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) 2012, 2014, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/osp/osp_internal.h
38 * Author: Alex Zhuravlev <alexey.zhuravlev@intel.com>
41 #ifndef _OSP_INTERNAL_H
42 #define _OSP_INTERNAL_H
45 #include <obd_class.h>
46 #include <dt_object.h>
47 #include <md_object.h>
48 #include <lustre_fid.h>
49 #include <lustre_update.h>
50 #include <lu_target.h>
51 #include <lustre_mdc.h>
54 * Infrastructure to support tracking of last committed llog record
56 struct osp_id_tracker {
59 __u32 otr_committed_id;
60 /* callback is register once per diskfs -- that's the whole point */
61 struct dt_txn_callback otr_tx_cb;
62 /* single node can run many clusters */
63 struct list_head otr_wakeup_list;
64 struct list_head otr_list;
65 /* underlying shared device */
66 struct dt_device *otr_dev;
67 /* how many users of this tracker */
68 atomic_t otr_refcount;
71 struct osp_precreate {
75 spinlock_t osp_pre_lock;
77 /* last fid to assign in creation */
78 struct lu_fid osp_pre_used_fid;
79 /* last created id OST reported, next-created - available id's */
80 struct lu_fid osp_pre_last_created_fid;
81 /* how many ids are reserved in declare, we shouldn't block in create */
82 __u64 osp_pre_reserved;
83 /* consumers (who needs new ids) wait here */
84 wait_queue_head_t osp_pre_user_waitq;
85 /* current precreation status: working, failed, stopping? */
87 /* how many to precreate next time */
88 int osp_pre_grow_count;
89 int osp_pre_min_grow_count;
90 int osp_pre_max_grow_count;
91 /* whether to grow precreation window next time or not */
92 int osp_pre_grow_slow;
93 /* cleaning up orphans or recreating missing objects */
94 int osp_pre_recovering;
97 struct osp_update_request_sub {
98 struct object_update_request *ours_req;
100 /* Linked to osp_update_request->our_req_list */
101 struct list_head ours_list;
105 * Tracking the updates being executed on this dt_device.
107 struct osp_update_request {
109 /* update request result */
112 /* List of osp_update_request_sub */
113 struct list_head our_req_list;
115 struct list_head our_cb_items;
117 /* points to thandle if this update request belongs to one */
118 struct osp_thandle *our_th;
119 /* linked to the list(ou_list) in osp_updates */
120 struct list_head our_list;
121 __u32 our_req_sent:1;
125 struct list_head ou_list;
127 wait_queue_head_t ou_waitq;
128 /* wait for next updates */
129 __u64 ou_rpc_version;
134 struct dt_device opd_dt_dev;
135 /* corresponded OST index */
138 /* corrsponded MDT index, which will be used when connecting to OST
139 * for validating the connection (see ofd_parse_connect_data) */
141 /* device used to store persistent state (llogs, last ids) */
142 struct obd_export *opd_storage_exp;
143 struct dt_device *opd_storage;
144 struct dt_object *opd_last_used_oid_file;
145 struct dt_object *opd_last_used_seq_file;
147 /* stored persistently in LE format, updated directly to/from disk
148 * and required le64_to_cpu() conversion before use.
149 * Protected by opd_pre_lock */
150 struct lu_fid opd_last_used_fid;
151 struct lu_fid opd_gap_start_fid;
153 /* connection to OST */
154 struct obd_device *opd_obd;
155 struct obd_export *opd_exp;
156 struct obd_uuid opd_cluuid;
157 struct obd_connect_data *opd_connect_data;
159 struct proc_dir_entry *opd_proc_entry;
160 struct lprocfs_stats *opd_stats;
161 /* connection status. */
162 unsigned int opd_new_connection:1,
163 opd_got_disconnected:1,
166 opd_imp_seen_connected:1,
169 /* whether local recovery is completed:
170 * reported via ->ldo_recovery_complete() */
171 int opd_recovery_completed;
173 /* precreate structure for OSP */
174 struct osp_precreate *opd_pre;
175 /* dedicate precreate thread */
176 struct ptlrpc_thread opd_pre_thread;
177 /* thread waits for signals about pool going empty */
178 wait_queue_head_t opd_pre_waitq;
180 /* send update thread */
181 struct osp_updates *opd_update;
182 /* dedicate update thread */
183 struct ptlrpc_thread opd_update_thread;
186 * OST synchronization
188 spinlock_t opd_syn_lock;
189 /* unique generation, to recognize start of new records in the llog */
190 struct llog_gen opd_syn_generation;
191 /* number of changes to sync, used to wake up sync thread */
192 unsigned long opd_syn_changes;
193 /* processing of changes from previous mount is done? */
194 int opd_syn_prev_done;
196 struct ptlrpc_thread opd_syn_thread;
197 wait_queue_head_t opd_syn_waitq;
198 /* list of inflight rpc */
199 struct list_head opd_syn_inflight_list;
200 /* list of remotely committed rpc */
201 struct list_head opd_syn_committed_there;
202 /* number of changes being under sync */
203 int opd_syn_sync_in_progress;
204 /* number of RPCs in flight - flow control */
205 int opd_syn_rpc_in_flight;
206 int opd_syn_max_rpc_in_flight;
207 /* number of RPC in processing (including non-committed by OST) */
208 int opd_syn_rpc_in_progress;
209 int opd_syn_max_rpc_in_progress;
210 /* osd api's commit cb control structure */
211 struct dt_txn_callback opd_syn_txn_cb;
212 /* last used change number -- semantically similar to transno */
213 unsigned long opd_syn_last_used_id;
214 /* last committed change number -- semantically similar to
216 unsigned long opd_syn_last_committed_id;
217 /* last processed (taken from llog) id */
218 unsigned long opd_syn_last_processed_id;
219 struct osp_id_tracker *opd_syn_tracker;
220 struct list_head opd_syn_ontrack;
221 /* stop processing new requests until barrier=0 */
222 atomic_t opd_syn_barrier;
223 wait_queue_head_t opd_syn_barrier_waitq;
226 * statfs related fields: OSP maintains it on its own
228 struct obd_statfs opd_statfs;
229 cfs_time_t opd_statfs_fresh_till;
230 struct timer_list opd_statfs_timer;
231 int opd_statfs_update_in_progress;
232 /* how often to update statfs data */
233 int opd_statfs_maxage;
235 struct proc_dir_entry *opd_symlink;
237 /* If the caller wants to do some idempotent async operations on
238 * remote server, it can append the async remote requests on the
239 * osp_device::opd_async_requests via declare() functions, these
240 * requests can be packed together and sent to the remote server
241 * via single OUT RPC later. */
242 struct osp_update_request *opd_async_requests;
243 /* Protect current operations on opd_async_requests. */
244 struct mutex opd_async_requests_mutex;
245 struct list_head opd_async_updates;
246 struct rw_semaphore opd_async_updates_rwsem;
247 atomic_t opd_async_updates_count;
250 #define opd_pre_lock opd_pre->osp_pre_lock
251 #define opd_pre_used_fid opd_pre->osp_pre_used_fid
252 #define opd_pre_last_created_fid opd_pre->osp_pre_last_created_fid
253 #define opd_pre_reserved opd_pre->osp_pre_reserved
254 #define opd_pre_user_waitq opd_pre->osp_pre_user_waitq
255 #define opd_pre_status opd_pre->osp_pre_status
256 #define opd_pre_grow_count opd_pre->osp_pre_grow_count
257 #define opd_pre_min_grow_count opd_pre->osp_pre_min_grow_count
258 #define opd_pre_max_grow_count opd_pre->osp_pre_max_grow_count
259 #define opd_pre_grow_slow opd_pre->osp_pre_grow_slow
260 #define opd_pre_recovering opd_pre->osp_pre_recovering
262 extern struct kmem_cache *osp_object_kmem;
264 /* The first part of oxe_buf is xattr name, and is '\0' terminated.
265 * The left part is for value, binary mode. */
266 struct osp_xattr_entry {
267 struct list_head oxe_list;
273 unsigned int oxe_exist:1,
278 struct osp_object_attr {
279 struct lu_attr ooa_attr;
280 struct list_head ooa_xattr_list;
283 /* this is a top object */
285 struct lu_object_header opo_header;
286 struct dt_object opo_obj;
287 unsigned int opo_reserved:1,
290 /* read/write lock for md osp object */
291 struct rw_semaphore opo_sem;
292 const struct lu_env *opo_owner;
293 struct osp_object_attr *opo_ooa;
294 /* Protect opo_ooa. */
298 extern struct lu_object_operations osp_lu_obj_ops;
299 extern const struct dt_device_operations osp_dt_ops;
300 extern struct dt_object_operations osp_md_obj_ops;
301 extern struct dt_body_operations osp_md_body_ops;
303 struct osp_thread_info {
304 struct lu_buf osi_lb;
305 struct lu_buf osi_lb2;
306 struct lu_fid osi_fid;
307 struct lu_attr osi_attr;
308 struct ost_id osi_oi;
309 struct ost_id osi_oi2;
313 struct llog_rec_hdr osi_hdr;
314 struct llog_unlink64_rec osi_unlink;
315 struct llog_setattr64_rec osi_setattr;
316 struct llog_gen_rec osi_gen;
318 struct llog_cookie osi_cookie;
319 struct llog_catid osi_cid;
320 struct lu_seq_range osi_seq;
321 struct ldlm_res_id osi_resid;
322 struct obdo osi_obdo;
325 /* Iterator for OSP */
328 __u32 ooi_pos_lu_page;
331 int ooi_total_npages;
332 int ooi_valid_npages;
333 unsigned int ooi_swab:1;
335 struct dt_object *ooi_obj;
337 struct page *ooi_cur_page;
338 struct lu_idxpage *ooi_cur_idxpage;
339 struct page **ooi_pages;
342 #define OSP_THANDLE_MAGIC 0x20141214
344 struct thandle ot_super;
346 /* OSP will use this thandle to update last oid*/
347 struct thandle *ot_storage_th;
349 struct list_head ot_commit_dcb_list;
350 struct list_head ot_stop_dcb_list;
351 struct osp_update_request *ot_our;
352 atomic_t ot_refcount;
356 static inline struct osp_thandle *
357 thandle_to_osp_thandle(struct thandle *th)
359 return container_of(th, struct osp_thandle, ot_super);
362 static inline struct osp_update_request *
363 thandle_to_osp_update_request(struct thandle *th)
365 struct osp_thandle *oth;
367 oth = thandle_to_osp_thandle(th);
371 /* The transaction only include the updates on the remote node, and
372 * no local updates at all */
373 static inline bool is_only_remote_trans(struct thandle *th)
375 return th->th_top == NULL;
378 static inline void osp_objid_buf_prep(struct lu_buf *buf, loff_t *off,
379 __u32 *id, int index)
381 /* Note: through id is only 32 bits, it will also write 64 bits
382 * for oid to keep compatibility with the previous version. */
383 buf->lb_buf = (void *)id;
384 buf->lb_len = sizeof(u64);
385 *off = sizeof(u64) * index;
388 static inline void osp_objseq_buf_prep(struct lu_buf *buf, loff_t *off,
389 __u64 *seq, int index)
391 buf->lb_buf = (void *)seq;
392 buf->lb_len = sizeof(u64);
393 *off = sizeof(u64) * index;
396 static inline void osp_buf_prep(struct lu_buf *lb, void *buf, int buf_len)
399 lb->lb_len = buf_len;
402 extern struct lu_context_key osp_thread_key;
404 static inline struct osp_thread_info *osp_env_info(const struct lu_env *env)
406 struct osp_thread_info *info;
408 info = lu_context_key_get(&env->le_ctx, &osp_thread_key);
410 lu_env_refill((struct lu_env *)env);
411 info = lu_context_key_get(&env->le_ctx, &osp_thread_key);
417 struct osp_txn_info {
418 __u32 oti_current_id;
421 extern struct lu_context_key osp_txn_key;
423 static inline struct osp_txn_info *osp_txn_info(struct lu_context *ctx)
425 struct osp_txn_info *info;
427 info = lu_context_key_get(ctx, &osp_txn_key);
431 extern const struct lu_device_operations osp_lu_ops;
433 static inline int lu_device_is_osp(struct lu_device *d)
435 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &osp_lu_ops);
438 static inline struct osp_device *lu2osp_dev(struct lu_device *d)
440 LASSERT(lu_device_is_osp(d));
441 return container_of0(d, struct osp_device, opd_dt_dev.dd_lu_dev);
444 static inline struct lu_device *osp2lu_dev(struct osp_device *d)
446 return &d->opd_dt_dev.dd_lu_dev;
449 static inline struct osp_device *dt2osp_dev(struct dt_device *d)
451 LASSERT(lu_device_is_osp(&d->dd_lu_dev));
452 return container_of0(d, struct osp_device, opd_dt_dev);
455 static inline struct osp_object *lu2osp_obj(struct lu_object *o)
457 LASSERT(ergo(o != NULL, lu_device_is_osp(o->lo_dev)));
458 return container_of0(o, struct osp_object, opo_obj.do_lu);
461 static inline struct lu_object *osp2lu_obj(struct osp_object *obj)
463 return &obj->opo_obj.do_lu;
466 static inline struct osp_object *osp_obj(const struct lu_object *o)
468 LASSERT(lu_device_is_osp(o->lo_dev));
469 return container_of0(o, struct osp_object, opo_obj.do_lu);
472 static inline struct osp_object *dt2osp_obj(const struct dt_object *d)
474 return osp_obj(&d->do_lu);
477 static inline struct dt_object *osp_object_child(struct osp_object *o)
479 return container_of0(lu_object_next(osp2lu_obj(o)),
480 struct dt_object, do_lu);
483 static inline struct seq_server_site *osp_seq_site(struct osp_device *osp)
485 return osp->opd_dt_dev.dd_lu_dev.ld_site->ld_seq_site;
488 #define osp_init_rpc_lock(lck) mdc_init_rpc_lock(lck)
490 static inline void osp_get_rpc_lock(struct osp_device *osp)
492 struct mdc_rpc_lock *rpc_lock = osp->opd_obd->u.cli.cl_rpc_lock;
494 mdc_get_rpc_lock(rpc_lock, NULL);
497 static inline void osp_put_rpc_lock(struct osp_device *osp)
499 struct mdc_rpc_lock *rpc_lock = osp->opd_obd->u.cli.cl_rpc_lock;
501 mdc_put_rpc_lock(rpc_lock, NULL);
504 static inline int osp_fid_diff(const struct lu_fid *fid1,
505 const struct lu_fid *fid2)
507 /* In 2.6+ ost_idx is packed into IDIF FID, while in 2.4 and 2.5 IDIF
508 * is always FID_SEQ_IDIF(0x100000000ULL), which does not include OST
509 * index in the seq. So we can not compare IDIF FID seq here */
510 if (fid_is_idif(fid1) && fid_is_idif(fid2)) {
511 __u32 ost_idx1 = fid_idif_ost_idx(fid1);
512 __u32 ost_idx2 = fid_idif_ost_idx(fid2);
514 LASSERTF(ost_idx1 == 0 || ost_idx2 == 0 || ost_idx1 == ost_idx2,
515 "fid1: "DFID", fid2: "DFID"\n", PFID(fid1),
518 return fid_idif_id(fid1->f_seq, fid1->f_oid, 0) -
519 fid_idif_id(fid2->f_seq, fid2->f_oid, 0);
522 LASSERTF(fid_seq(fid1) == fid_seq(fid2), "fid1:"DFID
523 ", fid2:"DFID"\n", PFID(fid1), PFID(fid2));
525 return fid_oid(fid1) - fid_oid(fid2);
529 static inline void osp_update_last_fid(struct osp_device *d, struct lu_fid *fid)
531 int diff = osp_fid_diff(fid, &d->opd_last_used_fid);
533 * we might have lost precreated objects due to VBR and precreate
534 * orphans, the gap in objid can be calculated properly only here
538 d->opd_gap_start_fid = d->opd_last_used_fid;
539 d->opd_gap_start_fid.f_oid++;
540 d->opd_gap_count = diff - 1;
541 CDEBUG(D_HA, "Gap in objids: start="DFID", count =%d\n",
542 PFID(&d->opd_gap_start_fid), d->opd_gap_count);
544 d->opd_last_used_fid = *fid;
548 static int osp_fid_end_seq(const struct lu_env *env, struct lu_fid *fid)
550 if (fid_is_idif(fid)) {
551 struct osp_thread_info *info = osp_env_info(env);
552 struct ost_id *oi = &info->osi_oi;
554 fid_to_ostid(fid, oi);
555 return ostid_id(oi) == IDIF_MAX_OID;
557 return fid_oid(fid) == LUSTRE_DATA_SEQ_MAX_WIDTH;
561 static inline int osp_precreate_end_seq_nolock(const struct lu_env *env,
562 struct osp_device *osp)
564 struct lu_fid *fid = &osp->opd_pre_last_created_fid;
566 return osp_fid_end_seq(env, fid);
569 static inline int osp_precreate_end_seq(const struct lu_env *env,
570 struct osp_device *osp)
574 spin_lock(&osp->opd_pre_lock);
575 rc = osp_precreate_end_seq_nolock(env, osp);
576 spin_unlock(&osp->opd_pre_lock);
580 static inline int osp_is_fid_client(struct osp_device *osp)
582 struct obd_import *imp = osp->opd_obd->u.cli.cl_import;
584 return imp->imp_connect_data.ocd_connect_flags & OBD_CONNECT_FID;
587 struct object_update *
588 update_buffer_get_update(struct object_update_request *request,
591 int osp_extend_update_buffer(const struct lu_env *env,
592 struct osp_update_request *our);
594 struct osp_update_request_sub *
595 osp_current_object_update_request(struct osp_update_request *our);
597 int osp_object_update_request_create(struct osp_update_request *our,
600 #define osp_update_rpc_pack(env, name, our, op, ...) \
602 struct object_update *object_update; \
603 size_t max_update_length; \
604 struct osp_update_request_sub *ours; \
608 ours = osp_current_object_update_request(our); \
609 LASSERT(ours != NULL); \
610 max_update_length = ours->ours_req_size - \
611 object_update_request_size(ours->ours_req); \
613 object_update = update_buffer_get_update(ours->ours_req,\
614 ours->ours_req->ourq_count); \
615 ret = out_##name##_pack(env, object_update, \
616 &max_update_length, \
618 if (ret == -E2BIG) { \
620 /* Create new object update request */ \
621 rc1 = osp_object_update_request_create(our, \
622 max_update_length + \
623 offsetof(struct object_update_request, \
624 ourq_updates[0]) + 1); \
632 ours->ours_req->ourq_count++; \
633 object_update->ou_flags |= \
642 static inline bool osp_send_update_thread_running(struct osp_device *osp)
644 return osp->opd_update_thread.t_flags & SVC_RUNNING;
647 static inline bool osp_send_update_thread_stopped(struct osp_device *osp)
649 return osp->opd_update_thread.t_flags & SVC_STOPPED;
652 typedef int (*osp_update_interpreter_t)(const struct lu_env *env,
653 struct object_update_reply *rep,
654 struct ptlrpc_request *req,
655 struct osp_object *obj,
656 void *data, int index, int rc);
659 void osp_update_last_id(struct osp_device *d, u64 objid);
660 extern struct llog_operations osp_mds_ost_orig_logops;
663 int osp_insert_async_request(const struct lu_env *env, enum update_type op,
664 struct osp_object *obj, int count, __u16 *lens,
665 const void **bufs, void *data,
666 osp_update_interpreter_t interpreter);
668 int osp_unplug_async_request(const struct lu_env *env,
669 struct osp_device *osp,
670 struct osp_update_request *update);
671 int osp_trans_update_request_create(struct thandle *th);
672 struct thandle *osp_trans_create(const struct lu_env *env,
673 struct dt_device *d);
674 int osp_trans_start(const struct lu_env *env, struct dt_device *dt,
676 int osp_insert_update_callback(const struct lu_env *env,
677 struct osp_update_request *update,
678 struct osp_object *obj, void *data,
679 osp_update_interpreter_t interpreter);
681 struct osp_update_request *osp_update_request_create(struct dt_device *dt);
682 void osp_update_request_destroy(struct osp_update_request *update);
684 int osp_send_update_thread(void *arg);
685 int osp_check_and_set_rpc_version(struct osp_thandle *oth);
687 void osp_thandle_destroy(struct osp_thandle *oth);
688 static inline void osp_thandle_get(struct osp_thandle *oth)
690 atomic_inc(&oth->ot_refcount);
693 static inline void osp_thandle_put(struct osp_thandle *oth)
695 if (atomic_dec_and_test(&oth->ot_refcount))
696 osp_thandle_destroy(oth);
699 int osp_prep_update_req(const struct lu_env *env, struct obd_import *imp,
700 struct osp_update_request *our,
701 struct ptlrpc_request **reqp);
702 int osp_remote_sync(const struct lu_env *env, struct osp_device *osp,
703 struct osp_update_request *update,
704 struct ptlrpc_request **reqp);
706 struct thandle *osp_get_storage_thandle(const struct lu_env *env,
708 struct osp_device *osp);
709 void osp_trans_callback(const struct lu_env *env,
710 struct osp_thandle *oth, int rc);
712 int osp_attr_get(const struct lu_env *env, struct dt_object *dt,
713 struct lu_attr *attr);
714 int osp_xattr_get(const struct lu_env *env, struct dt_object *dt,
715 struct lu_buf *buf, const char *name);
716 int osp_declare_xattr_set(const struct lu_env *env, struct dt_object *dt,
717 const struct lu_buf *buf, const char *name,
718 int flag, struct thandle *th);
719 int osp_xattr_set(const struct lu_env *env, struct dt_object *dt,
720 const struct lu_buf *buf, const char *name, int fl,
722 int osp_declare_xattr_del(const struct lu_env *env, struct dt_object *dt,
723 const char *name, struct thandle *th);
724 int osp_xattr_del(const struct lu_env *env, struct dt_object *dt,
725 const char *name, struct thandle *th);
727 int osp_trans_stop(const struct lu_env *env, struct dt_device *dt,
729 int osp_trans_cb_add(struct thandle *th, struct dt_txn_commit_cb *dcb);
731 struct dt_it *osp_it_init(const struct lu_env *env, struct dt_object *dt,
733 void osp_it_fini(const struct lu_env *env, struct dt_it *di);
734 int osp_it_get(const struct lu_env *env, struct dt_it *di,
735 const struct dt_key *key);
736 void osp_it_put(const struct lu_env *env, struct dt_it *di);
737 __u64 osp_it_store(const struct lu_env *env, const struct dt_it *di);
738 int osp_it_key_rec(const struct lu_env *env, const struct dt_it *di,
740 int osp_it_next_page(const struct lu_env *env, struct dt_it *di);
741 int osp_oac_init(struct osp_object *obj);
742 /* osp_md_object.c */
743 int osp_md_declare_object_create(const struct lu_env *env,
744 struct dt_object *dt,
745 struct lu_attr *attr,
746 struct dt_allocation_hint *hint,
747 struct dt_object_format *dof,
749 int osp_md_object_create(const struct lu_env *env, struct dt_object *dt,
750 struct lu_attr *attr, struct dt_allocation_hint *hint,
751 struct dt_object_format *dof, struct thandle *th);
752 int osp_md_declare_attr_set(const struct lu_env *env, struct dt_object *dt,
753 const struct lu_attr *attr, struct thandle *th);
754 int osp_md_attr_set(const struct lu_env *env, struct dt_object *dt,
755 const struct lu_attr *attr, struct thandle *th);
756 extern const struct dt_index_operations osp_md_index_ops;
758 /* osp_precreate.c */
759 int osp_init_precreate(struct osp_device *d);
760 int osp_precreate_reserve(const struct lu_env *env, struct osp_device *d);
761 __u64 osp_precreate_get_id(struct osp_device *d);
762 int osp_precreate_get_fid(const struct lu_env *env, struct osp_device *d,
764 void osp_precreate_fini(struct osp_device *d);
765 int osp_object_truncate(const struct lu_env *env, struct dt_object *dt, __u64);
766 void osp_pre_update_status(struct osp_device *d, int rc);
767 void osp_statfs_need_now(struct osp_device *d);
768 int osp_reset_last_used(const struct lu_env *env, struct osp_device *osp);
769 int osp_write_last_oid_seq_files(struct lu_env *env, struct osp_device *osp,
770 struct lu_fid *fid, int sync);
771 int osp_init_pre_fid(struct osp_device *osp);
774 void osp_lprocfs_init(struct osp_device *osp);
777 int osp_sync_declare_add(const struct lu_env *env, struct osp_object *o,
778 llog_op_type type, struct thandle *th);
779 int osp_sync_add(const struct lu_env *env, struct osp_object *o,
780 llog_op_type type, struct thandle *th,
781 const struct lu_attr *attr);
782 int osp_sync_init(const struct lu_env *env, struct osp_device *d);
783 int osp_sync_fini(struct osp_device *d);
784 void __osp_sync_check_for_work(struct osp_device *d);
787 extern struct obd_ops lwp_obd_device_ops;
788 extern struct lu_device_type lwp_device_type;