lustre/include/obd_class.h

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   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.
   9  *
  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).
  15  *
  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
  19  *
  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
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, 2014, Intel Corporation.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  */
  36 #ifndef __CLASS_OBD_H
  37 #define __CLASS_OBD_H
  38
  39
  40 #include <obd_support.h>
  41 #include <lustre_import.h>
  42 #include <lustre_net.h>
  43 #include <obd.h>
  44 #include <lustre_lib.h>
  45 #include <lustre/lustre_idl.h>
  46 #include <lprocfs_status.h>
  47
  48 #define OBD_STATFS_NODELAY      0x0001  /* requests should be send without delay
  49                                          * and resends for avoid deadlocks */
  50 #define OBD_STATFS_FROM_CACHE   0x0002  /* the statfs callback should not update
  51                                          * obd_osfs_age */
  52 #define OBD_STATFS_PTLRPCD      0x0004  /* requests will be sent via ptlrpcd
  53                                          * instead of a specific set. This
  54                                          * means that we cannot rely on the set
  55                                          * interpret routine to be called.
  56                                          * lov_statfs_fini() must thus be called
  57                                          * by the request interpret routine */
  58 #define OBD_STATFS_FOR_MDT0     0x0008  /* The statfs is only for retrieving
  59                                          * information from MDT0. */
  60
  61 /* OBD Device Declarations */
  62 extern struct obd_device *obd_devs[MAX_OBD_DEVICES];
  63 extern struct list_head obd_types;
  64 extern spinlock_t obd_types_lock;
  65 extern rwlock_t obd_dev_lock;
  66
  67 /* OBD Operations Declarations */
  68 extern struct obd_device *class_conn2obd(struct lustre_handle *);
  69 extern struct obd_device *class_exp2obd(struct obd_export *);
  70 extern int class_handle_ioctl(unsigned int cmd, unsigned long arg);
  71 extern int lustre_get_jobid(char *jobid);
  72
  73 struct lu_device_type;
  74
  75 /* genops.c */
  76 struct obd_export *class_conn2export(struct lustre_handle *);
  77 int class_register_type(struct obd_ops *, struct md_ops *, bool enable_proc,
  78                         struct lprocfs_vars *module_vars,
  79                         const char *nm, struct lu_device_type *ldt);
  80 int class_unregister_type(const char *nm);
  81
  82 struct obd_device *class_newdev(const char *type_name, const char *name);
  83 void class_release_dev(struct obd_device *obd);
  84
  85 int class_name2dev(const char *name);
  86 struct obd_device *class_name2obd(const char *name);
  87 int class_uuid2dev(struct obd_uuid *uuid);
  88 struct obd_device *class_uuid2obd(struct obd_uuid *uuid);
  89 void class_obd_list(void);
  90 struct obd_device * class_find_client_obd(struct obd_uuid *tgt_uuid,
  91                                           const char * typ_name,
  92                                           struct obd_uuid *grp_uuid);
  93 struct obd_device * class_devices_in_group(struct obd_uuid *grp_uuid,
  94                                            int *next);
  95 struct obd_device * class_num2obd(int num);
  96 int get_devices_count(void);
  97
  98 int class_notify_sptlrpc_conf(const char *fsname, int namelen);
  99
 100 char *obd_export_nid2str(struct obd_export *exp);
 101
 102 int obd_export_evict_by_nid(struct obd_device *obd, const char *nid);
 103 int obd_export_evict_by_uuid(struct obd_device *obd, const char *uuid);
 104 int obd_connect_flags2str(char *page, int count, __u64 flags, char *sep);
 105
 106 int obd_zombie_impexp_init(void);
 107 void obd_zombie_impexp_stop(void);
 108 void obd_zombie_impexp_cull(void);
 109 void obd_zombie_barrier(void);
 110 void obd_exports_barrier(struct obd_device *obd);
 111 int kuc_len(int payload_len);
 112 struct kuc_hdr * kuc_ptr(void *p);
 113 int kuc_ispayload(void *p);
 114 void *kuc_alloc(int payload_len, int transport, int type);
 115 void kuc_free(void *p, int payload_len);
 116 int obd_get_request_slot(struct client_obd *cli);
 117 void obd_put_request_slot(struct client_obd *cli);
 118 __u32 obd_get_max_rpcs_in_flight(struct client_obd *cli);
 119 int obd_set_max_rpcs_in_flight(struct client_obd *cli, __u32 max);
 120 __u16 obd_get_max_mod_rpcs_in_flight(struct client_obd *cli);
 121 int obd_set_max_mod_rpcs_in_flight(struct client_obd *cli, __u16 max);
 122 int obd_mod_rpc_stats_seq_show(struct client_obd *cli, struct seq_file *seq);
 123
 124 __u16 obd_get_mod_rpc_slot(struct client_obd *cli, __u32 opc,
 125                            struct lookup_intent *it);
 126 void obd_put_mod_rpc_slot(struct client_obd *cli, __u32 opc,
 127                           struct lookup_intent *it, __u16 tag);
 128
 129 struct llog_handle;
 130 struct llog_rec_hdr;
 131 typedef int (*llog_cb_t)(const struct lu_env *, struct llog_handle *,
 132                          struct llog_rec_hdr *, void *);
 133 /* obd_config.c */
 134 struct lustre_cfg *lustre_cfg_rename(struct lustre_cfg *cfg,
 135                                      const char *new_name);
 136 int class_process_config(struct lustre_cfg *lcfg);
 137 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
 138                              struct lustre_cfg *lcfg, void *data);
 139 int class_attach(struct lustre_cfg *lcfg);
 140 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
 141 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg);
 142 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg);
 143 struct obd_device *class_incref(struct obd_device *obd,
 144                                 const char *scope, const void *source);
 145 void class_decref(struct obd_device *obd,
 146                   const char *scope, const void *source);
 147 void dump_exports(struct obd_device *obd, int locks);
 148 int class_config_llog_handler(const struct lu_env *env,
 149                               struct llog_handle *handle,
 150                               struct llog_rec_hdr *rec, void *data);
 151 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg);
 152 int class_add_uuid(const char *uuid, __u64 nid);
 153
 154 #define CFG_F_START     0x01   /* Set when we start updating from a log */
 155 #define CFG_F_MARKER    0x02   /* We are within a maker */
 156 #define CFG_F_SKIP      0x04   /* We should ignore this cfg command */
 157 #define CFG_F_COMPAT146 0x08   /* Allow old-style logs */
 158 #define CFG_F_EXCLUDE   0x10   /* OST exclusion list */
 159
 160 /* Passed as data param to class_config_parse_llog */
 161 struct config_llog_instance {
 162         char                    *cfg_obdname;
 163         void                    *cfg_instance;
 164         struct super_block      *cfg_sb;
 165         struct obd_uuid          cfg_uuid;
 166         llog_cb_t                cfg_callback;
 167         int                      cfg_last_idx; /* for partial llog processing */
 168         int                      cfg_flags;
 169         __u32                    cfg_lwp_idx;
 170 };
 171 int class_config_parse_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
 172                             char *name, struct config_llog_instance *cfg);
 173 int class_config_dump_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
 174                            char *name, struct config_llog_instance *cfg);
 175
 176 enum {
 177         CONFIG_T_CONFIG  = 0,
 178         CONFIG_T_SPTLRPC = 1,
 179         CONFIG_T_RECOVER = 2,
 180         CONFIG_T_PARAMS  = 3,
 181         CONFIG_T_MAX     = 4
 182 };
 183
 184 #define PARAMS_FILENAME "params"
 185 #define LCTL_UPCALL     "lctl"
 186
 187 /* list of active configuration logs  */
 188 struct config_llog_data {
 189         struct ldlm_res_id          cld_resid;
 190         struct config_llog_instance cld_cfg;
 191         struct list_head            cld_list_chain;
 192         atomic_t                    cld_refcount;
 193         struct config_llog_data    *cld_sptlrpc;/* depended sptlrpc log */
 194         struct config_llog_data    *cld_params; /* common parameters log */
 195         struct config_llog_data    *cld_recover;/* imperative recover log */
 196         struct obd_export          *cld_mgcexp;
 197         struct mutex                cld_lock;
 198         int                         cld_type;
 199         unsigned int                cld_stopping:1, /* we were told to stop
 200                                                      * watching */
 201                                     cld_lostlock:1; /* lock not requeued */
 202         char                        cld_logname[0];
 203 };
 204
 205 struct lustre_profile {
 206         struct list_head         lp_list;
 207         char                    *lp_profile;
 208         char                    *lp_dt;
 209         char                    *lp_md;
 210 };
 211
 212 struct lustre_profile *class_get_profile(const char * prof);
 213 void class_del_profile(const char *prof);
 214 void class_del_profiles(void);
 215
 216 #if LUSTRE_TRACKS_LOCK_EXP_REFS
 217
 218 void __class_export_add_lock_ref(struct obd_export *, struct ldlm_lock *);
 219 void __class_export_del_lock_ref(struct obd_export *, struct ldlm_lock *);
 220 extern void (*class_export_dump_hook)(struct obd_export *);
 221
 222 #else
 223
 224 #define __class_export_add_lock_ref(exp, lock)             do {} while(0)
 225 #define __class_export_del_lock_ref(exp, lock)             do {} while(0)
 226
 227 #endif
 228
 229 #define class_export_rpc_inc(exp)                                       \
 230 ({                                                                      \
 231         atomic_inc(&(exp)->exp_rpc_count);                              \
 232         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",    \
 233                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 234 })
 235
 236 #define class_export_rpc_dec(exp)                                       \
 237 ({                                                                      \
 238         LASSERT_ATOMIC_POS(&exp->exp_rpc_count);                        \
 239         atomic_dec(&(exp)->exp_rpc_count);                              \
 240         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",    \
 241                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 242 })
 243
 244 #define class_export_lock_get(exp, lock)                                \
 245 ({                                                                      \
 246         atomic_inc(&(exp)->exp_locks_count);                            \
 247         __class_export_add_lock_ref(exp, lock);                         \
 248         CDEBUG(D_INFO, "lock GETting export %p : new locks_count %d\n", \
 249                (exp), atomic_read(&(exp)->exp_locks_count));            \
 250         class_export_get(exp);                                          \
 251 })
 252
 253 #define class_export_lock_put(exp, lock)                                \
 254 ({                                                                      \
 255         LASSERT_ATOMIC_POS(&exp->exp_locks_count);                      \
 256         atomic_dec(&(exp)->exp_locks_count);                            \
 257         __class_export_del_lock_ref(exp, lock);                         \
 258         CDEBUG(D_INFO, "lock PUTting export %p : new locks_count %d\n", \
 259                (exp), atomic_read(&(exp)->exp_locks_count));            \
 260         class_export_put(exp);                                          \
 261 })
 262
 263 #define class_export_cb_get(exp)                                        \
 264 ({                                                                      \
 265         atomic_inc(&(exp)->exp_cb_count);                               \
 266         CDEBUG(D_INFO, "callback GETting export %p : new cb_count %d\n",\
 267                (exp), atomic_read(&(exp)->exp_cb_count));               \
 268         class_export_get(exp);                                          \
 269 })
 270
 271 #define class_export_cb_put(exp)                                        \
 272 ({                                                                      \
 273         LASSERT_ATOMIC_POS(&exp->exp_cb_count);                         \
 274         atomic_dec(&(exp)->exp_cb_count);                               \
 275         CDEBUG(D_INFO, "callback PUTting export %p : new cb_count %d\n",\
 276                (exp), atomic_read(&(exp)->exp_cb_count));               \
 277         class_export_put(exp);                                          \
 278 })
 279
 280 /* genops.c */
 281 struct obd_export *class_export_get(struct obd_export *exp);
 282 void class_export_put(struct obd_export *exp);
 283 struct obd_export *class_new_export(struct obd_device *obddev,
 284                                     struct obd_uuid *cluuid);
 285 void class_unlink_export(struct obd_export *exp);
 286
 287 struct obd_import *class_import_get(struct obd_import *);
 288 void class_import_put(struct obd_import *);
 289 struct obd_import *class_new_import(struct obd_device *obd);
 290 void class_destroy_import(struct obd_import *exp);
 291
 292 struct obd_type *class_search_type(const char *name);
 293 struct obd_type *class_get_type(const char *name);
 294 void class_put_type(struct obd_type *type);
 295 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 296                   struct obd_uuid *cluuid);
 297 int class_disconnect(struct obd_export *exp);
 298 void class_fail_export(struct obd_export *exp);
 299 int class_connected_export(struct obd_export *exp);
 300 void class_disconnect_exports(struct obd_device *obddev);
 301 int class_manual_cleanup(struct obd_device *obd);
 302 void class_disconnect_stale_exports(struct obd_device *,
 303                                     int (*test_export)(struct obd_export *));
 304 static inline enum obd_option exp_flags_from_obd(struct obd_device *obd)
 305 {
 306         return ((obd->obd_fail ? OBD_OPT_FAILOVER : 0) |
 307                 (obd->obd_force ? OBD_OPT_FORCE : 0) |
 308                 (obd->obd_abort_recovery ? OBD_OPT_ABORT_RECOV : 0) |
 309                 0);
 310 }
 311
 312 #ifdef HAVE_SERVER_SUPPORT
 313 static inline struct lu_target *class_exp2tgt(struct obd_export *exp)
 314 {
 315         LASSERT(exp->exp_obd);
 316         if (exp->exp_obd->u.obt.obt_magic != OBT_MAGIC)
 317                 return NULL;
 318         return exp->exp_obd->u.obt.obt_lut;
 319 }
 320
 321 static inline struct lr_server_data *class_server_data(struct obd_device *obd)
 322 {
 323         LASSERT(obd->u.obt.obt_lut);
 324         return &obd->u.obt.obt_lut->lut_lsd;
 325 }
 326 #endif
 327
 328 /* obdo.c */
 329 struct lu_attr;
 330 struct inode;
 331
 332 void obdo_from_la(struct obdo *dst, const struct lu_attr *la, u64 valid);
 333 void la_from_obdo(struct lu_attr *la, const struct obdo *dst, u64 valid);
 334
 335 void obdo_cpy_md(struct obdo *dst, const struct obdo *src, u64 valid);
 336 void obdo_to_ioobj(const struct obdo *oa, struct obd_ioobj *ioobj);
 337
 338 #define OBT(dev)        (dev)->obd_type
 339 #define OBP(dev, op)    (dev)->obd_type->typ_dt_ops->o_ ## op
 340 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
 341 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 342
 343 /* Ensure obd_setup: used for cleanup which must be called
 344    while obd is stopping */
 345 #define OBD_CHECK_DEV(obd)                                      \
 346 do {                                                            \
 347         if (!(obd)) {                                           \
 348                 CERROR("NULL device\n");                        \
 349                 RETURN(-ENODEV);                                \
 350         }                                                       \
 351 } while (0)
 352
 353 /* ensure obd_setup and !obd_stopping */
 354 #define OBD_CHECK_DEV_ACTIVE(obd)                               \
 355 do {                                                            \
 356         OBD_CHECK_DEV(obd);                                     \
 357         if (!(obd)->obd_set_up || (obd)->obd_stopping) {        \
 358                 CERROR("Device %d not setup\n",                 \
 359                        (obd)->obd_minor);                       \
 360                 RETURN(-ENODEV);                                \
 361         }                                                       \
 362 } while (0)
 363
 364
 365 #ifdef CONFIG_PROC_FS
 366 #define OBD_COUNTER_OFFSET(op)                                                 \
 367         ((offsetof(struct obd_ops, o_ ## op) -                                 \
 368           offsetof(struct obd_ops, o_iocontrol))                               \
 369          / sizeof(((struct obd_ops *)NULL)->o_iocontrol))
 370
 371 /* The '- 1' below is for o_owner. */
 372 #define NUM_OBD_STATS                                                          \
 373         (sizeof(struct obd_ops) /                                              \
 374          sizeof(((struct obd_ops *)NULL)->o_iocontrol) - 1)
 375
 376 #define OBD_COUNTER_INCREMENT(obd, op)                                         \
 377         lprocfs_counter_incr((obd)->obd_stats,                                 \
 378                              (obd)->obd_cntr_base + OBD_COUNTER_OFFSET(op))
 379
 380 #define EXP_COUNTER_INCREMENT(exp, op)                                         \
 381         do {                                                                   \
 382                 unsigned int _off;                                             \
 383                 _off = (exp)->exp_obd->obd_cntr_base + OBD_COUNTER_OFFSET(op); \
 384                 lprocfs_counter_incr((exp)->exp_obd->obd_stats, _off);         \
 385                 if ((exp)->exp_obd->obd_uses_nid_stats &&                      \
 386                     (exp)->exp_nid_stats != NULL)                              \
 387                         lprocfs_counter_incr((exp)->exp_nid_stats->nid_stats,  \
 388                                              _off);                            \
 389         } while (0)
 390
 391 #define _MD_COUNTER_OFFSET(m_op)                                               \
 392         ((offsetof(struct md_ops, m_op) -                                      \
 393           offsetof(struct md_ops, MD_STATS_FIRST_OP)) /                        \
 394          sizeof(((struct md_ops *)NULL)->MD_STATS_FIRST_OP))
 395
 396 #define MD_COUNTER_OFFSET(op) _MD_COUNTER_OFFSET(m_ ## op)
 397
 398 #define NUM_MD_STATS                                                           \
 399         (_MD_COUNTER_OFFSET(MD_STATS_LAST_OP) -                                \
 400          _MD_COUNTER_OFFSET(MD_STATS_FIRST_OP) + 1)
 401
 402 /* Note that we only increment md counters for ops whose offset is less
 403  * than NUM_MD_STATS. This is explained in a comment in the definition
 404  * of struct md_ops. */
 405 #define EXP_MD_COUNTER_INCREMENT(exp, op)                                      \
 406         do {                                                                   \
 407                 if (MD_COUNTER_OFFSET(op) < NUM_MD_STATS)                      \
 408                         lprocfs_counter_incr((exp)->exp_obd->obd_md_stats,     \
 409                                         (exp)->exp_obd->obd_md_cntr_base +     \
 410                                         MD_COUNTER_OFFSET(op));                \
 411         } while (0)
 412
 413 #else
 414 #define OBD_COUNTER_OFFSET(op)
 415 #define OBD_COUNTER_INCREMENT(obd, op)
 416 #define EXP_COUNTER_INCREMENT(exp, op)
 417 #define EXP_MD_COUNTER_INCREMENT(exp, op)
 418 #endif
 419
 420 static inline int lprocfs_nid_ldlm_stats_init(struct nid_stat* tmp)
 421 {
 422         /* Always add in ldlm_stats */
 423         tmp->nid_ldlm_stats = lprocfs_alloc_stats(LDLM_LAST_OPC - LDLM_FIRST_OPC
 424                                                   ,LPROCFS_STATS_FLAG_NOPERCPU);
 425         if (tmp->nid_ldlm_stats == NULL)
 426                 return -ENOMEM;
 427
 428         lprocfs_init_ldlm_stats(tmp->nid_ldlm_stats);
 429
 430         return lprocfs_register_stats(tmp->nid_proc, "ldlm_stats",
 431                                       tmp->nid_ldlm_stats);
 432 }
 433
 434 #define EXP_CHECK_MD_OP(exp, op)                                \
 435 do {                                                            \
 436         if ((exp) == NULL) {                                    \
 437                 CERROR("obd_" #op ": NULL export\n");           \
 438                 RETURN(-ENODEV);                                \
 439         }                                                       \
 440         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 441                 CERROR("obd_" #op ": cleaned up obd\n");        \
 442                 RETURN(-EOPNOTSUPP);                            \
 443         }                                                       \
 444         if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
 445                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 446                        (exp)->exp_obd->obd_name,                \
 447                        (exp)->exp_obd->obd_minor);              \
 448                 RETURN(-EOPNOTSUPP);                            \
 449         }                                                       \
 450 } while (0)
 451
 452
 453 #define OBD_CHECK_DT_OP(obd, op, err)                           \
 454 do {                                                            \
 455         if (!OBT(obd) || !OBP((obd), op)) {                     \
 456                 if (err)                                        \
 457                         CERROR("obd_" #op ": dev %d no operation\n",    \
 458                                obd->obd_minor);                 \
 459                 RETURN(err);                                    \
 460         }                                                       \
 461 } while (0)
 462
 463 #define EXP_CHECK_DT_OP(exp, op)                                \
 464 do {                                                            \
 465         if ((exp) == NULL) {                                    \
 466                 CERROR("obd_" #op ": NULL export\n");           \
 467                 RETURN(-ENODEV);                                \
 468         }                                                       \
 469         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 470                 CERROR("obd_" #op ": cleaned up obd\n");        \
 471                 RETURN(-EOPNOTSUPP);                            \
 472         }                                                       \
 473         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 474                 CERROR("obd_" #op ": dev %d no operation\n",    \
 475                        (exp)->exp_obd->obd_minor);              \
 476                 RETURN(-EOPNOTSUPP);                            \
 477         }                                                       \
 478 } while (0)
 479
 480 #define CTXT_CHECK_OP(ctxt, op, err)                                 \
 481 do {                                                                 \
 482         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {             \
 483                 if (err)                                             \
 484                         CERROR("lop_" #op ": dev %d no operation\n", \
 485                                ctxt->loc_obd->obd_minor);            \
 486                 RETURN(err);                                         \
 487         }                                                            \
 488 } while (0)
 489
 490 static inline int class_devno_max(void)
 491 {
 492         return MAX_OBD_DEVICES;
 493 }
 494
 495 static inline int obd_get_info(const struct lu_env *env, struct obd_export *exp,
 496                                __u32 keylen, void *key,
 497                                __u32 *vallen, void *val)
 498 {
 499         int rc;
 500         ENTRY;
 501
 502         EXP_CHECK_DT_OP(exp, get_info);
 503         EXP_COUNTER_INCREMENT(exp, get_info);
 504
 505         rc = OBP(exp->exp_obd, get_info)(env, exp, keylen, key, vallen, val);
 506         RETURN(rc);
 507 }
 508
 509 static inline int obd_set_info_async(const struct lu_env *env,
 510                                      struct obd_export *exp,
 511                                      __u32 keylen, void *key,
 512                                      __u32 vallen, void *val,
 513                                      struct ptlrpc_request_set *set)
 514 {
 515         int rc;
 516         ENTRY;
 517
 518         EXP_CHECK_DT_OP(exp, set_info_async);
 519         EXP_COUNTER_INCREMENT(exp, set_info_async);
 520
 521         rc = OBP(exp->exp_obd, set_info_async)(env, exp, keylen, key, vallen,
 522                                                val, set);
 523         RETURN(rc);
 524 }
 525
 526 /*
 527  * obd-lu integration.
 528  *
 529  * Functionality is being moved into new lu_device-based layering, but some
 530  * pieces of configuration process are still based on obd devices.
 531  *
 532  * Specifically, lu_device_type_operations::ldto_device_alloc() methods fully
 533  * subsume ->o_setup() methods of obd devices they replace. The same for
 534  * lu_device_operations::ldo_process_config() and ->o_process_config(). As a
 535  * result, obd_setup() and obd_process_config() branch and call one XOR
 536  * another.
 537  *
 538  * Yet neither lu_device_type_operations::ldto_device_fini() nor
 539  * lu_device_type_operations::ldto_device_free() fully implement the
 540  * functionality of ->o_precleanup() and ->o_cleanup() they override. Hence,
 541  * obd_precleanup() and obd_cleanup() call both lu_device and obd operations.
 542  */
 543
 544 #define DECLARE_LU_VARS(ldt, d)                 \
 545         struct lu_device_type *ldt;       \
 546         struct lu_device *d
 547
 548 static inline int obd_setup(struct obd_device *obd, struct lustre_cfg *cfg)
 549 {
 550         int rc;
 551         DECLARE_LU_VARS(ldt, d);
 552         ENTRY;
 553
 554         ldt = obd->obd_type->typ_lu;
 555         if (ldt != NULL) {
 556                 struct lu_context  session_ctx;
 557                 struct lu_env env;
 558                 lu_context_init(&session_ctx, LCT_SESSION | LCT_SERVER_SESSION);
 559                 session_ctx.lc_thread = NULL;
 560                 lu_context_enter(&session_ctx);
 561
 562                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 563                 if (rc == 0) {
 564                         env.le_ses = &session_ctx;
 565                         d = ldt->ldt_ops->ldto_device_alloc(&env, ldt, cfg);
 566                         lu_env_fini(&env);
 567                         if (!IS_ERR(d)) {
 568                                 obd->obd_lu_dev = d;
 569                                 d->ld_obd = obd;
 570                                 rc = 0;
 571                         } else
 572                                 rc = PTR_ERR(d);
 573                 }
 574                 lu_context_exit(&session_ctx);
 575                 lu_context_fini(&session_ctx);
 576
 577         } else {
 578                 OBD_CHECK_DT_OP(obd, setup, -EOPNOTSUPP);
 579                 OBD_COUNTER_INCREMENT(obd, setup);
 580                 rc = OBP(obd, setup)(obd, cfg);
 581         }
 582         RETURN(rc);
 583 }
 584
 585 static inline int obd_precleanup(struct obd_device *obd,
 586                                  enum obd_cleanup_stage cleanup_stage)
 587 {
 588         int rc;
 589         DECLARE_LU_VARS(ldt, d);
 590         ENTRY;
 591
 592         OBD_CHECK_DEV(obd);
 593         ldt = obd->obd_type->typ_lu;
 594         d = obd->obd_lu_dev;
 595         if (ldt != NULL && d != NULL) {
 596                 if (cleanup_stage == OBD_CLEANUP_EXPORTS) {
 597                         struct lu_env env;
 598
 599                         rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 600                         if (rc == 0) {
 601                                 ldt->ldt_ops->ldto_device_fini(&env, d);
 602                                 lu_env_fini(&env);
 603                         }
 604                 }
 605         }
 606         OBD_CHECK_DT_OP(obd, precleanup, 0);
 607         OBD_COUNTER_INCREMENT(obd, precleanup);
 608
 609         rc = OBP(obd, precleanup)(obd, cleanup_stage);
 610         RETURN(rc);
 611 }
 612
 613 static inline int obd_cleanup(struct obd_device *obd)
 614 {
 615         int rc;
 616         DECLARE_LU_VARS(ldt, d);
 617         ENTRY;
 618
 619         OBD_CHECK_DEV(obd);
 620
 621         ldt = obd->obd_type->typ_lu;
 622         d = obd->obd_lu_dev;
 623         if (ldt != NULL && d != NULL) {
 624                 struct lu_env env;
 625
 626                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 627                 if (rc == 0) {
 628                         ldt->ldt_ops->ldto_device_free(&env, d);
 629                         lu_env_fini(&env);
 630                         obd->obd_lu_dev = NULL;
 631                 }
 632         }
 633         OBD_CHECK_DT_OP(obd, cleanup, 0);
 634         OBD_COUNTER_INCREMENT(obd, cleanup);
 635
 636         rc = OBP(obd, cleanup)(obd);
 637         RETURN(rc);
 638 }
 639
 640 static inline void obd_cleanup_client_import(struct obd_device *obd)
 641 {
 642         ENTRY;
 643
 644         /* If we set up but never connected, the
 645            client import will not have been cleaned. */
 646         down_write(&obd->u.cli.cl_sem);
 647         if (obd->u.cli.cl_import) {
 648                 struct obd_import *imp;
 649                 imp = obd->u.cli.cl_import;
 650                 CDEBUG(D_CONFIG, "%s: client import never connected\n",
 651                        obd->obd_name);
 652                 ptlrpc_invalidate_import(imp);
 653                 if (imp->imp_rq_pool) {
 654                         ptlrpc_free_rq_pool(imp->imp_rq_pool);
 655                         imp->imp_rq_pool = NULL;
 656                 }
 657                 client_destroy_import(imp);
 658                 obd->u.cli.cl_import = NULL;
 659         }
 660         up_write(&obd->u.cli.cl_sem);
 661
 662         EXIT;
 663 }
 664
 665 static inline int
 666 obd_process_config(struct obd_device *obd, int datalen, void *data)
 667 {
 668         int rc;
 669         DECLARE_LU_VARS(ldt, d);
 670         ENTRY;
 671
 672         OBD_CHECK_DEV(obd);
 673
 674         obd->obd_process_conf = 1;
 675         ldt = obd->obd_type->typ_lu;
 676         d = obd->obd_lu_dev;
 677         if (ldt != NULL && d != NULL) {
 678                 struct lu_env env;
 679
 680                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 681                 if (rc == 0) {
 682                         rc = d->ld_ops->ldo_process_config(&env, d, data);
 683                         lu_env_fini(&env);
 684                 }
 685         } else {
 686                 OBD_CHECK_DT_OP(obd, process_config, -EOPNOTSUPP);
 687                 rc = OBP(obd, process_config)(obd, datalen, data);
 688         }
 689         OBD_COUNTER_INCREMENT(obd, process_config);
 690         obd->obd_process_conf = 0;
 691
 692         RETURN(rc);
 693 }
 694
 695 static inline int obd_create(const struct lu_env *env, struct obd_export *exp,
 696                              struct obdo *obdo)
 697 {
 698         int rc;
 699         ENTRY;
 700
 701         EXP_CHECK_DT_OP(exp, create);
 702         EXP_COUNTER_INCREMENT(exp, create);
 703
 704         rc = OBP(exp->exp_obd, create)(env, exp, obdo);
 705         RETURN(rc);
 706 }
 707
 708 static inline int obd_destroy(const struct lu_env *env, struct obd_export *exp,
 709                               struct obdo *obdo)
 710 {
 711         int rc;
 712         ENTRY;
 713
 714         EXP_CHECK_DT_OP(exp, destroy);
 715         EXP_COUNTER_INCREMENT(exp, destroy);
 716
 717         rc = OBP(exp->exp_obd, destroy)(env, exp, obdo);
 718         RETURN(rc);
 719 }
 720
 721 static inline int obd_getattr(const struct lu_env *env, struct obd_export *exp,
 722                               struct obdo *oa)
 723 {
 724         int rc;
 725
 726         ENTRY;
 727         EXP_CHECK_DT_OP(exp, getattr);
 728         EXP_COUNTER_INCREMENT(exp, getattr);
 729         rc = OBP(exp->exp_obd, getattr)(env, exp, oa);
 730
 731         RETURN(rc);
 732 }
 733
 734 static inline int obd_setattr(const struct lu_env *env, struct obd_export *exp,
 735                               struct obdo *oa)
 736 {
 737         int rc;
 738
 739         ENTRY;
 740         EXP_CHECK_DT_OP(exp, setattr);
 741         EXP_COUNTER_INCREMENT(exp, setattr);
 742         rc = OBP(exp->exp_obd, setattr)(env, exp, oa);
 743
 744         RETURN(rc);
 745 }
 746
 747 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 748                                int priority)
 749 {
 750         struct obd_device *obd = imp->imp_obd;
 751         int rc;
 752         ENTRY;
 753
 754         OBD_CHECK_DEV_ACTIVE(obd);
 755         OBD_CHECK_DT_OP(obd, add_conn, -EOPNOTSUPP);
 756         OBD_COUNTER_INCREMENT(obd, add_conn);
 757
 758         rc = OBP(obd, add_conn)(imp, uuid, priority);
 759         RETURN(rc);
 760 }
 761
 762 static inline int obd_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
 763 {
 764         struct obd_device *obd = imp->imp_obd;
 765         int rc;
 766         ENTRY;
 767
 768         OBD_CHECK_DEV_ACTIVE(obd);
 769         OBD_CHECK_DT_OP(obd, del_conn, -EOPNOTSUPP);
 770         OBD_COUNTER_INCREMENT(obd, del_conn);
 771
 772         rc = OBP(obd, del_conn)(imp, uuid);
 773         RETURN(rc);
 774 }
 775
 776 static inline struct obd_uuid *obd_get_uuid(struct obd_export *exp)
 777 {
 778         struct obd_uuid *uuid;
 779         ENTRY;
 780
 781         OBD_CHECK_DT_OP(exp->exp_obd, get_uuid, NULL);
 782         EXP_COUNTER_INCREMENT(exp, get_uuid);
 783
 784         uuid = OBP(exp->exp_obd, get_uuid)(exp);
 785         RETURN(uuid);
 786 }
 787
 788 /** Create a new /a exp on device /a obd for the uuid /a cluuid
 789  * @param exp New export handle
 790  * @param d Connect data, supported flags are set, flags also understood
 791  *    by obd are returned.
 792  */
 793 static inline int obd_connect(const struct lu_env *env,
 794                               struct obd_export **exp,struct obd_device *obd,
 795                               struct obd_uuid *cluuid,
 796                               struct obd_connect_data *data,
 797                               void *localdata)
 798 {
 799         int rc;
 800         __u64 ocf = data ? data->ocd_connect_flags : 0; /* for post-condition
 801                                                    * check */
 802         ENTRY;
 803
 804         OBD_CHECK_DEV_ACTIVE(obd);
 805         OBD_CHECK_DT_OP(obd, connect, -EOPNOTSUPP);
 806         OBD_COUNTER_INCREMENT(obd, connect);
 807
 808         rc = OBP(obd, connect)(env, exp, obd, cluuid, data, localdata);
 809         /* check that only subset is granted */
 810         LASSERT(ergo(data != NULL, (data->ocd_connect_flags & ocf) ==
 811                                     data->ocd_connect_flags));
 812         RETURN(rc);
 813 }
 814
 815 static inline int obd_reconnect(const struct lu_env *env,
 816                                 struct obd_export *exp,
 817                                 struct obd_device *obd,
 818                                 struct obd_uuid *cluuid,
 819                                 struct obd_connect_data *d,
 820                                 void *localdata)
 821 {
 822         int rc;
 823         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 824                                                    * check */
 825
 826         ENTRY;
 827
 828         OBD_CHECK_DEV_ACTIVE(obd);
 829         OBD_CHECK_DT_OP(obd, reconnect, 0);
 830         OBD_COUNTER_INCREMENT(obd, reconnect);
 831
 832         rc = OBP(obd, reconnect)(env, exp, obd, cluuid, d, localdata);
 833         /* check that only subset is granted */
 834         LASSERT(ergo(d != NULL,
 835                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 836         RETURN(rc);
 837 }
 838
 839 static inline int obd_disconnect(struct obd_export *exp)
 840 {
 841         int rc;
 842         ENTRY;
 843
 844         EXP_CHECK_DT_OP(exp, disconnect);
 845         EXP_COUNTER_INCREMENT(exp, disconnect);
 846
 847         rc = OBP(exp->exp_obd, disconnect)(exp);
 848         RETURN(rc);
 849 }
 850
 851 static inline int obd_fid_init(struct obd_device *obd, struct obd_export *exp,
 852                                enum lu_cli_type type)
 853 {
 854         int rc;
 855         ENTRY;
 856
 857         OBD_CHECK_DT_OP(obd, fid_init, 0);
 858         OBD_COUNTER_INCREMENT(obd, fid_init);
 859
 860         rc = OBP(obd, fid_init)(obd, exp, type);
 861         RETURN(rc);
 862 }
 863
 864 static inline int obd_fid_fini(struct obd_device *obd)
 865 {
 866         int rc;
 867         ENTRY;
 868
 869         OBD_CHECK_DT_OP(obd, fid_fini, 0);
 870         OBD_COUNTER_INCREMENT(obd, fid_fini);
 871
 872         rc = OBP(obd, fid_fini)(obd);
 873         RETURN(rc);
 874 }
 875
 876 static inline int obd_fid_alloc(const struct lu_env *env,
 877                                 struct obd_export *exp,
 878                                 struct lu_fid *fid,
 879                                 struct md_op_data *op_data)
 880 {
 881         int rc;
 882         ENTRY;
 883
 884         EXP_CHECK_DT_OP(exp, fid_alloc);
 885         EXP_COUNTER_INCREMENT(exp, fid_alloc);
 886
 887         rc = OBP(exp->exp_obd, fid_alloc)(env, exp, fid, op_data);
 888         RETURN(rc);
 889 }
 890
 891 static inline int obd_ping(const struct lu_env *env, struct obd_export *exp)
 892 {
 893         int rc;
 894         ENTRY;
 895
 896         OBD_CHECK_DT_OP(exp->exp_obd, ping, 0);
 897         EXP_COUNTER_INCREMENT(exp, ping);
 898
 899         rc = OBP(exp->exp_obd, ping)(env, exp);
 900         RETURN(rc);
 901 }
 902
 903 static inline int obd_pool_new(struct obd_device *obd, char *poolname)
 904 {
 905         int rc;
 906         ENTRY;
 907
 908         OBD_CHECK_DT_OP(obd, pool_new, -EOPNOTSUPP);
 909         OBD_COUNTER_INCREMENT(obd, pool_new);
 910
 911         rc = OBP(obd, pool_new)(obd, poolname);
 912         RETURN(rc);
 913 }
 914
 915 static inline int obd_pool_del(struct obd_device *obd, char *poolname)
 916 {
 917         int rc;
 918         ENTRY;
 919
 920         OBD_CHECK_DT_OP(obd, pool_del, -EOPNOTSUPP);
 921         OBD_COUNTER_INCREMENT(obd, pool_del);
 922
 923         rc = OBP(obd, pool_del)(obd, poolname);
 924         RETURN(rc);
 925 }
 926
 927 static inline int obd_pool_add(struct obd_device *obd, char *poolname, char *ostname)
 928 {
 929         int rc;
 930         ENTRY;
 931
 932         OBD_CHECK_DT_OP(obd, pool_add, -EOPNOTSUPP);
 933         OBD_COUNTER_INCREMENT(obd, pool_add);
 934
 935         rc = OBP(obd, pool_add)(obd, poolname, ostname);
 936         RETURN(rc);
 937 }
 938
 939 static inline int obd_pool_rem(struct obd_device *obd, char *poolname, char *ostname)
 940 {
 941         int rc;
 942         ENTRY;
 943
 944         OBD_CHECK_DT_OP(obd, pool_rem, -EOPNOTSUPP);
 945         OBD_COUNTER_INCREMENT(obd, pool_rem);
 946
 947         rc = OBP(obd, pool_rem)(obd, poolname, ostname);
 948         RETURN(rc);
 949 }
 950
 951 static inline void obd_getref(struct obd_device *obd)
 952 {
 953         ENTRY;
 954         if (OBT(obd) && OBP(obd, getref)) {
 955                 OBD_COUNTER_INCREMENT(obd, getref);
 956                 OBP(obd, getref)(obd);
 957         }
 958         EXIT;
 959 }
 960
 961 static inline void obd_putref(struct obd_device *obd)
 962 {
 963         ENTRY;
 964         if (OBT(obd) && OBP(obd, putref)) {
 965                 OBD_COUNTER_INCREMENT(obd, putref);
 966                 OBP(obd, putref)(obd);
 967         }
 968         EXIT;
 969 }
 970
 971 static inline int obd_init_export(struct obd_export *exp)
 972 {
 973         int rc = 0;
 974
 975         ENTRY;
 976         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 977             OBP((exp)->exp_obd, init_export))
 978                 rc = OBP(exp->exp_obd, init_export)(exp);
 979         RETURN(rc);
 980 }
 981
 982 static inline int obd_destroy_export(struct obd_export *exp)
 983 {
 984         ENTRY;
 985         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 986             OBP((exp)->exp_obd, destroy_export))
 987                 OBP(exp->exp_obd, destroy_export)(exp);
 988         RETURN(0);
 989 }
 990
 991 /* @max_age is the oldest time in jiffies that we accept using a cached data.
 992  * If the cache is older than @max_age we will get a new value from the
 993  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
 994 static inline int obd_statfs_async(struct obd_export *exp,
 995                                    struct obd_info *oinfo,
 996                                    __u64 max_age,
 997                                    struct ptlrpc_request_set *rqset)
 998 {
 999         int rc = 0;
1000         struct obd_device *obd;
1001         ENTRY;
1002
1003         if (exp == NULL || exp->exp_obd == NULL)
1004                 RETURN(-EINVAL);
1005
1006         obd = exp->exp_obd;
1007         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1008         OBD_COUNTER_INCREMENT(obd, statfs);
1009
1010         CDEBUG(D_SUPER, "%s: osfs %p age "LPU64", max_age "LPU64"\n",
1011                obd->obd_name, &obd->obd_osfs, obd->obd_osfs_age, max_age);
1012         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1013                 rc = OBP(obd, statfs_async)(exp, oinfo, max_age, rqset);
1014         } else {
1015                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1016                        " objects "LPU64"/"LPU64"\n",
1017                        obd->obd_name, &obd->obd_osfs,
1018                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1019                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1020                 spin_lock(&obd->obd_osfs_lock);
1021                 memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
1022                 spin_unlock(&obd->obd_osfs_lock);
1023                 oinfo->oi_flags |= OBD_STATFS_FROM_CACHE;
1024                 if (oinfo->oi_cb_up)
1025                         oinfo->oi_cb_up(oinfo, 0);
1026         }
1027         RETURN(rc);
1028 }
1029
1030 static inline int obd_statfs_rqset(struct obd_export *exp,
1031                                    struct obd_statfs *osfs, __u64 max_age,
1032                                    __u32 flags)
1033 {
1034         struct ptlrpc_request_set *set = NULL;
1035         struct obd_info oinfo = {
1036                 .oi_osfs = osfs,
1037                 .oi_flags = flags,
1038         };
1039         int rc = 0;
1040
1041         ENTRY;
1042
1043         set = ptlrpc_prep_set();
1044         if (set == NULL)
1045                 RETURN(-ENOMEM);
1046
1047         rc = obd_statfs_async(exp, &oinfo, max_age, set);
1048         if (rc == 0)
1049                 rc = ptlrpc_set_wait(set);
1050
1051         ptlrpc_set_destroy(set);
1052
1053         RETURN(rc);
1054 }
1055
1056 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1057  * If the cache is older than @max_age we will get a new value from the
1058  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1059 static inline int obd_statfs(const struct lu_env *env, struct obd_export *exp,
1060                              struct obd_statfs *osfs, __u64 max_age,
1061                              __u32 flags)
1062 {
1063         int rc = 0;
1064         struct obd_device *obd = exp->exp_obd;
1065         ENTRY;
1066
1067         if (obd == NULL)
1068                 RETURN(-EINVAL);
1069
1070         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1071         OBD_COUNTER_INCREMENT(obd, statfs);
1072
1073         CDEBUG(D_SUPER, "osfs "LPU64", max_age "LPU64"\n",
1074                obd->obd_osfs_age, max_age);
1075         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1076                 rc = OBP(obd, statfs)(env, exp, osfs, max_age, flags);
1077                 if (rc == 0) {
1078                         spin_lock(&obd->obd_osfs_lock);
1079                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
1080                         obd->obd_osfs_age = cfs_time_current_64();
1081                         spin_unlock(&obd->obd_osfs_lock);
1082                 }
1083         } else {
1084                 CDEBUG(D_SUPER, "%s: use %p cache blocks "LPU64"/"LPU64
1085                        " objects "LPU64"/"LPU64"\n",
1086                        obd->obd_name, &obd->obd_osfs,
1087                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1088                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1089                 spin_lock(&obd->obd_osfs_lock);
1090                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
1091                 spin_unlock(&obd->obd_osfs_lock);
1092         }
1093         RETURN(rc);
1094 }
1095
1096 static inline int obd_preprw(const struct lu_env *env, int cmd,
1097                              struct obd_export *exp, struct obdo *oa,
1098                              int objcount, struct obd_ioobj *obj,
1099                              struct niobuf_remote *remote, int *pages,
1100                              struct niobuf_local *local)
1101 {
1102         int rc;
1103
1104         ENTRY;
1105         EXP_CHECK_DT_OP(exp, preprw);
1106         EXP_COUNTER_INCREMENT(exp, preprw);
1107         rc = OBP(exp->exp_obd, preprw)(env, cmd, exp, oa, objcount, obj, remote,
1108                                        pages, local);
1109
1110         RETURN(rc);
1111 }
1112
1113 static inline int obd_commitrw(const struct lu_env *env, int cmd,
1114                                struct obd_export *exp, struct obdo *oa,
1115                                int objcount, struct obd_ioobj *obj,
1116                                struct niobuf_remote *rnb, int pages,
1117                                struct niobuf_local *local, int rc)
1118 {
1119         ENTRY;
1120
1121         EXP_CHECK_DT_OP(exp, commitrw);
1122         EXP_COUNTER_INCREMENT(exp, commitrw);
1123         rc = OBP(exp->exp_obd, commitrw)(env, cmd, exp, oa, objcount, obj,
1124                                          rnb, pages, local, rc);
1125
1126         RETURN(rc);
1127 }
1128
1129 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1130                                 int len, void *karg, void __user *uarg)
1131 {
1132         int rc;
1133         ENTRY;
1134
1135         EXP_CHECK_DT_OP(exp, iocontrol);
1136         EXP_COUNTER_INCREMENT(exp, iocontrol);
1137
1138         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1139         RETURN(rc);
1140 }
1141
1142 static inline void obd_import_event(struct obd_device *obd,
1143                                     struct obd_import *imp,
1144                                     enum obd_import_event event)
1145 {
1146         ENTRY;
1147         if (!obd) {
1148                 CERROR("NULL device\n");
1149                 EXIT;
1150                 return;
1151         }
1152         if (obd->obd_set_up && OBP(obd, import_event)) {
1153                 OBD_COUNTER_INCREMENT(obd, import_event);
1154                 OBP(obd, import_event)(obd, imp, event);
1155         }
1156         EXIT;
1157 }
1158
1159 static inline int obd_notify(struct obd_device *obd,
1160                              struct obd_device *watched,
1161                              enum obd_notify_event ev,
1162                              void *data)
1163 {
1164         int rc;
1165         ENTRY;
1166         OBD_CHECK_DEV(obd);
1167
1168         if (!obd->obd_set_up) {
1169                 CDEBUG(D_HA, "obd %s not set up\n", obd->obd_name);
1170                 RETURN(-EINVAL);
1171         }
1172
1173         if (!OBP(obd, notify)) {
1174                 CDEBUG(D_HA, "obd %s has no notify handler\n", obd->obd_name);
1175                 RETURN(-ENOSYS);
1176         }
1177
1178         OBD_COUNTER_INCREMENT(obd, notify);
1179         rc = OBP(obd, notify)(obd, watched, ev, data);
1180         RETURN(rc);
1181 }
1182
1183 static inline int obd_notify_observer(struct obd_device *observer,
1184                                       struct obd_device *observed,
1185                                       enum obd_notify_event ev,
1186                                       void *data)
1187 {
1188         int rc1;
1189         int rc2;
1190
1191         struct obd_notify_upcall *onu;
1192
1193         if (observer->obd_observer)
1194                 rc1 = obd_notify(observer->obd_observer, observed, ev, data);
1195         else
1196                 rc1 = 0;
1197         /*
1198          * Also, call non-obd listener, if any
1199          */
1200         onu = &observer->obd_upcall;
1201         if (onu->onu_upcall != NULL)
1202                 rc2 = onu->onu_upcall(observer, observed, ev,
1203                                       onu->onu_owner, NULL);
1204         else
1205                 rc2 = 0;
1206
1207         return rc1 ? rc1 : rc2;
1208 }
1209
1210 static inline int obd_quotactl(struct obd_export *exp,
1211                                struct obd_quotactl *oqctl)
1212 {
1213         int rc;
1214         ENTRY;
1215
1216         EXP_CHECK_DT_OP(exp, quotactl);
1217         EXP_COUNTER_INCREMENT(exp, quotactl);
1218
1219         rc = OBP(exp->exp_obd, quotactl)(exp->exp_obd, exp, oqctl);
1220         RETURN(rc);
1221 }
1222
1223 static inline int obd_health_check(const struct lu_env *env,
1224                                    struct obd_device *obd)
1225 {
1226         /* returns: 0 on healthy
1227          *         >0 on unhealthy + reason code/flag
1228          *            however the only suppored reason == 1 right now
1229          *            We'll need to define some better reasons
1230          *            or flags in the future.
1231          *         <0 on error
1232          */
1233         int rc;
1234         ENTRY;
1235
1236         /* don't use EXP_CHECK_DT_OP, because NULL method is normal here */
1237         if (obd == NULL || !OBT(obd)) {
1238                 CERROR("cleaned up obd\n");
1239                 RETURN(-EOPNOTSUPP);
1240         }
1241         if (!obd->obd_set_up || obd->obd_stopping)
1242                 RETURN(0);
1243         if (!OBP(obd, health_check))
1244                 RETURN(0);
1245
1246         rc = OBP(obd, health_check)(env, obd);
1247         RETURN(rc);
1248 }
1249
1250 static inline int obd_register_observer(struct obd_device *obd,
1251                                         struct obd_device *observer)
1252 {
1253         ENTRY;
1254         OBD_CHECK_DEV(obd);
1255         down_write(&obd->obd_observer_link_sem);
1256         if (obd->obd_observer && observer) {
1257                 up_write(&obd->obd_observer_link_sem);
1258                 RETURN(-EALREADY);
1259         }
1260         obd->obd_observer = observer;
1261         up_write(&obd->obd_observer_link_sem);
1262         RETURN(0);
1263 }
1264
1265 /* metadata helpers */
1266 static inline int md_getstatus(struct obd_export *exp, struct lu_fid *fid)
1267 {
1268         int rc;
1269
1270         ENTRY;
1271         EXP_CHECK_MD_OP(exp, getstatus);
1272         EXP_MD_COUNTER_INCREMENT(exp, getstatus);
1273         rc = MDP(exp->exp_obd, getstatus)(exp, fid);
1274
1275         RETURN(rc);
1276 }
1277
1278 static inline int md_getattr(struct obd_export *exp, struct md_op_data *op_data,
1279                              struct ptlrpc_request **request)
1280 {
1281         int rc;
1282         ENTRY;
1283         EXP_CHECK_MD_OP(exp, getattr);
1284         EXP_MD_COUNTER_INCREMENT(exp, getattr);
1285         rc = MDP(exp->exp_obd, getattr)(exp, op_data, request);
1286         RETURN(rc);
1287 }
1288
1289 static inline int md_null_inode(struct obd_export *exp,
1290                                    const struct lu_fid *fid)
1291 {
1292         int rc;
1293         ENTRY;
1294         EXP_CHECK_MD_OP(exp, null_inode);
1295         EXP_MD_COUNTER_INCREMENT(exp, null_inode);
1296         rc = MDP(exp->exp_obd, null_inode)(exp, fid);
1297         RETURN(rc);
1298 }
1299
1300 static inline int md_find_cbdata(struct obd_export *exp,
1301                                  const struct lu_fid *fid,
1302                                  ldlm_iterator_t it, void *data)
1303 {
1304         int rc;
1305         ENTRY;
1306         EXP_CHECK_MD_OP(exp, find_cbdata);
1307         EXP_MD_COUNTER_INCREMENT(exp, find_cbdata);
1308         rc = MDP(exp->exp_obd, find_cbdata)(exp, fid, it, data);
1309         RETURN(rc);
1310 }
1311
1312 static inline int md_close(struct obd_export *exp, struct md_op_data *op_data,
1313                            struct md_open_data *mod,
1314                            struct ptlrpc_request **request)
1315 {
1316         int rc;
1317         ENTRY;
1318         EXP_CHECK_MD_OP(exp, close);
1319         EXP_MD_COUNTER_INCREMENT(exp, close);
1320         rc = MDP(exp->exp_obd, close)(exp, op_data, mod, request);
1321         RETURN(rc);
1322 }
1323
1324 static inline int md_create(struct obd_export *exp, struct md_op_data *op_data,
1325                             const void *data, size_t datalen, umode_t mode,
1326                             uid_t uid, gid_t gid, cfs_cap_t cap_effective,
1327                             __u64 rdev, struct ptlrpc_request **request)
1328 {
1329         int rc;
1330         ENTRY;
1331         EXP_CHECK_MD_OP(exp, create);
1332         EXP_MD_COUNTER_INCREMENT(exp, create);
1333         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1334                                        uid, gid, cap_effective, rdev, request);
1335         RETURN(rc);
1336 }
1337
1338 static inline int md_enqueue(struct obd_export *exp,
1339                              struct ldlm_enqueue_info *einfo,
1340                              const union ldlm_policy_data *policy,
1341                              struct lookup_intent *it,
1342                              struct md_op_data *op_data,
1343                              struct lustre_handle *lockh,
1344                              __u64 extra_lock_flags)
1345 {
1346         int rc;
1347         ENTRY;
1348         EXP_CHECK_MD_OP(exp, enqueue);
1349         EXP_MD_COUNTER_INCREMENT(exp, enqueue);
1350         rc = MDP(exp->exp_obd, enqueue)(exp, einfo, policy, it, op_data, lockh,
1351                                         extra_lock_flags);
1352         RETURN(rc);
1353 }
1354
1355 static inline int md_getattr_name(struct obd_export *exp,
1356                                   struct md_op_data *op_data,
1357                                   struct ptlrpc_request **request)
1358 {
1359         int rc;
1360         ENTRY;
1361         EXP_CHECK_MD_OP(exp, getattr_name);
1362         EXP_MD_COUNTER_INCREMENT(exp, getattr_name);
1363         rc = MDP(exp->exp_obd, getattr_name)(exp, op_data, request);
1364         RETURN(rc);
1365 }
1366
1367 static inline int md_intent_lock(struct obd_export *exp,
1368                                  struct md_op_data *op_data,
1369                                  struct lookup_intent *it,
1370                                  struct ptlrpc_request **reqp,
1371                                  ldlm_blocking_callback cb_blocking,
1372                                  __u64 extra_lock_flags)
1373 {
1374         int rc;
1375         ENTRY;
1376         EXP_CHECK_MD_OP(exp, intent_lock);
1377         EXP_MD_COUNTER_INCREMENT(exp, intent_lock);
1378         rc = MDP(exp->exp_obd, intent_lock)(exp, op_data, it, reqp, cb_blocking,
1379                                             extra_lock_flags);
1380         RETURN(rc);
1381 }
1382
1383 static inline int md_link(struct obd_export *exp, struct md_op_data *op_data,
1384                           struct ptlrpc_request **request)
1385 {
1386         int rc;
1387         ENTRY;
1388         EXP_CHECK_MD_OP(exp, link);
1389         EXP_MD_COUNTER_INCREMENT(exp, link);
1390         rc = MDP(exp->exp_obd, link)(exp, op_data, request);
1391         RETURN(rc);
1392 }
1393
1394 static inline int md_rename(struct obd_export *exp, struct md_op_data *op_data,
1395                             const char *old, size_t oldlen, const char *new,
1396                             size_t newlen, struct ptlrpc_request **request)
1397 {
1398         int rc;
1399         ENTRY;
1400         EXP_CHECK_MD_OP(exp, rename);
1401         EXP_MD_COUNTER_INCREMENT(exp, rename);
1402         rc = MDP(exp->exp_obd, rename)(exp, op_data, old, oldlen, new,
1403                                        newlen, request);
1404         RETURN(rc);
1405 }
1406
1407 static inline int md_setattr(struct obd_export *exp, struct md_op_data *op_data,
1408                              void *ea, size_t ealen,
1409                              struct ptlrpc_request **request)
1410 {
1411         int rc;
1412         ENTRY;
1413         EXP_CHECK_MD_OP(exp, setattr);
1414         EXP_MD_COUNTER_INCREMENT(exp, setattr);
1415         rc = MDP(exp->exp_obd, setattr)(exp, op_data, ea, ealen, request);
1416         RETURN(rc);
1417 }
1418
1419 static inline int md_fsync(struct obd_export *exp, const struct lu_fid *fid,
1420                            struct ptlrpc_request **request)
1421 {
1422         int rc;
1423
1424         ENTRY;
1425         EXP_CHECK_MD_OP(exp, fsync);
1426         EXP_MD_COUNTER_INCREMENT(exp, fsync);
1427         rc = MDP(exp->exp_obd, fsync)(exp, fid, request);
1428
1429         RETURN(rc);
1430 }
1431
1432 static inline int md_read_page(struct obd_export *exp,
1433                                struct md_op_data *op_data,
1434                                struct md_callback *cb_op,
1435                                __u64  hash_offset,
1436                                struct page **ppage)
1437 {
1438         int rc;
1439         ENTRY;
1440         EXP_CHECK_MD_OP(exp, read_page);
1441         EXP_MD_COUNTER_INCREMENT(exp, read_page);
1442         rc = MDP(exp->exp_obd, read_page)(exp, op_data, cb_op, hash_offset,
1443                                           ppage);
1444         RETURN(rc);
1445 }
1446
1447 static inline int md_unlink(struct obd_export *exp, struct md_op_data *op_data,
1448                             struct ptlrpc_request **request)
1449 {
1450         int rc;
1451         ENTRY;
1452         EXP_CHECK_MD_OP(exp, unlink);
1453         EXP_MD_COUNTER_INCREMENT(exp, unlink);
1454         rc = MDP(exp->exp_obd, unlink)(exp, op_data, request);
1455         RETURN(rc);
1456 }
1457
1458 static inline int md_get_lustre_md(struct obd_export *exp,
1459                                    struct ptlrpc_request *req,
1460                                    struct obd_export *dt_exp,
1461                                    struct obd_export *md_exp,
1462                                    struct lustre_md *md)
1463 {
1464         ENTRY;
1465         EXP_CHECK_MD_OP(exp, get_lustre_md);
1466         EXP_MD_COUNTER_INCREMENT(exp, get_lustre_md);
1467         RETURN(MDP(exp->exp_obd, get_lustre_md)(exp, req, dt_exp, md_exp, md));
1468 }
1469
1470 static inline int md_free_lustre_md(struct obd_export *exp,
1471                                     struct lustre_md *md)
1472 {
1473         ENTRY;
1474         EXP_CHECK_MD_OP(exp, free_lustre_md);
1475         EXP_MD_COUNTER_INCREMENT(exp, free_lustre_md);
1476         RETURN(MDP(exp->exp_obd, free_lustre_md)(exp, md));
1477 }
1478
1479 static inline int md_merge_attr(struct obd_export *exp,
1480                                 const struct lmv_stripe_md *lsm,
1481                                 struct cl_attr *attr,
1482                                 ldlm_blocking_callback cb)
1483 {
1484         ENTRY;
1485         EXP_CHECK_MD_OP(exp, merge_attr);
1486         EXP_MD_COUNTER_INCREMENT(exp, merge_attr);
1487         RETURN(MDP(exp->exp_obd, merge_attr)(exp, lsm, attr, cb));
1488 }
1489
1490 static inline int md_setxattr(struct obd_export *exp, const struct lu_fid *fid,
1491                               u64 valid, const char *name,
1492                               const char *input, int input_size,
1493                               int output_size, int flags, __u32 suppgid,
1494                               struct ptlrpc_request **request)
1495 {
1496         ENTRY;
1497         EXP_CHECK_MD_OP(exp, setxattr);
1498         EXP_MD_COUNTER_INCREMENT(exp, setxattr);
1499         RETURN(MDP(exp->exp_obd, setxattr)(exp, fid, valid, name, input,
1500                                            input_size, output_size, flags,
1501                                            suppgid, request));
1502 }
1503
1504 static inline int md_getxattr(struct obd_export *exp, const struct lu_fid *fid,
1505                               u64 valid, const char *name,
1506                               const char *input, int input_size,
1507                               int output_size, int flags,
1508                               struct ptlrpc_request **request)
1509 {
1510         ENTRY;
1511         EXP_CHECK_MD_OP(exp, getxattr);
1512         EXP_MD_COUNTER_INCREMENT(exp, getxattr);
1513         RETURN(MDP(exp->exp_obd, getxattr)(exp, fid, valid, name, input,
1514                                            input_size, output_size, flags,
1515                                            request));
1516 }
1517
1518 static inline int md_set_open_replay_data(struct obd_export *exp,
1519                                           struct obd_client_handle *och,
1520                                           struct lookup_intent *it)
1521 {
1522         ENTRY;
1523         EXP_CHECK_MD_OP(exp, set_open_replay_data);
1524         EXP_MD_COUNTER_INCREMENT(exp, set_open_replay_data);
1525         RETURN(MDP(exp->exp_obd, set_open_replay_data)(exp, och, it));
1526 }
1527
1528 static inline int md_clear_open_replay_data(struct obd_export *exp,
1529                                             struct obd_client_handle *och)
1530 {
1531         ENTRY;
1532         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
1533         EXP_MD_COUNTER_INCREMENT(exp, clear_open_replay_data);
1534         RETURN(MDP(exp->exp_obd, clear_open_replay_data)(exp, och));
1535 }
1536
1537 static inline int md_set_lock_data(struct obd_export *exp,
1538                                    __u64 *lockh, void *data, __u64 *bits)
1539 {
1540         ENTRY;
1541         EXP_CHECK_MD_OP(exp, set_lock_data);
1542         EXP_MD_COUNTER_INCREMENT(exp, set_lock_data);
1543         RETURN(MDP(exp->exp_obd, set_lock_data)(exp, lockh, data, bits));
1544 }
1545
1546 static inline int md_cancel_unused(struct obd_export *exp,
1547                                    const struct lu_fid *fid,
1548                                    ldlm_policy_data_t *policy,
1549                                    ldlm_mode_t mode,
1550                                    ldlm_cancel_flags_t flags,
1551                                    void *opaque)
1552 {
1553         int rc;
1554         ENTRY;
1555
1556         EXP_CHECK_MD_OP(exp, cancel_unused);
1557         EXP_MD_COUNTER_INCREMENT(exp, cancel_unused);
1558
1559         rc = MDP(exp->exp_obd, cancel_unused)(exp, fid, policy, mode,
1560                                               flags, opaque);
1561         RETURN(rc);
1562 }
1563
1564 static inline ldlm_mode_t md_lock_match(struct obd_export *exp, __u64 flags,
1565                                         const struct lu_fid *fid,
1566                                         ldlm_type_t type,
1567                                         ldlm_policy_data_t *policy,
1568                                         ldlm_mode_t mode,
1569                                         struct lustre_handle *lockh)
1570 {
1571         ENTRY;
1572         EXP_CHECK_MD_OP(exp, lock_match);
1573         EXP_MD_COUNTER_INCREMENT(exp, lock_match);
1574         RETURN(MDP(exp->exp_obd, lock_match)(exp, flags, fid, type,
1575                                              policy, mode, lockh));
1576 }
1577
1578 static inline int md_init_ea_size(struct obd_export *exp, __u32 ea_size,
1579                                   __u32 def_ea_size)
1580 {
1581         ENTRY;
1582         EXP_CHECK_MD_OP(exp, init_ea_size);
1583         EXP_MD_COUNTER_INCREMENT(exp, init_ea_size);
1584         RETURN(MDP(exp->exp_obd, init_ea_size)(exp, ea_size, def_ea_size));
1585 }
1586
1587 static inline int md_get_remote_perm(struct obd_export *exp,
1588                                      const struct lu_fid *fid, u32 suppgid,
1589                                      struct ptlrpc_request **request)
1590 {
1591         ENTRY;
1592         EXP_CHECK_MD_OP(exp, get_remote_perm);
1593         EXP_MD_COUNTER_INCREMENT(exp, get_remote_perm);
1594
1595         RETURN(MDP(exp->exp_obd, get_remote_perm)(exp, fid, suppgid, request));
1596 }
1597
1598 static inline int md_intent_getattr_async(struct obd_export *exp,
1599                                           struct md_enqueue_info *minfo,
1600                                           struct ldlm_enqueue_info *einfo)
1601 {
1602         int rc;
1603         ENTRY;
1604         EXP_CHECK_MD_OP(exp, intent_getattr_async);
1605         EXP_MD_COUNTER_INCREMENT(exp, intent_getattr_async);
1606         rc = MDP(exp->exp_obd, intent_getattr_async)(exp, minfo, einfo);
1607         RETURN(rc);
1608 }
1609
1610 static inline int md_revalidate_lock(struct obd_export *exp,
1611                                      struct lookup_intent *it,
1612                                      struct lu_fid *fid, __u64 *bits)
1613 {
1614         int rc;
1615         ENTRY;
1616         EXP_CHECK_MD_OP(exp, revalidate_lock);
1617         EXP_MD_COUNTER_INCREMENT(exp, revalidate_lock);
1618         rc = MDP(exp->exp_obd, revalidate_lock)(exp, it, fid, bits);
1619         RETURN(rc);
1620 }
1621
1622 static inline int md_get_fid_from_lsm(struct obd_export *exp,
1623                                       const struct lmv_stripe_md *lsm,
1624                                       const char *name, int namelen,
1625                                       struct lu_fid *fid)
1626 {
1627         int rc;
1628         ENTRY;
1629         EXP_CHECK_MD_OP(exp, get_fid_from_lsm);
1630         EXP_MD_COUNTER_INCREMENT(exp, get_fid_from_lsm);
1631         rc = MDP(exp->exp_obd, get_fid_from_lsm)(exp, lsm, name, namelen, fid);
1632         RETURN(rc);
1633 }
1634
1635
1636 /* Unpack an MD struct from disk to in-memory format.
1637  * Returns +ve size of unpacked MD (0 for free), or -ve error.
1638  *
1639  * If *plsm != NULL and lmm == NULL then *lsm will be freed.
1640  * If *plsm == NULL then it will be allocated.
1641  */
1642 static inline int md_unpackmd(struct obd_export *exp,
1643                               struct lmv_stripe_md **plsm,
1644                               const union lmv_mds_md *lmm, size_t lmm_size)
1645 {
1646         int rc;
1647         ENTRY;
1648         EXP_CHECK_MD_OP(exp, unpackmd);
1649         EXP_MD_COUNTER_INCREMENT(exp, unpackmd);
1650         rc = MDP(exp->exp_obd, unpackmd)(exp, plsm, lmm, lmm_size);
1651         RETURN(rc);
1652 }
1653
1654 /* OBD Metadata Support */
1655
1656 extern int obd_init_caches(void);
1657 extern void obd_cleanup_caches(void);
1658
1659 /* support routines */
1660 extern struct kmem_cache *obdo_cachep;
1661
1662 #define OBDO_ALLOC(ptr)                                                       \
1663 do {                                                                          \
1664         OBD_SLAB_ALLOC_PTR_GFP((ptr), obdo_cachep, GFP_NOFS);             \
1665 } while(0)
1666
1667 #define OBDO_FREE(ptr)                                                        \
1668 do {                                                                          \
1669         OBD_SLAB_FREE_PTR((ptr), obdo_cachep);                                \
1670 } while(0)
1671
1672
1673 typedef int (*register_lwp_cb)(void *data);
1674
1675 struct lwp_register_item {
1676         struct obd_export **lri_exp;
1677         register_lwp_cb     lri_cb_func;
1678         void               *lri_cb_data;
1679         struct list_head            lri_list;
1680         char                lri_name[MTI_NAME_MAXLEN];
1681 };
1682
1683 /* I'm as embarrassed about this as you are.
1684  *
1685  * <shaver> // XXX do not look into _superhack with remaining eye
1686  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
1687 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
1688
1689 /* obd_mount.c */
1690 #ifdef HAVE_SERVER_SUPPORT
1691 int lustre_register_lwp_item(const char *lwpname, struct obd_export **exp,
1692                              register_lwp_cb cb_func, void *cb_data);
1693 void lustre_deregister_lwp_item(struct obd_export **exp);
1694 struct obd_export *lustre_find_lwp_by_index(const char *dev, __u32 idx);
1695 int tgt_name2lwp_name(const char *tgt_name, char *lwp_name, int len, __u32 idx);
1696 #endif /* HAVE_SERVER_SUPPORT */
1697 int lustre_register_fs(void);
1698 int lustre_unregister_fs(void);
1699 int lustre_check_exclusion(struct super_block *sb, char *svname);
1700
1701 /* sysctl.c */
1702 extern void obd_sysctl_init (void);
1703 extern void obd_sysctl_clean (void);
1704
1705 /* uuid.c  */
1706 typedef __u8 class_uuid_t[16];
1707 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
1708
1709 /* lustre_peer.c    */
1710 int lustre_uuid_to_peer(const char *uuid, lnet_nid_t *peer_nid, int index);
1711 int class_add_uuid(const char *uuid, __u64 nid);
1712 int class_del_uuid (const char *uuid);
1713 int class_check_uuid(struct obd_uuid *uuid, __u64 nid);
1714 void class_init_uuidlist(void);
1715 void class_exit_uuidlist(void);
1716
1717 /* prng.c */
1718 #define ll_generate_random_uuid(uuid_out) cfs_get_random_bytes(uuid_out, sizeof(class_uuid_t))
1719
1720 /* statfs_pack.c */
1721 struct kstatfs;
1722 void statfs_pack(struct obd_statfs *osfs, struct kstatfs *sfs);
1723 void statfs_unpack(struct kstatfs *sfs, struct obd_statfs *osfs);
1724
1725 /* root squash info */
1726 struct rw_semaphore;
1727 struct root_squash_info {
1728         uid_t                   rsi_uid;
1729         gid_t                   rsi_gid;
1730         struct list_head        rsi_nosquash_nids;
1731         struct rw_semaphore     rsi_sem;
1732 };
1733
1734 int server_name2index(const char *svname, __u32 *idx, const char **endptr);
1735
1736 /* linux-module.c */
1737 extern struct miscdevice obd_psdev;
1738 int class_procfs_init(void);
1739 int class_procfs_clean(void);
1740
1741 #endif /* __LINUX_OBD_CLASS_H */