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 [sun.com URL with a
  20  * copy of GPLv2].
  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
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  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 {
 404         int rc;
 405         ENTRY;
 406
 407         EXP_CHECK_DT_OP(exp, get_info);
 408         EXP_COUNTER_INCREMENT(exp, get_info);
 409
 410         rc = OBP(exp->exp_obd, get_info)(exp, keylen, key, vallen, val);
 411         RETURN(rc);
 412 }
 413
 414 static inline int obd_set_info_async(struct obd_export *exp, obd_count keylen,
 415                                      void *key, obd_count vallen, void *val,
 416                                      struct ptlrpc_request_set *set)
 417 {
 418         int rc;
 419         ENTRY;
 420
 421         EXP_CHECK_DT_OP(exp, set_info_async);
 422         EXP_COUNTER_INCREMENT(exp, set_info_async);
 423
 424         rc = OBP(exp->exp_obd, set_info_async)(exp, keylen, key, vallen, val,
 425                                                set);
 426         RETURN(rc);
 427 }
 428
 429 #ifdef __KERNEL__
 430 #define DECLARE_LU_VARS(ldt, d)                 \
 431         struct lu_device_type *ldt;             \
 432         struct lu_device *d
 433 #else
 434 #define DECLARE_LU_VARS(ldt, d)                                 \
 435         extern void __placeholder_to_put_a_semicolon(void)
 436 #endif
 437 static inline int obd_setup(struct obd_device *obd, struct lustre_cfg *cfg)
 438 {
 439         int rc;
 440         DECLARE_LU_VARS(ldt, d);
 441         ENTRY;
 442
 443 #ifdef __KERNEL__
 444         ldt = obd->obd_type->typ_lu;
 445         if (ldt != NULL) {
 446                 struct lu_env env;
 447
 448                 rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
 449                 if (rc == 0) {
 450                         d = ldt->ldt_ops->ldto_device_alloc(&env, ldt, cfg);
 451                         lu_env_fini(&env);
 452                         if (!IS_ERR(d)) {
 453                                 obd->obd_lu_dev = d;
 454                                 d->ld_obd = obd;
 455                                 rc = 0;
 456                         } else
 457                                 rc = PTR_ERR(d);
 458                 }
 459         } else
 460 #endif
 461         {
 462                 OBD_CHECK_DT_OP(obd, setup, -EOPNOTSUPP);
 463                 OBD_COUNTER_INCREMENT(obd, setup);
 464                 rc = OBP(obd, setup)(obd, cfg);
 465         }
 466         RETURN(rc);
 467 }
 468
 469 static inline int obd_precleanup(struct obd_device *obd,
 470                                  enum obd_cleanup_stage cleanup_stage)
 471 {
 472         int rc;
 473         DECLARE_LU_VARS(ldt, d);
 474         ENTRY;
 475
 476         OBD_CHECK_DEV(obd);
 477 #ifdef __KERNEL__
 478         ldt = obd->obd_type->typ_lu;
 479         d = obd->obd_lu_dev;
 480         if (ldt != NULL) {
 481                 LASSERT(d != NULL);
 482                 if (cleanup_stage == OBD_CLEANUP_EXPORTS) {
 483                         struct lu_env env;
 484
 485                         rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
 486                         if (rc == 0) {
 487                                 ldt->ldt_ops->ldto_device_fini(&env, d);
 488                                 lu_env_fini(&env);
 489                         }
 490                 } else {
 491                         rc = 0;
 492                 }
 493         } else
 494 #endif
 495         {
 496                 OBD_CHECK_DT_OP(obd, precleanup, 0);
 497                 rc = OBP(obd, precleanup)(obd, cleanup_stage);
 498         }
 499
 500         OBD_COUNTER_INCREMENT(obd, precleanup);
 501         RETURN(rc);
 502 }
 503
 504 static inline int obd_cleanup(struct obd_device *obd)
 505 {
 506         int rc;
 507         DECLARE_LU_VARS(ldt, d);
 508         ENTRY;
 509
 510         OBD_CHECK_DEV(obd);
 511
 512 #ifdef __KERNEL__
 513         ldt = obd->obd_type->typ_lu;
 514         d = obd->obd_lu_dev;
 515         if (ldt != NULL) {
 516                 struct lu_env env;
 517                 LASSERT(d != NULL);
 518
 519                 rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
 520                 if (rc == 0) {
 521                         ldt->ldt_ops->ldto_device_free(&env, d);
 522                         lu_env_fini(&env);
 523                         obd->obd_lu_dev = NULL;
 524                 }
 525         } else
 526 #endif
 527         {
 528                 OBD_CHECK_DT_OP(obd, cleanup, 0);
 529                 rc = OBP(obd, cleanup)(obd);
 530         }
 531         OBD_COUNTER_INCREMENT(obd, cleanup);
 532         RETURN(rc);
 533 }
 534
 535 static inline int
 536 obd_process_config(struct obd_device *obd, int datalen, void *data)
 537 {
 538         int rc;
 539         DECLARE_LU_VARS(ldt, d);
 540         ENTRY;
 541
 542         OBD_CHECK_DEV(obd);
 543
 544 #ifdef __KERNEL__
 545         ldt = obd->obd_type->typ_lu;
 546         d = obd->obd_lu_dev;
 547         if (ldt != NULL && d != NULL) {
 548                 struct lu_env env;
 549
 550                 rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
 551                 if (rc == 0) {
 552                         rc = d->ld_ops->ldo_process_config(&env, d, data);
 553                         lu_env_fini(&env);
 554                 }
 555         } else
 556 #endif
 557         {
 558                 OBD_CHECK_DT_OP(obd, process_config, -EOPNOTSUPP);
 559                 rc = OBP(obd, process_config)(obd, datalen, data);
 560         }
 561         OBD_COUNTER_INCREMENT(obd, process_config);
 562
 563         RETURN(rc);
 564 }
 565
 566 /* Pack an in-memory MD struct for storage on disk.
 567  * Returns +ve size of packed MD (0 for free), or -ve error.
 568  *
 569  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 570  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 571  * If @*disk_tgt == NULL, it will be allocated
 572  */
 573 static inline int obd_packmd(struct obd_export *exp,
 574                              struct lov_mds_md **disk_tgt,
 575                              struct lov_stripe_md *mem_src)
 576 {
 577         int rc;
 578         ENTRY;
 579
 580         EXP_CHECK_DT_OP(exp, packmd);
 581         EXP_COUNTER_INCREMENT(exp, packmd);
 582
 583         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 584         RETURN(rc);
 585 }
 586
 587 static inline int obd_size_diskmd(struct obd_export *exp,
 588                                   struct lov_stripe_md *mem_src)
 589 {
 590         return obd_packmd(exp, NULL, mem_src);
 591 }
 592
 593 /* helper functions */
 594 static inline int obd_alloc_diskmd(struct obd_export *exp,
 595                                    struct lov_mds_md **disk_tgt)
 596 {
 597         LASSERT(disk_tgt);
 598         LASSERT(*disk_tgt == NULL);
 599         return obd_packmd(exp, disk_tgt, NULL);
 600 }
 601
 602 static inline int obd_free_diskmd(struct obd_export *exp,
 603                                   struct lov_mds_md **disk_tgt)
 604 {
 605         LASSERT(disk_tgt);
 606         LASSERT(*disk_tgt);
 607         return obd_packmd(exp, disk_tgt, NULL);
 608 }
 609
 610 /* Unpack an MD struct from disk to in-memory format.
 611  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 612  *
 613  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 614  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 615  * If @*mem_tgt == NULL, it will be allocated
 616  */
 617 static inline int obd_unpackmd(struct obd_export *exp,
 618                                struct lov_stripe_md **mem_tgt,
 619                                struct lov_mds_md *disk_src,
 620                                int disk_len)
 621 {
 622         int rc;
 623         ENTRY;
 624
 625         EXP_CHECK_DT_OP(exp, unpackmd);
 626         EXP_COUNTER_INCREMENT(exp, unpackmd);
 627
 628         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 629         RETURN(rc);
 630 }
 631
 632 /* helper functions */
 633 static inline int obd_alloc_memmd(struct obd_export *exp,
 634                                   struct lov_stripe_md **mem_tgt)
 635 {
 636         LASSERT(mem_tgt);
 637         LASSERT(*mem_tgt == NULL);
 638         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 639 }
 640
 641 static inline int obd_free_memmd(struct obd_export *exp,
 642                                  struct lov_stripe_md **mem_tgt)
 643 {
 644         LASSERT(mem_tgt);
 645         LASSERT(*mem_tgt);
 646         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 647 }
 648
 649 static inline int obd_checkmd(struct obd_export *exp,
 650                               struct obd_export *md_exp,
 651                               struct lov_stripe_md *mem_tgt)
 652 {
 653         int rc;
 654         ENTRY;
 655
 656         EXP_CHECK_DT_OP(exp, checkmd);
 657         EXP_COUNTER_INCREMENT(exp, checkmd);
 658
 659         rc = OBP(exp->exp_obd, checkmd)(exp, md_exp, mem_tgt);
 660         RETURN(rc);
 661 }
 662
 663 static inline int obd_precreate(struct obd_export *exp)
 664 {
 665         int rc;
 666         ENTRY;
 667
 668         EXP_CHECK_DT_OP(exp, precreate);
 669         OBD_COUNTER_INCREMENT(exp->exp_obd, precreate);
 670
 671         rc = OBP(exp->exp_obd, precreate)(exp);
 672         RETURN(rc);
 673 }
 674
 675 static inline int obd_create(struct obd_export *exp, struct obdo *obdo,
 676                              struct lov_stripe_md **ea,
 677                              struct obd_trans_info *oti)
 678 {
 679         int rc;
 680         ENTRY;
 681
 682         EXP_CHECK_DT_OP(exp, create);
 683         EXP_COUNTER_INCREMENT(exp, create);
 684
 685         rc = OBP(exp->exp_obd, create)(exp, obdo, ea, oti);
 686         RETURN(rc);
 687 }
 688
 689 static inline int obd_destroy(struct obd_export *exp, struct obdo *obdo,
 690                               struct lov_stripe_md *ea,
 691                               struct obd_trans_info *oti,
 692                               struct obd_export *md_exp)
 693 {
 694         int rc;
 695         ENTRY;
 696
 697         EXP_CHECK_DT_OP(exp, destroy);
 698         EXP_COUNTER_INCREMENT(exp, destroy);
 699
 700         rc = OBP(exp->exp_obd, destroy)(exp, obdo, ea, oti, md_exp);
 701         RETURN(rc);
 702 }
 703
 704 static inline int obd_getattr(struct obd_export *exp, struct obd_info *oinfo)
 705 {
 706         int rc;
 707         ENTRY;
 708
 709         EXP_CHECK_DT_OP(exp, getattr);
 710         EXP_COUNTER_INCREMENT(exp, getattr);
 711
 712         rc = OBP(exp->exp_obd, getattr)(exp, oinfo);
 713         RETURN(rc);
 714 }
 715
 716 static inline int obd_getattr_async(struct obd_export *exp,
 717                                     struct obd_info *oinfo,
 718                                     struct ptlrpc_request_set *set)
 719 {
 720         int rc;
 721         ENTRY;
 722
 723         EXP_CHECK_DT_OP(exp, getattr_async);
 724         EXP_COUNTER_INCREMENT(exp, getattr_async);
 725
 726         rc = OBP(exp->exp_obd, getattr_async)(exp, oinfo, set);
 727         RETURN(rc);
 728 }
 729
 730 static inline int obd_setattr(struct obd_export *exp, struct obd_info *oinfo,
 731                               struct obd_trans_info *oti)
 732 {
 733         int rc;
 734         ENTRY;
 735
 736         EXP_CHECK_DT_OP(exp, setattr);
 737         EXP_COUNTER_INCREMENT(exp, setattr);
 738
 739         rc = OBP(exp->exp_obd, setattr)(exp, oinfo, oti);
 740         RETURN(rc);
 741 }
 742
 743 /* This performs all the requests set init/wait/destroy actions. */
 744 static inline int obd_setattr_rqset(struct obd_export *exp,
 745                                     struct obd_info *oinfo,
 746                                     struct obd_trans_info *oti)
 747 {
 748         struct ptlrpc_request_set *set = NULL;
 749         int rc;
 750         ENTRY;
 751
 752         EXP_CHECK_DT_OP(exp, setattr_async);
 753         EXP_COUNTER_INCREMENT(exp, setattr_async);
 754
 755         set =  ptlrpc_prep_set();
 756         if (set == NULL)
 757                 RETURN(-ENOMEM);
 758
 759         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 760         if (rc == 0)
 761                 rc = ptlrpc_set_wait(set);
 762         ptlrpc_set_destroy(set);
 763         RETURN(rc);
 764 }
 765
 766 /* This adds all the requests into @set if @set != NULL, otherwise
 767    all requests are sent asynchronously without waiting for response. */
 768 static inline int obd_setattr_async(struct obd_export *exp,
 769                                     struct obd_info *oinfo,
 770                                     struct obd_trans_info *oti,
 771                                     struct ptlrpc_request_set *set)
 772 {
 773         int rc;
 774         ENTRY;
 775
 776         EXP_CHECK_DT_OP(exp, setattr_async);
 777         EXP_COUNTER_INCREMENT(exp, setattr_async);
 778
 779         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 780         RETURN(rc);
 781 }
 782
 783 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 784                                int priority)
 785 {
 786         struct obd_device *obd = imp->imp_obd;
 787         int rc;
 788         ENTRY;
 789
 790         OBD_CHECK_DEV_ACTIVE(obd);
 791         OBD_CHECK_DT_OP(obd, add_conn, -EOPNOTSUPP);
 792         OBD_COUNTER_INCREMENT(obd, add_conn);
 793
 794         rc = OBP(obd, add_conn)(imp, uuid, priority);
 795         RETURN(rc);
 796 }
 797
 798 static inline int obd_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
 799 {
 800         struct obd_device *obd = imp->imp_obd;
 801         int rc;
 802         ENTRY;
 803
 804         OBD_CHECK_DEV_ACTIVE(obd);
 805         OBD_CHECK_DT_OP(obd, del_conn, -EOPNOTSUPP);
 806         OBD_COUNTER_INCREMENT(obd, del_conn);
 807
 808         rc = OBP(obd, del_conn)(imp, uuid);
 809         RETURN(rc);
 810 }
 811
 812 static inline int obd_connect(const struct lu_env *env,
 813                               struct lustre_handle *conn,struct obd_device *obd,
 814                               struct obd_uuid *cluuid,
 815                               struct obd_connect_data *d,
 816                               void *localdata)
 817 {
 818         int rc;
 819 #ifdef LIBCFS_DEBUG
 820         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 821                                                    * check */
 822 #endif
 823         ENTRY;
 824
 825         OBD_CHECK_DEV_ACTIVE(obd);
 826         OBD_CHECK_DT_OP(obd, connect, -EOPNOTSUPP);
 827         OBD_COUNTER_INCREMENT(obd, connect);
 828
 829         rc = OBP(obd, connect)(env, conn, obd, cluuid, d, localdata);
 830         /* check that only subset is granted */
 831         LASSERT(ergo(d != NULL,
 832                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 833         RETURN(rc);
 834 }
 835
 836 static inline int obd_reconnect(const struct lu_env *env,
 837                                 struct obd_export *exp,
 838                                 struct obd_device *obd,
 839                                 struct obd_uuid *cluuid,
 840                                 struct obd_connect_data *d)
 841 {
 842         int rc;
 843 #ifdef LIBCFS_DEBUG
 844         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 845                                                    * check */
 846 #endif
 847
 848         ENTRY;
 849
 850         OBD_CHECK_DEV_ACTIVE(obd);
 851         OBD_CHECK_DT_OP(obd, reconnect, 0);
 852         OBD_COUNTER_INCREMENT(obd, reconnect);
 853
 854         rc = OBP(obd, reconnect)(env, exp, obd, cluuid, d);
 855         /* check that only subset is granted */
 856         LASSERT(ergo(d != NULL,
 857                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 858         RETURN(rc);
 859 }
 860
 861 static inline int obd_disconnect(struct obd_export *exp)
 862 {
 863         int rc;
 864         ENTRY;
 865
 866         EXP_CHECK_DT_OP(exp, disconnect);
 867         EXP_COUNTER_INCREMENT(exp, disconnect);
 868
 869         rc = OBP(exp->exp_obd, disconnect)(exp);
 870         RETURN(rc);
 871 }
 872
 873 static inline int obd_fid_init(struct obd_export *exp)
 874 {
 875         int rc;
 876         ENTRY;
 877
 878         OBD_CHECK_DT_OP(exp->exp_obd, fid_init, 0);
 879         EXP_COUNTER_INCREMENT(exp, fid_init);
 880
 881         rc = OBP(exp->exp_obd, fid_init)(exp);
 882         RETURN(rc);
 883 }
 884
 885 static inline int obd_fid_fini(struct obd_export *exp)
 886 {
 887         int rc;
 888         ENTRY;
 889
 890         OBD_CHECK_DT_OP(exp->exp_obd, fid_fini, 0);
 891         EXP_COUNTER_INCREMENT(exp, fid_fini);
 892
 893         rc = OBP(exp->exp_obd, fid_fini)(exp);
 894         RETURN(rc);
 895 }
 896
 897 static inline int obd_fid_alloc(struct obd_export *exp,
 898                                 struct lu_fid *fid,
 899                                 struct md_op_data *op_data)
 900 {
 901         int rc;
 902         ENTRY;
 903
 904         EXP_CHECK_DT_OP(exp, fid_alloc);
 905         EXP_COUNTER_INCREMENT(exp, fid_alloc);
 906
 907         rc = OBP(exp->exp_obd, fid_alloc)(exp, fid, op_data);
 908         RETURN(rc);
 909 }
 910
 911 static inline int obd_fid_delete(struct obd_export *exp,
 912                                  const struct lu_fid *fid)
 913 {
 914         int rc;
 915         ENTRY;
 916
 917         EXP_CHECK_DT_OP(exp, fid_delete);
 918         EXP_COUNTER_INCREMENT(exp, fid_delete);
 919
 920         rc = OBP(exp->exp_obd, fid_delete)(exp, fid);
 921         RETURN(rc);
 922 }
 923
 924 static inline int obd_ping(struct obd_export *exp)
 925 {
 926         int rc;
 927         ENTRY;
 928
 929         OBD_CHECK_DT_OP(exp->exp_obd, ping, 0);
 930         EXP_COUNTER_INCREMENT(exp, ping);
 931
 932         rc = OBP(exp->exp_obd, ping)(exp);
 933         RETURN(rc);
 934 }
 935
 936 static inline int obd_init_export(struct obd_export *exp)
 937 {
 938         int rc = 0;
 939
 940         ENTRY;
 941         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 942             OBP((exp)->exp_obd, init_export))
 943                 rc = OBP(exp->exp_obd, init_export)(exp);
 944         RETURN(rc);
 945 }
 946
 947 static inline int obd_destroy_export(struct obd_export *exp)
 948 {
 949         ENTRY;
 950         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 951             OBP((exp)->exp_obd, destroy_export))
 952                 OBP(exp->exp_obd, destroy_export)(exp);
 953         RETURN(0);
 954 }
 955
 956 static inline int obd_extent_calc(struct obd_export *exp,
 957                                   struct lov_stripe_md *md,
 958                                   int cmd, obd_off *offset)
 959 {
 960         int rc;
 961         ENTRY;
 962         EXP_CHECK_DT_OP(exp, extent_calc);
 963         rc = OBP(exp->exp_obd, extent_calc)(exp, md, cmd, offset);
 964         RETURN(rc);
 965 }
 966
 967 static inline struct dentry *
 968 obd_lvfs_fid2dentry(struct obd_export *exp, __u64 id_ino, __u32 gen, __u64 gr)
 969 {
 970         LASSERT(exp->exp_obd);
 971
 972         return lvfs_fid2dentry(&exp->exp_obd->obd_lvfs_ctxt, id_ino, gen, gr,
 973                                exp->exp_obd);
 974 }
 975
 976 static inline int
 977 obd_lvfs_open_llog(struct obd_export *exp, __u64 id_ino, struct dentry *dentry)
 978 {
 979         LASSERT(exp->exp_obd);
 980         CERROR("FIXME what's the story here?  This needs to be an obd fn?\n");
 981 #if 0
 982         return lvfs_open_llog(&exp->exp_obd->obd_lvfs_ctxt, id_ino,
 983                               dentry, exp->exp_obd);
 984 #endif
 985         return 0;
 986 }
 987
 988 #ifndef time_before
 989 #define time_before(t1, t2) ((long)t2 - (long)t1 > 0)
 990 #endif
 991
 992 /* @max_age is the oldest time in jiffies that we accept using a cached data.
 993  * If the cache is older than @max_age we will get a new value from the
 994  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
 995 static inline int obd_statfs_async(struct obd_device *obd,
 996                                    struct obd_info *oinfo,
 997                                    __u64 max_age,
 998                                    struct ptlrpc_request_set *rqset)
 999 {
1000         int rc = 0;
1001         ENTRY;
1002
1003         if (obd == NULL)
1004                 RETURN(-EINVAL);
1005
1006         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1007         OBD_COUNTER_INCREMENT(obd, statfs);
1008
1009         CDEBUG(D_SUPER, "%s: osfs %p age "LPU64", max_age "LPU64"\n",
1010                obd->obd_name, &obd->obd_osfs, obd->obd_osfs_age, max_age);
1011         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1012                 rc = OBP(obd, statfs_async)(obd, oinfo, max_age, rqset);
1013         } else {
1014                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1015                        " objects "LPU64"/"LPU64"\n",
1016                        obd->obd_name, &obd->obd_osfs,
1017                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1018                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1019                 spin_lock(&obd->obd_osfs_lock);
1020                 memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
1021                 spin_unlock(&obd->obd_osfs_lock);
1022                 if (oinfo->oi_cb_up)
1023                         oinfo->oi_cb_up(oinfo, 0);
1024         }
1025         RETURN(rc);
1026 }
1027
1028 static inline int obd_statfs_rqset(struct obd_device *obd,
1029                                    struct obd_statfs *osfs, __u64 max_age,
1030                                    __u32 flags)
1031 {
1032         struct ptlrpc_request_set *set = NULL;
1033         struct obd_info oinfo = { { { 0 } } };
1034         int rc = 0;
1035         ENTRY;
1036
1037         set =  ptlrpc_prep_set();
1038         if (set == NULL)
1039                 RETURN(-ENOMEM);
1040
1041         oinfo.oi_osfs = osfs;
1042         oinfo.oi_flags = flags;
1043         rc = obd_statfs_async(obd, &oinfo, max_age, set);
1044         if (rc == 0)
1045                 rc = ptlrpc_set_wait(set);
1046         ptlrpc_set_destroy(set);
1047         RETURN(rc);
1048 }
1049
1050 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1051  * If the cache is older than @max_age we will get a new value from the
1052  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1053 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
1054                              __u64 max_age, __u32 flags)
1055 {
1056         int rc = 0;
1057         ENTRY;
1058
1059         if (obd == NULL)
1060                 RETURN(-EINVAL);
1061
1062         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1063         OBD_COUNTER_INCREMENT(obd, statfs);
1064
1065         CDEBUG(D_SUPER, "osfs "LPU64", max_age "LPU64"\n",
1066                obd->obd_osfs_age, max_age);
1067         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1068                 rc = OBP(obd, statfs)(obd, osfs, max_age, flags);
1069                 if (rc == 0) {
1070                         spin_lock(&obd->obd_osfs_lock);
1071                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
1072                         obd->obd_osfs_age = cfs_time_current_64();
1073                         spin_unlock(&obd->obd_osfs_lock);
1074                 }
1075         } else {
1076                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1077                        " objects "LPU64"/"LPU64"\n",
1078                        obd->obd_name, &obd->obd_osfs,
1079                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1080                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1081                 spin_lock(&obd->obd_osfs_lock);
1082                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
1083                 spin_unlock(&obd->obd_osfs_lock);
1084         }
1085         RETURN(rc);
1086 }
1087
1088 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
1089                            struct lov_stripe_md *ea, obd_size start,
1090                            obd_size end, void *capa)
1091 {
1092         int rc;
1093         ENTRY;
1094
1095         OBD_CHECK_DT_OP(exp->exp_obd, sync, -EOPNOTSUPP);
1096         EXP_COUNTER_INCREMENT(exp, sync);
1097
1098         rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end, capa);
1099         RETURN(rc);
1100 }
1101
1102 static inline int obd_punch_rqset(struct obd_export *exp,
1103                                   struct obd_info *oinfo,
1104                                   struct obd_trans_info *oti)
1105 {
1106         struct ptlrpc_request_set *set = NULL;
1107         int rc;
1108         ENTRY;
1109
1110         EXP_CHECK_DT_OP(exp, punch);
1111         EXP_COUNTER_INCREMENT(exp, punch);
1112
1113         set =  ptlrpc_prep_set();
1114         if (set == NULL)
1115                 RETURN(-ENOMEM);
1116
1117         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, set);
1118         if (rc == 0)
1119                 rc = ptlrpc_set_wait(set);
1120         ptlrpc_set_destroy(set);
1121         RETURN(rc);
1122 }
1123
1124 static inline int obd_punch(struct obd_export *exp, struct obd_info *oinfo,
1125                             struct obd_trans_info *oti,
1126                             struct ptlrpc_request_set *rqset)
1127 {
1128         int rc;
1129         ENTRY;
1130
1131         EXP_CHECK_DT_OP(exp, punch);
1132         EXP_COUNTER_INCREMENT(exp, punch);
1133
1134         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, rqset);
1135         RETURN(rc);
1136 }
1137
1138 static inline int obd_brw(int cmd, struct obd_export *exp,
1139                           struct obd_info *oinfo, obd_count oa_bufs,
1140                           struct brw_page *pg, struct obd_trans_info *oti)
1141 {
1142         int rc;
1143         ENTRY;
1144
1145         EXP_CHECK_DT_OP(exp, brw);
1146         EXP_COUNTER_INCREMENT(exp, brw);
1147
1148         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
1149                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
1150                        "or OBD_BRW_CHECK\n");
1151                 LBUG();
1152         }
1153
1154         rc = OBP(exp->exp_obd, brw)(cmd, exp, oinfo, oa_bufs, pg, oti);
1155         RETURN(rc);
1156 }
1157
1158 static inline int obd_brw_async(int cmd, struct obd_export *exp,
1159                                 struct obd_info *oinfo, obd_count oa_bufs,
1160                                 struct brw_page *pg, struct obd_trans_info *oti,
1161                                 struct ptlrpc_request_set *set)
1162 {
1163         int rc;
1164         ENTRY;
1165
1166         EXP_CHECK_DT_OP(exp, brw_async);
1167         EXP_COUNTER_INCREMENT(exp, brw_async);
1168
1169         if (!(cmd & OBD_BRW_RWMASK)) {
1170                 CERROR("obd_brw: cmd must be OBD_BRW_READ or OBD_BRW_WRITE\n");
1171                 LBUG();
1172         }
1173
1174         rc = OBP(exp->exp_obd, brw_async)(cmd, exp, oinfo, oa_bufs, pg,oti,set);
1175         RETURN(rc);
1176 }
1177
1178 static inline int obd_brw_rqset(int cmd, struct obd_export *exp,
1179                                 struct obdo *oa, struct lov_stripe_md *lsm,
1180                                 obd_count oa_bufs, struct brw_page *pg,
1181                                 struct obd_trans_info *oti,
1182                                 struct obd_capa *ocapa)
1183 {
1184         struct ptlrpc_request_set *set = NULL;
1185         struct obd_info oinfo = { { { 0 } } };
1186         int rc = 0;
1187         ENTRY;
1188
1189         set =  ptlrpc_prep_set();
1190         if (set == NULL)
1191                 RETURN(-ENOMEM);
1192
1193         oinfo.oi_oa = oa;
1194         oinfo.oi_md = lsm;
1195         oinfo.oi_capa = ocapa;
1196         rc = obd_brw_async(cmd, exp, &oinfo, oa_bufs, pg, oti, set);
1197         if (rc == 0) {
1198                 rc = ptlrpc_set_wait(set);
1199                 if (rc)
1200                         CERROR("error from callback: rc = %d\n", rc);
1201         } else {
1202                 CDEBUG(rc == -ENOSPC ? D_INODE : D_ERROR,
1203                        "error from obd_brw_async: rc = %d\n", rc);
1204         }
1205         ptlrpc_set_destroy(set);
1206         RETURN(rc);
1207 }
1208
1209 static inline  int obd_prep_async_page(struct obd_export *exp,
1210                                        struct lov_stripe_md *lsm,
1211                                        struct lov_oinfo *loi,
1212                                        cfs_page_t *page, obd_off offset,
1213                                        struct obd_async_page_ops *ops,
1214                                        void *data, void **res, int nocache,
1215                                        struct lustre_handle *lockh)
1216 {
1217         int ret;
1218         ENTRY;
1219
1220         EXP_CHECK_DT_OP(exp, prep_async_page);
1221         EXP_COUNTER_INCREMENT(exp, prep_async_page);
1222
1223         ret = OBP(exp->exp_obd, prep_async_page)(exp, lsm, loi, page, offset,
1224                                                  ops, data, res, nocache,
1225                                                  lockh);
1226         RETURN(ret);
1227 }
1228
1229 /**
1230  * Checks if requested extent lock is compatible with a lock under the page.
1231  *
1232  * Checks if the lock under \a page is compatible with a read or write lock
1233  * (specified by \a rw) for an extent [\a start , \a end].
1234  *
1235  * \param exp obd export (lov or osc)
1236  * \param lsm striping information for the file
1237  * \param res async_page placeholder
1238  * \param rw OBD_BRW_READ if requested for reading,
1239  *           OBD_BRW_WRITE if requested for writing
1240  * \param start start of the requested extent
1241  * \param end end of the requested extent
1242  * \param cookie transparent parameter for passing locking context
1243  *
1244  * \post result == 1, *cookie == context, appropriate lock is referenced or
1245  *
1246  * \retval 1 owned lock is reused for the request
1247  * \retval 0 no lock reused for the request
1248  * \retval -ENOTSUPP reget_short_lock is not exported at this layer
1249  *
1250  * \see obd_release_short_lock
1251  */
1252 static inline int obd_reget_short_lock(struct obd_export *exp,
1253                                        struct lov_stripe_md *lsm,
1254                                        void **res, int rw,
1255                                        obd_off start, obd_off end,
1256                                        void **cookie)
1257 {
1258         ENTRY;
1259
1260         EXP_CHECK_DT_OP(exp, reget_short_lock);
1261         EXP_COUNTER_INCREMENT(exp, reget_short_lock);
1262
1263         RETURN(OBP(exp->exp_obd, reget_short_lock)(exp, lsm, res, rw,
1264                                                    start, end, cookie));
1265 }
1266
1267
1268 /**
1269  * Releases a reference to a lock taken in a "fast" way.
1270  *
1271  * Releases a read or write (specified by \a rw) lock
1272  * referenced by \a cookie.
1273  *
1274  * \param exp obd export (lov or osc)
1275  * \param lsm striping information for the file
1276  * \param end end of the locked extent
1277  * \param rw OBD_BRW_READ if requested for reading,
1278  *           OBD_BRW_WRITE if requested for writing
1279  * \param cookie transparent parameter for passing locking context
1280  *
1281  * \post appropriate lock is dereferenced
1282  *
1283  * \see obd_reget_short_lock
1284  */
1285 static inline int obd_release_short_lock(struct obd_export *exp,
1286                                          struct lov_stripe_md *lsm, obd_off end,
1287                                          void *cookie, int rw)
1288 {
1289         ENTRY;
1290
1291         EXP_CHECK_DT_OP(exp, release_short_lock);
1292         EXP_COUNTER_INCREMENT(exp, release_short_lock);
1293
1294         RETURN(OBP(exp->exp_obd, release_short_lock)(exp, lsm, end,
1295                                                      cookie, rw));
1296 }
1297
1298 static inline int obd_queue_async_io(struct obd_export *exp,
1299                                      struct lov_stripe_md *lsm,
1300                                      struct lov_oinfo *loi, void *cookie,
1301                                      int cmd, obd_off off, int count,
1302                                      obd_flag brw_flags, obd_flag async_flags)
1303 {
1304         int rc;
1305         ENTRY;
1306
1307         EXP_CHECK_DT_OP(exp, queue_async_io);
1308         EXP_COUNTER_INCREMENT(exp, queue_async_io);
1309         LASSERT(cmd & OBD_BRW_RWMASK);
1310
1311         rc = OBP(exp->exp_obd, queue_async_io)(exp, lsm, loi, cookie, cmd, off,
1312                                                count, brw_flags, async_flags);
1313         RETURN(rc);
1314 }
1315
1316 static inline int obd_set_async_flags(struct obd_export *exp,
1317                                       struct lov_stripe_md *lsm,
1318                                       struct lov_oinfo *loi, void *cookie,
1319                                       obd_flag async_flags)
1320 {
1321         int rc;
1322         ENTRY;
1323
1324         EXP_CHECK_DT_OP(exp, set_async_flags);
1325         EXP_COUNTER_INCREMENT(exp, set_async_flags);
1326
1327         rc = OBP(exp->exp_obd, set_async_flags)(exp, lsm, loi, cookie,
1328                                                 async_flags);
1329         RETURN(rc);
1330 }
1331
1332 static inline int obd_queue_group_io(struct obd_export *exp,
1333                                      struct lov_stripe_md *lsm,
1334                                      struct lov_oinfo *loi,
1335                                      struct obd_io_group *oig,
1336                                      void *cookie, int cmd, obd_off off,
1337                                      int count, obd_flag brw_flags,
1338                                      obd_flag async_flags)
1339 {
1340         int rc;
1341         ENTRY;
1342
1343         EXP_CHECK_DT_OP(exp, queue_group_io);
1344         EXP_COUNTER_INCREMENT(exp, queue_group_io);
1345         LASSERT(cmd & OBD_BRW_RWMASK);
1346
1347         rc = OBP(exp->exp_obd, queue_group_io)(exp, lsm, loi, oig, cookie,
1348                                                cmd, off, count, brw_flags,
1349                                                async_flags);
1350         RETURN(rc);
1351 }
1352
1353 static inline int obd_trigger_group_io(struct obd_export *exp,
1354                                        struct lov_stripe_md *lsm,
1355                                        struct lov_oinfo *loi,
1356                                        struct obd_io_group *oig)
1357 {
1358         int rc;
1359         ENTRY;
1360
1361         EXP_CHECK_DT_OP(exp, trigger_group_io);
1362         EXP_COUNTER_INCREMENT(exp, trigger_group_io);
1363
1364         rc = OBP(exp->exp_obd, trigger_group_io)(exp, lsm, loi, oig);
1365         RETURN(rc);
1366 }
1367
1368 static inline int obd_teardown_async_page(struct obd_export *exp,
1369                                           struct lov_stripe_md *lsm,
1370                                           struct lov_oinfo *loi, void *cookie)
1371 {
1372         int rc;
1373         ENTRY;
1374
1375         EXP_CHECK_DT_OP(exp, teardown_async_page);
1376         EXP_COUNTER_INCREMENT(exp, teardown_async_page);
1377
1378         rc = OBP(exp->exp_obd, teardown_async_page)(exp, lsm, loi, cookie);
1379         RETURN(rc);
1380 }
1381
1382 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
1383                              int objcount, struct obd_ioobj *obj,
1384                              int niocount, struct niobuf_remote *remote,
1385                              struct niobuf_local *local,
1386                              struct obd_trans_info *oti,
1387                              struct lustre_capa *capa)
1388 {
1389         int rc;
1390         ENTRY;
1391
1392         EXP_CHECK_DT_OP(exp, preprw);
1393         EXP_COUNTER_INCREMENT(exp, preprw);
1394
1395         rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, niocount,
1396                                        remote, local, oti, capa);
1397         RETURN(rc);
1398 }
1399
1400 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
1401                                int objcount, struct obd_ioobj *obj,
1402                                int niocount, struct niobuf_local *local,
1403                                struct obd_trans_info *oti, int rc)
1404 {
1405         ENTRY;
1406
1407         EXP_CHECK_DT_OP(exp, commitrw);
1408         EXP_COUNTER_INCREMENT(exp, commitrw);
1409
1410         rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj, niocount,
1411                                          local, oti, rc);
1412         RETURN(rc);
1413 }
1414
1415 static inline int obd_merge_lvb(struct obd_export *exp,
1416                                 struct lov_stripe_md *lsm,
1417                                 struct ost_lvb *lvb, int kms_only)
1418 {
1419         int rc;
1420         ENTRY;
1421
1422         EXP_CHECK_DT_OP(exp, merge_lvb);
1423         EXP_COUNTER_INCREMENT(exp, merge_lvb);
1424
1425         rc = OBP(exp->exp_obd, merge_lvb)(exp, lsm, lvb, kms_only);
1426         RETURN(rc);
1427 }
1428
1429 static inline int obd_adjust_kms(struct obd_export *exp,
1430                                  struct lov_stripe_md *lsm, obd_off size,
1431                                  int shrink)
1432 {
1433         int rc;
1434         ENTRY;
1435
1436         EXP_CHECK_DT_OP(exp, adjust_kms);
1437         EXP_COUNTER_INCREMENT(exp, adjust_kms);
1438
1439         rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
1440         RETURN(rc);
1441 }
1442
1443 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1444                                 int len, void *karg, void *uarg)
1445 {
1446         int rc;
1447         ENTRY;
1448
1449         EXP_CHECK_DT_OP(exp, iocontrol);
1450         EXP_COUNTER_INCREMENT(exp, iocontrol);
1451
1452         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1453         RETURN(rc);
1454 }
1455
1456 static inline int obd_enqueue_rqset(struct obd_export *exp,
1457                                     struct obd_info *oinfo,
1458                                     struct ldlm_enqueue_info *einfo)
1459 {
1460         struct ptlrpc_request_set *set = NULL;
1461         int rc;
1462         ENTRY;
1463
1464         EXP_CHECK_DT_OP(exp, enqueue);
1465         EXP_COUNTER_INCREMENT(exp, enqueue);
1466
1467         set =  ptlrpc_prep_set();
1468         if (set == NULL)
1469                 RETURN(-ENOMEM);
1470
1471         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1472         if (rc == 0)
1473                 rc = ptlrpc_set_wait(set);
1474         ptlrpc_set_destroy(set);
1475         RETURN(rc);
1476 }
1477
1478 static inline int obd_enqueue(struct obd_export *exp,
1479                               struct obd_info *oinfo,
1480                               struct ldlm_enqueue_info *einfo,
1481                               struct ptlrpc_request_set *set)
1482 {
1483         int rc;
1484         ENTRY;
1485
1486         EXP_CHECK_DT_OP(exp, enqueue);
1487         EXP_COUNTER_INCREMENT(exp, enqueue);
1488
1489         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1490         RETURN(rc);
1491 }
1492
1493 static inline int obd_match(struct obd_export *exp, struct lov_stripe_md *ea,
1494                             __u32 type, ldlm_policy_data_t *policy, __u32 mode,
1495                             int *flags, void *data, struct lustre_handle *lockh)
1496 {
1497         int rc;
1498         ENTRY;
1499
1500         EXP_CHECK_DT_OP(exp, match);
1501         EXP_COUNTER_INCREMENT(exp, match);
1502
1503         rc = OBP(exp->exp_obd, match)(exp, ea, type, policy, mode, flags, data,
1504                                       lockh);
1505         RETURN(rc);
1506 }
1507
1508 static inline int obd_change_cbdata(struct obd_export *exp,
1509                                     struct lov_stripe_md *lsm,
1510                                     ldlm_iterator_t it, void *data)
1511 {
1512         int rc;
1513         ENTRY;
1514
1515         EXP_CHECK_DT_OP(exp, change_cbdata);
1516         EXP_COUNTER_INCREMENT(exp, change_cbdata);
1517
1518         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1519         RETURN(rc);
1520 }
1521
1522 static inline int obd_cancel(struct obd_export *exp,
1523                              struct lov_stripe_md *ea, __u32 mode,
1524                              struct lustre_handle *lockh)
1525 {
1526         int rc;
1527         ENTRY;
1528
1529         EXP_CHECK_DT_OP(exp, cancel);
1530         EXP_COUNTER_INCREMENT(exp, cancel);
1531
1532         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1533         RETURN(rc);
1534 }
1535
1536 static inline int obd_cancel_unused(struct obd_export *exp,
1537                                     struct lov_stripe_md *ea,
1538                                     int flags, void *opaque)
1539 {
1540         int rc;
1541         ENTRY;
1542
1543         EXP_CHECK_DT_OP(exp, cancel_unused);
1544         EXP_COUNTER_INCREMENT(exp, cancel_unused);
1545
1546         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1547         RETURN(rc);
1548 }
1549
1550 static inline int obd_join_lru(struct obd_export *exp,
1551                                struct lov_stripe_md *ea, int join)
1552 {
1553         int rc;
1554         ENTRY;
1555
1556         EXP_CHECK_DT_OP(exp, join_lru);
1557         EXP_COUNTER_INCREMENT(exp, join_lru);
1558
1559         rc = OBP(exp->exp_obd, join_lru)(exp, ea, join);
1560         RETURN(rc);
1561 }
1562
1563 static inline int obd_pin(struct obd_export *exp, const struct lu_fid *fid,
1564                           struct obd_capa *oc, struct obd_client_handle *handle,
1565                           int flag)
1566 {
1567         int rc;
1568         ENTRY;
1569
1570         EXP_CHECK_DT_OP(exp, pin);
1571         EXP_COUNTER_INCREMENT(exp, pin);
1572
1573         rc = OBP(exp->exp_obd, pin)(exp, fid, oc, handle, flag);
1574         RETURN(rc);
1575 }
1576
1577 static inline int obd_unpin(struct obd_export *exp,
1578                             struct obd_client_handle *handle, int flag)
1579 {
1580         int rc;
1581         ENTRY;
1582
1583         EXP_CHECK_DT_OP(exp, unpin);
1584         EXP_COUNTER_INCREMENT(exp, unpin);
1585
1586         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1587         RETURN(rc);
1588 }
1589
1590
1591 static inline void obd_import_event(struct obd_device *obd,
1592                                     struct obd_import *imp,
1593                                     enum obd_import_event event)
1594 {
1595         ENTRY;
1596         if (!obd) {
1597                 CERROR("NULL device\n");
1598                 EXIT;
1599                 return;
1600         }
1601         if (obd->obd_set_up && OBP(obd, import_event)) {
1602                 OBD_COUNTER_INCREMENT(obd, import_event);
1603                 OBP(obd, import_event)(obd, imp, event);
1604         }
1605         EXIT;
1606 }
1607
1608 static inline int obd_llog_connect(struct obd_export *exp,
1609                                    struct llogd_conn_body *body)
1610 {
1611         int rc;
1612         ENTRY;
1613
1614         OBD_CHECK_DT_OP(exp->exp_obd, llog_connect, 0);
1615         EXP_COUNTER_INCREMENT(exp, llog_connect);
1616
1617         rc = OBP(exp->exp_obd, llog_connect)(exp, body);
1618         RETURN(rc);
1619 }
1620
1621
1622 static inline int obd_notify(struct obd_device *obd,
1623                              struct obd_device *watched,
1624                              enum obd_notify_event ev,
1625                              void *data)
1626 {
1627         int rc;
1628         ENTRY;
1629         OBD_CHECK_DEV(obd);
1630
1631         /* the check for async_recov is a complete hack - I'm hereby
1632            overloading the meaning to also mean "this was called from
1633            mds_postsetup".  I know that my mds is able to handle notifies
1634            by this point, and it needs to get them to execute mds_postrecov. */
1635         if (!obd->obd_set_up && !obd->obd_async_recov) {
1636                 CDEBUG(D_HA, "obd %s not set up\n", obd->obd_name);
1637                 RETURN(-EINVAL);
1638         }
1639
1640         if (!OBP(obd, notify)) {
1641                 CERROR("obd %s has no notify handler\n", obd->obd_name);
1642                 RETURN(-ENOSYS);
1643         }
1644
1645         OBD_COUNTER_INCREMENT(obd, notify);
1646         rc = OBP(obd, notify)(obd, watched, ev, data);
1647         RETURN(rc);
1648 }
1649
1650 static inline int obd_notify_observer(struct obd_device *observer,
1651                                       struct obd_device *observed,
1652                                       enum obd_notify_event ev,
1653                                       void *data)
1654 {
1655         int rc1;
1656         int rc2;
1657
1658         struct obd_notify_upcall *onu;
1659
1660         if (observer->obd_observer)
1661                 rc1 = obd_notify(observer->obd_observer, observed, ev, data);
1662         else
1663                 rc1 = 0;
1664         /*
1665          * Also, call non-obd listener, if any
1666          */
1667         onu = &observer->obd_upcall;
1668         if (onu->onu_upcall != NULL)
1669                 rc2 = onu->onu_upcall(observer, observed, ev, onu->onu_owner);
1670         else
1671                 rc2 = 0;
1672
1673         return rc1 ? rc1 : rc2;
1674 }
1675
1676 static inline int obd_quotacheck(struct obd_export *exp,
1677                                  struct obd_quotactl *oqctl)
1678 {
1679         int rc;
1680         ENTRY;
1681
1682         EXP_CHECK_DT_OP(exp, quotacheck);
1683         EXP_COUNTER_INCREMENT(exp, quotacheck);
1684
1685         rc = OBP(exp->exp_obd, quotacheck)(exp, oqctl);
1686         RETURN(rc);
1687 }
1688
1689 static inline int obd_quotactl(struct obd_export *exp,
1690                                struct obd_quotactl *oqctl)
1691 {
1692         int rc;
1693         ENTRY;
1694
1695         EXP_CHECK_DT_OP(exp, quotactl);
1696         EXP_COUNTER_INCREMENT(exp, quotactl);
1697
1698         rc = OBP(exp->exp_obd, quotactl)(exp, oqctl);
1699         RETURN(rc);
1700 }
1701
1702 static inline int obd_health_check(struct obd_device *obd)
1703 {
1704         /* returns: 0 on healthy
1705          *         >0 on unhealthy + reason code/flag
1706          *            however the only suppored reason == 1 right now
1707          *            We'll need to define some better reasons
1708          *            or flags in the future.
1709          *         <0 on error
1710          */
1711         int rc;
1712         ENTRY;
1713
1714         /* don't use EXP_CHECK_DT_OP, because NULL method is normal here */
1715         if (obd == NULL || !OBT(obd)) {
1716                 CERROR("cleaned up obd\n");
1717                 RETURN(-EOPNOTSUPP);
1718         }
1719         if (!obd->obd_set_up || obd->obd_stopping)
1720                 RETURN(0);
1721         if (!OBP(obd, health_check))
1722                 RETURN(0);
1723
1724         rc = OBP(obd, health_check)(obd);
1725         RETURN(rc);
1726 }
1727
1728 static inline int obd_register_observer(struct obd_device *obd,
1729                                         struct obd_device *observer)
1730 {
1731         ENTRY;
1732         OBD_CHECK_DEV(obd);
1733         if (obd->obd_observer && observer)
1734                 RETURN(-EALREADY);
1735         obd->obd_observer = observer;
1736         RETURN(0);
1737 }
1738
1739 static inline int obd_register_page_removal_cb(struct obd_export *exp,
1740                                                obd_page_removal_cb_t cb,
1741                                                obd_pin_extent_cb pin_cb)
1742 {
1743         int rc;
1744         ENTRY;
1745
1746         OBD_CHECK_DT_OP(exp->exp_obd, register_page_removal_cb, 0);
1747         OBD_COUNTER_INCREMENT(exp->exp_obd, register_page_removal_cb);
1748
1749         rc = OBP(exp->exp_obd, register_page_removal_cb)(exp, cb, pin_cb);
1750         RETURN(rc);
1751 }
1752
1753 static inline int obd_unregister_page_removal_cb(struct obd_export *exp,
1754                                                  obd_page_removal_cb_t cb)
1755 {
1756         int rc;
1757         ENTRY;
1758
1759         OBD_CHECK_DT_OP(exp->exp_obd, unregister_page_removal_cb, 0);
1760         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_page_removal_cb);
1761
1762         rc = OBP(exp->exp_obd, unregister_page_removal_cb)(exp, cb);
1763         RETURN(rc);
1764 }
1765
1766 static inline int obd_register_lock_cancel_cb(struct obd_export *exp,
1767                                               obd_lock_cancel_cb cb)
1768 {
1769         int rc;
1770         ENTRY;
1771
1772         OBD_CHECK_DT_OP(exp->exp_obd, register_lock_cancel_cb, 0);
1773         OBD_COUNTER_INCREMENT(exp->exp_obd, register_lock_cancel_cb);
1774
1775         rc = OBP(exp->exp_obd, register_lock_cancel_cb)(exp, cb);
1776         RETURN(rc);
1777 }
1778
1779 static inline int obd_unregister_lock_cancel_cb(struct obd_export *exp,
1780                                                  obd_lock_cancel_cb cb)
1781 {
1782         int rc;
1783         ENTRY;
1784
1785         OBD_CHECK_DT_OP(exp->exp_obd, unregister_lock_cancel_cb, 0);
1786         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_lock_cancel_cb);
1787
1788         rc = OBP(exp->exp_obd, unregister_lock_cancel_cb)(exp, cb);
1789         RETURN(rc);
1790 }
1791
1792 /* metadata helpers */
1793 static inline int md_getstatus(struct obd_export *exp,
1794                                struct lu_fid *fid, struct obd_capa **pc)
1795 {
1796         int rc;
1797         ENTRY;
1798
1799         EXP_CHECK_MD_OP(exp, getstatus);
1800         EXP_MD_COUNTER_INCREMENT(exp, getstatus);
1801         rc = MDP(exp->exp_obd, getstatus)(exp, fid, pc);
1802         RETURN(rc);
1803 }
1804
1805 static inline int md_getattr(struct obd_export *exp, const struct lu_fid *fid,
1806                              struct obd_capa *oc, obd_valid valid, int ea_size,
1807                              struct ptlrpc_request **request)
1808 {
1809         int rc;
1810         ENTRY;
1811         EXP_CHECK_MD_OP(exp, getattr);
1812         EXP_MD_COUNTER_INCREMENT(exp, getattr);
1813         rc = MDP(exp->exp_obd, getattr)(exp, fid, oc, valid,
1814                                         ea_size, request);
1815         RETURN(rc);
1816 }
1817
1818 static inline int md_change_cbdata(struct obd_export *exp,
1819                                    const struct lu_fid *fid,
1820                                    ldlm_iterator_t it, void *data)
1821 {
1822         int rc;
1823         ENTRY;
1824         EXP_CHECK_MD_OP(exp, change_cbdata);
1825         EXP_MD_COUNTER_INCREMENT(exp, change_cbdata);
1826         rc = MDP(exp->exp_obd, change_cbdata)(exp, fid, it, data);
1827         RETURN(rc);
1828 }
1829
1830 static inline int md_close(struct obd_export *exp, struct md_op_data *op_data,
1831                            struct md_open_data *mod,
1832                            struct ptlrpc_request **request)
1833 {
1834         int rc;
1835         ENTRY;
1836         EXP_CHECK_MD_OP(exp, close);
1837         EXP_MD_COUNTER_INCREMENT(exp, close);
1838         rc = MDP(exp->exp_obd, close)(exp, op_data, mod, request);
1839         RETURN(rc);
1840 }
1841
1842 static inline int md_create(struct obd_export *exp, struct md_op_data *op_data,
1843                             const void *data, int datalen, int mode, __u32 uid,
1844                             __u32 gid, __u32 cap_effective, __u64 rdev,
1845                             struct ptlrpc_request **request)
1846 {
1847         int rc;
1848         ENTRY;
1849         EXP_CHECK_MD_OP(exp, create);
1850         EXP_MD_COUNTER_INCREMENT(exp, create);
1851         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1852                                        uid, gid, cap_effective, rdev, request);
1853         RETURN(rc);
1854 }
1855
1856 static inline int md_done_writing(struct obd_export *exp,
1857                                   struct md_op_data *op_data,
1858                                   struct md_open_data *mod)
1859 {
1860         int rc;
1861         ENTRY;
1862         EXP_CHECK_MD_OP(exp, done_writing);
1863         EXP_MD_COUNTER_INCREMENT(exp, done_writing);
1864         rc = MDP(exp->exp_obd, done_writing)(exp, op_data, mod);
1865         RETURN(rc);
1866 }
1867
1868 static inline int md_enqueue(struct obd_export *exp,
1869                              struct ldlm_enqueue_info *einfo,
1870                              struct lookup_intent *it,
1871                              struct md_op_data *op_data,
1872                              struct lustre_handle *lockh,
1873                              void *lmm, int lmmsize,
1874                              int extra_lock_flags)
1875 {
1876         int rc;
1877         ENTRY;
1878         EXP_CHECK_MD_OP(exp, enqueue);
1879         EXP_MD_COUNTER_INCREMENT(exp, enqueue);
1880         rc = MDP(exp->exp_obd, enqueue)(exp, einfo, it, op_data, lockh,
1881                                         lmm, lmmsize, extra_lock_flags);
1882         RETURN(rc);
1883 }
1884
1885 static inline int md_getattr_name(struct obd_export *exp,
1886                                   const struct lu_fid *fid, struct obd_capa *oc,
1887                                   const char *name, int namelen,
1888                                   obd_valid valid, int ea_size, __u32 suppgid,
1889                                   struct ptlrpc_request **request)
1890 {
1891         int rc;
1892         ENTRY;
1893         EXP_CHECK_MD_OP(exp, getattr_name);
1894         EXP_MD_COUNTER_INCREMENT(exp, getattr_name);
1895         rc = MDP(exp->exp_obd, getattr_name)(exp, fid, oc, name, namelen,
1896                                              valid, ea_size, suppgid, request);
1897         RETURN(rc);
1898 }
1899
1900 static inline int md_intent_lock(struct obd_export *exp,
1901                                  struct md_op_data *op_data, void *lmm,
1902                                  int lmmsize, struct lookup_intent *it,
1903                                  int flags, struct ptlrpc_request **reqp,
1904                                  ldlm_blocking_callback cb_blocking,
1905                                  int extra_lock_flags)
1906 {
1907         int rc;
1908         ENTRY;
1909         EXP_CHECK_MD_OP(exp, intent_lock);
1910         EXP_MD_COUNTER_INCREMENT(exp, intent_lock);
1911         rc = MDP(exp->exp_obd, intent_lock)(exp, op_data, lmm, lmmsize,
1912                                             it, flags, reqp, cb_blocking,
1913                                             extra_lock_flags);
1914         RETURN(rc);
1915 }
1916
1917 static inline int md_link(struct obd_export *exp, struct md_op_data *op_data,
1918                           struct ptlrpc_request **request)
1919 {
1920         int rc;
1921         ENTRY;
1922         EXP_CHECK_MD_OP(exp, link);
1923         EXP_MD_COUNTER_INCREMENT(exp, link);
1924         rc = MDP(exp->exp_obd, link)(exp, op_data, request);
1925         RETURN(rc);
1926 }
1927
1928 static inline int md_rename(struct obd_export *exp, struct md_op_data *op_data,
1929                             const char *old, int oldlen, const char *new,
1930                             int newlen, struct ptlrpc_request **request)
1931 {
1932         int rc;
1933         ENTRY;
1934         EXP_CHECK_MD_OP(exp, rename);
1935         EXP_MD_COUNTER_INCREMENT(exp, rename);
1936         rc = MDP(exp->exp_obd, rename)(exp, op_data, old, oldlen, new,
1937                                        newlen, request);
1938         RETURN(rc);
1939 }
1940
1941 static inline int md_is_subdir(struct obd_export *exp,
1942                                const struct lu_fid *pfid,
1943                                const struct lu_fid *cfid,
1944                                struct ptlrpc_request **request)
1945 {
1946         int rc;
1947         ENTRY;
1948         EXP_CHECK_MD_OP(exp, is_subdir);
1949         EXP_MD_COUNTER_INCREMENT(exp, is_subdir);
1950         rc = MDP(exp->exp_obd, is_subdir)(exp, pfid, cfid, request);
1951         RETURN(rc);
1952 }
1953
1954 static inline int md_setattr(struct obd_export *exp, struct md_op_data *op_data,
1955                              void *ea, int ealen, void *ea2, int ea2len,
1956                              struct ptlrpc_request **request,
1957                              struct md_open_data **mod)
1958 {
1959         int rc;
1960         ENTRY;
1961         EXP_CHECK_MD_OP(exp, setattr);
1962         EXP_MD_COUNTER_INCREMENT(exp, setattr);
1963         rc = MDP(exp->exp_obd, setattr)(exp, op_data, ea, ealen,
1964                                         ea2, ea2len, request, mod);
1965         RETURN(rc);
1966 }
1967
1968 static inline int md_sync(struct obd_export *exp, const struct lu_fid *fid,
1969                           struct obd_capa *oc, struct ptlrpc_request **request)
1970 {
1971         int rc;
1972         ENTRY;
1973         EXP_CHECK_MD_OP(exp, sync);
1974         EXP_MD_COUNTER_INCREMENT(exp, sync);
1975         rc = MDP(exp->exp_obd, sync)(exp, fid, oc, request);
1976         RETURN(rc);
1977 }
1978
1979 static inline int md_readpage(struct obd_export *exp, const struct lu_fid *fid,
1980                               struct obd_capa *oc, __u64 offset,
1981                               struct page *page,
1982                               struct ptlrpc_request **request)
1983 {
1984         int rc;
1985         ENTRY;
1986         EXP_CHECK_MD_OP(exp, readpage);
1987         EXP_MD_COUNTER_INCREMENT(exp, readpage);
1988         rc = MDP(exp->exp_obd, readpage)(exp, fid, oc, offset, page, request);
1989         RETURN(rc);
1990 }
1991
1992 static inline int md_unlink(struct obd_export *exp, struct md_op_data *op_data,
1993                             struct ptlrpc_request **request)
1994 {
1995         int rc;
1996         ENTRY;
1997         EXP_CHECK_MD_OP(exp, unlink);
1998         EXP_MD_COUNTER_INCREMENT(exp, unlink);
1999         rc = MDP(exp->exp_obd, unlink)(exp, op_data, request);
2000         RETURN(rc);
2001 }
2002
2003 static inline int md_get_lustre_md(struct obd_export *exp,
2004                                    struct ptlrpc_request *req,
2005                                    struct obd_export *dt_exp,
2006                                    struct obd_export *md_exp,
2007                                    struct lustre_md *md)
2008 {
2009         ENTRY;
2010         EXP_CHECK_MD_OP(exp, get_lustre_md);
2011         EXP_MD_COUNTER_INCREMENT(exp, get_lustre_md);
2012         RETURN(MDP(exp->exp_obd, get_lustre_md)(exp, req, dt_exp, md_exp, md));
2013 }
2014
2015 static inline int md_free_lustre_md(struct obd_export *exp,
2016                                     struct lustre_md *md)
2017 {
2018         ENTRY;
2019         EXP_CHECK_MD_OP(exp, free_lustre_md);
2020         EXP_MD_COUNTER_INCREMENT(exp, free_lustre_md);
2021         RETURN(MDP(exp->exp_obd, free_lustre_md)(exp, md));
2022 }
2023
2024 static inline int md_setxattr(struct obd_export *exp,
2025                               const struct lu_fid *fid, struct obd_capa *oc,
2026                               obd_valid valid, const char *name,
2027                               const char *input, int input_size,
2028                               int output_size, int flags, __u32 suppgid,
2029                               struct ptlrpc_request **request)
2030 {
2031         ENTRY;
2032         EXP_CHECK_MD_OP(exp, setxattr);
2033         EXP_MD_COUNTER_INCREMENT(exp, setxattr);
2034         RETURN(MDP(exp->exp_obd, setxattr)(exp, fid, oc, valid, name, input,
2035                                            input_size, output_size, flags,
2036                                            suppgid, request));
2037 }
2038
2039 static inline int md_getxattr(struct obd_export *exp,
2040                               const struct lu_fid *fid, struct obd_capa *oc,
2041                               obd_valid valid, const char *name,
2042                               const char *input, int input_size,
2043                               int output_size, int flags,
2044                               struct ptlrpc_request **request)
2045 {
2046         ENTRY;
2047         EXP_CHECK_MD_OP(exp, getxattr);
2048         EXP_MD_COUNTER_INCREMENT(exp, getxattr);
2049         RETURN(MDP(exp->exp_obd, getxattr)(exp, fid, oc, valid, name, input,
2050                                            input_size, output_size, flags,
2051                                            request));
2052 }
2053
2054 static inline int md_set_open_replay_data(struct obd_export *exp,
2055                                           struct obd_client_handle *och,
2056                                           struct ptlrpc_request *open_req)
2057 {
2058         ENTRY;
2059         EXP_CHECK_MD_OP(exp, set_open_replay_data);
2060         EXP_MD_COUNTER_INCREMENT(exp, set_open_replay_data);
2061         RETURN(MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req));
2062 }
2063
2064 static inline int md_clear_open_replay_data(struct obd_export *exp,
2065                                             struct obd_client_handle *och)
2066 {
2067         ENTRY;
2068         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
2069         EXP_MD_COUNTER_INCREMENT(exp, clear_open_replay_data);
2070         RETURN(MDP(exp->exp_obd, clear_open_replay_data)(exp, och));
2071 }
2072
2073 static inline int md_set_lock_data(struct obd_export *exp,
2074                                    __u64 *lockh, void *data)
2075 {
2076         ENTRY;
2077         EXP_CHECK_MD_OP(exp, set_lock_data);
2078         EXP_MD_COUNTER_INCREMENT(exp, set_lock_data);
2079         RETURN(MDP(exp->exp_obd, set_lock_data)(exp, lockh, data));
2080 }
2081
2082 static inline int md_cancel_unused(struct obd_export *exp,
2083                                    const struct lu_fid *fid,
2084                                    ldlm_policy_data_t *policy,
2085                                    ldlm_mode_t mode, int flags, void *opaque)
2086 {
2087         int rc;
2088         ENTRY;
2089
2090         EXP_CHECK_MD_OP(exp, cancel_unused);
2091         EXP_MD_COUNTER_INCREMENT(exp, cancel_unused);
2092
2093         rc = MDP(exp->exp_obd, cancel_unused)(exp, fid, policy, mode,
2094                                               flags, opaque);
2095         RETURN(rc);
2096 }
2097
2098 static inline ldlm_mode_t md_lock_match(struct obd_export *exp, int flags,
2099                                         const struct lu_fid *fid,
2100                                         ldlm_type_t type,
2101                                         ldlm_policy_data_t *policy,
2102                                         ldlm_mode_t mode,
2103                                         struct lustre_handle *lockh)
2104 {
2105         ENTRY;
2106         EXP_CHECK_MD_OP(exp, lock_match);
2107         EXP_MD_COUNTER_INCREMENT(exp, lock_match);
2108         RETURN(MDP(exp->exp_obd, lock_match)(exp, flags, fid, type,
2109                                              policy, mode, lockh));
2110 }
2111
2112 static inline int md_init_ea_size(struct obd_export *exp, int easize,
2113                                   int def_asize, int cookiesize)
2114 {
2115         ENTRY;
2116         EXP_CHECK_MD_OP(exp, init_ea_size);
2117         EXP_MD_COUNTER_INCREMENT(exp, init_ea_size);
2118         RETURN(MDP(exp->exp_obd, init_ea_size)(exp, easize, def_asize,
2119                                                cookiesize));
2120 }
2121
2122 static inline int md_get_remote_perm(struct obd_export *exp,
2123                                      const struct lu_fid *fid,
2124                                      struct obd_capa *oc, __u32 suppgid,
2125                                      struct ptlrpc_request **request)
2126 {
2127         ENTRY;
2128         EXP_CHECK_MD_OP(exp, get_remote_perm);
2129         EXP_MD_COUNTER_INCREMENT(exp, get_remote_perm);
2130         RETURN(MDP(exp->exp_obd, get_remote_perm)(exp, fid, oc, suppgid,
2131                                                   request));
2132 }
2133
2134 static inline int md_renew_capa(struct obd_export *exp, struct obd_capa *ocapa,
2135                                 renew_capa_cb_t cb)
2136 {
2137         int rc;
2138         ENTRY;
2139         EXP_CHECK_MD_OP(exp, renew_capa);
2140         EXP_MD_COUNTER_INCREMENT(exp, renew_capa);
2141         rc = MDP(exp->exp_obd, renew_capa)(exp, ocapa, cb);
2142         RETURN(rc);
2143 }
2144
2145 static inline int md_intent_getattr_async(struct obd_export *exp,
2146                                           struct md_enqueue_info *minfo,
2147                                           struct ldlm_enqueue_info *einfo)
2148 {
2149         int rc;
2150         ENTRY;
2151         EXP_CHECK_MD_OP(exp, intent_getattr_async);
2152         EXP_MD_COUNTER_INCREMENT(exp, intent_getattr_async);
2153         rc = MDP(exp->exp_obd, intent_getattr_async)(exp, minfo, einfo);
2154         RETURN(rc);
2155 }
2156
2157 static inline int md_revalidate_lock(struct obd_export *exp,
2158                                      struct lookup_intent *it,
2159                                      struct lu_fid *fid)
2160 {
2161         int rc;
2162         ENTRY;
2163         EXP_CHECK_MD_OP(exp, revalidate_lock);
2164         EXP_MD_COUNTER_INCREMENT(exp, revalidate_lock);
2165         rc = MDP(exp->exp_obd, revalidate_lock)(exp, it, fid);
2166         RETURN(rc);
2167 }
2168
2169
2170 /* OBD Metadata Support */
2171
2172 extern int obd_init_caches(void);
2173 extern void obd_cleanup_caches(void);
2174
2175 /* support routines */
2176 extern cfs_mem_cache_t *obdo_cachep;
2177
2178 #define OBDO_ALLOC(ptr)                                                       \
2179 do {                                                                          \
2180         OBD_SLAB_ALLOC_PTR((ptr), obdo_cachep);                               \
2181 } while(0)
2182
2183 #define OBDO_FREE(ptr)                                                        \
2184 do {                                                                          \
2185         OBD_SLAB_FREE_PTR((ptr), obdo_cachep);                                \
2186 } while(0)
2187
2188
2189 static inline void obdo2fid(struct obdo *oa, struct lu_fid *fid)
2190 {
2191         /* something here */
2192 }
2193
2194 static inline void fid2obdo(struct lu_fid *fid, struct obdo *oa)
2195 {
2196         /* something here */
2197 }
2198
2199 /* I'm as embarrassed about this as you are.
2200  *
2201  * <shaver> // XXX do not look into _superhack with remaining eye
2202  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
2203 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
2204
2205 /* sysctl.c */
2206 extern void obd_sysctl_init (void);
2207 extern void obd_sysctl_clean (void);
2208
2209 /* uuid.c  */
2210 typedef __u8 class_uuid_t[16];
2211 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
2212
2213 /* lustre_peer.c    */
2214 int lustre_uuid_to_peer(const char *uuid, lnet_nid_t *peer_nid, int index);
2215 int class_add_uuid(const char *uuid, __u64 nid);
2216 int class_del_uuid (const char *uuid);
2217 void class_init_uuidlist(void);
2218 void class_exit_uuidlist(void);
2219
2220 /* mea.c */
2221 int mea_name2idx(struct lmv_stripe_md *mea, const char *name, int namelen);
2222 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
2223
2224 /* prng.c */
2225 void ll_generate_random_uuid(class_uuid_t uuid_out);
2226
2227 #endif /* __LINUX_OBD_CLASS_H */