directory */
180 const struct dt_index_features *sp_feat;
183 union ldlm_policy_data;
185 * Operations implemented for each md object (both directory and leaf).
187 struct md_object_operations {
188 int (*moo_permission)(const struct lu_env *env,
189 struct md_object *pobj, struct md_object *cobj,
190 struct md_attr *attr, int mask);
192 int (*moo_attr_get)(const struct lu_env *env, struct md_object *obj,
193 struct md_attr *attr);
195 int (*moo_attr_set)(const struct lu_env *env, struct md_object *obj,
196 const struct md_attr *attr);
198 int (*moo_xattr_get)(const struct lu_env *env, struct md_object *obj,
199 struct lu_buf *buf, const char *name);
201 int (*moo_xattr_list)(const struct lu_env *env, struct md_object *obj,
204 int (*moo_xattr_set)(const struct lu_env *env, struct md_object *obj,
205 const struct lu_buf *buf, const char *name,
208 int (*moo_xattr_del)(const struct lu_env *env, struct md_object *obj,
211 /** This method is used to swap the layouts between 2 objects */
212 int (*moo_swap_layouts)(const struct lu_env *env,
213 struct md_object *obj1, struct md_object *obj2,
216 /** \retval number of bytes actually read upon success */
217 int (*moo_readpage)(const struct lu_env *env, struct md_object *obj,
218 const struct lu_rdpg *rdpg);
220 int (*moo_readlink)(const struct lu_env *env, struct md_object *obj,
222 int (*moo_changelog)(const struct lu_env *env,
223 enum changelog_rec_type type, int flags,
224 struct md_object *obj);
225 /** part of cross-ref operation */
226 int (*moo_object_create)(const struct lu_env *env,
227 struct md_object *obj,
228 const struct md_op_spec *spec,
231 int (*moo_ref_add)(const struct lu_env *env,
232 struct md_object *obj,
233 const struct md_attr *ma);
235 int (*moo_ref_del)(const struct lu_env *env,
236 struct md_object *obj,
239 int (*moo_open)(const struct lu_env *env,
240 struct md_object *obj, int flag);
242 int (*moo_close)(const struct lu_env *env, struct md_object *obj,
243 struct md_attr *ma, int mode);
245 int (*moo_capa_get)(const struct lu_env *, struct md_object *,
246 struct lustre_capa *, int renewal);
248 int (*moo_object_sync)(const struct lu_env *, struct md_object *);
250 int (*moo_file_lock)(const struct lu_env *env, struct md_object *obj,
251 struct lov_mds_md *lmm, struct ldlm_extent *extent,
252 struct lustre_handle *lockh);
253 int (*moo_file_unlock)(const struct lu_env *env, struct md_object *obj,
254 struct lov_mds_md *lmm,
255 struct lustre_handle *lockh);
256 int (*moo_object_lock)(const struct lu_env *env, struct md_object *obj,
257 struct lustre_handle *lh,
258 struct ldlm_enqueue_info *einfo,
259 union ldlm_policy_data *policy);
260 int (*moo_object_unlock)(const struct lu_env *env,
261 struct md_object *obj,
262 struct ldlm_enqueue_info *einfo,
263 union ldlm_policy_data *policy);
267 * Operations implemented for each directory object.
269 struct md_dir_operations {
270 int (*mdo_is_subdir) (const struct lu_env *env, struct md_object *obj,
271 const struct lu_fid *fid, struct lu_fid *sfid);
273 int (*mdo_lookup)(const struct lu_env *env, struct md_object *obj,
274 const struct lu_name *lname, struct lu_fid *fid,
275 struct md_op_spec *spec);
277 mdl_mode_t (*mdo_lock_mode)(const struct lu_env *env,
278 struct md_object *obj,
281 int (*mdo_create)(const struct lu_env *env, struct md_object *pobj,
282 const struct lu_name *lname, struct md_object *child,
283 struct md_op_spec *spec,
286 /** This method is used for creating data object for this meta object*/
287 int (*mdo_create_data)(const struct lu_env *env, struct md_object *p,
289 const struct md_op_spec *spec,
292 int (*mdo_rename)(const struct lu_env *env, struct md_object *spobj,
293 struct md_object *tpobj, const struct lu_fid *lf,
294 const struct lu_name *lsname, struct md_object *tobj,
295 const struct lu_name *ltname, struct md_attr *ma);
297 int (*mdo_link)(const struct lu_env *env, struct md_object *tgt_obj,
298 struct md_object *src_obj, const struct lu_name *lname,
301 int (*mdo_unlink)(const struct lu_env *env, struct md_object *pobj,
302 struct md_object *cobj, const struct lu_name *lname,
303 struct md_attr *ma, int no_name);
305 int (*mdo_migrate)(const struct lu_env *env, struct md_object *pobj,
306 const struct lu_fid *lf, const struct lu_name *lname,
307 struct md_object *tobj, struct md_attr *ma);
308 /** This method is used to compare a requested layout to an existing
309 * layout (struct lov_mds_md_v1/3 vs struct lov_mds_md_v1/3) */
310 int (*mdo_lum_lmm_cmp)(const struct lu_env *env,
311 struct md_object *cobj,
312 const struct md_op_spec *spec,
315 /** partial ops for cross-ref case */
316 int (*mdo_name_insert)(const struct lu_env *env,
317 struct md_object *obj,
318 const struct lu_name *lname,
319 const struct lu_fid *fid,
320 const struct md_attr *ma);
322 int (*mdo_name_remove)(const struct lu_env *env,
323 struct md_object *obj,
324 const struct lu_name *lname,
325 const struct md_attr *ma);
327 int (*mdo_rename_tgt)(const struct lu_env *env, struct md_object *pobj,
328 struct md_object *tobj, const struct lu_fid *fid,
329 const struct lu_name *lname, struct md_attr *ma);
332 struct md_device_operations {
333 /** meta-data device related handlers. */
334 int (*mdo_root_get)(const struct lu_env *env, struct md_device *m,
337 int (*mdo_maxeasize_get)(const struct lu_env *env, struct md_device *m,
340 int (*mdo_statfs)(const struct lu_env *env, struct md_device *m,
341 struct obd_statfs *sfs);
343 int (*mdo_init_capa_ctxt)(const struct lu_env *env, struct md_device *m,
344 int mode, unsigned long timeout, __u32 alg,
345 struct lustre_capa_key *keys);
347 int (*mdo_update_capa_key)(const struct lu_env *env,
349 struct lustre_capa_key *key);
351 int (*mdo_llog_ctxt_get)(const struct lu_env *env,
352 struct md_device *m, int idx, void **h);
354 int (*mdo_iocontrol)(const struct lu_env *env, struct md_device *m,
355 unsigned int cmd, int len, void *data);
358 enum md_upcall_event {
359 /** Sync the md layer*/
360 MD_LOV_SYNC = (1 << 0),
361 /** Just for split, no need trans, for replay */
362 MD_NO_TRANS = (1 << 1),
363 MD_LOV_CONFIG = (1 << 2),
364 /** Trigger quota recovery */
365 MD_LOV_QUOTA = (1 << 3)
369 /** this lock protects upcall using against its removal
370 * read lock is for usage the upcall, write - for init/fini */
371 struct rw_semaphore mu_upcall_sem;
372 /** device to call, upper layer normally */
373 struct md_device *mu_upcall_dev;
374 /** upcall function */
375 int (*mu_upcall)(const struct lu_env *env, struct md_device *md,
376 enum md_upcall_event ev, void *data);
380 struct lu_device md_lu_dev;
381 const struct md_device_operations *md_ops;
382 struct md_upcall md_upcall;
385 static inline void md_upcall_init(struct md_device *m, void *upcl)
387 init_rwsem(&m->md_upcall.mu_upcall_sem);
388 m->md_upcall.mu_upcall_dev = NULL;
389 m->md_upcall.mu_upcall = upcl;
392 static inline void md_upcall_dev_set(struct md_device *m, struct md_device *up)
394 down_write(&m->md_upcall.mu_upcall_sem);
395 m->md_upcall.mu_upcall_dev = up;
396 up_write(&m->md_upcall.mu_upcall_sem);
399 static inline void md_upcall_fini(struct md_device *m)
401 down_write(&m->md_upcall.mu_upcall_sem);
402 m->md_upcall.mu_upcall_dev = NULL;
403 m->md_upcall.mu_upcall = NULL;
404 up_write(&m->md_upcall.mu_upcall_sem);
407 static inline int md_do_upcall(const struct lu_env *env, struct md_device *m,
408 enum md_upcall_event ev, void *data)
411 down_read(&m->md_upcall.mu_upcall_sem);
412 if (m->md_upcall.mu_upcall_dev != NULL &&
413 m->md_upcall.mu_upcall_dev->md_upcall.mu_upcall != NULL) {
414 rc = m->md_upcall.mu_upcall_dev->md_upcall.mu_upcall(env,
415 m->md_upcall.mu_upcall_dev,
418 up_read(&m->md_upcall.mu_upcall_sem);
423 struct lu_object mo_lu;
424 const struct md_object_operations *mo_ops;
425 const struct md_dir_operations *mo_dir_ops;
431 struct seq_server_site {
432 struct lu_site *ss_lu;
434 * mds number of this site.
438 * Fid location database
440 struct lu_server_fld *ss_server_fld;
441 struct lu_client_fld *ss_client_fld;
446 struct lu_server_seq *ss_server_seq;
449 * Controller Seq Manager
451 struct lu_server_seq *ss_control_seq;
452 struct obd_export *ss_control_exp;
457 struct lu_client_seq *ss_client_seq;
460 static inline struct md_device *lu2md_dev(const struct lu_device *d)
462 LASSERT(IS_ERR(d) || lu_device_is_md(d));
463 return container_of0(d, struct md_device, md_lu_dev);
466 static inline struct lu_device *md2lu_dev(struct md_device *d)
468 return &d->md_lu_dev;
471 static inline struct md_object *lu2md(const struct lu_object *o)
473 LASSERT(o == NULL || IS_ERR(o) || lu_device_is_md(o->lo_dev));
474 return container_of0(o, struct md_object, mo_lu);
477 static inline struct md_object *md_object_next(const struct md_object *obj)
479 return (obj ? lu2md(lu_object_next(&obj->mo_lu)) : NULL);
482 static inline struct md_device *md_obj2dev(const struct md_object *o)
484 LASSERT(o == NULL || IS_ERR(o) || lu_device_is_md(o->mo_lu.lo_dev));
485 return container_of0(o->mo_lu.lo_dev, struct md_device, md_lu_dev);
488 static inline int md_device_init(struct md_device *md, struct lu_device_type *t)
490 return lu_device_init(&md->md_lu_dev, t);
493 static inline void md_device_fini(struct md_device *md)
495 lu_device_fini(&md->md_lu_dev);
498 static inline struct md_object *md_object_find_slice(const struct lu_env *env,
499 struct md_device *md,
500 const struct lu_fid *f)
502 return lu2md(lu_object_find_slice(env, md2lu_dev(md), f, NULL));
507 static inline int mo_permission(const struct lu_env *env,
513 LASSERT(c->mo_ops->moo_permission);
514 return c->mo_ops->moo_permission(env, p, c, at, mask);
517 static inline int mo_attr_get(const struct lu_env *env,
521 LASSERT(m->mo_ops->moo_attr_get);
522 return m->mo_ops->moo_attr_get(env, m, at);
525 static inline int mo_readlink(const struct lu_env *env,
529 LASSERT(m->mo_ops->moo_readlink);
530 return m->mo_ops->moo_readlink(env, m, buf);
533 static inline int mo_changelog(const struct lu_env *env,
534 enum changelog_rec_type type,
535 int flags, struct md_object *m)
537 LASSERT(m->mo_ops->moo_changelog);
538 return m->mo_ops->moo_changelog(env, type, flags, m);
541 static inline int mo_attr_set(const struct lu_env *env,
543 const struct md_attr *at)
545 LASSERT(m->mo_ops->moo_attr_set);
546 return m->mo_ops->moo_attr_set(env, m, at);
549 static inline int mo_xattr_get(const struct lu_env *env,
554 LASSERT(m->mo_ops->moo_xattr_get);
555 return m->mo_ops->moo_xattr_get(env, m, buf, name);
558 static inline int mo_xattr_del(const struct lu_env *env,
562 LASSERT(m->mo_ops->moo_xattr_del);
563 return m->mo_ops->moo_xattr_del(env, m, name);
566 static inline int mo_xattr_set(const struct lu_env *env,
568 const struct lu_buf *buf,
572 LASSERT(m->mo_ops->moo_xattr_set);
573 return m->mo_ops->moo_xattr_set(env, m, buf, name, flags);
576 static inline int mo_xattr_list(const struct lu_env *env,
580 LASSERT(m->mo_ops->moo_xattr_list);
581 return m->mo_ops->moo_xattr_list(env, m, buf);
584 static inline int mo_swap_layouts(const struct lu_env *env,
585 struct md_object *o1,
586 struct md_object *o2, __u64 flags)
588 LASSERT(o1->mo_ops->moo_swap_layouts);
589 LASSERT(o2->mo_ops->moo_swap_layouts);
590 if (o1->mo_ops->moo_swap_layouts != o2->mo_ops->moo_swap_layouts)
592 return o1->mo_ops->moo_swap_layouts(env, o1, o2, flags);
595 static inline int mo_open(const struct lu_env *env,
599 LASSERT(m->mo_ops->moo_open);
600 return m->mo_ops->moo_open(env, m, flags);
603 static inline int mo_close(const struct lu_env *env,
608 LASSERT(m->mo_ops->moo_close);
609 return m->mo_ops->moo_close(env, m, ma, mode);
612 static inline int mo_readpage(const struct lu_env *env,
614 const struct lu_rdpg *rdpg)
616 LASSERT(m->mo_ops->moo_readpage);
617 return m->mo_ops->moo_readpage(env, m, rdpg);
620 static inline int mo_object_create(const struct lu_env *env,
622 const struct md_op_spec *spc,
625 LASSERT(m->mo_ops->moo_object_create);
626 return m->mo_ops->moo_object_create(env, m, spc, at);
629 static inline int mo_ref_add(const struct lu_env *env,
631 const struct md_attr *ma)
633 LASSERT(m->mo_ops->moo_ref_add);
634 return m->mo_ops->moo_ref_add(env, m, ma);
637 static inline int mo_ref_del(const struct lu_env *env,
641 LASSERT(m->mo_ops->moo_ref_del);
642 return m->mo_ops->moo_ref_del(env, m, ma);
645 static inline int mo_capa_get(const struct lu_env *env,
647 struct lustre_capa *c,
650 LASSERT(m->mo_ops->moo_capa_get);
651 return m->mo_ops->moo_capa_get(env, m, c, renewal);
654 static inline int mo_object_sync(const struct lu_env *env, struct md_object *m)
656 LASSERT(m->mo_ops->moo_object_sync);
657 return m->mo_ops->moo_object_sync(env, m);
660 static inline int mo_file_lock(const struct lu_env *env, struct md_object *m,
661 struct lov_mds_md *lmm,
662 struct ldlm_extent *extent,
663 struct lustre_handle *lockh)
665 LASSERT(m->mo_ops->moo_file_lock);
666 return m->mo_ops->moo_file_lock(env, m, lmm, extent, lockh);
669 static inline int mo_file_unlock(const struct lu_env *env, struct md_object *m,
670 struct lov_mds_md *lmm,
671 struct lustre_handle *lockh)
673 LASSERT(m->mo_ops->moo_file_unlock);
674 return m->mo_ops->moo_file_unlock(env, m, lmm, lockh);
677 static inline int mo_object_lock(const struct lu_env *env,
679 struct lustre_handle *lh,
680 struct ldlm_enqueue_info *einfo,
681 union ldlm_policy_data *policy)
683 LASSERT(m->mo_ops->moo_object_lock);
684 return m->mo_ops->moo_object_lock(env, m, lh, einfo, policy);
687 static inline int mo_object_unlock(const struct lu_env *env,
689 struct ldlm_enqueue_info *einfo,
690 union ldlm_policy_data *policy)
692 LASSERT(m->mo_ops->moo_object_unlock);
693 return m->mo_ops->moo_object_unlock(env, m, einfo, policy);
696 static inline int mdo_lookup(const struct lu_env *env,
698 const struct lu_name *lname,
700 struct md_op_spec *spec)
702 LASSERT(p->mo_dir_ops->mdo_lookup);
703 return p->mo_dir_ops->mdo_lookup(env, p, lname, f, spec);
706 static inline mdl_mode_t mdo_lock_mode(const struct lu_env *env,
707 struct md_object *mo,
710 if (mo->mo_dir_ops->mdo_lock_mode == NULL)
712 return mo->mo_dir_ops->mdo_lock_mode(env, mo, lm);
715 static inline int mdo_create(const struct lu_env *env,
717 const struct lu_name *lchild_name,
719 struct md_op_spec *spc,
722 LASSERT(p->mo_dir_ops->mdo_create);
723 return p->mo_dir_ops->mdo_create(env, p, lchild_name, c, spc, at);
726 static inline int mdo_create_data(const struct lu_env *env,
729 const struct md_op_spec *spec,
732 LASSERT(c->mo_dir_ops->mdo_create_data);
733 return c->mo_dir_ops->mdo_create_data(env, p, c, spec, ma);
736 static inline int mdo_rename(const struct lu_env *env,
737 struct md_object *sp,
738 struct md_object *tp,
739 const struct lu_fid *lf,
740 const struct lu_name *lsname,
742 const struct lu_name *ltname,
745 LASSERT(tp->mo_dir_ops->mdo_rename);
746 return tp->mo_dir_ops->mdo_rename(env, sp, tp, lf, lsname, t, ltname,
750 static inline int mdo_migrate(const struct lu_env *env,
751 struct md_object *pobj,
752 const struct lu_fid *lf,
753 const struct lu_name *lname,
754 struct md_object *tobj,
757 LASSERT(pobj->mo_dir_ops->mdo_migrate);
758 return pobj->mo_dir_ops->mdo_migrate(env, pobj, lf, lname, tobj, ma);
761 static inline int mdo_is_subdir(const struct lu_env *env,
762 struct md_object *mo,
763 const struct lu_fid *fid,
766 LASSERT(mo->mo_dir_ops->mdo_is_subdir);
767 return mo->mo_dir_ops->mdo_is_subdir(env, mo, fid, sfid);
770 static inline int mdo_link(const struct lu_env *env,
773 const struct lu_name *lname,
776 LASSERT(s->mo_dir_ops->mdo_link);
777 return s->mo_dir_ops->mdo_link(env, p, s, lname, ma);
780 static inline int mdo_unlink(const struct lu_env *env,
783 const struct lu_name *lname,
784 struct md_attr *ma, int no_name)
786 LASSERT(p->mo_dir_ops->mdo_unlink);
787 return p->mo_dir_ops->mdo_unlink(env, p, c, lname, ma, no_name);
790 static inline int mdo_lum_lmm_cmp(const struct lu_env *env,
792 const struct md_op_spec *spec,
795 LASSERT(c->mo_dir_ops->mdo_lum_lmm_cmp);
796 return c->mo_dir_ops->mdo_lum_lmm_cmp(env, c, spec, ma);
799 static inline int mdo_name_insert(const struct lu_env *env,
801 const struct lu_name *lname,
802 const struct lu_fid *f,
803 const struct md_attr *ma)
805 LASSERT(p->mo_dir_ops->mdo_name_insert);
806 return p->mo_dir_ops->mdo_name_insert(env, p, lname, f, ma);
809 static inline int mdo_name_remove(const struct lu_env *env,
811 const struct lu_name *lname,
812 const struct md_attr *ma)
814 LASSERT(p->mo_dir_ops->mdo_name_remove);
815 return p->mo_dir_ops->mdo_name_remove(env, p, lname, ma);
818 static inline int mdo_rename_tgt(const struct lu_env *env,
821 const struct lu_fid *lf,
822 const struct lu_name *lname,
826 LASSERT(t->mo_dir_ops->mdo_rename_tgt);
827 return t->mo_dir_ops->mdo_rename_tgt(env, p, t, lf, lname, ma);
829 LASSERT(p->mo_dir_ops->mdo_rename_tgt);
830 return p->mo_dir_ops->mdo_rename_tgt(env, p, t, lf, lname, ma);
835 * Used in MDD/OUT layer for object lock rule
837 enum mdd_object_role {
847 * Structure to hold object information. This is used to create object
848 * \pre llod_dir exist
850 struct lu_local_obj_desc {
851 const char *llod_dir;
852 const char *llod_name;
855 const struct dt_index_features *llod_feat;
856 cfs_list_t llod_linkage;
859 int lustre_buf2som(void *buf, int rc, struct md_som_data *msd);
860 int lustre_buf2hsm(void *buf, int rc, struct md_hsm *mh);
861 void lustre_hsm2buf(void *buf, const struct md_hsm *mh);
880 __u32 uc_suppgids[2];
883 struct group_info *uc_ginfo;
884 struct md_identity *uc_identity;
887 struct lu_ucred *lu_ucred(const struct lu_env *env);
889 struct lu_ucred *lu_ucred_check(const struct lu_env *env);
891 struct lu_ucred *lu_ucred_assert(const struct lu_env *env);
893 int lu_ucred_global_init(void);
895 void lu_ucred_global_fini(void);
897 #define md_cap_t(x) (x)
899 #define MD_CAP_TO_MASK(x) (1 << (x))
901 #define md_cap_raised(c, flag) (md_cap_t(c) & MD_CAP_TO_MASK(flag))
903 /* capable() is copied from linux kernel! */
904 static inline int md_capable(struct lu_ucred *uc, cfs_cap_t cap)
906 if (md_cap_raised(uc->uc_cap, cap))
912 #endif /* _LINUX_MD_OBJECT_H */