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 <libcfs/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,
 662                                struct obd_uuid *uuid)
 663 {
 664         struct obd_device *obd = imp->imp_obd;
 665         int rc;
 666         ENTRY;
 667
 668         OBD_CHECK_DEV_ACTIVE(obd);
 669         OBD_CHECK_OP(obd, del_conn, -EOPNOTSUPP);
 670         OBD_COUNTER_INCREMENT(obd, del_conn);
 671
 672         rc = OBP(obd, del_conn)(imp, uuid);
 673         RETURN(rc);
 674 }
 675
 676
 677 static inline int obd_connect(struct lustre_handle *conn,
 678                               struct obd_device *obd,
 679                               struct obd_uuid *cluuid,
 680                               unsigned long flags)
 681 {
 682         int rc;
 683         ENTRY;
 684
 685         OBD_CHECK_DEV_ACTIVE(obd);
 686         OBD_CHECK_OP(obd, connect, -EOPNOTSUPP);
 687         OBD_COUNTER_INCREMENT(obd, connect);
 688
 689         rc = OBP(obd, connect)(conn, obd, cluuid, flags);
 690         RETURN(rc);
 691 }
 692
 693 static inline int obd_connect_post(struct obd_export *exp,
 694                                    unsigned long flags)
 695 {
 696         int rc;
 697         ENTRY;
 698
 699         OBD_CHECK_DEV_ACTIVE(exp->exp_obd);
 700         if (!OBT(exp->exp_obd) || !OBP((exp->exp_obd), connect_post))
 701                 RETURN(0);
 702         OBD_COUNTER_INCREMENT(exp->exp_obd, connect_post);
 703         rc = OBP(exp->exp_obd, connect_post)(exp, flags);
 704         RETURN(rc);
 705 }
 706
 707 static inline int obd_disconnect(struct obd_export *exp,
 708                                  unsigned long flags)
 709 {
 710         int rc;
 711         ENTRY;
 712
 713         EXP_CHECK_OP(exp, disconnect);
 714         OBD_COUNTER_INCREMENT(exp->exp_obd, disconnect);
 715
 716         rc = OBP(exp->exp_obd, disconnect)(exp, flags);
 717         RETURN(rc);
 718 }
 719
 720 static inline int obd_getready(struct obd_export *exp)
 721 {
 722         int rc;
 723         ENTRY;
 724
 725         if (!OBP(exp->exp_obd, getready))
 726                 RETURN(0);
 727         rc = OBP(exp->exp_obd, getready)(exp);
 728         RETURN(rc);
 729 }
 730
 731 static inline int obd_init_export(struct obd_export *exp)
 732 {
 733         int rc = 0;
 734
 735         ENTRY;
 736         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 737             OBP((exp)->exp_obd, init_export))
 738                 rc = OBP(exp->exp_obd, init_export)(exp);
 739         RETURN(rc);
 740 }
 741
 742 static inline int obd_destroy_export(struct obd_export *exp)
 743 {
 744         ENTRY;
 745         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 746             OBP((exp)->exp_obd, destroy_export))
 747                 OBP(exp->exp_obd, destroy_export)(exp);
 748         RETURN(0);
 749 }
 750
 751 static inline struct dentry *
 752 obd_lvfs_id2dentry(struct obd_export *exp, __u64 ino,
 753                    __u32 gen, __u64 gr)
 754 {
 755         LASSERT(exp->exp_obd);
 756
 757         return lvfs_id2dentry(&exp->exp_obd->obd_lvfs_ctxt,
 758                               ino, gen, gr, exp->exp_obd);
 759 }
 760
 761 #ifndef time_before
 762 #define time_before(t1, t2) ((long)t2 - (long)t1 > 0)
 763 #endif
 764
 765 /* @max_age is the oldest time in jiffies that we accept using a cached data.
 766  * If the cache is older than @max_age we will get a new value from the
 767  * target.  Use a value of "jiffies + HZ" to guarantee freshness. */
 768 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
 769                              unsigned long max_age)
 770 {
 771         int rc = 0;
 772         ENTRY;
 773
 774         if (obd == NULL)
 775                 RETURN(-EINVAL);
 776
 777         OBD_CHECK_OP(obd, statfs, -EOPNOTSUPP);
 778         OBD_COUNTER_INCREMENT(obd, statfs);
 779
 780         CDEBUG(D_SUPER, "osfs %lu, max_age %lu\n", obd->obd_osfs_age, max_age);
 781         if (time_before(obd->obd_osfs_age, max_age)) {
 782                 rc = OBP(obd, statfs)(obd, osfs, max_age);
 783                 if (rc == 0) {
 784                         spin_lock(&obd->obd_osfs_lock);
 785                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
 786                         obd->obd_osfs_age = jiffies;
 787                         spin_unlock(&obd->obd_osfs_lock);
 788                 }
 789         } else {
 790                 CDEBUG(D_SUPER, "using cached obd_statfs data\n");
 791                 spin_lock(&obd->obd_osfs_lock);
 792                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
 793                 spin_unlock(&obd->obd_osfs_lock);
 794         }
 795         RETURN(rc);
 796 }
 797
 798 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
 799                            struct lov_stripe_md *ea, obd_size start,
 800                            obd_size end)
 801 {
 802         int rc;
 803         ENTRY;
 804
 805         OBD_CHECK_OP(exp->exp_obd, sync, -EOPNOTSUPP);
 806         OBD_COUNTER_INCREMENT(exp->exp_obd, sync);
 807
 808         rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end);
 809         RETURN(rc);
 810 }
 811
 812 static inline int obd_punch(struct obd_export *exp, struct obdo *oa,
 813                             struct lov_stripe_md *ea, obd_size start,
 814                             obd_size end, struct obd_trans_info *oti)
 815 {
 816         int rc;
 817         ENTRY;
 818
 819         EXP_CHECK_OP(exp, punch);
 820         OBD_COUNTER_INCREMENT(exp->exp_obd, punch);
 821
 822         rc = OBP(exp->exp_obd, punch)(exp, oa, ea, start, end, oti);
 823         RETURN(rc);
 824 }
 825
 826 static inline int obd_brw(int cmd, struct obd_export *exp, struct obdo *oa,
 827                           struct lov_stripe_md *ea, obd_count oa_bufs,
 828                           struct brw_page *pg, struct obd_trans_info *oti)
 829 {
 830         int rc;
 831         ENTRY;
 832
 833         EXP_CHECK_OP(exp, brw);
 834         OBD_COUNTER_INCREMENT(exp->exp_obd, brw);
 835
 836         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
 837                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
 838                        "or OBD_BRW_CHECK\n");
 839                 LBUG();
 840         }
 841
 842         rc = OBP(exp->exp_obd, brw)(cmd, exp, oa, ea, oa_bufs, pg, oti);
 843         RETURN(rc);
 844 }
 845
 846 static inline int obd_brw_async(int cmd, struct obd_export *exp,
 847                                 struct obdo *oa, struct lov_stripe_md *ea,
 848                                 obd_count oa_bufs, struct brw_page *pg,
 849                                 struct ptlrpc_request_set *set,
 850                                 struct obd_trans_info *oti)
 851 {
 852         int rc;
 853         ENTRY;
 854
 855         EXP_CHECK_OP(exp, brw_async);
 856         OBD_COUNTER_INCREMENT(exp->exp_obd, brw_async);
 857
 858         if (!(cmd & OBD_BRW_RWMASK)) {
 859                 CERROR("obd_brw: cmd must be OBD_BRW_READ or OBD_BRW_WRITE\n");
 860                 LBUG();
 861         }
 862
 863         rc = OBP(exp->exp_obd, brw_async)(cmd, exp, oa, ea, oa_bufs, pg, set,
 864                                           oti);
 865         RETURN(rc);
 866 }
 867
 868 static inline int obd_prep_async_page(struct obd_export *exp,
 869                                       struct lov_stripe_md *lsm,
 870                                       struct lov_oinfo *loi,
 871                                       struct page *page, obd_off offset,
 872                                       struct obd_async_page_ops *ops,
 873                                       void *data, void **res)
 874 {
 875         int ret;
 876         ENTRY;
 877
 878         OBD_CHECK_OP(exp->exp_obd, prep_async_page, -EOPNOTSUPP);
 879         OBD_COUNTER_INCREMENT(exp->exp_obd, prep_async_page);
 880
 881         ret = OBP(exp->exp_obd, prep_async_page)(exp, lsm, loi, page, offset,
 882                                                  ops, data, res);
 883         RETURN(ret);
 884 }
 885
 886 static inline int obd_queue_async_io(struct obd_export *exp,
 887                                      struct lov_stripe_md *lsm,
 888                                      struct lov_oinfo *loi, void *cookie,
 889                                      int cmd, obd_off off, int count,
 890                                      obd_flags brw_flags, obd_flags async_flags)
 891 {
 892         int rc;
 893         ENTRY;
 894
 895         OBD_CHECK_OP(exp->exp_obd, queue_async_io, -EOPNOTSUPP);
 896         OBD_COUNTER_INCREMENT(exp->exp_obd, queue_async_io);
 897         LASSERT(cmd & OBD_BRW_RWMASK);
 898
 899         rc = OBP(exp->exp_obd, queue_async_io)(exp, lsm, loi, cookie, cmd, off,
 900                                                count, brw_flags, async_flags);
 901         RETURN(rc);
 902 }
 903
 904 static inline int obd_set_async_flags(struct obd_export *exp,
 905                                       struct lov_stripe_md *lsm,
 906                                       struct lov_oinfo *loi, void *cookie,
 907                                       obd_flags async_flags)
 908 {
 909         int rc;
 910         ENTRY;
 911
 912         OBD_CHECK_OP(exp->exp_obd, set_async_flags, -EOPNOTSUPP);
 913         OBD_COUNTER_INCREMENT(exp->exp_obd, set_async_flags);
 914
 915         rc = OBP(exp->exp_obd, set_async_flags)(exp, lsm, loi, cookie,
 916                                                 async_flags);
 917         RETURN(rc);
 918 }
 919
 920 static inline int obd_queue_group_io(struct obd_export *exp,
 921                                      struct lov_stripe_md *lsm,
 922                                      struct lov_oinfo *loi,
 923                                      struct obd_io_group *oig,
 924                                      void *cookie, int cmd, obd_off off,
 925                                      int count, obd_flags brw_flags,
 926                                      obd_flags async_flags)
 927 {
 928         int rc;
 929         ENTRY;
 930
 931         OBD_CHECK_OP(exp->exp_obd, queue_group_io, -EOPNOTSUPP);
 932         OBD_COUNTER_INCREMENT(exp->exp_obd, queue_group_io);
 933         LASSERT(cmd & OBD_BRW_RWMASK);
 934
 935         rc = OBP(exp->exp_obd, queue_group_io)(exp, lsm, loi, oig, cookie,
 936                                                cmd, off, count, brw_flags,
 937                                                async_flags);
 938         RETURN(rc);
 939 }
 940
 941 static inline int obd_trigger_group_io(struct obd_export *exp,
 942                                        struct lov_stripe_md *lsm,
 943                                        struct lov_oinfo *loi,
 944                                        struct obd_io_group *oig)
 945 {
 946         int rc;
 947         ENTRY;
 948
 949         OBD_CHECK_OP(exp->exp_obd, trigger_group_io, -EOPNOTSUPP);
 950         OBD_COUNTER_INCREMENT(exp->exp_obd, trigger_group_io);
 951
 952         rc = OBP(exp->exp_obd, trigger_group_io)(exp, lsm, loi, oig);
 953         RETURN(rc);
 954 }
 955
 956 static inline int obd_teardown_async_page(struct obd_export *exp,
 957                                           struct lov_stripe_md *lsm,
 958                                           struct lov_oinfo *loi, void *cookie)
 959 {
 960         int rc;
 961         ENTRY;
 962
 963         OBD_CHECK_OP(exp->exp_obd, teardown_async_page, -EOPNOTSUPP);
 964         OBD_COUNTER_INCREMENT(exp->exp_obd, teardown_async_page);
 965
 966         rc = OBP(exp->exp_obd, teardown_async_page)(exp, lsm, loi, cookie);
 967         RETURN(rc);
 968 }
 969
 970 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
 971                              int objcount, struct obd_ioobj *obj,
 972                              int niocount, struct niobuf_remote *remote,
 973                              struct niobuf_local *local,
 974                              struct obd_trans_info *oti)
 975 {
 976         int rc;
 977         ENTRY;
 978
 979         OBD_CHECK_OP(exp->exp_obd, preprw, -EOPNOTSUPP);
 980         OBD_COUNTER_INCREMENT(exp->exp_obd, preprw);
 981
 982         rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, niocount,
 983                                        remote, local, oti);
 984         RETURN(rc);
 985 }
 986
 987 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
 988                                int objcount, struct obd_ioobj *obj,
 989                                int niocount, struct niobuf_local *local,
 990                                struct obd_trans_info *oti, int rc)
 991 {
 992         ENTRY;
 993
 994         OBD_CHECK_OP(exp->exp_obd, commitrw, -EOPNOTSUPP);
 995         OBD_COUNTER_INCREMENT(exp->exp_obd, commitrw);
 996
 997         rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj, niocount,
 998                                          local, oti, rc);
 999         RETURN(rc);
1000 }
1001
1002 static inline int obd_do_cow(struct obd_export *exp, struct obd_ioobj *obj,
1003                             int objcount,struct niobuf_remote *rnb)
1004 {
1005         int rc;
1006         ENTRY;
1007
1008         /* there are cases when write_extents is not implemented. */
1009         if (!OBP(exp->exp_obd, do_cow))
1010                 RETURN(0);
1011
1012         OBD_COUNTER_INCREMENT(exp->exp_obd, do_cow);
1013
1014         rc = OBP(exp->exp_obd, do_cow)(exp, obj, objcount, rnb);
1015
1016         RETURN(rc);
1017 }
1018
1019 static inline int obd_write_extents(struct obd_export *exp,
1020                                     struct obd_ioobj *obj,
1021                                     int objcount, int niocount,
1022                                     struct niobuf_local *local,
1023                                     int rc)
1024 {
1025         ENTRY;
1026
1027         /* there are cases when write_extents is not implemented. */
1028         if (!OBP(exp->exp_obd, write_extents))
1029                 RETURN(0);
1030
1031         OBD_COUNTER_INCREMENT(exp->exp_obd, write_extents);
1032
1033         rc = OBP(exp->exp_obd, write_extents)(exp, obj, objcount, niocount,
1034                                               local, rc);
1035         RETURN(rc);
1036 }
1037
1038 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1039                                 int len, void *karg, void *uarg)
1040 {
1041         int rc;
1042         ENTRY;
1043
1044         EXP_CHECK_OP(exp, iocontrol);
1045         OBD_COUNTER_INCREMENT(exp->exp_obd, iocontrol);
1046
1047         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1048         RETURN(rc);
1049 }
1050
1051 static inline int obd_enqueue(struct obd_export *exp, struct lov_stripe_md *ea,
1052                               __u32 type, ldlm_policy_data_t *policy,
1053                               __u32 mode, int *flags, void *bl_cb, void *cp_cb,
1054                               void *gl_cb, void *data, __u32 lvb_len,
1055                               void *lvb_swabber, struct lustre_handle *lockh)
1056 {
1057         int rc;
1058         ENTRY;
1059
1060         EXP_CHECK_OP(exp, enqueue);
1061         OBD_COUNTER_INCREMENT(exp->exp_obd, enqueue);
1062
1063         rc = OBP(exp->exp_obd, enqueue)(exp, ea, type, policy, mode, flags,
1064                                         bl_cb, cp_cb, gl_cb, data, lvb_len,
1065                                         lvb_swabber, lockh);
1066         RETURN(rc);
1067 }
1068
1069 static inline int obd_match(struct obd_export *exp, struct lov_stripe_md *ea,
1070                             __u32 type, ldlm_policy_data_t *policy, __u32 mode,
1071                             int *flags, void *data, struct lustre_handle *lockh)
1072 {
1073         int rc;
1074         ENTRY;
1075
1076         EXP_CHECK_OP(exp, match);
1077         OBD_COUNTER_INCREMENT(exp->exp_obd, match);
1078
1079         rc = OBP(exp->exp_obd, match)(exp, ea, type, policy, mode, flags, data,
1080                                       lockh);
1081         RETURN(rc);
1082 }
1083
1084 static inline int obd_change_cbdata(struct obd_export *exp,
1085                                     struct lov_stripe_md *lsm,
1086                                     ldlm_iterator_t it, void *data)
1087 {
1088         int rc;
1089         ENTRY;
1090
1091         EXP_CHECK_OP(exp, change_cbdata);
1092         OBD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata);
1093
1094         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1095         RETURN(rc);
1096 }
1097
1098 static inline int obd_cancel(struct obd_export *exp,
1099                              struct lov_stripe_md *ea, __u32 mode,
1100                              struct lustre_handle *lockh)
1101 {
1102         int rc;
1103         ENTRY;
1104
1105         EXP_CHECK_OP(exp, cancel);
1106         OBD_COUNTER_INCREMENT(exp->exp_obd, cancel);
1107
1108         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1109         RETURN(rc);
1110 }
1111
1112 static inline int obd_cancel_unused(struct obd_export *exp,
1113                                     struct lov_stripe_md *ea, int flags,
1114                                     void *opaque)
1115 {
1116         int rc;
1117         ENTRY;
1118
1119         EXP_CHECK_OP(exp, cancel_unused);
1120         OBD_COUNTER_INCREMENT(exp->exp_obd, cancel_unused);
1121
1122         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1123         RETURN(rc);
1124 }
1125
1126
1127 static inline int obd_san_preprw(int cmd, struct obd_export *exp,
1128                                  struct obdo *oa,
1129                                  int objcount, struct obd_ioobj *obj,
1130                                  int niocount, struct niobuf_remote *remote)
1131 {
1132         int rc;
1133
1134         EXP_CHECK_OP(exp, preprw);
1135         OBD_COUNTER_INCREMENT(exp->exp_obd, preprw);
1136
1137         rc = OBP(exp->exp_obd, san_preprw)(cmd, exp, oa, objcount, obj,
1138                                            niocount, remote);
1139         class_export_put(exp);
1140         return(rc);
1141 }
1142
1143 static inline int obd_pin(struct obd_export *exp, obd_id ino, __u32 gen,
1144                           int type, struct obd_client_handle *handle, int flag)
1145 {
1146         int rc;
1147
1148         EXP_CHECK_OP(exp, pin);
1149         OBD_COUNTER_INCREMENT(exp->exp_obd, pin);
1150
1151         rc = OBP(exp->exp_obd, pin)(exp, ino, gen, type, handle, flag);
1152         return(rc);
1153 }
1154
1155 static inline int obd_unpin(struct obd_export *exp,
1156                             struct obd_client_handle *handle, int flag)
1157 {
1158         int rc;
1159
1160         EXP_CHECK_OP(exp, unpin);
1161         OBD_COUNTER_INCREMENT(exp->exp_obd, unpin);
1162
1163         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1164         return(rc);
1165 }
1166
1167
1168 static inline void obd_import_event(struct obd_device *obd,
1169                                     struct obd_import *imp,
1170                                     enum obd_import_event event)
1171 {
1172         if (obd->obd_set_up && OBP(obd, import_event)) {
1173                 OBD_COUNTER_INCREMENT(obd, import_event);
1174                 OBP(obd, import_event)(obd, imp, event);
1175         }
1176 }
1177
1178 static inline int obd_llog_connect(struct obd_export *exp,
1179                                         struct llogd_conn_body *body)
1180 {
1181         ENTRY;
1182         EXP_CHECK_OP(exp, llog_connect);
1183         return OBP(exp->exp_obd, llog_connect)(exp, body);
1184 }
1185
1186 static inline int obd_notify(struct obd_device *obd, struct obd_device *watched,
1187                              int active, void *data)
1188 {
1189         if (!obd->obd_set_up) {
1190                 CERROR("obd %s not set up\n", obd->obd_name);
1191                 return -EINVAL;
1192         }
1193
1194         if (!OBP(obd, notify)) {
1195                 CERROR("obd %s has no notify handler\n", obd->obd_name);
1196                 return -ENOSYS;
1197         }
1198
1199         OBD_COUNTER_INCREMENT(obd, notify);
1200         return OBP(obd, notify)(obd, watched, active, data);
1201 }
1202
1203 static inline int obd_register_observer(struct obd_device *obd,
1204                                         struct obd_device *observer)
1205 {
1206         ENTRY;
1207         if (obd->obd_observer && observer)
1208                 RETURN(-EALREADY);
1209         obd->obd_observer = observer;
1210         RETURN(0);
1211 }
1212
1213 static inline int obd_init_ea_size(struct obd_export *exp, int size, int size2)
1214 {
1215         int rc;
1216         ENTRY;
1217         LASSERT(OBP(exp->exp_obd, init_ea_size) != NULL);
1218         OBD_COUNTER_INCREMENT(exp->exp_obd, init_ea_size);
1219         rc = OBP(exp->exp_obd, init_ea_size)(exp, size, size2);
1220         RETURN(rc);
1221 }
1222
1223 static inline int md_getstatus(struct obd_export *exp, struct lustre_id *id)
1224 {
1225         int rc;
1226
1227         EXP_CHECK_MD_OP(exp, getstatus);
1228         MD_COUNTER_INCREMENT(exp->exp_obd, getstatus);
1229         rc = MDP(exp->exp_obd, getstatus)(exp, id);
1230         RETURN(rc);
1231 }
1232
1233 static inline int md_delete_inode(struct obd_export *exp,
1234                                   struct lustre_id *id)
1235 {
1236         int rc;
1237         ENTRY;
1238
1239         if (MDP(exp->exp_obd, delete_inode) == NULL)
1240                 RETURN(0);
1241
1242         MD_COUNTER_INCREMENT(exp->exp_obd, delete_inode);
1243         rc = MDP(exp->exp_obd, delete_inode)(exp, id);
1244         RETURN(rc);
1245 }
1246
1247 static inline int md_getattr(struct obd_export *exp, struct lustre_id *id,
1248                              __u64 valid, unsigned int ea_size,
1249                              struct ptlrpc_request **request)
1250 {
1251         int rc;
1252         ENTRY;
1253         EXP_CHECK_MD_OP(exp, getattr);
1254         MD_COUNTER_INCREMENT(exp->exp_obd, getattr);
1255         rc = MDP(exp->exp_obd, getattr)(exp, id, valid, ea_size, request);
1256         RETURN(rc);
1257 }
1258
1259 static inline int md_change_cbdata(struct obd_export *exp, struct lustre_id *id,
1260                                    ldlm_iterator_t it, void *data)
1261 {
1262         int rc;
1263         ENTRY;
1264         EXP_CHECK_MD_OP(exp, change_cbdata);
1265         MD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata);
1266         rc = MDP(exp->exp_obd, change_cbdata)(exp, id, it, data);
1267         RETURN(rc);
1268 }
1269
1270 static inline int md_change_cbdata_name(struct obd_export *exp,
1271                                         struct lustre_id *id, char *name,
1272                                         int namelen, struct lustre_id *id2,
1273                                         ldlm_iterator_t it, void *data)
1274 {
1275         int rc;
1276
1277         /* this seem to be needed only for lmv. */
1278         if (!MDP(exp->exp_obd, change_cbdata_name))
1279                 return 0;
1280
1281         ENTRY;
1282
1283         MD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata_name);
1284         rc = MDP(exp->exp_obd, change_cbdata_name)(exp, id, name, namelen,
1285                                                    id2, it, data);
1286         RETURN(rc);
1287 }
1288
1289 static inline int md_close(struct obd_export *exp, struct obdo *obdo,
1290                            struct obd_client_handle *och,
1291                            struct ptlrpc_request **request)
1292 {
1293         int rc;
1294         ENTRY;
1295         EXP_CHECK_MD_OP(exp, close);
1296         MD_COUNTER_INCREMENT(exp->exp_obd, close);
1297         rc = MDP(exp->exp_obd, close)(exp, obdo, och, request);
1298         RETURN(rc);
1299 }
1300
1301 static inline int md_create(struct obd_export *exp, struct mdc_op_data *op_data,
1302                             const void *data, int datalen, int mode,
1303                             __u32 uid, __u32 gid, __u64 rdev,
1304                             struct ptlrpc_request **request)
1305 {
1306         int rc;
1307         ENTRY;
1308         EXP_CHECK_MD_OP(exp, create);
1309         MD_COUNTER_INCREMENT(exp->exp_obd, create);
1310         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1311                                        uid, gid, rdev, request);
1312         RETURN(rc);
1313 }
1314
1315 static inline int md_done_writing(struct obd_export *exp, struct obdo *obdo)
1316 {
1317         int rc;
1318         ENTRY;
1319         EXP_CHECK_MD_OP(exp, done_writing);
1320         MD_COUNTER_INCREMENT(exp->exp_obd, done_writing);
1321         rc = MDP(exp->exp_obd, done_writing)(exp, obdo);
1322         RETURN(rc);
1323 }
1324
1325 static inline int md_enqueue(struct obd_export *exp, int lock_type,
1326                              struct lookup_intent *it, int lock_mode,
1327                              struct mdc_op_data *data,
1328                              struct lustre_handle *lockh,
1329                              void *lmm, int lmmsize,
1330                              ldlm_completion_callback cb_completion,
1331                              ldlm_blocking_callback cb_blocking,
1332                              void *cb_data)
1333 {
1334         int rc;
1335         ENTRY;
1336         EXP_CHECK_MD_OP(exp, enqueue);
1337         MD_COUNTER_INCREMENT(exp->exp_obd, enqueue);
1338         rc = MDP(exp->exp_obd, enqueue)(exp, lock_type, it, lock_mode,
1339                                         data, lockh, lmm, lmmsize,
1340                                         cb_completion, cb_blocking,
1341                                         cb_data);
1342         RETURN(rc);
1343 }
1344
1345 static inline int md_getattr_lock(struct obd_export *exp, struct lustre_id *id,
1346                                   char *filename, int namelen,
1347                                   __u64 valid, unsigned int ea_size,
1348                                   struct ptlrpc_request **request)
1349 {
1350         int rc;
1351         ENTRY;
1352         EXP_CHECK_MD_OP(exp, getattr_lock);
1353         MD_COUNTER_INCREMENT(exp->exp_obd, getattr_lock);
1354         rc = MDP(exp->exp_obd, getattr_lock)(exp, id, filename, namelen,
1355                                              valid, ea_size, request);
1356         RETURN(rc);
1357 }
1358
1359 static inline int md_intent_lock(struct obd_export *exp,
1360                                  struct lustre_id *pid, const char *name,
1361                                  int len, void *lmm, int lmmsize,
1362                                  struct lustre_id *cid, struct lookup_intent *it,
1363                                  int flags, struct ptlrpc_request **reqp,
1364                                  ldlm_blocking_callback cb_blocking)
1365 {
1366         int rc;
1367         ENTRY;
1368         EXP_CHECK_MD_OP(exp, intent_lock);
1369         MD_COUNTER_INCREMENT(exp->exp_obd, intent_lock);
1370         rc = MDP(exp->exp_obd, intent_lock)(exp, pid, name, len,
1371                                             lmm, lmmsize, cid, it, flags,
1372                                             reqp, cb_blocking);
1373         RETURN(rc);
1374 }
1375
1376 static inline int md_link(struct obd_export *exp, struct mdc_op_data *data,
1377                           struct ptlrpc_request **request)
1378 {
1379         int rc;
1380         ENTRY;
1381         EXP_CHECK_MD_OP(exp, link);
1382         MD_COUNTER_INCREMENT(exp->exp_obd, link);
1383         rc = MDP(exp->exp_obd, link)(exp, data, request);
1384         RETURN(rc);
1385 }
1386
1387 static inline int md_rename(struct obd_export *exp, struct mdc_op_data *data,
1388                             const char *old, int oldlen,
1389                             const char *new, int newlen,
1390                             struct ptlrpc_request **request)
1391 {
1392         int rc;
1393         ENTRY;
1394         EXP_CHECK_MD_OP(exp, rename);
1395         MD_COUNTER_INCREMENT(exp->exp_obd, rename);
1396         rc = MDP(exp->exp_obd, rename)(exp, data, old, oldlen, new,
1397                                        newlen, request);
1398         RETURN(rc);
1399 }
1400
1401 static inline int md_setattr(struct obd_export *exp, struct mdc_op_data *data,
1402                              struct iattr *iattr, void *ea, int ealen,
1403                              void *ea2, int ea2len,
1404                              struct ptlrpc_request **request)
1405 {
1406         int rc;
1407         ENTRY;
1408         EXP_CHECK_MD_OP(exp, setattr);
1409         MD_COUNTER_INCREMENT(exp->exp_obd, setattr);
1410         rc = MDP(exp->exp_obd, setattr)(exp, data, iattr, ea, ealen,
1411                                         ea2, ea2len, request);
1412         RETURN(rc);
1413 }
1414
1415 static inline int md_sync(struct obd_export *exp, struct lustre_id *id,
1416                                struct ptlrpc_request **request)
1417 {
1418         int rc;
1419         ENTRY;
1420         EXP_CHECK_MD_OP(exp, sync);
1421         MD_COUNTER_INCREMENT(exp->exp_obd, sync);
1422         rc = MDP(exp->exp_obd, sync)(exp, id, request);
1423         RETURN(rc);
1424 }
1425
1426 static inline int md_readpage(struct obd_export *exp, struct lustre_id *id,
1427                               __u64 offset, struct page *page,
1428                               struct ptlrpc_request **request)
1429 {
1430         int rc;
1431         ENTRY;
1432         EXP_CHECK_MD_OP(exp, readpage);
1433         MD_COUNTER_INCREMENT(exp->exp_obd, readpage);
1434         rc = MDP(exp->exp_obd, readpage)(exp, id, offset, page, request);
1435         RETURN(rc);
1436 }
1437
1438 static inline int md_unlink(struct obd_export *exp, struct mdc_op_data *data,
1439                             struct ptlrpc_request **request)
1440 {
1441         int rc;
1442         ENTRY;
1443         EXP_CHECK_MD_OP(exp, unlink);
1444         MD_COUNTER_INCREMENT(exp->exp_obd, unlink);
1445         rc = MDP(exp->exp_obd, unlink)(exp, data, request);
1446         RETURN(rc);
1447 }
1448
1449 static inline struct obd_device *md_get_real_obd(struct obd_export *exp,
1450                                                  struct lustre_id *fid)
1451 {
1452         ENTRY;
1453         if (MDP(exp->exp_obd, get_real_obd) == NULL)
1454                 return exp->exp_obd;
1455         MD_COUNTER_INCREMENT(exp->exp_obd, get_real_obd);
1456         return MDP(exp->exp_obd, get_real_obd)(exp, fid);
1457 }
1458
1459 static inline int md_valid_attrs(struct obd_export *exp,
1460                                  struct lustre_id *id)
1461 {
1462         ENTRY;
1463         EXP_CHECK_MD_OP(exp, valid_attrs);
1464         MD_COUNTER_INCREMENT(exp->exp_obd, valid_attrs);
1465         return MDP(exp->exp_obd, valid_attrs)(exp, id);
1466 }
1467
1468 static inline int md_req2lustre_md(struct obd_export *exp,
1469                                    struct ptlrpc_request *req,
1470                                    unsigned int offset,
1471                                    struct obd_export *osc_exp,
1472                                    struct lustre_md *md)
1473 {
1474         ENTRY;
1475         EXP_CHECK_MD_OP(exp, req2lustre_md);
1476         MD_COUNTER_INCREMENT(exp->exp_obd, req2lustre_md);
1477         return MDP(exp->exp_obd, req2lustre_md)(exp, req, offset, osc_exp, md);
1478 }
1479
1480 static inline int md_set_open_replay_data(struct obd_export *exp,
1481                                           struct obd_client_handle *och,
1482                                           struct ptlrpc_request *open_req)
1483 {
1484         ENTRY;
1485         EXP_CHECK_MD_OP(exp, set_open_replay_data);
1486         MD_COUNTER_INCREMENT(exp->exp_obd, set_open_replay_data);
1487         return MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req);
1488 }
1489
1490 static inline int md_clear_open_replay_data(struct obd_export *exp,
1491                                             struct obd_client_handle *och)
1492 {
1493         ENTRY;
1494         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
1495         MD_COUNTER_INCREMENT(exp->exp_obd, clear_open_replay_data);
1496         return MDP(exp->exp_obd, clear_open_replay_data)(exp, och);
1497 }
1498
1499 static inline int md_store_inode_generation(struct obd_export *exp,
1500                                             struct ptlrpc_request *req,
1501                                             int reqoff, int repoff)
1502 {
1503         ENTRY;
1504         EXP_CHECK_MD_OP(exp, store_inode_generation);
1505         MD_COUNTER_INCREMENT(exp->exp_obd, store_inode_generation);
1506         return MDP(exp->exp_obd, store_inode_generation)(exp, req,
1507                    reqoff, repoff);
1508 }
1509
1510 static inline int md_set_lock_data(struct obd_export *exp, __u64 *l,
1511                                    void *data)
1512 {
1513         ENTRY;
1514         EXP_CHECK_MD_OP(exp, set_lock_data);
1515         MD_COUNTER_INCREMENT(exp->exp_obd, set_lock_data);
1516         return MDP(exp->exp_obd, set_lock_data)(exp, l, data);
1517 }
1518
1519 /* OBD Metadata Support */
1520
1521 extern int obd_init_caches(void);
1522 extern void obd_cleanup_caches(void);
1523
1524 /* support routines */
1525 extern kmem_cache_t *obdo_cachep;
1526 static inline struct obdo *obdo_alloc(void)
1527 {
1528         struct obdo *oa;
1529
1530         OBD_SLAB_ALLOC(oa, obdo_cachep, GFP_KERNEL,
1531                        sizeof(*oa));
1532         return oa;
1533 }
1534
1535 static inline void obdo_free(struct obdo *oa)
1536 {
1537         if (!oa)
1538                 return;
1539         OBD_SLAB_FREE(oa, obdo_cachep, sizeof(*oa));
1540 }
1541
1542 static inline void obdo2id(struct lustre_id *id,
1543                            struct obdo *oa)
1544 {
1545         LASSERT(oa && id);
1546         id_ino(id) = oa->o_id;
1547         id_fid(id) = oa->o_fid;
1548         id_group(id) = oa->o_mds;
1549         id_gen(id) = oa->o_generation;
1550 }
1551
1552 static inline void id2obdo(struct obdo *oa,
1553                            struct lustre_id *id)
1554 {
1555         LASSERT(oa && id);
1556         oa->o_id = id_ino(id);
1557         oa->o_fid = id_fid(id);
1558         oa->o_mds = id_group(id);
1559         oa->o_generation = id_gen(id);
1560 }
1561
1562 #if !defined(__KERNEL__) || (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
1563 #define to_kdev_t(dev) dev
1564 #define kdev_t_to_nr(dev) dev
1565 #endif
1566
1567 /* I'm as embarrassed about this as you are.
1568  *
1569  * <shaver> // XXX do not look into _superhack with remaining eye
1570  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
1571 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
1572 extern void (*ptlrpc_abort_inflight_superhack)(struct obd_import *imp);
1573
1574 /* sysctl.c */
1575 extern void obd_sysctl_init (void);
1576 extern void obd_sysctl_clean (void);
1577
1578 /* uuid.c  */
1579 typedef __u8 class_uuid_t[16];
1580 //int class_uuid_parse(struct obd_uuid in, class_uuid_t out);
1581 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
1582
1583 /* lustre_peer.c    */
1584 int lustre_uuid_to_peer(char *uuid, __u32 *peer_nal, ptl_nid_t *peer_nid);
1585 int class_add_uuid(char *uuid, __u64 nid, __u32 nal);
1586 int class_del_uuid (char *uuid);
1587 void class_init_uuidlist(void);
1588 void class_exit_uuidlist(void);
1589
1590 /* mea.c */
1591 int mea_name2idx(struct mea *mea, char *name, int namelen);
1592 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
1593
1594 #endif /* __LINUX_OBD_CLASS_H */