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 extern spinlock_t obd_dev_lock;
  51
  52 /* OBD Operations Declarations */
  53 extern struct obd_device *class_conn2obd(struct lustre_handle *);
  54 extern struct obd_device *class_exp2obd(struct obd_export *);
  55
  56 /* genops.c */
  57 struct obd_export *class_conn2export(struct lustre_handle *);
  58 int class_register_type(struct obd_ops *ops, struct md_ops *md_ops,
  59                         struct lprocfs_vars *, char *nm);
  60 int class_unregister_type(char *nm);
  61
  62 struct obd_device *class_newdev(struct obd_type *type);
  63 void class_release_dev(struct obd_device *obd);
  64
  65 int class_name2dev(char *name);
  66 struct obd_device *class_name2obd(char *name);
  67 int class_uuid2dev(struct obd_uuid *uuid);
  68 struct obd_device *class_uuid2obd(struct obd_uuid *uuid);
  69 struct obd_device * class_find_client_obd(struct obd_uuid *tgt_uuid,
  70                                           char * typ_name,
  71                                           struct obd_uuid *grp_uuid);
  72 struct obd_device * class_devices_in_group(struct obd_uuid *grp_uuid,
  73                                            int *next);
  74
  75 int oig_init(struct obd_io_group **oig);
  76 void oig_add_one(struct obd_io_group *oig,
  77                   struct oig_callback_context *occ);
  78 void oig_complete_one(struct obd_io_group *oig,
  79                        struct oig_callback_context *occ, int rc);
  80 void oig_release(struct obd_io_group *oig);
  81 int oig_wait(struct obd_io_group *oig);
  82
  83 /* obd_config.c */
  84 int class_process_config(struct lustre_cfg *lcfg);
  85
  86 /* Passed as data param to class_config_parse_handler() */
  87 struct config_llog_instance {
  88         char * cfg_instance;
  89         struct obd_uuid cfg_uuid;
  90         ptl_nid_t cfg_local_nid;
  91 };
  92 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
  93                             struct config_llog_instance *cfg);
  94
  95 int class_config_process_llog(struct llog_ctxt *ctxt, char *name,
  96                               struct config_llog_instance *cfg);
  97 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
  98                            struct config_llog_instance *cfg);
  99
 100 struct lustre_profile {
 101         struct list_head lp_list;
 102         char * lp_profile;
 103         char * lp_osc;
 104         char * lp_mdc;
 105 };
 106
 107 struct lustre_profile *class_get_profile(char * prof);
 108 void class_del_profile(char *prof);
 109
 110 #define class_export_rpc_get(exp)                                       \
 111 ({                                                                      \
 112         atomic_inc(&(exp)->exp_rpc_count);                              \
 113         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",    \
 114                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 115         class_export_get(exp);                                          \
 116 })
 117
 118 #define class_export_rpc_put(exp)                                       \
 119 ({                                                                      \
 120         atomic_dec(&(exp)->exp_rpc_count);                              \
 121         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",    \
 122                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 123         class_export_put(exp);                                          \
 124 })
 125
 126 #define class_export_get(exp)                                                  \
 127 ({                                                                             \
 128         struct obd_export *exp_ = exp;                                         \
 129         atomic_inc(&exp_->exp_refcount);                                       \
 130         CDEBUG(D_INFO, "GETting export %p : new refcount %d\n", exp_,          \
 131                atomic_read(&exp_->exp_refcount));                              \
 132         exp_;                                                                  \
 133 })
 134
 135 #define class_export_put(exp)                                                  \
 136 do {                                                                           \
 137         LASSERT((exp) != NULL);                                                \
 138         CDEBUG(D_INFO, "PUTting export %p : new refcount %d\n", (exp),         \
 139                atomic_read(&(exp)->exp_refcount) - 1);                         \
 140         LASSERT(atomic_read(&(exp)->exp_refcount) > 0);                        \
 141         LASSERT(atomic_read(&(exp)->exp_refcount) < 0x5a5a5a);                 \
 142         __class_export_put(exp);                                               \
 143 } while (0)
 144 void __class_export_put(struct obd_export *);
 145 struct obd_export *class_new_export(struct obd_device *obddev);
 146 void class_unlink_export(struct obd_export *exp);
 147
 148 struct obd_import *class_import_get(struct obd_import *);
 149 void class_import_put(struct obd_import *);
 150 struct obd_import *class_new_import(void);
 151 void class_destroy_import(struct obd_import *exp);
 152
 153 struct obd_type *class_get_type(char *name);
 154 void class_put_type(struct obd_type *type);
 155 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 156                   struct obd_uuid *cluuid);
 157 int class_disconnect(struct obd_export *exp, int failover);
 158 void class_disconnect_exports(struct obd_device *obddev, int failover);
 159 void class_disconnect_stale_exports(struct obd_device *obddev, int failover);
 160 /* generic operations shared by various OBD types */
 161 int class_multi_setup(struct obd_device *obddev, uint32_t len, void *data);
 162 int class_multi_cleanup(struct obd_device *obddev);
 163
 164 /* obdo.c */
 165 #ifdef __KERNEL__
 166 void obdo_from_iattr(struct obdo *oa, struct iattr *attr, unsigned ia_valid);
 167 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, obd_flag valid);
 168 void obdo_from_inode(struct obdo *dst, struct inode *src, obd_flag valid);
 169 void obdo_refresh_inode(struct inode *dst, struct obdo *src, obd_flag valid);
 170 void obdo_to_inode(struct inode *dst, struct obdo *src, obd_flag valid);
 171 #endif
 172 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_flag valid);
 173 int obdo_cmp_md(struct obdo *dst, struct obdo *src, obd_flag compare);
 174 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
 175
 176 static inline int obd_check_conn(struct lustre_handle *conn)
 177 {
 178         struct obd_device *obd;
 179         if (!conn) {
 180                 CERROR("NULL conn\n");
 181                 RETURN(-ENOTCONN);
 182         }
 183
 184         obd = class_conn2obd(conn);
 185         if (!obd) {
 186                 CERROR("NULL obd\n");
 187                 RETURN(-ENODEV);
 188         }
 189
 190         if (!obd->obd_attached) {
 191                 CERROR("obd %d not attached\n", obd->obd_minor);
 192                 RETURN(-ENODEV);
 193         }
 194
 195         if (!obd->obd_set_up) {
 196                 CERROR("obd %d not setup\n", obd->obd_minor);
 197                 RETURN(-ENODEV);
 198         }
 199
 200         if (!obd->obd_type) {
 201                 CERROR("obd %d not typed\n", obd->obd_minor);
 202                 RETURN(-ENODEV);
 203         }
 204
 205         if (!obd->obd_type->typ_ops) {
 206                 CERROR("obd_check_conn: obd %d no operations\n",
 207                        obd->obd_minor);
 208                 RETURN(-EOPNOTSUPP);
 209         }
 210         return 0;
 211 }
 212
 213
 214 #define OBT(dev)        (dev)->obd_type
 215 #define OBP(dev, op)    (dev)->obd_type->typ_ops->o_ ## op
 216 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
 217 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 218
 219 /* Ensure obd_setup: used for disconnect which might be called while
 220    an obd is stopping. */
 221 #define OBD_CHECK_SETUP(conn, exp)                                      \
 222 do {                                                                    \
 223         if (!(conn)) {                                                  \
 224                 CERROR("NULL connection\n");                            \
 225                 RETURN(-EINVAL);                                        \
 226         }                                                               \
 227                                                                         \
 228         exp = class_conn2export(conn);                                  \
 229         if (!(exp)) {                                                   \
 230                 CERROR("No export for conn "LPX64"\n", (conn)->cookie); \
 231                 RETURN(-EINVAL);                                        \
 232         }                                                               \
 233                                                                         \
 234         if (!(exp)->exp_obd->obd_set_up) {                              \
 235                 CERROR("Device %d not setup\n",                         \
 236                        (exp)->exp_obd->obd_minor);                      \
 237                 class_export_put(exp);                                  \
 238                 RETURN(-EINVAL);                                        \
 239         }                                                               \
 240 } while (0)
 241
 242 /* Ensure obd_setup and !obd_stopping. */
 243 #define OBD_CHECK_ACTIVE(conn, exp)                                     \
 244 do {                                                                    \
 245         if (!(conn)) {                                                  \
 246                 CERROR("NULL connection\n");                            \
 247                 RETURN(-EINVAL);                                        \
 248         }                                                               \
 249                                                                         \
 250         exp = class_conn2export(conn);                                  \
 251         if (!(exp)) {                                                   \
 252                 CERROR("No export for conn "LPX64"\n", (conn)->cookie); \
 253                 RETURN(-EINVAL);                                        \
 254         }                                                               \
 255                                                                         \
 256         if (!(exp)->exp_obd->obd_set_up || (exp)->exp_obd->obd_stopping) { \
 257                 CERROR("Device %d not setup\n",                         \
 258                        (exp)->exp_obd->obd_minor);                      \
 259                 class_export_put(exp);                                  \
 260                 RETURN(-EINVAL);                                        \
 261         }                                                               \
 262 } while (0)
 263
 264 /* Ensure obd_setup: used for cleanup which must be called
 265    while obd is stopping */
 266 #define OBD_CHECK_DEV_STOPPING(obd)                             \
 267 do {                                                            \
 268         if (!(obd)) {                                           \
 269                 CERROR("NULL device\n");                        \
 270                 RETURN(-ENODEV);                                \
 271         }                                                       \
 272                                                                 \
 273         if (!(obd)->obd_set_up) {                               \
 274                 CERROR("Device %d not setup\n",                 \
 275                        (obd)->obd_minor);                       \
 276                 RETURN(-ENODEV);                                \
 277         }                                                       \
 278                                                                 \
 279         if (!(obd)->obd_stopping) {                             \
 280                 CERROR("Device %d not stopping\n",              \
 281                        (obd)->obd_minor);                       \
 282                 RETURN(-ENODEV);                                \
 283         }                                                       \
 284 } while (0)
 285
 286 /* ensure obd_setup and !obd_stopping */
 287 #define OBD_CHECK_DEV_ACTIVE(obd)                               \
 288 do {                                                            \
 289         if (!(obd)) {                                           \
 290                 CERROR("NULL device\n");                        \
 291                 RETURN(-ENODEV);                                \
 292         }                                                       \
 293                                                                 \
 294         if (!(obd)->obd_set_up || (obd)->obd_stopping) {        \
 295                 CERROR("Device %d not setup\n",                 \
 296                        (obd)->obd_minor);                       \
 297                 RETURN(-ENODEV);                                \
 298         }                                                       \
 299 } while (0)
 300
 301
 302 #ifdef LPROCFS
 303 #define OBD_COUNTER_OFFSET(op)                                  \
 304         ((offsetof(struct obd_ops, o_ ## op) -                  \
 305           offsetof(struct obd_ops, o_iocontrol))                \
 306          / sizeof(((struct obd_ops *)(0))->o_iocontrol))
 307
 308 #define OBD_COUNTER_INCREMENT(obd, op)                          \
 309         if ((obd)->obd_stats != NULL) {                         \
 310                 unsigned int coffset;                           \
 311                 coffset = (unsigned int)(obd)->obd_cntr_base +  \
 312                         OBD_COUNTER_OFFSET(op);                 \
 313                 LASSERT(coffset < obd->obd_stats->ls_num);      \
 314                 lprocfs_counter_incr(obd->obd_stats, coffset);  \
 315         }
 316 /* FIXME: real accounting here */
 317 #define MD_COUNTER_INCREMENT(obd, op)
 318 #else
 319 #define OBD_COUNTER_OFFSET(op)
 320 #define OBD_COUNTER_INCREMENT(obd, op)
 321 #define MD_COUNTER_INCREMENT(obd, op)
 322 #endif
 323
 324 #define OBD_CHECK_MD_OP(obd, op, err)                           \
 325 do {                                                            \
 326         if (!OBT(obd) || !MDP((obd), op)) {\
 327                 if (err)                                        \
 328                         CERROR("obd_md" #op ": dev %d no operation\n",    \
 329                                obd->obd_minor);                 \
 330                 RETURN(err);                                    \
 331         }                                                       \
 332 } while (0)
 333
 334 #define EXP_CHECK_MD_OP(exp, op)                                \
 335 do {                                                            \
 336         if ((exp) == NULL) {                                    \
 337                 CERROR("obd_" #op ": NULL export\n");           \
 338                 portals_debug_dumplog();                        \
 339                 RETURN(-ENODEV);                                \
 340         }                                                       \
 341         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 342                 CERROR("obd_" #op ": cleaned up obd\n");        \
 343                 RETURN(-EOPNOTSUPP);                            \
 344         }                                                       \
 345         if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
 346                 CERROR("obd_" #op ": dev %d no operation\n",    \
 347                        (exp)->exp_obd->obd_minor);              \
 348                 RETURN(-EOPNOTSUPP);                            \
 349         }                                                       \
 350 } while (0)
 351
 352 #define OBD_CHECK_OP(obd, op, err)                              \
 353 do {                                                            \
 354         if (!OBT(obd) || !OBP((obd), op)) {\
 355                 if (err)                                        \
 356                         CERROR("obd_" #op ": dev %d no operation\n",    \
 357                                obd->obd_minor);                         \
 358                 RETURN(err);                                    \
 359         }                                                       \
 360 } while (0)
 361
 362 #define EXP_CHECK_OP(exp, op)                                   \
 363 do {                                                            \
 364         if ((exp) == NULL) {                                    \
 365                 CERROR("obd_" #op ": NULL export\n");           \
 366                 portals_debug_dumplog();                        \
 367                 RETURN(-ENODEV);                                \
 368         }                                                       \
 369         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 370                 CERROR("obd_" #op ": cleaned up obd\n");        \
 371                 RETURN(-EOPNOTSUPP);                            \
 372         }                                                       \
 373         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 374                 CERROR("obd_" #op ": dev %d no operation\n",    \
 375                        (exp)->exp_obd->obd_minor);              \
 376                 RETURN(-EOPNOTSUPP);                            \
 377         }                                                       \
 378 } while (0)
 379
 380 #define CTXT_CHECK_OP(ctxt, op, err)                                         \
 381 do {                                                            \
 382         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {                     \
 383                 if (err)                                        \
 384                         CERROR("lop_" #op ": dev %d no operation\n",    \
 385                                ctxt->loc_obd->obd_minor);                         \
 386                 RETURN(err);                                    \
 387         }                                                       \
 388 } while (0)
 389
 390 static inline int obd_get_info(struct obd_export *exp, __u32 keylen,
 391                                void *key, __u32 *vallen, void *val)
 392 {
 393         int rc;
 394         ENTRY;
 395
 396         EXP_CHECK_OP(exp, get_info);
 397         OBD_COUNTER_INCREMENT(exp->exp_obd, get_info);
 398
 399         rc = OBP(exp->exp_obd, get_info)(exp, keylen, key, vallen, val);
 400         RETURN(rc);
 401 }
 402
 403 static inline int obd_set_info(struct obd_export *exp, obd_count keylen,
 404                                void *key, obd_count vallen, void *val)
 405 {
 406         int rc;
 407         ENTRY;
 408
 409         EXP_CHECK_OP(exp, set_info);
 410         OBD_COUNTER_INCREMENT(exp->exp_obd, set_info);
 411
 412         rc = OBP(exp->exp_obd, set_info)(exp, keylen, key, vallen, val);
 413         RETURN(rc);
 414 }
 415
 416 static inline int obd_setup(struct obd_device *obd, int datalen, void *data)
 417 {
 418         int rc;
 419         ENTRY;
 420
 421         OBD_CHECK_OP(obd, setup, -EOPNOTSUPP);
 422         OBD_COUNTER_INCREMENT(obd, setup);
 423
 424         rc = OBP(obd, setup)(obd, datalen, data);
 425         RETURN(rc);
 426 }
 427
 428 static inline int obd_precleanup(struct obd_device *obd, int flags)
 429 {
 430         int rc;
 431         ENTRY;
 432
 433         OBD_CHECK_OP(obd, precleanup, 0);
 434         OBD_COUNTER_INCREMENT(obd, precleanup);
 435
 436         rc = OBP(obd, precleanup)(obd, flags);
 437         RETURN(rc);
 438 }
 439
 440 static inline int obd_cleanup(struct obd_device *obd, int flags)
 441 {
 442         int rc;
 443         ENTRY;
 444
 445         OBD_CHECK_DEV_STOPPING(obd);
 446         OBD_CHECK_OP(obd, cleanup, 0);
 447         OBD_COUNTER_INCREMENT(obd, cleanup);
 448
 449         rc = OBP(obd, cleanup)(obd, flags);
 450         RETURN(rc);
 451 }
 452
 453 static inline int
 454 obd_process_config(struct obd_device *obd, int datalen, void *data)
 455 {
 456         int rc;
 457         ENTRY;
 458
 459         OBD_CHECK_OP(obd, process_config, -EOPNOTSUPP);
 460         OBD_COUNTER_INCREMENT(obd, process_config);
 461
 462         rc = OBP(obd, process_config)(obd, datalen, data);
 463         RETURN(rc);
 464 }
 465
 466 /* Pack an in-memory MD struct for storage on disk.
 467  * Returns +ve size of packed MD (0 for free), or -ve error.
 468  *
 469  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 470  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 471  * If @*disk_tgt == NULL, it will be allocated
 472  */
 473 static inline int obd_packmd(struct obd_export *exp,
 474                              struct lov_mds_md **disk_tgt,
 475                              struct lov_stripe_md *mem_src)
 476 {
 477         int rc;
 478         ENTRY;
 479
 480         EXP_CHECK_OP(exp, packmd);
 481         OBD_COUNTER_INCREMENT(exp->exp_obd, packmd);
 482
 483         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 484         RETURN(rc);
 485 }
 486
 487 static inline int obd_size_diskmd(struct obd_export *exp,
 488                                   struct lov_stripe_md *mem_src)
 489 {
 490         return obd_packmd(exp, NULL, mem_src);
 491 }
 492
 493 /* helper functions */
 494 static inline int obd_alloc_diskmd(struct obd_export *exp,
 495                                    struct lov_mds_md **disk_tgt)
 496 {
 497         LASSERT(disk_tgt);
 498         LASSERT(*disk_tgt == NULL);
 499         return obd_packmd(exp, disk_tgt, NULL);
 500 }
 501
 502 static inline int obd_free_diskmd(struct obd_export *exp,
 503                                   struct lov_mds_md **disk_tgt)
 504 {
 505         LASSERT(disk_tgt);
 506         LASSERT(*disk_tgt);
 507         return obd_packmd(exp, disk_tgt, NULL);
 508 }
 509
 510 /* Unpack an MD struct from disk to in-memory format.
 511  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 512  *
 513  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 514  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 515  * If @*mem_tgt == NULL, it will be allocated
 516  */
 517 static inline int obd_unpackmd(struct obd_export *exp,
 518                                struct lov_stripe_md **mem_tgt,
 519                                struct lov_mds_md *disk_src,
 520                                int disk_len)
 521 {
 522         int rc;
 523         ENTRY;
 524
 525         EXP_CHECK_OP(exp, unpackmd);
 526         OBD_COUNTER_INCREMENT(exp->exp_obd, unpackmd);
 527
 528         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 529         RETURN(rc);
 530 }
 531
 532 /* helper functions */
 533 static inline int obd_alloc_memmd(struct obd_export *exp,
 534                                   struct lov_stripe_md **mem_tgt)
 535 {
 536         LASSERT(mem_tgt);
 537         LASSERT(*mem_tgt == NULL);
 538         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 539 }
 540
 541 static inline int obd_free_memmd(struct obd_export *exp,
 542                                  struct lov_stripe_md **mem_tgt)
 543 {
 544         LASSERT(mem_tgt);
 545         LASSERT(*mem_tgt);
 546         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 547 }
 548
 549 static inline int obd_revalidate_md(struct obd_export *exp, struct obdo *obdo,
 550                                     struct lov_stripe_md *ea,
 551                                     struct obd_trans_info *oti)
 552 {
 553         int rc;
 554         ENTRY;
 555
 556         EXP_CHECK_OP(exp, revalidate_md);
 557         OBD_COUNTER_INCREMENT(exp->exp_obd, revalidate_md);
 558
 559         rc = OBP(exp->exp_obd, revalidate_md)(exp, obdo, ea, oti);
 560         RETURN(rc);
 561 }
 562
 563 static inline int obd_create(struct obd_export *exp, struct obdo *obdo,
 564                              struct lov_stripe_md **ea,
 565                              struct obd_trans_info *oti)
 566 {
 567         int rc;
 568         ENTRY;
 569
 570         EXP_CHECK_OP(exp, create);
 571         OBD_COUNTER_INCREMENT(exp->exp_obd, create);
 572
 573         rc = OBP(exp->exp_obd, create)(exp, obdo, ea, oti);
 574         RETURN(rc);
 575 }
 576
 577 static inline int obd_destroy(struct obd_export *exp, struct obdo *obdo,
 578                               struct lov_stripe_md *ea,
 579                               struct obd_trans_info *oti)
 580 {
 581         int rc;
 582         ENTRY;
 583
 584         EXP_CHECK_OP(exp, destroy);
 585         OBD_COUNTER_INCREMENT(exp->exp_obd, destroy);
 586
 587         rc = OBP(exp->exp_obd, destroy)(exp, obdo, ea, oti);
 588         RETURN(rc);
 589 }
 590
 591 static inline int obd_getattr(struct obd_export *exp, struct obdo *obdo,
 592                               struct lov_stripe_md *ea)
 593 {
 594         int rc;
 595         ENTRY;
 596
 597         EXP_CHECK_OP(exp, getattr);
 598         OBD_COUNTER_INCREMENT(exp->exp_obd, getattr);
 599
 600         rc = OBP(exp->exp_obd, getattr)(exp, obdo, ea);
 601         RETURN(rc);
 602 }
 603
 604 static inline int obd_getattr_async(struct obd_export *exp,
 605                                     struct obdo *obdo, struct lov_stripe_md *ea,
 606                                     struct ptlrpc_request_set *set)
 607 {
 608         int rc;
 609         ENTRY;
 610
 611         EXP_CHECK_OP(exp, getattr);
 612         OBD_COUNTER_INCREMENT(exp->exp_obd, getattr);
 613
 614         rc = OBP(exp->exp_obd, getattr_async)(exp, obdo, ea, set);
 615         RETURN(rc);
 616 }
 617
 618 static inline int obd_setattr(struct obd_export *exp, struct obdo *obdo,
 619                               struct lov_stripe_md *ea,
 620                               struct obd_trans_info *oti)
 621 {
 622         int rc;
 623         ENTRY;
 624
 625         EXP_CHECK_OP(exp, setattr);
 626         OBD_COUNTER_INCREMENT(exp->exp_obd, setattr);
 627
 628         rc = OBP(exp->exp_obd, setattr)(exp, obdo, ea, oti);
 629         RETURN(rc);
 630 }
 631 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 632                                int priority)
 633 {
 634         struct obd_device *obd = imp->imp_obd;
 635         int rc;
 636         ENTRY;
 637
 638         OBD_CHECK_DEV_ACTIVE(obd);
 639         OBD_CHECK_OP(obd, add_conn, -EOPNOTSUPP);
 640         OBD_COUNTER_INCREMENT(obd, add_conn);
 641
 642         rc = OBP(obd, add_conn)(imp, uuid, priority);
 643         RETURN(rc);
 644 }
 645
 646 static inline int obd_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
 647 {
 648         struct obd_device *obd = imp->imp_obd;
 649         int rc;
 650         ENTRY;
 651
 652         OBD_CHECK_DEV_ACTIVE(obd);
 653         OBD_CHECK_OP(obd, del_conn, -EOPNOTSUPP);
 654         OBD_COUNTER_INCREMENT(obd, del_conn);
 655
 656         rc = OBP(obd, del_conn)(imp, uuid);
 657         RETURN(rc);
 658 }
 659
 660
 661 static inline int obd_connect(struct lustre_handle *conn,
 662                               struct obd_device *obd, struct obd_uuid *cluuid,
 663                               unsigned long connect_flags)
 664 {
 665         int rc;
 666         ENTRY;
 667
 668         OBD_CHECK_DEV_ACTIVE(obd);
 669         OBD_CHECK_OP(obd, connect, -EOPNOTSUPP);
 670         OBD_COUNTER_INCREMENT(obd, connect);
 671
 672         rc = OBP(obd, connect)(conn, obd, cluuid, connect_flags);
 673         RETURN(rc);
 674 }
 675
 676 static inline int obd_connect_post(struct obd_export *exp, unsigned long flags)
 677 {
 678         int rc;
 679         ENTRY;
 680
 681         OBD_CHECK_DEV_ACTIVE(exp->exp_obd);
 682         if (!OBT(exp->exp_obd) || !OBP((exp->exp_obd), connect_post))
 683                 RETURN(0);
 684         OBD_COUNTER_INCREMENT(exp->exp_obd, connect_post);
 685         rc = OBP(exp->exp_obd, connect_post)(exp, flags);
 686         RETURN(rc);
 687 }
 688
 689 static inline int obd_disconnect(struct obd_export *exp, int flags)
 690 {
 691         int rc;
 692         ENTRY;
 693
 694         EXP_CHECK_OP(exp, disconnect);
 695         OBD_COUNTER_INCREMENT(exp->exp_obd, disconnect);
 696
 697         rc = OBP(exp->exp_obd, disconnect)(exp, flags);
 698         RETURN(rc);
 699 }
 700
 701 static inline int obd_init_export(struct obd_export *exp)
 702 {
 703         int rc = 0;
 704
 705         ENTRY;
 706         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 707             OBP((exp)->exp_obd, init_export))
 708                 rc = OBP(exp->exp_obd, init_export)(exp);
 709         RETURN(rc);
 710 }
 711
 712 static inline int obd_destroy_export(struct obd_export *exp)
 713 {
 714         ENTRY;
 715         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 716             OBP((exp)->exp_obd, destroy_export))
 717                 OBP(exp->exp_obd, destroy_export)(exp);
 718         RETURN(0);
 719 }
 720
 721 static inline struct dentry *
 722 obd_lvfs_fid2dentry(struct obd_export *exp, __u64 id_ino, __u32 gen, __u64 gr)
 723 {
 724         LASSERT(exp->exp_obd);
 725
 726         return lvfs_fid2dentry(&exp->exp_obd->obd_lvfs_ctxt, id_ino, gen, gr,
 727                                exp->exp_obd);
 728 }
 729
 730 #ifndef time_before
 731 #define time_before(t1, t2) ((long)t2 - (long)t1 > 0)
 732 #endif
 733
 734 /* @max_age is the oldest time in jiffies that we accept using a cached data.
 735  * If the cache is older than @max_age we will get a new value from the
 736  * target.  Use a value of "jiffies + HZ" to guarantee freshness. */
 737 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
 738                              unsigned long max_age)
 739 {
 740         int rc = 0;
 741         ENTRY;
 742
 743         if (obd == NULL)
 744                 RETURN(-EINVAL);
 745
 746         OBD_CHECK_OP(obd, statfs, -EOPNOTSUPP);
 747         OBD_COUNTER_INCREMENT(obd, statfs);
 748
 749         CDEBUG(D_SUPER, "osfs %lu, max_age %lu\n", obd->obd_osfs_age, max_age);
 750         if (time_before(obd->obd_osfs_age, max_age)) {
 751                 rc = OBP(obd, statfs)(obd, osfs, max_age);
 752                 if (rc == 0) {
 753                         spin_lock(&obd->obd_osfs_lock);
 754                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
 755                         obd->obd_osfs_age = jiffies;
 756                         spin_unlock(&obd->obd_osfs_lock);
 757                 }
 758         } else {
 759                 CDEBUG(D_SUPER, "using cached obd_statfs data\n");
 760                 spin_lock(&obd->obd_osfs_lock);
 761                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
 762                 spin_unlock(&obd->obd_osfs_lock);
 763         }
 764         RETURN(rc);
 765 }
 766
 767 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
 768                            struct lov_stripe_md *ea, obd_size start,
 769                            obd_size end)
 770 {
 771         int rc;
 772         ENTRY;
 773
 774         OBD_CHECK_OP(exp->exp_obd, sync, -EOPNOTSUPP);
 775         OBD_COUNTER_INCREMENT(exp->exp_obd, sync);
 776
 777         rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end);
 778         RETURN(rc);
 779 }
 780
 781 static inline int obd_punch(struct obd_export *exp, struct obdo *oa,
 782                             struct lov_stripe_md *ea, obd_size start,
 783                             obd_size end, struct obd_trans_info *oti)
 784 {
 785         int rc;
 786         ENTRY;
 787
 788         EXP_CHECK_OP(exp, punch);
 789         OBD_COUNTER_INCREMENT(exp->exp_obd, punch);
 790
 791         rc = OBP(exp->exp_obd, punch)(exp, oa, ea, start, end, oti);
 792         RETURN(rc);
 793 }
 794
 795 static inline int obd_brw(int cmd, struct obd_export *exp, struct obdo *oa,
 796                           struct lov_stripe_md *ea, obd_count oa_bufs,
 797                           struct brw_page *pg, struct obd_trans_info *oti)
 798 {
 799         int rc;
 800         ENTRY;
 801
 802         EXP_CHECK_OP(exp, brw);
 803         OBD_COUNTER_INCREMENT(exp->exp_obd, brw);
 804
 805         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
 806                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
 807                        "or OBD_BRW_CHECK\n");
 808                 LBUG();
 809         }
 810
 811         rc = OBP(exp->exp_obd, brw)(cmd, exp, oa, ea, oa_bufs, pg, oti);
 812         RETURN(rc);
 813 }
 814
 815 static inline int obd_brw_async(int cmd, struct obd_export *exp,
 816                                 struct obdo *oa, struct lov_stripe_md *ea,
 817                                 obd_count oa_bufs, struct brw_page *pg,
 818                                 struct ptlrpc_request_set *set,
 819                                 struct obd_trans_info *oti)
 820 {
 821         int rc;
 822         ENTRY;
 823
 824         EXP_CHECK_OP(exp, brw_async);
 825         OBD_COUNTER_INCREMENT(exp->exp_obd, brw_async);
 826
 827         if (!(cmd & OBD_BRW_RWMASK)) {
 828                 CERROR("obd_brw: cmd must be OBD_BRW_READ or OBD_BRW_WRITE\n");
 829                 LBUG();
 830         }
 831
 832         rc = OBP(exp->exp_obd, brw_async)(cmd, exp, oa, ea, oa_bufs, pg, set,
 833                                           oti);
 834         RETURN(rc);
 835 }
 836
 837 static inline  int obd_prep_async_page(struct obd_export *exp,
 838                                        struct lov_stripe_md *lsm,
 839                                        struct lov_oinfo *loi,
 840                                        struct page *page, obd_off offset,
 841                                        struct obd_async_page_ops *ops,
 842                                        void *data, void **res)
 843 {
 844         int ret;
 845         ENTRY;
 846
 847         OBD_CHECK_OP(exp->exp_obd, prep_async_page, -EOPNOTSUPP);
 848         OBD_COUNTER_INCREMENT(exp->exp_obd, prep_async_page);
 849
 850         ret = OBP(exp->exp_obd, prep_async_page)(exp, lsm, loi, page, offset,
 851                                                  ops, data, res);
 852         RETURN(ret);
 853 }
 854
 855 static inline int obd_queue_async_io(struct obd_export *exp,
 856                                      struct lov_stripe_md *lsm,
 857                                      struct lov_oinfo *loi, void *cookie,
 858                                      int cmd, obd_off off, int count,
 859                                      obd_flag brw_flags, obd_flag async_flags)
 860 {
 861         int rc;
 862         ENTRY;
 863
 864         OBD_CHECK_OP(exp->exp_obd, queue_async_io, -EOPNOTSUPP);
 865         OBD_COUNTER_INCREMENT(exp->exp_obd, queue_async_io);
 866         LASSERT(cmd & OBD_BRW_RWMASK);
 867
 868         rc = OBP(exp->exp_obd, queue_async_io)(exp, lsm, loi, cookie, cmd, off,
 869                                                count, brw_flags, async_flags);
 870         RETURN(rc);
 871 }
 872
 873 static inline int obd_set_async_flags(struct obd_export *exp,
 874                                       struct lov_stripe_md *lsm,
 875                                       struct lov_oinfo *loi, void *cookie,
 876                                       obd_flag async_flags)
 877 {
 878         int rc;
 879         ENTRY;
 880
 881         OBD_CHECK_OP(exp->exp_obd, set_async_flags, -EOPNOTSUPP);
 882         OBD_COUNTER_INCREMENT(exp->exp_obd, set_async_flags);
 883
 884         rc = OBP(exp->exp_obd, set_async_flags)(exp, lsm, loi, cookie,
 885                                                 async_flags);
 886         RETURN(rc);
 887 }
 888
 889 static inline int obd_queue_group_io(struct obd_export *exp,
 890                                      struct lov_stripe_md *lsm,
 891                                      struct lov_oinfo *loi,
 892                                      struct obd_io_group *oig,
 893                                      void *cookie, int cmd, obd_off off,
 894                                      int count, obd_flag brw_flags,
 895                                      obd_flag async_flags)
 896 {
 897         int rc;
 898         ENTRY;
 899
 900         OBD_CHECK_OP(exp->exp_obd, queue_group_io, -EOPNOTSUPP);
 901         OBD_COUNTER_INCREMENT(exp->exp_obd, queue_group_io);
 902         LASSERT(cmd & OBD_BRW_RWMASK);
 903
 904         rc = OBP(exp->exp_obd, queue_group_io)(exp, lsm, loi, oig, cookie,
 905                                                cmd, off, count, brw_flags,
 906                                                async_flags);
 907         RETURN(rc);
 908 }
 909
 910 static inline int obd_trigger_group_io(struct obd_export *exp,
 911                                        struct lov_stripe_md *lsm,
 912                                        struct lov_oinfo *loi,
 913                                        struct obd_io_group *oig)
 914 {
 915         int rc;
 916         ENTRY;
 917
 918         OBD_CHECK_OP(exp->exp_obd, trigger_group_io, -EOPNOTSUPP);
 919         OBD_COUNTER_INCREMENT(exp->exp_obd, trigger_group_io);
 920
 921         rc = OBP(exp->exp_obd, trigger_group_io)(exp, lsm, loi, oig);
 922         RETURN(rc);
 923 }
 924
 925 static inline int obd_teardown_async_page(struct obd_export *exp,
 926                                           struct lov_stripe_md *lsm,
 927                                           struct lov_oinfo *loi, void *cookie)
 928 {
 929         int rc;
 930         ENTRY;
 931
 932         OBD_CHECK_OP(exp->exp_obd, teardown_async_page, -EOPNOTSUPP);
 933         OBD_COUNTER_INCREMENT(exp->exp_obd, teardown_async_page);
 934
 935         rc = OBP(exp->exp_obd, teardown_async_page)(exp, lsm, loi, cookie);
 936         RETURN(rc);
 937 }
 938
 939 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
 940                              int objcount, struct obd_ioobj *obj,
 941                              int niocount, struct niobuf_remote *remote,
 942                              struct niobuf_local *local,
 943                              struct obd_trans_info *oti)
 944 {
 945         int rc;
 946         ENTRY;
 947
 948         OBD_CHECK_OP(exp->exp_obd, preprw, -EOPNOTSUPP);
 949         OBD_COUNTER_INCREMENT(exp->exp_obd, preprw);
 950
 951         rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, niocount,
 952                                        remote, local, oti);
 953         RETURN(rc);
 954 }
 955
 956 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
 957                                int objcount, struct obd_ioobj *obj,
 958                                int niocount, struct niobuf_local *local,
 959                                struct obd_trans_info *oti, int rc)
 960 {
 961         ENTRY;
 962
 963         OBD_CHECK_OP(exp->exp_obd, commitrw, -EOPNOTSUPP);
 964         OBD_COUNTER_INCREMENT(exp->exp_obd, commitrw);
 965
 966         rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj, niocount,
 967                                          local, oti, rc);
 968         RETURN(rc);
 969 }
 970
 971 static inline int obd_do_cow(struct obd_export *exp, struct obd_ioobj *obj,
 972                             int objcount,struct niobuf_remote *rnb)
 973 {
 974         int rc;
 975         ENTRY;
 976
 977         /* there are cases when write_extents is not implemented. */
 978         if (!OBP(exp->exp_obd, do_cow))
 979                 RETURN(0);
 980
 981         OBD_COUNTER_INCREMENT(exp->exp_obd, do_cow);
 982
 983         rc = OBP(exp->exp_obd, do_cow)(exp, obj, objcount, rnb);
 984
 985         RETURN(rc);
 986 }
 987
 988 static inline int obd_write_extents(struct obd_export *exp,
 989                                     struct obd_ioobj *obj,
 990                                     int objcount, int niocount,
 991                                     struct niobuf_local *local,
 992                                     int rc)
 993 {
 994         ENTRY;
 995
 996         /* there are cases when write_extents is not implemented. */
 997         if (!OBP(exp->exp_obd, write_extents))
 998                 RETURN(0);
 999
1000         OBD_COUNTER_INCREMENT(exp->exp_obd, write_extents);
1001
1002         rc = OBP(exp->exp_obd, write_extents)(exp, obj, objcount, niocount,
1003                                               local, rc);
1004         RETURN(rc);
1005 }
1006
1007 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1008                                 int len, void *karg, void *uarg)
1009 {
1010         int rc;
1011         ENTRY;
1012
1013         EXP_CHECK_OP(exp, iocontrol);
1014         OBD_COUNTER_INCREMENT(exp->exp_obd, iocontrol);
1015
1016         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1017         RETURN(rc);
1018 }
1019
1020 static inline int obd_enqueue(struct obd_export *exp, struct lov_stripe_md *ea,
1021                               __u32 type, ldlm_policy_data_t *policy,
1022                               __u32 mode, int *flags, void *bl_cb, void *cp_cb,
1023                               void *gl_cb, void *data, __u32 lvb_len,
1024                               void *lvb_swabber, struct lustre_handle *lockh)
1025 {
1026         int rc;
1027         ENTRY;
1028
1029         EXP_CHECK_OP(exp, enqueue);
1030         OBD_COUNTER_INCREMENT(exp->exp_obd, enqueue);
1031
1032         rc = OBP(exp->exp_obd, enqueue)(exp, ea, type, policy, mode, flags,
1033                                         bl_cb, cp_cb, gl_cb, data, lvb_len,
1034                                         lvb_swabber, lockh);
1035         RETURN(rc);
1036 }
1037
1038 static inline int obd_match(struct obd_export *exp, struct lov_stripe_md *ea,
1039                             __u32 type, ldlm_policy_data_t *policy, __u32 mode,
1040                             int *flags, void *data, struct lustre_handle *lockh)
1041 {
1042         int rc;
1043         ENTRY;
1044
1045         EXP_CHECK_OP(exp, match);
1046         OBD_COUNTER_INCREMENT(exp->exp_obd, match);
1047
1048         rc = OBP(exp->exp_obd, match)(exp, ea, type, policy, mode, flags, data,
1049                                       lockh);
1050         RETURN(rc);
1051 }
1052
1053 static inline int obd_change_cbdata(struct obd_export *exp,
1054                                     struct lov_stripe_md *lsm,
1055                                     ldlm_iterator_t it, void *data)
1056 {
1057         int rc;
1058         ENTRY;
1059
1060         EXP_CHECK_OP(exp, change_cbdata);
1061         OBD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata);
1062
1063         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1064         RETURN(rc);
1065 }
1066
1067 static inline int obd_cancel(struct obd_export *exp,
1068                              struct lov_stripe_md *ea, __u32 mode,
1069                              struct lustre_handle *lockh)
1070 {
1071         int rc;
1072         ENTRY;
1073
1074         EXP_CHECK_OP(exp, cancel);
1075         OBD_COUNTER_INCREMENT(exp->exp_obd, cancel);
1076
1077         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1078         RETURN(rc);
1079 }
1080
1081 static inline int obd_cancel_unused(struct obd_export *exp,
1082                                     struct lov_stripe_md *ea, int flags,
1083                                     void *opaque)
1084 {
1085         int rc;
1086         ENTRY;
1087
1088         EXP_CHECK_OP(exp, cancel_unused);
1089         OBD_COUNTER_INCREMENT(exp->exp_obd, cancel_unused);
1090
1091         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1092         RETURN(rc);
1093 }
1094
1095
1096 static inline int obd_san_preprw(int cmd, struct obd_export *exp,
1097                                  struct obdo *oa,
1098                                  int objcount, struct obd_ioobj *obj,
1099                                  int niocount, struct niobuf_remote *remote)
1100 {
1101         int rc;
1102
1103         EXP_CHECK_OP(exp, preprw);
1104         OBD_COUNTER_INCREMENT(exp->exp_obd, preprw);
1105
1106         rc = OBP(exp->exp_obd, san_preprw)(cmd, exp, oa, objcount, obj,
1107                                            niocount, remote);
1108         class_export_put(exp);
1109         return(rc);
1110 }
1111
1112 static inline int obd_pin(struct obd_export *exp, obd_id ino, __u32 gen,
1113                           int type, struct obd_client_handle *handle, int flag)
1114 {
1115         int rc;
1116
1117         EXP_CHECK_OP(exp, pin);
1118         OBD_COUNTER_INCREMENT(exp->exp_obd, pin);
1119
1120         rc = OBP(exp->exp_obd, pin)(exp, ino, gen, type, handle, flag);
1121         return(rc);
1122 }
1123
1124 static inline int obd_unpin(struct obd_export *exp,
1125                             struct obd_client_handle *handle, int flag)
1126 {
1127         int rc;
1128
1129         EXP_CHECK_OP(exp, unpin);
1130         OBD_COUNTER_INCREMENT(exp->exp_obd, unpin);
1131
1132         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1133         return(rc);
1134 }
1135
1136
1137 static inline void obd_import_event(struct obd_device *obd,
1138                                     struct obd_import *imp,
1139                                     enum obd_import_event event)
1140 {
1141         if (obd->obd_set_up && OBP(obd, import_event)) {
1142                 OBD_COUNTER_INCREMENT(obd, import_event);
1143                 OBP(obd, import_event)(obd, imp, event);
1144         }
1145 }
1146
1147 static inline int obd_llog_connect(struct obd_export *exp,
1148                                         struct llogd_conn_body *body)
1149 {
1150         ENTRY;
1151         EXP_CHECK_OP(exp, llog_connect);
1152         return OBP(exp->exp_obd, llog_connect)(exp, body);
1153 }
1154
1155 static inline int obd_notify(struct obd_device *obd, struct obd_device *watched,
1156                              int active, void *data)
1157 {
1158         if (!obd->obd_set_up) {
1159                 CERROR("obd %s not set up\n", obd->obd_name);
1160                 return -EINVAL;
1161         }
1162
1163         if (!OBP(obd, notify)) {
1164                 CERROR("obd %s has no notify handler\n", obd->obd_name);
1165                 return -ENOSYS;
1166         }
1167
1168         OBD_COUNTER_INCREMENT(obd, notify);
1169         return OBP(obd, notify)(obd, watched, active, data);
1170 }
1171
1172 static inline int obd_register_observer(struct obd_device *obd,
1173                                         struct obd_device *observer)
1174 {
1175         ENTRY;
1176         if (obd->obd_observer && observer)
1177                 RETURN(-EALREADY);
1178         obd->obd_observer = observer;
1179         RETURN(0);
1180 }
1181
1182 static inline int obd_init_ea_size(struct obd_export *exp, int size, int size2)
1183 {
1184         int rc;
1185         ENTRY;
1186         LASSERT(OBP(exp->exp_obd, init_ea_size) != NULL);
1187         OBD_COUNTER_INCREMENT(exp->exp_obd, init_ea_size);
1188         rc = OBP(exp->exp_obd, init_ea_size)(exp, size, size2);
1189         RETURN(rc);
1190 }
1191 static inline int md_getstatus(struct obd_export *exp, struct ll_fid *fid)
1192 {
1193         int rc;
1194
1195         EXP_CHECK_MD_OP(exp, getstatus);
1196         MD_COUNTER_INCREMENT(exp->exp_obd, getstatus);
1197         rc = MDP(exp->exp_obd, getstatus)(exp, fid);
1198         RETURN(rc);
1199 }
1200
1201 /* this function notifies MDC, that inode described by @fid gets removed from
1202  * memory.*/
1203 static inline int md_delete_object(struct obd_export *exp,
1204                                    struct ll_fid *fid)
1205 {
1206         int rc;
1207         ENTRY;
1208
1209         /* as this method only notifies MDC that inode gets deleted, we can
1210          * return zero if method is not implemented, this means, that OBD does
1211          * not need such a notification. */
1212         if (MDP(exp->exp_obd, delete_object) == NULL)
1213                 RETURN(0);
1214
1215         MD_COUNTER_INCREMENT(exp->exp_obd, delete_object);
1216         rc = MDP(exp->exp_obd, delete_object)(exp, fid);
1217         RETURN(rc);
1218 }
1219
1220 static inline int md_getattr(struct obd_export *exp, struct ll_fid *fid,
1221                              unsigned long valid, unsigned int ea_size,
1222                              struct ptlrpc_request **request)
1223 {
1224         int rc;
1225         ENTRY;
1226         EXP_CHECK_MD_OP(exp, getattr);
1227         MD_COUNTER_INCREMENT(exp->exp_obd, getattr);
1228         rc = MDP(exp->exp_obd, getattr)(exp, fid, valid, ea_size, request);
1229         RETURN(rc);
1230 }
1231
1232 static inline int md_change_cbdata(struct obd_export *exp, struct ll_fid *fid,
1233                                    ldlm_iterator_t it, void *data)
1234 {
1235         int rc;
1236         ENTRY;
1237         EXP_CHECK_MD_OP(exp, change_cbdata);
1238         MD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata);
1239         rc = MDP(exp->exp_obd, change_cbdata)(exp, fid, it, data);
1240         RETURN(rc);
1241 }
1242
1243 static inline int md_change_cbdata_name(struct obd_export *exp,
1244                                         struct ll_fid *fid, char *name,
1245                                         int namelen, struct ll_fid *fid2,
1246                                         ldlm_iterator_t it, void *data)
1247 {
1248         int rc;
1249
1250         /* this seem to be needed only for lmv. */
1251         if (!MDP(exp->exp_obd, change_cbdata_name))
1252                 return 0;
1253
1254         ENTRY;
1255
1256         MD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata_name);
1257         rc = MDP(exp->exp_obd, change_cbdata_name)(exp, fid, name, namelen,
1258                                                    fid2, it, data);
1259         RETURN(rc);
1260 }
1261
1262 static inline int md_close(struct obd_export *exp, struct obdo *obdo,
1263                            struct obd_client_handle *och,
1264                            struct ptlrpc_request **request)
1265 {
1266         int rc;
1267         ENTRY;
1268         EXP_CHECK_MD_OP(exp, close);
1269         MD_COUNTER_INCREMENT(exp->exp_obd, close);
1270         rc = MDP(exp->exp_obd, close)(exp, obdo, och, request);
1271         RETURN(rc);
1272 }
1273
1274 static inline int md_create(struct obd_export *exp, struct mdc_op_data *op_data,
1275                             const void *data, int datalen, int mode,
1276                             __u32 uid, __u32 gid, __u64 rdev,
1277                             struct ptlrpc_request **request)
1278 {
1279         int rc;
1280         ENTRY;
1281         EXP_CHECK_MD_OP(exp, create);
1282         MD_COUNTER_INCREMENT(exp->exp_obd, create);
1283         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1284                                        uid, gid, rdev, request);
1285         RETURN(rc);
1286 }
1287
1288 static inline int md_done_writing(struct obd_export *exp, struct obdo *obdo)
1289 {
1290         int rc;
1291         ENTRY;
1292         EXP_CHECK_MD_OP(exp, done_writing);
1293         MD_COUNTER_INCREMENT(exp->exp_obd, done_writing);
1294         rc = MDP(exp->exp_obd, done_writing)(exp, obdo);
1295         RETURN(rc);
1296 }
1297
1298 static inline int md_enqueue(struct obd_export *exp, int lock_type,
1299                              struct lookup_intent *it, int lock_mode,
1300                              struct mdc_op_data *data,
1301                              struct lustre_handle *lockh,
1302                              void *lmm, int lmmsize,
1303                              ldlm_completion_callback cb_completion,
1304                              ldlm_blocking_callback cb_blocking,
1305                              void *cb_data)
1306 {
1307         int rc;
1308         ENTRY;
1309         EXP_CHECK_MD_OP(exp, enqueue);
1310         MD_COUNTER_INCREMENT(exp->exp_obd, enqueue);
1311         rc = MDP(exp->exp_obd, enqueue)(exp, lock_type, it, lock_mode,
1312                                         data, lockh, lmm, lmmsize,
1313                                         cb_completion, cb_blocking,
1314                                         cb_data);
1315         RETURN(rc);
1316 }
1317
1318 static inline int md_getattr_name(struct obd_export *exp, struct ll_fid *fid,
1319                                   char *filename, int namelen,
1320                                   unsigned long valid, unsigned int ea_size,
1321                                   struct ptlrpc_request **request)
1322 {
1323         int rc;
1324         ENTRY;
1325         EXP_CHECK_MD_OP(exp, getattr_name);
1326         MD_COUNTER_INCREMENT(exp->exp_obd, getattr_name);
1327         rc = MDP(exp->exp_obd, getattr_name)(exp, fid, filename, namelen,
1328                                              valid, ea_size, request);
1329         RETURN(rc);
1330 }
1331
1332 static inline int md_intent_lock(struct obd_export *exp,
1333                                  struct ll_fid *pfid, const char *name,
1334                                  int len, void *lmm, int lmmsize,
1335                                  struct ll_fid *cfid, struct lookup_intent *it,
1336                                  int flags, struct ptlrpc_request **reqp,
1337                                  ldlm_blocking_callback cb_blocking)
1338 {
1339         int rc;
1340         ENTRY;
1341         EXP_CHECK_MD_OP(exp, intent_lock);
1342         MD_COUNTER_INCREMENT(exp->exp_obd, intent_lock);
1343         rc = MDP(exp->exp_obd, intent_lock)(exp, pfid, name, len,
1344                                             lmm, lmmsize, cfid, it, flags,
1345                                             reqp, cb_blocking);
1346         RETURN(rc);
1347 }
1348
1349 static inline int md_link(struct obd_export *exp, struct mdc_op_data *data,
1350                           struct ptlrpc_request **request)
1351 {
1352         int rc;
1353         ENTRY;
1354         EXP_CHECK_MD_OP(exp, link);
1355         MD_COUNTER_INCREMENT(exp->exp_obd, link);
1356         rc = MDP(exp->exp_obd, link)(exp, data, request);
1357         RETURN(rc);
1358 }
1359
1360 static inline int md_rename(struct obd_export *exp, struct mdc_op_data *data,
1361                             const char *old, int oldlen,
1362                             const char *new, int newlen,
1363                             struct ptlrpc_request **request)
1364 {
1365         int rc;
1366         ENTRY;
1367         EXP_CHECK_MD_OP(exp, rename);
1368         MD_COUNTER_INCREMENT(exp->exp_obd, rename);
1369         rc = MDP(exp->exp_obd, rename)(exp, data, old, oldlen, new,
1370                                        newlen, request);
1371         RETURN(rc);
1372 }
1373
1374 static inline int md_setattr(struct obd_export *exp, struct mdc_op_data *data,
1375                              struct iattr *iattr, void *ea, int ealen,
1376                              void *ea2, int ea2len,
1377                              struct ptlrpc_request **request)
1378 {
1379         int rc;
1380         ENTRY;
1381         EXP_CHECK_MD_OP(exp, setattr);
1382         MD_COUNTER_INCREMENT(exp->exp_obd, setattr);
1383         rc = MDP(exp->exp_obd, setattr)(exp, data, iattr, ea, ealen,
1384                                         ea2, ea2len, request);
1385         RETURN(rc);
1386 }
1387
1388 static inline int md_sync(struct obd_export *exp, struct ll_fid *fid,
1389                                struct ptlrpc_request **request)
1390 {
1391         int rc;
1392         ENTRY;
1393         EXP_CHECK_MD_OP(exp, sync);
1394         MD_COUNTER_INCREMENT(exp->exp_obd, sync);
1395         rc = MDP(exp->exp_obd, sync)(exp, fid, request);
1396         RETURN(rc);
1397 }
1398
1399 static inline int md_readpage(struct obd_export *exp, struct ll_fid *fid,
1400                               __u64 offset, struct page *page,
1401                               struct ptlrpc_request **request)
1402 {
1403         int rc;
1404         ENTRY;
1405         EXP_CHECK_MD_OP(exp, readpage);
1406         MD_COUNTER_INCREMENT(exp->exp_obd, readpage);
1407         rc = MDP(exp->exp_obd, readpage)(exp, fid, offset, page, request);
1408         RETURN(rc);
1409 }
1410
1411 static inline int md_unlink(struct obd_export *exp, struct mdc_op_data *data,
1412                             struct ptlrpc_request **request)
1413 {
1414         int rc;
1415         ENTRY;
1416         EXP_CHECK_MD_OP(exp, unlink);
1417         MD_COUNTER_INCREMENT(exp->exp_obd, unlink);
1418         rc = MDP(exp->exp_obd, unlink)(exp, data, request);
1419         RETURN(rc);
1420 }
1421
1422 static inline struct obd_device *md_get_real_obd(struct obd_export *exp,
1423                                                  char *name, int len)
1424 {
1425         ENTRY;
1426         if (MDP(exp->exp_obd, get_real_obd) == NULL)
1427                 return exp->exp_obd;
1428         MD_COUNTER_INCREMENT(exp->exp_obd, get_real_obd);
1429         return MDP(exp->exp_obd, get_real_obd)(exp, name, len);
1430 }
1431
1432 static inline int md_valid_attrs(struct obd_export *exp, struct ll_fid *fid)
1433 {
1434         ENTRY;
1435         EXP_CHECK_MD_OP(exp, valid_attrs);
1436         MD_COUNTER_INCREMENT(exp->exp_obd, valid_attrs);
1437         return MDP(exp->exp_obd, valid_attrs)(exp, fid);
1438 }
1439
1440 static inline int md_req2lustre_md(struct obd_export *exp,
1441                                    struct ptlrpc_request *req,
1442                                    unsigned int offset,
1443                                    struct obd_export *osc_exp,
1444                                    struct lustre_md *md)
1445 {
1446         ENTRY;
1447         EXP_CHECK_MD_OP(exp, req2lustre_md);
1448         MD_COUNTER_INCREMENT(exp->exp_obd, req2lustre_md);
1449         return MDP(exp->exp_obd, req2lustre_md)(exp, req, offset, osc_exp, md);
1450 }
1451
1452 static inline int md_set_open_replay_data(struct obd_export *exp,
1453                                           struct obd_client_handle *och,
1454                                           struct ptlrpc_request *open_req)
1455 {
1456         ENTRY;
1457         EXP_CHECK_MD_OP(exp, set_open_replay_data);
1458         MD_COUNTER_INCREMENT(exp->exp_obd, set_open_replay_data);
1459         return MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req);
1460 }
1461
1462 static inline int md_clear_open_replay_data(struct obd_export *exp,
1463                                             struct obd_client_handle *och)
1464 {
1465         ENTRY;
1466         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
1467         MD_COUNTER_INCREMENT(exp->exp_obd, clear_open_replay_data);
1468         return MDP(exp->exp_obd, clear_open_replay_data)(exp, och);
1469 }
1470
1471 static inline int md_store_inode_generation(struct obd_export *exp,
1472                                             struct ptlrpc_request *req,
1473                                             int reqoff, int repoff)
1474 {
1475         ENTRY;
1476         EXP_CHECK_MD_OP(exp, store_inode_generation);
1477         MD_COUNTER_INCREMENT(exp->exp_obd, store_inode_generation);
1478         return MDP(exp->exp_obd, store_inode_generation)(exp, req,
1479                    reqoff, repoff);
1480 }
1481
1482 static inline int md_set_lock_data(struct obd_export *exp, __u64 *l, void *data)
1483 {
1484         ENTRY;
1485         EXP_CHECK_MD_OP(exp, set_lock_data);
1486         MD_COUNTER_INCREMENT(exp->exp_obd, set_lock_data);
1487         return MDP(exp->exp_obd, set_lock_data)(exp, l, data);
1488 }
1489
1490 /* OBD Metadata Support */
1491
1492 extern int obd_init_caches(void);
1493 extern void obd_cleanup_caches(void);
1494
1495 /* support routines */
1496 extern kmem_cache_t *obdo_cachep;
1497 static inline struct obdo *obdo_alloc(void)
1498 {
1499         struct obdo *oa;
1500
1501         OBD_SLAB_ALLOC(oa, obdo_cachep, GFP_KERNEL, sizeof(*oa));
1502
1503         return oa;
1504 }
1505
1506 static inline void obdo_free(struct obdo *oa)
1507 {
1508         if (!oa)
1509                 return;
1510         OBD_SLAB_FREE(oa, obdo_cachep, sizeof(*oa));
1511 }
1512
1513 #if !defined(__KERNEL__) || (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
1514 #define to_kdev_t(dev) dev
1515 #define kdev_t_to_nr(dev) dev
1516 #endif
1517
1518 /* I'm as embarrassed about this as you are.
1519  *
1520  * <shaver> // XXX do not look into _superhack with remaining eye
1521  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
1522 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
1523 extern void (*ptlrpc_abort_inflight_superhack)(struct obd_import *imp);
1524
1525 /* sysctl.c */
1526 extern void obd_sysctl_init (void);
1527 extern void obd_sysctl_clean (void);
1528
1529 /* uuid.c  */
1530 typedef __u8 class_uuid_t[16];
1531 //int class_uuid_parse(struct obd_uuid in, class_uuid_t out);
1532 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
1533
1534 /* lustre_peer.c    */
1535 int lustre_uuid_to_peer(char *uuid, __u32 *peer_nal, ptl_nid_t *peer_nid);
1536 int class_add_uuid(char *uuid, __u64 nid, __u32 nal);
1537 int class_del_uuid (char *uuid);
1538 void class_init_uuidlist(void);
1539 void class_exit_uuidlist(void);
1540
1541 /* mea.c */
1542 int mea_name2idx(struct mea *mea, char *name, int namelen);
1543 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
1544
1545 #endif /* __LINUX_OBD_CLASS_H */