/* * GPL HEADER START * * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 only, * as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License version 2 for more details (a copy is included * in the LICENSE file that accompanied this code). * * You should have received a copy of the GNU General Public License * version 2 along with this program; If not, see * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * * GPL HEADER END */ /* * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. * Use is subject to license terms. * * Copyright (c) 2012, 2015, Intel Corporation. */ /* * This file is part of Lustre, http://www.lustre.org/ * Lustre is a trademark of Sun Microsystems, Inc. * * lustre/osp/osp_internal.h * * Author: Alex Zhuravlev */ #ifndef _OSP_INTERNAL_H #define _OSP_INTERNAL_H #include #include #include #include #include #include #include #include /* * Infrastructure to support tracking of last committed llog record */ struct osp_id_tracker { spinlock_t otr_lock; __u64 otr_next_id; __u64 otr_committed_id; /* callback is register once per diskfs -- that's the whole point */ struct dt_txn_callback otr_tx_cb; /* single node can run many clusters */ struct list_head otr_wakeup_list; struct list_head otr_list; /* underlying shared device */ struct dt_device *otr_dev; /* how many users of this tracker */ atomic_t otr_refcount; }; struct osp_precreate { /* * Precreation pool */ spinlock_t osp_pre_lock; /* last fid to assign in creation */ struct lu_fid osp_pre_used_fid; /* last created id OST reported, next-created - available id's */ struct lu_fid osp_pre_last_created_fid; /* how many ids are reserved in declare, we shouldn't block in create */ __u64 osp_pre_reserved; /* consumers (who needs new ids) wait here */ wait_queue_head_t osp_pre_user_waitq; /* current precreation status: working, failed, stopping? */ int osp_pre_status; /* how many objects to precreate next time */ int osp_pre_create_count; int osp_pre_min_create_count; int osp_pre_max_create_count; /* whether to increase precreation window next time or not */ int osp_pre_create_slow; /* cleaning up orphans or recreating missing objects */ int osp_pre_recovering; }; struct osp_update_request_sub { struct object_update_request *ours_req; /* may be vmalloc'd */ size_t ours_req_size; /* Linked to osp_update_request->our_req_list */ struct list_head ours_list; }; struct osp_update_request { int our_flags; /* update request result */ int our_rc; /* List of osp_update_request_sub */ struct list_head our_req_list; int our_req_nr; int our_update_nr; struct list_head our_cb_items; /* points to thandle if this update request belongs to one */ struct osp_thandle *our_th; __u64 our_version; /* protect our_list and flag */ spinlock_t our_list_lock; /* linked to the list(ou_list) in osp_updates */ struct list_head our_list; __u32 our_batchid; __u32 our_req_ready:1; }; struct osp_updates { struct list_head ou_list; spinlock_t ou_lock; wait_queue_head_t ou_waitq; /* wait for next updates */ __u64 ou_rpc_version; __u64 ou_version; }; struct osp_device { struct dt_device opd_dt_dev; /* corresponded OST index */ int opd_index; /* corrsponded MDT index, which will be used when connecting to OST * for validating the connection (see ofd_parse_connect_data) */ int opd_group; /* device used to store persistent state (llogs, last ids) */ struct obd_export *opd_storage_exp; struct dt_device *opd_storage; struct dt_object *opd_last_used_oid_file; struct dt_object *opd_last_used_seq_file; /* stored persistently in LE format, updated directly to/from disk * and required le64_to_cpu() conversion before use. * Protected by opd_pre_lock */ struct lu_fid opd_last_used_fid; struct lu_fid opd_gap_start_fid; int opd_gap_count; /* connection to OST */ struct obd_device *opd_obd; struct obd_export *opd_exp; struct obd_uuid opd_cluuid; struct obd_connect_data *opd_connect_data; int opd_connects; struct proc_dir_entry *opd_proc_entry; struct lprocfs_stats *opd_stats; /* connection status. */ unsigned int opd_new_connection:1, opd_got_disconnected:1, opd_imp_connected:1, opd_imp_active:1, opd_imp_seen_connected:1, opd_connect_mdt:1; /* whether local recovery is completed: * reported via ->ldo_recovery_complete() */ int opd_recovery_completed; /* precreate structure for OSP */ struct osp_precreate *opd_pre; /* dedicate precreate thread */ struct ptlrpc_thread opd_pre_thread; /* thread waits for signals about pool going empty */ wait_queue_head_t opd_pre_waitq; /* send update thread */ struct osp_updates *opd_update; /* dedicate update thread */ struct ptlrpc_thread opd_update_thread; /* * OST synchronization */ spinlock_t opd_syn_lock; /* unique generation, to recognize start of new records in the llog */ struct llog_gen opd_syn_generation; /* number of changes to sync, used to wake up sync thread */ atomic_t opd_syn_changes; /* processing of changes from previous mount is done? */ int opd_syn_prev_done; /* found records */ struct ptlrpc_thread opd_syn_thread; wait_queue_head_t opd_syn_waitq; /* list of inflight rpc */ struct list_head opd_syn_inflight_list; /* list of remotely committed rpc */ struct list_head opd_syn_committed_there; /* number of changes being under sync */ int opd_syn_sync_in_progress; /* number of RPCs in flight - flow control */ atomic_t opd_syn_rpc_in_flight; int opd_syn_max_rpc_in_flight; /* number of RPC in processing (including non-committed by OST) */ atomic_t opd_syn_rpc_in_progress; int opd_syn_max_rpc_in_progress; /* osd api's commit cb control structure */ struct dt_txn_callback opd_syn_txn_cb; /* last used change number -- semantically similar to transno */ __u64 opd_syn_last_used_id; /* last committed change number -- semantically similar to * last_committed */ __u64 opd_syn_last_committed_id; /* last processed (taken from llog) id */ volatile __u64 opd_syn_last_processed_id; struct osp_id_tracker *opd_syn_tracker; struct list_head opd_syn_ontrack; /* stop processing new requests until barrier=0 */ atomic_t opd_syn_barrier; wait_queue_head_t opd_syn_barrier_waitq; /* * statfs related fields: OSP maintains it on its own */ struct obd_statfs opd_statfs; cfs_time_t opd_statfs_fresh_till; struct timer_list opd_statfs_timer; int opd_statfs_update_in_progress; /* how often to update statfs data */ int opd_statfs_maxage; struct proc_dir_entry *opd_symlink; /* If the caller wants to do some idempotent async operations on * remote server, it can append the async remote requests on the * osp_device::opd_async_requests via declare() functions, these * requests can be packed together and sent to the remote server * via single OUT RPC later. */ struct osp_update_request *opd_async_requests; /* Protect current operations on opd_async_requests. */ struct mutex opd_async_requests_mutex; struct list_head opd_async_updates; struct rw_semaphore opd_async_updates_rwsem; atomic_t opd_async_updates_count; }; #define opd_pre_lock opd_pre->osp_pre_lock #define opd_pre_used_fid opd_pre->osp_pre_used_fid #define opd_pre_last_created_fid opd_pre->osp_pre_last_created_fid #define opd_pre_reserved opd_pre->osp_pre_reserved #define opd_pre_user_waitq opd_pre->osp_pre_user_waitq #define opd_pre_status opd_pre->osp_pre_status #define opd_pre_create_count opd_pre->osp_pre_create_count #define opd_pre_min_create_count opd_pre->osp_pre_min_create_count #define opd_pre_max_create_count opd_pre->osp_pre_max_create_count #define opd_pre_create_slow opd_pre->osp_pre_create_slow #define opd_pre_recovering opd_pre->osp_pre_recovering extern struct kmem_cache *osp_object_kmem; /* The first part of oxe_buf is xattr name, and is '\0' terminated. * The left part is for value, binary mode. */ struct osp_xattr_entry { struct list_head oxe_list; atomic_t oxe_ref; void *oxe_value; size_t oxe_buflen; size_t oxe_namelen; size_t oxe_vallen; unsigned int oxe_exist:1, oxe_ready:1; char oxe_buf[0]; }; struct osp_object_attr { struct lu_attr ooa_attr; struct list_head ooa_xattr_list; }; /* this is a top object */ struct osp_object { struct lu_object_header opo_header; struct dt_object opo_obj; unsigned int opo_reserved:1, opo_non_exist:1, opo_stale:1; /* read/write lock for md osp object */ struct rw_semaphore opo_sem; const struct lu_env *opo_owner; struct osp_object_attr *opo_ooa; /* Protect opo_ooa. */ spinlock_t opo_lock; }; extern struct lu_object_operations osp_lu_obj_ops; extern const struct dt_device_operations osp_dt_ops; extern struct dt_object_operations osp_md_obj_ops; extern struct dt_body_operations osp_md_body_ops; struct osp_thread_info { struct lu_buf osi_lb; struct lu_buf osi_lb2; struct lu_fid osi_fid; struct lu_attr osi_attr; struct ost_id osi_oi; struct ost_id osi_oi2; u64 osi_id; loff_t osi_off; union { struct llog_rec_hdr osi_hdr; struct llog_unlink64_rec osi_unlink; struct llog_setattr64_rec osi_setattr; struct llog_gen_rec osi_gen; }; struct llog_cookie osi_cookie; struct llog_catid osi_cid; struct lu_seq_range osi_seq; struct ldlm_res_id osi_resid; struct obdo osi_obdo; }; /* Iterator for OSP */ struct osp_it { __u32 ooi_pos_page; __u32 ooi_pos_lu_page; __u32 ooi_attr; int ooi_pos_ent; int ooi_total_npages; int ooi_valid_npages; unsigned int ooi_swab:1; __u64 ooi_next; struct dt_object *ooi_obj; void *ooi_ent; struct page *ooi_cur_page; struct lu_idxpage *ooi_cur_idxpage; struct page **ooi_pages; }; #define OSP_THANDLE_MAGIC 0x20141214 struct osp_thandle { struct thandle ot_super; /* OSP will use this thandle to update last oid*/ struct thandle *ot_storage_th; __u32 ot_magic; struct list_head ot_commit_dcb_list; struct list_head ot_stop_dcb_list; struct osp_update_request *ot_our; atomic_t ot_refcount; }; static inline struct osp_thandle * thandle_to_osp_thandle(struct thandle *th) { return container_of(th, struct osp_thandle, ot_super); } static inline struct osp_update_request * thandle_to_osp_update_request(struct thandle *th) { struct osp_thandle *oth; oth = thandle_to_osp_thandle(th); return oth->ot_our; } /* The transaction only include the updates on the remote node, and * no local updates at all */ static inline bool is_only_remote_trans(struct thandle *th) { return th->th_top == NULL; } static inline void osp_objid_buf_prep(struct lu_buf *buf, loff_t *off, __u32 *id, int index) { /* Note: through id is only 32 bits, it will also write 64 bits * for oid to keep compatibility with the previous version. */ buf->lb_buf = (void *)id; buf->lb_len = sizeof(u64); *off = sizeof(u64) * index; } static inline void osp_objseq_buf_prep(struct lu_buf *buf, loff_t *off, __u64 *seq, int index) { buf->lb_buf = (void *)seq; buf->lb_len = sizeof(u64); *off = sizeof(u64) * index; } static inline void osp_buf_prep(struct lu_buf *lb, void *buf, int buf_len) { lb->lb_buf = buf; lb->lb_len = buf_len; } extern struct lu_context_key osp_thread_key; static inline struct osp_thread_info *osp_env_info(const struct lu_env *env) { struct osp_thread_info *info; info = lu_context_key_get(&env->le_ctx, &osp_thread_key); if (info == NULL) { lu_env_refill((struct lu_env *)env); info = lu_context_key_get(&env->le_ctx, &osp_thread_key); } LASSERT(info); return info; } struct osp_txn_info { __u64 oti_current_id; }; extern struct lu_context_key osp_txn_key; static inline struct osp_txn_info *osp_txn_info(struct lu_context *ctx) { struct osp_txn_info *info; info = lu_context_key_get(ctx, &osp_txn_key); return info; } extern const struct lu_device_operations osp_lu_ops; static inline int lu_device_is_osp(struct lu_device *d) { return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &osp_lu_ops); } static inline struct osp_device *lu2osp_dev(struct lu_device *d) { LASSERT(lu_device_is_osp(d)); return container_of0(d, struct osp_device, opd_dt_dev.dd_lu_dev); } static inline struct lu_device *osp2lu_dev(struct osp_device *d) { return &d->opd_dt_dev.dd_lu_dev; } static inline struct osp_device *dt2osp_dev(struct dt_device *d) { LASSERT(lu_device_is_osp(&d->dd_lu_dev)); return container_of0(d, struct osp_device, opd_dt_dev); } static inline struct osp_object *lu2osp_obj(struct lu_object *o) { LASSERT(ergo(o != NULL, lu_device_is_osp(o->lo_dev))); return container_of0(o, struct osp_object, opo_obj.do_lu); } static inline struct lu_object *osp2lu_obj(struct osp_object *obj) { return &obj->opo_obj.do_lu; } static inline struct osp_object *osp_obj(const struct lu_object *o) { LASSERT(lu_device_is_osp(o->lo_dev)); return container_of0(o, struct osp_object, opo_obj.do_lu); } static inline struct osp_object *dt2osp_obj(const struct dt_object *d) { return osp_obj(&d->do_lu); } static inline struct dt_object *osp_object_child(struct osp_object *o) { return container_of0(lu_object_next(osp2lu_obj(o)), struct dt_object, do_lu); } static inline struct seq_server_site *osp_seq_site(struct osp_device *osp) { return osp->opd_dt_dev.dd_lu_dev.ld_site->ld_seq_site; } #define osp_init_rpc_lock(lck) mdc_init_rpc_lock(lck) static inline void osp_get_rpc_lock(struct osp_device *osp) { struct mdc_rpc_lock *rpc_lock = osp->opd_obd->u.cli.cl_rpc_lock; mdc_get_rpc_lock(rpc_lock, NULL); } static inline void osp_put_rpc_lock(struct osp_device *osp) { struct mdc_rpc_lock *rpc_lock = osp->opd_obd->u.cli.cl_rpc_lock; mdc_put_rpc_lock(rpc_lock, NULL); } static inline int osp_fid_diff(const struct lu_fid *fid1, const struct lu_fid *fid2) { /* In 2.6+ ost_idx is packed into IDIF FID, while in 2.4 and 2.5 IDIF * is always FID_SEQ_IDIF(0x100000000ULL), which does not include OST * index in the seq. So we can not compare IDIF FID seq here */ if (fid_is_idif(fid1) && fid_is_idif(fid2)) { __u32 ost_idx1 = fid_idif_ost_idx(fid1); __u32 ost_idx2 = fid_idif_ost_idx(fid2); LASSERTF(ost_idx1 == 0 || ost_idx2 == 0 || ost_idx1 == ost_idx2, "fid1: "DFID", fid2: "DFID"\n", PFID(fid1), PFID(fid2)); return fid_idif_id(fid1->f_seq, fid1->f_oid, 0) - fid_idif_id(fid2->f_seq, fid2->f_oid, 0); } LASSERTF(fid_seq(fid1) == fid_seq(fid2), "fid1:"DFID ", fid2:"DFID"\n", PFID(fid1), PFID(fid2)); return fid_oid(fid1) - fid_oid(fid2); } static inline void osp_update_last_fid(struct osp_device *d, struct lu_fid *fid) { int diff = osp_fid_diff(fid, &d->opd_last_used_fid); /* * we might have lost precreated objects due to VBR and precreate * orphans, the gap in objid can be calculated properly only here */ if (diff > 0) { if (diff > 1) { d->opd_gap_start_fid = d->opd_last_used_fid; d->opd_gap_start_fid.f_oid++; d->opd_gap_count = diff - 1; CDEBUG(D_HA, "Gap in objids: start="DFID", count =%d\n", PFID(&d->opd_gap_start_fid), d->opd_gap_count); } d->opd_last_used_fid = *fid; } } static int osp_fid_end_seq(const struct lu_env *env, struct lu_fid *fid) { if (fid_is_idif(fid)) { struct osp_thread_info *info = osp_env_info(env); struct ost_id *oi = &info->osi_oi; fid_to_ostid(fid, oi); return ostid_id(oi) == IDIF_MAX_OID; } else { return fid_oid(fid) == LUSTRE_DATA_SEQ_MAX_WIDTH; } } static inline int osp_precreate_end_seq_nolock(const struct lu_env *env, struct osp_device *osp) { struct lu_fid *fid = &osp->opd_pre_last_created_fid; return osp_fid_end_seq(env, fid); } static inline int osp_precreate_end_seq(const struct lu_env *env, struct osp_device *osp) { int rc; spin_lock(&osp->opd_pre_lock); rc = osp_precreate_end_seq_nolock(env, osp); spin_unlock(&osp->opd_pre_lock); return rc; } static inline int osp_is_fid_client(struct osp_device *osp) { struct obd_import *imp = osp->opd_obd->u.cli.cl_import; return imp->imp_connect_data.ocd_connect_flags & OBD_CONNECT_FID; } struct object_update * update_buffer_get_update(struct object_update_request *request, unsigned int index); int osp_extend_update_buffer(const struct lu_env *env, struct osp_update_request *our); struct osp_update_request_sub * osp_current_object_update_request(struct osp_update_request *our); int osp_object_update_request_create(struct osp_update_request *our, size_t size); #define osp_update_rpc_pack(env, name, our, op, ...) \ ({ \ struct object_update *object_update; \ size_t max_update_length; \ struct osp_update_request_sub *ours; \ int ret; \ \ while (1) { \ ours = osp_current_object_update_request(our); \ LASSERT(ours != NULL); \ max_update_length = ours->ours_req_size - \ object_update_request_size(ours->ours_req); \ \ object_update = update_buffer_get_update(ours->ours_req,\ ours->ours_req->ourq_count); \ ret = out_##name##_pack(env, object_update, \ &max_update_length, \ __VA_ARGS__); \ if (ret == -E2BIG) { \ int rc1; \ /* Create new object update request */ \ rc1 = osp_object_update_request_create(our, \ max_update_length + \ offsetof(struct object_update_request, \ ourq_updates[0]) + 1); \ if (rc1 != 0) { \ ret = rc1; \ break; \ } \ continue; \ } else { \ if (ret == 0) { \ ours->ours_req->ourq_count++; \ (our)->our_update_nr++; \ object_update->ou_batchid = \ (our)->our_batchid;\ object_update->ou_flags |= \ (our)->our_flags; \ } \ break; \ } \ } \ ret; \ }) static inline bool osp_send_update_thread_running(struct osp_device *osp) { return osp->opd_update_thread.t_flags & SVC_RUNNING; } static inline bool osp_send_update_thread_stopped(struct osp_device *osp) { return osp->opd_update_thread.t_flags & SVC_STOPPED; } typedef int (*osp_update_interpreter_t)(const struct lu_env *env, struct object_update_reply *rep, struct ptlrpc_request *req, struct osp_object *obj, void *data, int index, int rc); /* osp_dev.c */ void osp_update_last_id(struct osp_device *d, u64 objid); extern struct llog_operations osp_mds_ost_orig_logops; /* osp_trans.c */ int osp_insert_async_request(const struct lu_env *env, enum update_type op, struct osp_object *obj, int count, __u16 *lens, const void **bufs, void *data, __u32 repsize, osp_update_interpreter_t interpreter); int osp_unplug_async_request(const struct lu_env *env, struct osp_device *osp, struct osp_update_request *update); int osp_trans_update_request_create(struct thandle *th); struct thandle *osp_trans_create(const struct lu_env *env, struct dt_device *d); int osp_trans_start(const struct lu_env *env, struct dt_device *dt, struct thandle *th); int osp_insert_update_callback(const struct lu_env *env, struct osp_update_request *update, struct osp_object *obj, void *data, osp_update_interpreter_t interpreter); struct osp_update_request *osp_update_request_create(struct dt_device *dt); void osp_update_request_destroy(struct osp_update_request *update); int osp_send_update_thread(void *arg); int osp_check_and_set_rpc_version(struct osp_thandle *oth, struct osp_object *obj); void osp_thandle_destroy(struct osp_thandle *oth); static inline void osp_thandle_get(struct osp_thandle *oth) { atomic_inc(&oth->ot_refcount); } static inline void osp_thandle_put(struct osp_thandle *oth) { if (atomic_dec_and_test(&oth->ot_refcount)) osp_thandle_destroy(oth); } int osp_prep_update_req(const struct lu_env *env, struct obd_import *imp, struct osp_update_request *our, struct ptlrpc_request **reqp); int osp_remote_sync(const struct lu_env *env, struct osp_device *osp, struct osp_update_request *update, struct ptlrpc_request **reqp); struct thandle *osp_get_storage_thandle(const struct lu_env *env, struct thandle *th, struct osp_device *osp); void osp_trans_callback(const struct lu_env *env, struct osp_thandle *oth, int rc); void osp_invalidate_request(struct osp_device *osp); /* osp_object.c */ int osp_attr_get(const struct lu_env *env, struct dt_object *dt, struct lu_attr *attr); int osp_xattr_get(const struct lu_env *env, struct dt_object *dt, struct lu_buf *buf, const char *name); int osp_declare_xattr_set(const struct lu_env *env, struct dt_object *dt, const struct lu_buf *buf, const char *name, int flag, struct thandle *th); int osp_xattr_set(const struct lu_env *env, struct dt_object *dt, const struct lu_buf *buf, const char *name, int fl, struct thandle *th); int osp_declare_xattr_del(const struct lu_env *env, struct dt_object *dt, const char *name, struct thandle *th); int osp_xattr_del(const struct lu_env *env, struct dt_object *dt, const char *name, struct thandle *th); int osp_trans_stop(const struct lu_env *env, struct dt_device *dt, struct thandle *th); int osp_trans_cb_add(struct thandle *th, struct dt_txn_commit_cb *dcb); struct dt_it *osp_it_init(const struct lu_env *env, struct dt_object *dt, __u32 attr); void osp_it_fini(const struct lu_env *env, struct dt_it *di); int osp_it_get(const struct lu_env *env, struct dt_it *di, const struct dt_key *key); void osp_it_put(const struct lu_env *env, struct dt_it *di); __u64 osp_it_store(const struct lu_env *env, const struct dt_it *di); int osp_it_key_rec(const struct lu_env *env, const struct dt_it *di, void *key_rec); int osp_it_next_page(const struct lu_env *env, struct dt_it *di); int osp_oac_init(struct osp_object *obj); /* osp_md_object.c */ int osp_md_declare_object_create(const struct lu_env *env, struct dt_object *dt, struct lu_attr *attr, struct dt_allocation_hint *hint, struct dt_object_format *dof, struct thandle *th); int osp_md_object_create(const struct lu_env *env, struct dt_object *dt, struct lu_attr *attr, struct dt_allocation_hint *hint, struct dt_object_format *dof, struct thandle *th); int osp_md_declare_attr_set(const struct lu_env *env, struct dt_object *dt, const struct lu_attr *attr, struct thandle *th); int osp_md_attr_set(const struct lu_env *env, struct dt_object *dt, const struct lu_attr *attr, struct thandle *th); extern const struct dt_index_operations osp_md_index_ops; /* osp_precreate.c */ int osp_init_precreate(struct osp_device *d); int osp_precreate_reserve(const struct lu_env *env, struct osp_device *d); __u64 osp_precreate_get_id(struct osp_device *d); int osp_precreate_get_fid(const struct lu_env *env, struct osp_device *d, struct lu_fid *fid); void osp_precreate_fini(struct osp_device *d); int osp_object_truncate(const struct lu_env *env, struct dt_object *dt, __u64); void osp_pre_update_status(struct osp_device *d, int rc); void osp_statfs_need_now(struct osp_device *d); int osp_reset_last_used(const struct lu_env *env, struct osp_device *osp); int osp_write_last_oid_seq_files(struct lu_env *env, struct osp_device *osp, struct lu_fid *fid, int sync); int osp_init_pre_fid(struct osp_device *osp); /* lproc_osp.c */ void osp_lprocfs_init(struct osp_device *osp); /* osp_sync.c */ int osp_sync_declare_add(const struct lu_env *env, struct osp_object *o, llog_op_type type, struct thandle *th); int osp_sync_add(const struct lu_env *env, struct osp_object *o, llog_op_type type, struct thandle *th, const struct lu_attr *attr); int osp_sync_init(const struct lu_env *env, struct osp_device *d); int osp_sync_fini(struct osp_device *d); void __osp_sync_check_for_work(struct osp_device *d); /* lwp_dev.c */ extern struct obd_ops lwp_obd_device_ops; extern struct lu_device_type lwp_device_type; #endif