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_connect_post(struct obd_export *exp)
 641 {
 642         int rc;
 643         ENTRY;
 644
 645         OBD_CHECK_DEV_ACTIVE(exp->exp_obd);
 646         if (!OBT(exp->exp_obd) || !OBP((exp->exp_obd), connect_post))
 647                 RETURN(0);
 648         OBD_COUNTER_INCREMENT(exp->exp_obd, connect_post);
 649         rc = OBP(exp->exp_obd, connect_post)(exp);
 650         RETURN(rc);
 651 }
 652
 653 static inline int obd_disconnect(struct obd_export *exp, int flags)
 654 {
 655         int rc;
 656         ENTRY;
 657
 658         EXP_CHECK_OP(exp, disconnect);
 659         OBD_COUNTER_INCREMENT(exp->exp_obd, disconnect);
 660
 661         rc = OBP(exp->exp_obd, disconnect)(exp, flags);
 662         RETURN(rc);
 663 }
 664
 665 static inline int obd_init_export(struct obd_export *exp)
 666 {
 667         int rc = 0;
 668
 669         ENTRY;
 670         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 671             OBP((exp)->exp_obd, init_export))
 672                 rc = OBP(exp->exp_obd, init_export)(exp);
 673         RETURN(rc);
 674 }
 675
 676 static inline int obd_destroy_export(struct obd_export *exp)
 677 {
 678         ENTRY;
 679         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 680             OBP((exp)->exp_obd, destroy_export))
 681                 OBP(exp->exp_obd, destroy_export)(exp);
 682         RETURN(0);
 683 }
 684
 685 static inline struct dentry *
 686 obd_lvfs_fid2dentry(struct obd_export *exp, __u64 id_ino, __u32 gen, __u64 gr)
 687 {
 688         LASSERT(exp->exp_obd);
 689
 690         return lvfs_fid2dentry(&exp->exp_obd->obd_lvfs_ctxt, id_ino, gen, gr,
 691                                exp->exp_obd);
 692 }
 693
 694 #ifndef time_before
 695 #define time_before(t1, t2) ((long)t2 - (long)t1 > 0)
 696 #endif
 697
 698 /* @max_age is the oldest time in jiffies that we accept using a cached data.
 699  * If the cache is older than @max_age we will get a new value from the
 700  * target.  Use a value of "jiffies + HZ" to guarantee freshness. */
 701 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
 702                              unsigned long max_age)
 703 {
 704         int rc = 0;
 705         ENTRY;
 706
 707         if (obd == NULL)
 708                 RETURN(-EINVAL);
 709
 710         OBD_CHECK_OP(obd, statfs, -EOPNOTSUPP);
 711         OBD_COUNTER_INCREMENT(obd, statfs);
 712
 713         CDEBUG(D_SUPER, "osfs %lu, max_age %lu\n", obd->obd_osfs_age, max_age);
 714         if (time_before(obd->obd_osfs_age, max_age)) {
 715                 rc = OBP(obd, statfs)(obd, osfs, max_age);
 716                 if (rc == 0) {
 717                         spin_lock(&obd->obd_osfs_lock);
 718                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
 719                         obd->obd_osfs_age = jiffies;
 720                         spin_unlock(&obd->obd_osfs_lock);
 721                 }
 722         } else {
 723                 CDEBUG(D_SUPER, "using cached obd_statfs data\n");
 724                 spin_lock(&obd->obd_osfs_lock);
 725                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
 726                 spin_unlock(&obd->obd_osfs_lock);
 727         }
 728         RETURN(rc);
 729 }
 730
 731 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
 732                            struct lov_stripe_md *ea, obd_size start,
 733                            obd_size end)
 734 {
 735         int rc;
 736         ENTRY;
 737
 738         OBD_CHECK_OP(exp->exp_obd, sync, -EOPNOTSUPP);
 739         OBD_COUNTER_INCREMENT(exp->exp_obd, sync);
 740
 741         rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end);
 742         RETURN(rc);
 743 }
 744
 745 static inline int obd_punch(struct obd_export *exp, struct obdo *oa,
 746                             struct lov_stripe_md *ea, obd_size start,
 747                             obd_size end, struct obd_trans_info *oti)
 748 {
 749         int rc;
 750         ENTRY;
 751
 752         EXP_CHECK_OP(exp, punch);
 753         OBD_COUNTER_INCREMENT(exp->exp_obd, punch);
 754
 755         rc = OBP(exp->exp_obd, punch)(exp, oa, ea, start, end, oti);
 756         RETURN(rc);
 757 }
 758
 759 static inline int obd_brw(int cmd, struct obd_export *exp, struct obdo *oa,
 760                           struct lov_stripe_md *ea, obd_count oa_bufs,
 761                           struct brw_page *pg, struct obd_trans_info *oti)
 762 {
 763         int rc;
 764         ENTRY;
 765
 766         EXP_CHECK_OP(exp, brw);
 767         OBD_COUNTER_INCREMENT(exp->exp_obd, brw);
 768
 769         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
 770                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
 771                        "or OBD_BRW_CHECK\n");
 772                 LBUG();
 773         }
 774
 775         rc = OBP(exp->exp_obd, brw)(cmd, exp, oa, ea, oa_bufs, pg, oti);
 776         RETURN(rc);
 777 }
 778
 779 static inline int obd_brw_async(int cmd, struct obd_export *exp,
 780                                 struct obdo *oa, struct lov_stripe_md *ea,
 781                                 obd_count oa_bufs, struct brw_page *pg,
 782                                 struct ptlrpc_request_set *set,
 783                                 struct obd_trans_info *oti)
 784 {
 785         int rc;
 786         ENTRY;
 787
 788         EXP_CHECK_OP(exp, brw_async);
 789         OBD_COUNTER_INCREMENT(exp->exp_obd, brw_async);
 790
 791         if (!(cmd & OBD_BRW_RWMASK)) {
 792                 CERROR("obd_brw: cmd must be OBD_BRW_READ or OBD_BRW_WRITE\n");
 793                 LBUG();
 794         }
 795
 796         rc = OBP(exp->exp_obd, brw_async)(cmd, exp, oa, ea, oa_bufs, pg, set,
 797                                           oti);
 798         RETURN(rc);
 799 }
 800
 801 static inline  int obd_prep_async_page(struct obd_export *exp,
 802                                        struct lov_stripe_md *lsm,
 803                                        struct lov_oinfo *loi,
 804                                        struct page *page, obd_off offset,
 805                                        struct obd_async_page_ops *ops,
 806                                        void *data, void **res)
 807 {
 808         int ret;
 809         ENTRY;
 810
 811         OBD_CHECK_OP(exp->exp_obd, prep_async_page, -EOPNOTSUPP);
 812         OBD_COUNTER_INCREMENT(exp->exp_obd, prep_async_page);
 813
 814         ret = OBP(exp->exp_obd, prep_async_page)(exp, lsm, loi, page, offset,
 815                                                  ops, data, res);
 816         RETURN(ret);
 817 }
 818
 819 static inline int obd_queue_async_io(struct obd_export *exp,
 820                                      struct lov_stripe_md *lsm,
 821                                      struct lov_oinfo *loi, void *cookie,
 822                                      int cmd, obd_off off, int count,
 823                                      obd_flag brw_flags, obd_flag async_flags)
 824 {
 825         int rc;
 826         ENTRY;
 827
 828         OBD_CHECK_OP(exp->exp_obd, queue_async_io, -EOPNOTSUPP);
 829         OBD_COUNTER_INCREMENT(exp->exp_obd, queue_async_io);
 830         LASSERT(cmd & OBD_BRW_RWMASK);
 831
 832         rc = OBP(exp->exp_obd, queue_async_io)(exp, lsm, loi, cookie, cmd, off,
 833                                                count, brw_flags, async_flags);
 834         RETURN(rc);
 835 }
 836
 837 static inline int obd_set_async_flags(struct obd_export *exp,
 838                                       struct lov_stripe_md *lsm,
 839                                       struct lov_oinfo *loi, void *cookie,
 840                                       obd_flag async_flags)
 841 {
 842         int rc;
 843         ENTRY;
 844
 845         OBD_CHECK_OP(exp->exp_obd, set_async_flags, -EOPNOTSUPP);
 846         OBD_COUNTER_INCREMENT(exp->exp_obd, set_async_flags);
 847
 848         rc = OBP(exp->exp_obd, set_async_flags)(exp, lsm, loi, cookie,
 849                                                 async_flags);
 850         RETURN(rc);
 851 }
 852
 853 static inline int obd_queue_group_io(struct obd_export *exp,
 854                                      struct lov_stripe_md *lsm,
 855                                      struct lov_oinfo *loi,
 856                                      struct obd_io_group *oig,
 857                                      void *cookie, int cmd, obd_off off,
 858                                      int count, obd_flag brw_flags,
 859                                      obd_flag async_flags)
 860 {
 861         int rc;
 862         ENTRY;
 863
 864         OBD_CHECK_OP(exp->exp_obd, queue_group_io, -EOPNOTSUPP);
 865         OBD_COUNTER_INCREMENT(exp->exp_obd, queue_group_io);
 866         LASSERT(cmd & OBD_BRW_RWMASK);
 867
 868         rc = OBP(exp->exp_obd, queue_group_io)(exp, lsm, loi, oig, cookie,
 869                                                cmd, off, count, brw_flags,
 870                                                async_flags);
 871         RETURN(rc);
 872 }
 873
 874 static inline int obd_trigger_group_io(struct obd_export *exp,
 875                                        struct lov_stripe_md *lsm,
 876                                        struct lov_oinfo *loi,
 877                                        struct obd_io_group *oig)
 878 {
 879         int rc;
 880         ENTRY;
 881
 882         OBD_CHECK_OP(exp->exp_obd, trigger_group_io, -EOPNOTSUPP);
 883         OBD_COUNTER_INCREMENT(exp->exp_obd, trigger_group_io);
 884
 885         rc = OBP(exp->exp_obd, trigger_group_io)(exp, lsm, loi, oig);
 886         RETURN(rc);
 887 }
 888
 889 static inline int obd_teardown_async_page(struct obd_export *exp,
 890                                           struct lov_stripe_md *lsm,
 891                                           struct lov_oinfo *loi, void *cookie)
 892 {
 893         int rc;
 894         ENTRY;
 895
 896         OBD_CHECK_OP(exp->exp_obd, teardown_async_page, -EOPNOTSUPP);
 897         OBD_COUNTER_INCREMENT(exp->exp_obd, teardown_async_page);
 898
 899         rc = OBP(exp->exp_obd, teardown_async_page)(exp, lsm, loi, cookie);
 900         RETURN(rc);
 901 }
 902
 903 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
 904                              int objcount, struct obd_ioobj *obj,
 905                              int niocount, struct niobuf_remote *remote,
 906                              struct niobuf_local *local,
 907                              struct obd_trans_info *oti)
 908 {
 909         int rc;
 910         ENTRY;
 911
 912         OBD_CHECK_OP(exp->exp_obd, preprw, -EOPNOTSUPP);
 913         OBD_COUNTER_INCREMENT(exp->exp_obd, preprw);
 914
 915         rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, niocount,
 916                                        remote, local, oti);
 917         RETURN(rc);
 918 }
 919
 920 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
 921                                int objcount, struct obd_ioobj *obj,
 922                                int niocount, struct niobuf_local *local,
 923                                struct obd_trans_info *oti, int rc)
 924 {
 925         ENTRY;
 926
 927         OBD_CHECK_OP(exp->exp_obd, commitrw, -EOPNOTSUPP);
 928         OBD_COUNTER_INCREMENT(exp->exp_obd, commitrw);
 929
 930         rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj, niocount,
 931                                          local, oti, rc);
 932         RETURN(rc);
 933 }
 934
 935 static inline int obd_do_cow(struct obd_export *exp, struct obd_ioobj *obj,
 936                             int objcount,struct niobuf_remote *rnb)
 937 {
 938         int rc;
 939         ENTRY;
 940
 941         /* there are cases when write_extents is not implemented. */
 942         if (!OBP(exp->exp_obd, do_cow))
 943                 RETURN(0);
 944
 945         OBD_COUNTER_INCREMENT(exp->exp_obd, do_cow);
 946
 947         rc = OBP(exp->exp_obd, do_cow)(exp, obj, objcount, rnb);
 948
 949         RETURN(rc);
 950 }
 951
 952 static inline int obd_write_extents(struct obd_export *exp,
 953                                     struct obd_ioobj *obj,
 954                                     int objcount, int niocount,
 955                                     struct niobuf_local *local,
 956                                     int rc)
 957 {
 958         ENTRY;
 959
 960         /* there are cases when write_extents is not implemented. */
 961         if (!OBP(exp->exp_obd, write_extents))
 962                 RETURN(0);
 963
 964         OBD_COUNTER_INCREMENT(exp->exp_obd, write_extents);
 965
 966         rc = OBP(exp->exp_obd, write_extents)(exp, obj, objcount, niocount,
 967                                               local, rc);
 968         RETURN(rc);
 969 }
 970
 971 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
 972                                 int len, void *karg, void *uarg)
 973 {
 974         int rc;
 975         ENTRY;
 976
 977         EXP_CHECK_OP(exp, iocontrol);
 978         OBD_COUNTER_INCREMENT(exp->exp_obd, iocontrol);
 979
 980         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
 981         RETURN(rc);
 982 }
 983
 984 static inline int obd_enqueue(struct obd_export *exp, struct lov_stripe_md *ea,
 985                               __u32 type, ldlm_policy_data_t *policy,
 986                               __u32 mode, int *flags, void *bl_cb, void *cp_cb,
 987                               void *gl_cb, void *data, __u32 lvb_len,
 988                               void *lvb_swabber, struct lustre_handle *lockh)
 989 {
 990         int rc;
 991         ENTRY;
 992
 993         EXP_CHECK_OP(exp, enqueue);
 994         OBD_COUNTER_INCREMENT(exp->exp_obd, enqueue);
 995
 996         rc = OBP(exp->exp_obd, enqueue)(exp, ea, type, policy, mode, flags,
 997                                         bl_cb, cp_cb, gl_cb, data, lvb_len,
 998                                         lvb_swabber, lockh);
 999         RETURN(rc);
1000 }
1001
1002 static inline int obd_match(struct obd_export *exp, struct lov_stripe_md *ea,
1003                             __u32 type, ldlm_policy_data_t *policy, __u32 mode,
1004                             int *flags, void *data, struct lustre_handle *lockh)
1005 {
1006         int rc;
1007         ENTRY;
1008
1009         EXP_CHECK_OP(exp, match);
1010         OBD_COUNTER_INCREMENT(exp->exp_obd, match);
1011
1012         rc = OBP(exp->exp_obd, match)(exp, ea, type, policy, mode, flags, data,
1013                                       lockh);
1014         RETURN(rc);
1015 }
1016
1017 static inline int obd_change_cbdata(struct obd_export *exp,
1018                                     struct lov_stripe_md *lsm,
1019                                     ldlm_iterator_t it, void *data)
1020 {
1021         int rc;
1022         ENTRY;
1023
1024         EXP_CHECK_OP(exp, change_cbdata);
1025         OBD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata);
1026
1027         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1028         RETURN(rc);
1029 }
1030
1031 static inline int obd_cancel(struct obd_export *exp,
1032                              struct lov_stripe_md *ea, __u32 mode,
1033                              struct lustre_handle *lockh)
1034 {
1035         int rc;
1036         ENTRY;
1037
1038         EXP_CHECK_OP(exp, cancel);
1039         OBD_COUNTER_INCREMENT(exp->exp_obd, cancel);
1040
1041         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1042         RETURN(rc);
1043 }
1044
1045 static inline int obd_cancel_unused(struct obd_export *exp,
1046                                     struct lov_stripe_md *ea, int flags,
1047                                     void *opaque)
1048 {
1049         int rc;
1050         ENTRY;
1051
1052         EXP_CHECK_OP(exp, cancel_unused);
1053         OBD_COUNTER_INCREMENT(exp->exp_obd, cancel_unused);
1054
1055         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1056         RETURN(rc);
1057 }
1058
1059
1060 static inline int obd_san_preprw(int cmd, struct obd_export *exp,
1061                                  struct obdo *oa,
1062                                  int objcount, struct obd_ioobj *obj,
1063                                  int niocount, struct niobuf_remote *remote)
1064 {
1065         int rc;
1066
1067         EXP_CHECK_OP(exp, preprw);
1068         OBD_COUNTER_INCREMENT(exp->exp_obd, preprw);
1069
1070         rc = OBP(exp->exp_obd, san_preprw)(cmd, exp, oa, objcount, obj,
1071                                            niocount, remote);
1072         class_export_put(exp);
1073         return(rc);
1074 }
1075
1076 static inline int obd_pin(struct obd_export *exp, obd_id ino, __u32 gen,
1077                           int type, struct obd_client_handle *handle, int flag)
1078 {
1079         int rc;
1080
1081         EXP_CHECK_OP(exp, pin);
1082         OBD_COUNTER_INCREMENT(exp->exp_obd, pin);
1083
1084         rc = OBP(exp->exp_obd, pin)(exp, ino, gen, type, handle, flag);
1085         return(rc);
1086 }
1087
1088 static inline int obd_unpin(struct obd_export *exp,
1089                             struct obd_client_handle *handle, int flag)
1090 {
1091         int rc;
1092
1093         EXP_CHECK_OP(exp, unpin);
1094         OBD_COUNTER_INCREMENT(exp->exp_obd, unpin);
1095
1096         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1097         return(rc);
1098 }
1099
1100
1101 static inline void obd_import_event(struct obd_device *obd,
1102                                     struct obd_import *imp,
1103                                     enum obd_import_event event)
1104 {
1105         if (obd->obd_set_up && OBP(obd, import_event)) {
1106                 OBD_COUNTER_INCREMENT(obd, import_event);
1107                 OBP(obd, import_event)(obd, imp, event);
1108         }
1109 }
1110
1111 static inline int obd_llog_connect(struct obd_export *exp,
1112                                         struct llogd_conn_body *body)
1113 {
1114         ENTRY;
1115         EXP_CHECK_OP(exp, llog_connect);
1116         return OBP(exp->exp_obd, llog_connect)(exp, body);
1117 }
1118
1119 static inline int obd_notify(struct obd_device *obd,
1120                              struct obd_device *watched,
1121                              int active)
1122 {
1123         if (!obd->obd_set_up) {
1124                 CERROR("obd %s not set up\n", obd->obd_name);
1125                 return -EINVAL;
1126         }
1127
1128         if (!OBP(obd, notify)) {
1129                 CERROR("obd %s has no notify handler\n", obd->obd_name);
1130                 return -ENOSYS;
1131         }
1132
1133         OBD_COUNTER_INCREMENT(obd, notify);
1134         return OBP(obd, notify)(obd, watched, active);
1135 }
1136
1137 static inline int obd_register_observer(struct obd_device *obd,
1138                                         struct obd_device *observer)
1139 {
1140         ENTRY;
1141         if (obd->obd_observer && observer)
1142                 RETURN(-EALREADY);
1143         obd->obd_observer = observer;
1144         RETURN(0);
1145 }
1146
1147 static inline int obd_init_ea_size(struct obd_export *exp, int size, int size2)
1148 {
1149         int rc;
1150         ENTRY;
1151         LASSERT(OBP(exp->exp_obd, init_ea_size) != NULL);
1152         OBD_COUNTER_INCREMENT(exp->exp_obd, init_ea_size);
1153         rc = OBP(exp->exp_obd, init_ea_size)(exp, size, size2);
1154         RETURN(rc);
1155 }
1156
1157 static inline int md_getstatus(struct obd_export *exp, struct ll_fid *fid)
1158 {
1159         int rc;
1160
1161         EXP_CHECK_MD_OP(exp, getstatus);
1162         MD_COUNTER_INCREMENT(exp->exp_obd, getstatus);
1163         rc = MDP(exp->exp_obd, getstatus)(exp, fid);
1164         RETURN(rc);
1165 }
1166
1167 /* this function notifies MDC, that inode described by @fid gets removed from
1168  * memory.*/
1169 static inline int md_delete_object(struct obd_export *exp,
1170                                    struct ll_fid *fid)
1171 {
1172         int rc;
1173         ENTRY;
1174
1175         /* as this method only notifies MDC that inode gets deleted, we can
1176          * return zero if method is not implemented, this means, that OBD does
1177          * not need such a notification. */
1178         if (MDP(exp->exp_obd, delete_object) == NULL)
1179                 RETURN(0);
1180
1181         MD_COUNTER_INCREMENT(exp->exp_obd, delete_object);
1182         rc = MDP(exp->exp_obd, delete_object)(exp, fid);
1183         RETURN(rc);
1184 }
1185
1186 static inline int md_getattr(struct obd_export *exp, struct ll_fid *fid,
1187                              unsigned long valid, unsigned int ea_size,
1188                              struct ptlrpc_request **request)
1189 {
1190         int rc;
1191         ENTRY;
1192         EXP_CHECK_MD_OP(exp, getattr);
1193         MD_COUNTER_INCREMENT(exp->exp_obd, getattr);
1194         rc = MDP(exp->exp_obd, getattr)(exp, fid, valid, ea_size, request);
1195         RETURN(rc);
1196 }
1197
1198 static inline int md_change_cbdata(struct obd_export *exp, struct ll_fid *fid,
1199                                    ldlm_iterator_t it, void *data)
1200 {
1201         int rc;
1202         ENTRY;
1203         EXP_CHECK_MD_OP(exp, change_cbdata);
1204         MD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata);
1205         rc = MDP(exp->exp_obd, change_cbdata)(exp, fid, it, data);
1206         RETURN(rc);
1207 }
1208
1209 static inline int md_change_cbdata_name(struct obd_export *exp,
1210                                         struct ll_fid *fid, char *name,
1211                                         int namelen, struct ll_fid *fid2,
1212                                         ldlm_iterator_t it, void *data)
1213 {
1214         int rc;
1215
1216         /* this seem to be needed only for lmv. */
1217         if (!MDP(exp->exp_obd, change_cbdata_name))
1218                 return 0;
1219
1220         ENTRY;
1221
1222         MD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata_name);
1223         rc = MDP(exp->exp_obd, change_cbdata_name)(exp, fid, name, namelen,
1224                                                    fid2, it, data);
1225         RETURN(rc);
1226 }
1227
1228 static inline int md_close(struct obd_export *exp, struct obdo *obdo,
1229                            struct obd_client_handle *och,
1230                            struct ptlrpc_request **request)
1231 {
1232         int rc;
1233         ENTRY;
1234         EXP_CHECK_MD_OP(exp, close);
1235         MD_COUNTER_INCREMENT(exp->exp_obd, close);
1236         rc = MDP(exp->exp_obd, close)(exp, obdo, och, request);
1237         RETURN(rc);
1238 }
1239
1240 static inline int md_create(struct obd_export *exp, struct mdc_op_data *op_data,
1241                             const void *data, int datalen, int mode,
1242                             __u32 uid, __u32 gid, __u64 rdev,
1243                             struct ptlrpc_request **request)
1244 {
1245         int rc;
1246         ENTRY;
1247         EXP_CHECK_MD_OP(exp, create);
1248         MD_COUNTER_INCREMENT(exp->exp_obd, create);
1249         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1250                                        uid, gid, rdev, request);
1251         RETURN(rc);
1252 }
1253
1254 static inline int md_done_writing(struct obd_export *exp, struct obdo *obdo)
1255 {
1256         int rc;
1257         ENTRY;
1258         EXP_CHECK_MD_OP(exp, done_writing);
1259         MD_COUNTER_INCREMENT(exp->exp_obd, done_writing);
1260         rc = MDP(exp->exp_obd, done_writing)(exp, obdo);
1261         RETURN(rc);
1262 }
1263
1264 static inline int md_enqueue(struct obd_export *exp, int lock_type,
1265                              struct lookup_intent *it, int lock_mode,
1266                              struct mdc_op_data *data,
1267                              struct lustre_handle *lockh,
1268                              void *lmm, int lmmsize,
1269                              ldlm_completion_callback cb_completion,
1270                              ldlm_blocking_callback cb_blocking,
1271                              void *cb_data)
1272 {
1273         int rc;
1274         ENTRY;
1275         EXP_CHECK_MD_OP(exp, enqueue);
1276         MD_COUNTER_INCREMENT(exp->exp_obd, enqueue);
1277         rc = MDP(exp->exp_obd, enqueue)(exp, lock_type, it, lock_mode,
1278                                         data, lockh, lmm, lmmsize,
1279                                         cb_completion, cb_blocking,
1280                                         cb_data);
1281         RETURN(rc);
1282 }
1283
1284 static inline int md_getattr_name(struct obd_export *exp, struct ll_fid *fid,
1285                                   char *filename, int namelen,
1286                                   unsigned long valid, unsigned int ea_size,
1287                                   struct ptlrpc_request **request)
1288 {
1289         int rc;
1290         ENTRY;
1291         EXP_CHECK_MD_OP(exp, getattr_name);
1292         MD_COUNTER_INCREMENT(exp->exp_obd, getattr_name);
1293         rc = MDP(exp->exp_obd, getattr_name)(exp, fid, filename, namelen,
1294                                              valid, ea_size, request);
1295         RETURN(rc);
1296 }
1297
1298 static inline int md_intent_lock(struct obd_export *exp, struct ll_uctxt *uctxt,
1299                                  struct ll_fid *pfid, const char *name,
1300                                  int len, void *lmm, int lmmsize,
1301                                  struct ll_fid *cfid, struct lookup_intent *it,
1302                                  int flags, struct ptlrpc_request **reqp,
1303                                  ldlm_blocking_callback cb_blocking)
1304 {
1305         int rc;
1306         ENTRY;
1307         EXP_CHECK_MD_OP(exp, intent_lock);
1308         MD_COUNTER_INCREMENT(exp->exp_obd, intent_lock);
1309         rc = MDP(exp->exp_obd, intent_lock)(exp, uctxt, pfid, name, len,
1310                                             lmm, lmmsize, cfid, it, flags,
1311                                             reqp, cb_blocking);
1312         RETURN(rc);
1313 }
1314
1315 static inline int md_link(struct obd_export *exp, struct mdc_op_data *data,
1316                           struct ptlrpc_request **request)
1317 {
1318         int rc;
1319         ENTRY;
1320         EXP_CHECK_MD_OP(exp, link);
1321         MD_COUNTER_INCREMENT(exp->exp_obd, link);
1322         rc = MDP(exp->exp_obd, link)(exp, data, request);
1323         RETURN(rc);
1324 }
1325
1326 static inline int md_rename(struct obd_export *exp, struct mdc_op_data *data,
1327                             const char *old, int oldlen,
1328                             const char *new, int newlen,
1329                             struct ptlrpc_request **request)
1330 {
1331         int rc;
1332         ENTRY;
1333         EXP_CHECK_MD_OP(exp, rename);
1334         MD_COUNTER_INCREMENT(exp->exp_obd, rename);
1335         rc = MDP(exp->exp_obd, rename)(exp, data, old, oldlen, new,
1336                                        newlen, request);
1337         RETURN(rc);
1338 }
1339
1340 static inline int md_setattr(struct obd_export *exp, struct mdc_op_data *data,
1341                              struct iattr *iattr, void *ea, int ealen,
1342                              void *ea2, int ea2len,
1343                              struct ptlrpc_request **request)
1344 {
1345         int rc;
1346         ENTRY;
1347         EXP_CHECK_MD_OP(exp, setattr);
1348         MD_COUNTER_INCREMENT(exp->exp_obd, setattr);
1349         rc = MDP(exp->exp_obd, setattr)(exp, data, iattr, ea, ealen,
1350                                         ea2, ea2len, request);
1351         RETURN(rc);
1352 }
1353
1354 static inline int md_sync(struct obd_export *exp, struct ll_fid *fid,
1355                                struct ptlrpc_request **request)
1356 {
1357         int rc;
1358         ENTRY;
1359         EXP_CHECK_MD_OP(exp, sync);
1360         MD_COUNTER_INCREMENT(exp->exp_obd, sync);
1361         rc = MDP(exp->exp_obd, sync)(exp, fid, request);
1362         RETURN(rc);
1363 }
1364
1365 static inline int md_readpage(struct obd_export *exp, struct ll_fid *fid,
1366                               __u64 offset, struct page *page,
1367                               struct ptlrpc_request **request)
1368 {
1369         int rc;
1370         ENTRY;
1371         EXP_CHECK_MD_OP(exp, readpage);
1372         MD_COUNTER_INCREMENT(exp->exp_obd, readpage);
1373         rc = MDP(exp->exp_obd, readpage)(exp, fid, offset, page, request);
1374         RETURN(rc);
1375 }
1376
1377 static inline int md_unlink(struct obd_export *exp, struct mdc_op_data *data,
1378                             struct ptlrpc_request **request)
1379 {
1380         int rc;
1381         ENTRY;
1382         EXP_CHECK_MD_OP(exp, unlink);
1383         MD_COUNTER_INCREMENT(exp->exp_obd, unlink);
1384         rc = MDP(exp->exp_obd, unlink)(exp, data, request);
1385         RETURN(rc);
1386 }
1387
1388 static inline struct obd_device *md_get_real_obd(struct obd_export *exp,
1389                                                  char *name, int len)
1390 {
1391         ENTRY;
1392         if (MDP(exp->exp_obd, get_real_obd) == NULL)
1393                 return exp->exp_obd;
1394         MD_COUNTER_INCREMENT(exp->exp_obd, get_real_obd);
1395         return MDP(exp->exp_obd, get_real_obd)(exp, name, len);
1396 }
1397
1398 static inline int md_valid_attrs(struct obd_export *exp, struct ll_fid *fid)
1399 {
1400         ENTRY;
1401         EXP_CHECK_MD_OP(exp, valid_attrs);
1402         MD_COUNTER_INCREMENT(exp->exp_obd, valid_attrs);
1403         return MDP(exp->exp_obd, valid_attrs)(exp, fid);
1404 }
1405
1406 static inline int md_req2lustre_md(struct obd_export *exp,
1407                                    struct ptlrpc_request *req,
1408                                    unsigned int offset,
1409                                    struct obd_export *osc_exp,
1410                                    struct lustre_md *md)
1411 {
1412         ENTRY;
1413         EXP_CHECK_MD_OP(exp, req2lustre_md);
1414         MD_COUNTER_INCREMENT(exp->exp_obd, req2lustre_md);
1415         return MDP(exp->exp_obd, req2lustre_md)(exp, req, offset, osc_exp, md);
1416 }
1417
1418 static inline int md_set_open_replay_data(struct obd_export *exp,
1419                                           struct obd_client_handle *och,
1420                                           struct ptlrpc_request *open_req)
1421 {
1422         ENTRY;
1423         EXP_CHECK_MD_OP(exp, set_open_replay_data);
1424         MD_COUNTER_INCREMENT(exp->exp_obd, set_open_replay_data);
1425         return MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req);
1426 }
1427
1428 static inline int md_clear_open_replay_data(struct obd_export *exp,
1429                                             struct obd_client_handle *och)
1430 {
1431         ENTRY;
1432         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
1433         MD_COUNTER_INCREMENT(exp->exp_obd, clear_open_replay_data);
1434         return MDP(exp->exp_obd, clear_open_replay_data)(exp, och);
1435 }
1436
1437 static inline int md_store_inode_generation(struct obd_export *exp,
1438                                             struct ptlrpc_request *req,
1439                                             int reqoff, int repoff)
1440 {
1441         ENTRY;
1442         EXP_CHECK_MD_OP(exp, store_inode_generation);
1443         MD_COUNTER_INCREMENT(exp->exp_obd, store_inode_generation);
1444         return MDP(exp->exp_obd, store_inode_generation)(exp, req,
1445                    reqoff, repoff);
1446 }
1447
1448 static inline int md_set_lock_data(struct obd_export *exp, __u64 *l, void *data)
1449 {
1450         ENTRY;
1451         EXP_CHECK_MD_OP(exp, set_lock_data);
1452         MD_COUNTER_INCREMENT(exp->exp_obd, set_lock_data);
1453         return MDP(exp->exp_obd, set_lock_data)(exp, l, data);
1454 }
1455
1456 /* OBD Metadata Support */
1457
1458 extern int obd_init_caches(void);
1459 extern void obd_cleanup_caches(void);
1460
1461 /* support routines */
1462 extern kmem_cache_t *obdo_cachep;
1463 static inline struct obdo *obdo_alloc(void)
1464 {
1465         struct obdo *oa;
1466
1467         oa = kmem_cache_alloc(obdo_cachep, SLAB_KERNEL);
1468         if (oa == NULL)
1469                 LBUG();
1470         CDEBUG(D_MALLOC, "kmem_cache_alloced oa at %p\n", oa);
1471         memset(oa, 0, sizeof (*oa));
1472
1473         return oa;
1474 }
1475
1476 static inline void obdo_free(struct obdo *oa)
1477 {
1478         if (!oa)
1479                 return;
1480         CDEBUG(D_MALLOC, "kmem_cache_freed oa at %p\n", oa);
1481         kmem_cache_free(obdo_cachep, oa);
1482 }
1483
1484 #if !defined(__KERNEL__) || (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
1485 #define to_kdev_t(dev) dev
1486 #define kdev_t_to_nr(dev) dev
1487 #endif
1488
1489 /* I'm as embarrassed about this as you are.
1490  *
1491  * <shaver> // XXX do not look into _superhack with remaining eye
1492  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
1493 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
1494 extern void (*ptlrpc_abort_inflight_superhack)(struct obd_import *imp);
1495
1496 /* sysctl.c */
1497 extern void obd_sysctl_init (void);
1498 extern void obd_sysctl_clean (void);
1499
1500 /* uuid.c  */
1501 typedef __u8 class_uuid_t[16];
1502 //int class_uuid_parse(struct obd_uuid in, class_uuid_t out);
1503 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
1504
1505 /* lustre_peer.c    */
1506 int lustre_uuid_to_peer(char *uuid, __u32 *peer_nal, ptl_nid_t *peer_nid);
1507 int class_add_uuid(char *uuid, __u64 nid, __u32 nal);
1508 int class_del_uuid (char *uuid);
1509 void class_init_uuidlist(void);
1510 void class_exit_uuidlist(void);
1511
1512 /* mea.c */
1513 int mea_name2idx(struct mea *mea, char *name, int namelen);
1514 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
1515
1516 #endif /* __LINUX_OBD_CLASS_H */