lustre/include/obd_class.h

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see
  20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  30  * Use is subject to license terms.
  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 #ifndef __KERNEL__
  40 # include <liblustre.h>
  41 #endif
  42
  43 #include <obd_support.h>
  44 #include <lustre_import.h>
  45 #include <lustre_net.h>
  46 #include <obd.h>
  47 #include <lustre_lib.h>
  48 #include <lustre/lustre_idl.h>
  49 #include <lprocfs_status.h>
  50
  51 #if defined(__linux__)
  52 #include <linux/obd_class.h>
  53 #elif defined(__APPLE__)
  54 #include <darwin/obd_class.h>
  55 #elif defined(__WINNT__)
  56 #include <winnt/obd_class.h>
  57 #else
  58 #error Unsupported operating system.
  59 #endif
  60
  61 /* OBD Device Declarations */
  62 extern struct obd_device *obd_devs[MAX_OBD_DEVICES];
  63 extern cfs_spinlock_t obd_dev_lock;
  64
  65 /* OBD Operations Declarations */
  66 extern struct obd_device *class_conn2obd(struct lustre_handle *);
  67 extern struct obd_device *class_exp2obd(struct obd_export *);
  68 extern int class_handle_ioctl(unsigned int cmd, unsigned long arg);
  69
  70 struct lu_device_type;
  71
  72 /* genops.c */
  73 struct obd_export *class_conn2export(struct lustre_handle *);
  74 int class_register_type(struct obd_ops *, struct md_ops *,
  75                         struct lprocfs_vars *, const char *nm,
  76                         struct lu_device_type *ldt);
  77 int class_unregister_type(const char *nm);
  78
  79 struct obd_device *class_newdev(const char *type_name, const char *name);
  80 void class_release_dev(struct obd_device *obd);
  81
  82 int class_name2dev(const char *name);
  83 struct obd_device *class_name2obd(const char *name);
  84 int class_uuid2dev(struct obd_uuid *uuid);
  85 struct obd_device *class_uuid2obd(struct obd_uuid *uuid);
  86 void class_obd_list(void);
  87 struct obd_device * class_find_client_obd(struct obd_uuid *tgt_uuid,
  88                                           const char * typ_name,
  89                                           struct obd_uuid *grp_uuid);
  90 struct obd_device * class_devices_in_group(struct obd_uuid *grp_uuid,
  91                                            int *next);
  92 struct obd_device * class_num2obd(int num);
  93
  94 int class_notify_sptlrpc_conf(const char *fsname, int namelen);
  95
  96 char *obd_export_nid2str(struct obd_export *exp);
  97
  98 int obd_export_evict_by_nid(struct obd_device *obd, const char *nid);
  99 int obd_export_evict_by_uuid(struct obd_device *obd, const char *uuid);
 100
 101 int obd_zombie_impexp_init(void);
 102 void obd_zombie_impexp_stop(void);
 103 void obd_zombie_impexp_cull(void);
 104 void obd_zombie_barrier(void);
 105 void obd_exports_barrier(struct obd_device *obd);
 106 /* obd_config.c */
 107 int class_process_config(struct lustre_cfg *lcfg);
 108 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
 109                              struct lustre_cfg *lcfg, void *data);
 110 int class_attach(struct lustre_cfg *lcfg);
 111 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
 112 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg);
 113 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg);
 114 struct obd_device *class_incref(struct obd_device *obd,
 115                                 const char *scope, const void *source);
 116 void class_decref(struct obd_device *obd,
 117                   const char *scope, const void *source);
 118 void dump_exports(struct obd_device *obd, int locks);
 119
 120 /*obdecho*/
 121 #ifdef LPROCFS
 122 extern void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars);
 123 #else
 124 static inline void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars)
 125 {
 126         memset(lvars, 0, sizeof(*lvars));
 127 }
 128 #endif
 129
 130 #define CFG_F_START     0x01   /* Set when we start updating from a log */
 131 #define CFG_F_MARKER    0x02   /* We are within a maker */
 132 #define CFG_F_SKIP      0x04   /* We should ignore this cfg command */
 133 #define CFG_F_COMPAT146 0x08   /* Allow old-style logs */
 134 #define CFG_F_EXCLUDE   0x10   /* OST exclusion list */
 135
 136 /* Passed as data param to class_config_parse_llog */
 137 struct config_llog_instance {
 138         char *              cfg_instance;
 139         char *              cfg_obdname;
 140         struct super_block *cfg_sb;
 141         struct obd_uuid     cfg_uuid;
 142         int                 cfg_last_idx; /* for partial llog processing */
 143         int                 cfg_flags;
 144 };
 145 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
 146                             struct config_llog_instance *cfg);
 147 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
 148                            struct config_llog_instance *cfg);
 149
 150 /* list of active configuration logs  */
 151 struct config_llog_data {
 152         char                       *cld_logname;
 153         struct ldlm_res_id          cld_resid;
 154         struct config_llog_instance cld_cfg;
 155         cfs_list_t                  cld_list_chain;
 156         cfs_atomic_t                cld_refcount;
 157         struct config_llog_data    *cld_sptlrpc;/* depended sptlrpc log */
 158         struct obd_export          *cld_mgcexp;
 159         cfs_mutex_t                 cld_lock;
 160         unsigned int                cld_stopping:1, /* we were told to stop
 161                                                      * watching */
 162                                     cld_lostlock:1, /* lock not requeued */
 163                                     cld_is_sptlrpc:1;
 164 };
 165
 166 struct lustre_profile {
 167         cfs_list_t       lp_list;
 168         char            *lp_profile;
 169         char            *lp_dt;
 170         char            *lp_md;
 171 };
 172
 173 struct lustre_profile *class_get_profile(const char * prof);
 174 void class_del_profile(const char *prof);
 175 void class_del_profiles(void);
 176
 177 #if LUSTRE_TRACKS_LOCK_EXP_REFS
 178
 179 void __class_export_add_lock_ref(struct obd_export *, struct ldlm_lock *);
 180 void __class_export_del_lock_ref(struct obd_export *, struct ldlm_lock *);
 181 extern void (*class_export_dump_hook)(struct obd_export *);
 182
 183 #else
 184
 185 #define __class_export_add_lock_ref(exp, lock)             do {} while(0)
 186 #define __class_export_del_lock_ref(exp, lock)             do {} while(0)
 187
 188 #endif
 189
 190 #define class_export_rpc_get(exp)                                       \
 191 ({                                                                      \
 192         cfs_atomic_inc(&(exp)->exp_rpc_count);                          \
 193         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",    \
 194                (exp), cfs_atomic_read(&(exp)->exp_rpc_count));          \
 195         class_export_get(exp);                                          \
 196 })
 197
 198 #define class_export_rpc_put(exp)                                       \
 199 ({                                                                      \
 200         LASSERT(cfs_atomic_read(&exp->exp_rpc_count) > 0);              \
 201         cfs_atomic_dec(&(exp)->exp_rpc_count);                          \
 202         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",    \
 203                (exp), cfs_atomic_read(&(exp)->exp_rpc_count));          \
 204         class_export_put(exp);                                          \
 205 })
 206
 207 #define class_export_lock_get(exp, lock)                                \
 208 ({                                                                      \
 209         cfs_atomic_inc(&(exp)->exp_locks_count);                        \
 210         __class_export_add_lock_ref(exp, lock);                         \
 211         CDEBUG(D_INFO, "lock GETting export %p : new locks_count %d\n", \
 212                (exp), cfs_atomic_read(&(exp)->exp_locks_count));        \
 213         class_export_get(exp);                                          \
 214 })
 215
 216 #define class_export_lock_put(exp, lock)                                \
 217 ({                                                                      \
 218         LASSERT(cfs_atomic_read(&exp->exp_locks_count) > 0);            \
 219         cfs_atomic_dec(&(exp)->exp_locks_count);                        \
 220         __class_export_del_lock_ref(exp, lock);                         \
 221         CDEBUG(D_INFO, "lock PUTting export %p : new locks_count %d\n", \
 222                (exp), cfs_atomic_read(&(exp)->exp_locks_count));        \
 223         class_export_put(exp);                                          \
 224 })
 225
 226 #define class_export_cb_get(exp)                                        \
 227 ({                                                                      \
 228         cfs_atomic_inc(&(exp)->exp_cb_count);                           \
 229         CDEBUG(D_INFO, "callback GETting export %p : new cb_count %d\n",\
 230                (exp), cfs_atomic_read(&(exp)->exp_cb_count));           \
 231         class_export_get(exp);                                          \
 232 })
 233
 234 #define class_export_cb_put(exp)                                        \
 235 ({                                                                      \
 236         LASSERT(cfs_atomic_read(&exp->exp_cb_count) > 0);               \
 237         cfs_atomic_dec(&(exp)->exp_cb_count);                           \
 238         CDEBUG(D_INFO, "callback PUTting export %p : new cb_count %d\n",\
 239                (exp), cfs_atomic_read(&(exp)->exp_cb_count));           \
 240         class_export_put(exp);                                          \
 241 })
 242
 243 /* genops.c */
 244 struct obd_export *class_export_get(struct obd_export *exp);
 245 void class_export_put(struct obd_export *exp);
 246 struct obd_export *class_new_export(struct obd_device *obddev,
 247                                     struct obd_uuid *cluuid);
 248 void class_unlink_export(struct obd_export *exp);
 249
 250 struct obd_import *class_import_get(struct obd_import *);
 251 void class_import_put(struct obd_import *);
 252 struct obd_import *class_new_import(struct obd_device *obd);
 253 void class_destroy_import(struct obd_import *exp);
 254
 255 struct obd_type *class_search_type(const char *name);
 256 struct obd_type *class_get_type(const char *name);
 257 void class_put_type(struct obd_type *type);
 258 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 259                   struct obd_uuid *cluuid);
 260 int class_disconnect(struct obd_export *exp);
 261 void class_fail_export(struct obd_export *exp);
 262 int class_connected_export(struct obd_export *exp);
 263 void class_disconnect_exports(struct obd_device *obddev);
 264 int class_manual_cleanup(struct obd_device *obd);
 265 void class_disconnect_stale_exports(struct obd_device *,
 266                                     int (*test_export)(struct obd_export *));
 267 static inline enum obd_option exp_flags_from_obd(struct obd_device *obd)
 268 {
 269         return ((obd->obd_fail ? OBD_OPT_FAILOVER : 0) |
 270                 (obd->obd_force ? OBD_OPT_FORCE : 0) |
 271                 (obd->obd_abort_recovery ? OBD_OPT_ABORT_RECOV : 0) |
 272                 0);
 273 }
 274
 275 static inline struct lu_target *class_exp2tgt(struct obd_export *exp)
 276 {
 277         LASSERT(exp->exp_obd);
 278         return exp->exp_obd->u.obt.obt_lut;
 279 }
 280
 281 static inline struct lr_server_data *class_server_data(struct obd_device *obd)
 282 {
 283         LASSERT(obd->u.obt.obt_lut);
 284         return &obd->u.obt.obt_lut->lut_lsd;
 285 }
 286
 287 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_flag valid);
 288 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
 289 void obdo_from_iattr(struct obdo *oa, struct iattr *attr,
 290                      unsigned int ia_valid);
 291 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, obd_flag valid);
 292 void md_from_obdo(struct md_op_data *op_data, struct obdo *oa, obd_flag valid);
 293 void obdo_from_md(struct obdo *oa, struct md_op_data *op_data,
 294                   unsigned int valid);
 295
 296 #define OBT(dev)        (dev)->obd_type
 297 #define OBP(dev, op)    (dev)->obd_type->typ_dt_ops->o_ ## op
 298 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
 299 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 300
 301 /* Ensure obd_setup: used for cleanup which must be called
 302    while obd is stopping */
 303 #define OBD_CHECK_DEV(obd)                                      \
 304 do {                                                            \
 305         if (!(obd)) {                                           \
 306                 CERROR("NULL device\n");                        \
 307                 RETURN(-ENODEV);                                \
 308         }                                                       \
 309 } while (0)
 310
 311 /* ensure obd_setup and !obd_stopping */
 312 #define OBD_CHECK_DEV_ACTIVE(obd)                               \
 313 do {                                                            \
 314         OBD_CHECK_DEV(obd);                                     \
 315         if (!(obd)->obd_set_up || (obd)->obd_stopping) {        \
 316                 CERROR("Device %d not setup\n",                 \
 317                        (obd)->obd_minor);                       \
 318                 RETURN(-ENODEV);                                \
 319         }                                                       \
 320 } while (0)
 321
 322
 323 #ifdef LPROCFS
 324 #define OBD_COUNTER_OFFSET(op)                                  \
 325         ((offsetof(struct obd_ops, o_ ## op) -                  \
 326           offsetof(struct obd_ops, o_iocontrol))                \
 327          / sizeof(((struct obd_ops *)(0))->o_iocontrol))
 328
 329 #define OBD_COUNTER_INCREMENT(obdx, op)                           \
 330         if ((obdx)->obd_stats != NULL) {                          \
 331                 unsigned int coffset;                             \
 332                 coffset = (unsigned int)((obdx)->obd_cntr_base) + \
 333                         OBD_COUNTER_OFFSET(op);                   \
 334                 LASSERT(coffset < (obdx)->obd_stats->ls_num);     \
 335                 lprocfs_counter_incr((obdx)->obd_stats, coffset); \
 336         }
 337
 338 #define EXP_COUNTER_INCREMENT(export, op)                                    \
 339         if ((export)->exp_obd->obd_stats != NULL) {                          \
 340                 unsigned int coffset;                                        \
 341                 coffset = (unsigned int)((export)->exp_obd->obd_cntr_base) + \
 342                         OBD_COUNTER_OFFSET(op);                              \
 343                 LASSERT(coffset < (export)->exp_obd->obd_stats->ls_num);     \
 344                 lprocfs_counter_incr((export)->exp_obd->obd_stats, coffset); \
 345                 if ((export)->exp_nid_stats != NULL &&                       \
 346                     (export)->exp_nid_stats->nid_stats != NULL)              \
 347                         lprocfs_counter_incr(                                \
 348                                 (export)->exp_nid_stats->nid_stats, coffset);\
 349         }
 350
 351 #define MD_COUNTER_OFFSET(op)                                   \
 352         ((offsetof(struct md_ops, m_ ## op) -                   \
 353           offsetof(struct md_ops, m_getstatus))                 \
 354          / sizeof(((struct md_ops *)(0))->m_getstatus))
 355
 356 #define MD_COUNTER_INCREMENT(obdx, op)                           \
 357         if ((obd)->md_stats != NULL) {                           \
 358                 unsigned int coffset;                            \
 359                 coffset = (unsigned int)((obdx)->md_cntr_base) + \
 360                         MD_COUNTER_OFFSET(op);                   \
 361                 LASSERT(coffset < (obdx)->md_stats->ls_num);     \
 362                 lprocfs_counter_incr((obdx)->md_stats, coffset); \
 363         }
 364
 365 #define EXP_MD_COUNTER_INCREMENT(export, op)                                 \
 366         if ((export)->exp_obd->obd_stats != NULL) {                          \
 367                 unsigned int coffset;                                        \
 368                 coffset = (unsigned int)((export)->exp_obd->md_cntr_base) +  \
 369                         MD_COUNTER_OFFSET(op);                               \
 370                 LASSERT(coffset < (export)->exp_obd->md_stats->ls_num);      \
 371                 lprocfs_counter_incr((export)->exp_obd->md_stats, coffset);  \
 372                 if ((export)->exp_md_stats != NULL)                          \
 373                         lprocfs_counter_incr(                                \
 374                                 (export)->exp_md_stats, coffset);            \
 375         }
 376
 377 #else
 378 #define OBD_COUNTER_OFFSET(op)
 379 #define OBD_COUNTER_INCREMENT(obd, op)
 380 #define EXP_COUNTER_INCREMENT(exp, op)
 381 #define MD_COUNTER_INCREMENT(obd, op)
 382 #define EXP_MD_COUNTER_INCREMENT(exp, op)
 383 #endif
 384
 385 static inline int lprocfs_nid_ldlm_stats_init(struct nid_stat* tmp) {
 386         /* Always add in ldlm_stats */
 387         tmp->nid_ldlm_stats = lprocfs_alloc_stats(LDLM_LAST_OPC - LDLM_FIRST_OPC
 388                                                   ,LPROCFS_STATS_FLAG_NOPERCPU);
 389         if (tmp->nid_ldlm_stats == NULL)
 390                 return -ENOMEM;
 391
 392         lprocfs_init_ldlm_stats(tmp->nid_ldlm_stats);
 393
 394         return lprocfs_register_stats(tmp->nid_proc, "ldlm_stats",
 395                                       tmp->nid_ldlm_stats);
 396 }
 397
 398 #define OBD_CHECK_MD_OP(obd, op, err)                           \
 399 do {                                                            \
 400         if (!OBT(obd) || !MDP((obd), op)) {                     \
 401                 if (err)                                        \
 402                         CERROR("md_" #op ": dev %s/%d no operation\n", \
 403                                obd->obd_name, obd->obd_minor);  \
 404                 RETURN(err);                                    \
 405         }                                                       \
 406 } while (0)
 407
 408 #define EXP_CHECK_MD_OP(exp, op)                                \
 409 do {                                                            \
 410         if ((exp) == NULL) {                                    \
 411                 CERROR("obd_" #op ": NULL export\n");           \
 412                 RETURN(-ENODEV);                                \
 413         }                                                       \
 414         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 415                 CERROR("obd_" #op ": cleaned up obd\n");        \
 416                 RETURN(-EOPNOTSUPP);                            \
 417         }                                                       \
 418         if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
 419                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 420                        (exp)->exp_obd->obd_name,                \
 421                        (exp)->exp_obd->obd_minor);              \
 422                 RETURN(-EOPNOTSUPP);                            \
 423         }                                                       \
 424 } while (0)
 425
 426
 427 #define OBD_CHECK_DT_OP(obd, op, err)                           \
 428 do {                                                            \
 429         if (!OBT(obd) || !OBP((obd), op)) {                     \
 430                 if (err)                                        \
 431                         CERROR("obd_" #op ": dev %d no operation\n",    \
 432                                obd->obd_minor);                 \
 433                 RETURN(err);                                    \
 434         }                                                       \
 435 } while (0)
 436
 437 #define EXP_CHECK_DT_OP(exp, op)                                \
 438 do {                                                            \
 439         if ((exp) == NULL) {                                    \
 440                 CERROR("obd_" #op ": NULL export\n");           \
 441                 RETURN(-ENODEV);                                \
 442         }                                                       \
 443         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 444                 CERROR("obd_" #op ": cleaned up obd\n");        \
 445                 RETURN(-EOPNOTSUPP);                            \
 446         }                                                       \
 447         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 448                 CERROR("obd_" #op ": dev %d no operation\n",    \
 449                        (exp)->exp_obd->obd_minor);              \
 450                 RETURN(-EOPNOTSUPP);                            \
 451         }                                                       \
 452 } while (0)
 453
 454 #define CTXT_CHECK_OP(ctxt, op, err)                                 \
 455 do {                                                                 \
 456         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {             \
 457                 if (err)                                             \
 458                         CERROR("lop_" #op ": dev %d no operation\n", \
 459                                ctxt->loc_obd->obd_minor);            \
 460                 RETURN(err);                                         \
 461         }                                                            \
 462 } while (0)
 463
 464 static inline int class_devno_max(void)
 465 {
 466         return MAX_OBD_DEVICES;
 467 }
 468
 469 static inline int obd_get_info(struct obd_export *exp, __u32 keylen,
 470                                void *key, __u32 *vallen, void *val,
 471                                struct lov_stripe_md *lsm)
 472 {
 473         int rc;
 474         ENTRY;
 475
 476         EXP_CHECK_DT_OP(exp, get_info);
 477         EXP_COUNTER_INCREMENT(exp, get_info);
 478
 479         rc = OBP(exp->exp_obd, get_info)(exp, keylen, key, vallen, val, lsm);
 480         RETURN(rc);
 481 }
 482
 483 static inline int obd_set_info_async(struct obd_export *exp, obd_count keylen,
 484                                      void *key, obd_count vallen, void *val,
 485                                      struct ptlrpc_request_set *set)
 486 {
 487         int rc;
 488         ENTRY;
 489
 490         EXP_CHECK_DT_OP(exp, set_info_async);
 491         EXP_COUNTER_INCREMENT(exp, set_info_async);
 492
 493         rc = OBP(exp->exp_obd, set_info_async)(exp, keylen, key, vallen, val,
 494                                                set);
 495         RETURN(rc);
 496 }
 497
 498 /*
 499  * obd-lu integration.
 500  *
 501  * Functionality is being moved into new lu_device-based layering, but some
 502  * pieces of configuration process are still based on obd devices.
 503  *
 504  * Specifically, lu_device_type_operations::ldto_device_alloc() methods fully
 505  * subsume ->o_setup() methods of obd devices they replace. The same for
 506  * lu_device_operations::ldo_process_config() and ->o_process_config(). As a
 507  * result, obd_setup() and obd_process_config() branch and call one XOR
 508  * another.
 509  *
 510  * Yet neither lu_device_type_operations::ldto_device_fini() nor
 511  * lu_device_type_operations::ldto_device_free() fully implement the
 512  * functionality of ->o_precleanup() and ->o_cleanup() they override. Hence,
 513  * obd_precleanup() and obd_cleanup() call both lu_device and obd operations.
 514  */
 515
 516 #define DECLARE_LU_VARS(ldt, d)                 \
 517         struct lu_device_type *ldt;       \
 518         struct lu_device *d
 519
 520 static inline int obd_setup(struct obd_device *obd, struct lustre_cfg *cfg)
 521 {
 522         int rc;
 523         DECLARE_LU_VARS(ldt, d);
 524         ENTRY;
 525
 526         ldt = obd->obd_type->typ_lu;
 527         if (ldt != NULL) {
 528                 struct lu_context  session_ctx;
 529                 struct lu_env env;
 530                 lu_context_init(&session_ctx, LCT_SESSION);
 531                 session_ctx.lc_thread = NULL;
 532                 lu_context_enter(&session_ctx);
 533
 534                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 535                 if (rc == 0) {
 536                         env.le_ses = &session_ctx;
 537                         d = ldt->ldt_ops->ldto_device_alloc(&env, ldt, cfg);
 538                         lu_env_fini(&env);
 539                         if (!IS_ERR(d)) {
 540                                 obd->obd_lu_dev = d;
 541                                 d->ld_obd = obd;
 542                                 rc = 0;
 543                         } else
 544                                 rc = PTR_ERR(d);
 545                 }
 546                 lu_context_exit(&session_ctx);
 547                 lu_context_fini(&session_ctx);
 548
 549         } else {
 550                 OBD_CHECK_DT_OP(obd, setup, -EOPNOTSUPP);
 551                 OBD_COUNTER_INCREMENT(obd, setup);
 552                 rc = OBP(obd, setup)(obd, cfg);
 553         }
 554         RETURN(rc);
 555 }
 556
 557 static inline int obd_precleanup(struct obd_device *obd,
 558                                  enum obd_cleanup_stage cleanup_stage)
 559 {
 560         int rc;
 561         DECLARE_LU_VARS(ldt, d);
 562         ENTRY;
 563
 564         OBD_CHECK_DEV(obd);
 565         ldt = obd->obd_type->typ_lu;
 566         d = obd->obd_lu_dev;
 567         if (ldt != NULL && d != NULL) {
 568                 if (cleanup_stage == OBD_CLEANUP_EXPORTS) {
 569                         struct lu_env env;
 570
 571                         rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 572                         if (rc == 0) {
 573                                 ldt->ldt_ops->ldto_device_fini(&env, d);
 574                                 lu_env_fini(&env);
 575                         }
 576                 }
 577         }
 578         OBD_CHECK_DT_OP(obd, precleanup, 0);
 579         OBD_COUNTER_INCREMENT(obd, precleanup);
 580
 581         rc = OBP(obd, precleanup)(obd, cleanup_stage);
 582         RETURN(rc);
 583 }
 584
 585 static inline int obd_cleanup(struct obd_device *obd)
 586 {
 587         int rc;
 588         DECLARE_LU_VARS(ldt, d);
 589         ENTRY;
 590
 591         OBD_CHECK_DEV(obd);
 592
 593         ldt = obd->obd_type->typ_lu;
 594         d = obd->obd_lu_dev;
 595         if (ldt != NULL && d != NULL) {
 596                 struct lu_env env;
 597
 598                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 599                 if (rc == 0) {
 600                         ldt->ldt_ops->ldto_device_free(&env, d);
 601                         lu_env_fini(&env);
 602                         obd->obd_lu_dev = NULL;
 603                 }
 604         }
 605         OBD_CHECK_DT_OP(obd, cleanup, 0);
 606         OBD_COUNTER_INCREMENT(obd, cleanup);
 607
 608         rc = OBP(obd, cleanup)(obd);
 609         RETURN(rc);
 610 }
 611
 612 static inline int
 613 obd_process_config(struct obd_device *obd, int datalen, void *data)
 614 {
 615         int rc;
 616         DECLARE_LU_VARS(ldt, d);
 617         ENTRY;
 618
 619         OBD_CHECK_DEV(obd);
 620
 621         obd->obd_process_conf = 1;
 622         ldt = obd->obd_type->typ_lu;
 623         d = obd->obd_lu_dev;
 624         if (ldt != NULL && d != NULL) {
 625                 struct lu_env env;
 626
 627                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 628                 if (rc == 0) {
 629                         rc = d->ld_ops->ldo_process_config(&env, d, data);
 630                         lu_env_fini(&env);
 631                 }
 632         } else {
 633                 OBD_CHECK_DT_OP(obd, process_config, -EOPNOTSUPP);
 634                 rc = OBP(obd, process_config)(obd, datalen, data);
 635         }
 636         OBD_COUNTER_INCREMENT(obd, process_config);
 637         obd->obd_process_conf = 0;
 638
 639         RETURN(rc);
 640 }
 641
 642 /* Pack an in-memory MD struct for storage on disk.
 643  * Returns +ve size of packed MD (0 for free), or -ve error.
 644  *
 645  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 646  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 647  * If @*disk_tgt == NULL, it will be allocated
 648  */
 649 static inline int obd_packmd(struct obd_export *exp,
 650                              struct lov_mds_md **disk_tgt,
 651                              struct lov_stripe_md *mem_src)
 652 {
 653         int rc;
 654         ENTRY;
 655
 656         EXP_CHECK_DT_OP(exp, packmd);
 657         EXP_COUNTER_INCREMENT(exp, packmd);
 658
 659         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 660         RETURN(rc);
 661 }
 662
 663 static inline int obd_size_diskmd(struct obd_export *exp,
 664                                   struct lov_stripe_md *mem_src)
 665 {
 666         return obd_packmd(exp, NULL, mem_src);
 667 }
 668
 669 /* helper functions */
 670 static inline int obd_alloc_diskmd(struct obd_export *exp,
 671                                    struct lov_mds_md **disk_tgt)
 672 {
 673         LASSERT(disk_tgt);
 674         LASSERT(*disk_tgt == NULL);
 675         return obd_packmd(exp, disk_tgt, NULL);
 676 }
 677
 678 static inline int obd_free_diskmd(struct obd_export *exp,
 679                                   struct lov_mds_md **disk_tgt)
 680 {
 681         LASSERT(disk_tgt);
 682         LASSERT(*disk_tgt);
 683         return obd_packmd(exp, disk_tgt, NULL);
 684 }
 685
 686 /* Unpack an MD struct from disk to in-memory format.
 687  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 688  *
 689  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 690  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 691  * If @*mem_tgt == NULL, it will be allocated
 692  */
 693 static inline int obd_unpackmd(struct obd_export *exp,
 694                                struct lov_stripe_md **mem_tgt,
 695                                struct lov_mds_md *disk_src,
 696                                int disk_len)
 697 {
 698         int rc;
 699         ENTRY;
 700
 701         EXP_CHECK_DT_OP(exp, unpackmd);
 702         EXP_COUNTER_INCREMENT(exp, unpackmd);
 703
 704         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 705         RETURN(rc);
 706 }
 707
 708 /* helper functions */
 709 static inline int obd_alloc_memmd(struct obd_export *exp,
 710                                   struct lov_stripe_md **mem_tgt)
 711 {
 712         LASSERT(mem_tgt);
 713         LASSERT(*mem_tgt == NULL);
 714         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 715 }
 716
 717 static inline int obd_free_memmd(struct obd_export *exp,
 718                                  struct lov_stripe_md **mem_tgt)
 719 {
 720         int rc;
 721
 722         LASSERT(mem_tgt);
 723         LASSERT(*mem_tgt);
 724         rc = obd_unpackmd(exp, mem_tgt, NULL, 0);
 725         *mem_tgt = NULL;
 726         return rc;
 727 }
 728
 729 static inline int obd_precreate(struct obd_export *exp)
 730 {
 731         int rc;
 732         ENTRY;
 733
 734         EXP_CHECK_DT_OP(exp, precreate);
 735         OBD_COUNTER_INCREMENT(exp->exp_obd, precreate);
 736
 737         rc = OBP(exp->exp_obd, precreate)(exp);
 738         RETURN(rc);
 739 }
 740
 741 static inline int obd_create_async(struct obd_export *exp,
 742                                    struct obd_info *oinfo,
 743                                    struct lov_stripe_md **ea,
 744                                    struct obd_trans_info *oti)
 745 {
 746         int rc;
 747         ENTRY;
 748
 749         EXP_CHECK_DT_OP(exp, create_async);
 750         EXP_COUNTER_INCREMENT(exp, create_async);
 751
 752         rc = OBP(exp->exp_obd, create_async)(exp, oinfo, ea, oti);
 753         RETURN(rc);
 754 }
 755
 756 static inline int obd_create(struct obd_export *exp, struct obdo *obdo,
 757                              struct lov_stripe_md **ea,
 758                              struct obd_trans_info *oti)
 759 {
 760         int rc;
 761         ENTRY;
 762
 763         EXP_CHECK_DT_OP(exp, create);
 764         EXP_COUNTER_INCREMENT(exp, create);
 765
 766         rc = OBP(exp->exp_obd, create)(exp, obdo, ea, oti);
 767         RETURN(rc);
 768 }
 769
 770 static inline int obd_destroy(struct obd_export *exp, struct obdo *obdo,
 771                               struct lov_stripe_md *ea,
 772                               struct obd_trans_info *oti,
 773                               struct obd_export *md_exp, void *capa)
 774 {
 775         int rc;
 776         ENTRY;
 777
 778         EXP_CHECK_DT_OP(exp, destroy);
 779         EXP_COUNTER_INCREMENT(exp, destroy);
 780
 781         rc = OBP(exp->exp_obd, destroy)(exp, obdo, ea, oti, md_exp, capa);
 782         RETURN(rc);
 783 }
 784
 785 static inline int obd_getattr(struct obd_export *exp, struct obd_info *oinfo)
 786 {
 787         int rc;
 788         ENTRY;
 789
 790         EXP_CHECK_DT_OP(exp, getattr);
 791         EXP_COUNTER_INCREMENT(exp, getattr);
 792
 793         rc = OBP(exp->exp_obd, getattr)(exp, oinfo);
 794         RETURN(rc);
 795 }
 796
 797 static inline int obd_getattr_async(struct obd_export *exp,
 798                                     struct obd_info *oinfo,
 799                                     struct ptlrpc_request_set *set)
 800 {
 801         int rc;
 802         ENTRY;
 803
 804         EXP_CHECK_DT_OP(exp, getattr_async);
 805         EXP_COUNTER_INCREMENT(exp, getattr_async);
 806
 807         rc = OBP(exp->exp_obd, getattr_async)(exp, oinfo, set);
 808         RETURN(rc);
 809 }
 810
 811 static inline int obd_setattr(struct obd_export *exp, struct obd_info *oinfo,
 812                               struct obd_trans_info *oti)
 813 {
 814         int rc;
 815         ENTRY;
 816
 817         EXP_CHECK_DT_OP(exp, setattr);
 818         EXP_COUNTER_INCREMENT(exp, setattr);
 819
 820         rc = OBP(exp->exp_obd, setattr)(exp, oinfo, oti);
 821         RETURN(rc);
 822 }
 823
 824 /* This performs all the requests set init/wait/destroy actions. */
 825 static inline int obd_setattr_rqset(struct obd_export *exp,
 826                                     struct obd_info *oinfo,
 827                                     struct obd_trans_info *oti)
 828 {
 829         struct ptlrpc_request_set *set = NULL;
 830         int rc;
 831         ENTRY;
 832
 833         EXP_CHECK_DT_OP(exp, setattr_async);
 834         EXP_COUNTER_INCREMENT(exp, setattr_async);
 835
 836         set =  ptlrpc_prep_set();
 837         if (set == NULL)
 838                 RETURN(-ENOMEM);
 839
 840         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 841         if (rc == 0)
 842                 rc = ptlrpc_set_wait(set);
 843         ptlrpc_set_destroy(set);
 844         RETURN(rc);
 845 }
 846
 847 /* This adds all the requests into @set if @set != NULL, otherwise
 848    all requests are sent asynchronously without waiting for response. */
 849 static inline int obd_setattr_async(struct obd_export *exp,
 850                                     struct obd_info *oinfo,
 851                                     struct obd_trans_info *oti,
 852                                     struct ptlrpc_request_set *set)
 853 {
 854         int rc;
 855         ENTRY;
 856
 857         EXP_CHECK_DT_OP(exp, setattr_async);
 858         EXP_COUNTER_INCREMENT(exp, setattr_async);
 859
 860         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 861         RETURN(rc);
 862 }
 863
 864 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 865                                int priority)
 866 {
 867         struct obd_device *obd = imp->imp_obd;
 868         int rc;
 869         ENTRY;
 870
 871         OBD_CHECK_DEV_ACTIVE(obd);
 872         OBD_CHECK_DT_OP(obd, add_conn, -EOPNOTSUPP);
 873         OBD_COUNTER_INCREMENT(obd, add_conn);
 874
 875         rc = OBP(obd, add_conn)(imp, uuid, priority);
 876         RETURN(rc);
 877 }
 878
 879 static inline int obd_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
 880 {
 881         struct obd_device *obd = imp->imp_obd;
 882         int rc;
 883         ENTRY;
 884
 885         OBD_CHECK_DEV_ACTIVE(obd);
 886         OBD_CHECK_DT_OP(obd, del_conn, -EOPNOTSUPP);
 887         OBD_COUNTER_INCREMENT(obd, del_conn);
 888
 889         rc = OBP(obd, del_conn)(imp, uuid);
 890         RETURN(rc);
 891 }
 892
 893 static inline struct obd_uuid *obd_get_uuid(struct obd_export *exp)
 894 {
 895         struct obd_uuid *uuid;
 896         ENTRY;
 897
 898         OBD_CHECK_DT_OP(exp->exp_obd, get_uuid, NULL);
 899         EXP_COUNTER_INCREMENT(exp, get_uuid);
 900
 901         uuid = OBP(exp->exp_obd, get_uuid)(exp);
 902         RETURN(uuid);
 903 }
 904
 905 /** Create a new /a exp on device /a obd for the uuid /a cluuid
 906  * @param exp New export handle
 907  * @param d Connect data, supported flags are set, flags also understood
 908  *    by obd are returned.
 909  */
 910 static inline int obd_connect(const struct lu_env *env,
 911                               struct obd_export **exp,struct obd_device *obd,
 912                               struct obd_uuid *cluuid,
 913                               struct obd_connect_data *d,
 914                               void *localdata)
 915 {
 916         int rc;
 917         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 918                                                    * check */
 919         ENTRY;
 920
 921         OBD_CHECK_DEV_ACTIVE(obd);
 922         OBD_CHECK_DT_OP(obd, connect, -EOPNOTSUPP);
 923         OBD_COUNTER_INCREMENT(obd, connect);
 924
 925         rc = OBP(obd, connect)(env, exp, obd, cluuid, d, localdata);
 926         /* check that only subset is granted */
 927         LASSERT(ergo(d != NULL,
 928                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 929         RETURN(rc);
 930 }
 931
 932 static inline int obd_reconnect(const struct lu_env *env,
 933                                 struct obd_export *exp,
 934                                 struct obd_device *obd,
 935                                 struct obd_uuid *cluuid,
 936                                 struct obd_connect_data *d,
 937                                 void *localdata)
 938 {
 939         int rc;
 940         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 941                                                    * check */
 942
 943         ENTRY;
 944
 945         OBD_CHECK_DEV_ACTIVE(obd);
 946         OBD_CHECK_DT_OP(obd, reconnect, 0);
 947         OBD_COUNTER_INCREMENT(obd, reconnect);
 948
 949         rc = OBP(obd, reconnect)(env, exp, obd, cluuid, d, localdata);
 950         /* check that only subset is granted */
 951         LASSERT(ergo(d != NULL,
 952                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 953         RETURN(rc);
 954 }
 955
 956 static inline int obd_disconnect(struct obd_export *exp)
 957 {
 958         int rc;
 959         ENTRY;
 960
 961         EXP_CHECK_DT_OP(exp, disconnect);
 962         EXP_COUNTER_INCREMENT(exp, disconnect);
 963
 964         rc = OBP(exp->exp_obd, disconnect)(exp);
 965         RETURN(rc);
 966 }
 967
 968 static inline int obd_fid_init(struct obd_export *exp)
 969 {
 970         int rc;
 971         ENTRY;
 972
 973         OBD_CHECK_DT_OP(exp->exp_obd, fid_init, 0);
 974         EXP_COUNTER_INCREMENT(exp, fid_init);
 975
 976         rc = OBP(exp->exp_obd, fid_init)(exp);
 977         RETURN(rc);
 978 }
 979
 980 static inline int obd_fid_fini(struct obd_export *exp)
 981 {
 982         int rc;
 983         ENTRY;
 984
 985         OBD_CHECK_DT_OP(exp->exp_obd, fid_fini, 0);
 986         EXP_COUNTER_INCREMENT(exp, fid_fini);
 987
 988         rc = OBP(exp->exp_obd, fid_fini)(exp);
 989         RETURN(rc);
 990 }
 991
 992 static inline int obd_fid_alloc(struct obd_export *exp,
 993                                 struct lu_fid *fid,
 994                                 struct md_op_data *op_data)
 995 {
 996         int rc;
 997         ENTRY;
 998
 999         EXP_CHECK_DT_OP(exp, fid_alloc);
1000         EXP_COUNTER_INCREMENT(exp, fid_alloc);
1001
1002         rc = OBP(exp->exp_obd, fid_alloc)(exp, fid, op_data);
1003         RETURN(rc);
1004 }
1005
1006 static inline int obd_fid_delete(struct obd_export *exp,
1007                                  const struct lu_fid *fid)
1008 {
1009         int rc;
1010         ENTRY;
1011
1012         EXP_CHECK_DT_OP(exp, fid_delete);
1013         EXP_COUNTER_INCREMENT(exp, fid_delete);
1014
1015         rc = OBP(exp->exp_obd, fid_delete)(exp, fid);
1016         RETURN(rc);
1017 }
1018
1019 static inline int obd_ping(struct obd_export *exp)
1020 {
1021         int rc;
1022         ENTRY;
1023
1024         OBD_CHECK_DT_OP(exp->exp_obd, ping, 0);
1025         EXP_COUNTER_INCREMENT(exp, ping);
1026
1027         rc = OBP(exp->exp_obd, ping)(exp);
1028         RETURN(rc);
1029 }
1030
1031 static inline int obd_pool_new(struct obd_device *obd, char *poolname)
1032 {
1033         int rc;
1034         ENTRY;
1035
1036         OBD_CHECK_DT_OP(obd, pool_new, -EOPNOTSUPP);
1037         OBD_COUNTER_INCREMENT(obd, pool_new);
1038
1039         rc = OBP(obd, pool_new)(obd, poolname);
1040         RETURN(rc);
1041 }
1042
1043 static inline int obd_pool_del(struct obd_device *obd, char *poolname)
1044 {
1045         int rc;
1046         ENTRY;
1047
1048         OBD_CHECK_DT_OP(obd, pool_del, -EOPNOTSUPP);
1049         OBD_COUNTER_INCREMENT(obd, pool_del);
1050
1051         rc = OBP(obd, pool_del)(obd, poolname);
1052         RETURN(rc);
1053 }
1054
1055 static inline int obd_pool_add(struct obd_device *obd, char *poolname, char *ostname)
1056 {
1057         int rc;
1058         ENTRY;
1059
1060         OBD_CHECK_DT_OP(obd, pool_add, -EOPNOTSUPP);
1061         OBD_COUNTER_INCREMENT(obd, pool_add);
1062
1063         rc = OBP(obd, pool_add)(obd, poolname, ostname);
1064         RETURN(rc);
1065 }
1066
1067 static inline int obd_pool_rem(struct obd_device *obd, char *poolname, char *ostname)
1068 {
1069         int rc;
1070         ENTRY;
1071
1072         OBD_CHECK_DT_OP(obd, pool_rem, -EOPNOTSUPP);
1073         OBD_COUNTER_INCREMENT(obd, pool_rem);
1074
1075         rc = OBP(obd, pool_rem)(obd, poolname, ostname);
1076         RETURN(rc);
1077 }
1078
1079 static inline void obd_getref(struct obd_device *obd)
1080 {
1081         ENTRY;
1082         if (OBT(obd) && OBP(obd, getref)) {
1083                 OBD_COUNTER_INCREMENT(obd, getref);
1084                 OBP(obd, getref)(obd);
1085         }
1086         EXIT;
1087 }
1088
1089 static inline void obd_putref(struct obd_device *obd)
1090 {
1091         ENTRY;
1092         if (OBT(obd) && OBP(obd, putref)) {
1093                 OBD_COUNTER_INCREMENT(obd, putref);
1094                 OBP(obd, putref)(obd);
1095         }
1096         EXIT;
1097 }
1098
1099 static inline int obd_init_export(struct obd_export *exp)
1100 {
1101         int rc = 0;
1102
1103         ENTRY;
1104         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
1105             OBP((exp)->exp_obd, init_export))
1106                 rc = OBP(exp->exp_obd, init_export)(exp);
1107         RETURN(rc);
1108 }
1109
1110 static inline int obd_destroy_export(struct obd_export *exp)
1111 {
1112         ENTRY;
1113         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
1114             OBP((exp)->exp_obd, destroy_export))
1115                 OBP(exp->exp_obd, destroy_export)(exp);
1116         RETURN(0);
1117 }
1118
1119 static inline int obd_extent_calc(struct obd_export *exp,
1120                                   struct lov_stripe_md *md,
1121                                   int cmd, obd_off *offset)
1122 {
1123         int rc;
1124         ENTRY;
1125         EXP_CHECK_DT_OP(exp, extent_calc);
1126         rc = OBP(exp->exp_obd, extent_calc)(exp, md, cmd, offset);
1127         RETURN(rc);
1128 }
1129
1130 static inline struct dentry *
1131 obd_lvfs_fid2dentry(struct obd_export *exp, __u64 id_ino, __u32 gen, __u64 gr)
1132 {
1133         LASSERT(exp->exp_obd);
1134
1135         return lvfs_fid2dentry(&exp->exp_obd->obd_lvfs_ctxt, id_ino, gen, gr,
1136                                exp->exp_obd);
1137 }
1138
1139 static inline int
1140 obd_lvfs_open_llog(struct obd_export *exp, __u64 id_ino, struct dentry *dentry)
1141 {
1142         LASSERT(exp->exp_obd);
1143         CERROR("FIXME what's the story here?  This needs to be an obd fn?\n");
1144 #if 0
1145         return lvfs_open_llog(&exp->exp_obd->obd_lvfs_ctxt, id_ino,
1146                               dentry, exp->exp_obd);
1147 #endif
1148         return 0;
1149 }
1150
1151 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1152  * If the cache is older than @max_age we will get a new value from the
1153  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1154 static inline int obd_statfs_async(struct obd_device *obd,
1155                                    struct obd_info *oinfo,
1156                                    __u64 max_age,
1157                                    struct ptlrpc_request_set *rqset)
1158 {
1159         int rc = 0;
1160         ENTRY;
1161
1162         if (obd == NULL)
1163                 RETURN(-EINVAL);
1164
1165         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1166         OBD_COUNTER_INCREMENT(obd, statfs);
1167
1168         CDEBUG(D_SUPER, "%s: osfs %p age "LPU64", max_age "LPU64"\n",
1169                obd->obd_name, &obd->obd_osfs, obd->obd_osfs_age, max_age);
1170         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1171                 rc = OBP(obd, statfs_async)(obd, oinfo, max_age, rqset);
1172         } else {
1173                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1174                        " objects "LPU64"/"LPU64"\n",
1175                        obd->obd_name, &obd->obd_osfs,
1176                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1177                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1178                 cfs_spin_lock(&obd->obd_osfs_lock);
1179                 memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
1180                 cfs_spin_unlock(&obd->obd_osfs_lock);
1181                 oinfo->oi_flags |= OBD_STATFS_FROM_CACHE;
1182                 if (oinfo->oi_cb_up)
1183                         oinfo->oi_cb_up(oinfo, 0);
1184         }
1185         RETURN(rc);
1186 }
1187
1188 static inline int obd_statfs_rqset(struct obd_device *obd,
1189                                    struct obd_statfs *osfs, __u64 max_age,
1190                                    __u32 flags)
1191 {
1192         struct ptlrpc_request_set *set = NULL;
1193         struct obd_info oinfo = { { { 0 } } };
1194         int rc = 0;
1195         ENTRY;
1196
1197         set =  ptlrpc_prep_set();
1198         if (set == NULL)
1199                 RETURN(-ENOMEM);
1200
1201         oinfo.oi_osfs = osfs;
1202         oinfo.oi_flags = flags;
1203         rc = obd_statfs_async(obd, &oinfo, max_age, set);
1204         if (rc == 0)
1205                 rc = ptlrpc_set_wait(set);
1206         ptlrpc_set_destroy(set);
1207         RETURN(rc);
1208 }
1209
1210 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1211  * If the cache is older than @max_age we will get a new value from the
1212  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1213 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
1214                              __u64 max_age, __u32 flags)
1215 {
1216         int rc = 0;
1217         ENTRY;
1218
1219         if (obd == NULL)
1220                 RETURN(-EINVAL);
1221
1222         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1223         OBD_COUNTER_INCREMENT(obd, statfs);
1224
1225         CDEBUG(D_SUPER, "osfs "LPU64", max_age "LPU64"\n",
1226                obd->obd_osfs_age, max_age);
1227         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1228                 rc = OBP(obd, statfs)(obd, osfs, max_age, flags);
1229                 if (rc == 0) {
1230                         cfs_spin_lock(&obd->obd_osfs_lock);
1231                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
1232                         obd->obd_osfs_age = cfs_time_current_64();
1233                         cfs_spin_unlock(&obd->obd_osfs_lock);
1234                 }
1235         } else {
1236                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1237                        " objects "LPU64"/"LPU64"\n",
1238                        obd->obd_name, &obd->obd_osfs,
1239                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1240                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1241                 cfs_spin_lock(&obd->obd_osfs_lock);
1242                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
1243                 cfs_spin_unlock(&obd->obd_osfs_lock);
1244         }
1245         RETURN(rc);
1246 }
1247
1248 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
1249                            struct lov_stripe_md *ea, obd_size start,
1250                            obd_size end, void *capa)
1251 {
1252         int rc;
1253         ENTRY;
1254
1255         OBD_CHECK_DT_OP(exp->exp_obd, sync, -EOPNOTSUPP);
1256         EXP_COUNTER_INCREMENT(exp, sync);
1257
1258         rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end, capa);
1259         RETURN(rc);
1260 }
1261
1262 static inline int obd_sync_fs(struct obd_device *obd, struct obd_info *oinfo,
1263                               int wait)
1264 {
1265         int rc;
1266         ENTRY;
1267
1268         OBD_CHECK_DT_OP(obd, sync_fs, -EOPNOTSUPP);
1269         OBD_COUNTER_INCREMENT(obd, sync);
1270
1271         rc = OBP(obd, sync_fs)(obd, oinfo, wait);
1272
1273         RETURN(rc);
1274 }
1275
1276 static inline int obd_punch_rqset(struct obd_export *exp,
1277                                   struct obd_info *oinfo,
1278                                   struct obd_trans_info *oti)
1279 {
1280         struct ptlrpc_request_set *set = NULL;
1281         int rc;
1282         ENTRY;
1283
1284         EXP_CHECK_DT_OP(exp, punch);
1285         EXP_COUNTER_INCREMENT(exp, punch);
1286
1287         set =  ptlrpc_prep_set();
1288         if (set == NULL)
1289                 RETURN(-ENOMEM);
1290
1291         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, set);
1292         if (rc == 0)
1293                 rc = ptlrpc_set_wait(set);
1294         ptlrpc_set_destroy(set);
1295         RETURN(rc);
1296 }
1297
1298 static inline int obd_punch(struct obd_export *exp, struct obd_info *oinfo,
1299                             struct obd_trans_info *oti,
1300                             struct ptlrpc_request_set *rqset)
1301 {
1302         int rc;
1303         ENTRY;
1304
1305         EXP_CHECK_DT_OP(exp, punch);
1306         EXP_COUNTER_INCREMENT(exp, punch);
1307
1308         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, rqset);
1309         RETURN(rc);
1310 }
1311
1312 static inline int obd_brw(int cmd, struct obd_export *exp,
1313                           struct obd_info *oinfo, obd_count oa_bufs,
1314                           struct brw_page *pg, struct obd_trans_info *oti)
1315 {
1316         int rc;
1317         ENTRY;
1318
1319         EXP_CHECK_DT_OP(exp, brw);
1320         EXP_COUNTER_INCREMENT(exp, brw);
1321
1322         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
1323                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
1324                        "or OBD_BRW_CHECK\n");
1325                 LBUG();
1326         }
1327
1328         rc = OBP(exp->exp_obd, brw)(cmd, exp, oinfo, oa_bufs, pg, oti);
1329         RETURN(rc);
1330 }
1331
1332 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
1333                              int objcount, struct obd_ioobj *obj,
1334                              struct niobuf_remote *remote, int *pages,
1335                              struct niobuf_local *local,
1336                              struct obd_trans_info *oti,
1337                              struct lustre_capa *capa)
1338 {
1339         int rc;
1340         ENTRY;
1341
1342         EXP_CHECK_DT_OP(exp, preprw);
1343         EXP_COUNTER_INCREMENT(exp, preprw);
1344
1345         rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, remote,
1346                                        pages, local, oti, capa);
1347         RETURN(rc);
1348 }
1349
1350 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
1351                                int objcount, struct obd_ioobj *obj,
1352                                struct niobuf_remote *rnb, int pages,
1353                                struct niobuf_local *local,
1354                                struct obd_trans_info *oti, int rc)
1355 {
1356         ENTRY;
1357
1358         EXP_CHECK_DT_OP(exp, commitrw);
1359         EXP_COUNTER_INCREMENT(exp, commitrw);
1360
1361         rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj,
1362                                          rnb, pages, local, oti, rc);
1363         RETURN(rc);
1364 }
1365
1366 static inline int obd_merge_lvb(struct obd_export *exp,
1367                                 struct lov_stripe_md *lsm,
1368                                 struct ost_lvb *lvb, int kms_only)
1369 {
1370         int rc;
1371         ENTRY;
1372
1373         EXP_CHECK_DT_OP(exp, merge_lvb);
1374         EXP_COUNTER_INCREMENT(exp, merge_lvb);
1375
1376         rc = OBP(exp->exp_obd, merge_lvb)(exp, lsm, lvb, kms_only);
1377         RETURN(rc);
1378 }
1379
1380 static inline int obd_adjust_kms(struct obd_export *exp,
1381                                  struct lov_stripe_md *lsm, obd_off size,
1382                                  int shrink)
1383 {
1384         int rc;
1385         ENTRY;
1386
1387         EXP_CHECK_DT_OP(exp, adjust_kms);
1388         EXP_COUNTER_INCREMENT(exp, adjust_kms);
1389
1390         rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
1391         RETURN(rc);
1392 }
1393
1394 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1395                                 int len, void *karg, void *uarg)
1396 {
1397         int rc;
1398         ENTRY;
1399
1400         EXP_CHECK_DT_OP(exp, iocontrol);
1401         EXP_COUNTER_INCREMENT(exp, iocontrol);
1402
1403         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1404         RETURN(rc);
1405 }
1406
1407 static inline int obd_enqueue_rqset(struct obd_export *exp,
1408                                     struct obd_info *oinfo,
1409                                     struct ldlm_enqueue_info *einfo)
1410 {
1411         struct ptlrpc_request_set *set = NULL;
1412         int rc;
1413         ENTRY;
1414
1415         EXP_CHECK_DT_OP(exp, enqueue);
1416         EXP_COUNTER_INCREMENT(exp, enqueue);
1417
1418         set =  ptlrpc_prep_set();
1419         if (set == NULL)
1420                 RETURN(-ENOMEM);
1421
1422         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1423         if (rc == 0)
1424                 rc = ptlrpc_set_wait(set);
1425         ptlrpc_set_destroy(set);
1426         RETURN(rc);
1427 }
1428
1429 static inline int obd_enqueue(struct obd_export *exp,
1430                               struct obd_info *oinfo,
1431                               struct ldlm_enqueue_info *einfo,
1432                               struct ptlrpc_request_set *set)
1433 {
1434         int rc;
1435         ENTRY;
1436
1437         EXP_CHECK_DT_OP(exp, enqueue);
1438         EXP_COUNTER_INCREMENT(exp, enqueue);
1439
1440         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1441         RETURN(rc);
1442 }
1443
1444 static inline int obd_change_cbdata(struct obd_export *exp,
1445                                     struct lov_stripe_md *lsm,
1446                                     ldlm_iterator_t it, void *data)
1447 {
1448         int rc;
1449         ENTRY;
1450
1451         EXP_CHECK_DT_OP(exp, change_cbdata);
1452         EXP_COUNTER_INCREMENT(exp, change_cbdata);
1453
1454         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1455         RETURN(rc);
1456 }
1457
1458 static inline int obd_find_cbdata(struct obd_export *exp,
1459                                   struct lov_stripe_md *lsm,
1460                                   ldlm_iterator_t it, void *data)
1461 {
1462         int rc;
1463         ENTRY;
1464
1465         EXP_CHECK_DT_OP(exp, find_cbdata);
1466         EXP_COUNTER_INCREMENT(exp, find_cbdata);
1467
1468         rc = OBP(exp->exp_obd, find_cbdata)(exp, lsm, it, data);
1469         RETURN(rc);
1470 }
1471
1472 static inline int obd_cancel(struct obd_export *exp,
1473                              struct lov_stripe_md *ea, __u32 mode,
1474                              struct lustre_handle *lockh)
1475 {
1476         int rc;
1477         ENTRY;
1478
1479         EXP_CHECK_DT_OP(exp, cancel);
1480         EXP_COUNTER_INCREMENT(exp, cancel);
1481
1482         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1483         RETURN(rc);
1484 }
1485
1486 static inline int obd_cancel_unused(struct obd_export *exp,
1487                                     struct lov_stripe_md *ea,
1488                                     ldlm_cancel_flags_t flags,
1489                                     void *opaque)
1490 {
1491         int rc;
1492         ENTRY;
1493
1494         EXP_CHECK_DT_OP(exp, cancel_unused);
1495         EXP_COUNTER_INCREMENT(exp, cancel_unused);
1496
1497         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1498         RETURN(rc);
1499 }
1500
1501 static inline int obd_pin(struct obd_export *exp, const struct lu_fid *fid,
1502                           struct obd_capa *oc, struct obd_client_handle *handle,
1503                           int flag)
1504 {
1505         int rc;
1506         ENTRY;
1507
1508         EXP_CHECK_DT_OP(exp, pin);
1509         EXP_COUNTER_INCREMENT(exp, pin);
1510
1511         rc = OBP(exp->exp_obd, pin)(exp, fid, oc, handle, flag);
1512         RETURN(rc);
1513 }
1514
1515 static inline int obd_unpin(struct obd_export *exp,
1516                             struct obd_client_handle *handle, int flag)
1517 {
1518         int rc;
1519         ENTRY;
1520
1521         EXP_CHECK_DT_OP(exp, unpin);
1522         EXP_COUNTER_INCREMENT(exp, unpin);
1523
1524         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1525         RETURN(rc);
1526 }
1527
1528
1529 static inline void obd_import_event(struct obd_device *obd,
1530                                     struct obd_import *imp,
1531                                     enum obd_import_event event)
1532 {
1533         ENTRY;
1534         if (!obd) {
1535                 CERROR("NULL device\n");
1536                 EXIT;
1537                 return;
1538         }
1539         if (obd->obd_set_up && OBP(obd, import_event)) {
1540                 OBD_COUNTER_INCREMENT(obd, import_event);
1541                 OBP(obd, import_event)(obd, imp, event);
1542         }
1543         EXIT;
1544 }
1545
1546 static inline int obd_llog_connect(struct obd_export *exp,
1547                                    struct llogd_conn_body *body)
1548 {
1549         int rc;
1550         ENTRY;
1551
1552         OBD_CHECK_DT_OP(exp->exp_obd, llog_connect, 0);
1553         EXP_COUNTER_INCREMENT(exp, llog_connect);
1554
1555         rc = OBP(exp->exp_obd, llog_connect)(exp, body);
1556         RETURN(rc);
1557 }
1558
1559
1560 static inline int obd_notify(struct obd_device *obd,
1561                              struct obd_device *watched,
1562                              enum obd_notify_event ev,
1563                              void *data)
1564 {
1565         int rc;
1566         ENTRY;
1567         OBD_CHECK_DEV(obd);
1568
1569         /* the check for async_recov is a complete hack - I'm hereby
1570            overloading the meaning to also mean "this was called from
1571            mds_postsetup".  I know that my mds is able to handle notifies
1572            by this point, and it needs to get them to execute mds_postrecov. */
1573         if (!obd->obd_set_up && !obd->obd_async_recov) {
1574                 CDEBUG(D_HA, "obd %s not set up\n", obd->obd_name);
1575                 RETURN(-EINVAL);
1576         }
1577
1578         if (!OBP(obd, notify)) {
1579                 CERROR("obd %s has no notify handler\n", obd->obd_name);
1580                 RETURN(-ENOSYS);
1581         }
1582
1583         OBD_COUNTER_INCREMENT(obd, notify);
1584         rc = OBP(obd, notify)(obd, watched, ev, data);
1585         RETURN(rc);
1586 }
1587
1588 static inline int obd_notify_observer(struct obd_device *observer,
1589                                       struct obd_device *observed,
1590                                       enum obd_notify_event ev,
1591                                       void *data)
1592 {
1593         int rc1;
1594         int rc2;
1595
1596         struct obd_notify_upcall *onu;
1597
1598         if (observer->obd_observer)
1599                 rc1 = obd_notify(observer->obd_observer, observed, ev, data);
1600         else
1601                 rc1 = 0;
1602         /*
1603          * Also, call non-obd listener, if any
1604          */
1605         onu = &observer->obd_upcall;
1606         if (onu->onu_upcall != NULL)
1607                 rc2 = onu->onu_upcall(observer, observed, ev,
1608                                       onu->onu_owner, NULL);
1609         else
1610                 rc2 = 0;
1611
1612         return rc1 ? rc1 : rc2;
1613 }
1614
1615 static inline int obd_quotacheck(struct obd_export *exp,
1616                                  struct obd_quotactl *oqctl)
1617 {
1618         int rc;
1619         ENTRY;
1620
1621         EXP_CHECK_DT_OP(exp, quotacheck);
1622         EXP_COUNTER_INCREMENT(exp, quotacheck);
1623
1624         rc = OBP(exp->exp_obd, quotacheck)(exp->exp_obd, exp, oqctl);
1625         RETURN(rc);
1626 }
1627
1628 static inline int obd_quotactl(struct obd_export *exp,
1629                                struct obd_quotactl *oqctl)
1630 {
1631         int rc;
1632         ENTRY;
1633
1634         EXP_CHECK_DT_OP(exp, quotactl);
1635         EXP_COUNTER_INCREMENT(exp, quotactl);
1636
1637         rc = OBP(exp->exp_obd, quotactl)(exp->exp_obd, exp, oqctl);
1638         RETURN(rc);
1639 }
1640
1641 static inline int obd_quota_adjust_qunit(struct obd_export *exp,
1642                                          struct quota_adjust_qunit *oqaq,
1643                                          struct lustre_quota_ctxt *qctxt,
1644                                          struct ptlrpc_request_set *set)
1645 {
1646 #if defined(LPROCFS) && defined(HAVE_QUOTA_SUPPORT)
1647         struct timeval work_start;
1648         struct timeval work_end;
1649         long timediff;
1650 #endif
1651         int rc;
1652         ENTRY;
1653
1654 #if defined(LPROCFS) && defined(HAVE_QUOTA_SUPPORT)
1655         if (qctxt)
1656                 cfs_gettimeofday(&work_start);
1657 #endif
1658         EXP_CHECK_DT_OP(exp, quota_adjust_qunit);
1659         EXP_COUNTER_INCREMENT(exp, quota_adjust_qunit);
1660
1661         rc = OBP(exp->exp_obd, quota_adjust_qunit)(exp, oqaq, qctxt, set);
1662
1663 #if defined(LPROCFS) && defined(HAVE_QUOTA_SUPPORT)
1664         if (qctxt) {
1665                 cfs_gettimeofday(&work_end);
1666                 timediff = cfs_timeval_sub(&work_end, &work_start, NULL);
1667                 lprocfs_counter_add(qctxt->lqc_stats, LQUOTA_ADJUST_QUNIT,
1668                                     timediff);
1669         }
1670 #endif
1671         RETURN(rc);
1672 }
1673
1674 static inline int obd_health_check(struct obd_device *obd)
1675 {
1676         /* returns: 0 on healthy
1677          *         >0 on unhealthy + reason code/flag
1678          *            however the only suppored reason == 1 right now
1679          *            We'll need to define some better reasons
1680          *            or flags in the future.
1681          *         <0 on error
1682          */
1683         int rc;
1684         ENTRY;
1685
1686         /* don't use EXP_CHECK_DT_OP, because NULL method is normal here */
1687         if (obd == NULL || !OBT(obd)) {
1688                 CERROR("cleaned up obd\n");
1689                 RETURN(-EOPNOTSUPP);
1690         }
1691         if (!obd->obd_set_up || obd->obd_stopping)
1692                 RETURN(0);
1693         if (!OBP(obd, health_check))
1694                 RETURN(0);
1695
1696         rc = OBP(obd, health_check)(obd);
1697         RETURN(rc);
1698 }
1699
1700 static inline int obd_register_observer(struct obd_device *obd,
1701                                         struct obd_device *observer)
1702 {
1703         ENTRY;
1704         OBD_CHECK_DEV(obd);
1705         cfs_down_write(&obd->obd_observer_link_sem);
1706         if (obd->obd_observer && observer) {
1707                 cfs_up_write(&obd->obd_observer_link_sem);
1708                 RETURN(-EALREADY);
1709         }
1710         obd->obd_observer = observer;
1711         cfs_up_write(&obd->obd_observer_link_sem);
1712         RETURN(0);
1713 }
1714
1715 static inline int obd_pin_observer(struct obd_device *obd,
1716                                    struct obd_device **observer)
1717 {
1718         ENTRY;
1719         cfs_down_read(&obd->obd_observer_link_sem);
1720         if (!obd->obd_observer) {
1721                 *observer = NULL;
1722                 cfs_up_read(&obd->obd_observer_link_sem);
1723                 RETURN(-ENOENT);
1724         }
1725         *observer = obd->obd_observer;
1726         RETURN(0);
1727 }
1728
1729 static inline int obd_unpin_observer(struct obd_device *obd)
1730 {
1731         ENTRY;
1732         cfs_up_read(&obd->obd_observer_link_sem);
1733         RETURN(0);
1734 }
1735
1736 #if 0
1737 static inline int obd_register_page_removal_cb(struct obd_export *exp,
1738                                                obd_page_removal_cb_t cb,
1739                                                obd_pin_extent_cb pin_cb)
1740 {
1741         int rc;
1742         ENTRY;
1743
1744         OBD_CHECK_DT_OP(exp->exp_obd, register_page_removal_cb, 0);
1745         OBD_COUNTER_INCREMENT(exp->exp_obd, register_page_removal_cb);
1746
1747         rc = OBP(exp->exp_obd, register_page_removal_cb)(exp, cb, pin_cb);
1748         RETURN(rc);
1749 }
1750
1751 static inline int obd_unregister_page_removal_cb(struct obd_export *exp,
1752                                                  obd_page_removal_cb_t cb)
1753 {
1754         int rc;
1755         ENTRY;
1756
1757         OBD_CHECK_DT_OP(exp->exp_obd, unregister_page_removal_cb, 0);
1758         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_page_removal_cb);
1759
1760         rc = OBP(exp->exp_obd, unregister_page_removal_cb)(exp, cb);
1761         RETURN(rc);
1762 }
1763
1764 static inline int obd_register_lock_cancel_cb(struct obd_export *exp,
1765                                               obd_lock_cancel_cb cb)
1766 {
1767         int rc;
1768         ENTRY;
1769
1770         OBD_CHECK_DT_OP(exp->exp_obd, register_lock_cancel_cb, 0);
1771         OBD_COUNTER_INCREMENT(exp->exp_obd, register_lock_cancel_cb);
1772
1773         rc = OBP(exp->exp_obd, register_lock_cancel_cb)(exp, cb);
1774         RETURN(rc);
1775 }
1776
1777 static inline int obd_unregister_lock_cancel_cb(struct obd_export *exp,
1778                                                  obd_lock_cancel_cb cb)
1779 {
1780         int rc;
1781         ENTRY;
1782
1783         OBD_CHECK_DT_OP(exp->exp_obd, unregister_lock_cancel_cb, 0);
1784         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_lock_cancel_cb);
1785
1786         rc = OBP(exp->exp_obd, unregister_lock_cancel_cb)(exp, cb);
1787         RETURN(rc);
1788 }
1789 #endif
1790
1791 /* metadata helpers */
1792 static inline int md_getstatus(struct obd_export *exp,
1793                                struct lu_fid *fid, struct obd_capa **pc)
1794 {
1795         int rc;
1796         ENTRY;
1797
1798         EXP_CHECK_MD_OP(exp, getstatus);
1799         EXP_MD_COUNTER_INCREMENT(exp, getstatus);
1800         rc = MDP(exp->exp_obd, getstatus)(exp, fid, pc);
1801         RETURN(rc);
1802 }
1803
1804 static inline int md_getattr(struct obd_export *exp, struct md_op_data *op_data,
1805                              struct ptlrpc_request **request)
1806 {
1807         int rc;
1808         ENTRY;
1809         EXP_CHECK_MD_OP(exp, getattr);
1810         EXP_MD_COUNTER_INCREMENT(exp, getattr);
1811         rc = MDP(exp->exp_obd, getattr)(exp, op_data, request);
1812         RETURN(rc);
1813 }
1814
1815 static inline int md_change_cbdata(struct obd_export *exp,
1816                                    const struct lu_fid *fid,
1817                                    ldlm_iterator_t it, void *data)
1818 {
1819         int rc;
1820         ENTRY;
1821         EXP_CHECK_MD_OP(exp, change_cbdata);
1822         EXP_MD_COUNTER_INCREMENT(exp, change_cbdata);
1823         rc = MDP(exp->exp_obd, change_cbdata)(exp, fid, it, data);
1824         RETURN(rc);
1825 }
1826
1827 static inline int md_find_cbdata(struct obd_export *exp,
1828                                  const struct lu_fid *fid,
1829                                  ldlm_iterator_t it, void *data)
1830 {
1831         int rc;
1832         ENTRY;
1833         EXP_CHECK_MD_OP(exp, find_cbdata);
1834         EXP_MD_COUNTER_INCREMENT(exp, find_cbdata);
1835         rc = MDP(exp->exp_obd, find_cbdata)(exp, fid, it, data);
1836         RETURN(rc);
1837 }
1838
1839 static inline int md_close(struct obd_export *exp, struct md_op_data *op_data,
1840                            struct md_open_data *mod,
1841                            struct ptlrpc_request **request)
1842 {
1843         int rc;
1844         ENTRY;
1845         EXP_CHECK_MD_OP(exp, close);
1846         EXP_MD_COUNTER_INCREMENT(exp, close);
1847         rc = MDP(exp->exp_obd, close)(exp, op_data, mod, request);
1848         RETURN(rc);
1849 }
1850
1851 static inline int md_create(struct obd_export *exp, struct md_op_data *op_data,
1852                             const void *data, int datalen, int mode, __u32 uid,
1853                             __u32 gid, cfs_cap_t cap_effective, __u64 rdev,
1854                             struct ptlrpc_request **request)
1855 {
1856         int rc;
1857         ENTRY;
1858         EXP_CHECK_MD_OP(exp, create);
1859         EXP_MD_COUNTER_INCREMENT(exp, create);
1860         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1861                                        uid, gid, cap_effective, rdev, request);
1862         RETURN(rc);
1863 }
1864
1865 static inline int md_done_writing(struct obd_export *exp,
1866                                   struct md_op_data *op_data,
1867                                   struct md_open_data *mod)
1868 {
1869         int rc;
1870         ENTRY;
1871         EXP_CHECK_MD_OP(exp, done_writing);
1872         EXP_MD_COUNTER_INCREMENT(exp, done_writing);
1873         rc = MDP(exp->exp_obd, done_writing)(exp, op_data, mod);
1874         RETURN(rc);
1875 }
1876
1877 static inline int md_enqueue(struct obd_export *exp,
1878                              struct ldlm_enqueue_info *einfo,
1879                              struct lookup_intent *it,
1880                              struct md_op_data *op_data,
1881                              struct lustre_handle *lockh,
1882                              void *lmm, int lmmsize,
1883                              struct ptlrpc_request **req,
1884                              int extra_lock_flags)
1885 {
1886         int rc;
1887         ENTRY;
1888         EXP_CHECK_MD_OP(exp, enqueue);
1889         EXP_MD_COUNTER_INCREMENT(exp, enqueue);
1890         rc = MDP(exp->exp_obd, enqueue)(exp, einfo, it, op_data, lockh,
1891                                         lmm, lmmsize, req, extra_lock_flags);
1892         RETURN(rc);
1893 }
1894
1895 static inline int md_getattr_name(struct obd_export *exp,
1896                                   struct md_op_data *op_data,
1897                                   struct ptlrpc_request **request)
1898 {
1899         int rc;
1900         ENTRY;
1901         EXP_CHECK_MD_OP(exp, getattr_name);
1902         EXP_MD_COUNTER_INCREMENT(exp, getattr_name);
1903         rc = MDP(exp->exp_obd, getattr_name)(exp, op_data, request);
1904         RETURN(rc);
1905 }
1906
1907 static inline int md_intent_lock(struct obd_export *exp,
1908                                  struct md_op_data *op_data, void *lmm,
1909                                  int lmmsize, struct lookup_intent *it,
1910                                  int flags, struct ptlrpc_request **reqp,
1911                                  ldlm_blocking_callback cb_blocking,
1912                                  int extra_lock_flags)
1913 {
1914         int rc;
1915         ENTRY;
1916         EXP_CHECK_MD_OP(exp, intent_lock);
1917         EXP_MD_COUNTER_INCREMENT(exp, intent_lock);
1918         rc = MDP(exp->exp_obd, intent_lock)(exp, op_data, lmm, lmmsize,
1919                                             it, flags, reqp, cb_blocking,
1920                                             extra_lock_flags);
1921         RETURN(rc);
1922 }
1923
1924 static inline int md_link(struct obd_export *exp, struct md_op_data *op_data,
1925                           struct ptlrpc_request **request)
1926 {
1927         int rc;
1928         ENTRY;
1929         EXP_CHECK_MD_OP(exp, link);
1930         EXP_MD_COUNTER_INCREMENT(exp, link);
1931         rc = MDP(exp->exp_obd, link)(exp, op_data, request);
1932         RETURN(rc);
1933 }
1934
1935 static inline int md_rename(struct obd_export *exp, struct md_op_data *op_data,
1936                             const char *old, int oldlen, const char *new,
1937                             int newlen, struct ptlrpc_request **request)
1938 {
1939         int rc;
1940         ENTRY;
1941         EXP_CHECK_MD_OP(exp, rename);
1942         EXP_MD_COUNTER_INCREMENT(exp, rename);
1943         rc = MDP(exp->exp_obd, rename)(exp, op_data, old, oldlen, new,
1944                                        newlen, request);
1945         RETURN(rc);
1946 }
1947
1948 static inline int md_is_subdir(struct obd_export *exp,
1949                                const struct lu_fid *pfid,
1950                                const struct lu_fid *cfid,
1951                                struct ptlrpc_request **request)
1952 {
1953         int rc;
1954         ENTRY;
1955         EXP_CHECK_MD_OP(exp, is_subdir);
1956         EXP_MD_COUNTER_INCREMENT(exp, is_subdir);
1957         rc = MDP(exp->exp_obd, is_subdir)(exp, pfid, cfid, request);
1958         RETURN(rc);
1959 }
1960
1961 static inline int md_setattr(struct obd_export *exp, struct md_op_data *op_data,
1962                              void *ea, int ealen, void *ea2, int ea2len,
1963                              struct ptlrpc_request **request,
1964                              struct md_open_data **mod)
1965 {
1966         int rc;
1967         ENTRY;
1968         EXP_CHECK_MD_OP(exp, setattr);
1969         EXP_MD_COUNTER_INCREMENT(exp, setattr);
1970         rc = MDP(exp->exp_obd, setattr)(exp, op_data, ea, ealen,
1971                                         ea2, ea2len, request, mod);
1972         RETURN(rc);
1973 }
1974
1975 static inline int md_sync(struct obd_export *exp, const struct lu_fid *fid,
1976                           struct obd_capa *oc, struct ptlrpc_request **request)
1977 {
1978         int rc;
1979         ENTRY;
1980         EXP_CHECK_MD_OP(exp, sync);
1981         EXP_MD_COUNTER_INCREMENT(exp, sync);
1982         rc = MDP(exp->exp_obd, sync)(exp, fid, oc, request);
1983         RETURN(rc);
1984 }
1985
1986 static inline int md_readpage(struct obd_export *exp, const struct lu_fid *fid,
1987                               struct obd_capa *oc, __u64 offset,
1988                               struct page *page,
1989                               struct ptlrpc_request **request)
1990 {
1991         int rc;
1992         ENTRY;
1993         EXP_CHECK_MD_OP(exp, readpage);
1994         EXP_MD_COUNTER_INCREMENT(exp, readpage);
1995         rc = MDP(exp->exp_obd, readpage)(exp, fid, oc, offset, page, request);
1996         RETURN(rc);
1997 }
1998
1999 static inline int md_unlink(struct obd_export *exp, struct md_op_data *op_data,
2000                             struct ptlrpc_request **request)
2001 {
2002         int rc;
2003         ENTRY;
2004         EXP_CHECK_MD_OP(exp, unlink);
2005         EXP_MD_COUNTER_INCREMENT(exp, unlink);
2006         rc = MDP(exp->exp_obd, unlink)(exp, op_data, request);
2007         RETURN(rc);
2008 }
2009
2010 static inline int md_get_lustre_md(struct obd_export *exp,
2011                                    struct ptlrpc_request *req,
2012                                    struct obd_export *dt_exp,
2013                                    struct obd_export *md_exp,
2014                                    struct lustre_md *md)
2015 {
2016         ENTRY;
2017         EXP_CHECK_MD_OP(exp, get_lustre_md);
2018         EXP_MD_COUNTER_INCREMENT(exp, get_lustre_md);
2019         RETURN(MDP(exp->exp_obd, get_lustre_md)(exp, req, dt_exp, md_exp, md));
2020 }
2021
2022 static inline int md_free_lustre_md(struct obd_export *exp,
2023                                     struct lustre_md *md)
2024 {
2025         ENTRY;
2026         EXP_CHECK_MD_OP(exp, free_lustre_md);
2027         EXP_MD_COUNTER_INCREMENT(exp, free_lustre_md);
2028         RETURN(MDP(exp->exp_obd, free_lustre_md)(exp, md));
2029 }
2030
2031 static inline int md_setxattr(struct obd_export *exp,
2032                               const struct lu_fid *fid, struct obd_capa *oc,
2033                               obd_valid valid, const char *name,
2034                               const char *input, int input_size,
2035                               int output_size, int flags, __u32 suppgid,
2036                               struct ptlrpc_request **request)
2037 {
2038         ENTRY;
2039         EXP_CHECK_MD_OP(exp, setxattr);
2040         EXP_MD_COUNTER_INCREMENT(exp, setxattr);
2041         RETURN(MDP(exp->exp_obd, setxattr)(exp, fid, oc, valid, name, input,
2042                                            input_size, output_size, flags,
2043                                            suppgid, request));
2044 }
2045
2046 static inline int md_getxattr(struct obd_export *exp,
2047                               const struct lu_fid *fid, struct obd_capa *oc,
2048                               obd_valid valid, const char *name,
2049                               const char *input, int input_size,
2050                               int output_size, int flags,
2051                               struct ptlrpc_request **request)
2052 {
2053         ENTRY;
2054         EXP_CHECK_MD_OP(exp, getxattr);
2055         EXP_MD_COUNTER_INCREMENT(exp, getxattr);
2056         RETURN(MDP(exp->exp_obd, getxattr)(exp, fid, oc, valid, name, input,
2057                                            input_size, output_size, flags,
2058                                            request));
2059 }
2060
2061 static inline int md_set_open_replay_data(struct obd_export *exp,
2062                                           struct obd_client_handle *och,
2063                                           struct ptlrpc_request *open_req)
2064 {
2065         ENTRY;
2066         EXP_CHECK_MD_OP(exp, set_open_replay_data);
2067         EXP_MD_COUNTER_INCREMENT(exp, set_open_replay_data);
2068         RETURN(MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req));
2069 }
2070
2071 static inline int md_clear_open_replay_data(struct obd_export *exp,
2072                                             struct obd_client_handle *och)
2073 {
2074         ENTRY;
2075         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
2076         EXP_MD_COUNTER_INCREMENT(exp, clear_open_replay_data);
2077         RETURN(MDP(exp->exp_obd, clear_open_replay_data)(exp, och));
2078 }
2079
2080 static inline int md_set_lock_data(struct obd_export *exp,
2081                                    __u64 *lockh, void *data, __u32 *bits)
2082 {
2083         ENTRY;
2084         EXP_CHECK_MD_OP(exp, set_lock_data);
2085         EXP_MD_COUNTER_INCREMENT(exp, set_lock_data);
2086         RETURN(MDP(exp->exp_obd, set_lock_data)(exp, lockh, data, bits));
2087 }
2088
2089 static inline int md_cancel_unused(struct obd_export *exp,
2090                                    const struct lu_fid *fid,
2091                                    ldlm_policy_data_t *policy,
2092                                    ldlm_mode_t mode,
2093                                    ldlm_cancel_flags_t flags,
2094                                    void *opaque)
2095 {
2096         int rc;
2097         ENTRY;
2098
2099         EXP_CHECK_MD_OP(exp, cancel_unused);
2100         EXP_MD_COUNTER_INCREMENT(exp, cancel_unused);
2101
2102         rc = MDP(exp->exp_obd, cancel_unused)(exp, fid, policy, mode,
2103                                               flags, opaque);
2104         RETURN(rc);
2105 }
2106
2107 static inline ldlm_mode_t md_lock_match(struct obd_export *exp, int flags,
2108                                         const struct lu_fid *fid,
2109                                         ldlm_type_t type,
2110                                         ldlm_policy_data_t *policy,
2111                                         ldlm_mode_t mode,
2112                                         struct lustre_handle *lockh)
2113 {
2114         ENTRY;
2115         EXP_CHECK_MD_OP(exp, lock_match);
2116         EXP_MD_COUNTER_INCREMENT(exp, lock_match);
2117         RETURN(MDP(exp->exp_obd, lock_match)(exp, flags, fid, type,
2118                                              policy, mode, lockh));
2119 }
2120
2121 static inline int md_init_ea_size(struct obd_export *exp, int easize,
2122                                   int def_asize, int cookiesize)
2123 {
2124         ENTRY;
2125         EXP_CHECK_MD_OP(exp, init_ea_size);
2126         EXP_MD_COUNTER_INCREMENT(exp, init_ea_size);
2127         RETURN(MDP(exp->exp_obd, init_ea_size)(exp, easize, def_asize,
2128                                                cookiesize));
2129 }
2130
2131 static inline int md_get_remote_perm(struct obd_export *exp,
2132                                      const struct lu_fid *fid,
2133                                      struct obd_capa *oc, __u32 suppgid,
2134                                      struct ptlrpc_request **request)
2135 {
2136         ENTRY;
2137         EXP_CHECK_MD_OP(exp, get_remote_perm);
2138         EXP_MD_COUNTER_INCREMENT(exp, get_remote_perm);
2139         RETURN(MDP(exp->exp_obd, get_remote_perm)(exp, fid, oc, suppgid,
2140                                                   request));
2141 }
2142
2143 static inline int md_renew_capa(struct obd_export *exp, struct obd_capa *ocapa,
2144                                 renew_capa_cb_t cb)
2145 {
2146         int rc;
2147         ENTRY;
2148         EXP_CHECK_MD_OP(exp, renew_capa);
2149         EXP_MD_COUNTER_INCREMENT(exp, renew_capa);
2150         rc = MDP(exp->exp_obd, renew_capa)(exp, ocapa, cb);
2151         RETURN(rc);
2152 }
2153
2154 static inline int md_unpack_capa(struct obd_export *exp,
2155                                  struct ptlrpc_request *req,
2156                                  const struct req_msg_field *field,
2157                                  struct obd_capa **oc)
2158 {
2159         int rc;
2160         ENTRY;
2161         EXP_CHECK_MD_OP(exp, unpack_capa);
2162         EXP_MD_COUNTER_INCREMENT(exp, unpack_capa);
2163         rc = MDP(exp->exp_obd, unpack_capa)(exp, req, field, oc);
2164         RETURN(rc);
2165 }
2166
2167 static inline int md_intent_getattr_async(struct obd_export *exp,
2168                                           struct md_enqueue_info *minfo,
2169                                           struct ldlm_enqueue_info *einfo)
2170 {
2171         int rc;
2172         ENTRY;
2173         EXP_CHECK_MD_OP(exp, intent_getattr_async);
2174         EXP_MD_COUNTER_INCREMENT(exp, intent_getattr_async);
2175         rc = MDP(exp->exp_obd, intent_getattr_async)(exp, minfo, einfo);
2176         RETURN(rc);
2177 }
2178
2179 static inline int md_revalidate_lock(struct obd_export *exp,
2180                                      struct lookup_intent *it,
2181                                      struct lu_fid *fid, __u32 *bits)
2182 {
2183         int rc;
2184         ENTRY;
2185         EXP_CHECK_MD_OP(exp, revalidate_lock);
2186         EXP_MD_COUNTER_INCREMENT(exp, revalidate_lock);
2187         rc = MDP(exp->exp_obd, revalidate_lock)(exp, it, fid, bits);
2188         RETURN(rc);
2189 }
2190
2191
2192 /* OBD Metadata Support */
2193
2194 extern int obd_init_caches(void);
2195 extern void obd_cleanup_caches(void);
2196
2197 /* support routines */
2198 extern cfs_mem_cache_t *obdo_cachep;
2199
2200 #define OBDO_ALLOC(ptr)                                                       \
2201 do {                                                                          \
2202         OBD_SLAB_ALLOC_PTR_GFP((ptr), obdo_cachep, CFS_ALLOC_IO);             \
2203 } while(0)
2204
2205 #define OBDO_FREE(ptr)                                                        \
2206 do {                                                                          \
2207         OBD_SLAB_FREE_PTR((ptr), obdo_cachep);                                \
2208 } while(0)
2209
2210
2211 static inline void obdo2fid(struct obdo *oa, struct lu_fid *fid)
2212 {
2213         /* something here */
2214 }
2215
2216 static inline void fid2obdo(struct lu_fid *fid, struct obdo *oa)
2217 {
2218         /* something here */
2219 }
2220
2221 /* I'm as embarrassed about this as you are.
2222  *
2223  * <shaver> // XXX do not look into _superhack with remaining eye
2224  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
2225 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
2226
2227 /* sysctl.c */
2228 extern void obd_sysctl_init (void);
2229 extern void obd_sysctl_clean (void);
2230
2231 /* uuid.c  */
2232 typedef __u8 class_uuid_t[16];
2233 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
2234
2235 /* lustre_peer.c    */
2236 int lustre_uuid_to_peer(const char *uuid, lnet_nid_t *peer_nid, int index);
2237 int class_add_uuid(const char *uuid, __u64 nid);
2238 int class_del_uuid (const char *uuid);
2239 void class_init_uuidlist(void);
2240 void class_exit_uuidlist(void);
2241
2242 /* mea.c */
2243 int mea_name2idx(struct lmv_stripe_md *mea, const char *name, int namelen);
2244 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
2245
2246 /* prng.c */
2247 #define ll_generate_random_uuid(uuid_out) cfs_get_random_bytes(uuid_out, sizeof(class_uuid_t))
2248
2249 #endif /* __LINUX_OBD_CLASS_H */