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 int obd_connect(const struct lu_env *env,
 814                               struct lustre_handle *conn,struct obd_device *obd,
 815                               struct obd_uuid *cluuid,
 816                               struct obd_connect_data *d,
 817                               void *localdata)
 818 {
 819         int rc;
 820 #ifdef LIBCFS_DEBUG
 821         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 822                                                    * check */
 823 #endif
 824         ENTRY;
 825
 826         OBD_CHECK_DEV_ACTIVE(obd);
 827         OBD_CHECK_DT_OP(obd, connect, -EOPNOTSUPP);
 828         OBD_COUNTER_INCREMENT(obd, connect);
 829
 830         rc = OBP(obd, connect)(env, conn, obd, cluuid, d, localdata);
 831         /* check that only subset is granted */
 832         LASSERT(ergo(d != NULL,
 833                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 834         RETURN(rc);
 835 }
 836
 837 static inline int obd_reconnect(const struct lu_env *env,
 838                                 struct obd_export *exp,
 839                                 struct obd_device *obd,
 840                                 struct obd_uuid *cluuid,
 841                                 struct obd_connect_data *d)
 842 {
 843         int rc;
 844 #ifdef LIBCFS_DEBUG
 845         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 846                                                    * check */
 847 #endif
 848
 849         ENTRY;
 850
 851         OBD_CHECK_DEV_ACTIVE(obd);
 852         OBD_CHECK_DT_OP(obd, reconnect, 0);
 853         OBD_COUNTER_INCREMENT(obd, reconnect);
 854
 855         rc = OBP(obd, reconnect)(env, exp, obd, cluuid, d);
 856         /* check that only subset is granted */
 857         LASSERT(ergo(d != NULL,
 858                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 859         RETURN(rc);
 860 }
 861
 862 static inline int obd_disconnect(struct obd_export *exp)
 863 {
 864         int rc;
 865         ENTRY;
 866
 867         EXP_CHECK_DT_OP(exp, disconnect);
 868         EXP_COUNTER_INCREMENT(exp, disconnect);
 869
 870         rc = OBP(exp->exp_obd, disconnect)(exp);
 871         RETURN(rc);
 872 }
 873
 874 static inline int obd_fid_init(struct obd_export *exp)
 875 {
 876         int rc;
 877         ENTRY;
 878
 879         OBD_CHECK_DT_OP(exp->exp_obd, fid_init, 0);
 880         EXP_COUNTER_INCREMENT(exp, fid_init);
 881
 882         rc = OBP(exp->exp_obd, fid_init)(exp);
 883         RETURN(rc);
 884 }
 885
 886 static inline int obd_fid_fini(struct obd_export *exp)
 887 {
 888         int rc;
 889         ENTRY;
 890
 891         OBD_CHECK_DT_OP(exp->exp_obd, fid_fini, 0);
 892         EXP_COUNTER_INCREMENT(exp, fid_fini);
 893
 894         rc = OBP(exp->exp_obd, fid_fini)(exp);
 895         RETURN(rc);
 896 }
 897
 898 static inline int obd_fid_alloc(struct obd_export *exp,
 899                                 struct lu_fid *fid,
 900                                 struct md_op_data *op_data)
 901 {
 902         int rc;
 903         ENTRY;
 904
 905         EXP_CHECK_DT_OP(exp, fid_alloc);
 906         EXP_COUNTER_INCREMENT(exp, fid_alloc);
 907
 908         rc = OBP(exp->exp_obd, fid_alloc)(exp, fid, op_data);
 909         RETURN(rc);
 910 }
 911
 912 static inline int obd_fid_delete(struct obd_export *exp,
 913                                  const struct lu_fid *fid)
 914 {
 915         int rc;
 916         ENTRY;
 917
 918         EXP_CHECK_DT_OP(exp, fid_delete);
 919         EXP_COUNTER_INCREMENT(exp, fid_delete);
 920
 921         rc = OBP(exp->exp_obd, fid_delete)(exp, fid);
 922         RETURN(rc);
 923 }
 924
 925 static inline int obd_ping(struct obd_export *exp)
 926 {
 927         int rc;
 928         ENTRY;
 929
 930         OBD_CHECK_DT_OP(exp->exp_obd, ping, 0);
 931         EXP_COUNTER_INCREMENT(exp, ping);
 932
 933         rc = OBP(exp->exp_obd, ping)(exp);
 934         RETURN(rc);
 935 }
 936
 937 static inline int obd_init_export(struct obd_export *exp)
 938 {
 939         int rc = 0;
 940
 941         ENTRY;
 942         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 943             OBP((exp)->exp_obd, init_export))
 944                 rc = OBP(exp->exp_obd, init_export)(exp);
 945         RETURN(rc);
 946 }
 947
 948 static inline int obd_destroy_export(struct obd_export *exp)
 949 {
 950         ENTRY;
 951         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 952             OBP((exp)->exp_obd, destroy_export))
 953                 OBP(exp->exp_obd, destroy_export)(exp);
 954         RETURN(0);
 955 }
 956
 957 static inline int obd_extent_calc(struct obd_export *exp,
 958                                   struct lov_stripe_md *md,
 959                                   int cmd, obd_off *offset)
 960 {
 961         int rc;
 962         ENTRY;
 963         EXP_CHECK_DT_OP(exp, extent_calc);
 964         rc = OBP(exp->exp_obd, extent_calc)(exp, md, cmd, offset);
 965         RETURN(rc);
 966 }
 967
 968 static inline struct dentry *
 969 obd_lvfs_fid2dentry(struct obd_export *exp, __u64 id_ino, __u32 gen, __u64 gr)
 970 {
 971         LASSERT(exp->exp_obd);
 972
 973         return lvfs_fid2dentry(&exp->exp_obd->obd_lvfs_ctxt, id_ino, gen, gr,
 974                                exp->exp_obd);
 975 }
 976
 977 static inline int
 978 obd_lvfs_open_llog(struct obd_export *exp, __u64 id_ino, struct dentry *dentry)
 979 {
 980         LASSERT(exp->exp_obd);
 981         CERROR("FIXME what's the story here?  This needs to be an obd fn?\n");
 982 #if 0
 983         return lvfs_open_llog(&exp->exp_obd->obd_lvfs_ctxt, id_ino,
 984                               dentry, exp->exp_obd);
 985 #endif
 986         return 0;
 987 }
 988
 989 #ifndef time_before
 990 #define time_before(t1, t2) ((long)t2 - (long)t1 > 0)
 991 #endif
 992
 993 /* @max_age is the oldest time in jiffies that we accept using a cached data.
 994  * If the cache is older than @max_age we will get a new value from the
 995  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
 996 static inline int obd_statfs_async(struct obd_device *obd,
 997                                    struct obd_info *oinfo,
 998                                    __u64 max_age,
 999                                    struct ptlrpc_request_set *rqset)
1000 {
1001         int rc = 0;
1002         ENTRY;
1003
1004         if (obd == NULL)
1005                 RETURN(-EINVAL);
1006
1007         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1008         OBD_COUNTER_INCREMENT(obd, statfs);
1009
1010         CDEBUG(D_SUPER, "%s: osfs %p age "LPU64", max_age "LPU64"\n",
1011                obd->obd_name, &obd->obd_osfs, obd->obd_osfs_age, max_age);
1012         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1013                 rc = OBP(obd, statfs_async)(obd, oinfo, max_age, rqset);
1014         } else {
1015                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1016                        " objects "LPU64"/"LPU64"\n",
1017                        obd->obd_name, &obd->obd_osfs,
1018                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1019                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1020                 spin_lock(&obd->obd_osfs_lock);
1021                 memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
1022                 spin_unlock(&obd->obd_osfs_lock);
1023                 oinfo->oi_flags |= OBD_STATFS_FROM_CACHE;
1024                 if (oinfo->oi_cb_up)
1025                         oinfo->oi_cb_up(oinfo, 0);
1026         }
1027         RETURN(rc);
1028 }
1029
1030 static inline int obd_statfs_rqset(struct obd_device *obd,
1031                                    struct obd_statfs *osfs, __u64 max_age,
1032                                    __u32 flags)
1033 {
1034         struct ptlrpc_request_set *set = NULL;
1035         struct obd_info oinfo = { { { 0 } } };
1036         int rc = 0;
1037         ENTRY;
1038
1039         set =  ptlrpc_prep_set();
1040         if (set == NULL)
1041                 RETURN(-ENOMEM);
1042
1043         oinfo.oi_osfs = osfs;
1044         oinfo.oi_flags = flags;
1045         rc = obd_statfs_async(obd, &oinfo, max_age, set);
1046         if (rc == 0)
1047                 rc = ptlrpc_set_wait(set);
1048         ptlrpc_set_destroy(set);
1049         RETURN(rc);
1050 }
1051
1052 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1053  * If the cache is older than @max_age we will get a new value from the
1054  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1055 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
1056                              __u64 max_age, __u32 flags)
1057 {
1058         int rc = 0;
1059         ENTRY;
1060
1061         if (obd == NULL)
1062                 RETURN(-EINVAL);
1063
1064         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1065         OBD_COUNTER_INCREMENT(obd, statfs);
1066
1067         CDEBUG(D_SUPER, "osfs "LPU64", max_age "LPU64"\n",
1068                obd->obd_osfs_age, max_age);
1069         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1070                 rc = OBP(obd, statfs)(obd, osfs, max_age, flags);
1071                 if (rc == 0) {
1072                         spin_lock(&obd->obd_osfs_lock);
1073                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
1074                         obd->obd_osfs_age = cfs_time_current_64();
1075                         spin_unlock(&obd->obd_osfs_lock);
1076                 }
1077         } else {
1078                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1079                        " objects "LPU64"/"LPU64"\n",
1080                        obd->obd_name, &obd->obd_osfs,
1081                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1082                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1083                 spin_lock(&obd->obd_osfs_lock);
1084                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
1085                 spin_unlock(&obd->obd_osfs_lock);
1086         }
1087         RETURN(rc);
1088 }
1089
1090 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
1091                            struct lov_stripe_md *ea, obd_size start,
1092                            obd_size end, void *capa)
1093 {
1094         int rc;
1095         ENTRY;
1096
1097         OBD_CHECK_DT_OP(exp->exp_obd, sync, -EOPNOTSUPP);
1098         EXP_COUNTER_INCREMENT(exp, sync);
1099
1100         rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end, capa);
1101         RETURN(rc);
1102 }
1103
1104 static inline int obd_punch_rqset(struct obd_export *exp,
1105                                   struct obd_info *oinfo,
1106                                   struct obd_trans_info *oti)
1107 {
1108         struct ptlrpc_request_set *set = NULL;
1109         int rc;
1110         ENTRY;
1111
1112         EXP_CHECK_DT_OP(exp, punch);
1113         EXP_COUNTER_INCREMENT(exp, punch);
1114
1115         set =  ptlrpc_prep_set();
1116         if (set == NULL)
1117                 RETURN(-ENOMEM);
1118
1119         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, set);
1120         if (rc == 0)
1121                 rc = ptlrpc_set_wait(set);
1122         ptlrpc_set_destroy(set);
1123         RETURN(rc);
1124 }
1125
1126 static inline int obd_punch(struct obd_export *exp, struct obd_info *oinfo,
1127                             struct obd_trans_info *oti,
1128                             struct ptlrpc_request_set *rqset)
1129 {
1130         int rc;
1131         ENTRY;
1132
1133         EXP_CHECK_DT_OP(exp, punch);
1134         EXP_COUNTER_INCREMENT(exp, punch);
1135
1136         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, rqset);
1137         RETURN(rc);
1138 }
1139
1140 static inline int obd_brw(int cmd, struct obd_export *exp,
1141                           struct obd_info *oinfo, obd_count oa_bufs,
1142                           struct brw_page *pg, struct obd_trans_info *oti)
1143 {
1144         int rc;
1145         ENTRY;
1146
1147         EXP_CHECK_DT_OP(exp, brw);
1148         EXP_COUNTER_INCREMENT(exp, brw);
1149
1150         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
1151                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
1152                        "or OBD_BRW_CHECK\n");
1153                 LBUG();
1154         }
1155
1156         rc = OBP(exp->exp_obd, brw)(cmd, exp, oinfo, oa_bufs, pg, oti);
1157         RETURN(rc);
1158 }
1159
1160 static inline int obd_brw_async(int cmd, struct obd_export *exp,
1161                                 struct obd_info *oinfo, obd_count oa_bufs,
1162                                 struct brw_page *pg, struct obd_trans_info *oti,
1163                                 struct ptlrpc_request_set *set)
1164 {
1165         int rc;
1166         ENTRY;
1167
1168         EXP_CHECK_DT_OP(exp, brw_async);
1169         EXP_COUNTER_INCREMENT(exp, brw_async);
1170
1171         if (!(cmd & OBD_BRW_RWMASK)) {
1172                 CERROR("obd_brw: cmd must be OBD_BRW_READ or OBD_BRW_WRITE\n");
1173                 LBUG();
1174         }
1175
1176         rc = OBP(exp->exp_obd, brw_async)(cmd, exp, oinfo, oa_bufs, pg,oti,set);
1177         RETURN(rc);
1178 }
1179
1180 static inline int obd_brw_rqset(int cmd, struct obd_export *exp,
1181                                 struct obdo *oa, struct lov_stripe_md *lsm,
1182                                 obd_count oa_bufs, struct brw_page *pg,
1183                                 struct obd_trans_info *oti,
1184                                 struct obd_capa *ocapa)
1185 {
1186         struct ptlrpc_request_set *set = NULL;
1187         struct obd_info oinfo = { { { 0 } } };
1188         int rc = 0;
1189         ENTRY;
1190
1191         set =  ptlrpc_prep_set();
1192         if (set == NULL)
1193                 RETURN(-ENOMEM);
1194
1195         oinfo.oi_oa = oa;
1196         oinfo.oi_md = lsm;
1197         oinfo.oi_capa = ocapa;
1198         rc = obd_brw_async(cmd, exp, &oinfo, oa_bufs, pg, oti, set);
1199         if (rc == 0) {
1200                 rc = ptlrpc_set_wait(set);
1201                 if (rc)
1202                         CERROR("error from callback: rc = %d\n", rc);
1203         } else {
1204                 CDEBUG(rc == -ENOSPC ? D_INODE : D_ERROR,
1205                        "error from obd_brw_async: rc = %d\n", rc);
1206         }
1207         ptlrpc_set_destroy(set);
1208         RETURN(rc);
1209 }
1210
1211 static inline  int obd_prep_async_page(struct obd_export *exp,
1212                                        struct lov_stripe_md *lsm,
1213                                        struct lov_oinfo *loi,
1214                                        cfs_page_t *page, obd_off offset,
1215                                        struct obd_async_page_ops *ops,
1216                                        void *data, void **res, int nocache,
1217                                        struct lustre_handle *lockh)
1218 {
1219         int ret;
1220         ENTRY;
1221
1222         EXP_CHECK_DT_OP(exp, prep_async_page);
1223         EXP_COUNTER_INCREMENT(exp, prep_async_page);
1224
1225         ret = OBP(exp->exp_obd, prep_async_page)(exp, lsm, loi, page, offset,
1226                                                  ops, data, res, nocache,
1227                                                  lockh);
1228         RETURN(ret);
1229 }
1230
1231 /**
1232  * Checks if requested extent lock is compatible with a lock under the page.
1233  *
1234  * Checks if the lock under \a page is compatible with a read or write lock
1235  * (specified by \a rw) for an extent [\a start , \a end].
1236  *
1237  * \param exp obd export (lov or osc)
1238  * \param lsm striping information for the file
1239  * \param res async_page placeholder
1240  * \param rw OBD_BRW_READ if requested for reading,
1241  *           OBD_BRW_WRITE if requested for writing
1242  * \param start start of the requested extent
1243  * \param end end of the requested extent
1244  * \param cookie transparent parameter for passing locking context
1245  *
1246  * \post result == 1, *cookie == context, appropriate lock is referenced or
1247  *
1248  * \retval 1 owned lock is reused for the request
1249  * \retval 0 no lock reused for the request
1250  * \retval -ENOTSUPP reget_short_lock is not exported at this layer
1251  *
1252  * \see obd_release_short_lock
1253  */
1254 static inline int obd_reget_short_lock(struct obd_export *exp,
1255                                        struct lov_stripe_md *lsm,
1256                                        void **res, int rw,
1257                                        obd_off start, obd_off end,
1258                                        void **cookie)
1259 {
1260         ENTRY;
1261
1262         EXP_CHECK_DT_OP(exp, reget_short_lock);
1263         EXP_COUNTER_INCREMENT(exp, reget_short_lock);
1264
1265         RETURN(OBP(exp->exp_obd, reget_short_lock)(exp, lsm, res, rw,
1266                                                    start, end, cookie));
1267 }
1268
1269
1270 /**
1271  * Releases a reference to a lock taken in a "fast" way.
1272  *
1273  * Releases a read or write (specified by \a rw) lock
1274  * referenced by \a cookie.
1275  *
1276  * \param exp obd export (lov or osc)
1277  * \param lsm striping information for the file
1278  * \param end end of the locked extent
1279  * \param rw OBD_BRW_READ if requested for reading,
1280  *           OBD_BRW_WRITE if requested for writing
1281  * \param cookie transparent parameter for passing locking context
1282  *
1283  * \post appropriate lock is dereferenced
1284  *
1285  * \see obd_reget_short_lock
1286  */
1287 static inline int obd_release_short_lock(struct obd_export *exp,
1288                                          struct lov_stripe_md *lsm, obd_off end,
1289                                          void *cookie, int rw)
1290 {
1291         ENTRY;
1292
1293         EXP_CHECK_DT_OP(exp, release_short_lock);
1294         EXP_COUNTER_INCREMENT(exp, release_short_lock);
1295
1296         RETURN(OBP(exp->exp_obd, release_short_lock)(exp, lsm, end,
1297                                                      cookie, rw));
1298 }
1299
1300 static inline int obd_queue_async_io(struct obd_export *exp,
1301                                      struct lov_stripe_md *lsm,
1302                                      struct lov_oinfo *loi, void *cookie,
1303                                      int cmd, obd_off off, int count,
1304                                      obd_flag brw_flags, obd_flag async_flags)
1305 {
1306         int rc;
1307         ENTRY;
1308
1309         EXP_CHECK_DT_OP(exp, queue_async_io);
1310         EXP_COUNTER_INCREMENT(exp, queue_async_io);
1311         LASSERT(cmd & OBD_BRW_RWMASK);
1312
1313         rc = OBP(exp->exp_obd, queue_async_io)(exp, lsm, loi, cookie, cmd, off,
1314                                                count, brw_flags, async_flags);
1315         RETURN(rc);
1316 }
1317
1318 static inline int obd_set_async_flags(struct obd_export *exp,
1319                                       struct lov_stripe_md *lsm,
1320                                       struct lov_oinfo *loi, void *cookie,
1321                                       obd_flag async_flags)
1322 {
1323         int rc;
1324         ENTRY;
1325
1326         EXP_CHECK_DT_OP(exp, set_async_flags);
1327         EXP_COUNTER_INCREMENT(exp, set_async_flags);
1328
1329         rc = OBP(exp->exp_obd, set_async_flags)(exp, lsm, loi, cookie,
1330                                                 async_flags);
1331         RETURN(rc);
1332 }
1333
1334 static inline int obd_queue_group_io(struct obd_export *exp,
1335                                      struct lov_stripe_md *lsm,
1336                                      struct lov_oinfo *loi,
1337                                      struct obd_io_group *oig,
1338                                      void *cookie, int cmd, obd_off off,
1339                                      int count, obd_flag brw_flags,
1340                                      obd_flag async_flags)
1341 {
1342         int rc;
1343         ENTRY;
1344
1345         EXP_CHECK_DT_OP(exp, queue_group_io);
1346         EXP_COUNTER_INCREMENT(exp, queue_group_io);
1347         LASSERT(cmd & OBD_BRW_RWMASK);
1348
1349         rc = OBP(exp->exp_obd, queue_group_io)(exp, lsm, loi, oig, cookie,
1350                                                cmd, off, count, brw_flags,
1351                                                async_flags);
1352         RETURN(rc);
1353 }
1354
1355 static inline int obd_trigger_group_io(struct obd_export *exp,
1356                                        struct lov_stripe_md *lsm,
1357                                        struct lov_oinfo *loi,
1358                                        struct obd_io_group *oig)
1359 {
1360         int rc;
1361         ENTRY;
1362
1363         EXP_CHECK_DT_OP(exp, trigger_group_io);
1364         EXP_COUNTER_INCREMENT(exp, trigger_group_io);
1365
1366         rc = OBP(exp->exp_obd, trigger_group_io)(exp, lsm, loi, oig);
1367         RETURN(rc);
1368 }
1369
1370 static inline int obd_teardown_async_page(struct obd_export *exp,
1371                                           struct lov_stripe_md *lsm,
1372                                           struct lov_oinfo *loi, void *cookie)
1373 {
1374         int rc;
1375         ENTRY;
1376
1377         EXP_CHECK_DT_OP(exp, teardown_async_page);
1378         EXP_COUNTER_INCREMENT(exp, teardown_async_page);
1379
1380         rc = OBP(exp->exp_obd, teardown_async_page)(exp, lsm, loi, cookie);
1381         RETURN(rc);
1382 }
1383
1384 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
1385                              int objcount, struct obd_ioobj *obj,
1386                              int niocount, struct niobuf_remote *remote,
1387                              struct niobuf_local *local,
1388                              struct obd_trans_info *oti,
1389                              struct lustre_capa *capa)
1390 {
1391         int rc;
1392         ENTRY;
1393
1394         EXP_CHECK_DT_OP(exp, preprw);
1395         EXP_COUNTER_INCREMENT(exp, preprw);
1396
1397         rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, niocount,
1398                                        remote, local, oti, capa);
1399         RETURN(rc);
1400 }
1401
1402 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
1403                                int objcount, struct obd_ioobj *obj,
1404                                int niocount, struct niobuf_local *local,
1405                                struct obd_trans_info *oti, int rc)
1406 {
1407         ENTRY;
1408
1409         EXP_CHECK_DT_OP(exp, commitrw);
1410         EXP_COUNTER_INCREMENT(exp, commitrw);
1411
1412         rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj, niocount,
1413                                          local, oti, rc);
1414         RETURN(rc);
1415 }
1416
1417 static inline int obd_merge_lvb(struct obd_export *exp,
1418                                 struct lov_stripe_md *lsm,
1419                                 struct ost_lvb *lvb, int kms_only)
1420 {
1421         int rc;
1422         ENTRY;
1423
1424         EXP_CHECK_DT_OP(exp, merge_lvb);
1425         EXP_COUNTER_INCREMENT(exp, merge_lvb);
1426
1427         rc = OBP(exp->exp_obd, merge_lvb)(exp, lsm, lvb, kms_only);
1428         RETURN(rc);
1429 }
1430
1431 static inline int obd_adjust_kms(struct obd_export *exp,
1432                                  struct lov_stripe_md *lsm, obd_off size,
1433                                  int shrink)
1434 {
1435         int rc;
1436         ENTRY;
1437
1438         EXP_CHECK_DT_OP(exp, adjust_kms);
1439         EXP_COUNTER_INCREMENT(exp, adjust_kms);
1440
1441         rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
1442         RETURN(rc);
1443 }
1444
1445 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1446                                 int len, void *karg, void *uarg)
1447 {
1448         int rc;
1449         ENTRY;
1450
1451         EXP_CHECK_DT_OP(exp, iocontrol);
1452         EXP_COUNTER_INCREMENT(exp, iocontrol);
1453
1454         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1455         RETURN(rc);
1456 }
1457
1458 static inline int obd_enqueue_rqset(struct obd_export *exp,
1459                                     struct obd_info *oinfo,
1460                                     struct ldlm_enqueue_info *einfo)
1461 {
1462         struct ptlrpc_request_set *set = NULL;
1463         int rc;
1464         ENTRY;
1465
1466         EXP_CHECK_DT_OP(exp, enqueue);
1467         EXP_COUNTER_INCREMENT(exp, enqueue);
1468
1469         set =  ptlrpc_prep_set();
1470         if (set == NULL)
1471                 RETURN(-ENOMEM);
1472
1473         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1474         if (rc == 0)
1475                 rc = ptlrpc_set_wait(set);
1476         ptlrpc_set_destroy(set);
1477         RETURN(rc);
1478 }
1479
1480 static inline int obd_enqueue(struct obd_export *exp,
1481                               struct obd_info *oinfo,
1482                               struct ldlm_enqueue_info *einfo,
1483                               struct ptlrpc_request_set *set)
1484 {
1485         int rc;
1486         ENTRY;
1487
1488         EXP_CHECK_DT_OP(exp, enqueue);
1489         EXP_COUNTER_INCREMENT(exp, enqueue);
1490
1491         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1492         RETURN(rc);
1493 }
1494
1495 static inline int obd_match(struct obd_export *exp, struct lov_stripe_md *ea,
1496                             __u32 type, ldlm_policy_data_t *policy, __u32 mode,
1497                             int *flags, void *data, struct lustre_handle *lockh)
1498 {
1499         int rc;
1500         ENTRY;
1501
1502         EXP_CHECK_DT_OP(exp, match);
1503         EXP_COUNTER_INCREMENT(exp, match);
1504
1505         rc = OBP(exp->exp_obd, match)(exp, ea, type, policy, mode, flags, data,
1506                                       lockh);
1507         RETURN(rc);
1508 }
1509
1510 static inline int obd_change_cbdata(struct obd_export *exp,
1511                                     struct lov_stripe_md *lsm,
1512                                     ldlm_iterator_t it, void *data)
1513 {
1514         int rc;
1515         ENTRY;
1516
1517         EXP_CHECK_DT_OP(exp, change_cbdata);
1518         EXP_COUNTER_INCREMENT(exp, change_cbdata);
1519
1520         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1521         RETURN(rc);
1522 }
1523
1524 static inline int obd_cancel(struct obd_export *exp,
1525                              struct lov_stripe_md *ea, __u32 mode,
1526                              struct lustre_handle *lockh)
1527 {
1528         int rc;
1529         ENTRY;
1530
1531         EXP_CHECK_DT_OP(exp, cancel);
1532         EXP_COUNTER_INCREMENT(exp, cancel);
1533
1534         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1535         RETURN(rc);
1536 }
1537
1538 static inline int obd_cancel_unused(struct obd_export *exp,
1539                                     struct lov_stripe_md *ea,
1540                                     int flags, void *opaque)
1541 {
1542         int rc;
1543         ENTRY;
1544
1545         EXP_CHECK_DT_OP(exp, cancel_unused);
1546         EXP_COUNTER_INCREMENT(exp, cancel_unused);
1547
1548         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1549         RETURN(rc);
1550 }
1551
1552 static inline int obd_join_lru(struct obd_export *exp,
1553                                struct lov_stripe_md *ea, int join)
1554 {
1555         int rc;
1556         ENTRY;
1557
1558         EXP_CHECK_DT_OP(exp, join_lru);
1559         EXP_COUNTER_INCREMENT(exp, join_lru);
1560
1561         rc = OBP(exp->exp_obd, join_lru)(exp, ea, join);
1562         RETURN(rc);
1563 }
1564
1565 static inline int obd_pin(struct obd_export *exp, const struct lu_fid *fid,
1566                           struct obd_capa *oc, struct obd_client_handle *handle,
1567                           int flag)
1568 {
1569         int rc;
1570         ENTRY;
1571
1572         EXP_CHECK_DT_OP(exp, pin);
1573         EXP_COUNTER_INCREMENT(exp, pin);
1574
1575         rc = OBP(exp->exp_obd, pin)(exp, fid, oc, handle, flag);
1576         RETURN(rc);
1577 }
1578
1579 static inline int obd_unpin(struct obd_export *exp,
1580                             struct obd_client_handle *handle, int flag)
1581 {
1582         int rc;
1583         ENTRY;
1584
1585         EXP_CHECK_DT_OP(exp, unpin);
1586         EXP_COUNTER_INCREMENT(exp, unpin);
1587
1588         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1589         RETURN(rc);
1590 }
1591
1592
1593 static inline void obd_import_event(struct obd_device *obd,
1594                                     struct obd_import *imp,
1595                                     enum obd_import_event event)
1596 {
1597         ENTRY;
1598         if (!obd) {
1599                 CERROR("NULL device\n");
1600                 EXIT;
1601                 return;
1602         }
1603         if (obd->obd_set_up && OBP(obd, import_event)) {
1604                 OBD_COUNTER_INCREMENT(obd, import_event);
1605                 OBP(obd, import_event)(obd, imp, event);
1606         }
1607         EXIT;
1608 }
1609
1610 static inline int obd_llog_connect(struct obd_export *exp,
1611                                    struct llogd_conn_body *body)
1612 {
1613         int rc;
1614         ENTRY;
1615
1616         OBD_CHECK_DT_OP(exp->exp_obd, llog_connect, 0);
1617         EXP_COUNTER_INCREMENT(exp, llog_connect);
1618
1619         rc = OBP(exp->exp_obd, llog_connect)(exp, body);
1620         RETURN(rc);
1621 }
1622
1623
1624 static inline int obd_notify(struct obd_device *obd,
1625                              struct obd_device *watched,
1626                              enum obd_notify_event ev,
1627                              void *data)
1628 {
1629         int rc;
1630         ENTRY;
1631         OBD_CHECK_DEV(obd);
1632
1633         /* the check for async_recov is a complete hack - I'm hereby
1634            overloading the meaning to also mean "this was called from
1635            mds_postsetup".  I know that my mds is able to handle notifies
1636            by this point, and it needs to get them to execute mds_postrecov. */
1637         if (!obd->obd_set_up && !obd->obd_async_recov) {
1638                 CDEBUG(D_HA, "obd %s not set up\n", obd->obd_name);
1639                 RETURN(-EINVAL);
1640         }
1641
1642         if (!OBP(obd, notify)) {
1643                 CERROR("obd %s has no notify handler\n", obd->obd_name);
1644                 RETURN(-ENOSYS);
1645         }
1646
1647         OBD_COUNTER_INCREMENT(obd, notify);
1648         rc = OBP(obd, notify)(obd, watched, ev, data);
1649         RETURN(rc);
1650 }
1651
1652 static inline int obd_notify_observer(struct obd_device *observer,
1653                                       struct obd_device *observed,
1654                                       enum obd_notify_event ev,
1655                                       void *data)
1656 {
1657         int rc1;
1658         int rc2;
1659
1660         struct obd_notify_upcall *onu;
1661
1662         if (observer->obd_observer)
1663                 rc1 = obd_notify(observer->obd_observer, observed, ev, data);
1664         else
1665                 rc1 = 0;
1666         /*
1667          * Also, call non-obd listener, if any
1668          */
1669         onu = &observer->obd_upcall;
1670         if (onu->onu_upcall != NULL)
1671                 rc2 = onu->onu_upcall(observer, observed, ev, onu->onu_owner);
1672         else
1673                 rc2 = 0;
1674
1675         return rc1 ? rc1 : rc2;
1676 }
1677
1678 static inline int obd_quotacheck(struct obd_export *exp,
1679                                  struct obd_quotactl *oqctl)
1680 {
1681         int rc;
1682         ENTRY;
1683
1684         EXP_CHECK_DT_OP(exp, quotacheck);
1685         EXP_COUNTER_INCREMENT(exp, quotacheck);
1686
1687         rc = OBP(exp->exp_obd, quotacheck)(exp, oqctl);
1688         RETURN(rc);
1689 }
1690
1691 static inline int obd_quotactl(struct obd_export *exp,
1692                                struct obd_quotactl *oqctl)
1693 {
1694         int rc;
1695         ENTRY;
1696
1697         EXP_CHECK_DT_OP(exp, quotactl);
1698         EXP_COUNTER_INCREMENT(exp, quotactl);
1699
1700         rc = OBP(exp->exp_obd, quotactl)(exp, oqctl);
1701         RETURN(rc);
1702 }
1703
1704 static inline int obd_health_check(struct obd_device *obd)
1705 {
1706         /* returns: 0 on healthy
1707          *         >0 on unhealthy + reason code/flag
1708          *            however the only suppored reason == 1 right now
1709          *            We'll need to define some better reasons
1710          *            or flags in the future.
1711          *         <0 on error
1712          */
1713         int rc;
1714         ENTRY;
1715
1716         /* don't use EXP_CHECK_DT_OP, because NULL method is normal here */
1717         if (obd == NULL || !OBT(obd)) {
1718                 CERROR("cleaned up obd\n");
1719                 RETURN(-EOPNOTSUPP);
1720         }
1721         if (!obd->obd_set_up || obd->obd_stopping)
1722                 RETURN(0);
1723         if (!OBP(obd, health_check))
1724                 RETURN(0);
1725
1726         rc = OBP(obd, health_check)(obd);
1727         RETURN(rc);
1728 }
1729
1730 static inline int obd_register_observer(struct obd_device *obd,
1731                                         struct obd_device *observer)
1732 {
1733         ENTRY;
1734         OBD_CHECK_DEV(obd);
1735         if (obd->obd_observer && observer)
1736                 RETURN(-EALREADY);
1737         obd->obd_observer = observer;
1738         RETURN(0);
1739 }
1740
1741 static inline int obd_register_page_removal_cb(struct obd_export *exp,
1742                                                obd_page_removal_cb_t cb,
1743                                                obd_pin_extent_cb pin_cb)
1744 {
1745         int rc;
1746         ENTRY;
1747
1748         OBD_CHECK_DT_OP(exp->exp_obd, register_page_removal_cb, 0);
1749         OBD_COUNTER_INCREMENT(exp->exp_obd, register_page_removal_cb);
1750
1751         rc = OBP(exp->exp_obd, register_page_removal_cb)(exp, cb, pin_cb);
1752         RETURN(rc);
1753 }
1754
1755 static inline int obd_unregister_page_removal_cb(struct obd_export *exp,
1756                                                  obd_page_removal_cb_t cb)
1757 {
1758         int rc;
1759         ENTRY;
1760
1761         OBD_CHECK_DT_OP(exp->exp_obd, unregister_page_removal_cb, 0);
1762         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_page_removal_cb);
1763
1764         rc = OBP(exp->exp_obd, unregister_page_removal_cb)(exp, cb);
1765         RETURN(rc);
1766 }
1767
1768 static inline int obd_register_lock_cancel_cb(struct obd_export *exp,
1769                                               obd_lock_cancel_cb cb)
1770 {
1771         int rc;
1772         ENTRY;
1773
1774         OBD_CHECK_DT_OP(exp->exp_obd, register_lock_cancel_cb, 0);
1775         OBD_COUNTER_INCREMENT(exp->exp_obd, register_lock_cancel_cb);
1776
1777         rc = OBP(exp->exp_obd, register_lock_cancel_cb)(exp, cb);
1778         RETURN(rc);
1779 }
1780
1781 static inline int obd_unregister_lock_cancel_cb(struct obd_export *exp,
1782                                                  obd_lock_cancel_cb cb)
1783 {
1784         int rc;
1785         ENTRY;
1786
1787         OBD_CHECK_DT_OP(exp->exp_obd, unregister_lock_cancel_cb, 0);
1788         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_lock_cancel_cb);
1789
1790         rc = OBP(exp->exp_obd, unregister_lock_cancel_cb)(exp, cb);
1791         RETURN(rc);
1792 }
1793
1794 /* metadata helpers */
1795 static inline int md_getstatus(struct obd_export *exp,
1796                                struct lu_fid *fid, struct obd_capa **pc)
1797 {
1798         int rc;
1799         ENTRY;
1800
1801         EXP_CHECK_MD_OP(exp, getstatus);
1802         EXP_MD_COUNTER_INCREMENT(exp, getstatus);
1803         rc = MDP(exp->exp_obd, getstatus)(exp, fid, pc);
1804         RETURN(rc);
1805 }
1806
1807 static inline int md_getattr(struct obd_export *exp, const struct lu_fid *fid,
1808                              struct obd_capa *oc, obd_valid valid, int ea_size,
1809                              struct ptlrpc_request **request)
1810 {
1811         int rc;
1812         ENTRY;
1813         EXP_CHECK_MD_OP(exp, getattr);
1814         EXP_MD_COUNTER_INCREMENT(exp, getattr);
1815         rc = MDP(exp->exp_obd, getattr)(exp, fid, oc, valid,
1816                                         ea_size, request);
1817         RETURN(rc);
1818 }
1819
1820 static inline int md_change_cbdata(struct obd_export *exp,
1821                                    const struct lu_fid *fid,
1822                                    ldlm_iterator_t it, void *data)
1823 {
1824         int rc;
1825         ENTRY;
1826         EXP_CHECK_MD_OP(exp, change_cbdata);
1827         EXP_MD_COUNTER_INCREMENT(exp, change_cbdata);
1828         rc = MDP(exp->exp_obd, change_cbdata)(exp, fid, it, data);
1829         RETURN(rc);
1830 }
1831
1832 static inline int md_close(struct obd_export *exp, struct md_op_data *op_data,
1833                            struct md_open_data *mod,
1834                            struct ptlrpc_request **request)
1835 {
1836         int rc;
1837         ENTRY;
1838         EXP_CHECK_MD_OP(exp, close);
1839         EXP_MD_COUNTER_INCREMENT(exp, close);
1840         rc = MDP(exp->exp_obd, close)(exp, op_data, mod, request);
1841         RETURN(rc);
1842 }
1843
1844 static inline int md_create(struct obd_export *exp, struct md_op_data *op_data,
1845                             const void *data, int datalen, int mode, __u32 uid,
1846                             __u32 gid, __u32 cap_effective, __u64 rdev,
1847                             struct ptlrpc_request **request)
1848 {
1849         int rc;
1850         ENTRY;
1851         EXP_CHECK_MD_OP(exp, create);
1852         EXP_MD_COUNTER_INCREMENT(exp, create);
1853         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1854                                        uid, gid, cap_effective, rdev, request);
1855         RETURN(rc);
1856 }
1857
1858 static inline int md_done_writing(struct obd_export *exp,
1859                                   struct md_op_data *op_data,
1860                                   struct md_open_data *mod)
1861 {
1862         int rc;
1863         ENTRY;
1864         EXP_CHECK_MD_OP(exp, done_writing);
1865         EXP_MD_COUNTER_INCREMENT(exp, done_writing);
1866         rc = MDP(exp->exp_obd, done_writing)(exp, op_data, mod);
1867         RETURN(rc);
1868 }
1869
1870 static inline int md_enqueue(struct obd_export *exp,
1871                              struct ldlm_enqueue_info *einfo,
1872                              struct lookup_intent *it,
1873                              struct md_op_data *op_data,
1874                              struct lustre_handle *lockh,
1875                              void *lmm, int lmmsize,
1876                              int extra_lock_flags)
1877 {
1878         int rc;
1879         ENTRY;
1880         EXP_CHECK_MD_OP(exp, enqueue);
1881         EXP_MD_COUNTER_INCREMENT(exp, enqueue);
1882         rc = MDP(exp->exp_obd, enqueue)(exp, einfo, it, op_data, lockh,
1883                                         lmm, lmmsize, extra_lock_flags);
1884         RETURN(rc);
1885 }
1886
1887 static inline int md_getattr_name(struct obd_export *exp,
1888                                   const struct lu_fid *fid, struct obd_capa *oc,
1889                                   const char *name, int namelen,
1890                                   obd_valid valid, int ea_size, __u32 suppgid,
1891                                   struct ptlrpc_request **request)
1892 {
1893         int rc;
1894         ENTRY;
1895         EXP_CHECK_MD_OP(exp, getattr_name);
1896         EXP_MD_COUNTER_INCREMENT(exp, getattr_name);
1897         rc = MDP(exp->exp_obd, getattr_name)(exp, fid, oc, name, namelen,
1898                                              valid, ea_size, suppgid, request);
1899         RETURN(rc);
1900 }
1901
1902 static inline int md_intent_lock(struct obd_export *exp,
1903                                  struct md_op_data *op_data, void *lmm,
1904                                  int lmmsize, struct lookup_intent *it,
1905                                  int flags, struct ptlrpc_request **reqp,
1906                                  ldlm_blocking_callback cb_blocking,
1907                                  int extra_lock_flags)
1908 {
1909         int rc;
1910         ENTRY;
1911         EXP_CHECK_MD_OP(exp, intent_lock);
1912         EXP_MD_COUNTER_INCREMENT(exp, intent_lock);
1913         rc = MDP(exp->exp_obd, intent_lock)(exp, op_data, lmm, lmmsize,
1914                                             it, flags, reqp, cb_blocking,
1915                                             extra_lock_flags);
1916         RETURN(rc);
1917 }
1918
1919 static inline int md_link(struct obd_export *exp, struct md_op_data *op_data,
1920                           struct ptlrpc_request **request)
1921 {
1922         int rc;
1923         ENTRY;
1924         EXP_CHECK_MD_OP(exp, link);
1925         EXP_MD_COUNTER_INCREMENT(exp, link);
1926         rc = MDP(exp->exp_obd, link)(exp, op_data, request);
1927         RETURN(rc);
1928 }
1929
1930 static inline int md_rename(struct obd_export *exp, struct md_op_data *op_data,
1931                             const char *old, int oldlen, const char *new,
1932                             int newlen, struct ptlrpc_request **request)
1933 {
1934         int rc;
1935         ENTRY;
1936         EXP_CHECK_MD_OP(exp, rename);
1937         EXP_MD_COUNTER_INCREMENT(exp, rename);
1938         rc = MDP(exp->exp_obd, rename)(exp, op_data, old, oldlen, new,
1939                                        newlen, request);
1940         RETURN(rc);
1941 }
1942
1943 static inline int md_is_subdir(struct obd_export *exp,
1944                                const struct lu_fid *pfid,
1945                                const struct lu_fid *cfid,
1946                                struct ptlrpc_request **request)
1947 {
1948         int rc;
1949         ENTRY;
1950         EXP_CHECK_MD_OP(exp, is_subdir);
1951         EXP_MD_COUNTER_INCREMENT(exp, is_subdir);
1952         rc = MDP(exp->exp_obd, is_subdir)(exp, pfid, cfid, request);
1953         RETURN(rc);
1954 }
1955
1956 static inline int md_setattr(struct obd_export *exp, struct md_op_data *op_data,
1957                              void *ea, int ealen, void *ea2, int ea2len,
1958                              struct ptlrpc_request **request,
1959                              struct md_open_data **mod)
1960 {
1961         int rc;
1962         ENTRY;
1963         EXP_CHECK_MD_OP(exp, setattr);
1964         EXP_MD_COUNTER_INCREMENT(exp, setattr);
1965         rc = MDP(exp->exp_obd, setattr)(exp, op_data, ea, ealen,
1966                                         ea2, ea2len, request, mod);
1967         RETURN(rc);
1968 }
1969
1970 static inline int md_sync(struct obd_export *exp, const struct lu_fid *fid,
1971                           struct obd_capa *oc, struct ptlrpc_request **request)
1972 {
1973         int rc;
1974         ENTRY;
1975         EXP_CHECK_MD_OP(exp, sync);
1976         EXP_MD_COUNTER_INCREMENT(exp, sync);
1977         rc = MDP(exp->exp_obd, sync)(exp, fid, oc, request);
1978         RETURN(rc);
1979 }
1980
1981 static inline int md_readpage(struct obd_export *exp, const struct lu_fid *fid,
1982                               struct obd_capa *oc, __u64 offset,
1983                               struct page *page,
1984                               struct ptlrpc_request **request)
1985 {
1986         int rc;
1987         ENTRY;
1988         EXP_CHECK_MD_OP(exp, readpage);
1989         EXP_MD_COUNTER_INCREMENT(exp, readpage);
1990         rc = MDP(exp->exp_obd, readpage)(exp, fid, oc, offset, page, request);
1991         RETURN(rc);
1992 }
1993
1994 static inline int md_unlink(struct obd_export *exp, struct md_op_data *op_data,
1995                             struct ptlrpc_request **request)
1996 {
1997         int rc;
1998         ENTRY;
1999         EXP_CHECK_MD_OP(exp, unlink);
2000         EXP_MD_COUNTER_INCREMENT(exp, unlink);
2001         rc = MDP(exp->exp_obd, unlink)(exp, op_data, request);
2002         RETURN(rc);
2003 }
2004
2005 static inline int md_get_lustre_md(struct obd_export *exp,
2006                                    struct ptlrpc_request *req,
2007                                    struct obd_export *dt_exp,
2008                                    struct obd_export *md_exp,
2009                                    struct lustre_md *md)
2010 {
2011         ENTRY;
2012         EXP_CHECK_MD_OP(exp, get_lustre_md);
2013         EXP_MD_COUNTER_INCREMENT(exp, get_lustre_md);
2014         RETURN(MDP(exp->exp_obd, get_lustre_md)(exp, req, dt_exp, md_exp, md));
2015 }
2016
2017 static inline int md_free_lustre_md(struct obd_export *exp,
2018                                     struct lustre_md *md)
2019 {
2020         ENTRY;
2021         EXP_CHECK_MD_OP(exp, free_lustre_md);
2022         EXP_MD_COUNTER_INCREMENT(exp, free_lustre_md);
2023         RETURN(MDP(exp->exp_obd, free_lustre_md)(exp, md));
2024 }
2025
2026 static inline int md_setxattr(struct obd_export *exp,
2027                               const struct lu_fid *fid, struct obd_capa *oc,
2028                               obd_valid valid, const char *name,
2029                               const char *input, int input_size,
2030                               int output_size, int flags, __u32 suppgid,
2031                               struct ptlrpc_request **request)
2032 {
2033         ENTRY;
2034         EXP_CHECK_MD_OP(exp, setxattr);
2035         EXP_MD_COUNTER_INCREMENT(exp, setxattr);
2036         RETURN(MDP(exp->exp_obd, setxattr)(exp, fid, oc, valid, name, input,
2037                                            input_size, output_size, flags,
2038                                            suppgid, request));
2039 }
2040
2041 static inline int md_getxattr(struct obd_export *exp,
2042                               const struct lu_fid *fid, struct obd_capa *oc,
2043                               obd_valid valid, const char *name,
2044                               const char *input, int input_size,
2045                               int output_size, int flags,
2046                               struct ptlrpc_request **request)
2047 {
2048         ENTRY;
2049         EXP_CHECK_MD_OP(exp, getxattr);
2050         EXP_MD_COUNTER_INCREMENT(exp, getxattr);
2051         RETURN(MDP(exp->exp_obd, getxattr)(exp, fid, oc, valid, name, input,
2052                                            input_size, output_size, flags,
2053                                            request));
2054 }
2055
2056 static inline int md_set_open_replay_data(struct obd_export *exp,
2057                                           struct obd_client_handle *och,
2058                                           struct ptlrpc_request *open_req)
2059 {
2060         ENTRY;
2061         EXP_CHECK_MD_OP(exp, set_open_replay_data);
2062         EXP_MD_COUNTER_INCREMENT(exp, set_open_replay_data);
2063         RETURN(MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req));
2064 }
2065
2066 static inline int md_clear_open_replay_data(struct obd_export *exp,
2067                                             struct obd_client_handle *och)
2068 {
2069         ENTRY;
2070         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
2071         EXP_MD_COUNTER_INCREMENT(exp, clear_open_replay_data);
2072         RETURN(MDP(exp->exp_obd, clear_open_replay_data)(exp, och));
2073 }
2074
2075 static inline int md_set_lock_data(struct obd_export *exp,
2076                                    __u64 *lockh, void *data)
2077 {
2078         ENTRY;
2079         EXP_CHECK_MD_OP(exp, set_lock_data);
2080         EXP_MD_COUNTER_INCREMENT(exp, set_lock_data);
2081         RETURN(MDP(exp->exp_obd, set_lock_data)(exp, lockh, data));
2082 }
2083
2084 static inline int md_cancel_unused(struct obd_export *exp,
2085                                    const struct lu_fid *fid,
2086                                    ldlm_policy_data_t *policy,
2087                                    ldlm_mode_t mode, int flags, void *opaque)
2088 {
2089         int rc;
2090         ENTRY;
2091
2092         EXP_CHECK_MD_OP(exp, cancel_unused);
2093         EXP_MD_COUNTER_INCREMENT(exp, cancel_unused);
2094
2095         rc = MDP(exp->exp_obd, cancel_unused)(exp, fid, policy, mode,
2096                                               flags, opaque);
2097         RETURN(rc);
2098 }
2099
2100 static inline ldlm_mode_t md_lock_match(struct obd_export *exp, int flags,
2101                                         const struct lu_fid *fid,
2102                                         ldlm_type_t type,
2103                                         ldlm_policy_data_t *policy,
2104                                         ldlm_mode_t mode,
2105                                         struct lustre_handle *lockh)
2106 {
2107         ENTRY;
2108         EXP_CHECK_MD_OP(exp, lock_match);
2109         EXP_MD_COUNTER_INCREMENT(exp, lock_match);
2110         RETURN(MDP(exp->exp_obd, lock_match)(exp, flags, fid, type,
2111                                              policy, mode, lockh));
2112 }
2113
2114 static inline int md_init_ea_size(struct obd_export *exp, int easize,
2115                                   int def_asize, int cookiesize)
2116 {
2117         ENTRY;
2118         EXP_CHECK_MD_OP(exp, init_ea_size);
2119         EXP_MD_COUNTER_INCREMENT(exp, init_ea_size);
2120         RETURN(MDP(exp->exp_obd, init_ea_size)(exp, easize, def_asize,
2121                                                cookiesize));
2122 }
2123
2124 static inline int md_get_remote_perm(struct obd_export *exp,
2125                                      const struct lu_fid *fid,
2126                                      struct obd_capa *oc, __u32 suppgid,
2127                                      struct ptlrpc_request **request)
2128 {
2129         ENTRY;
2130         EXP_CHECK_MD_OP(exp, get_remote_perm);
2131         EXP_MD_COUNTER_INCREMENT(exp, get_remote_perm);
2132         RETURN(MDP(exp->exp_obd, get_remote_perm)(exp, fid, oc, suppgid,
2133                                                   request));
2134 }
2135
2136 static inline int md_renew_capa(struct obd_export *exp, struct obd_capa *ocapa,
2137                                 renew_capa_cb_t cb)
2138 {
2139         int rc;
2140         ENTRY;
2141         EXP_CHECK_MD_OP(exp, renew_capa);
2142         EXP_MD_COUNTER_INCREMENT(exp, renew_capa);
2143         rc = MDP(exp->exp_obd, renew_capa)(exp, ocapa, cb);
2144         RETURN(rc);
2145 }
2146
2147 static inline int md_intent_getattr_async(struct obd_export *exp,
2148                                           struct md_enqueue_info *minfo,
2149                                           struct ldlm_enqueue_info *einfo)
2150 {
2151         int rc;
2152         ENTRY;
2153         EXP_CHECK_MD_OP(exp, intent_getattr_async);
2154         EXP_MD_COUNTER_INCREMENT(exp, intent_getattr_async);
2155         rc = MDP(exp->exp_obd, intent_getattr_async)(exp, minfo, einfo);
2156         RETURN(rc);
2157 }
2158
2159 static inline int md_revalidate_lock(struct obd_export *exp,
2160                                      struct lookup_intent *it,
2161                                      struct lu_fid *fid)
2162 {
2163         int rc;
2164         ENTRY;
2165         EXP_CHECK_MD_OP(exp, revalidate_lock);
2166         EXP_MD_COUNTER_INCREMENT(exp, revalidate_lock);
2167         rc = MDP(exp->exp_obd, revalidate_lock)(exp, it, fid);
2168         RETURN(rc);
2169 }
2170
2171
2172 /* OBD Metadata Support */
2173
2174 extern int obd_init_caches(void);
2175 extern void obd_cleanup_caches(void);
2176
2177 /* support routines */
2178 extern cfs_mem_cache_t *obdo_cachep;
2179
2180 #define OBDO_ALLOC(ptr)                                                       \
2181 do {                                                                          \
2182         OBD_SLAB_ALLOC_PTR((ptr), obdo_cachep);                               \
2183 } while(0)
2184
2185 #define OBDO_FREE(ptr)                                                        \
2186 do {                                                                          \
2187         OBD_SLAB_FREE_PTR((ptr), obdo_cachep);                                \
2188 } while(0)
2189
2190
2191 static inline void obdo2fid(struct obdo *oa, struct lu_fid *fid)
2192 {
2193         /* something here */
2194 }
2195
2196 static inline void fid2obdo(struct lu_fid *fid, struct obdo *oa)
2197 {
2198         /* something here */
2199 }
2200
2201 /* I'm as embarrassed about this as you are.
2202  *
2203  * <shaver> // XXX do not look into _superhack with remaining eye
2204  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
2205 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
2206
2207 /* sysctl.c */
2208 extern void obd_sysctl_init (void);
2209 extern void obd_sysctl_clean (void);
2210
2211 /* uuid.c  */
2212 typedef __u8 class_uuid_t[16];
2213 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
2214
2215 /* lustre_peer.c    */
2216 int lustre_uuid_to_peer(const char *uuid, lnet_nid_t *peer_nid, int index);
2217 int class_add_uuid(const char *uuid, __u64 nid);
2218 int class_del_uuid (const char *uuid);
2219 void class_init_uuidlist(void);
2220 void class_exit_uuidlist(void);
2221
2222 /* mea.c */
2223 int mea_name2idx(struct lmv_stripe_md *mea, const char *name, int namelen);
2224 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
2225
2226 /* prng.c */
2227 void ll_generate_random_uuid(class_uuid_t uuid_out);
2228
2229 #endif /* __LINUX_OBD_CLASS_H */