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 #include <obd_support.h>
  27 #include <lustre_import.h>
  28 #include <lustre_net.h>
  29 #include <obd.h>
  30 #include <lustre_lib.h>
  31 #include <lustre/lustre_idl.h>
  32 #include <lprocfs_status.h>
  33
  34 #if defined(__linux__)
  35 #include <linux/obd_class.h>
  36 #elif defined(__APPLE__)
  37 #include <darwin/obd_class.h>
  38 #elif defined(__WINNT__)
  39 #include <winnt/obd_class.h>
  40 #else
  41 #error Unsupported operating system.
  42 #endif
  43
  44 /* OBD Device Declarations */
  45 extern struct obd_device *obd_devs[MAX_OBD_DEVICES];
  46 extern spinlock_t obd_dev_lock;
  47
  48 /* OBD Operations Declarations */
  49 extern struct obd_device *class_conn2obd(struct lustre_handle *);
  50 extern struct obd_device *class_exp2obd(struct obd_export *);
  51
  52 struct lu_device_type;
  53
  54 /* genops.c */
  55 struct obd_export *class_conn2export(struct lustre_handle *);
  56 int class_register_type(struct obd_ops *, struct md_ops *,
  57                         struct lprocfs_vars *, const char *nm,
  58                         struct lu_device_type *ldt);
  59 int class_unregister_type(const char *nm);
  60
  61 struct obd_device *class_newdev(const char *type_name, const char *name);
  62 void class_release_dev(struct obd_device *obd);
  63
  64 int class_name2dev(const char *name);
  65 struct obd_device *class_name2obd(const char *name);
  66 int class_uuid2dev(struct obd_uuid *uuid);
  67 struct obd_device *class_uuid2obd(struct obd_uuid *uuid);
  68 void class_obd_list(void);
  69 struct obd_device * class_find_client_obd(struct obd_uuid *tgt_uuid,
  70                                           const char * typ_name,
  71                                           struct obd_uuid *grp_uuid);
  72 struct obd_device * class_find_client_notype(struct obd_uuid *tgt_uuid,
  73                                              struct obd_uuid *grp_uuid);
  74 struct obd_device * class_devices_in_group(struct obd_uuid *grp_uuid,
  75                                            int *next);
  76 struct obd_device * class_num2obd(int num);
  77
  78 int oig_init(struct obd_io_group **oig);
  79 int oig_add_one(struct obd_io_group *oig, struct oig_callback_context *occ);
  80 void oig_complete_one(struct obd_io_group *oig,
  81                       struct oig_callback_context *occ, int rc);
  82 void oig_release(struct obd_io_group *oig);
  83 int oig_wait(struct obd_io_group *oig);
  84
  85 char *obd_export_nid2str(struct obd_export *exp);
  86
  87 int obd_export_evict_by_nid(struct obd_device *obd, const char *nid);
  88 int obd_export_evict_by_uuid(struct obd_device *obd, const char *uuid);
  89
  90 /* obd_config.c */
  91 int class_process_config(struct lustre_cfg *lcfg);
  92 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
  93                              struct lustre_cfg *lcfg, void *data);
  94 int class_attach(struct lustre_cfg *lcfg);
  95 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
  96 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg);
  97 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg);
  98 struct obd_device *class_incref(struct obd_device *obd);
  99 void class_decref(struct obd_device *obd);
 100
 101 #define CFG_F_START     0x01   /* Set when we start updating from a log */
 102 #define CFG_F_MARKER    0x02   /* We are within a maker */
 103 #define CFG_F_SKIP      0x04   /* We should ignore this cfg command */
 104 #define CFG_F_COMPAT146 0x08   /* Using old-style log */
 105 #define CFG_F_EXCLUDE   0x10   /* OST exclusion list */
 106
 107 /* Passed as data param to class_config_parse_llog */
 108 struct config_llog_instance {
 109         char *              cfg_instance;
 110         struct super_block *cfg_sb;
 111         struct obd_uuid     cfg_uuid;
 112         int                 cfg_last_idx; /* for partial llog processing */
 113         int                 cfg_flags;
 114 };
 115 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
 116                             struct config_llog_instance *cfg);
 117 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
 118                            struct config_llog_instance *cfg);
 119
 120 /* list of active configuration logs  */
 121 struct config_llog_data {
 122         char               *cld_logname;
 123         struct ldlm_res_id  cld_resid;
 124         struct config_llog_instance cld_cfg;
 125         struct list_head    cld_list_chain;
 126         atomic_t            cld_refcount;
 127         struct obd_export  *cld_mgcexp;
 128         unsigned int        cld_stopping:1;
 129 };
 130
 131 struct lustre_profile {
 132         struct list_head lp_list;
 133         char            *lp_profile;
 134         char            *lp_dt;
 135         char            *lp_md;
 136 };
 137
 138 struct lustre_profile *class_get_profile(const char * prof);
 139 void class_del_profile(const char *prof);
 140 void class_del_profiles(void);
 141
 142 /* genops.c */
 143 #define class_export_get(exp)                                                  \
 144 ({                                                                             \
 145         struct obd_export *exp_ = exp;                                         \
 146         atomic_inc(&exp_->exp_refcount);                                       \
 147         CDEBUG(D_INFO, "GETting export %p : new refcount %d\n", exp_,          \
 148                atomic_read(&exp_->exp_refcount));                              \
 149         exp_;                                                                  \
 150 })
 151
 152 #define class_export_put(exp)                                                  \
 153 do {                                                                           \
 154         LASSERT((exp) != NULL);                                                \
 155         CDEBUG(D_INFO, "PUTting export %p : new refcount %d\n", (exp),         \
 156                atomic_read(&(exp)->exp_refcount) - 1);                         \
 157         LASSERT(atomic_read(&(exp)->exp_refcount) > 0);                        \
 158         LASSERT(atomic_read(&(exp)->exp_refcount) < 0x5a5a5a);                 \
 159         __class_export_put(exp);                                               \
 160 } while (0)
 161 void __class_export_put(struct obd_export *);
 162 struct obd_export *class_new_export(struct obd_device *obddev,
 163                                     struct obd_uuid *cluuid);
 164 void class_unlink_export(struct obd_export *exp);
 165
 166 struct obd_import *class_import_get(struct obd_import *);
 167 void class_import_put(struct obd_import *);
 168 struct obd_import *class_new_import(struct obd_device *obd);
 169 void class_destroy_import(struct obd_import *exp);
 170
 171 struct obd_type *class_search_type(const char *name);
 172 struct obd_type *class_get_type(const char *name);
 173 void class_put_type(struct obd_type *type);
 174 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 175                   struct obd_uuid *cluuid);
 176 int class_disconnect(struct obd_export *exp);
 177 void class_fail_export(struct obd_export *exp);
 178 void class_disconnect_exports(struct obd_device *obddev);
 179 void class_disconnect_stale_exports(struct obd_device *obddev);
 180 int class_manual_cleanup(struct obd_device *obd);
 181
 182 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_flag valid);
 183 int obdo_cmp_md(struct obdo *dst, struct obdo *src, obd_flag compare);
 184 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
 185 void obdo_from_iattr(struct obdo *oa, struct iattr *attr,
 186                      unsigned int ia_valid);
 187 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, obd_flag valid);
 188 void md_from_obdo(struct md_op_data *op_data, struct obdo *oa, obd_flag valid);
 189 void obdo_from_md(struct obdo *oa, struct md_op_data *op_data,
 190                   unsigned int valid);
 191
 192 #define OBT(dev)        (dev)->obd_type
 193 #define OBP(dev, op)    (dev)->obd_type->typ_dt_ops->o_ ## op
 194 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
 195 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 196
 197 /* Ensure obd_setup: used for cleanup which must be called
 198    while obd is stopping */
 199 #define OBD_CHECK_DEV(obd)                                      \
 200 do {                                                            \
 201         if (!(obd)) {                                           \
 202                 CERROR("NULL device\n");                        \
 203                 RETURN(-ENODEV);                                \
 204         }                                                       \
 205 } while (0)
 206
 207 /* ensure obd_setup and !obd_stopping */
 208 #define OBD_CHECK_DEV_ACTIVE(obd)                               \
 209 do {                                                            \
 210         OBD_CHECK_DEV(obd);                                     \
 211         if (!(obd)->obd_set_up || (obd)->obd_stopping) {        \
 212                 CERROR("Device %d not setup\n",                 \
 213                        (obd)->obd_minor);                       \
 214                 RETURN(-ENODEV);                                \
 215         }                                                       \
 216 } while (0)
 217
 218
 219 #ifdef LPROCFS
 220 #define OBD_COUNTER_OFFSET(op)                                  \
 221         ((offsetof(struct obd_ops, o_ ## op) -                  \
 222           offsetof(struct obd_ops, o_iocontrol))                \
 223          / sizeof(((struct obd_ops *)(0))->o_iocontrol))
 224
 225 #define OBD_COUNTER_INCREMENT(obd, op)                          \
 226         if ((obd)->obd_stats != NULL) {                         \
 227                 unsigned int coffset;                           \
 228                 coffset = (unsigned int)(obd)->obd_cntr_base +  \
 229                         OBD_COUNTER_OFFSET(op);                 \
 230                 LASSERT(coffset < obd->obd_stats->ls_num);      \
 231                 lprocfs_counter_incr(obd->obd_stats, coffset);  \
 232         }
 233
 234 #define MD_COUNTER_OFFSET(op)                                  \
 235         ((offsetof(struct md_ops, m_ ## op) -                  \
 236           offsetof(struct md_ops, m_getstatus))                \
 237          / sizeof(((struct md_ops *)(0))->m_getstatus))
 238
 239 #define MD_COUNTER_INCREMENT(obd, op)                           \
 240         if ((obd)->md_stats != NULL) {                          \
 241                 unsigned int coffset;                           \
 242                 coffset = (unsigned int)(obd)->md_cntr_base +   \
 243                         MD_COUNTER_OFFSET(op);                  \
 244                 LASSERT(coffset < (obd)->md_stats->ls_num);     \
 245                 lprocfs_counter_incr((obd)->md_stats, coffset); \
 246         }
 247
 248 #else
 249 #define OBD_COUNTER_OFFSET(op)
 250 #define OBD_COUNTER_INCREMENT(obd, op)
 251 #define MD_COUNTER_INCREMENT(obd, op)
 252 #endif
 253
 254 #define OBD_CHECK_MD_OP(obd, op, err)                           \
 255 do {                                                            \
 256         if (!OBT(obd) || !MDP((obd), op)) {                     \
 257                 if (err)                                        \
 258                         CERROR("md_" #op ": dev %s/%d no operation\n", \
 259                                obd->obd_name, obd->obd_minor);  \
 260                 RETURN(err);                                    \
 261         }                                                       \
 262 } while (0)
 263
 264 #define EXP_CHECK_MD_OP(exp, op)                                \
 265 do {                                                            \
 266         if ((exp) == NULL) {                                    \
 267                 CERROR("obd_" #op ": NULL export\n");           \
 268                 RETURN(-ENODEV);                                \
 269         }                                                       \
 270         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 271                 CERROR("obd_" #op ": cleaned up obd\n");        \
 272                 RETURN(-EOPNOTSUPP);                            \
 273         }                                                       \
 274         if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
 275                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 276                        (exp)->exp_obd->obd_name,                \
 277                        (exp)->exp_obd->obd_minor);              \
 278                 RETURN(-EOPNOTSUPP);                            \
 279         }                                                       \
 280 } while (0)
 281
 282
 283 #define OBD_CHECK_DT_OP(obd, op, err)                           \
 284 do {                                                            \
 285         if (!OBT(obd) || !OBP((obd), op)) {                     \
 286                 if (err)                                        \
 287                         CERROR("obd_" #op ": dev %d no operation\n",    \
 288                                obd->obd_minor);                 \
 289                 RETURN(err);                                    \
 290         }                                                       \
 291 } while (0)
 292
 293 #define EXP_CHECK_DT_OP(exp, op)                                \
 294 do {                                                            \
 295         if ((exp) == NULL) {                                    \
 296                 CERROR("obd_" #op ": NULL export\n");           \
 297                 RETURN(-ENODEV);                                \
 298         }                                                       \
 299         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 300                 CERROR("obd_" #op ": cleaned up obd\n");        \
 301                 RETURN(-EOPNOTSUPP);                            \
 302         }                                                       \
 303         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 304                 CERROR("obd_" #op ": dev %d no operation\n",    \
 305                        (exp)->exp_obd->obd_minor);              \
 306                 RETURN(-EOPNOTSUPP);                            \
 307         }                                                       \
 308 } while (0)
 309
 310 #define CTXT_CHECK_OP(ctxt, op, err)                                         \
 311 do {                                                            \
 312         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {                     \
 313                 if (err)                                        \
 314                         CERROR("lop_" #op ": dev %d no operation\n",    \
 315                                ctxt->loc_obd->obd_minor);                         \
 316                 RETURN(err);                                    \
 317         }                                                       \
 318 } while (0)
 319
 320 static inline int class_devno_max(void)
 321 {
 322         return MAX_OBD_DEVICES;
 323 }
 324
 325 static inline int obd_get_info(struct obd_export *exp, __u32 keylen,
 326                                void *key, __u32 *vallen, void *val)
 327 {
 328         int rc;
 329         ENTRY;
 330
 331         EXP_CHECK_DT_OP(exp, get_info);
 332         OBD_COUNTER_INCREMENT(exp->exp_obd, get_info);
 333
 334         rc = OBP(exp->exp_obd, get_info)(exp, keylen, key, vallen, val);
 335         RETURN(rc);
 336 }
 337
 338 static inline int obd_set_info_async(struct obd_export *exp, obd_count keylen,
 339                                      void *key, obd_count vallen, void *val,
 340                                      struct ptlrpc_request_set *set)
 341 {
 342         int rc;
 343         ENTRY;
 344
 345         EXP_CHECK_DT_OP(exp, set_info_async);
 346         OBD_COUNTER_INCREMENT(exp->exp_obd, set_info_async);
 347
 348         rc = OBP(exp->exp_obd, set_info_async)(exp, keylen, key, vallen, val,
 349                                                set);
 350         RETURN(rc);
 351 }
 352
 353 #ifdef __KERNEL__
 354 #define DECLARE_LU_VARS(ldt, d)                 \
 355         struct lu_device_type *ldt;             \
 356         struct lu_device *d
 357 #else
 358 #define DECLARE_LU_VARS(ldt, d)                                 \
 359         extern void __placeholder_to_put_a_semicolon(void)
 360 #endif
 361 static inline int obd_setup(struct obd_device *obd, struct lustre_cfg *cfg)
 362 {
 363         int rc;
 364         DECLARE_LU_VARS(ldt, d);
 365         ENTRY;
 366
 367 #ifdef __KERNEL__
 368         ldt = obd->obd_type->typ_lu;
 369         if (ldt != NULL) {
 370                 struct lu_context ctx;
 371
 372                 rc = lu_context_init(&ctx, ldt->ldt_ctx_tags);
 373                 if (rc == 0) {
 374                         lu_context_enter(&ctx);
 375                         d = ldt->ldt_ops->ldto_device_alloc(&ctx, ldt, cfg);
 376                         lu_context_exit(&ctx);
 377                         lu_context_fini(&ctx);
 378                         if (!IS_ERR(d)) {
 379                                 obd->obd_lu_dev = d;
 380                                 d->ld_obd = obd;
 381                                 rc = 0;
 382                         } else
 383                                 rc = PTR_ERR(d);
 384                 }
 385         } else
 386 #endif
 387         {
 388                 OBD_CHECK_DT_OP(obd, setup, -EOPNOTSUPP);
 389                 OBD_COUNTER_INCREMENT(obd, setup);
 390                 rc = OBP(obd, setup)(obd, cfg);
 391         }
 392         RETURN(rc);
 393 }
 394
 395 static inline int obd_precleanup(struct obd_device *obd,
 396                                  enum obd_cleanup_stage cleanup_stage)
 397 {
 398         int rc;
 399         DECLARE_LU_VARS(ldt, d);
 400         ENTRY;
 401
 402         OBD_CHECK_DEV(obd);
 403 #ifdef __KERNEL__
 404         ldt = obd->obd_type->typ_lu;
 405         d = obd->obd_lu_dev;
 406         if (ldt != NULL) {
 407                 LASSERT(d != NULL);
 408                 if (cleanup_stage == OBD_CLEANUP_EXPORTS) {
 409                         struct lu_context ctx;
 410
 411                         rc = lu_context_init(&ctx, ldt->ldt_ctx_tags);
 412                         if (rc == 0) {
 413                                 lu_context_enter(&ctx);
 414                                 ldt->ldt_ops->ldto_device_fini(&ctx, d);
 415                                 lu_context_exit(&ctx);
 416                                 lu_context_fini(&ctx);
 417                         }
 418                 } else {
 419                         rc = 0;
 420                 }
 421         } else
 422 #endif
 423         {
 424                 OBD_CHECK_DT_OP(obd, precleanup, 0);
 425                 rc = OBP(obd, precleanup)(obd, cleanup_stage);
 426         }
 427
 428         OBD_COUNTER_INCREMENT(obd, precleanup);
 429         RETURN(rc);
 430 }
 431
 432 static inline int obd_cleanup(struct obd_device *obd)
 433 {
 434         int rc;
 435         DECLARE_LU_VARS(ldt, d);
 436         ENTRY;
 437
 438         OBD_CHECK_DEV(obd);
 439
 440 #ifdef __KERNEL__
 441         ldt = obd->obd_type->typ_lu;
 442         d = obd->obd_lu_dev;
 443         if (ldt != NULL) {
 444                 struct lu_context ctx;
 445                 LASSERT(d != NULL);
 446
 447                 rc = lu_context_init(&ctx, ldt->ldt_ctx_tags);
 448                 if (rc == 0) {
 449                         lu_context_enter(&ctx);
 450                         ldt->ldt_ops->ldto_device_free(&ctx, d);
 451                         lu_context_exit(&ctx);
 452                         lu_context_fini(&ctx);
 453                         obd->obd_lu_dev = NULL;
 454                 }
 455         } else
 456 #endif
 457         {
 458                 OBD_CHECK_DT_OP(obd, cleanup, 0);
 459                 rc = OBP(obd, cleanup)(obd);
 460         }
 461         OBD_COUNTER_INCREMENT(obd, cleanup);
 462         RETURN(rc);
 463 }
 464
 465 static inline int
 466 obd_process_config(struct obd_device *obd, int datalen, void *data)
 467 {
 468         int rc;
 469         DECLARE_LU_VARS(ldt, d);
 470         ENTRY;
 471
 472         OBD_CHECK_DEV(obd);
 473
 474 #ifdef __KERNEL__
 475         ldt = obd->obd_type->typ_lu;
 476         d = obd->obd_lu_dev;
 477         if (ldt != NULL && d != NULL) {
 478                 struct lu_context ctx;
 479
 480                 rc = lu_context_init(&ctx, ldt->ldt_ctx_tags);
 481                 if (rc == 0) {
 482                         lu_context_enter(&ctx);
 483                         rc = d->ld_ops->ldo_process_config(&ctx, d, data);
 484                         lu_context_exit(&ctx);
 485                         lu_context_fini(&ctx);
 486                 }
 487         } else
 488 #endif
 489         {
 490                 OBD_CHECK_DT_OP(obd, process_config, -EOPNOTSUPP);
 491                 rc = OBP(obd, process_config)(obd, datalen, data);
 492         }
 493         OBD_COUNTER_INCREMENT(obd, process_config);
 494
 495         RETURN(rc);
 496 }
 497
 498 /* Pack an in-memory MD struct for storage on disk.
 499  * Returns +ve size of packed MD (0 for free), or -ve error.
 500  *
 501  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 502  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 503  * If @*disk_tgt == NULL, it will be allocated
 504  */
 505 static inline int obd_packmd(struct obd_export *exp,
 506                              struct lov_mds_md **disk_tgt,
 507                              struct lov_stripe_md *mem_src)
 508 {
 509         int rc;
 510         ENTRY;
 511
 512         EXP_CHECK_DT_OP(exp, packmd);
 513         OBD_COUNTER_INCREMENT(exp->exp_obd, packmd);
 514
 515         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 516         RETURN(rc);
 517 }
 518
 519 static inline int obd_size_diskmd(struct obd_export *exp,
 520                                   struct lov_stripe_md *mem_src)
 521 {
 522         return obd_packmd(exp, NULL, mem_src);
 523 }
 524
 525 /* helper functions */
 526 static inline int obd_alloc_diskmd(struct obd_export *exp,
 527                                    struct lov_mds_md **disk_tgt)
 528 {
 529         LASSERT(disk_tgt);
 530         LASSERT(*disk_tgt == NULL);
 531         return obd_packmd(exp, disk_tgt, NULL);
 532 }
 533
 534 static inline int obd_free_diskmd(struct obd_export *exp,
 535                                   struct lov_mds_md **disk_tgt)
 536 {
 537         LASSERT(disk_tgt);
 538         LASSERT(*disk_tgt);
 539         return obd_packmd(exp, disk_tgt, NULL);
 540 }
 541
 542 /* Unpack an MD struct from disk to in-memory format.
 543  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 544  *
 545  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 546  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 547  * If @*mem_tgt == NULL, it will be allocated
 548  */
 549 static inline int obd_unpackmd(struct obd_export *exp,
 550                                struct lov_stripe_md **mem_tgt,
 551                                struct lov_mds_md *disk_src,
 552                                int disk_len)
 553 {
 554         int rc;
 555         ENTRY;
 556
 557         EXP_CHECK_DT_OP(exp, unpackmd);
 558         OBD_COUNTER_INCREMENT(exp->exp_obd, unpackmd);
 559
 560         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 561         RETURN(rc);
 562 }
 563
 564 /* helper functions */
 565 static inline int obd_alloc_memmd(struct obd_export *exp,
 566                                   struct lov_stripe_md **mem_tgt)
 567 {
 568         LASSERT(mem_tgt);
 569         LASSERT(*mem_tgt == NULL);
 570         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 571 }
 572
 573 static inline int obd_free_memmd(struct obd_export *exp,
 574                                  struct lov_stripe_md **mem_tgt)
 575 {
 576         LASSERT(mem_tgt);
 577         LASSERT(*mem_tgt);
 578         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 579 }
 580
 581 static inline int obd_checkmd(struct obd_export *exp,
 582                               struct obd_export *md_exp,
 583                               struct lov_stripe_md *mem_tgt)
 584 {
 585         int rc;
 586         ENTRY;
 587
 588         EXP_CHECK_DT_OP(exp, checkmd);
 589         OBD_COUNTER_INCREMENT(exp->exp_obd, checkmd);
 590
 591         rc = OBP(exp->exp_obd, checkmd)(exp, md_exp, mem_tgt);
 592         RETURN(rc);
 593 }
 594
 595 static inline int obd_create(struct obd_export *exp, struct obdo *obdo,
 596                              struct lov_stripe_md **ea,
 597                              struct obd_trans_info *oti)
 598 {
 599         int rc;
 600         ENTRY;
 601
 602         EXP_CHECK_DT_OP(exp, create);
 603         OBD_COUNTER_INCREMENT(exp->exp_obd, create);
 604
 605         rc = OBP(exp->exp_obd, create)(exp, obdo, ea, oti);
 606         RETURN(rc);
 607 }
 608
 609 static inline int obd_destroy(struct obd_export *exp, struct obdo *obdo,
 610                               struct lov_stripe_md *ea,
 611                               struct obd_trans_info *oti,
 612                               struct obd_export *md_exp, void *capa)
 613 {
 614         int rc;
 615         ENTRY;
 616
 617         EXP_CHECK_DT_OP(exp, destroy);
 618         OBD_COUNTER_INCREMENT(exp->exp_obd, destroy);
 619
 620         rc = OBP(exp->exp_obd, destroy)(exp, obdo, ea, oti, md_exp, capa);
 621         RETURN(rc);
 622 }
 623
 624 static inline int obd_getattr(struct obd_export *exp, struct obd_info *oinfo)
 625 {
 626         int rc;
 627         ENTRY;
 628
 629         EXP_CHECK_DT_OP(exp, getattr);
 630         OBD_COUNTER_INCREMENT(exp->exp_obd, getattr);
 631
 632         rc = OBP(exp->exp_obd, getattr)(exp, oinfo);
 633         RETURN(rc);
 634 }
 635
 636 static inline int obd_getattr_async(struct obd_export *exp,
 637                                     struct obd_info *oinfo,
 638                                     struct ptlrpc_request_set *set)
 639 {
 640         int rc;
 641         ENTRY;
 642
 643         EXP_CHECK_DT_OP(exp, getattr_async);
 644         OBD_COUNTER_INCREMENT(exp->exp_obd, getattr_async);
 645
 646         rc = OBP(exp->exp_obd, getattr_async)(exp, oinfo, set);
 647         RETURN(rc);
 648 }
 649
 650 static inline int obd_setattr(struct obd_export *exp, struct obd_info *oinfo,
 651                               struct obd_trans_info *oti)
 652 {
 653         int rc;
 654         ENTRY;
 655
 656         EXP_CHECK_DT_OP(exp, setattr);
 657         OBD_COUNTER_INCREMENT(exp->exp_obd, setattr);
 658
 659         rc = OBP(exp->exp_obd, setattr)(exp, oinfo, oti);
 660         RETURN(rc);
 661 }
 662
 663 /* This performs all the requests set init/wait/destroy actions. */
 664 static inline int obd_setattr_rqset(struct obd_export *exp,
 665                                     struct obd_info *oinfo,
 666                                     struct obd_trans_info *oti)
 667 {
 668         struct ptlrpc_request_set *set = NULL;
 669         int rc;
 670         ENTRY;
 671
 672         EXP_CHECK_DT_OP(exp, setattr_async);
 673         OBD_COUNTER_INCREMENT(exp->exp_obd, setattr_async);
 674
 675         set =  ptlrpc_prep_set();
 676         if (set == NULL)
 677                 RETURN(-ENOMEM);
 678
 679         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 680         if (rc == 0)
 681                 rc = ptlrpc_set_wait(set);
 682         ptlrpc_set_destroy(set);
 683         RETURN(rc);
 684 }
 685
 686 /* This adds all the requests into @set if @set != NULL, otherwise
 687    all requests are sent asynchronously without waiting for response. */
 688 static inline int obd_setattr_async(struct obd_export *exp,
 689                                     struct obd_info *oinfo,
 690                                     struct obd_trans_info *oti,
 691                                     struct ptlrpc_request_set *set)
 692 {
 693         int rc;
 694         ENTRY;
 695
 696         EXP_CHECK_DT_OP(exp, setattr_async);
 697         OBD_COUNTER_INCREMENT(exp->exp_obd, setattr_async);
 698
 699         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 700         RETURN(rc);
 701 }
 702
 703 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 704                                int priority)
 705 {
 706         struct obd_device *obd = imp->imp_obd;
 707         int rc;
 708         ENTRY;
 709
 710         OBD_CHECK_DEV_ACTIVE(obd);
 711         OBD_CHECK_DT_OP(obd, add_conn, -EOPNOTSUPP);
 712         OBD_COUNTER_INCREMENT(obd, add_conn);
 713
 714         rc = OBP(obd, add_conn)(imp, uuid, priority);
 715         RETURN(rc);
 716 }
 717
 718 static inline int obd_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
 719 {
 720         struct obd_device *obd = imp->imp_obd;
 721         int rc;
 722         ENTRY;
 723
 724         OBD_CHECK_DEV_ACTIVE(obd);
 725         OBD_CHECK_DT_OP(obd, del_conn, -EOPNOTSUPP);
 726         OBD_COUNTER_INCREMENT(obd, del_conn);
 727
 728         rc = OBP(obd, del_conn)(imp, uuid);
 729         RETURN(rc);
 730 }
 731
 732 static inline int obd_connect(const struct lu_context *ctx,
 733                               struct lustre_handle *conn,struct obd_device *obd,
 734                               struct obd_uuid *cluuid,
 735                               struct obd_connect_data *d)
 736 {
 737         int rc;
 738         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition check */
 739         ENTRY;
 740
 741         OBD_CHECK_DEV_ACTIVE(obd);
 742         OBD_CHECK_DT_OP(obd, connect, -EOPNOTSUPP);
 743         OBD_COUNTER_INCREMENT(obd, connect);
 744
 745         rc = OBP(obd, connect)(ctx, conn, obd, cluuid, d);
 746         /* check that only subset is granted */
 747         LASSERT(ergo(d != NULL,
 748                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 749         RETURN(rc);
 750 }
 751
 752 static inline int obd_reconnect(struct obd_export *exp,
 753                                 struct obd_device *obd,
 754                                 struct obd_uuid *cluuid,
 755                                 struct obd_connect_data *d)
 756 {
 757         int rc;
 758         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition check */
 759         ENTRY;
 760
 761         OBD_CHECK_DEV_ACTIVE(obd);
 762         OBD_CHECK_DT_OP(obd, reconnect, 0);
 763         OBD_COUNTER_INCREMENT(obd, reconnect);
 764
 765         rc = OBP(obd, reconnect)(exp, obd, cluuid, d);
 766         /* check that only subset is granted */
 767         LASSERT(ergo(d != NULL,
 768                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 769         RETURN(rc);
 770 }
 771
 772 static inline int obd_disconnect(struct obd_export *exp)
 773 {
 774         int rc;
 775         ENTRY;
 776
 777         EXP_CHECK_DT_OP(exp, disconnect);
 778         OBD_COUNTER_INCREMENT(exp->exp_obd, disconnect);
 779
 780         rc = OBP(exp->exp_obd, disconnect)(exp);
 781         RETURN(rc);
 782 }
 783
 784 static inline int obd_fid_init(struct obd_export *exp)
 785 {
 786         int rc;
 787         ENTRY;
 788
 789         if (OBP(exp->exp_obd, fid_init) == NULL)
 790                 RETURN(-ENOTSUPP);
 791
 792         OBD_COUNTER_INCREMENT(exp->exp_obd, fid_init);
 793
 794         rc = OBP(exp->exp_obd, fid_init)(exp);
 795         RETURN(rc);
 796 }
 797
 798 static inline int obd_fid_fini(struct obd_export *exp)
 799 {
 800         int rc;
 801         ENTRY;
 802
 803         if (OBP(exp->exp_obd, fid_fini) == NULL)
 804                 RETURN(-ENOTSUPP);
 805
 806         OBD_COUNTER_INCREMENT(exp->exp_obd, fid_fini);
 807
 808         rc = OBP(exp->exp_obd, fid_fini)(exp);
 809         RETURN(rc);
 810 }
 811
 812 static inline int obd_fid_alloc(struct obd_export *exp,
 813                                 struct lu_fid *fid,
 814                                 struct lu_placement_hint *hint)
 815 {
 816         int rc;
 817         ENTRY;
 818
 819         if (OBP(exp->exp_obd, fid_alloc) == NULL)
 820                 RETURN(-ENOTSUPP);
 821
 822         OBD_COUNTER_INCREMENT(exp->exp_obd, fid_alloc);
 823
 824         rc = OBP(exp->exp_obd, fid_alloc)(exp, fid, hint);
 825         RETURN(rc);
 826 }
 827
 828 static inline int obd_fid_delete(struct obd_export *exp,
 829                                  const struct lu_fid *fid)
 830 {
 831         int rc;
 832         ENTRY;
 833
 834         if (OBP(exp->exp_obd, fid_delete) == NULL)
 835                 RETURN(0);
 836
 837         OBD_COUNTER_INCREMENT(exp->exp_obd, fid_delete);
 838         rc = OBP(exp->exp_obd, fid_delete)(exp, fid);
 839         RETURN(rc);
 840 }
 841
 842 static inline int obd_ping(struct obd_export *exp)
 843 {
 844         int rc;
 845         ENTRY;
 846
 847         OBD_CHECK_DT_OP(exp->exp_obd, ping, 0);
 848         OBD_COUNTER_INCREMENT(exp->exp_obd, ping);
 849
 850         rc = OBP(exp->exp_obd, ping)(exp);
 851         RETURN(rc);
 852 }
 853
 854 static inline int obd_init_export(struct obd_export *exp)
 855 {
 856         int rc = 0;
 857
 858         ENTRY;
 859         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 860             OBP((exp)->exp_obd, init_export))
 861                 rc = OBP(exp->exp_obd, init_export)(exp);
 862         RETURN(rc);
 863 }
 864
 865 static inline int obd_destroy_export(struct obd_export *exp)
 866 {
 867         ENTRY;
 868         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 869             OBP((exp)->exp_obd, destroy_export))
 870                 OBP(exp->exp_obd, destroy_export)(exp);
 871         RETURN(0);
 872 }
 873
 874 static inline int obd_extent_calc(struct obd_export *exp,
 875                                   struct lov_stripe_md *md,
 876                                   int cmd, obd_off *offset)
 877 {
 878         int rc;
 879         ENTRY;
 880         EXP_CHECK_DT_OP(exp, extent_calc);
 881         rc = OBP(exp->exp_obd, extent_calc)(exp, md, cmd, offset);
 882         RETURN(rc);
 883 }
 884
 885 static inline struct dentry *
 886 obd_lvfs_fid2dentry(struct obd_export *exp, __u64 id_ino, __u32 gen, __u64 gr)
 887 {
 888         LASSERT(exp->exp_obd);
 889
 890         return lvfs_fid2dentry(&exp->exp_obd->obd_lvfs_ctxt, id_ino, gen, gr,
 891                                exp->exp_obd);
 892 }
 893
 894 static inline int
 895 obd_lvfs_open_llog(struct obd_export *exp, __u64 id_ino, struct dentry *dentry)
 896 {
 897         LASSERT(exp->exp_obd);
 898         CERROR("FIXME what's the story here?  This needs to be an obd fn?\n");
 899 #if 0
 900         return lvfs_open_llog(&exp->exp_obd->obd_lvfs_ctxt, id_ino,
 901                               dentry, exp->exp_obd);
 902 #endif
 903         return 0;
 904 }
 905
 906 #ifndef time_before
 907 #define time_before(t1, t2) ((long)t2 - (long)t1 > 0)
 908 #endif
 909
 910 /* @max_age is the oldest time in jiffies that we accept using a cached data.
 911  * If the cache is older than @max_age we will get a new value from the
 912  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
 913 static inline int obd_statfs_async(struct obd_device *obd,
 914                                    struct obd_info *oinfo,
 915                                    __u64 max_age,
 916                                    struct ptlrpc_request_set *rqset)
 917 {
 918         int rc = 0;
 919         ENTRY;
 920
 921         if (obd == NULL)
 922                 RETURN(-EINVAL);
 923
 924         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
 925         OBD_COUNTER_INCREMENT(obd, statfs);
 926
 927         CDEBUG(D_SUPER, "osfs "LPU64", max_age "LPU64"\n",
 928                obd->obd_osfs_age, max_age);
 929         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
 930                 rc = OBP(obd, statfs_async)(obd, oinfo, max_age, rqset);
 931         } else {
 932                 CDEBUG(D_SUPER, "using cached obd_statfs data\n");
 933                 spin_lock(&obd->obd_osfs_lock);
 934                 memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
 935                 spin_unlock(&obd->obd_osfs_lock);
 936                 if (oinfo->oi_cb_up)
 937                         oinfo->oi_cb_up(oinfo, 0);
 938         }
 939         RETURN(rc);
 940 }
 941
 942 static inline int obd_statfs_rqset(struct obd_device *obd,
 943                                    struct obd_statfs *osfs, __u64 max_age)
 944 {
 945         struct ptlrpc_request_set *set = NULL;
 946         struct obd_info oinfo = { { { 0 } } };
 947         int rc = 0;
 948         ENTRY;
 949
 950         set =  ptlrpc_prep_set();
 951         if (set == NULL)
 952                 RETURN(-ENOMEM);
 953
 954         oinfo.oi_osfs = osfs;
 955         rc = obd_statfs_async(obd, &oinfo, max_age, set);
 956         if (rc == 0)
 957                 rc = ptlrpc_set_wait(set);
 958         ptlrpc_set_destroy(set);
 959         RETURN(rc);
 960 }
 961
 962 /* @max_age is the oldest time in jiffies that we accept using a cached data.
 963  * If the cache is older than @max_age we will get a new value from the
 964  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
 965 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
 966                              __u64 max_age)
 967 {
 968         int rc = 0;
 969         ENTRY;
 970
 971         if (obd == NULL)
 972                 RETURN(-EINVAL);
 973
 974         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
 975         OBD_COUNTER_INCREMENT(obd, statfs);
 976
 977         CDEBUG(D_SUPER, "osfs "LPU64", max_age "LPU64"\n",
 978                obd->obd_osfs_age, max_age);
 979         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
 980                 rc = OBP(obd, statfs)(obd, osfs, max_age);
 981                 if (rc == 0) {
 982                         spin_lock(&obd->obd_osfs_lock);
 983                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
 984                         obd->obd_osfs_age = cfs_time_current_64();
 985                         spin_unlock(&obd->obd_osfs_lock);
 986                 }
 987         } else {
 988                 CDEBUG(D_SUPER, "using cached obd_statfs data\n");
 989                 spin_lock(&obd->obd_osfs_lock);
 990                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
 991                 spin_unlock(&obd->obd_osfs_lock);
 992         }
 993         RETURN(rc);
 994 }
 995
 996 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
 997                            struct lov_stripe_md *ea, obd_size start,
 998                            obd_size end, void *capa)
 999 {
1000         int rc;
1001         ENTRY;
1002
1003         OBD_CHECK_DT_OP(exp->exp_obd, sync, -EOPNOTSUPP);
1004         OBD_COUNTER_INCREMENT(exp->exp_obd, sync);
1005
1006         rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end, capa);
1007         RETURN(rc);
1008 }
1009
1010 static inline int obd_punch_rqset(struct obd_export *exp,
1011                                   struct obd_info *oinfo,
1012                                   struct obd_trans_info *oti)
1013 {
1014         struct ptlrpc_request_set *set = NULL;
1015         int rc;
1016         ENTRY;
1017
1018         EXP_CHECK_DT_OP(exp, punch);
1019         OBD_COUNTER_INCREMENT(exp->exp_obd, punch);
1020
1021         set =  ptlrpc_prep_set();
1022         if (set == NULL)
1023                 RETURN(-ENOMEM);
1024
1025         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, set);
1026         if (rc == 0)
1027                 rc = ptlrpc_set_wait(set);
1028         ptlrpc_set_destroy(set);
1029         RETURN(rc);
1030 }
1031
1032 static inline int obd_punch(struct obd_export *exp, struct obd_info *oinfo,
1033                             struct obd_trans_info *oti,
1034                             struct ptlrpc_request_set *rqset)
1035 {
1036         int rc;
1037         ENTRY;
1038
1039         EXP_CHECK_DT_OP(exp, punch);
1040         OBD_COUNTER_INCREMENT(exp->exp_obd, punch);
1041
1042         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, rqset);
1043         RETURN(rc);
1044 }
1045
1046 static inline int obd_brw(int cmd, struct obd_export *exp,
1047                           struct obd_info *oinfo, obd_count oa_bufs,
1048                           struct brw_page *pg, struct obd_trans_info *oti)
1049 {
1050         int rc;
1051         ENTRY;
1052
1053         EXP_CHECK_DT_OP(exp, brw);
1054         OBD_COUNTER_INCREMENT(exp->exp_obd, brw);
1055
1056         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
1057                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
1058                        "or OBD_BRW_CHECK\n");
1059                 LBUG();
1060         }
1061
1062         rc = OBP(exp->exp_obd, brw)(cmd, exp, oinfo, oa_bufs, pg, oti);
1063         RETURN(rc);
1064 }
1065
1066 static inline int obd_brw_async(int cmd, struct obd_export *exp,
1067                                 struct obd_info *oinfo, obd_count oa_bufs,
1068                                 struct brw_page *pg, struct obd_trans_info *oti,
1069                                 struct ptlrpc_request_set *set)
1070 {
1071         int rc;
1072         ENTRY;
1073
1074         EXP_CHECK_DT_OP(exp, brw_async);
1075         OBD_COUNTER_INCREMENT(exp->exp_obd, brw_async);
1076
1077         if (!(cmd & OBD_BRW_RWMASK)) {
1078                 CERROR("obd_brw: cmd must be OBD_BRW_READ or OBD_BRW_WRITE\n");
1079                 LBUG();
1080         }
1081
1082         rc = OBP(exp->exp_obd, brw_async)(cmd, exp, oinfo, oa_bufs, pg,oti,set);
1083         RETURN(rc);
1084 }
1085
1086 static inline int obd_brw_rqset(int cmd, struct obd_export *exp,
1087                                 struct obdo *oa, struct lov_stripe_md *lsm,
1088                                 obd_count oa_bufs, struct brw_page *pg,
1089                                 struct obd_trans_info *oti,
1090                                 struct obd_capa *ocapa)
1091 {
1092         struct ptlrpc_request_set *set = NULL;
1093         struct obd_info oinfo = { { { 0 } } };
1094         int rc = 0;
1095         ENTRY;
1096
1097         set =  ptlrpc_prep_set();
1098         if (set == NULL)
1099                 RETURN(-ENOMEM);
1100
1101         oinfo.oi_oa = oa;
1102         oinfo.oi_md = lsm;
1103         oinfo.oi_capa = ocapa;
1104         rc = obd_brw_async(cmd, exp, &oinfo, oa_bufs, pg, oti, set);
1105         if (rc == 0) {
1106                 rc = ptlrpc_set_wait(set);
1107                 if (rc)
1108                         CERROR("error from callback: rc = %d\n", rc);
1109         } else {
1110                 CDEBUG(D_INODE, "error from obd_brw_async: rc = %d\n", rc);
1111         }
1112         ptlrpc_set_destroy(set);
1113         RETURN(rc);
1114 }
1115
1116 static inline  int obd_prep_async_page(struct obd_export *exp,
1117                                        struct lov_stripe_md *lsm,
1118                                        struct lov_oinfo *loi,
1119                                        struct page *page, obd_off offset,
1120                                        struct obd_async_page_ops *ops,
1121                                        void *data, void **res)
1122 {
1123         int ret;
1124         ENTRY;
1125
1126         OBD_CHECK_DT_OP(exp->exp_obd, prep_async_page, -EOPNOTSUPP);
1127         OBD_COUNTER_INCREMENT(exp->exp_obd, prep_async_page);
1128
1129         ret = OBP(exp->exp_obd, prep_async_page)(exp, lsm, loi, page, offset,
1130                                                  ops, data, res);
1131         RETURN(ret);
1132 }
1133
1134 static inline int obd_queue_async_io(struct obd_export *exp,
1135                                      struct lov_stripe_md *lsm,
1136                                      struct lov_oinfo *loi, void *cookie,
1137                                      int cmd, obd_off off, int count,
1138                                      obd_flag brw_flags, obd_flag async_flags)
1139 {
1140         int rc;
1141         ENTRY;
1142
1143         OBD_CHECK_DT_OP(exp->exp_obd, queue_async_io, -EOPNOTSUPP);
1144         OBD_COUNTER_INCREMENT(exp->exp_obd, queue_async_io);
1145         LASSERT(cmd & OBD_BRW_RWMASK);
1146
1147         rc = OBP(exp->exp_obd, queue_async_io)(exp, lsm, loi, cookie, cmd, off,
1148                                                count, brw_flags, async_flags);
1149         RETURN(rc);
1150 }
1151
1152 static inline int obd_set_async_flags(struct obd_export *exp,
1153                                       struct lov_stripe_md *lsm,
1154                                       struct lov_oinfo *loi, void *cookie,
1155                                       obd_flag async_flags)
1156 {
1157         int rc;
1158         ENTRY;
1159
1160         OBD_CHECK_DT_OP(exp->exp_obd, set_async_flags, -EOPNOTSUPP);
1161         OBD_COUNTER_INCREMENT(exp->exp_obd, set_async_flags);
1162
1163         rc = OBP(exp->exp_obd, set_async_flags)(exp, lsm, loi, cookie,
1164                                                 async_flags);
1165         RETURN(rc);
1166 }
1167
1168 static inline int obd_queue_group_io(struct obd_export *exp,
1169                                      struct lov_stripe_md *lsm,
1170                                      struct lov_oinfo *loi,
1171                                      struct obd_io_group *oig,
1172                                      void *cookie, int cmd, obd_off off,
1173                                      int count, obd_flag brw_flags,
1174                                      obd_flag async_flags)
1175 {
1176         int rc;
1177         ENTRY;
1178
1179         OBD_CHECK_DT_OP(exp->exp_obd, queue_group_io, -EOPNOTSUPP);
1180         OBD_COUNTER_INCREMENT(exp->exp_obd, queue_group_io);
1181         LASSERT(cmd & OBD_BRW_RWMASK);
1182
1183         rc = OBP(exp->exp_obd, queue_group_io)(exp, lsm, loi, oig, cookie,
1184                                                cmd, off, count, brw_flags,
1185                                                async_flags);
1186         RETURN(rc);
1187 }
1188
1189 static inline int obd_trigger_group_io(struct obd_export *exp,
1190                                        struct lov_stripe_md *lsm,
1191                                        struct lov_oinfo *loi,
1192                                        struct obd_io_group *oig)
1193 {
1194         int rc;
1195         ENTRY;
1196
1197         OBD_CHECK_DT_OP(exp->exp_obd, trigger_group_io, -EOPNOTSUPP);
1198         OBD_COUNTER_INCREMENT(exp->exp_obd, trigger_group_io);
1199
1200         rc = OBP(exp->exp_obd, trigger_group_io)(exp, lsm, loi, oig);
1201         RETURN(rc);
1202 }
1203
1204 static inline int obd_teardown_async_page(struct obd_export *exp,
1205                                           struct lov_stripe_md *lsm,
1206                                           struct lov_oinfo *loi, void *cookie)
1207 {
1208         int rc;
1209         ENTRY;
1210
1211         OBD_CHECK_DT_OP(exp->exp_obd, teardown_async_page, -EOPNOTSUPP);
1212         OBD_COUNTER_INCREMENT(exp->exp_obd, teardown_async_page);
1213
1214         rc = OBP(exp->exp_obd, teardown_async_page)(exp, lsm, loi, cookie);
1215         RETURN(rc);
1216 }
1217
1218 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
1219                              int objcount, struct obd_ioobj *obj,
1220                              int niocount, struct niobuf_remote *remote,
1221                              struct niobuf_local *local,
1222                              struct obd_trans_info *oti,
1223                              struct lustre_capa *capa)
1224 {
1225         int rc;
1226         ENTRY;
1227
1228         OBD_CHECK_DT_OP(exp->exp_obd, preprw, -EOPNOTSUPP);
1229         OBD_COUNTER_INCREMENT(exp->exp_obd, preprw);
1230
1231         rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, niocount,
1232                                        remote, local, oti, capa);
1233         RETURN(rc);
1234 }
1235
1236 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
1237                                int objcount, struct obd_ioobj *obj,
1238                                int niocount, struct niobuf_local *local,
1239                                struct obd_trans_info *oti, int rc)
1240 {
1241         ENTRY;
1242
1243         OBD_CHECK_DT_OP(exp->exp_obd, commitrw, -EOPNOTSUPP);
1244         OBD_COUNTER_INCREMENT(exp->exp_obd, commitrw);
1245
1246         rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj, niocount,
1247                                          local, oti, rc);
1248         RETURN(rc);
1249 }
1250
1251 static inline int obd_merge_lvb(struct obd_export *exp,
1252                                 struct lov_stripe_md *lsm,
1253                                 struct ost_lvb *lvb, int kms_only)
1254 {
1255         int rc;
1256         ENTRY;
1257
1258         OBD_CHECK_DT_OP(exp->exp_obd, merge_lvb, -EOPNOTSUPP);
1259         OBD_COUNTER_INCREMENT(exp->exp_obd, merge_lvb);
1260
1261         rc = OBP(exp->exp_obd, merge_lvb)(exp, lsm, lvb, kms_only);
1262         RETURN(rc);
1263 }
1264
1265 static inline int obd_adjust_kms(struct obd_export *exp,
1266                                  struct lov_stripe_md *lsm, obd_off size,
1267                                  int shrink)
1268 {
1269         int rc;
1270         ENTRY;
1271
1272         OBD_CHECK_DT_OP(exp->exp_obd, adjust_kms, -EOPNOTSUPP);
1273         OBD_COUNTER_INCREMENT(exp->exp_obd, adjust_kms);
1274
1275         rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
1276         RETURN(rc);
1277 }
1278
1279 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1280                                 int len, void *karg, void *uarg)
1281 {
1282         int rc;
1283         ENTRY;
1284
1285         EXP_CHECK_DT_OP(exp, iocontrol);
1286         OBD_COUNTER_INCREMENT(exp->exp_obd, iocontrol);
1287
1288         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1289         RETURN(rc);
1290 }
1291
1292 static inline int obd_enqueue_rqset(struct obd_export *exp,
1293                                     struct obd_info *oinfo,
1294                                     struct obd_enqueue_info *einfo)
1295 {
1296         int rc;
1297         ENTRY;
1298
1299         EXP_CHECK_DT_OP(exp, enqueue);
1300         OBD_COUNTER_INCREMENT(exp->exp_obd, enqueue);
1301
1302         einfo->ei_rqset =  ptlrpc_prep_set();
1303         if (einfo->ei_rqset == NULL)
1304                 RETURN(-ENOMEM);
1305
1306         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo);
1307         if (rc == 0)
1308                 rc = ptlrpc_set_wait(einfo->ei_rqset);
1309         ptlrpc_set_destroy(einfo->ei_rqset);
1310         einfo->ei_rqset = NULL;
1311
1312         RETURN(rc);
1313 }
1314
1315 static inline int obd_enqueue(struct obd_export *exp,
1316                               struct obd_info *oinfo,
1317                               struct obd_enqueue_info *einfo)
1318 {
1319         int rc;
1320         ENTRY;
1321
1322         EXP_CHECK_DT_OP(exp, enqueue);
1323         OBD_COUNTER_INCREMENT(exp->exp_obd, enqueue);
1324
1325         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo);
1326         RETURN(rc);
1327 }
1328
1329 static inline int obd_match(struct obd_export *exp, struct lov_stripe_md *ea,
1330                             __u32 type, ldlm_policy_data_t *policy, __u32 mode,
1331                             int *flags, void *data, struct lustre_handle *lockh)
1332 {
1333         int rc;
1334         ENTRY;
1335
1336         EXP_CHECK_DT_OP(exp, match);
1337         OBD_COUNTER_INCREMENT(exp->exp_obd, match);
1338
1339         rc = OBP(exp->exp_obd, match)(exp, ea, type, policy, mode, flags, data,
1340                                       lockh);
1341         RETURN(rc);
1342 }
1343
1344 static inline int obd_change_cbdata(struct obd_export *exp,
1345                                     struct lov_stripe_md *lsm,
1346                                     ldlm_iterator_t it, void *data)
1347 {
1348         int rc;
1349         ENTRY;
1350
1351         EXP_CHECK_DT_OP(exp, change_cbdata);
1352         OBD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata);
1353
1354         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1355         RETURN(rc);
1356 }
1357
1358 static inline int obd_cancel(struct obd_export *exp,
1359                              struct lov_stripe_md *ea, __u32 mode,
1360                              struct lustre_handle *lockh)
1361 {
1362         int rc;
1363         ENTRY;
1364
1365         EXP_CHECK_DT_OP(exp, cancel);
1366         OBD_COUNTER_INCREMENT(exp->exp_obd, cancel);
1367
1368         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1369         RETURN(rc);
1370 }
1371
1372 static inline int obd_cancel_unused(struct obd_export *exp,
1373                                     struct lov_stripe_md *ea,
1374                                     int flags, void *opaque)
1375 {
1376         int rc;
1377         ENTRY;
1378
1379         EXP_CHECK_DT_OP(exp, cancel_unused);
1380         OBD_COUNTER_INCREMENT(exp->exp_obd, cancel_unused);
1381
1382         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1383         RETURN(rc);
1384 }
1385
1386 static inline int obd_join_lru(struct obd_export *exp,
1387                                struct lov_stripe_md *ea, int join)
1388 {
1389         int rc;
1390         ENTRY;
1391
1392         EXP_CHECK_DT_OP(exp, join_lru);
1393         OBD_COUNTER_INCREMENT(exp->exp_obd, join_lru);
1394
1395         rc = OBP(exp->exp_obd, join_lru)(exp, ea, join);
1396         RETURN(rc);
1397 }
1398
1399 static inline int obd_pin(struct obd_export *exp, const struct lu_fid *fid,
1400                           struct obd_capa *oc, struct obd_client_handle *handle,
1401                           int flag)
1402 {
1403         int rc;
1404
1405         EXP_CHECK_DT_OP(exp, pin);
1406         OBD_COUNTER_INCREMENT(exp->exp_obd, pin);
1407
1408         rc = OBP(exp->exp_obd, pin)(exp, fid, oc, handle, flag);
1409         return(rc);
1410 }
1411
1412 static inline int obd_unpin(struct obd_export *exp,
1413                             struct obd_client_handle *handle, int flag)
1414 {
1415         int rc;
1416
1417         EXP_CHECK_DT_OP(exp, unpin);
1418         OBD_COUNTER_INCREMENT(exp->exp_obd, unpin);
1419
1420         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1421         return(rc);
1422 }
1423
1424
1425 static inline void obd_import_event(struct obd_device *obd,
1426                                     struct obd_import *imp,
1427                                     enum obd_import_event event)
1428 {
1429         if (!obd) {
1430                 CERROR("NULL device\n");
1431                 EXIT;
1432                 return;
1433         }
1434         if (obd->obd_set_up && OBP(obd, import_event)) {
1435                 OBD_COUNTER_INCREMENT(obd, import_event);
1436                 OBP(obd, import_event)(obd, imp, event);
1437         }
1438 }
1439
1440 static inline int obd_llog_connect(struct obd_export *exp,
1441                                    struct llogd_conn_body *body)
1442 {
1443         ENTRY;
1444
1445         OBD_CHECK_DT_OP(exp->exp_obd, llog_connect, 0);
1446         OBD_COUNTER_INCREMENT(exp->exp_obd, llog_connect);
1447
1448         return OBP(exp->exp_obd, llog_connect)(exp, body);
1449 }
1450
1451
1452 static inline int obd_notify(struct obd_device *obd,
1453                              struct obd_device *watched,
1454                              enum obd_notify_event ev,
1455                              void *data)
1456 {
1457         OBD_CHECK_DEV(obd);
1458
1459         /* the check for async_recov is a complete hack - I'm hereby
1460            overloading the meaning to also mean "this was called from
1461            mds_postsetup".  I know that my mds is able to handle notifies
1462            by this point, and it needs to get them to execute mds_postrecov. */
1463         if (!obd->obd_set_up && !obd->obd_async_recov) {
1464                 CDEBUG(D_HA, "obd %s not set up\n", obd->obd_name);
1465                 return -EINVAL;
1466         }
1467
1468         if (!OBP(obd, notify)) {
1469                 CERROR("obd %s has no notify handler\n", obd->obd_name);
1470                 return -ENOSYS;
1471         }
1472
1473         OBD_COUNTER_INCREMENT(obd, notify);
1474         return OBP(obd, notify)(obd, watched, ev, data);
1475 }
1476
1477 static inline int obd_notify_observer(struct obd_device *observer,
1478                                       struct obd_device *observed,
1479                                       enum obd_notify_event ev,
1480                                       void *data)
1481 {
1482         int rc1;
1483         int rc2;
1484
1485         struct obd_notify_upcall *onu;
1486
1487         if (observer->obd_observer)
1488                 rc1 = obd_notify(observer->obd_observer, observed, ev, data);
1489         else
1490                 rc1 = 0;
1491         /*
1492          * Also, call non-obd listener, if any
1493          */
1494         onu = &observer->obd_upcall;
1495         if (onu->onu_upcall != NULL)
1496                 rc2 = onu->onu_upcall(observer, observed, ev, onu->onu_owner);
1497         else
1498                 rc2 = 0;
1499
1500         return rc1 ? rc1 : rc2;
1501 }
1502
1503 static inline int obd_quotacheck(struct obd_export *exp,
1504                                  struct obd_quotactl *oqctl)
1505 {
1506         int rc;
1507         ENTRY;
1508
1509         EXP_CHECK_DT_OP(exp, quotacheck);
1510         OBD_COUNTER_INCREMENT(exp->exp_obd, quotacheck);
1511
1512         rc = OBP(exp->exp_obd, quotacheck)(exp, oqctl);
1513         RETURN(rc);
1514 }
1515
1516 static inline int obd_quotactl(struct obd_export *exp,
1517                                struct obd_quotactl *oqctl)
1518 {
1519         int rc;
1520         ENTRY;
1521
1522         EXP_CHECK_DT_OP(exp, quotactl);
1523         OBD_COUNTER_INCREMENT(exp->exp_obd, quotactl);
1524
1525         rc = OBP(exp->exp_obd, quotactl)(exp, oqctl);
1526         RETURN(rc);
1527 }
1528
1529 static inline int obd_health_check(struct obd_device *obd)
1530 {
1531         /* returns: 0 on healthy
1532          *         >0 on unhealthy + reason code/flag
1533          *            however the only suppored reason == 1 right now
1534          *            We'll need to define some better reasons
1535          *            or flags in the future.
1536          *         <0 on error
1537          */
1538         int rc;
1539         ENTRY;
1540
1541         /* don't use EXP_CHECK_DT_OP, because NULL method is normal here */
1542         if (obd == NULL || !OBT(obd)) {
1543                 CERROR("cleaned up obd\n");
1544                 RETURN(-EOPNOTSUPP);
1545         }
1546         if (!obd->obd_set_up || obd->obd_stopping)
1547                 RETURN(0);
1548         if (!OBP(obd, health_check))
1549                 RETURN(0);
1550
1551         rc = OBP(obd, health_check)(obd);
1552         RETURN(rc);
1553 }
1554
1555 static inline int obd_register_observer(struct obd_device *obd,
1556                                         struct obd_device *observer)
1557 {
1558         ENTRY;
1559         OBD_CHECK_DEV(obd);
1560         if (obd->obd_observer && observer)
1561                 RETURN(-EALREADY);
1562         obd->obd_observer = observer;
1563         RETURN(0);
1564 }
1565
1566 /* metadata helpers */
1567 static inline int md_getstatus(struct obd_export *exp,
1568                                struct lu_fid *fid, struct obd_capa **pc)
1569 {
1570         int rc;
1571         ENTRY;
1572
1573         EXP_CHECK_MD_OP(exp, getstatus);
1574         MD_COUNTER_INCREMENT(exp->exp_obd, getstatus);
1575         rc = MDP(exp->exp_obd, getstatus)(exp, fid, pc);
1576         RETURN(rc);
1577 }
1578
1579 static inline int md_getattr(struct obd_export *exp, const struct lu_fid *fid,
1580                              struct obd_capa *oc, obd_valid valid, int ea_size,
1581                              struct ptlrpc_request **request)
1582 {
1583         int rc;
1584         ENTRY;
1585         EXP_CHECK_MD_OP(exp, getattr);
1586         MD_COUNTER_INCREMENT(exp->exp_obd, getattr);
1587         rc = MDP(exp->exp_obd, getattr)(exp, fid, oc, valid,
1588                                         ea_size, request);
1589         RETURN(rc);
1590 }
1591
1592 static inline int md_change_cbdata(struct obd_export *exp,
1593                                    const struct lu_fid *fid,
1594                                    ldlm_iterator_t it, void *data)
1595 {
1596         int rc;
1597         ENTRY;
1598         EXP_CHECK_MD_OP(exp, change_cbdata);
1599         MD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata);
1600         rc = MDP(exp->exp_obd, change_cbdata)(exp, fid, it, data);
1601         RETURN(rc);
1602 }
1603
1604 static inline int md_close(struct obd_export *exp, struct md_op_data *op_data,
1605                            struct obd_client_handle *och,
1606                            struct ptlrpc_request **request)
1607 {
1608         int rc;
1609         ENTRY;
1610         EXP_CHECK_MD_OP(exp, close);
1611         MD_COUNTER_INCREMENT(exp->exp_obd, close);
1612         rc = MDP(exp->exp_obd, close)(exp, op_data, och, request);
1613         RETURN(rc);
1614 }
1615
1616 static inline int md_create(struct obd_export *exp, struct md_op_data *op_data,
1617                             const void *data, int datalen, int mode, __u32 uid,
1618                             __u32 gid, __u32 cap_effective, __u64 rdev,
1619                             struct ptlrpc_request **request)
1620 {
1621         int rc;
1622         ENTRY;
1623         EXP_CHECK_MD_OP(exp, create);
1624         MD_COUNTER_INCREMENT(exp->exp_obd, create);
1625         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1626                                        uid, gid, cap_effective, rdev, request);
1627         RETURN(rc);
1628 }
1629
1630 static inline int md_done_writing(struct obd_export *exp,
1631                                   struct md_op_data *op_data,
1632                                   struct obd_client_handle *och)
1633 {
1634         int rc;
1635         ENTRY;
1636         EXP_CHECK_MD_OP(exp, done_writing);
1637         MD_COUNTER_INCREMENT(exp->exp_obd, done_writing);
1638         rc = MDP(exp->exp_obd, done_writing)(exp, op_data, och);
1639         RETURN(rc);
1640 }
1641
1642 static inline int md_enqueue(struct obd_export *exp, int lock_type,
1643                              struct lookup_intent *it, int lock_mode,
1644                              struct md_op_data *op_data,
1645                              struct lustre_handle *lockh,
1646                              void *lmm, int lmmsize,
1647                              ldlm_completion_callback cb_completion,
1648                              ldlm_blocking_callback cb_blocking,
1649                              void *cb_data, int extra_lock_flags)
1650 {
1651         int rc;
1652         ENTRY;
1653         EXP_CHECK_MD_OP(exp, enqueue);
1654         MD_COUNTER_INCREMENT(exp->exp_obd, enqueue);
1655         rc = MDP(exp->exp_obd, enqueue)(exp, lock_type, it, lock_mode,
1656                                         op_data, lockh, lmm, lmmsize,
1657                                         cb_completion, cb_blocking,
1658                                         cb_data, extra_lock_flags);
1659         RETURN(rc);
1660 }
1661
1662 static inline int md_getattr_name(struct obd_export *exp,
1663                                   const struct lu_fid *fid, struct obd_capa *oc,
1664                                   const char *name, int namelen,
1665                                   obd_valid valid, int ea_size,
1666                                   struct ptlrpc_request **request)
1667 {
1668         int rc;
1669         ENTRY;
1670         EXP_CHECK_MD_OP(exp, getattr_name);
1671         MD_COUNTER_INCREMENT(exp->exp_obd, getattr_name);
1672         rc = MDP(exp->exp_obd, getattr_name)(exp, fid, oc, name, namelen,
1673                                              valid, ea_size, request);
1674         RETURN(rc);
1675 }
1676
1677 static inline int md_intent_lock(struct obd_export *exp,
1678                                  struct md_op_data *op_data, void *lmm,
1679                                  int lmmsize, struct lookup_intent *it,
1680                                  int flags, struct ptlrpc_request **reqp,
1681                                  ldlm_blocking_callback cb_blocking,
1682                                  int extra_lock_flags)
1683 {
1684         int rc;
1685         ENTRY;
1686         EXP_CHECK_MD_OP(exp, intent_lock);
1687         MD_COUNTER_INCREMENT(exp->exp_obd, intent_lock);
1688         rc = MDP(exp->exp_obd, intent_lock)(exp, op_data, lmm, lmmsize,
1689                                             it, flags, reqp, cb_blocking,
1690                                             extra_lock_flags);
1691         RETURN(rc);
1692 }
1693
1694 static inline int md_link(struct obd_export *exp, struct md_op_data *op_data,
1695                           struct ptlrpc_request **request)
1696 {
1697         int rc;
1698         ENTRY;
1699         EXP_CHECK_MD_OP(exp, link);
1700         MD_COUNTER_INCREMENT(exp->exp_obd, link);
1701         rc = MDP(exp->exp_obd, link)(exp, op_data, request);
1702         RETURN(rc);
1703 }
1704
1705 static inline int md_rename(struct obd_export *exp, struct md_op_data *op_data,
1706                             const char *old, int oldlen, const char *new,
1707                             int newlen, struct ptlrpc_request **request)
1708 {
1709         int rc;
1710         ENTRY;
1711         EXP_CHECK_MD_OP(exp, rename);
1712         MD_COUNTER_INCREMENT(exp->exp_obd, rename);
1713         rc = MDP(exp->exp_obd, rename)(exp, op_data, old, oldlen, new,
1714                                        newlen, request);
1715         RETURN(rc);
1716 }
1717
1718 static inline int md_is_subdir(struct obd_export *exp,
1719                                const struct lu_fid *pfid,
1720                                const struct lu_fid *cfid,
1721                                struct obd_capa *pc, struct obd_capa *cc,
1722                                struct ptlrpc_request **request)
1723 {
1724         int rc;
1725         ENTRY;
1726         EXP_CHECK_MD_OP(exp, is_subdir);
1727         MD_COUNTER_INCREMENT(exp->exp_obd, is_subdir);
1728         rc = MDP(exp->exp_obd, is_subdir)(exp, pfid, cfid, pc, cc, request);
1729         RETURN(rc);
1730 }
1731
1732 static inline int md_setattr(struct obd_export *exp, struct md_op_data *op_data,
1733                              void *ea, int ealen, void *ea2, int ea2len,
1734                              struct ptlrpc_request **request)
1735 {
1736         int rc;
1737         ENTRY;
1738         EXP_CHECK_MD_OP(exp, setattr);
1739         MD_COUNTER_INCREMENT(exp->exp_obd, setattr);
1740         rc = MDP(exp->exp_obd, setattr)(exp, op_data, ea, ealen,
1741                                         ea2, ea2len, request);
1742         RETURN(rc);
1743 }
1744
1745 static inline int md_sync(struct obd_export *exp, const struct lu_fid *fid,
1746                           struct obd_capa *oc, struct ptlrpc_request **request)
1747 {
1748         int rc;
1749         ENTRY;
1750         EXP_CHECK_MD_OP(exp, sync);
1751         MD_COUNTER_INCREMENT(exp->exp_obd, sync);
1752         rc = MDP(exp->exp_obd, sync)(exp, fid, oc, request);
1753         RETURN(rc);
1754 }
1755
1756 static inline int md_readpage(struct obd_export *exp, const struct lu_fid *fid,
1757                               struct obd_capa *oc, __u64 offset,
1758                               struct page *page,
1759                               struct ptlrpc_request **request)
1760 {
1761         int rc;
1762         ENTRY;
1763         EXP_CHECK_MD_OP(exp, readpage);
1764         MD_COUNTER_INCREMENT(exp->exp_obd, readpage);
1765         rc = MDP(exp->exp_obd, readpage)(exp, fid, oc, offset, page, request);
1766         RETURN(rc);
1767 }
1768
1769 static inline int md_unlink(struct obd_export *exp, struct md_op_data *op_data,
1770                             struct ptlrpc_request **request)
1771 {
1772         int rc;
1773         ENTRY;
1774         EXP_CHECK_MD_OP(exp, unlink);
1775         MD_COUNTER_INCREMENT(exp->exp_obd, unlink);
1776         rc = MDP(exp->exp_obd, unlink)(exp, op_data, request);
1777         RETURN(rc);
1778 }
1779
1780 static inline int md_get_lustre_md(struct obd_export *exp,
1781                                    struct ptlrpc_request *req,
1782                                    int offset, struct obd_export *dt_exp,
1783                                    struct obd_export *md_exp,
1784                                    struct lustre_md *md)
1785 {
1786         ENTRY;
1787         EXP_CHECK_MD_OP(exp, get_lustre_md);
1788         MD_COUNTER_INCREMENT(exp->exp_obd, get_lustre_md);
1789         RETURN(MDP(exp->exp_obd, get_lustre_md)(exp, req, offset,
1790                                                 dt_exp, md_exp, md));
1791 }
1792
1793 static inline int md_free_lustre_md(struct obd_export *exp,
1794                                     struct lustre_md *md)
1795 {
1796         ENTRY;
1797         EXP_CHECK_MD_OP(exp, free_lustre_md);
1798         MD_COUNTER_INCREMENT(exp->exp_obd, free_lustre_md);
1799         RETURN(MDP(exp->exp_obd, free_lustre_md)(exp, md));
1800 }
1801
1802 static inline int md_setxattr(struct obd_export *exp,
1803                               const struct lu_fid *fid, struct obd_capa *oc,
1804                               obd_valid valid, const char *name,
1805                               const char *input, int input_size,
1806                               int output_size, int flags,
1807                               struct ptlrpc_request **request)
1808 {
1809         ENTRY;
1810         EXP_CHECK_MD_OP(exp, setxattr);
1811         MD_COUNTER_INCREMENT(exp->exp_obd, setxattr);
1812         RETURN(MDP(exp->exp_obd, setxattr)(exp, fid, oc, valid, name, input,
1813                                            input_size, output_size, flags,
1814                                            request));
1815 }
1816
1817 static inline int md_getxattr(struct obd_export *exp,
1818                               const struct lu_fid *fid, struct obd_capa *oc,
1819                               obd_valid valid, const char *name,
1820                               const char *input, int input_size,
1821                               int output_size, int flags,
1822                               struct ptlrpc_request **request)
1823 {
1824         ENTRY;
1825         EXP_CHECK_MD_OP(exp, getxattr);
1826         MD_COUNTER_INCREMENT(exp->exp_obd, getxattr);
1827         RETURN(MDP(exp->exp_obd, getxattr)(exp, fid, oc, valid, name, input,
1828                                            input_size, output_size, flags,
1829                                            request));
1830 }
1831
1832 static inline int md_set_open_replay_data(struct obd_export *exp,
1833                                           struct obd_client_handle *och,
1834                                           struct ptlrpc_request *open_req)
1835 {
1836         ENTRY;
1837         EXP_CHECK_MD_OP(exp, set_open_replay_data);
1838         MD_COUNTER_INCREMENT(exp->exp_obd, set_open_replay_data);
1839         RETURN(MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req));
1840 }
1841
1842 static inline int md_clear_open_replay_data(struct obd_export *exp,
1843                                             struct obd_client_handle *och)
1844 {
1845         ENTRY;
1846         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
1847         MD_COUNTER_INCREMENT(exp->exp_obd, clear_open_replay_data);
1848         RETURN(MDP(exp->exp_obd, clear_open_replay_data)(exp, och));
1849 }
1850
1851 static inline int md_set_lock_data(struct obd_export *exp,
1852                                    __u64 *lockh, void *data)
1853 {
1854         ENTRY;
1855         EXP_CHECK_MD_OP(exp, set_lock_data);
1856         MD_COUNTER_INCREMENT(exp->exp_obd, set_lock_data);
1857         RETURN(MDP(exp->exp_obd, set_lock_data)(exp, lockh, data));
1858 }
1859
1860 static inline int md_cancel_unused(struct obd_export *exp,
1861                                    const struct lu_fid *fid,
1862                                    int flags, void *opaque)
1863 {
1864         int rc;
1865         ENTRY;
1866
1867         EXP_CHECK_MD_OP(exp, cancel_unused);
1868         MD_COUNTER_INCREMENT(exp->exp_obd, cancel_unused);
1869
1870         rc = MDP(exp->exp_obd, cancel_unused)(exp, fid, flags, opaque);
1871         RETURN(rc);
1872 }
1873
1874 static inline int md_lock_match(struct obd_export *exp, int flags,
1875                                 const struct lu_fid *fid, ldlm_type_t type,
1876                                 ldlm_policy_data_t *policy, ldlm_mode_t mode,
1877                                 struct lustre_handle *lockh)
1878 {
1879         ENTRY;
1880         EXP_CHECK_MD_OP(exp, lock_match);
1881         MD_COUNTER_INCREMENT(exp->exp_obd, lock_match);
1882         RETURN(MDP(exp->exp_obd, lock_match)(exp, flags, fid, type,
1883                                              policy, mode, lockh));
1884 }
1885
1886 static inline int md_init_ea_size(struct obd_export *exp, int easize,
1887                                   int def_asize, int cookiesize)
1888 {
1889         ENTRY;
1890         EXP_CHECK_MD_OP(exp, init_ea_size);
1891         MD_COUNTER_INCREMENT(exp->exp_obd, init_ea_size);
1892         RETURN(MDP(exp->exp_obd, init_ea_size)(exp, easize, def_asize,
1893                                                cookiesize));
1894 }
1895
1896 static inline int md_get_remote_perm(struct obd_export *exp,
1897                                      const struct lu_fid *fid,
1898                                      struct obd_capa *oc,
1899                                      struct ptlrpc_request **request)
1900 {
1901         ENTRY;
1902         EXP_CHECK_MD_OP(exp, get_remote_perm);
1903         MD_COUNTER_INCREMENT(exp->exp_obd, get_remote_perm);
1904         RETURN(MDP(exp->exp_obd, get_remote_perm)(exp, fid, oc, request));
1905 }
1906
1907 static inline int md_renew_capa(struct obd_export *exp, struct obd_capa *ocapa,
1908                                 renew_capa_cb_t cb)
1909 {
1910         int rc;
1911         ENTRY;
1912         EXP_CHECK_MD_OP(exp, renew_capa);
1913         MD_COUNTER_INCREMENT(exp->exp_obd, renew_capa);
1914         rc = MDP(exp->exp_obd, renew_capa)(exp, ocapa, cb);
1915         RETURN(rc);
1916 }
1917
1918 /* OBD Metadata Support */
1919 extern int obd_init_caches(void);
1920 extern void obd_cleanup_caches(void);
1921
1922 /* support routines */
1923 extern cfs_mem_cache_t *obdo_cachep;
1924 static inline struct obdo *obdo_alloc(void)
1925 {
1926         struct obdo *oa;
1927         OBD_SLAB_ALLOC(oa, obdo_cachep, CFS_ALLOC_STD, sizeof(*oa));
1928         return oa;
1929 }
1930
1931 static inline void obdo_free(struct obdo *oa)
1932 {
1933         OBD_SLAB_FREE(oa, obdo_cachep, sizeof(*oa));
1934 }
1935
1936 static inline void obdo2fid(struct obdo *oa, struct lu_fid *fid)
1937 {
1938         /* something here */
1939 }
1940
1941 static inline void fid2obdo(struct lu_fid *fid, struct obdo *oa)
1942 {
1943         /* something here */
1944 }
1945
1946 /* I'm as embarrassed about this as you are.
1947  *
1948  * <shaver> // XXX do not look into _superhack with remaining eye
1949  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
1950 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
1951
1952 /* sysctl.c */
1953 extern void obd_sysctl_init (void);
1954 extern void obd_sysctl_clean (void);
1955
1956 /* uuid.c  */
1957 typedef __u8 class_uuid_t[16];
1958 void class_generate_random_uuid(class_uuid_t uuid);
1959 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
1960
1961 /* lustre_peer.c    */
1962 int lustre_uuid_to_peer(const char *uuid, lnet_nid_t *peer_nid, int index);
1963 int class_add_uuid(const char *uuid, __u64 nid);
1964 int class_del_uuid (const char *uuid);
1965 void class_init_uuidlist(void);
1966 void class_exit_uuidlist(void);
1967
1968 /* mea.c */
1969 int mea_name2idx(struct lmv_stripe_md *mea, char *name, int namelen);
1970 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
1971
1972 #endif /* __LINUX_OBD_CLASS_H */