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         char *lp_gkc;
 104 };
 105
 106 struct lustre_profile *class_get_profile(char * prof);
 107 void class_del_profile(char *prof);
 108
 109 #define class_export_rpc_get(exp)                                       \
 110 ({                                                                      \
 111         atomic_inc(&(exp)->exp_rpc_count);                              \
 112         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",    \
 113                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 114         class_export_get(exp);                                          \
 115 })
 116
 117 #define class_export_rpc_put(exp)                                       \
 118 ({                                                                      \
 119         atomic_dec(&(exp)->exp_rpc_count);                              \
 120         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",    \
 121                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 122         class_export_put(exp);                                          \
 123 })
 124
 125 #define class_export_get(exp)                                                  \
 126 ({                                                                             \
 127         struct obd_export *exp_ = exp;                                         \
 128         atomic_inc(&exp_->exp_refcount);                                       \
 129         CDEBUG(D_INFO, "GETting export %p : new refcount %d\n", exp_,          \
 130                atomic_read(&exp_->exp_refcount));                              \
 131         exp_;                                                                  \
 132 })
 133
 134 #define class_export_put(exp)                                                  \
 135 do {                                                                           \
 136         LASSERT((exp) != NULL);                                                \
 137         CDEBUG(D_INFO, "PUTting export %p : new refcount %d\n", (exp),         \
 138                atomic_read(&(exp)->exp_refcount) - 1);                         \
 139         LASSERT(atomic_read(&(exp)->exp_refcount) > 0);                        \
 140         LASSERT(atomic_read(&(exp)->exp_refcount) < 0x5a5a5a);                 \
 141         __class_export_put(exp);                                               \
 142 } while (0)
 143
 144 void __class_export_put(struct obd_export *);
 145 struct obd_export *class_new_export(struct obd_device *obddev);
 146 void class_unlink_export(struct obd_export *exp);
 147
 148 struct obd_import *class_import_get(struct obd_import *);
 149 void class_import_put(struct obd_import *);
 150 struct obd_import *class_new_import(void);
 151 void class_destroy_import(struct obd_import *exp);
 152
 153 struct obd_type *class_get_type(char *name);
 154 void class_put_type(struct obd_type *type);
 155 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 156                   struct obd_uuid *cluuid);
 157 int class_disconnect(struct obd_export *exp, unsigned long flags);
 158 void class_disconnect_exports(struct obd_device *, unsigned long);
 159 int class_disconnect_stale_exports(struct obd_device *,
 160                                    int (*test_export)(struct obd_export *),
 161                                    unsigned long);
 162
 163 /* generic operations shared by various OBD types */
 164 int class_multi_setup(struct obd_device *obddev, uint32_t len, void *data);
 165 int class_multi_cleanup(struct obd_device *obddev);
 166
 167 /* obdo.c */
 168 #ifdef __KERNEL__
 169 void obdo_from_iattr(struct obdo *oa, struct iattr *attr, unsigned ia_valid);
 170 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, obd_valid valid);
 171 void obdo_from_inode(struct obdo *dst, struct inode *src, obd_valid valid);
 172 void obdo_refresh_inode(struct inode *dst, struct obdo *src, obd_valid valid);
 173 void obdo_to_inode(struct inode *dst, struct obdo *src, obd_valid valid);
 174 #endif
 175 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_valid valid);
 176 int obdo_cmp_md(struct obdo *dst, struct obdo *src, obd_valid compare);
 177 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
 178
 179 #define OBT(dev)        (dev)->obd_type
 180 #define OBP(dev, op)    (dev)->obd_type->typ_ops->o_ ## op
 181 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
 182 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 183
 184 /* Ensure obd_setup: used for cleanup which must be called
 185    while obd is stopping */
 186 #define OBD_CHECK_DEV(obd)                                      \
 187 do {                                                            \
 188         if (!(obd)) {                                           \
 189                 CERROR("NULL device\n");                        \
 190                 RETURN(-ENODEV);                                \
 191         }                                                       \
 192 } while (0)
 193
 194 #define OBD_CHECK_DEV_STOPPING(obd)                             \
 195 do {                                                            \
 196         OBD_CHECK_DEV(obd);                                     \
 197         if (!(obd)->obd_set_up) {                               \
 198                 CERROR("Device %d not setup\n",                 \
 199                        (obd)->obd_minor);                       \
 200                 RETURN(-ENODEV);                                \
 201         }                                                       \
 202                                                                 \
 203         if (!(obd)->obd_stopping) {                             \
 204                 CERROR("Device %d not stopping\n",              \
 205                        (obd)->obd_minor);                       \
 206                 RETURN(-ENODEV);                                \
 207         }                                                       \
 208 } while (0)
 209
 210 /* ensure obd_setup and !obd_stopping */
 211 #define OBD_CHECK_DEV_ACTIVE(obd)                               \
 212 do {                                                            \
 213         OBD_CHECK_DEV(obd);                                     \
 214         if (!(obd)->obd_set_up || (obd)->obd_stopping) {        \
 215                 CERROR("Device %d not setup\n",                 \
 216                        (obd)->obd_minor);                       \
 217                 RETURN(-ENODEV);                                \
 218         }                                                       \
 219 } while (0)
 220
 221
 222 #ifdef LPROCFS
 223 #define OBD_COUNTER_OFFSET(op)                                  \
 224         ((offsetof(struct obd_ops, o_ ## op) -                  \
 225           offsetof(struct obd_ops, o_iocontrol))                \
 226          / sizeof(((struct obd_ops *)(0))->o_iocontrol))
 227
 228 #define OBD_COUNTER_INCREMENT(obd, op)                          \
 229         if ((obd)->obd_stats != NULL) {                         \
 230                 unsigned int coffset;                           \
 231                 coffset = (unsigned int)(obd)->obd_cntr_base +  \
 232                         OBD_COUNTER_OFFSET(op);                 \
 233                 LASSERT(coffset < (obd)->obd_stats->ls_num);    \
 234                 lprocfs_counter_incr((obd)->obd_stats, coffset);\
 235         }
 236
 237 #define MD_COUNTER_OFFSET(op)                                  \
 238         ((offsetof(struct md_ops, m_ ## op) -                  \
 239           offsetof(struct md_ops, m_getstatus))                \
 240          / sizeof(((struct md_ops *)(0))->m_getstatus))
 241
 242 #define MD_COUNTER_INCREMENT(obd, op)                           \
 243         if ((obd)->md_stats != NULL) {                          \
 244                 unsigned int coffset;                           \
 245                 coffset = (unsigned int)(obd)->md_cntr_base +   \
 246                         MD_COUNTER_OFFSET(op);                  \
 247                 LASSERT(coffset < (obd)->md_stats->ls_num);     \
 248                 lprocfs_counter_incr((obd)->md_stats, coffset); \
 249         }
 250
 251 #else
 252 #define OBD_COUNTER_OFFSET(op)
 253 #define OBD_COUNTER_INCREMENT(obd, op)
 254 #define MD_COUNTER_INCREMENT(obd, op)
 255 #endif
 256
 257 #define OBD_CHECK_MD_OP(obd, op, err)                           \
 258 do {                                                            \
 259         if (!OBT(obd) || !MDP((obd), op)) {\
 260                 if (err)                                        \
 261                         CERROR("md_" #op ": dev %s/%d no operation\n", \
 262                                obd->obd_name, obd->obd_minor);  \
 263                 RETURN(err);                                    \
 264         }                                                       \
 265 } while (0)
 266
 267 #define EXP_CHECK_MD_OP(exp, op)                                \
 268 do {                                                            \
 269         if ((exp) == NULL) {                                    \
 270                 CERROR("obd_" #op ": NULL export\n");           \
 271                 portals_debug_dumplog();                        \
 272                 RETURN(-ENODEV);                                \
 273         }                                                       \
 274         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 275                 CERROR("obd_" #op ": cleaned up obd\n");        \
 276                 RETURN(-EOPNOTSUPP);                            \
 277         }                                                       \
 278         if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
 279                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 280                        (exp)->exp_obd->obd_name,                \
 281                        (exp)->exp_obd->obd_minor);              \
 282                 RETURN(-EOPNOTSUPP);                            \
 283         }                                                       \
 284 } while (0)
 285
 286 #define OBD_CHECK_OP(obd, op, err)                              \
 287 do {                                                            \
 288         if (!OBT(obd) || !OBP((obd), op)) {\
 289                 if (err)                                        \
 290                         CERROR("obd_" #op ": dev %s/%d no operation\n", \
 291                                obd->obd_name, obd->obd_minor);  \
 292                 RETURN(err);                                    \
 293         }                                                       \
 294 } while (0)
 295
 296 #define EXP_CHECK_OP(exp, op)                                   \
 297 do {                                                            \
 298         if ((exp) == NULL) {                                    \
 299                 CERROR("obd_" #op ": NULL export\n");           \
 300                 portals_debug_dumplog();                        \
 301                 RETURN(-ENODEV);                                \
 302         }                                                       \
 303         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 304                 CERROR("obd_" #op ": cleaned up obd\n");        \
 305                 RETURN(-EOPNOTSUPP);                            \
 306         }                                                       \
 307         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 308                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 309                        (exp)->exp_obd->obd_name,                \
 310                        (exp)->exp_obd->obd_minor);              \
 311                 RETURN(-EOPNOTSUPP);                            \
 312         }                                                       \
 313 } while (0)
 314
 315 #define CTXT_CHECK_OP(ctxt, op, err)                            \
 316 do {                                                            \
 317         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {        \
 318                 if (err)                                        \
 319                         CERROR("lop_" #op ": dev %d no operation\n",    \
 320                                ctxt->loc_obd->obd_minor);               \
 321                 RETURN(err);                                    \
 322         }                                                       \
 323 } while (0)
 324
 325 static inline int obd_get_info(struct obd_export *exp, __u32 keylen,
 326                                void *key, __u32 *vallen, void *val)
 327 {
 328         int rc;
 329         ENTRY;
 330
 331         EXP_CHECK_OP(exp, get_info);
 332         OBD_COUNTER_INCREMENT(exp->exp_obd, get_info);
 333
 334         rc = OBP(exp->exp_obd, get_info)(exp, keylen, key, vallen, val);
 335         RETURN(rc);
 336 }
 337
 338 static inline int obd_set_info(struct obd_export *exp, obd_count keylen,
 339                                void *key, obd_count vallen, void *val)
 340 {
 341         int rc;
 342         ENTRY;
 343
 344         EXP_CHECK_OP(exp, set_info);
 345         OBD_COUNTER_INCREMENT(exp->exp_obd, set_info);
 346
 347         rc = OBP(exp->exp_obd, set_info)(exp, keylen, key, vallen, val);
 348         RETURN(rc);
 349 }
 350
 351 static inline int obd_setup(struct obd_device *obd, int datalen, void *data)
 352 {
 353         int rc;
 354         ENTRY;
 355
 356         OBD_CHECK_OP(obd, setup, -EOPNOTSUPP);
 357         OBD_COUNTER_INCREMENT(obd, setup);
 358
 359         rc = OBP(obd, setup)(obd, datalen, data);
 360         RETURN(rc);
 361 }
 362
 363 static inline int obd_precleanup(struct obd_device *obd, int flags)
 364 {
 365         int rc;
 366         ENTRY;
 367
 368         OBD_CHECK_OP(obd, precleanup, 0);
 369         OBD_COUNTER_INCREMENT(obd, precleanup);
 370
 371         rc = OBP(obd, precleanup)(obd, flags);
 372         RETURN(rc);
 373 }
 374
 375 static inline int obd_cleanup(struct obd_device *obd, int flags)
 376 {
 377         int rc;
 378         ENTRY;
 379
 380         OBD_CHECK_DEV_STOPPING(obd);
 381         OBD_CHECK_OP(obd, cleanup, 0);
 382         OBD_COUNTER_INCREMENT(obd, cleanup);
 383
 384         rc = OBP(obd, cleanup)(obd, flags);
 385         RETURN(rc);
 386 }
 387
 388 static inline int
 389 obd_process_config(struct obd_device *obd, int datalen, void *data)
 390 {
 391         int rc;
 392         ENTRY;
 393
 394         OBD_CHECK_OP(obd, process_config, -EOPNOTSUPP);
 395         OBD_COUNTER_INCREMENT(obd, process_config);
 396
 397         rc = OBP(obd, process_config)(obd, datalen, data);
 398         RETURN(rc);
 399 }
 400
 401 /* Pack an in-memory MD struct for storage on disk.
 402  * Returns +ve size of packed MD (0 for free), or -ve error.
 403  *
 404  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 405  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 406  * If @*disk_tgt == NULL, it will be allocated
 407  */
 408 static inline int obd_packmd(struct obd_export *exp,
 409                              struct lov_mds_md **disk_tgt,
 410                              struct lov_stripe_md *mem_src)
 411 {
 412         int rc;
 413         ENTRY;
 414
 415         EXP_CHECK_OP(exp, packmd);
 416         OBD_COUNTER_INCREMENT(exp->exp_obd, packmd);
 417
 418         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 419         RETURN(rc);
 420 }
 421
 422 static inline int obd_size_diskmd(struct obd_export *exp,
 423                                   struct lov_stripe_md *mem_src)
 424 {
 425         return obd_packmd(exp, NULL, mem_src);
 426 }
 427
 428 /* helper functions */
 429 static inline int obd_alloc_diskmd(struct obd_export *exp,
 430                                    struct lov_mds_md **disk_tgt)
 431 {
 432         LASSERT(disk_tgt);
 433         LASSERT(*disk_tgt == NULL);
 434         return obd_packmd(exp, disk_tgt, NULL);
 435 }
 436
 437 static inline int obd_free_diskmd(struct obd_export *exp,
 438                                   struct lov_mds_md **disk_tgt)
 439 {
 440         LASSERT(disk_tgt);
 441         LASSERT(*disk_tgt);
 442         return obd_packmd(exp, disk_tgt, NULL);
 443 }
 444
 445 /* Unpack an MD struct from disk to in-memory format.
 446  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 447  *
 448  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 449  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 450  * If @*mem_tgt == NULL, it will be allocated
 451  */
 452 static inline int obd_unpackmd(struct obd_export *exp,
 453                                struct lov_stripe_md **mem_tgt,
 454                                struct lov_mds_md *disk_src,
 455                                int disk_len)
 456 {
 457         int rc;
 458         ENTRY;
 459
 460         EXP_CHECK_OP(exp, unpackmd);
 461         OBD_COUNTER_INCREMENT(exp->exp_obd, unpackmd);
 462
 463         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 464         RETURN(rc);
 465 }
 466
 467 /* helper functions */
 468 static inline int obd_alloc_memmd(struct obd_export *exp,
 469                                   struct lov_stripe_md **mem_tgt)
 470 {
 471         LASSERT(mem_tgt);
 472         LASSERT(*mem_tgt == NULL);
 473         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 474 }
 475
 476 static inline int obd_free_memmd(struct obd_export *exp,
 477                                  struct lov_stripe_md **mem_tgt)
 478 {
 479         LASSERT(mem_tgt);
 480         LASSERT(*mem_tgt);
 481         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 482 }
 483
 484 static inline int obd_revalidate_md(struct obd_export *exp, struct obdo *obdo,
 485                                     struct lov_stripe_md *ea,
 486                                     struct obd_trans_info *oti)
 487 {
 488         int rc;
 489         ENTRY;
 490
 491         EXP_CHECK_OP(exp, revalidate_md);
 492         OBD_COUNTER_INCREMENT(exp->exp_obd, revalidate_md);
 493
 494         rc = OBP(exp->exp_obd, revalidate_md)(exp, obdo, ea, oti);
 495         RETURN(rc);
 496 }
 497
 498 static inline int obd_create(struct obd_export *exp, struct obdo *obdo,
 499                              void *acl, int acl_size,
 500                              struct lov_stripe_md **ea,
 501                              struct obd_trans_info *oti)
 502 {
 503         int rc;
 504         ENTRY;
 505
 506         EXP_CHECK_OP(exp, create);
 507         OBD_COUNTER_INCREMENT(exp->exp_obd, create);
 508
 509         rc = OBP(exp->exp_obd, create)(exp, obdo, acl, acl_size, ea, oti);
 510         RETURN(rc);
 511 }
 512
 513 static inline int obd_destroy(struct obd_export *exp, struct obdo *obdo,
 514                               struct lov_stripe_md *ea,
 515                               struct obd_trans_info *oti)
 516 {
 517         int rc;
 518         ENTRY;
 519
 520         EXP_CHECK_OP(exp, destroy);
 521         OBD_COUNTER_INCREMENT(exp->exp_obd, destroy);
 522
 523         rc = OBP(exp->exp_obd, destroy)(exp, obdo, ea, oti);
 524         RETURN(rc);
 525 }
 526
 527 static inline int obd_getattr(struct obd_export *exp, struct obdo *obdo,
 528                               struct lov_stripe_md *ea)
 529 {
 530         int rc;
 531         ENTRY;
 532
 533         EXP_CHECK_OP(exp, getattr);
 534         OBD_COUNTER_INCREMENT(exp->exp_obd, getattr);
 535
 536         rc = OBP(exp->exp_obd, getattr)(exp, obdo, ea);
 537         RETURN(rc);
 538 }
 539
 540 static inline int obd_getattr_async(struct obd_export *exp,
 541                                     struct obdo *obdo, struct lov_stripe_md *ea,
 542                                     struct ptlrpc_request_set *set)
 543 {
 544         int rc;
 545         ENTRY;
 546
 547         EXP_CHECK_OP(exp, getattr);
 548         OBD_COUNTER_INCREMENT(exp->exp_obd, getattr);
 549
 550         rc = OBP(exp->exp_obd, getattr_async)(exp, obdo, ea, set);
 551         RETURN(rc);
 552 }
 553
 554 static inline int obd_setattr(struct obd_export *exp, struct obdo *obdo,
 555                               struct lov_stripe_md *ea,
 556                               struct obd_trans_info *oti,
 557                               struct lustre_capa *capa)
 558 {
 559         int rc;
 560         ENTRY;
 561
 562         EXP_CHECK_OP(exp, setattr);
 563         OBD_COUNTER_INCREMENT(exp->exp_obd, setattr);
 564
 565         rc = OBP(exp->exp_obd, setattr)(exp, obdo, ea, oti, capa);
 566         RETURN(rc);
 567 }
 568 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 569                                int priority)
 570 {
 571         struct obd_device *obd = imp->imp_obd;
 572         int rc;
 573         ENTRY;
 574
 575         OBD_CHECK_DEV_ACTIVE(obd);
 576         OBD_CHECK_OP(obd, add_conn, -EOPNOTSUPP);
 577         OBD_COUNTER_INCREMENT(obd, add_conn);
 578
 579         rc = OBP(obd, add_conn)(imp, uuid, priority);
 580         RETURN(rc);
 581 }
 582
 583 static inline int obd_del_conn(struct obd_import *imp,
 584                                struct obd_uuid *uuid)
 585 {
 586         struct obd_device *obd = imp->imp_obd;
 587         int rc;
 588         ENTRY;
 589
 590         OBD_CHECK_DEV_ACTIVE(obd);
 591         OBD_CHECK_OP(obd, del_conn, -EOPNOTSUPP);
 592         OBD_COUNTER_INCREMENT(obd, del_conn);
 593
 594         rc = OBP(obd, del_conn)(imp, uuid);
 595         RETURN(rc);
 596 }
 597
 598
 599 static inline int obd_connect(struct lustre_handle *conn,
 600                               struct obd_device *obd,
 601                               struct obd_uuid *cluuid,
 602                               struct obd_connect_data *data,
 603                               unsigned long flags)
 604 {
 605         int rc;
 606         ENTRY;
 607
 608         OBD_CHECK_DEV_ACTIVE(obd);
 609         OBD_CHECK_OP(obd, connect, -EOPNOTSUPP);
 610         OBD_COUNTER_INCREMENT(obd, connect);
 611
 612         rc = OBP(obd, connect)(conn, obd, cluuid, data, flags);
 613         RETURN(rc);
 614 }
 615
 616 static inline int obd_connect_post(struct obd_export *exp,
 617                                    unsigned initial,
 618                                    unsigned long flags)
 619 {
 620         int rc;
 621         ENTRY;
 622
 623         OBD_CHECK_DEV_ACTIVE(exp->exp_obd);
 624         if (!OBT(exp->exp_obd) || !OBP((exp->exp_obd), connect_post))
 625                 RETURN(0);
 626         OBD_COUNTER_INCREMENT(exp->exp_obd, connect_post);
 627         rc = OBP(exp->exp_obd, connect_post)(exp, initial, flags);
 628         RETURN(rc);
 629 }
 630
 631 static inline int obd_disconnect(struct obd_export *exp,
 632                                  unsigned long flags)
 633 {
 634         int rc;
 635         ENTRY;
 636
 637         EXP_CHECK_OP(exp, disconnect);
 638         OBD_COUNTER_INCREMENT(exp->exp_obd, disconnect);
 639
 640         rc = OBP(exp->exp_obd, disconnect)(exp, flags);
 641         RETURN(rc);
 642 }
 643
 644 static inline int obd_init_export(struct obd_export *exp)
 645 {
 646         int rc = 0;
 647
 648         ENTRY;
 649         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 650             OBP((exp)->exp_obd, init_export))
 651                 rc = OBP(exp->exp_obd, init_export)(exp);
 652         RETURN(rc);
 653 }
 654
 655 static inline int obd_destroy_export(struct obd_export *exp)
 656 {
 657         ENTRY;
 658         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 659             OBP((exp)->exp_obd, destroy_export))
 660                 OBP(exp->exp_obd, destroy_export)(exp);
 661         RETURN(0);
 662 }
 663
 664 static inline struct dentry *
 665 obd_lvfs_id2dentry(struct obd_export *exp, __u64 ino,
 666                    __u32 gen, __u64 gr)
 667 {
 668         LASSERT(exp->exp_obd);
 669
 670         return lvfs_id2dentry(&exp->exp_obd->obd_lvfs_ctxt,
 671                               ino, gen, gr, exp->exp_obd);
 672 }
 673
 674 #ifndef time_before
 675 #define time_before(t1, t2) ((long)t2 - (long)t1 > 0)
 676 #endif
 677
 678 /* @max_age is the oldest time in jiffies that we accept using a cached data.
 679  * If the cache is older than @max_age we will get a new value from the
 680  * target.  Use a value of "jiffies + HZ" to guarantee freshness. */
 681 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
 682                              unsigned long max_age)
 683 {
 684         int rc = 0;
 685         ENTRY;
 686
 687         if (obd == NULL)
 688                 RETURN(-EINVAL);
 689
 690         OBD_CHECK_OP(obd, statfs, -EOPNOTSUPP);
 691         OBD_COUNTER_INCREMENT(obd, statfs);
 692
 693         CDEBUG(D_SUPER, "osfs %lu, max_age %lu\n", obd->obd_osfs_age, max_age);
 694         if (time_before(obd->obd_osfs_age, max_age)) {
 695                 rc = OBP(obd, statfs)(obd, osfs, max_age);
 696                 if (rc == 0) {
 697                         spin_lock(&obd->obd_osfs_lock);
 698                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
 699                         obd->obd_osfs_age = jiffies;
 700                         spin_unlock(&obd->obd_osfs_lock);
 701                 }
 702         } else {
 703                 CDEBUG(D_SUPER, "using cached obd_statfs data\n");
 704                 spin_lock(&obd->obd_osfs_lock);
 705                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
 706                 spin_unlock(&obd->obd_osfs_lock);
 707         }
 708         RETURN(rc);
 709 }
 710
 711 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
 712                            struct lov_stripe_md *ea, obd_size start,
 713                            obd_size end)
 714 {
 715         int rc;
 716         ENTRY;
 717
 718         OBD_CHECK_OP(exp->exp_obd, sync, -EOPNOTSUPP);
 719         OBD_COUNTER_INCREMENT(exp->exp_obd, sync);
 720
 721         rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end);
 722         RETURN(rc);
 723 }
 724
 725 static inline int obd_punch(struct obd_export *exp, struct obdo *oa,
 726                             struct lov_stripe_md *ea, obd_size start,
 727                             obd_size end, struct obd_trans_info *oti,
 728                             struct lustre_capa *capa)
 729 {
 730         int rc;
 731         ENTRY;
 732
 733         EXP_CHECK_OP(exp, punch);
 734         OBD_COUNTER_INCREMENT(exp->exp_obd, punch);
 735
 736         rc = OBP(exp->exp_obd, punch)(exp, oa, ea, start, end, oti, capa);
 737         RETURN(rc);
 738 }
 739
 740 static inline int obd_brw(int cmd, struct obd_export *exp, struct obdo *oa,
 741                           struct lov_stripe_md *ea, obd_count oa_bufs,
 742                           struct brw_page *pg, struct obd_trans_info *oti)
 743 {
 744         int rc;
 745         ENTRY;
 746
 747         EXP_CHECK_OP(exp, brw);
 748         OBD_COUNTER_INCREMENT(exp->exp_obd, brw);
 749
 750         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
 751                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
 752                        "or OBD_BRW_CHECK\n");
 753                 LBUG();
 754         }
 755
 756         rc = OBP(exp->exp_obd, brw)(cmd, exp, oa, ea, oa_bufs, pg, oti);
 757         RETURN(rc);
 758 }
 759
 760 static inline int obd_brw_async(int cmd, struct obd_export *exp,
 761                                 struct obdo *oa, struct lov_stripe_md *ea,
 762                                 obd_count oa_bufs, struct brw_page *pg,
 763                                 struct ptlrpc_request_set *set,
 764                                 struct obd_trans_info *oti)
 765 {
 766         int rc;
 767         ENTRY;
 768
 769         EXP_CHECK_OP(exp, brw_async);
 770         OBD_COUNTER_INCREMENT(exp->exp_obd, brw_async);
 771
 772         if (!(cmd & OBD_BRW_RWMASK)) {
 773                 CERROR("obd_brw: cmd must be OBD_BRW_READ or OBD_BRW_WRITE\n");
 774                 LBUG();
 775         }
 776
 777         rc = OBP(exp->exp_obd, brw_async)(cmd, exp, oa, ea, oa_bufs, pg, set,
 778                                           oti);
 779         RETURN(rc);
 780 }
 781
 782 static inline int obd_prep_async_page(struct obd_export *exp,
 783                                       struct lov_stripe_md *lsm,
 784                                       struct lov_oinfo *loi,
 785                                       struct page *page, obd_off offset,
 786                                       struct obd_async_page_ops *ops,
 787                                       void *data, void **res)
 788 {
 789         int ret;
 790         ENTRY;
 791
 792         OBD_CHECK_OP(exp->exp_obd, prep_async_page, -EOPNOTSUPP);
 793         OBD_COUNTER_INCREMENT(exp->exp_obd, prep_async_page);
 794
 795         ret = OBP(exp->exp_obd, prep_async_page)(exp, lsm, loi, page, offset,
 796                                                  ops, data, res);
 797         RETURN(ret);
 798 }
 799
 800 static inline int obd_queue_async_io(struct obd_export *exp,
 801                                      struct lov_stripe_md *lsm,
 802                                      struct lov_oinfo *loi, void *cookie,
 803                                      int cmd, obd_off off, int count,
 804                                      obd_flags brw_flags, obd_flags async_flags)
 805 {
 806         int rc;
 807         ENTRY;
 808
 809         OBD_CHECK_OP(exp->exp_obd, queue_async_io, -EOPNOTSUPP);
 810         OBD_COUNTER_INCREMENT(exp->exp_obd, queue_async_io);
 811         LASSERT(cmd & OBD_BRW_RWMASK);
 812
 813         rc = OBP(exp->exp_obd, queue_async_io)(exp, lsm, loi, cookie, cmd, off,
 814                                                count, brw_flags, async_flags);
 815         RETURN(rc);
 816 }
 817
 818 static inline int obd_set_async_flags(struct obd_export *exp,
 819                                       struct lov_stripe_md *lsm,
 820                                       struct lov_oinfo *loi, void *cookie,
 821                                       obd_flags async_flags)
 822 {
 823         int rc;
 824         ENTRY;
 825
 826         OBD_CHECK_OP(exp->exp_obd, set_async_flags, -EOPNOTSUPP);
 827         OBD_COUNTER_INCREMENT(exp->exp_obd, set_async_flags);
 828
 829         rc = OBP(exp->exp_obd, set_async_flags)(exp, lsm, loi, cookie,
 830                                                 async_flags);
 831         RETURN(rc);
 832 }
 833
 834 static inline int obd_queue_group_io(struct obd_export *exp,
 835                                      struct lov_stripe_md *lsm,
 836                                      struct lov_oinfo *loi,
 837                                      struct obd_io_group *oig,
 838                                      void *cookie, int cmd, obd_off off,
 839                                      int count, obd_flags brw_flags,
 840                                      obd_flags async_flags)
 841 {
 842         int rc;
 843         ENTRY;
 844
 845         OBD_CHECK_OP(exp->exp_obd, queue_group_io, -EOPNOTSUPP);
 846         OBD_COUNTER_INCREMENT(exp->exp_obd, queue_group_io);
 847         LASSERT(cmd & OBD_BRW_RWMASK);
 848
 849         rc = OBP(exp->exp_obd, queue_group_io)(exp, lsm, loi, oig, cookie,
 850                                                cmd, off, count, brw_flags,
 851                                                async_flags);
 852         RETURN(rc);
 853 }
 854
 855 static inline int obd_trigger_group_io(struct obd_export *exp,
 856                                        struct lov_stripe_md *lsm,
 857                                        struct lov_oinfo *loi,
 858                                        struct obd_io_group *oig)
 859 {
 860         int rc;
 861         ENTRY;
 862
 863         OBD_CHECK_OP(exp->exp_obd, trigger_group_io, -EOPNOTSUPP);
 864         OBD_COUNTER_INCREMENT(exp->exp_obd, trigger_group_io);
 865
 866         rc = OBP(exp->exp_obd, trigger_group_io)(exp, lsm, loi, oig);
 867         RETURN(rc);
 868 }
 869
 870 static inline int obd_teardown_async_page(struct obd_export *exp,
 871                                           struct lov_stripe_md *lsm,
 872                                           struct lov_oinfo *loi, void *cookie)
 873 {
 874         int rc;
 875         ENTRY;
 876
 877         OBD_CHECK_OP(exp->exp_obd, teardown_async_page, -EOPNOTSUPP);
 878         OBD_COUNTER_INCREMENT(exp->exp_obd, teardown_async_page);
 879
 880         rc = OBP(exp->exp_obd, teardown_async_page)(exp, lsm, loi, cookie);
 881         RETURN(rc);
 882 }
 883
 884 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
 885                              int objcount, struct obd_ioobj *obj,
 886                              int niocount, struct niobuf_remote *remote,
 887                              struct niobuf_local *local,
 888                              struct obd_trans_info *oti,
 889                              struct lustre_capa *capa)
 890 {
 891         int rc;
 892         ENTRY;
 893
 894         OBD_CHECK_OP(exp->exp_obd, preprw, -EOPNOTSUPP);
 895         OBD_COUNTER_INCREMENT(exp->exp_obd, preprw);
 896
 897         rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, niocount,
 898                                        remote, local, oti, capa);
 899         RETURN(rc);
 900 }
 901
 902 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
 903                                int objcount, struct obd_ioobj *obj,
 904                                int niocount, struct niobuf_local *local,
 905                                struct obd_trans_info *oti, int rc)
 906 {
 907         ENTRY;
 908
 909         OBD_CHECK_OP(exp->exp_obd, commitrw, -EOPNOTSUPP);
 910         OBD_COUNTER_INCREMENT(exp->exp_obd, commitrw);
 911
 912         rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj, niocount,
 913                                          local, oti, rc);
 914         RETURN(rc);
 915 }
 916
 917 static inline int obd_do_cow(struct obd_export *exp, struct obd_ioobj *obj,
 918                             int objcount,struct niobuf_remote *rnb)
 919 {
 920         int rc;
 921         ENTRY;
 922
 923         /* there are cases when write_extents is not implemented. */
 924         if (!OBP(exp->exp_obd, do_cow))
 925                 RETURN(0);
 926
 927         OBD_COUNTER_INCREMENT(exp->exp_obd, do_cow);
 928
 929         rc = OBP(exp->exp_obd, do_cow)(exp, obj, objcount, rnb);
 930
 931         RETURN(rc);
 932 }
 933
 934 static inline int obd_write_extents(struct obd_export *exp,
 935                                     struct obd_ioobj *obj,
 936                                     int objcount, int niocount,
 937                                     struct niobuf_local *local,
 938                                     int rc)
 939 {
 940         ENTRY;
 941
 942         /* there are cases when write_extents is not implemented. */
 943         if (!OBP(exp->exp_obd, write_extents))
 944                 RETURN(0);
 945
 946         OBD_COUNTER_INCREMENT(exp->exp_obd, write_extents);
 947
 948         rc = OBP(exp->exp_obd, write_extents)(exp, obj, objcount, niocount,
 949                                               local, rc);
 950         RETURN(rc);
 951 }
 952
 953 static inline int obd_adjust_kms(struct obd_export *exp,
 954                                  struct lov_stripe_md *lsm,
 955                                  obd_off size, int shrink)
 956 {
 957         int rc;
 958         ENTRY;
 959
 960         OBD_CHECK_OP(exp->exp_obd, adjust_kms, -EOPNOTSUPP);
 961         OBD_COUNTER_INCREMENT(exp->exp_obd, adjust_kms);
 962
 963         rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
 964         RETURN(rc);
 965 }
 966
 967 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
 968                                 int len, void *karg, void *uarg)
 969 {
 970         int rc;
 971         ENTRY;
 972
 973         EXP_CHECK_OP(exp, iocontrol);
 974         OBD_COUNTER_INCREMENT(exp->exp_obd, iocontrol);
 975
 976         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
 977         RETURN(rc);
 978 }
 979
 980 static inline int obd_enqueue(struct obd_export *exp, struct lov_stripe_md *ea,
 981                               __u32 type, ldlm_policy_data_t *policy,
 982                               __u32 mode, int *flags, void *bl_cb, void *cp_cb,
 983                               void *gl_cb, void *data, __u32 lvb_len,
 984                               void *lvb_swabber, struct lustre_handle *lockh)
 985 {
 986         int rc;
 987         ENTRY;
 988
 989         EXP_CHECK_OP(exp, enqueue);
 990         OBD_COUNTER_INCREMENT(exp->exp_obd, enqueue);
 991
 992         rc = OBP(exp->exp_obd, enqueue)(exp, ea, type, policy, mode, flags,
 993                                         bl_cb, cp_cb, gl_cb, data, lvb_len,
 994                                         lvb_swabber, lockh);
 995         RETURN(rc);
 996 }
 997
 998 static inline int obd_match(struct obd_export *exp, struct lov_stripe_md *ea,
 999                             __u32 type, ldlm_policy_data_t *policy, __u32 mode,
1000                             int *flags, void *data, struct lustre_handle *lockh)
1001 {
1002         int rc;
1003         ENTRY;
1004
1005         EXP_CHECK_OP(exp, match);
1006         OBD_COUNTER_INCREMENT(exp->exp_obd, match);
1007
1008         rc = OBP(exp->exp_obd, match)(exp, ea, type, policy, mode, flags, data,
1009                                       lockh);
1010         RETURN(rc);
1011 }
1012
1013 static inline int obd_change_cbdata(struct obd_export *exp,
1014                                     struct lov_stripe_md *lsm,
1015                                     ldlm_iterator_t it, void *data)
1016 {
1017         int rc;
1018         ENTRY;
1019
1020         EXP_CHECK_OP(exp, change_cbdata);
1021         OBD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata);
1022
1023         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1024         RETURN(rc);
1025 }
1026
1027 static inline int obd_cancel(struct obd_export *exp,
1028                              struct lov_stripe_md *ea, __u32 mode,
1029                              struct lustre_handle *lockh)
1030 {
1031         int rc;
1032         ENTRY;
1033
1034         EXP_CHECK_OP(exp, cancel);
1035         OBD_COUNTER_INCREMENT(exp->exp_obd, cancel);
1036
1037         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1038         RETURN(rc);
1039 }
1040
1041 static inline int obd_cancel_unused(struct obd_export *exp,
1042                                     struct lov_stripe_md *ea, int flags,
1043                                     void *opaque)
1044 {
1045         int rc;
1046         ENTRY;
1047
1048         EXP_CHECK_OP(exp, cancel_unused);
1049         OBD_COUNTER_INCREMENT(exp->exp_obd, cancel_unused);
1050
1051         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1052         RETURN(rc);
1053 }
1054
1055
1056 static inline int obd_san_preprw(int cmd, struct obd_export *exp,
1057                                  struct obdo *oa,
1058                                  int objcount, struct obd_ioobj *obj,
1059                                  int niocount, struct niobuf_remote *remote)
1060 {
1061         int rc;
1062
1063         EXP_CHECK_OP(exp, preprw);
1064         OBD_COUNTER_INCREMENT(exp->exp_obd, preprw);
1065
1066         rc = OBP(exp->exp_obd, san_preprw)(cmd, exp, oa, objcount, obj,
1067                                            niocount, remote);
1068         class_export_put(exp);
1069         return(rc);
1070 }
1071
1072 static inline int obd_pin(struct obd_export *exp, obd_id ino, __u32 gen,
1073                           int type, struct obd_client_handle *handle, int flag)
1074 {
1075         int rc;
1076
1077         EXP_CHECK_OP(exp, pin);
1078         OBD_COUNTER_INCREMENT(exp->exp_obd, pin);
1079
1080         rc = OBP(exp->exp_obd, pin)(exp, ino, gen, type, handle, flag);
1081         return(rc);
1082 }
1083
1084 static inline int obd_unpin(struct obd_export *exp,
1085                             struct obd_client_handle *handle, int flag)
1086 {
1087         int rc;
1088
1089         EXP_CHECK_OP(exp, unpin);
1090         OBD_COUNTER_INCREMENT(exp->exp_obd, unpin);
1091
1092         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1093         return(rc);
1094 }
1095
1096
1097 static inline void obd_import_event(struct obd_device *obd,
1098                                     struct obd_import *imp,
1099                                     enum obd_import_event event)
1100 {
1101         if (!obd) {
1102                 CERROR("NULL device\n");
1103                 EXIT;
1104                 return;
1105         }
1106         if (obd->obd_set_up && OBP(obd, import_event)) {
1107                 OBD_COUNTER_INCREMENT(obd, import_event);
1108                 OBP(obd, import_event)(obd, imp, event);
1109         }
1110 }
1111
1112 static inline int obd_llog_connect(struct obd_export *exp,
1113                                         struct llogd_conn_body *body)
1114 {
1115         ENTRY;
1116         EXP_CHECK_OP(exp, llog_connect);
1117         return OBP(exp->exp_obd, llog_connect)(exp, body);
1118 }
1119
1120 static inline int obd_notify(struct obd_device *obd, struct obd_device *watched,
1121                              int active, void *data)
1122 {
1123         OBD_CHECK_DEV(obd);
1124         if (!obd->obd_set_up) {
1125                 CERROR("obd %s not set up\n", obd->obd_name);
1126                 return -EINVAL;
1127         }
1128
1129         if (!OBP(obd, notify)) {
1130                 CERROR("obd %s has no notify handler\n", obd->obd_name);
1131                 return -ENOSYS;
1132         }
1133
1134         OBD_COUNTER_INCREMENT(obd, notify);
1135         return OBP(obd, notify)(obd, watched, active, data);
1136 }
1137
1138 static inline int obd_register_observer(struct obd_device *obd,
1139                                         struct obd_device *observer)
1140 {
1141         ENTRY;
1142         OBD_CHECK_DEV(obd);
1143         if (obd->obd_observer && observer)
1144                 RETURN(-EALREADY);
1145         obd->obd_observer = observer;
1146         RETURN(0);
1147 }
1148
1149 static inline int obd_init_ea_size(struct obd_export *exp, int size, int size2)
1150 {
1151         int rc;
1152         ENTRY;
1153         LASSERT(OBP(exp->exp_obd, init_ea_size) != NULL);
1154         OBD_COUNTER_INCREMENT(exp->exp_obd, init_ea_size);
1155         rc = OBP(exp->exp_obd, init_ea_size)(exp, size, size2);
1156         RETURN(rc);
1157 }
1158
1159 static inline int md_getstatus(struct obd_export *exp, struct lustre_id *id)
1160 {
1161         int rc;
1162
1163         EXP_CHECK_MD_OP(exp, getstatus);
1164         MD_COUNTER_INCREMENT(exp->exp_obd, getstatus);
1165         rc = MDP(exp->exp_obd, getstatus)(exp, id);
1166         RETURN(rc);
1167 }
1168
1169 static inline int md_delete_inode(struct obd_export *exp,
1170                                   struct lustre_id *id)
1171 {
1172         int rc;
1173         ENTRY;
1174
1175         if (MDP(exp->exp_obd, delete_inode) == NULL)
1176                 RETURN(0);
1177
1178         MD_COUNTER_INCREMENT(exp->exp_obd, delete_inode);
1179         rc = MDP(exp->exp_obd, delete_inode)(exp, id);
1180         RETURN(rc);
1181 }
1182
1183 static inline int md_getattr(struct obd_export *exp, struct lustre_id *id,
1184                              __u64 valid, const char *xattr_name,
1185                              const void *xattr_data, unsigned int xattr_datalen,
1186                              unsigned int ea_size, struct obd_capa *ocapa,
1187                              struct ptlrpc_request **request)
1188 {
1189         int rc;
1190         ENTRY;
1191         EXP_CHECK_MD_OP(exp, getattr);
1192         MD_COUNTER_INCREMENT(exp->exp_obd, getattr);
1193         rc = MDP(exp->exp_obd, getattr)(exp, id, valid, xattr_name,
1194                                         xattr_data, xattr_datalen,
1195                                         ea_size, ocapa, request);
1196         RETURN(rc);
1197 }
1198
1199 static inline int md_access_check(struct obd_export *exp, struct lustre_id *id,
1200                                   struct ptlrpc_request **request)
1201 {
1202         int rc;
1203         ENTRY;
1204         EXP_CHECK_MD_OP(exp, access_check);
1205         MD_COUNTER_INCREMENT(exp->exp_obd, access_check);
1206         rc = MDP(exp->exp_obd, access_check)(exp, id, request);
1207         RETURN(rc);
1208 }
1209
1210 static inline int md_change_cbdata(struct obd_export *exp, struct lustre_id *id,
1211                                    ldlm_iterator_t it, void *data)
1212 {
1213         int rc;
1214         ENTRY;
1215         EXP_CHECK_MD_OP(exp, change_cbdata);
1216         MD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata);
1217         rc = MDP(exp->exp_obd, change_cbdata)(exp, id, it, data);
1218         RETURN(rc);
1219 }
1220
1221 static inline int md_change_cbdata_name(struct obd_export *exp,
1222                                         struct lustre_id *id, char *name,
1223                                         int namelen, struct lustre_id *id2,
1224                                         ldlm_iterator_t it, void *data)
1225 {
1226         int rc;
1227
1228         /* this seem to be needed only for lmv. */
1229         if (!MDP(exp->exp_obd, change_cbdata_name))
1230                 return 0;
1231
1232         ENTRY;
1233
1234         MD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata_name);
1235         rc = MDP(exp->exp_obd, change_cbdata_name)(exp, id, name, namelen,
1236                                                    id2, it, data);
1237         RETURN(rc);
1238 }
1239
1240 static inline int md_close(struct obd_export *exp,
1241                            struct mdc_op_data *op_data,
1242                            struct obd_client_handle *och,
1243                            struct ptlrpc_request **request)
1244 {
1245         int rc;
1246         ENTRY;
1247         EXP_CHECK_MD_OP(exp, close);
1248         MD_COUNTER_INCREMENT(exp->exp_obd, close);
1249         rc = MDP(exp->exp_obd, close)(exp, op_data, och, request);
1250         RETURN(rc);
1251 }
1252
1253 static inline int md_create(struct obd_export *exp, struct mdc_op_data *op_data,
1254                             const void *data, int datalen, int mode,
1255                             __u32 uid, __u32 gid, __u64 rdev,
1256                             struct ptlrpc_request **request)
1257 {
1258         int rc;
1259         ENTRY;
1260         EXP_CHECK_MD_OP(exp, create);
1261         MD_COUNTER_INCREMENT(exp->exp_obd, create);
1262         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1263                                        uid, gid, rdev, request);
1264         RETURN(rc);
1265 }
1266
1267 static inline int md_done_writing(struct obd_export *exp, struct obdo *obdo)
1268 {
1269         int rc;
1270         ENTRY;
1271         EXP_CHECK_MD_OP(exp, done_writing);
1272         MD_COUNTER_INCREMENT(exp->exp_obd, done_writing);
1273         rc = MDP(exp->exp_obd, done_writing)(exp, obdo);
1274         RETURN(rc);
1275 }
1276
1277 static inline int md_enqueue(struct obd_export *exp, int lock_type,
1278                              struct lookup_intent *it, int lock_mode,
1279                              struct mdc_op_data *data,
1280                              struct lustre_handle *lockh,
1281                              void *lmm, int lmmsize,
1282                              ldlm_completion_callback cb_completion,
1283                              ldlm_blocking_callback cb_blocking,
1284                              void *cb_data)
1285 {
1286         int rc;
1287         ENTRY;
1288         EXP_CHECK_MD_OP(exp, enqueue);
1289         MD_COUNTER_INCREMENT(exp->exp_obd, enqueue);
1290         rc = MDP(exp->exp_obd, enqueue)(exp, lock_type, it, lock_mode,
1291                                         data, lockh, lmm, lmmsize,
1292                                         cb_completion, cb_blocking,
1293                                         cb_data);
1294         RETURN(rc);
1295 }
1296
1297 static inline int md_getattr_lock(struct obd_export *exp, struct lustre_id *id,
1298                                   char *filename, int namelen,
1299                                   __u64 valid, unsigned int ea_size,
1300                                   struct ptlrpc_request **request)
1301 {
1302         int rc;
1303         ENTRY;
1304         EXP_CHECK_MD_OP(exp, getattr_lock);
1305         MD_COUNTER_INCREMENT(exp->exp_obd, getattr_lock);
1306         rc = MDP(exp->exp_obd, getattr_lock)(exp, id, filename, namelen,
1307                                              valid, ea_size, request);
1308         RETURN(rc);
1309 }
1310
1311 static inline int md_intent_lock(struct obd_export *exp,
1312                                  struct lustre_id *pid, const char *name,
1313                                  int len, void *lmm, int lmmsize,
1314                                  struct lustre_id *cid,
1315                                  struct lookup_intent *it,
1316                                  int flags, struct ptlrpc_request **reqp,
1317                                  ldlm_blocking_callback cb_blocking)
1318 {
1319         int rc;
1320         ENTRY;
1321         EXP_CHECK_MD_OP(exp, intent_lock);
1322         MD_COUNTER_INCREMENT(exp->exp_obd, intent_lock);
1323         rc = MDP(exp->exp_obd, intent_lock)(exp, pid, name, len, lmm,
1324                                             lmmsize, cid, it, flags,
1325                                             reqp, cb_blocking);
1326         RETURN(rc);
1327 }
1328
1329 static inline int md_link(struct obd_export *exp, struct mdc_op_data *data,
1330                           struct ptlrpc_request **request)
1331 {
1332         int rc;
1333         ENTRY;
1334         EXP_CHECK_MD_OP(exp, link);
1335         MD_COUNTER_INCREMENT(exp->exp_obd, link);
1336         rc = MDP(exp->exp_obd, link)(exp, data, request);
1337         RETURN(rc);
1338 }
1339
1340 static inline int md_rename(struct obd_export *exp, struct mdc_op_data *data,
1341                             const char *old, int oldlen,
1342                             const char *new, int newlen,
1343                             struct ptlrpc_request **request)
1344 {
1345         int rc;
1346         ENTRY;
1347         EXP_CHECK_MD_OP(exp, rename);
1348         MD_COUNTER_INCREMENT(exp->exp_obd, rename);
1349         rc = MDP(exp->exp_obd, rename)(exp, data, old, oldlen, new,
1350                                        newlen, request);
1351         RETURN(rc);
1352 }
1353
1354 static inline int md_setattr(struct obd_export *exp, struct mdc_op_data *data,
1355                              struct iattr *iattr, void *ea, int ealen,
1356                              void *ea2, int ea2len, void *ea3, int ea3len,
1357                              struct ptlrpc_request **request)
1358 {
1359         int rc;
1360         ENTRY;
1361         EXP_CHECK_MD_OP(exp, setattr);
1362         MD_COUNTER_INCREMENT(exp->exp_obd, setattr);
1363         rc = MDP(exp->exp_obd, setattr)(exp, data, iattr, ea, ealen,
1364                                         ea2, ea2len, ea3, ea3len, request);
1365         RETURN(rc);
1366 }
1367
1368 static inline int md_sync(struct obd_export *exp, struct lustre_id *id,
1369                                struct ptlrpc_request **request)
1370 {
1371         int rc;
1372         ENTRY;
1373         EXP_CHECK_MD_OP(exp, sync);
1374         MD_COUNTER_INCREMENT(exp->exp_obd, sync);
1375         rc = MDP(exp->exp_obd, sync)(exp, id, request);
1376         RETURN(rc);
1377 }
1378
1379 static inline int md_readpage(struct obd_export *exp, struct lustre_id *id,
1380                               __u64 offset, struct page *page,
1381                               struct ptlrpc_request **request)
1382 {
1383         int rc;
1384         ENTRY;
1385         EXP_CHECK_MD_OP(exp, readpage);
1386         MD_COUNTER_INCREMENT(exp->exp_obd, readpage);
1387         rc = MDP(exp->exp_obd, readpage)(exp, id, offset, page, request);
1388         RETURN(rc);
1389 }
1390
1391 static inline int md_unlink(struct obd_export *exp, struct mdc_op_data *data,
1392                             struct ptlrpc_request **request)
1393 {
1394         int rc;
1395         ENTRY;
1396         EXP_CHECK_MD_OP(exp, unlink);
1397         MD_COUNTER_INCREMENT(exp->exp_obd, unlink);
1398         rc = MDP(exp->exp_obd, unlink)(exp, data, request);
1399         RETURN(rc);
1400 }
1401
1402 static inline struct obd_device *md_get_real_obd(struct obd_export *exp,
1403                                                  struct lustre_id *fid)
1404 {
1405         ENTRY;
1406         if (MDP(exp->exp_obd, get_real_obd) == NULL)
1407                 return exp->exp_obd;
1408         MD_COUNTER_INCREMENT(exp->exp_obd, get_real_obd);
1409         return MDP(exp->exp_obd, get_real_obd)(exp, fid);
1410 }
1411
1412 static inline int md_valid_attrs(struct obd_export *exp,
1413                                  struct lustre_id *id)
1414 {
1415         ENTRY;
1416         EXP_CHECK_MD_OP(exp, valid_attrs);
1417         MD_COUNTER_INCREMENT(exp->exp_obd, valid_attrs);
1418         return MDP(exp->exp_obd, valid_attrs)(exp, id);
1419 }
1420
1421 static inline int md_req2lustre_md(struct obd_export *exp,
1422                                    struct ptlrpc_request *req,
1423                                    unsigned int offset,
1424                                    struct obd_export *osc_exp,
1425                                    struct lustre_md *md)
1426 {
1427         ENTRY;
1428         EXP_CHECK_MD_OP(exp, req2lustre_md);
1429         MD_COUNTER_INCREMENT(exp->exp_obd, req2lustre_md);
1430         return MDP(exp->exp_obd, req2lustre_md)(exp, req, offset, osc_exp, md);
1431 }
1432
1433 static inline int md_set_open_replay_data(struct obd_export *exp,
1434                                           struct obd_client_handle *och,
1435                                           struct ptlrpc_request *open_req)
1436 {
1437         ENTRY;
1438         EXP_CHECK_MD_OP(exp, set_open_replay_data);
1439         MD_COUNTER_INCREMENT(exp->exp_obd, set_open_replay_data);
1440         return MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req);
1441 }
1442
1443 static inline int md_clear_open_replay_data(struct obd_export *exp,
1444                                             struct obd_client_handle *och)
1445 {
1446         ENTRY;
1447         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
1448         MD_COUNTER_INCREMENT(exp->exp_obd, clear_open_replay_data);
1449         return MDP(exp->exp_obd, clear_open_replay_data)(exp, och);
1450 }
1451
1452 static inline int md_store_inode_generation(struct obd_export *exp,
1453                                             struct ptlrpc_request *req,
1454                                             int reqoff, int repoff)
1455 {
1456         ENTRY;
1457         EXP_CHECK_MD_OP(exp, store_inode_generation);
1458         MD_COUNTER_INCREMENT(exp->exp_obd, store_inode_generation);
1459         return MDP(exp->exp_obd, store_inode_generation)(exp, req,
1460                    reqoff, repoff);
1461 }
1462
1463 static inline int md_set_lock_data(struct obd_export *exp, __u64 *l,
1464                                    void *data)
1465 {
1466         ENTRY;
1467         EXP_CHECK_MD_OP(exp, set_lock_data);
1468         MD_COUNTER_INCREMENT(exp->exp_obd, set_lock_data);
1469         return MDP(exp->exp_obd, set_lock_data)(exp, l, data);
1470 }
1471
1472 /* OBD Metadata Support */
1473
1474 extern int obd_init_caches(void);
1475 extern void obd_cleanup_caches(void);
1476
1477 /* support routines */
1478 extern kmem_cache_t *obdo_cachep;
1479 static inline struct obdo *obdo_alloc(void)
1480 {
1481         struct obdo *oa;
1482
1483         OBD_SLAB_ALLOC(oa, obdo_cachep, GFP_KERNEL,
1484                        sizeof(*oa));
1485         return oa;
1486 }
1487
1488 static inline void obdo_free(struct obdo *oa)
1489 {
1490         OBD_SLAB_FREE(oa, obdo_cachep, sizeof(*oa));
1491 }
1492
1493 static inline void obdo2id(struct lustre_id *id,
1494                            struct obdo *oa)
1495 {
1496         LASSERT(oa && id);
1497         id_ino(id) = oa->o_id;
1498         id_fid(id) = oa->o_fid;
1499         id_group(id) = oa->o_mds;
1500         id_gen(id) = oa->o_generation;
1501 }
1502
1503 static inline void id2obdo(struct obdo *oa,
1504                            struct lustre_id *id)
1505 {
1506         LASSERT(oa && id);
1507         oa->o_id = id_ino(id);
1508         oa->o_fid = id_fid(id);
1509         oa->o_mds = id_group(id);
1510         oa->o_generation = id_gen(id);
1511 }
1512
1513 #if !defined(__KERNEL__) || (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
1514 #define to_kdev_t(dev) dev
1515 #define kdev_t_to_nr(dev) dev
1516 #endif
1517
1518 /* I'm as embarrassed about this as you are.
1519  *
1520  * <shaver> // XXX do not look into _superhack with remaining eye
1521  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
1522 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
1523 extern void (*ptlrpc_abort_inflight_superhack)(struct obd_import *imp);
1524
1525 /* sysctl.c */
1526 extern void obd_sysctl_init (void);
1527 extern void obd_sysctl_clean (void);
1528
1529 /* uuid.c  */
1530 typedef __u8 class_uuid_t[16];
1531 //int class_uuid_parse(struct obd_uuid in, class_uuid_t out);
1532 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
1533
1534 /* lustre_peer.c    */
1535 int lustre_uuid_to_peer(char *uuid, __u32 *peer_nal, ptl_nid_t *peer_nid);
1536 int class_add_uuid(char *uuid, __u64 nid, __u32 nal);
1537 int class_del_uuid (char *uuid);
1538 void class_init_uuidlist(void);
1539 void class_exit_uuidlist(void);
1540
1541 /* mea.c */
1542 int mea_name2idx(struct mea *mea, char *name, int namelen);
1543 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
1544
1545 #endif /* __LINUX_OBD_CLASS_H */