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