lustre/include/obd_class.h

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  *  Copyright (C) 2001-2003 Cluster File Systems, Inc.
   5  *
   6  *   This file is part of Lustre, http://www.lustre.org.
   7  *
   8  *   Lustre is free software; you can redistribute it and/or
   9  *   modify it under the terms of version 2 of the GNU General Public
  10  *   License as published by the Free Software Foundation.
  11  *
  12  *   Lustre is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *   GNU General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU General Public License
  18  *   along with Lustre; if not, write to the Free Software
  19  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  *
  21  */
  22
  23 #ifndef __CLASS_OBD_H
  24 #define __CLASS_OBD_H
  25
  26 #ifndef __KERNEL__
  27 # include <liblustre.h>
  28 #endif
  29
  30 #include <obd_support.h>
  31 #include <lustre_import.h>
  32 #include <lustre_net.h>
  33 #include <obd.h>
  34 #include <lustre_lib.h>
  35 #include <lustre/lustre_idl.h>
  36 #include <lprocfs_status.h>
  37
  38 #if defined(__linux__)
  39 #include <linux/obd_class.h>
  40 #elif defined(__APPLE__)
  41 #include <darwin/obd_class.h>
  42 #elif defined(__WINNT__)
  43 #include <winnt/obd_class.h>
  44 #else
  45 #error Unsupported operating system.
  46 #endif
  47
  48 /* OBD Device Declarations */
  49 extern struct obd_device *obd_devs[MAX_OBD_DEVICES];
  50 extern spinlock_t obd_dev_lock;
  51
  52 /* OBD Operations Declarations */
  53 extern struct obd_device *class_conn2obd(struct lustre_handle *);
  54 extern struct obd_device *class_exp2obd(struct obd_export *);
  55
  56 struct lu_device_type;
  57
  58 /* genops.c */
  59 struct obd_export *class_conn2export(struct lustre_handle *);
  60 int class_register_type(struct obd_ops *, struct md_ops *,
  61                         struct lprocfs_vars *, const char *nm,
  62                         struct lu_device_type *ldt);
  63 int class_unregister_type(const char *nm);
  64
  65 struct obd_device *class_newdev(const char *type_name, const char *name);
  66 void class_release_dev(struct obd_device *obd);
  67
  68 int class_name2dev(const char *name);
  69 struct obd_device *class_name2obd(const char *name);
  70 int class_uuid2dev(struct obd_uuid *uuid);
  71 struct obd_device *class_uuid2obd(struct obd_uuid *uuid);
  72 void class_obd_list(void);
  73 struct obd_device * class_find_client_obd(struct obd_uuid *tgt_uuid,
  74                                           const char * typ_name,
  75                                           struct obd_uuid *grp_uuid);
  76 struct obd_device * class_find_client_notype(struct obd_uuid *tgt_uuid,
  77                                              struct obd_uuid *grp_uuid);
  78 struct obd_device * class_devices_in_group(struct obd_uuid *grp_uuid,
  79                                            int *next);
  80 struct obd_device * class_num2obd(int num);
  81
  82 int oig_init(struct obd_io_group **oig);
  83 int oig_add_one(struct obd_io_group *oig, struct oig_callback_context *occ);
  84 void oig_complete_one(struct obd_io_group *oig,
  85                       struct oig_callback_context *occ, int rc);
  86 void oig_release(struct obd_io_group *oig);
  87 int oig_wait(struct obd_io_group *oig);
  88
  89 char *obd_export_nid2str(struct obd_export *exp);
  90
  91 int obd_export_evict_by_nid(struct obd_device *obd, const char *nid);
  92 int obd_export_evict_by_uuid(struct obd_device *obd, const char *uuid);
  93
  94 /* obd_config.c */
  95 int class_process_config(struct lustre_cfg *lcfg);
  96 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
  97                              struct lustre_cfg *lcfg, void *data);
  98 int class_attach(struct lustre_cfg *lcfg);
  99 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
 100 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg);
 101 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg);
 102 struct obd_device *class_incref(struct obd_device *obd);
 103 void class_decref(struct obd_device *obd);
 104
 105 /*obdecho*/
 106 #ifdef LPROCFS
 107 extern void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars);
 108 #else
 109 static inline void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars)
 110 {
 111         memset(lvars, 0, sizeof(*lvars));
 112 }
 113 #endif
 114
 115 #define CFG_F_START     0x01   /* Set when we start updating from a log */
 116 #define CFG_F_MARKER    0x02   /* We are within a maker */
 117 #define CFG_F_SKIP      0x04   /* We should ignore this cfg command */
 118 #define CFG_F_COMPAT146 0x08   /* Allow old-style logs */
 119 #define CFG_F_EXCLUDE   0x10   /* OST exclusion list */
 120
 121 /* Passed as data param to class_config_parse_llog */
 122 struct config_llog_instance {
 123         char *              cfg_instance;
 124         struct super_block *cfg_sb;
 125         struct obd_uuid     cfg_uuid;
 126         int                 cfg_last_idx; /* for partial llog processing */
 127         int                 cfg_flags;
 128 };
 129 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
 130                             struct config_llog_instance *cfg);
 131 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
 132                            struct config_llog_instance *cfg);
 133
 134 /* list of active configuration logs  */
 135 struct config_llog_data {
 136         char               *cld_logname;
 137         struct ldlm_res_id  cld_resid;
 138         struct config_llog_instance cld_cfg;
 139         struct list_head    cld_list_chain;
 140         atomic_t            cld_refcount;
 141         struct obd_export  *cld_mgcexp;
 142         unsigned int        cld_stopping:1, /* we were told to stop watching */
 143                             cld_lostlock:1; /* lock not requeued */
 144 };
 145
 146 struct lustre_profile {
 147         struct list_head lp_list;
 148         char            *lp_profile;
 149         char            *lp_dt;
 150         char            *lp_md;
 151 };
 152
 153 struct lustre_profile *class_get_profile(const char * prof);
 154 void class_del_profile(const char *prof);
 155 void class_del_profiles(void);
 156
 157 #define class_export_rpc_get(exp)                                       \
 158 ({                                                                      \
 159         atomic_inc(&(exp)->exp_rpc_count);                              \
 160         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",    \
 161                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 162         class_export_get(exp);                                          \
 163 })
 164
 165 #define class_export_rpc_put(exp)                                       \
 166 ({                                                                      \
 167         atomic_dec(&(exp)->exp_rpc_count);                              \
 168         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",    \
 169                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 170         class_export_put(exp);                                          \
 171 })
 172
 173 /* genops.c */
 174 #define class_export_get(exp)                                                  \
 175 ({                                                                             \
 176         struct obd_export *exp_ = exp;                                         \
 177         atomic_inc(&exp_->exp_refcount);                                       \
 178         CDEBUG(D_INFO, "GETting export %p : new refcount %d\n", exp_,          \
 179                atomic_read(&exp_->exp_refcount));                              \
 180         exp_;                                                                  \
 181 })
 182
 183 #define class_export_put(exp)                                                  \
 184 do {                                                                           \
 185         LASSERT((exp) != NULL);                                                \
 186         CDEBUG(D_INFO, "PUTting export %p : new refcount %d\n", (exp),         \
 187                atomic_read(&(exp)->exp_refcount) - 1);                         \
 188         LASSERT(atomic_read(&(exp)->exp_refcount) > 0);                        \
 189         LASSERT(atomic_read(&(exp)->exp_refcount) < 0x5a5a5a);                 \
 190         __class_export_put(exp);                                               \
 191 } while (0)
 192
 193 void __class_export_put(struct obd_export *);
 194 struct obd_export *class_new_export(struct obd_device *obddev,
 195                                     struct obd_uuid *cluuid);
 196 void class_unlink_export(struct obd_export *exp);
 197
 198 struct obd_import *class_import_get(struct obd_import *);
 199 void class_import_put(struct obd_import *);
 200 struct obd_import *class_new_import(struct obd_device *obd);
 201 void class_destroy_import(struct obd_import *exp);
 202
 203 struct obd_type *class_search_type(const char *name);
 204 struct obd_type *class_get_type(const char *name);
 205 void class_put_type(struct obd_type *type);
 206 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 207                   struct obd_uuid *cluuid);
 208 int class_disconnect(struct obd_export *exp);
 209 void class_fail_export(struct obd_export *exp);
 210 void class_disconnect_exports(struct obd_device *obddev);
 211 int class_disconnect_stale_exports(struct obd_device *,
 212                                     int (*test_export)(struct obd_export *));
 213 int class_manual_cleanup(struct obd_device *obd);
 214
 215 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_flag valid);
 216 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
 217 void obdo_from_iattr(struct obdo *oa, struct iattr *attr,
 218                      unsigned int ia_valid);
 219 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, obd_flag valid);
 220 void md_from_obdo(struct md_op_data *op_data, struct obdo *oa, obd_flag valid);
 221 void obdo_from_md(struct obdo *oa, struct md_op_data *op_data,
 222                   unsigned int valid);
 223
 224 #define OBT(dev)        (dev)->obd_type
 225 #define OBP(dev, op)    (dev)->obd_type->typ_dt_ops->o_ ## op
 226 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
 227 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 228
 229 /* Ensure obd_setup: used for cleanup which must be called
 230    while obd is stopping */
 231 #define OBD_CHECK_DEV(obd)                                      \
 232 do {                                                            \
 233         if (!(obd)) {                                           \
 234                 CERROR("NULL device\n");                        \
 235                 RETURN(-ENODEV);                                \
 236         }                                                       \
 237 } while (0)
 238
 239 /* ensure obd_setup and !obd_stopping */
 240 #define OBD_CHECK_DEV_ACTIVE(obd)                               \
 241 do {                                                            \
 242         OBD_CHECK_DEV(obd);                                     \
 243         if (!(obd)->obd_set_up || (obd)->obd_stopping) {        \
 244                 CERROR("Device %d not setup\n",                 \
 245                        (obd)->obd_minor);                       \
 246                 RETURN(-ENODEV);                                \
 247         }                                                       \
 248 } while (0)
 249
 250
 251 #ifdef LPROCFS
 252 #define OBD_COUNTER_OFFSET(op)                                  \
 253         ((offsetof(struct obd_ops, o_ ## op) -                  \
 254           offsetof(struct obd_ops, o_iocontrol))                \
 255          / sizeof(((struct obd_ops *)(0))->o_iocontrol))
 256
 257 #define OBD_COUNTER_INCREMENT(obdx, op)                           \
 258         if ((obdx)->obd_stats != NULL) {                          \
 259                 unsigned int coffset;                             \
 260                 coffset = (unsigned int)((obdx)->obd_cntr_base) + \
 261                         OBD_COUNTER_OFFSET(op);                   \
 262                 LASSERT(coffset < (obdx)->obd_stats->ls_num);     \
 263                 lprocfs_counter_incr((obdx)->obd_stats, coffset); \
 264         }
 265
 266 #define EXP_COUNTER_INCREMENT(export, op)                                    \
 267         if ((export)->exp_obd->obd_stats != NULL) {                          \
 268                 unsigned int coffset;                                        \
 269                 coffset = (unsigned int)((export)->exp_obd->obd_cntr_base) + \
 270                         OBD_COUNTER_OFFSET(op);                              \
 271                 LASSERT(coffset < (export)->exp_obd->obd_stats->ls_num);     \
 272                 lprocfs_counter_incr((export)->exp_obd->obd_stats, coffset); \
 273                 if ((export)->exp_ops_stats != NULL)                         \
 274                         lprocfs_counter_incr(                                \
 275                                 (export)->exp_ops_stats, coffset);           \
 276         }
 277
 278 #define MD_COUNTER_OFFSET(op)                                   \
 279         ((offsetof(struct md_ops, m_ ## op) -                   \
 280           offsetof(struct md_ops, m_getstatus))                 \
 281          / sizeof(((struct md_ops *)(0))->m_getstatus))
 282
 283 #define MD_COUNTER_INCREMENT(obdx, op)                           \
 284         if ((obd)->md_stats != NULL) {                           \
 285                 unsigned int coffset;                            \
 286                 coffset = (unsigned int)((obdx)->md_cntr_base) + \
 287                         MD_COUNTER_OFFSET(op);                   \
 288                 LASSERT(coffset < (obdx)->md_stats->ls_num);     \
 289                 lprocfs_counter_incr((obdx)->md_stats, coffset); \
 290         }
 291
 292 #define EXP_MD_COUNTER_INCREMENT(export, op)                                 \
 293         if ((export)->exp_obd->obd_stats != NULL) {                          \
 294                 unsigned int coffset;                                        \
 295                 coffset = (unsigned int)((export)->exp_obd->md_cntr_base) +  \
 296                         MD_COUNTER_OFFSET(op);                               \
 297                 LASSERT(coffset < (export)->exp_obd->md_stats->ls_num);      \
 298                 lprocfs_counter_incr((export)->exp_obd->md_stats, coffset);  \
 299                 if ((export)->exp_md_stats != NULL)                          \
 300                         lprocfs_counter_incr(                                \
 301                                 (export)->exp_md_stats, coffset);            \
 302         }
 303
 304 #else
 305 #define OBD_COUNTER_OFFSET(op)
 306 #define OBD_COUNTER_INCREMENT(obd, op)
 307 #define EXP_COUNTER_INCREMENT(exp, op)
 308 #define MD_COUNTER_INCREMENT(obd, op)
 309 #define EXP_MD_COUNTER_INCREMENT(exp, op)
 310 #endif
 311
 312 #define OBD_CHECK_MD_OP(obd, op, err)                           \
 313 do {                                                            \
 314         if (!OBT(obd) || !MDP((obd), op)) {                     \
 315                 if (err)                                        \
 316                         CERROR("md_" #op ": dev %s/%d no operation\n", \
 317                                obd->obd_name, obd->obd_minor);  \
 318                 RETURN(err);                                    \
 319         }                                                       \
 320 } while (0)
 321
 322 #define EXP_CHECK_MD_OP(exp, op)                                \
 323 do {                                                            \
 324         if ((exp) == NULL) {                                    \
 325                 CERROR("obd_" #op ": NULL export\n");           \
 326                 RETURN(-ENODEV);                                \
 327         }                                                       \
 328         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 329                 CERROR("obd_" #op ": cleaned up obd\n");        \
 330                 RETURN(-EOPNOTSUPP);                            \
 331         }                                                       \
 332         if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
 333                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 334                        (exp)->exp_obd->obd_name,                \
 335                        (exp)->exp_obd->obd_minor);              \
 336                 RETURN(-EOPNOTSUPP);                            \
 337         }                                                       \
 338 } while (0)
 339
 340
 341 #define OBD_CHECK_DT_OP(obd, op, err)                           \
 342 do {                                                            \
 343         if (!OBT(obd) || !OBP((obd), op)) {                     \
 344                 if (err)                                        \
 345                         CERROR("obd_" #op ": dev %d no operation\n",    \
 346                                obd->obd_minor);                 \
 347                 RETURN(err);                                    \
 348         }                                                       \
 349 } while (0)
 350
 351 #define EXP_CHECK_DT_OP(exp, op)                                \
 352 do {                                                            \
 353         if ((exp) == NULL) {                                    \
 354                 CERROR("obd_" #op ": NULL export\n");           \
 355                 RETURN(-ENODEV);                                \
 356         }                                                       \
 357         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 358                 CERROR("obd_" #op ": cleaned up obd\n");        \
 359                 RETURN(-EOPNOTSUPP);                            \
 360         }                                                       \
 361         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 362                 CERROR("obd_" #op ": dev %d no operation\n",    \
 363                        (exp)->exp_obd->obd_minor);              \
 364                 RETURN(-EOPNOTSUPP);                            \
 365         }                                                       \
 366 } while (0)
 367
 368 #define CTXT_CHECK_OP(ctxt, op, err)                                 \
 369 do {                                                                 \
 370         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {             \
 371                 if (err)                                             \
 372                         CERROR("lop_" #op ": dev %d no operation\n", \
 373                                ctxt->loc_obd->obd_minor);            \
 374                 RETURN(err);                                         \
 375         }                                                            \
 376 } while (0)
 377
 378 static inline int class_devno_max(void)
 379 {
 380         return MAX_OBD_DEVICES;
 381 }
 382
 383 static inline int obd_get_info(struct obd_export *exp, __u32 keylen,
 384                                void *key, __u32 *vallen, void *val)
 385 {
 386         int rc;
 387         ENTRY;
 388
 389         EXP_CHECK_DT_OP(exp, get_info);
 390         EXP_COUNTER_INCREMENT(exp, get_info);
 391
 392         rc = OBP(exp->exp_obd, get_info)(exp, keylen, key, vallen, val);
 393         RETURN(rc);
 394 }
 395
 396 static inline int obd_set_info_async(struct obd_export *exp, obd_count keylen,
 397                                      void *key, obd_count vallen, void *val,
 398                                      struct ptlrpc_request_set *set)
 399 {
 400         int rc;
 401         ENTRY;
 402
 403         EXP_CHECK_DT_OP(exp, set_info_async);
 404         EXP_COUNTER_INCREMENT(exp, set_info_async);
 405
 406         rc = OBP(exp->exp_obd, set_info_async)(exp, keylen, key, vallen, val,
 407                                                set);
 408         RETURN(rc);
 409 }
 410
 411 #ifdef __KERNEL__
 412 #define DECLARE_LU_VARS(ldt, d)                 \
 413         struct lu_device_type *ldt;             \
 414         struct lu_device *d
 415 #else
 416 #define DECLARE_LU_VARS(ldt, d)                                 \
 417         extern void __placeholder_to_put_a_semicolon(void)
 418 #endif
 419 static inline int obd_setup(struct obd_device *obd, struct lustre_cfg *cfg)
 420 {
 421         int rc;
 422         DECLARE_LU_VARS(ldt, d);
 423         ENTRY;
 424
 425 #ifdef __KERNEL__
 426         ldt = obd->obd_type->typ_lu;
 427         if (ldt != NULL) {
 428                 struct lu_env env;
 429
 430                 rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
 431                 if (rc == 0) {
 432                         d = ldt->ldt_ops->ldto_device_alloc(&env, ldt, cfg);
 433                         lu_env_fini(&env);
 434                         if (!IS_ERR(d)) {
 435                                 obd->obd_lu_dev = d;
 436                                 d->ld_obd = obd;
 437                                 rc = 0;
 438                         } else
 439                                 rc = PTR_ERR(d);
 440                 }
 441         } else
 442 #endif
 443         {
 444                 OBD_CHECK_DT_OP(obd, setup, -EOPNOTSUPP);
 445                 OBD_COUNTER_INCREMENT(obd, setup);
 446                 rc = OBP(obd, setup)(obd, cfg);
 447         }
 448         RETURN(rc);
 449 }
 450
 451 static inline int obd_precleanup(struct obd_device *obd,
 452                                  enum obd_cleanup_stage cleanup_stage)
 453 {
 454         int rc;
 455         DECLARE_LU_VARS(ldt, d);
 456         ENTRY;
 457
 458         OBD_CHECK_DEV(obd);
 459 #ifdef __KERNEL__
 460         ldt = obd->obd_type->typ_lu;
 461         d = obd->obd_lu_dev;
 462         if (ldt != NULL) {
 463                 LASSERT(d != NULL);
 464                 if (cleanup_stage == OBD_CLEANUP_EXPORTS) {
 465                         struct lu_env env;
 466
 467                         rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
 468                         if (rc == 0) {
 469                                 ldt->ldt_ops->ldto_device_fini(&env, d);
 470                                 lu_env_fini(&env);
 471                         }
 472                 } else {
 473                         rc = 0;
 474                 }
 475         } else
 476 #endif
 477         {
 478                 OBD_CHECK_DT_OP(obd, precleanup, 0);
 479                 rc = OBP(obd, precleanup)(obd, cleanup_stage);
 480         }
 481
 482         OBD_COUNTER_INCREMENT(obd, precleanup);
 483         RETURN(rc);
 484 }
 485
 486 static inline int obd_cleanup(struct obd_device *obd)
 487 {
 488         int rc;
 489         DECLARE_LU_VARS(ldt, d);
 490         ENTRY;
 491
 492         OBD_CHECK_DEV(obd);
 493
 494 #ifdef __KERNEL__
 495         ldt = obd->obd_type->typ_lu;
 496         d = obd->obd_lu_dev;
 497         if (ldt != NULL) {
 498                 struct lu_env env;
 499                 LASSERT(d != NULL);
 500
 501                 rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
 502                 if (rc == 0) {
 503                         ldt->ldt_ops->ldto_device_free(&env, d);
 504                         lu_env_fini(&env);
 505                         obd->obd_lu_dev = NULL;
 506                 }
 507         } else
 508 #endif
 509         {
 510                 OBD_CHECK_DT_OP(obd, cleanup, 0);
 511                 rc = OBP(obd, cleanup)(obd);
 512         }
 513         OBD_COUNTER_INCREMENT(obd, cleanup);
 514         RETURN(rc);
 515 }
 516
 517 static inline int
 518 obd_process_config(struct obd_device *obd, int datalen, void *data)
 519 {
 520         int rc;
 521         DECLARE_LU_VARS(ldt, d);
 522         ENTRY;
 523
 524         OBD_CHECK_DEV(obd);
 525
 526 #ifdef __KERNEL__
 527         ldt = obd->obd_type->typ_lu;
 528         d = obd->obd_lu_dev;
 529         if (ldt != NULL && d != NULL) {
 530                 struct lu_env env;
 531
 532                 rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
 533                 if (rc == 0) {
 534                         rc = d->ld_ops->ldo_process_config(&env, d, data);
 535                         lu_env_fini(&env);
 536                 }
 537         } else
 538 #endif
 539         {
 540                 OBD_CHECK_DT_OP(obd, process_config, -EOPNOTSUPP);
 541                 rc = OBP(obd, process_config)(obd, datalen, data);
 542         }
 543         OBD_COUNTER_INCREMENT(obd, process_config);
 544
 545         RETURN(rc);
 546 }
 547
 548 /* Pack an in-memory MD struct for storage on disk.
 549  * Returns +ve size of packed MD (0 for free), or -ve error.
 550  *
 551  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 552  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 553  * If @*disk_tgt == NULL, it will be allocated
 554  */
 555 static inline int obd_packmd(struct obd_export *exp,
 556                              struct lov_mds_md **disk_tgt,
 557                              struct lov_stripe_md *mem_src)
 558 {
 559         int rc;
 560         ENTRY;
 561
 562         EXP_CHECK_DT_OP(exp, packmd);
 563         EXP_COUNTER_INCREMENT(exp, packmd);
 564
 565         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 566         RETURN(rc);
 567 }
 568
 569 static inline int obd_size_diskmd(struct obd_export *exp,
 570                                   struct lov_stripe_md *mem_src)
 571 {
 572         return obd_packmd(exp, NULL, mem_src);
 573 }
 574
 575 /* helper functions */
 576 static inline int obd_alloc_diskmd(struct obd_export *exp,
 577                                    struct lov_mds_md **disk_tgt)
 578 {
 579         LASSERT(disk_tgt);
 580         LASSERT(*disk_tgt == NULL);
 581         return obd_packmd(exp, disk_tgt, NULL);
 582 }
 583
 584 static inline int obd_free_diskmd(struct obd_export *exp,
 585                                   struct lov_mds_md **disk_tgt)
 586 {
 587         LASSERT(disk_tgt);
 588         LASSERT(*disk_tgt);
 589         return obd_packmd(exp, disk_tgt, NULL);
 590 }
 591
 592 /* Unpack an MD struct from disk to in-memory format.
 593  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 594  *
 595  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 596  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 597  * If @*mem_tgt == NULL, it will be allocated
 598  */
 599 static inline int obd_unpackmd(struct obd_export *exp,
 600                                struct lov_stripe_md **mem_tgt,
 601                                struct lov_mds_md *disk_src,
 602                                int disk_len)
 603 {
 604         int rc;
 605         ENTRY;
 606
 607         EXP_CHECK_DT_OP(exp, unpackmd);
 608         EXP_COUNTER_INCREMENT(exp, unpackmd);
 609
 610         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 611         RETURN(rc);
 612 }
 613
 614 /* helper functions */
 615 static inline int obd_alloc_memmd(struct obd_export *exp,
 616                                   struct lov_stripe_md **mem_tgt)
 617 {
 618         LASSERT(mem_tgt);
 619         LASSERT(*mem_tgt == NULL);
 620         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 621 }
 622
 623 static inline int obd_free_memmd(struct obd_export *exp,
 624                                  struct lov_stripe_md **mem_tgt)
 625 {
 626         LASSERT(mem_tgt);
 627         LASSERT(*mem_tgt);
 628         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 629 }
 630
 631 static inline int obd_checkmd(struct obd_export *exp,
 632                               struct obd_export *md_exp,
 633                               struct lov_stripe_md *mem_tgt)
 634 {
 635         int rc;
 636         ENTRY;
 637
 638         EXP_CHECK_DT_OP(exp, checkmd);
 639         EXP_COUNTER_INCREMENT(exp, checkmd);
 640
 641         rc = OBP(exp->exp_obd, checkmd)(exp, md_exp, mem_tgt);
 642         RETURN(rc);
 643 }
 644
 645 static inline int obd_precreate(struct obd_export *exp)
 646 {
 647         int rc;
 648         ENTRY;
 649
 650         EXP_CHECK_DT_OP(exp, precreate);
 651         OBD_COUNTER_INCREMENT(exp->exp_obd, precreate);
 652
 653         rc = OBP(exp->exp_obd, precreate)(exp);
 654         RETURN(rc);
 655 }
 656
 657 static inline int obd_create(struct obd_export *exp, struct obdo *obdo,
 658                              struct lov_stripe_md **ea,
 659                              struct obd_trans_info *oti)
 660 {
 661         int rc;
 662         ENTRY;
 663
 664         EXP_CHECK_DT_OP(exp, create);
 665         EXP_COUNTER_INCREMENT(exp, create);
 666
 667         rc = OBP(exp->exp_obd, create)(exp, obdo, ea, oti);
 668         RETURN(rc);
 669 }
 670
 671 static inline int obd_destroy(struct obd_export *exp, struct obdo *obdo,
 672                               struct lov_stripe_md *ea,
 673                               struct obd_trans_info *oti,
 674                               struct obd_export *md_exp)
 675 {
 676         int rc;
 677         ENTRY;
 678
 679         EXP_CHECK_DT_OP(exp, destroy);
 680         EXP_COUNTER_INCREMENT(exp, destroy);
 681
 682         rc = OBP(exp->exp_obd, destroy)(exp, obdo, ea, oti, md_exp);
 683         RETURN(rc);
 684 }
 685
 686 static inline int obd_getattr(struct obd_export *exp, struct obd_info *oinfo)
 687 {
 688         int rc;
 689         ENTRY;
 690
 691         EXP_CHECK_DT_OP(exp, getattr);
 692         EXP_COUNTER_INCREMENT(exp, getattr);
 693
 694         rc = OBP(exp->exp_obd, getattr)(exp, oinfo);
 695         RETURN(rc);
 696 }
 697
 698 static inline int obd_getattr_async(struct obd_export *exp,
 699                                     struct obd_info *oinfo,
 700                                     struct ptlrpc_request_set *set)
 701 {
 702         int rc;
 703         ENTRY;
 704
 705         EXP_CHECK_DT_OP(exp, getattr_async);
 706         EXP_COUNTER_INCREMENT(exp, getattr_async);
 707
 708         rc = OBP(exp->exp_obd, getattr_async)(exp, oinfo, set);
 709         RETURN(rc);
 710 }
 711
 712 static inline int obd_setattr(struct obd_export *exp, struct obd_info *oinfo,
 713                               struct obd_trans_info *oti)
 714 {
 715         int rc;
 716         ENTRY;
 717
 718         EXP_CHECK_DT_OP(exp, setattr);
 719         EXP_COUNTER_INCREMENT(exp, setattr);
 720
 721         rc = OBP(exp->exp_obd, setattr)(exp, oinfo, oti);
 722         RETURN(rc);
 723 }
 724
 725 /* This performs all the requests set init/wait/destroy actions. */
 726 static inline int obd_setattr_rqset(struct obd_export *exp,
 727                                     struct obd_info *oinfo,
 728                                     struct obd_trans_info *oti)
 729 {
 730         struct ptlrpc_request_set *set = NULL;
 731         int rc;
 732         ENTRY;
 733
 734         EXP_CHECK_DT_OP(exp, setattr_async);
 735         EXP_COUNTER_INCREMENT(exp, setattr_async);
 736
 737         set =  ptlrpc_prep_set();
 738         if (set == NULL)
 739                 RETURN(-ENOMEM);
 740
 741         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 742         if (rc == 0)
 743                 rc = ptlrpc_set_wait(set);
 744         ptlrpc_set_destroy(set);
 745         RETURN(rc);
 746 }
 747
 748 /* This adds all the requests into @set if @set != NULL, otherwise
 749    all requests are sent asynchronously without waiting for response. */
 750 static inline int obd_setattr_async(struct obd_export *exp,
 751                                     struct obd_info *oinfo,
 752                                     struct obd_trans_info *oti,
 753                                     struct ptlrpc_request_set *set)
 754 {
 755         int rc;
 756         ENTRY;
 757
 758         EXP_CHECK_DT_OP(exp, setattr_async);
 759         EXP_COUNTER_INCREMENT(exp, setattr_async);
 760
 761         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 762         RETURN(rc);
 763 }
 764
 765 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 766                                int priority)
 767 {
 768         struct obd_device *obd = imp->imp_obd;
 769         int rc;
 770         ENTRY;
 771
 772         OBD_CHECK_DEV_ACTIVE(obd);
 773         OBD_CHECK_DT_OP(obd, add_conn, -EOPNOTSUPP);
 774         OBD_COUNTER_INCREMENT(obd, add_conn);
 775
 776         rc = OBP(obd, add_conn)(imp, uuid, priority);
 777         RETURN(rc);
 778 }
 779
 780 static inline int obd_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
 781 {
 782         struct obd_device *obd = imp->imp_obd;
 783         int rc;
 784         ENTRY;
 785
 786         OBD_CHECK_DEV_ACTIVE(obd);
 787         OBD_CHECK_DT_OP(obd, del_conn, -EOPNOTSUPP);
 788         OBD_COUNTER_INCREMENT(obd, del_conn);
 789
 790         rc = OBP(obd, del_conn)(imp, uuid);
 791         RETURN(rc);
 792 }
 793
 794 static inline int obd_connect(const struct lu_env *env,
 795                               struct lustre_handle *conn,struct obd_device *obd,
 796                               struct obd_uuid *cluuid,
 797                               struct obd_connect_data *d)
 798 {
 799         int rc;
 800 #ifdef LIBCFS_DEBUG
 801         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 802                                                    * check */
 803 #endif
 804         ENTRY;
 805
 806         OBD_CHECK_DEV_ACTIVE(obd);
 807         OBD_CHECK_DT_OP(obd, connect, -EOPNOTSUPP);
 808         OBD_COUNTER_INCREMENT(obd, connect);
 809
 810         rc = OBP(obd, connect)(env, conn, obd, cluuid, d);
 811         /* check that only subset is granted */
 812         LASSERT(ergo(d != NULL,
 813                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 814         RETURN(rc);
 815 }
 816
 817 static inline int obd_reconnect(const struct lu_env *env,
 818                                 struct obd_export *exp,
 819                                 struct obd_device *obd,
 820                                 struct obd_uuid *cluuid,
 821                                 struct obd_connect_data *d)
 822 {
 823         int rc;
 824 #ifdef LIBCFS_DEBUG
 825         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 826                                                    * check */
 827 #endif
 828
 829         ENTRY;
 830
 831         OBD_CHECK_DEV_ACTIVE(obd);
 832         OBD_CHECK_DT_OP(obd, reconnect, 0);
 833         OBD_COUNTER_INCREMENT(obd, reconnect);
 834
 835         rc = OBP(obd, reconnect)(env, exp, obd, cluuid, d);
 836         /* check that only subset is granted */
 837         LASSERT(ergo(d != NULL,
 838                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 839         RETURN(rc);
 840 }
 841
 842 static inline int obd_disconnect(struct obd_export *exp)
 843 {
 844         int rc;
 845         ENTRY;
 846
 847         EXP_CHECK_DT_OP(exp, disconnect);
 848         EXP_COUNTER_INCREMENT(exp, disconnect);
 849
 850         rc = OBP(exp->exp_obd, disconnect)(exp);
 851         RETURN(rc);
 852 }
 853
 854 static inline int obd_fid_init(struct obd_export *exp)
 855 {
 856         int rc;
 857         ENTRY;
 858
 859         OBD_CHECK_DT_OP(exp->exp_obd, fid_init, 0);
 860         EXP_COUNTER_INCREMENT(exp, fid_init);
 861
 862         rc = OBP(exp->exp_obd, fid_init)(exp);
 863         RETURN(rc);
 864 }
 865
 866 static inline int obd_fid_fini(struct obd_export *exp)
 867 {
 868         int rc;
 869         ENTRY;
 870
 871         OBD_CHECK_DT_OP(exp->exp_obd, fid_fini, 0);
 872         EXP_COUNTER_INCREMENT(exp, fid_fini);
 873
 874         rc = OBP(exp->exp_obd, fid_fini)(exp);
 875         RETURN(rc);
 876 }
 877
 878 static inline int obd_fid_alloc(struct obd_export *exp,
 879                                 struct lu_fid *fid,
 880                                 struct md_op_data *op_data)
 881 {
 882         int rc;
 883         ENTRY;
 884
 885         EXP_CHECK_DT_OP(exp, fid_alloc);
 886         EXP_COUNTER_INCREMENT(exp, fid_alloc);
 887
 888         rc = OBP(exp->exp_obd, fid_alloc)(exp, fid, op_data);
 889         RETURN(rc);
 890 }
 891
 892 static inline int obd_fid_delete(struct obd_export *exp,
 893                                  const struct lu_fid *fid)
 894 {
 895         int rc;
 896         ENTRY;
 897
 898         EXP_CHECK_DT_OP(exp, fid_delete);
 899         EXP_COUNTER_INCREMENT(exp, fid_delete);
 900
 901         rc = OBP(exp->exp_obd, fid_delete)(exp, fid);
 902         RETURN(rc);
 903 }
 904
 905 static inline int obd_ping(struct obd_export *exp)
 906 {
 907         int rc;
 908         ENTRY;
 909
 910         OBD_CHECK_DT_OP(exp->exp_obd, ping, 0);
 911         EXP_COUNTER_INCREMENT(exp, ping);
 912
 913         rc = OBP(exp->exp_obd, ping)(exp);
 914         RETURN(rc);
 915 }
 916
 917 static inline int obd_init_export(struct obd_export *exp)
 918 {
 919         int rc = 0;
 920
 921         ENTRY;
 922         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 923             OBP((exp)->exp_obd, init_export))
 924                 rc = OBP(exp->exp_obd, init_export)(exp);
 925         RETURN(rc);
 926 }
 927
 928 static inline int obd_destroy_export(struct obd_export *exp)
 929 {
 930         ENTRY;
 931         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 932             OBP((exp)->exp_obd, destroy_export))
 933                 OBP(exp->exp_obd, destroy_export)(exp);
 934         RETURN(0);
 935 }
 936
 937 static inline int obd_extent_calc(struct obd_export *exp,
 938                                   struct lov_stripe_md *md,
 939                                   int cmd, obd_off *offset)
 940 {
 941         int rc;
 942         ENTRY;
 943         EXP_CHECK_DT_OP(exp, extent_calc);
 944         rc = OBP(exp->exp_obd, extent_calc)(exp, md, cmd, offset);
 945         RETURN(rc);
 946 }
 947
 948 static inline struct dentry *
 949 obd_lvfs_fid2dentry(struct obd_export *exp, __u64 id_ino, __u32 gen, __u64 gr)
 950 {
 951         LASSERT(exp->exp_obd);
 952
 953         return lvfs_fid2dentry(&exp->exp_obd->obd_lvfs_ctxt, id_ino, gen, gr,
 954                                exp->exp_obd);
 955 }
 956
 957 static inline int
 958 obd_lvfs_open_llog(struct obd_export *exp, __u64 id_ino, struct dentry *dentry)
 959 {
 960         LASSERT(exp->exp_obd);
 961         CERROR("FIXME what's the story here?  This needs to be an obd fn?\n");
 962 #if 0
 963         return lvfs_open_llog(&exp->exp_obd->obd_lvfs_ctxt, id_ino,
 964                               dentry, exp->exp_obd);
 965 #endif
 966         return 0;
 967 }
 968
 969 #ifndef time_before
 970 #define time_before(t1, t2) ((long)t2 - (long)t1 > 0)
 971 #endif
 972
 973 /* @max_age is the oldest time in jiffies that we accept using a cached data.
 974  * If the cache is older than @max_age we will get a new value from the
 975  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
 976 static inline int obd_statfs_async(struct obd_device *obd,
 977                                    struct obd_info *oinfo,
 978                                    __u64 max_age,
 979                                    struct ptlrpc_request_set *rqset)
 980 {
 981         int rc = 0;
 982         ENTRY;
 983
 984         if (obd == NULL)
 985                 RETURN(-EINVAL);
 986
 987         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
 988         OBD_COUNTER_INCREMENT(obd, statfs);
 989
 990         CDEBUG(D_SUPER, "%s: osfs %p age "LPU64", max_age "LPU64"\n",
 991                obd->obd_name, &obd->obd_osfs, obd->obd_osfs_age, max_age);
 992         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
 993                 rc = OBP(obd, statfs_async)(obd, oinfo, max_age, rqset);
 994         } else {
 995                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
 996                        " objects "LPU64"/"LPU64"\n",
 997                        obd->obd_name, &obd->obd_osfs,
 998                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
 999                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1000                 spin_lock(&obd->obd_osfs_lock);
1001                 memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
1002                 spin_unlock(&obd->obd_osfs_lock);
1003                 if (oinfo->oi_cb_up)
1004                         oinfo->oi_cb_up(oinfo, 0);
1005         }
1006         RETURN(rc);
1007 }
1008
1009 static inline int obd_statfs_rqset(struct obd_device *obd,
1010                                    struct obd_statfs *osfs, __u64 max_age,
1011                                    __u32 flags)
1012 {
1013         struct ptlrpc_request_set *set = NULL;
1014         struct obd_info oinfo = { { { 0 } } };
1015         int rc = 0;
1016         ENTRY;
1017
1018         set =  ptlrpc_prep_set();
1019         if (set == NULL)
1020                 RETURN(-ENOMEM);
1021
1022         oinfo.oi_osfs = osfs;
1023         oinfo.oi_flags = flags;
1024         rc = obd_statfs_async(obd, &oinfo, max_age, set);
1025         if (rc == 0)
1026                 rc = ptlrpc_set_wait(set);
1027         ptlrpc_set_destroy(set);
1028         RETURN(rc);
1029 }
1030
1031 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1032  * If the cache is older than @max_age we will get a new value from the
1033  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1034 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
1035                              __u64 max_age, __u32 flags)
1036 {
1037         int rc = 0;
1038         ENTRY;
1039
1040         if (obd == NULL)
1041                 RETURN(-EINVAL);
1042
1043         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1044         OBD_COUNTER_INCREMENT(obd, statfs);
1045
1046         CDEBUG(D_SUPER, "osfs "LPU64", max_age "LPU64"\n",
1047                obd->obd_osfs_age, max_age);
1048         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1049                 rc = OBP(obd, statfs)(obd, osfs, max_age, flags);
1050                 if (rc == 0) {
1051                         spin_lock(&obd->obd_osfs_lock);
1052                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
1053                         obd->obd_osfs_age = cfs_time_current_64();
1054                         spin_unlock(&obd->obd_osfs_lock);
1055                 }
1056         } else {
1057                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1058                        " objects "LPU64"/"LPU64"\n",
1059                        obd->obd_name, &obd->obd_osfs,
1060                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1061                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1062                 spin_lock(&obd->obd_osfs_lock);
1063                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
1064                 spin_unlock(&obd->obd_osfs_lock);
1065         }
1066         RETURN(rc);
1067 }
1068
1069 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
1070                            struct lov_stripe_md *ea, obd_size start,
1071                            obd_size end, void *capa)
1072 {
1073         int rc;
1074         ENTRY;
1075
1076         OBD_CHECK_DT_OP(exp->exp_obd, sync, -EOPNOTSUPP);
1077         EXP_COUNTER_INCREMENT(exp, sync);
1078
1079         rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end, capa);
1080         RETURN(rc);
1081 }
1082
1083 static inline int obd_punch_rqset(struct obd_export *exp,
1084                                   struct obd_info *oinfo,
1085                                   struct obd_trans_info *oti)
1086 {
1087         struct ptlrpc_request_set *set = NULL;
1088         int rc;
1089         ENTRY;
1090
1091         EXP_CHECK_DT_OP(exp, punch);
1092         EXP_COUNTER_INCREMENT(exp, punch);
1093
1094         set =  ptlrpc_prep_set();
1095         if (set == NULL)
1096                 RETURN(-ENOMEM);
1097
1098         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, set);
1099         if (rc == 0)
1100                 rc = ptlrpc_set_wait(set);
1101         ptlrpc_set_destroy(set);
1102         RETURN(rc);
1103 }
1104
1105 static inline int obd_punch(struct obd_export *exp, struct obd_info *oinfo,
1106                             struct obd_trans_info *oti,
1107                             struct ptlrpc_request_set *rqset)
1108 {
1109         int rc;
1110         ENTRY;
1111
1112         EXP_CHECK_DT_OP(exp, punch);
1113         EXP_COUNTER_INCREMENT(exp, punch);
1114
1115         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, rqset);
1116         RETURN(rc);
1117 }
1118
1119 static inline int obd_brw(int cmd, struct obd_export *exp,
1120                           struct obd_info *oinfo, obd_count oa_bufs,
1121                           struct brw_page *pg, struct obd_trans_info *oti)
1122 {
1123         int rc;
1124         ENTRY;
1125
1126         EXP_CHECK_DT_OP(exp, brw);
1127         EXP_COUNTER_INCREMENT(exp, brw);
1128
1129         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
1130                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
1131                        "or OBD_BRW_CHECK\n");
1132                 LBUG();
1133         }
1134
1135         rc = OBP(exp->exp_obd, brw)(cmd, exp, oinfo, oa_bufs, pg, oti);
1136         RETURN(rc);
1137 }
1138
1139 static inline int obd_brw_async(int cmd, struct obd_export *exp,
1140                                 struct obd_info *oinfo, obd_count oa_bufs,
1141                                 struct brw_page *pg, struct obd_trans_info *oti,
1142                                 struct ptlrpc_request_set *set)
1143 {
1144         int rc;
1145         ENTRY;
1146
1147         EXP_CHECK_DT_OP(exp, brw_async);
1148         EXP_COUNTER_INCREMENT(exp, brw_async);
1149
1150         if (!(cmd & OBD_BRW_RWMASK)) {
1151                 CERROR("obd_brw: cmd must be OBD_BRW_READ or OBD_BRW_WRITE\n");
1152                 LBUG();
1153         }
1154
1155         rc = OBP(exp->exp_obd, brw_async)(cmd, exp, oinfo, oa_bufs, pg,oti,set);
1156         RETURN(rc);
1157 }
1158
1159 static inline int obd_brw_rqset(int cmd, struct obd_export *exp,
1160                                 struct obdo *oa, struct lov_stripe_md *lsm,
1161                                 obd_count oa_bufs, struct brw_page *pg,
1162                                 struct obd_trans_info *oti,
1163                                 struct obd_capa *ocapa)
1164 {
1165         struct ptlrpc_request_set *set = NULL;
1166         struct obd_info oinfo = { { { 0 } } };
1167         int rc = 0;
1168         ENTRY;
1169
1170         set =  ptlrpc_prep_set();
1171         if (set == NULL)
1172                 RETURN(-ENOMEM);
1173
1174         oinfo.oi_oa = oa;
1175         oinfo.oi_md = lsm;
1176         oinfo.oi_capa = ocapa;
1177         rc = obd_brw_async(cmd, exp, &oinfo, oa_bufs, pg, oti, set);
1178         if (rc == 0) {
1179                 rc = ptlrpc_set_wait(set);
1180                 if (rc)
1181                         CERROR("error from callback: rc = %d\n", rc);
1182         } else {
1183                 CDEBUG(rc == -ENOSPC ? D_INODE : D_ERROR,
1184                        "error from obd_brw_async: rc = %d\n", rc);
1185         }
1186         ptlrpc_set_destroy(set);
1187         RETURN(rc);
1188 }
1189
1190 static inline  int obd_prep_async_page(struct obd_export *exp,
1191                                        struct lov_stripe_md *lsm,
1192                                        struct lov_oinfo *loi,
1193                                        cfs_page_t *page, obd_off offset,
1194                                        struct obd_async_page_ops *ops,
1195                                        void *data, void **res)
1196 {
1197         int ret;
1198         ENTRY;
1199
1200         EXP_CHECK_DT_OP(exp, prep_async_page);
1201         EXP_COUNTER_INCREMENT(exp, prep_async_page);
1202
1203         ret = OBP(exp->exp_obd, prep_async_page)(exp, lsm, loi, page, offset,
1204                                                  ops, data, res);
1205         RETURN(ret);
1206 }
1207
1208 static inline int obd_queue_async_io(struct obd_export *exp,
1209                                      struct lov_stripe_md *lsm,
1210                                      struct lov_oinfo *loi, void *cookie,
1211                                      int cmd, obd_off off, int count,
1212                                      obd_flag brw_flags, obd_flag async_flags)
1213 {
1214         int rc;
1215         ENTRY;
1216
1217         EXP_CHECK_DT_OP(exp, queue_async_io);
1218         EXP_COUNTER_INCREMENT(exp, queue_async_io);
1219         LASSERT(cmd & OBD_BRW_RWMASK);
1220
1221         rc = OBP(exp->exp_obd, queue_async_io)(exp, lsm, loi, cookie, cmd, off,
1222                                                count, brw_flags, async_flags);
1223         RETURN(rc);
1224 }
1225
1226 static inline int obd_set_async_flags(struct obd_export *exp,
1227                                       struct lov_stripe_md *lsm,
1228                                       struct lov_oinfo *loi, void *cookie,
1229                                       obd_flag async_flags)
1230 {
1231         int rc;
1232         ENTRY;
1233
1234         EXP_CHECK_DT_OP(exp, set_async_flags);
1235         EXP_COUNTER_INCREMENT(exp, set_async_flags);
1236
1237         rc = OBP(exp->exp_obd, set_async_flags)(exp, lsm, loi, cookie,
1238                                                 async_flags);
1239         RETURN(rc);
1240 }
1241
1242 static inline int obd_queue_group_io(struct obd_export *exp,
1243                                      struct lov_stripe_md *lsm,
1244                                      struct lov_oinfo *loi,
1245                                      struct obd_io_group *oig,
1246                                      void *cookie, int cmd, obd_off off,
1247                                      int count, obd_flag brw_flags,
1248                                      obd_flag async_flags)
1249 {
1250         int rc;
1251         ENTRY;
1252
1253         EXP_CHECK_DT_OP(exp, queue_group_io);
1254         EXP_COUNTER_INCREMENT(exp, queue_group_io);
1255         LASSERT(cmd & OBD_BRW_RWMASK);
1256
1257         rc = OBP(exp->exp_obd, queue_group_io)(exp, lsm, loi, oig, cookie,
1258                                                cmd, off, count, brw_flags,
1259                                                async_flags);
1260         RETURN(rc);
1261 }
1262
1263 static inline int obd_trigger_group_io(struct obd_export *exp,
1264                                        struct lov_stripe_md *lsm,
1265                                        struct lov_oinfo *loi,
1266                                        struct obd_io_group *oig)
1267 {
1268         int rc;
1269         ENTRY;
1270
1271         EXP_CHECK_DT_OP(exp, trigger_group_io);
1272         EXP_COUNTER_INCREMENT(exp, trigger_group_io);
1273
1274         rc = OBP(exp->exp_obd, trigger_group_io)(exp, lsm, loi, oig);
1275         RETURN(rc);
1276 }
1277
1278 static inline int obd_teardown_async_page(struct obd_export *exp,
1279                                           struct lov_stripe_md *lsm,
1280                                           struct lov_oinfo *loi, void *cookie)
1281 {
1282         int rc;
1283         ENTRY;
1284
1285         EXP_CHECK_DT_OP(exp, teardown_async_page);
1286         EXP_COUNTER_INCREMENT(exp, teardown_async_page);
1287
1288         rc = OBP(exp->exp_obd, teardown_async_page)(exp, lsm, loi, cookie);
1289         RETURN(rc);
1290 }
1291
1292 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
1293                              int objcount, struct obd_ioobj *obj,
1294                              int niocount, struct niobuf_remote *remote,
1295                              struct niobuf_local *local,
1296                              struct obd_trans_info *oti,
1297                              struct lustre_capa *capa)
1298 {
1299         int rc;
1300         ENTRY;
1301
1302         EXP_CHECK_DT_OP(exp, preprw);
1303         EXP_COUNTER_INCREMENT(exp, preprw);
1304
1305         rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, niocount,
1306                                        remote, local, oti, capa);
1307         RETURN(rc);
1308 }
1309
1310 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
1311                                int objcount, struct obd_ioobj *obj,
1312                                int niocount, struct niobuf_local *local,
1313                                struct obd_trans_info *oti, int rc)
1314 {
1315         ENTRY;
1316
1317         EXP_CHECK_DT_OP(exp, commitrw);
1318         EXP_COUNTER_INCREMENT(exp, commitrw);
1319
1320         rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj, niocount,
1321                                          local, oti, rc);
1322         RETURN(rc);
1323 }
1324
1325 static inline int obd_merge_lvb(struct obd_export *exp,
1326                                 struct lov_stripe_md *lsm,
1327                                 struct ost_lvb *lvb, int kms_only)
1328 {
1329         int rc;
1330         ENTRY;
1331
1332         EXP_CHECK_DT_OP(exp, merge_lvb);
1333         EXP_COUNTER_INCREMENT(exp, merge_lvb);
1334
1335         rc = OBP(exp->exp_obd, merge_lvb)(exp, lsm, lvb, kms_only);
1336         RETURN(rc);
1337 }
1338
1339 static inline int obd_adjust_kms(struct obd_export *exp,
1340                                  struct lov_stripe_md *lsm, obd_off size,
1341                                  int shrink)
1342 {
1343         int rc;
1344         ENTRY;
1345
1346         EXP_CHECK_DT_OP(exp, adjust_kms);
1347         EXP_COUNTER_INCREMENT(exp, adjust_kms);
1348
1349         rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
1350         RETURN(rc);
1351 }
1352
1353 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1354                                 int len, void *karg, void *uarg)
1355 {
1356         int rc;
1357         ENTRY;
1358
1359         EXP_CHECK_DT_OP(exp, iocontrol);
1360         EXP_COUNTER_INCREMENT(exp, iocontrol);
1361
1362         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1363         RETURN(rc);
1364 }
1365
1366 static inline int obd_enqueue_rqset(struct obd_export *exp,
1367                                     struct obd_info *oinfo,
1368                                     struct ldlm_enqueue_info *einfo)
1369 {
1370         struct ptlrpc_request_set *set = NULL;
1371         int rc;
1372         ENTRY;
1373
1374         EXP_CHECK_DT_OP(exp, enqueue);
1375         EXP_COUNTER_INCREMENT(exp, enqueue);
1376
1377         set =  ptlrpc_prep_set();
1378         if (set == NULL)
1379                 RETURN(-ENOMEM);
1380
1381         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1382         if (rc == 0)
1383                 rc = ptlrpc_set_wait(set);
1384         ptlrpc_set_destroy(set);
1385         RETURN(rc);
1386 }
1387
1388 static inline int obd_enqueue(struct obd_export *exp,
1389                               struct obd_info *oinfo,
1390                               struct ldlm_enqueue_info *einfo,
1391                               struct ptlrpc_request_set *set)
1392 {
1393         int rc;
1394         ENTRY;
1395
1396         EXP_CHECK_DT_OP(exp, enqueue);
1397         EXP_COUNTER_INCREMENT(exp, enqueue);
1398
1399         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1400         RETURN(rc);
1401 }
1402
1403 static inline int obd_match(struct obd_export *exp, struct lov_stripe_md *ea,
1404                             __u32 type, ldlm_policy_data_t *policy, __u32 mode,
1405                             int *flags, void *data, struct lustre_handle *lockh)
1406 {
1407         int rc;
1408         ENTRY;
1409
1410         EXP_CHECK_DT_OP(exp, match);
1411         EXP_COUNTER_INCREMENT(exp, match);
1412
1413         rc = OBP(exp->exp_obd, match)(exp, ea, type, policy, mode, flags, data,
1414                                       lockh);
1415         RETURN(rc);
1416 }
1417
1418 static inline int obd_change_cbdata(struct obd_export *exp,
1419                                     struct lov_stripe_md *lsm,
1420                                     ldlm_iterator_t it, void *data)
1421 {
1422         int rc;
1423         ENTRY;
1424
1425         EXP_CHECK_DT_OP(exp, change_cbdata);
1426         EXP_COUNTER_INCREMENT(exp, change_cbdata);
1427
1428         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1429         RETURN(rc);
1430 }
1431
1432 static inline int obd_cancel(struct obd_export *exp,
1433                              struct lov_stripe_md *ea, __u32 mode,
1434                              struct lustre_handle *lockh)
1435 {
1436         int rc;
1437         ENTRY;
1438
1439         EXP_CHECK_DT_OP(exp, cancel);
1440         EXP_COUNTER_INCREMENT(exp, cancel);
1441
1442         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1443         RETURN(rc);
1444 }
1445
1446 static inline int obd_cancel_unused(struct obd_export *exp,
1447                                     struct lov_stripe_md *ea,
1448                                     int flags, void *opaque)
1449 {
1450         int rc;
1451         ENTRY;
1452
1453         EXP_CHECK_DT_OP(exp, cancel_unused);
1454         EXP_COUNTER_INCREMENT(exp, cancel_unused);
1455
1456         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1457         RETURN(rc);
1458 }
1459
1460 static inline int obd_join_lru(struct obd_export *exp,
1461                                struct lov_stripe_md *ea, int join)
1462 {
1463         int rc;
1464         ENTRY;
1465
1466         EXP_CHECK_DT_OP(exp, join_lru);
1467         EXP_COUNTER_INCREMENT(exp, join_lru);
1468
1469         rc = OBP(exp->exp_obd, join_lru)(exp, ea, join);
1470         RETURN(rc);
1471 }
1472
1473 static inline int obd_pin(struct obd_export *exp, const struct lu_fid *fid,
1474                           struct obd_capa *oc, struct obd_client_handle *handle,
1475                           int flag)
1476 {
1477         int rc;
1478         ENTRY;
1479
1480         EXP_CHECK_DT_OP(exp, pin);
1481         EXP_COUNTER_INCREMENT(exp, pin);
1482
1483         rc = OBP(exp->exp_obd, pin)(exp, fid, oc, handle, flag);
1484         RETURN(rc);
1485 }
1486
1487 static inline int obd_unpin(struct obd_export *exp,
1488                             struct obd_client_handle *handle, int flag)
1489 {
1490         int rc;
1491         ENTRY;
1492
1493         EXP_CHECK_DT_OP(exp, unpin);
1494         EXP_COUNTER_INCREMENT(exp, unpin);
1495
1496         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1497         RETURN(rc);
1498 }
1499
1500
1501 static inline void obd_import_event(struct obd_device *obd,
1502                                     struct obd_import *imp,
1503                                     enum obd_import_event event)
1504 {
1505         ENTRY;
1506         if (!obd) {
1507                 CERROR("NULL device\n");
1508                 EXIT;
1509                 return;
1510         }
1511         if (obd->obd_set_up && OBP(obd, import_event)) {
1512                 OBD_COUNTER_INCREMENT(obd, import_event);
1513                 OBP(obd, import_event)(obd, imp, event);
1514         }
1515         EXIT;
1516 }
1517
1518 static inline int obd_llog_connect(struct obd_export *exp,
1519                                    struct llogd_conn_body *body)
1520 {
1521         int rc;
1522         ENTRY;
1523
1524         OBD_CHECK_DT_OP(exp->exp_obd, llog_connect, 0);
1525         EXP_COUNTER_INCREMENT(exp, llog_connect);
1526
1527         rc = OBP(exp->exp_obd, llog_connect)(exp, body);
1528         RETURN(rc);
1529 }
1530
1531
1532 static inline int obd_notify(struct obd_device *obd,
1533                              struct obd_device *watched,
1534                              enum obd_notify_event ev,
1535                              void *data)
1536 {
1537         int rc;
1538         ENTRY;
1539         OBD_CHECK_DEV(obd);
1540
1541         /* the check for async_recov is a complete hack - I'm hereby
1542            overloading the meaning to also mean "this was called from
1543            mds_postsetup".  I know that my mds is able to handle notifies
1544            by this point, and it needs to get them to execute mds_postrecov. */
1545         if (!obd->obd_set_up && !obd->obd_async_recov) {
1546                 CDEBUG(D_HA, "obd %s not set up\n", obd->obd_name);
1547                 RETURN(-EINVAL);
1548         }
1549
1550         if (!OBP(obd, notify)) {
1551                 CERROR("obd %s has no notify handler\n", obd->obd_name);
1552                 RETURN(-ENOSYS);
1553         }
1554
1555         OBD_COUNTER_INCREMENT(obd, notify);
1556         rc = OBP(obd, notify)(obd, watched, ev, data);
1557         RETURN(rc);
1558 }
1559
1560 static inline int obd_notify_observer(struct obd_device *observer,
1561                                       struct obd_device *observed,
1562                                       enum obd_notify_event ev,
1563                                       void *data)
1564 {
1565         int rc1;
1566         int rc2;
1567
1568         struct obd_notify_upcall *onu;
1569
1570         if (observer->obd_observer)
1571                 rc1 = obd_notify(observer->obd_observer, observed, ev, data);
1572         else
1573                 rc1 = 0;
1574         /*
1575          * Also, call non-obd listener, if any
1576          */
1577         onu = &observer->obd_upcall;
1578         if (onu->onu_upcall != NULL)
1579                 rc2 = onu->onu_upcall(observer, observed, ev, onu->onu_owner);
1580         else
1581                 rc2 = 0;
1582
1583         return rc1 ? rc1 : rc2;
1584 }
1585
1586 static inline int obd_quotacheck(struct obd_export *exp,
1587                                  struct obd_quotactl *oqctl)
1588 {
1589         int rc;
1590         ENTRY;
1591
1592         EXP_CHECK_DT_OP(exp, quotacheck);
1593         EXP_COUNTER_INCREMENT(exp, quotacheck);
1594
1595         rc = OBP(exp->exp_obd, quotacheck)(exp, oqctl);
1596         RETURN(rc);
1597 }
1598
1599 static inline int obd_quotactl(struct obd_export *exp,
1600                                struct obd_quotactl *oqctl)
1601 {
1602         int rc;
1603         ENTRY;
1604
1605         EXP_CHECK_DT_OP(exp, quotactl);
1606         EXP_COUNTER_INCREMENT(exp, quotactl);
1607
1608         rc = OBP(exp->exp_obd, quotactl)(exp, oqctl);
1609         RETURN(rc);
1610 }
1611
1612 static inline int obd_health_check(struct obd_device *obd)
1613 {
1614         /* returns: 0 on healthy
1615          *         >0 on unhealthy + reason code/flag
1616          *            however the only suppored reason == 1 right now
1617          *            We'll need to define some better reasons
1618          *            or flags in the future.
1619          *         <0 on error
1620          */
1621         int rc;
1622         ENTRY;
1623
1624         /* don't use EXP_CHECK_DT_OP, because NULL method is normal here */
1625         if (obd == NULL || !OBT(obd)) {
1626                 CERROR("cleaned up obd\n");
1627                 RETURN(-EOPNOTSUPP);
1628         }
1629         if (!obd->obd_set_up || obd->obd_stopping)
1630                 RETURN(0);
1631         if (!OBP(obd, health_check))
1632                 RETURN(0);
1633
1634         rc = OBP(obd, health_check)(obd);
1635         RETURN(rc);
1636 }
1637
1638 static inline int obd_register_observer(struct obd_device *obd,
1639                                         struct obd_device *observer)
1640 {
1641         ENTRY;
1642         OBD_CHECK_DEV(obd);
1643         if (obd->obd_observer && observer)
1644                 RETURN(-EALREADY);
1645         obd->obd_observer = observer;
1646         RETURN(0);
1647 }
1648
1649 /* metadata helpers */
1650 static inline int md_getstatus(struct obd_export *exp,
1651                                struct lu_fid *fid, struct obd_capa **pc)
1652 {
1653         int rc;
1654         ENTRY;
1655
1656         EXP_CHECK_MD_OP(exp, getstatus);
1657         EXP_MD_COUNTER_INCREMENT(exp, getstatus);
1658         rc = MDP(exp->exp_obd, getstatus)(exp, fid, pc);
1659         RETURN(rc);
1660 }
1661
1662 static inline int md_getattr(struct obd_export *exp, const struct lu_fid *fid,
1663                              struct obd_capa *oc, obd_valid valid, int ea_size,
1664                              struct ptlrpc_request **request)
1665 {
1666         int rc;
1667         ENTRY;
1668         EXP_CHECK_MD_OP(exp, getattr);
1669         EXP_MD_COUNTER_INCREMENT(exp, getattr);
1670         rc = MDP(exp->exp_obd, getattr)(exp, fid, oc, valid,
1671                                         ea_size, request);
1672         RETURN(rc);
1673 }
1674
1675 static inline int md_change_cbdata(struct obd_export *exp,
1676                                    const struct lu_fid *fid,
1677                                    ldlm_iterator_t it, void *data)
1678 {
1679         int rc;
1680         ENTRY;
1681         EXP_CHECK_MD_OP(exp, change_cbdata);
1682         EXP_MD_COUNTER_INCREMENT(exp, change_cbdata);
1683         rc = MDP(exp->exp_obd, change_cbdata)(exp, fid, it, data);
1684         RETURN(rc);
1685 }
1686
1687 static inline int md_close(struct obd_export *exp, struct md_op_data *op_data,
1688                            struct md_open_data *mod,
1689                            struct ptlrpc_request **request)
1690 {
1691         int rc;
1692         ENTRY;
1693         EXP_CHECK_MD_OP(exp, close);
1694         EXP_MD_COUNTER_INCREMENT(exp, close);
1695         rc = MDP(exp->exp_obd, close)(exp, op_data, mod, request);
1696         RETURN(rc);
1697 }
1698
1699 static inline int md_create(struct obd_export *exp, struct md_op_data *op_data,
1700                             const void *data, int datalen, int mode, __u32 uid,
1701                             __u32 gid, __u32 cap_effective, __u64 rdev,
1702                             struct ptlrpc_request **request)
1703 {
1704         int rc;
1705         ENTRY;
1706         EXP_CHECK_MD_OP(exp, create);
1707         EXP_MD_COUNTER_INCREMENT(exp, create);
1708         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1709                                        uid, gid, cap_effective, rdev, request);
1710         RETURN(rc);
1711 }
1712
1713 static inline int md_done_writing(struct obd_export *exp,
1714                                   struct md_op_data *op_data,
1715                                   struct md_open_data *mod)
1716 {
1717         int rc;
1718         ENTRY;
1719         EXP_CHECK_MD_OP(exp, done_writing);
1720         EXP_MD_COUNTER_INCREMENT(exp, done_writing);
1721         rc = MDP(exp->exp_obd, done_writing)(exp, op_data, mod);
1722         RETURN(rc);
1723 }
1724
1725 static inline int md_enqueue(struct obd_export *exp,
1726                              struct ldlm_enqueue_info *einfo,
1727                              struct lookup_intent *it,
1728                              struct md_op_data *op_data,
1729                              struct lustre_handle *lockh,
1730                              void *lmm, int lmmsize,
1731                              int extra_lock_flags)
1732 {
1733         int rc;
1734         ENTRY;
1735         EXP_CHECK_MD_OP(exp, enqueue);
1736         EXP_MD_COUNTER_INCREMENT(exp, enqueue);
1737         rc = MDP(exp->exp_obd, enqueue)(exp, einfo, it, op_data, lockh,
1738                                         lmm, lmmsize, extra_lock_flags);
1739         RETURN(rc);
1740 }
1741
1742 static inline int md_getattr_name(struct obd_export *exp,
1743                                   const struct lu_fid *fid, struct obd_capa *oc,
1744                                   const char *name, int namelen,
1745                                   obd_valid valid, int ea_size, __u32 suppgid,
1746                                   struct ptlrpc_request **request)
1747 {
1748         int rc;
1749         ENTRY;
1750         EXP_CHECK_MD_OP(exp, getattr_name);
1751         EXP_MD_COUNTER_INCREMENT(exp, getattr_name);
1752         rc = MDP(exp->exp_obd, getattr_name)(exp, fid, oc, name, namelen,
1753                                              valid, ea_size, suppgid, request);
1754         RETURN(rc);
1755 }
1756
1757 static inline int md_intent_lock(struct obd_export *exp,
1758                                  struct md_op_data *op_data, void *lmm,
1759                                  int lmmsize, struct lookup_intent *it,
1760                                  int flags, struct ptlrpc_request **reqp,
1761                                  ldlm_blocking_callback cb_blocking,
1762                                  int extra_lock_flags)
1763 {
1764         int rc;
1765         ENTRY;
1766         EXP_CHECK_MD_OP(exp, intent_lock);
1767         EXP_MD_COUNTER_INCREMENT(exp, intent_lock);
1768         rc = MDP(exp->exp_obd, intent_lock)(exp, op_data, lmm, lmmsize,
1769                                             it, flags, reqp, cb_blocking,
1770                                             extra_lock_flags);
1771         RETURN(rc);
1772 }
1773
1774 static inline int md_link(struct obd_export *exp, struct md_op_data *op_data,
1775                           struct ptlrpc_request **request)
1776 {
1777         int rc;
1778         ENTRY;
1779         EXP_CHECK_MD_OP(exp, link);
1780         EXP_MD_COUNTER_INCREMENT(exp, link);
1781         rc = MDP(exp->exp_obd, link)(exp, op_data, request);
1782         RETURN(rc);
1783 }
1784
1785 static inline int md_rename(struct obd_export *exp, struct md_op_data *op_data,
1786                             const char *old, int oldlen, const char *new,
1787                             int newlen, struct ptlrpc_request **request)
1788 {
1789         int rc;
1790         ENTRY;
1791         EXP_CHECK_MD_OP(exp, rename);
1792         EXP_MD_COUNTER_INCREMENT(exp, rename);
1793         rc = MDP(exp->exp_obd, rename)(exp, op_data, old, oldlen, new,
1794                                        newlen, request);
1795         RETURN(rc);
1796 }
1797
1798 static inline int md_is_subdir(struct obd_export *exp,
1799                                const struct lu_fid *pfid,
1800                                const struct lu_fid *cfid,
1801                                struct ptlrpc_request **request)
1802 {
1803         int rc;
1804         ENTRY;
1805         EXP_CHECK_MD_OP(exp, is_subdir);
1806         EXP_MD_COUNTER_INCREMENT(exp, is_subdir);
1807         rc = MDP(exp->exp_obd, is_subdir)(exp, pfid, cfid, request);
1808         RETURN(rc);
1809 }
1810
1811 static inline int md_setattr(struct obd_export *exp, struct md_op_data *op_data,
1812                              void *ea, int ealen, void *ea2, int ea2len,
1813                              struct ptlrpc_request **request,
1814                              struct md_open_data **mod)
1815 {
1816         int rc;
1817         ENTRY;
1818         EXP_CHECK_MD_OP(exp, setattr);
1819         EXP_MD_COUNTER_INCREMENT(exp, setattr);
1820         rc = MDP(exp->exp_obd, setattr)(exp, op_data, ea, ealen,
1821                                         ea2, ea2len, request, mod);
1822         RETURN(rc);
1823 }
1824
1825 static inline int md_sync(struct obd_export *exp, const struct lu_fid *fid,
1826                           struct obd_capa *oc, struct ptlrpc_request **request)
1827 {
1828         int rc;
1829         ENTRY;
1830         EXP_CHECK_MD_OP(exp, sync);
1831         EXP_MD_COUNTER_INCREMENT(exp, sync);
1832         rc = MDP(exp->exp_obd, sync)(exp, fid, oc, request);
1833         RETURN(rc);
1834 }
1835
1836 static inline int md_readpage(struct obd_export *exp, const struct lu_fid *fid,
1837                               struct obd_capa *oc, __u64 offset,
1838                               struct page *page,
1839                               struct ptlrpc_request **request)
1840 {
1841         int rc;
1842         ENTRY;
1843         EXP_CHECK_MD_OP(exp, readpage);
1844         EXP_MD_COUNTER_INCREMENT(exp, readpage);
1845         rc = MDP(exp->exp_obd, readpage)(exp, fid, oc, offset, page, request);
1846         RETURN(rc);
1847 }
1848
1849 static inline int md_unlink(struct obd_export *exp, struct md_op_data *op_data,
1850                             struct ptlrpc_request **request)
1851 {
1852         int rc;
1853         ENTRY;
1854         EXP_CHECK_MD_OP(exp, unlink);
1855         EXP_MD_COUNTER_INCREMENT(exp, unlink);
1856         rc = MDP(exp->exp_obd, unlink)(exp, op_data, request);
1857         RETURN(rc);
1858 }
1859
1860 static inline int md_get_lustre_md(struct obd_export *exp,
1861                                    struct ptlrpc_request *req,
1862                                    struct obd_export *dt_exp,
1863                                    struct obd_export *md_exp,
1864                                    struct lustre_md *md)
1865 {
1866         ENTRY;
1867         EXP_CHECK_MD_OP(exp, get_lustre_md);
1868         EXP_MD_COUNTER_INCREMENT(exp, get_lustre_md);
1869         RETURN(MDP(exp->exp_obd, get_lustre_md)(exp, req, dt_exp, md_exp, md));
1870 }
1871
1872 static inline int md_free_lustre_md(struct obd_export *exp,
1873                                     struct lustre_md *md)
1874 {
1875         ENTRY;
1876         EXP_CHECK_MD_OP(exp, free_lustre_md);
1877         EXP_MD_COUNTER_INCREMENT(exp, free_lustre_md);
1878         RETURN(MDP(exp->exp_obd, free_lustre_md)(exp, md));
1879 }
1880
1881 static inline int md_setxattr(struct obd_export *exp,
1882                               const struct lu_fid *fid, struct obd_capa *oc,
1883                               obd_valid valid, const char *name,
1884                               const char *input, int input_size,
1885                               int output_size, int flags, __u32 suppgid,
1886                               struct ptlrpc_request **request)
1887 {
1888         ENTRY;
1889         EXP_CHECK_MD_OP(exp, setxattr);
1890         EXP_MD_COUNTER_INCREMENT(exp, setxattr);
1891         RETURN(MDP(exp->exp_obd, setxattr)(exp, fid, oc, valid, name, input,
1892                                            input_size, output_size, flags,
1893                                            suppgid, request));
1894 }
1895
1896 static inline int md_getxattr(struct obd_export *exp,
1897                               const struct lu_fid *fid, struct obd_capa *oc,
1898                               obd_valid valid, const char *name,
1899                               const char *input, int input_size,
1900                               int output_size, int flags,
1901                               struct ptlrpc_request **request)
1902 {
1903         ENTRY;
1904         EXP_CHECK_MD_OP(exp, getxattr);
1905         EXP_MD_COUNTER_INCREMENT(exp, getxattr);
1906         RETURN(MDP(exp->exp_obd, getxattr)(exp, fid, oc, valid, name, input,
1907                                            input_size, output_size, flags,
1908                                            request));
1909 }
1910
1911 static inline int md_set_open_replay_data(struct obd_export *exp,
1912                                           struct obd_client_handle *och,
1913                                           struct ptlrpc_request *open_req)
1914 {
1915         ENTRY;
1916         EXP_CHECK_MD_OP(exp, set_open_replay_data);
1917         EXP_MD_COUNTER_INCREMENT(exp, set_open_replay_data);
1918         RETURN(MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req));
1919 }
1920
1921 static inline int md_clear_open_replay_data(struct obd_export *exp,
1922                                             struct obd_client_handle *och)
1923 {
1924         ENTRY;
1925         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
1926         EXP_MD_COUNTER_INCREMENT(exp, clear_open_replay_data);
1927         RETURN(MDP(exp->exp_obd, clear_open_replay_data)(exp, och));
1928 }
1929
1930 static inline int md_set_lock_data(struct obd_export *exp,
1931                                    __u64 *lockh, void *data)
1932 {
1933         ENTRY;
1934         EXP_CHECK_MD_OP(exp, set_lock_data);
1935         EXP_MD_COUNTER_INCREMENT(exp, set_lock_data);
1936         RETURN(MDP(exp->exp_obd, set_lock_data)(exp, lockh, data));
1937 }
1938
1939 static inline int md_cancel_unused(struct obd_export *exp,
1940                                    const struct lu_fid *fid,
1941                                    ldlm_policy_data_t *policy,
1942                                    ldlm_mode_t mode, int flags, void *opaque)
1943 {
1944         int rc;
1945         ENTRY;
1946
1947         EXP_CHECK_MD_OP(exp, cancel_unused);
1948         EXP_MD_COUNTER_INCREMENT(exp, cancel_unused);
1949
1950         rc = MDP(exp->exp_obd, cancel_unused)(exp, fid, policy, mode,
1951                                               flags, opaque);
1952         RETURN(rc);
1953 }
1954
1955 static inline ldlm_mode_t md_lock_match(struct obd_export *exp, int flags,
1956                                         const struct lu_fid *fid,
1957                                         ldlm_type_t type,
1958                                         ldlm_policy_data_t *policy,
1959                                         ldlm_mode_t mode,
1960                                         struct lustre_handle *lockh)
1961 {
1962         ENTRY;
1963         EXP_CHECK_MD_OP(exp, lock_match);
1964         EXP_MD_COUNTER_INCREMENT(exp, lock_match);
1965         RETURN(MDP(exp->exp_obd, lock_match)(exp, flags, fid, type,
1966                                              policy, mode, lockh));
1967 }
1968
1969 static inline int md_init_ea_size(struct obd_export *exp, int easize,
1970                                   int def_asize, int cookiesize)
1971 {
1972         ENTRY;
1973         EXP_CHECK_MD_OP(exp, init_ea_size);
1974         EXP_MD_COUNTER_INCREMENT(exp, init_ea_size);
1975         RETURN(MDP(exp->exp_obd, init_ea_size)(exp, easize, def_asize,
1976                                                cookiesize));
1977 }
1978
1979 static inline int md_get_remote_perm(struct obd_export *exp,
1980                                      const struct lu_fid *fid,
1981                                      struct obd_capa *oc, __u32 suppgid,
1982                                      struct ptlrpc_request **request)
1983 {
1984         ENTRY;
1985         EXP_CHECK_MD_OP(exp, get_remote_perm);
1986         EXP_MD_COUNTER_INCREMENT(exp, get_remote_perm);
1987         RETURN(MDP(exp->exp_obd, get_remote_perm)(exp, fid, oc, suppgid,
1988                                                   request));
1989 }
1990
1991 static inline int md_renew_capa(struct obd_export *exp, struct obd_capa *ocapa,
1992                                 renew_capa_cb_t cb)
1993 {
1994         int rc;
1995         ENTRY;
1996         EXP_CHECK_MD_OP(exp, renew_capa);
1997         EXP_MD_COUNTER_INCREMENT(exp, renew_capa);
1998         rc = MDP(exp->exp_obd, renew_capa)(exp, ocapa, cb);
1999         RETURN(rc);
2000 }
2001
2002 /* OBD Metadata Support */
2003
2004 extern int obd_init_caches(void);
2005 extern void obd_cleanup_caches(void);
2006
2007 /* support routines */
2008 extern cfs_mem_cache_t *obdo_cachep;
2009
2010 #define OBDO_ALLOC(ptr)                                                       \
2011 do {                                                                          \
2012         OBD_SLAB_ALLOC_PTR((ptr), obdo_cachep);                               \
2013 } while(0)
2014
2015 #define OBDO_FREE(ptr)                                                        \
2016 do {                                                                          \
2017         OBD_SLAB_FREE_PTR((ptr), obdo_cachep);                                \
2018 } while(0)
2019
2020
2021 static inline void obdo2fid(struct obdo *oa, struct lu_fid *fid)
2022 {
2023         /* something here */
2024 }
2025
2026 static inline void fid2obdo(struct lu_fid *fid, struct obdo *oa)
2027 {
2028         /* something here */
2029 }
2030
2031 /* I'm as embarrassed about this as you are.
2032  *
2033  * <shaver> // XXX do not look into _superhack with remaining eye
2034  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
2035 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
2036
2037 /* sysctl.c */
2038 extern void obd_sysctl_init (void);
2039 extern void obd_sysctl_clean (void);
2040
2041 /* uuid.c  */
2042 typedef __u8 class_uuid_t[16];
2043 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
2044
2045 /* lustre_peer.c    */
2046 int lustre_uuid_to_peer(const char *uuid, lnet_nid_t *peer_nid, int index);
2047 int class_add_uuid(const char *uuid, __u64 nid);
2048 int class_del_uuid (const char *uuid);
2049 void class_init_uuidlist(void);
2050 void class_exit_uuidlist(void);
2051
2052 /* mea.c */
2053 int mea_name2idx(struct lmv_stripe_md *mea, const char *name, int namelen);
2054 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
2055
2056 /* prng.c */
2057 void ll_generate_random_uuid(class_uuid_t uuid_out);
2058
2059 #endif /* __LINUX_OBD_CLASS_H */