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, unsigned long flags);
 159 void class_disconnect_exports(struct obd_device *obddev, unsigned long flags);
 160 void class_disconnect_stale_exports(struct obd_device *obddev, unsigned long 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_valid valid);
 170 void obdo_from_inode(struct obdo *dst, struct inode *src, obd_valid valid);
 171 void obdo_refresh_inode(struct inode *dst, struct obdo *src, obd_valid valid);
 172 void obdo_to_inode(struct inode *dst, struct obdo *src, obd_valid valid);
 173 #endif
 174 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_valid valid);
 175 int obdo_cmp_md(struct obdo *dst, struct obdo *src, obd_valid 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
 319 #define MD_COUNTER_OFFSET(op)                                  \
 320         ((offsetof(struct md_ops, m_ ## op) -                  \
 321           offsetof(struct md_ops, m_getstatus))                \
 322          / sizeof(((struct md_ops *)(0))->m_getstatus))
 323
 324 #define MD_COUNTER_INCREMENT(obd, op)                           \
 325         if ((obd)->md_stats != NULL) {                          \
 326                 unsigned int coffset;                           \
 327                 coffset = (unsigned int)(obd)->md_cntr_base +   \
 328                         MD_COUNTER_OFFSET(op);                  \
 329                 LASSERT(coffset < (obd)->md_stats->ls_num);     \
 330                 lprocfs_counter_incr((obd)->md_stats, coffset); \
 331         }
 332
 333 #else
 334 #define OBD_COUNTER_OFFSET(op)
 335 #define OBD_COUNTER_INCREMENT(obd, op)
 336 #define MD_COUNTER_INCREMENT(obd, op)
 337 #endif
 338
 339 #define OBD_CHECK_MD_OP(obd, op, err)                           \
 340 do {                                                            \
 341         if (!OBT(obd) || !MDP((obd), op)) {\
 342                 if (err)                                        \
 343                         CERROR("obd_md" #op ": dev %d no operation\n",    \
 344                                obd->obd_minor);                 \
 345                 RETURN(err);                                    \
 346         }                                                       \
 347 } while (0)
 348
 349 #define EXP_CHECK_MD_OP(exp, op)                                \
 350 do {                                                            \
 351         if ((exp) == NULL) {                                    \
 352                 CERROR("obd_" #op ": NULL export\n");           \
 353                 portals_debug_dumplog();                        \
 354                 RETURN(-ENODEV);                                \
 355         }                                                       \
 356         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 357                 CERROR("obd_" #op ": cleaned up obd\n");        \
 358                 RETURN(-EOPNOTSUPP);                            \
 359         }                                                       \
 360         if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
 361                 CERROR("obd_" #op ": dev %d no operation\n",    \
 362                        (exp)->exp_obd->obd_minor);              \
 363                 RETURN(-EOPNOTSUPP);                            \
 364         }                                                       \
 365 } while (0)
 366
 367 #define OBD_CHECK_OP(obd, op, err)                              \
 368 do {                                                            \
 369         if (!OBT(obd) || !OBP((obd), op)) {\
 370                 if (err)                                        \
 371                         CERROR("obd_" #op ": dev %d no operation\n",    \
 372                                obd->obd_minor);                         \
 373                 RETURN(err);                                    \
 374         }                                                       \
 375 } while (0)
 376
 377 #define EXP_CHECK_OP(exp, op)                                   \
 378 do {                                                            \
 379         if ((exp) == NULL) {                                    \
 380                 CERROR("obd_" #op ": NULL export\n");           \
 381                 portals_debug_dumplog();                        \
 382                 RETURN(-ENODEV);                                \
 383         }                                                       \
 384         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 385                 CERROR("obd_" #op ": cleaned up obd\n");        \
 386                 RETURN(-EOPNOTSUPP);                            \
 387         }                                                       \
 388         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 389                 CERROR("obd_" #op ": dev %d no operation\n",    \
 390                        (exp)->exp_obd->obd_minor);              \
 391                 RETURN(-EOPNOTSUPP);                            \
 392         }                                                       \
 393 } while (0)
 394
 395 #define CTXT_CHECK_OP(ctxt, op, err)                            \
 396 do {                                                            \
 397         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {        \
 398                 if (err)                                        \
 399                         CERROR("lop_" #op ": dev %d no operation\n",    \
 400                                ctxt->loc_obd->obd_minor);               \
 401                 RETURN(err);                                    \
 402         }                                                       \
 403 } while (0)
 404
 405 static inline int obd_get_info(struct obd_export *exp, __u32 keylen,
 406                                void *key, __u32 *vallen, void *val)
 407 {
 408         int rc;
 409         ENTRY;
 410
 411         EXP_CHECK_OP(exp, get_info);
 412         OBD_COUNTER_INCREMENT(exp->exp_obd, get_info);
 413
 414         rc = OBP(exp->exp_obd, get_info)(exp, keylen, key, vallen, val);
 415         RETURN(rc);
 416 }
 417
 418 static inline int obd_set_info(struct obd_export *exp, obd_count keylen,
 419                                void *key, obd_count vallen, void *val)
 420 {
 421         int rc;
 422         ENTRY;
 423
 424         EXP_CHECK_OP(exp, set_info);
 425         OBD_COUNTER_INCREMENT(exp->exp_obd, set_info);
 426
 427         rc = OBP(exp->exp_obd, set_info)(exp, keylen, key, vallen, val);
 428         RETURN(rc);
 429 }
 430
 431 static inline int obd_setup(struct obd_device *obd, int datalen, void *data)
 432 {
 433         int rc;
 434         ENTRY;
 435
 436         OBD_CHECK_OP(obd, setup, -EOPNOTSUPP);
 437         OBD_COUNTER_INCREMENT(obd, setup);
 438
 439         rc = OBP(obd, setup)(obd, datalen, data);
 440         RETURN(rc);
 441 }
 442
 443 static inline int obd_precleanup(struct obd_device *obd, int flags)
 444 {
 445         int rc;
 446         ENTRY;
 447
 448         OBD_CHECK_OP(obd, precleanup, 0);
 449         OBD_COUNTER_INCREMENT(obd, precleanup);
 450
 451         rc = OBP(obd, precleanup)(obd, flags);
 452         RETURN(rc);
 453 }
 454
 455 static inline int obd_cleanup(struct obd_device *obd, int flags)
 456 {
 457         int rc;
 458         ENTRY;
 459
 460         OBD_CHECK_DEV_STOPPING(obd);
 461         OBD_CHECK_OP(obd, cleanup, 0);
 462         OBD_COUNTER_INCREMENT(obd, cleanup);
 463
 464         rc = OBP(obd, cleanup)(obd, flags);
 465         RETURN(rc);
 466 }
 467
 468 static inline int
 469 obd_process_config(struct obd_device *obd, int datalen, void *data)
 470 {
 471         int rc;
 472         ENTRY;
 473
 474         OBD_CHECK_OP(obd, process_config, -EOPNOTSUPP);
 475         OBD_COUNTER_INCREMENT(obd, process_config);
 476
 477         rc = OBP(obd, process_config)(obd, datalen, data);
 478         RETURN(rc);
 479 }
 480
 481 /* Pack an in-memory MD struct for storage on disk.
 482  * Returns +ve size of packed MD (0 for free), or -ve error.
 483  *
 484  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 485  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 486  * If @*disk_tgt == NULL, it will be allocated
 487  */
 488 static inline int obd_packmd(struct obd_export *exp,
 489                              struct lov_mds_md **disk_tgt,
 490                              struct lov_stripe_md *mem_src)
 491 {
 492         int rc;
 493         ENTRY;
 494
 495         EXP_CHECK_OP(exp, packmd);
 496         OBD_COUNTER_INCREMENT(exp->exp_obd, packmd);
 497
 498         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 499         RETURN(rc);
 500 }
 501
 502 static inline int obd_size_diskmd(struct obd_export *exp,
 503                                   struct lov_stripe_md *mem_src)
 504 {
 505         return obd_packmd(exp, NULL, mem_src);
 506 }
 507
 508 /* helper functions */
 509 static inline int obd_alloc_diskmd(struct obd_export *exp,
 510                                    struct lov_mds_md **disk_tgt)
 511 {
 512         LASSERT(disk_tgt);
 513         LASSERT(*disk_tgt == NULL);
 514         return obd_packmd(exp, disk_tgt, NULL);
 515 }
 516
 517 static inline int obd_free_diskmd(struct obd_export *exp,
 518                                   struct lov_mds_md **disk_tgt)
 519 {
 520         LASSERT(disk_tgt);
 521         LASSERT(*disk_tgt);
 522         return obd_packmd(exp, disk_tgt, NULL);
 523 }
 524
 525 /* Unpack an MD struct from disk to in-memory format.
 526  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 527  *
 528  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 529  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 530  * If @*mem_tgt == NULL, it will be allocated
 531  */
 532 static inline int obd_unpackmd(struct obd_export *exp,
 533                                struct lov_stripe_md **mem_tgt,
 534                                struct lov_mds_md *disk_src,
 535                                int disk_len)
 536 {
 537         int rc;
 538         ENTRY;
 539
 540         EXP_CHECK_OP(exp, unpackmd);
 541         OBD_COUNTER_INCREMENT(exp->exp_obd, unpackmd);
 542
 543         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 544         RETURN(rc);
 545 }
 546
 547 /* helper functions */
 548 static inline int obd_alloc_memmd(struct obd_export *exp,
 549                                   struct lov_stripe_md **mem_tgt)
 550 {
 551         LASSERT(mem_tgt);
 552         LASSERT(*mem_tgt == NULL);
 553         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 554 }
 555
 556 static inline int obd_free_memmd(struct obd_export *exp,
 557                                  struct lov_stripe_md **mem_tgt)
 558 {
 559         LASSERT(mem_tgt);
 560         LASSERT(*mem_tgt);
 561         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 562 }
 563
 564 static inline int obd_revalidate_md(struct obd_export *exp, struct obdo *obdo,
 565                                     struct lov_stripe_md *ea,
 566                                     struct obd_trans_info *oti)
 567 {
 568         int rc;
 569         ENTRY;
 570
 571         EXP_CHECK_OP(exp, revalidate_md);
 572         OBD_COUNTER_INCREMENT(exp->exp_obd, revalidate_md);
 573
 574         rc = OBP(exp->exp_obd, revalidate_md)(exp, obdo, ea, oti);
 575         RETURN(rc);
 576 }
 577
 578 static inline int obd_create(struct obd_export *exp, struct obdo *obdo,
 579                              struct lov_stripe_md **ea,
 580                              struct obd_trans_info *oti)
 581 {
 582         int rc;
 583         ENTRY;
 584
 585         EXP_CHECK_OP(exp, create);
 586         OBD_COUNTER_INCREMENT(exp->exp_obd, create);
 587
 588         rc = OBP(exp->exp_obd, create)(exp, obdo, ea, oti);
 589         RETURN(rc);
 590 }
 591
 592 static inline int obd_destroy(struct obd_export *exp, struct obdo *obdo,
 593                               struct lov_stripe_md *ea,
 594                               struct obd_trans_info *oti)
 595 {
 596         int rc;
 597         ENTRY;
 598
 599         EXP_CHECK_OP(exp, destroy);
 600         OBD_COUNTER_INCREMENT(exp->exp_obd, destroy);
 601
 602         rc = OBP(exp->exp_obd, destroy)(exp, obdo, ea, oti);
 603         RETURN(rc);
 604 }
 605
 606 static inline int obd_getattr(struct obd_export *exp, struct obdo *obdo,
 607                               struct lov_stripe_md *ea)
 608 {
 609         int rc;
 610         ENTRY;
 611
 612         EXP_CHECK_OP(exp, getattr);
 613         OBD_COUNTER_INCREMENT(exp->exp_obd, getattr);
 614
 615         rc = OBP(exp->exp_obd, getattr)(exp, obdo, ea);
 616         RETURN(rc);
 617 }
 618
 619 static inline int obd_getattr_async(struct obd_export *exp,
 620                                     struct obdo *obdo, struct lov_stripe_md *ea,
 621                                     struct ptlrpc_request_set *set)
 622 {
 623         int rc;
 624         ENTRY;
 625
 626         EXP_CHECK_OP(exp, getattr);
 627         OBD_COUNTER_INCREMENT(exp->exp_obd, getattr);
 628
 629         rc = OBP(exp->exp_obd, getattr_async)(exp, obdo, ea, set);
 630         RETURN(rc);
 631 }
 632
 633 static inline int obd_setattr(struct obd_export *exp, struct obdo *obdo,
 634                               struct lov_stripe_md *ea,
 635                               struct obd_trans_info *oti)
 636 {
 637         int rc;
 638         ENTRY;
 639
 640         EXP_CHECK_OP(exp, setattr);
 641         OBD_COUNTER_INCREMENT(exp->exp_obd, setattr);
 642
 643         rc = OBP(exp->exp_obd, setattr)(exp, obdo, ea, oti);
 644         RETURN(rc);
 645 }
 646 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 647                                int priority)
 648 {
 649         struct obd_device *obd = imp->imp_obd;
 650         int rc;
 651         ENTRY;
 652
 653         OBD_CHECK_DEV_ACTIVE(obd);
 654         OBD_CHECK_OP(obd, add_conn, -EOPNOTSUPP);
 655         OBD_COUNTER_INCREMENT(obd, add_conn);
 656
 657         rc = OBP(obd, add_conn)(imp, uuid, priority);
 658         RETURN(rc);
 659 }
 660
 661 static inline int obd_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
 662 {
 663         struct obd_device *obd = imp->imp_obd;
 664         int rc;
 665         ENTRY;
 666
 667         OBD_CHECK_DEV_ACTIVE(obd);
 668         OBD_CHECK_OP(obd, del_conn, -EOPNOTSUPP);
 669         OBD_COUNTER_INCREMENT(obd, del_conn);
 670
 671         rc = OBP(obd, del_conn)(imp, uuid);
 672         RETURN(rc);
 673 }
 674
 675
 676 static inline int obd_connect(struct lustre_handle *conn,
 677                               struct obd_device *obd, struct obd_uuid *cluuid,
 678                               unsigned long connect_flags)
 679 {
 680         int rc;
 681         ENTRY;
 682
 683         OBD_CHECK_DEV_ACTIVE(obd);
 684         OBD_CHECK_OP(obd, connect, -EOPNOTSUPP);
 685         OBD_COUNTER_INCREMENT(obd, connect);
 686
 687         rc = OBP(obd, connect)(conn, obd, cluuid, connect_flags);
 688         RETURN(rc);
 689 }
 690
 691 static inline int obd_connect_post(struct obd_export *exp, unsigned long flags)
 692 {
 693         int rc;
 694         ENTRY;
 695
 696         OBD_CHECK_DEV_ACTIVE(exp->exp_obd);
 697         if (!OBT(exp->exp_obd) || !OBP((exp->exp_obd), connect_post))
 698                 RETURN(0);
 699         OBD_COUNTER_INCREMENT(exp->exp_obd, connect_post);
 700         rc = OBP(exp->exp_obd, connect_post)(exp, flags);
 701         RETURN(rc);
 702 }
 703
 704 static inline int obd_disconnect(struct obd_export *exp, unsigned long flags)
 705 {
 706         int rc;
 707         ENTRY;
 708
 709         EXP_CHECK_OP(exp, disconnect);
 710         OBD_COUNTER_INCREMENT(exp->exp_obd, disconnect);
 711
 712         rc = OBP(exp->exp_obd, disconnect)(exp, flags);
 713         RETURN(rc);
 714 }
 715
 716 static inline int obd_getready(struct obd_export *exp)
 717 {
 718         int rc;
 719         ENTRY;
 720
 721         if (!OBP(exp->exp_obd, getready))
 722                 RETURN(0);
 723         rc = OBP(exp->exp_obd, getready)(exp);
 724         RETURN(rc);
 725 }
 726
 727 static inline int obd_init_export(struct obd_export *exp)
 728 {
 729         int rc = 0;
 730
 731         ENTRY;
 732         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 733             OBP((exp)->exp_obd, init_export))
 734                 rc = OBP(exp->exp_obd, init_export)(exp);
 735         RETURN(rc);
 736 }
 737
 738 static inline int obd_destroy_export(struct obd_export *exp)
 739 {
 740         ENTRY;
 741         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 742             OBP((exp)->exp_obd, destroy_export))
 743                 OBP(exp->exp_obd, destroy_export)(exp);
 744         RETURN(0);
 745 }
 746
 747 static inline struct dentry *
 748 obd_lvfs_id2dentry(struct obd_export *exp, __u64 ino,
 749                    __u32 gen, __u64 gr)
 750 {
 751         LASSERT(exp->exp_obd);
 752
 753         return lvfs_id2dentry(&exp->exp_obd->obd_lvfs_ctxt,
 754                               ino, gen, gr, exp->exp_obd);
 755 }
 756
 757 #ifndef time_before
 758 #define time_before(t1, t2) ((long)t2 - (long)t1 > 0)
 759 #endif
 760
 761 /* @max_age is the oldest time in jiffies that we accept using a cached data.
 762  * If the cache is older than @max_age we will get a new value from the
 763  * target.  Use a value of "jiffies + HZ" to guarantee freshness. */
 764 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
 765                              unsigned long max_age)
 766 {
 767         int rc = 0;
 768         ENTRY;
 769
 770         if (obd == NULL)
 771                 RETURN(-EINVAL);
 772
 773         OBD_CHECK_OP(obd, statfs, -EOPNOTSUPP);
 774         OBD_COUNTER_INCREMENT(obd, statfs);
 775
 776         CDEBUG(D_SUPER, "osfs %lu, max_age %lu\n", obd->obd_osfs_age, max_age);
 777         if (time_before(obd->obd_osfs_age, max_age)) {
 778                 rc = OBP(obd, statfs)(obd, osfs, max_age);
 779                 if (rc == 0) {
 780                         spin_lock(&obd->obd_osfs_lock);
 781                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
 782                         obd->obd_osfs_age = jiffies;
 783                         spin_unlock(&obd->obd_osfs_lock);
 784                 }
 785         } else {
 786                 CDEBUG(D_SUPER, "using cached obd_statfs data\n");
 787                 spin_lock(&obd->obd_osfs_lock);
 788                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
 789                 spin_unlock(&obd->obd_osfs_lock);
 790         }
 791         RETURN(rc);
 792 }
 793
 794 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
 795                            struct lov_stripe_md *ea, obd_size start,
 796                            obd_size end)
 797 {
 798         int rc;
 799         ENTRY;
 800
 801         OBD_CHECK_OP(exp->exp_obd, sync, -EOPNOTSUPP);
 802         OBD_COUNTER_INCREMENT(exp->exp_obd, sync);
 803
 804         rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end);
 805         RETURN(rc);
 806 }
 807
 808 static inline int obd_punch(struct obd_export *exp, struct obdo *oa,
 809                             struct lov_stripe_md *ea, obd_size start,
 810                             obd_size end, struct obd_trans_info *oti)
 811 {
 812         int rc;
 813         ENTRY;
 814
 815         EXP_CHECK_OP(exp, punch);
 816         OBD_COUNTER_INCREMENT(exp->exp_obd, punch);
 817
 818         rc = OBP(exp->exp_obd, punch)(exp, oa, ea, start, end, oti);
 819         RETURN(rc);
 820 }
 821
 822 static inline int obd_brw(int cmd, struct obd_export *exp, struct obdo *oa,
 823                           struct lov_stripe_md *ea, obd_count oa_bufs,
 824                           struct brw_page *pg, struct obd_trans_info *oti)
 825 {
 826         int rc;
 827         ENTRY;
 828
 829         EXP_CHECK_OP(exp, brw);
 830         OBD_COUNTER_INCREMENT(exp->exp_obd, brw);
 831
 832         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
 833                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
 834                        "or OBD_BRW_CHECK\n");
 835                 LBUG();
 836         }
 837
 838         rc = OBP(exp->exp_obd, brw)(cmd, exp, oa, ea, oa_bufs, pg, oti);
 839         RETURN(rc);
 840 }
 841
 842 static inline int obd_brw_async(int cmd, struct obd_export *exp,
 843                                 struct obdo *oa, struct lov_stripe_md *ea,
 844                                 obd_count oa_bufs, struct brw_page *pg,
 845                                 struct ptlrpc_request_set *set,
 846                                 struct obd_trans_info *oti)
 847 {
 848         int rc;
 849         ENTRY;
 850
 851         EXP_CHECK_OP(exp, brw_async);
 852         OBD_COUNTER_INCREMENT(exp->exp_obd, brw_async);
 853
 854         if (!(cmd & OBD_BRW_RWMASK)) {
 855                 CERROR("obd_brw: cmd must be OBD_BRW_READ or OBD_BRW_WRITE\n");
 856                 LBUG();
 857         }
 858
 859         rc = OBP(exp->exp_obd, brw_async)(cmd, exp, oa, ea, oa_bufs, pg, set,
 860                                           oti);
 861         RETURN(rc);
 862 }
 863
 864 static inline  int obd_prep_async_page(struct obd_export *exp,
 865                                        struct lov_stripe_md *lsm,
 866                                        struct lov_oinfo *loi,
 867                                        struct page *page, obd_off offset,
 868                                        struct obd_async_page_ops *ops,
 869                                        void *data, void **res)
 870 {
 871         int ret;
 872         ENTRY;
 873
 874         OBD_CHECK_OP(exp->exp_obd, prep_async_page, -EOPNOTSUPP);
 875         OBD_COUNTER_INCREMENT(exp->exp_obd, prep_async_page);
 876
 877         ret = OBP(exp->exp_obd, prep_async_page)(exp, lsm, loi, page, offset,
 878                                                  ops, data, res);
 879         RETURN(ret);
 880 }
 881
 882 static inline int obd_queue_async_io(struct obd_export *exp,
 883                                      struct lov_stripe_md *lsm,
 884                                      struct lov_oinfo *loi, void *cookie,
 885                                      int cmd, obd_off off, int count,
 886                                      obd_flags brw_flags, obd_flags async_flags)
 887 {
 888         int rc;
 889         ENTRY;
 890
 891         OBD_CHECK_OP(exp->exp_obd, queue_async_io, -EOPNOTSUPP);
 892         OBD_COUNTER_INCREMENT(exp->exp_obd, queue_async_io);
 893         LASSERT(cmd & OBD_BRW_RWMASK);
 894
 895         rc = OBP(exp->exp_obd, queue_async_io)(exp, lsm, loi, cookie, cmd, off,
 896                                                count, brw_flags, async_flags);
 897         RETURN(rc);
 898 }
 899
 900 static inline int obd_set_async_flags(struct obd_export *exp,
 901                                       struct lov_stripe_md *lsm,
 902                                       struct lov_oinfo *loi, void *cookie,
 903                                       obd_flags async_flags)
 904 {
 905         int rc;
 906         ENTRY;
 907
 908         OBD_CHECK_OP(exp->exp_obd, set_async_flags, -EOPNOTSUPP);
 909         OBD_COUNTER_INCREMENT(exp->exp_obd, set_async_flags);
 910
 911         rc = OBP(exp->exp_obd, set_async_flags)(exp, lsm, loi, cookie,
 912                                                 async_flags);
 913         RETURN(rc);
 914 }
 915
 916 static inline int obd_queue_group_io(struct obd_export *exp,
 917                                      struct lov_stripe_md *lsm,
 918                                      struct lov_oinfo *loi,
 919                                      struct obd_io_group *oig,
 920                                      void *cookie, int cmd, obd_off off,
 921                                      int count, obd_flags brw_flags,
 922                                      obd_flags async_flags)
 923 {
 924         int rc;
 925         ENTRY;
 926
 927         OBD_CHECK_OP(exp->exp_obd, queue_group_io, -EOPNOTSUPP);
 928         OBD_COUNTER_INCREMENT(exp->exp_obd, queue_group_io);
 929         LASSERT(cmd & OBD_BRW_RWMASK);
 930
 931         rc = OBP(exp->exp_obd, queue_group_io)(exp, lsm, loi, oig, cookie,
 932                                                cmd, off, count, brw_flags,
 933                                                async_flags);
 934         RETURN(rc);
 935 }
 936
 937 static inline int obd_trigger_group_io(struct obd_export *exp,
 938                                        struct lov_stripe_md *lsm,
 939                                        struct lov_oinfo *loi,
 940                                        struct obd_io_group *oig)
 941 {
 942         int rc;
 943         ENTRY;
 944
 945         OBD_CHECK_OP(exp->exp_obd, trigger_group_io, -EOPNOTSUPP);
 946         OBD_COUNTER_INCREMENT(exp->exp_obd, trigger_group_io);
 947
 948         rc = OBP(exp->exp_obd, trigger_group_io)(exp, lsm, loi, oig);
 949         RETURN(rc);
 950 }
 951
 952 static inline int obd_teardown_async_page(struct obd_export *exp,
 953                                           struct lov_stripe_md *lsm,
 954                                           struct lov_oinfo *loi, void *cookie)
 955 {
 956         int rc;
 957         ENTRY;
 958
 959         OBD_CHECK_OP(exp->exp_obd, teardown_async_page, -EOPNOTSUPP);
 960         OBD_COUNTER_INCREMENT(exp->exp_obd, teardown_async_page);
 961
 962         rc = OBP(exp->exp_obd, teardown_async_page)(exp, lsm, loi, cookie);
 963         RETURN(rc);
 964 }
 965
 966 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
 967                              int objcount, struct obd_ioobj *obj,
 968                              int niocount, struct niobuf_remote *remote,
 969                              struct niobuf_local *local,
 970                              struct obd_trans_info *oti)
 971 {
 972         int rc;
 973         ENTRY;
 974
 975         OBD_CHECK_OP(exp->exp_obd, preprw, -EOPNOTSUPP);
 976         OBD_COUNTER_INCREMENT(exp->exp_obd, preprw);
 977
 978         rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, niocount,
 979                                        remote, local, oti);
 980         RETURN(rc);
 981 }
 982
 983 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
 984                                int objcount, struct obd_ioobj *obj,
 985                                int niocount, struct niobuf_local *local,
 986                                struct obd_trans_info *oti, int rc)
 987 {
 988         ENTRY;
 989
 990         OBD_CHECK_OP(exp->exp_obd, commitrw, -EOPNOTSUPP);
 991         OBD_COUNTER_INCREMENT(exp->exp_obd, commitrw);
 992
 993         rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj, niocount,
 994                                          local, oti, rc);
 995         RETURN(rc);
 996 }
 997
 998 static inline int obd_do_cow(struct obd_export *exp, struct obd_ioobj *obj,
 999                             int objcount,struct niobuf_remote *rnb)
1000 {
1001         int rc;
1002         ENTRY;
1003
1004         /* there are cases when write_extents is not implemented. */
1005         if (!OBP(exp->exp_obd, do_cow))
1006                 RETURN(0);
1007
1008         OBD_COUNTER_INCREMENT(exp->exp_obd, do_cow);
1009
1010         rc = OBP(exp->exp_obd, do_cow)(exp, obj, objcount, rnb);
1011
1012         RETURN(rc);
1013 }
1014
1015 static inline int obd_write_extents(struct obd_export *exp,
1016                                     struct obd_ioobj *obj,
1017                                     int objcount, int niocount,
1018                                     struct niobuf_local *local,
1019                                     int rc)
1020 {
1021         ENTRY;
1022
1023         /* there are cases when write_extents is not implemented. */
1024         if (!OBP(exp->exp_obd, write_extents))
1025                 RETURN(0);
1026
1027         OBD_COUNTER_INCREMENT(exp->exp_obd, write_extents);
1028
1029         rc = OBP(exp->exp_obd, write_extents)(exp, obj, objcount, niocount,
1030                                               local, rc);
1031         RETURN(rc);
1032 }
1033
1034 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1035                                 int len, void *karg, void *uarg)
1036 {
1037         int rc;
1038         ENTRY;
1039
1040         EXP_CHECK_OP(exp, iocontrol);
1041         OBD_COUNTER_INCREMENT(exp->exp_obd, iocontrol);
1042
1043         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1044         RETURN(rc);
1045 }
1046
1047 static inline int obd_enqueue(struct obd_export *exp, struct lov_stripe_md *ea,
1048                               __u32 type, ldlm_policy_data_t *policy,
1049                               __u32 mode, int *flags, void *bl_cb, void *cp_cb,
1050                               void *gl_cb, void *data, __u32 lvb_len,
1051                               void *lvb_swabber, struct lustre_handle *lockh)
1052 {
1053         int rc;
1054         ENTRY;
1055
1056         EXP_CHECK_OP(exp, enqueue);
1057         OBD_COUNTER_INCREMENT(exp->exp_obd, enqueue);
1058
1059         rc = OBP(exp->exp_obd, enqueue)(exp, ea, type, policy, mode, flags,
1060                                         bl_cb, cp_cb, gl_cb, data, lvb_len,
1061                                         lvb_swabber, lockh);
1062         RETURN(rc);
1063 }
1064
1065 static inline int obd_match(struct obd_export *exp, struct lov_stripe_md *ea,
1066                             __u32 type, ldlm_policy_data_t *policy, __u32 mode,
1067                             int *flags, void *data, struct lustre_handle *lockh)
1068 {
1069         int rc;
1070         ENTRY;
1071
1072         EXP_CHECK_OP(exp, match);
1073         OBD_COUNTER_INCREMENT(exp->exp_obd, match);
1074
1075         rc = OBP(exp->exp_obd, match)(exp, ea, type, policy, mode, flags, data,
1076                                       lockh);
1077         RETURN(rc);
1078 }
1079
1080 static inline int obd_change_cbdata(struct obd_export *exp,
1081                                     struct lov_stripe_md *lsm,
1082                                     ldlm_iterator_t it, void *data)
1083 {
1084         int rc;
1085         ENTRY;
1086
1087         EXP_CHECK_OP(exp, change_cbdata);
1088         OBD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata);
1089
1090         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1091         RETURN(rc);
1092 }
1093
1094 static inline int obd_cancel(struct obd_export *exp,
1095                              struct lov_stripe_md *ea, __u32 mode,
1096                              struct lustre_handle *lockh)
1097 {
1098         int rc;
1099         ENTRY;
1100
1101         EXP_CHECK_OP(exp, cancel);
1102         OBD_COUNTER_INCREMENT(exp->exp_obd, cancel);
1103
1104         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1105         RETURN(rc);
1106 }
1107
1108 static inline int obd_cancel_unused(struct obd_export *exp,
1109                                     struct lov_stripe_md *ea, int flags,
1110                                     void *opaque)
1111 {
1112         int rc;
1113         ENTRY;
1114
1115         EXP_CHECK_OP(exp, cancel_unused);
1116         OBD_COUNTER_INCREMENT(exp->exp_obd, cancel_unused);
1117
1118         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1119         RETURN(rc);
1120 }
1121
1122
1123 static inline int obd_san_preprw(int cmd, struct obd_export *exp,
1124                                  struct obdo *oa,
1125                                  int objcount, struct obd_ioobj *obj,
1126                                  int niocount, struct niobuf_remote *remote)
1127 {
1128         int rc;
1129
1130         EXP_CHECK_OP(exp, preprw);
1131         OBD_COUNTER_INCREMENT(exp->exp_obd, preprw);
1132
1133         rc = OBP(exp->exp_obd, san_preprw)(cmd, exp, oa, objcount, obj,
1134                                            niocount, remote);
1135         class_export_put(exp);
1136         return(rc);
1137 }
1138
1139 static inline int obd_pin(struct obd_export *exp, obd_id ino, __u32 gen,
1140                           int type, struct obd_client_handle *handle, int flag)
1141 {
1142         int rc;
1143
1144         EXP_CHECK_OP(exp, pin);
1145         OBD_COUNTER_INCREMENT(exp->exp_obd, pin);
1146
1147         rc = OBP(exp->exp_obd, pin)(exp, ino, gen, type, handle, flag);
1148         return(rc);
1149 }
1150
1151 static inline int obd_unpin(struct obd_export *exp,
1152                             struct obd_client_handle *handle, int flag)
1153 {
1154         int rc;
1155
1156         EXP_CHECK_OP(exp, unpin);
1157         OBD_COUNTER_INCREMENT(exp->exp_obd, unpin);
1158
1159         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1160         return(rc);
1161 }
1162
1163
1164 static inline void obd_import_event(struct obd_device *obd,
1165                                     struct obd_import *imp,
1166                                     enum obd_import_event event)
1167 {
1168         if (obd->obd_set_up && OBP(obd, import_event)) {
1169                 OBD_COUNTER_INCREMENT(obd, import_event);
1170                 OBP(obd, import_event)(obd, imp, event);
1171         }
1172 }
1173
1174 static inline int obd_llog_connect(struct obd_export *exp,
1175                                         struct llogd_conn_body *body)
1176 {
1177         ENTRY;
1178         EXP_CHECK_OP(exp, llog_connect);
1179         return OBP(exp->exp_obd, llog_connect)(exp, body);
1180 }
1181
1182 static inline int obd_notify(struct obd_device *obd, struct obd_device *watched,
1183                              int active, void *data)
1184 {
1185         if (!obd->obd_set_up) {
1186                 CERROR("obd %s not set up\n", obd->obd_name);
1187                 return -EINVAL;
1188         }
1189
1190         if (!OBP(obd, notify)) {
1191                 CERROR("obd %s has no notify handler\n", obd->obd_name);
1192                 return -ENOSYS;
1193         }
1194
1195         OBD_COUNTER_INCREMENT(obd, notify);
1196         return OBP(obd, notify)(obd, watched, active, data);
1197 }
1198
1199 static inline int obd_register_observer(struct obd_device *obd,
1200                                         struct obd_device *observer)
1201 {
1202         ENTRY;
1203         if (obd->obd_observer && observer)
1204                 RETURN(-EALREADY);
1205         obd->obd_observer = observer;
1206         RETURN(0);
1207 }
1208
1209 static inline int obd_init_ea_size(struct obd_export *exp, int size, int size2)
1210 {
1211         int rc;
1212         ENTRY;
1213         LASSERT(OBP(exp->exp_obd, init_ea_size) != NULL);
1214         OBD_COUNTER_INCREMENT(exp->exp_obd, init_ea_size);
1215         rc = OBP(exp->exp_obd, init_ea_size)(exp, size, size2);
1216         RETURN(rc);
1217 }
1218
1219 static inline int md_getstatus(struct obd_export *exp, struct lustre_id *id)
1220 {
1221         int rc;
1222
1223         EXP_CHECK_MD_OP(exp, getstatus);
1224         MD_COUNTER_INCREMENT(exp->exp_obd, getstatus);
1225         rc = MDP(exp->exp_obd, getstatus)(exp, id);
1226         RETURN(rc);
1227 }
1228
1229 static inline int md_delete_inode(struct obd_export *exp,
1230                                   struct lustre_id *id)
1231 {
1232         int rc;
1233         ENTRY;
1234
1235         if (MDP(exp->exp_obd, delete_inode) == NULL)
1236                 RETURN(0);
1237
1238         MD_COUNTER_INCREMENT(exp->exp_obd, delete_inode);
1239         rc = MDP(exp->exp_obd, delete_inode)(exp, id);
1240         RETURN(rc);
1241 }
1242
1243 static inline int md_getattr(struct obd_export *exp, struct lustre_id *id,
1244                              __u64 valid, unsigned int ea_size,
1245                              struct ptlrpc_request **request)
1246 {
1247         int rc;
1248         ENTRY;
1249         EXP_CHECK_MD_OP(exp, getattr);
1250         MD_COUNTER_INCREMENT(exp->exp_obd, getattr);
1251         rc = MDP(exp->exp_obd, getattr)(exp, id, valid, ea_size, request);
1252         RETURN(rc);
1253 }
1254
1255 static inline int md_change_cbdata(struct obd_export *exp, struct lustre_id *id,
1256                                    ldlm_iterator_t it, void *data)
1257 {
1258         int rc;
1259         ENTRY;
1260         EXP_CHECK_MD_OP(exp, change_cbdata);
1261         MD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata);
1262         rc = MDP(exp->exp_obd, change_cbdata)(exp, id, it, data);
1263         RETURN(rc);
1264 }
1265
1266 static inline int md_change_cbdata_name(struct obd_export *exp,
1267                                         struct lustre_id *id, char *name,
1268                                         int namelen, struct lustre_id *id2,
1269                                         ldlm_iterator_t it, void *data)
1270 {
1271         int rc;
1272
1273         /* this seem to be needed only for lmv. */
1274         if (!MDP(exp->exp_obd, change_cbdata_name))
1275                 return 0;
1276
1277         ENTRY;
1278
1279         MD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata_name);
1280         rc = MDP(exp->exp_obd, change_cbdata_name)(exp, id, name, namelen,
1281                                                    id2, it, data);
1282         RETURN(rc);
1283 }
1284
1285 static inline int md_close(struct obd_export *exp, struct obdo *obdo,
1286                            struct obd_client_handle *och,
1287                            struct ptlrpc_request **request)
1288 {
1289         int rc;
1290         ENTRY;
1291         EXP_CHECK_MD_OP(exp, close);
1292         MD_COUNTER_INCREMENT(exp->exp_obd, close);
1293         rc = MDP(exp->exp_obd, close)(exp, obdo, och, request);
1294         RETURN(rc);
1295 }
1296
1297 static inline int md_create(struct obd_export *exp, struct mdc_op_data *op_data,
1298                             const void *data, int datalen, int mode,
1299                             __u32 uid, __u32 gid, __u64 rdev,
1300                             struct ptlrpc_request **request)
1301 {
1302         int rc;
1303         ENTRY;
1304         EXP_CHECK_MD_OP(exp, create);
1305         MD_COUNTER_INCREMENT(exp->exp_obd, create);
1306         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1307                                        uid, gid, rdev, request);
1308         RETURN(rc);
1309 }
1310
1311 static inline int md_done_writing(struct obd_export *exp, struct obdo *obdo)
1312 {
1313         int rc;
1314         ENTRY;
1315         EXP_CHECK_MD_OP(exp, done_writing);
1316         MD_COUNTER_INCREMENT(exp->exp_obd, done_writing);
1317         rc = MDP(exp->exp_obd, done_writing)(exp, obdo);
1318         RETURN(rc);
1319 }
1320
1321 static inline int md_enqueue(struct obd_export *exp, int lock_type,
1322                              struct lookup_intent *it, int lock_mode,
1323                              struct mdc_op_data *data,
1324                              struct lustre_handle *lockh,
1325                              void *lmm, int lmmsize,
1326                              ldlm_completion_callback cb_completion,
1327                              ldlm_blocking_callback cb_blocking,
1328                              void *cb_data)
1329 {
1330         int rc;
1331         ENTRY;
1332         EXP_CHECK_MD_OP(exp, enqueue);
1333         MD_COUNTER_INCREMENT(exp->exp_obd, enqueue);
1334         rc = MDP(exp->exp_obd, enqueue)(exp, lock_type, it, lock_mode,
1335                                         data, lockh, lmm, lmmsize,
1336                                         cb_completion, cb_blocking,
1337                                         cb_data);
1338         RETURN(rc);
1339 }
1340
1341 static inline int md_getattr_lock(struct obd_export *exp, struct lustre_id *id,
1342                                   char *filename, int namelen,
1343                                   __u64 valid, unsigned int ea_size,
1344                                   struct ptlrpc_request **request)
1345 {
1346         int rc;
1347         ENTRY;
1348         EXP_CHECK_MD_OP(exp, getattr_lock);
1349         MD_COUNTER_INCREMENT(exp->exp_obd, getattr_lock);
1350         rc = MDP(exp->exp_obd, getattr_lock)(exp, id, filename, namelen,
1351                                              valid, ea_size, request);
1352         RETURN(rc);
1353 }
1354
1355 static inline int md_intent_lock(struct obd_export *exp,
1356                                  struct lustre_id *pid, const char *name,
1357                                  int len, void *lmm, int lmmsize,
1358                                  struct lustre_id *cid, struct lookup_intent *it,
1359                                  int flags, struct ptlrpc_request **reqp,
1360                                  ldlm_blocking_callback cb_blocking)
1361 {
1362         int rc;
1363         ENTRY;
1364         EXP_CHECK_MD_OP(exp, intent_lock);
1365         MD_COUNTER_INCREMENT(exp->exp_obd, intent_lock);
1366         rc = MDP(exp->exp_obd, intent_lock)(exp, pid, name, len,
1367                                             lmm, lmmsize, cid, it, flags,
1368                                             reqp, cb_blocking);
1369         RETURN(rc);
1370 }
1371
1372 static inline int md_link(struct obd_export *exp, struct mdc_op_data *data,
1373                           struct ptlrpc_request **request)
1374 {
1375         int rc;
1376         ENTRY;
1377         EXP_CHECK_MD_OP(exp, link);
1378         MD_COUNTER_INCREMENT(exp->exp_obd, link);
1379         rc = MDP(exp->exp_obd, link)(exp, data, request);
1380         RETURN(rc);
1381 }
1382
1383 static inline int md_rename(struct obd_export *exp, struct mdc_op_data *data,
1384                             const char *old, int oldlen,
1385                             const char *new, int newlen,
1386                             struct ptlrpc_request **request)
1387 {
1388         int rc;
1389         ENTRY;
1390         EXP_CHECK_MD_OP(exp, rename);
1391         MD_COUNTER_INCREMENT(exp->exp_obd, rename);
1392         rc = MDP(exp->exp_obd, rename)(exp, data, old, oldlen, new,
1393                                        newlen, request);
1394         RETURN(rc);
1395 }
1396
1397 static inline int md_setattr(struct obd_export *exp, struct mdc_op_data *data,
1398                              struct iattr *iattr, void *ea, int ealen,
1399                              void *ea2, int ea2len,
1400                              struct ptlrpc_request **request)
1401 {
1402         int rc;
1403         ENTRY;
1404         EXP_CHECK_MD_OP(exp, setattr);
1405         MD_COUNTER_INCREMENT(exp->exp_obd, setattr);
1406         rc = MDP(exp->exp_obd, setattr)(exp, data, iattr, ea, ealen,
1407                                         ea2, ea2len, request);
1408         RETURN(rc);
1409 }
1410
1411 static inline int md_sync(struct obd_export *exp, struct lustre_id *id,
1412                                struct ptlrpc_request **request)
1413 {
1414         int rc;
1415         ENTRY;
1416         EXP_CHECK_MD_OP(exp, sync);
1417         MD_COUNTER_INCREMENT(exp->exp_obd, sync);
1418         rc = MDP(exp->exp_obd, sync)(exp, id, request);
1419         RETURN(rc);
1420 }
1421
1422 static inline int md_readpage(struct obd_export *exp, struct lustre_id *id,
1423                               __u64 offset, struct page *page,
1424                               struct ptlrpc_request **request)
1425 {
1426         int rc;
1427         ENTRY;
1428         EXP_CHECK_MD_OP(exp, readpage);
1429         MD_COUNTER_INCREMENT(exp->exp_obd, readpage);
1430         rc = MDP(exp->exp_obd, readpage)(exp, id, offset, page, request);
1431         RETURN(rc);
1432 }
1433
1434 static inline int md_unlink(struct obd_export *exp, struct mdc_op_data *data,
1435                             struct ptlrpc_request **request)
1436 {
1437         int rc;
1438         ENTRY;
1439         EXP_CHECK_MD_OP(exp, unlink);
1440         MD_COUNTER_INCREMENT(exp->exp_obd, unlink);
1441         rc = MDP(exp->exp_obd, unlink)(exp, data, request);
1442         RETURN(rc);
1443 }
1444
1445 static inline struct obd_device *md_get_real_obd(struct obd_export *exp,
1446                                                  char *name, int len)
1447 {
1448         ENTRY;
1449         if (MDP(exp->exp_obd, get_real_obd) == NULL)
1450                 return exp->exp_obd;
1451         MD_COUNTER_INCREMENT(exp->exp_obd, get_real_obd);
1452         return MDP(exp->exp_obd, get_real_obd)(exp, name, len);
1453 }
1454
1455 static inline int md_valid_attrs(struct obd_export *exp,
1456                                  struct lustre_id *id)
1457 {
1458         ENTRY;
1459         EXP_CHECK_MD_OP(exp, valid_attrs);
1460         MD_COUNTER_INCREMENT(exp->exp_obd, valid_attrs);
1461         return MDP(exp->exp_obd, valid_attrs)(exp, id);
1462 }
1463
1464 static inline int md_req2lustre_md(struct obd_export *exp,
1465                                    struct ptlrpc_request *req,
1466                                    unsigned int offset,
1467                                    struct obd_export *osc_exp,
1468                                    struct lustre_md *md)
1469 {
1470         ENTRY;
1471         EXP_CHECK_MD_OP(exp, req2lustre_md);
1472         MD_COUNTER_INCREMENT(exp->exp_obd, req2lustre_md);
1473         return MDP(exp->exp_obd, req2lustre_md)(exp, req, offset, osc_exp, md);
1474 }
1475
1476 static inline int md_set_open_replay_data(struct obd_export *exp,
1477                                           struct obd_client_handle *och,
1478                                           struct ptlrpc_request *open_req)
1479 {
1480         ENTRY;
1481         EXP_CHECK_MD_OP(exp, set_open_replay_data);
1482         MD_COUNTER_INCREMENT(exp->exp_obd, set_open_replay_data);
1483         return MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req);
1484 }
1485
1486 static inline int md_clear_open_replay_data(struct obd_export *exp,
1487                                             struct obd_client_handle *och)
1488 {
1489         ENTRY;
1490         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
1491         MD_COUNTER_INCREMENT(exp->exp_obd, clear_open_replay_data);
1492         return MDP(exp->exp_obd, clear_open_replay_data)(exp, och);
1493 }
1494
1495 static inline int md_store_inode_generation(struct obd_export *exp,
1496                                             struct ptlrpc_request *req,
1497                                             int reqoff, int repoff)
1498 {
1499         ENTRY;
1500         EXP_CHECK_MD_OP(exp, store_inode_generation);
1501         MD_COUNTER_INCREMENT(exp->exp_obd, store_inode_generation);
1502         return MDP(exp->exp_obd, store_inode_generation)(exp, req,
1503                    reqoff, repoff);
1504 }
1505
1506 static inline int md_set_lock_data(struct obd_export *exp, __u64 *l,
1507                                    void *data)
1508 {
1509         ENTRY;
1510         EXP_CHECK_MD_OP(exp, set_lock_data);
1511         MD_COUNTER_INCREMENT(exp->exp_obd, set_lock_data);
1512         return MDP(exp->exp_obd, set_lock_data)(exp, l, data);
1513 }
1514
1515 /* OBD Metadata Support */
1516
1517 extern int obd_init_caches(void);
1518 extern void obd_cleanup_caches(void);
1519
1520 /* support routines */
1521 extern kmem_cache_t *obdo_cachep;
1522 static inline struct obdo *obdo_alloc(void)
1523 {
1524         struct obdo *oa;
1525
1526         OBD_SLAB_ALLOC(oa, obdo_cachep, GFP_KERNEL,
1527                        sizeof(*oa));
1528         return oa;
1529 }
1530
1531 static inline void obdo_free(struct obdo *oa)
1532 {
1533         if (!oa)
1534                 return;
1535         OBD_SLAB_FREE(oa, obdo_cachep, sizeof(*oa));
1536 }
1537
1538 static inline void obdo2id(struct lustre_id *id,
1539                            struct obdo *oa)
1540 {
1541         LASSERT(oa && id);
1542         id_ino(id) = oa->o_id;
1543         id_fid(id) = oa->o_fid;
1544         id_group(id) = oa->o_mds;
1545         id_gen(id) = oa->o_generation;
1546 }
1547
1548 static inline void id2obdo(struct obdo *oa,
1549                            struct lustre_id *id)
1550 {
1551         LASSERT(oa && id);
1552         oa->o_id = id_ino(id);
1553         oa->o_fid = id_fid(id);
1554         oa->o_mds = id_group(id);
1555         oa->o_generation = id_gen(id);
1556 }
1557
1558 #if !defined(__KERNEL__) || (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
1559 #define to_kdev_t(dev) dev
1560 #define kdev_t_to_nr(dev) dev
1561 #endif
1562
1563 /* I'm as embarrassed about this as you are.
1564  *
1565  * <shaver> // XXX do not look into _superhack with remaining eye
1566  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
1567 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
1568 extern void (*ptlrpc_abort_inflight_superhack)(struct obd_import *imp);
1569
1570 /* sysctl.c */
1571 extern void obd_sysctl_init (void);
1572 extern void obd_sysctl_clean (void);
1573
1574 /* uuid.c  */
1575 typedef __u8 class_uuid_t[16];
1576 //int class_uuid_parse(struct obd_uuid in, class_uuid_t out);
1577 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
1578
1579 /* lustre_peer.c    */
1580 int lustre_uuid_to_peer(char *uuid, __u32 *peer_nal, ptl_nid_t *peer_nid);
1581 int class_add_uuid(char *uuid, __u64 nid, __u32 nal);
1582 int class_del_uuid (char *uuid);
1583 void class_init_uuidlist(void);
1584 void class_exit_uuidlist(void);
1585
1586 /* mea.c */
1587 int mea_name2idx(struct mea *mea, char *name, int namelen);
1588 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
1589
1590 #endif /* __LINUX_OBD_CLASS_H */