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  *  Copyright (C) 2001-2003 Cluster File Systems, Inc.
   5  *
   6  *   This file is part of Lustre, http://www.lustre.org.
   7  *
   8  *   Lustre is free software; you can redistribute it and/or
   9  *   modify it under the terms of version 2 of the GNU General Public
  10  *   License as published by the Free Software Foundation.
  11  *
  12  *   Lustre is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *   GNU General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU General Public License
  18  *   along with Lustre; if not, write to the Free Software
  19  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  *
  21  */
  22
  23 #ifndef __CLASS_OBD_H
  24 #define __CLASS_OBD_H
  25
  26 #include <obd_support.h>
  27 #include <lustre_import.h>
  28 #include <lustre_net.h>
  29 #include <obd.h>
  30 #include <lustre_lib.h>
  31 #include <lustre/lustre_idl.h>
  32 #include <lprocfs_status.h>
  33
  34 #if defined(__linux__)
  35 #include <linux/obd_class.h>
  36 #elif defined(__APPLE__)
  37 #include <darwin/obd_class.h>
  38 #elif defined(__WINNT__)
  39 #include <winnt/obd_class.h>
  40 #else
  41 #error Unsupported operating system.
  42 #endif
  43
  44 /* OBD Device Declarations */
  45 extern struct obd_device *obd_devs[MAX_OBD_DEVICES];
  46 extern spinlock_t obd_dev_lock;
  47
  48 /* OBD Operations Declarations */
  49 extern struct obd_device *class_conn2obd(struct lustre_handle *);
  50 extern struct obd_device *class_exp2obd(struct obd_export *);
  51
  52 /* genops.c */
  53 struct obd_export *class_conn2export(struct lustre_handle *);
  54 int class_register_type(struct obd_ops *ops, struct lprocfs_vars *,
  55                         const char *nm);
  56 int class_unregister_type(const char *nm);
  57
  58 struct obd_device *class_newdev(const char *type_name, const char *name);
  59 void class_release_dev(struct obd_device *obd);
  60
  61 int class_name2dev(const char *name);
  62 struct obd_device *class_name2obd(const char *name);
  63 int class_uuid2dev(struct obd_uuid *uuid);
  64 struct obd_device *class_uuid2obd(struct obd_uuid *uuid);
  65 void class_obd_list(void);
  66 struct obd_device * class_find_client_obd(struct obd_uuid *tgt_uuid,
  67                                           const char * typ_name,
  68                                           struct obd_uuid *grp_uuid);
  69 struct obd_device * class_find_client_notype(struct obd_uuid *tgt_uuid,
  70                                              struct obd_uuid *grp_uuid);
  71 struct obd_device * class_devices_in_group(struct obd_uuid *grp_uuid,
  72                                            int *next);
  73 struct obd_device * class_num2obd(int num);
  74
  75 int oig_init(struct obd_io_group **oig);
  76 int oig_add_one(struct obd_io_group *oig, struct oig_callback_context *occ);
  77 void oig_complete_one(struct obd_io_group *oig,
  78                       struct oig_callback_context *occ, int rc);
  79 void oig_release(struct obd_io_group *oig);
  80 int oig_wait(struct obd_io_group *oig);
  81
  82 char *obd_export_nid2str(struct obd_export *exp);
  83
  84 int obd_export_evict_by_nid(struct obd_device *obd, char *nid);
  85 int obd_export_evict_by_uuid(struct obd_device *obd, char *uuid);
  86
  87 /* obd_config.c */
  88 int class_process_config(struct lustre_cfg *lcfg);
  89 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
  90                              struct lustre_cfg *lcfg, void *data);
  91 int class_attach(struct lustre_cfg *lcfg);
  92 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
  93 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg);
  94 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg);
  95 struct obd_device *class_incref(struct obd_device *obd);
  96 void class_decref(struct obd_device *obd);
  97
  98 #define CFG_F_START     0x01   /* Set when we start updating from a log */
  99 #define CFG_F_MARKER    0x02   /* We are within a maker */
 100 #define CFG_F_SKIP      0x04   /* We should ignore this cfg command */
 101 #define CFG_F_COMPAT146 0x08   /* Using old-style log */
 102 #define CFG_F_EXCLUDE   0x10   /* OST exclusion list */
 103
 104 /* Passed as data param to class_config_parse_llog */
 105 struct config_llog_instance {
 106         char *              cfg_instance;
 107         struct super_block *cfg_sb;
 108         struct obd_uuid     cfg_uuid;
 109         int                 cfg_last_idx; /* for partial llog processing */
 110         int                 cfg_flags;
 111 };
 112 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
 113                             struct config_llog_instance *cfg);
 114 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
 115                            struct config_llog_instance *cfg);
 116
 117 /* list of active configuration logs  */
 118 struct config_llog_data {
 119         char               *cld_logname;
 120         struct ldlm_res_id  cld_resid;
 121         struct config_llog_instance cld_cfg;
 122         struct list_head    cld_list_chain;
 123         atomic_t            cld_refcount;
 124         struct obd_export  *cld_mgcexp;
 125         unsigned int        cld_stopping:1; /* we were told to stop watching */
 126         unsigned int        cld_lostlock:1; /* lock not requeued */
 127 };
 128
 129 struct lustre_profile {
 130         struct list_head lp_list;
 131         char * lp_profile;
 132         char * lp_osc;
 133         char * lp_mdc;
 134 };
 135
 136 struct lustre_profile *class_get_profile(char * prof);
 137 void class_del_profile(char *prof);
 138 void class_del_profiles(void);
 139
 140 #define class_export_rpc_get(exp)                                       \
 141 ({                                                                      \
 142         atomic_inc(&(exp)->exp_rpc_count);                              \
 143         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",    \
 144                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 145         class_export_get(exp);                                          \
 146 })
 147
 148 #define class_export_rpc_put(exp)                                       \
 149 ({                                                                      \
 150         atomic_dec(&(exp)->exp_rpc_count);                              \
 151         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",    \
 152                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 153         class_export_put(exp);                                          \
 154 })
 155
 156 /* genops.c */
 157 #define class_export_get(exp)                                                  \
 158 ({                                                                             \
 159         struct obd_export *exp_ = exp;                                         \
 160         atomic_inc(&exp_->exp_refcount);                                       \
 161         CDEBUG(D_INFO, "GETting export %p : new refcount %d\n", exp_,          \
 162                atomic_read(&exp_->exp_refcount));                              \
 163         exp_;                                                                  \
 164 })
 165
 166 #define class_export_put(exp)                                                  \
 167 do {                                                                           \
 168         LASSERT((exp) != NULL);                                                \
 169         CDEBUG(D_INFO, "PUTting export %p : new refcount %d\n", (exp),         \
 170                atomic_read(&(exp)->exp_refcount) - 1);                         \
 171         LASSERT(atomic_read(&(exp)->exp_refcount) > 0);                        \
 172         LASSERT(atomic_read(&(exp)->exp_refcount) < 0x5a5a5a);                 \
 173         __class_export_put(exp);                                               \
 174 } while (0)
 175
 176 void __class_export_put(struct obd_export *);
 177 struct obd_export *class_new_export(struct obd_device *obddev,
 178                                     struct obd_uuid *cluuid);
 179 void class_unlink_export(struct obd_export *exp);
 180
 181 struct obd_import *class_import_get(struct obd_import *);
 182 void class_import_put(struct obd_import *);
 183 struct obd_import *class_new_import(struct obd_device *obd);
 184 void class_destroy_import(struct obd_import *exp);
 185
 186 struct obd_type *class_search_type(const char *name);
 187 struct obd_type *class_get_type(const char *name);
 188 void class_put_type(struct obd_type *type);
 189 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 190                   struct obd_uuid *cluuid);
 191 int class_disconnect(struct obd_export *exp);
 192 void class_fail_export(struct obd_export *exp);
 193 void class_disconnect_exports(struct obd_device *obddev);
 194 void class_disconnect_stale_exports(struct obd_device *obddev);
 195 int class_manual_cleanup(struct obd_device *obd);
 196
 197 /* obdo.c */
 198 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_flag valid);
 199 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
 200
 201
 202 #define OBT(dev)        (dev)->obd_type
 203 #define OBP(dev, op)    (dev)->obd_type->typ_ops->o_ ## op
 204 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 205
 206 /* Ensure obd_setup: used for cleanup which must be called
 207    while obd is stopping */
 208 #define OBD_CHECK_DEV(obd)                                      \
 209 do {                                                            \
 210         if (!(obd)) {                                           \
 211                 CERROR("NULL device\n");                        \
 212                 RETURN(-ENODEV);                                \
 213         }                                                       \
 214 } while (0)
 215
 216 /* ensure obd_setup and !obd_stopping */
 217 #define OBD_CHECK_DEV_ACTIVE(obd)                               \
 218 do {                                                            \
 219         OBD_CHECK_DEV(obd);                                     \
 220         if (!(obd)->obd_set_up || (obd)->obd_stopping) {        \
 221                 CERROR("Device %d not setup\n",                 \
 222                        (obd)->obd_minor);                       \
 223                 RETURN(-ENODEV);                                \
 224         }                                                       \
 225 } while (0)
 226
 227
 228 #ifdef LPROCFS
 229 #define OBD_COUNTER_OFFSET(op)                                  \
 230         ((offsetof(struct obd_ops, o_ ## op) -                  \
 231           offsetof(struct obd_ops, o_iocontrol))                \
 232          / sizeof(((struct obd_ops *)(0))->o_iocontrol))
 233
 234 #define OBD_COUNTER_INCREMENT(obdx, op)                           \
 235         if ((obdx)->obd_stats != NULL) {                          \
 236                 unsigned int coffset;                             \
 237                 coffset = (unsigned int)((obdx)->obd_cntr_base) + \
 238                         OBD_COUNTER_OFFSET(op);                   \
 239                 LASSERT(coffset < (obdx)->obd_stats->ls_num);     \
 240                 lprocfs_counter_incr((obdx)->obd_stats, coffset); \
 241         }
 242
 243 #define EXP_COUNTER_INCREMENT(export, op)                                    \
 244         if ((export)->exp_obd->obd_stats != NULL) {                          \
 245                 unsigned int coffset;                                        \
 246                 coffset = (unsigned int)((export)->exp_obd->obd_cntr_base) + \
 247                         OBD_COUNTER_OFFSET(op);                              \
 248                 LASSERT(coffset < (export)->exp_obd->obd_stats->ls_num);     \
 249                 lprocfs_counter_incr((export)->exp_obd->obd_stats, coffset); \
 250                 if ((export)->exp_ops_stats != NULL)                         \
 251                         lprocfs_counter_incr(                                \
 252                                 (export)->exp_ops_stats, coffset);           \
 253         }
 254
 255 #else
 256 #define OBD_COUNTER_OFFSET(op)
 257 #define OBD_COUNTER_INCREMENT(obd, op)
 258 #define EXP_COUNTER_INCREMENT(exp, op);
 259 #endif
 260
 261 #define OBD_CHECK_OP(obd, op, err)                              \
 262 do {                                                            \
 263         if (!OBT(obd) || !OBP((obd), op)) {\
 264                 if (err)                                        \
 265                         CERROR("obd_" #op ": dev %d no operation\n",    \
 266                                obd->obd_minor);                         \
 267                 RETURN(err);                                    \
 268         }                                                       \
 269 } while (0)
 270
 271 #define EXP_CHECK_OP(exp, op)                                   \
 272 do {                                                            \
 273         if ((exp) == NULL) {                                    \
 274                 CERROR("obd_" #op ": NULL export\n");           \
 275                 RETURN(-ENODEV);                                \
 276         }                                                       \
 277         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 278                 CERROR("obd_" #op ": cleaned up obd\n");        \
 279                 RETURN(-EOPNOTSUPP);                            \
 280         }                                                       \
 281         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 282                 CERROR("obd_" #op ": dev %d no operation\n",    \
 283                        (exp)->exp_obd->obd_minor);              \
 284                 RETURN(-EOPNOTSUPP);                            \
 285         }                                                       \
 286 } while (0)
 287
 288 #define CTXT_CHECK_OP(ctxt, op, err)                                         \
 289 do {                                                            \
 290         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {                     \
 291                 if (err)                                        \
 292                         CERROR("lop_" #op ": dev %d no operation\n",    \
 293                                ctxt->loc_obd->obd_minor);                         \
 294                 RETURN(err);                                    \
 295         }                                                       \
 296 } while (0)
 297
 298 static inline int class_devno_max(void)
 299 {
 300         return MAX_OBD_DEVICES;
 301 }
 302
 303 static inline int obd_get_info(struct obd_export *exp, __u32 keylen,
 304                                void *key, __u32 *vallen, void *val)
 305 {
 306         int rc;
 307         ENTRY;
 308
 309         EXP_CHECK_OP(exp, get_info);
 310         EXP_COUNTER_INCREMENT(exp, get_info);
 311
 312         rc = OBP(exp->exp_obd, get_info)(exp, keylen, key, vallen, val);
 313         RETURN(rc);
 314 }
 315
 316 static inline int obd_set_info_async(struct obd_export *exp, obd_count keylen,
 317                                      void *key, obd_count vallen, void *val,
 318                                      struct ptlrpc_request_set *set)
 319 {
 320         int rc;
 321         ENTRY;
 322
 323         EXP_CHECK_OP(exp, set_info_async);
 324         EXP_COUNTER_INCREMENT(exp, set_info_async);
 325
 326         rc = OBP(exp->exp_obd, set_info_async)(exp, keylen, key, vallen, val,
 327                                                set);
 328         RETURN(rc);
 329 }
 330
 331 static inline int obd_setup(struct obd_device *obd, int datalen, void *data)
 332 {
 333         int rc;
 334         ENTRY;
 335
 336         OBD_CHECK_OP(obd, setup, -EOPNOTSUPP);
 337         OBD_COUNTER_INCREMENT(obd, setup);
 338
 339         rc = OBP(obd, setup)(obd, datalen, data);
 340         RETURN(rc);
 341 }
 342
 343 static inline int obd_precleanup(struct obd_device *obd,
 344                                  enum obd_cleanup_stage cleanup_stage)
 345 {
 346         int rc;
 347         ENTRY;
 348
 349         OBD_CHECK_OP(obd, precleanup, 0);
 350         OBD_COUNTER_INCREMENT(obd, precleanup);
 351
 352         rc = OBP(obd, precleanup)(obd, cleanup_stage);
 353         RETURN(rc);
 354 }
 355
 356 static inline int obd_cleanup(struct obd_device *obd)
 357 {
 358         int rc;
 359         ENTRY;
 360
 361         OBD_CHECK_DEV(obd);
 362         OBD_CHECK_OP(obd, cleanup, 0);
 363         OBD_COUNTER_INCREMENT(obd, cleanup);
 364
 365         rc = OBP(obd, cleanup)(obd);
 366         RETURN(rc);
 367 }
 368
 369 static inline int
 370 obd_process_config(struct obd_device *obd, int datalen, void *data)
 371 {
 372         int rc;
 373         ENTRY;
 374
 375         OBD_CHECK_OP(obd, process_config, -EOPNOTSUPP);
 376         OBD_COUNTER_INCREMENT(obd, process_config);
 377
 378         rc = OBP(obd, process_config)(obd, datalen, data);
 379         RETURN(rc);
 380 }
 381
 382 /* Pack an in-memory MD struct for storage on disk.
 383  * Returns +ve size of packed MD (0 for free), or -ve error.
 384  *
 385  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 386  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 387  * If @*disk_tgt == NULL, it will be allocated
 388  */
 389 static inline int obd_packmd(struct obd_export *exp,
 390                              struct lov_mds_md **disk_tgt,
 391                              struct lov_stripe_md *mem_src)
 392 {
 393         int rc;
 394         ENTRY;
 395
 396         EXP_CHECK_OP(exp, packmd);
 397         EXP_COUNTER_INCREMENT(exp, packmd);
 398
 399         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 400         RETURN(rc);
 401 }
 402
 403 static inline int obd_size_diskmd(struct obd_export *exp,
 404                                   struct lov_stripe_md *mem_src)
 405 {
 406         return obd_packmd(exp, NULL, mem_src);
 407 }
 408
 409 /* helper functions */
 410 static inline int obd_alloc_diskmd(struct obd_export *exp,
 411                                    struct lov_mds_md **disk_tgt)
 412 {
 413         LASSERT(disk_tgt);
 414         LASSERT(*disk_tgt == NULL);
 415         return obd_packmd(exp, disk_tgt, NULL);
 416 }
 417
 418 static inline int obd_free_diskmd(struct obd_export *exp,
 419                                   struct lov_mds_md **disk_tgt)
 420 {
 421         LASSERT(disk_tgt);
 422         LASSERT(*disk_tgt);
 423         return obd_packmd(exp, disk_tgt, NULL);
 424 }
 425
 426 /* Unpack an MD struct from disk to in-memory format.
 427  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 428  *
 429  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 430  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 431  * If @*mem_tgt == NULL, it will be allocated
 432  */
 433 static inline int obd_unpackmd(struct obd_export *exp,
 434                                struct lov_stripe_md **mem_tgt,
 435                                struct lov_mds_md *disk_src,
 436                                int disk_len)
 437 {
 438         int rc;
 439         ENTRY;
 440
 441         EXP_CHECK_OP(exp, unpackmd);
 442         EXP_COUNTER_INCREMENT(exp, unpackmd);
 443
 444         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 445         RETURN(rc);
 446 }
 447
 448 /* helper functions */
 449 static inline int obd_alloc_memmd(struct obd_export *exp,
 450                                   struct lov_stripe_md **mem_tgt)
 451 {
 452         LASSERT(mem_tgt);
 453         LASSERT(*mem_tgt == NULL);
 454         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 455 }
 456
 457 static inline int obd_free_memmd(struct obd_export *exp,
 458                                  struct lov_stripe_md **mem_tgt)
 459 {
 460         LASSERT(mem_tgt);
 461         LASSERT(*mem_tgt);
 462         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 463 }
 464
 465 static inline int obd_checkmd(struct obd_export *exp,
 466                               struct obd_export *md_exp,
 467                               struct lov_stripe_md *mem_tgt)
 468 {
 469         int rc;
 470         ENTRY;
 471
 472         EXP_CHECK_OP(exp, checkmd);
 473         EXP_COUNTER_INCREMENT(exp, checkmd);
 474
 475         rc = OBP(exp->exp_obd, checkmd)(exp, md_exp, mem_tgt);
 476         RETURN(rc);
 477 }
 478
 479 static inline int obd_create(struct obd_export *exp, struct obdo *obdo,
 480                              struct lov_stripe_md **ea,
 481                              struct obd_trans_info *oti)
 482 {
 483         int rc;
 484         ENTRY;
 485
 486         EXP_CHECK_OP(exp, create);
 487         EXP_COUNTER_INCREMENT(exp, create);
 488
 489         rc = OBP(exp->exp_obd, create)(exp, obdo, ea, oti);
 490         RETURN(rc);
 491 }
 492
 493 static inline int obd_destroy(struct obd_export *exp, struct obdo *obdo,
 494                               struct lov_stripe_md *ea,
 495                               struct obd_trans_info *oti,
 496                               struct obd_export *md_exp)
 497 {
 498         int rc;
 499         ENTRY;
 500
 501         EXP_CHECK_OP(exp, destroy);
 502         EXP_COUNTER_INCREMENT(exp, destroy);
 503
 504         rc = OBP(exp->exp_obd, destroy)(exp, obdo, ea, oti, md_exp);
 505         RETURN(rc);
 506 }
 507
 508 static inline int obd_getattr(struct obd_export *exp, struct obd_info *oinfo)
 509 {
 510         int rc;
 511         ENTRY;
 512
 513         EXP_CHECK_OP(exp, getattr);
 514         EXP_COUNTER_INCREMENT(exp, getattr);
 515
 516         rc = OBP(exp->exp_obd, getattr)(exp, oinfo);
 517         RETURN(rc);
 518 }
 519
 520 static inline int obd_getattr_async(struct obd_export *exp,
 521                                     struct obd_info *oinfo,
 522                                     struct ptlrpc_request_set *set)
 523 {
 524         int rc;
 525         ENTRY;
 526
 527         EXP_CHECK_OP(exp, getattr_async);
 528         EXP_COUNTER_INCREMENT(exp, getattr_async);
 529
 530         rc = OBP(exp->exp_obd, getattr_async)(exp, oinfo, set);
 531         RETURN(rc);
 532 }
 533
 534 static inline int obd_setattr(struct obd_export *exp, struct obd_info *oinfo,
 535                               struct obd_trans_info *oti)
 536 {
 537         int rc;
 538         ENTRY;
 539
 540         EXP_CHECK_OP(exp, setattr);
 541         EXP_COUNTER_INCREMENT(exp, setattr);
 542
 543         rc = OBP(exp->exp_obd, setattr)(exp, oinfo, oti);
 544         RETURN(rc);
 545 }
 546
 547 /* This performs all the requests set init/wait/destroy actions. */
 548 static inline int obd_setattr_rqset(struct obd_export *exp,
 549                                     struct obd_info *oinfo,
 550                                     struct obd_trans_info *oti)
 551 {
 552         struct ptlrpc_request_set *set = NULL;
 553         int rc;
 554         ENTRY;
 555
 556         EXP_CHECK_OP(exp, setattr_async);
 557         EXP_COUNTER_INCREMENT(exp, setattr_async);
 558
 559         set =  ptlrpc_prep_set();
 560         if (set == NULL)
 561                 RETURN(-ENOMEM);
 562
 563         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 564         if (rc == 0)
 565                 rc = ptlrpc_set_wait(set);
 566         ptlrpc_set_destroy(set);
 567         RETURN(rc);
 568 }
 569
 570 /* This adds all the requests into @set if @set != NULL, otherwise
 571    all requests are sent asynchronously without waiting for response. */
 572 static inline int obd_setattr_async(struct obd_export *exp,
 573                                     struct obd_info *oinfo,
 574                                     struct obd_trans_info *oti,
 575                                     struct ptlrpc_request_set *set)
 576 {
 577         int rc;
 578         ENTRY;
 579
 580         EXP_CHECK_OP(exp, setattr_async);
 581         EXP_COUNTER_INCREMENT(exp, setattr_async);
 582
 583         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 584         RETURN(rc);
 585 }
 586
 587 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 588                                int priority)
 589 {
 590         struct obd_device *obd = imp->imp_obd;
 591         int rc;
 592         ENTRY;
 593
 594         OBD_CHECK_DEV_ACTIVE(obd);
 595         OBD_CHECK_OP(obd, add_conn, -EOPNOTSUPP);
 596         OBD_COUNTER_INCREMENT(obd, add_conn);
 597
 598         rc = OBP(obd, add_conn)(imp, uuid, priority);
 599         RETURN(rc);
 600 }
 601
 602 static inline int obd_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
 603 {
 604         struct obd_device *obd = imp->imp_obd;
 605         int rc;
 606         ENTRY;
 607
 608         OBD_CHECK_DEV_ACTIVE(obd);
 609         OBD_CHECK_OP(obd, del_conn, -EOPNOTSUPP);
 610         OBD_COUNTER_INCREMENT(obd, del_conn);
 611
 612         rc = OBP(obd, del_conn)(imp, uuid);
 613         RETURN(rc);
 614 }
 615
 616 static inline int obd_connect(struct lustre_handle *conn,struct obd_device *obd,
 617                               struct obd_uuid *cluuid,
 618                               struct obd_connect_data *d)
 619 {
 620         int rc;
 621         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition check */
 622         ENTRY;
 623
 624         OBD_CHECK_DEV_ACTIVE(obd);
 625         OBD_CHECK_OP(obd, connect, -EOPNOTSUPP);
 626         OBD_COUNTER_INCREMENT(obd, connect);
 627
 628         rc = OBP(obd, connect)(conn, obd, cluuid, d);
 629         /* check that only subset is granted */
 630         LASSERT(ergo(d != NULL,
 631                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 632         RETURN(rc);
 633 }
 634
 635 static inline int obd_reconnect(struct obd_export *exp,
 636                                 struct obd_device *obd,
 637                                 struct obd_uuid *cluuid,
 638                                 struct obd_connect_data *d)
 639 {
 640         int rc;
 641         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition check */
 642         ENTRY;
 643
 644         OBD_CHECK_DEV_ACTIVE(obd);
 645         OBD_CHECK_OP(obd, reconnect, 0);
 646         OBD_COUNTER_INCREMENT(obd, reconnect);
 647
 648         rc = OBP(obd, reconnect)(exp, obd, cluuid, d);
 649         /* check that only subset is granted */
 650         LASSERT(ergo(d != NULL,
 651                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 652         RETURN(rc);
 653 }
 654
 655 static inline int obd_disconnect(struct obd_export *exp)
 656 {
 657         int rc;
 658         ENTRY;
 659
 660         EXP_CHECK_OP(exp, disconnect);
 661         EXP_COUNTER_INCREMENT(exp, disconnect);
 662
 663         rc = OBP(exp->exp_obd, disconnect)(exp);
 664         RETURN(rc);
 665 }
 666
 667 static inline int obd_ping(struct obd_export *exp)
 668 {
 669         int rc;
 670         ENTRY;
 671
 672         OBD_CHECK_OP(exp->exp_obd, ping, 0);
 673         EXP_COUNTER_INCREMENT(exp, ping);
 674
 675         rc = OBP(exp->exp_obd, ping)(exp);
 676         RETURN(rc);
 677 }
 678
 679 static inline int obd_init_export(struct obd_export *exp)
 680 {
 681         int rc = 0;
 682
 683         ENTRY;
 684         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 685             OBP((exp)->exp_obd, init_export))
 686                 rc = OBP(exp->exp_obd, init_export)(exp);
 687         RETURN(rc);
 688 }
 689
 690 static inline int obd_destroy_export(struct obd_export *exp)
 691 {
 692         ENTRY;
 693         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 694             OBP((exp)->exp_obd, destroy_export))
 695                 OBP(exp->exp_obd, destroy_export)(exp);
 696         RETURN(0);
 697 }
 698
 699 static inline int obd_extent_calc(struct obd_export *exp,
 700                                   struct lov_stripe_md *md,
 701                                   int cmd, obd_off *offset)
 702 {
 703         int rc;
 704         ENTRY;
 705         EXP_CHECK_OP(exp, extent_calc);
 706         rc = OBP(exp->exp_obd, extent_calc)(exp, md, cmd, offset);
 707         RETURN(rc);
 708 }
 709
 710 static inline struct dentry *
 711 obd_lvfs_fid2dentry(struct obd_export *exp, __u64 id_ino, __u32 gen, __u64 gr)
 712 {
 713         LASSERT(exp->exp_obd);
 714
 715         return lvfs_fid2dentry(&exp->exp_obd->obd_lvfs_ctxt, id_ino, gen, gr,
 716                                exp->exp_obd);
 717 }
 718
 719 #ifndef time_before
 720 #define time_before(t1, t2) ((long)t2 - (long)t1 > 0)
 721 #endif
 722
 723 /* @max_age is the oldest time in jiffies that we accept using a cached data.
 724  * If the cache is older than @max_age we will get a new value from the
 725  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
 726 static inline int obd_statfs_async(struct obd_device *obd,
 727                                    struct obd_info *oinfo,
 728                                    __u64 max_age,
 729                                    struct ptlrpc_request_set *rqset)
 730 {
 731         int rc = 0;
 732         ENTRY;
 733
 734         if (obd == NULL)
 735                 RETURN(-EINVAL);
 736
 737         OBD_CHECK_OP(obd, statfs, -EOPNOTSUPP);
 738         OBD_COUNTER_INCREMENT(obd, statfs);
 739
 740         CDEBUG(D_SUPER, "%s: osfs %p age "LPU64", max_age "LPU64"\n",
 741                obd->obd_name, &obd->obd_osfs, obd->obd_osfs_age, max_age);
 742         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
 743                 rc = OBP(obd, statfs_async)(obd, oinfo, max_age, rqset);
 744         } else {
 745                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
 746                        " objects "LPU64"/"LPU64"\n",
 747                        obd->obd_name, &obd->obd_osfs,
 748                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
 749                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
 750                 spin_lock(&obd->obd_osfs_lock);
 751                 memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
 752                 spin_unlock(&obd->obd_osfs_lock);
 753                 if (oinfo->oi_cb_up)
 754                         oinfo->oi_cb_up(oinfo, 0);
 755         }
 756         RETURN(rc);
 757 }
 758
 759 static inline int obd_statfs_rqset(struct obd_device *obd,
 760                                    struct obd_statfs *osfs, __u64 max_age)
 761 {
 762         struct ptlrpc_request_set *set = NULL;
 763         struct obd_info oinfo = { { { 0 } } };
 764         int rc = 0;
 765         ENTRY;
 766
 767         set = ptlrpc_prep_set();
 768         if (set == NULL)
 769                 RETURN(-ENOMEM);
 770
 771         oinfo.oi_osfs = osfs;
 772         rc = obd_statfs_async(obd, &oinfo, max_age, set);
 773         if (rc == 0)
 774                 rc = ptlrpc_set_wait(set);
 775         ptlrpc_set_destroy(set);
 776         RETURN(rc);
 777 }
 778
 779 /* @max_age is the oldest time in jiffies that we accept using a cached data.
 780  * If the cache is older than @max_age we will get a new value from the
 781  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
 782 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
 783                              __u64 max_age)
 784 {
 785         int rc = 0;
 786         ENTRY;
 787
 788         if (obd == NULL)
 789                 RETURN(-EINVAL);
 790
 791         OBD_CHECK_OP(obd, statfs, -EOPNOTSUPP);
 792         OBD_COUNTER_INCREMENT(obd, statfs);
 793
 794         CDEBUG(D_SUPER, "osfs "LPU64", max_age "LPU64"\n",
 795                obd->obd_osfs_age, max_age);
 796         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
 797                 rc = OBP(obd, statfs)(obd, osfs, max_age);
 798                 if (rc == 0) {
 799                         spin_lock(&obd->obd_osfs_lock);
 800                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
 801                         obd->obd_osfs_age = cfs_time_current_64();
 802                         spin_unlock(&obd->obd_osfs_lock);
 803                 }
 804         } else {
 805                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
 806                        " objects "LPU64"/"LPU64"\n",
 807                        obd->obd_name, &obd->obd_osfs,
 808                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
 809                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
 810                 spin_lock(&obd->obd_osfs_lock);
 811                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
 812                 spin_unlock(&obd->obd_osfs_lock);
 813         }
 814         RETURN(rc);
 815 }
 816
 817 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
 818                            struct lov_stripe_md *ea, obd_size start,
 819                            obd_size end)
 820 {
 821         int rc;
 822         ENTRY;
 823
 824         OBD_CHECK_OP(exp->exp_obd, sync, -EOPNOTSUPP);
 825         EXP_COUNTER_INCREMENT(exp, sync);
 826
 827         rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end);
 828         RETURN(rc);
 829 }
 830
 831 static inline int obd_punch_rqset(struct obd_export *exp,
 832                                   struct obd_info *oinfo,
 833                                   struct obd_trans_info *oti)
 834 {
 835         struct ptlrpc_request_set *set = NULL;
 836         int rc;
 837         ENTRY;
 838
 839         EXP_CHECK_OP(exp, punch);
 840         EXP_COUNTER_INCREMENT(exp, punch);
 841
 842         set =  ptlrpc_prep_set();
 843         if (set == NULL)
 844                 RETURN(-ENOMEM);
 845
 846         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, set);
 847         if (rc == 0)
 848                 rc = ptlrpc_set_wait(set);
 849         ptlrpc_set_destroy(set);
 850         RETURN(rc);
 851 }
 852
 853 static inline int obd_punch(struct obd_export *exp, struct obd_info *oinfo,
 854                             struct obd_trans_info *oti,
 855                             struct ptlrpc_request_set *rqset)
 856 {
 857         int rc;
 858         ENTRY;
 859
 860         EXP_CHECK_OP(exp, punch);
 861         EXP_COUNTER_INCREMENT(exp, punch);
 862
 863         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, rqset);
 864         RETURN(rc);
 865 }
 866
 867 static inline int obd_brw(int cmd, struct obd_export *exp,
 868                           struct obd_info *oinfo, obd_count oa_bufs,
 869                           struct brw_page *pg, struct obd_trans_info *oti)
 870 {
 871         int rc;
 872         ENTRY;
 873
 874         EXP_CHECK_OP(exp, brw);
 875         EXP_COUNTER_INCREMENT(exp, brw);
 876
 877         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
 878                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
 879                        "or OBD_BRW_CHECK\n");
 880                 LBUG();
 881         }
 882
 883         rc = OBP(exp->exp_obd, brw)(cmd, exp, oinfo, oa_bufs, pg, oti);
 884         RETURN(rc);
 885 }
 886
 887 static inline int obd_brw_async(int cmd, struct obd_export *exp,
 888                                 struct obd_info *oinfo, obd_count oa_bufs,
 889                                 struct brw_page *pg, struct obd_trans_info *oti,
 890                                 struct ptlrpc_request_set *set)
 891 {
 892         int rc;
 893         ENTRY;
 894
 895         EXP_CHECK_OP(exp, brw_async);
 896         EXP_COUNTER_INCREMENT(exp, brw_async);
 897
 898         if (!(cmd & OBD_BRW_RWMASK)) {
 899                 CERROR("obd_brw: cmd must be OBD_BRW_READ or OBD_BRW_WRITE\n");
 900                 LBUG();
 901         }
 902
 903         rc = OBP(exp->exp_obd, brw_async)(cmd, exp, oinfo, oa_bufs, pg,oti,set);
 904         RETURN(rc);
 905 }
 906
 907 static inline int obd_brw_rqset(int cmd, struct obd_export *exp,
 908                                 struct obdo *oa, struct lov_stripe_md *lsm,
 909                                 obd_count oa_bufs, struct brw_page *pg,
 910                                 struct obd_trans_info *oti)
 911 {
 912         struct ptlrpc_request_set *set = NULL;
 913         struct obd_info oinfo = { { { 0 } } };
 914         int rc = 0;
 915         ENTRY;
 916
 917         set =  ptlrpc_prep_set();
 918         if (set == NULL)
 919                 RETURN(-ENOMEM);
 920
 921         oinfo.oi_oa = oa;
 922         oinfo.oi_md = lsm;
 923         rc = obd_brw_async(cmd, exp, &oinfo, oa_bufs, pg, oti, set);
 924         if (rc == 0) {
 925                 rc = ptlrpc_set_wait(set);
 926                 if (rc)
 927                         CERROR("error from callback: rc = %d\n", rc);
 928         } else {
 929                 CDEBUG(rc == -ENOSPC ? D_INODE : D_ERROR,
 930                        "error from obd_brw_async: rc = %d\n", rc);
 931         }
 932         ptlrpc_set_destroy(set);
 933         RETURN(rc);
 934 }
 935
 936 static inline  int obd_prep_async_page(struct obd_export *exp,
 937                                        struct lov_stripe_md *lsm,
 938                                        struct lov_oinfo *loi,
 939                                        cfs_page_t *page, obd_off offset,
 940                                        struct obd_async_page_ops *ops,
 941                                        void *data, void **res)
 942 {
 943         int ret;
 944         ENTRY;
 945
 946         OBD_CHECK_OP(exp->exp_obd, prep_async_page, -EOPNOTSUPP);
 947         EXP_COUNTER_INCREMENT(exp, prep_async_page);
 948
 949         ret = OBP(exp->exp_obd, prep_async_page)(exp, lsm, loi, page, offset,
 950                                                  ops, data, res);
 951         RETURN(ret);
 952 }
 953
 954 static inline int obd_queue_async_io(struct obd_export *exp,
 955                                      struct lov_stripe_md *lsm,
 956                                      struct lov_oinfo *loi, void *cookie,
 957                                      int cmd, obd_off off, int count,
 958                                      obd_flag brw_flags, obd_flag async_flags)
 959 {
 960         int rc;
 961         ENTRY;
 962
 963         OBD_CHECK_OP(exp->exp_obd, queue_async_io, -EOPNOTSUPP);
 964         EXP_COUNTER_INCREMENT(exp, queue_async_io);
 965         LASSERT(cmd & OBD_BRW_RWMASK);
 966
 967         rc = OBP(exp->exp_obd, queue_async_io)(exp, lsm, loi, cookie, cmd, off,
 968                                                count, brw_flags, async_flags);
 969         RETURN(rc);
 970 }
 971
 972 static inline int obd_set_async_flags(struct obd_export *exp,
 973                                       struct lov_stripe_md *lsm,
 974                                       struct lov_oinfo *loi, void *cookie,
 975                                       obd_flag async_flags)
 976 {
 977         int rc;
 978         ENTRY;
 979
 980         OBD_CHECK_OP(exp->exp_obd, set_async_flags, -EOPNOTSUPP);
 981         EXP_COUNTER_INCREMENT(exp, set_async_flags);
 982
 983         rc = OBP(exp->exp_obd, set_async_flags)(exp, lsm, loi, cookie,
 984                                                 async_flags);
 985         RETURN(rc);
 986 }
 987
 988 static inline int obd_queue_group_io(struct obd_export *exp,
 989                                      struct lov_stripe_md *lsm,
 990                                      struct lov_oinfo *loi,
 991                                      struct obd_io_group *oig,
 992                                      void *cookie, int cmd, obd_off off,
 993                                      int count, obd_flag brw_flags,
 994                                      obd_flag async_flags)
 995 {
 996         int rc;
 997         ENTRY;
 998
 999         OBD_CHECK_OP(exp->exp_obd, queue_group_io, -EOPNOTSUPP);
1000         EXP_COUNTER_INCREMENT(exp, queue_group_io);
1001         LASSERT(cmd & OBD_BRW_RWMASK);
1002
1003         rc = OBP(exp->exp_obd, queue_group_io)(exp, lsm, loi, oig, cookie,
1004                                                cmd, off, count, brw_flags,
1005                                                async_flags);
1006         RETURN(rc);
1007 }
1008
1009 static inline int obd_trigger_group_io(struct obd_export *exp,
1010                                        struct lov_stripe_md *lsm,
1011                                        struct lov_oinfo *loi,
1012                                        struct obd_io_group *oig)
1013 {
1014         int rc;
1015         ENTRY;
1016
1017         OBD_CHECK_OP(exp->exp_obd, trigger_group_io, -EOPNOTSUPP);
1018         EXP_COUNTER_INCREMENT(exp, trigger_group_io);
1019
1020         rc = OBP(exp->exp_obd, trigger_group_io)(exp, lsm, loi, oig);
1021         RETURN(rc);
1022 }
1023
1024 static inline int obd_teardown_async_page(struct obd_export *exp,
1025                                           struct lov_stripe_md *lsm,
1026                                           struct lov_oinfo *loi, void *cookie)
1027 {
1028         int rc;
1029         ENTRY;
1030
1031         OBD_CHECK_OP(exp->exp_obd, teardown_async_page, -EOPNOTSUPP);
1032         EXP_COUNTER_INCREMENT(exp, teardown_async_page);
1033
1034         rc = OBP(exp->exp_obd, teardown_async_page)(exp, lsm, loi, cookie);
1035         RETURN(rc);
1036 }
1037
1038 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
1039                              int objcount, struct obd_ioobj *obj,
1040                              int niocount, struct niobuf_remote *remote,
1041                              struct niobuf_local *local,
1042                              struct obd_trans_info *oti)
1043 {
1044         int rc;
1045         ENTRY;
1046
1047         OBD_CHECK_OP(exp->exp_obd, preprw, -EOPNOTSUPP);
1048         EXP_COUNTER_INCREMENT(exp, preprw);
1049
1050         rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, niocount,
1051                                        remote, local, oti);
1052         RETURN(rc);
1053 }
1054
1055 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
1056                                int objcount, struct obd_ioobj *obj,
1057                                int niocount, struct niobuf_local *local,
1058                                struct obd_trans_info *oti, int rc)
1059 {
1060         ENTRY;
1061
1062         OBD_CHECK_OP(exp->exp_obd, commitrw, -EOPNOTSUPP);
1063         EXP_COUNTER_INCREMENT(exp, commitrw);
1064
1065         rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj, niocount,
1066                                          local, oti, rc);
1067         RETURN(rc);
1068 }
1069
1070 static inline int obd_merge_lvb(struct obd_export *exp,
1071                                 struct lov_stripe_md *lsm,
1072                                 struct ost_lvb *lvb, int kms_only)
1073 {
1074         int rc;
1075         ENTRY;
1076
1077         OBD_CHECK_OP(exp->exp_obd, merge_lvb, -EOPNOTSUPP);
1078         EXP_COUNTER_INCREMENT(exp, merge_lvb);
1079
1080         rc = OBP(exp->exp_obd, merge_lvb)(exp, lsm, lvb, kms_only);
1081         RETURN(rc);
1082 }
1083
1084 static inline int obd_adjust_kms(struct obd_export *exp,
1085                                  struct lov_stripe_md *lsm, obd_off size,
1086                                  int shrink)
1087 {
1088         int rc;
1089         ENTRY;
1090
1091         OBD_CHECK_OP(exp->exp_obd, adjust_kms, -EOPNOTSUPP);
1092         EXP_COUNTER_INCREMENT(exp, adjust_kms);
1093
1094         rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
1095         RETURN(rc);
1096 }
1097
1098 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1099                                 int len, void *karg, void *uarg)
1100 {
1101         int rc;
1102         ENTRY;
1103
1104         EXP_CHECK_OP(exp, iocontrol);
1105         EXP_COUNTER_INCREMENT(exp, iocontrol);
1106
1107         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1108         RETURN(rc);
1109 }
1110
1111 static inline int obd_enqueue_rqset(struct obd_export *exp,
1112                                     struct obd_info *oinfo,
1113                                     struct obd_enqueue_info *einfo)
1114 {
1115         int rc;
1116         ENTRY;
1117
1118         EXP_CHECK_OP(exp, enqueue);
1119         EXP_COUNTER_INCREMENT(exp, enqueue);
1120
1121         einfo->ei_rqset =  ptlrpc_prep_set();
1122         if (einfo->ei_rqset == NULL)
1123                 RETURN(-ENOMEM);
1124
1125         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo);
1126         if (rc == 0)
1127                 rc = ptlrpc_set_wait(einfo->ei_rqset);
1128         ptlrpc_set_destroy(einfo->ei_rqset);
1129         einfo->ei_rqset = NULL;
1130
1131         RETURN(rc);
1132 }
1133
1134 static inline int obd_enqueue(struct obd_export *exp,
1135                               struct obd_info *oinfo,
1136                               struct obd_enqueue_info *einfo)
1137 {
1138         int rc;
1139         ENTRY;
1140
1141         EXP_CHECK_OP(exp, enqueue);
1142         EXP_COUNTER_INCREMENT(exp, enqueue);
1143
1144         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo);
1145         RETURN(rc);
1146 }
1147
1148 static inline int obd_match(struct obd_export *exp, struct lov_stripe_md *ea,
1149                             __u32 type, ldlm_policy_data_t *policy, __u32 mode,
1150                             int *flags, void *data, struct lustre_handle *lockh)
1151 {
1152         int rc;
1153         ENTRY;
1154
1155         EXP_CHECK_OP(exp, match);
1156         EXP_COUNTER_INCREMENT(exp, match);
1157
1158         rc = OBP(exp->exp_obd, match)(exp, ea, type, policy, mode, flags, data,
1159                                       lockh);
1160         RETURN(rc);
1161 }
1162
1163 static inline int obd_change_cbdata(struct obd_export *exp,
1164                                     struct lov_stripe_md *lsm,
1165                                     ldlm_iterator_t it, void *data)
1166 {
1167         int rc;
1168         ENTRY;
1169
1170         EXP_CHECK_OP(exp, change_cbdata);
1171         EXP_COUNTER_INCREMENT(exp, change_cbdata);
1172
1173         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1174         RETURN(rc);
1175 }
1176
1177 static inline int obd_cancel(struct obd_export *exp,
1178                              struct lov_stripe_md *ea, __u32 mode,
1179                              struct lustre_handle *lockh)
1180 {
1181         int rc;
1182         ENTRY;
1183
1184         EXP_CHECK_OP(exp, cancel);
1185         EXP_COUNTER_INCREMENT(exp, cancel);
1186
1187         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1188         RETURN(rc);
1189 }
1190
1191 static inline int obd_cancel_unused(struct obd_export *exp,
1192                                     struct lov_stripe_md *ea, int flags,
1193                                     void *opaque)
1194 {
1195         int rc;
1196         ENTRY;
1197
1198         EXP_CHECK_OP(exp, cancel_unused);
1199         EXP_COUNTER_INCREMENT(exp, cancel_unused);
1200
1201         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1202         RETURN(rc);
1203 }
1204
1205 static inline int obd_join_lru(struct obd_export *exp,
1206                                struct lov_stripe_md *ea, int join)
1207 {
1208         int rc;
1209         ENTRY;
1210
1211         EXP_CHECK_OP(exp, join_lru);
1212         EXP_COUNTER_INCREMENT(exp, join_lru);
1213
1214         rc = OBP(exp->exp_obd, join_lru)(exp, ea, join);
1215         RETURN(rc);
1216 }
1217
1218 static inline int obd_pin(struct obd_export *exp, obd_id ino, __u32 gen,
1219                           int type, struct obd_client_handle *handle, int flag)
1220 {
1221         int rc;
1222         ENTRY;
1223
1224         EXP_CHECK_OP(exp, pin);
1225         EXP_COUNTER_INCREMENT(exp, pin);
1226
1227         rc = OBP(exp->exp_obd, pin)(exp, ino, gen, type, handle, flag);
1228         RETURN(rc);
1229 }
1230
1231 static inline int obd_unpin(struct obd_export *exp,
1232                             struct obd_client_handle *handle, int flag)
1233 {
1234         int rc;
1235         ENTRY;
1236
1237         EXP_CHECK_OP(exp, unpin);
1238         EXP_COUNTER_INCREMENT(exp, unpin);
1239
1240         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1241         RETURN(rc);
1242 }
1243
1244
1245 static inline void obd_import_event(struct obd_device *obd,
1246                                     struct obd_import *imp,
1247                                     enum obd_import_event event)
1248 {
1249         ENTRY;
1250         if (!obd) {
1251                 CERROR("NULL device\n");
1252                 EXIT;
1253                 return;
1254         }
1255         if (obd->obd_set_up && OBP(obd, import_event)) {
1256                 OBD_COUNTER_INCREMENT(obd, import_event);
1257                 OBP(obd, import_event)(obd, imp, event);
1258         }
1259         EXIT;
1260 }
1261
1262 static inline int obd_notify(struct obd_device *obd,
1263                              struct obd_device *watched,
1264                              enum obd_notify_event ev, void *data)
1265 {
1266         ENTRY;
1267         OBD_CHECK_DEV(obd);
1268
1269         /* the check for async_recov is a complete hack - I'm hereby
1270            overloading the meaning to also mean "this was called from
1271            mds_postsetup".  I know that my mds is able to handle notifies
1272            by this point, and it needs to get them to execute mds_postrecov. */
1273         if (!obd->obd_set_up && !obd->obd_async_recov) {
1274                 CDEBUG(D_HA, "obd %s not set up\n", obd->obd_name);
1275                 RETURN(-EINVAL);
1276         }
1277
1278         if (!OBP(obd, notify)) {
1279                 CERROR("obd %s has no notify handler\n", obd->obd_name);
1280                 RETURN(-ENOSYS);
1281         }
1282
1283         OBD_COUNTER_INCREMENT(obd, notify);
1284         RETURN(OBP(obd, notify)(obd, watched, ev, data));
1285 }
1286
1287 static inline int obd_notify_observer(struct obd_device *observer,
1288                                       struct obd_device *observed,
1289                                       enum obd_notify_event ev, void *data)
1290 {
1291         int rc1;
1292         int rc2;
1293
1294         struct obd_notify_upcall *onu;
1295
1296         if (observer->obd_observer)
1297                 rc1 = obd_notify(observer->obd_observer, observed, ev, data);
1298         else
1299                 rc1 = 0;
1300         /*
1301          * Also, call non-obd listener, if any
1302          */
1303         onu = &observer->obd_upcall;
1304         if (onu->onu_upcall != NULL)
1305                 rc2 = onu->onu_upcall(observer, observed, ev, onu->onu_owner);
1306         else
1307                 rc2 = 0;
1308
1309         return rc1 ?: rc2;
1310  }
1311
1312 static inline int obd_quotacheck(struct obd_export *exp,
1313                                  struct obd_quotactl *oqctl)
1314 {
1315         int rc;
1316         ENTRY;
1317
1318         EXP_CHECK_OP(exp, quotacheck);
1319         EXP_COUNTER_INCREMENT(exp, quotacheck);
1320
1321         rc = OBP(exp->exp_obd, quotacheck)(exp, oqctl);
1322         RETURN(rc);
1323 }
1324
1325 static inline int obd_quotactl(struct obd_export *exp,
1326                                struct obd_quotactl *oqctl)
1327 {
1328         int rc;
1329         ENTRY;
1330
1331         EXP_CHECK_OP(exp, quotactl);
1332         EXP_COUNTER_INCREMENT(exp, quotactl);
1333
1334         rc = OBP(exp->exp_obd, quotactl)(exp, oqctl);
1335         RETURN(rc);
1336 }
1337
1338 static inline int obd_health_check(struct obd_device *obd)
1339 {
1340         /* returns: 0 on healthy
1341          *         >0 on unhealthy + reason code/flag
1342          *            however the only suppored reason == 1 right now
1343          *            We'll need to define some better reasons
1344          *            or flags in the future.
1345          *         <0 on error
1346          */
1347         int rc;
1348         ENTRY;
1349
1350         /* don't use EXP_CHECK_OP, because NULL method is normal here */
1351         if (obd == NULL || !OBT(obd)) {
1352                 CERROR("cleaned up obd\n");
1353                 RETURN(-EOPNOTSUPP);
1354         }
1355         if (!obd->obd_set_up || obd->obd_stopping)
1356                 RETURN(0);
1357         if (!OBP(obd, health_check))
1358                 RETURN(0);
1359
1360         rc = OBP(obd, health_check)(obd);
1361         RETURN(rc);
1362 }
1363
1364 static inline int obd_register_observer(struct obd_device *obd,
1365                                         struct obd_device *observer)
1366 {
1367         ENTRY;
1368         OBD_CHECK_DEV(obd);
1369         if (obd->obd_observer && observer)
1370                 RETURN(-EALREADY);
1371         obd->obd_observer = observer;
1372         RETURN(0);
1373 }
1374
1375 /* OBD Metadata Support */
1376
1377 extern int obd_init_caches(void);
1378 extern void obd_cleanup_caches(void);
1379
1380 /* support routines */
1381 extern cfs_mem_cache_t *obdo_cachep;
1382 static inline struct obdo *obdo_alloc(void)
1383 {
1384         struct obdo *oa;
1385
1386         OBD_SLAB_ALLOC(oa, obdo_cachep, CFS_ALLOC_STD, sizeof(*oa));
1387
1388         return oa;
1389 }
1390
1391 static inline void obdo_free(struct obdo *oa)
1392 {
1393         OBD_SLAB_FREE(oa, obdo_cachep, sizeof(*oa));
1394 }
1395
1396 /* I'm as embarrassed about this as you are.
1397  *
1398  * <shaver> // XXX do not look into _superhack with remaining eye
1399  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
1400 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
1401
1402 /* sysctl.c */
1403 extern void obd_sysctl_init (void);
1404 extern void obd_sysctl_clean (void);
1405
1406 /* uuid.c  */
1407 typedef __u8 class_uuid_t[16];
1408 void class_generate_random_uuid(class_uuid_t uuid);
1409 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
1410
1411 /* lustre_peer.c    */
1412 int lustre_uuid_to_peer(char *uuid, lnet_nid_t *peer_nid, int index);
1413 int class_add_uuid(char *uuid, __u64 nid);
1414 int class_del_uuid (char *uuid);
1415 void class_init_uuidlist(void);
1416 void class_exit_uuidlist(void);
1417
1418 #endif /* __LINUX_OBD_CLASS_H */