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
  93 int class_config_process_llog(struct llog_ctxt *ctxt, char *name,
  94                               struct config_llog_instance *cfg);
  95 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
  96                            struct config_llog_instance *cfg);
  97
  98 struct lustre_profile {
  99         struct list_head lp_list;
 100         char *lp_profile;
 101         char *lp_lov;
 102         char *lp_lmv;
 103 };
 104
 105 struct lustre_profile *class_get_profile(char * prof);
 106 void class_del_profile(char *prof);
 107
 108 #define class_export_rpc_get(exp)                                       \
 109 ({                                                                      \
 110         atomic_inc(&(exp)->exp_rpc_count);                              \
 111         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",    \
 112                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 113         class_export_get(exp);                                          \
 114 })
 115
 116 #define class_export_rpc_put(exp)                                       \
 117 ({                                                                      \
 118         atomic_dec(&(exp)->exp_rpc_count);                              \
 119         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",    \
 120                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 121         class_export_put(exp);                                          \
 122 })
 123
 124 #define class_export_get(exp)                                                  \
 125 ({                                                                             \
 126         struct obd_export *exp_ = exp;                                         \
 127         atomic_inc(&exp_->exp_refcount);                                       \
 128         CDEBUG(D_INFO, "GETting export %p : new refcount %d\n", exp_,          \
 129                atomic_read(&exp_->exp_refcount));                              \
 130         exp_;                                                                  \
 131 })
 132
 133 #define class_export_put(exp)                                                  \
 134 do {                                                                           \
 135         LASSERT((exp) != NULL);                                                \
 136         CDEBUG(D_INFO, "PUTting export %p : new refcount %d\n", (exp),         \
 137                atomic_read(&(exp)->exp_refcount) - 1);                         \
 138         LASSERT(atomic_read(&(exp)->exp_refcount) > 0);                        \
 139         LASSERT(atomic_read(&(exp)->exp_refcount) < 0x5a5a5a);                 \
 140         __class_export_put(exp);                                               \
 141 } while (0)
 142
 143 void __class_export_put(struct obd_export *);
 144 struct obd_export *class_new_export(struct obd_device *obddev);
 145 void class_unlink_export(struct obd_export *exp);
 146
 147 struct obd_import *class_import_get(struct obd_import *);
 148 void class_import_put(struct obd_import *);
 149 struct obd_import *class_new_import(void);
 150 void class_destroy_import(struct obd_import *exp);
 151
 152 struct obd_type *class_get_type(char *name);
 153 void class_put_type(struct obd_type *type);
 154 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 155                   struct obd_uuid *cluuid);
 156 int class_disconnect(struct obd_export *exp, unsigned long flags);
 157 void class_disconnect_exports(struct obd_device *obddev, unsigned long flags);
 158 void class_disconnect_stale_exports(struct obd_device *obddev, unsigned long flags);
 159
 160 /* generic operations shared by various OBD types */
 161 int class_multi_setup(struct obd_device *obddev, uint32_t len, void *data);
 162 int class_multi_cleanup(struct obd_device *obddev);
 163
 164 /* obdo.c */
 165 #ifdef __KERNEL__
 166 void obdo_from_iattr(struct obdo *oa, struct iattr *attr, unsigned ia_valid);
 167 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, obd_valid valid);
 168 void obdo_from_inode(struct obdo *dst, struct inode *src, obd_valid valid);
 169 void obdo_refresh_inode(struct inode *dst, struct obdo *src, obd_valid valid);
 170 void obdo_to_inode(struct inode *dst, struct obdo *src, obd_valid valid);
 171 #endif
 172 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_valid valid);
 173 int obdo_cmp_md(struct obdo *dst, struct obdo *src, obd_valid compare);
 174 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
 175
 176 #define OBT(dev)        (dev)->obd_type
 177 #define OBP(dev, op)    (dev)->obd_type->typ_ops->o_ ## op
 178 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
 179 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 180
 181 /* Ensure obd_setup: used for cleanup which must be called
 182    while obd is stopping */
 183 #define OBD_CHECK_DEV(obd)                                      \
 184 do {                                                            \
 185         if (!(obd)) {                                           \
 186                 CERROR("NULL device\n");                        \
 187                 RETURN(-ENODEV);                                \
 188         }                                                       \
 189 } while (0)
 190
 191 #define OBD_CHECK_DEV_STOPPING(obd)                             \
 192 do {                                                            \
 193         OBD_CHECK_DEV(obd);                                     \
 194         if (!(obd)->obd_set_up) {                               \
 195                 CERROR("Device %d not setup\n",                 \
 196                        (obd)->obd_minor);                       \
 197                 RETURN(-ENODEV);                                \
 198         }                                                       \
 199                                                                 \
 200         if (!(obd)->obd_stopping) {                             \
 201                 CERROR("Device %d not stopping\n",              \
 202                        (obd)->obd_minor);                       \
 203                 RETURN(-ENODEV);                                \
 204         }                                                       \
 205 } while (0)
 206
 207 /* ensure obd_setup and !obd_stopping */
 208 #define OBD_CHECK_DEV_ACTIVE(obd)                               \
 209 do {                                                            \
 210         OBD_CHECK_DEV(obd);                                     \
 211         if (!(obd)->obd_set_up || (obd)->obd_stopping) {        \
 212                 CERROR("Device %d not setup\n",                 \
 213                        (obd)->obd_minor);                       \
 214                 RETURN(-ENODEV);                                \
 215         }                                                       \
 216 } while (0)
 217
 218
 219 #ifdef LPROCFS
 220 #define OBD_COUNTER_OFFSET(op)                                  \
 221         ((offsetof(struct obd_ops, o_ ## op) -                  \
 222           offsetof(struct obd_ops, o_iocontrol))                \
 223          / sizeof(((struct obd_ops *)(0))->o_iocontrol))
 224
 225 #define OBD_COUNTER_INCREMENT(obd, op)                          \
 226         if ((obd)->obd_stats != NULL) {                         \
 227                 unsigned int coffset;                           \
 228                 coffset = (unsigned int)(obd)->obd_cntr_base +  \
 229                         OBD_COUNTER_OFFSET(op);                 \
 230                 LASSERT(coffset < (obd)->obd_stats->ls_num);    \
 231                 lprocfs_counter_incr((obd)->obd_stats, coffset);\
 232         }
 233
 234 #define MD_COUNTER_OFFSET(op)                                  \
 235         ((offsetof(struct md_ops, m_ ## op) -                  \
 236           offsetof(struct md_ops, m_getstatus))                \
 237          / sizeof(((struct md_ops *)(0))->m_getstatus))
 238
 239 #define MD_COUNTER_INCREMENT(obd, op)                           \
 240         if ((obd)->md_stats != NULL) {                          \
 241                 unsigned int coffset;                           \
 242                 coffset = (unsigned int)(obd)->md_cntr_base +   \
 243                         MD_COUNTER_OFFSET(op);                  \
 244                 LASSERT(coffset < (obd)->md_stats->ls_num);     \
 245                 lprocfs_counter_incr((obd)->md_stats, coffset); \
 246         }
 247
 248 #else
 249 #define OBD_COUNTER_OFFSET(op)
 250 #define OBD_COUNTER_INCREMENT(obd, op)
 251 #define MD_COUNTER_INCREMENT(obd, op)
 252 #endif
 253
 254 #define OBD_CHECK_MD_OP(obd, op, err)                           \
 255 do {                                                            \
 256         if (!OBT(obd) || !MDP((obd), op)) {\
 257                 if (err)                                        \
 258                         CERROR("md_" #op ": dev %s/%d no operation\n", \
 259                                obd->obd_name, obd->obd_minor);  \
 260                 RETURN(err);                                    \
 261         }                                                       \
 262 } while (0)
 263
 264 #define EXP_CHECK_MD_OP(exp, op)                                \
 265 do {                                                            \
 266         if ((exp) == NULL) {                                    \
 267                 CERROR("obd_" #op ": NULL export\n");           \
 268                 portals_debug_dumplog();                        \
 269                 RETURN(-ENODEV);                                \
 270         }                                                       \
 271         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 272                 CERROR("obd_" #op ": cleaned up obd\n");        \
 273                 RETURN(-EOPNOTSUPP);                            \
 274         }                                                       \
 275         if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
 276                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 277                        (exp)->exp_obd->obd_name,                \
 278                        (exp)->exp_obd->obd_minor);              \
 279                 RETURN(-EOPNOTSUPP);                            \
 280         }                                                       \
 281 } while (0)
 282
 283 #define OBD_CHECK_OP(obd, op, err)                              \
 284 do {                                                            \
 285         if (!OBT(obd) || !OBP((obd), op)) {\
 286                 if (err)                                        \
 287                         CERROR("obd_" #op ": dev %s/%d no operation\n", \
 288                                obd->obd_name, obd->obd_minor);  \
 289                 RETURN(err);                                    \
 290         }                                                       \
 291 } while (0)
 292
 293 #define EXP_CHECK_OP(exp, op)                                   \
 294 do {                                                            \
 295         if ((exp) == NULL) {                                    \
 296                 CERROR("obd_" #op ": NULL export\n");           \
 297                 portals_debug_dumplog();                        \
 298                 RETURN(-ENODEV);                                \
 299         }                                                       \
 300         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 301                 CERROR("obd_" #op ": cleaned up obd\n");        \
 302                 RETURN(-EOPNOTSUPP);                            \
 303         }                                                       \
 304         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 305                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 306                        (exp)->exp_obd->obd_name,                \
 307                        (exp)->exp_obd->obd_minor);              \
 308                 RETURN(-EOPNOTSUPP);                            \
 309         }                                                       \
 310 } while (0)
 311
 312 #define CTXT_CHECK_OP(ctxt, op, err)                            \
 313 do {                                                            \
 314         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {        \
 315                 if (err)                                        \
 316                         CERROR("lop_" #op ": dev %d no operation\n",    \
 317                                ctxt->loc_obd->obd_minor);               \
 318                 RETURN(err);                                    \
 319         }                                                       \
 320 } while (0)
 321
 322 static inline int obd_get_info(struct obd_export *exp, __u32 keylen,
 323                                void *key, __u32 *vallen, void *val)
 324 {
 325         int rc;
 326         ENTRY;
 327
 328         EXP_CHECK_OP(exp, get_info);
 329         OBD_COUNTER_INCREMENT(exp->exp_obd, get_info);
 330
 331         rc = OBP(exp->exp_obd, get_info)(exp, keylen, key, vallen, val);
 332         RETURN(rc);
 333 }
 334
 335 static inline int obd_set_info(struct obd_export *exp, obd_count keylen,
 336                                void *key, obd_count vallen, void *val)
 337 {
 338         int rc;
 339         ENTRY;
 340
 341         EXP_CHECK_OP(exp, set_info);
 342         OBD_COUNTER_INCREMENT(exp->exp_obd, set_info);
 343
 344         rc = OBP(exp->exp_obd, set_info)(exp, keylen, key, vallen, val);
 345         RETURN(rc);
 346 }
 347
 348 static inline int obd_setup(struct obd_device *obd, int datalen, void *data)
 349 {
 350         int rc;
 351         ENTRY;
 352
 353         OBD_CHECK_OP(obd, setup, -EOPNOTSUPP);
 354         OBD_COUNTER_INCREMENT(obd, setup);
 355
 356         rc = OBP(obd, setup)(obd, datalen, data);
 357         RETURN(rc);
 358 }
 359
 360 static inline int obd_precleanup(struct obd_device *obd, int flags)
 361 {
 362         int rc;
 363         ENTRY;
 364
 365         OBD_CHECK_OP(obd, precleanup, 0);
 366         OBD_COUNTER_INCREMENT(obd, precleanup);
 367
 368         rc = OBP(obd, precleanup)(obd, flags);
 369         RETURN(rc);
 370 }
 371
 372 static inline int obd_cleanup(struct obd_device *obd, int flags)
 373 {
 374         int rc;
 375         ENTRY;
 376
 377         OBD_CHECK_DEV_STOPPING(obd);
 378         OBD_CHECK_OP(obd, cleanup, 0);
 379         OBD_COUNTER_INCREMENT(obd, cleanup);
 380
 381         rc = OBP(obd, cleanup)(obd, flags);
 382         RETURN(rc);
 383 }
 384
 385 static inline int
 386 obd_process_config(struct obd_device *obd, int datalen, void *data)
 387 {
 388         int rc;
 389         ENTRY;
 390
 391         OBD_CHECK_OP(obd, process_config, -EOPNOTSUPP);
 392         OBD_COUNTER_INCREMENT(obd, process_config);
 393
 394         rc = OBP(obd, process_config)(obd, datalen, data);
 395         RETURN(rc);
 396 }
 397
 398 /* Pack an in-memory MD struct for storage on disk.
 399  * Returns +ve size of packed MD (0 for free), or -ve error.
 400  *
 401  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 402  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 403  * If @*disk_tgt == NULL, it will be allocated
 404  */
 405 static inline int obd_packmd(struct obd_export *exp,
 406                              struct lov_mds_md **disk_tgt,
 407                              struct lov_stripe_md *mem_src)
 408 {
 409         int rc;
 410         ENTRY;
 411
 412         EXP_CHECK_OP(exp, packmd);
 413         OBD_COUNTER_INCREMENT(exp->exp_obd, packmd);
 414
 415         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 416         RETURN(rc);
 417 }
 418
 419 static inline int obd_size_diskmd(struct obd_export *exp,
 420                                   struct lov_stripe_md *mem_src)
 421 {
 422         return obd_packmd(exp, NULL, mem_src);
 423 }
 424
 425 /* helper functions */
 426 static inline int obd_alloc_diskmd(struct obd_export *exp,
 427                                    struct lov_mds_md **disk_tgt)
 428 {
 429         LASSERT(disk_tgt);
 430         LASSERT(*disk_tgt == NULL);
 431         return obd_packmd(exp, disk_tgt, NULL);
 432 }
 433
 434 static inline int obd_free_diskmd(struct obd_export *exp,
 435                                   struct lov_mds_md **disk_tgt)
 436 {
 437         LASSERT(disk_tgt);
 438         LASSERT(*disk_tgt);
 439         return obd_packmd(exp, disk_tgt, NULL);
 440 }
 441
 442 /* Unpack an MD struct from disk to in-memory format.
 443  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 444  *
 445  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 446  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 447  * If @*mem_tgt == NULL, it will be allocated
 448  */
 449 static inline int obd_unpackmd(struct obd_export *exp,
 450                                struct lov_stripe_md **mem_tgt,
 451                                struct lov_mds_md *disk_src,
 452                                int disk_len)
 453 {
 454         int rc;
 455         ENTRY;
 456
 457         EXP_CHECK_OP(exp, unpackmd);
 458         OBD_COUNTER_INCREMENT(exp->exp_obd, unpackmd);
 459
 460         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 461         RETURN(rc);
 462 }
 463
 464 /* helper functions */
 465 static inline int obd_alloc_memmd(struct obd_export *exp,
 466                                   struct lov_stripe_md **mem_tgt)
 467 {
 468         LASSERT(mem_tgt);
 469         LASSERT(*mem_tgt == NULL);
 470         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 471 }
 472
 473 static inline int obd_free_memmd(struct obd_export *exp,
 474                                  struct lov_stripe_md **mem_tgt)
 475 {
 476         LASSERT(mem_tgt);
 477         LASSERT(*mem_tgt);
 478         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 479 }
 480
 481 static inline int obd_revalidate_md(struct obd_export *exp, struct obdo *obdo,
 482                                     struct lov_stripe_md *ea,
 483                                     struct obd_trans_info *oti)
 484 {
 485         int rc;
 486         ENTRY;
 487
 488         EXP_CHECK_OP(exp, revalidate_md);
 489         OBD_COUNTER_INCREMENT(exp->exp_obd, revalidate_md);
 490
 491         rc = OBP(exp->exp_obd, revalidate_md)(exp, obdo, ea, oti);
 492         RETURN(rc);
 493 }
 494
 495 static inline int obd_create(struct obd_export *exp, struct obdo *obdo,
 496                              struct lov_stripe_md **ea,
 497                              struct obd_trans_info *oti)
 498 {
 499         int rc;
 500         ENTRY;
 501
 502         EXP_CHECK_OP(exp, create);
 503         OBD_COUNTER_INCREMENT(exp->exp_obd, create);
 504
 505         rc = OBP(exp->exp_obd, create)(exp, obdo, ea, oti);
 506         RETURN(rc);
 507 }
 508
 509 static inline int obd_destroy(struct obd_export *exp, struct obdo *obdo,
 510                               struct lov_stripe_md *ea,
 511                               struct obd_trans_info *oti)
 512 {
 513         int rc;
 514         ENTRY;
 515
 516         EXP_CHECK_OP(exp, destroy);
 517         OBD_COUNTER_INCREMENT(exp->exp_obd, destroy);
 518
 519         rc = OBP(exp->exp_obd, destroy)(exp, obdo, ea, oti);
 520         RETURN(rc);
 521 }
 522
 523 static inline int obd_getattr(struct obd_export *exp, struct obdo *obdo,
 524                               struct lov_stripe_md *ea)
 525 {
 526         int rc;
 527         ENTRY;
 528
 529         EXP_CHECK_OP(exp, getattr);
 530         OBD_COUNTER_INCREMENT(exp->exp_obd, getattr);
 531
 532         rc = OBP(exp->exp_obd, getattr)(exp, obdo, ea);
 533         RETURN(rc);
 534 }
 535
 536 static inline int obd_getattr_async(struct obd_export *exp,
 537                                     struct obdo *obdo, struct lov_stripe_md *ea,
 538                                     struct ptlrpc_request_set *set)
 539 {
 540         int rc;
 541         ENTRY;
 542
 543         EXP_CHECK_OP(exp, getattr);
 544         OBD_COUNTER_INCREMENT(exp->exp_obd, getattr);
 545
 546         rc = OBP(exp->exp_obd, getattr_async)(exp, obdo, ea, set);
 547         RETURN(rc);
 548 }
 549
 550 static inline int obd_setattr(struct obd_export *exp, struct obdo *obdo,
 551                               struct lov_stripe_md *ea,
 552                               struct obd_trans_info *oti)
 553 {
 554         int rc;
 555         ENTRY;
 556
 557         EXP_CHECK_OP(exp, setattr);
 558         OBD_COUNTER_INCREMENT(exp->exp_obd, setattr);
 559
 560         rc = OBP(exp->exp_obd, setattr)(exp, obdo, ea, oti);
 561         RETURN(rc);
 562 }
 563 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 564                                int priority)
 565 {
 566         struct obd_device *obd = imp->imp_obd;
 567         int rc;
 568         ENTRY;
 569
 570         OBD_CHECK_DEV_ACTIVE(obd);
 571         OBD_CHECK_OP(obd, add_conn, -EOPNOTSUPP);
 572         OBD_COUNTER_INCREMENT(obd, add_conn);
 573
 574         rc = OBP(obd, add_conn)(imp, uuid, priority);
 575         RETURN(rc);
 576 }
 577
 578 static inline int obd_del_conn(struct obd_import *imp,
 579                                struct obd_uuid *uuid)
 580 {
 581         struct obd_device *obd = imp->imp_obd;
 582         int rc;
 583         ENTRY;
 584
 585         OBD_CHECK_DEV_ACTIVE(obd);
 586         OBD_CHECK_OP(obd, del_conn, -EOPNOTSUPP);
 587         OBD_COUNTER_INCREMENT(obd, del_conn);
 588
 589         rc = OBP(obd, del_conn)(imp, uuid);
 590         RETURN(rc);
 591 }
 592
 593
 594 static inline int obd_connect(struct lustre_handle *conn,
 595                               struct obd_device *obd,
 596                               struct obd_uuid *cluuid,
 597                               struct obd_connect_data *data,
 598                               unsigned long flags)
 599 {
 600         int rc;
 601         ENTRY;
 602
 603         OBD_CHECK_DEV_ACTIVE(obd);
 604         OBD_CHECK_OP(obd, connect, -EOPNOTSUPP);
 605         OBD_COUNTER_INCREMENT(obd, connect);
 606
 607         rc = OBP(obd, connect)(conn, obd, cluuid, data, flags);
 608         RETURN(rc);
 609 }
 610
 611 static inline int obd_connect_post(struct obd_export *exp,
 612                                    unsigned initial,
 613                                    unsigned long flags)
 614 {
 615         int rc;
 616         ENTRY;
 617
 618         OBD_CHECK_DEV_ACTIVE(exp->exp_obd);
 619         if (!OBT(exp->exp_obd) || !OBP((exp->exp_obd), connect_post))
 620                 RETURN(0);
 621         OBD_COUNTER_INCREMENT(exp->exp_obd, connect_post);
 622         rc = OBP(exp->exp_obd, connect_post)(exp, initial, flags);
 623         RETURN(rc);
 624 }
 625
 626 static inline int obd_disconnect(struct obd_export *exp,
 627                                  unsigned long flags)
 628 {
 629         int rc;
 630         ENTRY;
 631
 632         EXP_CHECK_OP(exp, disconnect);
 633         OBD_COUNTER_INCREMENT(exp->exp_obd, disconnect);
 634
 635         rc = OBP(exp->exp_obd, disconnect)(exp, flags);
 636         RETURN(rc);
 637 }
 638
 639 static inline int obd_getready(struct obd_export *exp)
 640 {
 641         int rc;
 642         ENTRY;
 643
 644         if (!OBP(exp->exp_obd, getready))
 645                 RETURN(0);
 646         rc = OBP(exp->exp_obd, getready)(exp);
 647         RETURN(rc);
 648 }
 649
 650 static inline int obd_init_export(struct obd_export *exp)
 651 {
 652         int rc = 0;
 653
 654         ENTRY;
 655         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 656             OBP((exp)->exp_obd, init_export))
 657                 rc = OBP(exp->exp_obd, init_export)(exp);
 658         RETURN(rc);
 659 }
 660
 661 static inline int obd_destroy_export(struct obd_export *exp)
 662 {
 663         ENTRY;
 664         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 665             OBP((exp)->exp_obd, destroy_export))
 666                 OBP(exp->exp_obd, destroy_export)(exp);
 667         RETURN(0);
 668 }
 669
 670 static inline struct dentry *
 671 obd_lvfs_id2dentry(struct obd_export *exp, __u64 ino,
 672                    __u32 gen, __u64 gr)
 673 {
 674         LASSERT(exp->exp_obd);
 675
 676         return lvfs_id2dentry(&exp->exp_obd->obd_lvfs_ctxt,
 677                               ino, gen, gr, exp->exp_obd);
 678 }
 679
 680 #ifndef time_before
 681 #define time_before(t1, t2) ((long)t2 - (long)t1 > 0)
 682 #endif
 683
 684 /* @max_age is the oldest time in jiffies that we accept using a cached data.
 685  * If the cache is older than @max_age we will get a new value from the
 686  * target.  Use a value of "jiffies + HZ" to guarantee freshness. */
 687 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
 688                              unsigned long max_age)
 689 {
 690         int rc = 0;
 691         ENTRY;
 692
 693         if (obd == NULL)
 694                 RETURN(-EINVAL);
 695
 696         OBD_CHECK_OP(obd, statfs, -EOPNOTSUPP);
 697         OBD_COUNTER_INCREMENT(obd, statfs);
 698
 699         CDEBUG(D_SUPER, "osfs %lu, max_age %lu\n", obd->obd_osfs_age, max_age);
 700         if (time_before(obd->obd_osfs_age, max_age)) {
 701                 rc = OBP(obd, statfs)(obd, osfs, max_age);
 702                 if (rc == 0) {
 703                         spin_lock(&obd->obd_osfs_lock);
 704                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
 705                         obd->obd_osfs_age = jiffies;
 706                         spin_unlock(&obd->obd_osfs_lock);
 707                 }
 708         } else {
 709                 CDEBUG(D_SUPER, "using cached obd_statfs data\n");
 710                 spin_lock(&obd->obd_osfs_lock);
 711                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
 712                 spin_unlock(&obd->obd_osfs_lock);
 713         }
 714         RETURN(rc);
 715 }
 716
 717 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
 718                            struct lov_stripe_md *ea, obd_size start,
 719                            obd_size end)
 720 {
 721         int rc;
 722         ENTRY;
 723
 724         OBD_CHECK_OP(exp->exp_obd, sync, -EOPNOTSUPP);
 725         OBD_COUNTER_INCREMENT(exp->exp_obd, sync);
 726
 727         rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end);
 728         RETURN(rc);
 729 }
 730
 731 static inline int obd_punch(struct obd_export *exp, struct obdo *oa,
 732                             struct lov_stripe_md *ea, obd_size start,
 733                             obd_size end, struct obd_trans_info *oti)
 734 {
 735         int rc;
 736         ENTRY;
 737
 738         EXP_CHECK_OP(exp, punch);
 739         OBD_COUNTER_INCREMENT(exp->exp_obd, punch);
 740
 741         rc = OBP(exp->exp_obd, punch)(exp, oa, ea, start, end, oti);
 742         RETURN(rc);
 743 }
 744
 745 static inline int obd_brw(int cmd, struct obd_export *exp, struct obdo *oa,
 746                           struct lov_stripe_md *ea, obd_count oa_bufs,
 747                           struct brw_page *pg, struct obd_trans_info *oti)
 748 {
 749         int rc;
 750         ENTRY;
 751
 752         EXP_CHECK_OP(exp, brw);
 753         OBD_COUNTER_INCREMENT(exp->exp_obd, brw);
 754
 755         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
 756                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
 757                        "or OBD_BRW_CHECK\n");
 758                 LBUG();
 759         }
 760
 761         rc = OBP(exp->exp_obd, brw)(cmd, exp, oa, ea, oa_bufs, pg, oti);
 762         RETURN(rc);
 763 }
 764
 765 static inline int obd_brw_async(int cmd, struct obd_export *exp,
 766                                 struct obdo *oa, struct lov_stripe_md *ea,
 767                                 obd_count oa_bufs, struct brw_page *pg,
 768                                 struct ptlrpc_request_set *set,
 769                                 struct obd_trans_info *oti)
 770 {
 771         int rc;
 772         ENTRY;
 773
 774         EXP_CHECK_OP(exp, brw_async);
 775         OBD_COUNTER_INCREMENT(exp->exp_obd, brw_async);
 776
 777         if (!(cmd & OBD_BRW_RWMASK)) {
 778                 CERROR("obd_brw: cmd must be OBD_BRW_READ or OBD_BRW_WRITE\n");
 779                 LBUG();
 780         }
 781
 782         rc = OBP(exp->exp_obd, brw_async)(cmd, exp, oa, ea, oa_bufs, pg, set,
 783                                           oti);
 784         RETURN(rc);
 785 }
 786
 787 static inline int obd_prep_async_page(struct obd_export *exp,
 788                                       struct lov_stripe_md *lsm,
 789                                       struct lov_oinfo *loi,
 790                                       struct page *page, obd_off offset,
 791                                       struct obd_async_page_ops *ops,
 792                                       void *data, void **res)
 793 {
 794         int ret;
 795         ENTRY;
 796
 797         OBD_CHECK_OP(exp->exp_obd, prep_async_page, -EOPNOTSUPP);
 798         OBD_COUNTER_INCREMENT(exp->exp_obd, prep_async_page);
 799
 800         ret = OBP(exp->exp_obd, prep_async_page)(exp, lsm, loi, page, offset,
 801                                                  ops, data, res);
 802         RETURN(ret);
 803 }
 804
 805 static inline int obd_queue_async_io(struct obd_export *exp,
 806                                      struct lov_stripe_md *lsm,
 807                                      struct lov_oinfo *loi, void *cookie,
 808                                      int cmd, obd_off off, int count,
 809                                      obd_flags brw_flags, obd_flags async_flags)
 810 {
 811         int rc;
 812         ENTRY;
 813
 814         OBD_CHECK_OP(exp->exp_obd, queue_async_io, -EOPNOTSUPP);
 815         OBD_COUNTER_INCREMENT(exp->exp_obd, queue_async_io);
 816         LASSERT(cmd & OBD_BRW_RWMASK);
 817
 818         rc = OBP(exp->exp_obd, queue_async_io)(exp, lsm, loi, cookie, cmd, off,
 819                                                count, brw_flags, async_flags);
 820         RETURN(rc);
 821 }
 822
 823 static inline int obd_set_async_flags(struct obd_export *exp,
 824                                       struct lov_stripe_md *lsm,
 825                                       struct lov_oinfo *loi, void *cookie,
 826                                       obd_flags async_flags)
 827 {
 828         int rc;
 829         ENTRY;
 830
 831         OBD_CHECK_OP(exp->exp_obd, set_async_flags, -EOPNOTSUPP);
 832         OBD_COUNTER_INCREMENT(exp->exp_obd, set_async_flags);
 833
 834         rc = OBP(exp->exp_obd, set_async_flags)(exp, lsm, loi, cookie,
 835                                                 async_flags);
 836         RETURN(rc);
 837 }
 838
 839 static inline int obd_queue_group_io(struct obd_export *exp,
 840                                      struct lov_stripe_md *lsm,
 841                                      struct lov_oinfo *loi,
 842                                      struct obd_io_group *oig,
 843                                      void *cookie, int cmd, obd_off off,
 844                                      int count, obd_flags brw_flags,
 845                                      obd_flags async_flags)
 846 {
 847         int rc;
 848         ENTRY;
 849
 850         OBD_CHECK_OP(exp->exp_obd, queue_group_io, -EOPNOTSUPP);
 851         OBD_COUNTER_INCREMENT(exp->exp_obd, queue_group_io);
 852         LASSERT(cmd & OBD_BRW_RWMASK);
 853
 854         rc = OBP(exp->exp_obd, queue_group_io)(exp, lsm, loi, oig, cookie,
 855                                                cmd, off, count, brw_flags,
 856                                                async_flags);
 857         RETURN(rc);
 858 }
 859
 860 static inline int obd_trigger_group_io(struct obd_export *exp,
 861                                        struct lov_stripe_md *lsm,
 862                                        struct lov_oinfo *loi,
 863                                        struct obd_io_group *oig)
 864 {
 865         int rc;
 866         ENTRY;
 867
 868         OBD_CHECK_OP(exp->exp_obd, trigger_group_io, -EOPNOTSUPP);
 869         OBD_COUNTER_INCREMENT(exp->exp_obd, trigger_group_io);
 870
 871         rc = OBP(exp->exp_obd, trigger_group_io)(exp, lsm, loi, oig);
 872         RETURN(rc);
 873 }
 874
 875 static inline int obd_teardown_async_page(struct obd_export *exp,
 876                                           struct lov_stripe_md *lsm,
 877                                           struct lov_oinfo *loi, void *cookie)
 878 {
 879         int rc;
 880         ENTRY;
 881
 882         OBD_CHECK_OP(exp->exp_obd, teardown_async_page, -EOPNOTSUPP);
 883         OBD_COUNTER_INCREMENT(exp->exp_obd, teardown_async_page);
 884
 885         rc = OBP(exp->exp_obd, teardown_async_page)(exp, lsm, loi, cookie);
 886         RETURN(rc);
 887 }
 888
 889 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
 890                              int objcount, struct obd_ioobj *obj,
 891                              int niocount, struct niobuf_remote *remote,
 892                              struct niobuf_local *local,
 893                              struct obd_trans_info *oti)
 894 {
 895         int rc;
 896         ENTRY;
 897
 898         OBD_CHECK_OP(exp->exp_obd, preprw, -EOPNOTSUPP);
 899         OBD_COUNTER_INCREMENT(exp->exp_obd, preprw);
 900
 901         rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, niocount,
 902                                        remote, local, oti);
 903         RETURN(rc);
 904 }
 905
 906 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
 907                                int objcount, struct obd_ioobj *obj,
 908                                int niocount, struct niobuf_local *local,
 909                                struct obd_trans_info *oti, int rc)
 910 {
 911         ENTRY;
 912
 913         OBD_CHECK_OP(exp->exp_obd, commitrw, -EOPNOTSUPP);
 914         OBD_COUNTER_INCREMENT(exp->exp_obd, commitrw);
 915
 916         rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj, niocount,
 917                                          local, oti, rc);
 918         RETURN(rc);
 919 }
 920
 921 static inline int obd_do_cow(struct obd_export *exp, struct obd_ioobj *obj,
 922                             int objcount,struct niobuf_remote *rnb)
 923 {
 924         int rc;
 925         ENTRY;
 926
 927         /* there are cases when write_extents is not implemented. */
 928         if (!OBP(exp->exp_obd, do_cow))
 929                 RETURN(0);
 930
 931         OBD_COUNTER_INCREMENT(exp->exp_obd, do_cow);
 932
 933         rc = OBP(exp->exp_obd, do_cow)(exp, obj, objcount, rnb);
 934
 935         RETURN(rc);
 936 }
 937
 938 static inline int obd_write_extents(struct obd_export *exp,
 939                                     struct obd_ioobj *obj,
 940                                     int objcount, int niocount,
 941                                     struct niobuf_local *local,
 942                                     int rc)
 943 {
 944         ENTRY;
 945
 946         /* there are cases when write_extents is not implemented. */
 947         if (!OBP(exp->exp_obd, write_extents))
 948                 RETURN(0);
 949
 950         OBD_COUNTER_INCREMENT(exp->exp_obd, write_extents);
 951
 952         rc = OBP(exp->exp_obd, write_extents)(exp, obj, objcount, niocount,
 953                                               local, rc);
 954         RETURN(rc);
 955 }
 956
 957 static inline int obd_adjust_kms(struct obd_export *exp,
 958                                  struct lov_stripe_md *lsm,
 959                                  obd_off size, int shrink)
 960 {
 961         int rc;
 962         ENTRY;
 963
 964         OBD_CHECK_OP(exp->exp_obd, adjust_kms, -EOPNOTSUPP);
 965         OBD_COUNTER_INCREMENT(exp->exp_obd, adjust_kms);
 966
 967         rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
 968         RETURN(rc);
 969 }
 970
 971 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
 972                                 int len, void *karg, void *uarg)
 973 {
 974         int rc;
 975         ENTRY;
 976
 977         EXP_CHECK_OP(exp, iocontrol);
 978         OBD_COUNTER_INCREMENT(exp->exp_obd, iocontrol);
 979
 980         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
 981         RETURN(rc);
 982 }
 983
 984 static inline int obd_enqueue(struct obd_export *exp, struct lov_stripe_md *ea,
 985                               __u32 type, ldlm_policy_data_t *policy,
 986                               __u32 mode, int *flags, void *bl_cb, void *cp_cb,
 987                               void *gl_cb, void *data, __u32 lvb_len,
 988                               void *lvb_swabber, struct lustre_handle *lockh)
 989 {
 990         int rc;
 991         ENTRY;
 992
 993         EXP_CHECK_OP(exp, enqueue);
 994         OBD_COUNTER_INCREMENT(exp->exp_obd, enqueue);
 995
 996         rc = OBP(exp->exp_obd, enqueue)(exp, ea, type, policy, mode, flags,
 997                                         bl_cb, cp_cb, gl_cb, data, lvb_len,
 998                                         lvb_swabber, lockh);
 999         RETURN(rc);
1000 }
1001
1002 static inline int obd_match(struct obd_export *exp, struct lov_stripe_md *ea,
1003                             __u32 type, ldlm_policy_data_t *policy, __u32 mode,
1004                             int *flags, void *data, struct lustre_handle *lockh)
1005 {
1006         int rc;
1007         ENTRY;
1008
1009         EXP_CHECK_OP(exp, match);
1010         OBD_COUNTER_INCREMENT(exp->exp_obd, match);
1011
1012         rc = OBP(exp->exp_obd, match)(exp, ea, type, policy, mode, flags, data,
1013                                       lockh);
1014         RETURN(rc);
1015 }
1016
1017 static inline int obd_change_cbdata(struct obd_export *exp,
1018                                     struct lov_stripe_md *lsm,
1019                                     ldlm_iterator_t it, void *data)
1020 {
1021         int rc;
1022         ENTRY;
1023
1024         EXP_CHECK_OP(exp, change_cbdata);
1025         OBD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata);
1026
1027         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1028         RETURN(rc);
1029 }
1030
1031 static inline int obd_cancel(struct obd_export *exp,
1032                              struct lov_stripe_md *ea, __u32 mode,
1033                              struct lustre_handle *lockh)
1034 {
1035         int rc;
1036         ENTRY;
1037
1038         EXP_CHECK_OP(exp, cancel);
1039         OBD_COUNTER_INCREMENT(exp->exp_obd, cancel);
1040
1041         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1042         RETURN(rc);
1043 }
1044
1045 static inline int obd_cancel_unused(struct obd_export *exp,
1046                                     struct lov_stripe_md *ea, int flags,
1047                                     void *opaque)
1048 {
1049         int rc;
1050         ENTRY;
1051
1052         EXP_CHECK_OP(exp, cancel_unused);
1053         OBD_COUNTER_INCREMENT(exp->exp_obd, cancel_unused);
1054
1055         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1056         RETURN(rc);
1057 }
1058
1059
1060 static inline int obd_san_preprw(int cmd, struct obd_export *exp,
1061                                  struct obdo *oa,
1062                                  int objcount, struct obd_ioobj *obj,
1063                                  int niocount, struct niobuf_remote *remote)
1064 {
1065         int rc;
1066
1067         EXP_CHECK_OP(exp, preprw);
1068         OBD_COUNTER_INCREMENT(exp->exp_obd, preprw);
1069
1070         rc = OBP(exp->exp_obd, san_preprw)(cmd, exp, oa, objcount, obj,
1071                                            niocount, remote);
1072         class_export_put(exp);
1073         return(rc);
1074 }
1075
1076 static inline int obd_pin(struct obd_export *exp, obd_id ino, __u32 gen,
1077                           int type, struct obd_client_handle *handle, int flag)
1078 {
1079         int rc;
1080
1081         EXP_CHECK_OP(exp, pin);
1082         OBD_COUNTER_INCREMENT(exp->exp_obd, pin);
1083
1084         rc = OBP(exp->exp_obd, pin)(exp, ino, gen, type, handle, flag);
1085         return(rc);
1086 }
1087
1088 static inline int obd_unpin(struct obd_export *exp,
1089                             struct obd_client_handle *handle, int flag)
1090 {
1091         int rc;
1092
1093         EXP_CHECK_OP(exp, unpin);
1094         OBD_COUNTER_INCREMENT(exp->exp_obd, unpin);
1095
1096         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1097         return(rc);
1098 }
1099
1100
1101 static inline void obd_import_event(struct obd_device *obd,
1102                                     struct obd_import *imp,
1103                                     enum obd_import_event event)
1104 {
1105         if (!obd) {
1106                 CERROR("NULL device\n");
1107                 EXIT;
1108                 return;
1109         }
1110         if (obd->obd_set_up && OBP(obd, import_event)) {
1111                 OBD_COUNTER_INCREMENT(obd, import_event);
1112                 OBP(obd, import_event)(obd, imp, event);
1113         }
1114 }
1115
1116 static inline int obd_llog_connect(struct obd_export *exp,
1117                                         struct llogd_conn_body *body)
1118 {
1119         ENTRY;
1120         EXP_CHECK_OP(exp, llog_connect);
1121         return OBP(exp->exp_obd, llog_connect)(exp, body);
1122 }
1123
1124 static inline int obd_notify(struct obd_device *obd, struct obd_device *watched,
1125                              int active, void *data)
1126 {
1127         OBD_CHECK_DEV(obd);
1128         if (!obd->obd_set_up) {
1129                 CERROR("obd %s not set up\n", obd->obd_name);
1130                 return -EINVAL;
1131         }
1132
1133         if (!OBP(obd, notify)) {
1134                 CERROR("obd %s has no notify handler\n", obd->obd_name);
1135                 return -ENOSYS;
1136         }
1137
1138         OBD_COUNTER_INCREMENT(obd, notify);
1139         return OBP(obd, notify)(obd, watched, active, data);
1140 }
1141
1142 static inline int obd_register_observer(struct obd_device *obd,
1143                                         struct obd_device *observer)
1144 {
1145         ENTRY;
1146         OBD_CHECK_DEV(obd);
1147         if (obd->obd_observer && observer)
1148                 RETURN(-EALREADY);
1149         obd->obd_observer = observer;
1150         RETURN(0);
1151 }
1152
1153 static inline int obd_init_ea_size(struct obd_export *exp, int size, int size2)
1154 {
1155         int rc;
1156         ENTRY;
1157         LASSERT(OBP(exp->exp_obd, init_ea_size) != NULL);
1158         OBD_COUNTER_INCREMENT(exp->exp_obd, init_ea_size);
1159         rc = OBP(exp->exp_obd, init_ea_size)(exp, size, size2);
1160         RETURN(rc);
1161 }
1162
1163 static inline int md_getstatus(struct obd_export *exp, struct lustre_id *id)
1164 {
1165         int rc;
1166
1167         EXP_CHECK_MD_OP(exp, getstatus);
1168         MD_COUNTER_INCREMENT(exp->exp_obd, getstatus);
1169         rc = MDP(exp->exp_obd, getstatus)(exp, id);
1170         RETURN(rc);
1171 }
1172
1173 static inline int md_delete_inode(struct obd_export *exp,
1174                                   struct lustre_id *id)
1175 {
1176         int rc;
1177         ENTRY;
1178
1179         if (MDP(exp->exp_obd, delete_inode) == NULL)
1180                 RETURN(0);
1181
1182         MD_COUNTER_INCREMENT(exp->exp_obd, delete_inode);
1183         rc = MDP(exp->exp_obd, delete_inode)(exp, id);
1184         RETURN(rc);
1185 }
1186
1187 static inline int md_getattr(struct obd_export *exp, struct lustre_id *id,
1188                              __u64 valid, const char *ea_name, int ea_namelen,
1189                              unsigned int ea_size, struct ptlrpc_request **request)
1190 {
1191         int rc;
1192         ENTRY;
1193         EXP_CHECK_MD_OP(exp, getattr);
1194         MD_COUNTER_INCREMENT(exp->exp_obd, getattr);
1195         rc = MDP(exp->exp_obd, getattr)(exp, id, valid, ea_name, ea_namelen, ea_size, request);
1196         RETURN(rc);
1197 }
1198
1199 static inline int md_change_cbdata(struct obd_export *exp, struct lustre_id *id,
1200                                    ldlm_iterator_t it, void *data)
1201 {
1202         int rc;
1203         ENTRY;
1204         EXP_CHECK_MD_OP(exp, change_cbdata);
1205         MD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata);
1206         rc = MDP(exp->exp_obd, change_cbdata)(exp, id, it, data);
1207         RETURN(rc);
1208 }
1209
1210 static inline int md_change_cbdata_name(struct obd_export *exp,
1211                                         struct lustre_id *id, char *name,
1212                                         int namelen, struct lustre_id *id2,
1213                                         ldlm_iterator_t it, void *data)
1214 {
1215         int rc;
1216
1217         /* this seem to be needed only for lmv. */
1218         if (!MDP(exp->exp_obd, change_cbdata_name))
1219                 return 0;
1220
1221         ENTRY;
1222
1223         MD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata_name);
1224         rc = MDP(exp->exp_obd, change_cbdata_name)(exp, id, name, namelen,
1225                                                    id2, it, data);
1226         RETURN(rc);
1227 }
1228
1229 static inline int md_close(struct obd_export *exp, struct obdo *obdo,
1230                            struct obd_client_handle *och,
1231                            struct ptlrpc_request **request)
1232 {
1233         int rc;
1234         ENTRY;
1235         EXP_CHECK_MD_OP(exp, close);
1236         MD_COUNTER_INCREMENT(exp->exp_obd, close);
1237         rc = MDP(exp->exp_obd, close)(exp, obdo, och, request);
1238         RETURN(rc);
1239 }
1240
1241 static inline int md_create(struct obd_export *exp, struct mdc_op_data *op_data,
1242                             const void *data, int datalen, int mode,
1243                             __u32 uid, __u32 gid, __u64 rdev,
1244                             struct ptlrpc_request **request)
1245 {
1246         int rc;
1247         ENTRY;
1248         EXP_CHECK_MD_OP(exp, create);
1249         MD_COUNTER_INCREMENT(exp->exp_obd, create);
1250         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1251                                        uid, gid, rdev, request);
1252         RETURN(rc);
1253 }
1254
1255 static inline int md_done_writing(struct obd_export *exp, struct obdo *obdo)
1256 {
1257         int rc;
1258         ENTRY;
1259         EXP_CHECK_MD_OP(exp, done_writing);
1260         MD_COUNTER_INCREMENT(exp->exp_obd, done_writing);
1261         rc = MDP(exp->exp_obd, done_writing)(exp, obdo);
1262         RETURN(rc);
1263 }
1264
1265 static inline int md_enqueue(struct obd_export *exp, int lock_type,
1266                              struct lookup_intent *it, int lock_mode,
1267                              struct mdc_op_data *data,
1268                              struct lustre_handle *lockh,
1269                              void *lmm, int lmmsize,
1270                              ldlm_completion_callback cb_completion,
1271                              ldlm_blocking_callback cb_blocking,
1272                              void *cb_data)
1273 {
1274         int rc;
1275         ENTRY;
1276         EXP_CHECK_MD_OP(exp, enqueue);
1277         MD_COUNTER_INCREMENT(exp->exp_obd, enqueue);
1278         rc = MDP(exp->exp_obd, enqueue)(exp, lock_type, it, lock_mode,
1279                                         data, lockh, lmm, lmmsize,
1280                                         cb_completion, cb_blocking,
1281                                         cb_data);
1282         RETURN(rc);
1283 }
1284
1285 static inline int md_getattr_lock(struct obd_export *exp, struct lustre_id *id,
1286                                   char *filename, int namelen,
1287                                   __u64 valid, unsigned int ea_size,
1288                                   struct ptlrpc_request **request)
1289 {
1290         int rc;
1291         ENTRY;
1292         EXP_CHECK_MD_OP(exp, getattr_lock);
1293         MD_COUNTER_INCREMENT(exp->exp_obd, getattr_lock);
1294         rc = MDP(exp->exp_obd, getattr_lock)(exp, id, filename, namelen,
1295                                              valid, ea_size, request);
1296         RETURN(rc);
1297 }
1298
1299 static inline int md_intent_lock(struct obd_export *exp,
1300                                  struct lustre_id *pid, const char *name,
1301                                  int len, void *lmm, int lmmsize,
1302                                  struct lustre_id *cid, struct lookup_intent *it,
1303                                  int flags, struct ptlrpc_request **reqp,
1304                                  ldlm_blocking_callback cb_blocking)
1305 {
1306         int rc;
1307         ENTRY;
1308         EXP_CHECK_MD_OP(exp, intent_lock);
1309         MD_COUNTER_INCREMENT(exp->exp_obd, intent_lock);
1310         rc = MDP(exp->exp_obd, intent_lock)(exp, pid, name, len,
1311                                             lmm, lmmsize, cid, it, flags,
1312                                             reqp, cb_blocking);
1313         RETURN(rc);
1314 }
1315
1316 static inline int md_link(struct obd_export *exp, struct mdc_op_data *data,
1317                           struct ptlrpc_request **request)
1318 {
1319         int rc;
1320         ENTRY;
1321         EXP_CHECK_MD_OP(exp, link);
1322         MD_COUNTER_INCREMENT(exp->exp_obd, link);
1323         rc = MDP(exp->exp_obd, link)(exp, data, request);
1324         RETURN(rc);
1325 }
1326
1327 static inline int md_rename(struct obd_export *exp, struct mdc_op_data *data,
1328                             const char *old, int oldlen,
1329                             const char *new, int newlen,
1330                             struct ptlrpc_request **request)
1331 {
1332         int rc;
1333         ENTRY;
1334         EXP_CHECK_MD_OP(exp, rename);
1335         MD_COUNTER_INCREMENT(exp->exp_obd, rename);
1336         rc = MDP(exp->exp_obd, rename)(exp, data, old, oldlen, new,
1337                                        newlen, request);
1338         RETURN(rc);
1339 }
1340
1341 static inline int md_setattr(struct obd_export *exp, struct mdc_op_data *data,
1342                              struct iattr *iattr, void *ea, int ealen,
1343                              void *ea2, int ea2len,
1344                              struct ptlrpc_request **request)
1345 {
1346         int rc;
1347         ENTRY;
1348         EXP_CHECK_MD_OP(exp, setattr);
1349         MD_COUNTER_INCREMENT(exp->exp_obd, setattr);
1350         rc = MDP(exp->exp_obd, setattr)(exp, data, iattr, ea, ealen,
1351                                         ea2, ea2len, request);
1352         RETURN(rc);
1353 }
1354
1355 static inline int md_sync(struct obd_export *exp, struct lustre_id *id,
1356                                struct ptlrpc_request **request)
1357 {
1358         int rc;
1359         ENTRY;
1360         EXP_CHECK_MD_OP(exp, sync);
1361         MD_COUNTER_INCREMENT(exp->exp_obd, sync);
1362         rc = MDP(exp->exp_obd, sync)(exp, id, request);
1363         RETURN(rc);
1364 }
1365
1366 static inline int md_readpage(struct obd_export *exp, struct lustre_id *id,
1367                               __u64 offset, struct page *page,
1368                               struct ptlrpc_request **request)
1369 {
1370         int rc;
1371         ENTRY;
1372         EXP_CHECK_MD_OP(exp, readpage);
1373         MD_COUNTER_INCREMENT(exp->exp_obd, readpage);
1374         rc = MDP(exp->exp_obd, readpage)(exp, id, offset, page, request);
1375         RETURN(rc);
1376 }
1377
1378 static inline int md_unlink(struct obd_export *exp, struct mdc_op_data *data,
1379                             struct ptlrpc_request **request)
1380 {
1381         int rc;
1382         ENTRY;
1383         EXP_CHECK_MD_OP(exp, unlink);
1384         MD_COUNTER_INCREMENT(exp->exp_obd, unlink);
1385         rc = MDP(exp->exp_obd, unlink)(exp, data, request);
1386         RETURN(rc);
1387 }
1388
1389 static inline struct obd_device *md_get_real_obd(struct obd_export *exp,
1390                                                  struct lustre_id *fid)
1391 {
1392         ENTRY;
1393         if (MDP(exp->exp_obd, get_real_obd) == NULL)
1394                 return exp->exp_obd;
1395         MD_COUNTER_INCREMENT(exp->exp_obd, get_real_obd);
1396         return MDP(exp->exp_obd, get_real_obd)(exp, fid);
1397 }
1398
1399 static inline int md_valid_attrs(struct obd_export *exp,
1400                                  struct lustre_id *id)
1401 {
1402         ENTRY;
1403         EXP_CHECK_MD_OP(exp, valid_attrs);
1404         MD_COUNTER_INCREMENT(exp->exp_obd, valid_attrs);
1405         return MDP(exp->exp_obd, valid_attrs)(exp, id);
1406 }
1407
1408 static inline int md_req2lustre_md(struct obd_export *exp,
1409                                    struct ptlrpc_request *req,
1410                                    unsigned int offset,
1411                                    struct obd_export *osc_exp,
1412                                    struct lustre_md *md)
1413 {
1414         ENTRY;
1415         EXP_CHECK_MD_OP(exp, req2lustre_md);
1416         MD_COUNTER_INCREMENT(exp->exp_obd, req2lustre_md);
1417         return MDP(exp->exp_obd, req2lustre_md)(exp, req, offset, osc_exp, md);
1418 }
1419
1420 static inline int md_set_open_replay_data(struct obd_export *exp,
1421                                           struct obd_client_handle *och,
1422                                           struct ptlrpc_request *open_req)
1423 {
1424         ENTRY;
1425         EXP_CHECK_MD_OP(exp, set_open_replay_data);
1426         MD_COUNTER_INCREMENT(exp->exp_obd, set_open_replay_data);
1427         return MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req);
1428 }
1429
1430 static inline int md_clear_open_replay_data(struct obd_export *exp,
1431                                             struct obd_client_handle *och)
1432 {
1433         ENTRY;
1434         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
1435         MD_COUNTER_INCREMENT(exp->exp_obd, clear_open_replay_data);
1436         return MDP(exp->exp_obd, clear_open_replay_data)(exp, och);
1437 }
1438
1439 static inline int md_store_inode_generation(struct obd_export *exp,
1440                                             struct ptlrpc_request *req,
1441                                             int reqoff, int repoff)
1442 {
1443         ENTRY;
1444         EXP_CHECK_MD_OP(exp, store_inode_generation);
1445         MD_COUNTER_INCREMENT(exp->exp_obd, store_inode_generation);
1446         return MDP(exp->exp_obd, store_inode_generation)(exp, req,
1447                    reqoff, repoff);
1448 }
1449
1450 static inline int md_set_lock_data(struct obd_export *exp, __u64 *l,
1451                                    void *data)
1452 {
1453         ENTRY;
1454         EXP_CHECK_MD_OP(exp, set_lock_data);
1455         MD_COUNTER_INCREMENT(exp->exp_obd, set_lock_data);
1456         return MDP(exp->exp_obd, set_lock_data)(exp, l, data);
1457 }
1458
1459 /* OBD Metadata Support */
1460
1461 extern int obd_init_caches(void);
1462 extern void obd_cleanup_caches(void);
1463
1464 /* support routines */
1465 extern kmem_cache_t *obdo_cachep;
1466 static inline struct obdo *obdo_alloc(void)
1467 {
1468         struct obdo *oa;
1469
1470         OBD_SLAB_ALLOC(oa, obdo_cachep, GFP_KERNEL,
1471                        sizeof(*oa));
1472         return oa;
1473 }
1474
1475 static inline void obdo_free(struct obdo *oa)
1476 {
1477         OBD_SLAB_FREE(oa, obdo_cachep, sizeof(*oa));
1478 }
1479
1480 static inline void obdo2id(struct lustre_id *id,
1481                            struct obdo *oa)
1482 {
1483         LASSERT(oa && id);
1484         id_ino(id) = oa->o_id;
1485         id_fid(id) = oa->o_fid;
1486         id_group(id) = oa->o_mds;
1487         id_gen(id) = oa->o_generation;
1488 }
1489
1490 static inline void id2obdo(struct obdo *oa,
1491                            struct lustre_id *id)
1492 {
1493         LASSERT(oa && id);
1494         oa->o_id = id_ino(id);
1495         oa->o_fid = id_fid(id);
1496         oa->o_mds = id_group(id);
1497         oa->o_generation = id_gen(id);
1498 }
1499
1500 #if !defined(__KERNEL__) || (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
1501 #define to_kdev_t(dev) dev
1502 #define kdev_t_to_nr(dev) dev
1503 #endif
1504
1505 /* I'm as embarrassed about this as you are.
1506  *
1507  * <shaver> // XXX do not look into _superhack with remaining eye
1508  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
1509 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
1510 extern void (*ptlrpc_abort_inflight_superhack)(struct obd_import *imp);
1511
1512 /* sysctl.c */
1513 extern void obd_sysctl_init (void);
1514 extern void obd_sysctl_clean (void);
1515
1516 /* uuid.c  */
1517 typedef __u8 class_uuid_t[16];
1518 //int class_uuid_parse(struct obd_uuid in, class_uuid_t out);
1519 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
1520
1521 /* lustre_peer.c    */
1522 int lustre_uuid_to_peer(char *uuid, __u32 *peer_nal, ptl_nid_t *peer_nid);
1523 int class_add_uuid(char *uuid, __u64 nid, __u32 nal);
1524 int class_del_uuid (char *uuid);
1525 void class_init_uuidlist(void);
1526 void class_exit_uuidlist(void);
1527
1528 /* mea.c */
1529 int mea_name2idx(struct mea *mea, char *name, int namelen);
1530 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
1531
1532 #endif /* __LINUX_OBD_CLASS_H */