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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,
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11 * WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
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18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
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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, 2015, 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 __u64 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 objects to precreate next time */
88 int osp_pre_create_count;
89 int osp_pre_min_create_count;
90 int osp_pre_max_create_count;
91 /* whether to increase precreation window next time or not */
92 int osp_pre_create_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; /* may be vmalloc'd */
100 /* Linked to osp_update_request->our_req_list */
101 struct list_head ours_list;
104 struct osp_update_request {
106 /* update request result */
109 /* List of osp_update_request_sub */
110 struct list_head our_req_list;
114 struct list_head our_cb_items;
116 /* points to thandle if this update request belongs to one */
117 struct osp_thandle *our_th;
120 /* protect our_list and flag */
121 spinlock_t our_list_lock;
122 /* linked to the list(ou_list) in osp_updates */
123 struct list_head our_list;
125 __u32 our_req_ready:1;
130 struct list_head ou_list;
132 wait_queue_head_t ou_waitq;
133 /* wait for next updates */
134 __u64 ou_rpc_version;
139 struct dt_device opd_dt_dev;
140 /* corresponded OST index */
143 /* corrsponded MDT index, which will be used when connecting to OST
144 * for validating the connection (see ofd_parse_connect_data) */
146 /* device used to store persistent state (llogs, last ids) */
147 struct obd_export *opd_storage_exp;
148 struct dt_device *opd_storage;
149 struct dt_object *opd_last_used_oid_file;
150 struct dt_object *opd_last_used_seq_file;
152 /* stored persistently in LE format, updated directly to/from disk
153 * and required le64_to_cpu() conversion before use.
154 * Protected by opd_pre_lock */
155 struct lu_fid opd_last_used_fid;
156 struct lu_fid opd_gap_start_fid;
158 /* connection to OST */
159 struct obd_device *opd_obd;
160 struct obd_export *opd_exp;
161 struct obd_uuid opd_cluuid;
162 struct obd_connect_data *opd_connect_data;
164 struct proc_dir_entry *opd_proc_entry;
165 struct lprocfs_stats *opd_stats;
166 /* connection status. */
167 unsigned int opd_new_connection:1,
168 opd_got_disconnected:1,
171 opd_imp_seen_connected:1,
174 /* whether local recovery is completed:
175 * reported via ->ldo_recovery_complete() */
176 int opd_recovery_completed;
178 /* precreate structure for OSP */
179 struct osp_precreate *opd_pre;
180 /* dedicate precreate thread */
181 struct ptlrpc_thread opd_pre_thread;
182 /* thread waits for signals about pool going empty */
183 wait_queue_head_t opd_pre_waitq;
185 /* send update thread */
186 struct osp_updates *opd_update;
187 /* dedicate update thread */
188 struct ptlrpc_thread opd_update_thread;
191 * OST synchronization
193 spinlock_t opd_syn_lock;
194 /* unique generation, to recognize start of new records in the llog */
195 struct llog_gen opd_syn_generation;
196 /* number of changes to sync, used to wake up sync thread */
197 atomic_t opd_syn_changes;
198 /* processing of changes from previous mount is done? */
199 int opd_syn_prev_done;
201 struct ptlrpc_thread opd_syn_thread;
202 wait_queue_head_t opd_syn_waitq;
203 /* list of inflight rpc */
204 struct list_head opd_syn_inflight_list;
205 /* list of remotely committed rpc */
206 struct list_head opd_syn_committed_there;
207 /* number of changes being under sync */
208 int opd_syn_sync_in_progress;
209 /* number of RPCs in flight - flow control */
210 atomic_t opd_syn_rpc_in_flight;
211 int opd_syn_max_rpc_in_flight;
212 /* number of RPC in processing (including non-committed by OST) */
213 atomic_t opd_syn_rpc_in_progress;
214 int opd_syn_max_rpc_in_progress;
215 /* osd api's commit cb control structure */
216 struct dt_txn_callback opd_syn_txn_cb;
217 /* last used change number -- semantically similar to transno */
218 __u64 opd_syn_last_used_id;
219 /* last committed change number -- semantically similar to
221 __u64 opd_syn_last_committed_id;
222 /* last processed (taken from llog) id */
223 volatile __u64 opd_syn_last_processed_id;
224 struct osp_id_tracker *opd_syn_tracker;
225 struct list_head opd_syn_ontrack;
226 /* stop processing new requests until barrier=0 */
227 atomic_t opd_syn_barrier;
228 wait_queue_head_t opd_syn_barrier_waitq;
231 * statfs related fields: OSP maintains it on its own
233 struct obd_statfs opd_statfs;
234 cfs_time_t opd_statfs_fresh_till;
235 struct timer_list opd_statfs_timer;
236 int opd_statfs_update_in_progress;
237 /* how often to update statfs data */
238 int opd_statfs_maxage;
240 struct proc_dir_entry *opd_symlink;
242 /* If the caller wants to do some idempotent async operations on
243 * remote server, it can append the async remote requests on the
244 * osp_device::opd_async_requests via declare() functions, these
245 * requests can be packed together and sent to the remote server
246 * via single OUT RPC later. */
247 struct osp_update_request *opd_async_requests;
248 /* Protect current operations on opd_async_requests. */
249 struct mutex opd_async_requests_mutex;
250 struct list_head opd_async_updates;
251 struct rw_semaphore opd_async_updates_rwsem;
252 atomic_t opd_async_updates_count;
255 #define opd_pre_lock opd_pre->osp_pre_lock
256 #define opd_pre_used_fid opd_pre->osp_pre_used_fid
257 #define opd_pre_last_created_fid opd_pre->osp_pre_last_created_fid
258 #define opd_pre_reserved opd_pre->osp_pre_reserved
259 #define opd_pre_user_waitq opd_pre->osp_pre_user_waitq
260 #define opd_pre_status opd_pre->osp_pre_status
261 #define opd_pre_create_count opd_pre->osp_pre_create_count
262 #define opd_pre_min_create_count opd_pre->osp_pre_min_create_count
263 #define opd_pre_max_create_count opd_pre->osp_pre_max_create_count
264 #define opd_pre_create_slow opd_pre->osp_pre_create_slow
265 #define opd_pre_recovering opd_pre->osp_pre_recovering
267 extern struct kmem_cache *osp_object_kmem;
269 /* The first part of oxe_buf is xattr name, and is '\0' terminated.
270 * The left part is for value, binary mode. */
271 struct osp_xattr_entry {
272 struct list_head oxe_list;
278 unsigned int oxe_exist:1,
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,
291 /* read/write lock for md osp object */
292 struct rw_semaphore opo_sem;
293 const struct lu_env *opo_owner;
294 struct lu_attr opo_attr;
295 struct list_head opo_xattr_list;
296 /* Protect opo_ooa. */
300 extern struct lu_object_operations osp_lu_obj_ops;
301 extern const struct dt_device_operations osp_dt_ops;
302 extern struct dt_object_operations osp_md_obj_ops;
303 extern struct dt_body_operations osp_md_body_ops;
305 struct osp_thread_info {
306 struct lu_buf osi_lb;
307 struct lu_buf osi_lb2;
308 struct lu_fid osi_fid;
309 struct lu_attr osi_attr;
310 struct ost_id osi_oi;
311 struct ost_id osi_oi2;
315 struct llog_rec_hdr osi_hdr;
316 struct llog_unlink64_rec osi_unlink;
317 struct llog_setattr64_rec osi_setattr;
318 struct llog_gen_rec osi_gen;
320 struct llog_cookie osi_cookie;
321 struct llog_catid osi_cid;
322 struct lu_seq_range osi_seq;
323 struct ldlm_res_id osi_resid;
324 struct obdo osi_obdo;
327 /* Iterator for OSP */
330 __u32 ooi_pos_lu_page;
333 int ooi_total_npages;
334 int ooi_valid_npages;
335 unsigned int ooi_swab:1;
337 struct dt_object *ooi_obj;
339 struct page *ooi_cur_page;
340 struct lu_idxpage *ooi_cur_idxpage;
341 struct page **ooi_pages;
344 #define OSP_THANDLE_MAGIC 0x20141214
346 struct thandle ot_super;
348 /* OSP will use this thandle to update last oid*/
349 struct thandle *ot_storage_th;
351 struct list_head ot_commit_dcb_list;
352 struct list_head ot_stop_dcb_list;
353 struct osp_update_request *ot_our;
354 atomic_t ot_refcount;
357 static inline struct osp_thandle *
358 thandle_to_osp_thandle(struct thandle *th)
360 return container_of(th, struct osp_thandle, ot_super);
363 static inline struct osp_update_request *
364 thandle_to_osp_update_request(struct thandle *th)
366 struct osp_thandle *oth;
368 oth = thandle_to_osp_thandle(th);
372 /* The transaction only include the updates on the remote node, and
373 * no local updates at all */
374 static inline bool is_only_remote_trans(struct thandle *th)
376 return th->th_top == NULL;
379 static inline void osp_objid_buf_prep(struct lu_buf *buf, loff_t *off,
380 __u32 *id, int index)
382 /* Note: through id is only 32 bits, it will also write 64 bits
383 * for oid to keep compatibility with the previous version. */
384 buf->lb_buf = (void *)id;
385 buf->lb_len = sizeof(u64);
386 *off = sizeof(u64) * index;
389 static inline void osp_objseq_buf_prep(struct lu_buf *buf, loff_t *off,
390 __u64 *seq, int index)
392 buf->lb_buf = (void *)seq;
393 buf->lb_len = sizeof(u64);
394 *off = sizeof(u64) * index;
397 static inline void osp_buf_prep(struct lu_buf *lb, void *buf, int buf_len)
400 lb->lb_len = buf_len;
403 extern struct lu_context_key osp_thread_key;
405 static inline struct osp_thread_info *osp_env_info(const struct lu_env *env)
407 struct osp_thread_info *info;
409 info = lu_context_key_get(&env->le_ctx, &osp_thread_key);
411 lu_env_refill((struct lu_env *)env);
412 info = lu_context_key_get(&env->le_ctx, &osp_thread_key);
418 struct osp_txn_info {
419 __u64 oti_current_id;
422 extern struct lu_context_key osp_txn_key;
424 static inline struct osp_txn_info *osp_txn_info(struct lu_context *ctx)
426 struct osp_txn_info *info;
428 info = lu_context_key_get(ctx, &osp_txn_key);
432 extern const struct lu_device_operations osp_lu_ops;
434 static inline int lu_device_is_osp(struct lu_device *d)
436 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &osp_lu_ops);
439 static inline struct osp_device *lu2osp_dev(struct lu_device *d)
441 LASSERT(lu_device_is_osp(d));
442 return container_of0(d, struct osp_device, opd_dt_dev.dd_lu_dev);
445 static inline struct lu_device *osp2lu_dev(struct osp_device *d)
447 return &d->opd_dt_dev.dd_lu_dev;
450 static inline struct osp_device *dt2osp_dev(struct dt_device *d)
452 LASSERT(lu_device_is_osp(&d->dd_lu_dev));
453 return container_of0(d, struct osp_device, opd_dt_dev);
456 static inline struct osp_object *lu2osp_obj(struct lu_object *o)
458 LASSERT(ergo(o != NULL, lu_device_is_osp(o->lo_dev)));
459 return container_of0(o, struct osp_object, opo_obj.do_lu);
462 static inline struct lu_object *osp2lu_obj(struct osp_object *obj)
464 return &obj->opo_obj.do_lu;
467 static inline struct osp_object *osp_obj(const struct lu_object *o)
469 LASSERT(lu_device_is_osp(o->lo_dev));
470 return container_of0(o, struct osp_object, opo_obj.do_lu);
473 static inline struct osp_object *dt2osp_obj(const struct dt_object *d)
475 return osp_obj(&d->do_lu);
478 static inline struct dt_object *osp_object_child(struct osp_object *o)
480 return container_of0(lu_object_next(osp2lu_obj(o)),
481 struct dt_object, do_lu);
484 static inline struct seq_server_site *osp_seq_site(struct osp_device *osp)
486 return osp->opd_dt_dev.dd_lu_dev.ld_site->ld_seq_site;
489 #define osp_init_rpc_lock(lck) mdc_init_rpc_lock(lck)
491 static inline void osp_get_rpc_lock(struct osp_device *osp)
493 struct mdc_rpc_lock *rpc_lock = osp->opd_obd->u.cli.cl_rpc_lock;
495 mdc_get_rpc_lock(rpc_lock, NULL);
498 static inline void osp_put_rpc_lock(struct osp_device *osp)
500 struct mdc_rpc_lock *rpc_lock = osp->opd_obd->u.cli.cl_rpc_lock;
502 mdc_put_rpc_lock(rpc_lock, NULL);
505 static inline int osp_fid_diff(const struct lu_fid *fid1,
506 const struct lu_fid *fid2)
508 /* In 2.6+ ost_idx is packed into IDIF FID, while in 2.4 and 2.5 IDIF
509 * is always FID_SEQ_IDIF(0x100000000ULL), which does not include OST
510 * index in the seq. So we can not compare IDIF FID seq here */
511 if (fid_is_idif(fid1) && fid_is_idif(fid2)) {
512 __u32 ost_idx1 = fid_idif_ost_idx(fid1);
513 __u32 ost_idx2 = fid_idif_ost_idx(fid2);
515 LASSERTF(ost_idx1 == 0 || ost_idx2 == 0 || ost_idx1 == ost_idx2,
516 "fid1: "DFID", fid2: "DFID"\n", PFID(fid1),
519 return fid_idif_id(fid1->f_seq, fid1->f_oid, 0) -
520 fid_idif_id(fid2->f_seq, fid2->f_oid, 0);
523 LASSERTF(fid_seq(fid1) == fid_seq(fid2), "fid1:"DFID
524 ", fid2:"DFID"\n", PFID(fid1), PFID(fid2));
526 return fid_oid(fid1) - fid_oid(fid2);
530 static inline void osp_update_last_fid(struct osp_device *d, struct lu_fid *fid)
532 int diff = osp_fid_diff(fid, &d->opd_last_used_fid);
534 * we might have lost precreated objects due to VBR and precreate
535 * orphans, the gap in objid can be calculated properly only here
539 d->opd_gap_start_fid = d->opd_last_used_fid;
540 d->opd_gap_start_fid.f_oid++;
541 d->opd_gap_count = diff - 1;
542 CDEBUG(D_HA, "Gap in objids: start="DFID", count =%d\n",
543 PFID(&d->opd_gap_start_fid), d->opd_gap_count);
545 d->opd_last_used_fid = *fid;
549 static int osp_fid_end_seq(const struct lu_env *env, struct lu_fid *fid)
551 if (fid_is_idif(fid)) {
552 struct osp_thread_info *info = osp_env_info(env);
553 struct ost_id *oi = &info->osi_oi;
555 fid_to_ostid(fid, oi);
556 return ostid_id(oi) == IDIF_MAX_OID;
558 return fid_oid(fid) == LUSTRE_DATA_SEQ_MAX_WIDTH;
562 static inline int osp_precreate_end_seq_nolock(const struct lu_env *env,
563 struct osp_device *osp)
565 struct lu_fid *fid = &osp->opd_pre_last_created_fid;
567 return osp_fid_end_seq(env, fid);
570 static inline int osp_precreate_end_seq(const struct lu_env *env,
571 struct osp_device *osp)
575 spin_lock(&osp->opd_pre_lock);
576 rc = osp_precreate_end_seq_nolock(env, osp);
577 spin_unlock(&osp->opd_pre_lock);
581 static inline int osp_is_fid_client(struct osp_device *osp)
583 struct obd_import *imp = osp->opd_obd->u.cli.cl_import;
585 return imp->imp_connect_data.ocd_connect_flags & OBD_CONNECT_FID;
588 struct object_update *
589 update_buffer_get_update(struct object_update_request *request,
592 int osp_extend_update_buffer(const struct lu_env *env,
593 struct osp_update_request *our);
595 struct osp_update_request_sub *
596 osp_current_object_update_request(struct osp_update_request *our);
598 int osp_object_update_request_create(struct osp_update_request *our,
601 #define osp_update_rpc_pack(env, name, our, op, ...) \
603 struct object_update *object_update; \
604 size_t max_update_length; \
605 struct osp_update_request_sub *ours; \
609 ours = osp_current_object_update_request(our); \
610 LASSERT(ours != NULL); \
611 max_update_length = ours->ours_req_size - \
612 object_update_request_size(ours->ours_req); \
614 object_update = update_buffer_get_update(ours->ours_req,\
615 ours->ours_req->ourq_count); \
616 ret = out_##name##_pack(env, object_update, \
617 &max_update_length, \
619 if (ret == -E2BIG) { \
621 /* Create new object update request */ \
622 rc1 = osp_object_update_request_create(our, \
623 max_update_length + \
624 offsetof(struct object_update_request, \
625 ourq_updates[0]) + 1); \
633 ours->ours_req->ourq_count++; \
634 (our)->our_update_nr++; \
635 object_update->ou_batchid = \
637 object_update->ou_flags |= \
646 static inline bool osp_send_update_thread_running(struct osp_device *osp)
648 return osp->opd_update_thread.t_flags & SVC_RUNNING;
651 static inline bool osp_send_update_thread_stopped(struct osp_device *osp)
653 return osp->opd_update_thread.t_flags & SVC_STOPPED;
656 typedef int (*osp_update_interpreter_t)(const struct lu_env *env,
657 struct object_update_reply *rep,
658 struct ptlrpc_request *req,
659 struct osp_object *obj,
660 void *data, int index, int rc);
663 void osp_update_last_id(struct osp_device *d, u64 objid);
664 extern struct llog_operations osp_mds_ost_orig_logops;
667 int osp_insert_async_request(const struct lu_env *env, enum update_type op,
668 struct osp_object *obj, int count, __u16 *lens,
669 const void **bufs, void *data, __u32 repsize,
670 osp_update_interpreter_t interpreter);
672 int osp_unplug_async_request(const struct lu_env *env,
673 struct osp_device *osp,
674 struct osp_update_request *update);
675 int osp_trans_update_request_create(struct thandle *th);
676 struct thandle *osp_trans_create(const struct lu_env *env,
677 struct dt_device *d);
678 int osp_trans_start(const struct lu_env *env, struct dt_device *dt,
680 int osp_insert_update_callback(const struct lu_env *env,
681 struct osp_update_request *update,
682 struct osp_object *obj, void *data,
683 osp_update_interpreter_t interpreter);
685 struct osp_update_request *osp_update_request_create(struct dt_device *dt);
686 void osp_update_request_destroy(struct osp_update_request *update);
688 int osp_send_update_thread(void *arg);
689 int osp_check_and_set_rpc_version(struct osp_thandle *oth,
690 struct osp_object *obj);
692 void osp_thandle_destroy(struct osp_thandle *oth);
693 static inline void osp_thandle_get(struct osp_thandle *oth)
695 atomic_inc(&oth->ot_refcount);
698 static inline void osp_thandle_put(struct osp_thandle *oth)
700 if (atomic_dec_and_test(&oth->ot_refcount))
701 osp_thandle_destroy(oth);
704 int osp_prep_update_req(const struct lu_env *env, struct obd_import *imp,
705 struct osp_update_request *our,
706 struct ptlrpc_request **reqp);
707 int osp_remote_sync(const struct lu_env *env, struct osp_device *osp,
708 struct osp_update_request *update,
709 struct ptlrpc_request **reqp);
711 struct thandle *osp_get_storage_thandle(const struct lu_env *env,
713 struct osp_device *osp);
714 void osp_trans_callback(const struct lu_env *env,
715 struct osp_thandle *oth, int rc);
716 void osp_invalidate_request(struct osp_device *osp);
718 int osp_attr_get(const struct lu_env *env, struct dt_object *dt,
719 struct lu_attr *attr);
720 int osp_xattr_get(const struct lu_env *env, struct dt_object *dt,
721 struct lu_buf *buf, const char *name);
722 int osp_declare_xattr_set(const struct lu_env *env, struct dt_object *dt,
723 const struct lu_buf *buf, const char *name,
724 int flag, struct thandle *th);
725 int osp_xattr_set(const struct lu_env *env, struct dt_object *dt,
726 const struct lu_buf *buf, const char *name, int fl,
728 int osp_declare_xattr_del(const struct lu_env *env, struct dt_object *dt,
729 const char *name, struct thandle *th);
730 int osp_xattr_del(const struct lu_env *env, struct dt_object *dt,
731 const char *name, struct thandle *th);
732 int osp_invalidate(const struct lu_env *env, struct dt_object *dt);
734 int osp_trans_stop(const struct lu_env *env, struct dt_device *dt,
736 int osp_trans_cb_add(struct thandle *th, struct dt_txn_commit_cb *dcb);
738 struct dt_it *osp_it_init(const struct lu_env *env, struct dt_object *dt,
740 void osp_it_fini(const struct lu_env *env, struct dt_it *di);
741 int osp_it_get(const struct lu_env *env, struct dt_it *di,
742 const struct dt_key *key);
743 void osp_it_put(const struct lu_env *env, struct dt_it *di);
744 __u64 osp_it_store(const struct lu_env *env, const struct dt_it *di);
745 int osp_it_key_rec(const struct lu_env *env, const struct dt_it *di,
747 int osp_it_next_page(const struct lu_env *env, struct dt_it *di);
748 /* osp_md_object.c */
749 int osp_md_declare_object_create(const struct lu_env *env,
750 struct dt_object *dt,
751 struct lu_attr *attr,
752 struct dt_allocation_hint *hint,
753 struct dt_object_format *dof,
755 int osp_md_object_create(const struct lu_env *env, struct dt_object *dt,
756 struct lu_attr *attr, struct dt_allocation_hint *hint,
757 struct dt_object_format *dof, struct thandle *th);
758 int osp_md_declare_attr_set(const struct lu_env *env, struct dt_object *dt,
759 const struct lu_attr *attr, struct thandle *th);
760 int osp_md_attr_set(const struct lu_env *env, struct dt_object *dt,
761 const struct lu_attr *attr, struct thandle *th);
762 extern const struct dt_index_operations osp_md_index_ops;
764 /* osp_precreate.c */
765 int osp_init_precreate(struct osp_device *d);
766 int osp_precreate_reserve(const struct lu_env *env, struct osp_device *d);
767 __u64 osp_precreate_get_id(struct osp_device *d);
768 int osp_precreate_get_fid(const struct lu_env *env, struct osp_device *d,
770 void osp_precreate_fini(struct osp_device *d);
771 int osp_object_truncate(const struct lu_env *env, struct dt_object *dt, __u64);
772 void osp_pre_update_status(struct osp_device *d, int rc);
773 void osp_statfs_need_now(struct osp_device *d);
774 int osp_reset_last_used(const struct lu_env *env, struct osp_device *osp);
775 int osp_write_last_oid_seq_files(struct lu_env *env, struct osp_device *osp,
776 struct lu_fid *fid, int sync);
777 int osp_init_pre_fid(struct osp_device *osp);
780 void osp_lprocfs_init(struct osp_device *osp);
783 int osp_sync_declare_add(const struct lu_env *env, struct osp_object *o,
784 llog_op_type type, struct thandle *th);
785 int osp_sync_add(const struct lu_env *env, struct osp_object *o,
786 llog_op_type type, struct thandle *th,
787 const struct lu_attr *attr);
788 int osp_sync_init(const struct lu_env *env, struct osp_device *d);
789 int osp_sync_fini(struct osp_device *d);
790 void __osp_sync_check_for_work(struct osp_device *d);
793 extern struct obd_ops lwp_obd_device_ops;
794 extern struct lu_device_type lwp_device_type;