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_lov;
 104         char *lp_lmv;
 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
 145 void __class_export_put(struct obd_export *);
 146 struct obd_export *class_new_export(struct obd_device *obddev);
 147 void class_unlink_export(struct obd_export *exp);
 148
 149 struct obd_import *class_import_get(struct obd_import *);
 150 void class_import_put(struct obd_import *);
 151 struct obd_import *class_new_import(void);
 152 void class_destroy_import(struct obd_import *exp);
 153
 154 struct obd_type *class_get_type(char *name);
 155 void class_put_type(struct obd_type *type);
 156 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 157                   struct obd_uuid *cluuid);
 158 int class_disconnect(struct obd_export *exp, int flags);
 159 void class_disconnect_exports(struct obd_device *obddev, int flags);
 160 void class_disconnect_stale_exports(struct obd_device *obddev, int flags);
 161
 162 /* generic operations shared by various OBD types */
 163 int class_multi_setup(struct obd_device *obddev, uint32_t len, void *data);
 164 int class_multi_cleanup(struct obd_device *obddev);
 165
 166 /* obdo.c */
 167 #ifdef __KERNEL__
 168 void obdo_from_iattr(struct obdo *oa, struct iattr *attr, unsigned ia_valid);
 169 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, obd_flag valid);
 170 void obdo_from_inode(struct obdo *dst, struct inode *src, obd_flag valid);
 171 void obdo_refresh_inode(struct inode *dst, struct obdo *src, obd_flag valid);
 172 void obdo_to_inode(struct inode *dst, struct obdo *src, obd_flag valid);
 173 #endif
 174 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_flag valid);
 175 int obdo_cmp_md(struct obdo *dst, struct obdo *src, obd_flag compare);
 176 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
 177
 178 static inline int obd_check_conn(struct lustre_handle *conn)
 179 {
 180         struct obd_device *obd;
 181         if (!conn) {
 182                 CERROR("NULL conn\n");
 183                 RETURN(-ENOTCONN);
 184         }
 185
 186         obd = class_conn2obd(conn);
 187         if (!obd) {
 188                 CERROR("NULL obd\n");
 189                 RETURN(-ENODEV);
 190         }
 191
 192         if (!obd->obd_attached) {
 193                 CERROR("obd %d not attached\n", obd->obd_minor);
 194                 RETURN(-ENODEV);
 195         }
 196
 197         if (!obd->obd_set_up) {
 198                 CERROR("obd %d not setup\n", obd->obd_minor);
 199                 RETURN(-ENODEV);
 200         }
 201
 202         if (!obd->obd_type) {
 203                 CERROR("obd %d not typed\n", obd->obd_minor);
 204                 RETURN(-ENODEV);
 205         }
 206
 207         if (!obd->obd_type->typ_ops) {
 208                 CERROR("obd_check_conn: obd %d no operations\n",
 209                        obd->obd_minor);
 210                 RETURN(-EOPNOTSUPP);
 211         }
 212         return 0;
 213 }
 214
 215
 216 #define OBT(dev)        (dev)->obd_type
 217 #define OBP(dev, op)    (dev)->obd_type->typ_ops->o_ ## op
 218 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
 219 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 220
 221 /* Ensure obd_setup: used for disconnect which might be called while
 222    an obd is stopping. */
 223 #define OBD_CHECK_SETUP(conn, exp)                                      \
 224 do {                                                                    \
 225         if (!(conn)) {                                                  \
 226                 CERROR("NULL connection\n");                            \
 227                 RETURN(-EINVAL);                                        \
 228         }                                                               \
 229                                                                         \
 230         exp = class_conn2export(conn);                                  \
 231         if (!(exp)) {                                                   \
 232                 CERROR("No export for conn "LPX64"\n", (conn)->cookie); \
 233                 RETURN(-EINVAL);                                        \
 234         }                                                               \
 235                                                                         \
 236         if (!(exp)->exp_obd->obd_set_up) {                              \
 237                 CERROR("Device %d not setup\n",                         \
 238                        (exp)->exp_obd->obd_minor);                      \
 239                 class_export_put(exp);                                  \
 240                 RETURN(-EINVAL);                                        \
 241         }                                                               \
 242 } while (0)
 243
 244 /* Ensure obd_setup and !obd_stopping. */
 245 #define OBD_CHECK_ACTIVE(conn, exp)                                     \
 246 do {                                                                    \
 247         if (!(conn)) {                                                  \
 248                 CERROR("NULL connection\n");                            \
 249                 RETURN(-EINVAL);                                        \
 250         }                                                               \
 251                                                                         \
 252         exp = class_conn2export(conn);                                  \
 253         if (!(exp)) {                                                   \
 254                 CERROR("No export for conn "LPX64"\n", (conn)->cookie); \
 255                 RETURN(-EINVAL);                                        \
 256         }                                                               \
 257                                                                         \
 258         if (!(exp)->exp_obd->obd_set_up || (exp)->exp_obd->obd_stopping) { \
 259                 CERROR("Device %d not setup\n",                         \
 260                        (exp)->exp_obd->obd_minor);                      \
 261                 class_export_put(exp);                                  \
 262                 RETURN(-EINVAL);                                        \
 263         }                                                               \
 264 } while (0)
 265
 266 /* Ensure obd_setup: used for cleanup which must be called
 267    while obd is stopping */
 268 #define OBD_CHECK_DEV_STOPPING(obd)                             \
 269 do {                                                            \
 270         if (!(obd)) {                                           \
 271                 CERROR("NULL device\n");                        \
 272                 RETURN(-ENODEV);                                \
 273         }                                                       \
 274                                                                 \
 275         if (!(obd)->obd_set_up) {                               \
 276                 CERROR("Device %d not setup\n",                 \
 277                        (obd)->obd_minor);                       \
 278                 RETURN(-ENODEV);                                \
 279         }                                                       \
 280                                                                 \
 281         if (!(obd)->obd_stopping) {                             \
 282                 CERROR("Device %d not stopping\n",              \
 283                        (obd)->obd_minor);                       \
 284                 RETURN(-ENODEV);                                \
 285         }                                                       \
 286 } while (0)
 287
 288 /* ensure obd_setup and !obd_stopping */
 289 #define OBD_CHECK_DEV_ACTIVE(obd)                               \
 290 do {                                                            \
 291         if (!(obd)) {                                           \
 292                 CERROR("NULL device\n");                        \
 293                 RETURN(-ENODEV);                                \
 294         }                                                       \
 295                                                                 \
 296         if (!(obd)->obd_set_up || (obd)->obd_stopping) {        \
 297                 CERROR("Device %d not setup\n",                 \
 298                        (obd)->obd_minor);                       \
 299                 RETURN(-ENODEV);                                \
 300         }                                                       \
 301 } while (0)
 302
 303
 304 #ifdef LPROCFS
 305 #define OBD_COUNTER_OFFSET(op)                                  \
 306         ((offsetof(struct obd_ops, o_ ## op) -                  \
 307           offsetof(struct obd_ops, o_iocontrol))                \
 308          / sizeof(((struct obd_ops *)(0))->o_iocontrol))
 309
 310 #define OBD_COUNTER_INCREMENT(obd, op)                          \
 311         if ((obd)->obd_stats != NULL) {                         \
 312                 unsigned int coffset;                           \
 313                 coffset = (unsigned int)(obd)->obd_cntr_base +  \
 314                         OBD_COUNTER_OFFSET(op);                 \
 315                 LASSERT(coffset < obd->obd_stats->ls_num);      \
 316                 lprocfs_counter_incr(obd->obd_stats, coffset);  \
 317         }
 318 /* FIXME: real accounting here */
 319 #define MD_COUNTER_INCREMENT(obd, op)
 320 #else
 321 #define OBD_COUNTER_OFFSET(op)
 322 #define OBD_COUNTER_INCREMENT(obd, op)
 323 #define MD_COUNTER_INCREMENT(obd, op)
 324 #endif
 325
 326 #define OBD_CHECK_MD_OP(obd, op, err)                           \
 327 do {                                                            \
 328         if (!OBT(obd) || !MDP((obd), op)) {\
 329                 if (err)                                        \
 330                         CERROR("obd_md" #op ": dev %d no operation\n",    \
 331                                obd->obd_minor);                 \
 332                 RETURN(err);                                    \
 333         }                                                       \
 334 } while (0)
 335
 336 #define EXP_CHECK_MD_OP(exp, op)                                \
 337 do {                                                            \
 338         if ((exp) == NULL) {                                    \
 339                 CERROR("obd_" #op ": NULL export\n");           \
 340                 portals_debug_dumplog();                        \
 341                 RETURN(-ENODEV);                                \
 342         }                                                       \
 343         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 344                 CERROR("obd_" #op ": cleaned up obd\n");        \
 345                 RETURN(-EOPNOTSUPP);                            \
 346         }                                                       \
 347         if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
 348                 CERROR("obd_" #op ": dev %d no operation\n",    \
 349                        (exp)->exp_obd->obd_minor);              \
 350                 RETURN(-EOPNOTSUPP);                            \
 351         }                                                       \
 352 } while (0)
 353
 354 #define OBD_CHECK_OP(obd, op, err)                              \
 355 do {                                                            \
 356         if (!OBT(obd) || !OBP((obd), op)) {\
 357                 if (err)                                        \
 358                         CERROR("obd_" #op ": dev %d no operation\n",    \
 359                                obd->obd_minor);                         \
 360                 RETURN(err);                                    \
 361         }                                                       \
 362 } while (0)
 363
 364 #define EXP_CHECK_OP(exp, op)                                   \
 365 do {                                                            \
 366         if ((exp) == NULL) {                                    \
 367                 CERROR("obd_" #op ": NULL export\n");           \
 368                 portals_debug_dumplog();                        \
 369                 RETURN(-ENODEV);                                \
 370         }                                                       \
 371         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 372                 CERROR("obd_" #op ": cleaned up obd\n");        \
 373                 RETURN(-EOPNOTSUPP);                            \
 374         }                                                       \
 375         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 376                 CERROR("obd_" #op ": dev %d no operation\n",    \
 377                        (exp)->exp_obd->obd_minor);              \
 378                 RETURN(-EOPNOTSUPP);                            \
 379         }                                                       \
 380 } while (0)
 381
 382 #define CTXT_CHECK_OP(ctxt, op, err)                                         \
 383 do {                                                            \
 384         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {                     \
 385                 if (err)                                        \
 386                         CERROR("lop_" #op ": dev %d no operation\n",    \
 387                                ctxt->loc_obd->obd_minor);                         \
 388                 RETURN(err);                                    \
 389         }                                                       \
 390 } while (0)
 391
 392 static inline int obd_get_info(struct obd_export *exp, __u32 keylen,
 393                                void *key, __u32 *vallen, void *val)
 394 {
 395         int rc;
 396         ENTRY;
 397
 398         EXP_CHECK_OP(exp, get_info);
 399         OBD_COUNTER_INCREMENT(exp->exp_obd, get_info);
 400
 401         rc = OBP(exp->exp_obd, get_info)(exp, keylen, key, vallen, val);
 402         RETURN(rc);
 403 }
 404
 405 static inline int obd_set_info(struct obd_export *exp, obd_count keylen,
 406                                void *key, obd_count vallen, void *val)
 407 {
 408         int rc;
 409         ENTRY;
 410
 411         EXP_CHECK_OP(exp, set_info);
 412         OBD_COUNTER_INCREMENT(exp->exp_obd, set_info);
 413
 414         rc = OBP(exp->exp_obd, set_info)(exp, keylen, key, vallen, val);
 415         RETURN(rc);
 416 }
 417
 418 static inline int obd_setup(struct obd_device *obd, int datalen, void *data)
 419 {
 420         int rc;
 421         ENTRY;
 422
 423         OBD_CHECK_OP(obd, setup, -EOPNOTSUPP);
 424         OBD_COUNTER_INCREMENT(obd, setup);
 425
 426         rc = OBP(obd, setup)(obd, datalen, data);
 427         RETURN(rc);
 428 }
 429
 430 static inline int obd_precleanup(struct obd_device *obd, int flags)
 431 {
 432         int rc;
 433         ENTRY;
 434
 435         OBD_CHECK_OP(obd, precleanup, 0);
 436         OBD_COUNTER_INCREMENT(obd, precleanup);
 437
 438         rc = OBP(obd, precleanup)(obd, flags);
 439         RETURN(rc);
 440 }
 441
 442 static inline int obd_cleanup(struct obd_device *obd, int flags)
 443 {
 444         int rc;
 445         ENTRY;
 446
 447         OBD_CHECK_DEV_STOPPING(obd);
 448         OBD_CHECK_OP(obd, cleanup, 0);
 449         OBD_COUNTER_INCREMENT(obd, cleanup);
 450
 451         rc = OBP(obd, cleanup)(obd, flags);
 452         RETURN(rc);
 453 }
 454
 455 static inline int
 456 obd_process_config(struct obd_device *obd, int datalen, void *data)
 457 {
 458         int rc;
 459         ENTRY;
 460
 461         OBD_CHECK_OP(obd, process_config, -EOPNOTSUPP);
 462         OBD_COUNTER_INCREMENT(obd, process_config);
 463
 464         rc = OBP(obd, process_config)(obd, datalen, data);
 465         RETURN(rc);
 466 }
 467
 468 /* Pack an in-memory MD struct for storage on disk.
 469  * Returns +ve size of packed MD (0 for free), or -ve error.
 470  *
 471  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 472  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 473  * If @*disk_tgt == NULL, it will be allocated
 474  */
 475 static inline int obd_packmd(struct obd_export *exp,
 476                              struct lov_mds_md **disk_tgt,
 477                              struct lov_stripe_md *mem_src)
 478 {
 479         int rc;
 480         ENTRY;
 481
 482         EXP_CHECK_OP(exp, packmd);
 483         OBD_COUNTER_INCREMENT(exp->exp_obd, packmd);
 484
 485         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 486         RETURN(rc);
 487 }
 488
 489 static inline int obd_size_diskmd(struct obd_export *exp,
 490                                   struct lov_stripe_md *mem_src)
 491 {
 492         return obd_packmd(exp, NULL, mem_src);
 493 }
 494
 495 /* helper functions */
 496 static inline int obd_alloc_diskmd(struct obd_export *exp,
 497                                    struct lov_mds_md **disk_tgt)
 498 {
 499         LASSERT(disk_tgt);
 500         LASSERT(*disk_tgt == NULL);
 501         return obd_packmd(exp, disk_tgt, NULL);
 502 }
 503
 504 static inline int obd_free_diskmd(struct obd_export *exp,
 505                                   struct lov_mds_md **disk_tgt)
 506 {
 507         LASSERT(disk_tgt);
 508         LASSERT(*disk_tgt);
 509         return obd_packmd(exp, disk_tgt, NULL);
 510 }
 511
 512 /* Unpack an MD struct from disk to in-memory format.
 513  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 514  *
 515  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 516  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 517  * If @*mem_tgt == NULL, it will be allocated
 518  */
 519 static inline int obd_unpackmd(struct obd_export *exp,
 520                                struct lov_stripe_md **mem_tgt,
 521                                struct lov_mds_md *disk_src,
 522                                int disk_len)
 523 {
 524         int rc;
 525         ENTRY;
 526
 527         EXP_CHECK_OP(exp, unpackmd);
 528         OBD_COUNTER_INCREMENT(exp->exp_obd, unpackmd);
 529
 530         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 531         RETURN(rc);
 532 }
 533
 534 /* helper functions */
 535 static inline int obd_alloc_memmd(struct obd_export *exp,
 536                                   struct lov_stripe_md **mem_tgt)
 537 {
 538         LASSERT(mem_tgt);
 539         LASSERT(*mem_tgt == NULL);
 540         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 541 }
 542
 543 static inline int obd_free_memmd(struct obd_export *exp,
 544                                  struct lov_stripe_md **mem_tgt)
 545 {
 546         LASSERT(mem_tgt);
 547         LASSERT(*mem_tgt);
 548         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 549 }
 550
 551 static inline int obd_revalidate_md(struct obd_export *exp, struct obdo *obdo,
 552                                     struct lov_stripe_md *ea,
 553                                     struct obd_trans_info *oti)
 554 {
 555         int rc;
 556         ENTRY;
 557
 558         EXP_CHECK_OP(exp, revalidate_md);
 559         OBD_COUNTER_INCREMENT(exp->exp_obd, revalidate_md);
 560
 561         rc = OBP(exp->exp_obd, revalidate_md)(exp, obdo, ea, oti);
 562         RETURN(rc);
 563 }
 564
 565 static inline int obd_create(struct obd_export *exp, struct obdo *obdo,
 566                              struct lov_stripe_md **ea,
 567                              struct obd_trans_info *oti)
 568 {
 569         int rc;
 570         ENTRY;
 571
 572         EXP_CHECK_OP(exp, create);
 573         OBD_COUNTER_INCREMENT(exp->exp_obd, create);
 574
 575         rc = OBP(exp->exp_obd, create)(exp, obdo, ea, oti);
 576         RETURN(rc);
 577 }
 578
 579 static inline int obd_destroy(struct obd_export *exp, struct obdo *obdo,
 580                               struct lov_stripe_md *ea,
 581                               struct obd_trans_info *oti)
 582 {
 583         int rc;
 584         ENTRY;
 585
 586         EXP_CHECK_OP(exp, destroy);
 587         OBD_COUNTER_INCREMENT(exp->exp_obd, destroy);
 588
 589         rc = OBP(exp->exp_obd, destroy)(exp, obdo, ea, oti);
 590         RETURN(rc);
 591 }
 592
 593 static inline int obd_getattr(struct obd_export *exp, struct obdo *obdo,
 594                               struct lov_stripe_md *ea)
 595 {
 596         int rc;
 597         ENTRY;
 598
 599         EXP_CHECK_OP(exp, getattr);
 600         OBD_COUNTER_INCREMENT(exp->exp_obd, getattr);
 601
 602         rc = OBP(exp->exp_obd, getattr)(exp, obdo, ea);
 603         RETURN(rc);
 604 }
 605
 606 static inline int obd_getattr_async(struct obd_export *exp,
 607                                     struct obdo *obdo, struct lov_stripe_md *ea,
 608                                     struct ptlrpc_request_set *set)
 609 {
 610         int rc;
 611         ENTRY;
 612
 613         EXP_CHECK_OP(exp, getattr);
 614         OBD_COUNTER_INCREMENT(exp->exp_obd, getattr);
 615
 616         rc = OBP(exp->exp_obd, getattr_async)(exp, obdo, ea, set);
 617         RETURN(rc);
 618 }
 619
 620 static inline int obd_setattr(struct obd_export *exp, struct obdo *obdo,
 621                               struct lov_stripe_md *ea,
 622                               struct obd_trans_info *oti)
 623 {
 624         int rc;
 625         ENTRY;
 626
 627         EXP_CHECK_OP(exp, setattr);
 628         OBD_COUNTER_INCREMENT(exp->exp_obd, setattr);
 629
 630         rc = OBP(exp->exp_obd, setattr)(exp, obdo, ea, oti);
 631         RETURN(rc);
 632 }
 633 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 634                                int priority)
 635 {
 636         struct obd_device *obd = imp->imp_obd;
 637         int rc;
 638         ENTRY;
 639
 640         OBD_CHECK_DEV_ACTIVE(obd);
 641         OBD_CHECK_OP(obd, add_conn, -EOPNOTSUPP);
 642         OBD_COUNTER_INCREMENT(obd, add_conn);
 643
 644         rc = OBP(obd, add_conn)(imp, uuid, priority);
 645         RETURN(rc);
 646 }
 647
 648 static inline int obd_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
 649 {
 650         struct obd_device *obd = imp->imp_obd;
 651         int rc;
 652         ENTRY;
 653
 654         OBD_CHECK_DEV_ACTIVE(obd);
 655         OBD_CHECK_OP(obd, del_conn, -EOPNOTSUPP);
 656         OBD_COUNTER_INCREMENT(obd, del_conn);
 657
 658         rc = OBP(obd, del_conn)(imp, uuid);
 659         RETURN(rc);
 660 }
 661
 662
 663 static inline int obd_connect(struct lustre_handle *conn,
 664                               struct obd_device *obd, struct obd_uuid *cluuid,
 665                               unsigned long connect_flags)
 666 {
 667         int rc;
 668         ENTRY;
 669
 670         OBD_CHECK_DEV_ACTIVE(obd);
 671         OBD_CHECK_OP(obd, connect, -EOPNOTSUPP);
 672         OBD_COUNTER_INCREMENT(obd, connect);
 673
 674         rc = OBP(obd, connect)(conn, obd, cluuid, connect_flags);
 675         RETURN(rc);
 676 }
 677
 678 static inline int obd_connect_post(struct obd_export *exp)
 679 {
 680         int rc;
 681         ENTRY;
 682
 683         OBD_CHECK_DEV_ACTIVE(exp->exp_obd);
 684         if (!OBT(exp->exp_obd) || !OBP((exp->exp_obd), connect_post))
 685                 RETURN(0);
 686         OBD_COUNTER_INCREMENT(exp->exp_obd, connect_post);
 687         rc = OBP(exp->exp_obd, connect_post)(exp);
 688         RETURN(rc);
 689 }
 690
 691 static inline int obd_disconnect(struct obd_export *exp, int flags)
 692 {
 693         int rc;
 694         ENTRY;
 695
 696         EXP_CHECK_OP(exp, disconnect);
 697         OBD_COUNTER_INCREMENT(exp->exp_obd, disconnect);
 698
 699         rc = OBP(exp->exp_obd, disconnect)(exp, flags);
 700         RETURN(rc);
 701 }
 702
 703 static inline int obd_getready(struct obd_export *exp)
 704 {
 705         int rc;
 706         ENTRY;
 707
 708         if (!OBP(exp->exp_obd, getready))
 709                 RETURN(0);
 710         rc = OBP(exp->exp_obd, getready)(exp);
 711         RETURN(rc);
 712 }
 713
 714 static inline int obd_init_export(struct obd_export *exp)
 715 {
 716         int rc = 0;
 717
 718         ENTRY;
 719         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 720             OBP((exp)->exp_obd, init_export))
 721                 rc = OBP(exp->exp_obd, init_export)(exp);
 722         RETURN(rc);
 723 }
 724
 725 static inline int obd_destroy_export(struct obd_export *exp)
 726 {
 727         ENTRY;
 728         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 729             OBP((exp)->exp_obd, destroy_export))
 730                 OBP(exp->exp_obd, destroy_export)(exp);
 731         RETURN(0);
 732 }
 733
 734 static inline struct dentry *
 735 obd_lvfs_id2dentry(struct obd_export *exp, __u64 ino,
 736                    __u32 gen, __u64 gr)
 737 {
 738         LASSERT(exp->exp_obd);
 739
 740         return lvfs_id2dentry(&exp->exp_obd->obd_lvfs_ctxt,
 741                               ino, gen, gr, exp->exp_obd);
 742 }
 743
 744 #ifndef time_before
 745 #define time_before(t1, t2) ((long)t2 - (long)t1 > 0)
 746 #endif
 747
 748 /* @max_age is the oldest time in jiffies that we accept using a cached data.
 749  * If the cache is older than @max_age we will get a new value from the
 750  * target.  Use a value of "jiffies + HZ" to guarantee freshness. */
 751 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
 752                              unsigned long max_age)
 753 {
 754         int rc = 0;
 755         ENTRY;
 756
 757         if (obd == NULL)
 758                 RETURN(-EINVAL);
 759
 760         OBD_CHECK_OP(obd, statfs, -EOPNOTSUPP);
 761         OBD_COUNTER_INCREMENT(obd, statfs);
 762
 763         CDEBUG(D_SUPER, "osfs %lu, max_age %lu\n", obd->obd_osfs_age, max_age);
 764         if (time_before(obd->obd_osfs_age, max_age)) {
 765                 rc = OBP(obd, statfs)(obd, osfs, max_age);
 766                 if (rc == 0) {
 767                         spin_lock(&obd->obd_osfs_lock);
 768                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
 769                         obd->obd_osfs_age = jiffies;
 770                         spin_unlock(&obd->obd_osfs_lock);
 771                 }
 772         } else {
 773                 CDEBUG(D_SUPER, "using cached obd_statfs data\n");
 774                 spin_lock(&obd->obd_osfs_lock);
 775                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
 776                 spin_unlock(&obd->obd_osfs_lock);
 777         }
 778         RETURN(rc);
 779 }
 780
 781 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
 782                            struct lov_stripe_md *ea, obd_size start,
 783                            obd_size end)
 784 {
 785         int rc;
 786         ENTRY;
 787
 788         OBD_CHECK_OP(exp->exp_obd, sync, -EOPNOTSUPP);
 789         OBD_COUNTER_INCREMENT(exp->exp_obd, sync);
 790
 791         rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end);
 792         RETURN(rc);
 793 }
 794
 795 static inline int obd_punch(struct obd_export *exp, struct obdo *oa,
 796                             struct lov_stripe_md *ea, obd_size start,
 797                             obd_size end, struct obd_trans_info *oti)
 798 {
 799         int rc;
 800         ENTRY;
 801
 802         EXP_CHECK_OP(exp, punch);
 803         OBD_COUNTER_INCREMENT(exp->exp_obd, punch);
 804
 805         rc = OBP(exp->exp_obd, punch)(exp, oa, ea, start, end, oti);
 806         RETURN(rc);
 807 }
 808
 809 static inline int obd_brw(int cmd, struct obd_export *exp, struct obdo *oa,
 810                           struct lov_stripe_md *ea, obd_count oa_bufs,
 811                           struct brw_page *pg, struct obd_trans_info *oti)
 812 {
 813         int rc;
 814         ENTRY;
 815
 816         EXP_CHECK_OP(exp, brw);
 817         OBD_COUNTER_INCREMENT(exp->exp_obd, brw);
 818
 819         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
 820                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
 821                        "or OBD_BRW_CHECK\n");
 822                 LBUG();
 823         }
 824
 825         rc = OBP(exp->exp_obd, brw)(cmd, exp, oa, ea, oa_bufs, pg, oti);
 826         RETURN(rc);
 827 }
 828
 829 static inline int obd_brw_async(int cmd, struct obd_export *exp,
 830                                 struct obdo *oa, struct lov_stripe_md *ea,
 831                                 obd_count oa_bufs, struct brw_page *pg,
 832                                 struct ptlrpc_request_set *set,
 833                                 struct obd_trans_info *oti)
 834 {
 835         int rc;
 836         ENTRY;
 837
 838         EXP_CHECK_OP(exp, brw_async);
 839         OBD_COUNTER_INCREMENT(exp->exp_obd, brw_async);
 840
 841         if (!(cmd & OBD_BRW_RWMASK)) {
 842                 CERROR("obd_brw: cmd must be OBD_BRW_READ or OBD_BRW_WRITE\n");
 843                 LBUG();
 844         }
 845
 846         rc = OBP(exp->exp_obd, brw_async)(cmd, exp, oa, ea, oa_bufs, pg, set,
 847                                           oti);
 848         RETURN(rc);
 849 }
 850
 851 static inline  int obd_prep_async_page(struct obd_export *exp,
 852                                        struct lov_stripe_md *lsm,
 853                                        struct lov_oinfo *loi,
 854                                        struct page *page, obd_off offset,
 855                                        struct obd_async_page_ops *ops,
 856                                        void *data, void **res)
 857 {
 858         int ret;
 859         ENTRY;
 860
 861         OBD_CHECK_OP(exp->exp_obd, prep_async_page, -EOPNOTSUPP);
 862         OBD_COUNTER_INCREMENT(exp->exp_obd, prep_async_page);
 863
 864         ret = OBP(exp->exp_obd, prep_async_page)(exp, lsm, loi, page, offset,
 865                                                  ops, data, res);
 866         RETURN(ret);
 867 }
 868
 869 static inline int obd_queue_async_io(struct obd_export *exp,
 870                                      struct lov_stripe_md *lsm,
 871                                      struct lov_oinfo *loi, void *cookie,
 872                                      int cmd, obd_off off, int count,
 873                                      obd_flag brw_flags, obd_flag async_flags)
 874 {
 875         int rc;
 876         ENTRY;
 877
 878         OBD_CHECK_OP(exp->exp_obd, queue_async_io, -EOPNOTSUPP);
 879         OBD_COUNTER_INCREMENT(exp->exp_obd, queue_async_io);
 880         LASSERT(cmd & OBD_BRW_RWMASK);
 881
 882         rc = OBP(exp->exp_obd, queue_async_io)(exp, lsm, loi, cookie, cmd, off,
 883                                                count, brw_flags, async_flags);
 884         RETURN(rc);
 885 }
 886
 887 static inline int obd_set_async_flags(struct obd_export *exp,
 888                                       struct lov_stripe_md *lsm,
 889                                       struct lov_oinfo *loi, void *cookie,
 890                                       obd_flag async_flags)
 891 {
 892         int rc;
 893         ENTRY;
 894
 895         OBD_CHECK_OP(exp->exp_obd, set_async_flags, -EOPNOTSUPP);
 896         OBD_COUNTER_INCREMENT(exp->exp_obd, set_async_flags);
 897
 898         rc = OBP(exp->exp_obd, set_async_flags)(exp, lsm, loi, cookie,
 899                                                 async_flags);
 900         RETURN(rc);
 901 }
 902
 903 static inline int obd_queue_group_io(struct obd_export *exp,
 904                                      struct lov_stripe_md *lsm,
 905                                      struct lov_oinfo *loi,
 906                                      struct obd_io_group *oig,
 907                                      void *cookie, int cmd, obd_off off,
 908                                      int count, obd_flag brw_flags,
 909                                      obd_flag async_flags)
 910 {
 911         int rc;
 912         ENTRY;
 913
 914         OBD_CHECK_OP(exp->exp_obd, queue_group_io, -EOPNOTSUPP);
 915         OBD_COUNTER_INCREMENT(exp->exp_obd, queue_group_io);
 916         LASSERT(cmd & OBD_BRW_RWMASK);
 917
 918         rc = OBP(exp->exp_obd, queue_group_io)(exp, lsm, loi, oig, cookie,
 919                                                cmd, off, count, brw_flags,
 920                                                async_flags);
 921         RETURN(rc);
 922 }
 923
 924 static inline int obd_trigger_group_io(struct obd_export *exp,
 925                                        struct lov_stripe_md *lsm,
 926                                        struct lov_oinfo *loi,
 927                                        struct obd_io_group *oig)
 928 {
 929         int rc;
 930         ENTRY;
 931
 932         OBD_CHECK_OP(exp->exp_obd, trigger_group_io, -EOPNOTSUPP);
 933         OBD_COUNTER_INCREMENT(exp->exp_obd, trigger_group_io);
 934
 935         rc = OBP(exp->exp_obd, trigger_group_io)(exp, lsm, loi, oig);
 936         RETURN(rc);
 937 }
 938
 939 static inline int obd_teardown_async_page(struct obd_export *exp,
 940                                           struct lov_stripe_md *lsm,
 941                                           struct lov_oinfo *loi, void *cookie)
 942 {
 943         int rc;
 944         ENTRY;
 945
 946         OBD_CHECK_OP(exp->exp_obd, teardown_async_page, -EOPNOTSUPP);
 947         OBD_COUNTER_INCREMENT(exp->exp_obd, teardown_async_page);
 948
 949         rc = OBP(exp->exp_obd, teardown_async_page)(exp, lsm, loi, cookie);
 950         RETURN(rc);
 951 }
 952
 953 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
 954                              int objcount, struct obd_ioobj *obj,
 955                              int niocount, struct niobuf_remote *remote,
 956                              struct niobuf_local *local,
 957                              struct obd_trans_info *oti)
 958 {
 959         int rc;
 960         ENTRY;
 961
 962         OBD_CHECK_OP(exp->exp_obd, preprw, -EOPNOTSUPP);
 963         OBD_COUNTER_INCREMENT(exp->exp_obd, preprw);
 964
 965         rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, niocount,
 966                                        remote, local, oti);
 967         RETURN(rc);
 968 }
 969
 970 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
 971                                int objcount, struct obd_ioobj *obj,
 972                                int niocount, struct niobuf_local *local,
 973                                struct obd_trans_info *oti, int rc)
 974 {
 975         ENTRY;
 976
 977         OBD_CHECK_OP(exp->exp_obd, commitrw, -EOPNOTSUPP);
 978         OBD_COUNTER_INCREMENT(exp->exp_obd, commitrw);
 979
 980         rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj, niocount,
 981                                          local, oti, rc);
 982         RETURN(rc);
 983 }
 984
 985 static inline int obd_do_cow(struct obd_export *exp, struct obd_ioobj *obj,
 986                             int objcount,struct niobuf_remote *rnb)
 987 {
 988         int rc;
 989         ENTRY;
 990
 991         /* there are cases when write_extents is not implemented. */
 992         if (!OBP(exp->exp_obd, do_cow))
 993                 RETURN(0);
 994
 995         OBD_COUNTER_INCREMENT(exp->exp_obd, do_cow);
 996
 997         rc = OBP(exp->exp_obd, do_cow)(exp, obj, objcount, rnb);
 998
 999         RETURN(rc);
1000 }
1001
1002 static inline int obd_write_extents(struct obd_export *exp,
1003                                     struct obd_ioobj *obj,
1004                                     int objcount, int niocount,
1005                                     struct niobuf_local *local,
1006                                     int rc)
1007 {
1008         ENTRY;
1009
1010         /* there are cases when write_extents is not implemented. */
1011         if (!OBP(exp->exp_obd, write_extents))
1012                 RETURN(0);
1013
1014         OBD_COUNTER_INCREMENT(exp->exp_obd, write_extents);
1015
1016         rc = OBP(exp->exp_obd, write_extents)(exp, obj, objcount, niocount,
1017                                               local, rc);
1018         RETURN(rc);
1019 }
1020
1021 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1022                                 int len, void *karg, void *uarg)
1023 {
1024         int rc;
1025         ENTRY;
1026
1027         EXP_CHECK_OP(exp, iocontrol);
1028         OBD_COUNTER_INCREMENT(exp->exp_obd, iocontrol);
1029
1030         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1031         RETURN(rc);
1032 }
1033
1034 static inline int obd_enqueue(struct obd_export *exp, struct lov_stripe_md *ea,
1035                               __u32 type, ldlm_policy_data_t *policy,
1036                               __u32 mode, int *flags, void *bl_cb, void *cp_cb,
1037                               void *gl_cb, void *data, __u32 lvb_len,
1038                               void *lvb_swabber, struct lustre_handle *lockh)
1039 {
1040         int rc;
1041         ENTRY;
1042
1043         EXP_CHECK_OP(exp, enqueue);
1044         OBD_COUNTER_INCREMENT(exp->exp_obd, enqueue);
1045
1046         rc = OBP(exp->exp_obd, enqueue)(exp, ea, type, policy, mode, flags,
1047                                         bl_cb, cp_cb, gl_cb, data, lvb_len,
1048                                         lvb_swabber, lockh);
1049         RETURN(rc);
1050 }
1051
1052 static inline int obd_match(struct obd_export *exp, struct lov_stripe_md *ea,
1053                             __u32 type, ldlm_policy_data_t *policy, __u32 mode,
1054                             int *flags, void *data, struct lustre_handle *lockh)
1055 {
1056         int rc;
1057         ENTRY;
1058
1059         EXP_CHECK_OP(exp, match);
1060         OBD_COUNTER_INCREMENT(exp->exp_obd, match);
1061
1062         rc = OBP(exp->exp_obd, match)(exp, ea, type, policy, mode, flags, data,
1063                                       lockh);
1064         RETURN(rc);
1065 }
1066
1067 static inline int obd_change_cbdata(struct obd_export *exp,
1068                                     struct lov_stripe_md *lsm,
1069                                     ldlm_iterator_t it, void *data)
1070 {
1071         int rc;
1072         ENTRY;
1073
1074         EXP_CHECK_OP(exp, change_cbdata);
1075         OBD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata);
1076
1077         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1078         RETURN(rc);
1079 }
1080
1081 static inline int obd_cancel(struct obd_export *exp,
1082                              struct lov_stripe_md *ea, __u32 mode,
1083                              struct lustre_handle *lockh)
1084 {
1085         int rc;
1086         ENTRY;
1087
1088         EXP_CHECK_OP(exp, cancel);
1089         OBD_COUNTER_INCREMENT(exp->exp_obd, cancel);
1090
1091         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1092         RETURN(rc);
1093 }
1094
1095 static inline int obd_cancel_unused(struct obd_export *exp,
1096                                     struct lov_stripe_md *ea, int flags,
1097                                     void *opaque)
1098 {
1099         int rc;
1100         ENTRY;
1101
1102         EXP_CHECK_OP(exp, cancel_unused);
1103         OBD_COUNTER_INCREMENT(exp->exp_obd, cancel_unused);
1104
1105         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1106         RETURN(rc);
1107 }
1108
1109
1110 static inline int obd_san_preprw(int cmd, struct obd_export *exp,
1111                                  struct obdo *oa,
1112                                  int objcount, struct obd_ioobj *obj,
1113                                  int niocount, struct niobuf_remote *remote)
1114 {
1115         int rc;
1116
1117         EXP_CHECK_OP(exp, preprw);
1118         OBD_COUNTER_INCREMENT(exp->exp_obd, preprw);
1119
1120         rc = OBP(exp->exp_obd, san_preprw)(cmd, exp, oa, objcount, obj,
1121                                            niocount, remote);
1122         class_export_put(exp);
1123         return(rc);
1124 }
1125
1126 static inline int obd_pin(struct obd_export *exp, obd_id ino, __u32 gen,
1127                           int type, struct obd_client_handle *handle, int flag)
1128 {
1129         int rc;
1130
1131         EXP_CHECK_OP(exp, pin);
1132         OBD_COUNTER_INCREMENT(exp->exp_obd, pin);
1133
1134         rc = OBP(exp->exp_obd, pin)(exp, ino, gen, type, handle, flag);
1135         return(rc);
1136 }
1137
1138 static inline int obd_unpin(struct obd_export *exp,
1139                             struct obd_client_handle *handle, int flag)
1140 {
1141         int rc;
1142
1143         EXP_CHECK_OP(exp, unpin);
1144         OBD_COUNTER_INCREMENT(exp->exp_obd, unpin);
1145
1146         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1147         return(rc);
1148 }
1149
1150
1151 static inline void obd_import_event(struct obd_device *obd,
1152                                     struct obd_import *imp,
1153                                     enum obd_import_event event)
1154 {
1155         if (obd->obd_set_up && OBP(obd, import_event)) {
1156                 OBD_COUNTER_INCREMENT(obd, import_event);
1157                 OBP(obd, import_event)(obd, imp, event);
1158         }
1159 }
1160
1161 static inline int obd_llog_connect(struct obd_export *exp,
1162                                         struct llogd_conn_body *body)
1163 {
1164         ENTRY;
1165         EXP_CHECK_OP(exp, llog_connect);
1166         return OBP(exp->exp_obd, llog_connect)(exp, body);
1167 }
1168
1169 static inline int obd_notify(struct obd_device *obd, struct obd_device *watched,
1170                              int active, void *data)
1171 {
1172         if (!obd->obd_set_up) {
1173                 CERROR("obd %s not set up\n", obd->obd_name);
1174                 return -EINVAL;
1175         }
1176
1177         if (!OBP(obd, notify)) {
1178                 CERROR("obd %s has no notify handler\n", obd->obd_name);
1179                 return -ENOSYS;
1180         }
1181
1182         OBD_COUNTER_INCREMENT(obd, notify);
1183         return OBP(obd, notify)(obd, watched, active, data);
1184 }
1185
1186 static inline int obd_register_observer(struct obd_device *obd,
1187                                         struct obd_device *observer)
1188 {
1189         ENTRY;
1190         if (obd->obd_observer && observer)
1191                 RETURN(-EALREADY);
1192         obd->obd_observer = observer;
1193         RETURN(0);
1194 }
1195
1196 static inline int obd_init_ea_size(struct obd_export *exp, int size, int size2)
1197 {
1198         int rc;
1199         ENTRY;
1200         LASSERT(OBP(exp->exp_obd, init_ea_size) != NULL);
1201         OBD_COUNTER_INCREMENT(exp->exp_obd, init_ea_size);
1202         rc = OBP(exp->exp_obd, init_ea_size)(exp, size, size2);
1203         RETURN(rc);
1204 }
1205
1206 static inline int md_getstatus(struct obd_export *exp, struct lustre_id *id)
1207 {
1208         int rc;
1209
1210         EXP_CHECK_MD_OP(exp, getstatus);
1211         MD_COUNTER_INCREMENT(exp->exp_obd, getstatus);
1212         rc = MDP(exp->exp_obd, getstatus)(exp, id);
1213         RETURN(rc);
1214 }
1215
1216 /* this function notifies MDC, that inode described by @id gets removed from
1217  * memory.*/
1218 static inline int md_delete_object(struct obd_export *exp,
1219                                    struct lustre_id *id)
1220 {
1221         int rc;
1222         ENTRY;
1223
1224         /* as this method only notifies MDC that inode gets deleted, we can
1225          * return zero if method is not implemented, this means, that OBD does
1226          * not need such a notification. */
1227         if (MDP(exp->exp_obd, delete_object) == NULL)
1228                 RETURN(0);
1229
1230         MD_COUNTER_INCREMENT(exp->exp_obd, delete_object);
1231         rc = MDP(exp->exp_obd, delete_object)(exp, id);
1232         RETURN(rc);
1233 }
1234
1235 static inline int md_getattr(struct obd_export *exp, struct lustre_id *id,
1236                              unsigned long valid, unsigned int ea_size,
1237                              struct ptlrpc_request **request)
1238 {
1239         int rc;
1240         ENTRY;
1241         EXP_CHECK_MD_OP(exp, getattr);
1242         MD_COUNTER_INCREMENT(exp->exp_obd, getattr);
1243         rc = MDP(exp->exp_obd, getattr)(exp, id, valid, ea_size, request);
1244         RETURN(rc);
1245 }
1246
1247 static inline int md_change_cbdata(struct obd_export *exp, struct lustre_id *id,
1248                                    ldlm_iterator_t it, void *data)
1249 {
1250         int rc;
1251         ENTRY;
1252         EXP_CHECK_MD_OP(exp, change_cbdata);
1253         MD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata);
1254         rc = MDP(exp->exp_obd, change_cbdata)(exp, id, it, data);
1255         RETURN(rc);
1256 }
1257
1258 static inline int md_change_cbdata_name(struct obd_export *exp,
1259                                         struct lustre_id *id, char *name,
1260                                         int namelen, struct lustre_id *id2,
1261                                         ldlm_iterator_t it, void *data)
1262 {
1263         int rc;
1264
1265         /* this seem to be needed only for lmv. */
1266         if (!MDP(exp->exp_obd, change_cbdata_name))
1267                 return 0;
1268
1269         ENTRY;
1270
1271         MD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata_name);
1272         rc = MDP(exp->exp_obd, change_cbdata_name)(exp, id, name, namelen,
1273                                                    id2, it, data);
1274         RETURN(rc);
1275 }
1276
1277 static inline int md_close(struct obd_export *exp, struct obdo *obdo,
1278                            struct obd_client_handle *och,
1279                            struct ptlrpc_request **request)
1280 {
1281         int rc;
1282         ENTRY;
1283         EXP_CHECK_MD_OP(exp, close);
1284         MD_COUNTER_INCREMENT(exp->exp_obd, close);
1285         rc = MDP(exp->exp_obd, close)(exp, obdo, och, request);
1286         RETURN(rc);
1287 }
1288
1289 static inline int md_create(struct obd_export *exp, struct mdc_op_data *op_data,
1290                             const void *data, int datalen, int mode,
1291                             __u32 uid, __u32 gid, __u64 rdev,
1292                             struct ptlrpc_request **request)
1293 {
1294         int rc;
1295         ENTRY;
1296         EXP_CHECK_MD_OP(exp, create);
1297         MD_COUNTER_INCREMENT(exp->exp_obd, create);
1298         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1299                                        uid, gid, rdev, request);
1300         RETURN(rc);
1301 }
1302
1303 static inline int md_done_writing(struct obd_export *exp, struct obdo *obdo)
1304 {
1305         int rc;
1306         ENTRY;
1307         EXP_CHECK_MD_OP(exp, done_writing);
1308         MD_COUNTER_INCREMENT(exp->exp_obd, done_writing);
1309         rc = MDP(exp->exp_obd, done_writing)(exp, obdo);
1310         RETURN(rc);
1311 }
1312
1313 static inline int md_enqueue(struct obd_export *exp, int lock_type,
1314                              struct lookup_intent *it, int lock_mode,
1315                              struct mdc_op_data *data,
1316                              struct lustre_handle *lockh,
1317                              void *lmm, int lmmsize,
1318                              ldlm_completion_callback cb_completion,
1319                              ldlm_blocking_callback cb_blocking,
1320                              void *cb_data)
1321 {
1322         int rc;
1323         ENTRY;
1324         EXP_CHECK_MD_OP(exp, enqueue);
1325         MD_COUNTER_INCREMENT(exp->exp_obd, enqueue);
1326         rc = MDP(exp->exp_obd, enqueue)(exp, lock_type, it, lock_mode,
1327                                         data, lockh, lmm, lmmsize,
1328                                         cb_completion, cb_blocking,
1329                                         cb_data);
1330         RETURN(rc);
1331 }
1332
1333 static inline int md_getattr_name(struct obd_export *exp, struct lustre_id *id,
1334                                   char *filename, int namelen,
1335                                   unsigned long valid, unsigned int ea_size,
1336                                   struct ptlrpc_request **request)
1337 {
1338         int rc;
1339         ENTRY;
1340         EXP_CHECK_MD_OP(exp, getattr_name);
1341         MD_COUNTER_INCREMENT(exp->exp_obd, getattr_name);
1342         rc = MDP(exp->exp_obd, getattr_name)(exp, id, filename, namelen,
1343                                              valid, ea_size, request);
1344         RETURN(rc);
1345 }
1346
1347 static inline int md_intent_lock(struct obd_export *exp,
1348                                  struct lustre_id *pid, const char *name,
1349                                  int len, void *lmm, int lmmsize,
1350                                  struct lustre_id *cid, struct lookup_intent *it,
1351                                  int flags, struct ptlrpc_request **reqp,
1352                                  ldlm_blocking_callback cb_blocking)
1353 {
1354         int rc;
1355         ENTRY;
1356         EXP_CHECK_MD_OP(exp, intent_lock);
1357         MD_COUNTER_INCREMENT(exp->exp_obd, intent_lock);
1358         rc = MDP(exp->exp_obd, intent_lock)(exp, pid, name, len,
1359                                             lmm, lmmsize, cid, it, flags,
1360                                             reqp, cb_blocking);
1361         RETURN(rc);
1362 }
1363
1364 static inline int md_link(struct obd_export *exp, struct mdc_op_data *data,
1365                           struct ptlrpc_request **request)
1366 {
1367         int rc;
1368         ENTRY;
1369         EXP_CHECK_MD_OP(exp, link);
1370         MD_COUNTER_INCREMENT(exp->exp_obd, link);
1371         rc = MDP(exp->exp_obd, link)(exp, data, request);
1372         RETURN(rc);
1373 }
1374
1375 static inline int md_rename(struct obd_export *exp, struct mdc_op_data *data,
1376                             const char *old, int oldlen,
1377                             const char *new, int newlen,
1378                             struct ptlrpc_request **request)
1379 {
1380         int rc;
1381         ENTRY;
1382         EXP_CHECK_MD_OP(exp, rename);
1383         MD_COUNTER_INCREMENT(exp->exp_obd, rename);
1384         rc = MDP(exp->exp_obd, rename)(exp, data, old, oldlen, new,
1385                                        newlen, request);
1386         RETURN(rc);
1387 }
1388
1389 static inline int md_setattr(struct obd_export *exp, struct mdc_op_data *data,
1390                              struct iattr *iattr, void *ea, int ealen,
1391                              void *ea2, int ea2len,
1392                              struct ptlrpc_request **request)
1393 {
1394         int rc;
1395         ENTRY;
1396         EXP_CHECK_MD_OP(exp, setattr);
1397         MD_COUNTER_INCREMENT(exp->exp_obd, setattr);
1398         rc = MDP(exp->exp_obd, setattr)(exp, data, iattr, ea, ealen,
1399                                         ea2, ea2len, request);
1400         RETURN(rc);
1401 }
1402
1403 static inline int md_sync(struct obd_export *exp, struct lustre_id *id,
1404                                struct ptlrpc_request **request)
1405 {
1406         int rc;
1407         ENTRY;
1408         EXP_CHECK_MD_OP(exp, sync);
1409         MD_COUNTER_INCREMENT(exp->exp_obd, sync);
1410         rc = MDP(exp->exp_obd, sync)(exp, id, request);
1411         RETURN(rc);
1412 }
1413
1414 static inline int md_readpage(struct obd_export *exp, struct lustre_id *id,
1415                               __u64 offset, struct page *page,
1416                               struct ptlrpc_request **request)
1417 {
1418         int rc;
1419         ENTRY;
1420         EXP_CHECK_MD_OP(exp, readpage);
1421         MD_COUNTER_INCREMENT(exp->exp_obd, readpage);
1422         rc = MDP(exp->exp_obd, readpage)(exp, id, offset, page, request);
1423         RETURN(rc);
1424 }
1425
1426 static inline int md_unlink(struct obd_export *exp, struct mdc_op_data *data,
1427                             struct ptlrpc_request **request)
1428 {
1429         int rc;
1430         ENTRY;
1431         EXP_CHECK_MD_OP(exp, unlink);
1432         MD_COUNTER_INCREMENT(exp->exp_obd, unlink);
1433         rc = MDP(exp->exp_obd, unlink)(exp, data, request);
1434         RETURN(rc);
1435 }
1436
1437 static inline struct obd_device *md_get_real_obd(struct obd_export *exp,
1438                                                  char *name, int len)
1439 {
1440         ENTRY;
1441         if (MDP(exp->exp_obd, get_real_obd) == NULL)
1442                 return exp->exp_obd;
1443         MD_COUNTER_INCREMENT(exp->exp_obd, get_real_obd);
1444         return MDP(exp->exp_obd, get_real_obd)(exp, name, len);
1445 }
1446
1447 static inline int md_valid_attrs(struct obd_export *exp,
1448                                  struct lustre_id *id)
1449 {
1450         ENTRY;
1451         EXP_CHECK_MD_OP(exp, valid_attrs);
1452         MD_COUNTER_INCREMENT(exp->exp_obd, valid_attrs);
1453         return MDP(exp->exp_obd, valid_attrs)(exp, id);
1454 }
1455
1456 static inline int md_req2lustre_md(struct obd_export *exp,
1457                                    struct ptlrpc_request *req,
1458                                    unsigned int offset,
1459                                    struct obd_export *osc_exp,
1460                                    struct lustre_md *md)
1461 {
1462         ENTRY;
1463         EXP_CHECK_MD_OP(exp, req2lustre_md);
1464         MD_COUNTER_INCREMENT(exp->exp_obd, req2lustre_md);
1465         return MDP(exp->exp_obd, req2lustre_md)(exp, req, offset, osc_exp, md);
1466 }
1467
1468 static inline int md_set_open_replay_data(struct obd_export *exp,
1469                                           struct obd_client_handle *och,
1470                                           struct ptlrpc_request *open_req)
1471 {
1472         ENTRY;
1473         EXP_CHECK_MD_OP(exp, set_open_replay_data);
1474         MD_COUNTER_INCREMENT(exp->exp_obd, set_open_replay_data);
1475         return MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req);
1476 }
1477
1478 static inline int md_clear_open_replay_data(struct obd_export *exp,
1479                                             struct obd_client_handle *och)
1480 {
1481         ENTRY;
1482         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
1483         MD_COUNTER_INCREMENT(exp->exp_obd, clear_open_replay_data);
1484         return MDP(exp->exp_obd, clear_open_replay_data)(exp, och);
1485 }
1486
1487 static inline int md_store_inode_generation(struct obd_export *exp,
1488                                             struct ptlrpc_request *req,
1489                                             int reqoff, int repoff)
1490 {
1491         ENTRY;
1492         EXP_CHECK_MD_OP(exp, store_inode_generation);
1493         MD_COUNTER_INCREMENT(exp->exp_obd, store_inode_generation);
1494         return MDP(exp->exp_obd, store_inode_generation)(exp, req,
1495                    reqoff, repoff);
1496 }
1497
1498 static inline int md_set_lock_data(struct obd_export *exp, __u64 *l,
1499                                    void *data)
1500 {
1501         ENTRY;
1502         EXP_CHECK_MD_OP(exp, set_lock_data);
1503         MD_COUNTER_INCREMENT(exp->exp_obd, set_lock_data);
1504         return MDP(exp->exp_obd, set_lock_data)(exp, l, data);
1505 }
1506
1507 /* OBD Metadata Support */
1508
1509 extern int obd_init_caches(void);
1510 extern void obd_cleanup_caches(void);
1511
1512 /* support routines */
1513 extern kmem_cache_t *obdo_cachep;
1514 static inline struct obdo *obdo_alloc(void)
1515 {
1516         struct obdo *oa;
1517
1518         OBD_SLAB_ALLOC(oa, obdo_cachep, GFP_KERNEL, sizeof(*oa));
1519
1520         return oa;
1521 }
1522
1523 static inline void obdo_free(struct obdo *oa)
1524 {
1525         if (!oa)
1526                 return;
1527         OBD_SLAB_FREE(oa, obdo_cachep, sizeof(*oa));
1528 }
1529
1530 #if !defined(__KERNEL__) || (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
1531 #define to_kdev_t(dev) dev
1532 #define kdev_t_to_nr(dev) dev
1533 #endif
1534
1535 /* I'm as embarrassed about this as you are.
1536  *
1537  * <shaver> // XXX do not look into _superhack with remaining eye
1538  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
1539 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
1540 extern void (*ptlrpc_abort_inflight_superhack)(struct obd_import *imp);
1541
1542 /* sysctl.c */
1543 extern void obd_sysctl_init (void);
1544 extern void obd_sysctl_clean (void);
1545
1546 /* uuid.c  */
1547 typedef __u8 class_uuid_t[16];
1548 //int class_uuid_parse(struct obd_uuid in, class_uuid_t out);
1549 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
1550
1551 /* lustre_peer.c    */
1552 int lustre_uuid_to_peer(char *uuid, __u32 *peer_nal, ptl_nid_t *peer_nid);
1553 int class_add_uuid(char *uuid, __u64 nid, __u32 nal);
1554 int class_del_uuid (char *uuid);
1555 void class_init_uuidlist(void);
1556 void class_exit_uuidlist(void);
1557
1558 /* mea.c */
1559 int mea_name2idx(struct mea *mea, char *name, int namelen);
1560 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
1561
1562 #endif /* __LINUX_OBD_CLASS_H */