lustre/include/obd_class.h

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see
  20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright  2008 Sun Microsystems, Inc. All rights reserved
  30  * Use is subject to license terms.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  */
  36 #ifndef __CLASS_OBD_H
  37 #define __CLASS_OBD_H
  38
  39 #ifndef __KERNEL__
  40 # include <liblustre.h>
  41 #endif
  42
  43 #include <obd_support.h>
  44 #include <lustre_import.h>
  45 #include <lustre_net.h>
  46 #include <obd.h>
  47 #include <lustre_lib.h>
  48 #include <lustre/lustre_idl.h>
  49 #include <lprocfs_status.h>
  50
  51 #if defined(__linux__)
  52 #include <linux/obd_class.h>
  53 #elif defined(__APPLE__)
  54 #include <darwin/obd_class.h>
  55 #elif defined(__WINNT__)
  56 #include <winnt/obd_class.h>
  57 #else
  58 #error Unsupported operating system.
  59 #endif
  60
  61 /* OBD Device Declarations */
  62 extern struct obd_device *obd_devs[MAX_OBD_DEVICES];
  63 extern spinlock_t obd_dev_lock;
  64
  65 /* OBD Operations Declarations */
  66 extern struct obd_device *class_conn2obd(struct lustre_handle *);
  67 extern struct obd_device *class_exp2obd(struct obd_export *);
  68
  69 struct lu_device_type;
  70
  71 /* genops.c */
  72 struct obd_export *class_conn2export(struct lustre_handle *);
  73 int class_register_type(struct obd_ops *, struct md_ops *,
  74                         struct lprocfs_vars *, const char *nm,
  75                         struct lu_device_type *ldt);
  76 int class_unregister_type(const char *nm);
  77
  78 struct obd_device *class_newdev(const char *type_name, const char *name);
  79 void class_release_dev(struct obd_device *obd);
  80
  81 int class_name2dev(const char *name);
  82 struct obd_device *class_name2obd(const char *name);
  83 int class_uuid2dev(struct obd_uuid *uuid);
  84 struct obd_device *class_uuid2obd(struct obd_uuid *uuid);
  85 void class_obd_list(void);
  86 struct obd_device * class_find_client_obd(struct obd_uuid *tgt_uuid,
  87                                           const char * typ_name,
  88                                           struct obd_uuid *grp_uuid);
  89 struct obd_device * class_find_client_notype(struct obd_uuid *tgt_uuid,
  90                                              struct obd_uuid *grp_uuid);
  91 struct obd_device * class_devices_in_group(struct obd_uuid *grp_uuid,
  92                                            int *next);
  93 struct obd_device * class_num2obd(int num);
  94
  95 int oig_init(struct obd_io_group **oig);
  96 int oig_add_one(struct obd_io_group *oig, struct oig_callback_context *occ);
  97 void oig_complete_one(struct obd_io_group *oig,
  98                       struct oig_callback_context *occ, int rc);
  99 void oig_release(struct obd_io_group *oig);
 100 int oig_wait(struct obd_io_group *oig);
 101
 102 char *obd_export_nid2str(struct obd_export *exp);
 103
 104 int obd_export_evict_by_nid(struct obd_device *obd, const char *nid);
 105 int obd_export_evict_by_uuid(struct obd_device *obd, const char *uuid);
 106
 107 int obd_zombie_impexp_init(void);
 108 void obd_zombie_impexp_stop(void);
 109 void obd_zombie_impexp_cull(void);
 110
 111 /* obd_config.c */
 112 int class_process_config(struct lustre_cfg *lcfg);
 113 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
 114                              struct lustre_cfg *lcfg, void *data);
 115 int class_attach(struct lustre_cfg *lcfg);
 116 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
 117 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg);
 118 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg);
 119 struct obd_device *class_incref(struct obd_device *obd,
 120                                 const char *scope, const void *source);
 121 void class_decref(struct obd_device *obd,
 122                   const char *scope, const void *source);
 123
 124 /*obdecho*/
 125 #ifdef LPROCFS
 126 extern void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars);
 127 #else
 128 static inline void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars)
 129 {
 130         memset(lvars, 0, sizeof(*lvars));
 131 }
 132 #endif
 133
 134 #define CFG_F_START     0x01   /* Set when we start updating from a log */
 135 #define CFG_F_MARKER    0x02   /* We are within a maker */
 136 #define CFG_F_SKIP      0x04   /* We should ignore this cfg command */
 137 #define CFG_F_COMPAT146 0x08   /* Allow old-style logs */
 138 #define CFG_F_EXCLUDE   0x10   /* OST exclusion list */
 139
 140 /* Passed as data param to class_config_parse_llog */
 141 struct config_llog_instance {
 142         char *              cfg_instance;
 143         struct super_block *cfg_sb;
 144         struct obd_uuid     cfg_uuid;
 145         int                 cfg_last_idx; /* for partial llog processing */
 146         int                 cfg_flags;
 147 };
 148 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
 149                             struct config_llog_instance *cfg);
 150 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
 151                            struct config_llog_instance *cfg);
 152
 153 /* list of active configuration logs  */
 154 struct config_llog_data {
 155         char               *cld_logname;
 156         struct ldlm_res_id  cld_resid;
 157         struct config_llog_instance cld_cfg;
 158         struct list_head    cld_list_chain;
 159         atomic_t            cld_refcount;
 160         struct obd_export  *cld_mgcexp;
 161         unsigned int        cld_stopping:1, /* we were told to stop watching */
 162                             cld_lostlock:1; /* lock not requeued */
 163 };
 164
 165 struct lustre_profile {
 166         struct list_head lp_list;
 167         char            *lp_profile;
 168         char            *lp_dt;
 169         char            *lp_md;
 170 };
 171
 172 struct lustre_profile *class_get_profile(const char * prof);
 173 void class_del_profile(const char *prof);
 174 void class_del_profiles(void);
 175
 176 #define class_export_rpc_get(exp)                                       \
 177 ({                                                                      \
 178         atomic_inc(&(exp)->exp_rpc_count);                              \
 179         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",    \
 180                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 181         class_export_get(exp);                                          \
 182 })
 183
 184 #define class_export_rpc_put(exp)                                       \
 185 ({                                                                      \
 186         atomic_dec(&(exp)->exp_rpc_count);                              \
 187         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",    \
 188                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 189         class_export_put(exp);                                          \
 190 })
 191
 192 /* genops.c */
 193 struct obd_export *class_export_get(struct obd_export *exp);
 194 void class_export_put(struct obd_export *exp);
 195 struct obd_export *class_new_export(struct obd_device *obddev,
 196                                     struct obd_uuid *cluuid);
 197 void class_unlink_export(struct obd_export *exp);
 198
 199 struct obd_import *class_import_get(struct obd_import *);
 200 void class_import_put(struct obd_import *);
 201 struct obd_import *class_new_import(struct obd_device *obd);
 202 void class_destroy_import(struct obd_import *exp);
 203
 204 struct obd_type *class_search_type(const char *name);
 205 struct obd_type *class_get_type(const char *name);
 206 void class_put_type(struct obd_type *type);
 207 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 208                   struct obd_uuid *cluuid);
 209 int class_disconnect(struct obd_export *exp);
 210 void class_fail_export(struct obd_export *exp);
 211 void class_disconnect_exports(struct obd_device *obddev);
 212 int class_disconnect_stale_exports(struct obd_device *,
 213                                     int (*test_export)(struct obd_export *));
 214 int class_manual_cleanup(struct obd_device *obd);
 215
 216 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_flag valid);
 217 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
 218 void obdo_from_iattr(struct obdo *oa, struct iattr *attr,
 219                      unsigned int ia_valid);
 220 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, obd_flag valid);
 221 void md_from_obdo(struct md_op_data *op_data, struct obdo *oa, obd_flag valid);
 222 void obdo_from_md(struct obdo *oa, struct md_op_data *op_data,
 223                   unsigned int valid);
 224
 225 #define OBT(dev)        (dev)->obd_type
 226 #define OBP(dev, op)    (dev)->obd_type->typ_dt_ops->o_ ## op
 227 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
 228 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 229
 230 /* Ensure obd_setup: used for cleanup which must be called
 231    while obd is stopping */
 232 #define OBD_CHECK_DEV(obd)                                      \
 233 do {                                                            \
 234         if (!(obd)) {                                           \
 235                 CERROR("NULL device\n");                        \
 236                 RETURN(-ENODEV);                                \
 237         }                                                       \
 238 } while (0)
 239
 240 /* ensure obd_setup and !obd_stopping */
 241 #define OBD_CHECK_DEV_ACTIVE(obd)                               \
 242 do {                                                            \
 243         OBD_CHECK_DEV(obd);                                     \
 244         if (!(obd)->obd_set_up || (obd)->obd_stopping) {        \
 245                 CERROR("Device %d not setup\n",                 \
 246                        (obd)->obd_minor);                       \
 247                 RETURN(-ENODEV);                                \
 248         }                                                       \
 249 } while (0)
 250
 251
 252 #ifdef LPROCFS
 253 #define OBD_COUNTER_OFFSET(op)                                  \
 254         ((offsetof(struct obd_ops, o_ ## op) -                  \
 255           offsetof(struct obd_ops, o_iocontrol))                \
 256          / sizeof(((struct obd_ops *)(0))->o_iocontrol))
 257
 258 #define OBD_COUNTER_INCREMENT(obdx, op)                           \
 259         if ((obdx)->obd_stats != NULL) {                          \
 260                 unsigned int coffset;                             \
 261                 coffset = (unsigned int)((obdx)->obd_cntr_base) + \
 262                         OBD_COUNTER_OFFSET(op);                   \
 263                 LASSERT(coffset < (obdx)->obd_stats->ls_num);     \
 264                 lprocfs_counter_incr((obdx)->obd_stats, coffset); \
 265         }
 266
 267 #define EXP_COUNTER_INCREMENT(export, op)                                    \
 268         if ((export)->exp_obd->obd_stats != NULL) {                          \
 269                 unsigned int coffset;                                        \
 270                 coffset = (unsigned int)((export)->exp_obd->obd_cntr_base) + \
 271                         OBD_COUNTER_OFFSET(op);                              \
 272                 LASSERT(coffset < (export)->exp_obd->obd_stats->ls_num);     \
 273                 lprocfs_counter_incr((export)->exp_obd->obd_stats, coffset); \
 274                 if ((export)->exp_nid_stats != NULL &&                       \
 275                     (export)->exp_nid_stats->nid_stats != NULL)              \
 276                         lprocfs_counter_incr(                                \
 277                                 (export)->exp_nid_stats->nid_stats, coffset);\
 278         }
 279
 280 #define MD_COUNTER_OFFSET(op)                                   \
 281         ((offsetof(struct md_ops, m_ ## op) -                   \
 282           offsetof(struct md_ops, m_getstatus))                 \
 283          / sizeof(((struct md_ops *)(0))->m_getstatus))
 284
 285 #define MD_COUNTER_INCREMENT(obdx, op)                           \
 286         if ((obd)->md_stats != NULL) {                           \
 287                 unsigned int coffset;                            \
 288                 coffset = (unsigned int)((obdx)->md_cntr_base) + \
 289                         MD_COUNTER_OFFSET(op);                   \
 290                 LASSERT(coffset < (obdx)->md_stats->ls_num);     \
 291                 lprocfs_counter_incr((obdx)->md_stats, coffset); \
 292         }
 293
 294 #define EXP_MD_COUNTER_INCREMENT(export, op)                                 \
 295         if ((export)->exp_obd->obd_stats != NULL) {                          \
 296                 unsigned int coffset;                                        \
 297                 coffset = (unsigned int)((export)->exp_obd->md_cntr_base) +  \
 298                         MD_COUNTER_OFFSET(op);                               \
 299                 LASSERT(coffset < (export)->exp_obd->md_stats->ls_num);      \
 300                 lprocfs_counter_incr((export)->exp_obd->md_stats, coffset);  \
 301                 if ((export)->exp_md_stats != NULL)                          \
 302                         lprocfs_counter_incr(                                \
 303                                 (export)->exp_md_stats, coffset);            \
 304         }
 305
 306 #else
 307 #define OBD_COUNTER_OFFSET(op)
 308 #define OBD_COUNTER_INCREMENT(obd, op)
 309 #define EXP_COUNTER_INCREMENT(exp, op)
 310 #define MD_COUNTER_INCREMENT(obd, op)
 311 #define EXP_MD_COUNTER_INCREMENT(exp, op)
 312 #endif
 313
 314 #define OBD_CHECK_MD_OP(obd, op, err)                           \
 315 do {                                                            \
 316         if (!OBT(obd) || !MDP((obd), op)) {                     \
 317                 if (err)                                        \
 318                         CERROR("md_" #op ": dev %s/%d no operation\n", \
 319                                obd->obd_name, obd->obd_minor);  \
 320                 RETURN(err);                                    \
 321         }                                                       \
 322 } while (0)
 323
 324 #define EXP_CHECK_MD_OP(exp, op)                                \
 325 do {                                                            \
 326         if ((exp) == NULL) {                                    \
 327                 CERROR("obd_" #op ": NULL export\n");           \
 328                 RETURN(-ENODEV);                                \
 329         }                                                       \
 330         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 331                 CERROR("obd_" #op ": cleaned up obd\n");        \
 332                 RETURN(-EOPNOTSUPP);                            \
 333         }                                                       \
 334         if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
 335                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 336                        (exp)->exp_obd->obd_name,                \
 337                        (exp)->exp_obd->obd_minor);              \
 338                 RETURN(-EOPNOTSUPP);                            \
 339         }                                                       \
 340 } while (0)
 341
 342
 343 #define OBD_CHECK_DT_OP(obd, op, err)                           \
 344 do {                                                            \
 345         if (!OBT(obd) || !OBP((obd), op)) {                     \
 346                 if (err)                                        \
 347                         CERROR("obd_" #op ": dev %d no operation\n",    \
 348                                obd->obd_minor);                 \
 349                 RETURN(err);                                    \
 350         }                                                       \
 351 } while (0)
 352
 353 #define EXP_CHECK_DT_OP(exp, op)                                \
 354 do {                                                            \
 355         if ((exp) == NULL) {                                    \
 356                 CERROR("obd_" #op ": NULL export\n");           \
 357                 RETURN(-ENODEV);                                \
 358         }                                                       \
 359         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 360                 CERROR("obd_" #op ": cleaned up obd\n");        \
 361                 RETURN(-EOPNOTSUPP);                            \
 362         }                                                       \
 363         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 364                 CERROR("obd_" #op ": dev %d no operation\n",    \
 365                        (exp)->exp_obd->obd_minor);              \
 366                 RETURN(-EOPNOTSUPP);                            \
 367         }                                                       \
 368 } while (0)
 369
 370 #define CTXT_CHECK_OP(ctxt, op, err)                                 \
 371 do {                                                                 \
 372         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {             \
 373                 if (err)                                             \
 374                         CERROR("lop_" #op ": dev %d no operation\n", \
 375                                ctxt->loc_obd->obd_minor);            \
 376                 RETURN(err);                                         \
 377         }                                                            \
 378 } while (0)
 379
 380 static inline int class_devno_max(void)
 381 {
 382         return MAX_OBD_DEVICES;
 383 }
 384
 385 static inline int obd_get_info(struct obd_export *exp, __u32 keylen,
 386                                void *key, __u32 *vallen, void *val,
 387                                struct lov_stripe_md *lsm)
 388 {
 389         int rc;
 390         ENTRY;
 391
 392         EXP_CHECK_DT_OP(exp, get_info);
 393         EXP_COUNTER_INCREMENT(exp, get_info);
 394
 395         rc = OBP(exp->exp_obd, get_info)(exp, keylen, key, vallen, val, lsm);
 396         RETURN(rc);
 397 }
 398
 399 static inline int obd_set_info_async(struct obd_export *exp, obd_count keylen,
 400                                      void *key, obd_count vallen, void *val,
 401                                      struct ptlrpc_request_set *set)
 402 {
 403         int rc;
 404         ENTRY;
 405
 406         EXP_CHECK_DT_OP(exp, set_info_async);
 407         EXP_COUNTER_INCREMENT(exp, set_info_async);
 408
 409         rc = OBP(exp->exp_obd, set_info_async)(exp, keylen, key, vallen, val,
 410                                                set);
 411         RETURN(rc);
 412 }
 413
 414 #ifdef __KERNEL__
 415 #define DECLARE_LU_VARS(ldt, d)                 \
 416         struct lu_device_type *ldt;             \
 417         struct lu_device *d
 418 #else
 419 #define DECLARE_LU_VARS(ldt, d)                                 \
 420         extern void __placeholder_to_put_a_semicolon(void)
 421 #endif
 422 static inline int obd_setup(struct obd_device *obd, struct lustre_cfg *cfg)
 423 {
 424         int rc;
 425         DECLARE_LU_VARS(ldt, d);
 426         ENTRY;
 427
 428 #ifdef __KERNEL__
 429         ldt = obd->obd_type->typ_lu;
 430         if (ldt != NULL) {
 431                 struct lu_env env;
 432
 433                 rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
 434                 if (rc == 0) {
 435                         d = ldt->ldt_ops->ldto_device_alloc(&env, ldt, cfg);
 436                         lu_env_fini(&env);
 437                         if (!IS_ERR(d)) {
 438                                 obd->obd_lu_dev = d;
 439                                 d->ld_obd = obd;
 440                                 rc = 0;
 441                         } else
 442                                 rc = PTR_ERR(d);
 443                 }
 444         } else
 445 #endif
 446         {
 447                 OBD_CHECK_DT_OP(obd, setup, -EOPNOTSUPP);
 448                 OBD_COUNTER_INCREMENT(obd, setup);
 449                 rc = OBP(obd, setup)(obd, cfg);
 450         }
 451         RETURN(rc);
 452 }
 453
 454 static inline int obd_precleanup(struct obd_device *obd,
 455                                  enum obd_cleanup_stage cleanup_stage)
 456 {
 457         int rc;
 458         DECLARE_LU_VARS(ldt, d);
 459         ENTRY;
 460
 461         OBD_CHECK_DEV(obd);
 462 #ifdef __KERNEL__
 463         ldt = obd->obd_type->typ_lu;
 464         d = obd->obd_lu_dev;
 465         if (ldt != NULL && d != NULL) {
 466                 if (cleanup_stage == OBD_CLEANUP_EXPORTS) {
 467                         struct lu_env env;
 468
 469                         rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
 470                         if (rc == 0) {
 471                                 ldt->ldt_ops->ldto_device_fini(&env, d);
 472                                 lu_env_fini(&env);
 473                         }
 474                 } else {
 475                         rc = 0;
 476                 }
 477         } else
 478 #endif
 479         {
 480                 OBD_CHECK_DT_OP(obd, precleanup, 0);
 481                 rc = OBP(obd, precleanup)(obd, cleanup_stage);
 482         }
 483
 484         OBD_COUNTER_INCREMENT(obd, precleanup);
 485         RETURN(rc);
 486 }
 487
 488 static inline int obd_cleanup(struct obd_device *obd)
 489 {
 490         int rc;
 491         DECLARE_LU_VARS(ldt, d);
 492         ENTRY;
 493
 494         OBD_CHECK_DEV(obd);
 495
 496 #ifdef __KERNEL__
 497         ldt = obd->obd_type->typ_lu;
 498         d = obd->obd_lu_dev;
 499         if (ldt != NULL && d != NULL) {
 500                 struct lu_env env;
 501
 502                 rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
 503                 if (rc == 0) {
 504                         ldt->ldt_ops->ldto_device_free(&env, d);
 505                         lu_env_fini(&env);
 506                         obd->obd_lu_dev = NULL;
 507                 }
 508         } else
 509 #endif
 510         {
 511                 OBD_CHECK_DT_OP(obd, cleanup, 0);
 512                 rc = OBP(obd, cleanup)(obd);
 513         }
 514         OBD_COUNTER_INCREMENT(obd, cleanup);
 515         RETURN(rc);
 516 }
 517
 518 static inline int
 519 obd_process_config(struct obd_device *obd, int datalen, void *data)
 520 {
 521         int rc;
 522         DECLARE_LU_VARS(ldt, d);
 523         ENTRY;
 524
 525         OBD_CHECK_DEV(obd);
 526
 527 #ifdef __KERNEL__
 528         ldt = obd->obd_type->typ_lu;
 529         d = obd->obd_lu_dev;
 530         if (ldt != NULL && d != NULL) {
 531                 struct lu_env env;
 532
 533                 rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
 534                 if (rc == 0) {
 535                         rc = d->ld_ops->ldo_process_config(&env, d, data);
 536                         lu_env_fini(&env);
 537                 }
 538         } else
 539 #endif
 540         {
 541                 OBD_CHECK_DT_OP(obd, process_config, -EOPNOTSUPP);
 542                 rc = OBP(obd, process_config)(obd, datalen, data);
 543         }
 544         OBD_COUNTER_INCREMENT(obd, process_config);
 545
 546         RETURN(rc);
 547 }
 548
 549 /* Pack an in-memory MD struct for storage on disk.
 550  * Returns +ve size of packed MD (0 for free), or -ve error.
 551  *
 552  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 553  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 554  * If @*disk_tgt == NULL, it will be allocated
 555  */
 556 static inline int obd_packmd(struct obd_export *exp,
 557                              struct lov_mds_md **disk_tgt,
 558                              struct lov_stripe_md *mem_src)
 559 {
 560         int rc;
 561         ENTRY;
 562
 563         EXP_CHECK_DT_OP(exp, packmd);
 564         EXP_COUNTER_INCREMENT(exp, packmd);
 565
 566         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 567         RETURN(rc);
 568 }
 569
 570 static inline int obd_size_diskmd(struct obd_export *exp,
 571                                   struct lov_stripe_md *mem_src)
 572 {
 573         return obd_packmd(exp, NULL, mem_src);
 574 }
 575
 576 /* helper functions */
 577 static inline int obd_alloc_diskmd(struct obd_export *exp,
 578                                    struct lov_mds_md **disk_tgt)
 579 {
 580         LASSERT(disk_tgt);
 581         LASSERT(*disk_tgt == NULL);
 582         return obd_packmd(exp, disk_tgt, NULL);
 583 }
 584
 585 static inline int obd_free_diskmd(struct obd_export *exp,
 586                                   struct lov_mds_md **disk_tgt)
 587 {
 588         LASSERT(disk_tgt);
 589         LASSERT(*disk_tgt);
 590         return obd_packmd(exp, disk_tgt, NULL);
 591 }
 592
 593 /* Unpack an MD struct from disk to in-memory format.
 594  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 595  *
 596  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 597  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 598  * If @*mem_tgt == NULL, it will be allocated
 599  */
 600 static inline int obd_unpackmd(struct obd_export *exp,
 601                                struct lov_stripe_md **mem_tgt,
 602                                struct lov_mds_md *disk_src,
 603                                int disk_len)
 604 {
 605         int rc;
 606         ENTRY;
 607
 608         EXP_CHECK_DT_OP(exp, unpackmd);
 609         EXP_COUNTER_INCREMENT(exp, unpackmd);
 610
 611         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 612         RETURN(rc);
 613 }
 614
 615 /* helper functions */
 616 static inline int obd_alloc_memmd(struct obd_export *exp,
 617                                   struct lov_stripe_md **mem_tgt)
 618 {
 619         LASSERT(mem_tgt);
 620         LASSERT(*mem_tgt == NULL);
 621         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 622 }
 623
 624 static inline int obd_free_memmd(struct obd_export *exp,
 625                                  struct lov_stripe_md **mem_tgt)
 626 {
 627         LASSERT(mem_tgt);
 628         LASSERT(*mem_tgt);
 629         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 630 }
 631
 632 static inline int obd_checkmd(struct obd_export *exp,
 633                               struct obd_export *md_exp,
 634                               struct lov_stripe_md *mem_tgt)
 635 {
 636         int rc;
 637         ENTRY;
 638
 639         EXP_CHECK_DT_OP(exp, checkmd);
 640         EXP_COUNTER_INCREMENT(exp, checkmd);
 641
 642         rc = OBP(exp->exp_obd, checkmd)(exp, md_exp, mem_tgt);
 643         RETURN(rc);
 644 }
 645
 646 static inline int obd_precreate(struct obd_export *exp)
 647 {
 648         int rc;
 649         ENTRY;
 650
 651         EXP_CHECK_DT_OP(exp, precreate);
 652         OBD_COUNTER_INCREMENT(exp->exp_obd, precreate);
 653
 654         rc = OBP(exp->exp_obd, precreate)(exp);
 655         RETURN(rc);
 656 }
 657
 658 static inline int obd_create(struct obd_export *exp, struct obdo *obdo,
 659                              struct lov_stripe_md **ea,
 660                              struct obd_trans_info *oti)
 661 {
 662         int rc;
 663         ENTRY;
 664
 665         EXP_CHECK_DT_OP(exp, create);
 666         EXP_COUNTER_INCREMENT(exp, create);
 667
 668         rc = OBP(exp->exp_obd, create)(exp, obdo, ea, oti);
 669         RETURN(rc);
 670 }
 671
 672 static inline int obd_destroy(struct obd_export *exp, struct obdo *obdo,
 673                               struct lov_stripe_md *ea,
 674                               struct obd_trans_info *oti,
 675                               struct obd_export *md_exp)
 676 {
 677         int rc;
 678         ENTRY;
 679
 680         EXP_CHECK_DT_OP(exp, destroy);
 681         EXP_COUNTER_INCREMENT(exp, destroy);
 682
 683         rc = OBP(exp->exp_obd, destroy)(exp, obdo, ea, oti, md_exp);
 684         RETURN(rc);
 685 }
 686
 687 static inline int obd_getattr(struct obd_export *exp, struct obd_info *oinfo)
 688 {
 689         int rc;
 690         ENTRY;
 691
 692         EXP_CHECK_DT_OP(exp, getattr);
 693         EXP_COUNTER_INCREMENT(exp, getattr);
 694
 695         rc = OBP(exp->exp_obd, getattr)(exp, oinfo);
 696         RETURN(rc);
 697 }
 698
 699 static inline int obd_getattr_async(struct obd_export *exp,
 700                                     struct obd_info *oinfo,
 701                                     struct ptlrpc_request_set *set)
 702 {
 703         int rc;
 704         ENTRY;
 705
 706         EXP_CHECK_DT_OP(exp, getattr_async);
 707         EXP_COUNTER_INCREMENT(exp, getattr_async);
 708
 709         rc = OBP(exp->exp_obd, getattr_async)(exp, oinfo, set);
 710         RETURN(rc);
 711 }
 712
 713 static inline int obd_setattr(struct obd_export *exp, struct obd_info *oinfo,
 714                               struct obd_trans_info *oti)
 715 {
 716         int rc;
 717         ENTRY;
 718
 719         EXP_CHECK_DT_OP(exp, setattr);
 720         EXP_COUNTER_INCREMENT(exp, setattr);
 721
 722         rc = OBP(exp->exp_obd, setattr)(exp, oinfo, oti);
 723         RETURN(rc);
 724 }
 725
 726 /* This performs all the requests set init/wait/destroy actions. */
 727 static inline int obd_setattr_rqset(struct obd_export *exp,
 728                                     struct obd_info *oinfo,
 729                                     struct obd_trans_info *oti)
 730 {
 731         struct ptlrpc_request_set *set = NULL;
 732         int rc;
 733         ENTRY;
 734
 735         EXP_CHECK_DT_OP(exp, setattr_async);
 736         EXP_COUNTER_INCREMENT(exp, setattr_async);
 737
 738         set =  ptlrpc_prep_set();
 739         if (set == NULL)
 740                 RETURN(-ENOMEM);
 741
 742         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 743         if (rc == 0)
 744                 rc = ptlrpc_set_wait(set);
 745         ptlrpc_set_destroy(set);
 746         RETURN(rc);
 747 }
 748
 749 /* This adds all the requests into @set if @set != NULL, otherwise
 750    all requests are sent asynchronously without waiting for response. */
 751 static inline int obd_setattr_async(struct obd_export *exp,
 752                                     struct obd_info *oinfo,
 753                                     struct obd_trans_info *oti,
 754                                     struct ptlrpc_request_set *set)
 755 {
 756         int rc;
 757         ENTRY;
 758
 759         EXP_CHECK_DT_OP(exp, setattr_async);
 760         EXP_COUNTER_INCREMENT(exp, setattr_async);
 761
 762         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 763         RETURN(rc);
 764 }
 765
 766 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 767                                int priority)
 768 {
 769         struct obd_device *obd = imp->imp_obd;
 770         int rc;
 771         ENTRY;
 772
 773         OBD_CHECK_DEV_ACTIVE(obd);
 774         OBD_CHECK_DT_OP(obd, add_conn, -EOPNOTSUPP);
 775         OBD_COUNTER_INCREMENT(obd, add_conn);
 776
 777         rc = OBP(obd, add_conn)(imp, uuid, priority);
 778         RETURN(rc);
 779 }
 780
 781 static inline int obd_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
 782 {
 783         struct obd_device *obd = imp->imp_obd;
 784         int rc;
 785         ENTRY;
 786
 787         OBD_CHECK_DEV_ACTIVE(obd);
 788         OBD_CHECK_DT_OP(obd, del_conn, -EOPNOTSUPP);
 789         OBD_COUNTER_INCREMENT(obd, del_conn);
 790
 791         rc = OBP(obd, del_conn)(imp, uuid);
 792         RETURN(rc);
 793 }
 794
 795 static inline struct obd_uuid *obd_get_uuid(struct obd_export *exp)
 796 {
 797         struct obd_uuid *uuid;
 798         ENTRY;
 799
 800         OBD_CHECK_DT_OP(exp->exp_obd, get_uuid, NULL);
 801         EXP_COUNTER_INCREMENT(exp, get_uuid);
 802
 803         uuid = OBP(exp->exp_obd, get_uuid)(exp);
 804         RETURN(uuid);
 805 }
 806
 807 static inline int obd_connect(const struct lu_env *env,
 808                               struct lustre_handle *conn,struct obd_device *obd,
 809                               struct obd_uuid *cluuid,
 810                               struct obd_connect_data *d,
 811                               void *localdata)
 812 {
 813         int rc;
 814 #ifdef LIBCFS_DEBUG
 815         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 816                                                    * check */
 817 #endif
 818         ENTRY;
 819
 820         OBD_CHECK_DEV_ACTIVE(obd);
 821         OBD_CHECK_DT_OP(obd, connect, -EOPNOTSUPP);
 822         OBD_COUNTER_INCREMENT(obd, connect);
 823
 824         rc = OBP(obd, connect)(env, conn, obd, cluuid, d, localdata);
 825         /* check that only subset is granted */
 826         LASSERT(ergo(d != NULL,
 827                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 828         RETURN(rc);
 829 }
 830
 831 static inline int obd_reconnect(const struct lu_env *env,
 832                                 struct obd_export *exp,
 833                                 struct obd_device *obd,
 834                                 struct obd_uuid *cluuid,
 835                                 struct obd_connect_data *d)
 836 {
 837         int rc;
 838 #ifdef LIBCFS_DEBUG
 839         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 840                                                    * check */
 841 #endif
 842
 843         ENTRY;
 844
 845         OBD_CHECK_DEV_ACTIVE(obd);
 846         OBD_CHECK_DT_OP(obd, reconnect, 0);
 847         OBD_COUNTER_INCREMENT(obd, reconnect);
 848
 849         rc = OBP(obd, reconnect)(env, exp, obd, cluuid, d);
 850         /* check that only subset is granted */
 851         LASSERT(ergo(d != NULL,
 852                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 853         RETURN(rc);
 854 }
 855
 856 static inline int obd_disconnect(struct obd_export *exp)
 857 {
 858         int rc;
 859         ENTRY;
 860
 861         EXP_CHECK_DT_OP(exp, disconnect);
 862         EXP_COUNTER_INCREMENT(exp, disconnect);
 863
 864         rc = OBP(exp->exp_obd, disconnect)(exp);
 865         RETURN(rc);
 866 }
 867
 868 static inline int obd_fid_init(struct obd_export *exp)
 869 {
 870         int rc;
 871         ENTRY;
 872
 873         OBD_CHECK_DT_OP(exp->exp_obd, fid_init, 0);
 874         EXP_COUNTER_INCREMENT(exp, fid_init);
 875
 876         rc = OBP(exp->exp_obd, fid_init)(exp);
 877         RETURN(rc);
 878 }
 879
 880 static inline int obd_fid_fini(struct obd_export *exp)
 881 {
 882         int rc;
 883         ENTRY;
 884
 885         OBD_CHECK_DT_OP(exp->exp_obd, fid_fini, 0);
 886         EXP_COUNTER_INCREMENT(exp, fid_fini);
 887
 888         rc = OBP(exp->exp_obd, fid_fini)(exp);
 889         RETURN(rc);
 890 }
 891
 892 static inline int obd_fid_alloc(struct obd_export *exp,
 893                                 struct lu_fid *fid,
 894                                 struct md_op_data *op_data)
 895 {
 896         int rc;
 897         ENTRY;
 898
 899         EXP_CHECK_DT_OP(exp, fid_alloc);
 900         EXP_COUNTER_INCREMENT(exp, fid_alloc);
 901
 902         rc = OBP(exp->exp_obd, fid_alloc)(exp, fid, op_data);
 903         RETURN(rc);
 904 }
 905
 906 static inline int obd_fid_delete(struct obd_export *exp,
 907                                  const struct lu_fid *fid)
 908 {
 909         int rc;
 910         ENTRY;
 911
 912         EXP_CHECK_DT_OP(exp, fid_delete);
 913         EXP_COUNTER_INCREMENT(exp, fid_delete);
 914
 915         rc = OBP(exp->exp_obd, fid_delete)(exp, fid);
 916         RETURN(rc);
 917 }
 918
 919 static inline int obd_ping(struct obd_export *exp)
 920 {
 921         int rc;
 922         ENTRY;
 923
 924         OBD_CHECK_DT_OP(exp->exp_obd, ping, 0);
 925         EXP_COUNTER_INCREMENT(exp, ping);
 926
 927         rc = OBP(exp->exp_obd, ping)(exp);
 928         RETURN(rc);
 929 }
 930
 931 static inline int obd_pool_new(struct obd_device *obd, char *poolname)
 932 {
 933         int rc;
 934         ENTRY;
 935
 936         OBD_CHECK_DT_OP(obd, pool_new, -EOPNOTSUPP);
 937         OBD_COUNTER_INCREMENT(obd, pool_new);
 938
 939         rc = OBP(obd, pool_new)(obd, poolname);
 940         RETURN(rc);
 941 }
 942
 943 static inline int obd_pool_del(struct obd_device *obd, char *poolname)
 944 {
 945         int rc;
 946         ENTRY;
 947
 948         OBD_CHECK_DT_OP(obd, pool_del, -EOPNOTSUPP);
 949         OBD_COUNTER_INCREMENT(obd, pool_del);
 950
 951         rc = OBP(obd, pool_del)(obd, poolname);
 952         RETURN(rc);
 953 }
 954
 955 static inline int obd_pool_add(struct obd_device *obd, char *poolname, char *ostname)
 956 {
 957         int rc;
 958         ENTRY;
 959
 960         OBD_CHECK_DT_OP(obd, pool_add, -EOPNOTSUPP);
 961         OBD_COUNTER_INCREMENT(obd, pool_add);
 962
 963         rc = OBP(obd, pool_add)(obd, poolname, ostname);
 964         RETURN(rc);
 965 }
 966
 967 static inline int obd_pool_rem(struct obd_device *obd, char *poolname, char *ostname)
 968 {
 969         int rc;
 970         ENTRY;
 971
 972         OBD_CHECK_DT_OP(obd, pool_rem, -EOPNOTSUPP);
 973         OBD_COUNTER_INCREMENT(obd, pool_rem);
 974
 975         rc = OBP(obd, pool_rem)(obd, poolname, ostname);
 976         RETURN(rc);
 977 }
 978
 979 static inline int obd_init_export(struct obd_export *exp)
 980 {
 981         int rc = 0;
 982
 983         ENTRY;
 984         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 985             OBP((exp)->exp_obd, init_export))
 986                 rc = OBP(exp->exp_obd, init_export)(exp);
 987         RETURN(rc);
 988 }
 989
 990 static inline int obd_destroy_export(struct obd_export *exp)
 991 {
 992         ENTRY;
 993         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 994             OBP((exp)->exp_obd, destroy_export))
 995                 OBP(exp->exp_obd, destroy_export)(exp);
 996         RETURN(0);
 997 }
 998
 999 static inline int obd_extent_calc(struct obd_export *exp,
1000                                   struct lov_stripe_md *md,
1001                                   int cmd, obd_off *offset)
1002 {
1003         int rc;
1004         ENTRY;
1005         EXP_CHECK_DT_OP(exp, extent_calc);
1006         rc = OBP(exp->exp_obd, extent_calc)(exp, md, cmd, offset);
1007         RETURN(rc);
1008 }
1009
1010 static inline struct dentry *
1011 obd_lvfs_fid2dentry(struct obd_export *exp, __u64 id_ino, __u32 gen, __u64 gr)
1012 {
1013         LASSERT(exp->exp_obd);
1014
1015         return lvfs_fid2dentry(&exp->exp_obd->obd_lvfs_ctxt, id_ino, gen, gr,
1016                                exp->exp_obd);
1017 }
1018
1019 static inline int
1020 obd_lvfs_open_llog(struct obd_export *exp, __u64 id_ino, struct dentry *dentry)
1021 {
1022         LASSERT(exp->exp_obd);
1023         CERROR("FIXME what's the story here?  This needs to be an obd fn?\n");
1024 #if 0
1025         return lvfs_open_llog(&exp->exp_obd->obd_lvfs_ctxt, id_ino,
1026                               dentry, exp->exp_obd);
1027 #endif
1028         return 0;
1029 }
1030
1031 #ifndef time_before
1032 #define time_before(t1, t2) ((long)t2 - (long)t1 > 0)
1033 #endif
1034
1035 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1036  * If the cache is older than @max_age we will get a new value from the
1037  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1038 static inline int obd_statfs_async(struct obd_device *obd,
1039                                    struct obd_info *oinfo,
1040                                    __u64 max_age,
1041                                    struct ptlrpc_request_set *rqset)
1042 {
1043         int rc = 0;
1044         ENTRY;
1045
1046         if (obd == NULL)
1047                 RETURN(-EINVAL);
1048
1049         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1050         OBD_COUNTER_INCREMENT(obd, statfs);
1051
1052         CDEBUG(D_SUPER, "%s: osfs %p age "LPU64", max_age "LPU64"\n",
1053                obd->obd_name, &obd->obd_osfs, obd->obd_osfs_age, max_age);
1054         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1055                 rc = OBP(obd, statfs_async)(obd, oinfo, max_age, rqset);
1056         } else {
1057                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1058                        " objects "LPU64"/"LPU64"\n",
1059                        obd->obd_name, &obd->obd_osfs,
1060                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1061                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1062                 spin_lock(&obd->obd_osfs_lock);
1063                 memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
1064                 spin_unlock(&obd->obd_osfs_lock);
1065                 oinfo->oi_flags |= OBD_STATFS_FROM_CACHE;
1066                 if (oinfo->oi_cb_up)
1067                         oinfo->oi_cb_up(oinfo, 0);
1068         }
1069         RETURN(rc);
1070 }
1071
1072 static inline int obd_statfs_rqset(struct obd_device *obd,
1073                                    struct obd_statfs *osfs, __u64 max_age,
1074                                    __u32 flags)
1075 {
1076         struct ptlrpc_request_set *set = NULL;
1077         struct obd_info oinfo = { { { 0 } } };
1078         int rc = 0;
1079         ENTRY;
1080
1081         set =  ptlrpc_prep_set();
1082         if (set == NULL)
1083                 RETURN(-ENOMEM);
1084
1085         oinfo.oi_osfs = osfs;
1086         oinfo.oi_flags = flags;
1087         rc = obd_statfs_async(obd, &oinfo, max_age, set);
1088         if (rc == 0)
1089                 rc = ptlrpc_set_wait(set);
1090         ptlrpc_set_destroy(set);
1091         RETURN(rc);
1092 }
1093
1094 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1095  * If the cache is older than @max_age we will get a new value from the
1096  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1097 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
1098                              __u64 max_age, __u32 flags)
1099 {
1100         int rc = 0;
1101         ENTRY;
1102
1103         if (obd == NULL)
1104                 RETURN(-EINVAL);
1105
1106         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1107         OBD_COUNTER_INCREMENT(obd, statfs);
1108
1109         CDEBUG(D_SUPER, "osfs "LPU64", max_age "LPU64"\n",
1110                obd->obd_osfs_age, max_age);
1111         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1112                 rc = OBP(obd, statfs)(obd, osfs, max_age, flags);
1113                 if (rc == 0) {
1114                         spin_lock(&obd->obd_osfs_lock);
1115                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
1116                         obd->obd_osfs_age = cfs_time_current_64();
1117                         spin_unlock(&obd->obd_osfs_lock);
1118                 }
1119         } else {
1120                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1121                        " objects "LPU64"/"LPU64"\n",
1122                        obd->obd_name, &obd->obd_osfs,
1123                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1124                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1125                 spin_lock(&obd->obd_osfs_lock);
1126                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
1127                 spin_unlock(&obd->obd_osfs_lock);
1128         }
1129         RETURN(rc);
1130 }
1131
1132 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
1133                            struct lov_stripe_md *ea, obd_size start,
1134                            obd_size end, void *capa)
1135 {
1136         int rc;
1137         ENTRY;
1138
1139         OBD_CHECK_DT_OP(exp->exp_obd, sync, -EOPNOTSUPP);
1140         EXP_COUNTER_INCREMENT(exp, sync);
1141
1142         rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end, capa);
1143         RETURN(rc);
1144 }
1145
1146 static inline int obd_punch_rqset(struct obd_export *exp,
1147                                   struct obd_info *oinfo,
1148                                   struct obd_trans_info *oti)
1149 {
1150         struct ptlrpc_request_set *set = NULL;
1151         int rc;
1152         ENTRY;
1153
1154         EXP_CHECK_DT_OP(exp, punch);
1155         EXP_COUNTER_INCREMENT(exp, punch);
1156
1157         set =  ptlrpc_prep_set();
1158         if (set == NULL)
1159                 RETURN(-ENOMEM);
1160
1161         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, set);
1162         if (rc == 0)
1163                 rc = ptlrpc_set_wait(set);
1164         ptlrpc_set_destroy(set);
1165         RETURN(rc);
1166 }
1167
1168 static inline int obd_punch(struct obd_export *exp, struct obd_info *oinfo,
1169                             struct obd_trans_info *oti,
1170                             struct ptlrpc_request_set *rqset)
1171 {
1172         int rc;
1173         ENTRY;
1174
1175         EXP_CHECK_DT_OP(exp, punch);
1176         EXP_COUNTER_INCREMENT(exp, punch);
1177
1178         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, rqset);
1179         RETURN(rc);
1180 }
1181
1182 static inline int obd_brw(int cmd, struct obd_export *exp,
1183                           struct obd_info *oinfo, obd_count oa_bufs,
1184                           struct brw_page *pg, struct obd_trans_info *oti)
1185 {
1186         int rc;
1187         ENTRY;
1188
1189         EXP_CHECK_DT_OP(exp, brw);
1190         EXP_COUNTER_INCREMENT(exp, brw);
1191
1192         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
1193                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
1194                        "or OBD_BRW_CHECK\n");
1195                 LBUG();
1196         }
1197
1198         rc = OBP(exp->exp_obd, brw)(cmd, exp, oinfo, oa_bufs, pg, oti);
1199         RETURN(rc);
1200 }
1201
1202 static inline int obd_brw_async(int cmd, struct obd_export *exp,
1203                                 struct obd_info *oinfo, obd_count oa_bufs,
1204                                 struct brw_page *pg, struct obd_trans_info *oti,
1205                                 struct ptlrpc_request_set *set)
1206 {
1207         int rc;
1208         ENTRY;
1209
1210         EXP_CHECK_DT_OP(exp, brw_async);
1211         EXP_COUNTER_INCREMENT(exp, brw_async);
1212
1213         if (!(cmd & OBD_BRW_RWMASK)) {
1214                 CERROR("obd_brw: cmd must be OBD_BRW_READ or OBD_BRW_WRITE\n");
1215                 LBUG();
1216         }
1217
1218         rc = OBP(exp->exp_obd, brw_async)(cmd, exp, oinfo, oa_bufs, pg,oti,set);
1219         RETURN(rc);
1220 }
1221
1222 static inline int obd_brw_rqset(int cmd, struct obd_export *exp,
1223                                 struct obdo *oa, struct lov_stripe_md *lsm,
1224                                 obd_count oa_bufs, struct brw_page *pg,
1225                                 struct obd_trans_info *oti,
1226                                 struct obd_capa *ocapa)
1227 {
1228         struct ptlrpc_request_set *set = NULL;
1229         struct obd_info oinfo = { { { 0 } } };
1230         int rc = 0;
1231         ENTRY;
1232
1233         set =  ptlrpc_prep_set();
1234         if (set == NULL)
1235                 RETURN(-ENOMEM);
1236
1237         oinfo.oi_oa = oa;
1238         oinfo.oi_md = lsm;
1239         oinfo.oi_capa = ocapa;
1240         rc = obd_brw_async(cmd, exp, &oinfo, oa_bufs, pg, oti, set);
1241         if (rc == 0) {
1242                 rc = ptlrpc_set_wait(set);
1243                 if (rc)
1244                         CERROR("error from callback: rc = %d\n", rc);
1245         } else {
1246                 CDEBUG(rc == -ENOSPC ? D_INODE : D_ERROR,
1247                        "error from obd_brw_async: rc = %d\n", rc);
1248         }
1249         ptlrpc_set_destroy(set);
1250         RETURN(rc);
1251 }
1252
1253 static inline  int obd_prep_async_page(struct obd_export *exp,
1254                                        struct lov_stripe_md *lsm,
1255                                        struct lov_oinfo *loi,
1256                                        cfs_page_t *page, obd_off offset,
1257                                        struct obd_async_page_ops *ops,
1258                                        void *data, void **res, int nocache,
1259                                        struct lustre_handle *lockh)
1260 {
1261         int ret;
1262         ENTRY;
1263
1264         EXP_CHECK_DT_OP(exp, prep_async_page);
1265         EXP_COUNTER_INCREMENT(exp, prep_async_page);
1266
1267         ret = OBP(exp->exp_obd, prep_async_page)(exp, lsm, loi, page, offset,
1268                                                  ops, data, res, nocache,
1269                                                  lockh);
1270         RETURN(ret);
1271 }
1272
1273 /**
1274  * Checks if requested extent lock is compatible with a lock under the page.
1275  *
1276  * Checks if the lock under \a page is compatible with a read or write lock
1277  * (specified by \a rw) for an extent [\a start , \a end].
1278  *
1279  * \param exp obd export (lov or osc)
1280  * \param lsm striping information for the file
1281  * \param res async_page placeholder
1282  * \param rw OBD_BRW_READ if requested for reading,
1283  *           OBD_BRW_WRITE if requested for writing
1284  * \param start start of the requested extent
1285  * \param end end of the requested extent
1286  * \param cookie transparent parameter for passing locking context
1287  *
1288  * \post result == 1, *cookie == context, appropriate lock is referenced or
1289  *
1290  * \retval 1 owned lock is reused for the request
1291  * \retval 0 no lock reused for the request
1292  * \retval -ENOTSUPP reget_short_lock is not exported at this layer
1293  *
1294  * \see obd_release_short_lock
1295  */
1296 static inline int obd_reget_short_lock(struct obd_export *exp,
1297                                        struct lov_stripe_md *lsm,
1298                                        void **res, int rw,
1299                                        obd_off start, obd_off end,
1300                                        void **cookie)
1301 {
1302         ENTRY;
1303
1304         EXP_CHECK_DT_OP(exp, reget_short_lock);
1305         EXP_COUNTER_INCREMENT(exp, reget_short_lock);
1306
1307         RETURN(OBP(exp->exp_obd, reget_short_lock)(exp, lsm, res, rw,
1308                                                    start, end, cookie));
1309 }
1310
1311
1312 /**
1313  * Releases a reference to a lock taken in a "fast" way.
1314  *
1315  * Releases a read or write (specified by \a rw) lock
1316  * referenced by \a cookie.
1317  *
1318  * \param exp obd export (lov or osc)
1319  * \param lsm striping information for the file
1320  * \param end end of the locked extent
1321  * \param rw OBD_BRW_READ if requested for reading,
1322  *           OBD_BRW_WRITE if requested for writing
1323  * \param cookie transparent parameter for passing locking context
1324  *
1325  * \post appropriate lock is dereferenced
1326  *
1327  * \see obd_reget_short_lock
1328  */
1329 static inline int obd_release_short_lock(struct obd_export *exp,
1330                                          struct lov_stripe_md *lsm, obd_off end,
1331                                          void *cookie, int rw)
1332 {
1333         ENTRY;
1334
1335         EXP_CHECK_DT_OP(exp, release_short_lock);
1336         EXP_COUNTER_INCREMENT(exp, release_short_lock);
1337
1338         RETURN(OBP(exp->exp_obd, release_short_lock)(exp, lsm, end,
1339                                                      cookie, rw));
1340 }
1341
1342 static inline int obd_queue_async_io(struct obd_export *exp,
1343                                      struct lov_stripe_md *lsm,
1344                                      struct lov_oinfo *loi, void *cookie,
1345                                      int cmd, obd_off off, int count,
1346                                      obd_flag brw_flags, obd_flag async_flags)
1347 {
1348         int rc;
1349         ENTRY;
1350
1351         EXP_CHECK_DT_OP(exp, queue_async_io);
1352         EXP_COUNTER_INCREMENT(exp, queue_async_io);
1353         LASSERT(cmd & OBD_BRW_RWMASK);
1354
1355         rc = OBP(exp->exp_obd, queue_async_io)(exp, lsm, loi, cookie, cmd, off,
1356                                                count, brw_flags, async_flags);
1357         RETURN(rc);
1358 }
1359
1360 static inline int obd_set_async_flags(struct obd_export *exp,
1361                                       struct lov_stripe_md *lsm,
1362                                       struct lov_oinfo *loi, void *cookie,
1363                                       obd_flag async_flags)
1364 {
1365         int rc;
1366         ENTRY;
1367
1368         EXP_CHECK_DT_OP(exp, set_async_flags);
1369         EXP_COUNTER_INCREMENT(exp, set_async_flags);
1370
1371         rc = OBP(exp->exp_obd, set_async_flags)(exp, lsm, loi, cookie,
1372                                                 async_flags);
1373         RETURN(rc);
1374 }
1375
1376 static inline int obd_queue_group_io(struct obd_export *exp,
1377                                      struct lov_stripe_md *lsm,
1378                                      struct lov_oinfo *loi,
1379                                      struct obd_io_group *oig,
1380                                      void *cookie, int cmd, obd_off off,
1381                                      int count, obd_flag brw_flags,
1382                                      obd_flag async_flags)
1383 {
1384         int rc;
1385         ENTRY;
1386
1387         EXP_CHECK_DT_OP(exp, queue_group_io);
1388         EXP_COUNTER_INCREMENT(exp, queue_group_io);
1389         LASSERT(cmd & OBD_BRW_RWMASK);
1390
1391         rc = OBP(exp->exp_obd, queue_group_io)(exp, lsm, loi, oig, cookie,
1392                                                cmd, off, count, brw_flags,
1393                                                async_flags);
1394         RETURN(rc);
1395 }
1396
1397 static inline int obd_trigger_group_io(struct obd_export *exp,
1398                                        struct lov_stripe_md *lsm,
1399                                        struct lov_oinfo *loi,
1400                                        struct obd_io_group *oig)
1401 {
1402         int rc;
1403         ENTRY;
1404
1405         EXP_CHECK_DT_OP(exp, trigger_group_io);
1406         EXP_COUNTER_INCREMENT(exp, trigger_group_io);
1407
1408         rc = OBP(exp->exp_obd, trigger_group_io)(exp, lsm, loi, oig);
1409         RETURN(rc);
1410 }
1411
1412 static inline int obd_teardown_async_page(struct obd_export *exp,
1413                                           struct lov_stripe_md *lsm,
1414                                           struct lov_oinfo *loi, void *cookie)
1415 {
1416         int rc;
1417         ENTRY;
1418
1419         EXP_CHECK_DT_OP(exp, teardown_async_page);
1420         EXP_COUNTER_INCREMENT(exp, teardown_async_page);
1421
1422         rc = OBP(exp->exp_obd, teardown_async_page)(exp, lsm, loi, cookie);
1423         RETURN(rc);
1424 }
1425
1426 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
1427                              int objcount, struct obd_ioobj *obj,
1428                              struct niobuf_remote *remote, int *pages,
1429                              struct niobuf_local *local,
1430                              struct obd_trans_info *oti,
1431                              struct lustre_capa *capa)
1432 {
1433         int rc;
1434         ENTRY;
1435
1436         EXP_CHECK_DT_OP(exp, preprw);
1437         EXP_COUNTER_INCREMENT(exp, preprw);
1438
1439         rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, remote,
1440                                        pages, local, oti, capa);
1441         RETURN(rc);
1442 }
1443
1444 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
1445                                int objcount, struct obd_ioobj *obj,
1446                                struct niobuf_remote *rnb, int pages,
1447                                struct niobuf_local *local,
1448                                struct obd_trans_info *oti, int rc)
1449 {
1450         ENTRY;
1451
1452         EXP_CHECK_DT_OP(exp, commitrw);
1453         EXP_COUNTER_INCREMENT(exp, commitrw);
1454
1455         rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj,
1456                                          rnb, pages, local, oti, rc);
1457         RETURN(rc);
1458 }
1459
1460 static inline int obd_merge_lvb(struct obd_export *exp,
1461                                 struct lov_stripe_md *lsm,
1462                                 struct ost_lvb *lvb, int kms_only)
1463 {
1464         int rc;
1465         ENTRY;
1466
1467         EXP_CHECK_DT_OP(exp, merge_lvb);
1468         EXP_COUNTER_INCREMENT(exp, merge_lvb);
1469
1470         rc = OBP(exp->exp_obd, merge_lvb)(exp, lsm, lvb, kms_only);
1471         RETURN(rc);
1472 }
1473
1474 static inline int obd_adjust_kms(struct obd_export *exp,
1475                                  struct lov_stripe_md *lsm, obd_off size,
1476                                  int shrink)
1477 {
1478         int rc;
1479         ENTRY;
1480
1481         EXP_CHECK_DT_OP(exp, adjust_kms);
1482         EXP_COUNTER_INCREMENT(exp, adjust_kms);
1483
1484         rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
1485         RETURN(rc);
1486 }
1487
1488 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1489                                 int len, void *karg, void *uarg)
1490 {
1491         int rc;
1492         ENTRY;
1493
1494         EXP_CHECK_DT_OP(exp, iocontrol);
1495         EXP_COUNTER_INCREMENT(exp, iocontrol);
1496
1497         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1498         RETURN(rc);
1499 }
1500
1501 static inline int obd_enqueue_rqset(struct obd_export *exp,
1502                                     struct obd_info *oinfo,
1503                                     struct ldlm_enqueue_info *einfo)
1504 {
1505         struct ptlrpc_request_set *set = NULL;
1506         int rc;
1507         ENTRY;
1508
1509         EXP_CHECK_DT_OP(exp, enqueue);
1510         EXP_COUNTER_INCREMENT(exp, enqueue);
1511
1512         set =  ptlrpc_prep_set();
1513         if (set == NULL)
1514                 RETURN(-ENOMEM);
1515
1516         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1517         if (rc == 0)
1518                 rc = ptlrpc_set_wait(set);
1519         ptlrpc_set_destroy(set);
1520         RETURN(rc);
1521 }
1522
1523 static inline int obd_enqueue(struct obd_export *exp,
1524                               struct obd_info *oinfo,
1525                               struct ldlm_enqueue_info *einfo,
1526                               struct ptlrpc_request_set *set)
1527 {
1528         int rc;
1529         ENTRY;
1530
1531         EXP_CHECK_DT_OP(exp, enqueue);
1532         EXP_COUNTER_INCREMENT(exp, enqueue);
1533
1534         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1535         RETURN(rc);
1536 }
1537
1538 static inline int obd_match(struct obd_export *exp, struct lov_stripe_md *ea,
1539                             __u32 type, ldlm_policy_data_t *policy, __u32 mode,
1540                             int *flags, void *data, struct lustre_handle *lockh)
1541 {
1542         int rc;
1543         ENTRY;
1544
1545         EXP_CHECK_DT_OP(exp, match);
1546         EXP_COUNTER_INCREMENT(exp, match);
1547
1548         rc = OBP(exp->exp_obd, match)(exp, ea, type, policy, mode, flags, data,
1549                                       lockh);
1550         RETURN(rc);
1551 }
1552
1553 static inline int obd_change_cbdata(struct obd_export *exp,
1554                                     struct lov_stripe_md *lsm,
1555                                     ldlm_iterator_t it, void *data)
1556 {
1557         int rc;
1558         ENTRY;
1559
1560         EXP_CHECK_DT_OP(exp, change_cbdata);
1561         EXP_COUNTER_INCREMENT(exp, change_cbdata);
1562
1563         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1564         RETURN(rc);
1565 }
1566
1567 static inline int obd_cancel(struct obd_export *exp,
1568                              struct lov_stripe_md *ea, __u32 mode,
1569                              struct lustre_handle *lockh)
1570 {
1571         int rc;
1572         ENTRY;
1573
1574         EXP_CHECK_DT_OP(exp, cancel);
1575         EXP_COUNTER_INCREMENT(exp, cancel);
1576
1577         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1578         RETURN(rc);
1579 }
1580
1581 static inline int obd_cancel_unused(struct obd_export *exp,
1582                                     struct lov_stripe_md *ea,
1583                                     int flags, void *opaque)
1584 {
1585         int rc;
1586         ENTRY;
1587
1588         EXP_CHECK_DT_OP(exp, cancel_unused);
1589         EXP_COUNTER_INCREMENT(exp, cancel_unused);
1590
1591         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1592         RETURN(rc);
1593 }
1594
1595 static inline int obd_pin(struct obd_export *exp, const struct lu_fid *fid,
1596                           struct obd_capa *oc, struct obd_client_handle *handle,
1597                           int flag)
1598 {
1599         int rc;
1600         ENTRY;
1601
1602         EXP_CHECK_DT_OP(exp, pin);
1603         EXP_COUNTER_INCREMENT(exp, pin);
1604
1605         rc = OBP(exp->exp_obd, pin)(exp, fid, oc, handle, flag);
1606         RETURN(rc);
1607 }
1608
1609 static inline int obd_unpin(struct obd_export *exp,
1610                             struct obd_client_handle *handle, int flag)
1611 {
1612         int rc;
1613         ENTRY;
1614
1615         EXP_CHECK_DT_OP(exp, unpin);
1616         EXP_COUNTER_INCREMENT(exp, unpin);
1617
1618         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1619         RETURN(rc);
1620 }
1621
1622
1623 static inline void obd_import_event(struct obd_device *obd,
1624                                     struct obd_import *imp,
1625                                     enum obd_import_event event)
1626 {
1627         ENTRY;
1628         if (!obd) {
1629                 CERROR("NULL device\n");
1630                 EXIT;
1631                 return;
1632         }
1633         if (obd->obd_set_up && OBP(obd, import_event)) {
1634                 OBD_COUNTER_INCREMENT(obd, import_event);
1635                 OBP(obd, import_event)(obd, imp, event);
1636         }
1637         EXIT;
1638 }
1639
1640 static inline int obd_llog_connect(struct obd_export *exp,
1641                                    struct llogd_conn_body *body)
1642 {
1643         int rc;
1644         ENTRY;
1645
1646         OBD_CHECK_DT_OP(exp->exp_obd, llog_connect, 0);
1647         EXP_COUNTER_INCREMENT(exp, llog_connect);
1648
1649         rc = OBP(exp->exp_obd, llog_connect)(exp, body);
1650         RETURN(rc);
1651 }
1652
1653
1654 static inline int obd_notify(struct obd_device *obd,
1655                              struct obd_device *watched,
1656                              enum obd_notify_event ev,
1657                              void *data)
1658 {
1659         int rc;
1660         ENTRY;
1661         OBD_CHECK_DEV(obd);
1662
1663         /* the check for async_recov is a complete hack - I'm hereby
1664            overloading the meaning to also mean "this was called from
1665            mds_postsetup".  I know that my mds is able to handle notifies
1666            by this point, and it needs to get them to execute mds_postrecov. */
1667         if (!obd->obd_set_up && !obd->obd_async_recov) {
1668                 CDEBUG(D_HA, "obd %s not set up\n", obd->obd_name);
1669                 RETURN(-EINVAL);
1670         }
1671
1672         if (!OBP(obd, notify)) {
1673                 CERROR("obd %s has no notify handler\n", obd->obd_name);
1674                 RETURN(-ENOSYS);
1675         }
1676
1677         OBD_COUNTER_INCREMENT(obd, notify);
1678         rc = OBP(obd, notify)(obd, watched, ev, data);
1679         RETURN(rc);
1680 }
1681
1682 static inline int obd_notify_observer(struct obd_device *observer,
1683                                       struct obd_device *observed,
1684                                       enum obd_notify_event ev,
1685                                       void *data)
1686 {
1687         int rc1;
1688         int rc2;
1689
1690         struct obd_notify_upcall *onu;
1691
1692         if (observer->obd_observer)
1693                 rc1 = obd_notify(observer->obd_observer, observed, ev, data);
1694         else
1695                 rc1 = 0;
1696         /*
1697          * Also, call non-obd listener, if any
1698          */
1699         onu = &observer->obd_upcall;
1700         if (onu->onu_upcall != NULL)
1701                 rc2 = onu->onu_upcall(observer, observed, ev, onu->onu_owner);
1702         else
1703                 rc2 = 0;
1704
1705         return rc1 ? rc1 : rc2;
1706 }
1707
1708 static inline int obd_quotacheck(struct obd_export *exp,
1709                                  struct obd_quotactl *oqctl)
1710 {
1711         int rc;
1712         ENTRY;
1713
1714         EXP_CHECK_DT_OP(exp, quotacheck);
1715         EXP_COUNTER_INCREMENT(exp, quotacheck);
1716
1717         rc = OBP(exp->exp_obd, quotacheck)(exp, oqctl);
1718         RETURN(rc);
1719 }
1720
1721 static inline int obd_quotactl(struct obd_export *exp,
1722                                struct obd_quotactl *oqctl)
1723 {
1724         int rc;
1725         ENTRY;
1726
1727         EXP_CHECK_DT_OP(exp, quotactl);
1728         EXP_COUNTER_INCREMENT(exp, quotactl);
1729
1730         rc = OBP(exp->exp_obd, quotactl)(exp, oqctl);
1731         RETURN(rc);
1732 }
1733
1734 static inline int obd_health_check(struct obd_device *obd)
1735 {
1736         /* returns: 0 on healthy
1737          *         >0 on unhealthy + reason code/flag
1738          *            however the only suppored reason == 1 right now
1739          *            We'll need to define some better reasons
1740          *            or flags in the future.
1741          *         <0 on error
1742          */
1743         int rc;
1744         ENTRY;
1745
1746         /* don't use EXP_CHECK_DT_OP, because NULL method is normal here */
1747         if (obd == NULL || !OBT(obd)) {
1748                 CERROR("cleaned up obd\n");
1749                 RETURN(-EOPNOTSUPP);
1750         }
1751         if (!obd->obd_set_up || obd->obd_stopping)
1752                 RETURN(0);
1753         if (!OBP(obd, health_check))
1754                 RETURN(0);
1755
1756         rc = OBP(obd, health_check)(obd);
1757         RETURN(rc);
1758 }
1759
1760 static inline int obd_register_observer(struct obd_device *obd,
1761                                         struct obd_device *observer)
1762 {
1763         ENTRY;
1764         OBD_CHECK_DEV(obd);
1765         if (obd->obd_observer && observer)
1766                 RETURN(-EALREADY);
1767         obd->obd_observer = observer;
1768         RETURN(0);
1769 }
1770
1771 static inline int obd_register_page_removal_cb(struct obd_export *exp,
1772                                                obd_page_removal_cb_t cb,
1773                                                obd_pin_extent_cb pin_cb)
1774 {
1775         int rc;
1776         ENTRY;
1777
1778         OBD_CHECK_DT_OP(exp->exp_obd, register_page_removal_cb, 0);
1779         OBD_COUNTER_INCREMENT(exp->exp_obd, register_page_removal_cb);
1780
1781         rc = OBP(exp->exp_obd, register_page_removal_cb)(exp, cb, pin_cb);
1782         RETURN(rc);
1783 }
1784
1785 static inline int obd_unregister_page_removal_cb(struct obd_export *exp,
1786                                                  obd_page_removal_cb_t cb)
1787 {
1788         int rc;
1789         ENTRY;
1790
1791         OBD_CHECK_DT_OP(exp->exp_obd, unregister_page_removal_cb, 0);
1792         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_page_removal_cb);
1793
1794         rc = OBP(exp->exp_obd, unregister_page_removal_cb)(exp, cb);
1795         RETURN(rc);
1796 }
1797
1798 static inline int obd_register_lock_cancel_cb(struct obd_export *exp,
1799                                               obd_lock_cancel_cb cb)
1800 {
1801         int rc;
1802         ENTRY;
1803
1804         OBD_CHECK_DT_OP(exp->exp_obd, register_lock_cancel_cb, 0);
1805         OBD_COUNTER_INCREMENT(exp->exp_obd, register_lock_cancel_cb);
1806
1807         rc = OBP(exp->exp_obd, register_lock_cancel_cb)(exp, cb);
1808         RETURN(rc);
1809 }
1810
1811 static inline int obd_unregister_lock_cancel_cb(struct obd_export *exp,
1812                                                  obd_lock_cancel_cb cb)
1813 {
1814         int rc;
1815         ENTRY;
1816
1817         OBD_CHECK_DT_OP(exp->exp_obd, unregister_lock_cancel_cb, 0);
1818         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_lock_cancel_cb);
1819
1820         rc = OBP(exp->exp_obd, unregister_lock_cancel_cb)(exp, cb);
1821         RETURN(rc);
1822 }
1823
1824 /* metadata helpers */
1825 static inline int md_getstatus(struct obd_export *exp,
1826                                struct lu_fid *fid, struct obd_capa **pc)
1827 {
1828         int rc;
1829         ENTRY;
1830
1831         EXP_CHECK_MD_OP(exp, getstatus);
1832         EXP_MD_COUNTER_INCREMENT(exp, getstatus);
1833         rc = MDP(exp->exp_obd, getstatus)(exp, fid, pc);
1834         RETURN(rc);
1835 }
1836
1837 static inline int md_getattr(struct obd_export *exp, const struct lu_fid *fid,
1838                              struct obd_capa *oc, obd_valid valid, int ea_size,
1839                              struct ptlrpc_request **request)
1840 {
1841         int rc;
1842         ENTRY;
1843         EXP_CHECK_MD_OP(exp, getattr);
1844         EXP_MD_COUNTER_INCREMENT(exp, getattr);
1845         rc = MDP(exp->exp_obd, getattr)(exp, fid, oc, valid,
1846                                         ea_size, request);
1847         RETURN(rc);
1848 }
1849
1850 static inline int md_change_cbdata(struct obd_export *exp,
1851                                    const struct lu_fid *fid,
1852                                    ldlm_iterator_t it, void *data)
1853 {
1854         int rc;
1855         ENTRY;
1856         EXP_CHECK_MD_OP(exp, change_cbdata);
1857         EXP_MD_COUNTER_INCREMENT(exp, change_cbdata);
1858         rc = MDP(exp->exp_obd, change_cbdata)(exp, fid, it, data);
1859         RETURN(rc);
1860 }
1861
1862 static inline int md_close(struct obd_export *exp, struct md_op_data *op_data,
1863                            struct md_open_data *mod,
1864                            struct ptlrpc_request **request)
1865 {
1866         int rc;
1867         ENTRY;
1868         EXP_CHECK_MD_OP(exp, close);
1869         EXP_MD_COUNTER_INCREMENT(exp, close);
1870         rc = MDP(exp->exp_obd, close)(exp, op_data, mod, request);
1871         RETURN(rc);
1872 }
1873
1874 static inline int md_create(struct obd_export *exp, struct md_op_data *op_data,
1875                             const void *data, int datalen, int mode, __u32 uid,
1876                             __u32 gid, cfs_cap_t cap_effective, __u64 rdev,
1877                             struct ptlrpc_request **request)
1878 {
1879         int rc;
1880         ENTRY;
1881         EXP_CHECK_MD_OP(exp, create);
1882         EXP_MD_COUNTER_INCREMENT(exp, create);
1883         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1884                                        uid, gid, cap_effective, rdev, request);
1885         RETURN(rc);
1886 }
1887
1888 static inline int md_done_writing(struct obd_export *exp,
1889                                   struct md_op_data *op_data,
1890                                   struct md_open_data *mod)
1891 {
1892         int rc;
1893         ENTRY;
1894         EXP_CHECK_MD_OP(exp, done_writing);
1895         EXP_MD_COUNTER_INCREMENT(exp, done_writing);
1896         rc = MDP(exp->exp_obd, done_writing)(exp, op_data, mod);
1897         RETURN(rc);
1898 }
1899
1900 static inline int md_enqueue(struct obd_export *exp,
1901                              struct ldlm_enqueue_info *einfo,
1902                              struct lookup_intent *it,
1903                              struct md_op_data *op_data,
1904                              struct lustre_handle *lockh,
1905                              void *lmm, int lmmsize,
1906                              struct ptlrpc_request **req,
1907                              int extra_lock_flags)
1908 {
1909         int rc;
1910         ENTRY;
1911         EXP_CHECK_MD_OP(exp, enqueue);
1912         EXP_MD_COUNTER_INCREMENT(exp, enqueue);
1913         rc = MDP(exp->exp_obd, enqueue)(exp, einfo, it, op_data, lockh,
1914                                         lmm, lmmsize, req, extra_lock_flags);
1915         RETURN(rc);
1916 }
1917
1918 static inline int md_getattr_name(struct obd_export *exp,
1919                                   const struct lu_fid *fid, struct obd_capa *oc,
1920                                   const char *name, int namelen,
1921                                   obd_valid valid, int ea_size, __u32 suppgid,
1922                                   struct ptlrpc_request **request)
1923 {
1924         int rc;
1925         ENTRY;
1926         EXP_CHECK_MD_OP(exp, getattr_name);
1927         EXP_MD_COUNTER_INCREMENT(exp, getattr_name);
1928         rc = MDP(exp->exp_obd, getattr_name)(exp, fid, oc, name, namelen,
1929                                              valid, ea_size, suppgid, request);
1930         RETURN(rc);
1931 }
1932
1933 static inline int md_intent_lock(struct obd_export *exp,
1934                                  struct md_op_data *op_data, void *lmm,
1935                                  int lmmsize, struct lookup_intent *it,
1936                                  int flags, struct ptlrpc_request **reqp,
1937                                  ldlm_blocking_callback cb_blocking,
1938                                  int extra_lock_flags)
1939 {
1940         int rc;
1941         ENTRY;
1942         EXP_CHECK_MD_OP(exp, intent_lock);
1943         EXP_MD_COUNTER_INCREMENT(exp, intent_lock);
1944         rc = MDP(exp->exp_obd, intent_lock)(exp, op_data, lmm, lmmsize,
1945                                             it, flags, reqp, cb_blocking,
1946                                             extra_lock_flags);
1947         RETURN(rc);
1948 }
1949
1950 static inline int md_link(struct obd_export *exp, struct md_op_data *op_data,
1951                           struct ptlrpc_request **request)
1952 {
1953         int rc;
1954         ENTRY;
1955         EXP_CHECK_MD_OP(exp, link);
1956         EXP_MD_COUNTER_INCREMENT(exp, link);
1957         rc = MDP(exp->exp_obd, link)(exp, op_data, request);
1958         RETURN(rc);
1959 }
1960
1961 static inline int md_rename(struct obd_export *exp, struct md_op_data *op_data,
1962                             const char *old, int oldlen, const char *new,
1963                             int newlen, struct ptlrpc_request **request)
1964 {
1965         int rc;
1966         ENTRY;
1967         EXP_CHECK_MD_OP(exp, rename);
1968         EXP_MD_COUNTER_INCREMENT(exp, rename);
1969         rc = MDP(exp->exp_obd, rename)(exp, op_data, old, oldlen, new,
1970                                        newlen, request);
1971         RETURN(rc);
1972 }
1973
1974 static inline int md_is_subdir(struct obd_export *exp,
1975                                const struct lu_fid *pfid,
1976                                const struct lu_fid *cfid,
1977                                struct ptlrpc_request **request)
1978 {
1979         int rc;
1980         ENTRY;
1981         EXP_CHECK_MD_OP(exp, is_subdir);
1982         EXP_MD_COUNTER_INCREMENT(exp, is_subdir);
1983         rc = MDP(exp->exp_obd, is_subdir)(exp, pfid, cfid, request);
1984         RETURN(rc);
1985 }
1986
1987 static inline int md_setattr(struct obd_export *exp, struct md_op_data *op_data,
1988                              void *ea, int ealen, void *ea2, int ea2len,
1989                              struct ptlrpc_request **request,
1990                              struct md_open_data **mod)
1991 {
1992         int rc;
1993         ENTRY;
1994         EXP_CHECK_MD_OP(exp, setattr);
1995         EXP_MD_COUNTER_INCREMENT(exp, setattr);
1996         rc = MDP(exp->exp_obd, setattr)(exp, op_data, ea, ealen,
1997                                         ea2, ea2len, request, mod);
1998         RETURN(rc);
1999 }
2000
2001 static inline int md_sync(struct obd_export *exp, const struct lu_fid *fid,
2002                           struct obd_capa *oc, struct ptlrpc_request **request)
2003 {
2004         int rc;
2005         ENTRY;
2006         EXP_CHECK_MD_OP(exp, sync);
2007         EXP_MD_COUNTER_INCREMENT(exp, sync);
2008         rc = MDP(exp->exp_obd, sync)(exp, fid, oc, request);
2009         RETURN(rc);
2010 }
2011
2012 static inline int md_readpage(struct obd_export *exp, const struct lu_fid *fid,
2013                               struct obd_capa *oc, __u64 offset,
2014                               struct page *page,
2015                               struct ptlrpc_request **request)
2016 {
2017         int rc;
2018         ENTRY;
2019         EXP_CHECK_MD_OP(exp, readpage);
2020         EXP_MD_COUNTER_INCREMENT(exp, readpage);
2021         rc = MDP(exp->exp_obd, readpage)(exp, fid, oc, offset, page, request);
2022         RETURN(rc);
2023 }
2024
2025 static inline int md_unlink(struct obd_export *exp, struct md_op_data *op_data,
2026                             struct ptlrpc_request **request)
2027 {
2028         int rc;
2029         ENTRY;
2030         EXP_CHECK_MD_OP(exp, unlink);
2031         EXP_MD_COUNTER_INCREMENT(exp, unlink);
2032         rc = MDP(exp->exp_obd, unlink)(exp, op_data, request);
2033         RETURN(rc);
2034 }
2035
2036 static inline int md_get_lustre_md(struct obd_export *exp,
2037                                    struct ptlrpc_request *req,
2038                                    struct obd_export *dt_exp,
2039                                    struct obd_export *md_exp,
2040                                    struct lustre_md *md)
2041 {
2042         ENTRY;
2043         EXP_CHECK_MD_OP(exp, get_lustre_md);
2044         EXP_MD_COUNTER_INCREMENT(exp, get_lustre_md);
2045         RETURN(MDP(exp->exp_obd, get_lustre_md)(exp, req, dt_exp, md_exp, md));
2046 }
2047
2048 static inline int md_free_lustre_md(struct obd_export *exp,
2049                                     struct lustre_md *md)
2050 {
2051         ENTRY;
2052         EXP_CHECK_MD_OP(exp, free_lustre_md);
2053         EXP_MD_COUNTER_INCREMENT(exp, free_lustre_md);
2054         RETURN(MDP(exp->exp_obd, free_lustre_md)(exp, md));
2055 }
2056
2057 static inline int md_setxattr(struct obd_export *exp,
2058                               const struct lu_fid *fid, struct obd_capa *oc,
2059                               obd_valid valid, const char *name,
2060                               const char *input, int input_size,
2061                               int output_size, int flags, __u32 suppgid,
2062                               struct ptlrpc_request **request)
2063 {
2064         ENTRY;
2065         EXP_CHECK_MD_OP(exp, setxattr);
2066         EXP_MD_COUNTER_INCREMENT(exp, setxattr);
2067         RETURN(MDP(exp->exp_obd, setxattr)(exp, fid, oc, valid, name, input,
2068                                            input_size, output_size, flags,
2069                                            suppgid, request));
2070 }
2071
2072 static inline int md_getxattr(struct obd_export *exp,
2073                               const struct lu_fid *fid, struct obd_capa *oc,
2074                               obd_valid valid, const char *name,
2075                               const char *input, int input_size,
2076                               int output_size, int flags,
2077                               struct ptlrpc_request **request)
2078 {
2079         ENTRY;
2080         EXP_CHECK_MD_OP(exp, getxattr);
2081         EXP_MD_COUNTER_INCREMENT(exp, getxattr);
2082         RETURN(MDP(exp->exp_obd, getxattr)(exp, fid, oc, valid, name, input,
2083                                            input_size, output_size, flags,
2084                                            request));
2085 }
2086
2087 static inline int md_set_open_replay_data(struct obd_export *exp,
2088                                           struct obd_client_handle *och,
2089                                           struct ptlrpc_request *open_req)
2090 {
2091         ENTRY;
2092         EXP_CHECK_MD_OP(exp, set_open_replay_data);
2093         EXP_MD_COUNTER_INCREMENT(exp, set_open_replay_data);
2094         RETURN(MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req));
2095 }
2096
2097 static inline int md_clear_open_replay_data(struct obd_export *exp,
2098                                             struct obd_client_handle *och)
2099 {
2100         ENTRY;
2101         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
2102         EXP_MD_COUNTER_INCREMENT(exp, clear_open_replay_data);
2103         RETURN(MDP(exp->exp_obd, clear_open_replay_data)(exp, och));
2104 }
2105
2106 static inline int md_set_lock_data(struct obd_export *exp,
2107                                    __u64 *lockh, void *data)
2108 {
2109         ENTRY;
2110         EXP_CHECK_MD_OP(exp, set_lock_data);
2111         EXP_MD_COUNTER_INCREMENT(exp, set_lock_data);
2112         RETURN(MDP(exp->exp_obd, set_lock_data)(exp, lockh, data));
2113 }
2114
2115 static inline int md_cancel_unused(struct obd_export *exp,
2116                                    const struct lu_fid *fid,
2117                                    ldlm_policy_data_t *policy,
2118                                    ldlm_mode_t mode, int flags, void *opaque)
2119 {
2120         int rc;
2121         ENTRY;
2122
2123         EXP_CHECK_MD_OP(exp, cancel_unused);
2124         EXP_MD_COUNTER_INCREMENT(exp, cancel_unused);
2125
2126         rc = MDP(exp->exp_obd, cancel_unused)(exp, fid, policy, mode,
2127                                               flags, opaque);
2128         RETURN(rc);
2129 }
2130
2131 static inline ldlm_mode_t md_lock_match(struct obd_export *exp, int flags,
2132                                         const struct lu_fid *fid,
2133                                         ldlm_type_t type,
2134                                         ldlm_policy_data_t *policy,
2135                                         ldlm_mode_t mode,
2136                                         struct lustre_handle *lockh)
2137 {
2138         ENTRY;
2139         EXP_CHECK_MD_OP(exp, lock_match);
2140         EXP_MD_COUNTER_INCREMENT(exp, lock_match);
2141         RETURN(MDP(exp->exp_obd, lock_match)(exp, flags, fid, type,
2142                                              policy, mode, lockh));
2143 }
2144
2145 static inline int md_init_ea_size(struct obd_export *exp, int easize,
2146                                   int def_asize, int cookiesize)
2147 {
2148         ENTRY;
2149         EXP_CHECK_MD_OP(exp, init_ea_size);
2150         EXP_MD_COUNTER_INCREMENT(exp, init_ea_size);
2151         RETURN(MDP(exp->exp_obd, init_ea_size)(exp, easize, def_asize,
2152                                                cookiesize));
2153 }
2154
2155 static inline int md_get_remote_perm(struct obd_export *exp,
2156                                      const struct lu_fid *fid,
2157                                      struct obd_capa *oc, __u32 suppgid,
2158                                      struct ptlrpc_request **request)
2159 {
2160         ENTRY;
2161         EXP_CHECK_MD_OP(exp, get_remote_perm);
2162         EXP_MD_COUNTER_INCREMENT(exp, get_remote_perm);
2163         RETURN(MDP(exp->exp_obd, get_remote_perm)(exp, fid, oc, suppgid,
2164                                                   request));
2165 }
2166
2167 static inline int md_renew_capa(struct obd_export *exp, struct obd_capa *ocapa,
2168                                 renew_capa_cb_t cb)
2169 {
2170         int rc;
2171         ENTRY;
2172         EXP_CHECK_MD_OP(exp, renew_capa);
2173         EXP_MD_COUNTER_INCREMENT(exp, renew_capa);
2174         rc = MDP(exp->exp_obd, renew_capa)(exp, ocapa, cb);
2175         RETURN(rc);
2176 }
2177
2178 static inline int md_intent_getattr_async(struct obd_export *exp,
2179                                           struct md_enqueue_info *minfo,
2180                                           struct ldlm_enqueue_info *einfo)
2181 {
2182         int rc;
2183         ENTRY;
2184         EXP_CHECK_MD_OP(exp, intent_getattr_async);
2185         EXP_MD_COUNTER_INCREMENT(exp, intent_getattr_async);
2186         rc = MDP(exp->exp_obd, intent_getattr_async)(exp, minfo, einfo);
2187         RETURN(rc);
2188 }
2189
2190 static inline int md_revalidate_lock(struct obd_export *exp,
2191                                      struct lookup_intent *it,
2192                                      struct lu_fid *fid)
2193 {
2194         int rc;
2195         ENTRY;
2196         EXP_CHECK_MD_OP(exp, revalidate_lock);
2197         EXP_MD_COUNTER_INCREMENT(exp, revalidate_lock);
2198         rc = MDP(exp->exp_obd, revalidate_lock)(exp, it, fid);
2199         RETURN(rc);
2200 }
2201
2202
2203 /* OBD Metadata Support */
2204
2205 extern int obd_init_caches(void);
2206 extern void obd_cleanup_caches(void);
2207
2208 /* support routines */
2209 extern cfs_mem_cache_t *obdo_cachep;
2210
2211 #define OBDO_ALLOC(ptr)                                                       \
2212 do {                                                                          \
2213         OBD_SLAB_ALLOC_PTR((ptr), obdo_cachep);                               \
2214 } while(0)
2215
2216 #define OBDO_FREE(ptr)                                                        \
2217 do {                                                                          \
2218         OBD_SLAB_FREE_PTR((ptr), obdo_cachep);                                \
2219 } while(0)
2220
2221
2222 static inline void obdo2fid(struct obdo *oa, struct lu_fid *fid)
2223 {
2224         /* something here */
2225 }
2226
2227 static inline void fid2obdo(struct lu_fid *fid, struct obdo *oa)
2228 {
2229         /* something here */
2230 }
2231
2232 /* I'm as embarrassed about this as you are.
2233  *
2234  * <shaver> // XXX do not look into _superhack with remaining eye
2235  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
2236 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
2237
2238 /* sysctl.c */
2239 extern void obd_sysctl_init (void);
2240 extern void obd_sysctl_clean (void);
2241
2242 /* uuid.c  */
2243 typedef __u8 class_uuid_t[16];
2244 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
2245
2246 /* lustre_peer.c    */
2247 int lustre_uuid_to_peer(const char *uuid, lnet_nid_t *peer_nid, int index);
2248 int class_add_uuid(const char *uuid, __u64 nid);
2249 int class_del_uuid (const char *uuid);
2250 void class_init_uuidlist(void);
2251 void class_exit_uuidlist(void);
2252
2253 /* mea.c */
2254 int mea_name2idx(struct lmv_stripe_md *mea, const char *name, int namelen);
2255 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
2256
2257 /* prng.c */
2258 void ll_generate_random_uuid(class_uuid_t uuid_out);
2259
2260 #endif /* __LINUX_OBD_CLASS_H */