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 int obd_zombie_impexp_init(void);
  94 void obd_zombie_impexp_stop(void);
  95 void obd_zombie_impexp_cull(void);
  96
  97 /* obd_config.c */
  98 int class_process_config(struct lustre_cfg *lcfg);
  99 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
 100                              struct lustre_cfg *lcfg, void *data);
 101 int class_attach(struct lustre_cfg *lcfg);
 102 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
 103 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg);
 104 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg);
 105 struct obd_device *class_incref(struct obd_device *obd);
 106 void class_decref(struct obd_device *obd);
 107
 108 /*obdecho*/
 109 #ifdef LPROCFS
 110 extern void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars);
 111 #else
 112 static inline void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars)
 113 {
 114         memset(lvars, 0, sizeof(*lvars));
 115 }
 116 #endif
 117
 118 #define CFG_F_START     0x01   /* Set when we start updating from a log */
 119 #define CFG_F_MARKER    0x02   /* We are within a maker */
 120 #define CFG_F_SKIP      0x04   /* We should ignore this cfg command */
 121 #define CFG_F_COMPAT146 0x08   /* Allow old-style logs */
 122 #define CFG_F_EXCLUDE   0x10   /* OST exclusion list */
 123
 124 /* Passed as data param to class_config_parse_llog */
 125 struct config_llog_instance {
 126         char *              cfg_instance;
 127         struct super_block *cfg_sb;
 128         struct obd_uuid     cfg_uuid;
 129         int                 cfg_last_idx; /* for partial llog processing */
 130         int                 cfg_flags;
 131 };
 132 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
 133                             struct config_llog_instance *cfg);
 134 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
 135                            struct config_llog_instance *cfg);
 136
 137 /* list of active configuration logs  */
 138 struct config_llog_data {
 139         char               *cld_logname;
 140         struct ldlm_res_id  cld_resid;
 141         struct config_llog_instance cld_cfg;
 142         struct list_head    cld_list_chain;
 143         atomic_t            cld_refcount;
 144         struct obd_export  *cld_mgcexp;
 145         unsigned int        cld_stopping:1, /* we were told to stop watching */
 146                             cld_lostlock:1; /* lock not requeued */
 147 };
 148
 149 struct lustre_profile {
 150         struct list_head lp_list;
 151         char            *lp_profile;
 152         char            *lp_dt;
 153         char            *lp_md;
 154 };
 155
 156 struct lustre_profile *class_get_profile(const char * prof);
 157 void class_del_profile(const char *prof);
 158 void class_del_profiles(void);
 159
 160 #define class_export_rpc_get(exp)                                       \
 161 ({                                                                      \
 162         atomic_inc(&(exp)->exp_rpc_count);                              \
 163         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",    \
 164                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 165         class_export_get(exp);                                          \
 166 })
 167
 168 #define class_export_rpc_put(exp)                                       \
 169 ({                                                                      \
 170         atomic_dec(&(exp)->exp_rpc_count);                              \
 171         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",    \
 172                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 173         class_export_put(exp);                                          \
 174 })
 175
 176 /* genops.c */
 177 #define class_export_get(exp)                                                  \
 178 ({                                                                             \
 179         struct obd_export *exp_ = exp;                                         \
 180         atomic_inc(&exp_->exp_refcount);                                       \
 181         CDEBUG(D_INFO, "GETting export %p : new refcount %d\n", exp_,          \
 182                atomic_read(&exp_->exp_refcount));                              \
 183         exp_;                                                                  \
 184 })
 185
 186 #define class_export_put(exp)                                                  \
 187 do {                                                                           \
 188         LASSERT((exp) != NULL);                                                \
 189         CDEBUG(D_INFO, "PUTting export %p : new refcount %d\n", (exp),         \
 190                atomic_read(&(exp)->exp_refcount) - 1);                         \
 191         LASSERT(atomic_read(&(exp)->exp_refcount) > 0);                        \
 192         LASSERT(atomic_read(&(exp)->exp_refcount) < 0x5a5a5a);                 \
 193         __class_export_put(exp);                                               \
 194 } while (0)
 195
 196 void __class_export_put(struct obd_export *);
 197 struct obd_export *class_new_export(struct obd_device *obddev,
 198                                     struct obd_uuid *cluuid);
 199 void class_unlink_export(struct obd_export *exp);
 200
 201 struct obd_import *class_import_get(struct obd_import *);
 202 void class_import_put(struct obd_import *);
 203 struct obd_import *class_new_import(struct obd_device *obd);
 204 void class_destroy_import(struct obd_import *exp);
 205
 206 struct obd_type *class_search_type(const char *name);
 207 struct obd_type *class_get_type(const char *name);
 208 void class_put_type(struct obd_type *type);
 209 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 210                   struct obd_uuid *cluuid);
 211 int class_disconnect(struct obd_export *exp);
 212 void class_fail_export(struct obd_export *exp);
 213 void class_disconnect_exports(struct obd_device *obddev);
 214 int class_disconnect_stale_exports(struct obd_device *,
 215                                     int (*test_export)(struct obd_export *));
 216 int class_manual_cleanup(struct obd_device *obd);
 217
 218 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_flag valid);
 219 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
 220 void obdo_from_iattr(struct obdo *oa, struct iattr *attr,
 221                      unsigned int ia_valid);
 222 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, obd_flag valid);
 223 void md_from_obdo(struct md_op_data *op_data, struct obdo *oa, obd_flag valid);
 224 void obdo_from_md(struct obdo *oa, struct md_op_data *op_data,
 225                   unsigned int valid);
 226
 227 #define OBT(dev)        (dev)->obd_type
 228 #define OBP(dev, op)    (dev)->obd_type->typ_dt_ops->o_ ## op
 229 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
 230 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 231
 232 /* Ensure obd_setup: used for cleanup which must be called
 233    while obd is stopping */
 234 #define OBD_CHECK_DEV(obd)                                      \
 235 do {                                                            \
 236         if (!(obd)) {                                           \
 237                 CERROR("NULL device\n");                        \
 238                 RETURN(-ENODEV);                                \
 239         }                                                       \
 240 } while (0)
 241
 242 /* ensure obd_setup and !obd_stopping */
 243 #define OBD_CHECK_DEV_ACTIVE(obd)                               \
 244 do {                                                            \
 245         OBD_CHECK_DEV(obd);                                     \
 246         if (!(obd)->obd_set_up || (obd)->obd_stopping) {        \
 247                 CERROR("Device %d not setup\n",                 \
 248                        (obd)->obd_minor);                       \
 249                 RETURN(-ENODEV);                                \
 250         }                                                       \
 251 } while (0)
 252
 253
 254 #ifdef LPROCFS
 255 #define OBD_COUNTER_OFFSET(op)                                  \
 256         ((offsetof(struct obd_ops, o_ ## op) -                  \
 257           offsetof(struct obd_ops, o_iocontrol))                \
 258          / sizeof(((struct obd_ops *)(0))->o_iocontrol))
 259
 260 #define OBD_COUNTER_INCREMENT(obdx, op)                           \
 261         if ((obdx)->obd_stats != NULL) {                          \
 262                 unsigned int coffset;                             \
 263                 coffset = (unsigned int)((obdx)->obd_cntr_base) + \
 264                         OBD_COUNTER_OFFSET(op);                   \
 265                 LASSERT(coffset < (obdx)->obd_stats->ls_num);     \
 266                 lprocfs_counter_incr((obdx)->obd_stats, coffset); \
 267         }
 268
 269 #define EXP_COUNTER_INCREMENT(export, op)                                    \
 270         if ((export)->exp_obd->obd_stats != NULL) {                          \
 271                 unsigned int coffset;                                        \
 272                 coffset = (unsigned int)((export)->exp_obd->obd_cntr_base) + \
 273                         OBD_COUNTER_OFFSET(op);                              \
 274                 LASSERT(coffset < (export)->exp_obd->obd_stats->ls_num);     \
 275                 lprocfs_counter_incr((export)->exp_obd->obd_stats, coffset); \
 276                 if ((export)->exp_nid_stats != NULL &&                       \
 277                     (export)->exp_nid_stats->nid_stats != NULL)              \
 278                         lprocfs_counter_incr(                                \
 279                                 (export)->exp_nid_stats->nid_stats, coffset);\
 280         }
 281
 282 #define MD_COUNTER_OFFSET(op)                                   \
 283         ((offsetof(struct md_ops, m_ ## op) -                   \
 284           offsetof(struct md_ops, m_getstatus))                 \
 285          / sizeof(((struct md_ops *)(0))->m_getstatus))
 286
 287 #define MD_COUNTER_INCREMENT(obdx, op)                           \
 288         if ((obd)->md_stats != NULL) {                           \
 289                 unsigned int coffset;                            \
 290                 coffset = (unsigned int)((obdx)->md_cntr_base) + \
 291                         MD_COUNTER_OFFSET(op);                   \
 292                 LASSERT(coffset < (obdx)->md_stats->ls_num);     \
 293                 lprocfs_counter_incr((obdx)->md_stats, coffset); \
 294         }
 295
 296 #define EXP_MD_COUNTER_INCREMENT(export, op)                                 \
 297         if ((export)->exp_obd->obd_stats != NULL) {                          \
 298                 unsigned int coffset;                                        \
 299                 coffset = (unsigned int)((export)->exp_obd->md_cntr_base) +  \
 300                         MD_COUNTER_OFFSET(op);                               \
 301                 LASSERT(coffset < (export)->exp_obd->md_stats->ls_num);      \
 302                 lprocfs_counter_incr((export)->exp_obd->md_stats, coffset);  \
 303                 if ((export)->exp_md_stats != NULL)                          \
 304                         lprocfs_counter_incr(                                \
 305                                 (export)->exp_md_stats, coffset);            \
 306         }
 307
 308 #else
 309 #define OBD_COUNTER_OFFSET(op)
 310 #define OBD_COUNTER_INCREMENT(obd, op)
 311 #define EXP_COUNTER_INCREMENT(exp, op)
 312 #define MD_COUNTER_INCREMENT(obd, op)
 313 #define EXP_MD_COUNTER_INCREMENT(exp, op)
 314 #endif
 315
 316 #define OBD_CHECK_MD_OP(obd, op, err)                           \
 317 do {                                                            \
 318         if (!OBT(obd) || !MDP((obd), op)) {                     \
 319                 if (err)                                        \
 320                         CERROR("md_" #op ": dev %s/%d no operation\n", \
 321                                obd->obd_name, obd->obd_minor);  \
 322                 RETURN(err);                                    \
 323         }                                                       \
 324 } while (0)
 325
 326 #define EXP_CHECK_MD_OP(exp, op)                                \
 327 do {                                                            \
 328         if ((exp) == NULL) {                                    \
 329                 CERROR("obd_" #op ": NULL export\n");           \
 330                 RETURN(-ENODEV);                                \
 331         }                                                       \
 332         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 333                 CERROR("obd_" #op ": cleaned up obd\n");        \
 334                 RETURN(-EOPNOTSUPP);                            \
 335         }                                                       \
 336         if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
 337                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 338                        (exp)->exp_obd->obd_name,                \
 339                        (exp)->exp_obd->obd_minor);              \
 340                 RETURN(-EOPNOTSUPP);                            \
 341         }                                                       \
 342 } while (0)
 343
 344
 345 #define OBD_CHECK_DT_OP(obd, op, err)                           \
 346 do {                                                            \
 347         if (!OBT(obd) || !OBP((obd), op)) {                     \
 348                 if (err)                                        \
 349                         CERROR("obd_" #op ": dev %d no operation\n",    \
 350                                obd->obd_minor);                 \
 351                 RETURN(err);                                    \
 352         }                                                       \
 353 } while (0)
 354
 355 #define EXP_CHECK_DT_OP(exp, op)                                \
 356 do {                                                            \
 357         if ((exp) == NULL) {                                    \
 358                 CERROR("obd_" #op ": NULL export\n");           \
 359                 RETURN(-ENODEV);                                \
 360         }                                                       \
 361         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 362                 CERROR("obd_" #op ": cleaned up obd\n");        \
 363                 RETURN(-EOPNOTSUPP);                            \
 364         }                                                       \
 365         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 366                 CERROR("obd_" #op ": dev %d no operation\n",    \
 367                        (exp)->exp_obd->obd_minor);              \
 368                 RETURN(-EOPNOTSUPP);                            \
 369         }                                                       \
 370 } while (0)
 371
 372 #define CTXT_CHECK_OP(ctxt, op, err)                                 \
 373 do {                                                                 \
 374         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {             \
 375                 if (err)                                             \
 376                         CERROR("lop_" #op ": dev %d no operation\n", \
 377                                ctxt->loc_obd->obd_minor);            \
 378                 RETURN(err);                                         \
 379         }                                                            \
 380 } while (0)
 381
 382 static inline int class_devno_max(void)
 383 {
 384         return MAX_OBD_DEVICES;
 385 }
 386
 387 static inline int obd_get_info(struct obd_export *exp, __u32 keylen,
 388                                void *key, __u32 *vallen, void *val)
 389 {
 390         int rc;
 391         ENTRY;
 392
 393         EXP_CHECK_DT_OP(exp, get_info);
 394         EXP_COUNTER_INCREMENT(exp, get_info);
 395
 396         rc = OBP(exp->exp_obd, get_info)(exp, keylen, key, vallen, val);
 397         RETURN(rc);
 398 }
 399
 400 static inline int obd_set_info_async(struct obd_export *exp, obd_count keylen,
 401                                      void *key, obd_count vallen, void *val,
 402                                      struct ptlrpc_request_set *set)
 403 {
 404         int rc;
 405         ENTRY;
 406
 407         EXP_CHECK_DT_OP(exp, set_info_async);
 408         EXP_COUNTER_INCREMENT(exp, set_info_async);
 409
 410         rc = OBP(exp->exp_obd, set_info_async)(exp, keylen, key, vallen, val,
 411                                                set);
 412         RETURN(rc);
 413 }
 414
 415 #ifdef __KERNEL__
 416 #define DECLARE_LU_VARS(ldt, d)                 \
 417         struct lu_device_type *ldt;             \
 418         struct lu_device *d
 419 #else
 420 #define DECLARE_LU_VARS(ldt, d)                                 \
 421         extern void __placeholder_to_put_a_semicolon(void)
 422 #endif
 423 static inline int obd_setup(struct obd_device *obd, struct lustre_cfg *cfg)
 424 {
 425         int rc;
 426         DECLARE_LU_VARS(ldt, d);
 427         ENTRY;
 428
 429 #ifdef __KERNEL__
 430         ldt = obd->obd_type->typ_lu;
 431         if (ldt != NULL) {
 432                 struct lu_env env;
 433
 434                 rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
 435                 if (rc == 0) {
 436                         d = ldt->ldt_ops->ldto_device_alloc(&env, ldt, cfg);
 437                         lu_env_fini(&env);
 438                         if (!IS_ERR(d)) {
 439                                 obd->obd_lu_dev = d;
 440                                 d->ld_obd = obd;
 441                                 rc = 0;
 442                         } else
 443                                 rc = PTR_ERR(d);
 444                 }
 445         } else
 446 #endif
 447         {
 448                 OBD_CHECK_DT_OP(obd, setup, -EOPNOTSUPP);
 449                 OBD_COUNTER_INCREMENT(obd, setup);
 450                 rc = OBP(obd, setup)(obd, cfg);
 451         }
 452         RETURN(rc);
 453 }
 454
 455 static inline int obd_precleanup(struct obd_device *obd,
 456                                  enum obd_cleanup_stage cleanup_stage)
 457 {
 458         int rc;
 459         DECLARE_LU_VARS(ldt, d);
 460         ENTRY;
 461
 462         OBD_CHECK_DEV(obd);
 463 #ifdef __KERNEL__
 464         ldt = obd->obd_type->typ_lu;
 465         d = obd->obd_lu_dev;
 466         if (ldt != NULL) {
 467                 LASSERT(d != NULL);
 468                 if (cleanup_stage == OBD_CLEANUP_EXPORTS) {
 469                         struct lu_env env;
 470
 471                         rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
 472                         if (rc == 0) {
 473                                 ldt->ldt_ops->ldto_device_fini(&env, d);
 474                                 lu_env_fini(&env);
 475                         }
 476                 } else {
 477                         rc = 0;
 478                 }
 479         } else
 480 #endif
 481         {
 482                 OBD_CHECK_DT_OP(obd, precleanup, 0);
 483                 rc = OBP(obd, precleanup)(obd, cleanup_stage);
 484         }
 485
 486         OBD_COUNTER_INCREMENT(obd, precleanup);
 487         RETURN(rc);
 488 }
 489
 490 static inline int obd_cleanup(struct obd_device *obd)
 491 {
 492         int rc;
 493         DECLARE_LU_VARS(ldt, d);
 494         ENTRY;
 495
 496         OBD_CHECK_DEV(obd);
 497
 498 #ifdef __KERNEL__
 499         ldt = obd->obd_type->typ_lu;
 500         d = obd->obd_lu_dev;
 501         if (ldt != NULL) {
 502                 struct lu_env env;
 503                 LASSERT(d != NULL);
 504
 505                 rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
 506                 if (rc == 0) {
 507                         ldt->ldt_ops->ldto_device_free(&env, d);
 508                         lu_env_fini(&env);
 509                         obd->obd_lu_dev = NULL;
 510                 }
 511         } else
 512 #endif
 513         {
 514                 OBD_CHECK_DT_OP(obd, cleanup, 0);
 515                 rc = OBP(obd, cleanup)(obd);
 516         }
 517         OBD_COUNTER_INCREMENT(obd, cleanup);
 518         RETURN(rc);
 519 }
 520
 521 static inline int
 522 obd_process_config(struct obd_device *obd, int datalen, void *data)
 523 {
 524         int rc;
 525         DECLARE_LU_VARS(ldt, d);
 526         ENTRY;
 527
 528         OBD_CHECK_DEV(obd);
 529
 530 #ifdef __KERNEL__
 531         ldt = obd->obd_type->typ_lu;
 532         d = obd->obd_lu_dev;
 533         if (ldt != NULL && d != NULL) {
 534                 struct lu_env env;
 535
 536                 rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
 537                 if (rc == 0) {
 538                         rc = d->ld_ops->ldo_process_config(&env, d, data);
 539                         lu_env_fini(&env);
 540                 }
 541         } else
 542 #endif
 543         {
 544                 OBD_CHECK_DT_OP(obd, process_config, -EOPNOTSUPP);
 545                 rc = OBP(obd, process_config)(obd, datalen, data);
 546         }
 547         OBD_COUNTER_INCREMENT(obd, process_config);
 548
 549         RETURN(rc);
 550 }
 551
 552 /* Pack an in-memory MD struct for storage on disk.
 553  * Returns +ve size of packed MD (0 for free), or -ve error.
 554  *
 555  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 556  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 557  * If @*disk_tgt == NULL, it will be allocated
 558  */
 559 static inline int obd_packmd(struct obd_export *exp,
 560                              struct lov_mds_md **disk_tgt,
 561                              struct lov_stripe_md *mem_src)
 562 {
 563         int rc;
 564         ENTRY;
 565
 566         EXP_CHECK_DT_OP(exp, packmd);
 567         EXP_COUNTER_INCREMENT(exp, packmd);
 568
 569         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 570         RETURN(rc);
 571 }
 572
 573 static inline int obd_size_diskmd(struct obd_export *exp,
 574                                   struct lov_stripe_md *mem_src)
 575 {
 576         return obd_packmd(exp, NULL, mem_src);
 577 }
 578
 579 /* helper functions */
 580 static inline int obd_alloc_diskmd(struct obd_export *exp,
 581                                    struct lov_mds_md **disk_tgt)
 582 {
 583         LASSERT(disk_tgt);
 584         LASSERT(*disk_tgt == NULL);
 585         return obd_packmd(exp, disk_tgt, NULL);
 586 }
 587
 588 static inline int obd_free_diskmd(struct obd_export *exp,
 589                                   struct lov_mds_md **disk_tgt)
 590 {
 591         LASSERT(disk_tgt);
 592         LASSERT(*disk_tgt);
 593         return obd_packmd(exp, disk_tgt, NULL);
 594 }
 595
 596 /* Unpack an MD struct from disk to in-memory format.
 597  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 598  *
 599  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 600  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 601  * If @*mem_tgt == NULL, it will be allocated
 602  */
 603 static inline int obd_unpackmd(struct obd_export *exp,
 604                                struct lov_stripe_md **mem_tgt,
 605                                struct lov_mds_md *disk_src,
 606                                int disk_len)
 607 {
 608         int rc;
 609         ENTRY;
 610
 611         EXP_CHECK_DT_OP(exp, unpackmd);
 612         EXP_COUNTER_INCREMENT(exp, unpackmd);
 613
 614         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 615         RETURN(rc);
 616 }
 617
 618 /* helper functions */
 619 static inline int obd_alloc_memmd(struct obd_export *exp,
 620                                   struct lov_stripe_md **mem_tgt)
 621 {
 622         LASSERT(mem_tgt);
 623         LASSERT(*mem_tgt == NULL);
 624         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 625 }
 626
 627 static inline int obd_free_memmd(struct obd_export *exp,
 628                                  struct lov_stripe_md **mem_tgt)
 629 {
 630         LASSERT(mem_tgt);
 631         LASSERT(*mem_tgt);
 632         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 633 }
 634
 635 static inline int obd_checkmd(struct obd_export *exp,
 636                               struct obd_export *md_exp,
 637                               struct lov_stripe_md *mem_tgt)
 638 {
 639         int rc;
 640         ENTRY;
 641
 642         EXP_CHECK_DT_OP(exp, checkmd);
 643         EXP_COUNTER_INCREMENT(exp, checkmd);
 644
 645         rc = OBP(exp->exp_obd, checkmd)(exp, md_exp, mem_tgt);
 646         RETURN(rc);
 647 }
 648
 649 static inline int obd_precreate(struct obd_export *exp)
 650 {
 651         int rc;
 652         ENTRY;
 653
 654         EXP_CHECK_DT_OP(exp, precreate);
 655         OBD_COUNTER_INCREMENT(exp->exp_obd, precreate);
 656
 657         rc = OBP(exp->exp_obd, precreate)(exp);
 658         RETURN(rc);
 659 }
 660
 661 static inline int obd_create(struct obd_export *exp, struct obdo *obdo,
 662                              struct lov_stripe_md **ea,
 663                              struct obd_trans_info *oti)
 664 {
 665         int rc;
 666         ENTRY;
 667
 668         EXP_CHECK_DT_OP(exp, create);
 669         EXP_COUNTER_INCREMENT(exp, create);
 670
 671         rc = OBP(exp->exp_obd, create)(exp, obdo, ea, oti);
 672         RETURN(rc);
 673 }
 674
 675 static inline int obd_destroy(struct obd_export *exp, struct obdo *obdo,
 676                               struct lov_stripe_md *ea,
 677                               struct obd_trans_info *oti,
 678                               struct obd_export *md_exp)
 679 {
 680         int rc;
 681         ENTRY;
 682
 683         EXP_CHECK_DT_OP(exp, destroy);
 684         EXP_COUNTER_INCREMENT(exp, destroy);
 685
 686         rc = OBP(exp->exp_obd, destroy)(exp, obdo, ea, oti, md_exp);
 687         RETURN(rc);
 688 }
 689
 690 static inline int obd_getattr(struct obd_export *exp, struct obd_info *oinfo)
 691 {
 692         int rc;
 693         ENTRY;
 694
 695         EXP_CHECK_DT_OP(exp, getattr);
 696         EXP_COUNTER_INCREMENT(exp, getattr);
 697
 698         rc = OBP(exp->exp_obd, getattr)(exp, oinfo);
 699         RETURN(rc);
 700 }
 701
 702 static inline int obd_getattr_async(struct obd_export *exp,
 703                                     struct obd_info *oinfo,
 704                                     struct ptlrpc_request_set *set)
 705 {
 706         int rc;
 707         ENTRY;
 708
 709         EXP_CHECK_DT_OP(exp, getattr_async);
 710         EXP_COUNTER_INCREMENT(exp, getattr_async);
 711
 712         rc = OBP(exp->exp_obd, getattr_async)(exp, oinfo, set);
 713         RETURN(rc);
 714 }
 715
 716 static inline int obd_setattr(struct obd_export *exp, struct obd_info *oinfo,
 717                               struct obd_trans_info *oti)
 718 {
 719         int rc;
 720         ENTRY;
 721
 722         EXP_CHECK_DT_OP(exp, setattr);
 723         EXP_COUNTER_INCREMENT(exp, setattr);
 724
 725         rc = OBP(exp->exp_obd, setattr)(exp, oinfo, oti);
 726         RETURN(rc);
 727 }
 728
 729 /* This performs all the requests set init/wait/destroy actions. */
 730 static inline int obd_setattr_rqset(struct obd_export *exp,
 731                                     struct obd_info *oinfo,
 732                                     struct obd_trans_info *oti)
 733 {
 734         struct ptlrpc_request_set *set = NULL;
 735         int rc;
 736         ENTRY;
 737
 738         EXP_CHECK_DT_OP(exp, setattr_async);
 739         EXP_COUNTER_INCREMENT(exp, setattr_async);
 740
 741         set =  ptlrpc_prep_set();
 742         if (set == NULL)
 743                 RETURN(-ENOMEM);
 744
 745         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 746         if (rc == 0)
 747                 rc = ptlrpc_set_wait(set);
 748         ptlrpc_set_destroy(set);
 749         RETURN(rc);
 750 }
 751
 752 /* This adds all the requests into @set if @set != NULL, otherwise
 753    all requests are sent asynchronously without waiting for response. */
 754 static inline int obd_setattr_async(struct obd_export *exp,
 755                                     struct obd_info *oinfo,
 756                                     struct obd_trans_info *oti,
 757                                     struct ptlrpc_request_set *set)
 758 {
 759         int rc;
 760         ENTRY;
 761
 762         EXP_CHECK_DT_OP(exp, setattr_async);
 763         EXP_COUNTER_INCREMENT(exp, setattr_async);
 764
 765         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 766         RETURN(rc);
 767 }
 768
 769 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 770                                int priority)
 771 {
 772         struct obd_device *obd = imp->imp_obd;
 773         int rc;
 774         ENTRY;
 775
 776         OBD_CHECK_DEV_ACTIVE(obd);
 777         OBD_CHECK_DT_OP(obd, add_conn, -EOPNOTSUPP);
 778         OBD_COUNTER_INCREMENT(obd, add_conn);
 779
 780         rc = OBP(obd, add_conn)(imp, uuid, priority);
 781         RETURN(rc);
 782 }
 783
 784 static inline int obd_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
 785 {
 786         struct obd_device *obd = imp->imp_obd;
 787         int rc;
 788         ENTRY;
 789
 790         OBD_CHECK_DEV_ACTIVE(obd);
 791         OBD_CHECK_DT_OP(obd, del_conn, -EOPNOTSUPP);
 792         OBD_COUNTER_INCREMENT(obd, del_conn);
 793
 794         rc = OBP(obd, del_conn)(imp, uuid);
 795         RETURN(rc);
 796 }
 797
 798 static inline int obd_connect(const struct lu_env *env,
 799                               struct lustre_handle *conn,struct obd_device *obd,
 800                               struct obd_uuid *cluuid,
 801                               struct obd_connect_data *d,
 802                               void *localdata)
 803 {
 804         int rc;
 805 #ifdef LIBCFS_DEBUG
 806         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 807                                                    * check */
 808 #endif
 809         ENTRY;
 810
 811         OBD_CHECK_DEV_ACTIVE(obd);
 812         OBD_CHECK_DT_OP(obd, connect, -EOPNOTSUPP);
 813         OBD_COUNTER_INCREMENT(obd, connect);
 814
 815         rc = OBP(obd, connect)(env, conn, obd, cluuid, d, localdata);
 816         /* check that only subset is granted */
 817         LASSERT(ergo(d != NULL,
 818                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 819         RETURN(rc);
 820 }
 821
 822 static inline int obd_reconnect(const struct lu_env *env,
 823                                 struct obd_export *exp,
 824                                 struct obd_device *obd,
 825                                 struct obd_uuid *cluuid,
 826                                 struct obd_connect_data *d)
 827 {
 828         int rc;
 829 #ifdef LIBCFS_DEBUG
 830         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 831                                                    * check */
 832 #endif
 833
 834         ENTRY;
 835
 836         OBD_CHECK_DEV_ACTIVE(obd);
 837         OBD_CHECK_DT_OP(obd, reconnect, 0);
 838         OBD_COUNTER_INCREMENT(obd, reconnect);
 839
 840         rc = OBP(obd, reconnect)(env, exp, obd, cluuid, d);
 841         /* check that only subset is granted */
 842         LASSERT(ergo(d != NULL,
 843                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 844         RETURN(rc);
 845 }
 846
 847 static inline int obd_disconnect(struct obd_export *exp)
 848 {
 849         int rc;
 850         ENTRY;
 851
 852         EXP_CHECK_DT_OP(exp, disconnect);
 853         EXP_COUNTER_INCREMENT(exp, disconnect);
 854
 855         rc = OBP(exp->exp_obd, disconnect)(exp);
 856         RETURN(rc);
 857 }
 858
 859 static inline int obd_fid_init(struct obd_export *exp)
 860 {
 861         int rc;
 862         ENTRY;
 863
 864         OBD_CHECK_DT_OP(exp->exp_obd, fid_init, 0);
 865         EXP_COUNTER_INCREMENT(exp, fid_init);
 866
 867         rc = OBP(exp->exp_obd, fid_init)(exp);
 868         RETURN(rc);
 869 }
 870
 871 static inline int obd_fid_fini(struct obd_export *exp)
 872 {
 873         int rc;
 874         ENTRY;
 875
 876         OBD_CHECK_DT_OP(exp->exp_obd, fid_fini, 0);
 877         EXP_COUNTER_INCREMENT(exp, fid_fini);
 878
 879         rc = OBP(exp->exp_obd, fid_fini)(exp);
 880         RETURN(rc);
 881 }
 882
 883 static inline int obd_fid_alloc(struct obd_export *exp,
 884                                 struct lu_fid *fid,
 885                                 struct md_op_data *op_data)
 886 {
 887         int rc;
 888         ENTRY;
 889
 890         EXP_CHECK_DT_OP(exp, fid_alloc);
 891         EXP_COUNTER_INCREMENT(exp, fid_alloc);
 892
 893         rc = OBP(exp->exp_obd, fid_alloc)(exp, fid, op_data);
 894         RETURN(rc);
 895 }
 896
 897 static inline int obd_fid_delete(struct obd_export *exp,
 898                                  const struct lu_fid *fid)
 899 {
 900         int rc;
 901         ENTRY;
 902
 903         EXP_CHECK_DT_OP(exp, fid_delete);
 904         EXP_COUNTER_INCREMENT(exp, fid_delete);
 905
 906         rc = OBP(exp->exp_obd, fid_delete)(exp, fid);
 907         RETURN(rc);
 908 }
 909
 910 static inline int obd_ping(struct obd_export *exp)
 911 {
 912         int rc;
 913         ENTRY;
 914
 915         OBD_CHECK_DT_OP(exp->exp_obd, ping, 0);
 916         EXP_COUNTER_INCREMENT(exp, ping);
 917
 918         rc = OBP(exp->exp_obd, ping)(exp);
 919         RETURN(rc);
 920 }
 921
 922 static inline int obd_init_export(struct obd_export *exp)
 923 {
 924         int rc = 0;
 925
 926         ENTRY;
 927         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 928             OBP((exp)->exp_obd, init_export))
 929                 rc = OBP(exp->exp_obd, init_export)(exp);
 930         RETURN(rc);
 931 }
 932
 933 static inline int obd_destroy_export(struct obd_export *exp)
 934 {
 935         ENTRY;
 936         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 937             OBP((exp)->exp_obd, destroy_export))
 938                 OBP(exp->exp_obd, destroy_export)(exp);
 939         RETURN(0);
 940 }
 941
 942 static inline int obd_extent_calc(struct obd_export *exp,
 943                                   struct lov_stripe_md *md,
 944                                   int cmd, obd_off *offset)
 945 {
 946         int rc;
 947         ENTRY;
 948         EXP_CHECK_DT_OP(exp, extent_calc);
 949         rc = OBP(exp->exp_obd, extent_calc)(exp, md, cmd, offset);
 950         RETURN(rc);
 951 }
 952
 953 static inline struct dentry *
 954 obd_lvfs_fid2dentry(struct obd_export *exp, __u64 id_ino, __u32 gen, __u64 gr)
 955 {
 956         LASSERT(exp->exp_obd);
 957
 958         return lvfs_fid2dentry(&exp->exp_obd->obd_lvfs_ctxt, id_ino, gen, gr,
 959                                exp->exp_obd);
 960 }
 961
 962 static inline int
 963 obd_lvfs_open_llog(struct obd_export *exp, __u64 id_ino, struct dentry *dentry)
 964 {
 965         LASSERT(exp->exp_obd);
 966         CERROR("FIXME what's the story here?  This needs to be an obd fn?\n");
 967 #if 0
 968         return lvfs_open_llog(&exp->exp_obd->obd_lvfs_ctxt, id_ino,
 969                               dentry, exp->exp_obd);
 970 #endif
 971         return 0;
 972 }
 973
 974 #ifndef time_before
 975 #define time_before(t1, t2) ((long)t2 - (long)t1 > 0)
 976 #endif
 977
 978 /* @max_age is the oldest time in jiffies that we accept using a cached data.
 979  * If the cache is older than @max_age we will get a new value from the
 980  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
 981 static inline int obd_statfs_async(struct obd_device *obd,
 982                                    struct obd_info *oinfo,
 983                                    __u64 max_age,
 984                                    struct ptlrpc_request_set *rqset)
 985 {
 986         int rc = 0;
 987         ENTRY;
 988
 989         if (obd == NULL)
 990                 RETURN(-EINVAL);
 991
 992         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
 993         OBD_COUNTER_INCREMENT(obd, statfs);
 994
 995         CDEBUG(D_SUPER, "%s: osfs %p age "LPU64", max_age "LPU64"\n",
 996                obd->obd_name, &obd->obd_osfs, obd->obd_osfs_age, max_age);
 997         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
 998                 rc = OBP(obd, statfs_async)(obd, oinfo, max_age, rqset);
 999         } else {
1000                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1001                        " objects "LPU64"/"LPU64"\n",
1002                        obd->obd_name, &obd->obd_osfs,
1003                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1004                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1005                 spin_lock(&obd->obd_osfs_lock);
1006                 memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
1007                 spin_unlock(&obd->obd_osfs_lock);
1008                 if (oinfo->oi_cb_up)
1009                         oinfo->oi_cb_up(oinfo, 0);
1010         }
1011         RETURN(rc);
1012 }
1013
1014 static inline int obd_statfs_rqset(struct obd_device *obd,
1015                                    struct obd_statfs *osfs, __u64 max_age,
1016                                    __u32 flags)
1017 {
1018         struct ptlrpc_request_set *set = NULL;
1019         struct obd_info oinfo = { { { 0 } } };
1020         int rc = 0;
1021         ENTRY;
1022
1023         set =  ptlrpc_prep_set();
1024         if (set == NULL)
1025                 RETURN(-ENOMEM);
1026
1027         oinfo.oi_osfs = osfs;
1028         oinfo.oi_flags = flags;
1029         rc = obd_statfs_async(obd, &oinfo, max_age, set);
1030         if (rc == 0)
1031                 rc = ptlrpc_set_wait(set);
1032         ptlrpc_set_destroy(set);
1033         RETURN(rc);
1034 }
1035
1036 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1037  * If the cache is older than @max_age we will get a new value from the
1038  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1039 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
1040                              __u64 max_age, __u32 flags)
1041 {
1042         int rc = 0;
1043         ENTRY;
1044
1045         if (obd == NULL)
1046                 RETURN(-EINVAL);
1047
1048         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1049         OBD_COUNTER_INCREMENT(obd, statfs);
1050
1051         CDEBUG(D_SUPER, "osfs "LPU64", max_age "LPU64"\n",
1052                obd->obd_osfs_age, max_age);
1053         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1054                 rc = OBP(obd, statfs)(obd, osfs, max_age, flags);
1055                 if (rc == 0) {
1056                         spin_lock(&obd->obd_osfs_lock);
1057                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
1058                         obd->obd_osfs_age = cfs_time_current_64();
1059                         spin_unlock(&obd->obd_osfs_lock);
1060                 }
1061         } else {
1062                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1063                        " objects "LPU64"/"LPU64"\n",
1064                        obd->obd_name, &obd->obd_osfs,
1065                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1066                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1067                 spin_lock(&obd->obd_osfs_lock);
1068                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
1069                 spin_unlock(&obd->obd_osfs_lock);
1070         }
1071         RETURN(rc);
1072 }
1073
1074 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
1075                            struct lov_stripe_md *ea, obd_size start,
1076                            obd_size end, void *capa)
1077 {
1078         int rc;
1079         ENTRY;
1080
1081         OBD_CHECK_DT_OP(exp->exp_obd, sync, -EOPNOTSUPP);
1082         EXP_COUNTER_INCREMENT(exp, sync);
1083
1084         rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end, capa);
1085         RETURN(rc);
1086 }
1087
1088 static inline int obd_punch_rqset(struct obd_export *exp,
1089                                   struct obd_info *oinfo,
1090                                   struct obd_trans_info *oti)
1091 {
1092         struct ptlrpc_request_set *set = NULL;
1093         int rc;
1094         ENTRY;
1095
1096         EXP_CHECK_DT_OP(exp, punch);
1097         EXP_COUNTER_INCREMENT(exp, punch);
1098
1099         set =  ptlrpc_prep_set();
1100         if (set == NULL)
1101                 RETURN(-ENOMEM);
1102
1103         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, set);
1104         if (rc == 0)
1105                 rc = ptlrpc_set_wait(set);
1106         ptlrpc_set_destroy(set);
1107         RETURN(rc);
1108 }
1109
1110 static inline int obd_punch(struct obd_export *exp, struct obd_info *oinfo,
1111                             struct obd_trans_info *oti,
1112                             struct ptlrpc_request_set *rqset)
1113 {
1114         int rc;
1115         ENTRY;
1116
1117         EXP_CHECK_DT_OP(exp, punch);
1118         EXP_COUNTER_INCREMENT(exp, punch);
1119
1120         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, rqset);
1121         RETURN(rc);
1122 }
1123
1124 static inline int obd_brw(int cmd, struct obd_export *exp,
1125                           struct obd_info *oinfo, obd_count oa_bufs,
1126                           struct brw_page *pg, struct obd_trans_info *oti)
1127 {
1128         int rc;
1129         ENTRY;
1130
1131         EXP_CHECK_DT_OP(exp, brw);
1132         EXP_COUNTER_INCREMENT(exp, brw);
1133
1134         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
1135                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
1136                        "or OBD_BRW_CHECK\n");
1137                 LBUG();
1138         }
1139
1140         rc = OBP(exp->exp_obd, brw)(cmd, exp, oinfo, oa_bufs, pg, oti);
1141         RETURN(rc);
1142 }
1143
1144 static inline int obd_brw_async(int cmd, struct obd_export *exp,
1145                                 struct obd_info *oinfo, obd_count oa_bufs,
1146                                 struct brw_page *pg, struct obd_trans_info *oti,
1147                                 struct ptlrpc_request_set *set)
1148 {
1149         int rc;
1150         ENTRY;
1151
1152         EXP_CHECK_DT_OP(exp, brw_async);
1153         EXP_COUNTER_INCREMENT(exp, brw_async);
1154
1155         if (!(cmd & OBD_BRW_RWMASK)) {
1156                 CERROR("obd_brw: cmd must be OBD_BRW_READ or OBD_BRW_WRITE\n");
1157                 LBUG();
1158         }
1159
1160         rc = OBP(exp->exp_obd, brw_async)(cmd, exp, oinfo, oa_bufs, pg,oti,set);
1161         RETURN(rc);
1162 }
1163
1164 static inline int obd_brw_rqset(int cmd, struct obd_export *exp,
1165                                 struct obdo *oa, struct lov_stripe_md *lsm,
1166                                 obd_count oa_bufs, struct brw_page *pg,
1167                                 struct obd_trans_info *oti,
1168                                 struct obd_capa *ocapa)
1169 {
1170         struct ptlrpc_request_set *set = NULL;
1171         struct obd_info oinfo = { { { 0 } } };
1172         int rc = 0;
1173         ENTRY;
1174
1175         set =  ptlrpc_prep_set();
1176         if (set == NULL)
1177                 RETURN(-ENOMEM);
1178
1179         oinfo.oi_oa = oa;
1180         oinfo.oi_md = lsm;
1181         oinfo.oi_capa = ocapa;
1182         rc = obd_brw_async(cmd, exp, &oinfo, oa_bufs, pg, oti, set);
1183         if (rc == 0) {
1184                 rc = ptlrpc_set_wait(set);
1185                 if (rc)
1186                         CERROR("error from callback: rc = %d\n", rc);
1187         } else {
1188                 CDEBUG(rc == -ENOSPC ? D_INODE : D_ERROR,
1189                        "error from obd_brw_async: rc = %d\n", rc);
1190         }
1191         ptlrpc_set_destroy(set);
1192         RETURN(rc);
1193 }
1194
1195 static inline  int obd_prep_async_page(struct obd_export *exp,
1196                                        struct lov_stripe_md *lsm,
1197                                        struct lov_oinfo *loi,
1198                                        cfs_page_t *page, obd_off offset,
1199                                        struct obd_async_page_ops *ops,
1200                                        void *data, void **res, int nocache,
1201                                        struct lustre_handle *lockh)
1202 {
1203         int ret;
1204         ENTRY;
1205
1206         EXP_CHECK_DT_OP(exp, prep_async_page);
1207         EXP_COUNTER_INCREMENT(exp, prep_async_page);
1208
1209         ret = OBP(exp->exp_obd, prep_async_page)(exp, lsm, loi, page, offset,
1210                                                  ops, data, res, nocache,
1211                                                  lockh);
1212         RETURN(ret);
1213 }
1214
1215 static inline int obd_reget_short_lock(struct obd_export *exp,
1216                                        struct lov_stripe_md *lsm,
1217                                        void **res, int rw,
1218                                        obd_off start, obd_off end,
1219                                        void **cookie)
1220 {
1221         ENTRY;
1222
1223         EXP_CHECK_DT_OP(exp, reget_short_lock);
1224         EXP_COUNTER_INCREMENT(exp, reget_short_lock);
1225
1226         RETURN(OBP(exp->exp_obd, reget_short_lock)(exp, lsm, res, rw,
1227                                                    start, end, cookie));
1228 }
1229
1230 static inline int obd_release_short_lock(struct obd_export *exp,
1231                                          struct lov_stripe_md *lsm, obd_off end,
1232                                          void *cookie, int rw)
1233 {
1234         ENTRY;
1235
1236         EXP_CHECK_DT_OP(exp, release_short_lock);
1237         EXP_COUNTER_INCREMENT(exp, release_short_lock);
1238
1239         RETURN(OBP(exp->exp_obd, release_short_lock)(exp, lsm, end,
1240                                                      cookie, rw));
1241 }
1242
1243 static inline int obd_queue_async_io(struct obd_export *exp,
1244                                      struct lov_stripe_md *lsm,
1245                                      struct lov_oinfo *loi, void *cookie,
1246                                      int cmd, obd_off off, int count,
1247                                      obd_flag brw_flags, obd_flag async_flags)
1248 {
1249         int rc;
1250         ENTRY;
1251
1252         EXP_CHECK_DT_OP(exp, queue_async_io);
1253         EXP_COUNTER_INCREMENT(exp, queue_async_io);
1254         LASSERT(cmd & OBD_BRW_RWMASK);
1255
1256         rc = OBP(exp->exp_obd, queue_async_io)(exp, lsm, loi, cookie, cmd, off,
1257                                                count, brw_flags, async_flags);
1258         RETURN(rc);
1259 }
1260
1261 static inline int obd_set_async_flags(struct obd_export *exp,
1262                                       struct lov_stripe_md *lsm,
1263                                       struct lov_oinfo *loi, void *cookie,
1264                                       obd_flag async_flags)
1265 {
1266         int rc;
1267         ENTRY;
1268
1269         EXP_CHECK_DT_OP(exp, set_async_flags);
1270         EXP_COUNTER_INCREMENT(exp, set_async_flags);
1271
1272         rc = OBP(exp->exp_obd, set_async_flags)(exp, lsm, loi, cookie,
1273                                                 async_flags);
1274         RETURN(rc);
1275 }
1276
1277 static inline int obd_queue_group_io(struct obd_export *exp,
1278                                      struct lov_stripe_md *lsm,
1279                                      struct lov_oinfo *loi,
1280                                      struct obd_io_group *oig,
1281                                      void *cookie, int cmd, obd_off off,
1282                                      int count, obd_flag brw_flags,
1283                                      obd_flag async_flags)
1284 {
1285         int rc;
1286         ENTRY;
1287
1288         EXP_CHECK_DT_OP(exp, queue_group_io);
1289         EXP_COUNTER_INCREMENT(exp, queue_group_io);
1290         LASSERT(cmd & OBD_BRW_RWMASK);
1291
1292         rc = OBP(exp->exp_obd, queue_group_io)(exp, lsm, loi, oig, cookie,
1293                                                cmd, off, count, brw_flags,
1294                                                async_flags);
1295         RETURN(rc);
1296 }
1297
1298 static inline int obd_trigger_group_io(struct obd_export *exp,
1299                                        struct lov_stripe_md *lsm,
1300                                        struct lov_oinfo *loi,
1301                                        struct obd_io_group *oig)
1302 {
1303         int rc;
1304         ENTRY;
1305
1306         EXP_CHECK_DT_OP(exp, trigger_group_io);
1307         EXP_COUNTER_INCREMENT(exp, trigger_group_io);
1308
1309         rc = OBP(exp->exp_obd, trigger_group_io)(exp, lsm, loi, oig);
1310         RETURN(rc);
1311 }
1312
1313 static inline int obd_teardown_async_page(struct obd_export *exp,
1314                                           struct lov_stripe_md *lsm,
1315                                           struct lov_oinfo *loi, void *cookie)
1316 {
1317         int rc;
1318         ENTRY;
1319
1320         EXP_CHECK_DT_OP(exp, teardown_async_page);
1321         EXP_COUNTER_INCREMENT(exp, teardown_async_page);
1322
1323         rc = OBP(exp->exp_obd, teardown_async_page)(exp, lsm, loi, cookie);
1324         RETURN(rc);
1325 }
1326
1327 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
1328                              int objcount, struct obd_ioobj *obj,
1329                              int niocount, struct niobuf_remote *remote,
1330                              struct niobuf_local *local,
1331                              struct obd_trans_info *oti,
1332                              struct lustre_capa *capa)
1333 {
1334         int rc;
1335         ENTRY;
1336
1337         EXP_CHECK_DT_OP(exp, preprw);
1338         EXP_COUNTER_INCREMENT(exp, preprw);
1339
1340         rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, niocount,
1341                                        remote, local, oti, capa);
1342         RETURN(rc);
1343 }
1344
1345 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
1346                                int objcount, struct obd_ioobj *obj,
1347                                int niocount, struct niobuf_local *local,
1348                                struct obd_trans_info *oti, int rc)
1349 {
1350         ENTRY;
1351
1352         EXP_CHECK_DT_OP(exp, commitrw);
1353         EXP_COUNTER_INCREMENT(exp, commitrw);
1354
1355         rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj, niocount,
1356                                          local, oti, rc);
1357         RETURN(rc);
1358 }
1359
1360 static inline int obd_merge_lvb(struct obd_export *exp,
1361                                 struct lov_stripe_md *lsm,
1362                                 struct ost_lvb *lvb, int kms_only)
1363 {
1364         int rc;
1365         ENTRY;
1366
1367         EXP_CHECK_DT_OP(exp, merge_lvb);
1368         EXP_COUNTER_INCREMENT(exp, merge_lvb);
1369
1370         rc = OBP(exp->exp_obd, merge_lvb)(exp, lsm, lvb, kms_only);
1371         RETURN(rc);
1372 }
1373
1374 static inline int obd_adjust_kms(struct obd_export *exp,
1375                                  struct lov_stripe_md *lsm, obd_off size,
1376                                  int shrink)
1377 {
1378         int rc;
1379         ENTRY;
1380
1381         EXP_CHECK_DT_OP(exp, adjust_kms);
1382         EXP_COUNTER_INCREMENT(exp, adjust_kms);
1383
1384         rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
1385         RETURN(rc);
1386 }
1387
1388 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1389                                 int len, void *karg, void *uarg)
1390 {
1391         int rc;
1392         ENTRY;
1393
1394         EXP_CHECK_DT_OP(exp, iocontrol);
1395         EXP_COUNTER_INCREMENT(exp, iocontrol);
1396
1397         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1398         RETURN(rc);
1399 }
1400
1401 static inline int obd_enqueue_rqset(struct obd_export *exp,
1402                                     struct obd_info *oinfo,
1403                                     struct ldlm_enqueue_info *einfo)
1404 {
1405         struct ptlrpc_request_set *set = NULL;
1406         int rc;
1407         ENTRY;
1408
1409         EXP_CHECK_DT_OP(exp, enqueue);
1410         EXP_COUNTER_INCREMENT(exp, enqueue);
1411
1412         set =  ptlrpc_prep_set();
1413         if (set == NULL)
1414                 RETURN(-ENOMEM);
1415
1416         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1417         if (rc == 0)
1418                 rc = ptlrpc_set_wait(set);
1419         ptlrpc_set_destroy(set);
1420         RETURN(rc);
1421 }
1422
1423 static inline int obd_enqueue(struct obd_export *exp,
1424                               struct obd_info *oinfo,
1425                               struct ldlm_enqueue_info *einfo,
1426                               struct ptlrpc_request_set *set)
1427 {
1428         int rc;
1429         ENTRY;
1430
1431         EXP_CHECK_DT_OP(exp, enqueue);
1432         EXP_COUNTER_INCREMENT(exp, enqueue);
1433
1434         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1435         RETURN(rc);
1436 }
1437
1438 static inline int obd_match(struct obd_export *exp, struct lov_stripe_md *ea,
1439                             __u32 type, ldlm_policy_data_t *policy, __u32 mode,
1440                             int *flags, void *data, struct lustre_handle *lockh)
1441 {
1442         int rc;
1443         ENTRY;
1444
1445         EXP_CHECK_DT_OP(exp, match);
1446         EXP_COUNTER_INCREMENT(exp, match);
1447
1448         rc = OBP(exp->exp_obd, match)(exp, ea, type, policy, mode, flags, data,
1449                                       lockh);
1450         RETURN(rc);
1451 }
1452
1453 static inline int obd_change_cbdata(struct obd_export *exp,
1454                                     struct lov_stripe_md *lsm,
1455                                     ldlm_iterator_t it, void *data)
1456 {
1457         int rc;
1458         ENTRY;
1459
1460         EXP_CHECK_DT_OP(exp, change_cbdata);
1461         EXP_COUNTER_INCREMENT(exp, change_cbdata);
1462
1463         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1464         RETURN(rc);
1465 }
1466
1467 static inline int obd_cancel(struct obd_export *exp,
1468                              struct lov_stripe_md *ea, __u32 mode,
1469                              struct lustre_handle *lockh)
1470 {
1471         int rc;
1472         ENTRY;
1473
1474         EXP_CHECK_DT_OP(exp, cancel);
1475         EXP_COUNTER_INCREMENT(exp, cancel);
1476
1477         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1478         RETURN(rc);
1479 }
1480
1481 static inline int obd_cancel_unused(struct obd_export *exp,
1482                                     struct lov_stripe_md *ea,
1483                                     int flags, void *opaque)
1484 {
1485         int rc;
1486         ENTRY;
1487
1488         EXP_CHECK_DT_OP(exp, cancel_unused);
1489         EXP_COUNTER_INCREMENT(exp, cancel_unused);
1490
1491         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1492         RETURN(rc);
1493 }
1494
1495 static inline int obd_join_lru(struct obd_export *exp,
1496                                struct lov_stripe_md *ea, int join)
1497 {
1498         int rc;
1499         ENTRY;
1500
1501         EXP_CHECK_DT_OP(exp, join_lru);
1502         EXP_COUNTER_INCREMENT(exp, join_lru);
1503
1504         rc = OBP(exp->exp_obd, join_lru)(exp, ea, join);
1505         RETURN(rc);
1506 }
1507
1508 static inline int obd_pin(struct obd_export *exp, const struct lu_fid *fid,
1509                           struct obd_capa *oc, struct obd_client_handle *handle,
1510                           int flag)
1511 {
1512         int rc;
1513         ENTRY;
1514
1515         EXP_CHECK_DT_OP(exp, pin);
1516         EXP_COUNTER_INCREMENT(exp, pin);
1517
1518         rc = OBP(exp->exp_obd, pin)(exp, fid, oc, handle, flag);
1519         RETURN(rc);
1520 }
1521
1522 static inline int obd_unpin(struct obd_export *exp,
1523                             struct obd_client_handle *handle, int flag)
1524 {
1525         int rc;
1526         ENTRY;
1527
1528         EXP_CHECK_DT_OP(exp, unpin);
1529         EXP_COUNTER_INCREMENT(exp, unpin);
1530
1531         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1532         RETURN(rc);
1533 }
1534
1535
1536 static inline void obd_import_event(struct obd_device *obd,
1537                                     struct obd_import *imp,
1538                                     enum obd_import_event event)
1539 {
1540         ENTRY;
1541         if (!obd) {
1542                 CERROR("NULL device\n");
1543                 EXIT;
1544                 return;
1545         }
1546         if (obd->obd_set_up && OBP(obd, import_event)) {
1547                 OBD_COUNTER_INCREMENT(obd, import_event);
1548                 OBP(obd, import_event)(obd, imp, event);
1549         }
1550         EXIT;
1551 }
1552
1553 static inline int obd_llog_connect(struct obd_export *exp,
1554                                    struct llogd_conn_body *body)
1555 {
1556         int rc;
1557         ENTRY;
1558
1559         OBD_CHECK_DT_OP(exp->exp_obd, llog_connect, 0);
1560         EXP_COUNTER_INCREMENT(exp, llog_connect);
1561
1562         rc = OBP(exp->exp_obd, llog_connect)(exp, body);
1563         RETURN(rc);
1564 }
1565
1566
1567 static inline int obd_notify(struct obd_device *obd,
1568                              struct obd_device *watched,
1569                              enum obd_notify_event ev,
1570                              void *data)
1571 {
1572         int rc;
1573         ENTRY;
1574         OBD_CHECK_DEV(obd);
1575
1576         /* the check for async_recov is a complete hack - I'm hereby
1577            overloading the meaning to also mean "this was called from
1578            mds_postsetup".  I know that my mds is able to handle notifies
1579            by this point, and it needs to get them to execute mds_postrecov. */
1580         if (!obd->obd_set_up && !obd->obd_async_recov) {
1581                 CDEBUG(D_HA, "obd %s not set up\n", obd->obd_name);
1582                 RETURN(-EINVAL);
1583         }
1584
1585         if (!OBP(obd, notify)) {
1586                 CERROR("obd %s has no notify handler\n", obd->obd_name);
1587                 RETURN(-ENOSYS);
1588         }
1589
1590         OBD_COUNTER_INCREMENT(obd, notify);
1591         rc = OBP(obd, notify)(obd, watched, ev, data);
1592         RETURN(rc);
1593 }
1594
1595 static inline int obd_notify_observer(struct obd_device *observer,
1596                                       struct obd_device *observed,
1597                                       enum obd_notify_event ev,
1598                                       void *data)
1599 {
1600         int rc1;
1601         int rc2;
1602
1603         struct obd_notify_upcall *onu;
1604
1605         if (observer->obd_observer)
1606                 rc1 = obd_notify(observer->obd_observer, observed, ev, data);
1607         else
1608                 rc1 = 0;
1609         /*
1610          * Also, call non-obd listener, if any
1611          */
1612         onu = &observer->obd_upcall;
1613         if (onu->onu_upcall != NULL)
1614                 rc2 = onu->onu_upcall(observer, observed, ev, onu->onu_owner);
1615         else
1616                 rc2 = 0;
1617
1618         return rc1 ? rc1 : rc2;
1619 }
1620
1621 static inline int obd_quotacheck(struct obd_export *exp,
1622                                  struct obd_quotactl *oqctl)
1623 {
1624         int rc;
1625         ENTRY;
1626
1627         EXP_CHECK_DT_OP(exp, quotacheck);
1628         EXP_COUNTER_INCREMENT(exp, quotacheck);
1629
1630         rc = OBP(exp->exp_obd, quotacheck)(exp, oqctl);
1631         RETURN(rc);
1632 }
1633
1634 static inline int obd_quotactl(struct obd_export *exp,
1635                                struct obd_quotactl *oqctl)
1636 {
1637         int rc;
1638         ENTRY;
1639
1640         EXP_CHECK_DT_OP(exp, quotactl);
1641         EXP_COUNTER_INCREMENT(exp, quotactl);
1642
1643         rc = OBP(exp->exp_obd, quotactl)(exp, oqctl);
1644         RETURN(rc);
1645 }
1646
1647 static inline int obd_health_check(struct obd_device *obd)
1648 {
1649         /* returns: 0 on healthy
1650          *         >0 on unhealthy + reason code/flag
1651          *            however the only suppored reason == 1 right now
1652          *            We'll need to define some better reasons
1653          *            or flags in the future.
1654          *         <0 on error
1655          */
1656         int rc;
1657         ENTRY;
1658
1659         /* don't use EXP_CHECK_DT_OP, because NULL method is normal here */
1660         if (obd == NULL || !OBT(obd)) {
1661                 CERROR("cleaned up obd\n");
1662                 RETURN(-EOPNOTSUPP);
1663         }
1664         if (!obd->obd_set_up || obd->obd_stopping)
1665                 RETURN(0);
1666         if (!OBP(obd, health_check))
1667                 RETURN(0);
1668
1669         rc = OBP(obd, health_check)(obd);
1670         RETURN(rc);
1671 }
1672
1673 static inline int obd_register_observer(struct obd_device *obd,
1674                                         struct obd_device *observer)
1675 {
1676         ENTRY;
1677         OBD_CHECK_DEV(obd);
1678         if (obd->obd_observer && observer)
1679                 RETURN(-EALREADY);
1680         obd->obd_observer = observer;
1681         RETURN(0);
1682 }
1683
1684 static inline int obd_register_page_removal_cb(struct obd_export *exp,
1685                                                obd_page_removal_cb_t cb,
1686                                                obd_pin_extent_cb pin_cb)
1687 {
1688         int rc;
1689         ENTRY;
1690
1691         OBD_CHECK_DT_OP(exp->exp_obd, register_page_removal_cb, 0);
1692         OBD_COUNTER_INCREMENT(exp->exp_obd, register_page_removal_cb);
1693
1694         rc = OBP(exp->exp_obd, register_page_removal_cb)(exp, cb, pin_cb);
1695         RETURN(rc);
1696 }
1697
1698 static inline int obd_unregister_page_removal_cb(struct obd_export *exp,
1699                                                  obd_page_removal_cb_t cb)
1700 {
1701         int rc;
1702         ENTRY;
1703
1704         OBD_CHECK_DT_OP(exp->exp_obd, unregister_page_removal_cb, 0);
1705         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_page_removal_cb);
1706
1707         rc = OBP(exp->exp_obd, unregister_page_removal_cb)(exp, cb);
1708         RETURN(rc);
1709 }
1710
1711 static inline int obd_register_lock_cancel_cb(struct obd_export *exp,
1712                                               obd_lock_cancel_cb cb)
1713 {
1714         int rc;
1715         ENTRY;
1716
1717         OBD_CHECK_DT_OP(exp->exp_obd, register_lock_cancel_cb, 0);
1718         OBD_COUNTER_INCREMENT(exp->exp_obd, register_lock_cancel_cb);
1719
1720         rc = OBP(exp->exp_obd, register_lock_cancel_cb)(exp, cb);
1721         RETURN(rc);
1722 }
1723
1724 static inline int obd_unregister_lock_cancel_cb(struct obd_export *exp,
1725                                                  obd_lock_cancel_cb cb)
1726 {
1727         int rc;
1728         ENTRY;
1729
1730         OBD_CHECK_DT_OP(exp->exp_obd, unregister_lock_cancel_cb, 0);
1731         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_lock_cancel_cb);
1732
1733         rc = OBP(exp->exp_obd, unregister_lock_cancel_cb)(exp, cb);
1734         RETURN(rc);
1735 }
1736
1737 /* metadata helpers */
1738 static inline int md_getstatus(struct obd_export *exp,
1739                                struct lu_fid *fid, struct obd_capa **pc)
1740 {
1741         int rc;
1742         ENTRY;
1743
1744         EXP_CHECK_MD_OP(exp, getstatus);
1745         EXP_MD_COUNTER_INCREMENT(exp, getstatus);
1746         rc = MDP(exp->exp_obd, getstatus)(exp, fid, pc);
1747         RETURN(rc);
1748 }
1749
1750 static inline int md_getattr(struct obd_export *exp, const struct lu_fid *fid,
1751                              struct obd_capa *oc, obd_valid valid, int ea_size,
1752                              struct ptlrpc_request **request)
1753 {
1754         int rc;
1755         ENTRY;
1756         EXP_CHECK_MD_OP(exp, getattr);
1757         EXP_MD_COUNTER_INCREMENT(exp, getattr);
1758         rc = MDP(exp->exp_obd, getattr)(exp, fid, oc, valid,
1759                                         ea_size, request);
1760         RETURN(rc);
1761 }
1762
1763 static inline int md_change_cbdata(struct obd_export *exp,
1764                                    const struct lu_fid *fid,
1765                                    ldlm_iterator_t it, void *data)
1766 {
1767         int rc;
1768         ENTRY;
1769         EXP_CHECK_MD_OP(exp, change_cbdata);
1770         EXP_MD_COUNTER_INCREMENT(exp, change_cbdata);
1771         rc = MDP(exp->exp_obd, change_cbdata)(exp, fid, it, data);
1772         RETURN(rc);
1773 }
1774
1775 static inline int md_close(struct obd_export *exp, struct md_op_data *op_data,
1776                            struct md_open_data *mod,
1777                            struct ptlrpc_request **request)
1778 {
1779         int rc;
1780         ENTRY;
1781         EXP_CHECK_MD_OP(exp, close);
1782         EXP_MD_COUNTER_INCREMENT(exp, close);
1783         rc = MDP(exp->exp_obd, close)(exp, op_data, mod, request);
1784         RETURN(rc);
1785 }
1786
1787 static inline int md_create(struct obd_export *exp, struct md_op_data *op_data,
1788                             const void *data, int datalen, int mode, __u32 uid,
1789                             __u32 gid, __u32 cap_effective, __u64 rdev,
1790                             struct ptlrpc_request **request)
1791 {
1792         int rc;
1793         ENTRY;
1794         EXP_CHECK_MD_OP(exp, create);
1795         EXP_MD_COUNTER_INCREMENT(exp, create);
1796         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1797                                        uid, gid, cap_effective, rdev, request);
1798         RETURN(rc);
1799 }
1800
1801 static inline int md_done_writing(struct obd_export *exp,
1802                                   struct md_op_data *op_data,
1803                                   struct md_open_data *mod)
1804 {
1805         int rc;
1806         ENTRY;
1807         EXP_CHECK_MD_OP(exp, done_writing);
1808         EXP_MD_COUNTER_INCREMENT(exp, done_writing);
1809         rc = MDP(exp->exp_obd, done_writing)(exp, op_data, mod);
1810         RETURN(rc);
1811 }
1812
1813 static inline int md_enqueue(struct obd_export *exp,
1814                              struct ldlm_enqueue_info *einfo,
1815                              struct lookup_intent *it,
1816                              struct md_op_data *op_data,
1817                              struct lustre_handle *lockh,
1818                              void *lmm, int lmmsize,
1819                              int extra_lock_flags)
1820 {
1821         int rc;
1822         ENTRY;
1823         EXP_CHECK_MD_OP(exp, enqueue);
1824         EXP_MD_COUNTER_INCREMENT(exp, enqueue);
1825         rc = MDP(exp->exp_obd, enqueue)(exp, einfo, it, op_data, lockh,
1826                                         lmm, lmmsize, extra_lock_flags);
1827         RETURN(rc);
1828 }
1829
1830 static inline int md_getattr_name(struct obd_export *exp,
1831                                   const struct lu_fid *fid, struct obd_capa *oc,
1832                                   const char *name, int namelen,
1833                                   obd_valid valid, int ea_size, __u32 suppgid,
1834                                   struct ptlrpc_request **request)
1835 {
1836         int rc;
1837         ENTRY;
1838         EXP_CHECK_MD_OP(exp, getattr_name);
1839         EXP_MD_COUNTER_INCREMENT(exp, getattr_name);
1840         rc = MDP(exp->exp_obd, getattr_name)(exp, fid, oc, name, namelen,
1841                                              valid, ea_size, suppgid, request);
1842         RETURN(rc);
1843 }
1844
1845 static inline int md_intent_lock(struct obd_export *exp,
1846                                  struct md_op_data *op_data, void *lmm,
1847                                  int lmmsize, struct lookup_intent *it,
1848                                  int flags, struct ptlrpc_request **reqp,
1849                                  ldlm_blocking_callback cb_blocking,
1850                                  int extra_lock_flags)
1851 {
1852         int rc;
1853         ENTRY;
1854         EXP_CHECK_MD_OP(exp, intent_lock);
1855         EXP_MD_COUNTER_INCREMENT(exp, intent_lock);
1856         rc = MDP(exp->exp_obd, intent_lock)(exp, op_data, lmm, lmmsize,
1857                                             it, flags, reqp, cb_blocking,
1858                                             extra_lock_flags);
1859         RETURN(rc);
1860 }
1861
1862 static inline int md_link(struct obd_export *exp, struct md_op_data *op_data,
1863                           struct ptlrpc_request **request)
1864 {
1865         int rc;
1866         ENTRY;
1867         EXP_CHECK_MD_OP(exp, link);
1868         EXP_MD_COUNTER_INCREMENT(exp, link);
1869         rc = MDP(exp->exp_obd, link)(exp, op_data, request);
1870         RETURN(rc);
1871 }
1872
1873 static inline int md_rename(struct obd_export *exp, struct md_op_data *op_data,
1874                             const char *old, int oldlen, const char *new,
1875                             int newlen, struct ptlrpc_request **request)
1876 {
1877         int rc;
1878         ENTRY;
1879         EXP_CHECK_MD_OP(exp, rename);
1880         EXP_MD_COUNTER_INCREMENT(exp, rename);
1881         rc = MDP(exp->exp_obd, rename)(exp, op_data, old, oldlen, new,
1882                                        newlen, request);
1883         RETURN(rc);
1884 }
1885
1886 static inline int md_is_subdir(struct obd_export *exp,
1887                                const struct lu_fid *pfid,
1888                                const struct lu_fid *cfid,
1889                                struct ptlrpc_request **request)
1890 {
1891         int rc;
1892         ENTRY;
1893         EXP_CHECK_MD_OP(exp, is_subdir);
1894         EXP_MD_COUNTER_INCREMENT(exp, is_subdir);
1895         rc = MDP(exp->exp_obd, is_subdir)(exp, pfid, cfid, request);
1896         RETURN(rc);
1897 }
1898
1899 static inline int md_setattr(struct obd_export *exp, struct md_op_data *op_data,
1900                              void *ea, int ealen, void *ea2, int ea2len,
1901                              struct ptlrpc_request **request,
1902                              struct md_open_data **mod)
1903 {
1904         int rc;
1905         ENTRY;
1906         EXP_CHECK_MD_OP(exp, setattr);
1907         EXP_MD_COUNTER_INCREMENT(exp, setattr);
1908         rc = MDP(exp->exp_obd, setattr)(exp, op_data, ea, ealen,
1909                                         ea2, ea2len, request, mod);
1910         RETURN(rc);
1911 }
1912
1913 static inline int md_sync(struct obd_export *exp, const struct lu_fid *fid,
1914                           struct obd_capa *oc, struct ptlrpc_request **request)
1915 {
1916         int rc;
1917         ENTRY;
1918         EXP_CHECK_MD_OP(exp, sync);
1919         EXP_MD_COUNTER_INCREMENT(exp, sync);
1920         rc = MDP(exp->exp_obd, sync)(exp, fid, oc, request);
1921         RETURN(rc);
1922 }
1923
1924 static inline int md_readpage(struct obd_export *exp, const struct lu_fid *fid,
1925                               struct obd_capa *oc, __u64 offset,
1926                               struct page *page,
1927                               struct ptlrpc_request **request)
1928 {
1929         int rc;
1930         ENTRY;
1931         EXP_CHECK_MD_OP(exp, readpage);
1932         EXP_MD_COUNTER_INCREMENT(exp, readpage);
1933         rc = MDP(exp->exp_obd, readpage)(exp, fid, oc, offset, page, request);
1934         RETURN(rc);
1935 }
1936
1937 static inline int md_unlink(struct obd_export *exp, struct md_op_data *op_data,
1938                             struct ptlrpc_request **request)
1939 {
1940         int rc;
1941         ENTRY;
1942         EXP_CHECK_MD_OP(exp, unlink);
1943         EXP_MD_COUNTER_INCREMENT(exp, unlink);
1944         rc = MDP(exp->exp_obd, unlink)(exp, op_data, request);
1945         RETURN(rc);
1946 }
1947
1948 static inline int md_get_lustre_md(struct obd_export *exp,
1949                                    struct ptlrpc_request *req,
1950                                    struct obd_export *dt_exp,
1951                                    struct obd_export *md_exp,
1952                                    struct lustre_md *md)
1953 {
1954         ENTRY;
1955         EXP_CHECK_MD_OP(exp, get_lustre_md);
1956         EXP_MD_COUNTER_INCREMENT(exp, get_lustre_md);
1957         RETURN(MDP(exp->exp_obd, get_lustre_md)(exp, req, dt_exp, md_exp, md));
1958 }
1959
1960 static inline int md_free_lustre_md(struct obd_export *exp,
1961                                     struct lustre_md *md)
1962 {
1963         ENTRY;
1964         EXP_CHECK_MD_OP(exp, free_lustre_md);
1965         EXP_MD_COUNTER_INCREMENT(exp, free_lustre_md);
1966         RETURN(MDP(exp->exp_obd, free_lustre_md)(exp, md));
1967 }
1968
1969 static inline int md_setxattr(struct obd_export *exp,
1970                               const struct lu_fid *fid, struct obd_capa *oc,
1971                               obd_valid valid, const char *name,
1972                               const char *input, int input_size,
1973                               int output_size, int flags, __u32 suppgid,
1974                               struct ptlrpc_request **request)
1975 {
1976         ENTRY;
1977         EXP_CHECK_MD_OP(exp, setxattr);
1978         EXP_MD_COUNTER_INCREMENT(exp, setxattr);
1979         RETURN(MDP(exp->exp_obd, setxattr)(exp, fid, oc, valid, name, input,
1980                                            input_size, output_size, flags,
1981                                            suppgid, request));
1982 }
1983
1984 static inline int md_getxattr(struct obd_export *exp,
1985                               const struct lu_fid *fid, struct obd_capa *oc,
1986                               obd_valid valid, const char *name,
1987                               const char *input, int input_size,
1988                               int output_size, int flags,
1989                               struct ptlrpc_request **request)
1990 {
1991         ENTRY;
1992         EXP_CHECK_MD_OP(exp, getxattr);
1993         EXP_MD_COUNTER_INCREMENT(exp, getxattr);
1994         RETURN(MDP(exp->exp_obd, getxattr)(exp, fid, oc, valid, name, input,
1995                                            input_size, output_size, flags,
1996                                            request));
1997 }
1998
1999 static inline int md_set_open_replay_data(struct obd_export *exp,
2000                                           struct obd_client_handle *och,
2001                                           struct ptlrpc_request *open_req)
2002 {
2003         ENTRY;
2004         EXP_CHECK_MD_OP(exp, set_open_replay_data);
2005         EXP_MD_COUNTER_INCREMENT(exp, set_open_replay_data);
2006         RETURN(MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req));
2007 }
2008
2009 static inline int md_clear_open_replay_data(struct obd_export *exp,
2010                                             struct obd_client_handle *och)
2011 {
2012         ENTRY;
2013         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
2014         EXP_MD_COUNTER_INCREMENT(exp, clear_open_replay_data);
2015         RETURN(MDP(exp->exp_obd, clear_open_replay_data)(exp, och));
2016 }
2017
2018 static inline int md_set_lock_data(struct obd_export *exp,
2019                                    __u64 *lockh, void *data)
2020 {
2021         ENTRY;
2022         EXP_CHECK_MD_OP(exp, set_lock_data);
2023         EXP_MD_COUNTER_INCREMENT(exp, set_lock_data);
2024         RETURN(MDP(exp->exp_obd, set_lock_data)(exp, lockh, data));
2025 }
2026
2027 static inline int md_cancel_unused(struct obd_export *exp,
2028                                    const struct lu_fid *fid,
2029                                    ldlm_policy_data_t *policy,
2030                                    ldlm_mode_t mode, int flags, void *opaque)
2031 {
2032         int rc;
2033         ENTRY;
2034
2035         EXP_CHECK_MD_OP(exp, cancel_unused);
2036         EXP_MD_COUNTER_INCREMENT(exp, cancel_unused);
2037
2038         rc = MDP(exp->exp_obd, cancel_unused)(exp, fid, policy, mode,
2039                                               flags, opaque);
2040         RETURN(rc);
2041 }
2042
2043 static inline ldlm_mode_t md_lock_match(struct obd_export *exp, int flags,
2044                                         const struct lu_fid *fid,
2045                                         ldlm_type_t type,
2046                                         ldlm_policy_data_t *policy,
2047                                         ldlm_mode_t mode,
2048                                         struct lustre_handle *lockh)
2049 {
2050         ENTRY;
2051         EXP_CHECK_MD_OP(exp, lock_match);
2052         EXP_MD_COUNTER_INCREMENT(exp, lock_match);
2053         RETURN(MDP(exp->exp_obd, lock_match)(exp, flags, fid, type,
2054                                              policy, mode, lockh));
2055 }
2056
2057 static inline int md_init_ea_size(struct obd_export *exp, int easize,
2058                                   int def_asize, int cookiesize)
2059 {
2060         ENTRY;
2061         EXP_CHECK_MD_OP(exp, init_ea_size);
2062         EXP_MD_COUNTER_INCREMENT(exp, init_ea_size);
2063         RETURN(MDP(exp->exp_obd, init_ea_size)(exp, easize, def_asize,
2064                                                cookiesize));
2065 }
2066
2067 static inline int md_get_remote_perm(struct obd_export *exp,
2068                                      const struct lu_fid *fid,
2069                                      struct obd_capa *oc, __u32 suppgid,
2070                                      struct ptlrpc_request **request)
2071 {
2072         ENTRY;
2073         EXP_CHECK_MD_OP(exp, get_remote_perm);
2074         EXP_MD_COUNTER_INCREMENT(exp, get_remote_perm);
2075         RETURN(MDP(exp->exp_obd, get_remote_perm)(exp, fid, oc, suppgid,
2076                                                   request));
2077 }
2078
2079 static inline int md_renew_capa(struct obd_export *exp, struct obd_capa *ocapa,
2080                                 renew_capa_cb_t cb)
2081 {
2082         int rc;
2083         ENTRY;
2084         EXP_CHECK_MD_OP(exp, renew_capa);
2085         EXP_MD_COUNTER_INCREMENT(exp, renew_capa);
2086         rc = MDP(exp->exp_obd, renew_capa)(exp, ocapa, cb);
2087         RETURN(rc);
2088 }
2089
2090 static inline int md_intent_getattr_async(struct obd_export *exp,
2091                                           struct md_enqueue_info *minfo,
2092                                           struct ldlm_enqueue_info *einfo)
2093 {
2094         int rc;
2095         ENTRY;
2096         EXP_CHECK_MD_OP(exp, intent_getattr_async);
2097         EXP_MD_COUNTER_INCREMENT(exp, intent_getattr_async);
2098         rc = MDP(exp->exp_obd, intent_getattr_async)(exp, minfo, einfo);
2099         RETURN(rc);
2100 }
2101
2102 static inline int md_revalidate_lock(struct obd_export *exp,
2103                                      struct lookup_intent *it,
2104                                      struct lu_fid *fid)
2105 {
2106         int rc;
2107         ENTRY;
2108         EXP_CHECK_MD_OP(exp, revalidate_lock);
2109         EXP_MD_COUNTER_INCREMENT(exp, revalidate_lock);
2110         rc = MDP(exp->exp_obd, revalidate_lock)(exp, it, fid);
2111         RETURN(rc);
2112 }
2113
2114
2115 /* OBD Metadata Support */
2116
2117 extern int obd_init_caches(void);
2118 extern void obd_cleanup_caches(void);
2119
2120 /* support routines */
2121 extern cfs_mem_cache_t *obdo_cachep;
2122
2123 #define OBDO_ALLOC(ptr)                                                       \
2124 do {                                                                          \
2125         OBD_SLAB_ALLOC_PTR((ptr), obdo_cachep);                               \
2126 } while(0)
2127
2128 #define OBDO_FREE(ptr)                                                        \
2129 do {                                                                          \
2130         OBD_SLAB_FREE_PTR((ptr), obdo_cachep);                                \
2131 } while(0)
2132
2133
2134 static inline void obdo2fid(struct obdo *oa, struct lu_fid *fid)
2135 {
2136         /* something here */
2137 }
2138
2139 static inline void fid2obdo(struct lu_fid *fid, struct obdo *oa)
2140 {
2141         /* something here */
2142 }
2143
2144 /* I'm as embarrassed about this as you are.
2145  *
2146  * <shaver> // XXX do not look into _superhack with remaining eye
2147  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
2148 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
2149
2150 /* sysctl.c */
2151 extern void obd_sysctl_init (void);
2152 extern void obd_sysctl_clean (void);
2153
2154 /* uuid.c  */
2155 typedef __u8 class_uuid_t[16];
2156 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
2157
2158 /* lustre_peer.c    */
2159 int lustre_uuid_to_peer(const char *uuid, lnet_nid_t *peer_nid, int index);
2160 int class_add_uuid(const char *uuid, __u64 nid);
2161 int class_del_uuid (const char *uuid);
2162 void class_init_uuidlist(void);
2163 void class_exit_uuidlist(void);
2164
2165 /* mea.c */
2166 int mea_name2idx(struct lmv_stripe_md *mea, const char *name, int namelen);
2167 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
2168
2169 /* prng.c */
2170 void ll_generate_random_uuid(class_uuid_t uuid_out);
2171
2172 #endif /* __LINUX_OBD_CLASS_H */