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  *  Copyright (C) 2001-2003 Cluster File Systems, Inc.
   5  *
   6  *   This file is part of Lustre, http://www.lustre.org.
   7  *
   8  *   Lustre is free software; you can redistribute it and/or
   9  *   modify it under the terms of version 2 of the GNU General Public
  10  *   License as published by the Free Software Foundation.
  11  *
  12  *   Lustre is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *   GNU General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU General Public License
  18  *   along with Lustre; if not, write to the Free Software
  19  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  *
  21  */
  22
  23 #ifndef __CLASS_OBD_H
  24 #define __CLASS_OBD_H
  25
  26 #ifndef __KERNEL__
  27 # include <liblustre.h>
  28 #endif
  29
  30 #include <obd_support.h>
  31 #include <lustre_import.h>
  32 #include <lustre_net.h>
  33 #include <obd.h>
  34 #include <lustre_lib.h>
  35 #include <lustre/lustre_idl.h>
  36 #include <lprocfs_status.h>
  37
  38 #if defined(__linux__)
  39 #include <linux/obd_class.h>
  40 #elif defined(__APPLE__)
  41 #include <darwin/obd_class.h>
  42 #elif defined(__WINNT__)
  43 #include <winnt/obd_class.h>
  44 #else
  45 #error Unsupported operating system.
  46 #endif
  47
  48 /* OBD Device Declarations */
  49 extern struct obd_device *obd_devs[MAX_OBD_DEVICES];
  50 extern spinlock_t obd_dev_lock;
  51
  52 /* OBD Operations Declarations */
  53 extern struct obd_device *class_conn2obd(struct lustre_handle *);
  54 extern struct obd_device *class_exp2obd(struct obd_export *);
  55
  56 struct lu_device_type;
  57
  58 /* genops.c */
  59 struct obd_export *class_conn2export(struct lustre_handle *);
  60 int class_register_type(struct obd_ops *, struct md_ops *,
  61                         struct lprocfs_vars *, const char *nm,
  62                         struct lu_device_type *ldt);
  63 int class_unregister_type(const char *nm);
  64
  65 struct obd_device *class_newdev(const char *type_name, const char *name);
  66 void class_release_dev(struct obd_device *obd);
  67
  68 int class_name2dev(const char *name);
  69 struct obd_device *class_name2obd(const char *name);
  70 int class_uuid2dev(struct obd_uuid *uuid);
  71 struct obd_device *class_uuid2obd(struct obd_uuid *uuid);
  72 void class_obd_list(void);
  73 struct obd_device * class_find_client_obd(struct obd_uuid *tgt_uuid,
  74                                           const char * typ_name,
  75                                           struct obd_uuid *grp_uuid);
  76 struct obd_device * class_find_client_notype(struct obd_uuid *tgt_uuid,
  77                                              struct obd_uuid *grp_uuid);
  78 struct obd_device * class_devices_in_group(struct obd_uuid *grp_uuid,
  79                                            int *next);
  80 struct obd_device * class_num2obd(int num);
  81
  82 int oig_init(struct obd_io_group **oig);
  83 int oig_add_one(struct obd_io_group *oig, struct oig_callback_context *occ);
  84 void oig_complete_one(struct obd_io_group *oig,
  85                       struct oig_callback_context *occ, int rc);
  86 void oig_release(struct obd_io_group *oig);
  87 int oig_wait(struct obd_io_group *oig);
  88
  89 char *obd_export_nid2str(struct obd_export *exp);
  90
  91 int obd_export_evict_by_nid(struct obd_device *obd, const char *nid);
  92 int obd_export_evict_by_uuid(struct obd_device *obd, const char *uuid);
  93
  94 /* obd_config.c */
  95 int class_process_config(struct lustre_cfg *lcfg);
  96 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
  97                              struct lustre_cfg *lcfg, void *data);
  98 int class_attach(struct lustre_cfg *lcfg);
  99 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
 100 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg);
 101 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg);
 102 struct obd_device *class_incref(struct obd_device *obd);
 103 void class_decref(struct obd_device *obd);
 104
 105 /*obdecho*/
 106 #ifdef LPROCFS
 107 extern void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars);
 108 #else
 109 static inline void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars)
 110 {
 111         memset(lvars, 0, sizeof(*lvars));
 112 }
 113 #endif
 114
 115 #define CFG_F_START     0x01   /* Set when we start updating from a log */
 116 #define CFG_F_MARKER    0x02   /* We are within a maker */
 117 #define CFG_F_SKIP      0x04   /* We should ignore this cfg command */
 118 #define CFG_F_COMPAT146 0x08   /* Allow old-style logs */
 119 #define CFG_F_EXCLUDE   0x10   /* OST exclusion list */
 120
 121 /* Passed as data param to class_config_parse_llog */
 122 struct config_llog_instance {
 123         char *              cfg_instance;
 124         struct super_block *cfg_sb;
 125         struct obd_uuid     cfg_uuid;
 126         int                 cfg_last_idx; /* for partial llog processing */
 127         int                 cfg_flags;
 128 };
 129 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
 130                             struct config_llog_instance *cfg);
 131 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
 132                            struct config_llog_instance *cfg);
 133
 134 /* list of active configuration logs  */
 135 struct config_llog_data {
 136         char               *cld_logname;
 137         struct ldlm_res_id  cld_resid;
 138         struct config_llog_instance cld_cfg;
 139         struct list_head    cld_list_chain;
 140         atomic_t            cld_refcount;
 141         struct obd_export  *cld_mgcexp;
 142         unsigned int        cld_stopping:1, /* we were told to stop watching */
 143                             cld_lostlock:1; /* lock not requeued */
 144 };
 145
 146 struct lustre_profile {
 147         struct list_head lp_list;
 148         char            *lp_profile;
 149         char            *lp_dt;
 150         char            *lp_md;
 151 };
 152
 153 struct lustre_profile *class_get_profile(const char * prof);
 154 void class_del_profile(const char *prof);
 155 void class_del_profiles(void);
 156
 157 #define class_export_rpc_get(exp)                                       \
 158 ({                                                                      \
 159         atomic_inc(&(exp)->exp_rpc_count);                              \
 160         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",    \
 161                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 162         class_export_get(exp);                                          \
 163 })
 164
 165 #define class_export_rpc_put(exp)                                       \
 166 ({                                                                      \
 167         atomic_dec(&(exp)->exp_rpc_count);                              \
 168         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",    \
 169                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 170         class_export_put(exp);                                          \
 171 })
 172
 173 /* genops.c */
 174 #define class_export_get(exp)                                                  \
 175 ({                                                                             \
 176         struct obd_export *exp_ = exp;                                         \
 177         atomic_inc(&exp_->exp_refcount);                                       \
 178         CDEBUG(D_INFO, "GETting export %p : new refcount %d\n", exp_,          \
 179                atomic_read(&exp_->exp_refcount));                              \
 180         exp_;                                                                  \
 181 })
 182
 183 #define class_export_put(exp)                                                  \
 184 do {                                                                           \
 185         LASSERT((exp) != NULL);                                                \
 186         CDEBUG(D_INFO, "PUTting export %p : new refcount %d\n", (exp),         \
 187                atomic_read(&(exp)->exp_refcount) - 1);                         \
 188         LASSERT(atomic_read(&(exp)->exp_refcount) > 0);                        \
 189         LASSERT(atomic_read(&(exp)->exp_refcount) < 0x5a5a5a);                 \
 190         __class_export_put(exp);                                               \
 191 } while (0)
 192
 193 void __class_export_put(struct obd_export *);
 194 struct obd_export *class_new_export(struct obd_device *obddev,
 195                                     struct obd_uuid *cluuid);
 196 void class_unlink_export(struct obd_export *exp);
 197
 198 struct obd_import *class_import_get(struct obd_import *);
 199 void class_import_put(struct obd_import *);
 200 struct obd_import *class_new_import(struct obd_device *obd);
 201 void class_destroy_import(struct obd_import *exp);
 202
 203 struct obd_type *class_search_type(const char *name);
 204 struct obd_type *class_get_type(const char *name);
 205 void class_put_type(struct obd_type *type);
 206 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 207                   struct obd_uuid *cluuid);
 208 int class_disconnect(struct obd_export *exp);
 209 void class_fail_export(struct obd_export *exp);
 210 void class_disconnect_exports(struct obd_device *obddev);
 211 int class_disconnect_stale_exports(struct obd_device *,
 212                                     int (*test_export)(struct obd_export *));
 213 int class_manual_cleanup(struct obd_device *obd);
 214
 215 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_flag valid);
 216 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
 217 void obdo_from_iattr(struct obdo *oa, struct iattr *attr,
 218                      unsigned int ia_valid);
 219 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, obd_flag valid);
 220 void md_from_obdo(struct md_op_data *op_data, struct obdo *oa, obd_flag valid);
 221 void obdo_from_md(struct obdo *oa, struct md_op_data *op_data,
 222                   unsigned int valid);
 223
 224 #define OBT(dev)        (dev)->obd_type
 225 #define OBP(dev, op)    (dev)->obd_type->typ_dt_ops->o_ ## op
 226 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
 227 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 228
 229 /* Ensure obd_setup: used for cleanup which must be called
 230    while obd is stopping */
 231 #define OBD_CHECK_DEV(obd)                                      \
 232 do {                                                            \
 233         if (!(obd)) {                                           \
 234                 CERROR("NULL device\n");                        \
 235                 RETURN(-ENODEV);                                \
 236         }                                                       \
 237 } while (0)
 238
 239 /* ensure obd_setup and !obd_stopping */
 240 #define OBD_CHECK_DEV_ACTIVE(obd)                               \
 241 do {                                                            \
 242         OBD_CHECK_DEV(obd);                                     \
 243         if (!(obd)->obd_set_up || (obd)->obd_stopping) {        \
 244                 CERROR("Device %d not setup\n",                 \
 245                        (obd)->obd_minor);                       \
 246                 RETURN(-ENODEV);                                \
 247         }                                                       \
 248 } while (0)
 249
 250
 251 #ifdef LPROCFS
 252 #define OBD_COUNTER_OFFSET(op)                                  \
 253         ((offsetof(struct obd_ops, o_ ## op) -                  \
 254           offsetof(struct obd_ops, o_iocontrol))                \
 255          / sizeof(((struct obd_ops *)(0))->o_iocontrol))
 256
 257 #define OBD_COUNTER_INCREMENT(obdx, op)                           \
 258         if ((obdx)->obd_stats != NULL) {                          \
 259                 unsigned int coffset;                             \
 260                 coffset = (unsigned int)((obdx)->obd_cntr_base) + \
 261                         OBD_COUNTER_OFFSET(op);                   \
 262                 LASSERT(coffset < (obdx)->obd_stats->ls_num);     \
 263                 lprocfs_counter_incr((obdx)->obd_stats, coffset); \
 264         }
 265
 266 #define EXP_COUNTER_INCREMENT(export, op)                                    \
 267         if ((export)->exp_obd->obd_stats != NULL) {                          \
 268                 unsigned int coffset;                                        \
 269                 coffset = (unsigned int)((export)->exp_obd->obd_cntr_base) + \
 270                         OBD_COUNTER_OFFSET(op);                              \
 271                 LASSERT(coffset < (export)->exp_obd->obd_stats->ls_num);     \
 272                 lprocfs_counter_incr((export)->exp_obd->obd_stats, coffset); \
 273                 if ((export)->exp_ops_stats != NULL)                         \
 274                         lprocfs_counter_incr(                                \
 275                                 (export)->exp_ops_stats, coffset);           \
 276         }
 277
 278 #define MD_COUNTER_OFFSET(op)                                   \
 279         ((offsetof(struct md_ops, m_ ## op) -                   \
 280           offsetof(struct md_ops, m_getstatus))                 \
 281          / sizeof(((struct md_ops *)(0))->m_getstatus))
 282
 283 #define MD_COUNTER_INCREMENT(obdx, op)                           \
 284         if ((obd)->md_stats != NULL) {                           \
 285                 unsigned int coffset;                            \
 286                 coffset = (unsigned int)((obdx)->md_cntr_base) + \
 287                         MD_COUNTER_OFFSET(op);                   \
 288                 LASSERT(coffset < (obdx)->md_stats->ls_num);     \
 289                 lprocfs_counter_incr((obdx)->md_stats, coffset); \
 290         }
 291
 292 #define EXP_MD_COUNTER_INCREMENT(export, op)                                 \
 293         if ((export)->exp_obd->obd_stats != NULL) {                          \
 294                 unsigned int coffset;                                        \
 295                 coffset = (unsigned int)((export)->exp_obd->md_cntr_base) +  \
 296                         MD_COUNTER_OFFSET(op);                               \
 297                 LASSERT(coffset < (export)->exp_obd->md_stats->ls_num);      \
 298                 lprocfs_counter_incr((export)->exp_obd->md_stats, coffset);  \
 299                 if ((export)->exp_md_stats != NULL)                          \
 300                         lprocfs_counter_incr(                                \
 301                                 (export)->exp_md_stats, coffset);            \
 302         }
 303
 304 #else
 305 #define OBD_COUNTER_OFFSET(op)
 306 #define OBD_COUNTER_INCREMENT(obd, op)
 307 #define EXP_COUNTER_INCREMENT(exp, op)
 308 #define MD_COUNTER_INCREMENT(obd, op)
 309 #define EXP_MD_COUNTER_INCREMENT(exp, op)
 310 #endif
 311
 312 #define OBD_CHECK_MD_OP(obd, op, err)                           \
 313 do {                                                            \
 314         if (!OBT(obd) || !MDP((obd), op)) {                     \
 315                 if (err)                                        \
 316                         CERROR("md_" #op ": dev %s/%d no operation\n", \
 317                                obd->obd_name, obd->obd_minor);  \
 318                 RETURN(err);                                    \
 319         }                                                       \
 320 } while (0)
 321
 322 #define EXP_CHECK_MD_OP(exp, op)                                \
 323 do {                                                            \
 324         if ((exp) == NULL) {                                    \
 325                 CERROR("obd_" #op ": NULL export\n");           \
 326                 RETURN(-ENODEV);                                \
 327         }                                                       \
 328         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 329                 CERROR("obd_" #op ": cleaned up obd\n");        \
 330                 RETURN(-EOPNOTSUPP);                            \
 331         }                                                       \
 332         if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
 333                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 334                        (exp)->exp_obd->obd_name,                \
 335                        (exp)->exp_obd->obd_minor);              \
 336                 RETURN(-EOPNOTSUPP);                            \
 337         }                                                       \
 338 } while (0)
 339
 340
 341 #define OBD_CHECK_DT_OP(obd, op, err)                           \
 342 do {                                                            \
 343         if (!OBT(obd) || !OBP((obd), op)) {                     \
 344                 if (err)                                        \
 345                         CERROR("obd_" #op ": dev %d no operation\n",    \
 346                                obd->obd_minor);                 \
 347                 RETURN(err);                                    \
 348         }                                                       \
 349 } while (0)
 350
 351 #define EXP_CHECK_DT_OP(exp, op)                                \
 352 do {                                                            \
 353         if ((exp) == NULL) {                                    \
 354                 CERROR("obd_" #op ": NULL export\n");           \
 355                 RETURN(-ENODEV);                                \
 356         }                                                       \
 357         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 358                 CERROR("obd_" #op ": cleaned up obd\n");        \
 359                 RETURN(-EOPNOTSUPP);                            \
 360         }                                                       \
 361         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 362                 CERROR("obd_" #op ": dev %d no operation\n",    \
 363                        (exp)->exp_obd->obd_minor);              \
 364                 RETURN(-EOPNOTSUPP);                            \
 365         }                                                       \
 366 } while (0)
 367
 368 #define CTXT_CHECK_OP(ctxt, op, err)                                 \
 369 do {                                                                 \
 370         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {             \
 371                 if (err)                                             \
 372                         CERROR("lop_" #op ": dev %d no operation\n", \
 373                                ctxt->loc_obd->obd_minor);            \
 374                 RETURN(err);                                         \
 375         }                                                            \
 376 } while (0)
 377
 378 static inline int class_devno_max(void)
 379 {
 380         return MAX_OBD_DEVICES;
 381 }
 382
 383 static inline int obd_get_info(struct obd_export *exp, __u32 keylen,
 384                                void *key, __u32 *vallen, void *val)
 385 {
 386         int rc;
 387         ENTRY;
 388
 389         EXP_CHECK_DT_OP(exp, get_info);
 390         EXP_COUNTER_INCREMENT(exp, get_info);
 391
 392         rc = OBP(exp->exp_obd, get_info)(exp, keylen, key, vallen, val);
 393         RETURN(rc);
 394 }
 395
 396 static inline int obd_set_info_async(struct obd_export *exp, obd_count keylen,
 397                                      void *key, obd_count vallen, void *val,
 398                                      struct ptlrpc_request_set *set)
 399 {
 400         int rc;
 401         ENTRY;
 402
 403         EXP_CHECK_DT_OP(exp, set_info_async);
 404         EXP_COUNTER_INCREMENT(exp, set_info_async);
 405
 406         rc = OBP(exp->exp_obd, set_info_async)(exp, keylen, key, vallen, val,
 407                                                set);
 408         RETURN(rc);
 409 }
 410
 411 #ifdef __KERNEL__
 412 #define DECLARE_LU_VARS(ldt, d)                 \
 413         struct lu_device_type *ldt;             \
 414         struct lu_device *d
 415 #else
 416 #define DECLARE_LU_VARS(ldt, d)                                 \
 417         extern void __placeholder_to_put_a_semicolon(void)
 418 #endif
 419 static inline int obd_setup(struct obd_device *obd, struct lustre_cfg *cfg)
 420 {
 421         int rc;
 422         DECLARE_LU_VARS(ldt, d);
 423         ENTRY;
 424
 425 #ifdef __KERNEL__
 426         ldt = obd->obd_type->typ_lu;
 427         if (ldt != NULL) {
 428                 struct lu_env env;
 429
 430                 rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
 431                 if (rc == 0) {
 432                         d = ldt->ldt_ops->ldto_device_alloc(&env, ldt, cfg);
 433                         lu_env_fini(&env);
 434                         if (!IS_ERR(d)) {
 435                                 obd->obd_lu_dev = d;
 436                                 d->ld_obd = obd;
 437                                 rc = 0;
 438                         } else
 439                                 rc = PTR_ERR(d);
 440                 }
 441         } else
 442 #endif
 443         {
 444                 OBD_CHECK_DT_OP(obd, setup, -EOPNOTSUPP);
 445                 OBD_COUNTER_INCREMENT(obd, setup);
 446                 rc = OBP(obd, setup)(obd, cfg);
 447         }
 448         RETURN(rc);
 449 }
 450
 451 static inline int obd_precleanup(struct obd_device *obd,
 452                                  enum obd_cleanup_stage cleanup_stage)
 453 {
 454         int rc;
 455         DECLARE_LU_VARS(ldt, d);
 456         ENTRY;
 457
 458         OBD_CHECK_DEV(obd);
 459 #ifdef __KERNEL__
 460         ldt = obd->obd_type->typ_lu;
 461         d = obd->obd_lu_dev;
 462         if (ldt != NULL) {
 463                 LASSERT(d != NULL);
 464                 if (cleanup_stage == OBD_CLEANUP_EXPORTS) {
 465                         struct lu_env env;
 466
 467                         rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
 468                         if (rc == 0) {
 469                                 ldt->ldt_ops->ldto_device_fini(&env, d);
 470                                 lu_env_fini(&env);
 471                         }
 472                 } else {
 473                         rc = 0;
 474                 }
 475         } else
 476 #endif
 477         {
 478                 OBD_CHECK_DT_OP(obd, precleanup, 0);
 479                 rc = OBP(obd, precleanup)(obd, cleanup_stage);
 480         }
 481
 482         OBD_COUNTER_INCREMENT(obd, precleanup);
 483         RETURN(rc);
 484 }
 485
 486 static inline int obd_cleanup(struct obd_device *obd)
 487 {
 488         int rc;
 489         DECLARE_LU_VARS(ldt, d);
 490         ENTRY;
 491
 492         OBD_CHECK_DEV(obd);
 493
 494 #ifdef __KERNEL__
 495         ldt = obd->obd_type->typ_lu;
 496         d = obd->obd_lu_dev;
 497         if (ldt != NULL) {
 498                 struct lu_env env;
 499                 LASSERT(d != NULL);
 500
 501                 rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
 502                 if (rc == 0) {
 503                         ldt->ldt_ops->ldto_device_free(&env, d);
 504                         lu_env_fini(&env);
 505                         obd->obd_lu_dev = NULL;
 506                 }
 507         } else
 508 #endif
 509         {
 510                 OBD_CHECK_DT_OP(obd, cleanup, 0);
 511                 rc = OBP(obd, cleanup)(obd);
 512         }
 513         OBD_COUNTER_INCREMENT(obd, cleanup);
 514         RETURN(rc);
 515 }
 516
 517 static inline int
 518 obd_process_config(struct obd_device *obd, int datalen, void *data)
 519 {
 520         int rc;
 521         DECLARE_LU_VARS(ldt, d);
 522         ENTRY;
 523
 524         OBD_CHECK_DEV(obd);
 525
 526 #ifdef __KERNEL__
 527         ldt = obd->obd_type->typ_lu;
 528         d = obd->obd_lu_dev;
 529         if (ldt != NULL && d != NULL) {
 530                 struct lu_env env;
 531
 532                 rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
 533                 if (rc == 0) {
 534                         rc = d->ld_ops->ldo_process_config(&env, d, data);
 535                         lu_env_fini(&env);
 536                 }
 537         } else
 538 #endif
 539         {
 540                 OBD_CHECK_DT_OP(obd, process_config, -EOPNOTSUPP);
 541                 rc = OBP(obd, process_config)(obd, datalen, data);
 542         }
 543         OBD_COUNTER_INCREMENT(obd, process_config);
 544
 545         RETURN(rc);
 546 }
 547
 548 /* Pack an in-memory MD struct for storage on disk.
 549  * Returns +ve size of packed MD (0 for free), or -ve error.
 550  *
 551  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 552  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 553  * If @*disk_tgt == NULL, it will be allocated
 554  */
 555 static inline int obd_packmd(struct obd_export *exp,
 556                              struct lov_mds_md **disk_tgt,
 557                              struct lov_stripe_md *mem_src)
 558 {
 559         int rc;
 560         ENTRY;
 561
 562         EXP_CHECK_DT_OP(exp, packmd);
 563         EXP_COUNTER_INCREMENT(exp, packmd);
 564
 565         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 566         RETURN(rc);
 567 }
 568
 569 static inline int obd_size_diskmd(struct obd_export *exp,
 570                                   struct lov_stripe_md *mem_src)
 571 {
 572         return obd_packmd(exp, NULL, mem_src);
 573 }
 574
 575 /* helper functions */
 576 static inline int obd_alloc_diskmd(struct obd_export *exp,
 577                                    struct lov_mds_md **disk_tgt)
 578 {
 579         LASSERT(disk_tgt);
 580         LASSERT(*disk_tgt == NULL);
 581         return obd_packmd(exp, disk_tgt, NULL);
 582 }
 583
 584 static inline int obd_free_diskmd(struct obd_export *exp,
 585                                   struct lov_mds_md **disk_tgt)
 586 {
 587         LASSERT(disk_tgt);
 588         LASSERT(*disk_tgt);
 589         return obd_packmd(exp, disk_tgt, NULL);
 590 }
 591
 592 /* Unpack an MD struct from disk to in-memory format.
 593  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 594  *
 595  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 596  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 597  * If @*mem_tgt == NULL, it will be allocated
 598  */
 599 static inline int obd_unpackmd(struct obd_export *exp,
 600                                struct lov_stripe_md **mem_tgt,
 601                                struct lov_mds_md *disk_src,
 602                                int disk_len)
 603 {
 604         int rc;
 605         ENTRY;
 606
 607         EXP_CHECK_DT_OP(exp, unpackmd);
 608         EXP_COUNTER_INCREMENT(exp, unpackmd);
 609
 610         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 611         RETURN(rc);
 612 }
 613
 614 /* helper functions */
 615 static inline int obd_alloc_memmd(struct obd_export *exp,
 616                                   struct lov_stripe_md **mem_tgt)
 617 {
 618         LASSERT(mem_tgt);
 619         LASSERT(*mem_tgt == NULL);
 620         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 621 }
 622
 623 static inline int obd_free_memmd(struct obd_export *exp,
 624                                  struct lov_stripe_md **mem_tgt)
 625 {
 626         LASSERT(mem_tgt);
 627         LASSERT(*mem_tgt);
 628         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 629 }
 630
 631 static inline int obd_checkmd(struct obd_export *exp,
 632                               struct obd_export *md_exp,
 633                               struct lov_stripe_md *mem_tgt)
 634 {
 635         int rc;
 636         ENTRY;
 637
 638         EXP_CHECK_DT_OP(exp, checkmd);
 639         EXP_COUNTER_INCREMENT(exp, checkmd);
 640
 641         rc = OBP(exp->exp_obd, checkmd)(exp, md_exp, mem_tgt);
 642         RETURN(rc);
 643 }
 644
 645 static inline int obd_precreate(struct obd_export *exp, int need_create)
 646 {
 647         int rc;
 648         ENTRY;
 649
 650         EXP_CHECK_DT_OP(exp, precreate);
 651         OBD_COUNTER_INCREMENT(exp->exp_obd, precreate);
 652
 653         rc = OBP(exp->exp_obd, precreate)(exp, need_create);
 654         RETURN(rc);
 655 }
 656
 657 static inline int obd_create(struct obd_export *exp, struct obdo *obdo,
 658                              struct lov_stripe_md **ea,
 659                              struct obd_trans_info *oti)
 660 {
 661         int rc;
 662         ENTRY;
 663
 664         EXP_CHECK_DT_OP(exp, create);
 665         EXP_COUNTER_INCREMENT(exp, create);
 666
 667         rc = OBP(exp->exp_obd, create)(exp, obdo, ea, oti);
 668         RETURN(rc);
 669 }
 670
 671 static inline int obd_destroy(struct obd_export *exp, struct obdo *obdo,
 672                               struct lov_stripe_md *ea,
 673                               struct obd_trans_info *oti,
 674                               struct obd_export *md_exp)
 675 {
 676         int rc;
 677         ENTRY;
 678
 679         EXP_CHECK_DT_OP(exp, destroy);
 680         EXP_COUNTER_INCREMENT(exp, destroy);
 681
 682         rc = OBP(exp->exp_obd, destroy)(exp, obdo, ea, oti, md_exp);
 683         RETURN(rc);
 684 }
 685
 686 static inline int obd_getattr(struct obd_export *exp, struct obd_info *oinfo)
 687 {
 688         int rc;
 689         ENTRY;
 690
 691         EXP_CHECK_DT_OP(exp, getattr);
 692         EXP_COUNTER_INCREMENT(exp, getattr);
 693
 694         rc = OBP(exp->exp_obd, getattr)(exp, oinfo);
 695         RETURN(rc);
 696 }
 697
 698 static inline int obd_getattr_async(struct obd_export *exp,
 699                                     struct obd_info *oinfo,
 700                                     struct ptlrpc_request_set *set)
 701 {
 702         int rc;
 703         ENTRY;
 704
 705         EXP_CHECK_DT_OP(exp, getattr_async);
 706         EXP_COUNTER_INCREMENT(exp, getattr_async);
 707
 708         rc = OBP(exp->exp_obd, getattr_async)(exp, oinfo, set);
 709         RETURN(rc);
 710 }
 711
 712 static inline int obd_setattr(struct obd_export *exp, struct obd_info *oinfo,
 713                               struct obd_trans_info *oti)
 714 {
 715         int rc;
 716         ENTRY;
 717
 718         EXP_CHECK_DT_OP(exp, setattr);
 719         EXP_COUNTER_INCREMENT(exp, setattr);
 720
 721         rc = OBP(exp->exp_obd, setattr)(exp, oinfo, oti);
 722         RETURN(rc);
 723 }
 724
 725 /* This performs all the requests set init/wait/destroy actions. */
 726 static inline int obd_setattr_rqset(struct obd_export *exp,
 727                                     struct obd_info *oinfo,
 728                                     struct obd_trans_info *oti)
 729 {
 730         struct ptlrpc_request_set *set = NULL;
 731         int rc;
 732         ENTRY;
 733
 734         EXP_CHECK_DT_OP(exp, setattr_async);
 735         EXP_COUNTER_INCREMENT(exp, setattr_async);
 736
 737         set =  ptlrpc_prep_set();
 738         if (set == NULL)
 739                 RETURN(-ENOMEM);
 740
 741         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 742         if (rc == 0)
 743                 rc = ptlrpc_set_wait(set);
 744         ptlrpc_set_destroy(set);
 745         RETURN(rc);
 746 }
 747
 748 /* This adds all the requests into @set if @set != NULL, otherwise
 749    all requests are sent asynchronously without waiting for response. */
 750 static inline int obd_setattr_async(struct obd_export *exp,
 751                                     struct obd_info *oinfo,
 752                                     struct obd_trans_info *oti,
 753                                     struct ptlrpc_request_set *set)
 754 {
 755         int rc;
 756         ENTRY;
 757
 758         EXP_CHECK_DT_OP(exp, setattr_async);
 759         EXP_COUNTER_INCREMENT(exp, setattr_async);
 760
 761         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 762         RETURN(rc);
 763 }
 764
 765 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 766                                int priority)
 767 {
 768         struct obd_device *obd = imp->imp_obd;
 769         int rc;
 770         ENTRY;
 771
 772         OBD_CHECK_DEV_ACTIVE(obd);
 773         OBD_CHECK_DT_OP(obd, add_conn, -EOPNOTSUPP);
 774         OBD_COUNTER_INCREMENT(obd, add_conn);
 775
 776         rc = OBP(obd, add_conn)(imp, uuid, priority);
 777         RETURN(rc);
 778 }
 779
 780 static inline int obd_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
 781 {
 782         struct obd_device *obd = imp->imp_obd;
 783         int rc;
 784         ENTRY;
 785
 786         OBD_CHECK_DEV_ACTIVE(obd);
 787         OBD_CHECK_DT_OP(obd, del_conn, -EOPNOTSUPP);
 788         OBD_COUNTER_INCREMENT(obd, del_conn);
 789
 790         rc = OBP(obd, del_conn)(imp, uuid);
 791         RETURN(rc);
 792 }
 793
 794 static inline int obd_connect(const struct lu_env *env,
 795                               struct lustre_handle *conn,struct obd_device *obd,
 796                               struct obd_uuid *cluuid,
 797                               struct obd_connect_data *d)
 798 {
 799         int rc;
 800 #ifdef LIBCFS_DEBUG
 801         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 802                                                    * check */
 803 #endif
 804         ENTRY;
 805
 806         OBD_CHECK_DEV_ACTIVE(obd);
 807         OBD_CHECK_DT_OP(obd, connect, -EOPNOTSUPP);
 808         OBD_COUNTER_INCREMENT(obd, connect);
 809
 810         rc = OBP(obd, connect)(env, conn, obd, cluuid, d);
 811         /* check that only subset is granted */
 812         LASSERT(ergo(d != NULL,
 813                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 814         RETURN(rc);
 815 }
 816
 817 static inline int obd_reconnect(struct obd_export *exp,
 818                                 struct obd_device *obd,
 819                                 struct obd_uuid *cluuid,
 820                                 struct obd_connect_data *d)
 821 {
 822         int rc;
 823 #ifdef LIBCFS_DEBUG
 824         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 825                                                    * check */
 826 #endif
 827
 828         ENTRY;
 829
 830         OBD_CHECK_DEV_ACTIVE(obd);
 831         OBD_CHECK_DT_OP(obd, reconnect, 0);
 832         OBD_COUNTER_INCREMENT(obd, reconnect);
 833
 834         rc = OBP(obd, reconnect)(exp, obd, cluuid, d);
 835         /* check that only subset is granted */
 836         LASSERT(ergo(d != NULL,
 837                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 838         RETURN(rc);
 839 }
 840
 841 static inline int obd_disconnect(struct obd_export *exp)
 842 {
 843         int rc;
 844         ENTRY;
 845
 846         EXP_CHECK_DT_OP(exp, disconnect);
 847         EXP_COUNTER_INCREMENT(exp, disconnect);
 848
 849         rc = OBP(exp->exp_obd, disconnect)(exp);
 850         RETURN(rc);
 851 }
 852
 853 static inline int obd_fid_init(struct obd_export *exp)
 854 {
 855         int rc;
 856         ENTRY;
 857
 858         OBD_CHECK_DT_OP(exp->exp_obd, fid_init, 0);
 859         EXP_COUNTER_INCREMENT(exp, fid_init);
 860
 861         rc = OBP(exp->exp_obd, fid_init)(exp);
 862         RETURN(rc);
 863 }
 864
 865 static inline int obd_fid_fini(struct obd_export *exp)
 866 {
 867         int rc;
 868         ENTRY;
 869
 870         OBD_CHECK_DT_OP(exp->exp_obd, fid_fini, 0);
 871         EXP_COUNTER_INCREMENT(exp, fid_fini);
 872
 873         rc = OBP(exp->exp_obd, fid_fini)(exp);
 874         RETURN(rc);
 875 }
 876
 877 static inline int obd_fid_alloc(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)(exp, fid, op_data);
 888         RETURN(rc);
 889 }
 890
 891 static inline int obd_fid_delete(struct obd_export *exp,
 892                                  const struct lu_fid *fid)
 893 {
 894         int rc;
 895         ENTRY;
 896
 897         EXP_CHECK_DT_OP(exp, fid_delete);
 898         EXP_COUNTER_INCREMENT(exp, fid_delete);
 899
 900         rc = OBP(exp->exp_obd, fid_delete)(exp, fid);
 901         RETURN(rc);
 902 }
 903
 904 static inline int obd_ping(struct obd_export *exp)
 905 {
 906         int rc;
 907         ENTRY;
 908
 909         OBD_CHECK_DT_OP(exp->exp_obd, ping, 0);
 910         EXP_COUNTER_INCREMENT(exp, ping);
 911
 912         rc = OBP(exp->exp_obd, ping)(exp);
 913         RETURN(rc);
 914 }
 915
 916 static inline int obd_init_export(struct obd_export *exp)
 917 {
 918         int rc = 0;
 919
 920         ENTRY;
 921         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 922             OBP((exp)->exp_obd, init_export))
 923                 rc = OBP(exp->exp_obd, init_export)(exp);
 924         RETURN(rc);
 925 }
 926
 927 static inline int obd_destroy_export(struct obd_export *exp)
 928 {
 929         ENTRY;
 930         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 931             OBP((exp)->exp_obd, destroy_export))
 932                 OBP(exp->exp_obd, destroy_export)(exp);
 933         RETURN(0);
 934 }
 935
 936 static inline int obd_extent_calc(struct obd_export *exp,
 937                                   struct lov_stripe_md *md,
 938                                   int cmd, obd_off *offset)
 939 {
 940         int rc;
 941         ENTRY;
 942         EXP_CHECK_DT_OP(exp, extent_calc);
 943         rc = OBP(exp->exp_obd, extent_calc)(exp, md, cmd, offset);
 944         RETURN(rc);
 945 }
 946
 947 static inline struct dentry *
 948 obd_lvfs_fid2dentry(struct obd_export *exp, __u64 id_ino, __u32 gen, __u64 gr)
 949 {
 950         LASSERT(exp->exp_obd);
 951
 952         return lvfs_fid2dentry(&exp->exp_obd->obd_lvfs_ctxt, id_ino, gen, gr,
 953                                exp->exp_obd);
 954 }
 955
 956 static inline int
 957 obd_lvfs_open_llog(struct obd_export *exp, __u64 id_ino, struct dentry *dentry)
 958 {
 959         LASSERT(exp->exp_obd);
 960         CERROR("FIXME what's the story here?  This needs to be an obd fn?\n");
 961 #if 0
 962         return lvfs_open_llog(&exp->exp_obd->obd_lvfs_ctxt, id_ino,
 963                               dentry, exp->exp_obd);
 964 #endif
 965         return 0;
 966 }
 967
 968 #ifndef time_before
 969 #define time_before(t1, t2) ((long)t2 - (long)t1 > 0)
 970 #endif
 971
 972 /* @max_age is the oldest time in jiffies that we accept using a cached data.
 973  * If the cache is older than @max_age we will get a new value from the
 974  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
 975 static inline int obd_statfs_async(struct obd_device *obd,
 976                                    struct obd_info *oinfo,
 977                                    __u64 max_age,
 978                                    struct ptlrpc_request_set *rqset)
 979 {
 980         int rc = 0;
 981         ENTRY;
 982
 983         if (obd == NULL)
 984                 RETURN(-EINVAL);
 985
 986         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
 987         OBD_COUNTER_INCREMENT(obd, statfs);
 988
 989         CDEBUG(D_SUPER, "%s: osfs %p age "LPU64", max_age "LPU64"\n",
 990                obd->obd_name, &obd->obd_osfs, obd->obd_osfs_age, max_age);
 991         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
 992                 rc = OBP(obd, statfs_async)(obd, oinfo, max_age, rqset);
 993         } else {
 994                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
 995                        " objects "LPU64"/"LPU64"\n",
 996                        obd->obd_name, &obd->obd_osfs,
 997                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
 998                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
 999                 spin_lock(&obd->obd_osfs_lock);
1000                 memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
1001                 spin_unlock(&obd->obd_osfs_lock);
1002                 if (oinfo->oi_cb_up)
1003                         oinfo->oi_cb_up(oinfo, 0);
1004         }
1005         RETURN(rc);
1006 }
1007
1008 static inline int obd_statfs_rqset(struct obd_device *obd,
1009                                    struct obd_statfs *osfs, __u64 max_age,
1010                                    int quick_pry)
1011 {
1012         struct ptlrpc_request_set *set = NULL;
1013         struct obd_info oinfo = { { { 0 } } };
1014         int rc = 0;
1015         ENTRY;
1016
1017         set =  ptlrpc_prep_set();
1018         if (set == NULL)
1019                 RETURN(-ENOMEM);
1020
1021         oinfo.oi_osfs = osfs;
1022         rc = obd_statfs_async(obd, &oinfo, max_age, set);
1023         if (rc == 0) {
1024                 struct ptlrpc_request *req;
1025
1026                 if (quick_pry)
1027                         list_for_each_entry(req, &set->set_requests,
1028                                             rq_set_chain) {
1029                                 spin_lock(&req->rq_lock);
1030                                 req->rq_no_resend = 1;
1031                                 req->rq_no_delay  = 1;
1032                                 spin_unlock(&req->rq_lock);
1033                         }
1034                 rc = ptlrpc_set_wait(set);
1035         }
1036         ptlrpc_set_destroy(set);
1037         RETURN(rc);
1038 }
1039
1040 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1041  * If the cache is older than @max_age we will get a new value from the
1042  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1043 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
1044                              __u64 max_age)
1045 {
1046         int rc = 0;
1047         ENTRY;
1048
1049         if (obd == NULL)
1050                 RETURN(-EINVAL);
1051
1052         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1053         OBD_COUNTER_INCREMENT(obd, statfs);
1054
1055         CDEBUG(D_SUPER, "osfs "LPU64", max_age "LPU64"\n",
1056                obd->obd_osfs_age, max_age);
1057         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1058                 rc = OBP(obd, statfs)(obd, osfs, max_age);
1059                 if (rc == 0) {
1060                         spin_lock(&obd->obd_osfs_lock);
1061                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
1062                         obd->obd_osfs_age = cfs_time_current_64();
1063                         spin_unlock(&obd->obd_osfs_lock);
1064                 }
1065         } else {
1066                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1067                        " objects "LPU64"/"LPU64"\n",
1068                        obd->obd_name, &obd->obd_osfs,
1069                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1070                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1071                 spin_lock(&obd->obd_osfs_lock);
1072                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
1073                 spin_unlock(&obd->obd_osfs_lock);
1074         }
1075         RETURN(rc);
1076 }
1077
1078 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
1079                            struct lov_stripe_md *ea, obd_size start,
1080                            obd_size end, void *capa)
1081 {
1082         int rc;
1083         ENTRY;
1084
1085         OBD_CHECK_DT_OP(exp->exp_obd, sync, -EOPNOTSUPP);
1086         EXP_COUNTER_INCREMENT(exp, sync);
1087
1088         rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end, capa);
1089         RETURN(rc);
1090 }
1091
1092 static inline int obd_punch_rqset(struct obd_export *exp,
1093                                   struct obd_info *oinfo,
1094                                   struct obd_trans_info *oti)
1095 {
1096         struct ptlrpc_request_set *set = NULL;
1097         int rc;
1098         ENTRY;
1099
1100         EXP_CHECK_DT_OP(exp, punch);
1101         EXP_COUNTER_INCREMENT(exp, punch);
1102
1103         set =  ptlrpc_prep_set();
1104         if (set == NULL)
1105                 RETURN(-ENOMEM);
1106
1107         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, set);
1108         if (rc == 0)
1109                 rc = ptlrpc_set_wait(set);
1110         ptlrpc_set_destroy(set);
1111         RETURN(rc);
1112 }
1113
1114 static inline int obd_punch(struct obd_export *exp, struct obd_info *oinfo,
1115                             struct obd_trans_info *oti,
1116                             struct ptlrpc_request_set *rqset)
1117 {
1118         int rc;
1119         ENTRY;
1120
1121         EXP_CHECK_DT_OP(exp, punch);
1122         EXP_COUNTER_INCREMENT(exp, punch);
1123
1124         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, rqset);
1125         RETURN(rc);
1126 }
1127
1128 static inline int obd_brw(int cmd, struct obd_export *exp,
1129                           struct obd_info *oinfo, obd_count oa_bufs,
1130                           struct brw_page *pg, struct obd_trans_info *oti)
1131 {
1132         int rc;
1133         ENTRY;
1134
1135         EXP_CHECK_DT_OP(exp, brw);
1136         EXP_COUNTER_INCREMENT(exp, brw);
1137
1138         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
1139                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
1140                        "or OBD_BRW_CHECK\n");
1141                 LBUG();
1142         }
1143
1144         rc = OBP(exp->exp_obd, brw)(cmd, exp, oinfo, oa_bufs, pg, oti);
1145         RETURN(rc);
1146 }
1147
1148 static inline int obd_brw_async(int cmd, struct obd_export *exp,
1149                                 struct obd_info *oinfo, obd_count oa_bufs,
1150                                 struct brw_page *pg, struct obd_trans_info *oti,
1151                                 struct ptlrpc_request_set *set)
1152 {
1153         int rc;
1154         ENTRY;
1155
1156         EXP_CHECK_DT_OP(exp, brw_async);
1157         EXP_COUNTER_INCREMENT(exp, brw_async);
1158
1159         if (!(cmd & OBD_BRW_RWMASK)) {
1160                 CERROR("obd_brw: cmd must be OBD_BRW_READ or OBD_BRW_WRITE\n");
1161                 LBUG();
1162         }
1163
1164         rc = OBP(exp->exp_obd, brw_async)(cmd, exp, oinfo, oa_bufs, pg,oti,set);
1165         RETURN(rc);
1166 }
1167
1168 static inline int obd_brw_rqset(int cmd, struct obd_export *exp,
1169                                 struct obdo *oa, struct lov_stripe_md *lsm,
1170                                 obd_count oa_bufs, struct brw_page *pg,
1171                                 struct obd_trans_info *oti,
1172                                 struct obd_capa *ocapa)
1173 {
1174         struct ptlrpc_request_set *set = NULL;
1175         struct obd_info oinfo = { { { 0 } } };
1176         atomic_t nob;
1177         int rc = 0;
1178         ENTRY;
1179
1180         set =  ptlrpc_prep_set();
1181         if (set == NULL)
1182                 RETURN(-ENOMEM);
1183         atomic_set(&nob, 0);
1184         set->set_countp = &nob;
1185
1186         oinfo.oi_oa = oa;
1187         oinfo.oi_md = lsm;
1188         oinfo.oi_capa = ocapa;
1189         rc = obd_brw_async(cmd, exp, &oinfo, oa_bufs, pg, oti, set);
1190         if (rc == 0) {
1191                 rc = ptlrpc_set_wait(set);
1192                 if (rc)
1193                         CERROR("error from callback: rc = %d\n", rc);
1194                 else
1195                         rc = atomic_read(&nob);
1196         } else {
1197                 CDEBUG(rc == -ENOSPC ? D_INODE : D_ERROR,
1198                        "error from obd_brw_async: rc = %d\n", rc);
1199         }
1200         ptlrpc_set_destroy(set);
1201         RETURN(rc);
1202 }
1203
1204 static inline  int obd_prep_async_page(struct obd_export *exp,
1205                                        struct lov_stripe_md *lsm,
1206                                        struct lov_oinfo *loi,
1207                                        cfs_page_t *page, obd_off offset,
1208                                        struct obd_async_page_ops *ops,
1209                                        void *data, void **res)
1210 {
1211         int ret;
1212         ENTRY;
1213
1214         EXP_CHECK_DT_OP(exp, prep_async_page);
1215         EXP_COUNTER_INCREMENT(exp, prep_async_page);
1216
1217         ret = OBP(exp->exp_obd, prep_async_page)(exp, lsm, loi, page, offset,
1218                                                  ops, data, res);
1219         RETURN(ret);
1220 }
1221
1222 static inline int obd_queue_async_io(struct obd_export *exp,
1223                                      struct lov_stripe_md *lsm,
1224                                      struct lov_oinfo *loi, void *cookie,
1225                                      int cmd, obd_off off, int count,
1226                                      obd_flag brw_flags, obd_flag async_flags)
1227 {
1228         int rc;
1229         ENTRY;
1230
1231         EXP_CHECK_DT_OP(exp, queue_async_io);
1232         EXP_COUNTER_INCREMENT(exp, queue_async_io);
1233         LASSERT(cmd & OBD_BRW_RWMASK);
1234
1235         rc = OBP(exp->exp_obd, queue_async_io)(exp, lsm, loi, cookie, cmd, off,
1236                                                count, brw_flags, async_flags);
1237         RETURN(rc);
1238 }
1239
1240 static inline int obd_set_async_flags(struct obd_export *exp,
1241                                       struct lov_stripe_md *lsm,
1242                                       struct lov_oinfo *loi, void *cookie,
1243                                       obd_flag async_flags)
1244 {
1245         int rc;
1246         ENTRY;
1247
1248         EXP_CHECK_DT_OP(exp, set_async_flags);
1249         EXP_COUNTER_INCREMENT(exp, set_async_flags);
1250
1251         rc = OBP(exp->exp_obd, set_async_flags)(exp, lsm, loi, cookie,
1252                                                 async_flags);
1253         RETURN(rc);
1254 }
1255
1256 static inline int obd_queue_group_io(struct obd_export *exp,
1257                                      struct lov_stripe_md *lsm,
1258                                      struct lov_oinfo *loi,
1259                                      struct obd_io_group *oig,
1260                                      void *cookie, int cmd, obd_off off,
1261                                      int count, obd_flag brw_flags,
1262                                      obd_flag async_flags)
1263 {
1264         int rc;
1265         ENTRY;
1266
1267         EXP_CHECK_DT_OP(exp, queue_group_io);
1268         EXP_COUNTER_INCREMENT(exp, queue_group_io);
1269         LASSERT(cmd & OBD_BRW_RWMASK);
1270
1271         rc = OBP(exp->exp_obd, queue_group_io)(exp, lsm, loi, oig, cookie,
1272                                                cmd, off, count, brw_flags,
1273                                                async_flags);
1274         RETURN(rc);
1275 }
1276
1277 static inline int obd_trigger_group_io(struct obd_export *exp,
1278                                        struct lov_stripe_md *lsm,
1279                                        struct lov_oinfo *loi,
1280                                        struct obd_io_group *oig)
1281 {
1282         int rc;
1283         ENTRY;
1284
1285         EXP_CHECK_DT_OP(exp, trigger_group_io);
1286         EXP_COUNTER_INCREMENT(exp, trigger_group_io);
1287
1288         rc = OBP(exp->exp_obd, trigger_group_io)(exp, lsm, loi, oig);
1289         RETURN(rc);
1290 }
1291
1292 static inline int obd_teardown_async_page(struct obd_export *exp,
1293                                           struct lov_stripe_md *lsm,
1294                                           struct lov_oinfo *loi, void *cookie)
1295 {
1296         int rc;
1297         ENTRY;
1298
1299         EXP_CHECK_DT_OP(exp, teardown_async_page);
1300         EXP_COUNTER_INCREMENT(exp, teardown_async_page);
1301
1302         rc = OBP(exp->exp_obd, teardown_async_page)(exp, lsm, loi, cookie);
1303         RETURN(rc);
1304 }
1305
1306 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
1307                              int objcount, struct obd_ioobj *obj,
1308                              int niocount, struct niobuf_remote *remote,
1309                              struct niobuf_local *local,
1310                              struct obd_trans_info *oti,
1311                              struct lustre_capa *capa)
1312 {
1313         int rc;
1314         ENTRY;
1315
1316         EXP_CHECK_DT_OP(exp, preprw);
1317         EXP_COUNTER_INCREMENT(exp, preprw);
1318
1319         rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, niocount,
1320                                        remote, local, oti, capa);
1321         RETURN(rc);
1322 }
1323
1324 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
1325                                int objcount, struct obd_ioobj *obj,
1326                                int niocount, struct niobuf_local *local,
1327                                struct obd_trans_info *oti, int rc)
1328 {
1329         ENTRY;
1330
1331         EXP_CHECK_DT_OP(exp, commitrw);
1332         EXP_COUNTER_INCREMENT(exp, commitrw);
1333
1334         rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj, niocount,
1335                                          local, oti, rc);
1336         RETURN(rc);
1337 }
1338
1339 static inline int obd_merge_lvb(struct obd_export *exp,
1340                                 struct lov_stripe_md *lsm,
1341                                 struct ost_lvb *lvb, int kms_only)
1342 {
1343         int rc;
1344         ENTRY;
1345
1346         EXP_CHECK_DT_OP(exp, merge_lvb);
1347         EXP_COUNTER_INCREMENT(exp, merge_lvb);
1348
1349         rc = OBP(exp->exp_obd, merge_lvb)(exp, lsm, lvb, kms_only);
1350         RETURN(rc);
1351 }
1352
1353 static inline int obd_adjust_kms(struct obd_export *exp,
1354                                  struct lov_stripe_md *lsm, obd_off size,
1355                                  int shrink)
1356 {
1357         int rc;
1358         ENTRY;
1359
1360         EXP_CHECK_DT_OP(exp, adjust_kms);
1361         EXP_COUNTER_INCREMENT(exp, adjust_kms);
1362
1363         rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
1364         RETURN(rc);
1365 }
1366
1367 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1368                                 int len, void *karg, void *uarg)
1369 {
1370         int rc;
1371         ENTRY;
1372
1373         EXP_CHECK_DT_OP(exp, iocontrol);
1374         EXP_COUNTER_INCREMENT(exp, iocontrol);
1375
1376         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1377         RETURN(rc);
1378 }
1379
1380 static inline int obd_enqueue_rqset(struct obd_export *exp,
1381                                     struct obd_info *oinfo,
1382                                     struct ldlm_enqueue_info *einfo)
1383 {
1384         struct ptlrpc_request_set *set = NULL;
1385         int rc;
1386         ENTRY;
1387
1388         EXP_CHECK_DT_OP(exp, enqueue);
1389         EXP_COUNTER_INCREMENT(exp, enqueue);
1390
1391         set =  ptlrpc_prep_set();
1392         if (set == NULL)
1393                 RETURN(-ENOMEM);
1394
1395         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1396         if (rc == 0)
1397                 rc = ptlrpc_set_wait(set);
1398         ptlrpc_set_destroy(set);
1399         RETURN(rc);
1400 }
1401
1402 static inline int obd_enqueue(struct obd_export *exp,
1403                               struct obd_info *oinfo,
1404                               struct ldlm_enqueue_info *einfo,
1405                               struct ptlrpc_request_set *set)
1406 {
1407         int rc;
1408         ENTRY;
1409
1410         EXP_CHECK_DT_OP(exp, enqueue);
1411         EXP_COUNTER_INCREMENT(exp, enqueue);
1412
1413         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1414         RETURN(rc);
1415 }
1416
1417 static inline int obd_match(struct obd_export *exp, struct lov_stripe_md *ea,
1418                             __u32 type, ldlm_policy_data_t *policy, __u32 mode,
1419                             int *flags, void *data, struct lustre_handle *lockh)
1420 {
1421         int rc;
1422         ENTRY;
1423
1424         EXP_CHECK_DT_OP(exp, match);
1425         EXP_COUNTER_INCREMENT(exp, match);
1426
1427         rc = OBP(exp->exp_obd, match)(exp, ea, type, policy, mode, flags, data,
1428                                       lockh);
1429         RETURN(rc);
1430 }
1431
1432 static inline int obd_change_cbdata(struct obd_export *exp,
1433                                     struct lov_stripe_md *lsm,
1434                                     ldlm_iterator_t it, void *data)
1435 {
1436         int rc;
1437         ENTRY;
1438
1439         EXP_CHECK_DT_OP(exp, change_cbdata);
1440         EXP_COUNTER_INCREMENT(exp, change_cbdata);
1441
1442         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1443         RETURN(rc);
1444 }
1445
1446 static inline int obd_cancel(struct obd_export *exp,
1447                              struct lov_stripe_md *ea, __u32 mode,
1448                              struct lustre_handle *lockh)
1449 {
1450         int rc;
1451         ENTRY;
1452
1453         EXP_CHECK_DT_OP(exp, cancel);
1454         EXP_COUNTER_INCREMENT(exp, cancel);
1455
1456         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1457         RETURN(rc);
1458 }
1459
1460 static inline int obd_cancel_unused(struct obd_export *exp,
1461                                     struct lov_stripe_md *ea,
1462                                     int flags, void *opaque)
1463 {
1464         int rc;
1465         ENTRY;
1466
1467         EXP_CHECK_DT_OP(exp, cancel_unused);
1468         EXP_COUNTER_INCREMENT(exp, cancel_unused);
1469
1470         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1471         RETURN(rc);
1472 }
1473
1474 static inline int obd_join_lru(struct obd_export *exp,
1475                                struct lov_stripe_md *ea, int join)
1476 {
1477         int rc;
1478         ENTRY;
1479
1480         EXP_CHECK_DT_OP(exp, join_lru);
1481         EXP_COUNTER_INCREMENT(exp, join_lru);
1482
1483         rc = OBP(exp->exp_obd, join_lru)(exp, ea, join);
1484         RETURN(rc);
1485 }
1486
1487 static inline int obd_pin(struct obd_export *exp, const struct lu_fid *fid,
1488                           struct obd_capa *oc, struct obd_client_handle *handle,
1489                           int flag)
1490 {
1491         int rc;
1492         ENTRY;
1493
1494         EXP_CHECK_DT_OP(exp, pin);
1495         EXP_COUNTER_INCREMENT(exp, pin);
1496
1497         rc = OBP(exp->exp_obd, pin)(exp, fid, oc, handle, flag);
1498         RETURN(rc);
1499 }
1500
1501 static inline int obd_unpin(struct obd_export *exp,
1502                             struct obd_client_handle *handle, int flag)
1503 {
1504         int rc;
1505         ENTRY;
1506
1507         EXP_CHECK_DT_OP(exp, unpin);
1508         EXP_COUNTER_INCREMENT(exp, unpin);
1509
1510         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1511         RETURN(rc);
1512 }
1513
1514
1515 static inline void obd_import_event(struct obd_device *obd,
1516                                     struct obd_import *imp,
1517                                     enum obd_import_event event)
1518 {
1519         ENTRY;
1520         if (!obd) {
1521                 CERROR("NULL device\n");
1522                 EXIT;
1523                 return;
1524         }
1525         if (obd->obd_set_up && OBP(obd, import_event)) {
1526                 OBD_COUNTER_INCREMENT(obd, import_event);
1527                 OBP(obd, import_event)(obd, imp, event);
1528         }
1529         EXIT;
1530 }
1531
1532 static inline int obd_llog_connect(struct obd_export *exp,
1533                                    struct llogd_conn_body *body)
1534 {
1535         int rc;
1536         ENTRY;
1537
1538         OBD_CHECK_DT_OP(exp->exp_obd, llog_connect, 0);
1539         EXP_COUNTER_INCREMENT(exp, llog_connect);
1540
1541         rc = OBP(exp->exp_obd, llog_connect)(exp, body);
1542         RETURN(rc);
1543 }
1544
1545
1546 static inline int obd_notify(struct obd_device *obd,
1547                              struct obd_device *watched,
1548                              enum obd_notify_event ev,
1549                              void *data)
1550 {
1551         int rc;
1552         ENTRY;
1553         OBD_CHECK_DEV(obd);
1554
1555         /* the check for async_recov is a complete hack - I'm hereby
1556            overloading the meaning to also mean "this was called from
1557            mds_postsetup".  I know that my mds is able to handle notifies
1558            by this point, and it needs to get them to execute mds_postrecov. */
1559         if (!obd->obd_set_up && !obd->obd_async_recov) {
1560                 CDEBUG(D_HA, "obd %s not set up\n", obd->obd_name);
1561                 RETURN(-EINVAL);
1562         }
1563
1564         if (!OBP(obd, notify)) {
1565                 CERROR("obd %s has no notify handler\n", obd->obd_name);
1566                 RETURN(-ENOSYS);
1567         }
1568
1569         OBD_COUNTER_INCREMENT(obd, notify);
1570         rc = OBP(obd, notify)(obd, watched, ev, data);
1571         RETURN(rc);
1572 }
1573
1574 static inline int obd_notify_observer(struct obd_device *observer,
1575                                       struct obd_device *observed,
1576                                       enum obd_notify_event ev,
1577                                       void *data)
1578 {
1579         int rc1;
1580         int rc2;
1581
1582         struct obd_notify_upcall *onu;
1583
1584         if (observer->obd_observer)
1585                 rc1 = obd_notify(observer->obd_observer, observed, ev, data);
1586         else
1587                 rc1 = 0;
1588         /*
1589          * Also, call non-obd listener, if any
1590          */
1591         onu = &observer->obd_upcall;
1592         if (onu->onu_upcall != NULL)
1593                 rc2 = onu->onu_upcall(observer, observed, ev, onu->onu_owner);
1594         else
1595                 rc2 = 0;
1596
1597         return rc1 ? rc1 : rc2;
1598 }
1599
1600 static inline int obd_quotacheck(struct obd_export *exp,
1601                                  struct obd_quotactl *oqctl)
1602 {
1603         int rc;
1604         ENTRY;
1605
1606         EXP_CHECK_DT_OP(exp, quotacheck);
1607         EXP_COUNTER_INCREMENT(exp, quotacheck);
1608
1609         rc = OBP(exp->exp_obd, quotacheck)(exp, oqctl);
1610         RETURN(rc);
1611 }
1612
1613 static inline int obd_quotactl(struct obd_export *exp,
1614                                struct obd_quotactl *oqctl)
1615 {
1616         int rc;
1617         ENTRY;
1618
1619         EXP_CHECK_DT_OP(exp, quotactl);
1620         EXP_COUNTER_INCREMENT(exp, quotactl);
1621
1622         rc = OBP(exp->exp_obd, quotactl)(exp, oqctl);
1623         RETURN(rc);
1624 }
1625
1626 static inline int obd_health_check(struct obd_device *obd)
1627 {
1628         /* returns: 0 on healthy
1629          *         >0 on unhealthy + reason code/flag
1630          *            however the only suppored reason == 1 right now
1631          *            We'll need to define some better reasons
1632          *            or flags in the future.
1633          *         <0 on error
1634          */
1635         int rc;
1636         ENTRY;
1637
1638         /* don't use EXP_CHECK_DT_OP, because NULL method is normal here */
1639         if (obd == NULL || !OBT(obd)) {
1640                 CERROR("cleaned up obd\n");
1641                 RETURN(-EOPNOTSUPP);
1642         }
1643         if (!obd->obd_set_up || obd->obd_stopping)
1644                 RETURN(0);
1645         if (!OBP(obd, health_check))
1646                 RETURN(0);
1647
1648         rc = OBP(obd, health_check)(obd);
1649         RETURN(rc);
1650 }
1651
1652 static inline int obd_register_observer(struct obd_device *obd,
1653                                         struct obd_device *observer)
1654 {
1655         ENTRY;
1656         OBD_CHECK_DEV(obd);
1657         if (obd->obd_observer && observer)
1658                 RETURN(-EALREADY);
1659         obd->obd_observer = observer;
1660         RETURN(0);
1661 }
1662
1663 /* metadata helpers */
1664 static inline int md_getstatus(struct obd_export *exp,
1665                                struct lu_fid *fid, struct obd_capa **pc)
1666 {
1667         int rc;
1668         ENTRY;
1669
1670         EXP_CHECK_MD_OP(exp, getstatus);
1671         EXP_MD_COUNTER_INCREMENT(exp, getstatus);
1672         rc = MDP(exp->exp_obd, getstatus)(exp, fid, pc);
1673         RETURN(rc);
1674 }
1675
1676 static inline int md_getattr(struct obd_export *exp, const struct lu_fid *fid,
1677                              struct obd_capa *oc, obd_valid valid, int ea_size,
1678                              struct ptlrpc_request **request)
1679 {
1680         int rc;
1681         ENTRY;
1682         EXP_CHECK_MD_OP(exp, getattr);
1683         EXP_MD_COUNTER_INCREMENT(exp, getattr);
1684         rc = MDP(exp->exp_obd, getattr)(exp, fid, oc, valid,
1685                                         ea_size, request);
1686         RETURN(rc);
1687 }
1688
1689 static inline int md_change_cbdata(struct obd_export *exp,
1690                                    const struct lu_fid *fid,
1691                                    ldlm_iterator_t it, void *data)
1692 {
1693         int rc;
1694         ENTRY;
1695         EXP_CHECK_MD_OP(exp, change_cbdata);
1696         EXP_MD_COUNTER_INCREMENT(exp, change_cbdata);
1697         rc = MDP(exp->exp_obd, change_cbdata)(exp, fid, it, data);
1698         RETURN(rc);
1699 }
1700
1701 static inline int md_close(struct obd_export *exp, struct md_op_data *op_data,
1702                            struct md_open_data *mod,
1703                            struct ptlrpc_request **request)
1704 {
1705         int rc;
1706         ENTRY;
1707         EXP_CHECK_MD_OP(exp, close);
1708         EXP_MD_COUNTER_INCREMENT(exp, close);
1709         rc = MDP(exp->exp_obd, close)(exp, op_data, mod, request);
1710         RETURN(rc);
1711 }
1712
1713 static inline int md_create(struct obd_export *exp, struct md_op_data *op_data,
1714                             const void *data, int datalen, int mode, __u32 uid,
1715                             __u32 gid, __u32 cap_effective, __u64 rdev,
1716                             struct ptlrpc_request **request)
1717 {
1718         int rc;
1719         ENTRY;
1720         EXP_CHECK_MD_OP(exp, create);
1721         EXP_MD_COUNTER_INCREMENT(exp, create);
1722         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1723                                        uid, gid, cap_effective, rdev, request);
1724         RETURN(rc);
1725 }
1726
1727 static inline int md_done_writing(struct obd_export *exp,
1728                                   struct md_op_data *op_data,
1729                                   struct md_open_data *mod)
1730 {
1731         int rc;
1732         ENTRY;
1733         EXP_CHECK_MD_OP(exp, done_writing);
1734         EXP_MD_COUNTER_INCREMENT(exp, done_writing);
1735         rc = MDP(exp->exp_obd, done_writing)(exp, op_data, mod);
1736         RETURN(rc);
1737 }
1738
1739 static inline int md_enqueue(struct obd_export *exp,
1740                              struct ldlm_enqueue_info *einfo,
1741                              struct lookup_intent *it,
1742                              struct md_op_data *op_data,
1743                              struct lustre_handle *lockh,
1744                              void *lmm, int lmmsize,
1745                              int extra_lock_flags)
1746 {
1747         int rc;
1748         ENTRY;
1749         EXP_CHECK_MD_OP(exp, enqueue);
1750         EXP_MD_COUNTER_INCREMENT(exp, enqueue);
1751         rc = MDP(exp->exp_obd, enqueue)(exp, einfo, it, op_data, lockh,
1752                                         lmm, lmmsize, extra_lock_flags);
1753         RETURN(rc);
1754 }
1755
1756 static inline int md_getattr_name(struct obd_export *exp,
1757                                   const struct lu_fid *fid, struct obd_capa *oc,
1758                                   const char *name, int namelen,
1759                                   obd_valid valid, int ea_size,
1760                                   struct ptlrpc_request **request)
1761 {
1762         int rc;
1763         ENTRY;
1764         EXP_CHECK_MD_OP(exp, getattr_name);
1765         EXP_MD_COUNTER_INCREMENT(exp, getattr_name);
1766         rc = MDP(exp->exp_obd, getattr_name)(exp, fid, oc, name, namelen,
1767                                              valid, ea_size, request);
1768         RETURN(rc);
1769 }
1770
1771 static inline int md_intent_lock(struct obd_export *exp,
1772                                  struct md_op_data *op_data, void *lmm,
1773                                  int lmmsize, struct lookup_intent *it,
1774                                  int flags, struct ptlrpc_request **reqp,
1775                                  ldlm_blocking_callback cb_blocking,
1776                                  int extra_lock_flags)
1777 {
1778         int rc;
1779         ENTRY;
1780         EXP_CHECK_MD_OP(exp, intent_lock);
1781         EXP_MD_COUNTER_INCREMENT(exp, intent_lock);
1782         rc = MDP(exp->exp_obd, intent_lock)(exp, op_data, lmm, lmmsize,
1783                                             it, flags, reqp, cb_blocking,
1784                                             extra_lock_flags);
1785         RETURN(rc);
1786 }
1787
1788 static inline int md_link(struct obd_export *exp, struct md_op_data *op_data,
1789                           struct ptlrpc_request **request)
1790 {
1791         int rc;
1792         ENTRY;
1793         EXP_CHECK_MD_OP(exp, link);
1794         EXP_MD_COUNTER_INCREMENT(exp, link);
1795         rc = MDP(exp->exp_obd, link)(exp, op_data, request);
1796         RETURN(rc);
1797 }
1798
1799 static inline int md_rename(struct obd_export *exp, struct md_op_data *op_data,
1800                             const char *old, int oldlen, const char *new,
1801                             int newlen, struct ptlrpc_request **request)
1802 {
1803         int rc;
1804         ENTRY;
1805         EXP_CHECK_MD_OP(exp, rename);
1806         EXP_MD_COUNTER_INCREMENT(exp, rename);
1807         rc = MDP(exp->exp_obd, rename)(exp, op_data, old, oldlen, new,
1808                                        newlen, request);
1809         RETURN(rc);
1810 }
1811
1812 static inline int md_is_subdir(struct obd_export *exp,
1813                                const struct lu_fid *pfid,
1814                                const struct lu_fid *cfid,
1815                                struct ptlrpc_request **request)
1816 {
1817         int rc;
1818         ENTRY;
1819         EXP_CHECK_MD_OP(exp, is_subdir);
1820         EXP_MD_COUNTER_INCREMENT(exp, is_subdir);
1821         rc = MDP(exp->exp_obd, is_subdir)(exp, pfid, cfid, request);
1822         RETURN(rc);
1823 }
1824
1825 static inline int md_setattr(struct obd_export *exp, struct md_op_data *op_data,
1826                              void *ea, int ealen, void *ea2, int ea2len,
1827                              struct ptlrpc_request **request,
1828                              struct md_open_data **mod)
1829 {
1830         int rc;
1831         ENTRY;
1832         EXP_CHECK_MD_OP(exp, setattr);
1833         EXP_MD_COUNTER_INCREMENT(exp, setattr);
1834         rc = MDP(exp->exp_obd, setattr)(exp, op_data, ea, ealen,
1835                                         ea2, ea2len, request, mod);
1836         RETURN(rc);
1837 }
1838
1839 static inline int md_sync(struct obd_export *exp, const struct lu_fid *fid,
1840                           struct obd_capa *oc, struct ptlrpc_request **request)
1841 {
1842         int rc;
1843         ENTRY;
1844         EXP_CHECK_MD_OP(exp, sync);
1845         EXP_MD_COUNTER_INCREMENT(exp, sync);
1846         rc = MDP(exp->exp_obd, sync)(exp, fid, oc, request);
1847         RETURN(rc);
1848 }
1849
1850 static inline int md_readpage(struct obd_export *exp, const struct lu_fid *fid,
1851                               struct obd_capa *oc, __u64 offset,
1852                               struct page *page,
1853                               struct ptlrpc_request **request)
1854 {
1855         int rc;
1856         ENTRY;
1857         EXP_CHECK_MD_OP(exp, readpage);
1858         EXP_MD_COUNTER_INCREMENT(exp, readpage);
1859         rc = MDP(exp->exp_obd, readpage)(exp, fid, oc, offset, page, request);
1860         RETURN(rc);
1861 }
1862
1863 static inline int md_unlink(struct obd_export *exp, struct md_op_data *op_data,
1864                             struct ptlrpc_request **request)
1865 {
1866         int rc;
1867         ENTRY;
1868         EXP_CHECK_MD_OP(exp, unlink);
1869         EXP_MD_COUNTER_INCREMENT(exp, unlink);
1870         rc = MDP(exp->exp_obd, unlink)(exp, op_data, request);
1871         RETURN(rc);
1872 }
1873
1874 static inline int md_get_lustre_md(struct obd_export *exp,
1875                                    struct ptlrpc_request *req,
1876                                    int offset, struct obd_export *dt_exp,
1877                                    struct obd_export *md_exp,
1878                                    struct lustre_md *md)
1879 {
1880         ENTRY;
1881         EXP_CHECK_MD_OP(exp, get_lustre_md);
1882         EXP_MD_COUNTER_INCREMENT(exp, get_lustre_md);
1883         RETURN(MDP(exp->exp_obd, get_lustre_md)(exp, req, offset,
1884                                                 dt_exp, md_exp, md));
1885 }
1886
1887 static inline int md_free_lustre_md(struct obd_export *exp,
1888                                     struct lustre_md *md)
1889 {
1890         ENTRY;
1891         EXP_CHECK_MD_OP(exp, free_lustre_md);
1892         EXP_MD_COUNTER_INCREMENT(exp, free_lustre_md);
1893         RETURN(MDP(exp->exp_obd, free_lustre_md)(exp, md));
1894 }
1895
1896 static inline int md_setxattr(struct obd_export *exp,
1897                               const struct lu_fid *fid, struct obd_capa *oc,
1898                               obd_valid valid, const char *name,
1899                               const char *input, int input_size,
1900                               int output_size, int flags,
1901                               struct ptlrpc_request **request)
1902 {
1903         ENTRY;
1904         EXP_CHECK_MD_OP(exp, setxattr);
1905         EXP_MD_COUNTER_INCREMENT(exp, setxattr);
1906         RETURN(MDP(exp->exp_obd, setxattr)(exp, fid, oc, valid, name, input,
1907                                            input_size, output_size, flags,
1908                                            request));
1909 }
1910
1911 static inline int md_getxattr(struct obd_export *exp,
1912                               const struct lu_fid *fid, struct obd_capa *oc,
1913                               obd_valid valid, const char *name,
1914                               const char *input, int input_size,
1915                               int output_size, int flags,
1916                               struct ptlrpc_request **request)
1917 {
1918         ENTRY;
1919         EXP_CHECK_MD_OP(exp, getxattr);
1920         EXP_MD_COUNTER_INCREMENT(exp, getxattr);
1921         RETURN(MDP(exp->exp_obd, getxattr)(exp, fid, oc, valid, name, input,
1922                                            input_size, output_size, flags,
1923                                            request));
1924 }
1925
1926 static inline int md_set_open_replay_data(struct obd_export *exp,
1927                                           struct obd_client_handle *och,
1928                                           struct ptlrpc_request *open_req)
1929 {
1930         ENTRY;
1931         EXP_CHECK_MD_OP(exp, set_open_replay_data);
1932         EXP_MD_COUNTER_INCREMENT(exp, set_open_replay_data);
1933         RETURN(MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req));
1934 }
1935
1936 static inline int md_clear_open_replay_data(struct obd_export *exp,
1937                                             struct obd_client_handle *och)
1938 {
1939         ENTRY;
1940         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
1941         EXP_MD_COUNTER_INCREMENT(exp, clear_open_replay_data);
1942         RETURN(MDP(exp->exp_obd, clear_open_replay_data)(exp, och));
1943 }
1944
1945 static inline int md_set_lock_data(struct obd_export *exp,
1946                                    __u64 *lockh, void *data)
1947 {
1948         ENTRY;
1949         EXP_CHECK_MD_OP(exp, set_lock_data);
1950         EXP_MD_COUNTER_INCREMENT(exp, set_lock_data);
1951         RETURN(MDP(exp->exp_obd, set_lock_data)(exp, lockh, data));
1952 }
1953
1954 static inline int md_cancel_unused(struct obd_export *exp,
1955                                    const struct lu_fid *fid,
1956                                    ldlm_policy_data_t *policy,
1957                                    ldlm_mode_t mode, int flags, void *opaque)
1958 {
1959         int rc;
1960         ENTRY;
1961
1962         EXP_CHECK_MD_OP(exp, cancel_unused);
1963         EXP_MD_COUNTER_INCREMENT(exp, cancel_unused);
1964
1965         rc = MDP(exp->exp_obd, cancel_unused)(exp, fid, policy, mode,
1966                                               flags, opaque);
1967         RETURN(rc);
1968 }
1969
1970 static inline ldlm_mode_t md_lock_match(struct obd_export *exp, int flags,
1971                                         const struct lu_fid *fid,
1972                                         ldlm_type_t type,
1973                                         ldlm_policy_data_t *policy,
1974                                         ldlm_mode_t mode,
1975                                         struct lustre_handle *lockh)
1976 {
1977         ENTRY;
1978         EXP_CHECK_MD_OP(exp, lock_match);
1979         EXP_MD_COUNTER_INCREMENT(exp, lock_match);
1980         RETURN(MDP(exp->exp_obd, lock_match)(exp, flags, fid, type,
1981                                              policy, mode, lockh));
1982 }
1983
1984 static inline int md_init_ea_size(struct obd_export *exp, int easize,
1985                                   int def_asize, int cookiesize)
1986 {
1987         ENTRY;
1988         EXP_CHECK_MD_OP(exp, init_ea_size);
1989         EXP_MD_COUNTER_INCREMENT(exp, init_ea_size);
1990         RETURN(MDP(exp->exp_obd, init_ea_size)(exp, easize, def_asize,
1991                                                cookiesize));
1992 }
1993
1994 static inline int md_get_remote_perm(struct obd_export *exp,
1995                                      const struct lu_fid *fid,
1996                                      struct obd_capa *oc,
1997                                      struct ptlrpc_request **request)
1998 {
1999         ENTRY;
2000         EXP_CHECK_MD_OP(exp, get_remote_perm);
2001         EXP_MD_COUNTER_INCREMENT(exp, get_remote_perm);
2002         RETURN(MDP(exp->exp_obd, get_remote_perm)(exp, fid, oc, request));
2003 }
2004
2005 static inline int md_renew_capa(struct obd_export *exp, struct obd_capa *ocapa,
2006                                 renew_capa_cb_t cb)
2007 {
2008         int rc;
2009         ENTRY;
2010         EXP_CHECK_MD_OP(exp, renew_capa);
2011         EXP_MD_COUNTER_INCREMENT(exp, renew_capa);
2012         rc = MDP(exp->exp_obd, renew_capa)(exp, ocapa, cb);
2013         RETURN(rc);
2014 }
2015
2016 /* OBD Metadata Support */
2017
2018 extern int obd_init_caches(void);
2019 extern void obd_cleanup_caches(void);
2020
2021 /* support routines */
2022 extern cfs_mem_cache_t *obdo_cachep;
2023
2024 #define OBDO_ALLOC(ptr)                                                       \
2025 do {                                                                          \
2026         OBD_SLAB_ALLOC_PTR((ptr), obdo_cachep);                               \
2027 } while(0)
2028
2029 #define OBDO_FREE(ptr)                                                        \
2030 do {                                                                          \
2031         OBD_SLAB_FREE_PTR((ptr), obdo_cachep);                                \
2032 } while(0)
2033
2034
2035 static inline void obdo2fid(struct obdo *oa, struct lu_fid *fid)
2036 {
2037         /* something here */
2038 }
2039
2040 static inline void fid2obdo(struct lu_fid *fid, struct obdo *oa)
2041 {
2042         /* something here */
2043 }
2044
2045 /* I'm as embarrassed about this as you are.
2046  *
2047  * <shaver> // XXX do not look into _superhack with remaining eye
2048  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
2049 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
2050
2051 /* sysctl.c */
2052 extern void obd_sysctl_init (void);
2053 extern void obd_sysctl_clean (void);
2054
2055 /* uuid.c  */
2056 typedef __u8 class_uuid_t[16];
2057 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
2058
2059 /* lustre_peer.c    */
2060 int lustre_uuid_to_peer(const char *uuid, lnet_nid_t *peer_nid, int index);
2061 int class_add_uuid(const char *uuid, __u64 nid);
2062 int class_del_uuid (const char *uuid);
2063 void class_init_uuidlist(void);
2064 void class_exit_uuidlist(void);
2065
2066 /* mea.c */
2067 int mea_name2idx(struct lmv_stripe_md *mea, const char *name, int namelen);
2068 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
2069
2070 /* prng.c */
2071 void ll_generate_random_uuid(class_uuid_t uuid_out);
2072
2073 #endif /* __LINUX_OBD_CLASS_H */