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   /* Allow old-style logs */
 102 #define CFG_F_EXCLUDE   0x10   /* OST exclusion list */
 103 #define CFG_F_SERVER146 0x20   /* Using old server */
 104
 105 /* Passed as data param to class_config_parse_llog */
 106 struct config_llog_instance {
 107         char *              cfg_instance;
 108         struct super_block *cfg_sb;
 109         struct obd_uuid     cfg_uuid;
 110         int                 cfg_last_idx; /* for partial llog processing */
 111         int                 cfg_flags;
 112 };
 113 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
 114                             struct config_llog_instance *cfg);
 115 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
 116                            struct config_llog_instance *cfg);
 117
 118 /* list of active configuration logs  */
 119 struct config_llog_data {
 120         char               *cld_logname;
 121         struct ldlm_res_id  cld_resid;
 122         struct config_llog_instance cld_cfg;
 123         struct list_head    cld_list_chain;
 124         atomic_t            cld_refcount;
 125         struct obd_export  *cld_mgcexp;
 126         unsigned int        cld_stopping:1; /* we were told to stop watching */
 127         unsigned int        cld_lostlock:1; /* lock not requeued */
 128 };
 129
 130 struct lustre_profile {
 131         struct list_head lp_list;
 132         char * lp_profile;
 133         char * lp_osc;
 134         char * lp_mdc;
 135 };
 136
 137 struct lustre_profile *class_get_profile(char * prof);
 138 void class_del_profile(char *prof);
 139 void class_del_profiles(void);
 140
 141 #define class_export_rpc_get(exp)                                       \
 142 ({                                                                      \
 143         atomic_inc(&(exp)->exp_rpc_count);                              \
 144         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",    \
 145                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 146         class_export_get(exp);                                          \
 147 })
 148
 149 #define class_export_rpc_put(exp)                                       \
 150 ({                                                                      \
 151         atomic_dec(&(exp)->exp_rpc_count);                              \
 152         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",    \
 153                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 154         class_export_put(exp);                                          \
 155 })
 156
 157 /* genops.c */
 158 #define class_export_get(exp)                                                  \
 159 ({                                                                             \
 160         struct obd_export *exp_ = exp;                                         \
 161         atomic_inc(&exp_->exp_refcount);                                       \
 162         CDEBUG(D_INFO, "GETting export %p : new refcount %d\n", exp_,          \
 163                atomic_read(&exp_->exp_refcount));                              \
 164         exp_;                                                                  \
 165 })
 166
 167 #define class_export_put(exp)                                                  \
 168 do {                                                                           \
 169         LASSERT((exp) != NULL);                                                \
 170         CDEBUG(D_INFO, "PUTting export %p : new refcount %d\n", (exp),         \
 171                atomic_read(&(exp)->exp_refcount) - 1);                         \
 172         LASSERT(atomic_read(&(exp)->exp_refcount) > 0);                        \
 173         LASSERT(atomic_read(&(exp)->exp_refcount) < 0x5a5a5a);                 \
 174         __class_export_put(exp);                                               \
 175 } while (0)
 176
 177 void __class_export_put(struct obd_export *);
 178 struct obd_export *class_new_export(struct obd_device *obddev,
 179                                     struct obd_uuid *cluuid);
 180 void class_unlink_export(struct obd_export *exp);
 181
 182 struct obd_import *class_import_get(struct obd_import *);
 183 void class_import_put(struct obd_import *);
 184 struct obd_import *class_new_import(struct obd_device *obd);
 185 void class_destroy_import(struct obd_import *exp);
 186
 187 struct obd_type *class_search_type(const char *name);
 188 struct obd_type *class_get_type(const char *name);
 189 void class_put_type(struct obd_type *type);
 190 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 191                   struct obd_uuid *cluuid);
 192 int class_disconnect(struct obd_export *exp);
 193 void class_fail_export(struct obd_export *exp);
 194 void class_disconnect_exports(struct obd_device *obddev);
 195 void class_disconnect_stale_exports(struct obd_device *obddev);
 196 int class_manual_cleanup(struct obd_device *obd);
 197
 198 /* obdo.c */
 199 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_flag valid);
 200 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
 201
 202
 203 #define OBT(dev)        (dev)->obd_type
 204 #define OBP(dev, op)    (dev)->obd_type->typ_ops->o_ ## op
 205 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 206
 207 /* Ensure obd_setup: used for cleanup which must be called
 208    while obd is stopping */
 209 #define OBD_CHECK_DEV(obd)                                      \
 210 do {                                                            \
 211         if (!(obd)) {                                           \
 212                 CERROR("NULL device\n");                        \
 213                 RETURN(-ENODEV);                                \
 214         }                                                       \
 215 } while (0)
 216
 217 /* ensure obd_setup and !obd_stopping */
 218 #define OBD_CHECK_DEV_ACTIVE(obd)                               \
 219 do {                                                            \
 220         OBD_CHECK_DEV(obd);                                     \
 221         if (!(obd)->obd_set_up || (obd)->obd_stopping) {        \
 222                 CERROR("Device %d not setup\n",                 \
 223                        (obd)->obd_minor);                       \
 224                 RETURN(-ENODEV);                                \
 225         }                                                       \
 226 } while (0)
 227
 228
 229 #ifdef LPROCFS
 230 #define OBD_COUNTER_OFFSET(op)                                  \
 231         ((offsetof(struct obd_ops, o_ ## op) -                  \
 232           offsetof(struct obd_ops, o_iocontrol))                \
 233          / sizeof(((struct obd_ops *)(0))->o_iocontrol))
 234
 235 #define OBD_COUNTER_INCREMENT(obdx, op)                           \
 236         if ((obdx)->obd_stats != NULL) {                          \
 237                 unsigned int coffset;                             \
 238                 coffset = (unsigned int)((obdx)->obd_cntr_base) + \
 239                         OBD_COUNTER_OFFSET(op);                   \
 240                 LASSERT(coffset < (obdx)->obd_stats->ls_num);     \
 241                 lprocfs_counter_incr((obdx)->obd_stats, coffset); \
 242         }
 243
 244 #define EXP_COUNTER_INCREMENT(export, op)                                    \
 245         if ((export)->exp_obd->obd_stats != NULL) {                          \
 246                 unsigned int coffset;                                        \
 247                 coffset = (unsigned int)((export)->exp_obd->obd_cntr_base) + \
 248                         OBD_COUNTER_OFFSET(op);                              \
 249                 LASSERT(coffset < (export)->exp_obd->obd_stats->ls_num);     \
 250                 lprocfs_counter_incr((export)->exp_obd->obd_stats, coffset); \
 251                 if ((export)->exp_ops_stats != NULL)                         \
 252                         lprocfs_counter_incr(                                \
 253                                 (export)->exp_ops_stats, coffset);           \
 254         }
 255
 256 #else
 257 #define OBD_COUNTER_OFFSET(op)
 258 #define OBD_COUNTER_INCREMENT(obd, op)
 259 #define EXP_COUNTER_INCREMENT(exp, op);
 260 #endif
 261
 262 #define OBD_CHECK_OP(obd, op, err)                              \
 263 do {                                                            \
 264         if (!OBT(obd) || !OBP((obd), op)) {\
 265                 if (err)                                        \
 266                         CERROR("obd_" #op ": dev %d no operation\n",    \
 267                                obd->obd_minor);                         \
 268                 RETURN(err);                                    \
 269         }                                                       \
 270 } while (0)
 271
 272 #define EXP_CHECK_OP(exp, op)                                   \
 273 do {                                                            \
 274         if ((exp) == NULL) {                                    \
 275                 CERROR("obd_" #op ": NULL export\n");           \
 276                 RETURN(-ENODEV);                                \
 277         }                                                       \
 278         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 279                 CERROR("obd_" #op ": cleaned up obd\n");        \
 280                 RETURN(-EOPNOTSUPP);                            \
 281         }                                                       \
 282         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 283                 CERROR("obd_" #op ": dev %d no operation\n",    \
 284                        (exp)->exp_obd->obd_minor);              \
 285                 RETURN(-EOPNOTSUPP);                            \
 286         }                                                       \
 287 } while (0)
 288
 289 #define CTXT_CHECK_OP(ctxt, op, err)                                         \
 290 do {                                                            \
 291         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {                     \
 292                 if (err)                                        \
 293                         CERROR("lop_" #op ": dev %d no operation\n",    \
 294                                ctxt->loc_obd->obd_minor);                         \
 295                 RETURN(err);                                    \
 296         }                                                       \
 297 } while (0)
 298
 299 static inline int class_devno_max(void)
 300 {
 301         return MAX_OBD_DEVICES;
 302 }
 303
 304 static inline int obd_get_info(struct obd_export *exp, __u32 keylen,
 305                                void *key, __u32 *vallen, void *val)
 306 {
 307         int rc;
 308         ENTRY;
 309
 310         EXP_CHECK_OP(exp, get_info);
 311         EXP_COUNTER_INCREMENT(exp, get_info);
 312
 313         rc = OBP(exp->exp_obd, get_info)(exp, keylen, key, vallen, val);
 314         RETURN(rc);
 315 }
 316
 317 static inline int obd_set_info_async(struct obd_export *exp, obd_count keylen,
 318                                      void *key, obd_count vallen, void *val,
 319                                      struct ptlrpc_request_set *set)
 320 {
 321         int rc;
 322         ENTRY;
 323
 324         EXP_CHECK_OP(exp, set_info_async);
 325         EXP_COUNTER_INCREMENT(exp, set_info_async);
 326
 327         rc = OBP(exp->exp_obd, set_info_async)(exp, keylen, key, vallen, val,
 328                                                set);
 329         RETURN(rc);
 330 }
 331
 332 static inline int obd_setup(struct obd_device *obd, int datalen, void *data)
 333 {
 334         int rc;
 335         ENTRY;
 336
 337         OBD_CHECK_OP(obd, setup, -EOPNOTSUPP);
 338         OBD_COUNTER_INCREMENT(obd, setup);
 339
 340         rc = OBP(obd, setup)(obd, datalen, data);
 341         RETURN(rc);
 342 }
 343
 344 static inline int obd_precleanup(struct obd_device *obd,
 345                                  enum obd_cleanup_stage cleanup_stage)
 346 {
 347         int rc;
 348         ENTRY;
 349
 350         OBD_CHECK_OP(obd, precleanup, 0);
 351         OBD_COUNTER_INCREMENT(obd, precleanup);
 352
 353         rc = OBP(obd, precleanup)(obd, cleanup_stage);
 354         RETURN(rc);
 355 }
 356
 357 static inline int obd_cleanup(struct obd_device *obd)
 358 {
 359         int rc;
 360         ENTRY;
 361
 362         OBD_CHECK_DEV(obd);
 363         OBD_CHECK_OP(obd, cleanup, 0);
 364         OBD_COUNTER_INCREMENT(obd, cleanup);
 365
 366         rc = OBP(obd, cleanup)(obd);
 367         RETURN(rc);
 368 }
 369
 370 static inline int
 371 obd_process_config(struct obd_device *obd, int datalen, void *data)
 372 {
 373         int rc;
 374         ENTRY;
 375
 376         OBD_CHECK_OP(obd, process_config, -EOPNOTSUPP);
 377         OBD_COUNTER_INCREMENT(obd, process_config);
 378
 379         rc = OBP(obd, process_config)(obd, datalen, data);
 380         RETURN(rc);
 381 }
 382
 383 /* Pack an in-memory MD struct for storage on disk.
 384  * Returns +ve size of packed MD (0 for free), or -ve error.
 385  *
 386  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 387  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 388  * If @*disk_tgt == NULL, it will be allocated
 389  */
 390 static inline int obd_packmd(struct obd_export *exp,
 391                              struct lov_mds_md **disk_tgt,
 392                              struct lov_stripe_md *mem_src)
 393 {
 394         int rc;
 395         ENTRY;
 396
 397         EXP_CHECK_OP(exp, packmd);
 398         EXP_COUNTER_INCREMENT(exp, packmd);
 399
 400         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 401         RETURN(rc);
 402 }
 403
 404 static inline int obd_size_diskmd(struct obd_export *exp,
 405                                   struct lov_stripe_md *mem_src)
 406 {
 407         return obd_packmd(exp, NULL, mem_src);
 408 }
 409
 410 /* helper functions */
 411 static inline int obd_alloc_diskmd(struct obd_export *exp,
 412                                    struct lov_mds_md **disk_tgt)
 413 {
 414         LASSERT(disk_tgt);
 415         LASSERT(*disk_tgt == NULL);
 416         return obd_packmd(exp, disk_tgt, NULL);
 417 }
 418
 419 static inline int obd_free_diskmd(struct obd_export *exp,
 420                                   struct lov_mds_md **disk_tgt)
 421 {
 422         LASSERT(disk_tgt);
 423         LASSERT(*disk_tgt);
 424         return obd_packmd(exp, disk_tgt, NULL);
 425 }
 426
 427 /* Unpack an MD struct from disk to in-memory format.
 428  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 429  *
 430  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 431  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 432  * If @*mem_tgt == NULL, it will be allocated
 433  */
 434 static inline int obd_unpackmd(struct obd_export *exp,
 435                                struct lov_stripe_md **mem_tgt,
 436                                struct lov_mds_md *disk_src,
 437                                int disk_len)
 438 {
 439         int rc;
 440         ENTRY;
 441
 442         EXP_CHECK_OP(exp, unpackmd);
 443         EXP_COUNTER_INCREMENT(exp, unpackmd);
 444
 445         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 446         RETURN(rc);
 447 }
 448
 449 /* helper functions */
 450 static inline int obd_alloc_memmd(struct obd_export *exp,
 451                                   struct lov_stripe_md **mem_tgt)
 452 {
 453         LASSERT(mem_tgt);
 454         LASSERT(*mem_tgt == NULL);
 455         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 456 }
 457
 458 static inline int obd_free_memmd(struct obd_export *exp,
 459                                  struct lov_stripe_md **mem_tgt)
 460 {
 461         LASSERT(mem_tgt);
 462         LASSERT(*mem_tgt);
 463         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 464 }
 465
 466 static inline int obd_checkmd(struct obd_export *exp,
 467                               struct obd_export *md_exp,
 468                               struct lov_stripe_md *mem_tgt)
 469 {
 470         int rc;
 471         ENTRY;
 472
 473         EXP_CHECK_OP(exp, checkmd);
 474         EXP_COUNTER_INCREMENT(exp, checkmd);
 475
 476         rc = OBP(exp->exp_obd, checkmd)(exp, md_exp, mem_tgt);
 477         RETURN(rc);
 478 }
 479
 480 static inline int obd_create(struct obd_export *exp, struct obdo *obdo,
 481                              struct lov_stripe_md **ea,
 482                              struct obd_trans_info *oti)
 483 {
 484         int rc;
 485         ENTRY;
 486
 487         EXP_CHECK_OP(exp, create);
 488         EXP_COUNTER_INCREMENT(exp, create);
 489
 490         rc = OBP(exp->exp_obd, create)(exp, obdo, ea, oti);
 491         RETURN(rc);
 492 }
 493
 494 static inline int obd_destroy(struct obd_export *exp, struct obdo *obdo,
 495                               struct lov_stripe_md *ea,
 496                               struct obd_trans_info *oti,
 497                               struct obd_export *md_exp)
 498 {
 499         int rc;
 500         ENTRY;
 501
 502         EXP_CHECK_OP(exp, destroy);
 503         EXP_COUNTER_INCREMENT(exp, destroy);
 504
 505         rc = OBP(exp->exp_obd, destroy)(exp, obdo, ea, oti, md_exp);
 506         RETURN(rc);
 507 }
 508
 509 static inline int obd_getattr(struct obd_export *exp, struct obd_info *oinfo)
 510 {
 511         int rc;
 512         ENTRY;
 513
 514         EXP_CHECK_OP(exp, getattr);
 515         EXP_COUNTER_INCREMENT(exp, getattr);
 516
 517         rc = OBP(exp->exp_obd, getattr)(exp, oinfo);
 518         RETURN(rc);
 519 }
 520
 521 static inline int obd_getattr_async(struct obd_export *exp,
 522                                     struct obd_info *oinfo,
 523                                     struct ptlrpc_request_set *set)
 524 {
 525         int rc;
 526         ENTRY;
 527
 528         EXP_CHECK_OP(exp, getattr_async);
 529         EXP_COUNTER_INCREMENT(exp, getattr_async);
 530
 531         rc = OBP(exp->exp_obd, getattr_async)(exp, oinfo, set);
 532         RETURN(rc);
 533 }
 534
 535 static inline int obd_setattr(struct obd_export *exp, struct obd_info *oinfo,
 536                               struct obd_trans_info *oti)
 537 {
 538         int rc;
 539         ENTRY;
 540
 541         EXP_CHECK_OP(exp, setattr);
 542         EXP_COUNTER_INCREMENT(exp, setattr);
 543
 544         rc = OBP(exp->exp_obd, setattr)(exp, oinfo, oti);
 545         RETURN(rc);
 546 }
 547
 548 /* This performs all the requests set init/wait/destroy actions. */
 549 static inline int obd_setattr_rqset(struct obd_export *exp,
 550                                     struct obd_info *oinfo,
 551                                     struct obd_trans_info *oti)
 552 {
 553         struct ptlrpc_request_set *set = NULL;
 554         int rc;
 555         ENTRY;
 556
 557         EXP_CHECK_OP(exp, setattr_async);
 558         EXP_COUNTER_INCREMENT(exp, setattr_async);
 559
 560         set =  ptlrpc_prep_set();
 561         if (set == NULL)
 562                 RETURN(-ENOMEM);
 563
 564         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 565         if (rc == 0)
 566                 rc = ptlrpc_set_wait(set);
 567         ptlrpc_set_destroy(set);
 568         RETURN(rc);
 569 }
 570
 571 /* This adds all the requests into @set if @set != NULL, otherwise
 572    all requests are sent asynchronously without waiting for response. */
 573 static inline int obd_setattr_async(struct obd_export *exp,
 574                                     struct obd_info *oinfo,
 575                                     struct obd_trans_info *oti,
 576                                     struct ptlrpc_request_set *set)
 577 {
 578         int rc;
 579         ENTRY;
 580
 581         EXP_CHECK_OP(exp, setattr_async);
 582         EXP_COUNTER_INCREMENT(exp, setattr_async);
 583
 584         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 585         RETURN(rc);
 586 }
 587
 588 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 589                                int priority)
 590 {
 591         struct obd_device *obd = imp->imp_obd;
 592         int rc;
 593         ENTRY;
 594
 595         OBD_CHECK_DEV_ACTIVE(obd);
 596         OBD_CHECK_OP(obd, add_conn, -EOPNOTSUPP);
 597         OBD_COUNTER_INCREMENT(obd, add_conn);
 598
 599         rc = OBP(obd, add_conn)(imp, uuid, priority);
 600         RETURN(rc);
 601 }
 602
 603 static inline int obd_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
 604 {
 605         struct obd_device *obd = imp->imp_obd;
 606         int rc;
 607         ENTRY;
 608
 609         OBD_CHECK_DEV_ACTIVE(obd);
 610         OBD_CHECK_OP(obd, del_conn, -EOPNOTSUPP);
 611         OBD_COUNTER_INCREMENT(obd, del_conn);
 612
 613         rc = OBP(obd, del_conn)(imp, uuid);
 614         RETURN(rc);
 615 }
 616
 617 static inline int obd_connect(struct lustre_handle *conn,struct obd_device *obd,
 618                               struct obd_uuid *cluuid,
 619                               struct obd_connect_data *d)
 620 {
 621         int rc;
 622         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition check */
 623         ENTRY;
 624
 625         OBD_CHECK_DEV_ACTIVE(obd);
 626         OBD_CHECK_OP(obd, connect, -EOPNOTSUPP);
 627         OBD_COUNTER_INCREMENT(obd, connect);
 628
 629         rc = OBP(obd, connect)(conn, obd, cluuid, d);
 630         /* check that only subset is granted */
 631         LASSERT(ergo(d != NULL,
 632                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 633         RETURN(rc);
 634 }
 635
 636 static inline int obd_reconnect(struct obd_export *exp,
 637                                 struct obd_device *obd,
 638                                 struct obd_uuid *cluuid,
 639                                 struct obd_connect_data *d)
 640 {
 641         int rc;
 642         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition check */
 643         ENTRY;
 644
 645         OBD_CHECK_DEV_ACTIVE(obd);
 646         OBD_CHECK_OP(obd, reconnect, 0);
 647         OBD_COUNTER_INCREMENT(obd, reconnect);
 648
 649         rc = OBP(obd, reconnect)(exp, obd, cluuid, d);
 650         /* check that only subset is granted */
 651         LASSERT(ergo(d != NULL,
 652                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 653         RETURN(rc);
 654 }
 655
 656 static inline int obd_disconnect(struct obd_export *exp)
 657 {
 658         int rc;
 659         ENTRY;
 660
 661         EXP_CHECK_OP(exp, disconnect);
 662         EXP_COUNTER_INCREMENT(exp, disconnect);
 663
 664         rc = OBP(exp->exp_obd, disconnect)(exp);
 665         RETURN(rc);
 666 }
 667
 668 static inline int obd_ping(struct obd_export *exp)
 669 {
 670         int rc;
 671         ENTRY;
 672
 673         OBD_CHECK_OP(exp->exp_obd, ping, 0);
 674         EXP_COUNTER_INCREMENT(exp, ping);
 675
 676         rc = OBP(exp->exp_obd, ping)(exp);
 677         RETURN(rc);
 678 }
 679
 680 static inline int obd_init_export(struct obd_export *exp)
 681 {
 682         int rc = 0;
 683
 684         ENTRY;
 685         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 686             OBP((exp)->exp_obd, init_export))
 687                 rc = OBP(exp->exp_obd, init_export)(exp);
 688         RETURN(rc);
 689 }
 690
 691 static inline int obd_destroy_export(struct obd_export *exp)
 692 {
 693         ENTRY;
 694         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 695             OBP((exp)->exp_obd, destroy_export))
 696                 OBP(exp->exp_obd, destroy_export)(exp);
 697         RETURN(0);
 698 }
 699
 700 static inline int obd_extent_calc(struct obd_export *exp,
 701                                   struct lov_stripe_md *md,
 702                                   int cmd, obd_off *offset)
 703 {
 704         int rc;
 705         ENTRY;
 706         EXP_CHECK_OP(exp, extent_calc);
 707         rc = OBP(exp->exp_obd, extent_calc)(exp, md, cmd, offset);
 708         RETURN(rc);
 709 }
 710
 711 static inline struct dentry *
 712 obd_lvfs_fid2dentry(struct obd_export *exp, __u64 id_ino, __u32 gen, __u64 gr)
 713 {
 714         LASSERT(exp->exp_obd);
 715
 716         return lvfs_fid2dentry(&exp->exp_obd->obd_lvfs_ctxt, id_ino, gen, gr,
 717                                exp->exp_obd);
 718 }
 719
 720 #ifndef time_before
 721 #define time_before(t1, t2) ((long)t2 - (long)t1 > 0)
 722 #endif
 723
 724 /* @max_age is the oldest time in jiffies that we accept using a cached data.
 725  * If the cache is older than @max_age we will get a new value from the
 726  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
 727 static inline int obd_statfs_async(struct obd_device *obd,
 728                                    struct obd_info *oinfo,
 729                                    __u64 max_age,
 730                                    struct ptlrpc_request_set *rqset)
 731 {
 732         int rc = 0;
 733         ENTRY;
 734
 735         if (obd == NULL)
 736                 RETURN(-EINVAL);
 737
 738         OBD_CHECK_OP(obd, statfs, -EOPNOTSUPP);
 739         OBD_COUNTER_INCREMENT(obd, statfs);
 740
 741         CDEBUG(D_SUPER, "%s: osfs %p age "LPU64", max_age "LPU64"\n",
 742                obd->obd_name, &obd->obd_osfs, obd->obd_osfs_age, max_age);
 743         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
 744                 rc = OBP(obd, statfs_async)(obd, oinfo, max_age, rqset);
 745         } else {
 746                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
 747                        " objects "LPU64"/"LPU64"\n",
 748                        obd->obd_name, &obd->obd_osfs,
 749                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
 750                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
 751                 spin_lock(&obd->obd_osfs_lock);
 752                 memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
 753                 spin_unlock(&obd->obd_osfs_lock);
 754                 if (oinfo->oi_cb_up)
 755                         oinfo->oi_cb_up(oinfo, 0);
 756         }
 757         RETURN(rc);
 758 }
 759
 760 static inline int obd_statfs_rqset(struct obd_device *obd,
 761                                    struct obd_statfs *osfs, __u64 max_age)
 762 {
 763         struct ptlrpc_request_set *set = NULL;
 764         struct obd_info oinfo = { { { 0 } } };
 765         int rc = 0;
 766         ENTRY;
 767
 768         set = ptlrpc_prep_set();
 769         if (set == NULL)
 770                 RETURN(-ENOMEM);
 771
 772         oinfo.oi_osfs = osfs;
 773         rc = obd_statfs_async(obd, &oinfo, max_age, set);
 774         if (rc == 0)
 775                 rc = ptlrpc_set_wait(set);
 776         ptlrpc_set_destroy(set);
 777         RETURN(rc);
 778 }
 779
 780 /* @max_age is the oldest time in jiffies that we accept using a cached data.
 781  * If the cache is older than @max_age we will get a new value from the
 782  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
 783 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
 784                              __u64 max_age)
 785 {
 786         int rc = 0;
 787         ENTRY;
 788
 789         if (obd == NULL)
 790                 RETURN(-EINVAL);
 791
 792         OBD_CHECK_OP(obd, statfs, -EOPNOTSUPP);
 793         OBD_COUNTER_INCREMENT(obd, statfs);
 794
 795         CDEBUG(D_SUPER, "osfs "LPU64", max_age "LPU64"\n",
 796                obd->obd_osfs_age, max_age);
 797         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
 798                 rc = OBP(obd, statfs)(obd, osfs, max_age);
 799                 if (rc == 0) {
 800                         spin_lock(&obd->obd_osfs_lock);
 801                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
 802                         obd->obd_osfs_age = cfs_time_current_64();
 803                         spin_unlock(&obd->obd_osfs_lock);
 804                 }
 805         } else {
 806                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
 807                        " objects "LPU64"/"LPU64"\n",
 808                        obd->obd_name, &obd->obd_osfs,
 809                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
 810                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
 811                 spin_lock(&obd->obd_osfs_lock);
 812                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
 813                 spin_unlock(&obd->obd_osfs_lock);
 814         }
 815         RETURN(rc);
 816 }
 817
 818 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
 819                            struct lov_stripe_md *ea, obd_size start,
 820                            obd_size end)
 821 {
 822         int rc;
 823         ENTRY;
 824
 825         OBD_CHECK_OP(exp->exp_obd, sync, -EOPNOTSUPP);
 826         EXP_COUNTER_INCREMENT(exp, sync);
 827
 828         rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end);
 829         RETURN(rc);
 830 }
 831
 832 static inline int obd_punch_rqset(struct obd_export *exp,
 833                                   struct obd_info *oinfo,
 834                                   struct obd_trans_info *oti)
 835 {
 836         struct ptlrpc_request_set *set = NULL;
 837         int rc;
 838         ENTRY;
 839
 840         EXP_CHECK_OP(exp, punch);
 841         EXP_COUNTER_INCREMENT(exp, punch);
 842
 843         set =  ptlrpc_prep_set();
 844         if (set == NULL)
 845                 RETURN(-ENOMEM);
 846
 847         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, set);
 848         if (rc == 0)
 849                 rc = ptlrpc_set_wait(set);
 850         ptlrpc_set_destroy(set);
 851         RETURN(rc);
 852 }
 853
 854 static inline int obd_punch(struct obd_export *exp, struct obd_info *oinfo,
 855                             struct obd_trans_info *oti,
 856                             struct ptlrpc_request_set *rqset)
 857 {
 858         int rc;
 859         ENTRY;
 860
 861         EXP_CHECK_OP(exp, punch);
 862         EXP_COUNTER_INCREMENT(exp, punch);
 863
 864         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, rqset);
 865         RETURN(rc);
 866 }
 867
 868 static inline int obd_brw(int cmd, struct obd_export *exp,
 869                           struct obd_info *oinfo, obd_count oa_bufs,
 870                           struct brw_page *pg, struct obd_trans_info *oti)
 871 {
 872         int rc;
 873         ENTRY;
 874
 875         EXP_CHECK_OP(exp, brw);
 876         EXP_COUNTER_INCREMENT(exp, brw);
 877
 878         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
 879                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
 880                        "or OBD_BRW_CHECK\n");
 881                 LBUG();
 882         }
 883
 884         rc = OBP(exp->exp_obd, brw)(cmd, exp, oinfo, oa_bufs, pg, oti);
 885         RETURN(rc);
 886 }
 887
 888 static inline int obd_brw_async(int cmd, struct obd_export *exp,
 889                                 struct obd_info *oinfo, obd_count oa_bufs,
 890                                 struct brw_page *pg, struct obd_trans_info *oti,
 891                                 struct ptlrpc_request_set *set)
 892 {
 893         int rc;
 894         ENTRY;
 895
 896         EXP_CHECK_OP(exp, brw_async);
 897         EXP_COUNTER_INCREMENT(exp, brw_async);
 898
 899         if (!(cmd & OBD_BRW_RWMASK)) {
 900                 CERROR("obd_brw: cmd must be OBD_BRW_READ or OBD_BRW_WRITE\n");
 901                 LBUG();
 902         }
 903
 904         rc = OBP(exp->exp_obd, brw_async)(cmd, exp, oinfo, oa_bufs, pg,oti,set);
 905         RETURN(rc);
 906 }
 907
 908 static inline int obd_brw_rqset(int cmd, struct obd_export *exp,
 909                                 struct obdo *oa, struct lov_stripe_md *lsm,
 910                                 obd_count oa_bufs, struct brw_page *pg,
 911                                 struct obd_trans_info *oti)
 912 {
 913         struct ptlrpc_request_set *set = NULL;
 914         struct obd_info oinfo = { { { 0 } } };
 915         int rc = 0;
 916         ENTRY;
 917
 918         set =  ptlrpc_prep_set();
 919         if (set == NULL)
 920                 RETURN(-ENOMEM);
 921
 922         oinfo.oi_oa = oa;
 923         oinfo.oi_md = lsm;
 924         rc = obd_brw_async(cmd, exp, &oinfo, oa_bufs, pg, oti, set);
 925         if (rc == 0) {
 926                 rc = ptlrpc_set_wait(set);
 927                 if (rc)
 928                         CERROR("error from callback: rc = %d\n", rc);
 929         } else {
 930                 CDEBUG(rc == -ENOSPC ? D_INODE : D_ERROR,
 931                        "error from obd_brw_async: rc = %d\n", rc);
 932         }
 933         ptlrpc_set_destroy(set);
 934         RETURN(rc);
 935 }
 936
 937 static inline  int obd_prep_async_page(struct obd_export *exp,
 938                                        struct lov_stripe_md *lsm,
 939                                        struct lov_oinfo *loi,
 940                                        cfs_page_t *page, obd_off offset,
 941                                        struct obd_async_page_ops *ops,
 942                                        void *data, void **res)
 943 {
 944         int ret;
 945         ENTRY;
 946
 947         OBD_CHECK_OP(exp->exp_obd, prep_async_page, -EOPNOTSUPP);
 948         EXP_COUNTER_INCREMENT(exp, prep_async_page);
 949
 950         ret = OBP(exp->exp_obd, prep_async_page)(exp, lsm, loi, page, offset,
 951                                                  ops, data, res);
 952         RETURN(ret);
 953 }
 954
 955 static inline int obd_queue_async_io(struct obd_export *exp,
 956                                      struct lov_stripe_md *lsm,
 957                                      struct lov_oinfo *loi, void *cookie,
 958                                      int cmd, obd_off off, int count,
 959                                      obd_flag brw_flags, obd_flag async_flags)
 960 {
 961         int rc;
 962         ENTRY;
 963
 964         OBD_CHECK_OP(exp->exp_obd, queue_async_io, -EOPNOTSUPP);
 965         EXP_COUNTER_INCREMENT(exp, queue_async_io);
 966         LASSERT(cmd & OBD_BRW_RWMASK);
 967
 968         rc = OBP(exp->exp_obd, queue_async_io)(exp, lsm, loi, cookie, cmd, off,
 969                                                count, brw_flags, async_flags);
 970         RETURN(rc);
 971 }
 972
 973 static inline int obd_set_async_flags(struct obd_export *exp,
 974                                       struct lov_stripe_md *lsm,
 975                                       struct lov_oinfo *loi, void *cookie,
 976                                       obd_flag async_flags)
 977 {
 978         int rc;
 979         ENTRY;
 980
 981         OBD_CHECK_OP(exp->exp_obd, set_async_flags, -EOPNOTSUPP);
 982         EXP_COUNTER_INCREMENT(exp, set_async_flags);
 983
 984         rc = OBP(exp->exp_obd, set_async_flags)(exp, lsm, loi, cookie,
 985                                                 async_flags);
 986         RETURN(rc);
 987 }
 988
 989 static inline int obd_queue_group_io(struct obd_export *exp,
 990                                      struct lov_stripe_md *lsm,
 991                                      struct lov_oinfo *loi,
 992                                      struct obd_io_group *oig,
 993                                      void *cookie, int cmd, obd_off off,
 994                                      int count, obd_flag brw_flags,
 995                                      obd_flag async_flags)
 996 {
 997         int rc;
 998         ENTRY;
 999
1000         OBD_CHECK_OP(exp->exp_obd, queue_group_io, -EOPNOTSUPP);
1001         EXP_COUNTER_INCREMENT(exp, queue_group_io);
1002         LASSERT(cmd & OBD_BRW_RWMASK);
1003
1004         rc = OBP(exp->exp_obd, queue_group_io)(exp, lsm, loi, oig, cookie,
1005                                                cmd, off, count, brw_flags,
1006                                                async_flags);
1007         RETURN(rc);
1008 }
1009
1010 static inline int obd_trigger_group_io(struct obd_export *exp,
1011                                        struct lov_stripe_md *lsm,
1012                                        struct lov_oinfo *loi,
1013                                        struct obd_io_group *oig)
1014 {
1015         int rc;
1016         ENTRY;
1017
1018         OBD_CHECK_OP(exp->exp_obd, trigger_group_io, -EOPNOTSUPP);
1019         EXP_COUNTER_INCREMENT(exp, trigger_group_io);
1020
1021         rc = OBP(exp->exp_obd, trigger_group_io)(exp, lsm, loi, oig);
1022         RETURN(rc);
1023 }
1024
1025 static inline int obd_teardown_async_page(struct obd_export *exp,
1026                                           struct lov_stripe_md *lsm,
1027                                           struct lov_oinfo *loi, void *cookie)
1028 {
1029         int rc;
1030         ENTRY;
1031
1032         OBD_CHECK_OP(exp->exp_obd, teardown_async_page, -EOPNOTSUPP);
1033         EXP_COUNTER_INCREMENT(exp, teardown_async_page);
1034
1035         rc = OBP(exp->exp_obd, teardown_async_page)(exp, lsm, loi, cookie);
1036         RETURN(rc);
1037 }
1038
1039 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
1040                              int objcount, struct obd_ioobj *obj,
1041                              int niocount, struct niobuf_remote *remote,
1042                              struct niobuf_local *local,
1043                              struct obd_trans_info *oti)
1044 {
1045         int rc;
1046         ENTRY;
1047
1048         OBD_CHECK_OP(exp->exp_obd, preprw, -EOPNOTSUPP);
1049         EXP_COUNTER_INCREMENT(exp, preprw);
1050
1051         rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, niocount,
1052                                        remote, local, oti);
1053         RETURN(rc);
1054 }
1055
1056 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
1057                                int objcount, struct obd_ioobj *obj,
1058                                int niocount, struct niobuf_local *local,
1059                                struct obd_trans_info *oti, int rc)
1060 {
1061         ENTRY;
1062
1063         OBD_CHECK_OP(exp->exp_obd, commitrw, -EOPNOTSUPP);
1064         EXP_COUNTER_INCREMENT(exp, commitrw);
1065
1066         rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj, niocount,
1067                                          local, oti, rc);
1068         RETURN(rc);
1069 }
1070
1071 static inline int obd_merge_lvb(struct obd_export *exp,
1072                                 struct lov_stripe_md *lsm,
1073                                 struct ost_lvb *lvb, int kms_only)
1074 {
1075         int rc;
1076         ENTRY;
1077
1078         OBD_CHECK_OP(exp->exp_obd, merge_lvb, -EOPNOTSUPP);
1079         EXP_COUNTER_INCREMENT(exp, merge_lvb);
1080
1081         rc = OBP(exp->exp_obd, merge_lvb)(exp, lsm, lvb, kms_only);
1082         RETURN(rc);
1083 }
1084
1085 static inline int obd_adjust_kms(struct obd_export *exp,
1086                                  struct lov_stripe_md *lsm, obd_off size,
1087                                  int shrink)
1088 {
1089         int rc;
1090         ENTRY;
1091
1092         OBD_CHECK_OP(exp->exp_obd, adjust_kms, -EOPNOTSUPP);
1093         EXP_COUNTER_INCREMENT(exp, adjust_kms);
1094
1095         rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
1096         RETURN(rc);
1097 }
1098
1099 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1100                                 int len, void *karg, void *uarg)
1101 {
1102         int rc;
1103         ENTRY;
1104
1105         EXP_CHECK_OP(exp, iocontrol);
1106         EXP_COUNTER_INCREMENT(exp, iocontrol);
1107
1108         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1109         RETURN(rc);
1110 }
1111
1112 static inline int obd_enqueue_rqset(struct obd_export *exp,
1113                                     struct obd_info *oinfo,
1114                                     struct obd_enqueue_info *einfo)
1115 {
1116         int rc;
1117         ENTRY;
1118
1119         EXP_CHECK_OP(exp, enqueue);
1120         EXP_COUNTER_INCREMENT(exp, enqueue);
1121
1122         einfo->ei_rqset =  ptlrpc_prep_set();
1123         if (einfo->ei_rqset == NULL)
1124                 RETURN(-ENOMEM);
1125
1126         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo);
1127         if (rc == 0)
1128                 rc = ptlrpc_set_wait(einfo->ei_rqset);
1129         ptlrpc_set_destroy(einfo->ei_rqset);
1130         einfo->ei_rqset = NULL;
1131
1132         RETURN(rc);
1133 }
1134
1135 static inline int obd_enqueue(struct obd_export *exp,
1136                               struct obd_info *oinfo,
1137                               struct obd_enqueue_info *einfo)
1138 {
1139         int rc;
1140         ENTRY;
1141
1142         EXP_CHECK_OP(exp, enqueue);
1143         EXP_COUNTER_INCREMENT(exp, enqueue);
1144
1145         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo);
1146         RETURN(rc);
1147 }
1148
1149 static inline int obd_match(struct obd_export *exp, struct lov_stripe_md *ea,
1150                             __u32 type, ldlm_policy_data_t *policy, __u32 mode,
1151                             int *flags, void *data, struct lustre_handle *lockh)
1152 {
1153         int rc;
1154         ENTRY;
1155
1156         EXP_CHECK_OP(exp, match);
1157         EXP_COUNTER_INCREMENT(exp, match);
1158
1159         rc = OBP(exp->exp_obd, match)(exp, ea, type, policy, mode, flags, data,
1160                                       lockh);
1161         RETURN(rc);
1162 }
1163
1164 static inline int obd_change_cbdata(struct obd_export *exp,
1165                                     struct lov_stripe_md *lsm,
1166                                     ldlm_iterator_t it, void *data)
1167 {
1168         int rc;
1169         ENTRY;
1170
1171         EXP_CHECK_OP(exp, change_cbdata);
1172         EXP_COUNTER_INCREMENT(exp, change_cbdata);
1173
1174         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1175         RETURN(rc);
1176 }
1177
1178 static inline int obd_cancel(struct obd_export *exp,
1179                              struct lov_stripe_md *ea, __u32 mode,
1180                              struct lustre_handle *lockh)
1181 {
1182         int rc;
1183         ENTRY;
1184
1185         EXP_CHECK_OP(exp, cancel);
1186         EXP_COUNTER_INCREMENT(exp, cancel);
1187
1188         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1189         RETURN(rc);
1190 }
1191
1192 static inline int obd_cancel_unused(struct obd_export *exp,
1193                                     struct lov_stripe_md *ea, int flags,
1194                                     void *opaque)
1195 {
1196         int rc;
1197         ENTRY;
1198
1199         EXP_CHECK_OP(exp, cancel_unused);
1200         EXP_COUNTER_INCREMENT(exp, cancel_unused);
1201
1202         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1203         RETURN(rc);
1204 }
1205
1206 static inline int obd_join_lru(struct obd_export *exp,
1207                                struct lov_stripe_md *ea, int join)
1208 {
1209         int rc;
1210         ENTRY;
1211
1212         EXP_CHECK_OP(exp, join_lru);
1213         EXP_COUNTER_INCREMENT(exp, join_lru);
1214
1215         rc = OBP(exp->exp_obd, join_lru)(exp, ea, join);
1216         RETURN(rc);
1217 }
1218
1219 static inline int obd_pin(struct obd_export *exp, obd_id ino, __u32 gen,
1220                           int type, struct obd_client_handle *handle, int flag)
1221 {
1222         int rc;
1223         ENTRY;
1224
1225         EXP_CHECK_OP(exp, pin);
1226         EXP_COUNTER_INCREMENT(exp, pin);
1227
1228         rc = OBP(exp->exp_obd, pin)(exp, ino, gen, type, handle, flag);
1229         RETURN(rc);
1230 }
1231
1232 static inline int obd_unpin(struct obd_export *exp,
1233                             struct obd_client_handle *handle, int flag)
1234 {
1235         int rc;
1236         ENTRY;
1237
1238         EXP_CHECK_OP(exp, unpin);
1239         EXP_COUNTER_INCREMENT(exp, unpin);
1240
1241         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1242         RETURN(rc);
1243 }
1244
1245
1246 static inline void obd_import_event(struct obd_device *obd,
1247                                     struct obd_import *imp,
1248                                     enum obd_import_event event)
1249 {
1250         ENTRY;
1251         if (!obd) {
1252                 CERROR("NULL device\n");
1253                 EXIT;
1254                 return;
1255         }
1256         if (obd->obd_set_up && OBP(obd, import_event)) {
1257                 OBD_COUNTER_INCREMENT(obd, import_event);
1258                 OBP(obd, import_event)(obd, imp, event);
1259         }
1260         EXIT;
1261 }
1262
1263 static inline int obd_notify(struct obd_device *obd,
1264                              struct obd_device *watched,
1265                              enum obd_notify_event ev, void *data)
1266 {
1267         ENTRY;
1268         OBD_CHECK_DEV(obd);
1269
1270         /* the check for async_recov is a complete hack - I'm hereby
1271            overloading the meaning to also mean "this was called from
1272            mds_postsetup".  I know that my mds is able to handle notifies
1273            by this point, and it needs to get them to execute mds_postrecov. */
1274         if (!obd->obd_set_up && !obd->obd_async_recov) {
1275                 CDEBUG(D_HA, "obd %s not set up\n", obd->obd_name);
1276                 RETURN(-EINVAL);
1277         }
1278
1279         if (!OBP(obd, notify))
1280                 RETURN(-ENOSYS);
1281
1282         OBD_COUNTER_INCREMENT(obd, notify);
1283         RETURN(OBP(obd, notify)(obd, watched, ev, data));
1284 }
1285
1286 static inline int obd_notify_observer(struct obd_device *observer,
1287                                       struct obd_device *observed,
1288                                       enum obd_notify_event ev, void *data)
1289 {
1290         int rc1;
1291         int rc2;
1292
1293         struct obd_notify_upcall *onu;
1294
1295         if (observer->obd_observer)
1296                 rc1 = obd_notify(observer->obd_observer, observed, ev, data);
1297         else
1298                 rc1 = 0;
1299         /*
1300          * Also, call non-obd listener, if any
1301          */
1302         onu = &observer->obd_upcall;
1303         if (onu->onu_upcall != NULL)
1304                 rc2 = onu->onu_upcall(observer, observed, ev, onu->onu_owner);
1305         else
1306                 rc2 = 0;
1307
1308         return rc1 ?: rc2;
1309  }
1310
1311 static inline int obd_quotacheck(struct obd_export *exp,
1312                                  struct obd_quotactl *oqctl)
1313 {
1314         int rc;
1315         ENTRY;
1316
1317         EXP_CHECK_OP(exp, quotacheck);
1318         EXP_COUNTER_INCREMENT(exp, quotacheck);
1319
1320         rc = OBP(exp->exp_obd, quotacheck)(exp, oqctl);
1321         RETURN(rc);
1322 }
1323
1324 static inline int obd_quotactl(struct obd_export *exp,
1325                                struct obd_quotactl *oqctl)
1326 {
1327         int rc;
1328         ENTRY;
1329
1330         EXP_CHECK_OP(exp, quotactl);
1331         EXP_COUNTER_INCREMENT(exp, quotactl);
1332
1333         rc = OBP(exp->exp_obd, quotactl)(exp, oqctl);
1334         RETURN(rc);
1335 }
1336
1337 static inline int obd_health_check(struct obd_device *obd)
1338 {
1339         /* returns: 0 on healthy
1340          *         >0 on unhealthy + reason code/flag
1341          *            however the only suppored reason == 1 right now
1342          *            We'll need to define some better reasons
1343          *            or flags in the future.
1344          *         <0 on error
1345          */
1346         int rc;
1347         ENTRY;
1348
1349         /* don't use EXP_CHECK_OP, because NULL method is normal here */
1350         if (obd == NULL || !OBT(obd)) {
1351                 CERROR("cleaned up obd\n");
1352                 RETURN(-EOPNOTSUPP);
1353         }
1354         if (!obd->obd_set_up || obd->obd_stopping)
1355                 RETURN(0);
1356         if (!OBP(obd, health_check))
1357                 RETURN(0);
1358
1359         rc = OBP(obd, health_check)(obd);
1360         RETURN(rc);
1361 }
1362
1363 static inline int obd_register_observer(struct obd_device *obd,
1364                                         struct obd_device *observer)
1365 {
1366         ENTRY;
1367         OBD_CHECK_DEV(obd);
1368         if (obd->obd_observer && observer)
1369                 RETURN(-EALREADY);
1370         obd->obd_observer = observer;
1371         RETURN(0);
1372 }
1373
1374 /* OBD Metadata Support */
1375
1376 extern int obd_init_caches(void);
1377 extern void obd_cleanup_caches(void);
1378
1379 /* support routines */
1380 extern cfs_mem_cache_t *obdo_cachep;
1381 static inline struct obdo *obdo_alloc(void)
1382 {
1383         struct obdo *oa;
1384
1385         OBD_SLAB_ALLOC(oa, obdo_cachep, CFS_ALLOC_STD, sizeof(*oa));
1386
1387         return oa;
1388 }
1389
1390 static inline void obdo_free(struct obdo *oa)
1391 {
1392         OBD_SLAB_FREE(oa, obdo_cachep, sizeof(*oa));
1393 }
1394
1395 /* I'm as embarrassed about this as you are.
1396  *
1397  * <shaver> // XXX do not look into _superhack with remaining eye
1398  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
1399 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
1400
1401 /* sysctl.c */
1402 extern void obd_sysctl_init (void);
1403 extern void obd_sysctl_clean (void);
1404
1405 /* uuid.c  */
1406 typedef __u8 class_uuid_t[16];
1407 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
1408
1409 /* lustre_peer.c    */
1410 int lustre_uuid_to_peer(char *uuid, lnet_nid_t *peer_nid, int index);
1411 int class_add_uuid(char *uuid, __u64 nid);
1412 int class_del_uuid (char *uuid);
1413 void class_init_uuidlist(void);
1414 void class_exit_uuidlist(void);
1415
1416 #endif /* __LINUX_OBD_CLASS_H */