lustre/include/linux/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 __LINUX_CLASS_OBD_H
  24 #define __LINUX_CLASS_OBD_H
  25
  26 #ifndef __KERNEL__
  27 #include <sys/types.h>
  28 #include <portals/list.h>
  29 #else
  30 #include <asm/segment.h>
  31 #include <asm/uaccess.h>
  32 #include <linux/types.h>
  33 #include <linux/fs.h>
  34 #include <linux/time.h>
  35 #include <linux/timer.h>
  36 #endif
  37
  38 #include <linux/obd_support.h>
  39 #include <linux/lustre_import.h>
  40 #include <linux/lustre_net.h>
  41 #include <linux/obd.h>
  42 #include <linux/lustre_lib.h>
  43 #include <linux/lustre_idl.h>
  44 #include <linux/lprocfs_status.h>
  45 #include <linux/lustre_log.h>
  46
  47 /* OBD Device Declarations */
  48 #define MAX_OBD_DEVICES 256
  49 extern struct obd_device obd_dev[MAX_OBD_DEVICES];
  50
  51 /* OBD Operations Declarations */
  52 extern struct obd_device *class_conn2obd(struct lustre_handle *);
  53 extern struct obd_device *class_exp2obd(struct obd_export *);
  54
  55 /* genops.c */
  56 struct obd_export *class_conn2export(struct lustre_handle *);
  57 int class_register_type(struct obd_ops *ops, struct md_ops *md_ops,
  58                         struct lprocfs_vars *, char *nm);
  59 int class_unregister_type(char *nm);
  60
  61 struct obd_device *class_newdev(int *dev);
  62
  63 int class_name2dev(char *name);
  64 struct obd_device *class_name2obd(char *name);
  65 int class_uuid2dev(struct obd_uuid *uuid);
  66 struct obd_device *class_uuid2obd(struct obd_uuid *uuid);
  67 struct obd_device * class_find_client_obd(struct obd_uuid *tgt_uuid,
  68                                           char * typ_name,
  69                                           struct obd_uuid *grp_uuid);
  70 struct obd_device * class_devices_in_group(struct obd_uuid *grp_uuid,
  71                                            int *next);
  72
  73 int oig_init(struct obd_io_group **oig);
  74 void oig_add_one(struct obd_io_group *oig,
  75                   struct oig_callback_context *occ);
  76 void oig_complete_one(struct obd_io_group *oig,
  77                        struct oig_callback_context *occ, int rc);
  78 void oig_release(struct obd_io_group *oig);
  79 int oig_wait(struct obd_io_group *oig);
  80
  81 /* obd_config.c */
  82 int class_process_config(struct lustre_cfg *lcfg);
  83
  84 /* Passed as data param to class_config_parse_handler() */
  85 struct config_llog_instance {
  86         char * cfg_instance;
  87         struct obd_uuid cfg_uuid;
  88         ptl_nid_t cfg_local_nid;
  89 };
  90
  91 int class_config_process_llog(struct llog_ctxt *ctxt, char *name,
  92                               struct config_llog_instance *cfg);
  93 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
  94                            struct config_llog_instance *cfg);
  95
  96 struct lustre_profile {
  97         struct list_head lp_list;
  98         char * lp_profile;
  99         char * lp_osc;
 100         char * lp_mdc;
 101 };
 102
 103 struct lustre_profile *class_get_profile(char * prof);
 104 void class_del_profile(char *prof);
 105
 106 #define class_export_rpc_get(exp)                                       \
 107 ({                                                                      \
 108         atomic_inc(&(exp)->exp_rpc_count);                              \
 109         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",    \
 110                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 111         class_export_get(exp);                                          \
 112 })
 113
 114 #define class_export_rpc_put(exp)                                       \
 115 ({                                                                      \
 116         atomic_dec(&(exp)->exp_rpc_count);                              \
 117         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",    \
 118                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 119         class_export_put(exp);                                          \
 120 })
 121
 122 #define class_export_get(exp)                                                  \
 123 ({                                                                             \
 124         struct obd_export *exp_ = exp;                                         \
 125         atomic_inc(&exp_->exp_refcount);                                       \
 126         CDEBUG(D_INFO, "GETting export %p : new refcount %d\n", exp_,          \
 127                atomic_read(&exp_->exp_refcount));                              \
 128         exp_;                                                                  \
 129 })
 130
 131 #define class_export_put(exp)                                                  \
 132 do {                                                                           \
 133         LASSERT((exp) != NULL);                                                \
 134         CDEBUG(D_INFO, "PUTting export %p : new refcount %d\n", (exp),         \
 135                atomic_read(&(exp)->exp_refcount) - 1);                         \
 136         LASSERT(atomic_read(&(exp)->exp_refcount) > 0);                        \
 137         LASSERT(atomic_read(&(exp)->exp_refcount) < 0x5a5a5a);                 \
 138         __class_export_put(exp);                                               \
 139 } while (0)
 140 void __class_export_put(struct obd_export *);
 141 struct obd_export *class_new_export(struct obd_device *obddev);
 142 void class_unlink_export(struct obd_export *exp);
 143
 144 struct obd_import *class_import_get(struct obd_import *);
 145 void class_import_put(struct obd_import *);
 146 struct obd_import *class_new_import(void);
 147 void class_destroy_import(struct obd_import *exp);
 148
 149 struct obd_type *class_get_type(char *name);
 150 void class_put_type(struct obd_type *type);
 151 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 152                   struct obd_uuid *cluuid);
 153 int class_disconnect(struct obd_export *exp, int failover);
 154 void class_disconnect_exports(struct obd_device *obddev, int failover);
 155 /* generic operations shared by various OBD types */
 156 int class_multi_setup(struct obd_device *obddev, uint32_t len, void *data);
 157 int class_multi_cleanup(struct obd_device *obddev);
 158
 159 /* obdo.c */
 160 #ifdef __KERNEL__
 161 void obdo_from_iattr(struct obdo *oa, struct iattr *attr, unsigned ia_valid);
 162 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, obd_flag valid);
 163 void obdo_from_inode(struct obdo *dst, struct inode *src, obd_flag valid);
 164 void obdo_refresh_inode(struct inode *dst, struct obdo *src, obd_flag valid);
 165 void obdo_to_inode(struct inode *dst, struct obdo *src, obd_flag valid);
 166 #endif
 167 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_flag valid);
 168 int obdo_cmp_md(struct obdo *dst, struct obdo *src, obd_flag compare);
 169 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
 170
 171 static inline int obd_check_conn(struct lustre_handle *conn)
 172 {
 173         struct obd_device *obd;
 174         if (!conn) {
 175                 CERROR("NULL conn\n");
 176                 RETURN(-ENOTCONN);
 177         }
 178
 179         obd = class_conn2obd(conn);
 180         if (!obd) {
 181                 CERROR("NULL obd\n");
 182                 RETURN(-ENODEV);
 183         }
 184
 185         if (!obd->obd_attached) {
 186                 CERROR("obd %d not attached\n", obd->obd_minor);
 187                 RETURN(-ENODEV);
 188         }
 189
 190         if (!obd->obd_set_up) {
 191                 CERROR("obd %d not setup\n", obd->obd_minor);
 192                 RETURN(-ENODEV);
 193         }
 194
 195         if (!obd->obd_type) {
 196                 CERROR("obd %d not typed\n", obd->obd_minor);
 197                 RETURN(-ENODEV);
 198         }
 199
 200         if (!obd->obd_type->typ_ops) {
 201                 CERROR("obd_check_conn: obd %d no operations\n",
 202                        obd->obd_minor);
 203                 RETURN(-EOPNOTSUPP);
 204         }
 205         return 0;
 206 }
 207
 208
 209 #define OBT(dev)        (dev)->obd_type
 210 #define OBP(dev, op)    (dev)->obd_type->typ_ops->o_ ## op
 211 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
 212 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 213
 214 /* Ensure obd_setup: used for disconnect which might be called while
 215    an obd is stopping. */
 216 #define OBD_CHECK_SETUP(conn, exp)                                      \
 217 do {                                                                    \
 218         if (!(conn)) {                                                  \
 219                 CERROR("NULL connection\n");                            \
 220                 RETURN(-EINVAL);                                        \
 221         }                                                               \
 222                                                                         \
 223         exp = class_conn2export(conn);                                  \
 224         if (!(exp)) {                                                   \
 225                 CERROR("No export for conn "LPX64"\n", (conn)->cookie); \
 226                 RETURN(-EINVAL);                                        \
 227         }                                                               \
 228                                                                         \
 229         if (!(exp)->exp_obd->obd_set_up) {                              \
 230                 CERROR("Device %d not setup\n",                         \
 231                        (exp)->exp_obd->obd_minor);                      \
 232                 class_export_put(exp);                                  \
 233                 RETURN(-EINVAL);                                        \
 234         }                                                               \
 235 } while (0)
 236
 237 /* Ensure obd_setup and !obd_stopping. */
 238 #define OBD_CHECK_ACTIVE(conn, exp)                                     \
 239 do {                                                                    \
 240         if (!(conn)) {                                                  \
 241                 CERROR("NULL connection\n");                            \
 242                 RETURN(-EINVAL);                                        \
 243         }                                                               \
 244                                                                         \
 245         exp = class_conn2export(conn);                                  \
 246         if (!(exp)) {                                                   \
 247                 CERROR("No export for conn "LPX64"\n", (conn)->cookie); \
 248                 RETURN(-EINVAL);                                        \
 249         }                                                               \
 250                                                                         \
 251         if (!(exp)->exp_obd->obd_set_up || (exp)->exp_obd->obd_stopping) { \
 252                 CERROR("Device %d not setup\n",                         \
 253                        (exp)->exp_obd->obd_minor);                      \
 254                 class_export_put(exp);                                  \
 255                 RETURN(-EINVAL);                                        \
 256         }                                                               \
 257 } while (0)
 258
 259 /* Ensure obd_setup: used for cleanup which must be called
 260    while obd is stopping */
 261 #define OBD_CHECK_DEV_STOPPING(obd)                             \
 262 do {                                                            \
 263         if (!(obd)) {                                           \
 264                 CERROR("NULL device\n");                        \
 265                 RETURN(-ENODEV);                                \
 266         }                                                       \
 267                                                                 \
 268         if (!(obd)->obd_set_up) {                               \
 269                 CERROR("Device %d not setup\n",                 \
 270                        (obd)->obd_minor);                       \
 271                 RETURN(-ENODEV);                                \
 272         }                                                       \
 273                                                                 \
 274         if (!(obd)->obd_stopping) {                             \
 275                 CERROR("Device %d not stopping\n",              \
 276                        (obd)->obd_minor);                       \
 277                 RETURN(-ENODEV);                                \
 278         }                                                       \
 279 } while (0)
 280
 281 /* ensure obd_setup and !obd_stopping */
 282 #define OBD_CHECK_DEV_ACTIVE(obd)                               \
 283 do {                                                            \
 284         if (!(obd)) {                                           \
 285                 CERROR("NULL device\n");                        \
 286                 RETURN(-ENODEV);                                \
 287         }                                                       \
 288                                                                 \
 289         if (!(obd)->obd_set_up || (obd)->obd_stopping) {        \
 290                 CERROR("Device %d not setup\n",                 \
 291                        (obd)->obd_minor);                       \
 292                 RETURN(-ENODEV);                                \
 293         }                                                       \
 294 } while (0)
 295
 296
 297 #ifdef LPROCFS
 298 #define OBD_COUNTER_OFFSET(op)                                  \
 299         ((offsetof(struct obd_ops, o_ ## op) -                  \
 300           offsetof(struct obd_ops, o_iocontrol))                \
 301          / sizeof(((struct obd_ops *)(0))->o_iocontrol))
 302
 303 #define OBD_COUNTER_INCREMENT(obd, op)                          \
 304         if ((obd)->obd_stats != NULL) {                         \
 305                 unsigned int coffset;                           \
 306                 coffset = (unsigned int)(obd)->obd_cntr_base +  \
 307                         OBD_COUNTER_OFFSET(op);                 \
 308                 LASSERT(coffset < obd->obd_stats->ls_num);      \
 309                 lprocfs_counter_incr(obd->obd_stats, coffset);  \
 310         }
 311 /* FIXME: real accounting here */
 312 #define MD_COUNTER_INCREMENT(obd, op)
 313 #else
 314 #define OBD_COUNTER_OFFSET(op)
 315 #define OBD_COUNTER_INCREMENT(obd, op)
 316 #define MD_COUNTER_INCREMENT(obd, op)
 317 #endif
 318
 319 #define OBD_CHECK_MD_OP(obd, op, err)                           \
 320 do {                                                            \
 321         if (!OBT(obd) || !MDP((obd), op)) {\
 322                 if (err)                                        \
 323                         CERROR("obd_md" #op ": dev %d no operation\n",    \
 324                                obd->obd_minor);                 \
 325                 RETURN(err);                                    \
 326         }                                                       \
 327 } while (0)
 328
 329 #define EXP_CHECK_MD_OP(exp, op)                                \
 330 do {                                                            \
 331         if ((exp) == NULL) {                                    \
 332                 CERROR("obd_" #op ": NULL export\n");           \
 333                 RETURN(-ENODEV);                                \
 334         }                                                       \
 335         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 336                 CERROR("obd_" #op ": cleaned up obd\n");        \
 337                 RETURN(-EOPNOTSUPP);                            \
 338         }                                                       \
 339         if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
 340                 CERROR("obd_" #op ": dev %d no operation\n",    \
 341                        (exp)->exp_obd->obd_minor);              \
 342                 RETURN(-EOPNOTSUPP);                            \
 343         }                                                       \
 344 } while (0)
 345
 346 #define OBD_CHECK_OP(obd, op, err)                              \
 347 do {                                                            \
 348         if (!OBT(obd) || !OBP((obd), op)) {\
 349                 if (err)                                        \
 350                         CERROR("obd_" #op ": dev %d no operation\n",    \
 351                                obd->obd_minor);                         \
 352                 RETURN(err);                                    \
 353         }                                                       \
 354 } while (0)
 355
 356 #define EXP_CHECK_OP(exp, op)                                   \
 357 do {                                                            \
 358         if ((exp) == NULL) {                                    \
 359                 CERROR("obd_" #op ": NULL export\n");           \
 360                 RETURN(-ENODEV);                                \
 361         }                                                       \
 362         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 363                 CERROR("obd_" #op ": cleaned up obd\n");        \
 364                 RETURN(-EOPNOTSUPP);                            \
 365         }                                                       \
 366         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 367                 CERROR("obd_" #op ": dev %d no operation\n",    \
 368                        (exp)->exp_obd->obd_minor);              \
 369                 RETURN(-EOPNOTSUPP);                            \
 370         }                                                       \
 371 } while (0)
 372
 373 #define CTXT_CHECK_OP(ctxt, op, err)                                         \
 374 do {                                                            \
 375         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {                     \
 376                 if (err)                                        \
 377                         CERROR("lop_" #op ": dev %d no operation\n",    \
 378                                ctxt->loc_obd->obd_minor);                         \
 379                 RETURN(err);                                    \
 380         }                                                       \
 381 } while (0)
 382
 383 static inline int obd_get_info(struct obd_export *exp, __u32 keylen,
 384                                void *key, __u32 *vallen, void *val)
 385 {
 386         int rc;
 387         ENTRY;
 388
 389         EXP_CHECK_OP(exp, get_info);
 390         OBD_COUNTER_INCREMENT(exp->exp_obd, get_info);
 391
 392         rc = OBP(exp->exp_obd, get_info)(exp, keylen, key, vallen, val);
 393         RETURN(rc);
 394 }
 395
 396 static inline int obd_set_info(struct obd_export *exp, obd_count keylen,
 397                                void *key, obd_count vallen, void *val)
 398 {
 399         int rc;
 400         ENTRY;
 401
 402         EXP_CHECK_OP(exp, set_info);
 403         OBD_COUNTER_INCREMENT(exp->exp_obd, set_info);
 404
 405         rc = OBP(exp->exp_obd, set_info)(exp, keylen, key, vallen, val);
 406         RETURN(rc);
 407 }
 408
 409 static inline int obd_setup(struct obd_device *obd, int datalen, void *data)
 410 {
 411         int rc;
 412         ENTRY;
 413
 414         OBD_CHECK_OP(obd, setup, -EOPNOTSUPP);
 415         OBD_COUNTER_INCREMENT(obd, setup);
 416
 417         rc = OBP(obd, setup)(obd, datalen, data);
 418         RETURN(rc);
 419 }
 420
 421 static inline int obd_precleanup(struct obd_device *obd, int flags)
 422 {
 423         int rc;
 424         ENTRY;
 425
 426         OBD_CHECK_OP(obd, precleanup, 0);
 427         OBD_COUNTER_INCREMENT(obd, precleanup);
 428
 429         rc = OBP(obd, precleanup)(obd, flags);
 430         RETURN(rc);
 431 }
 432
 433 static inline int obd_cleanup(struct obd_device *obd, int flags)
 434 {
 435         int rc;
 436         ENTRY;
 437
 438         OBD_CHECK_DEV_STOPPING(obd);
 439         OBD_CHECK_OP(obd, cleanup, 0);
 440         OBD_COUNTER_INCREMENT(obd, cleanup);
 441
 442         rc = OBP(obd, cleanup)(obd, flags);
 443         RETURN(rc);
 444 }
 445
 446 static inline int
 447 obd_process_config(struct obd_device *obd, int datalen, void *data)
 448 {
 449         int rc;
 450         ENTRY;
 451
 452         OBD_CHECK_OP(obd, process_config, -EOPNOTSUPP);
 453         OBD_COUNTER_INCREMENT(obd, process_config);
 454
 455         rc = OBP(obd, process_config)(obd, datalen, data);
 456         RETURN(rc);
 457 }
 458
 459 /* Pack an in-memory MD struct for storage on disk.
 460  * Returns +ve size of packed MD (0 for free), or -ve error.
 461  *
 462  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 463  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 464  * If @*disk_tgt == NULL, it will be allocated
 465  */
 466 static inline int obd_packmd(struct obd_export *exp,
 467                              struct lov_mds_md **disk_tgt,
 468                              struct lov_stripe_md *mem_src)
 469 {
 470         int rc;
 471         ENTRY;
 472
 473         EXP_CHECK_OP(exp, packmd);
 474         OBD_COUNTER_INCREMENT(exp->exp_obd, packmd);
 475
 476         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 477         RETURN(rc);
 478 }
 479
 480 static inline int obd_size_diskmd(struct obd_export *exp,
 481                                   struct lov_stripe_md *mem_src)
 482 {
 483         return obd_packmd(exp, NULL, mem_src);
 484 }
 485
 486 /* helper functions */
 487 static inline int obd_alloc_diskmd(struct obd_export *exp,
 488                                    struct lov_mds_md **disk_tgt)
 489 {
 490         LASSERT(disk_tgt);
 491         LASSERT(*disk_tgt == NULL);
 492         return obd_packmd(exp, disk_tgt, NULL);
 493 }
 494
 495 static inline int obd_free_diskmd(struct obd_export *exp,
 496                                   struct lov_mds_md **disk_tgt)
 497 {
 498         LASSERT(disk_tgt);
 499         LASSERT(*disk_tgt);
 500         return obd_packmd(exp, disk_tgt, NULL);
 501 }
 502
 503 /* Unpack an MD struct from disk to in-memory format.
 504  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 505  *
 506  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 507  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 508  * If @*mem_tgt == NULL, it will be allocated
 509  */
 510 static inline int obd_unpackmd(struct obd_export *exp,
 511                                struct lov_stripe_md **mem_tgt,
 512                                struct lov_mds_md *disk_src,
 513                                int disk_len)
 514 {
 515         int rc;
 516         ENTRY;
 517
 518         EXP_CHECK_OP(exp, unpackmd);
 519         OBD_COUNTER_INCREMENT(exp->exp_obd, unpackmd);
 520
 521         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 522         RETURN(rc);
 523 }
 524
 525 /* helper functions */
 526 static inline int obd_alloc_memmd(struct obd_export *exp,
 527                                   struct lov_stripe_md **mem_tgt)
 528 {
 529         LASSERT(mem_tgt);
 530         LASSERT(*mem_tgt == NULL);
 531         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 532 }
 533
 534 static inline int obd_free_memmd(struct obd_export *exp,
 535                                  struct lov_stripe_md **mem_tgt)
 536 {
 537         LASSERT(mem_tgt);
 538         LASSERT(*mem_tgt);
 539         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 540 }
 541
 542 static inline int obd_revalidate_md(struct obd_export *exp, struct obdo *obdo,
 543                                     struct lov_stripe_md *ea,
 544                                     struct obd_trans_info *oti)
 545 {
 546         int rc;
 547         ENTRY;
 548
 549         EXP_CHECK_OP(exp, revalidate_md);
 550         OBD_COUNTER_INCREMENT(exp->exp_obd, revalidate_md);
 551
 552         rc = OBP(exp->exp_obd, revalidate_md)(exp, obdo, ea, oti);
 553         RETURN(rc);
 554 }
 555
 556 static inline int obd_create(struct obd_export *exp, struct obdo *obdo,
 557                              struct lov_stripe_md **ea,
 558                              struct obd_trans_info *oti)
 559 {
 560         int rc;
 561         ENTRY;
 562
 563         EXP_CHECK_OP(exp, create);
 564         OBD_COUNTER_INCREMENT(exp->exp_obd, create);
 565
 566         rc = OBP(exp->exp_obd, create)(exp, obdo, ea, oti);
 567         RETURN(rc);
 568 }
 569
 570 static inline int obd_destroy(struct obd_export *exp, struct obdo *obdo,
 571                               struct lov_stripe_md *ea,
 572                               struct obd_trans_info *oti)
 573 {
 574         int rc;
 575         ENTRY;
 576
 577         EXP_CHECK_OP(exp, destroy);
 578         OBD_COUNTER_INCREMENT(exp->exp_obd, destroy);
 579
 580         rc = OBP(exp->exp_obd, destroy)(exp, obdo, ea, oti);
 581         RETURN(rc);
 582 }
 583
 584 static inline int obd_getattr(struct obd_export *exp, struct obdo *obdo,
 585                               struct lov_stripe_md *ea)
 586 {
 587         int rc;
 588         ENTRY;
 589
 590         EXP_CHECK_OP(exp, getattr);
 591         OBD_COUNTER_INCREMENT(exp->exp_obd, getattr);
 592
 593         rc = OBP(exp->exp_obd, getattr)(exp, obdo, ea);
 594         RETURN(rc);
 595 }
 596
 597 static inline int obd_getattr_async(struct obd_export *exp,
 598                                     struct obdo *obdo, struct lov_stripe_md *ea,
 599                                     struct ptlrpc_request_set *set)
 600 {
 601         int rc;
 602         ENTRY;
 603
 604         EXP_CHECK_OP(exp, getattr);
 605         OBD_COUNTER_INCREMENT(exp->exp_obd, getattr);
 606
 607         rc = OBP(exp->exp_obd, getattr_async)(exp, obdo, ea, set);
 608         RETURN(rc);
 609 }
 610
 611 static inline int obd_setattr(struct obd_export *exp, struct obdo *obdo,
 612                               struct lov_stripe_md *ea,
 613                               struct obd_trans_info *oti)
 614 {
 615         int rc;
 616         ENTRY;
 617
 618         EXP_CHECK_OP(exp, setattr);
 619         OBD_COUNTER_INCREMENT(exp->exp_obd, setattr);
 620
 621         rc = OBP(exp->exp_obd, setattr)(exp, obdo, ea, oti);
 622         RETURN(rc);
 623 }
 624
 625 static inline int obd_connect(struct lustre_handle *conn,
 626                               struct obd_device *obd, struct obd_uuid *cluuid,
 627                               unsigned long connect_flags)
 628 {
 629         int rc;
 630         ENTRY;
 631
 632         OBD_CHECK_DEV_ACTIVE(obd);
 633         OBD_CHECK_OP(obd, connect, -EOPNOTSUPP);
 634         OBD_COUNTER_INCREMENT(obd, connect);
 635
 636         rc = OBP(obd, connect)(conn, obd, cluuid, connect_flags);
 637         RETURN(rc);
 638 }
 639
 640 static inline int obd_disconnect(struct obd_export *exp, int flags)
 641 {
 642         int rc;
 643         ENTRY;
 644
 645         EXP_CHECK_OP(exp, disconnect);
 646         OBD_COUNTER_INCREMENT(exp->exp_obd, disconnect);
 647
 648         rc = OBP(exp->exp_obd, disconnect)(exp, flags);
 649         RETURN(rc);
 650 }
 651
 652 static inline int obd_init_export(struct obd_export *exp)
 653 {
 654         int rc = 0;
 655
 656         ENTRY;
 657         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 658             OBP((exp)->exp_obd, init_export))
 659                 rc = OBP(exp->exp_obd, init_export)(exp);
 660         RETURN(rc);
 661 }
 662
 663 static inline int obd_destroy_export(struct obd_export *exp)
 664 {
 665         ENTRY;
 666         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 667             OBP((exp)->exp_obd, destroy_export))
 668                 OBP(exp->exp_obd, destroy_export)(exp);
 669         RETURN(0);
 670 }
 671
 672 static inline struct dentry *
 673 obd_lvfs_fid2dentry(struct obd_export *exp, __u64 id_ino, __u32 gen, __u64 gr)
 674 {
 675         LASSERT(exp->exp_obd);
 676
 677         return lvfs_fid2dentry(&exp->exp_obd->obd_lvfs_ctxt, id_ino, gen, gr,
 678                                exp->exp_obd);
 679 }
 680
 681 #ifndef time_before
 682 #define time_before(t1, t2) ((long)t2 - (long)t1 > 0)
 683 #endif
 684
 685 /* @max_age is the oldest time in jiffies that we accept using a cached data.
 686  * If the cache is older than @max_age we will get a new value from the
 687  * target.  Use a value of "jiffies + HZ" to guarantee freshness. */
 688 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
 689                              unsigned long max_age)
 690 {
 691         int rc = 0;
 692         ENTRY;
 693
 694         if (obd == NULL)
 695                 RETURN(-EINVAL);
 696
 697         OBD_CHECK_OP(obd, statfs, -EOPNOTSUPP);
 698         OBD_COUNTER_INCREMENT(obd, statfs);
 699
 700         CDEBUG(D_SUPER, "osfs %lu, max_age %lu\n", obd->obd_osfs_age, max_age);
 701         if (time_before(obd->obd_osfs_age, max_age)) {
 702                 rc = OBP(obd, statfs)(obd, osfs, max_age);
 703                 if (rc == 0) {
 704                         spin_lock(&obd->obd_osfs_lock);
 705                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
 706                         obd->obd_osfs_age = jiffies;
 707                         spin_unlock(&obd->obd_osfs_lock);
 708                 }
 709         } else {
 710                 CDEBUG(D_SUPER, "using cached obd_statfs data\n");
 711                 spin_lock(&obd->obd_osfs_lock);
 712                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
 713                 spin_unlock(&obd->obd_osfs_lock);
 714         }
 715         RETURN(rc);
 716 }
 717
 718 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
 719                            struct lov_stripe_md *ea, obd_size start,
 720                            obd_size end)
 721 {
 722         int rc;
 723         ENTRY;
 724
 725         OBD_CHECK_OP(exp->exp_obd, sync, -EOPNOTSUPP);
 726         OBD_COUNTER_INCREMENT(exp->exp_obd, sync);
 727
 728         rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end);
 729         RETURN(rc);
 730 }
 731
 732 static inline int obd_punch(struct obd_export *exp, struct obdo *oa,
 733                             struct lov_stripe_md *ea, obd_size start,
 734                             obd_size end, struct obd_trans_info *oti)
 735 {
 736         int rc;
 737         ENTRY;
 738
 739         EXP_CHECK_OP(exp, punch);
 740         OBD_COUNTER_INCREMENT(exp->exp_obd, punch);
 741
 742         rc = OBP(exp->exp_obd, punch)(exp, oa, ea, start, end, oti);
 743         RETURN(rc);
 744 }
 745
 746 static inline int obd_brw(int cmd, struct obd_export *exp, struct obdo *oa,
 747                           struct lov_stripe_md *ea, obd_count oa_bufs,
 748                           struct brw_page *pg, struct obd_trans_info *oti)
 749 {
 750         int rc;
 751         ENTRY;
 752
 753         EXP_CHECK_OP(exp, brw);
 754         OBD_COUNTER_INCREMENT(exp->exp_obd, brw);
 755
 756         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
 757                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
 758                        "or OBD_BRW_CHECK\n");
 759                 LBUG();
 760         }
 761
 762         rc = OBP(exp->exp_obd, brw)(cmd, exp, oa, ea, oa_bufs, pg, oti);
 763         RETURN(rc);
 764 }
 765
 766 static inline int obd_brw_async(int cmd, struct obd_export *exp,
 767                                 struct obdo *oa, struct lov_stripe_md *ea,
 768                                 obd_count oa_bufs, struct brw_page *pg,
 769                                 struct ptlrpc_request_set *set,
 770                                 struct obd_trans_info *oti)
 771 {
 772         int rc;
 773         ENTRY;
 774
 775         EXP_CHECK_OP(exp, brw_async);
 776         OBD_COUNTER_INCREMENT(exp->exp_obd, brw_async);
 777
 778         if (!(cmd & OBD_BRW_RWMASK)) {
 779                 CERROR("obd_brw: cmd must be OBD_BRW_READ or OBD_BRW_WRITE\n");
 780                 LBUG();
 781         }
 782
 783         rc = OBP(exp->exp_obd, brw_async)(cmd, exp, oa, ea, oa_bufs, pg, set,
 784                                           oti);
 785         RETURN(rc);
 786 }
 787
 788 static inline  int obd_prep_async_page(struct obd_export *exp,
 789                                        struct lov_stripe_md *lsm,
 790                                        struct lov_oinfo *loi,
 791                                        struct page *page, obd_off offset,
 792                                        struct obd_async_page_ops *ops,
 793                                        void *data, void **res)
 794 {
 795         int ret;
 796         ENTRY;
 797
 798         OBD_CHECK_OP(exp->exp_obd, prep_async_page, -EOPNOTSUPP);
 799         OBD_COUNTER_INCREMENT(exp->exp_obd, prep_async_page);
 800
 801         ret = OBP(exp->exp_obd, prep_async_page)(exp, lsm, loi, page, offset,
 802                                                  ops, data, res);
 803         RETURN(ret);
 804 }
 805
 806 static inline int obd_queue_async_io(struct obd_export *exp,
 807                                      struct lov_stripe_md *lsm,
 808                                      struct lov_oinfo *loi, void *cookie,
 809                                      int cmd, obd_off off, int count,
 810                                      obd_flag brw_flags, obd_flag async_flags)
 811 {
 812         int rc;
 813         ENTRY;
 814
 815         OBD_CHECK_OP(exp->exp_obd, queue_async_io, -EOPNOTSUPP);
 816         OBD_COUNTER_INCREMENT(exp->exp_obd, queue_async_io);
 817         LASSERT(cmd & OBD_BRW_RWMASK);
 818
 819         rc = OBP(exp->exp_obd, queue_async_io)(exp, lsm, loi, cookie, cmd, off,
 820                                                count, brw_flags, async_flags);
 821         RETURN(rc);
 822 }
 823
 824 static inline int obd_set_async_flags(struct obd_export *exp,
 825                                       struct lov_stripe_md *lsm,
 826                                       struct lov_oinfo *loi, void *cookie,
 827                                       obd_flag async_flags)
 828 {
 829         int rc;
 830         ENTRY;
 831
 832         OBD_CHECK_OP(exp->exp_obd, set_async_flags, -EOPNOTSUPP);
 833         OBD_COUNTER_INCREMENT(exp->exp_obd, set_async_flags);
 834
 835         rc = OBP(exp->exp_obd, set_async_flags)(exp, lsm, loi, cookie,
 836                                                 async_flags);
 837         RETURN(rc);
 838 }
 839
 840 static inline int obd_queue_group_io(struct obd_export *exp,
 841                                      struct lov_stripe_md *lsm,
 842                                      struct lov_oinfo *loi,
 843                                      struct obd_io_group *oig,
 844                                      void *cookie, int cmd, obd_off off,
 845                                      int count, obd_flag brw_flags,
 846                                      obd_flag async_flags)
 847 {
 848         int rc;
 849         ENTRY;
 850
 851         OBD_CHECK_OP(exp->exp_obd, queue_group_io, -EOPNOTSUPP);
 852         OBD_COUNTER_INCREMENT(exp->exp_obd, queue_group_io);
 853         LASSERT(cmd & OBD_BRW_RWMASK);
 854
 855         rc = OBP(exp->exp_obd, queue_group_io)(exp, lsm, loi, oig, cookie,
 856                                                cmd, off, count, brw_flags,
 857                                                async_flags);
 858         RETURN(rc);
 859 }
 860
 861 static inline int obd_trigger_group_io(struct obd_export *exp,
 862                                        struct lov_stripe_md *lsm,
 863                                        struct lov_oinfo *loi,
 864                                        struct obd_io_group *oig)
 865 {
 866         int rc;
 867         ENTRY;
 868
 869         OBD_CHECK_OP(exp->exp_obd, trigger_group_io, -EOPNOTSUPP);
 870         OBD_COUNTER_INCREMENT(exp->exp_obd, trigger_group_io);
 871
 872         rc = OBP(exp->exp_obd, trigger_group_io)(exp, lsm, loi, oig);
 873         RETURN(rc);
 874 }
 875
 876 static inline int obd_teardown_async_page(struct obd_export *exp,
 877                                           struct lov_stripe_md *lsm,
 878                                           struct lov_oinfo *loi, void *cookie)
 879 {
 880         int rc;
 881         ENTRY;
 882
 883         OBD_CHECK_OP(exp->exp_obd, teardown_async_page, -EOPNOTSUPP);
 884         OBD_COUNTER_INCREMENT(exp->exp_obd, teardown_async_page);
 885
 886         rc = OBP(exp->exp_obd, teardown_async_page)(exp, lsm, loi, cookie);
 887         RETURN(rc);
 888 }
 889
 890 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
 891                              int objcount, struct obd_ioobj *obj,
 892                              int niocount, struct niobuf_remote *remote,
 893                              struct niobuf_local *local,
 894                              struct obd_trans_info *oti)
 895 {
 896         int rc;
 897         ENTRY;
 898
 899         OBD_CHECK_OP(exp->exp_obd, preprw, -EOPNOTSUPP);
 900         OBD_COUNTER_INCREMENT(exp->exp_obd, preprw);
 901
 902         rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, niocount,
 903                                        remote, local, oti);
 904         RETURN(rc);
 905 }
 906
 907 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
 908                                int objcount, struct obd_ioobj *obj,
 909                                int niocount, struct niobuf_local *local,
 910                                struct obd_trans_info *oti, int rc)
 911 {
 912         ENTRY;
 913
 914         OBD_CHECK_OP(exp->exp_obd, commitrw, -EOPNOTSUPP);
 915         OBD_COUNTER_INCREMENT(exp->exp_obd, commitrw);
 916
 917         rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj, niocount,
 918                                          local, oti, rc);
 919         RETURN(rc);
 920 }
 921
 922 static inline int obd_do_cow(struct obd_export *exp, struct obd_ioobj *obj,
 923                             int objcount,struct niobuf_remote *rnb)
 924 {
 925         int rc;
 926         ENTRY;
 927
 928         /* there are cases when write_extents is not implemented. */
 929         if (!OBP(exp->exp_obd, do_cow))
 930                 RETURN(0);
 931
 932         OBD_COUNTER_INCREMENT(exp->exp_obd, do_cow);
 933
 934         rc = OBP(exp->exp_obd, do_cow)(exp, obj, objcount, rnb);
 935
 936         RETURN(rc);
 937 }
 938
 939 static inline int obd_write_extents(struct obd_export *exp,
 940                                     struct obd_ioobj *obj,
 941                                     int objcount, int niocount,
 942                                     struct niobuf_local *local,
 943                                     int rc)
 944 {
 945         ENTRY;
 946
 947         /* there are cases when write_extents is not implemented. */
 948         if (!OBP(exp->exp_obd, write_extents))
 949                 RETURN(0);
 950
 951         OBD_COUNTER_INCREMENT(exp->exp_obd, write_extents);
 952
 953         rc = OBP(exp->exp_obd, write_extents)(exp, obj, objcount, niocount,
 954                                               local, rc);
 955         RETURN(rc);
 956 }
 957
 958 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
 959                                 int len, void *karg, void *uarg)
 960 {
 961         int rc;
 962         ENTRY;
 963
 964         EXP_CHECK_OP(exp, iocontrol);
 965         OBD_COUNTER_INCREMENT(exp->exp_obd, iocontrol);
 966
 967         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
 968         RETURN(rc);
 969 }
 970
 971 static inline int obd_enqueue(struct obd_export *exp, struct lov_stripe_md *ea,
 972                               __u32 type, ldlm_policy_data_t *policy,
 973                               __u32 mode, int *flags, void *bl_cb, void *cp_cb,
 974                               void *gl_cb, void *data, __u32 lvb_len,
 975                               void *lvb_swabber, struct lustre_handle *lockh)
 976 {
 977         int rc;
 978         ENTRY;
 979
 980         EXP_CHECK_OP(exp, enqueue);
 981         OBD_COUNTER_INCREMENT(exp->exp_obd, enqueue);
 982
 983         rc = OBP(exp->exp_obd, enqueue)(exp, ea, type, policy, mode, flags,
 984                                         bl_cb, cp_cb, gl_cb, data, lvb_len,
 985                                         lvb_swabber, lockh);
 986         RETURN(rc);
 987 }
 988
 989 static inline int obd_match(struct obd_export *exp, struct lov_stripe_md *ea,
 990                             __u32 type, ldlm_policy_data_t *policy, __u32 mode,
 991                             int *flags, void *data, struct lustre_handle *lockh)
 992 {
 993         int rc;
 994         ENTRY;
 995
 996         EXP_CHECK_OP(exp, match);
 997         OBD_COUNTER_INCREMENT(exp->exp_obd, match);
 998
 999         rc = OBP(exp->exp_obd, match)(exp, ea, type, policy, mode, flags, data,
1000                                       lockh);
1001         RETURN(rc);
1002 }
1003
1004 static inline int obd_change_cbdata(struct obd_export *exp,
1005                                     struct lov_stripe_md *lsm,
1006                                     ldlm_iterator_t it, void *data)
1007 {
1008         int rc;
1009         ENTRY;
1010
1011         EXP_CHECK_OP(exp, change_cbdata);
1012         OBD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata);
1013
1014         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1015         RETURN(rc);
1016 }
1017
1018 static inline int obd_cancel(struct obd_export *exp,
1019                              struct lov_stripe_md *ea, __u32 mode,
1020                              struct lustre_handle *lockh)
1021 {
1022         int rc;
1023         ENTRY;
1024
1025         EXP_CHECK_OP(exp, cancel);
1026         OBD_COUNTER_INCREMENT(exp->exp_obd, cancel);
1027
1028         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1029         RETURN(rc);
1030 }
1031
1032 static inline int obd_cancel_unused(struct obd_export *exp,
1033                                     struct lov_stripe_md *ea, int flags,
1034                                     void *opaque)
1035 {
1036         int rc;
1037         ENTRY;
1038
1039         EXP_CHECK_OP(exp, cancel_unused);
1040         OBD_COUNTER_INCREMENT(exp->exp_obd, cancel_unused);
1041
1042         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1043         RETURN(rc);
1044 }
1045
1046
1047 static inline int obd_san_preprw(int cmd, struct obd_export *exp,
1048                                  struct obdo *oa,
1049                                  int objcount, struct obd_ioobj *obj,
1050                                  int niocount, struct niobuf_remote *remote)
1051 {
1052         int rc;
1053
1054         EXP_CHECK_OP(exp, preprw);
1055         OBD_COUNTER_INCREMENT(exp->exp_obd, preprw);
1056
1057         rc = OBP(exp->exp_obd, san_preprw)(cmd, exp, oa, objcount, obj,
1058                                            niocount, remote);
1059         class_export_put(exp);
1060         return(rc);
1061 }
1062
1063 static inline int obd_pin(struct obd_export *exp, obd_id ino, __u32 gen,
1064                           int type, struct obd_client_handle *handle, int flag)
1065 {
1066         int rc;
1067
1068         EXP_CHECK_OP(exp, pin);
1069         OBD_COUNTER_INCREMENT(exp->exp_obd, pin);
1070
1071         rc = OBP(exp->exp_obd, pin)(exp, ino, gen, type, handle, flag);
1072         return(rc);
1073 }
1074
1075 static inline int obd_unpin(struct obd_export *exp,
1076                             struct obd_client_handle *handle, int flag)
1077 {
1078         int rc;
1079
1080         EXP_CHECK_OP(exp, unpin);
1081         OBD_COUNTER_INCREMENT(exp->exp_obd, unpin);
1082
1083         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1084         return(rc);
1085 }
1086
1087
1088 static inline void obd_import_event(struct obd_device *obd,
1089                                     struct obd_import *imp,
1090                                     enum obd_import_event event)
1091 {
1092         if (obd->obd_set_up && OBP(obd, import_event)) {
1093                 OBD_COUNTER_INCREMENT(obd, import_event);
1094                 OBP(obd, import_event)(obd, imp, event);
1095         }
1096 }
1097
1098 static inline int obd_llog_connect(struct obd_device *obd,
1099                                         struct llogd_conn_body *body)
1100 {
1101         ENTRY;
1102         if (!obd->obd_set_up) {
1103                 CERROR("obd %s not set up\n", obd->obd_name);
1104                 return -EINVAL;
1105         }
1106
1107         if (!OBP(obd, llog_connect)) {
1108                 CERROR("obd %s has no llog_connect handler\n", obd->obd_name);
1109                 return -ENOSYS;
1110         }
1111
1112         return OBP(obd, llog_connect)(obd, body);
1113 }
1114
1115 static inline int obd_notify(struct obd_device *obd,
1116                              struct obd_device *watched,
1117                              int active)
1118 {
1119         if (!obd->obd_set_up) {
1120                 CERROR("obd %s not set up\n", obd->obd_name);
1121                 return -EINVAL;
1122         }
1123
1124         if (!OBP(obd, notify)) {
1125                 CERROR("obd %s has no notify handler\n", obd->obd_name);
1126                 return -ENOSYS;
1127         }
1128
1129         OBD_COUNTER_INCREMENT(obd, notify);
1130         return OBP(obd, notify)(obd, watched, active);
1131 }
1132
1133 static inline int obd_register_observer(struct obd_device *obd,
1134                                         struct obd_device *observer)
1135 {
1136         ENTRY;
1137         if (obd->obd_observer && observer)
1138                 RETURN(-EALREADY);
1139         obd->obd_observer = observer;
1140         RETURN(0);
1141 }
1142
1143 static inline int obd_init_ea_size(struct obd_export *exp, int size, int size2)
1144 {
1145         int rc;
1146         ENTRY;
1147         LASSERT(OBP(exp->exp_obd, init_ea_size) != NULL);
1148         OBD_COUNTER_INCREMENT(exp->exp_obd, init_ea_size);
1149         rc = OBP(exp->exp_obd, init_ea_size)(exp, size, size2);
1150         RETURN(rc);
1151 }
1152
1153 static inline int md_getstatus(struct obd_export *exp, struct ll_fid *fid)
1154 {
1155         int rc;
1156
1157         EXP_CHECK_MD_OP(exp, getstatus);
1158         MD_COUNTER_INCREMENT(exp->exp_obd, getstatus);
1159         rc = MDP(exp->exp_obd, getstatus)(exp, fid);
1160         RETURN(rc);
1161 }
1162
1163 /* this function notifies MDC, that inode described by @fid gets removed from
1164  * memory.*/
1165 static inline int md_delete_object(struct obd_export *exp,
1166                                    struct ll_fid *fid)
1167 {
1168         int rc;
1169         ENTRY;
1170
1171         /* as this method only notifies MDC that inode gets deleted, we can
1172          * return zero if method is not implemented, this means, that OBD does
1173          * not need such a notification. */
1174         if (MDP(exp->exp_obd, delete_object) == NULL)
1175                 RETURN(0);
1176
1177         MD_COUNTER_INCREMENT(exp->exp_obd, delete_object);
1178         rc = MDP(exp->exp_obd, delete_object)(exp, fid);
1179         RETURN(rc);
1180 }
1181
1182 static inline int md_getattr(struct obd_export *exp, struct ll_fid *fid,
1183                              unsigned long valid, unsigned int ea_size,
1184                              struct ptlrpc_request **request)
1185 {
1186         int rc;
1187         ENTRY;
1188         EXP_CHECK_MD_OP(exp, getattr);
1189         MD_COUNTER_INCREMENT(exp->exp_obd, getattr);
1190         rc = MDP(exp->exp_obd, getattr)(exp, fid, valid, ea_size, request);
1191         RETURN(rc);
1192 }
1193
1194 static inline int md_change_cbdata(struct obd_export *exp, struct ll_fid *fid,
1195                                    ldlm_iterator_t it, void *data)
1196 {
1197         int rc;
1198         ENTRY;
1199         EXP_CHECK_MD_OP(exp, change_cbdata);
1200         MD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata);
1201         rc = MDP(exp->exp_obd, change_cbdata)(exp, fid, it, data);
1202         RETURN(rc);
1203 }
1204
1205 static inline int md_change_cbdata_name(struct obd_export *exp,
1206                                         struct ll_fid *fid, char *name,
1207                                         int namelen, struct ll_fid *fid2,
1208                                         ldlm_iterator_t it, void *data)
1209 {
1210         int rc;
1211
1212         /* this seem to be needed only for lmv. */
1213         if (!MDP(exp->exp_obd, change_cbdata_name))
1214                 return 0;
1215
1216         ENTRY;
1217
1218         MD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata_name);
1219         rc = MDP(exp->exp_obd, change_cbdata_name)(exp, fid, name, namelen,
1220                                                    fid2, it, data);
1221         RETURN(rc);
1222 }
1223
1224 static inline int md_close(struct obd_export *exp, struct obdo *obdo,
1225                            struct obd_client_handle *och,
1226                            struct ptlrpc_request **request)
1227 {
1228         int rc;
1229         ENTRY;
1230         EXP_CHECK_MD_OP(exp, close);
1231         MD_COUNTER_INCREMENT(exp->exp_obd, close);
1232         rc = MDP(exp->exp_obd, close)(exp, obdo, och, request);
1233         RETURN(rc);
1234 }
1235
1236 static inline int md_create(struct obd_export *exp, struct mdc_op_data *op_data,
1237                             const void *data, int datalen, int mode,
1238                             __u32 uid, __u32 gid, __u64 rdev,
1239                             struct ptlrpc_request **request)
1240 {
1241         int rc;
1242         ENTRY;
1243         EXP_CHECK_MD_OP(exp, create);
1244         MD_COUNTER_INCREMENT(exp->exp_obd, create);
1245         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1246                                        uid, gid, rdev, request);
1247         RETURN(rc);
1248 }
1249
1250 static inline int md_done_writing(struct obd_export *exp, struct obdo *obdo)
1251 {
1252         int rc;
1253         ENTRY;
1254         EXP_CHECK_MD_OP(exp, done_writing);
1255         MD_COUNTER_INCREMENT(exp->exp_obd, done_writing);
1256         rc = MDP(exp->exp_obd, done_writing)(exp, obdo);
1257         RETURN(rc);
1258 }
1259
1260 static inline int md_enqueue(struct obd_export *exp, int lock_type,
1261                              struct lookup_intent *it, int lock_mode,
1262                              struct mdc_op_data *data,
1263                              struct lustre_handle *lockh,
1264                              void *lmm, int lmmsize,
1265                              ldlm_completion_callback cb_completion,
1266                              ldlm_blocking_callback cb_blocking,
1267                              void *cb_data)
1268 {
1269         int rc;
1270         ENTRY;
1271         EXP_CHECK_MD_OP(exp, enqueue);
1272         MD_COUNTER_INCREMENT(exp->exp_obd, enqueue);
1273         rc = MDP(exp->exp_obd, enqueue)(exp, lock_type, it, lock_mode,
1274                                         data, lockh, lmm, lmmsize,
1275                                         cb_completion, cb_blocking,
1276                                         cb_data);
1277         RETURN(rc);
1278 }
1279
1280 static inline int md_getattr_name(struct obd_export *exp, struct ll_fid *fid,
1281                                   char *filename, int namelen,
1282                                   unsigned long valid, unsigned int ea_size,
1283                                   struct ptlrpc_request **request)
1284 {
1285         int rc;
1286         ENTRY;
1287         EXP_CHECK_MD_OP(exp, getattr_name);
1288         MD_COUNTER_INCREMENT(exp->exp_obd, getattr_name);
1289         rc = MDP(exp->exp_obd, getattr_name)(exp, fid, filename, namelen,
1290                                              valid, ea_size, request);
1291         RETURN(rc);
1292 }
1293
1294 static inline int md_intent_lock(struct obd_export *exp, struct ll_uctxt *uctxt,
1295                                  struct ll_fid *pfid, const char *name,
1296                                  int len, void *lmm, int lmmsize,
1297                                  struct ll_fid *cfid, struct lookup_intent *it,
1298                                  int flags, struct ptlrpc_request **reqp,
1299                                  ldlm_blocking_callback cb_blocking)
1300 {
1301         int rc;
1302         ENTRY;
1303         EXP_CHECK_MD_OP(exp, intent_lock);
1304         MD_COUNTER_INCREMENT(exp->exp_obd, intent_lock);
1305         rc = MDP(exp->exp_obd, intent_lock)(exp, uctxt, pfid, name, len,
1306                                             lmm, lmmsize, cfid, it, flags,
1307                                             reqp, cb_blocking);
1308         RETURN(rc);
1309 }
1310
1311 static inline int md_link(struct obd_export *exp, struct mdc_op_data *data,
1312                           struct ptlrpc_request **request)
1313 {
1314         int rc;
1315         ENTRY;
1316         EXP_CHECK_MD_OP(exp, link);
1317         MD_COUNTER_INCREMENT(exp->exp_obd, link);
1318         rc = MDP(exp->exp_obd, link)(exp, data, request);
1319         RETURN(rc);
1320 }
1321
1322 static inline int md_rename(struct obd_export *exp, struct mdc_op_data *data,
1323                             const char *old, int oldlen,
1324                             const char *new, int newlen,
1325                             struct ptlrpc_request **request)
1326 {
1327         int rc;
1328         ENTRY;
1329         EXP_CHECK_MD_OP(exp, rename);
1330         MD_COUNTER_INCREMENT(exp->exp_obd, rename);
1331         rc = MDP(exp->exp_obd, rename)(exp, data, old, oldlen, new,
1332                                        newlen, request);
1333         RETURN(rc);
1334 }
1335
1336 static inline int md_setattr(struct obd_export *exp, struct mdc_op_data *data,
1337                              struct iattr *iattr, void *ea, int ealen,
1338                              void *ea2, int ea2len,
1339                              struct ptlrpc_request **request)
1340 {
1341         int rc;
1342         ENTRY;
1343         EXP_CHECK_MD_OP(exp, setattr);
1344         MD_COUNTER_INCREMENT(exp->exp_obd, setattr);
1345         rc = MDP(exp->exp_obd, setattr)(exp, data, iattr, ea, ealen,
1346                                         ea2, ea2len, request);
1347         RETURN(rc);
1348 }
1349
1350 static inline int md_sync(struct obd_export *exp, struct ll_fid *fid,
1351                                struct ptlrpc_request **request)
1352 {
1353         int rc;
1354         ENTRY;
1355         EXP_CHECK_MD_OP(exp, sync);
1356         MD_COUNTER_INCREMENT(exp->exp_obd, sync);
1357         rc = MDP(exp->exp_obd, sync)(exp, fid, request);
1358         RETURN(rc);
1359 }
1360
1361 static inline int md_readpage(struct obd_export *exp, struct ll_fid *fid,
1362                               __u64 offset, struct page *page,
1363                               struct ptlrpc_request **request)
1364 {
1365         int rc;
1366         ENTRY;
1367         EXP_CHECK_MD_OP(exp, readpage);
1368         MD_COUNTER_INCREMENT(exp->exp_obd, readpage);
1369         rc = MDP(exp->exp_obd, readpage)(exp, fid, offset, page, request);
1370         RETURN(rc);
1371 }
1372
1373 static inline int md_unlink(struct obd_export *exp, struct mdc_op_data *data,
1374                             struct ptlrpc_request **request)
1375 {
1376         int rc;
1377         ENTRY;
1378         EXP_CHECK_MD_OP(exp, unlink);
1379         MD_COUNTER_INCREMENT(exp->exp_obd, unlink);
1380         rc = MDP(exp->exp_obd, unlink)(exp, data, request);
1381         RETURN(rc);
1382 }
1383
1384 static inline struct obd_device *md_get_real_obd(struct obd_export *exp,
1385                                                  char *name, int len)
1386 {
1387         ENTRY;
1388         if (MDP(exp->exp_obd, get_real_obd) == NULL)
1389                 return exp->exp_obd;
1390         MD_COUNTER_INCREMENT(exp->exp_obd, get_real_obd);
1391         return MDP(exp->exp_obd, get_real_obd)(exp, name, len);
1392 }
1393
1394 static inline int md_valid_attrs(struct obd_export *exp, struct ll_fid *fid)
1395 {
1396         ENTRY;
1397         EXP_CHECK_MD_OP(exp, valid_attrs);
1398         MD_COUNTER_INCREMENT(exp->exp_obd, valid_attrs);
1399         return MDP(exp->exp_obd, valid_attrs)(exp, fid);
1400 }
1401
1402 static inline int md_req2lustre_md(struct obd_export *exp,
1403                                    struct ptlrpc_request *req,
1404                                    unsigned int offset,
1405                                    struct obd_export *osc_exp,
1406                                    struct lustre_md *md)
1407 {
1408         ENTRY;
1409         EXP_CHECK_MD_OP(exp, req2lustre_md);
1410         MD_COUNTER_INCREMENT(exp->exp_obd, req2lustre_md);
1411         return MDP(exp->exp_obd, req2lustre_md)(exp, req, offset, osc_exp, md);
1412 }
1413
1414 static inline int md_set_open_replay_data(struct obd_export *exp,
1415                                           struct obd_client_handle *och,
1416                                           struct ptlrpc_request *open_req)
1417 {
1418         ENTRY;
1419         EXP_CHECK_MD_OP(exp, set_open_replay_data);
1420         MD_COUNTER_INCREMENT(exp->exp_obd, set_open_replay_data);
1421         return MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req);
1422 }
1423
1424 static inline int md_clear_open_replay_data(struct obd_export *exp,
1425                                             struct obd_client_handle *och)
1426 {
1427         ENTRY;
1428         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
1429         MD_COUNTER_INCREMENT(exp->exp_obd, clear_open_replay_data);
1430         return MDP(exp->exp_obd, clear_open_replay_data)(exp, och);
1431 }
1432
1433 static inline int md_store_inode_generation(struct obd_export *exp,
1434                                             struct ptlrpc_request *req,
1435                                             int reqoff, int repoff)
1436 {
1437         ENTRY;
1438         EXP_CHECK_MD_OP(exp, store_inode_generation);
1439         MD_COUNTER_INCREMENT(exp->exp_obd, store_inode_generation);
1440         return MDP(exp->exp_obd, store_inode_generation)(exp, req,
1441                    reqoff, repoff);
1442 }
1443
1444 static inline int md_set_lock_data(struct obd_export *exp, __u64 *l, void *data)
1445 {
1446         ENTRY;
1447         EXP_CHECK_MD_OP(exp, set_lock_data);
1448         MD_COUNTER_INCREMENT(exp->exp_obd, set_lock_data);
1449         return MDP(exp->exp_obd, set_lock_data)(exp, l, data);
1450 }
1451
1452 /* OBD Metadata Support */
1453
1454 extern int obd_init_caches(void);
1455 extern void obd_cleanup_caches(void);
1456
1457 /* support routines */
1458 extern kmem_cache_t *obdo_cachep;
1459 static inline struct obdo *obdo_alloc(void)
1460 {
1461         struct obdo *oa;
1462
1463         oa = kmem_cache_alloc(obdo_cachep, SLAB_KERNEL);
1464         if (oa == NULL)
1465                 LBUG();
1466         CDEBUG(D_MALLOC, "kmem_cache_alloced oa at %p\n", oa);
1467         memset(oa, 0, sizeof (*oa));
1468
1469         return oa;
1470 }
1471
1472 static inline void obdo_free(struct obdo *oa)
1473 {
1474         if (!oa)
1475                 return;
1476         CDEBUG(D_MALLOC, "kmem_cache_freed oa at %p\n", oa);
1477         kmem_cache_free(obdo_cachep, oa);
1478 }
1479
1480 #if !defined(__KERNEL__) || (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
1481 #define to_kdev_t(dev) dev
1482 #define kdev_t_to_nr(dev) dev
1483 #endif
1484
1485 /* I'm as embarrassed about this as you are.
1486  *
1487  * <shaver> // XXX do not look into _superhack with remaining eye
1488  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
1489 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
1490 extern void (*ptlrpc_abort_inflight_superhack)(struct obd_import *imp);
1491
1492 /* sysctl.c */
1493 extern void obd_sysctl_init (void);
1494 extern void obd_sysctl_clean (void);
1495
1496 /* uuid.c  */
1497 typedef __u8 class_uuid_t[16];
1498 //int class_uuid_parse(struct obd_uuid in, class_uuid_t out);
1499 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
1500
1501 /* lustre_peer.c    */
1502 int lustre_uuid_to_peer(char *uuid, __u32 *peer_nal, ptl_nid_t *peer_nid);
1503 int class_add_uuid(char *uuid, __u64 nid, __u32 nal);
1504 int class_del_uuid (char *uuid);
1505 void class_init_uuidlist(void);
1506 void class_exit_uuidlist(void);
1507
1508 /* mea.c */
1509 int mea_name2idx(struct mea *mea, char *name, int namelen);
1510 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
1511
1512 #endif /* __LINUX_OBD_CLASS_H */