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 #ifndef __CLASS_OBD_H
  23 #define __CLASS_OBD_H
  24
  25 #ifndef __KERNEL__
  26 # include <liblustre.h>
  27 #endif
  28
  29 #include <obd_support.h>
  30 #include <lustre_import.h>
  31 #include <lustre_net.h>
  32 #include <obd.h>
  33 #include <lustre_lib.h>
  34 #include <lustre/lustre_idl.h>
  35 #include <lprocfs_status.h>
  36
  37 #if defined(__linux__)
  38 #include <linux/obd_class.h>
  39 #elif defined(__APPLE__)
  40 #include <darwin/obd_class.h>
  41 #elif defined(__WINNT__)
  42 #include <winnt/obd_class.h>
  43 #else
  44 #error Unsupported operating system.
  45 #endif
  46
  47 /* OBD Device Declarations */
  48 extern struct obd_device *obd_devs[MAX_OBD_DEVICES];
  49 extern spinlock_t obd_dev_lock;
  50
  51 /* OBD Operations Declarations */
  52 extern struct obd_device *class_conn2obd(struct lustre_handle *);
  53 extern struct obd_device *class_exp2obd(struct obd_export *);
  54
  55 struct lu_device_type;
  56
  57 /* genops.c */
  58 struct obd_export *class_conn2export(struct lustre_handle *);
  59 int class_register_type(struct obd_ops *, struct md_ops *,
  60                         struct lprocfs_vars *, const char *nm,
  61                         struct lu_device_type *ldt);
  62 int class_unregister_type(const char *nm);
  63
  64 struct obd_device *class_newdev(const char *type_name, const char *name);
  65 void class_release_dev(struct obd_device *obd);
  66
  67 int class_name2dev(const char *name);
  68 struct obd_device *class_name2obd(const char *name);
  69 int class_uuid2dev(struct obd_uuid *uuid);
  70 struct obd_device *class_uuid2obd(struct obd_uuid *uuid);
  71 void class_obd_list(void);
  72 struct obd_device * class_find_client_obd(struct obd_uuid *tgt_uuid,
  73                                           const char * typ_name,
  74                                           struct obd_uuid *grp_uuid);
  75 struct obd_device * class_find_client_notype(struct obd_uuid *tgt_uuid,
  76                                              struct obd_uuid *grp_uuid);
  77 struct obd_device * class_devices_in_group(struct obd_uuid *grp_uuid,
  78                                            int *next);
  79 struct obd_device * class_num2obd(int num);
  80
  81 int oig_init(struct obd_io_group **oig);
  82 int oig_add_one(struct obd_io_group *oig, struct oig_callback_context *occ);
  83 void oig_complete_one(struct obd_io_group *oig,
  84                       struct oig_callback_context *occ, int rc);
  85 void oig_release(struct obd_io_group *oig);
  86 int oig_wait(struct obd_io_group *oig);
  87
  88 char *obd_export_nid2str(struct obd_export *exp);
  89
  90 int obd_export_evict_by_nid(struct obd_device *obd, const char *nid);
  91 int obd_export_evict_by_uuid(struct obd_device *obd, const char *uuid);
  92
  93 /* obd_config.c */
  94 int class_process_config(struct lustre_cfg *lcfg);
  95 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
  96                              struct lustre_cfg *lcfg, void *data);
  97 int class_attach(struct lustre_cfg *lcfg);
  98 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
  99 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg);
 100 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg);
 101 struct obd_device *class_incref(struct obd_device *obd);
 102 void class_decref(struct obd_device *obd);
 103
 104 /*obdecho*/
 105 #ifdef LPROCFS
 106 extern void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars);
 107 #else
 108 static inline void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars)
 109 {
 110         memset(lvars, 0, sizeof(*lvars));
 111 }
 112 #endif
 113
 114 #define CFG_F_START     0x01   /* Set when we start updating from a log */
 115 #define CFG_F_MARKER    0x02   /* We are within a maker */
 116 #define CFG_F_SKIP      0x04   /* We should ignore this cfg command */
 117 #define CFG_F_COMPAT146 0x08   /* Allow old-style logs */
 118 #define CFG_F_EXCLUDE   0x10   /* OST exclusion list */
 119
 120 /* Passed as data param to class_config_parse_llog */
 121 struct config_llog_instance {
 122         char *              cfg_instance;
 123         struct super_block *cfg_sb;
 124         struct obd_uuid     cfg_uuid;
 125         int                 cfg_last_idx; /* for partial llog processing */
 126         int                 cfg_flags;
 127 };
 128 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
 129                             struct config_llog_instance *cfg);
 130 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
 131                            struct config_llog_instance *cfg);
 132
 133 /* list of active configuration logs  */
 134 struct config_llog_data {
 135         char               *cld_logname;
 136         struct ldlm_res_id  cld_resid;
 137         struct config_llog_instance cld_cfg;
 138         struct list_head    cld_list_chain;
 139         atomic_t            cld_refcount;
 140         struct obd_export  *cld_mgcexp;
 141         unsigned int        cld_stopping:1, /* we were told to stop watching */
 142                             cld_lostlock:1; /* lock not requeued */
 143 };
 144
 145 struct lustre_profile {
 146         struct list_head lp_list;
 147         char            *lp_profile;
 148         char            *lp_dt;
 149         char            *lp_md;
 150 };
 151
 152 struct lustre_profile *class_get_profile(const char * prof);
 153 void class_del_profile(const char *prof);
 154 void class_del_profiles(void);
 155
 156 #define class_export_rpc_get(exp)                                       \
 157 ({                                                                      \
 158         atomic_inc(&(exp)->exp_rpc_count);                              \
 159         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",    \
 160                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 161         class_export_get(exp);                                          \
 162 })
 163
 164 #define class_export_rpc_put(exp)                                       \
 165 ({                                                                      \
 166         atomic_dec(&(exp)->exp_rpc_count);                              \
 167         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",    \
 168                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 169         class_export_put(exp);                                          \
 170 })
 171
 172 /* genops.c */
 173 #define class_export_get(exp)                                                  \
 174 ({                                                                             \
 175         struct obd_export *exp_ = exp;                                         \
 176         atomic_inc(&exp_->exp_refcount);                                       \
 177         CDEBUG(D_INFO, "GETting export %p : new refcount %d\n", exp_,          \
 178                atomic_read(&exp_->exp_refcount));                              \
 179         exp_;                                                                  \
 180 })
 181
 182 #define class_export_put(exp)                                                  \
 183 do {                                                                           \
 184         LASSERT((exp) != NULL);                                                \
 185         CDEBUG(D_INFO, "PUTting export %p : new refcount %d\n", (exp),         \
 186                atomic_read(&(exp)->exp_refcount) - 1);                         \
 187         LASSERT(atomic_read(&(exp)->exp_refcount) > 0);                        \
 188         LASSERT(atomic_read(&(exp)->exp_refcount) < 0x5a5a5a);                 \
 189         __class_export_put(exp);                                               \
 190 } while (0)
 191
 192 void __class_export_put(struct obd_export *);
 193 struct obd_export *class_new_export(struct obd_device *obddev,
 194                                     struct obd_uuid *cluuid);
 195 void class_unlink_export(struct obd_export *exp);
 196
 197 struct obd_import *class_import_get(struct obd_import *);
 198 void class_import_put(struct obd_import *);
 199 struct obd_import *class_new_import(struct obd_device *obd);
 200 void class_destroy_import(struct obd_import *exp);
 201
 202 struct obd_type *class_search_type(const char *name);
 203 struct obd_type *class_get_type(const char *name);
 204 void class_put_type(struct obd_type *type);
 205 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 206                   struct obd_uuid *cluuid);
 207 int class_disconnect(struct obd_export *exp);
 208 void class_fail_export(struct obd_export *exp);
 209 void class_disconnect_exports(struct obd_device *obddev);
 210 int class_disconnect_stale_exports(struct obd_device *,
 211                                     int (*test_export)(struct obd_export *));
 212 int class_manual_cleanup(struct obd_device *obd);
 213
 214 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_flag valid);
 215 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
 216 void obdo_from_iattr(struct obdo *oa, struct iattr *attr,
 217                      unsigned int ia_valid);
 218 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, obd_flag valid);
 219 void md_from_obdo(struct md_op_data *op_data, struct obdo *oa, obd_flag valid);
 220 void obdo_from_md(struct obdo *oa, struct md_op_data *op_data,
 221                   unsigned int valid);
 222
 223 #define OBT(dev)        (dev)->obd_type
 224 #define OBP(dev, op)    (dev)->obd_type->typ_dt_ops->o_ ## op
 225 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
 226 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 227
 228 /* Ensure obd_setup: used for cleanup which must be called
 229    while obd is stopping */
 230 #define OBD_CHECK_DEV(obd)                                      \
 231 do {                                                            \
 232         if (!(obd)) {                                           \
 233                 CERROR("NULL device\n");                        \
 234                 RETURN(-ENODEV);                                \
 235         }                                                       \
 236 } while (0)
 237
 238 /* ensure obd_setup and !obd_stopping */
 239 #define OBD_CHECK_DEV_ACTIVE(obd)                               \
 240 do {                                                            \
 241         OBD_CHECK_DEV(obd);                                     \
 242         if (!(obd)->obd_set_up || (obd)->obd_stopping) {        \
 243                 CERROR("Device %d not setup\n",                 \
 244                        (obd)->obd_minor);                       \
 245                 RETURN(-ENODEV);                                \
 246         }                                                       \
 247 } while (0)
 248
 249
 250 #ifdef LPROCFS
 251 #define OBD_COUNTER_OFFSET(op)                                  \
 252         ((offsetof(struct obd_ops, o_ ## op) -                  \
 253           offsetof(struct obd_ops, o_iocontrol))                \
 254          / sizeof(((struct obd_ops *)(0))->o_iocontrol))
 255
 256 #define OBD_COUNTER_INCREMENT(obdx, op)                           \
 257         if ((obdx)->obd_stats != NULL) {                          \
 258                 unsigned int coffset;                             \
 259                 coffset = (unsigned int)((obdx)->obd_cntr_base) + \
 260                         OBD_COUNTER_OFFSET(op);                   \
 261                 LASSERT(coffset < (obdx)->obd_stats->ls_num);     \
 262                 lprocfs_counter_incr((obdx)->obd_stats, coffset); \
 263         }
 264
 265 #define EXP_COUNTER_INCREMENT(export, op)                                    \
 266         if ((export)->exp_obd->obd_stats != NULL) {                          \
 267                 unsigned int coffset;                                        \
 268                 coffset = (unsigned int)((export)->exp_obd->obd_cntr_base) + \
 269                         OBD_COUNTER_OFFSET(op);                              \
 270                 LASSERT(coffset < (export)->exp_obd->obd_stats->ls_num);     \
 271                 lprocfs_counter_incr((export)->exp_obd->obd_stats, coffset); \
 272                 if ((export)->exp_nid_stats != NULL &&                       \
 273                     (export)->exp_nid_stats->nid_stats != NULL)              \
 274                         lprocfs_counter_incr(                                \
 275                                 (export)->exp_nid_stats->nid_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)
 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);
 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                               void *localdata)
 799 {
 800         int rc;
 801 #ifdef LIBCFS_DEBUG
 802         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 803                                                    * check */
 804 #endif
 805         ENTRY;
 806
 807         OBD_CHECK_DEV_ACTIVE(obd);
 808         OBD_CHECK_DT_OP(obd, connect, -EOPNOTSUPP);
 809         OBD_COUNTER_INCREMENT(obd, connect);
 810
 811         rc = OBP(obd, connect)(env, conn, obd, cluuid, d, localdata);
 812         /* check that only subset is granted */
 813         LASSERT(ergo(d != NULL,
 814                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 815         RETURN(rc);
 816 }
 817
 818 static inline int obd_reconnect(const struct lu_env *env,
 819                                 struct obd_export *exp,
 820                                 struct obd_device *obd,
 821                                 struct obd_uuid *cluuid,
 822                                 struct obd_connect_data *d)
 823 {
 824         int rc;
 825 #ifdef LIBCFS_DEBUG
 826         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 827                                                    * check */
 828 #endif
 829
 830         ENTRY;
 831
 832         OBD_CHECK_DEV_ACTIVE(obd);
 833         OBD_CHECK_DT_OP(obd, reconnect, 0);
 834         OBD_COUNTER_INCREMENT(obd, reconnect);
 835
 836         rc = OBP(obd, reconnect)(env, exp, obd, cluuid, d);
 837         /* check that only subset is granted */
 838         LASSERT(ergo(d != NULL,
 839                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 840         RETURN(rc);
 841 }
 842
 843 static inline int obd_disconnect(struct obd_export *exp)
 844 {
 845         int rc;
 846         ENTRY;
 847
 848         EXP_CHECK_DT_OP(exp, disconnect);
 849         EXP_COUNTER_INCREMENT(exp, disconnect);
 850
 851         rc = OBP(exp->exp_obd, disconnect)(exp);
 852         RETURN(rc);
 853 }
 854
 855 static inline int obd_fid_init(struct obd_export *exp)
 856 {
 857         int rc;
 858         ENTRY;
 859
 860         OBD_CHECK_DT_OP(exp->exp_obd, fid_init, 0);
 861         EXP_COUNTER_INCREMENT(exp, fid_init);
 862
 863         rc = OBP(exp->exp_obd, fid_init)(exp);
 864         RETURN(rc);
 865 }
 866
 867 static inline int obd_fid_fini(struct obd_export *exp)
 868 {
 869         int rc;
 870         ENTRY;
 871
 872         OBD_CHECK_DT_OP(exp->exp_obd, fid_fini, 0);
 873         EXP_COUNTER_INCREMENT(exp, fid_fini);
 874
 875         rc = OBP(exp->exp_obd, fid_fini)(exp);
 876         RETURN(rc);
 877 }
 878
 879 static inline int obd_fid_alloc(struct obd_export *exp,
 880                                 struct lu_fid *fid,
 881                                 struct md_op_data *op_data)
 882 {
 883         int rc;
 884         ENTRY;
 885
 886         EXP_CHECK_DT_OP(exp, fid_alloc);
 887         EXP_COUNTER_INCREMENT(exp, fid_alloc);
 888
 889         rc = OBP(exp->exp_obd, fid_alloc)(exp, fid, op_data);
 890         RETURN(rc);
 891 }
 892
 893 static inline int obd_fid_delete(struct obd_export *exp,
 894                                  const struct lu_fid *fid)
 895 {
 896         int rc;
 897         ENTRY;
 898
 899         EXP_CHECK_DT_OP(exp, fid_delete);
 900         EXP_COUNTER_INCREMENT(exp, fid_delete);
 901
 902         rc = OBP(exp->exp_obd, fid_delete)(exp, fid);
 903         RETURN(rc);
 904 }
 905
 906 static inline int obd_ping(struct obd_export *exp)
 907 {
 908         int rc;
 909         ENTRY;
 910
 911         OBD_CHECK_DT_OP(exp->exp_obd, ping, 0);
 912         EXP_COUNTER_INCREMENT(exp, ping);
 913
 914         rc = OBP(exp->exp_obd, ping)(exp);
 915         RETURN(rc);
 916 }
 917
 918 static inline int obd_init_export(struct obd_export *exp)
 919 {
 920         int rc = 0;
 921
 922         ENTRY;
 923         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 924             OBP((exp)->exp_obd, init_export))
 925                 rc = OBP(exp->exp_obd, init_export)(exp);
 926         RETURN(rc);
 927 }
 928
 929 static inline int obd_destroy_export(struct obd_export *exp)
 930 {
 931         ENTRY;
 932         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 933             OBP((exp)->exp_obd, destroy_export))
 934                 OBP(exp->exp_obd, destroy_export)(exp);
 935         RETURN(0);
 936 }
 937
 938 static inline int obd_extent_calc(struct obd_export *exp,
 939                                   struct lov_stripe_md *md,
 940                                   int cmd, obd_off *offset)
 941 {
 942         int rc;
 943         ENTRY;
 944         EXP_CHECK_DT_OP(exp, extent_calc);
 945         rc = OBP(exp->exp_obd, extent_calc)(exp, md, cmd, offset);
 946         RETURN(rc);
 947 }
 948
 949 static inline struct dentry *
 950 obd_lvfs_fid2dentry(struct obd_export *exp, __u64 id_ino, __u32 gen, __u64 gr)
 951 {
 952         LASSERT(exp->exp_obd);
 953
 954         return lvfs_fid2dentry(&exp->exp_obd->obd_lvfs_ctxt, id_ino, gen, gr,
 955                                exp->exp_obd);
 956 }
 957
 958 static inline int
 959 obd_lvfs_open_llog(struct obd_export *exp, __u64 id_ino, struct dentry *dentry)
 960 {
 961         LASSERT(exp->exp_obd);
 962         CERROR("FIXME what's the story here?  This needs to be an obd fn?\n");
 963 #if 0
 964         return lvfs_open_llog(&exp->exp_obd->obd_lvfs_ctxt, id_ino,
 965                               dentry, exp->exp_obd);
 966 #endif
 967         return 0;
 968 }
 969
 970 #ifndef time_before
 971 #define time_before(t1, t2) ((long)t2 - (long)t1 > 0)
 972 #endif
 973
 974 /* @max_age is the oldest time in jiffies that we accept using a cached data.
 975  * If the cache is older than @max_age we will get a new value from the
 976  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
 977 static inline int obd_statfs_async(struct obd_device *obd,
 978                                    struct obd_info *oinfo,
 979                                    __u64 max_age,
 980                                    struct ptlrpc_request_set *rqset)
 981 {
 982         int rc = 0;
 983         ENTRY;
 984
 985         if (obd == NULL)
 986                 RETURN(-EINVAL);
 987
 988         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
 989         OBD_COUNTER_INCREMENT(obd, statfs);
 990
 991         CDEBUG(D_SUPER, "%s: osfs %p age "LPU64", max_age "LPU64"\n",
 992                obd->obd_name, &obd->obd_osfs, obd->obd_osfs_age, max_age);
 993         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
 994                 rc = OBP(obd, statfs_async)(obd, oinfo, max_age, rqset);
 995         } else {
 996                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
 997                        " objects "LPU64"/"LPU64"\n",
 998                        obd->obd_name, &obd->obd_osfs,
 999                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1000                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1001                 spin_lock(&obd->obd_osfs_lock);
1002                 memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
1003                 spin_unlock(&obd->obd_osfs_lock);
1004                 if (oinfo->oi_cb_up)
1005                         oinfo->oi_cb_up(oinfo, 0);
1006         }
1007         RETURN(rc);
1008 }
1009
1010 static inline int obd_statfs_rqset(struct obd_device *obd,
1011                                    struct obd_statfs *osfs, __u64 max_age,
1012                                    __u32 flags)
1013 {
1014         struct ptlrpc_request_set *set = NULL;
1015         struct obd_info oinfo = { { { 0 } } };
1016         int rc = 0;
1017         ENTRY;
1018
1019         set =  ptlrpc_prep_set();
1020         if (set == NULL)
1021                 RETURN(-ENOMEM);
1022
1023         oinfo.oi_osfs = osfs;
1024         oinfo.oi_flags = flags;
1025         rc = obd_statfs_async(obd, &oinfo, max_age, set);
1026         if (rc == 0)
1027                 rc = ptlrpc_set_wait(set);
1028         ptlrpc_set_destroy(set);
1029         RETURN(rc);
1030 }
1031
1032 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1033  * If the cache is older than @max_age we will get a new value from the
1034  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1035 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
1036                              __u64 max_age, __u32 flags)
1037 {
1038         int rc = 0;
1039         ENTRY;
1040
1041         if (obd == NULL)
1042                 RETURN(-EINVAL);
1043
1044         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1045         OBD_COUNTER_INCREMENT(obd, statfs);
1046
1047         CDEBUG(D_SUPER, "osfs "LPU64", max_age "LPU64"\n",
1048                obd->obd_osfs_age, max_age);
1049         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1050                 rc = OBP(obd, statfs)(obd, osfs, max_age, flags);
1051                 if (rc == 0) {
1052                         spin_lock(&obd->obd_osfs_lock);
1053                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
1054                         obd->obd_osfs_age = cfs_time_current_64();
1055                         spin_unlock(&obd->obd_osfs_lock);
1056                 }
1057         } else {
1058                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1059                        " objects "LPU64"/"LPU64"\n",
1060                        obd->obd_name, &obd->obd_osfs,
1061                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1062                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1063                 spin_lock(&obd->obd_osfs_lock);
1064                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
1065                 spin_unlock(&obd->obd_osfs_lock);
1066         }
1067         RETURN(rc);
1068 }
1069
1070 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
1071                            struct lov_stripe_md *ea, obd_size start,
1072                            obd_size end, void *capa)
1073 {
1074         int rc;
1075         ENTRY;
1076
1077         OBD_CHECK_DT_OP(exp->exp_obd, sync, -EOPNOTSUPP);
1078         EXP_COUNTER_INCREMENT(exp, sync);
1079
1080         rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end, capa);
1081         RETURN(rc);
1082 }
1083
1084 static inline int obd_punch_rqset(struct obd_export *exp,
1085                                   struct obd_info *oinfo,
1086                                   struct obd_trans_info *oti)
1087 {
1088         struct ptlrpc_request_set *set = NULL;
1089         int rc;
1090         ENTRY;
1091
1092         EXP_CHECK_DT_OP(exp, punch);
1093         EXP_COUNTER_INCREMENT(exp, punch);
1094
1095         set =  ptlrpc_prep_set();
1096         if (set == NULL)
1097                 RETURN(-ENOMEM);
1098
1099         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, set);
1100         if (rc == 0)
1101                 rc = ptlrpc_set_wait(set);
1102         ptlrpc_set_destroy(set);
1103         RETURN(rc);
1104 }
1105
1106 static inline int obd_punch(struct obd_export *exp, struct obd_info *oinfo,
1107                             struct obd_trans_info *oti,
1108                             struct ptlrpc_request_set *rqset)
1109 {
1110         int rc;
1111         ENTRY;
1112
1113         EXP_CHECK_DT_OP(exp, punch);
1114         EXP_COUNTER_INCREMENT(exp, punch);
1115
1116         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, rqset);
1117         RETURN(rc);
1118 }
1119
1120 static inline int obd_brw(int cmd, struct obd_export *exp,
1121                           struct obd_info *oinfo, obd_count oa_bufs,
1122                           struct brw_page *pg, struct obd_trans_info *oti)
1123 {
1124         int rc;
1125         ENTRY;
1126
1127         EXP_CHECK_DT_OP(exp, brw);
1128         EXP_COUNTER_INCREMENT(exp, brw);
1129
1130         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
1131                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
1132                        "or OBD_BRW_CHECK\n");
1133                 LBUG();
1134         }
1135
1136         rc = OBP(exp->exp_obd, brw)(cmd, exp, oinfo, oa_bufs, pg, oti);
1137         RETURN(rc);
1138 }
1139
1140 static inline int obd_brw_async(int cmd, struct obd_export *exp,
1141                                 struct obd_info *oinfo, obd_count oa_bufs,
1142                                 struct brw_page *pg, struct obd_trans_info *oti,
1143                                 struct ptlrpc_request_set *set)
1144 {
1145         int rc;
1146         ENTRY;
1147
1148         EXP_CHECK_DT_OP(exp, brw_async);
1149         EXP_COUNTER_INCREMENT(exp, brw_async);
1150
1151         if (!(cmd & OBD_BRW_RWMASK)) {
1152                 CERROR("obd_brw: cmd must be OBD_BRW_READ or OBD_BRW_WRITE\n");
1153                 LBUG();
1154         }
1155
1156         rc = OBP(exp->exp_obd, brw_async)(cmd, exp, oinfo, oa_bufs, pg,oti,set);
1157         RETURN(rc);
1158 }
1159
1160 static inline int obd_brw_rqset(int cmd, struct obd_export *exp,
1161                                 struct obdo *oa, struct lov_stripe_md *lsm,
1162                                 obd_count oa_bufs, struct brw_page *pg,
1163                                 struct obd_trans_info *oti,
1164                                 struct obd_capa *ocapa)
1165 {
1166         struct ptlrpc_request_set *set = NULL;
1167         struct obd_info oinfo = { { { 0 } } };
1168         int rc = 0;
1169         ENTRY;
1170
1171         set =  ptlrpc_prep_set();
1172         if (set == NULL)
1173                 RETURN(-ENOMEM);
1174
1175         oinfo.oi_oa = oa;
1176         oinfo.oi_md = lsm;
1177         oinfo.oi_capa = ocapa;
1178         rc = obd_brw_async(cmd, exp, &oinfo, oa_bufs, pg, oti, set);
1179         if (rc == 0) {
1180                 rc = ptlrpc_set_wait(set);
1181                 if (rc)
1182                         CERROR("error from callback: rc = %d\n", rc);
1183         } else {
1184                 CDEBUG(rc == -ENOSPC ? D_INODE : D_ERROR,
1185                        "error from obd_brw_async: rc = %d\n", rc);
1186         }
1187         ptlrpc_set_destroy(set);
1188         RETURN(rc);
1189 }
1190
1191 static inline  int obd_prep_async_page(struct obd_export *exp,
1192                                        struct lov_stripe_md *lsm,
1193                                        struct lov_oinfo *loi,
1194                                        cfs_page_t *page, obd_off offset,
1195                                        struct obd_async_page_ops *ops,
1196                                        void *data, void **res)
1197 {
1198         int ret;
1199         ENTRY;
1200
1201         EXP_CHECK_DT_OP(exp, prep_async_page);
1202         EXP_COUNTER_INCREMENT(exp, prep_async_page);
1203
1204         ret = OBP(exp->exp_obd, prep_async_page)(exp, lsm, loi, page, offset,
1205                                                  ops, data, res);
1206         RETURN(ret);
1207 }
1208
1209 static inline int obd_queue_async_io(struct obd_export *exp,
1210                                      struct lov_stripe_md *lsm,
1211                                      struct lov_oinfo *loi, void *cookie,
1212                                      int cmd, obd_off off, int count,
1213                                      obd_flag brw_flags, obd_flag async_flags)
1214 {
1215         int rc;
1216         ENTRY;
1217
1218         EXP_CHECK_DT_OP(exp, queue_async_io);
1219         EXP_COUNTER_INCREMENT(exp, queue_async_io);
1220         LASSERT(cmd & OBD_BRW_RWMASK);
1221
1222         rc = OBP(exp->exp_obd, queue_async_io)(exp, lsm, loi, cookie, cmd, off,
1223                                                count, brw_flags, async_flags);
1224         RETURN(rc);
1225 }
1226
1227 static inline int obd_set_async_flags(struct obd_export *exp,
1228                                       struct lov_stripe_md *lsm,
1229                                       struct lov_oinfo *loi, void *cookie,
1230                                       obd_flag async_flags)
1231 {
1232         int rc;
1233         ENTRY;
1234
1235         EXP_CHECK_DT_OP(exp, set_async_flags);
1236         EXP_COUNTER_INCREMENT(exp, set_async_flags);
1237
1238         rc = OBP(exp->exp_obd, set_async_flags)(exp, lsm, loi, cookie,
1239                                                 async_flags);
1240         RETURN(rc);
1241 }
1242
1243 static inline int obd_queue_group_io(struct obd_export *exp,
1244                                      struct lov_stripe_md *lsm,
1245                                      struct lov_oinfo *loi,
1246                                      struct obd_io_group *oig,
1247                                      void *cookie, int cmd, obd_off off,
1248                                      int count, obd_flag brw_flags,
1249                                      obd_flag async_flags)
1250 {
1251         int rc;
1252         ENTRY;
1253
1254         EXP_CHECK_DT_OP(exp, queue_group_io);
1255         EXP_COUNTER_INCREMENT(exp, queue_group_io);
1256         LASSERT(cmd & OBD_BRW_RWMASK);
1257
1258         rc = OBP(exp->exp_obd, queue_group_io)(exp, lsm, loi, oig, cookie,
1259                                                cmd, off, count, brw_flags,
1260                                                async_flags);
1261         RETURN(rc);
1262 }
1263
1264 static inline int obd_trigger_group_io(struct obd_export *exp,
1265                                        struct lov_stripe_md *lsm,
1266                                        struct lov_oinfo *loi,
1267                                        struct obd_io_group *oig)
1268 {
1269         int rc;
1270         ENTRY;
1271
1272         EXP_CHECK_DT_OP(exp, trigger_group_io);
1273         EXP_COUNTER_INCREMENT(exp, trigger_group_io);
1274
1275         rc = OBP(exp->exp_obd, trigger_group_io)(exp, lsm, loi, oig);
1276         RETURN(rc);
1277 }
1278
1279 static inline int obd_teardown_async_page(struct obd_export *exp,
1280                                           struct lov_stripe_md *lsm,
1281                                           struct lov_oinfo *loi, void *cookie)
1282 {
1283         int rc;
1284         ENTRY;
1285
1286         EXP_CHECK_DT_OP(exp, teardown_async_page);
1287         EXP_COUNTER_INCREMENT(exp, teardown_async_page);
1288
1289         rc = OBP(exp->exp_obd, teardown_async_page)(exp, lsm, loi, cookie);
1290         RETURN(rc);
1291 }
1292
1293 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
1294                              int objcount, struct obd_ioobj *obj,
1295                              int niocount, struct niobuf_remote *remote,
1296                              struct niobuf_local *local,
1297                              struct obd_trans_info *oti,
1298                              struct lustre_capa *capa)
1299 {
1300         int rc;
1301         ENTRY;
1302
1303         EXP_CHECK_DT_OP(exp, preprw);
1304         EXP_COUNTER_INCREMENT(exp, preprw);
1305
1306         rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, niocount,
1307                                        remote, local, oti, capa);
1308         RETURN(rc);
1309 }
1310
1311 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
1312                                int objcount, struct obd_ioobj *obj,
1313                                int niocount, struct niobuf_local *local,
1314                                struct obd_trans_info *oti, int rc)
1315 {
1316         ENTRY;
1317
1318         EXP_CHECK_DT_OP(exp, commitrw);
1319         EXP_COUNTER_INCREMENT(exp, commitrw);
1320
1321         rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj, niocount,
1322                                          local, oti, rc);
1323         RETURN(rc);
1324 }
1325
1326 static inline int obd_merge_lvb(struct obd_export *exp,
1327                                 struct lov_stripe_md *lsm,
1328                                 struct ost_lvb *lvb, int kms_only)
1329 {
1330         int rc;
1331         ENTRY;
1332
1333         EXP_CHECK_DT_OP(exp, merge_lvb);
1334         EXP_COUNTER_INCREMENT(exp, merge_lvb);
1335
1336         rc = OBP(exp->exp_obd, merge_lvb)(exp, lsm, lvb, kms_only);
1337         RETURN(rc);
1338 }
1339
1340 static inline int obd_adjust_kms(struct obd_export *exp,
1341                                  struct lov_stripe_md *lsm, obd_off size,
1342                                  int shrink)
1343 {
1344         int rc;
1345         ENTRY;
1346
1347         EXP_CHECK_DT_OP(exp, adjust_kms);
1348         EXP_COUNTER_INCREMENT(exp, adjust_kms);
1349
1350         rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
1351         RETURN(rc);
1352 }
1353
1354 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1355                                 int len, void *karg, void *uarg)
1356 {
1357         int rc;
1358         ENTRY;
1359
1360         EXP_CHECK_DT_OP(exp, iocontrol);
1361         EXP_COUNTER_INCREMENT(exp, iocontrol);
1362
1363         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1364         RETURN(rc);
1365 }
1366
1367 static inline int obd_enqueue_rqset(struct obd_export *exp,
1368                                     struct obd_info *oinfo,
1369                                     struct ldlm_enqueue_info *einfo)
1370 {
1371         struct ptlrpc_request_set *set = NULL;
1372         int rc;
1373         ENTRY;
1374
1375         EXP_CHECK_DT_OP(exp, enqueue);
1376         EXP_COUNTER_INCREMENT(exp, enqueue);
1377
1378         set =  ptlrpc_prep_set();
1379         if (set == NULL)
1380                 RETURN(-ENOMEM);
1381
1382         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1383         if (rc == 0)
1384                 rc = ptlrpc_set_wait(set);
1385         ptlrpc_set_destroy(set);
1386         RETURN(rc);
1387 }
1388
1389 static inline int obd_enqueue(struct obd_export *exp,
1390                               struct obd_info *oinfo,
1391                               struct ldlm_enqueue_info *einfo,
1392                               struct ptlrpc_request_set *set)
1393 {
1394         int rc;
1395         ENTRY;
1396
1397         EXP_CHECK_DT_OP(exp, enqueue);
1398         EXP_COUNTER_INCREMENT(exp, enqueue);
1399
1400         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1401         RETURN(rc);
1402 }
1403
1404 static inline int obd_match(struct obd_export *exp, struct lov_stripe_md *ea,
1405                             __u32 type, ldlm_policy_data_t *policy, __u32 mode,
1406                             int *flags, void *data, struct lustre_handle *lockh)
1407 {
1408         int rc;
1409         ENTRY;
1410
1411         EXP_CHECK_DT_OP(exp, match);
1412         EXP_COUNTER_INCREMENT(exp, match);
1413
1414         rc = OBP(exp->exp_obd, match)(exp, ea, type, policy, mode, flags, data,
1415                                       lockh);
1416         RETURN(rc);
1417 }
1418
1419 static inline int obd_change_cbdata(struct obd_export *exp,
1420                                     struct lov_stripe_md *lsm,
1421                                     ldlm_iterator_t it, void *data)
1422 {
1423         int rc;
1424         ENTRY;
1425
1426         EXP_CHECK_DT_OP(exp, change_cbdata);
1427         EXP_COUNTER_INCREMENT(exp, change_cbdata);
1428
1429         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1430         RETURN(rc);
1431 }
1432
1433 static inline int obd_cancel(struct obd_export *exp,
1434                              struct lov_stripe_md *ea, __u32 mode,
1435                              struct lustre_handle *lockh)
1436 {
1437         int rc;
1438         ENTRY;
1439
1440         EXP_CHECK_DT_OP(exp, cancel);
1441         EXP_COUNTER_INCREMENT(exp, cancel);
1442
1443         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1444         RETURN(rc);
1445 }
1446
1447 static inline int obd_cancel_unused(struct obd_export *exp,
1448                                     struct lov_stripe_md *ea,
1449                                     int flags, void *opaque)
1450 {
1451         int rc;
1452         ENTRY;
1453
1454         EXP_CHECK_DT_OP(exp, cancel_unused);
1455         EXP_COUNTER_INCREMENT(exp, cancel_unused);
1456
1457         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1458         RETURN(rc);
1459 }
1460
1461 static inline int obd_join_lru(struct obd_export *exp,
1462                                struct lov_stripe_md *ea, int join)
1463 {
1464         int rc;
1465         ENTRY;
1466
1467         EXP_CHECK_DT_OP(exp, join_lru);
1468         EXP_COUNTER_INCREMENT(exp, join_lru);
1469
1470         rc = OBP(exp->exp_obd, join_lru)(exp, ea, join);
1471         RETURN(rc);
1472 }
1473
1474 static inline int obd_pin(struct obd_export *exp, const struct lu_fid *fid,
1475                           struct obd_capa *oc, struct obd_client_handle *handle,
1476                           int flag)
1477 {
1478         int rc;
1479         ENTRY;
1480
1481         EXP_CHECK_DT_OP(exp, pin);
1482         EXP_COUNTER_INCREMENT(exp, pin);
1483
1484         rc = OBP(exp->exp_obd, pin)(exp, fid, oc, handle, flag);
1485         RETURN(rc);
1486 }
1487
1488 static inline int obd_unpin(struct obd_export *exp,
1489                             struct obd_client_handle *handle, int flag)
1490 {
1491         int rc;
1492         ENTRY;
1493
1494         EXP_CHECK_DT_OP(exp, unpin);
1495         EXP_COUNTER_INCREMENT(exp, unpin);
1496
1497         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1498         RETURN(rc);
1499 }
1500
1501
1502 static inline void obd_import_event(struct obd_device *obd,
1503                                     struct obd_import *imp,
1504                                     enum obd_import_event event)
1505 {
1506         ENTRY;
1507         if (!obd) {
1508                 CERROR("NULL device\n");
1509                 EXIT;
1510                 return;
1511         }
1512         if (obd->obd_set_up && OBP(obd, import_event)) {
1513                 OBD_COUNTER_INCREMENT(obd, import_event);
1514                 OBP(obd, import_event)(obd, imp, event);
1515         }
1516         EXIT;
1517 }
1518
1519 static inline int obd_llog_connect(struct obd_export *exp,
1520                                    struct llogd_conn_body *body)
1521 {
1522         int rc;
1523         ENTRY;
1524
1525         OBD_CHECK_DT_OP(exp->exp_obd, llog_connect, 0);
1526         EXP_COUNTER_INCREMENT(exp, llog_connect);
1527
1528         rc = OBP(exp->exp_obd, llog_connect)(exp, body);
1529         RETURN(rc);
1530 }
1531
1532
1533 static inline int obd_notify(struct obd_device *obd,
1534                              struct obd_device *watched,
1535                              enum obd_notify_event ev,
1536                              void *data)
1537 {
1538         int rc;
1539         ENTRY;
1540         OBD_CHECK_DEV(obd);
1541
1542         /* the check for async_recov is a complete hack - I'm hereby
1543            overloading the meaning to also mean "this was called from
1544            mds_postsetup".  I know that my mds is able to handle notifies
1545            by this point, and it needs to get them to execute mds_postrecov. */
1546         if (!obd->obd_set_up && !obd->obd_async_recov) {
1547                 CDEBUG(D_HA, "obd %s not set up\n", obd->obd_name);
1548                 RETURN(-EINVAL);
1549         }
1550
1551         if (!OBP(obd, notify)) {
1552                 CERROR("obd %s has no notify handler\n", obd->obd_name);
1553                 RETURN(-ENOSYS);
1554         }
1555
1556         OBD_COUNTER_INCREMENT(obd, notify);
1557         rc = OBP(obd, notify)(obd, watched, ev, data);
1558         RETURN(rc);
1559 }
1560
1561 static inline int obd_notify_observer(struct obd_device *observer,
1562                                       struct obd_device *observed,
1563                                       enum obd_notify_event ev,
1564                                       void *data)
1565 {
1566         int rc1;
1567         int rc2;
1568
1569         struct obd_notify_upcall *onu;
1570
1571         if (observer->obd_observer)
1572                 rc1 = obd_notify(observer->obd_observer, observed, ev, data);
1573         else
1574                 rc1 = 0;
1575         /*
1576          * Also, call non-obd listener, if any
1577          */
1578         onu = &observer->obd_upcall;
1579         if (onu->onu_upcall != NULL)
1580                 rc2 = onu->onu_upcall(observer, observed, ev, onu->onu_owner);
1581         else
1582                 rc2 = 0;
1583
1584         return rc1 ? rc1 : rc2;
1585 }
1586
1587 static inline int obd_quotacheck(struct obd_export *exp,
1588                                  struct obd_quotactl *oqctl)
1589 {
1590         int rc;
1591         ENTRY;
1592
1593         EXP_CHECK_DT_OP(exp, quotacheck);
1594         EXP_COUNTER_INCREMENT(exp, quotacheck);
1595
1596         rc = OBP(exp->exp_obd, quotacheck)(exp, oqctl);
1597         RETURN(rc);
1598 }
1599
1600 static inline int obd_quotactl(struct obd_export *exp,
1601                                struct obd_quotactl *oqctl)
1602 {
1603         int rc;
1604         ENTRY;
1605
1606         EXP_CHECK_DT_OP(exp, quotactl);
1607         EXP_COUNTER_INCREMENT(exp, quotactl);
1608
1609         rc = OBP(exp->exp_obd, quotactl)(exp, oqctl);
1610         RETURN(rc);
1611 }
1612
1613 static inline int obd_health_check(struct obd_device *obd)
1614 {
1615         /* returns: 0 on healthy
1616          *         >0 on unhealthy + reason code/flag
1617          *            however the only suppored reason == 1 right now
1618          *            We'll need to define some better reasons
1619          *            or flags in the future.
1620          *         <0 on error
1621          */
1622         int rc;
1623         ENTRY;
1624
1625         /* don't use EXP_CHECK_DT_OP, because NULL method is normal here */
1626         if (obd == NULL || !OBT(obd)) {
1627                 CERROR("cleaned up obd\n");
1628                 RETURN(-EOPNOTSUPP);
1629         }
1630         if (!obd->obd_set_up || obd->obd_stopping)
1631                 RETURN(0);
1632         if (!OBP(obd, health_check))
1633                 RETURN(0);
1634
1635         rc = OBP(obd, health_check)(obd);
1636         RETURN(rc);
1637 }
1638
1639 static inline int obd_register_observer(struct obd_device *obd,
1640                                         struct obd_device *observer)
1641 {
1642         ENTRY;
1643         OBD_CHECK_DEV(obd);
1644         if (obd->obd_observer && observer)
1645                 RETURN(-EALREADY);
1646         obd->obd_observer = observer;
1647         RETURN(0);
1648 }
1649
1650 /* metadata helpers */
1651 static inline int md_getstatus(struct obd_export *exp,
1652                                struct lu_fid *fid, struct obd_capa **pc)
1653 {
1654         int rc;
1655         ENTRY;
1656
1657         EXP_CHECK_MD_OP(exp, getstatus);
1658         EXP_MD_COUNTER_INCREMENT(exp, getstatus);
1659         rc = MDP(exp->exp_obd, getstatus)(exp, fid, pc);
1660         RETURN(rc);
1661 }
1662
1663 static inline int md_getattr(struct obd_export *exp, const struct lu_fid *fid,
1664                              struct obd_capa *oc, obd_valid valid, int ea_size,
1665                              struct ptlrpc_request **request)
1666 {
1667         int rc;
1668         ENTRY;
1669         EXP_CHECK_MD_OP(exp, getattr);
1670         EXP_MD_COUNTER_INCREMENT(exp, getattr);
1671         rc = MDP(exp->exp_obd, getattr)(exp, fid, oc, valid,
1672                                         ea_size, request);
1673         RETURN(rc);
1674 }
1675
1676 static inline int md_change_cbdata(struct obd_export *exp,
1677                                    const struct lu_fid *fid,
1678                                    ldlm_iterator_t it, void *data)
1679 {
1680         int rc;
1681         ENTRY;
1682         EXP_CHECK_MD_OP(exp, change_cbdata);
1683         EXP_MD_COUNTER_INCREMENT(exp, change_cbdata);
1684         rc = MDP(exp->exp_obd, change_cbdata)(exp, fid, it, data);
1685         RETURN(rc);
1686 }
1687
1688 static inline int md_close(struct obd_export *exp, struct md_op_data *op_data,
1689                            struct md_open_data *mod,
1690                            struct ptlrpc_request **request)
1691 {
1692         int rc;
1693         ENTRY;
1694         EXP_CHECK_MD_OP(exp, close);
1695         EXP_MD_COUNTER_INCREMENT(exp, close);
1696         rc = MDP(exp->exp_obd, close)(exp, op_data, mod, request);
1697         RETURN(rc);
1698 }
1699
1700 static inline int md_create(struct obd_export *exp, struct md_op_data *op_data,
1701                             const void *data, int datalen, int mode, __u32 uid,
1702                             __u32 gid, __u32 cap_effective, __u64 rdev,
1703                             struct ptlrpc_request **request)
1704 {
1705         int rc;
1706         ENTRY;
1707         EXP_CHECK_MD_OP(exp, create);
1708         EXP_MD_COUNTER_INCREMENT(exp, create);
1709         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1710                                        uid, gid, cap_effective, rdev, request);
1711         RETURN(rc);
1712 }
1713
1714 static inline int md_done_writing(struct obd_export *exp,
1715                                   struct md_op_data *op_data,
1716                                   struct md_open_data *mod)
1717 {
1718         int rc;
1719         ENTRY;
1720         EXP_CHECK_MD_OP(exp, done_writing);
1721         EXP_MD_COUNTER_INCREMENT(exp, done_writing);
1722         rc = MDP(exp->exp_obd, done_writing)(exp, op_data, mod);
1723         RETURN(rc);
1724 }
1725
1726 static inline int md_enqueue(struct obd_export *exp,
1727                              struct ldlm_enqueue_info *einfo,
1728                              struct lookup_intent *it,
1729                              struct md_op_data *op_data,
1730                              struct lustre_handle *lockh,
1731                              void *lmm, int lmmsize,
1732                              int extra_lock_flags)
1733 {
1734         int rc;
1735         ENTRY;
1736         EXP_CHECK_MD_OP(exp, enqueue);
1737         EXP_MD_COUNTER_INCREMENT(exp, enqueue);
1738         rc = MDP(exp->exp_obd, enqueue)(exp, einfo, it, op_data, lockh,
1739                                         lmm, lmmsize, extra_lock_flags);
1740         RETURN(rc);
1741 }
1742
1743 static inline int md_getattr_name(struct obd_export *exp,
1744                                   const struct lu_fid *fid, struct obd_capa *oc,
1745                                   const char *name, int namelen,
1746                                   obd_valid valid, int ea_size, __u32 suppgid,
1747                                   struct ptlrpc_request **request)
1748 {
1749         int rc;
1750         ENTRY;
1751         EXP_CHECK_MD_OP(exp, getattr_name);
1752         EXP_MD_COUNTER_INCREMENT(exp, getattr_name);
1753         rc = MDP(exp->exp_obd, getattr_name)(exp, fid, oc, name, namelen,
1754                                              valid, ea_size, suppgid, request);
1755         RETURN(rc);
1756 }
1757
1758 static inline int md_intent_lock(struct obd_export *exp,
1759                                  struct md_op_data *op_data, void *lmm,
1760                                  int lmmsize, struct lookup_intent *it,
1761                                  int flags, struct ptlrpc_request **reqp,
1762                                  ldlm_blocking_callback cb_blocking,
1763                                  int extra_lock_flags)
1764 {
1765         int rc;
1766         ENTRY;
1767         EXP_CHECK_MD_OP(exp, intent_lock);
1768         EXP_MD_COUNTER_INCREMENT(exp, intent_lock);
1769         rc = MDP(exp->exp_obd, intent_lock)(exp, op_data, lmm, lmmsize,
1770                                             it, flags, reqp, cb_blocking,
1771                                             extra_lock_flags);
1772         RETURN(rc);
1773 }
1774
1775 static inline int md_link(struct obd_export *exp, struct md_op_data *op_data,
1776                           struct ptlrpc_request **request)
1777 {
1778         int rc;
1779         ENTRY;
1780         EXP_CHECK_MD_OP(exp, link);
1781         EXP_MD_COUNTER_INCREMENT(exp, link);
1782         rc = MDP(exp->exp_obd, link)(exp, op_data, request);
1783         RETURN(rc);
1784 }
1785
1786 static inline int md_rename(struct obd_export *exp, struct md_op_data *op_data,
1787                             const char *old, int oldlen, const char *new,
1788                             int newlen, struct ptlrpc_request **request)
1789 {
1790         int rc;
1791         ENTRY;
1792         EXP_CHECK_MD_OP(exp, rename);
1793         EXP_MD_COUNTER_INCREMENT(exp, rename);
1794         rc = MDP(exp->exp_obd, rename)(exp, op_data, old, oldlen, new,
1795                                        newlen, request);
1796         RETURN(rc);
1797 }
1798
1799 static inline int md_is_subdir(struct obd_export *exp,
1800                                const struct lu_fid *pfid,
1801                                const struct lu_fid *cfid,
1802                                struct ptlrpc_request **request)
1803 {
1804         int rc;
1805         ENTRY;
1806         EXP_CHECK_MD_OP(exp, is_subdir);
1807         EXP_MD_COUNTER_INCREMENT(exp, is_subdir);
1808         rc = MDP(exp->exp_obd, is_subdir)(exp, pfid, cfid, request);
1809         RETURN(rc);
1810 }
1811
1812 static inline int md_setattr(struct obd_export *exp, struct md_op_data *op_data,
1813                              void *ea, int ealen, void *ea2, int ea2len,
1814                              struct ptlrpc_request **request,
1815                              struct md_open_data **mod)
1816 {
1817         int rc;
1818         ENTRY;
1819         EXP_CHECK_MD_OP(exp, setattr);
1820         EXP_MD_COUNTER_INCREMENT(exp, setattr);
1821         rc = MDP(exp->exp_obd, setattr)(exp, op_data, ea, ealen,
1822                                         ea2, ea2len, request, mod);
1823         RETURN(rc);
1824 }
1825
1826 static inline int md_sync(struct obd_export *exp, const struct lu_fid *fid,
1827                           struct obd_capa *oc, struct ptlrpc_request **request)
1828 {
1829         int rc;
1830         ENTRY;
1831         EXP_CHECK_MD_OP(exp, sync);
1832         EXP_MD_COUNTER_INCREMENT(exp, sync);
1833         rc = MDP(exp->exp_obd, sync)(exp, fid, oc, request);
1834         RETURN(rc);
1835 }
1836
1837 static inline int md_readpage(struct obd_export *exp, const struct lu_fid *fid,
1838                               struct obd_capa *oc, __u64 offset,
1839                               struct page *page,
1840                               struct ptlrpc_request **request)
1841 {
1842         int rc;
1843         ENTRY;
1844         EXP_CHECK_MD_OP(exp, readpage);
1845         EXP_MD_COUNTER_INCREMENT(exp, readpage);
1846         rc = MDP(exp->exp_obd, readpage)(exp, fid, oc, offset, page, request);
1847         RETURN(rc);
1848 }
1849
1850 static inline int md_unlink(struct obd_export *exp, struct md_op_data *op_data,
1851                             struct ptlrpc_request **request)
1852 {
1853         int rc;
1854         ENTRY;
1855         EXP_CHECK_MD_OP(exp, unlink);
1856         EXP_MD_COUNTER_INCREMENT(exp, unlink);
1857         rc = MDP(exp->exp_obd, unlink)(exp, op_data, request);
1858         RETURN(rc);
1859 }
1860
1861 static inline int md_get_lustre_md(struct obd_export *exp,
1862                                    struct ptlrpc_request *req,
1863                                    struct obd_export *dt_exp,
1864                                    struct obd_export *md_exp,
1865                                    struct lustre_md *md)
1866 {
1867         ENTRY;
1868         EXP_CHECK_MD_OP(exp, get_lustre_md);
1869         EXP_MD_COUNTER_INCREMENT(exp, get_lustre_md);
1870         RETURN(MDP(exp->exp_obd, get_lustre_md)(exp, req, dt_exp, md_exp, md));
1871 }
1872
1873 static inline int md_free_lustre_md(struct obd_export *exp,
1874                                     struct lustre_md *md)
1875 {
1876         ENTRY;
1877         EXP_CHECK_MD_OP(exp, free_lustre_md);
1878         EXP_MD_COUNTER_INCREMENT(exp, free_lustre_md);
1879         RETURN(MDP(exp->exp_obd, free_lustre_md)(exp, md));
1880 }
1881
1882 static inline int md_setxattr(struct obd_export *exp,
1883                               const struct lu_fid *fid, struct obd_capa *oc,
1884                               obd_valid valid, const char *name,
1885                               const char *input, int input_size,
1886                               int output_size, int flags, __u32 suppgid,
1887                               struct ptlrpc_request **request)
1888 {
1889         ENTRY;
1890         EXP_CHECK_MD_OP(exp, setxattr);
1891         EXP_MD_COUNTER_INCREMENT(exp, setxattr);
1892         RETURN(MDP(exp->exp_obd, setxattr)(exp, fid, oc, valid, name, input,
1893                                            input_size, output_size, flags,
1894                                            suppgid, request));
1895 }
1896
1897 static inline int md_getxattr(struct obd_export *exp,
1898                               const struct lu_fid *fid, struct obd_capa *oc,
1899                               obd_valid valid, const char *name,
1900                               const char *input, int input_size,
1901                               int output_size, int flags,
1902                               struct ptlrpc_request **request)
1903 {
1904         ENTRY;
1905         EXP_CHECK_MD_OP(exp, getxattr);
1906         EXP_MD_COUNTER_INCREMENT(exp, getxattr);
1907         RETURN(MDP(exp->exp_obd, getxattr)(exp, fid, oc, valid, name, input,
1908                                            input_size, output_size, flags,
1909                                            request));
1910 }
1911
1912 static inline int md_set_open_replay_data(struct obd_export *exp,
1913                                           struct obd_client_handle *och,
1914                                           struct ptlrpc_request *open_req)
1915 {
1916         ENTRY;
1917         EXP_CHECK_MD_OP(exp, set_open_replay_data);
1918         EXP_MD_COUNTER_INCREMENT(exp, set_open_replay_data);
1919         RETURN(MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req));
1920 }
1921
1922 static inline int md_clear_open_replay_data(struct obd_export *exp,
1923                                             struct obd_client_handle *och)
1924 {
1925         ENTRY;
1926         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
1927         EXP_MD_COUNTER_INCREMENT(exp, clear_open_replay_data);
1928         RETURN(MDP(exp->exp_obd, clear_open_replay_data)(exp, och));
1929 }
1930
1931 static inline int md_set_lock_data(struct obd_export *exp,
1932                                    __u64 *lockh, void *data)
1933 {
1934         ENTRY;
1935         EXP_CHECK_MD_OP(exp, set_lock_data);
1936         EXP_MD_COUNTER_INCREMENT(exp, set_lock_data);
1937         RETURN(MDP(exp->exp_obd, set_lock_data)(exp, lockh, data));
1938 }
1939
1940 static inline int md_cancel_unused(struct obd_export *exp,
1941                                    const struct lu_fid *fid,
1942                                    ldlm_policy_data_t *policy,
1943                                    ldlm_mode_t mode, int flags, void *opaque)
1944 {
1945         int rc;
1946         ENTRY;
1947
1948         EXP_CHECK_MD_OP(exp, cancel_unused);
1949         EXP_MD_COUNTER_INCREMENT(exp, cancel_unused);
1950
1951         rc = MDP(exp->exp_obd, cancel_unused)(exp, fid, policy, mode,
1952                                               flags, opaque);
1953         RETURN(rc);
1954 }
1955
1956 static inline ldlm_mode_t md_lock_match(struct obd_export *exp, int flags,
1957                                         const struct lu_fid *fid,
1958                                         ldlm_type_t type,
1959                                         ldlm_policy_data_t *policy,
1960                                         ldlm_mode_t mode,
1961                                         struct lustre_handle *lockh)
1962 {
1963         ENTRY;
1964         EXP_CHECK_MD_OP(exp, lock_match);
1965         EXP_MD_COUNTER_INCREMENT(exp, lock_match);
1966         RETURN(MDP(exp->exp_obd, lock_match)(exp, flags, fid, type,
1967                                              policy, mode, lockh));
1968 }
1969
1970 static inline int md_init_ea_size(struct obd_export *exp, int easize,
1971                                   int def_asize, int cookiesize)
1972 {
1973         ENTRY;
1974         EXP_CHECK_MD_OP(exp, init_ea_size);
1975         EXP_MD_COUNTER_INCREMENT(exp, init_ea_size);
1976         RETURN(MDP(exp->exp_obd, init_ea_size)(exp, easize, def_asize,
1977                                                cookiesize));
1978 }
1979
1980 static inline int md_get_remote_perm(struct obd_export *exp,
1981                                      const struct lu_fid *fid,
1982                                      struct obd_capa *oc, __u32 suppgid,
1983                                      struct ptlrpc_request **request)
1984 {
1985         ENTRY;
1986         EXP_CHECK_MD_OP(exp, get_remote_perm);
1987         EXP_MD_COUNTER_INCREMENT(exp, get_remote_perm);
1988         RETURN(MDP(exp->exp_obd, get_remote_perm)(exp, fid, oc, suppgid,
1989                                                   request));
1990 }
1991
1992 static inline int md_renew_capa(struct obd_export *exp, struct obd_capa *ocapa,
1993                                 renew_capa_cb_t cb)
1994 {
1995         int rc;
1996         ENTRY;
1997         EXP_CHECK_MD_OP(exp, renew_capa);
1998         EXP_MD_COUNTER_INCREMENT(exp, renew_capa);
1999         rc = MDP(exp->exp_obd, renew_capa)(exp, ocapa, cb);
2000         RETURN(rc);
2001 }
2002
2003 /* OBD Metadata Support */
2004
2005 extern int obd_init_caches(void);
2006 extern void obd_cleanup_caches(void);
2007
2008 /* support routines */
2009 extern cfs_mem_cache_t *obdo_cachep;
2010
2011 #define OBDO_ALLOC(ptr)                                                       \
2012 do {                                                                          \
2013         OBD_SLAB_ALLOC_PTR((ptr), obdo_cachep);                               \
2014 } while(0)
2015
2016 #define OBDO_FREE(ptr)                                                        \
2017 do {                                                                          \
2018         OBD_SLAB_FREE_PTR((ptr), obdo_cachep);                                \
2019 } while(0)
2020
2021
2022 static inline void obdo2fid(struct obdo *oa, struct lu_fid *fid)
2023 {
2024         /* something here */
2025 }
2026
2027 static inline void fid2obdo(struct lu_fid *fid, struct obdo *oa)
2028 {
2029         /* something here */
2030 }
2031
2032 /* I'm as embarrassed about this as you are.
2033  *
2034  * <shaver> // XXX do not look into _superhack with remaining eye
2035  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
2036 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
2037
2038 /* sysctl.c */
2039 extern void obd_sysctl_init (void);
2040 extern void obd_sysctl_clean (void);
2041
2042 /* uuid.c  */
2043 typedef __u8 class_uuid_t[16];
2044 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
2045
2046 /* lustre_peer.c    */
2047 int lustre_uuid_to_peer(const char *uuid, lnet_nid_t *peer_nid, int index);
2048 int class_add_uuid(const char *uuid, __u64 nid);
2049 int class_del_uuid (const char *uuid);
2050 void class_init_uuidlist(void);
2051 void class_exit_uuidlist(void);
2052
2053 /* mea.c */
2054 int mea_name2idx(struct lmv_stripe_md *mea, const char *name, int namelen);
2055 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
2056
2057 /* prng.c */
2058 void ll_generate_random_uuid(class_uuid_t uuid_out);
2059
2060 #endif /* __LINUX_OBD_CLASS_H */