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 #define CFG_MODIFY_UUID_FL 0x00001
  88 struct config_llog_instance {
  89         char *cfg_instance;
  90         struct obd_uuid cfg_uuid;
  91         ptl_nid_t cfg_local_nid;
  92         int  cfg_flags;
  93 };
  94
  95 int class_config_process_llog(struct llog_ctxt *ctxt, char *name,
  96                               struct config_llog_instance *cfg);
  97 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
  98                            struct config_llog_instance *cfg);
  99
 100 struct lustre_profile {
 101         struct list_head lp_list;
 102         char *lp_profile;
 103         char *lp_lov;
 104         char *lp_lmv;
 105         char *lp_gkc;
 106 };
 107
 108 struct lustre_profile *class_get_profile(char * prof);
 109 void class_del_profile(char *prof);
 110
 111 #define class_export_rpc_get(exp)                                       \
 112 ({                                                                      \
 113         atomic_inc(&(exp)->exp_rpc_count);                              \
 114         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",    \
 115                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 116         class_export_get(exp);                                          \
 117 })
 118
 119 #define class_export_rpc_put(exp)                                       \
 120 ({                                                                      \
 121         atomic_dec(&(exp)->exp_rpc_count);                              \
 122         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",    \
 123                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 124         class_export_put(exp);                                          \
 125 })
 126
 127 #define class_export_get(exp)                                                  \
 128 ({                                                                             \
 129         struct obd_export *exp_ = exp;                                         \
 130         atomic_inc(&exp_->exp_refcount);                                       \
 131         CDEBUG(D_INFO, "GETting export %p : new refcount %d\n", exp_,          \
 132                atomic_read(&exp_->exp_refcount));                              \
 133         exp_;                                                                  \
 134 })
 135
 136 #define class_export_put(exp)                                                  \
 137 do {                                                                           \
 138         LASSERT((exp) != NULL);                                                \
 139         CDEBUG(D_INFO, "PUTting export %p : new refcount %d\n", (exp),         \
 140                atomic_read(&(exp)->exp_refcount) - 1);                         \
 141         LASSERT(atomic_read(&(exp)->exp_refcount) > 0);                        \
 142         LASSERT(atomic_read(&(exp)->exp_refcount) < 0x5a5a5a);                 \
 143         __class_export_put(exp);                                               \
 144 } while (0)
 145
 146 void __class_export_put(struct obd_export *);
 147 struct obd_export *class_new_export(struct obd_device *obddev);
 148 void class_unlink_export(struct obd_export *exp);
 149
 150 struct obd_import *class_import_get(struct obd_import *);
 151 void class_import_put(struct obd_import *);
 152 struct obd_import *class_new_import(void);
 153 void class_destroy_import(struct obd_import *exp);
 154
 155 struct obd_type *class_get_type(char *name);
 156 void class_put_type(struct obd_type *type);
 157 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 158                   struct obd_uuid *cluuid);
 159 int class_disconnect(struct obd_export *exp, unsigned long flags);
 160 void class_disconnect_exports(struct obd_device *, unsigned long);
 161 int class_disconnect_stale_exports(struct obd_device *,
 162                                    int (*test_export)(struct obd_export *),
 163                                    unsigned long);
 164
 165 /* generic operations shared by various OBD types */
 166 int class_multi_setup(struct obd_device *obddev, uint32_t len, void *data);
 167 int class_multi_cleanup(struct obd_device *obddev);
 168
 169 /* obdo.c */
 170 #ifdef __KERNEL__
 171 void obdo_from_iattr(struct obdo *oa, struct iattr *attr, unsigned ia_valid);
 172 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, obd_valid valid);
 173 void obdo_from_inode(struct obdo *dst, struct inode *src, obd_valid valid);
 174 void obdo_refresh_inode(struct inode *dst, struct obdo *src, obd_valid valid);
 175 void obdo_to_inode(struct inode *dst, struct obdo *src, obd_valid valid);
 176 #endif
 177 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_valid valid);
 178 int obdo_cmp_md(struct obdo *dst, struct obdo *src, obd_valid compare);
 179 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
 180
 181 #define OBT(dev)        (dev)->obd_type
 182 #define OBP(dev, op)    (dev)->obd_type->typ_ops->o_ ## op
 183 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
 184 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 185
 186 /* Ensure obd_setup: used for cleanup which must be called
 187    while obd is stopping */
 188 #define OBD_CHECK_DEV(obd)                                      \
 189 do {                                                            \
 190         if (!(obd)) {                                           \
 191                 CERROR("NULL device\n");                        \
 192                 RETURN(-ENODEV);                                \
 193         }                                                       \
 194 } while (0)
 195
 196 #define OBD_CHECK_DEV_STOPPING(obd)                             \
 197 do {                                                            \
 198         OBD_CHECK_DEV(obd);                                     \
 199         if (!(obd)->obd_set_up) {                               \
 200                 CERROR("Device %d not setup\n",                 \
 201                        (obd)->obd_minor);                       \
 202                 RETURN(-ENODEV);                                \
 203         }                                                       \
 204                                                                 \
 205         if (!(obd)->obd_stopping) {                             \
 206                 CERROR("Device %d not stopping\n",              \
 207                        (obd)->obd_minor);                       \
 208                 RETURN(-ENODEV);                                \
 209         }                                                       \
 210 } while (0)
 211
 212 /* ensure obd_setup and !obd_stopping */
 213 #define OBD_CHECK_DEV_ACTIVE(obd)                               \
 214 do {                                                            \
 215         OBD_CHECK_DEV(obd);                                     \
 216         if (!(obd)->obd_set_up || (obd)->obd_stopping) {        \
 217                 CERROR("Device %d not setup\n",                 \
 218                        (obd)->obd_minor);                       \
 219                 RETURN(-ENODEV);                                \
 220         }                                                       \
 221 } while (0)
 222
 223
 224 #ifdef LPROCFS
 225 #define OBD_COUNTER_OFFSET(op)                                  \
 226         ((offsetof(struct obd_ops, o_ ## op) -                  \
 227           offsetof(struct obd_ops, o_iocontrol))                \
 228          / sizeof(((struct obd_ops *)(0))->o_iocontrol))
 229
 230 #define OBD_COUNTER_INCREMENT(obd, op)                          \
 231         if ((obd)->obd_stats != NULL) {                         \
 232                 unsigned int coffset;                           \
 233                 coffset = (unsigned int)(obd)->obd_cntr_base +  \
 234                         OBD_COUNTER_OFFSET(op);                 \
 235                 LASSERT(coffset < (obd)->obd_stats->ls_num);    \
 236                 lprocfs_counter_incr((obd)->obd_stats, coffset);\
 237         }
 238
 239 #define MD_COUNTER_OFFSET(op)                                  \
 240         ((offsetof(struct md_ops, m_ ## op) -                  \
 241           offsetof(struct md_ops, m_getstatus))                \
 242          / sizeof(((struct md_ops *)(0))->m_getstatus))
 243
 244 #define MD_COUNTER_INCREMENT(obd, op)                           \
 245         if ((obd)->md_stats != NULL) {                          \
 246                 unsigned int coffset;                           \
 247                 coffset = (unsigned int)(obd)->md_cntr_base +   \
 248                         MD_COUNTER_OFFSET(op);                  \
 249                 LASSERT(coffset < (obd)->md_stats->ls_num);     \
 250                 lprocfs_counter_incr((obd)->md_stats, coffset); \
 251         }
 252
 253 #else
 254 #define OBD_COUNTER_OFFSET(op)
 255 #define OBD_COUNTER_INCREMENT(obd, op)
 256 #define MD_COUNTER_INCREMENT(obd, op)
 257 #endif
 258
 259 #define OBD_CHECK_MD_OP(obd, op, err)                           \
 260 do {                                                            \
 261         if (!OBT(obd) || !MDP((obd), op)) {\
 262                 if (err)                                        \
 263                         CERROR("md_" #op ": dev %s/%d no operation\n", \
 264                                obd->obd_name, obd->obd_minor);  \
 265                 RETURN(err);                                    \
 266         }                                                       \
 267 } while (0)
 268
 269 #define EXP_CHECK_MD_OP(exp, op)                                \
 270 do {                                                            \
 271         if ((exp) == NULL) {                                    \
 272                 CERROR("obd_" #op ": NULL export\n");           \
 273                 portals_debug_dumplog();                        \
 274                 RETURN(-ENODEV);                                \
 275         }                                                       \
 276         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 277                 CERROR("obd_" #op ": cleaned up obd\n");        \
 278                 RETURN(-EOPNOTSUPP);                            \
 279         }                                                       \
 280         if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
 281                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 282                        (exp)->exp_obd->obd_name,                \
 283                        (exp)->exp_obd->obd_minor);              \
 284                 RETURN(-EOPNOTSUPP);                            \
 285         }                                                       \
 286 } while (0)
 287
 288 #define OBD_CHECK_OP(obd, op, err)                              \
 289 do {                                                            \
 290         if (!OBT(obd) || !OBP((obd), op)) {\
 291                 if (err)                                        \
 292                         CERROR("obd_" #op ": dev %s/%d no operation\n", \
 293                                obd->obd_name, obd->obd_minor);  \
 294                 RETURN(err);                                    \
 295         }                                                       \
 296 } while (0)
 297
 298 #define EXP_CHECK_OP(exp, op)                                   \
 299 do {                                                            \
 300         if ((exp) == NULL) {                                    \
 301                 CERROR("obd_" #op ": NULL export\n");           \
 302                 portals_debug_dumplog();                        \
 303                 RETURN(-ENODEV);                                \
 304         }                                                       \
 305         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 306                 CERROR("obd_" #op ": cleaned up obd\n");        \
 307                 RETURN(-EOPNOTSUPP);                            \
 308         }                                                       \
 309         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 310                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 311                        (exp)->exp_obd->obd_name,                \
 312                        (exp)->exp_obd->obd_minor);              \
 313                 RETURN(-EOPNOTSUPP);                            \
 314         }                                                       \
 315 } while (0)
 316
 317 #define CTXT_CHECK_OP(ctxt, op, err)                            \
 318 do {                                                            \
 319         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {        \
 320                 if (err)                                        \
 321                         CERROR("lop_" #op ": dev %d no operation\n",    \
 322                                ctxt->loc_obd->obd_minor);               \
 323                 RETURN(err);                                    \
 324         }                                                       \
 325 } while (0)
 326
 327 static inline int obd_get_info(struct obd_export *exp, __u32 keylen,
 328                                void *key, __u32 *vallen, void *val)
 329 {
 330         int rc;
 331         ENTRY;
 332
 333         EXP_CHECK_OP(exp, get_info);
 334         OBD_COUNTER_INCREMENT(exp->exp_obd, get_info);
 335
 336         rc = OBP(exp->exp_obd, get_info)(exp, keylen, key, vallen, val);
 337         RETURN(rc);
 338 }
 339
 340 static inline int obd_set_info(struct obd_export *exp, obd_count keylen,
 341                                void *key, obd_count vallen, void *val)
 342 {
 343         int rc;
 344         ENTRY;
 345
 346         EXP_CHECK_OP(exp, set_info);
 347         OBD_COUNTER_INCREMENT(exp->exp_obd, set_info);
 348
 349         rc = OBP(exp->exp_obd, set_info)(exp, keylen, key, vallen, val);
 350         RETURN(rc);
 351 }
 352
 353 static inline int obd_setup(struct obd_device *obd, int datalen, void *data)
 354 {
 355         int rc;
 356         ENTRY;
 357
 358         OBD_CHECK_OP(obd, setup, -EOPNOTSUPP);
 359         OBD_COUNTER_INCREMENT(obd, setup);
 360
 361         rc = OBP(obd, setup)(obd, datalen, data);
 362         RETURN(rc);
 363 }
 364
 365 static inline int obd_precleanup(struct obd_device *obd, int flags)
 366 {
 367         int rc;
 368         ENTRY;
 369
 370         OBD_CHECK_OP(obd, precleanup, 0);
 371         OBD_COUNTER_INCREMENT(obd, precleanup);
 372
 373         rc = OBP(obd, precleanup)(obd, flags);
 374         RETURN(rc);
 375 }
 376
 377 static inline int obd_cleanup(struct obd_device *obd, int flags)
 378 {
 379         int rc;
 380         ENTRY;
 381
 382         OBD_CHECK_DEV_STOPPING(obd);
 383         OBD_CHECK_OP(obd, cleanup, 0);
 384         OBD_COUNTER_INCREMENT(obd, cleanup);
 385
 386         rc = OBP(obd, cleanup)(obd, flags);
 387         RETURN(rc);
 388 }
 389
 390 static inline int
 391 obd_process_config(struct obd_device *obd, int datalen, void *data)
 392 {
 393         int rc;
 394         ENTRY;
 395
 396         OBD_CHECK_OP(obd, process_config, -EOPNOTSUPP);
 397         OBD_COUNTER_INCREMENT(obd, process_config);
 398
 399         rc = OBP(obd, process_config)(obd, datalen, data);
 400         RETURN(rc);
 401 }
 402
 403 /* Pack an in-memory MD struct for storage on disk.
 404  * Returns +ve size of packed MD (0 for free), or -ve error.
 405  *
 406  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 407  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 408  * If @*disk_tgt == NULL, it will be allocated
 409  */
 410 static inline int obd_packmd(struct obd_export *exp,
 411                              struct lov_mds_md **disk_tgt,
 412                              struct lov_stripe_md *mem_src)
 413 {
 414         int rc;
 415         ENTRY;
 416
 417         EXP_CHECK_OP(exp, packmd);
 418         OBD_COUNTER_INCREMENT(exp->exp_obd, packmd);
 419
 420         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 421         RETURN(rc);
 422 }
 423
 424 static inline int obd_size_diskmd(struct obd_export *exp,
 425                                   struct lov_stripe_md *mem_src)
 426 {
 427         return obd_packmd(exp, NULL, mem_src);
 428 }
 429
 430 /* helper functions */
 431 static inline int obd_alloc_diskmd(struct obd_export *exp,
 432                                    struct lov_mds_md **disk_tgt)
 433 {
 434         LASSERT(disk_tgt);
 435         LASSERT(*disk_tgt == NULL);
 436         return obd_packmd(exp, disk_tgt, NULL);
 437 }
 438
 439 static inline int obd_free_diskmd(struct obd_export *exp,
 440                                   struct lov_mds_md **disk_tgt)
 441 {
 442         LASSERT(disk_tgt);
 443         LASSERT(*disk_tgt);
 444         return obd_packmd(exp, disk_tgt, NULL);
 445 }
 446
 447 /* Unpack an MD struct from disk to in-memory format.
 448  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 449  *
 450  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 451  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 452  * If @*mem_tgt == NULL, it will be allocated
 453  */
 454 static inline int obd_unpackmd(struct obd_export *exp,
 455                                struct lov_stripe_md **mem_tgt,
 456                                struct lov_mds_md *disk_src,
 457                                int disk_len)
 458 {
 459         int rc;
 460         ENTRY;
 461
 462         EXP_CHECK_OP(exp, unpackmd);
 463         OBD_COUNTER_INCREMENT(exp->exp_obd, unpackmd);
 464
 465         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 466         RETURN(rc);
 467 }
 468
 469 /* helper functions */
 470 static inline int obd_alloc_memmd(struct obd_export *exp,
 471                                   struct lov_stripe_md **mem_tgt)
 472 {
 473         LASSERT(mem_tgt);
 474         LASSERT(*mem_tgt == NULL);
 475         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 476 }
 477
 478 static inline int obd_free_memmd(struct obd_export *exp,
 479                                  struct lov_stripe_md **mem_tgt)
 480 {
 481         LASSERT(mem_tgt);
 482         LASSERT(*mem_tgt);
 483         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 484 }
 485
 486 static inline int obd_revalidate_md(struct obd_export *exp, struct obdo *obdo,
 487                                     struct lov_stripe_md *ea,
 488                                     struct obd_trans_info *oti)
 489 {
 490         int rc;
 491         ENTRY;
 492
 493         EXP_CHECK_OP(exp, revalidate_md);
 494         OBD_COUNTER_INCREMENT(exp->exp_obd, revalidate_md);
 495
 496         rc = OBP(exp->exp_obd, revalidate_md)(exp, obdo, ea, oti);
 497         RETURN(rc);
 498 }
 499
 500 static inline int obd_create(struct obd_export *exp, struct obdo *obdo,
 501                              void *acl, int acl_size,
 502                              struct lov_stripe_md **ea,
 503                              struct obd_trans_info *oti)
 504 {
 505         int rc;
 506         ENTRY;
 507
 508         EXP_CHECK_OP(exp, create);
 509         OBD_COUNTER_INCREMENT(exp->exp_obd, create);
 510
 511         rc = OBP(exp->exp_obd, create)(exp, obdo, acl, acl_size, ea, oti);
 512         RETURN(rc);
 513 }
 514
 515 static inline int obd_destroy(struct obd_export *exp, struct obdo *obdo,
 516                               struct lov_stripe_md *ea,
 517                               struct obd_trans_info *oti)
 518 {
 519         int rc;
 520         ENTRY;
 521
 522         EXP_CHECK_OP(exp, destroy);
 523         OBD_COUNTER_INCREMENT(exp->exp_obd, destroy);
 524
 525         rc = OBP(exp->exp_obd, destroy)(exp, obdo, ea, oti);
 526         RETURN(rc);
 527 }
 528
 529 static inline int obd_getattr(struct obd_export *exp, struct obdo *obdo,
 530                               struct lov_stripe_md *ea)
 531 {
 532         int rc;
 533         ENTRY;
 534
 535         EXP_CHECK_OP(exp, getattr);
 536         OBD_COUNTER_INCREMENT(exp->exp_obd, getattr);
 537
 538         rc = OBP(exp->exp_obd, getattr)(exp, obdo, ea);
 539         RETURN(rc);
 540 }
 541
 542 static inline int obd_getattr_async(struct obd_export *exp,
 543                                     struct obdo *obdo, struct lov_stripe_md *ea,
 544                                     struct ptlrpc_request_set *set)
 545 {
 546         int rc;
 547         ENTRY;
 548
 549         EXP_CHECK_OP(exp, getattr);
 550         OBD_COUNTER_INCREMENT(exp->exp_obd, getattr);
 551
 552         rc = OBP(exp->exp_obd, getattr_async)(exp, obdo, ea, set);
 553         RETURN(rc);
 554 }
 555
 556 static inline int obd_setattr(struct obd_export *exp, struct obdo *obdo,
 557                               struct lov_stripe_md *ea,
 558                               struct obd_trans_info *oti,
 559                               struct lustre_capa *capa)
 560 {
 561         int rc;
 562         ENTRY;
 563
 564         EXP_CHECK_OP(exp, setattr);
 565         OBD_COUNTER_INCREMENT(exp->exp_obd, setattr);
 566
 567         rc = OBP(exp->exp_obd, setattr)(exp, obdo, ea, oti, capa);
 568         RETURN(rc);
 569 }
 570 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 571                                int priority)
 572 {
 573         struct obd_device *obd = imp->imp_obd;
 574         int rc;
 575         ENTRY;
 576
 577         OBD_CHECK_DEV_ACTIVE(obd);
 578         OBD_CHECK_OP(obd, add_conn, -EOPNOTSUPP);
 579         OBD_COUNTER_INCREMENT(obd, add_conn);
 580
 581         rc = OBP(obd, add_conn)(imp, uuid, priority);
 582         RETURN(rc);
 583 }
 584
 585 static inline int obd_del_conn(struct obd_import *imp,
 586                                struct obd_uuid *uuid)
 587 {
 588         struct obd_device *obd = imp->imp_obd;
 589         int rc;
 590         ENTRY;
 591
 592         OBD_CHECK_DEV_ACTIVE(obd);
 593         OBD_CHECK_OP(obd, del_conn, -EOPNOTSUPP);
 594         OBD_COUNTER_INCREMENT(obd, del_conn);
 595
 596         rc = OBP(obd, del_conn)(imp, uuid);
 597         RETURN(rc);
 598 }
 599
 600
 601 static inline int obd_connect(struct lustre_handle *conn,
 602                               struct obd_device *obd,
 603                               struct obd_uuid *cluuid,
 604                               struct obd_connect_data *data,
 605                               unsigned long flags)
 606 {
 607         int rc;
 608         ENTRY;
 609
 610         OBD_CHECK_DEV_ACTIVE(obd);
 611         OBD_CHECK_OP(obd, connect, -EOPNOTSUPP);
 612         OBD_COUNTER_INCREMENT(obd, connect);
 613
 614         rc = OBP(obd, connect)(conn, obd, cluuid, data, flags);
 615         RETURN(rc);
 616 }
 617
 618 static inline int obd_connect_post(struct obd_export *exp,
 619                                    unsigned initial,
 620                                    unsigned long flags)
 621 {
 622         int rc;
 623         ENTRY;
 624
 625         OBD_CHECK_DEV_ACTIVE(exp->exp_obd);
 626         if (!OBT(exp->exp_obd) || !OBP((exp->exp_obd), connect_post))
 627                 RETURN(0);
 628         OBD_COUNTER_INCREMENT(exp->exp_obd, connect_post);
 629         rc = OBP(exp->exp_obd, connect_post)(exp, initial, flags);
 630         RETURN(rc);
 631 }
 632
 633 static inline int obd_disconnect(struct obd_export *exp,
 634                                  unsigned long flags)
 635 {
 636         int rc;
 637         ENTRY;
 638
 639         EXP_CHECK_OP(exp, disconnect);
 640         OBD_COUNTER_INCREMENT(exp->exp_obd, disconnect);
 641
 642         rc = OBP(exp->exp_obd, disconnect)(exp, flags);
 643         RETURN(rc);
 644 }
 645
 646 static inline int obd_init_export(struct obd_export *exp)
 647 {
 648         int rc = 0;
 649
 650         ENTRY;
 651         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 652             OBP((exp)->exp_obd, init_export))
 653                 rc = OBP(exp->exp_obd, init_export)(exp);
 654         RETURN(rc);
 655 }
 656
 657 static inline int obd_destroy_export(struct obd_export *exp)
 658 {
 659         ENTRY;
 660         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 661             OBP((exp)->exp_obd, destroy_export))
 662                 OBP(exp->exp_obd, destroy_export)(exp);
 663         RETURN(0);
 664 }
 665
 666 static inline struct dentry *
 667 obd_lvfs_id2dentry(struct obd_export *exp, __u64 ino,
 668                    __u32 gen, __u64 gr)
 669 {
 670         LASSERT(exp->exp_obd);
 671
 672         return lvfs_id2dentry(&exp->exp_obd->obd_lvfs_ctxt,
 673                               ino, gen, gr, exp->exp_obd);
 674 }
 675
 676 #ifndef time_before
 677 #define time_before(t1, t2) ((long)t2 - (long)t1 > 0)
 678 #endif
 679
 680 /* @max_age is the oldest time in jiffies that we accept using a cached data.
 681  * If the cache is older than @max_age we will get a new value from the
 682  * target.  Use a value of "jiffies + HZ" to guarantee freshness. */
 683 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
 684                              unsigned long max_age)
 685 {
 686         int rc = 0;
 687         ENTRY;
 688
 689         if (obd == NULL)
 690                 RETURN(-EINVAL);
 691
 692         OBD_CHECK_OP(obd, statfs, -EOPNOTSUPP);
 693         OBD_COUNTER_INCREMENT(obd, statfs);
 694
 695         CDEBUG(D_SUPER, "osfs %lu, max_age %lu\n", obd->obd_osfs_age, max_age);
 696         if (time_before(obd->obd_osfs_age, max_age)) {
 697                 rc = OBP(obd, statfs)(obd, osfs, max_age);
 698                 if (rc == 0) {
 699                         spin_lock(&obd->obd_osfs_lock);
 700                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
 701                         obd->obd_osfs_age = jiffies;
 702                         spin_unlock(&obd->obd_osfs_lock);
 703                 }
 704         } else {
 705                 CDEBUG(D_SUPER, "using cached obd_statfs data\n");
 706                 spin_lock(&obd->obd_osfs_lock);
 707                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
 708                 spin_unlock(&obd->obd_osfs_lock);
 709         }
 710         RETURN(rc);
 711 }
 712
 713 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
 714                            struct lov_stripe_md *ea, obd_size start,
 715                            obd_size end)
 716 {
 717         int rc;
 718         ENTRY;
 719
 720         OBD_CHECK_OP(exp->exp_obd, sync, -EOPNOTSUPP);
 721         OBD_COUNTER_INCREMENT(exp->exp_obd, sync);
 722
 723         rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end);
 724         RETURN(rc);
 725 }
 726
 727 static inline int obd_punch(struct obd_export *exp, struct obdo *oa,
 728                             struct lov_stripe_md *ea, obd_size start,
 729                             obd_size end, struct obd_trans_info *oti,
 730                             struct lustre_capa *capa)
 731 {
 732         int rc;
 733         ENTRY;
 734
 735         EXP_CHECK_OP(exp, punch);
 736         OBD_COUNTER_INCREMENT(exp->exp_obd, punch);
 737
 738         rc = OBP(exp->exp_obd, punch)(exp, oa, ea, start, end, oti, capa);
 739         RETURN(rc);
 740 }
 741
 742 static inline int obd_brw(int cmd, struct obd_export *exp, struct obdo *oa,
 743                           struct lov_stripe_md *ea, obd_count oa_bufs,
 744                           struct brw_page *pg, struct obd_trans_info *oti)
 745 {
 746         int rc;
 747         ENTRY;
 748
 749         EXP_CHECK_OP(exp, brw);
 750         OBD_COUNTER_INCREMENT(exp->exp_obd, brw);
 751
 752         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
 753                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
 754                        "or OBD_BRW_CHECK\n");
 755                 LBUG();
 756         }
 757
 758         rc = OBP(exp->exp_obd, brw)(cmd, exp, oa, ea, oa_bufs, pg, oti);
 759         RETURN(rc);
 760 }
 761
 762 static inline int obd_brw_async(int cmd, struct obd_export *exp,
 763                                 struct obdo *oa, struct lov_stripe_md *ea,
 764                                 obd_count oa_bufs, struct brw_page *pg,
 765                                 struct ptlrpc_request_set *set,
 766                                 struct obd_trans_info *oti)
 767 {
 768         int rc;
 769         ENTRY;
 770
 771         EXP_CHECK_OP(exp, brw_async);
 772         OBD_COUNTER_INCREMENT(exp->exp_obd, brw_async);
 773
 774         if (!(cmd & OBD_BRW_RWMASK)) {
 775                 CERROR("obd_brw: cmd must be OBD_BRW_READ or OBD_BRW_WRITE\n");
 776                 LBUG();
 777         }
 778
 779         rc = OBP(exp->exp_obd, brw_async)(cmd, exp, oa, ea, oa_bufs, pg, set,
 780                                           oti);
 781         RETURN(rc);
 782 }
 783
 784 static inline int obd_prep_async_page(struct obd_export *exp,
 785                                       struct lov_stripe_md *lsm,
 786                                       struct lov_oinfo *loi,
 787                                       struct page *page, obd_off offset,
 788                                       struct obd_async_page_ops *ops,
 789                                       void *data, void **res)
 790 {
 791         int ret;
 792         ENTRY;
 793
 794         OBD_CHECK_OP(exp->exp_obd, prep_async_page, -EOPNOTSUPP);
 795         OBD_COUNTER_INCREMENT(exp->exp_obd, prep_async_page);
 796
 797         ret = OBP(exp->exp_obd, prep_async_page)(exp, lsm, loi, page, offset,
 798                                                  ops, data, res);
 799         RETURN(ret);
 800 }
 801
 802 static inline int obd_queue_async_io(struct obd_export *exp,
 803                                      struct lov_stripe_md *lsm,
 804                                      struct lov_oinfo *loi, void *cookie,
 805                                      int cmd, obd_off off, int count,
 806                                      obd_flags brw_flags, obd_flags async_flags)
 807 {
 808         int rc;
 809         ENTRY;
 810
 811         OBD_CHECK_OP(exp->exp_obd, queue_async_io, -EOPNOTSUPP);
 812         OBD_COUNTER_INCREMENT(exp->exp_obd, queue_async_io);
 813         LASSERT(cmd & OBD_BRW_RWMASK);
 814
 815         rc = OBP(exp->exp_obd, queue_async_io)(exp, lsm, loi, cookie, cmd, off,
 816                                                count, brw_flags, async_flags);
 817         RETURN(rc);
 818 }
 819
 820 static inline int obd_set_async_flags(struct obd_export *exp,
 821                                       struct lov_stripe_md *lsm,
 822                                       struct lov_oinfo *loi, void *cookie,
 823                                       obd_flags async_flags)
 824 {
 825         int rc;
 826         ENTRY;
 827
 828         OBD_CHECK_OP(exp->exp_obd, set_async_flags, -EOPNOTSUPP);
 829         OBD_COUNTER_INCREMENT(exp->exp_obd, set_async_flags);
 830
 831         rc = OBP(exp->exp_obd, set_async_flags)(exp, lsm, loi, cookie,
 832                                                 async_flags);
 833         RETURN(rc);
 834 }
 835
 836 static inline int obd_queue_group_io(struct obd_export *exp,
 837                                      struct lov_stripe_md *lsm,
 838                                      struct lov_oinfo *loi,
 839                                      struct obd_io_group *oig,
 840                                      void *cookie, int cmd, obd_off off,
 841                                      int count, obd_flags brw_flags,
 842                                      obd_flags async_flags)
 843 {
 844         int rc;
 845         ENTRY;
 846
 847         OBD_CHECK_OP(exp->exp_obd, queue_group_io, -EOPNOTSUPP);
 848         OBD_COUNTER_INCREMENT(exp->exp_obd, queue_group_io);
 849         LASSERT(cmd & OBD_BRW_RWMASK);
 850
 851         rc = OBP(exp->exp_obd, queue_group_io)(exp, lsm, loi, oig, cookie,
 852                                                cmd, off, count, brw_flags,
 853                                                async_flags);
 854         RETURN(rc);
 855 }
 856
 857 static inline int obd_trigger_group_io(struct obd_export *exp,
 858                                        struct lov_stripe_md *lsm,
 859                                        struct lov_oinfo *loi,
 860                                        struct obd_io_group *oig)
 861 {
 862         int rc;
 863         ENTRY;
 864
 865         OBD_CHECK_OP(exp->exp_obd, trigger_group_io, -EOPNOTSUPP);
 866         OBD_COUNTER_INCREMENT(exp->exp_obd, trigger_group_io);
 867
 868         rc = OBP(exp->exp_obd, trigger_group_io)(exp, lsm, loi, oig);
 869         RETURN(rc);
 870 }
 871
 872 static inline int obd_teardown_async_page(struct obd_export *exp,
 873                                           struct lov_stripe_md *lsm,
 874                                           struct lov_oinfo *loi, void *cookie)
 875 {
 876         int rc;
 877         ENTRY;
 878
 879         OBD_CHECK_OP(exp->exp_obd, teardown_async_page, -EOPNOTSUPP);
 880         OBD_COUNTER_INCREMENT(exp->exp_obd, teardown_async_page);
 881
 882         rc = OBP(exp->exp_obd, teardown_async_page)(exp, lsm, loi, cookie);
 883         RETURN(rc);
 884 }
 885
 886 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
 887                              int objcount, struct obd_ioobj *obj,
 888                              int niocount, struct niobuf_remote *remote,
 889                              struct niobuf_local *local,
 890                              struct obd_trans_info *oti,
 891                              struct lustre_capa *capa)
 892 {
 893         int rc;
 894         ENTRY;
 895
 896         OBD_CHECK_OP(exp->exp_obd, preprw, -EOPNOTSUPP);
 897         OBD_COUNTER_INCREMENT(exp->exp_obd, preprw);
 898
 899         rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, niocount,
 900                                        remote, local, oti, capa);
 901         RETURN(rc);
 902 }
 903
 904 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
 905                                int objcount, struct obd_ioobj *obj,
 906                                int niocount, struct niobuf_local *local,
 907                                struct obd_trans_info *oti, int rc)
 908 {
 909         ENTRY;
 910
 911         OBD_CHECK_OP(exp->exp_obd, commitrw, -EOPNOTSUPP);
 912         OBD_COUNTER_INCREMENT(exp->exp_obd, commitrw);
 913
 914         rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj, niocount,
 915                                          local, oti, rc);
 916         RETURN(rc);
 917 }
 918
 919 static inline int obd_do_cow(struct obd_export *exp, struct obd_ioobj *obj,
 920                             int objcount,struct niobuf_remote *rnb)
 921 {
 922         int rc;
 923         ENTRY;
 924
 925         /* there are cases when write_extents is not implemented. */
 926         if (!OBP(exp->exp_obd, do_cow))
 927                 RETURN(0);
 928
 929         OBD_COUNTER_INCREMENT(exp->exp_obd, do_cow);
 930
 931         rc = OBP(exp->exp_obd, do_cow)(exp, obj, objcount, rnb);
 932
 933         RETURN(rc);
 934 }
 935
 936 static inline int obd_write_extents(struct obd_export *exp,
 937                                     struct obd_ioobj *obj,
 938                                     int objcount, int niocount,
 939                                     struct niobuf_local *local,
 940                                     int rc)
 941 {
 942         ENTRY;
 943
 944         /* there are cases when write_extents is not implemented. */
 945         if (!OBP(exp->exp_obd, write_extents))
 946                 RETURN(0);
 947
 948         OBD_COUNTER_INCREMENT(exp->exp_obd, write_extents);
 949
 950         rc = OBP(exp->exp_obd, write_extents)(exp, obj, objcount, niocount,
 951                                               local, rc);
 952         RETURN(rc);
 953 }
 954
 955 static inline int obd_adjust_kms(struct obd_export *exp,
 956                                  struct lov_stripe_md *lsm,
 957                                  obd_off size, int shrink)
 958 {
 959         int rc;
 960         ENTRY;
 961
 962         OBD_CHECK_OP(exp->exp_obd, adjust_kms, -EOPNOTSUPP);
 963         OBD_COUNTER_INCREMENT(exp->exp_obd, adjust_kms);
 964
 965         rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
 966         RETURN(rc);
 967 }
 968
 969 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
 970                                 int len, void *karg, void *uarg)
 971 {
 972         int rc;
 973         ENTRY;
 974
 975         EXP_CHECK_OP(exp, iocontrol);
 976         OBD_COUNTER_INCREMENT(exp->exp_obd, iocontrol);
 977
 978         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
 979         RETURN(rc);
 980 }
 981
 982 static inline int obd_enqueue(struct obd_export *exp, struct lov_stripe_md *ea,
 983                               __u32 type, ldlm_policy_data_t *policy,
 984                               __u32 mode, int *flags, void *bl_cb, void *cp_cb,
 985                               void *gl_cb, void *data, __u32 lvb_len,
 986                               void *lvb_swabber, struct lustre_handle *lockh)
 987 {
 988         int rc;
 989         ENTRY;
 990
 991         EXP_CHECK_OP(exp, enqueue);
 992         OBD_COUNTER_INCREMENT(exp->exp_obd, enqueue);
 993
 994         rc = OBP(exp->exp_obd, enqueue)(exp, ea, type, policy, mode, flags,
 995                                         bl_cb, cp_cb, gl_cb, data, lvb_len,
 996                                         lvb_swabber, lockh);
 997         RETURN(rc);
 998 }
 999
1000 static inline int obd_match(struct obd_export *exp, struct lov_stripe_md *ea,
1001                             __u32 type, ldlm_policy_data_t *policy, __u32 mode,
1002                             int *flags, void *data, struct lustre_handle *lockh)
1003 {
1004         int rc;
1005         ENTRY;
1006
1007         EXP_CHECK_OP(exp, match);
1008         OBD_COUNTER_INCREMENT(exp->exp_obd, match);
1009
1010         rc = OBP(exp->exp_obd, match)(exp, ea, type, policy, mode, flags, data,
1011                                       lockh);
1012         RETURN(rc);
1013 }
1014
1015 static inline int obd_change_cbdata(struct obd_export *exp,
1016                                     struct lov_stripe_md *lsm,
1017                                     ldlm_iterator_t it, void *data)
1018 {
1019         int rc;
1020         ENTRY;
1021
1022         EXP_CHECK_OP(exp, change_cbdata);
1023         OBD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata);
1024
1025         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1026         RETURN(rc);
1027 }
1028
1029 static inline int obd_cancel(struct obd_export *exp,
1030                              struct lov_stripe_md *ea, __u32 mode,
1031                              struct lustre_handle *lockh)
1032 {
1033         int rc;
1034         ENTRY;
1035
1036         EXP_CHECK_OP(exp, cancel);
1037         OBD_COUNTER_INCREMENT(exp->exp_obd, cancel);
1038
1039         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1040         RETURN(rc);
1041 }
1042
1043 static inline int obd_cancel_unused(struct obd_export *exp,
1044                                     struct lov_stripe_md *ea, int flags,
1045                                     void *opaque)
1046 {
1047         int rc;
1048         ENTRY;
1049
1050         EXP_CHECK_OP(exp, cancel_unused);
1051         OBD_COUNTER_INCREMENT(exp->exp_obd, cancel_unused);
1052
1053         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1054         RETURN(rc);
1055 }
1056
1057
1058 static inline int obd_san_preprw(int cmd, struct obd_export *exp,
1059                                  struct obdo *oa,
1060                                  int objcount, struct obd_ioobj *obj,
1061                                  int niocount, struct niobuf_remote *remote)
1062 {
1063         int rc;
1064
1065         EXP_CHECK_OP(exp, preprw);
1066         OBD_COUNTER_INCREMENT(exp->exp_obd, preprw);
1067
1068         rc = OBP(exp->exp_obd, san_preprw)(cmd, exp, oa, objcount, obj,
1069                                            niocount, remote);
1070         class_export_put(exp);
1071         return(rc);
1072 }
1073
1074 static inline int obd_pin(struct obd_export *exp, obd_id ino, __u32 gen,
1075                           int type, struct obd_client_handle *handle, int flag)
1076 {
1077         int rc;
1078
1079         EXP_CHECK_OP(exp, pin);
1080         OBD_COUNTER_INCREMENT(exp->exp_obd, pin);
1081
1082         rc = OBP(exp->exp_obd, pin)(exp, ino, gen, type, handle, flag);
1083         return(rc);
1084 }
1085
1086 static inline int obd_unpin(struct obd_export *exp,
1087                             struct obd_client_handle *handle, int flag)
1088 {
1089         int rc;
1090
1091         EXP_CHECK_OP(exp, unpin);
1092         OBD_COUNTER_INCREMENT(exp->exp_obd, unpin);
1093
1094         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1095         return(rc);
1096 }
1097
1098
1099 static inline void obd_import_event(struct obd_device *obd,
1100                                     struct obd_import *imp,
1101                                     enum obd_import_event event)
1102 {
1103         if (!obd) {
1104                 CERROR("NULL device\n");
1105                 EXIT;
1106                 return;
1107         }
1108         if (obd->obd_set_up && OBP(obd, import_event)) {
1109                 OBD_COUNTER_INCREMENT(obd, import_event);
1110                 OBP(obd, import_event)(obd, imp, event);
1111         }
1112 }
1113
1114 static inline int obd_llog_connect(struct obd_export *exp,
1115                                         struct llogd_conn_body *body)
1116 {
1117         ENTRY;
1118         EXP_CHECK_OP(exp, llog_connect);
1119         return OBP(exp->exp_obd, llog_connect)(exp, body);
1120 }
1121
1122 static inline int obd_notify(struct obd_device *obd, struct obd_device *watched,
1123                              int active, void *data)
1124 {
1125         OBD_CHECK_DEV(obd);
1126         if (!obd->obd_set_up) {
1127                 CERROR("obd %s not set up\n", obd->obd_name);
1128                 return -EINVAL;
1129         }
1130
1131         if (!OBP(obd, notify)) {
1132                 CERROR("obd %s has no notify handler\n", obd->obd_name);
1133                 return -ENOSYS;
1134         }
1135
1136         OBD_COUNTER_INCREMENT(obd, notify);
1137         return OBP(obd, notify)(obd, watched, active, data);
1138 }
1139
1140 static inline int obd_register_observer(struct obd_device *obd,
1141                                         struct obd_device *observer)
1142 {
1143         ENTRY;
1144         OBD_CHECK_DEV(obd);
1145         if (obd->obd_observer && observer)
1146                 RETURN(-EALREADY);
1147         obd->obd_observer = observer;
1148         RETURN(0);
1149 }
1150
1151 static inline int obd_init_ea_size(struct obd_export *exp, int size, int size2)
1152 {
1153         int rc;
1154         ENTRY;
1155         LASSERT(OBP(exp->exp_obd, init_ea_size) != NULL);
1156         OBD_COUNTER_INCREMENT(exp->exp_obd, init_ea_size);
1157         rc = OBP(exp->exp_obd, init_ea_size)(exp, size, size2);
1158         RETURN(rc);
1159 }
1160
1161 static inline int md_getstatus(struct obd_export *exp, struct lustre_id *id)
1162 {
1163         int rc;
1164
1165         EXP_CHECK_MD_OP(exp, getstatus);
1166         MD_COUNTER_INCREMENT(exp->exp_obd, getstatus);
1167         rc = MDP(exp->exp_obd, getstatus)(exp, id);
1168         RETURN(rc);
1169 }
1170
1171 static inline int md_delete_inode(struct obd_export *exp,
1172                                   struct lustre_id *id)
1173 {
1174         int rc;
1175         ENTRY;
1176
1177         if (MDP(exp->exp_obd, delete_inode) == NULL)
1178                 RETURN(0);
1179
1180         MD_COUNTER_INCREMENT(exp->exp_obd, delete_inode);
1181         rc = MDP(exp->exp_obd, delete_inode)(exp, id);
1182         RETURN(rc);
1183 }
1184
1185 static inline int md_getattr(struct obd_export *exp, struct lustre_id *id,
1186                              __u64 valid, const char *xattr_name,
1187                              const void *xattr_data, unsigned int xattr_datalen,
1188                              unsigned int ea_size, struct obd_capa *ocapa,
1189                              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, xattr_name,
1196                                         xattr_data, xattr_datalen,
1197                                         ea_size, ocapa, request);
1198         RETURN(rc);
1199 }
1200
1201 static inline int md_access_check(struct obd_export *exp, struct lustre_id *id,
1202                                   struct ptlrpc_request **request)
1203 {
1204         int rc;
1205         ENTRY;
1206         EXP_CHECK_MD_OP(exp, access_check);
1207         MD_COUNTER_INCREMENT(exp->exp_obd, access_check);
1208         rc = MDP(exp->exp_obd, access_check)(exp, id, request);
1209         RETURN(rc);
1210 }
1211
1212 static inline int md_change_cbdata(struct obd_export *exp, struct lustre_id *id,
1213                                    ldlm_iterator_t it, void *data)
1214 {
1215         int rc;
1216         ENTRY;
1217         EXP_CHECK_MD_OP(exp, change_cbdata);
1218         MD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata);
1219         rc = MDP(exp->exp_obd, change_cbdata)(exp, id, it, data);
1220         RETURN(rc);
1221 }
1222
1223 static inline int md_change_cbdata_name(struct obd_export *exp,
1224                                         struct lustre_id *id, char *name,
1225                                         int namelen, struct lustre_id *id2,
1226                                         ldlm_iterator_t it, void *data)
1227 {
1228         int rc;
1229
1230         /* this seem to be needed only for lmv. */
1231         if (!MDP(exp->exp_obd, change_cbdata_name))
1232                 return 0;
1233
1234         ENTRY;
1235
1236         MD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata_name);
1237         rc = MDP(exp->exp_obd, change_cbdata_name)(exp, id, name, namelen,
1238                                                    id2, it, data);
1239         RETURN(rc);
1240 }
1241
1242 static inline int md_close(struct obd_export *exp,
1243                            struct mdc_op_data *op_data,
1244                            struct obd_client_handle *och,
1245                            struct ptlrpc_request **request)
1246 {
1247         int rc;
1248         ENTRY;
1249         EXP_CHECK_MD_OP(exp, close);
1250         MD_COUNTER_INCREMENT(exp->exp_obd, close);
1251         rc = MDP(exp->exp_obd, close)(exp, op_data, och, request);
1252         RETURN(rc);
1253 }
1254
1255 static inline int md_create(struct obd_export *exp, struct mdc_op_data *op_data,
1256                             const void *data, int datalen, int mode,
1257                             __u32 uid, __u32 gid, __u64 rdev,
1258                             struct ptlrpc_request **request)
1259 {
1260         int rc;
1261         ENTRY;
1262         EXP_CHECK_MD_OP(exp, create);
1263         MD_COUNTER_INCREMENT(exp->exp_obd, create);
1264         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1265                                        uid, gid, rdev, request);
1266         RETURN(rc);
1267 }
1268
1269 static inline int md_done_writing(struct obd_export *exp, struct obdo *obdo)
1270 {
1271         int rc;
1272         ENTRY;
1273         EXP_CHECK_MD_OP(exp, done_writing);
1274         MD_COUNTER_INCREMENT(exp->exp_obd, done_writing);
1275         rc = MDP(exp->exp_obd, done_writing)(exp, obdo);
1276         RETURN(rc);
1277 }
1278
1279 static inline int md_enqueue(struct obd_export *exp, int lock_type,
1280                              struct lookup_intent *it, int lock_mode,
1281                              struct mdc_op_data *data,
1282                              struct lustre_handle *lockh,
1283                              void *lmm, int lmmsize,
1284                              ldlm_completion_callback cb_completion,
1285                              ldlm_blocking_callback cb_blocking,
1286                              void *cb_data)
1287 {
1288         int rc;
1289         ENTRY;
1290         EXP_CHECK_MD_OP(exp, enqueue);
1291         MD_COUNTER_INCREMENT(exp->exp_obd, enqueue);
1292         rc = MDP(exp->exp_obd, enqueue)(exp, lock_type, it, lock_mode,
1293                                         data, lockh, lmm, lmmsize,
1294                                         cb_completion, cb_blocking,
1295                                         cb_data);
1296         RETURN(rc);
1297 }
1298
1299 static inline int md_getattr_lock(struct obd_export *exp, struct lustre_id *id,
1300                                   char *filename, int namelen,
1301                                   __u64 valid, unsigned int ea_size,
1302                                   struct ptlrpc_request **request)
1303 {
1304         int rc;
1305         ENTRY;
1306         EXP_CHECK_MD_OP(exp, getattr_lock);
1307         MD_COUNTER_INCREMENT(exp->exp_obd, getattr_lock);
1308         rc = MDP(exp->exp_obd, getattr_lock)(exp, id, filename, namelen,
1309                                              valid, ea_size, request);
1310         RETURN(rc);
1311 }
1312
1313 static inline int md_intent_lock(struct obd_export *exp,
1314                                  struct lustre_id *pid, const char *name,
1315                                  int len, void *lmm, int lmmsize,
1316                                  struct lustre_id *cid,
1317                                  struct lookup_intent *it,
1318                                  int flags, struct ptlrpc_request **reqp,
1319                                  ldlm_blocking_callback cb_blocking)
1320 {
1321         int rc;
1322         ENTRY;
1323         EXP_CHECK_MD_OP(exp, intent_lock);
1324         MD_COUNTER_INCREMENT(exp->exp_obd, intent_lock);
1325         rc = MDP(exp->exp_obd, intent_lock)(exp, pid, name, len, lmm,
1326                                             lmmsize, cid, it, flags,
1327                                             reqp, cb_blocking);
1328         RETURN(rc);
1329 }
1330
1331 static inline int md_link(struct obd_export *exp, struct mdc_op_data *data,
1332                           struct ptlrpc_request **request)
1333 {
1334         int rc;
1335         ENTRY;
1336         EXP_CHECK_MD_OP(exp, link);
1337         MD_COUNTER_INCREMENT(exp->exp_obd, link);
1338         rc = MDP(exp->exp_obd, link)(exp, data, request);
1339         RETURN(rc);
1340 }
1341
1342 static inline int md_rename(struct obd_export *exp, struct mdc_op_data *data,
1343                             const char *old, int oldlen,
1344                             const char *new, int newlen,
1345                             struct ptlrpc_request **request)
1346 {
1347         int rc;
1348         ENTRY;
1349         EXP_CHECK_MD_OP(exp, rename);
1350         MD_COUNTER_INCREMENT(exp->exp_obd, rename);
1351         rc = MDP(exp->exp_obd, rename)(exp, data, old, oldlen, new,
1352                                        newlen, request);
1353         RETURN(rc);
1354 }
1355
1356 static inline int md_setattr(struct obd_export *exp, struct mdc_op_data *data,
1357                              struct iattr *iattr, void *ea, int ealen,
1358                              void *ea2, int ea2len, void *ea3, int ea3len,
1359                              struct ptlrpc_request **request)
1360 {
1361         int rc;
1362         ENTRY;
1363         EXP_CHECK_MD_OP(exp, setattr);
1364         MD_COUNTER_INCREMENT(exp->exp_obd, setattr);
1365         rc = MDP(exp->exp_obd, setattr)(exp, data, iattr, ea, ealen,
1366                                         ea2, ea2len, ea3, ea3len, request);
1367         RETURN(rc);
1368 }
1369
1370 static inline int md_sync(struct obd_export *exp, struct lustre_id *id,
1371                                struct ptlrpc_request **request)
1372 {
1373         int rc;
1374         ENTRY;
1375         EXP_CHECK_MD_OP(exp, sync);
1376         MD_COUNTER_INCREMENT(exp->exp_obd, sync);
1377         rc = MDP(exp->exp_obd, sync)(exp, id, request);
1378         RETURN(rc);
1379 }
1380
1381 static inline int md_readpage(struct obd_export *exp, struct lustre_id *id,
1382                               __u64 offset, struct page *page,
1383                               struct ptlrpc_request **request)
1384 {
1385         int rc;
1386         ENTRY;
1387         EXP_CHECK_MD_OP(exp, readpage);
1388         MD_COUNTER_INCREMENT(exp->exp_obd, readpage);
1389         rc = MDP(exp->exp_obd, readpage)(exp, id, offset, page, request);
1390         RETURN(rc);
1391 }
1392
1393 static inline int md_unlink(struct obd_export *exp, struct mdc_op_data *data,
1394                             struct ptlrpc_request **request)
1395 {
1396         int rc;
1397         ENTRY;
1398         EXP_CHECK_MD_OP(exp, unlink);
1399         MD_COUNTER_INCREMENT(exp->exp_obd, unlink);
1400         rc = MDP(exp->exp_obd, unlink)(exp, data, request);
1401         RETURN(rc);
1402 }
1403
1404 static inline struct obd_device *md_get_real_obd(struct obd_export *exp,
1405                                                  struct lustre_id *fid)
1406 {
1407         ENTRY;
1408         if (MDP(exp->exp_obd, get_real_obd) == NULL)
1409                 return exp->exp_obd;
1410         MD_COUNTER_INCREMENT(exp->exp_obd, get_real_obd);
1411         return MDP(exp->exp_obd, get_real_obd)(exp, fid);
1412 }
1413
1414 static inline int md_valid_attrs(struct obd_export *exp,
1415                                  struct lustre_id *id)
1416 {
1417         ENTRY;
1418         EXP_CHECK_MD_OP(exp, valid_attrs);
1419         MD_COUNTER_INCREMENT(exp->exp_obd, valid_attrs);
1420         return MDP(exp->exp_obd, valid_attrs)(exp, id);
1421 }
1422
1423 static inline int md_req2lustre_md(struct obd_export *exp,
1424                                    struct ptlrpc_request *req,
1425                                    unsigned int offset,
1426                                    struct obd_export *osc_exp,
1427                                    struct lustre_md *md)
1428 {
1429         ENTRY;
1430         EXP_CHECK_MD_OP(exp, req2lustre_md);
1431         MD_COUNTER_INCREMENT(exp->exp_obd, req2lustre_md);
1432         return MDP(exp->exp_obd, req2lustre_md)(exp, req, offset, osc_exp, md);
1433 }
1434
1435 static inline int md_set_open_replay_data(struct obd_export *exp,
1436                                           struct obd_client_handle *och,
1437                                           struct ptlrpc_request *open_req)
1438 {
1439         ENTRY;
1440         EXP_CHECK_MD_OP(exp, set_open_replay_data);
1441         MD_COUNTER_INCREMENT(exp->exp_obd, set_open_replay_data);
1442         return MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req);
1443 }
1444
1445 static inline int md_clear_open_replay_data(struct obd_export *exp,
1446                                             struct obd_client_handle *och)
1447 {
1448         ENTRY;
1449         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
1450         MD_COUNTER_INCREMENT(exp->exp_obd, clear_open_replay_data);
1451         return MDP(exp->exp_obd, clear_open_replay_data)(exp, och);
1452 }
1453
1454 static inline int md_store_inode_generation(struct obd_export *exp,
1455                                             struct ptlrpc_request *req,
1456                                             int reqoff, int repoff)
1457 {
1458         ENTRY;
1459         EXP_CHECK_MD_OP(exp, store_inode_generation);
1460         MD_COUNTER_INCREMENT(exp->exp_obd, store_inode_generation);
1461         return MDP(exp->exp_obd, store_inode_generation)(exp, req,
1462                    reqoff, repoff);
1463 }
1464
1465 static inline int md_set_lock_data(struct obd_export *exp, __u64 *l,
1466                                    void *data)
1467 {
1468         ENTRY;
1469         EXP_CHECK_MD_OP(exp, set_lock_data);
1470         MD_COUNTER_INCREMENT(exp->exp_obd, set_lock_data);
1471         return MDP(exp->exp_obd, set_lock_data)(exp, l, data);
1472 }
1473
1474 /* OBD Metadata Support */
1475
1476 extern int obd_init_caches(void);
1477 extern void obd_cleanup_caches(void);
1478
1479 /* support routines */
1480 extern kmem_cache_t *obdo_cachep;
1481 static inline struct obdo *obdo_alloc(void)
1482 {
1483         struct obdo *oa;
1484
1485         OBD_SLAB_ALLOC(oa, obdo_cachep, GFP_KERNEL,
1486                        sizeof(*oa));
1487         return oa;
1488 }
1489
1490 static inline void obdo_free(struct obdo *oa)
1491 {
1492         OBD_SLAB_FREE(oa, obdo_cachep, sizeof(*oa));
1493 }
1494
1495 static inline void obdo2id(struct lustre_id *id,
1496                            struct obdo *oa)
1497 {
1498         LASSERT(oa && id);
1499         id_ino(id) = oa->o_id;
1500         id_fid(id) = oa->o_fid;
1501         id_group(id) = oa->o_mds;
1502         id_gen(id) = oa->o_generation;
1503 }
1504
1505 static inline void id2obdo(struct obdo *oa,
1506                            struct lustre_id *id)
1507 {
1508         LASSERT(oa && id);
1509         oa->o_id = id_ino(id);
1510         oa->o_fid = id_fid(id);
1511         oa->o_mds = id_group(id);
1512         oa->o_generation = id_gen(id);
1513 }
1514
1515 #if !defined(__KERNEL__) || (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
1516 #define to_kdev_t(dev) dev
1517 #define kdev_t_to_nr(dev) dev
1518 #endif
1519
1520 /* I'm as embarrassed about this as you are.
1521  *
1522  * <shaver> // XXX do not look into _superhack with remaining eye
1523  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
1524 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
1525 extern void (*ptlrpc_abort_inflight_superhack)(struct obd_import *imp);
1526
1527 /* sysctl.c */
1528 extern void obd_sysctl_init (void);
1529 extern void obd_sysctl_clean (void);
1530
1531 /* uuid.c  */
1532 typedef __u8 class_uuid_t[16];
1533 //int class_uuid_parse(struct obd_uuid in, class_uuid_t out);
1534 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
1535
1536 /* lustre_peer.c    */
1537 int lustre_uuid_to_peer(char *uuid, __u32 *peer_nal, ptl_nid_t *peer_nid);
1538 int class_add_uuid(char *uuid, __u64 nid, __u32 nal);
1539 int class_del_uuid (char *uuid);
1540 void class_init_uuidlist(void);
1541 void class_exit_uuidlist(void);
1542
1543 /* mea.c */
1544 int mea_name2idx(struct mea *mea, char *name, int namelen);
1545 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
1546
1547 #endif /* __LINUX_OBD_CLASS_H */