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,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License version 2 for more details. A copy is
14 * included in the COPYING file that accompanied this code.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 * Copyright (c) 2012, 2013, Intel Corporation.
26 * lustre/obdclass/local_storage.c
28 * Local storage for file/objects with fid generation. Works on top of OSD.
30 * Author: Mikhail Pershin <mike.pershin@intel.com>
33 #define DEBUG_SUBSYSTEM S_CLASS
35 #include "local_storage.h"
37 /* all initialized local storages on this node are linked on this */
38 static CFS_LIST_HEAD(ls_list_head);
39 static DEFINE_MUTEX(ls_list_mutex);
41 static int ls_object_init(const struct lu_env *env, struct lu_object *o,
42 const struct lu_object_conf *unused)
45 struct lu_object *below;
46 struct lu_device *under;
50 ls = container_of0(o->lo_dev, struct ls_device, ls_top_dev.dd_lu_dev);
51 under = &ls->ls_osd->dd_lu_dev;
52 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
56 lu_object_add(o, below);
61 static void ls_object_free(const struct lu_env *env, struct lu_object *o)
63 struct ls_object *obj = lu2ls_obj(o);
64 struct lu_object_header *h = o->lo_header;
66 dt_object_fini(&obj->ls_obj);
67 lu_object_header_fini(h);
71 struct lu_object_operations ls_lu_obj_ops = {
72 .loo_object_init = ls_object_init,
73 .loo_object_free = ls_object_free,
76 struct lu_object *ls_object_alloc(const struct lu_env *env,
77 const struct lu_object_header *_h,
80 struct lu_object_header *h;
91 lu_object_header_init(h);
92 dt_object_init(&o->ls_obj, h, d);
93 lu_object_add_top(h, l);
95 l->lo_ops = &ls_lu_obj_ops;
103 static struct lu_device_operations ls_lu_dev_ops = {
104 .ldo_object_alloc = ls_object_alloc
107 static struct ls_device *__ls_find_dev(struct dt_device *dev)
109 struct ls_device *ls, *ret = NULL;
111 cfs_list_for_each_entry(ls, &ls_list_head, ls_linkage) {
112 if (ls->ls_osd == dev) {
113 cfs_atomic_inc(&ls->ls_refcount);
121 struct ls_device *ls_find_dev(struct dt_device *dev)
123 struct ls_device *ls;
125 mutex_lock(&ls_list_mutex);
126 ls = __ls_find_dev(dev);
127 mutex_unlock(&ls_list_mutex);
132 static struct lu_device_type_operations ls_device_type_ops = {
137 static struct lu_device_type ls_lu_type = {
138 .ldt_name = "local_storage",
139 .ldt_ops = &ls_device_type_ops,
142 struct ls_device *ls_device_get(struct dt_device *dev)
144 struct ls_device *ls;
148 mutex_lock(&ls_list_mutex);
149 ls = __ls_find_dev(dev);
153 /* not found, then create */
156 GOTO(out_ls, ls = ERR_PTR(-ENOMEM));
158 cfs_atomic_set(&ls->ls_refcount, 1);
159 CFS_INIT_LIST_HEAD(&ls->ls_los_list);
160 mutex_init(&ls->ls_los_mutex);
164 LASSERT(dev->dd_lu_dev.ld_site);
165 lu_device_init(&ls->ls_top_dev.dd_lu_dev, &ls_lu_type);
166 ls->ls_top_dev.dd_lu_dev.ld_ops = &ls_lu_dev_ops;
167 ls->ls_top_dev.dd_lu_dev.ld_site = dev->dd_lu_dev.ld_site;
169 /* finally add ls to the list */
170 cfs_list_add(&ls->ls_linkage, &ls_list_head);
172 mutex_unlock(&ls_list_mutex);
176 void ls_device_put(const struct lu_env *env, struct ls_device *ls)
179 if (!cfs_atomic_dec_and_test(&ls->ls_refcount))
182 mutex_lock(&ls_list_mutex);
183 if (cfs_atomic_read(&ls->ls_refcount) == 0) {
184 LASSERT(cfs_list_empty(&ls->ls_los_list));
185 cfs_list_del(&ls->ls_linkage);
186 lu_site_purge(env, ls->ls_top_dev.dd_lu_dev.ld_site, ~0);
187 lu_device_fini(&ls->ls_top_dev.dd_lu_dev);
190 mutex_unlock(&ls_list_mutex);
194 * local file fid generation
196 int local_object_fid_generate(const struct lu_env *env,
197 struct local_oid_storage *los,
200 LASSERT(los->los_dev);
201 LASSERT(los->los_obj);
205 /* to make it unique after reboot we store
206 * the latest generated fid atomically with
207 * object creation see local_object_create() */
209 mutex_lock(&los->los_id_lock);
210 fid->f_seq = los->los_seq;
211 fid->f_oid = ++los->los_last_oid;
213 mutex_unlock(&los->los_id_lock);
218 int local_object_declare_create(const struct lu_env *env,
219 struct local_oid_storage *los,
220 struct dt_object *o, struct lu_attr *attr,
221 struct dt_object_format *dof,
224 struct dt_thread_info *dti = dt_info(env);
229 /* update fid generation file */
231 LASSERT(dt_object_exists(los->los_obj));
232 rc = dt_declare_record_write(env, los->los_obj,
233 sizeof(struct los_ondisk), 0, th);
238 rc = dt_declare_create(env, o, attr, NULL, dof, th);
242 dti->dti_lb.lb_buf = NULL;
243 dti->dti_lb.lb_len = sizeof(dti->dti_lma);
244 rc = dt_declare_xattr_set(env, o, &dti->dti_lb, XATTR_NAME_LMA, 0, th);
249 int local_object_create(const struct lu_env *env,
250 struct local_oid_storage *los,
251 struct dt_object *o, struct lu_attr *attr,
252 struct dt_object_format *dof, struct thandle *th)
254 struct dt_thread_info *dti = dt_info(env);
260 rc = dt_create(env, o, attr, NULL, dof, th);
267 LASSERT(los->los_obj);
268 LASSERT(dt_object_exists(los->los_obj));
270 /* many threads can be updated this, serialize
271 * them here to avoid the race where one thread
272 * takes the value first, but writes it last */
273 mutex_lock(&los->los_id_lock);
275 /* update local oid number on disk so that
276 * we know the last one used after reboot */
277 lastid = cpu_to_le64(los->los_last_oid);
280 dti->dti_lb.lb_buf = &lastid;
281 dti->dti_lb.lb_len = sizeof(lastid);
282 rc = dt_record_write(env, los->los_obj, &dti->dti_lb, &dti->dti_off,
284 mutex_unlock(&los->los_id_lock);
290 * Create local named object (file, directory or index) in parent directory.
292 struct dt_object *__local_file_create(const struct lu_env *env,
293 const struct lu_fid *fid,
294 struct local_oid_storage *los,
295 struct ls_device *ls,
296 struct dt_object *parent,
297 const char *name, struct lu_attr *attr,
298 struct dt_object_format *dof)
300 struct dt_thread_info *dti = dt_info(env);
301 struct dt_object *dto;
305 dto = ls_locate(env, ls, fid);
306 if (unlikely(IS_ERR(dto)))
309 LASSERT(dto != NULL);
310 if (dt_object_exists(dto))
311 GOTO(out, rc = -EEXIST);
313 th = dt_trans_create(env, ls->ls_osd);
315 GOTO(out, rc = PTR_ERR(th));
317 rc = local_object_declare_create(env, los, dto, attr, dof, th);
319 GOTO(trans_stop, rc);
321 if (dti->dti_dof.dof_type == DFT_DIR) {
322 dt_declare_ref_add(env, dto, th);
323 dt_declare_ref_add(env, parent, th);
326 rc = dt_declare_insert(env, parent, (void *)fid, (void *)name, th);
328 GOTO(trans_stop, rc);
330 rc = dt_trans_start_local(env, ls->ls_osd, th);
332 GOTO(trans_stop, rc);
334 dt_write_lock(env, dto, 0);
335 if (dt_object_exists(dto))
336 GOTO(unlock, rc = 0);
338 CDEBUG(D_OTHER, "create new object "DFID"\n",
339 PFID(lu_object_fid(&dto->do_lu)));
340 rc = local_object_create(env, los, dto, attr, dof, th);
343 LASSERT(dt_object_exists(dto));
345 if (dti->dti_dof.dof_type == DFT_DIR) {
346 if (!dt_try_as_dir(env, dto))
347 GOTO(destroy, rc = -ENOTDIR);
348 /* Add "." and ".." for newly created dir */
349 rc = dt_insert(env, dto, (void *)fid, (void *)".", th,
353 dt_ref_add(env, dto, th);
354 rc = dt_insert(env, dto, (void *)lu_object_fid(&parent->do_lu),
355 (void *)"..", th, BYPASS_CAPA, 1);
360 dt_write_lock(env, parent, 0);
361 rc = dt_insert(env, parent, (const struct dt_rec *)fid,
362 (const struct dt_key *)name, th, BYPASS_CAPA, 1);
363 if (dti->dti_dof.dof_type == DFT_DIR)
364 dt_ref_add(env, parent, th);
365 dt_write_unlock(env, parent);
370 dt_destroy(env, dto, th);
372 dt_write_unlock(env, dto);
374 dt_trans_stop(env, ls->ls_osd, th);
377 lu_object_put_nocache(env, &dto->do_lu);
384 * Look up and create (if it does not exist) a local named file or directory in
387 struct dt_object *local_file_find_or_create(const struct lu_env *env,
388 struct local_oid_storage *los,
389 struct dt_object *parent,
390 const char *name, __u32 mode)
392 struct dt_thread_info *dti = dt_info(env);
393 struct dt_object *dto;
398 rc = dt_lookup_dir(env, parent, name, &dti->dti_fid);
400 /* name is found, get the object */
401 dto = ls_locate(env, dt2ls_dev(los->los_dev), &dti->dti_fid);
402 else if (rc != -ENOENT)
405 rc = local_object_fid_generate(env, los, &dti->dti_fid);
409 /* create the object */
410 dti->dti_attr.la_valid = LA_MODE;
411 dti->dti_attr.la_mode = mode;
412 dti->dti_dof.dof_type = dt_mode_to_dft(mode & S_IFMT);
413 dto = __local_file_create(env, &dti->dti_fid, los,
414 dt2ls_dev(los->los_dev),
415 parent, name, &dti->dti_attr,
421 EXPORT_SYMBOL(local_file_find_or_create);
423 struct dt_object *local_file_find_or_create_with_fid(const struct lu_env *env,
424 struct dt_device *dt,
425 const struct lu_fid *fid,
426 struct dt_object *parent,
430 struct dt_thread_info *dti = dt_info(env);
431 struct dt_object *dto;
436 rc = dt_lookup_dir(env, parent, name, &dti->dti_fid);
438 dto = dt_locate(env, dt, &dti->dti_fid);
439 } else if (rc != -ENOENT) {
442 struct ls_device *ls;
444 ls = ls_device_get(dt);
446 dto = ERR_PTR(PTR_ERR(ls));
448 /* create the object */
449 dti->dti_attr.la_valid = LA_MODE;
450 dti->dti_attr.la_mode = mode;
451 dti->dti_dof.dof_type = dt_mode_to_dft(mode & S_IFMT);
452 dto = __local_file_create(env, fid, NULL, ls, parent,
453 name, &dti->dti_attr,
455 /* ls_device_put() will finalize the ls device, we
456 * have to open the object in other device stack */
458 dti->dti_fid = dto->do_lu.lo_header->loh_fid;
459 lu_object_put_nocache(env, &dto->do_lu);
460 dto = dt_locate(env, dt, &dti->dti_fid);
462 ls_device_put(env, ls);
467 EXPORT_SYMBOL(local_file_find_or_create_with_fid);
470 * Look up and create (if it does not exist) a local named index file in parent
473 struct dt_object *local_index_find_or_create(const struct lu_env *env,
474 struct local_oid_storage *los,
475 struct dt_object *parent,
476 const char *name, __u32 mode,
477 const struct dt_index_features *ft)
479 struct dt_thread_info *dti = dt_info(env);
480 struct dt_object *dto;
485 rc = dt_lookup_dir(env, parent, name, &dti->dti_fid);
487 /* name is found, get the object */
488 dto = ls_locate(env, dt2ls_dev(los->los_dev), &dti->dti_fid);
489 } else if (rc != -ENOENT) {
492 rc = local_object_fid_generate(env, los, &dti->dti_fid);
496 /* create the object */
497 dti->dti_attr.la_valid = LA_MODE;
498 dti->dti_attr.la_mode = mode;
499 dti->dti_dof.dof_type = DFT_INDEX;
500 dti->dti_dof.u.dof_idx.di_feat = ft;
501 dto = __local_file_create(env, &dti->dti_fid, los,
502 dt2ls_dev(los->los_dev),
503 parent, name, &dti->dti_attr,
510 EXPORT_SYMBOL(local_index_find_or_create);
513 local_index_find_or_create_with_fid(const struct lu_env *env,
514 struct dt_device *dt,
515 const struct lu_fid *fid,
516 struct dt_object *parent,
517 const char *name, __u32 mode,
518 const struct dt_index_features *ft)
520 struct dt_thread_info *dti = dt_info(env);
521 struct dt_object *dto;
526 rc = dt_lookup_dir(env, parent, name, &dti->dti_fid);
528 /* name is found, get the object */
529 if (!lu_fid_eq(fid, &dti->dti_fid))
530 dto = ERR_PTR(-EINVAL);
532 dto = dt_locate(env, dt, fid);
533 } else if (rc != -ENOENT) {
536 struct ls_device *ls;
538 ls = ls_device_get(dt);
540 dto = ERR_PTR(PTR_ERR(ls));
542 /* create the object */
543 dti->dti_attr.la_valid = LA_MODE;
544 dti->dti_attr.la_mode = mode;
545 dti->dti_dof.dof_type = DFT_INDEX;
546 dti->dti_dof.u.dof_idx.di_feat = ft;
547 dto = __local_file_create(env, fid, NULL, ls, parent,
548 name, &dti->dti_attr,
550 /* ls_device_put() will finalize the ls device, we
551 * have to open the object in other device stack */
553 dti->dti_fid = dto->do_lu.lo_header->loh_fid;
554 lu_object_put_nocache(env, &dto->do_lu);
555 dto = dt_locate(env, dt, &dti->dti_fid);
557 ls_device_put(env, ls);
562 EXPORT_SYMBOL(local_index_find_or_create_with_fid);
564 static int local_object_declare_unlink(const struct lu_env *env,
565 struct dt_device *dt,
567 struct dt_object *c, const char *name,
572 rc = dt_declare_delete(env, p, (const struct dt_key *)name, th);
576 rc = dt_declare_ref_del(env, c, th);
580 return dt_declare_destroy(env, c, th);
583 int local_object_unlink(const struct lu_env *env, struct dt_device *dt,
584 struct dt_object *parent, const char *name)
586 struct dt_thread_info *dti = dt_info(env);
587 struct dt_object *dto;
593 rc = dt_lookup_dir(env, parent, name, &dti->dti_fid);
599 dto = dt_locate(env, dt, &dti->dti_fid);
600 if (unlikely(IS_ERR(dto)))
601 RETURN(PTR_ERR(dto));
603 th = dt_trans_create(env, dt);
605 GOTO(out, rc = PTR_ERR(th));
607 rc = local_object_declare_unlink(env, dt, parent, dto, name, th);
611 rc = dt_trans_start_local(env, dt, th);
615 dt_write_lock(env, dto, 0);
616 rc = dt_delete(env, parent, (struct dt_key *)name, th, BYPASS_CAPA);
620 rc = dt_ref_del(env, dto, th);
622 rc = dt_insert(env, parent,
623 (const struct dt_rec *)&dti->dti_fid,
624 (const struct dt_key *)name, th, BYPASS_CAPA, 1);
628 rc = dt_destroy(env, dto, th);
630 dt_write_unlock(env, dto);
632 dt_trans_stop(env, dt, th);
634 lu_object_put_nocache(env, &dto->do_lu);
637 EXPORT_SYMBOL(local_object_unlink);
639 struct local_oid_storage *dt_los_find(struct ls_device *ls, __u64 seq)
641 struct local_oid_storage *los, *ret = NULL;
643 cfs_list_for_each_entry(los, &ls->ls_los_list, los_list) {
644 if (los->los_seq == seq) {
645 cfs_atomic_inc(&los->los_refcount);
653 void dt_los_put(struct local_oid_storage *los)
655 if (cfs_atomic_dec_and_test(&los->los_refcount))
656 /* should never happen, only local_oid_storage_fini should
657 * drop refcount to zero */
662 /* after Lustre 2.3 release there may be old file to store last generated FID
663 * If such file exists then we have to read its content
665 int lastid_compat_check(const struct lu_env *env, struct dt_device *dev,
666 __u64 lastid_seq, __u32 *first_oid, struct ls_device *ls)
668 struct dt_thread_info *dti = dt_info(env);
669 struct dt_object *root = NULL;
670 struct los_ondisk losd;
671 struct dt_object *o = NULL;
674 rc = dt_root_get(env, dev, &dti->dti_fid);
678 root = ls_locate(env, ls, &dti->dti_fid);
680 return PTR_ERR(root);
682 /* find old last_id file */
683 snprintf(dti->dti_buf, sizeof(dti->dti_buf), "seq-"LPX64"-lastid",
685 rc = dt_lookup_dir(env, root, dti->dti_buf, &dti->dti_fid);
686 lu_object_put_nocache(env, &root->do_lu);
688 /* old llog lastid accessed by FID only */
689 if (lastid_seq != FID_SEQ_LLOG)
691 dti->dti_fid.f_seq = FID_SEQ_LLOG;
692 dti->dti_fid.f_oid = 1;
693 dti->dti_fid.f_ver = 0;
694 o = ls_locate(env, ls, &dti->dti_fid);
698 if (!dt_object_exists(o)) {
699 lu_object_put_nocache(env, &o->do_lu);
702 CDEBUG(D_INFO, "Found old llog lastid file\n");
706 CDEBUG(D_INFO, "Found old lastid file for sequence "LPX64"\n",
708 o = ls_locate(env, ls, &dti->dti_fid);
712 /* let's read seq-NNNNNN-lastid file value */
713 LASSERT(dt_object_exists(o));
715 dti->dti_lb.lb_buf = &losd;
716 dti->dti_lb.lb_len = sizeof(losd);
717 dt_read_lock(env, o, 0);
718 rc = dt_record_read(env, o, &dti->dti_lb, &dti->dti_off);
719 dt_read_unlock(env, o);
720 lu_object_put_nocache(env, &o->do_lu);
721 if (rc == 0 && le32_to_cpu(losd.lso_magic) != LOS_MAGIC) {
722 CERROR("%s: wrong content of seq-"LPX64"-lastid file, magic %x\n",
723 o->do_lu.lo_dev->ld_obd->obd_name, lastid_seq,
724 le32_to_cpu(losd.lso_magic));
727 CERROR("%s: failed to read seq-"LPX64"-lastid: rc = %d\n",
728 o->do_lu.lo_dev->ld_obd->obd_name, lastid_seq, rc);
731 *first_oid = le32_to_cpu(losd.lso_next_oid);
736 * Initialize local OID storage for required sequence.
737 * That may be needed for services that uses local files and requires
738 * dynamic OID allocation for them.
740 * Per each sequence we have an object with 'first_fid' identificator
741 * containing the counter for OIDs of locally created files with that
744 * It is used now by llog subsystem and MGS for NID tables
746 * Function gets first_fid to create counter object.
747 * All dynamic fids will be generated with the same sequence and incremented
750 * Returned local_oid_storage is in-memory representaion of OID storage
752 int local_oid_storage_init(const struct lu_env *env, struct dt_device *dev,
753 const struct lu_fid *first_fid,
754 struct local_oid_storage **los)
756 struct dt_thread_info *dti = dt_info(env);
757 struct ls_device *ls;
759 struct dt_object *o = NULL;
761 __u32 first_oid = fid_oid(first_fid);
766 ls = ls_device_get(dev);
770 mutex_lock(&ls->ls_los_mutex);
771 *los = dt_los_find(ls, fid_seq(first_fid));
775 /* not found, then create */
778 GOTO(out, rc = -ENOMEM);
780 cfs_atomic_set(&(*los)->los_refcount, 1);
781 mutex_init(&(*los)->los_id_lock);
782 (*los)->los_dev = &ls->ls_top_dev;
783 cfs_atomic_inc(&ls->ls_refcount);
784 cfs_list_add(&(*los)->los_list, &ls->ls_los_list);
786 /* Use {seq, 0, 0} to create the LAST_ID file for every
787 * sequence. OIDs start at LUSTRE_FID_INIT_OID.
789 dti->dti_fid.f_seq = fid_seq(first_fid);
790 dti->dti_fid.f_oid = LUSTRE_FID_LASTID_OID;
791 dti->dti_fid.f_ver = 0;
792 o = ls_locate(env, ls, &dti->dti_fid);
794 GOTO(out_los, rc = PTR_ERR(o));
796 if (!dt_object_exists(o)) {
797 rc = lastid_compat_check(env, dev, fid_seq(first_fid),
802 th = dt_trans_create(env, dev);
804 GOTO(out_los, rc = PTR_ERR(th));
806 dti->dti_attr.la_valid = LA_MODE | LA_TYPE;
807 dti->dti_attr.la_mode = S_IFREG | S_IRUGO | S_IWUSR;
808 dti->dti_dof.dof_type = dt_mode_to_dft(S_IFREG);
810 rc = dt_declare_create(env, o, &dti->dti_attr, NULL,
815 rc = dt_declare_record_write(env, o, sizeof(lastid), 0, th);
819 rc = dt_trans_start_local(env, dev, th);
823 dt_write_lock(env, o, 0);
824 if (dt_object_exists(o))
825 GOTO(out_lock, rc = 0);
827 rc = dt_create(env, o, &dti->dti_attr, NULL, &dti->dti_dof,
832 lastid = cpu_to_le64(first_oid);
835 dti->dti_lb.lb_buf = &lastid;
836 dti->dti_lb.lb_len = sizeof(lastid);
837 rc = dt_record_write(env, o, &dti->dti_lb, &dti->dti_off, th);
841 dt_write_unlock(env, o);
843 dt_trans_stop(env, dev, th);
846 dti->dti_lb.lb_buf = &lastid;
847 dti->dti_lb.lb_len = sizeof(lastid);
848 dt_read_lock(env, o, 0);
849 rc = dt_record_read(env, o, &dti->dti_lb, &dti->dti_off);
850 dt_read_unlock(env, o);
851 if (rc == 0 && le64_to_cpu(lastid) > OBIF_MAX_OID) {
852 CERROR("%s: bad oid "LPU64" is read from LAST_ID\n",
853 o->do_lu.lo_dev->ld_obd->obd_name,
854 le64_to_cpu(lastid));
860 cfs_list_del(&(*los)->los_list);
861 cfs_atomic_dec(&ls->ls_refcount);
864 if (o != NULL && !IS_ERR(o))
865 lu_object_put_nocache(env, &o->do_lu);
867 (*los)->los_seq = fid_seq(first_fid);
868 (*los)->los_last_oid = le64_to_cpu(lastid);
870 /* Read value should not be less than initial one
871 * but possible after upgrade from older fs.
872 * In this case just switch to the first_oid in memory and
873 * it will be updated on disk with first object generated */
874 if ((*los)->los_last_oid < first_oid)
875 (*los)->los_last_oid = first_oid;
878 mutex_unlock(&ls->ls_los_mutex);
879 ls_device_put(env, ls);
882 EXPORT_SYMBOL(local_oid_storage_init);
884 void local_oid_storage_fini(const struct lu_env *env,
885 struct local_oid_storage *los)
887 struct ls_device *ls;
889 if (!cfs_atomic_dec_and_test(&los->los_refcount))
893 LASSERT(los->los_dev);
894 ls = dt2ls_dev(los->los_dev);
896 mutex_lock(&ls->ls_los_mutex);
897 if (cfs_atomic_read(&los->los_refcount) > 0) {
898 mutex_unlock(&ls->ls_los_mutex);
903 lu_object_put_nocache(env, &los->los_obj->do_lu);
904 cfs_list_del(&los->los_list);
906 mutex_unlock(&ls->ls_los_mutex);
907 ls_device_put(env, ls);
909 EXPORT_SYMBOL(local_oid_storage_fini);