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, Whamcloud, Inc.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/osd/osd_internal.h
38 * Shared definitions and declarations for osd module
40 * Author: Nikita Danilov <nikita@clusterfs.com>
43 #ifndef _OSD_INTERNAL_H
44 #define _OSD_INTERNAL_H
46 #if defined(__KERNEL__)
48 /* struct rw_semaphore */
49 #include <linux/rwsem.h>
51 #include <linux/dcache.h>
53 #include <linux/dirent.h>
55 #include <ldiskfs/ldiskfs.h>
56 #include <ldiskfs/ldiskfs_jbd2.h>
57 #ifdef HAVE_LDISKFS_JOURNAL_CALLBACK_ADD
58 # define journal_callback ldiskfs_journal_cb_entry
59 # define osd_journal_callback_set(handle, func, jcb) \
60 ldiskfs_journal_callback_add(handle, func, jcb)
62 # define osd_journal_callback_set(handle, func, jcb) \
63 jbd2_journal_callback_set(handle, func, jcb)
66 /* fsfilt_{get|put}_ops */
67 #include <lustre_fsfilt.h>
71 /* class_register_type(), class_unregister_type(), class_get_type() */
72 #include <obd_class.h>
73 #include <lustre_disk.h>
74 #include <dt_object.h>
78 #include "osd_scrub.h"
82 #define OSD_COUNTERS (0)
84 /* Lustre special inode::i_state to indicate OI scrub skip this inode. */
85 #define I_LUSTRE_NOSCRUB (1 << 31)
87 /** Enable thandle usage statistics */
88 #define OSD_THANDLE_STATS (0)
90 #ifdef HAVE_QUOTA_SUPPORT
94 cfs_kernel_cap_t oc_cap;
98 struct osd_directory {
99 struct iam_container od_container;
100 struct iam_descr od_descr;
104 * Object Index (oi) instance.
108 * underlying index object, where fid->id mapping in stored.
110 struct inode *oi_inode;
111 struct osd_directory oi_dir;
114 extern const int osd_dto_credits_noquota[];
117 struct dt_object oo_dt;
119 * Inode for file system object represented by this osd_object. This
120 * inode is pinned for the whole duration of lu_object life.
122 * Not modified concurrently (either setup early during object
123 * creation, or assigned by osd_object_create() under write lock).
125 struct inode *oo_inode;
127 * to protect index ops.
129 struct htree_lock_head *oo_hl_head;
130 cfs_rw_semaphore_t oo_ext_idx_sem;
131 cfs_rw_semaphore_t oo_sem;
132 struct osd_directory *oo_dir;
133 /** protects inode attributes. */
134 cfs_spinlock_t oo_guard;
136 * Following two members are used to indicate the presence of dot and
137 * dotdot in the given directory. This is required for interop mode
140 int oo_compat_dot_created;
141 int oo_compat_dotdot_created;
143 const struct lu_env *oo_owner;
144 #ifdef CONFIG_LOCKDEP
145 struct lockdep_map oo_dep_map;
149 #ifdef HAVE_LDISKFS_PDO
151 #define osd_ldiskfs_find_entry(dir, dentry, de, lock) \
152 ll_ldiskfs_find_entry(dir, dentry, de, lock)
153 #define osd_ldiskfs_add_entry(handle, child, cinode, hlock) \
154 ldiskfs_add_entry(handle, child, cinode, hlock)
156 #else /* HAVE_LDISKFS_PDO */
162 struct htree_lock_head {
166 #define ldiskfs_htree_lock(lock, head, inode, op) do { LBUG(); } while (0)
167 #define ldiskfs_htree_unlock(lock) do { LBUG(); } while (0)
169 static inline struct htree_lock_head *ldiskfs_htree_lock_head_alloc(int dep)
175 #define ldiskfs_htree_lock_head_free(lh) do { LBUG(); } while (0)
177 #define LDISKFS_DUMMY_HTREE_LOCK 0xbabecafe
179 static inline struct htree_lock *ldiskfs_htree_lock_alloc(void)
181 return (struct htree_lock *)LDISKFS_DUMMY_HTREE_LOCK;
184 static inline void ldiskfs_htree_lock_free(struct htree_lock *lk)
186 LASSERT((unsigned long)lk == LDISKFS_DUMMY_HTREE_LOCK);
189 #define HTREE_HBITS_DEF 0
191 #define osd_ldiskfs_find_entry(dir, dentry, de, lock) \
192 ll_ldiskfs_find_entry(dir, dentry, de)
193 #define osd_ldiskfs_add_entry(handle, child, cinode, lock) \
194 ldiskfs_add_entry(handle, child, cinode)
196 #endif /* HAVE_LDISKFS_PDO */
198 #define OSD_OTABLE_IT_CACHE_SIZE 128
199 #define OSD_OTABLE_IT_CACHE_MASK (~(OSD_OTABLE_IT_CACHE_SIZE - 1))
201 struct osd_inconsistent_item {
202 /* link into osd_scrub::os_inconsistent_items,
203 * protected by osd_scrub::os_lock. */
206 /* The right FID <=> ino#/gen mapping. */
207 struct osd_idmap_cache oii_cache;
209 unsigned int oii_insert:1; /* insert or update mapping. */
212 struct osd_otable_cache {
213 struct osd_idmap_cache ooc_cache[OSD_OTABLE_IT_CACHE_SIZE];
215 /* Index for next cache slot to be filled. */
216 int ooc_producer_idx;
218 /* Index for next cache slot to be returned by it::next(). */
219 int ooc_consumer_idx;
221 /* How many items in ooc_cache. */
222 int ooc_cached_items;
224 /* Position for up layer LFSCK iteration pre-loading. */
225 __u32 ooc_pos_preload;
228 struct osd_otable_it {
229 struct osd_device *ooi_dev;
230 struct osd_otable_cache ooi_cache;
232 /* For osd_otable_it_key. */
235 /* The following bits can be updated/checked w/o lock protection.
236 * If more bits will be introduced in the future and need lock to
237 * protect, please add comment. */
238 unsigned long ooi_used_outside:1, /* Some user out of OSD
239 * uses the iteration. */
240 ooi_all_cached:1, /* No more entries can be
241 * filled into cache. */
242 ooi_user_ready:1, /* The user out of OSD is
243 * ready to iterate. */
244 ooi_waiting:1; /* it::next is waiting. */
247 extern const int osd_dto_credits_noquota[];
254 struct dt_device od_dt_dev;
255 /* information about underlying file system */
256 struct lustre_mount_info *od_mount;
257 struct vfsmount *od_mnt;
259 struct osd_oi **od_oi_table;
260 /* total number of OI containers */
265 unsigned int od_fl_capa:1;
266 unsigned long od_capa_timeout;
268 struct lustre_capa_key *od_capa_keys;
269 cfs_hlist_head_t *od_capa_hash;
271 cfs_proc_dir_entry_t *od_proc_entry;
272 struct lprocfs_stats *od_stats;
274 * statfs optimization: we cache a bit.
276 cfs_time_t od_osfs_age;
277 struct obd_statfs od_statfs;
278 cfs_spinlock_t od_osfs_lock;
281 * The following flag indicates, if it is interop mode or not.
282 * It will be initialized, using mount param.
286 struct fsfilt_operations *od_fsops;
289 * mapping for legacy OST objids
291 struct osd_compat_objid *od_ost_map;
293 unsigned long long od_readcache_max_filesize;
295 int od_writethrough_cache;
297 struct brw_stats od_brw_stats;
298 cfs_atomic_t od_r_in_flight;
299 cfs_atomic_t od_w_in_flight;
301 cfs_mutex_t od_otable_mutex;
302 struct osd_otable_it *od_otable_it;
303 struct osd_scrub od_scrub;
306 #define OSD_TRACK_DECLARES
307 #ifdef OSD_TRACK_DECLARES
308 #define OSD_DECLARE_OP(oh, op) { \
309 LASSERT(oh->ot_handle == NULL); \
310 ((oh)->ot_declare_ ##op)++; }
311 #define OSD_EXEC_OP(handle,op) { \
312 struct osd_thandle *oh; \
313 oh = container_of0(handle, struct osd_thandle, ot_super);\
314 if (((oh)->ot_declare_ ##op) > 0) { \
315 ((oh)->ot_declare_ ##op)--; \
319 #define OSD_DECLARE_OP(oh, op)
320 #define OSD_EXEC_OP(oh, op)
323 /* There are at most 10 uid/gids are affected in a transaction, and
324 * that's rename case:
325 * - 2 for source parent uid & gid;
326 * - 2 for source child uid & gid ('..' entry update when the child
328 * - 2 for target parent uid & gid;
329 * - 2 for target child uid & gid (if the target child exists);
330 * - 2 for root uid & gid (last_rcvd, llog, etc);
332 * The 0 to (OSD_MAX_UGID_CNT - 1) bits of ot_id_type is for indicating
333 * the id type of each id in the ot_id_array.
335 #define OSD_MAX_UGID_CNT 10
338 struct thandle ot_super;
340 struct journal_callback ot_jcb;
341 cfs_list_t ot_dcb_list;
342 /* Link to the device, for debugging. */
343 struct lu_ref_link *ot_dev_link;
344 unsigned short ot_credits;
345 unsigned short ot_id_cnt;
346 unsigned short ot_id_type;
347 uid_t ot_id_array[OSD_MAX_UGID_CNT];
349 #ifdef OSD_TRACK_DECLARES
350 unsigned char ot_declare_attr_set;
351 unsigned char ot_declare_punch;
352 unsigned char ot_declare_xattr_set;
353 unsigned char ot_declare_create;
354 unsigned char ot_declare_destroy;
355 unsigned char ot_declare_ref_add;
356 unsigned char ot_declare_ref_del;
357 unsigned char ot_declare_write;
358 unsigned char ot_declare_insert;
359 unsigned char ot_declare_delete;
362 #if OSD_THANDLE_STATS
363 /** time when this handle was allocated */
364 cfs_time_t oth_alloced;
366 /** time when this thanle was started */
367 cfs_time_t oth_started;
372 * Basic transaction credit op
382 DTO_LOG_REC, /**< XXX temporary: dt layer knows nothing about llog. */
396 LPROC_OSD_READ_BYTES = 0,
397 LPROC_OSD_WRITE_BYTES = 1,
398 LPROC_OSD_GET_PAGE = 2,
399 LPROC_OSD_NO_PAGE = 3,
400 LPROC_OSD_CACHE_ACCESS = 4,
401 LPROC_OSD_CACHE_HIT = 5,
402 LPROC_OSD_CACHE_MISS = 6,
404 #if OSD_THANDLE_STATS
405 LPROC_OSD_THANDLE_STARTING,
406 LPROC_OSD_THANDLE_OPEN,
407 LPROC_OSD_THANDLE_CLOSING,
414 * Storage representation for fids.
416 * Variable size, first byte contains the length of the whole record.
418 struct osd_fid_pack {
419 unsigned char fp_len;
420 char fp_area[sizeof(struct lu_fid)];
423 struct osd_it_ea_dirent {
424 struct lu_fid oied_fid;
427 unsigned short oied_namelen;
428 unsigned int oied_type;
430 } __attribute__((packed));
433 * as osd_it_ea_dirent (in memory dirent struct for osd) is greater
434 * than lu_dirent struct. osd readdir reads less number of dirent than
435 * required for mdd dir page. so buffer size need to be increased so that
436 * there would be one ext3 readdir for every mdd readdir page.
439 #define OSD_IT_EA_BUFSIZE (CFS_PAGE_SIZE + CFS_PAGE_SIZE/4)
442 * This is iterator's in-memory data structure in interoperability
443 * mode (i.e. iterator over ldiskfs style directory)
446 struct osd_object *oie_obj;
447 /** used in ldiskfs iterator, to stored file pointer */
448 struct file oie_file;
449 /** how many entries have been read-cached from storage */
451 /** current entry is being iterated by caller */
453 /** current processing entry */
454 struct osd_it_ea_dirent *oie_dirent;
455 /** buffer to hold entries, size == OSD_IT_EA_BUFSIZE */
460 * Iterator's in-memory data structure for IAM mode.
463 struct osd_object *oi_obj;
464 struct iam_path_descr *oi_ipd;
465 struct iam_iterator oi_it;
468 #define MAX_BLOCKS_PER_PAGE (CFS_PAGE_SIZE / 512)
472 cfs_atomic_t dr_numreqs; /* number of reqs being processed */
477 unsigned int dr_ignore_quota:1;
478 unsigned int dr_elapsed_valid:1; /* we really did count time */
479 unsigned int dr_rw:1;
480 struct page *dr_pages[PTLRPC_MAX_BRW_PAGES];
481 unsigned long dr_blocks[PTLRPC_MAX_BRW_PAGES*MAX_BLOCKS_PER_PAGE];
482 unsigned long dr_start_time;
483 unsigned long dr_elapsed; /* how long io took */
484 struct osd_device *dr_dev;
487 struct osd_thread_info {
488 const struct lu_env *oti_env;
490 * used for index operations.
492 struct dentry oti_obj_dentry;
493 struct dentry oti_child_dentry;
495 /** dentry for Iterator context. */
496 struct dentry oti_it_dentry;
497 struct htree_lock *oti_hlock;
499 struct lu_fid oti_fid;
500 struct lu_fid oti_fid2;
501 struct osd_inode_id oti_id;
502 struct osd_inode_id oti_id2;
503 struct ost_id oti_ostid;
506 * XXX temporary: for ->i_op calls.
508 struct timespec oti_time;
510 * XXX temporary: fake struct file for osd_object_sync
512 struct file oti_file;
514 * XXX temporary: for capa operations.
516 struct lustre_capa_key oti_capa_key;
517 struct lustre_capa oti_capa;
519 /** osd_device reference, initialized in osd_trans_start() and
520 used in osd_trans_stop() */
521 struct osd_device *oti_dev;
524 * following ipd and it structures are used for osd_index_iam_lookup()
525 * these are defined separately as we might do index operation
526 * in open iterator session.
529 /** osd iterator context used for iterator session */
532 struct osd_it_iam oti_it;
533 /** ldiskfs iterator data structure, see osd_it_ea_{init, fini} */
534 struct osd_it_ea oti_it_ea;
537 /** pre-allocated buffer used by oti_it_ea, size OSD_IT_EA_BUFSIZE */
540 cfs_kstatfs_t oti_ksfs;
542 /** IAM iterator for index operation. */
543 struct iam_iterator oti_idx_it;
545 /** union to guarantee that ->oti_ipd[] has proper alignment. */
547 char oti_it_ipd[DX_IPD_MAX_SIZE];
548 long long oti_alignment_lieutenant;
552 char oti_idx_ipd[DX_IPD_MAX_SIZE];
553 long long oti_alignment_lieutenant_colonel;
556 struct osd_idmap_cache oti_cache;
561 /** used in osd_fid_set() to put xattr */
562 struct lu_buf oti_buf;
563 /** used in osd_ea_fid_set() to set fid into common ea */
564 struct lustre_mdt_attrs oti_mdt_attrs;
566 struct osd_iobuf oti_iobuf;
567 struct inode oti_inode;
568 int oti_created[PTLRPC_MAX_BRW_PAGES];
569 #ifdef HAVE_QUOTA_SUPPORT
570 struct osd_ctxt oti_ctxt;
572 struct lu_env oti_obj_delete_tx_env;
573 #define OSD_FID_REC_SZ 32
574 char oti_ldp[OSD_FID_REC_SZ];
575 char oti_ldp2[OSD_FID_REC_SZ];
578 extern int ldiskfs_pdo;
582 void lprocfs_osd_init_vars(struct lprocfs_static_vars *lvars);
583 int osd_procfs_init(struct osd_device *osd, const char *name);
584 int osd_procfs_fini(struct osd_device *osd);
585 void osd_lprocfs_time_start(const struct lu_env *env);
586 void osd_lprocfs_time_end(const struct lu_env *env,
587 struct osd_device *osd, int op);
588 void osd_brw_stats_update(struct osd_device *osd, struct osd_iobuf *iobuf);
591 int osd_statfs(const struct lu_env *env, struct dt_device *dev,
592 struct obd_statfs *sfs);
593 int osd_object_auth(const struct lu_env *env, struct dt_object *dt,
594 struct lustre_capa *capa, __u64 opc);
595 void osd_declare_qid(struct dt_object *dt, struct osd_thandle *oh,
596 int type, uid_t id, struct inode *inode);
597 struct inode *osd_iget(struct osd_thread_info *info, struct osd_device *dev,
598 struct osd_inode_id *id);
599 struct inode *osd_iget_fid(struct osd_thread_info *info, struct osd_device *dev,
600 struct osd_inode_id *id, struct lu_fid *fid);
602 int osd_compat_init(struct osd_device *dev);
603 void osd_compat_fini(struct osd_device *dev);
604 int osd_compat_objid_lookup(struct osd_thread_info *info,
605 struct osd_device *osd,
606 const struct lu_fid *fid, struct osd_inode_id *id);
607 int osd_compat_objid_insert(struct osd_thread_info *info,
608 struct osd_device *osd,
609 const struct lu_fid *fid,
610 const struct osd_inode_id *id, struct thandle *th);
611 int osd_compat_objid_delete(struct osd_thread_info *info,
612 struct osd_device *osd,
613 const struct lu_fid *fid, struct thandle *th);
614 int osd_compat_spec_lookup(struct osd_thread_info *info,
615 struct osd_device *osd,
616 const struct lu_fid *fid, struct osd_inode_id *id);
617 int osd_compat_spec_insert(struct osd_thread_info *info,
618 struct osd_device *osd,
619 const struct lu_fid *fid,
620 const struct osd_inode_id *id, struct thandle *th);
622 void osd_scrub_file_reset(struct osd_scrub *scrub, __u8 *uuid, __u64 flags);
623 int osd_scrub_file_store(struct osd_scrub *scrub);
624 int osd_scrub_start(struct osd_device *dev);
625 int osd_scrub_setup(const struct lu_env *env, struct osd_device *dev);
626 void osd_scrub_cleanup(const struct lu_env *env, struct osd_device *dev);
627 int osd_oii_insert(struct osd_device *dev, struct osd_idmap_cache *oic,
629 int osd_oii_lookup(struct osd_device *dev, const struct lu_fid *fid,
630 struct osd_inode_id *id);
633 * Invariants, assertions.
637 * XXX: do not enable this, until invariant checking code is made thread safe
638 * in the face of pdirops locking.
640 #define OSD_INVARIANT_CHECKS (0)
642 #if OSD_INVARIANT_CHECKS
643 static inline int osd_invariant(const struct osd_object *obj)
647 ergo(obj->oo_inode != NULL,
648 obj->oo_inode->i_sb == osd_sb(osd_obj2dev(obj)) &&
649 atomic_read(&obj->oo_inode->i_count) > 0) &&
650 ergo(obj->oo_dir != NULL &&
651 obj->oo_dir->od_conationer.ic_object != NULL,
652 obj->oo_dir->od_conationer.ic_object == obj->oo_inode);
655 #define osd_invariant(obj) (1)
658 extern const struct dt_index_operations osd_otable_ops;
660 static inline int osd_oi_fid2idx(struct osd_device *dev,
661 const struct lu_fid *fid)
663 return fid->f_seq & (dev->od_oi_count - 1);
666 static inline struct osd_oi *osd_fid2oi(struct osd_device *osd,
667 const struct lu_fid *fid)
669 LASSERTF(!fid_is_idif(fid), DFID"\n", PFID(fid));
670 LASSERTF(!fid_is_igif(fid), DFID"\n", PFID(fid));
671 LASSERT(osd->od_oi_table != NULL && osd->od_oi_count >= 1);
672 /* It can work even od_oi_count equals to 1 although it's unexpected,
673 * the only reason we set it to 1 is for performance measurement */
674 return osd->od_oi_table[osd_oi_fid2idx(osd, fid)];
677 extern const struct lu_device_operations osd_lu_ops;
679 static inline int lu_device_is_osd(const struct lu_device *d)
681 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &osd_lu_ops);
684 static inline struct osd_device *osd_dt_dev(const struct dt_device *d)
686 LASSERT(lu_device_is_osd(&d->dd_lu_dev));
687 return container_of0(d, struct osd_device, od_dt_dev);
690 static inline struct osd_device *osd_dev(const struct lu_device *d)
692 LASSERT(lu_device_is_osd(d));
693 return osd_dt_dev(container_of0(d, struct dt_device, dd_lu_dev));
696 static inline struct osd_device *osd_obj2dev(const struct osd_object *o)
698 return osd_dev(o->oo_dt.do_lu.lo_dev);
701 static inline struct super_block *osd_sb(const struct osd_device *dev)
703 return dev->od_mount->lmi_mnt->mnt_sb;
706 static inline int osd_object_is_root(const struct osd_object *obj)
708 return osd_sb(osd_obj2dev(obj))->s_root->d_inode == obj->oo_inode;
711 static inline struct osd_object *osd_obj(const struct lu_object *o)
713 LASSERT(lu_device_is_osd(o->lo_dev));
714 return container_of0(o, struct osd_object, oo_dt.do_lu);
717 static inline struct osd_object *osd_dt_obj(const struct dt_object *d)
719 return osd_obj(&d->do_lu);
722 static inline struct lu_device *osd2lu_dev(struct osd_device *osd)
724 return &osd->od_dt_dev.dd_lu_dev;
727 static inline journal_t *osd_journal(const struct osd_device *dev)
729 return LDISKFS_SB(osd_sb(dev))->s_journal;
732 extern const struct dt_body_operations osd_body_ops;
733 extern struct lu_context_key osd_key;
735 static inline struct osd_thread_info *osd_oti_get(const struct lu_env *env)
737 return lu_context_key_get(&env->le_ctx, &osd_key);
740 extern const struct dt_body_operations osd_body_ops_new;
746 struct iam_path_descr *osd_it_ipd_get(const struct lu_env *env,
747 const struct iam_container *bag)
749 return bag->ic_descr->id_ops->id_ipd_alloc(bag,
750 osd_oti_get(env)->oti_it_ipd);
754 struct iam_path_descr *osd_idx_ipd_get(const struct lu_env *env,
755 const struct iam_container *bag)
757 return bag->ic_descr->id_ops->id_ipd_alloc(bag,
758 osd_oti_get(env)->oti_idx_ipd);
761 static inline void osd_ipd_put(const struct lu_env *env,
762 const struct iam_container *bag,
763 struct iam_path_descr *ipd)
765 bag->ic_descr->id_ops->id_ipd_free(ipd);
768 int osd_ldiskfs_read(struct inode *inode, void *buf, int size, loff_t *offs);
769 int osd_ldiskfs_write_record(struct inode *inode, void *buf, int bufsize,
770 loff_t *offs, handle_t *handle);
773 struct dentry *osd_child_dentry_by_inode(const struct lu_env *env,
775 const char *name, const int namelen)
777 struct osd_thread_info *info = osd_oti_get(env);
778 struct dentry *child_dentry = &info->oti_child_dentry;
779 struct dentry *obj_dentry = &info->oti_obj_dentry;
781 obj_dentry->d_inode = inode;
782 obj_dentry->d_sb = inode->i_sb;
783 obj_dentry->d_name.hash = 0;
785 child_dentry->d_name.hash = 0;
786 child_dentry->d_parent = obj_dentry;
787 child_dentry->d_name.name = name;
788 child_dentry->d_name.len = namelen;
793 * Helper function to pack the fid, ldiskfs stores fid in packed format.
796 void osd_fid_pack(struct osd_fid_pack *pack, const struct dt_rec *fid,
797 struct lu_fid *befider)
799 fid_cpu_to_be(befider, (struct lu_fid *)fid);
800 memcpy(pack->fp_area, befider, sizeof(*befider));
801 pack->fp_len = sizeof(*befider) + 1;
805 int osd_fid_unpack(struct lu_fid *fid, const struct osd_fid_pack *pack)
810 switch (pack->fp_len) {
811 case sizeof *fid + 1:
812 memcpy(fid, pack->fp_area, sizeof *fid);
813 fid_be_to_cpu(fid, fid);
816 CERROR("Unexpected packed fid size: %d\n", pack->fp_len);
822 #endif /* __KERNEL__ */
823 #endif /* _OSD_INTERNAL_H */