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  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see
  20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright  2008 Sun Microsystems, Inc. All rights reserved
  30  * Use is subject to license terms.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  */
  36 #ifndef __CLASS_OBD_H
  37 #define __CLASS_OBD_H
  38
  39 #ifndef __KERNEL__
  40 # include <liblustre.h>
  41 #endif
  42
  43 #include <obd_support.h>
  44 #include <lustre_import.h>
  45 #include <lustre_net.h>
  46 #include <obd.h>
  47 #include <lustre_lib.h>
  48 #include <lustre/lustre_idl.h>
  49 #include <lprocfs_status.h>
  50
  51 #if defined(__linux__)
  52 #include <linux/obd_class.h>
  53 #elif defined(__APPLE__)
  54 #include <darwin/obd_class.h>
  55 #elif defined(__WINNT__)
  56 #include <winnt/obd_class.h>
  57 #else
  58 #error Unsupported operating system.
  59 #endif
  60
  61 /* OBD Device Declarations */
  62 extern struct obd_device *obd_devs[MAX_OBD_DEVICES];
  63 extern spinlock_t obd_dev_lock;
  64
  65 /* OBD Operations Declarations */
  66 extern struct obd_device *class_conn2obd(struct lustre_handle *);
  67 extern struct obd_device *class_exp2obd(struct obd_export *);
  68
  69 struct lu_device_type;
  70
  71 /* genops.c */
  72 struct obd_export *class_conn2export(struct lustre_handle *);
  73 int class_register_type(struct obd_ops *, struct md_ops *,
  74                         struct lprocfs_vars *, const char *nm,
  75                         struct lu_device_type *ldt);
  76 int class_unregister_type(const char *nm);
  77
  78 struct obd_device *class_newdev(const char *type_name, const char *name);
  79 void class_release_dev(struct obd_device *obd);
  80
  81 int class_name2dev(const char *name);
  82 struct obd_device *class_name2obd(const char *name);
  83 int class_uuid2dev(struct obd_uuid *uuid);
  84 struct obd_device *class_uuid2obd(struct obd_uuid *uuid);
  85 void class_obd_list(void);
  86 struct obd_device * class_find_client_obd(struct obd_uuid *tgt_uuid,
  87                                           const char * typ_name,
  88                                           struct obd_uuid *grp_uuid);
  89 struct obd_device * class_find_client_notype(struct obd_uuid *tgt_uuid,
  90                                              struct obd_uuid *grp_uuid);
  91 struct obd_device * class_devices_in_group(struct obd_uuid *grp_uuid,
  92                                            int *next);
  93 struct obd_device * class_num2obd(int num);
  94
  95 int oig_init(struct obd_io_group **oig);
  96 int oig_add_one(struct obd_io_group *oig, struct oig_callback_context *occ);
  97 void oig_complete_one(struct obd_io_group *oig,
  98                       struct oig_callback_context *occ, int rc);
  99 void oig_release(struct obd_io_group *oig);
 100 int oig_wait(struct obd_io_group *oig);
 101
 102 char *obd_export_nid2str(struct obd_export *exp);
 103
 104 int obd_export_evict_by_nid(struct obd_device *obd, const char *nid);
 105 int obd_export_evict_by_uuid(struct obd_device *obd, const char *uuid);
 106
 107 int obd_zombie_impexp_init(void);
 108 void obd_zombie_impexp_stop(void);
 109 void obd_zombie_impexp_cull(void);
 110
 111 /* obd_config.c */
 112 int class_process_config(struct lustre_cfg *lcfg);
 113 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
 114                              struct lustre_cfg *lcfg, void *data);
 115 int class_attach(struct lustre_cfg *lcfg);
 116 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
 117 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg);
 118 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg);
 119 struct obd_device *class_incref(struct obd_device *obd);
 120 void class_decref(struct obd_device *obd);
 121
 122 /*obdecho*/
 123 #ifdef LPROCFS
 124 extern void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars);
 125 #else
 126 static inline void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars)
 127 {
 128         memset(lvars, 0, sizeof(*lvars));
 129 }
 130 #endif
 131
 132 #define CFG_F_START     0x01   /* Set when we start updating from a log */
 133 #define CFG_F_MARKER    0x02   /* We are within a maker */
 134 #define CFG_F_SKIP      0x04   /* We should ignore this cfg command */
 135 #define CFG_F_COMPAT146 0x08   /* Allow old-style logs */
 136 #define CFG_F_EXCLUDE   0x10   /* OST exclusion list */
 137
 138 /* Passed as data param to class_config_parse_llog */
 139 struct config_llog_instance {
 140         char *              cfg_instance;
 141         struct super_block *cfg_sb;
 142         struct obd_uuid     cfg_uuid;
 143         int                 cfg_last_idx; /* for partial llog processing */
 144         int                 cfg_flags;
 145 };
 146 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
 147                             struct config_llog_instance *cfg);
 148 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
 149                            struct config_llog_instance *cfg);
 150
 151 /* list of active configuration logs  */
 152 struct config_llog_data {
 153         char               *cld_logname;
 154         struct ldlm_res_id  cld_resid;
 155         struct config_llog_instance cld_cfg;
 156         struct list_head    cld_list_chain;
 157         atomic_t            cld_refcount;
 158         struct obd_export  *cld_mgcexp;
 159         unsigned int        cld_stopping:1, /* we were told to stop watching */
 160                             cld_lostlock:1; /* lock not requeued */
 161 };
 162
 163 struct lustre_profile {
 164         struct list_head lp_list;
 165         char            *lp_profile;
 166         char            *lp_dt;
 167         char            *lp_md;
 168 };
 169
 170 struct lustre_profile *class_get_profile(const char * prof);
 171 void class_del_profile(const char *prof);
 172 void class_del_profiles(void);
 173
 174 #define class_export_rpc_get(exp)                                       \
 175 ({                                                                      \
 176         atomic_inc(&(exp)->exp_rpc_count);                              \
 177         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",    \
 178                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 179         class_export_get(exp);                                          \
 180 })
 181
 182 #define class_export_rpc_put(exp)                                       \
 183 ({                                                                      \
 184         atomic_dec(&(exp)->exp_rpc_count);                              \
 185         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",    \
 186                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 187         class_export_put(exp);                                          \
 188 })
 189
 190 /* genops.c */
 191 #define class_export_get(exp)                                                  \
 192 ({                                                                             \
 193         struct obd_export *exp_ = exp;                                         \
 194         atomic_inc(&exp_->exp_refcount);                                       \
 195         CDEBUG(D_INFO, "GETting export %p : new refcount %d\n", exp_,          \
 196                atomic_read(&exp_->exp_refcount));                              \
 197         exp_;                                                                  \
 198 })
 199
 200 #define class_export_put(exp)                                                  \
 201 do {                                                                           \
 202         LASSERT((exp) != NULL);                                                \
 203         CDEBUG(D_INFO, "PUTting export %p : new refcount %d\n", (exp),         \
 204                atomic_read(&(exp)->exp_refcount) - 1);                         \
 205         LASSERT(atomic_read(&(exp)->exp_refcount) > 0);                        \
 206         LASSERT(atomic_read(&(exp)->exp_refcount) < 0x5a5a5a);                 \
 207         __class_export_put(exp);                                               \
 208 } while (0)
 209
 210 void __class_export_put(struct obd_export *);
 211 struct obd_export *class_new_export(struct obd_device *obddev,
 212                                     struct obd_uuid *cluuid);
 213 void class_unlink_export(struct obd_export *exp);
 214
 215 struct obd_import *class_import_get(struct obd_import *);
 216 void class_import_put(struct obd_import *);
 217 struct obd_import *class_new_import(struct obd_device *obd);
 218 void class_destroy_import(struct obd_import *exp);
 219
 220 struct obd_type *class_search_type(const char *name);
 221 struct obd_type *class_get_type(const char *name);
 222 void class_put_type(struct obd_type *type);
 223 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 224                   struct obd_uuid *cluuid);
 225 int class_disconnect(struct obd_export *exp);
 226 void class_fail_export(struct obd_export *exp);
 227 void class_disconnect_exports(struct obd_device *obddev);
 228 int class_disconnect_stale_exports(struct obd_device *,
 229                                     int (*test_export)(struct obd_export *));
 230 int class_manual_cleanup(struct obd_device *obd);
 231
 232 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_flag valid);
 233 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
 234 void obdo_from_iattr(struct obdo *oa, struct iattr *attr,
 235                      unsigned int ia_valid);
 236 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, obd_flag valid);
 237 void md_from_obdo(struct md_op_data *op_data, struct obdo *oa, obd_flag valid);
 238 void obdo_from_md(struct obdo *oa, struct md_op_data *op_data,
 239                   unsigned int valid);
 240
 241 #define OBT(dev)        (dev)->obd_type
 242 #define OBP(dev, op)    (dev)->obd_type->typ_dt_ops->o_ ## op
 243 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
 244 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 245
 246 /* Ensure obd_setup: used for cleanup which must be called
 247    while obd is stopping */
 248 #define OBD_CHECK_DEV(obd)                                      \
 249 do {                                                            \
 250         if (!(obd)) {                                           \
 251                 CERROR("NULL device\n");                        \
 252                 RETURN(-ENODEV);                                \
 253         }                                                       \
 254 } while (0)
 255
 256 /* ensure obd_setup and !obd_stopping */
 257 #define OBD_CHECK_DEV_ACTIVE(obd)                               \
 258 do {                                                            \
 259         OBD_CHECK_DEV(obd);                                     \
 260         if (!(obd)->obd_set_up || (obd)->obd_stopping) {        \
 261                 CERROR("Device %d not setup\n",                 \
 262                        (obd)->obd_minor);                       \
 263                 RETURN(-ENODEV);                                \
 264         }                                                       \
 265 } while (0)
 266
 267
 268 #ifdef LPROCFS
 269 #define OBD_COUNTER_OFFSET(op)                                  \
 270         ((offsetof(struct obd_ops, o_ ## op) -                  \
 271           offsetof(struct obd_ops, o_iocontrol))                \
 272          / sizeof(((struct obd_ops *)(0))->o_iocontrol))
 273
 274 #define OBD_COUNTER_INCREMENT(obdx, op)                           \
 275         if ((obdx)->obd_stats != NULL) {                          \
 276                 unsigned int coffset;                             \
 277                 coffset = (unsigned int)((obdx)->obd_cntr_base) + \
 278                         OBD_COUNTER_OFFSET(op);                   \
 279                 LASSERT(coffset < (obdx)->obd_stats->ls_num);     \
 280                 lprocfs_counter_incr((obdx)->obd_stats, coffset); \
 281         }
 282
 283 #define EXP_COUNTER_INCREMENT(export, op)                                    \
 284         if ((export)->exp_obd->obd_stats != NULL) {                          \
 285                 unsigned int coffset;                                        \
 286                 coffset = (unsigned int)((export)->exp_obd->obd_cntr_base) + \
 287                         OBD_COUNTER_OFFSET(op);                              \
 288                 LASSERT(coffset < (export)->exp_obd->obd_stats->ls_num);     \
 289                 lprocfs_counter_incr((export)->exp_obd->obd_stats, coffset); \
 290                 if ((export)->exp_nid_stats != NULL &&                       \
 291                     (export)->exp_nid_stats->nid_stats != NULL)              \
 292                         lprocfs_counter_incr(                                \
 293                                 (export)->exp_nid_stats->nid_stats, coffset);\
 294         }
 295
 296 #define MD_COUNTER_OFFSET(op)                                   \
 297         ((offsetof(struct md_ops, m_ ## op) -                   \
 298           offsetof(struct md_ops, m_getstatus))                 \
 299          / sizeof(((struct md_ops *)(0))->m_getstatus))
 300
 301 #define MD_COUNTER_INCREMENT(obdx, op)                           \
 302         if ((obd)->md_stats != NULL) {                           \
 303                 unsigned int coffset;                            \
 304                 coffset = (unsigned int)((obdx)->md_cntr_base) + \
 305                         MD_COUNTER_OFFSET(op);                   \
 306                 LASSERT(coffset < (obdx)->md_stats->ls_num);     \
 307                 lprocfs_counter_incr((obdx)->md_stats, coffset); \
 308         }
 309
 310 #define EXP_MD_COUNTER_INCREMENT(export, op)                                 \
 311         if ((export)->exp_obd->obd_stats != NULL) {                          \
 312                 unsigned int coffset;                                        \
 313                 coffset = (unsigned int)((export)->exp_obd->md_cntr_base) +  \
 314                         MD_COUNTER_OFFSET(op);                               \
 315                 LASSERT(coffset < (export)->exp_obd->md_stats->ls_num);      \
 316                 lprocfs_counter_incr((export)->exp_obd->md_stats, coffset);  \
 317                 if ((export)->exp_md_stats != NULL)                          \
 318                         lprocfs_counter_incr(                                \
 319                                 (export)->exp_md_stats, coffset);            \
 320         }
 321
 322 #else
 323 #define OBD_COUNTER_OFFSET(op)
 324 #define OBD_COUNTER_INCREMENT(obd, op)
 325 #define EXP_COUNTER_INCREMENT(exp, op)
 326 #define MD_COUNTER_INCREMENT(obd, op)
 327 #define EXP_MD_COUNTER_INCREMENT(exp, op)
 328 #endif
 329
 330 #define OBD_CHECK_MD_OP(obd, op, err)                           \
 331 do {                                                            \
 332         if (!OBT(obd) || !MDP((obd), op)) {                     \
 333                 if (err)                                        \
 334                         CERROR("md_" #op ": dev %s/%d no operation\n", \
 335                                obd->obd_name, obd->obd_minor);  \
 336                 RETURN(err);                                    \
 337         }                                                       \
 338 } while (0)
 339
 340 #define EXP_CHECK_MD_OP(exp, op)                                \
 341 do {                                                            \
 342         if ((exp) == NULL) {                                    \
 343                 CERROR("obd_" #op ": NULL export\n");           \
 344                 RETURN(-ENODEV);                                \
 345         }                                                       \
 346         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 347                 CERROR("obd_" #op ": cleaned up obd\n");        \
 348                 RETURN(-EOPNOTSUPP);                            \
 349         }                                                       \
 350         if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
 351                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 352                        (exp)->exp_obd->obd_name,                \
 353                        (exp)->exp_obd->obd_minor);              \
 354                 RETURN(-EOPNOTSUPP);                            \
 355         }                                                       \
 356 } while (0)
 357
 358
 359 #define OBD_CHECK_DT_OP(obd, op, err)                           \
 360 do {                                                            \
 361         if (!OBT(obd) || !OBP((obd), op)) {                     \
 362                 if (err)                                        \
 363                         CERROR("obd_" #op ": dev %d no operation\n",    \
 364                                obd->obd_minor);                 \
 365                 RETURN(err);                                    \
 366         }                                                       \
 367 } while (0)
 368
 369 #define EXP_CHECK_DT_OP(exp, op)                                \
 370 do {                                                            \
 371         if ((exp) == NULL) {                                    \
 372                 CERROR("obd_" #op ": NULL export\n");           \
 373                 RETURN(-ENODEV);                                \
 374         }                                                       \
 375         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 376                 CERROR("obd_" #op ": cleaned up obd\n");        \
 377                 RETURN(-EOPNOTSUPP);                            \
 378         }                                                       \
 379         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 380                 CERROR("obd_" #op ": dev %d no operation\n",    \
 381                        (exp)->exp_obd->obd_minor);              \
 382                 RETURN(-EOPNOTSUPP);                            \
 383         }                                                       \
 384 } while (0)
 385
 386 #define CTXT_CHECK_OP(ctxt, op, err)                                 \
 387 do {                                                                 \
 388         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {             \
 389                 if (err)                                             \
 390                         CERROR("lop_" #op ": dev %d no operation\n", \
 391                                ctxt->loc_obd->obd_minor);            \
 392                 RETURN(err);                                         \
 393         }                                                            \
 394 } while (0)
 395
 396 static inline int class_devno_max(void)
 397 {
 398         return MAX_OBD_DEVICES;
 399 }
 400
 401 static inline int obd_get_info(struct obd_export *exp, __u32 keylen,
 402                                void *key, __u32 *vallen, void *val,
 403                                struct lov_stripe_md *lsm)
 404 {
 405         int rc;
 406         ENTRY;
 407
 408         EXP_CHECK_DT_OP(exp, get_info);
 409         EXP_COUNTER_INCREMENT(exp, get_info);
 410
 411         rc = OBP(exp->exp_obd, get_info)(exp, keylen, key, vallen, val, lsm);
 412         RETURN(rc);
 413 }
 414
 415 static inline int obd_set_info_async(struct obd_export *exp, obd_count keylen,
 416                                      void *key, obd_count vallen, void *val,
 417                                      struct ptlrpc_request_set *set)
 418 {
 419         int rc;
 420         ENTRY;
 421
 422         EXP_CHECK_DT_OP(exp, set_info_async);
 423         EXP_COUNTER_INCREMENT(exp, set_info_async);
 424
 425         rc = OBP(exp->exp_obd, set_info_async)(exp, keylen, key, vallen, val,
 426                                                set);
 427         RETURN(rc);
 428 }
 429
 430 #ifdef __KERNEL__
 431 #define DECLARE_LU_VARS(ldt, d)                 \
 432         struct lu_device_type *ldt;             \
 433         struct lu_device *d
 434 #else
 435 #define DECLARE_LU_VARS(ldt, d)                                 \
 436         extern void __placeholder_to_put_a_semicolon(void)
 437 #endif
 438 static inline int obd_setup(struct obd_device *obd, struct lustre_cfg *cfg)
 439 {
 440         int rc;
 441         DECLARE_LU_VARS(ldt, d);
 442         ENTRY;
 443
 444 #ifdef __KERNEL__
 445         ldt = obd->obd_type->typ_lu;
 446         if (ldt != NULL) {
 447                 struct lu_env env;
 448
 449                 rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
 450                 if (rc == 0) {
 451                         d = ldt->ldt_ops->ldto_device_alloc(&env, ldt, cfg);
 452                         lu_env_fini(&env);
 453                         if (!IS_ERR(d)) {
 454                                 obd->obd_lu_dev = d;
 455                                 d->ld_obd = obd;
 456                                 rc = 0;
 457                         } else
 458                                 rc = PTR_ERR(d);
 459                 }
 460         } else
 461 #endif
 462         {
 463                 OBD_CHECK_DT_OP(obd, setup, -EOPNOTSUPP);
 464                 OBD_COUNTER_INCREMENT(obd, setup);
 465                 rc = OBP(obd, setup)(obd, cfg);
 466         }
 467         RETURN(rc);
 468 }
 469
 470 static inline int obd_precleanup(struct obd_device *obd,
 471                                  enum obd_cleanup_stage cleanup_stage)
 472 {
 473         int rc;
 474         DECLARE_LU_VARS(ldt, d);
 475         ENTRY;
 476
 477         OBD_CHECK_DEV(obd);
 478 #ifdef __KERNEL__
 479         ldt = obd->obd_type->typ_lu;
 480         d = obd->obd_lu_dev;
 481         if (ldt != NULL) {
 482                 LASSERT(d != NULL);
 483                 if (cleanup_stage == OBD_CLEANUP_EXPORTS) {
 484                         struct lu_env env;
 485
 486                         rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
 487                         if (rc == 0) {
 488                                 ldt->ldt_ops->ldto_device_fini(&env, d);
 489                                 lu_env_fini(&env);
 490                         }
 491                 } else {
 492                         rc = 0;
 493                 }
 494         } else
 495 #endif
 496         {
 497                 OBD_CHECK_DT_OP(obd, precleanup, 0);
 498                 rc = OBP(obd, precleanup)(obd, cleanup_stage);
 499         }
 500
 501         OBD_COUNTER_INCREMENT(obd, precleanup);
 502         RETURN(rc);
 503 }
 504
 505 static inline int obd_cleanup(struct obd_device *obd)
 506 {
 507         int rc;
 508         DECLARE_LU_VARS(ldt, d);
 509         ENTRY;
 510
 511         OBD_CHECK_DEV(obd);
 512
 513 #ifdef __KERNEL__
 514         ldt = obd->obd_type->typ_lu;
 515         d = obd->obd_lu_dev;
 516         if (ldt != NULL) {
 517                 struct lu_env env;
 518                 LASSERT(d != NULL);
 519
 520                 rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
 521                 if (rc == 0) {
 522                         ldt->ldt_ops->ldto_device_free(&env, d);
 523                         lu_env_fini(&env);
 524                         obd->obd_lu_dev = NULL;
 525                 }
 526         } else
 527 #endif
 528         {
 529                 OBD_CHECK_DT_OP(obd, cleanup, 0);
 530                 rc = OBP(obd, cleanup)(obd);
 531         }
 532         OBD_COUNTER_INCREMENT(obd, cleanup);
 533         RETURN(rc);
 534 }
 535
 536 static inline int
 537 obd_process_config(struct obd_device *obd, int datalen, void *data)
 538 {
 539         int rc;
 540         DECLARE_LU_VARS(ldt, d);
 541         ENTRY;
 542
 543         OBD_CHECK_DEV(obd);
 544
 545 #ifdef __KERNEL__
 546         ldt = obd->obd_type->typ_lu;
 547         d = obd->obd_lu_dev;
 548         if (ldt != NULL && d != NULL) {
 549                 struct lu_env env;
 550
 551                 rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
 552                 if (rc == 0) {
 553                         rc = d->ld_ops->ldo_process_config(&env, d, data);
 554                         lu_env_fini(&env);
 555                 }
 556         } else
 557 #endif
 558         {
 559                 OBD_CHECK_DT_OP(obd, process_config, -EOPNOTSUPP);
 560                 rc = OBP(obd, process_config)(obd, datalen, data);
 561         }
 562         OBD_COUNTER_INCREMENT(obd, process_config);
 563
 564         RETURN(rc);
 565 }
 566
 567 /* Pack an in-memory MD struct for storage on disk.
 568  * Returns +ve size of packed MD (0 for free), or -ve error.
 569  *
 570  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 571  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 572  * If @*disk_tgt == NULL, it will be allocated
 573  */
 574 static inline int obd_packmd(struct obd_export *exp,
 575                              struct lov_mds_md **disk_tgt,
 576                              struct lov_stripe_md *mem_src)
 577 {
 578         int rc;
 579         ENTRY;
 580
 581         EXP_CHECK_DT_OP(exp, packmd);
 582         EXP_COUNTER_INCREMENT(exp, packmd);
 583
 584         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 585         RETURN(rc);
 586 }
 587
 588 static inline int obd_size_diskmd(struct obd_export *exp,
 589                                   struct lov_stripe_md *mem_src)
 590 {
 591         return obd_packmd(exp, NULL, mem_src);
 592 }
 593
 594 /* helper functions */
 595 static inline int obd_alloc_diskmd(struct obd_export *exp,
 596                                    struct lov_mds_md **disk_tgt)
 597 {
 598         LASSERT(disk_tgt);
 599         LASSERT(*disk_tgt == NULL);
 600         return obd_packmd(exp, disk_tgt, NULL);
 601 }
 602
 603 static inline int obd_free_diskmd(struct obd_export *exp,
 604                                   struct lov_mds_md **disk_tgt)
 605 {
 606         LASSERT(disk_tgt);
 607         LASSERT(*disk_tgt);
 608         return obd_packmd(exp, disk_tgt, NULL);
 609 }
 610
 611 /* Unpack an MD struct from disk to in-memory format.
 612  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 613  *
 614  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 615  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 616  * If @*mem_tgt == NULL, it will be allocated
 617  */
 618 static inline int obd_unpackmd(struct obd_export *exp,
 619                                struct lov_stripe_md **mem_tgt,
 620                                struct lov_mds_md *disk_src,
 621                                int disk_len)
 622 {
 623         int rc;
 624         ENTRY;
 625
 626         EXP_CHECK_DT_OP(exp, unpackmd);
 627         EXP_COUNTER_INCREMENT(exp, unpackmd);
 628
 629         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 630         RETURN(rc);
 631 }
 632
 633 /* helper functions */
 634 static inline int obd_alloc_memmd(struct obd_export *exp,
 635                                   struct lov_stripe_md **mem_tgt)
 636 {
 637         LASSERT(mem_tgt);
 638         LASSERT(*mem_tgt == NULL);
 639         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 640 }
 641
 642 static inline int obd_free_memmd(struct obd_export *exp,
 643                                  struct lov_stripe_md **mem_tgt)
 644 {
 645         LASSERT(mem_tgt);
 646         LASSERT(*mem_tgt);
 647         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 648 }
 649
 650 static inline int obd_checkmd(struct obd_export *exp,
 651                               struct obd_export *md_exp,
 652                               struct lov_stripe_md *mem_tgt)
 653 {
 654         int rc;
 655         ENTRY;
 656
 657         EXP_CHECK_DT_OP(exp, checkmd);
 658         EXP_COUNTER_INCREMENT(exp, checkmd);
 659
 660         rc = OBP(exp->exp_obd, checkmd)(exp, md_exp, mem_tgt);
 661         RETURN(rc);
 662 }
 663
 664 static inline int obd_precreate(struct obd_export *exp)
 665 {
 666         int rc;
 667         ENTRY;
 668
 669         EXP_CHECK_DT_OP(exp, precreate);
 670         OBD_COUNTER_INCREMENT(exp->exp_obd, precreate);
 671
 672         rc = OBP(exp->exp_obd, precreate)(exp);
 673         RETURN(rc);
 674 }
 675
 676 static inline int obd_create(struct obd_export *exp, struct obdo *obdo,
 677                              struct lov_stripe_md **ea,
 678                              struct obd_trans_info *oti)
 679 {
 680         int rc;
 681         ENTRY;
 682
 683         EXP_CHECK_DT_OP(exp, create);
 684         EXP_COUNTER_INCREMENT(exp, create);
 685
 686         rc = OBP(exp->exp_obd, create)(exp, obdo, ea, oti);
 687         RETURN(rc);
 688 }
 689
 690 static inline int obd_destroy(struct obd_export *exp, struct obdo *obdo,
 691                               struct lov_stripe_md *ea,
 692                               struct obd_trans_info *oti,
 693                               struct obd_export *md_exp)
 694 {
 695         int rc;
 696         ENTRY;
 697
 698         EXP_CHECK_DT_OP(exp, destroy);
 699         EXP_COUNTER_INCREMENT(exp, destroy);
 700
 701         rc = OBP(exp->exp_obd, destroy)(exp, obdo, ea, oti, md_exp);
 702         RETURN(rc);
 703 }
 704
 705 static inline int obd_getattr(struct obd_export *exp, struct obd_info *oinfo)
 706 {
 707         int rc;
 708         ENTRY;
 709
 710         EXP_CHECK_DT_OP(exp, getattr);
 711         EXP_COUNTER_INCREMENT(exp, getattr);
 712
 713         rc = OBP(exp->exp_obd, getattr)(exp, oinfo);
 714         RETURN(rc);
 715 }
 716
 717 static inline int obd_getattr_async(struct obd_export *exp,
 718                                     struct obd_info *oinfo,
 719                                     struct ptlrpc_request_set *set)
 720 {
 721         int rc;
 722         ENTRY;
 723
 724         EXP_CHECK_DT_OP(exp, getattr_async);
 725         EXP_COUNTER_INCREMENT(exp, getattr_async);
 726
 727         rc = OBP(exp->exp_obd, getattr_async)(exp, oinfo, set);
 728         RETURN(rc);
 729 }
 730
 731 static inline int obd_setattr(struct obd_export *exp, struct obd_info *oinfo,
 732                               struct obd_trans_info *oti)
 733 {
 734         int rc;
 735         ENTRY;
 736
 737         EXP_CHECK_DT_OP(exp, setattr);
 738         EXP_COUNTER_INCREMENT(exp, setattr);
 739
 740         rc = OBP(exp->exp_obd, setattr)(exp, oinfo, oti);
 741         RETURN(rc);
 742 }
 743
 744 /* This performs all the requests set init/wait/destroy actions. */
 745 static inline int obd_setattr_rqset(struct obd_export *exp,
 746                                     struct obd_info *oinfo,
 747                                     struct obd_trans_info *oti)
 748 {
 749         struct ptlrpc_request_set *set = NULL;
 750         int rc;
 751         ENTRY;
 752
 753         EXP_CHECK_DT_OP(exp, setattr_async);
 754         EXP_COUNTER_INCREMENT(exp, setattr_async);
 755
 756         set =  ptlrpc_prep_set();
 757         if (set == NULL)
 758                 RETURN(-ENOMEM);
 759
 760         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 761         if (rc == 0)
 762                 rc = ptlrpc_set_wait(set);
 763         ptlrpc_set_destroy(set);
 764         RETURN(rc);
 765 }
 766
 767 /* This adds all the requests into @set if @set != NULL, otherwise
 768    all requests are sent asynchronously without waiting for response. */
 769 static inline int obd_setattr_async(struct obd_export *exp,
 770                                     struct obd_info *oinfo,
 771                                     struct obd_trans_info *oti,
 772                                     struct ptlrpc_request_set *set)
 773 {
 774         int rc;
 775         ENTRY;
 776
 777         EXP_CHECK_DT_OP(exp, setattr_async);
 778         EXP_COUNTER_INCREMENT(exp, setattr_async);
 779
 780         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 781         RETURN(rc);
 782 }
 783
 784 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 785                                int priority)
 786 {
 787         struct obd_device *obd = imp->imp_obd;
 788         int rc;
 789         ENTRY;
 790
 791         OBD_CHECK_DEV_ACTIVE(obd);
 792         OBD_CHECK_DT_OP(obd, add_conn, -EOPNOTSUPP);
 793         OBD_COUNTER_INCREMENT(obd, add_conn);
 794
 795         rc = OBP(obd, add_conn)(imp, uuid, priority);
 796         RETURN(rc);
 797 }
 798
 799 static inline int obd_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
 800 {
 801         struct obd_device *obd = imp->imp_obd;
 802         int rc;
 803         ENTRY;
 804
 805         OBD_CHECK_DEV_ACTIVE(obd);
 806         OBD_CHECK_DT_OP(obd, del_conn, -EOPNOTSUPP);
 807         OBD_COUNTER_INCREMENT(obd, del_conn);
 808
 809         rc = OBP(obd, del_conn)(imp, uuid);
 810         RETURN(rc);
 811 }
 812
 813 static inline struct obd_uuid *obd_get_uuid(struct obd_export *exp)
 814 {
 815         struct obd_uuid *uuid;
 816         ENTRY;
 817
 818         OBD_CHECK_DT_OP(exp->exp_obd, get_uuid, NULL);
 819         EXP_COUNTER_INCREMENT(exp, get_uuid);
 820
 821         uuid = OBP(exp->exp_obd, get_uuid)(exp);
 822         RETURN(uuid);
 823 }
 824
 825 static inline int obd_connect(const struct lu_env *env,
 826                               struct lustre_handle *conn,struct obd_device *obd,
 827                               struct obd_uuid *cluuid,
 828                               struct obd_connect_data *d,
 829                               void *localdata)
 830 {
 831         int rc;
 832 #ifdef LIBCFS_DEBUG
 833         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 834                                                    * check */
 835 #endif
 836         ENTRY;
 837
 838         OBD_CHECK_DEV_ACTIVE(obd);
 839         OBD_CHECK_DT_OP(obd, connect, -EOPNOTSUPP);
 840         OBD_COUNTER_INCREMENT(obd, connect);
 841
 842         rc = OBP(obd, connect)(env, conn, obd, cluuid, d, localdata);
 843         /* check that only subset is granted */
 844         LASSERT(ergo(d != NULL,
 845                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 846         RETURN(rc);
 847 }
 848
 849 static inline int obd_reconnect(const struct lu_env *env,
 850                                 struct obd_export *exp,
 851                                 struct obd_device *obd,
 852                                 struct obd_uuid *cluuid,
 853                                 struct obd_connect_data *d)
 854 {
 855         int rc;
 856 #ifdef LIBCFS_DEBUG
 857         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 858                                                    * check */
 859 #endif
 860
 861         ENTRY;
 862
 863         OBD_CHECK_DEV_ACTIVE(obd);
 864         OBD_CHECK_DT_OP(obd, reconnect, 0);
 865         OBD_COUNTER_INCREMENT(obd, reconnect);
 866
 867         rc = OBP(obd, reconnect)(env, exp, obd, cluuid, d);
 868         /* check that only subset is granted */
 869         LASSERT(ergo(d != NULL,
 870                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 871         RETURN(rc);
 872 }
 873
 874 static inline int obd_disconnect(struct obd_export *exp)
 875 {
 876         int rc;
 877         ENTRY;
 878
 879         EXP_CHECK_DT_OP(exp, disconnect);
 880         EXP_COUNTER_INCREMENT(exp, disconnect);
 881
 882         rc = OBP(exp->exp_obd, disconnect)(exp);
 883         RETURN(rc);
 884 }
 885
 886 static inline int obd_fid_init(struct obd_export *exp)
 887 {
 888         int rc;
 889         ENTRY;
 890
 891         OBD_CHECK_DT_OP(exp->exp_obd, fid_init, 0);
 892         EXP_COUNTER_INCREMENT(exp, fid_init);
 893
 894         rc = OBP(exp->exp_obd, fid_init)(exp);
 895         RETURN(rc);
 896 }
 897
 898 static inline int obd_fid_fini(struct obd_export *exp)
 899 {
 900         int rc;
 901         ENTRY;
 902
 903         OBD_CHECK_DT_OP(exp->exp_obd, fid_fini, 0);
 904         EXP_COUNTER_INCREMENT(exp, fid_fini);
 905
 906         rc = OBP(exp->exp_obd, fid_fini)(exp);
 907         RETURN(rc);
 908 }
 909
 910 static inline int obd_fid_alloc(struct obd_export *exp,
 911                                 struct lu_fid *fid,
 912                                 struct md_op_data *op_data)
 913 {
 914         int rc;
 915         ENTRY;
 916
 917         EXP_CHECK_DT_OP(exp, fid_alloc);
 918         EXP_COUNTER_INCREMENT(exp, fid_alloc);
 919
 920         rc = OBP(exp->exp_obd, fid_alloc)(exp, fid, op_data);
 921         RETURN(rc);
 922 }
 923
 924 static inline int obd_fid_delete(struct obd_export *exp,
 925                                  const struct lu_fid *fid)
 926 {
 927         int rc;
 928         ENTRY;
 929
 930         EXP_CHECK_DT_OP(exp, fid_delete);
 931         EXP_COUNTER_INCREMENT(exp, fid_delete);
 932
 933         rc = OBP(exp->exp_obd, fid_delete)(exp, fid);
 934         RETURN(rc);
 935 }
 936
 937 static inline int obd_ping(struct obd_export *exp)
 938 {
 939         int rc;
 940         ENTRY;
 941
 942         OBD_CHECK_DT_OP(exp->exp_obd, ping, 0);
 943         EXP_COUNTER_INCREMENT(exp, ping);
 944
 945         rc = OBP(exp->exp_obd, ping)(exp);
 946         RETURN(rc);
 947 }
 948
 949 static inline int obd_init_export(struct obd_export *exp)
 950 {
 951         int rc = 0;
 952
 953         ENTRY;
 954         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 955             OBP((exp)->exp_obd, init_export))
 956                 rc = OBP(exp->exp_obd, init_export)(exp);
 957         RETURN(rc);
 958 }
 959
 960 static inline int obd_destroy_export(struct obd_export *exp)
 961 {
 962         ENTRY;
 963         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 964             OBP((exp)->exp_obd, destroy_export))
 965                 OBP(exp->exp_obd, destroy_export)(exp);
 966         RETURN(0);
 967 }
 968
 969 static inline int obd_extent_calc(struct obd_export *exp,
 970                                   struct lov_stripe_md *md,
 971                                   int cmd, obd_off *offset)
 972 {
 973         int rc;
 974         ENTRY;
 975         EXP_CHECK_DT_OP(exp, extent_calc);
 976         rc = OBP(exp->exp_obd, extent_calc)(exp, md, cmd, offset);
 977         RETURN(rc);
 978 }
 979
 980 static inline struct dentry *
 981 obd_lvfs_fid2dentry(struct obd_export *exp, __u64 id_ino, __u32 gen, __u64 gr)
 982 {
 983         LASSERT(exp->exp_obd);
 984
 985         return lvfs_fid2dentry(&exp->exp_obd->obd_lvfs_ctxt, id_ino, gen, gr,
 986                                exp->exp_obd);
 987 }
 988
 989 static inline int
 990 obd_lvfs_open_llog(struct obd_export *exp, __u64 id_ino, struct dentry *dentry)
 991 {
 992         LASSERT(exp->exp_obd);
 993         CERROR("FIXME what's the story here?  This needs to be an obd fn?\n");
 994 #if 0
 995         return lvfs_open_llog(&exp->exp_obd->obd_lvfs_ctxt, id_ino,
 996                               dentry, exp->exp_obd);
 997 #endif
 998         return 0;
 999 }
1000
1001 #ifndef time_before
1002 #define time_before(t1, t2) ((long)t2 - (long)t1 > 0)
1003 #endif
1004
1005 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1006  * If the cache is older than @max_age we will get a new value from the
1007  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1008 static inline int obd_statfs_async(struct obd_device *obd,
1009                                    struct obd_info *oinfo,
1010                                    __u64 max_age,
1011                                    struct ptlrpc_request_set *rqset)
1012 {
1013         int rc = 0;
1014         ENTRY;
1015
1016         if (obd == NULL)
1017                 RETURN(-EINVAL);
1018
1019         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1020         OBD_COUNTER_INCREMENT(obd, statfs);
1021
1022         CDEBUG(D_SUPER, "%s: osfs %p age "LPU64", max_age "LPU64"\n",
1023                obd->obd_name, &obd->obd_osfs, obd->obd_osfs_age, max_age);
1024         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1025                 rc = OBP(obd, statfs_async)(obd, oinfo, max_age, rqset);
1026         } else {
1027                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1028                        " objects "LPU64"/"LPU64"\n",
1029                        obd->obd_name, &obd->obd_osfs,
1030                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1031                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1032                 spin_lock(&obd->obd_osfs_lock);
1033                 memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
1034                 spin_unlock(&obd->obd_osfs_lock);
1035                 oinfo->oi_flags |= OBD_STATFS_FROM_CACHE;
1036                 if (oinfo->oi_cb_up)
1037                         oinfo->oi_cb_up(oinfo, 0);
1038         }
1039         RETURN(rc);
1040 }
1041
1042 static inline int obd_statfs_rqset(struct obd_device *obd,
1043                                    struct obd_statfs *osfs, __u64 max_age,
1044                                    __u32 flags)
1045 {
1046         struct ptlrpc_request_set *set = NULL;
1047         struct obd_info oinfo = { { { 0 } } };
1048         int rc = 0;
1049         ENTRY;
1050
1051         set =  ptlrpc_prep_set();
1052         if (set == NULL)
1053                 RETURN(-ENOMEM);
1054
1055         oinfo.oi_osfs = osfs;
1056         oinfo.oi_flags = flags;
1057         rc = obd_statfs_async(obd, &oinfo, max_age, set);
1058         if (rc == 0)
1059                 rc = ptlrpc_set_wait(set);
1060         ptlrpc_set_destroy(set);
1061         RETURN(rc);
1062 }
1063
1064 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1065  * If the cache is older than @max_age we will get a new value from the
1066  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1067 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
1068                              __u64 max_age, __u32 flags)
1069 {
1070         int rc = 0;
1071         ENTRY;
1072
1073         if (obd == NULL)
1074                 RETURN(-EINVAL);
1075
1076         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1077         OBD_COUNTER_INCREMENT(obd, statfs);
1078
1079         CDEBUG(D_SUPER, "osfs "LPU64", max_age "LPU64"\n",
1080                obd->obd_osfs_age, max_age);
1081         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1082                 rc = OBP(obd, statfs)(obd, osfs, max_age, flags);
1083                 if (rc == 0) {
1084                         spin_lock(&obd->obd_osfs_lock);
1085                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
1086                         obd->obd_osfs_age = cfs_time_current_64();
1087                         spin_unlock(&obd->obd_osfs_lock);
1088                 }
1089         } else {
1090                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1091                        " objects "LPU64"/"LPU64"\n",
1092                        obd->obd_name, &obd->obd_osfs,
1093                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1094                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1095                 spin_lock(&obd->obd_osfs_lock);
1096                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
1097                 spin_unlock(&obd->obd_osfs_lock);
1098         }
1099         RETURN(rc);
1100 }
1101
1102 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
1103                            struct lov_stripe_md *ea, obd_size start,
1104                            obd_size end, void *capa)
1105 {
1106         int rc;
1107         ENTRY;
1108
1109         OBD_CHECK_DT_OP(exp->exp_obd, sync, -EOPNOTSUPP);
1110         EXP_COUNTER_INCREMENT(exp, sync);
1111
1112         rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end, capa);
1113         RETURN(rc);
1114 }
1115
1116 static inline int obd_punch_rqset(struct obd_export *exp,
1117                                   struct obd_info *oinfo,
1118                                   struct obd_trans_info *oti)
1119 {
1120         struct ptlrpc_request_set *set = NULL;
1121         int rc;
1122         ENTRY;
1123
1124         EXP_CHECK_DT_OP(exp, punch);
1125         EXP_COUNTER_INCREMENT(exp, punch);
1126
1127         set =  ptlrpc_prep_set();
1128         if (set == NULL)
1129                 RETURN(-ENOMEM);
1130
1131         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, set);
1132         if (rc == 0)
1133                 rc = ptlrpc_set_wait(set);
1134         ptlrpc_set_destroy(set);
1135         RETURN(rc);
1136 }
1137
1138 static inline int obd_punch(struct obd_export *exp, struct obd_info *oinfo,
1139                             struct obd_trans_info *oti,
1140                             struct ptlrpc_request_set *rqset)
1141 {
1142         int rc;
1143         ENTRY;
1144
1145         EXP_CHECK_DT_OP(exp, punch);
1146         EXP_COUNTER_INCREMENT(exp, punch);
1147
1148         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, rqset);
1149         RETURN(rc);
1150 }
1151
1152 static inline int obd_brw(int cmd, struct obd_export *exp,
1153                           struct obd_info *oinfo, obd_count oa_bufs,
1154                           struct brw_page *pg, struct obd_trans_info *oti)
1155 {
1156         int rc;
1157         ENTRY;
1158
1159         EXP_CHECK_DT_OP(exp, brw);
1160         EXP_COUNTER_INCREMENT(exp, brw);
1161
1162         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
1163                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
1164                        "or OBD_BRW_CHECK\n");
1165                 LBUG();
1166         }
1167
1168         rc = OBP(exp->exp_obd, brw)(cmd, exp, oinfo, oa_bufs, pg, oti);
1169         RETURN(rc);
1170 }
1171
1172 static inline int obd_brw_async(int cmd, struct obd_export *exp,
1173                                 struct obd_info *oinfo, obd_count oa_bufs,
1174                                 struct brw_page *pg, struct obd_trans_info *oti,
1175                                 struct ptlrpc_request_set *set)
1176 {
1177         int rc;
1178         ENTRY;
1179
1180         EXP_CHECK_DT_OP(exp, brw_async);
1181         EXP_COUNTER_INCREMENT(exp, brw_async);
1182
1183         if (!(cmd & OBD_BRW_RWMASK)) {
1184                 CERROR("obd_brw: cmd must be OBD_BRW_READ or OBD_BRW_WRITE\n");
1185                 LBUG();
1186         }
1187
1188         rc = OBP(exp->exp_obd, brw_async)(cmd, exp, oinfo, oa_bufs, pg,oti,set);
1189         RETURN(rc);
1190 }
1191
1192 static inline int obd_brw_rqset(int cmd, struct obd_export *exp,
1193                                 struct obdo *oa, struct lov_stripe_md *lsm,
1194                                 obd_count oa_bufs, struct brw_page *pg,
1195                                 struct obd_trans_info *oti,
1196                                 struct obd_capa *ocapa)
1197 {
1198         struct ptlrpc_request_set *set = NULL;
1199         struct obd_info oinfo = { { { 0 } } };
1200         int rc = 0;
1201         ENTRY;
1202
1203         set =  ptlrpc_prep_set();
1204         if (set == NULL)
1205                 RETURN(-ENOMEM);
1206
1207         oinfo.oi_oa = oa;
1208         oinfo.oi_md = lsm;
1209         oinfo.oi_capa = ocapa;
1210         rc = obd_brw_async(cmd, exp, &oinfo, oa_bufs, pg, oti, set);
1211         if (rc == 0) {
1212                 rc = ptlrpc_set_wait(set);
1213                 if (rc)
1214                         CERROR("error from callback: rc = %d\n", rc);
1215         } else {
1216                 CDEBUG(rc == -ENOSPC ? D_INODE : D_ERROR,
1217                        "error from obd_brw_async: rc = %d\n", rc);
1218         }
1219         ptlrpc_set_destroy(set);
1220         RETURN(rc);
1221 }
1222
1223 static inline  int obd_prep_async_page(struct obd_export *exp,
1224                                        struct lov_stripe_md *lsm,
1225                                        struct lov_oinfo *loi,
1226                                        cfs_page_t *page, obd_off offset,
1227                                        struct obd_async_page_ops *ops,
1228                                        void *data, void **res, int nocache,
1229                                        struct lustre_handle *lockh)
1230 {
1231         int ret;
1232         ENTRY;
1233
1234         EXP_CHECK_DT_OP(exp, prep_async_page);
1235         EXP_COUNTER_INCREMENT(exp, prep_async_page);
1236
1237         ret = OBP(exp->exp_obd, prep_async_page)(exp, lsm, loi, page, offset,
1238                                                  ops, data, res, nocache,
1239                                                  lockh);
1240         RETURN(ret);
1241 }
1242
1243 /**
1244  * Checks if requested extent lock is compatible with a lock under the page.
1245  *
1246  * Checks if the lock under \a page is compatible with a read or write lock
1247  * (specified by \a rw) for an extent [\a start , \a end].
1248  *
1249  * \param exp obd export (lov or osc)
1250  * \param lsm striping information for the file
1251  * \param res async_page placeholder
1252  * \param rw OBD_BRW_READ if requested for reading,
1253  *           OBD_BRW_WRITE if requested for writing
1254  * \param start start of the requested extent
1255  * \param end end of the requested extent
1256  * \param cookie transparent parameter for passing locking context
1257  *
1258  * \post result == 1, *cookie == context, appropriate lock is referenced or
1259  *
1260  * \retval 1 owned lock is reused for the request
1261  * \retval 0 no lock reused for the request
1262  * \retval -ENOTSUPP reget_short_lock is not exported at this layer
1263  *
1264  * \see obd_release_short_lock
1265  */
1266 static inline int obd_reget_short_lock(struct obd_export *exp,
1267                                        struct lov_stripe_md *lsm,
1268                                        void **res, int rw,
1269                                        obd_off start, obd_off end,
1270                                        void **cookie)
1271 {
1272         ENTRY;
1273
1274         EXP_CHECK_DT_OP(exp, reget_short_lock);
1275         EXP_COUNTER_INCREMENT(exp, reget_short_lock);
1276
1277         RETURN(OBP(exp->exp_obd, reget_short_lock)(exp, lsm, res, rw,
1278                                                    start, end, cookie));
1279 }
1280
1281
1282 /**
1283  * Releases a reference to a lock taken in a "fast" way.
1284  *
1285  * Releases a read or write (specified by \a rw) lock
1286  * referenced by \a cookie.
1287  *
1288  * \param exp obd export (lov or osc)
1289  * \param lsm striping information for the file
1290  * \param end end of the locked extent
1291  * \param rw OBD_BRW_READ if requested for reading,
1292  *           OBD_BRW_WRITE if requested for writing
1293  * \param cookie transparent parameter for passing locking context
1294  *
1295  * \post appropriate lock is dereferenced
1296  *
1297  * \see obd_reget_short_lock
1298  */
1299 static inline int obd_release_short_lock(struct obd_export *exp,
1300                                          struct lov_stripe_md *lsm, obd_off end,
1301                                          void *cookie, int rw)
1302 {
1303         ENTRY;
1304
1305         EXP_CHECK_DT_OP(exp, release_short_lock);
1306         EXP_COUNTER_INCREMENT(exp, release_short_lock);
1307
1308         RETURN(OBP(exp->exp_obd, release_short_lock)(exp, lsm, end,
1309                                                      cookie, rw));
1310 }
1311
1312 static inline int obd_queue_async_io(struct obd_export *exp,
1313                                      struct lov_stripe_md *lsm,
1314                                      struct lov_oinfo *loi, void *cookie,
1315                                      int cmd, obd_off off, int count,
1316                                      obd_flag brw_flags, obd_flag async_flags)
1317 {
1318         int rc;
1319         ENTRY;
1320
1321         EXP_CHECK_DT_OP(exp, queue_async_io);
1322         EXP_COUNTER_INCREMENT(exp, queue_async_io);
1323         LASSERT(cmd & OBD_BRW_RWMASK);
1324
1325         rc = OBP(exp->exp_obd, queue_async_io)(exp, lsm, loi, cookie, cmd, off,
1326                                                count, brw_flags, async_flags);
1327         RETURN(rc);
1328 }
1329
1330 static inline int obd_set_async_flags(struct obd_export *exp,
1331                                       struct lov_stripe_md *lsm,
1332                                       struct lov_oinfo *loi, void *cookie,
1333                                       obd_flag async_flags)
1334 {
1335         int rc;
1336         ENTRY;
1337
1338         EXP_CHECK_DT_OP(exp, set_async_flags);
1339         EXP_COUNTER_INCREMENT(exp, set_async_flags);
1340
1341         rc = OBP(exp->exp_obd, set_async_flags)(exp, lsm, loi, cookie,
1342                                                 async_flags);
1343         RETURN(rc);
1344 }
1345
1346 static inline int obd_queue_group_io(struct obd_export *exp,
1347                                      struct lov_stripe_md *lsm,
1348                                      struct lov_oinfo *loi,
1349                                      struct obd_io_group *oig,
1350                                      void *cookie, int cmd, obd_off off,
1351                                      int count, obd_flag brw_flags,
1352                                      obd_flag async_flags)
1353 {
1354         int rc;
1355         ENTRY;
1356
1357         EXP_CHECK_DT_OP(exp, queue_group_io);
1358         EXP_COUNTER_INCREMENT(exp, queue_group_io);
1359         LASSERT(cmd & OBD_BRW_RWMASK);
1360
1361         rc = OBP(exp->exp_obd, queue_group_io)(exp, lsm, loi, oig, cookie,
1362                                                cmd, off, count, brw_flags,
1363                                                async_flags);
1364         RETURN(rc);
1365 }
1366
1367 static inline int obd_trigger_group_io(struct obd_export *exp,
1368                                        struct lov_stripe_md *lsm,
1369                                        struct lov_oinfo *loi,
1370                                        struct obd_io_group *oig)
1371 {
1372         int rc;
1373         ENTRY;
1374
1375         EXP_CHECK_DT_OP(exp, trigger_group_io);
1376         EXP_COUNTER_INCREMENT(exp, trigger_group_io);
1377
1378         rc = OBP(exp->exp_obd, trigger_group_io)(exp, lsm, loi, oig);
1379         RETURN(rc);
1380 }
1381
1382 static inline int obd_teardown_async_page(struct obd_export *exp,
1383                                           struct lov_stripe_md *lsm,
1384                                           struct lov_oinfo *loi, void *cookie)
1385 {
1386         int rc;
1387         ENTRY;
1388
1389         EXP_CHECK_DT_OP(exp, teardown_async_page);
1390         EXP_COUNTER_INCREMENT(exp, teardown_async_page);
1391
1392         rc = OBP(exp->exp_obd, teardown_async_page)(exp, lsm, loi, cookie);
1393         RETURN(rc);
1394 }
1395
1396 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
1397                              int objcount, struct obd_ioobj *obj,
1398                              int niocount, struct niobuf_remote *remote,
1399                              struct niobuf_local *local,
1400                              struct obd_trans_info *oti,
1401                              struct lustre_capa *capa)
1402 {
1403         int rc;
1404         ENTRY;
1405
1406         EXP_CHECK_DT_OP(exp, preprw);
1407         EXP_COUNTER_INCREMENT(exp, preprw);
1408
1409         rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, niocount,
1410                                        remote, local, oti, capa);
1411         RETURN(rc);
1412 }
1413
1414 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
1415                                int objcount, struct obd_ioobj *obj,
1416                                int niocount, struct niobuf_local *local,
1417                                struct obd_trans_info *oti, int rc)
1418 {
1419         ENTRY;
1420
1421         EXP_CHECK_DT_OP(exp, commitrw);
1422         EXP_COUNTER_INCREMENT(exp, commitrw);
1423
1424         rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj, niocount,
1425                                          local, oti, rc);
1426         RETURN(rc);
1427 }
1428
1429 static inline int obd_merge_lvb(struct obd_export *exp,
1430                                 struct lov_stripe_md *lsm,
1431                                 struct ost_lvb *lvb, int kms_only)
1432 {
1433         int rc;
1434         ENTRY;
1435
1436         EXP_CHECK_DT_OP(exp, merge_lvb);
1437         EXP_COUNTER_INCREMENT(exp, merge_lvb);
1438
1439         rc = OBP(exp->exp_obd, merge_lvb)(exp, lsm, lvb, kms_only);
1440         RETURN(rc);
1441 }
1442
1443 static inline int obd_adjust_kms(struct obd_export *exp,
1444                                  struct lov_stripe_md *lsm, obd_off size,
1445                                  int shrink)
1446 {
1447         int rc;
1448         ENTRY;
1449
1450         EXP_CHECK_DT_OP(exp, adjust_kms);
1451         EXP_COUNTER_INCREMENT(exp, adjust_kms);
1452
1453         rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
1454         RETURN(rc);
1455 }
1456
1457 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1458                                 int len, void *karg, void *uarg)
1459 {
1460         int rc;
1461         ENTRY;
1462
1463         EXP_CHECK_DT_OP(exp, iocontrol);
1464         EXP_COUNTER_INCREMENT(exp, iocontrol);
1465
1466         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1467         RETURN(rc);
1468 }
1469
1470 static inline int obd_enqueue_rqset(struct obd_export *exp,
1471                                     struct obd_info *oinfo,
1472                                     struct ldlm_enqueue_info *einfo)
1473 {
1474         struct ptlrpc_request_set *set = NULL;
1475         int rc;
1476         ENTRY;
1477
1478         EXP_CHECK_DT_OP(exp, enqueue);
1479         EXP_COUNTER_INCREMENT(exp, enqueue);
1480
1481         set =  ptlrpc_prep_set();
1482         if (set == NULL)
1483                 RETURN(-ENOMEM);
1484
1485         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1486         if (rc == 0)
1487                 rc = ptlrpc_set_wait(set);
1488         ptlrpc_set_destroy(set);
1489         RETURN(rc);
1490 }
1491
1492 static inline int obd_enqueue(struct obd_export *exp,
1493                               struct obd_info *oinfo,
1494                               struct ldlm_enqueue_info *einfo,
1495                               struct ptlrpc_request_set *set)
1496 {
1497         int rc;
1498         ENTRY;
1499
1500         EXP_CHECK_DT_OP(exp, enqueue);
1501         EXP_COUNTER_INCREMENT(exp, enqueue);
1502
1503         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1504         RETURN(rc);
1505 }
1506
1507 static inline int obd_match(struct obd_export *exp, struct lov_stripe_md *ea,
1508                             __u32 type, ldlm_policy_data_t *policy, __u32 mode,
1509                             int *flags, void *data, struct lustre_handle *lockh)
1510 {
1511         int rc;
1512         ENTRY;
1513
1514         EXP_CHECK_DT_OP(exp, match);
1515         EXP_COUNTER_INCREMENT(exp, match);
1516
1517         rc = OBP(exp->exp_obd, match)(exp, ea, type, policy, mode, flags, data,
1518                                       lockh);
1519         RETURN(rc);
1520 }
1521
1522 static inline int obd_change_cbdata(struct obd_export *exp,
1523                                     struct lov_stripe_md *lsm,
1524                                     ldlm_iterator_t it, void *data)
1525 {
1526         int rc;
1527         ENTRY;
1528
1529         EXP_CHECK_DT_OP(exp, change_cbdata);
1530         EXP_COUNTER_INCREMENT(exp, change_cbdata);
1531
1532         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1533         RETURN(rc);
1534 }
1535
1536 static inline int obd_cancel(struct obd_export *exp,
1537                              struct lov_stripe_md *ea, __u32 mode,
1538                              struct lustre_handle *lockh)
1539 {
1540         int rc;
1541         ENTRY;
1542
1543         EXP_CHECK_DT_OP(exp, cancel);
1544         EXP_COUNTER_INCREMENT(exp, cancel);
1545
1546         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1547         RETURN(rc);
1548 }
1549
1550 static inline int obd_cancel_unused(struct obd_export *exp,
1551                                     struct lov_stripe_md *ea,
1552                                     int flags, void *opaque)
1553 {
1554         int rc;
1555         ENTRY;
1556
1557         EXP_CHECK_DT_OP(exp, cancel_unused);
1558         EXP_COUNTER_INCREMENT(exp, cancel_unused);
1559
1560         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1561         RETURN(rc);
1562 }
1563
1564 static inline int obd_join_lru(struct obd_export *exp,
1565                                struct lov_stripe_md *ea, int join)
1566 {
1567         int rc;
1568         ENTRY;
1569
1570         EXP_CHECK_DT_OP(exp, join_lru);
1571         EXP_COUNTER_INCREMENT(exp, join_lru);
1572
1573         rc = OBP(exp->exp_obd, join_lru)(exp, ea, join);
1574         RETURN(rc);
1575 }
1576
1577 static inline int obd_pin(struct obd_export *exp, const struct lu_fid *fid,
1578                           struct obd_capa *oc, struct obd_client_handle *handle,
1579                           int flag)
1580 {
1581         int rc;
1582         ENTRY;
1583
1584         EXP_CHECK_DT_OP(exp, pin);
1585         EXP_COUNTER_INCREMENT(exp, pin);
1586
1587         rc = OBP(exp->exp_obd, pin)(exp, fid, oc, handle, flag);
1588         RETURN(rc);
1589 }
1590
1591 static inline int obd_unpin(struct obd_export *exp,
1592                             struct obd_client_handle *handle, int flag)
1593 {
1594         int rc;
1595         ENTRY;
1596
1597         EXP_CHECK_DT_OP(exp, unpin);
1598         EXP_COUNTER_INCREMENT(exp, unpin);
1599
1600         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1601         RETURN(rc);
1602 }
1603
1604
1605 static inline void obd_import_event(struct obd_device *obd,
1606                                     struct obd_import *imp,
1607                                     enum obd_import_event event)
1608 {
1609         ENTRY;
1610         if (!obd) {
1611                 CERROR("NULL device\n");
1612                 EXIT;
1613                 return;
1614         }
1615         if (obd->obd_set_up && OBP(obd, import_event)) {
1616                 OBD_COUNTER_INCREMENT(obd, import_event);
1617                 OBP(obd, import_event)(obd, imp, event);
1618         }
1619         EXIT;
1620 }
1621
1622 static inline int obd_llog_connect(struct obd_export *exp,
1623                                    struct llogd_conn_body *body)
1624 {
1625         int rc;
1626         ENTRY;
1627
1628         OBD_CHECK_DT_OP(exp->exp_obd, llog_connect, 0);
1629         EXP_COUNTER_INCREMENT(exp, llog_connect);
1630
1631         rc = OBP(exp->exp_obd, llog_connect)(exp, body);
1632         RETURN(rc);
1633 }
1634
1635
1636 static inline int obd_notify(struct obd_device *obd,
1637                              struct obd_device *watched,
1638                              enum obd_notify_event ev,
1639                              void *data)
1640 {
1641         int rc;
1642         ENTRY;
1643         OBD_CHECK_DEV(obd);
1644
1645         /* the check for async_recov is a complete hack - I'm hereby
1646            overloading the meaning to also mean "this was called from
1647            mds_postsetup".  I know that my mds is able to handle notifies
1648            by this point, and it needs to get them to execute mds_postrecov. */
1649         if (!obd->obd_set_up && !obd->obd_async_recov) {
1650                 CDEBUG(D_HA, "obd %s not set up\n", obd->obd_name);
1651                 RETURN(-EINVAL);
1652         }
1653
1654         if (!OBP(obd, notify)) {
1655                 CERROR("obd %s has no notify handler\n", obd->obd_name);
1656                 RETURN(-ENOSYS);
1657         }
1658
1659         OBD_COUNTER_INCREMENT(obd, notify);
1660         rc = OBP(obd, notify)(obd, watched, ev, data);
1661         RETURN(rc);
1662 }
1663
1664 static inline int obd_notify_observer(struct obd_device *observer,
1665                                       struct obd_device *observed,
1666                                       enum obd_notify_event ev,
1667                                       void *data)
1668 {
1669         int rc1;
1670         int rc2;
1671
1672         struct obd_notify_upcall *onu;
1673
1674         if (observer->obd_observer)
1675                 rc1 = obd_notify(observer->obd_observer, observed, ev, data);
1676         else
1677                 rc1 = 0;
1678         /*
1679          * Also, call non-obd listener, if any
1680          */
1681         onu = &observer->obd_upcall;
1682         if (onu->onu_upcall != NULL)
1683                 rc2 = onu->onu_upcall(observer, observed, ev, onu->onu_owner);
1684         else
1685                 rc2 = 0;
1686
1687         return rc1 ? rc1 : rc2;
1688 }
1689
1690 static inline int obd_quotacheck(struct obd_export *exp,
1691                                  struct obd_quotactl *oqctl)
1692 {
1693         int rc;
1694         ENTRY;
1695
1696         EXP_CHECK_DT_OP(exp, quotacheck);
1697         EXP_COUNTER_INCREMENT(exp, quotacheck);
1698
1699         rc = OBP(exp->exp_obd, quotacheck)(exp, oqctl);
1700         RETURN(rc);
1701 }
1702
1703 static inline int obd_quotactl(struct obd_export *exp,
1704                                struct obd_quotactl *oqctl)
1705 {
1706         int rc;
1707         ENTRY;
1708
1709         EXP_CHECK_DT_OP(exp, quotactl);
1710         EXP_COUNTER_INCREMENT(exp, quotactl);
1711
1712         rc = OBP(exp->exp_obd, quotactl)(exp, oqctl);
1713         RETURN(rc);
1714 }
1715
1716 static inline int obd_health_check(struct obd_device *obd)
1717 {
1718         /* returns: 0 on healthy
1719          *         >0 on unhealthy + reason code/flag
1720          *            however the only suppored reason == 1 right now
1721          *            We'll need to define some better reasons
1722          *            or flags in the future.
1723          *         <0 on error
1724          */
1725         int rc;
1726         ENTRY;
1727
1728         /* don't use EXP_CHECK_DT_OP, because NULL method is normal here */
1729         if (obd == NULL || !OBT(obd)) {
1730                 CERROR("cleaned up obd\n");
1731                 RETURN(-EOPNOTSUPP);
1732         }
1733         if (!obd->obd_set_up || obd->obd_stopping)
1734                 RETURN(0);
1735         if (!OBP(obd, health_check))
1736                 RETURN(0);
1737
1738         rc = OBP(obd, health_check)(obd);
1739         RETURN(rc);
1740 }
1741
1742 static inline int obd_register_observer(struct obd_device *obd,
1743                                         struct obd_device *observer)
1744 {
1745         ENTRY;
1746         OBD_CHECK_DEV(obd);
1747         if (obd->obd_observer && observer)
1748                 RETURN(-EALREADY);
1749         obd->obd_observer = observer;
1750         RETURN(0);
1751 }
1752
1753 static inline int obd_register_page_removal_cb(struct obd_export *exp,
1754                                                obd_page_removal_cb_t cb,
1755                                                obd_pin_extent_cb pin_cb)
1756 {
1757         int rc;
1758         ENTRY;
1759
1760         OBD_CHECK_DT_OP(exp->exp_obd, register_page_removal_cb, 0);
1761         OBD_COUNTER_INCREMENT(exp->exp_obd, register_page_removal_cb);
1762
1763         rc = OBP(exp->exp_obd, register_page_removal_cb)(exp, cb, pin_cb);
1764         RETURN(rc);
1765 }
1766
1767 static inline int obd_unregister_page_removal_cb(struct obd_export *exp,
1768                                                  obd_page_removal_cb_t cb)
1769 {
1770         int rc;
1771         ENTRY;
1772
1773         OBD_CHECK_DT_OP(exp->exp_obd, unregister_page_removal_cb, 0);
1774         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_page_removal_cb);
1775
1776         rc = OBP(exp->exp_obd, unregister_page_removal_cb)(exp, cb);
1777         RETURN(rc);
1778 }
1779
1780 static inline int obd_register_lock_cancel_cb(struct obd_export *exp,
1781                                               obd_lock_cancel_cb cb)
1782 {
1783         int rc;
1784         ENTRY;
1785
1786         OBD_CHECK_DT_OP(exp->exp_obd, register_lock_cancel_cb, 0);
1787         OBD_COUNTER_INCREMENT(exp->exp_obd, register_lock_cancel_cb);
1788
1789         rc = OBP(exp->exp_obd, register_lock_cancel_cb)(exp, cb);
1790         RETURN(rc);
1791 }
1792
1793 static inline int obd_unregister_lock_cancel_cb(struct obd_export *exp,
1794                                                  obd_lock_cancel_cb cb)
1795 {
1796         int rc;
1797         ENTRY;
1798
1799         OBD_CHECK_DT_OP(exp->exp_obd, unregister_lock_cancel_cb, 0);
1800         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_lock_cancel_cb);
1801
1802         rc = OBP(exp->exp_obd, unregister_lock_cancel_cb)(exp, cb);
1803         RETURN(rc);
1804 }
1805
1806 /* metadata helpers */
1807 static inline int md_getstatus(struct obd_export *exp,
1808                                struct lu_fid *fid, struct obd_capa **pc)
1809 {
1810         int rc;
1811         ENTRY;
1812
1813         EXP_CHECK_MD_OP(exp, getstatus);
1814         EXP_MD_COUNTER_INCREMENT(exp, getstatus);
1815         rc = MDP(exp->exp_obd, getstatus)(exp, fid, pc);
1816         RETURN(rc);
1817 }
1818
1819 static inline int md_getattr(struct obd_export *exp, const struct lu_fid *fid,
1820                              struct obd_capa *oc, obd_valid valid, int ea_size,
1821                              struct ptlrpc_request **request)
1822 {
1823         int rc;
1824         ENTRY;
1825         EXP_CHECK_MD_OP(exp, getattr);
1826         EXP_MD_COUNTER_INCREMENT(exp, getattr);
1827         rc = MDP(exp->exp_obd, getattr)(exp, fid, oc, valid,
1828                                         ea_size, request);
1829         RETURN(rc);
1830 }
1831
1832 static inline int md_change_cbdata(struct obd_export *exp,
1833                                    const struct lu_fid *fid,
1834                                    ldlm_iterator_t it, void *data)
1835 {
1836         int rc;
1837         ENTRY;
1838         EXP_CHECK_MD_OP(exp, change_cbdata);
1839         EXP_MD_COUNTER_INCREMENT(exp, change_cbdata);
1840         rc = MDP(exp->exp_obd, change_cbdata)(exp, fid, it, data);
1841         RETURN(rc);
1842 }
1843
1844 static inline int md_close(struct obd_export *exp, struct md_op_data *op_data,
1845                            struct md_open_data *mod,
1846                            struct ptlrpc_request **request)
1847 {
1848         int rc;
1849         ENTRY;
1850         EXP_CHECK_MD_OP(exp, close);
1851         EXP_MD_COUNTER_INCREMENT(exp, close);
1852         rc = MDP(exp->exp_obd, close)(exp, op_data, mod, request);
1853         RETURN(rc);
1854 }
1855
1856 static inline int md_create(struct obd_export *exp, struct md_op_data *op_data,
1857                             const void *data, int datalen, int mode, __u32 uid,
1858                             __u32 gid, __u32 cap_effective, __u64 rdev,
1859                             struct ptlrpc_request **request)
1860 {
1861         int rc;
1862         ENTRY;
1863         EXP_CHECK_MD_OP(exp, create);
1864         EXP_MD_COUNTER_INCREMENT(exp, create);
1865         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1866                                        uid, gid, cap_effective, rdev, request);
1867         RETURN(rc);
1868 }
1869
1870 static inline int md_done_writing(struct obd_export *exp,
1871                                   struct md_op_data *op_data,
1872                                   struct md_open_data *mod)
1873 {
1874         int rc;
1875         ENTRY;
1876         EXP_CHECK_MD_OP(exp, done_writing);
1877         EXP_MD_COUNTER_INCREMENT(exp, done_writing);
1878         rc = MDP(exp->exp_obd, done_writing)(exp, op_data, mod);
1879         RETURN(rc);
1880 }
1881
1882 static inline int md_enqueue(struct obd_export *exp,
1883                              struct ldlm_enqueue_info *einfo,
1884                              struct lookup_intent *it,
1885                              struct md_op_data *op_data,
1886                              struct lustre_handle *lockh,
1887                              void *lmm, int lmmsize,
1888                              struct ptlrpc_request **req,
1889                              int extra_lock_flags)
1890 {
1891         int rc;
1892         ENTRY;
1893         EXP_CHECK_MD_OP(exp, enqueue);
1894         EXP_MD_COUNTER_INCREMENT(exp, enqueue);
1895         rc = MDP(exp->exp_obd, enqueue)(exp, einfo, it, op_data, lockh,
1896                                         lmm, lmmsize, req, extra_lock_flags);
1897         RETURN(rc);
1898 }
1899
1900 static inline int md_getattr_name(struct obd_export *exp,
1901                                   const struct lu_fid *fid, struct obd_capa *oc,
1902                                   const char *name, int namelen,
1903                                   obd_valid valid, int ea_size, __u32 suppgid,
1904                                   struct ptlrpc_request **request)
1905 {
1906         int rc;
1907         ENTRY;
1908         EXP_CHECK_MD_OP(exp, getattr_name);
1909         EXP_MD_COUNTER_INCREMENT(exp, getattr_name);
1910         rc = MDP(exp->exp_obd, getattr_name)(exp, fid, oc, name, namelen,
1911                                              valid, ea_size, suppgid, request);
1912         RETURN(rc);
1913 }
1914
1915 static inline int md_intent_lock(struct obd_export *exp,
1916                                  struct md_op_data *op_data, void *lmm,
1917                                  int lmmsize, struct lookup_intent *it,
1918                                  int flags, struct ptlrpc_request **reqp,
1919                                  ldlm_blocking_callback cb_blocking,
1920                                  int extra_lock_flags)
1921 {
1922         int rc;
1923         ENTRY;
1924         EXP_CHECK_MD_OP(exp, intent_lock);
1925         EXP_MD_COUNTER_INCREMENT(exp, intent_lock);
1926         rc = MDP(exp->exp_obd, intent_lock)(exp, op_data, lmm, lmmsize,
1927                                             it, flags, reqp, cb_blocking,
1928                                             extra_lock_flags);
1929         RETURN(rc);
1930 }
1931
1932 static inline int md_link(struct obd_export *exp, struct md_op_data *op_data,
1933                           struct ptlrpc_request **request)
1934 {
1935         int rc;
1936         ENTRY;
1937         EXP_CHECK_MD_OP(exp, link);
1938         EXP_MD_COUNTER_INCREMENT(exp, link);
1939         rc = MDP(exp->exp_obd, link)(exp, op_data, request);
1940         RETURN(rc);
1941 }
1942
1943 static inline int md_rename(struct obd_export *exp, struct md_op_data *op_data,
1944                             const char *old, int oldlen, const char *new,
1945                             int newlen, struct ptlrpc_request **request)
1946 {
1947         int rc;
1948         ENTRY;
1949         EXP_CHECK_MD_OP(exp, rename);
1950         EXP_MD_COUNTER_INCREMENT(exp, rename);
1951         rc = MDP(exp->exp_obd, rename)(exp, op_data, old, oldlen, new,
1952                                        newlen, request);
1953         RETURN(rc);
1954 }
1955
1956 static inline int md_is_subdir(struct obd_export *exp,
1957                                const struct lu_fid *pfid,
1958                                const struct lu_fid *cfid,
1959                                struct ptlrpc_request **request)
1960 {
1961         int rc;
1962         ENTRY;
1963         EXP_CHECK_MD_OP(exp, is_subdir);
1964         EXP_MD_COUNTER_INCREMENT(exp, is_subdir);
1965         rc = MDP(exp->exp_obd, is_subdir)(exp, pfid, cfid, request);
1966         RETURN(rc);
1967 }
1968
1969 static inline int md_setattr(struct obd_export *exp, struct md_op_data *op_data,
1970                              void *ea, int ealen, void *ea2, int ea2len,
1971                              struct ptlrpc_request **request,
1972                              struct md_open_data **mod)
1973 {
1974         int rc;
1975         ENTRY;
1976         EXP_CHECK_MD_OP(exp, setattr);
1977         EXP_MD_COUNTER_INCREMENT(exp, setattr);
1978         rc = MDP(exp->exp_obd, setattr)(exp, op_data, ea, ealen,
1979                                         ea2, ea2len, request, mod);
1980         RETURN(rc);
1981 }
1982
1983 static inline int md_sync(struct obd_export *exp, const struct lu_fid *fid,
1984                           struct obd_capa *oc, struct ptlrpc_request **request)
1985 {
1986         int rc;
1987         ENTRY;
1988         EXP_CHECK_MD_OP(exp, sync);
1989         EXP_MD_COUNTER_INCREMENT(exp, sync);
1990         rc = MDP(exp->exp_obd, sync)(exp, fid, oc, request);
1991         RETURN(rc);
1992 }
1993
1994 static inline int md_readpage(struct obd_export *exp, const struct lu_fid *fid,
1995                               struct obd_capa *oc, __u64 offset,
1996                               struct page *page,
1997                               struct ptlrpc_request **request)
1998 {
1999         int rc;
2000         ENTRY;
2001         EXP_CHECK_MD_OP(exp, readpage);
2002         EXP_MD_COUNTER_INCREMENT(exp, readpage);
2003         rc = MDP(exp->exp_obd, readpage)(exp, fid, oc, offset, page, request);
2004         RETURN(rc);
2005 }
2006
2007 static inline int md_unlink(struct obd_export *exp, struct md_op_data *op_data,
2008                             struct ptlrpc_request **request)
2009 {
2010         int rc;
2011         ENTRY;
2012         EXP_CHECK_MD_OP(exp, unlink);
2013         EXP_MD_COUNTER_INCREMENT(exp, unlink);
2014         rc = MDP(exp->exp_obd, unlink)(exp, op_data, request);
2015         RETURN(rc);
2016 }
2017
2018 static inline int md_get_lustre_md(struct obd_export *exp,
2019                                    struct ptlrpc_request *req,
2020                                    struct obd_export *dt_exp,
2021                                    struct obd_export *md_exp,
2022                                    struct lustre_md *md)
2023 {
2024         ENTRY;
2025         EXP_CHECK_MD_OP(exp, get_lustre_md);
2026         EXP_MD_COUNTER_INCREMENT(exp, get_lustre_md);
2027         RETURN(MDP(exp->exp_obd, get_lustre_md)(exp, req, dt_exp, md_exp, md));
2028 }
2029
2030 static inline int md_free_lustre_md(struct obd_export *exp,
2031                                     struct lustre_md *md)
2032 {
2033         ENTRY;
2034         EXP_CHECK_MD_OP(exp, free_lustre_md);
2035         EXP_MD_COUNTER_INCREMENT(exp, free_lustre_md);
2036         RETURN(MDP(exp->exp_obd, free_lustre_md)(exp, md));
2037 }
2038
2039 static inline int md_setxattr(struct obd_export *exp,
2040                               const struct lu_fid *fid, struct obd_capa *oc,
2041                               obd_valid valid, const char *name,
2042                               const char *input, int input_size,
2043                               int output_size, int flags, __u32 suppgid,
2044                               struct ptlrpc_request **request)
2045 {
2046         ENTRY;
2047         EXP_CHECK_MD_OP(exp, setxattr);
2048         EXP_MD_COUNTER_INCREMENT(exp, setxattr);
2049         RETURN(MDP(exp->exp_obd, setxattr)(exp, fid, oc, valid, name, input,
2050                                            input_size, output_size, flags,
2051                                            suppgid, request));
2052 }
2053
2054 static inline int md_getxattr(struct obd_export *exp,
2055                               const struct lu_fid *fid, struct obd_capa *oc,
2056                               obd_valid valid, const char *name,
2057                               const char *input, int input_size,
2058                               int output_size, int flags,
2059                               struct ptlrpc_request **request)
2060 {
2061         ENTRY;
2062         EXP_CHECK_MD_OP(exp, getxattr);
2063         EXP_MD_COUNTER_INCREMENT(exp, getxattr);
2064         RETURN(MDP(exp->exp_obd, getxattr)(exp, fid, oc, valid, name, input,
2065                                            input_size, output_size, flags,
2066                                            request));
2067 }
2068
2069 static inline int md_set_open_replay_data(struct obd_export *exp,
2070                                           struct obd_client_handle *och,
2071                                           struct ptlrpc_request *open_req)
2072 {
2073         ENTRY;
2074         EXP_CHECK_MD_OP(exp, set_open_replay_data);
2075         EXP_MD_COUNTER_INCREMENT(exp, set_open_replay_data);
2076         RETURN(MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req));
2077 }
2078
2079 static inline int md_clear_open_replay_data(struct obd_export *exp,
2080                                             struct obd_client_handle *och)
2081 {
2082         ENTRY;
2083         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
2084         EXP_MD_COUNTER_INCREMENT(exp, clear_open_replay_data);
2085         RETURN(MDP(exp->exp_obd, clear_open_replay_data)(exp, och));
2086 }
2087
2088 static inline int md_set_lock_data(struct obd_export *exp,
2089                                    __u64 *lockh, void *data)
2090 {
2091         ENTRY;
2092         EXP_CHECK_MD_OP(exp, set_lock_data);
2093         EXP_MD_COUNTER_INCREMENT(exp, set_lock_data);
2094         RETURN(MDP(exp->exp_obd, set_lock_data)(exp, lockh, data));
2095 }
2096
2097 static inline int md_cancel_unused(struct obd_export *exp,
2098                                    const struct lu_fid *fid,
2099                                    ldlm_policy_data_t *policy,
2100                                    ldlm_mode_t mode, int flags, void *opaque)
2101 {
2102         int rc;
2103         ENTRY;
2104
2105         EXP_CHECK_MD_OP(exp, cancel_unused);
2106         EXP_MD_COUNTER_INCREMENT(exp, cancel_unused);
2107
2108         rc = MDP(exp->exp_obd, cancel_unused)(exp, fid, policy, mode,
2109                                               flags, opaque);
2110         RETURN(rc);
2111 }
2112
2113 static inline ldlm_mode_t md_lock_match(struct obd_export *exp, int flags,
2114                                         const struct lu_fid *fid,
2115                                         ldlm_type_t type,
2116                                         ldlm_policy_data_t *policy,
2117                                         ldlm_mode_t mode,
2118                                         struct lustre_handle *lockh)
2119 {
2120         ENTRY;
2121         EXP_CHECK_MD_OP(exp, lock_match);
2122         EXP_MD_COUNTER_INCREMENT(exp, lock_match);
2123         RETURN(MDP(exp->exp_obd, lock_match)(exp, flags, fid, type,
2124                                              policy, mode, lockh));
2125 }
2126
2127 static inline int md_init_ea_size(struct obd_export *exp, int easize,
2128                                   int def_asize, int cookiesize)
2129 {
2130         ENTRY;
2131         EXP_CHECK_MD_OP(exp, init_ea_size);
2132         EXP_MD_COUNTER_INCREMENT(exp, init_ea_size);
2133         RETURN(MDP(exp->exp_obd, init_ea_size)(exp, easize, def_asize,
2134                                                cookiesize));
2135 }
2136
2137 static inline int md_get_remote_perm(struct obd_export *exp,
2138                                      const struct lu_fid *fid,
2139                                      struct obd_capa *oc, __u32 suppgid,
2140                                      struct ptlrpc_request **request)
2141 {
2142         ENTRY;
2143         EXP_CHECK_MD_OP(exp, get_remote_perm);
2144         EXP_MD_COUNTER_INCREMENT(exp, get_remote_perm);
2145         RETURN(MDP(exp->exp_obd, get_remote_perm)(exp, fid, oc, suppgid,
2146                                                   request));
2147 }
2148
2149 static inline int md_renew_capa(struct obd_export *exp, struct obd_capa *ocapa,
2150                                 renew_capa_cb_t cb)
2151 {
2152         int rc;
2153         ENTRY;
2154         EXP_CHECK_MD_OP(exp, renew_capa);
2155         EXP_MD_COUNTER_INCREMENT(exp, renew_capa);
2156         rc = MDP(exp->exp_obd, renew_capa)(exp, ocapa, cb);
2157         RETURN(rc);
2158 }
2159
2160 static inline int md_intent_getattr_async(struct obd_export *exp,
2161                                           struct md_enqueue_info *minfo,
2162                                           struct ldlm_enqueue_info *einfo)
2163 {
2164         int rc;
2165         ENTRY;
2166         EXP_CHECK_MD_OP(exp, intent_getattr_async);
2167         EXP_MD_COUNTER_INCREMENT(exp, intent_getattr_async);
2168         rc = MDP(exp->exp_obd, intent_getattr_async)(exp, minfo, einfo);
2169         RETURN(rc);
2170 }
2171
2172 static inline int md_revalidate_lock(struct obd_export *exp,
2173                                      struct lookup_intent *it,
2174                                      struct lu_fid *fid)
2175 {
2176         int rc;
2177         ENTRY;
2178         EXP_CHECK_MD_OP(exp, revalidate_lock);
2179         EXP_MD_COUNTER_INCREMENT(exp, revalidate_lock);
2180         rc = MDP(exp->exp_obd, revalidate_lock)(exp, it, fid);
2181         RETURN(rc);
2182 }
2183
2184
2185 /* OBD Metadata Support */
2186
2187 extern int obd_init_caches(void);
2188 extern void obd_cleanup_caches(void);
2189
2190 /* support routines */
2191 extern cfs_mem_cache_t *obdo_cachep;
2192
2193 #define OBDO_ALLOC(ptr)                                                       \
2194 do {                                                                          \
2195         OBD_SLAB_ALLOC_PTR((ptr), obdo_cachep);                               \
2196 } while(0)
2197
2198 #define OBDO_FREE(ptr)                                                        \
2199 do {                                                                          \
2200         OBD_SLAB_FREE_PTR((ptr), obdo_cachep);                                \
2201 } while(0)
2202
2203
2204 static inline void obdo2fid(struct obdo *oa, struct lu_fid *fid)
2205 {
2206         /* something here */
2207 }
2208
2209 static inline void fid2obdo(struct lu_fid *fid, struct obdo *oa)
2210 {
2211         /* something here */
2212 }
2213
2214 /* I'm as embarrassed about this as you are.
2215  *
2216  * <shaver> // XXX do not look into _superhack with remaining eye
2217  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
2218 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
2219
2220 /* sysctl.c */
2221 extern void obd_sysctl_init (void);
2222 extern void obd_sysctl_clean (void);
2223
2224 /* uuid.c  */
2225 typedef __u8 class_uuid_t[16];
2226 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
2227
2228 /* lustre_peer.c    */
2229 int lustre_uuid_to_peer(const char *uuid, lnet_nid_t *peer_nid, int index);
2230 int class_add_uuid(const char *uuid, __u64 nid);
2231 int class_del_uuid (const char *uuid);
2232 void class_init_uuidlist(void);
2233 void class_exit_uuidlist(void);
2234
2235 /* mea.c */
2236 int mea_name2idx(struct lmv_stripe_md *mea, const char *name, int namelen);
2237 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
2238
2239 /* prng.c */
2240 void ll_generate_random_uuid(class_uuid_t uuid_out);
2241
2242 #endif /* __LINUX_OBD_CLASS_H */