lustre/include/obd_class.h

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