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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 <dt_object.h>
46 #include <lustre_fid.h>
49 struct dt_device opd_dt_dev;
50 /* corresponded OST index */
52 /* device used to store persistent state (llogs, last ids) */
53 struct obd_export *opd_storage_exp;
54 struct dt_device *opd_storage;
55 struct dt_object *opd_last_used_file;
57 /* stored persistently in LE format, updated directly to/from disk
58 * and required le64_to_cpu() conversion before use.
59 * Protected by opd_pre_lock */
60 volatile obd_id opd_last_used_id;
64 /* connection to OST */
65 struct obd_device *opd_obd;
66 struct obd_export *opd_exp;
67 struct obd_uuid opd_cluuid;
68 struct obd_connect_data *opd_connect_data;
70 cfs_proc_dir_entry_t *opd_proc_entry;
71 struct lprocfs_stats *opd_stats;
72 /* connection status. */
73 int opd_new_connection;
74 int opd_got_disconnected;
75 int opd_imp_connected;
77 int opd_imp_seen_connected:1;
79 /* whether local recovery is completed:
80 * reported via ->ldo_recovery_complete() */
81 int opd_recovery_completed;
86 cfs_spinlock_t opd_pre_lock;
87 /* next id to assign in creation */
89 /* last created id OST reported, next-created - available id's */
90 __u64 opd_pre_last_created;
91 /* how many ids are reserved in declare, we shouldn't block in create */
92 __u64 opd_pre_reserved;
93 /* dedicate precreate thread */
94 struct ptlrpc_thread opd_pre_thread;
95 /* thread waits for signals about pool going empty */
96 cfs_waitq_t opd_pre_waitq;
97 /* consumers (who needs new ids) wait here */
98 cfs_waitq_t opd_pre_user_waitq;
99 /* current precreation status: working, failed, stopping? */
101 /* how many to precreate next time */
102 int opd_pre_grow_count;
103 int opd_pre_min_grow_count;
104 int opd_pre_max_grow_count;
105 /* whether to grow precreation window next time or not */
106 int opd_pre_grow_slow;
109 * statfs related fields: OSP maintains it on its own
111 struct obd_statfs opd_statfs;
112 cfs_time_t opd_statfs_fresh_till;
113 cfs_timer_t opd_statfs_timer;
114 int opd_statfs_update_in_progress;
115 /* how often to update statfs data */
116 int opd_statfs_maxage;
118 cfs_proc_dir_entry_t *opd_symlink;
121 extern cfs_mem_cache_t *osp_object_kmem;
123 /* this is a top object */
125 struct lu_object_header opo_header;
126 struct dt_object opo_obj;
130 extern struct lu_object_operations osp_lu_obj_ops;
132 struct osp_thread_info {
133 struct lu_buf osi_lb;
134 struct lu_fid osi_fid;
135 struct lu_attr osi_attr;
136 struct ost_id osi_oi;
141 static inline void osp_objid_buf_prep(struct osp_thread_info *osi,
142 struct osp_device *d, int index)
144 osi->osi_lb.lb_buf = (void *)&d->opd_last_used_id;
145 osi->osi_lb.lb_len = sizeof(d->opd_last_used_id);
146 osi->osi_off = sizeof(d->opd_last_used_id) * index;
149 extern struct lu_context_key osp_thread_key;
151 static inline struct osp_thread_info *osp_env_info(const struct lu_env *env)
153 struct osp_thread_info *info;
155 info = lu_context_key_get(&env->le_ctx, &osp_thread_key);
157 lu_env_refill((struct lu_env *)env);
158 info = lu_context_key_get(&env->le_ctx, &osp_thread_key);
164 struct osp_txn_info {
165 __u32 oti_current_id;
168 extern struct lu_context_key osp_txn_key;
170 static inline struct osp_txn_info *osp_txn_info(struct lu_context *ctx)
172 struct osp_txn_info *info;
174 info = lu_context_key_get(ctx, &osp_txn_key);
178 extern const struct lu_device_operations osp_lu_ops;
180 static inline int lu_device_is_osp(struct lu_device *d)
182 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &osp_lu_ops);
185 static inline struct osp_device *lu2osp_dev(struct lu_device *d)
187 LASSERT(lu_device_is_osp(d));
188 return container_of0(d, struct osp_device, opd_dt_dev.dd_lu_dev);
191 static inline struct lu_device *osp2lu_dev(struct osp_device *d)
193 return &d->opd_dt_dev.dd_lu_dev;
196 static inline struct osp_device *dt2osp_dev(struct dt_device *d)
198 LASSERT(lu_device_is_osp(&d->dd_lu_dev));
199 return container_of0(d, struct osp_device, opd_dt_dev);
202 static inline struct osp_object *lu2osp_obj(struct lu_object *o)
204 LASSERT(ergo(o != NULL, lu_device_is_osp(o->lo_dev)));
205 return container_of0(o, struct osp_object, opo_obj.do_lu);
208 static inline struct lu_object *osp2lu_obj(struct osp_object *obj)
210 return &obj->opo_obj.do_lu;
213 static inline struct osp_object *osp_obj(const struct lu_object *o)
215 LASSERT(lu_device_is_osp(o->lo_dev));
216 return container_of0(o, struct osp_object, opo_obj.do_lu);
219 static inline struct osp_object *dt2osp_obj(const struct dt_object *d)
221 return osp_obj(&d->do_lu);
224 static inline struct dt_object *osp_object_child(struct osp_object *o)
226 return container_of0(lu_object_next(osp2lu_obj(o)),
227 struct dt_object, do_lu);
231 void osp_update_last_id(struct osp_device *d, obd_id objid);
233 /* osp_precreate.c */
234 int osp_init_precreate(struct osp_device *d);
235 int osp_precreate_reserve(const struct lu_env *env, struct osp_device *d);
236 __u64 osp_precreate_get_id(struct osp_device *d);
237 void osp_precreate_fini(struct osp_device *d);
238 int osp_object_truncate(const struct lu_env *env, struct dt_object *dt, __u64);
239 void osp_pre_update_status(struct osp_device *d, int rc);
240 void osp_statfs_need_now(struct osp_device *d);
243 void lprocfs_osp_init_vars(struct lprocfs_static_vars *lvars);
246 /* functions below will be replaced by full versions with osp_sync.c code */
248 int osp_sync_declare_add(const struct lu_env *env, struct osp_object *o,
249 llog_op_type type, struct thandle *th)
255 int osp_sync_add(const struct lu_env *env, struct osp_object *o,
256 llog_op_type type, struct thandle *th,
257 const struct lu_attr *attr)