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         struct obd_export *cfg_exp;
  94 };
  95
  96 int class_config_process_llog(struct llog_ctxt *ctxt, char *name,
  97                               struct config_llog_instance *cfg);
  98 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
  99                            struct config_llog_instance *cfg);
 100
 101 struct lustre_profile {
 102         struct list_head lp_list;
 103         char *lp_profile;
 104         char *lp_lov;
 105         char *lp_lmv;
 106         char *lp_gkc;
 107 };
 108
 109 struct lustre_profile *class_get_profile(char * prof);
 110 void class_del_profile(char *prof);
 111
 112 #define class_export_rpc_get(exp)                                       \
 113 ({                                                                      \
 114         atomic_inc(&(exp)->exp_rpc_count);                              \
 115         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",    \
 116                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 117         class_export_get(exp);                                          \
 118 })
 119
 120 #define class_export_rpc_put(exp)                                       \
 121 ({                                                                      \
 122         atomic_dec(&(exp)->exp_rpc_count);                              \
 123         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",    \
 124                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 125         class_export_put(exp);                                          \
 126 })
 127
 128 #define class_export_get(exp)                                                  \
 129 ({                                                                             \
 130         struct obd_export *exp_ = exp;                                         \
 131         atomic_inc(&exp_->exp_refcount);                                       \
 132         CDEBUG(D_INFO, "GETting export %p : new refcount %d\n", exp_,          \
 133                atomic_read(&exp_->exp_refcount));                              \
 134         exp_;                                                                  \
 135 })
 136
 137 #define class_export_put(exp)                                                  \
 138 do {                                                                           \
 139         LASSERT((exp) != NULL);                                                \
 140         CDEBUG(D_INFO, "PUTting export %p : new refcount %d\n", (exp),         \
 141                atomic_read(&(exp)->exp_refcount) - 1);                         \
 142         LASSERT(atomic_read(&(exp)->exp_refcount) > 0);                        \
 143         LASSERT(atomic_read(&(exp)->exp_refcount) < 0x5a5a5a);                 \
 144         __class_export_put(exp);                                               \
 145 } while (0)
 146
 147 void __class_export_put(struct obd_export *);
 148 struct obd_export *class_new_export(struct obd_device *obddev);
 149 void class_unlink_export(struct obd_export *exp);
 150
 151 struct obd_import *class_import_get(struct obd_import *);
 152 void class_import_put(struct obd_import *);
 153 struct obd_import *class_new_import(void);
 154 void class_destroy_import(struct obd_import *exp);
 155
 156 struct obd_type *class_get_type(char *name);
 157 void class_put_type(struct obd_type *type);
 158 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 159                   struct obd_uuid *cluuid);
 160 int class_disconnect(struct obd_export *exp, unsigned long flags);
 161 void class_disconnect_exports(struct obd_device *, unsigned long);
 162 int class_disconnect_stale_exports(struct obd_device *,
 163                                    int (*test_export)(struct obd_export *),
 164                                    unsigned long);
 165
 166 /* generic operations shared by various OBD types */
 167 int class_multi_setup(struct obd_device *obddev, uint32_t len, void *data);
 168 int class_multi_cleanup(struct obd_device *obddev);
 169
 170 /* obdo.c */
 171 #ifdef __KERNEL__
 172 void obdo_from_iattr(struct obdo *oa, struct iattr *attr, unsigned ia_valid);
 173 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, obd_valid valid);
 174 void obdo_from_inode(struct obdo *dst, struct inode *src, obd_valid valid);
 175 void obdo_refresh_inode(struct inode *dst, struct obdo *src, obd_valid valid);
 176 void obdo_to_inode(struct inode *dst, struct obdo *src, obd_valid valid);
 177 #endif
 178 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_valid valid);
 179 int obdo_cmp_md(struct obdo *dst, struct obdo *src, obd_valid compare);
 180 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
 181
 182 #define OBT(dev)        (dev)->obd_type
 183 #define OBP(dev, op)    (dev)->obd_type->typ_ops->o_ ## op
 184 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
 185 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 186
 187 /* Ensure obd_setup: used for cleanup which must be called
 188    while obd is stopping */
 189 #define OBD_CHECK_DEV(obd)                                      \
 190 do {                                                            \
 191         if (!(obd)) {                                           \
 192                 CERROR("NULL device\n");                        \
 193                 RETURN(-ENODEV);                                \
 194         }                                                       \
 195 } while (0)
 196
 197 #define OBD_CHECK_DEV_STOPPING(obd)                             \
 198 do {                                                            \
 199         OBD_CHECK_DEV(obd);                                     \
 200         if (!(obd)->obd_set_up) {                               \
 201                 CERROR("Device %d not setup\n",                 \
 202                        (obd)->obd_minor);                       \
 203                 RETURN(-ENODEV);                                \
 204         }                                                       \
 205                                                                 \
 206         if (!(obd)->obd_stopping) {                             \
 207                 CERROR("Device %d not stopping\n",              \
 208                        (obd)->obd_minor);                       \
 209                 RETURN(-ENODEV);                                \
 210         }                                                       \
 211 } while (0)
 212
 213 /* ensure obd_setup and !obd_stopping */
 214 #define OBD_CHECK_DEV_ACTIVE(obd)                               \
 215 do {                                                            \
 216         OBD_CHECK_DEV(obd);                                     \
 217         if (!(obd)->obd_set_up || (obd)->obd_stopping) {        \
 218                 CERROR("Device %d not setup\n",                 \
 219                        (obd)->obd_minor);                       \
 220                 RETURN(-ENODEV);                                \
 221         }                                                       \
 222 } while (0)
 223
 224
 225 #ifdef LPROCFS
 226 #define OBD_COUNTER_OFFSET(op)                                  \
 227         ((offsetof(struct obd_ops, o_ ## op) -                  \
 228           offsetof(struct obd_ops, o_iocontrol))                \
 229          / sizeof(((struct obd_ops *)(0))->o_iocontrol))
 230
 231 #define OBD_COUNTER_INCREMENT(obd, op)                          \
 232         if ((obd)->obd_stats != NULL) {                         \
 233                 unsigned int coffset;                           \
 234                 coffset = (unsigned int)(obd)->obd_cntr_base +  \
 235                         OBD_COUNTER_OFFSET(op);                 \
 236                 LASSERT(coffset < (obd)->obd_stats->ls_num);    \
 237                 lprocfs_counter_incr((obd)->obd_stats, coffset);\
 238         }
 239
 240 #define MD_COUNTER_OFFSET(op)                                  \
 241         ((offsetof(struct md_ops, m_ ## op) -                  \
 242           offsetof(struct md_ops, m_getstatus))                \
 243          / sizeof(((struct md_ops *)(0))->m_getstatus))
 244
 245 #define MD_COUNTER_INCREMENT(obd, op)                           \
 246         if ((obd)->md_stats != NULL) {                          \
 247                 unsigned int coffset;                           \
 248                 coffset = (unsigned int)(obd)->md_cntr_base +   \
 249                         MD_COUNTER_OFFSET(op);                  \
 250                 LASSERT(coffset < (obd)->md_stats->ls_num);     \
 251                 lprocfs_counter_incr((obd)->md_stats, coffset); \
 252         }
 253
 254 #else
 255 #define OBD_COUNTER_OFFSET(op)
 256 #define OBD_COUNTER_INCREMENT(obd, op)
 257 #define MD_COUNTER_INCREMENT(obd, op)
 258 #endif
 259
 260 #define OBD_CHECK_MD_OP(obd, op, err)                           \
 261 do {                                                            \
 262         if (!OBT(obd) || !MDP((obd), op)) {\
 263                 if (err)                                        \
 264                         CERROR("md_" #op ": dev %s/%d no operation\n", \
 265                                obd->obd_name, obd->obd_minor);  \
 266                 RETURN(err);                                    \
 267         }                                                       \
 268 } while (0)
 269
 270 #define EXP_CHECK_MD_OP(exp, op)                                \
 271 do {                                                            \
 272         if ((exp) == NULL) {                                    \
 273                 CERROR("obd_" #op ": NULL export\n");           \
 274                 portals_debug_dumplog();                        \
 275                 RETURN(-ENODEV);                                \
 276         }                                                       \
 277         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 278                 CERROR("obd_" #op ": cleaned up obd\n");        \
 279                 RETURN(-EOPNOTSUPP);                            \
 280         }                                                       \
 281         if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
 282                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 283                        (exp)->exp_obd->obd_name,                \
 284                        (exp)->exp_obd->obd_minor);              \
 285                 RETURN(-EOPNOTSUPP);                            \
 286         }                                                       \
 287 } while (0)
 288
 289 #define OBD_CHECK_OP(obd, op, err)                              \
 290 do {                                                            \
 291         if (!OBT(obd) || !OBP((obd), op)) {\
 292                 if (err)                                        \
 293                         CERROR("obd_" #op ": dev %s/%d no operation\n", \
 294                                obd->obd_name, obd->obd_minor);  \
 295                 RETURN(err);                                    \
 296         }                                                       \
 297 } while (0)
 298
 299 #define EXP_CHECK_OP(exp, op)                                   \
 300 do {                                                            \
 301         if ((exp) == NULL) {                                    \
 302                 CERROR("obd_" #op ": NULL export\n");           \
 303                 portals_debug_dumplog();                        \
 304                 RETURN(-ENODEV);                                \
 305         }                                                       \
 306         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 307                 CERROR("obd_" #op ": cleaned up obd\n");        \
 308                 RETURN(-EOPNOTSUPP);                            \
 309         }                                                       \
 310         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 311                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 312                        (exp)->exp_obd->obd_name,                \
 313                        (exp)->exp_obd->obd_minor);              \
 314                 RETURN(-EOPNOTSUPP);                            \
 315         }                                                       \
 316 } while (0)
 317
 318 #define CTXT_CHECK_OP(ctxt, op, err)                            \
 319 do {                                                            \
 320         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {        \
 321                 if (err)                                        \
 322                         CERROR("lop_" #op ": dev %d no operation\n",    \
 323                                ctxt->loc_obd->obd_minor);               \
 324                 RETURN(err);                                    \
 325         }                                                       \
 326 } while (0)
 327
 328 static inline int obd_get_info(struct obd_export *exp, __u32 keylen,
 329                                void *key, __u32 *vallen, void *val)
 330 {
 331         int rc;
 332         ENTRY;
 333
 334         EXP_CHECK_OP(exp, get_info);
 335         OBD_COUNTER_INCREMENT(exp->exp_obd, get_info);
 336
 337         rc = OBP(exp->exp_obd, get_info)(exp, keylen, key, vallen, val);
 338         RETURN(rc);
 339 }
 340
 341 static inline int obd_set_info(struct obd_export *exp, obd_count keylen,
 342                                void *key, obd_count vallen, void *val)
 343 {
 344         int rc;
 345         ENTRY;
 346
 347         EXP_CHECK_OP(exp, set_info);
 348         OBD_COUNTER_INCREMENT(exp->exp_obd, set_info);
 349
 350         rc = OBP(exp->exp_obd, set_info)(exp, keylen, key, vallen, val);
 351         RETURN(rc);
 352 }
 353
 354 static inline int obd_setup(struct obd_device *obd, int datalen, void *data)
 355 {
 356         int rc;
 357         ENTRY;
 358
 359         OBD_CHECK_OP(obd, setup, -EOPNOTSUPP);
 360         OBD_COUNTER_INCREMENT(obd, setup);
 361
 362         rc = OBP(obd, setup)(obd, datalen, data);
 363         RETURN(rc);
 364 }
 365
 366 static inline int obd_precleanup(struct obd_device *obd, int flags)
 367 {
 368         int rc;
 369         ENTRY;
 370
 371         OBD_CHECK_OP(obd, precleanup, 0);
 372         OBD_COUNTER_INCREMENT(obd, precleanup);
 373
 374         rc = OBP(obd, precleanup)(obd, flags);
 375         RETURN(rc);
 376 }
 377
 378 static inline int obd_cleanup(struct obd_device *obd, int flags)
 379 {
 380         int rc;
 381         ENTRY;
 382
 383         OBD_CHECK_DEV_STOPPING(obd);
 384         OBD_CHECK_OP(obd, cleanup, 0);
 385         OBD_COUNTER_INCREMENT(obd, cleanup);
 386
 387         rc = OBP(obd, cleanup)(obd, flags);
 388         RETURN(rc);
 389 }
 390
 391 static inline int
 392 obd_process_config(struct obd_device *obd, int datalen, void *data)
 393 {
 394         int rc;
 395         ENTRY;
 396
 397         OBD_CHECK_OP(obd, process_config, -EOPNOTSUPP);
 398         OBD_COUNTER_INCREMENT(obd, process_config);
 399
 400         rc = OBP(obd, process_config)(obd, datalen, data);
 401         RETURN(rc);
 402 }
 403
 404 /* Pack an in-memory MD struct for storage on disk.
 405  * Returns +ve size of packed MD (0 for free), or -ve error.
 406  *
 407  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 408  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 409  * If @*disk_tgt == NULL, it will be allocated
 410  */
 411 static inline int obd_packmd(struct obd_export *exp,
 412                              struct lov_mds_md **disk_tgt,
 413                              struct lov_stripe_md *mem_src)
 414 {
 415         int rc;
 416         ENTRY;
 417
 418         EXP_CHECK_OP(exp, packmd);
 419         OBD_COUNTER_INCREMENT(exp->exp_obd, packmd);
 420
 421         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 422         RETURN(rc);
 423 }
 424
 425 static inline int obd_size_diskmd(struct obd_export *exp,
 426                                   struct lov_stripe_md *mem_src)
 427 {
 428         return obd_packmd(exp, NULL, mem_src);
 429 }
 430
 431 /* helper functions */
 432 static inline int obd_alloc_diskmd(struct obd_export *exp,
 433                                    struct lov_mds_md **disk_tgt)
 434 {
 435         LASSERT(disk_tgt);
 436         LASSERT(*disk_tgt == NULL);
 437         return obd_packmd(exp, disk_tgt, NULL);
 438 }
 439
 440 static inline int obd_free_diskmd(struct obd_export *exp,
 441                                   struct lov_mds_md **disk_tgt)
 442 {
 443         LASSERT(disk_tgt);
 444         LASSERT(*disk_tgt);
 445         return obd_packmd(exp, disk_tgt, NULL);
 446 }
 447
 448 /* Unpack an MD struct from disk to in-memory format.
 449  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 450  *
 451  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 452  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 453  * If @*mem_tgt == NULL, it will be allocated
 454  */
 455 static inline int obd_unpackmd(struct obd_export *exp,
 456                                struct lov_stripe_md **mem_tgt,
 457                                struct lov_mds_md *disk_src,
 458                                int disk_len)
 459 {
 460         int rc;
 461         ENTRY;
 462
 463         EXP_CHECK_OP(exp, unpackmd);
 464         OBD_COUNTER_INCREMENT(exp->exp_obd, unpackmd);
 465
 466         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 467         RETURN(rc);
 468 }
 469
 470 /* helper functions */
 471 static inline int obd_alloc_memmd(struct obd_export *exp,
 472                                   struct lov_stripe_md **mem_tgt)
 473 {
 474         LASSERT(mem_tgt);
 475         LASSERT(*mem_tgt == NULL);
 476         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 477 }
 478
 479 static inline int obd_free_memmd(struct obd_export *exp,
 480                                  struct lov_stripe_md **mem_tgt)
 481 {
 482         LASSERT(mem_tgt);
 483         LASSERT(*mem_tgt);
 484         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 485 }
 486
 487 static inline int obd_revalidate_md(struct obd_export *exp, struct obdo *obdo,
 488                                     struct lov_stripe_md *ea,
 489                                     struct obd_trans_info *oti)
 490 {
 491         int rc;
 492         ENTRY;
 493
 494         EXP_CHECK_OP(exp, revalidate_md);
 495         OBD_COUNTER_INCREMENT(exp->exp_obd, revalidate_md);
 496
 497         rc = OBP(exp->exp_obd, revalidate_md)(exp, obdo, ea, oti);
 498         RETURN(rc);
 499 }
 500
 501 static inline int obd_create(struct obd_export *exp, struct obdo *obdo,
 502                              void *acl, int acl_size,
 503                              struct lov_stripe_md **ea,
 504                              struct obd_trans_info *oti)
 505 {
 506         int rc;
 507         ENTRY;
 508
 509         EXP_CHECK_OP(exp, create);
 510         OBD_COUNTER_INCREMENT(exp->exp_obd, create);
 511
 512         rc = OBP(exp->exp_obd, create)(exp, obdo, acl, acl_size, ea, oti);
 513         RETURN(rc);
 514 }
 515
 516 static inline int obd_destroy(struct obd_export *exp, struct obdo *obdo,
 517                               struct lov_stripe_md *ea,
 518                               struct obd_trans_info *oti)
 519 {
 520         int rc;
 521         ENTRY;
 522
 523         EXP_CHECK_OP(exp, destroy);
 524         OBD_COUNTER_INCREMENT(exp->exp_obd, destroy);
 525
 526         rc = OBP(exp->exp_obd, destroy)(exp, obdo, ea, oti);
 527         RETURN(rc);
 528 }
 529
 530 static inline int obd_getattr(struct obd_export *exp, struct obdo *obdo,
 531                               struct lov_stripe_md *ea)
 532 {
 533         int rc;
 534         ENTRY;
 535
 536         EXP_CHECK_OP(exp, getattr);
 537         OBD_COUNTER_INCREMENT(exp->exp_obd, getattr);
 538
 539         rc = OBP(exp->exp_obd, getattr)(exp, obdo, ea);
 540         RETURN(rc);
 541 }
 542
 543 static inline int obd_getattr_async(struct obd_export *exp,
 544                                     struct obdo *obdo, struct lov_stripe_md *ea,
 545                                     struct ptlrpc_request_set *set)
 546 {
 547         int rc;
 548         ENTRY;
 549
 550         EXP_CHECK_OP(exp, getattr);
 551         OBD_COUNTER_INCREMENT(exp->exp_obd, getattr);
 552
 553         rc = OBP(exp->exp_obd, getattr_async)(exp, obdo, ea, set);
 554         RETURN(rc);
 555 }
 556
 557 static inline int obd_setattr(struct obd_export *exp, struct obdo *obdo,
 558                               struct lov_stripe_md *ea,
 559                               struct obd_trans_info *oti,
 560                               struct lustre_capa *capa)
 561 {
 562         int rc;
 563         ENTRY;
 564
 565         EXP_CHECK_OP(exp, setattr);
 566         OBD_COUNTER_INCREMENT(exp->exp_obd, setattr);
 567
 568         rc = OBP(exp->exp_obd, setattr)(exp, obdo, ea, oti, capa);
 569         RETURN(rc);
 570 }
 571 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 572                                int priority)
 573 {
 574         struct obd_device *obd = imp->imp_obd;
 575         int rc;
 576         ENTRY;
 577
 578         OBD_CHECK_DEV_ACTIVE(obd);
 579         OBD_CHECK_OP(obd, add_conn, -EOPNOTSUPP);
 580         OBD_COUNTER_INCREMENT(obd, add_conn);
 581
 582         rc = OBP(obd, add_conn)(imp, uuid, priority);
 583         RETURN(rc);
 584 }
 585
 586 static inline int obd_del_conn(struct obd_import *imp,
 587                                struct obd_uuid *uuid)
 588 {
 589         struct obd_device *obd = imp->imp_obd;
 590         int rc;
 591         ENTRY;
 592
 593         OBD_CHECK_DEV_ACTIVE(obd);
 594         OBD_CHECK_OP(obd, del_conn, -EOPNOTSUPP);
 595         OBD_COUNTER_INCREMENT(obd, del_conn);
 596
 597         rc = OBP(obd, del_conn)(imp, uuid);
 598         RETURN(rc);
 599 }
 600
 601
 602 static inline int obd_connect(struct lustre_handle *conn,
 603                               struct obd_device *obd,
 604                               struct obd_uuid *cluuid,
 605                               struct obd_connect_data *data,
 606                               unsigned long flags)
 607 {
 608         int rc;
 609         ENTRY;
 610
 611         OBD_CHECK_DEV_ACTIVE(obd);
 612         OBD_CHECK_OP(obd, connect, -EOPNOTSUPP);
 613         OBD_COUNTER_INCREMENT(obd, connect);
 614
 615         rc = OBP(obd, connect)(conn, obd, cluuid, data, flags);
 616         RETURN(rc);
 617 }
 618
 619 static inline int obd_connect_post(struct obd_export *exp,
 620                                    unsigned initial,
 621                                    unsigned long flags)
 622 {
 623         int rc;
 624         ENTRY;
 625
 626         OBD_CHECK_DEV_ACTIVE(exp->exp_obd);
 627         if (!OBT(exp->exp_obd) || !OBP((exp->exp_obd), connect_post))
 628                 RETURN(0);
 629         OBD_COUNTER_INCREMENT(exp->exp_obd, connect_post);
 630         rc = OBP(exp->exp_obd, connect_post)(exp, initial, flags);
 631         RETURN(rc);
 632 }
 633
 634 static inline int obd_disconnect(struct obd_export *exp,
 635                                  unsigned long flags)
 636 {
 637         int rc;
 638         ENTRY;
 639
 640         EXP_CHECK_OP(exp, disconnect);
 641         OBD_COUNTER_INCREMENT(exp->exp_obd, disconnect);
 642
 643         rc = OBP(exp->exp_obd, disconnect)(exp, flags);
 644         RETURN(rc);
 645 }
 646
 647 static inline int obd_init_export(struct obd_export *exp)
 648 {
 649         int rc = 0;
 650
 651         ENTRY;
 652         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 653             OBP((exp)->exp_obd, init_export))
 654                 rc = OBP(exp->exp_obd, init_export)(exp);
 655         RETURN(rc);
 656 }
 657
 658 static inline int obd_destroy_export(struct obd_export *exp)
 659 {
 660         ENTRY;
 661         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 662             OBP((exp)->exp_obd, destroy_export))
 663                 OBP(exp->exp_obd, destroy_export)(exp);
 664         RETURN(0);
 665 }
 666
 667 static inline struct dentry *
 668 obd_lvfs_id2dentry(struct obd_export *exp, __u64 ino,
 669                    __u32 gen, __u64 gr)
 670 {
 671         LASSERT(exp->exp_obd);
 672
 673         return lvfs_id2dentry(&exp->exp_obd->obd_lvfs_ctxt,
 674                               ino, gen, gr, exp->exp_obd);
 675 }
 676
 677 #ifndef time_before
 678 #define time_before(t1, t2) ((long)t2 - (long)t1 > 0)
 679 #endif
 680
 681 /* @max_age is the oldest time in jiffies that we accept using a cached data.
 682  * If the cache is older than @max_age we will get a new value from the
 683  * target.  Use a value of "jiffies + HZ" to guarantee freshness. */
 684 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
 685                              unsigned long max_age)
 686 {
 687         int rc = 0;
 688         ENTRY;
 689
 690         if (obd == NULL)
 691                 RETURN(-EINVAL);
 692
 693         OBD_CHECK_OP(obd, statfs, -EOPNOTSUPP);
 694         OBD_COUNTER_INCREMENT(obd, statfs);
 695
 696         CDEBUG(D_SUPER, "osfs %lu, max_age %lu\n", obd->obd_osfs_age, max_age);
 697         if (time_before(obd->obd_osfs_age, max_age)) {
 698                 rc = OBP(obd, statfs)(obd, osfs, max_age);
 699                 if (rc == 0) {
 700                         spin_lock(&obd->obd_osfs_lock);
 701                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
 702                         obd->obd_osfs_age = jiffies;
 703                         spin_unlock(&obd->obd_osfs_lock);
 704                 }
 705         } else {
 706                 CDEBUG(D_SUPER, "using cached obd_statfs data\n");
 707                 spin_lock(&obd->obd_osfs_lock);
 708                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
 709                 spin_unlock(&obd->obd_osfs_lock);
 710         }
 711         RETURN(rc);
 712 }
 713
 714 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
 715                            struct lov_stripe_md *ea, obd_size start,
 716                            obd_size end)
 717 {
 718         int rc;
 719         ENTRY;
 720
 721         OBD_CHECK_OP(exp->exp_obd, sync, -EOPNOTSUPP);
 722         OBD_COUNTER_INCREMENT(exp->exp_obd, sync);
 723
 724         rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end);
 725         RETURN(rc);
 726 }
 727
 728 static inline int obd_punch(struct obd_export *exp, struct obdo *oa,
 729                             struct lov_stripe_md *ea, obd_size start,
 730                             obd_size end, struct obd_trans_info *oti,
 731                             struct lustre_capa *capa)
 732 {
 733         int rc;
 734         ENTRY;
 735
 736         EXP_CHECK_OP(exp, punch);
 737         OBD_COUNTER_INCREMENT(exp->exp_obd, punch);
 738
 739         rc = OBP(exp->exp_obd, punch)(exp, oa, ea, start, end, oti, capa);
 740         RETURN(rc);
 741 }
 742
 743 static inline int obd_brw(int cmd, struct obd_export *exp, struct obdo *oa,
 744                           struct lov_stripe_md *ea, obd_count oa_bufs,
 745                           struct brw_page *pg, struct obd_trans_info *oti)
 746 {
 747         int rc;
 748         ENTRY;
 749
 750         EXP_CHECK_OP(exp, brw);
 751         OBD_COUNTER_INCREMENT(exp->exp_obd, brw);
 752
 753         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
 754                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
 755                        "or OBD_BRW_CHECK\n");
 756                 LBUG();
 757         }
 758
 759         rc = OBP(exp->exp_obd, brw)(cmd, exp, oa, ea, oa_bufs, pg, oti);
 760         RETURN(rc);
 761 }
 762
 763 static inline int obd_brw_async(int cmd, struct obd_export *exp,
 764                                 struct obdo *oa, struct lov_stripe_md *ea,
 765                                 obd_count oa_bufs, struct brw_page *pg,
 766                                 struct ptlrpc_request_set *set,
 767                                 struct obd_trans_info *oti)
 768 {
 769         int rc;
 770         ENTRY;
 771
 772         EXP_CHECK_OP(exp, brw_async);
 773         OBD_COUNTER_INCREMENT(exp->exp_obd, brw_async);
 774
 775         if (!(cmd & OBD_BRW_RWMASK)) {
 776                 CERROR("obd_brw: cmd must be OBD_BRW_READ or OBD_BRW_WRITE\n");
 777                 LBUG();
 778         }
 779
 780         rc = OBP(exp->exp_obd, brw_async)(cmd, exp, oa, ea, oa_bufs, pg, set,
 781                                           oti);
 782         RETURN(rc);
 783 }
 784
 785 static inline int obd_prep_async_page(struct obd_export *exp,
 786                                       struct lov_stripe_md *lsm,
 787                                       struct lov_oinfo *loi,
 788                                       struct page *page, obd_off offset,
 789                                       struct obd_async_page_ops *ops,
 790                                       void *data, void **res)
 791 {
 792         int ret;
 793         ENTRY;
 794
 795         OBD_CHECK_OP(exp->exp_obd, prep_async_page, -EOPNOTSUPP);
 796         OBD_COUNTER_INCREMENT(exp->exp_obd, prep_async_page);
 797
 798         ret = OBP(exp->exp_obd, prep_async_page)(exp, lsm, loi, page, offset,
 799                                                  ops, data, res);
 800         RETURN(ret);
 801 }
 802
 803 static inline int obd_queue_async_io(struct obd_export *exp,
 804                                      struct lov_stripe_md *lsm,
 805                                      struct lov_oinfo *loi, void *cookie,
 806                                      int cmd, obd_off off, int count,
 807                                      obd_flags brw_flags, obd_flags async_flags)
 808 {
 809         int rc;
 810         ENTRY;
 811
 812         OBD_CHECK_OP(exp->exp_obd, queue_async_io, -EOPNOTSUPP);
 813         OBD_COUNTER_INCREMENT(exp->exp_obd, queue_async_io);
 814         LASSERT(cmd & OBD_BRW_RWMASK);
 815
 816         rc = OBP(exp->exp_obd, queue_async_io)(exp, lsm, loi, cookie, cmd, off,
 817                                                count, brw_flags, async_flags);
 818         RETURN(rc);
 819 }
 820
 821 static inline int obd_set_async_flags(struct obd_export *exp,
 822                                       struct lov_stripe_md *lsm,
 823                                       struct lov_oinfo *loi, void *cookie,
 824                                       obd_flags async_flags)
 825 {
 826         int rc;
 827         ENTRY;
 828
 829         OBD_CHECK_OP(exp->exp_obd, set_async_flags, -EOPNOTSUPP);
 830         OBD_COUNTER_INCREMENT(exp->exp_obd, set_async_flags);
 831
 832         rc = OBP(exp->exp_obd, set_async_flags)(exp, lsm, loi, cookie,
 833                                                 async_flags);
 834         RETURN(rc);
 835 }
 836
 837 static inline int obd_queue_group_io(struct obd_export *exp,
 838                                      struct lov_stripe_md *lsm,
 839                                      struct lov_oinfo *loi,
 840                                      struct obd_io_group *oig,
 841                                      void *cookie, int cmd, obd_off off,
 842                                      int count, obd_flags brw_flags,
 843                                      obd_flags async_flags)
 844 {
 845         int rc;
 846         ENTRY;
 847
 848         OBD_CHECK_OP(exp->exp_obd, queue_group_io, -EOPNOTSUPP);
 849         OBD_COUNTER_INCREMENT(exp->exp_obd, queue_group_io);
 850         LASSERT(cmd & OBD_BRW_RWMASK);
 851
 852         rc = OBP(exp->exp_obd, queue_group_io)(exp, lsm, loi, oig, cookie,
 853                                                cmd, off, count, brw_flags,
 854                                                async_flags);
 855         RETURN(rc);
 856 }
 857
 858 static inline int obd_trigger_group_io(struct obd_export *exp,
 859                                        struct lov_stripe_md *lsm,
 860                                        struct lov_oinfo *loi,
 861                                        struct obd_io_group *oig)
 862 {
 863         int rc;
 864         ENTRY;
 865
 866         OBD_CHECK_OP(exp->exp_obd, trigger_group_io, -EOPNOTSUPP);
 867         OBD_COUNTER_INCREMENT(exp->exp_obd, trigger_group_io);
 868
 869         rc = OBP(exp->exp_obd, trigger_group_io)(exp, lsm, loi, oig);
 870         RETURN(rc);
 871 }
 872
 873 static inline int obd_teardown_async_page(struct obd_export *exp,
 874                                           struct lov_stripe_md *lsm,
 875                                           struct lov_oinfo *loi, void *cookie)
 876 {
 877         int rc;
 878         ENTRY;
 879
 880         OBD_CHECK_OP(exp->exp_obd, teardown_async_page, -EOPNOTSUPP);
 881         OBD_COUNTER_INCREMENT(exp->exp_obd, teardown_async_page);
 882
 883         rc = OBP(exp->exp_obd, teardown_async_page)(exp, lsm, loi, cookie);
 884         RETURN(rc);
 885 }
 886
 887 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
 888                              int objcount, struct obd_ioobj *obj,
 889                              int niocount, struct niobuf_remote *remote,
 890                              struct niobuf_local *local,
 891                              struct obd_trans_info *oti,
 892                              struct lustre_capa *capa)
 893 {
 894         int rc;
 895         ENTRY;
 896
 897         OBD_CHECK_OP(exp->exp_obd, preprw, -EOPNOTSUPP);
 898         OBD_COUNTER_INCREMENT(exp->exp_obd, preprw);
 899
 900         rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, niocount,
 901                                        remote, local, oti, capa);
 902         RETURN(rc);
 903 }
 904
 905 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
 906                                int objcount, struct obd_ioobj *obj,
 907                                int niocount, struct niobuf_local *local,
 908                                struct obd_trans_info *oti, int rc)
 909 {
 910         ENTRY;
 911
 912         OBD_CHECK_OP(exp->exp_obd, commitrw, -EOPNOTSUPP);
 913         OBD_COUNTER_INCREMENT(exp->exp_obd, commitrw);
 914
 915         rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj, niocount,
 916                                          local, oti, rc);
 917         RETURN(rc);
 918 }
 919
 920 static inline int obd_do_cow(struct obd_export *exp, struct obd_ioobj *obj,
 921                             int objcount,struct niobuf_remote *rnb)
 922 {
 923         int rc;
 924         ENTRY;
 925
 926         /* there are cases when write_extents is not implemented. */
 927         if (!OBP(exp->exp_obd, do_cow))
 928                 RETURN(0);
 929
 930         OBD_COUNTER_INCREMENT(exp->exp_obd, do_cow);
 931
 932         rc = OBP(exp->exp_obd, do_cow)(exp, obj, objcount, rnb);
 933
 934         RETURN(rc);
 935 }
 936
 937 static inline int obd_write_extents(struct obd_export *exp,
 938                                     struct obd_ioobj *obj,
 939                                     int objcount, int niocount,
 940                                     struct niobuf_local *local,
 941                                     int rc)
 942 {
 943         ENTRY;
 944
 945         /* there are cases when write_extents is not implemented. */
 946         if (!OBP(exp->exp_obd, write_extents))
 947                 RETURN(0);
 948
 949         OBD_COUNTER_INCREMENT(exp->exp_obd, write_extents);
 950
 951         rc = OBP(exp->exp_obd, write_extents)(exp, obj, objcount, niocount,
 952                                               local, rc);
 953         RETURN(rc);
 954 }
 955
 956 static inline int obd_adjust_kms(struct obd_export *exp,
 957                                  struct lov_stripe_md *lsm,
 958                                  obd_off size, int shrink)
 959 {
 960         int rc;
 961         ENTRY;
 962
 963         OBD_CHECK_OP(exp->exp_obd, adjust_kms, -EOPNOTSUPP);
 964         OBD_COUNTER_INCREMENT(exp->exp_obd, adjust_kms);
 965
 966         rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
 967         RETURN(rc);
 968 }
 969
 970 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
 971                                 int len, void *karg, void *uarg)
 972 {
 973         int rc;
 974         ENTRY;
 975
 976         EXP_CHECK_OP(exp, iocontrol);
 977         OBD_COUNTER_INCREMENT(exp->exp_obd, iocontrol);
 978
 979         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
 980         RETURN(rc);
 981 }
 982
 983 static inline int obd_enqueue(struct obd_export *exp, struct lov_stripe_md *ea,
 984                               __u32 type, ldlm_policy_data_t *policy,
 985                               __u32 mode, int *flags, void *bl_cb, void *cp_cb,
 986                               void *gl_cb, void *data, __u32 lvb_len,
 987                               void *lvb_swabber, struct lustre_handle *lockh)
 988 {
 989         int rc;
 990         ENTRY;
 991
 992         EXP_CHECK_OP(exp, enqueue);
 993         OBD_COUNTER_INCREMENT(exp->exp_obd, enqueue);
 994
 995         rc = OBP(exp->exp_obd, enqueue)(exp, ea, type, policy, mode, flags,
 996                                         bl_cb, cp_cb, gl_cb, data, lvb_len,
 997                                         lvb_swabber, lockh);
 998         RETURN(rc);
 999 }
1000
1001 static inline int obd_match(struct obd_export *exp, struct lov_stripe_md *ea,
1002                             __u32 type, ldlm_policy_data_t *policy, __u32 mode,
1003                             int *flags, void *data, struct lustre_handle *lockh)
1004 {
1005         int rc;
1006         ENTRY;
1007
1008         EXP_CHECK_OP(exp, match);
1009         OBD_COUNTER_INCREMENT(exp->exp_obd, match);
1010
1011         rc = OBP(exp->exp_obd, match)(exp, ea, type, policy, mode, flags, data,
1012                                       lockh);
1013         RETURN(rc);
1014 }
1015
1016 static inline int obd_change_cbdata(struct obd_export *exp,
1017                                     struct lov_stripe_md *lsm,
1018                                     ldlm_iterator_t it, void *data)
1019 {
1020         int rc;
1021         ENTRY;
1022
1023         EXP_CHECK_OP(exp, change_cbdata);
1024         OBD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata);
1025
1026         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1027         RETURN(rc);
1028 }
1029
1030 static inline int obd_cancel(struct obd_export *exp,
1031                              struct lov_stripe_md *ea, __u32 mode,
1032                              struct lustre_handle *lockh)
1033 {
1034         int rc;
1035         ENTRY;
1036
1037         EXP_CHECK_OP(exp, cancel);
1038         OBD_COUNTER_INCREMENT(exp->exp_obd, cancel);
1039
1040         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1041         RETURN(rc);
1042 }
1043
1044 static inline int obd_cancel_unused(struct obd_export *exp,
1045                                     struct lov_stripe_md *ea, int flags,
1046                                     void *opaque)
1047 {
1048         int rc;
1049         ENTRY;
1050
1051         EXP_CHECK_OP(exp, cancel_unused);
1052         OBD_COUNTER_INCREMENT(exp->exp_obd, cancel_unused);
1053
1054         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1055         RETURN(rc);
1056 }
1057
1058
1059 static inline int obd_san_preprw(int cmd, struct obd_export *exp,
1060                                  struct obdo *oa,
1061                                  int objcount, struct obd_ioobj *obj,
1062                                  int niocount, struct niobuf_remote *remote)
1063 {
1064         int rc;
1065
1066         EXP_CHECK_OP(exp, preprw);
1067         OBD_COUNTER_INCREMENT(exp->exp_obd, preprw);
1068
1069         rc = OBP(exp->exp_obd, san_preprw)(cmd, exp, oa, objcount, obj,
1070                                            niocount, remote);
1071         class_export_put(exp);
1072         return(rc);
1073 }
1074
1075 static inline int obd_pin(struct obd_export *exp, obd_id ino, __u32 gen,
1076                           int type, struct obd_client_handle *handle, int flag)
1077 {
1078         int rc;
1079
1080         EXP_CHECK_OP(exp, pin);
1081         OBD_COUNTER_INCREMENT(exp->exp_obd, pin);
1082
1083         rc = OBP(exp->exp_obd, pin)(exp, ino, gen, type, handle, flag);
1084         return(rc);
1085 }
1086
1087 static inline int obd_unpin(struct obd_export *exp,
1088                             struct obd_client_handle *handle, int flag)
1089 {
1090         int rc;
1091
1092         EXP_CHECK_OP(exp, unpin);
1093         OBD_COUNTER_INCREMENT(exp->exp_obd, unpin);
1094
1095         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1096         return(rc);
1097 }
1098
1099
1100 static inline void obd_import_event(struct obd_device *obd,
1101                                     struct obd_import *imp,
1102                                     enum obd_import_event event)
1103 {
1104         if (!obd) {
1105                 CERROR("NULL device\n");
1106                 EXIT;
1107                 return;
1108         }
1109         if (obd->obd_set_up && OBP(obd, import_event)) {
1110                 OBD_COUNTER_INCREMENT(obd, import_event);
1111                 OBP(obd, import_event)(obd, imp, event);
1112         }
1113 }
1114
1115 static inline int obd_llog_connect(struct obd_export *exp,
1116                                         struct llogd_conn_body *body)
1117 {
1118         ENTRY;
1119         EXP_CHECK_OP(exp, llog_connect);
1120         return OBP(exp->exp_obd, llog_connect)(exp, body);
1121 }
1122
1123 static inline int obd_notify(struct obd_device *obd, struct obd_device *watched,
1124                              int active, void *data)
1125 {
1126         OBD_CHECK_DEV(obd);
1127         if (!obd->obd_set_up) {
1128                 CERROR("obd %s not set up\n", obd->obd_name);
1129                 return -EINVAL;
1130         }
1131
1132         if (!OBP(obd, notify)) {
1133                 CERROR("obd %s has no notify handler\n", obd->obd_name);
1134                 return -ENOSYS;
1135         }
1136
1137         OBD_COUNTER_INCREMENT(obd, notify);
1138         return OBP(obd, notify)(obd, watched, active, data);
1139 }
1140
1141 static inline int obd_register_observer(struct obd_device *obd,
1142                                         struct obd_device *observer)
1143 {
1144         ENTRY;
1145         OBD_CHECK_DEV(obd);
1146         if (obd->obd_observer && observer)
1147                 RETURN(-EALREADY);
1148         obd->obd_observer = observer;
1149         RETURN(0);
1150 }
1151
1152 static inline int obd_init_ea_size(struct obd_export *exp, int size, int size2)
1153 {
1154         int rc;
1155         ENTRY;
1156         LASSERT(OBP(exp->exp_obd, init_ea_size) != NULL);
1157         OBD_COUNTER_INCREMENT(exp->exp_obd, init_ea_size);
1158         rc = OBP(exp->exp_obd, init_ea_size)(exp, size, size2);
1159         RETURN(rc);
1160 }
1161
1162 static inline int md_getstatus(struct obd_export *exp, struct lustre_id *id)
1163 {
1164         int rc;
1165
1166         EXP_CHECK_MD_OP(exp, getstatus);
1167         MD_COUNTER_INCREMENT(exp->exp_obd, getstatus);
1168         rc = MDP(exp->exp_obd, getstatus)(exp, id);
1169         RETURN(rc);
1170 }
1171
1172 static inline int md_delete_inode(struct obd_export *exp,
1173                                   struct lustre_id *id)
1174 {
1175         int rc;
1176         ENTRY;
1177
1178         if (MDP(exp->exp_obd, delete_inode) == NULL)
1179                 RETURN(0);
1180
1181         MD_COUNTER_INCREMENT(exp->exp_obd, delete_inode);
1182         rc = MDP(exp->exp_obd, delete_inode)(exp, id);
1183         RETURN(rc);
1184 }
1185
1186 static inline int md_getattr(struct obd_export *exp, struct lustre_id *id,
1187                              __u64 valid, const char *xattr_name,
1188                              const void *xattr_data, unsigned int xattr_datalen,
1189                              unsigned int ea_size, struct obd_capa *ocapa,
1190                              struct ptlrpc_request **request)
1191 {
1192         int rc;
1193         ENTRY;
1194         EXP_CHECK_MD_OP(exp, getattr);
1195         MD_COUNTER_INCREMENT(exp->exp_obd, getattr);
1196         rc = MDP(exp->exp_obd, getattr)(exp, id, valid, xattr_name,
1197                                         xattr_data, xattr_datalen,
1198                                         ea_size, ocapa, request);
1199         RETURN(rc);
1200 }
1201
1202 static inline int md_access_check(struct obd_export *exp, struct lustre_id *id,
1203                                   struct ptlrpc_request **request)
1204 {
1205         int rc;
1206         ENTRY;
1207         EXP_CHECK_MD_OP(exp, access_check);
1208         MD_COUNTER_INCREMENT(exp->exp_obd, access_check);
1209         rc = MDP(exp->exp_obd, access_check)(exp, id, request);
1210         RETURN(rc);
1211 }
1212
1213 static inline int md_change_cbdata(struct obd_export *exp, struct lustre_id *id,
1214                                    ldlm_iterator_t it, void *data)
1215 {
1216         int rc;
1217         ENTRY;
1218         EXP_CHECK_MD_OP(exp, change_cbdata);
1219         MD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata);
1220         rc = MDP(exp->exp_obd, change_cbdata)(exp, id, it, data);
1221         RETURN(rc);
1222 }
1223
1224 static inline int md_change_cbdata_name(struct obd_export *exp,
1225                                         struct lustre_id *id, char *name,
1226                                         int namelen, struct lustre_id *id2,
1227                                         ldlm_iterator_t it, void *data)
1228 {
1229         int rc;
1230
1231         /* this seem to be needed only for lmv. */
1232         if (!MDP(exp->exp_obd, change_cbdata_name))
1233                 return 0;
1234
1235         ENTRY;
1236
1237         MD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata_name);
1238         rc = MDP(exp->exp_obd, change_cbdata_name)(exp, id, name, namelen,
1239                                                    id2, it, data);
1240         RETURN(rc);
1241 }
1242
1243 static inline int md_close(struct obd_export *exp,
1244                            struct mdc_op_data *op_data,
1245                            struct obd_client_handle *och,
1246                            struct ptlrpc_request **request)
1247 {
1248         int rc;
1249         ENTRY;
1250         EXP_CHECK_MD_OP(exp, close);
1251         MD_COUNTER_INCREMENT(exp->exp_obd, close);
1252         rc = MDP(exp->exp_obd, close)(exp, op_data, och, request);
1253         RETURN(rc);
1254 }
1255
1256 static inline int md_create(struct obd_export *exp, struct mdc_op_data *op_data,
1257                             const void *data, int datalen, int mode,
1258                             __u32 uid, __u32 gid, __u64 rdev,
1259                             struct ptlrpc_request **request)
1260 {
1261         int rc;
1262         ENTRY;
1263         EXP_CHECK_MD_OP(exp, create);
1264         MD_COUNTER_INCREMENT(exp->exp_obd, create);
1265         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1266                                        uid, gid, rdev, request);
1267         RETURN(rc);
1268 }
1269
1270 static inline int md_done_writing(struct obd_export *exp, struct obdo *obdo)
1271 {
1272         int rc;
1273         ENTRY;
1274         EXP_CHECK_MD_OP(exp, done_writing);
1275         MD_COUNTER_INCREMENT(exp->exp_obd, done_writing);
1276         rc = MDP(exp->exp_obd, done_writing)(exp, obdo);
1277         RETURN(rc);
1278 }
1279
1280 static inline int md_enqueue(struct obd_export *exp, int lock_type,
1281                              struct lookup_intent *it, int lock_mode,
1282                              struct mdc_op_data *data,
1283                              struct lustre_handle *lockh,
1284                              void *lmm, int lmmsize,
1285                              ldlm_completion_callback cb_completion,
1286                              ldlm_blocking_callback cb_blocking,
1287                              void *cb_data)
1288 {
1289         int rc;
1290         ENTRY;
1291         EXP_CHECK_MD_OP(exp, enqueue);
1292         MD_COUNTER_INCREMENT(exp->exp_obd, enqueue);
1293         rc = MDP(exp->exp_obd, enqueue)(exp, lock_type, it, lock_mode,
1294                                         data, lockh, lmm, lmmsize,
1295                                         cb_completion, cb_blocking,
1296                                         cb_data);
1297         RETURN(rc);
1298 }
1299
1300 static inline int md_getattr_lock(struct obd_export *exp, struct lustre_id *id,
1301                                   char *filename, int namelen,
1302                                   __u64 valid, unsigned int ea_size,
1303                                   struct ptlrpc_request **request)
1304 {
1305         int rc;
1306         ENTRY;
1307         EXP_CHECK_MD_OP(exp, getattr_lock);
1308         MD_COUNTER_INCREMENT(exp->exp_obd, getattr_lock);
1309         rc = MDP(exp->exp_obd, getattr_lock)(exp, id, filename, namelen,
1310                                              valid, ea_size, request);
1311         RETURN(rc);
1312 }
1313
1314 static inline int md_intent_lock(struct obd_export *exp,
1315                                  struct lustre_id *pid, const char *name,
1316                                  int len, void *lmm, int lmmsize,
1317                                  struct lustre_id *cid,
1318                                  struct lookup_intent *it,
1319                                  int flags, struct ptlrpc_request **reqp,
1320                                  ldlm_blocking_callback cb_blocking)
1321 {
1322         int rc;
1323         ENTRY;
1324         EXP_CHECK_MD_OP(exp, intent_lock);
1325         MD_COUNTER_INCREMENT(exp->exp_obd, intent_lock);
1326         rc = MDP(exp->exp_obd, intent_lock)(exp, pid, name, len, lmm,
1327                                             lmmsize, cid, it, flags,
1328                                             reqp, cb_blocking);
1329         RETURN(rc);
1330 }
1331
1332 static inline int md_link(struct obd_export *exp, struct mdc_op_data *data,
1333                           struct ptlrpc_request **request)
1334 {
1335         int rc;
1336         ENTRY;
1337         EXP_CHECK_MD_OP(exp, link);
1338         MD_COUNTER_INCREMENT(exp->exp_obd, link);
1339         rc = MDP(exp->exp_obd, link)(exp, data, request);
1340         RETURN(rc);
1341 }
1342
1343 static inline int md_rename(struct obd_export *exp, struct mdc_op_data *data,
1344                             const char *old, int oldlen,
1345                             const char *new, int newlen,
1346                             struct ptlrpc_request **request)
1347 {
1348         int rc;
1349         ENTRY;
1350         EXP_CHECK_MD_OP(exp, rename);
1351         MD_COUNTER_INCREMENT(exp->exp_obd, rename);
1352         rc = MDP(exp->exp_obd, rename)(exp, data, old, oldlen, new,
1353                                        newlen, request);
1354         RETURN(rc);
1355 }
1356
1357 static inline int md_setattr(struct obd_export *exp, struct mdc_op_data *data,
1358                              struct iattr *iattr, void *ea, int ealen,
1359                              void *ea2, int ea2len, void *ea3, int ea3len,
1360                              struct ptlrpc_request **request)
1361 {
1362         int rc;
1363         ENTRY;
1364         EXP_CHECK_MD_OP(exp, setattr);
1365         MD_COUNTER_INCREMENT(exp->exp_obd, setattr);
1366         rc = MDP(exp->exp_obd, setattr)(exp, data, iattr, ea, ealen,
1367                                         ea2, ea2len, ea3, ea3len, request);
1368         RETURN(rc);
1369 }
1370
1371 static inline int md_sync(struct obd_export *exp, struct lustre_id *id,
1372                                struct ptlrpc_request **request)
1373 {
1374         int rc;
1375         ENTRY;
1376         EXP_CHECK_MD_OP(exp, sync);
1377         MD_COUNTER_INCREMENT(exp->exp_obd, sync);
1378         rc = MDP(exp->exp_obd, sync)(exp, id, request);
1379         RETURN(rc);
1380 }
1381
1382 static inline int md_readpage(struct obd_export *exp, struct lustre_id *id,
1383                               __u64 offset, struct page *page,
1384                               struct ptlrpc_request **request)
1385 {
1386         int rc;
1387         ENTRY;
1388         EXP_CHECK_MD_OP(exp, readpage);
1389         MD_COUNTER_INCREMENT(exp->exp_obd, readpage);
1390         rc = MDP(exp->exp_obd, readpage)(exp, id, offset, page, request);
1391         RETURN(rc);
1392 }
1393
1394 static inline int md_unlink(struct obd_export *exp, struct mdc_op_data *data,
1395                             struct ptlrpc_request **request)
1396 {
1397         int rc;
1398         ENTRY;
1399         EXP_CHECK_MD_OP(exp, unlink);
1400         MD_COUNTER_INCREMENT(exp->exp_obd, unlink);
1401         rc = MDP(exp->exp_obd, unlink)(exp, data, request);
1402         RETURN(rc);
1403 }
1404
1405 static inline struct obd_device *md_get_real_obd(struct obd_export *exp,
1406                                                  struct lustre_id *fid)
1407 {
1408         ENTRY;
1409         if (MDP(exp->exp_obd, get_real_obd) == NULL)
1410                 return exp->exp_obd;
1411         MD_COUNTER_INCREMENT(exp->exp_obd, get_real_obd);
1412         return MDP(exp->exp_obd, get_real_obd)(exp, fid);
1413 }
1414
1415 static inline int md_valid_attrs(struct obd_export *exp,
1416                                  struct lustre_id *id)
1417 {
1418         ENTRY;
1419         EXP_CHECK_MD_OP(exp, valid_attrs);
1420         MD_COUNTER_INCREMENT(exp->exp_obd, valid_attrs);
1421         return MDP(exp->exp_obd, valid_attrs)(exp, id);
1422 }
1423
1424 static inline int md_req2lustre_md(struct obd_export *exp,
1425                                    struct ptlrpc_request *req,
1426                                    unsigned int offset,
1427                                    struct obd_export *osc_exp,
1428                                    struct lustre_md *md)
1429 {
1430         ENTRY;
1431         EXP_CHECK_MD_OP(exp, req2lustre_md);
1432         MD_COUNTER_INCREMENT(exp->exp_obd, req2lustre_md);
1433         return MDP(exp->exp_obd, req2lustre_md)(exp, req, offset, osc_exp, md);
1434 }
1435
1436 static inline int md_set_open_replay_data(struct obd_export *exp,
1437                                           struct obd_client_handle *och,
1438                                           struct ptlrpc_request *open_req)
1439 {
1440         ENTRY;
1441         EXP_CHECK_MD_OP(exp, set_open_replay_data);
1442         MD_COUNTER_INCREMENT(exp->exp_obd, set_open_replay_data);
1443         return MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req);
1444 }
1445
1446 static inline int md_clear_open_replay_data(struct obd_export *exp,
1447                                             struct obd_client_handle *och)
1448 {
1449         ENTRY;
1450         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
1451         MD_COUNTER_INCREMENT(exp->exp_obd, clear_open_replay_data);
1452         return MDP(exp->exp_obd, clear_open_replay_data)(exp, och);
1453 }
1454
1455 static inline int md_store_inode_generation(struct obd_export *exp,
1456                                             struct ptlrpc_request *req,
1457                                             int reqoff, int repoff)
1458 {
1459         ENTRY;
1460         EXP_CHECK_MD_OP(exp, store_inode_generation);
1461         MD_COUNTER_INCREMENT(exp->exp_obd, store_inode_generation);
1462         return MDP(exp->exp_obd, store_inode_generation)(exp, req,
1463                    reqoff, repoff);
1464 }
1465
1466 static inline int md_set_lock_data(struct obd_export *exp, __u64 *l,
1467                                    void *data)
1468 {
1469         ENTRY;
1470         EXP_CHECK_MD_OP(exp, set_lock_data);
1471         MD_COUNTER_INCREMENT(exp->exp_obd, set_lock_data);
1472         return MDP(exp->exp_obd, set_lock_data)(exp, l, data);
1473 }
1474
1475 /* OBD Metadata Support */
1476
1477 extern int obd_init_caches(void);
1478 extern void obd_cleanup_caches(void);
1479
1480 /* support routines */
1481 extern kmem_cache_t *obdo_cachep;
1482 static inline struct obdo *obdo_alloc(void)
1483 {
1484         struct obdo *oa;
1485
1486         OBD_SLAB_ALLOC(oa, obdo_cachep, GFP_KERNEL,
1487                        sizeof(*oa));
1488         return oa;
1489 }
1490
1491 static inline void obdo_free(struct obdo *oa)
1492 {
1493         OBD_SLAB_FREE(oa, obdo_cachep, sizeof(*oa));
1494 }
1495
1496 static inline void obdo2id(struct lustre_id *id,
1497                            struct obdo *oa)
1498 {
1499         LASSERT(oa && id);
1500         id_ino(id) = oa->o_id;
1501         id_fid(id) = oa->o_fid;
1502         id_group(id) = oa->o_mds;
1503         id_gen(id) = oa->o_generation;
1504 }
1505
1506 static inline void id2obdo(struct obdo *oa,
1507                            struct lustre_id *id)
1508 {
1509         LASSERT(oa && id);
1510         oa->o_id = id_ino(id);
1511         oa->o_fid = id_fid(id);
1512         oa->o_mds = id_group(id);
1513         oa->o_generation = id_gen(id);
1514 }
1515
1516 #if !defined(__KERNEL__) || (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
1517 #define to_kdev_t(dev) dev
1518 #define kdev_t_to_nr(dev) dev
1519 #endif
1520
1521 /* I'm as embarrassed about this as you are.
1522  *
1523  * <shaver> // XXX do not look into _superhack with remaining eye
1524  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
1525 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
1526 extern void (*ptlrpc_abort_inflight_superhack)(struct obd_import *imp);
1527
1528 /* sysctl.c */
1529 extern void obd_sysctl_init (void);
1530 extern void obd_sysctl_clean (void);
1531
1532 /* uuid.c  */
1533 typedef __u8 class_uuid_t[16];
1534 //int class_uuid_parse(struct obd_uuid in, class_uuid_t out);
1535 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
1536
1537 /* lustre_peer.c    */
1538 int lustre_uuid_to_peer(char *uuid, __u32 *peer_nal, ptl_nid_t *peer_nid);
1539 int class_add_uuid(char *uuid, __u64 nid, __u32 nal);
1540 int class_del_uuid (char *uuid);
1541 void class_init_uuidlist(void);
1542 void class_exit_uuidlist(void);
1543
1544 /* mea.c */
1545 int mea_name2idx(struct mea *mea, char *name, int namelen);
1546 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
1547
1548 #endif /* __LINUX_OBD_CLASS_H */