lustre/include/linux/obd_class.h

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  *  Copyright (C) 2001-2003 Cluster File Systems, Inc.
   5  *
   6  *   This file is part of Lustre, http://www.lustre.org.
   7  *
   8  *   Lustre is free software; you can redistribute it and/or
   9  *   modify it under the terms of version 2 of the GNU General Public
  10  *   License as published by the Free Software Foundation.
  11  *
  12  *   Lustre is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *   GNU General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU General Public License
  18  *   along with Lustre; if not, write to the Free Software
  19  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  *
  21  */
  22
  23 #ifndef __LINUX_CLASS_OBD_H
  24 #define __LINUX_CLASS_OBD_H
  25
  26 #ifndef __KERNEL__
  27 #include <sys/types.h>
  28 #include <libcfs/list.h>
  29 #else
  30 #include <asm/segment.h>
  31 #include <asm/uaccess.h>
  32 #include <linux/types.h>
  33 #include <linux/fs.h>
  34 #include <linux/time.h>
  35 #include <linux/timer.h>
  36 #endif
  37
  38 #include <linux/obd_support.h>
  39 #include <linux/lustre_import.h>
  40 #include <linux/lustre_net.h>
  41 #include <linux/obd.h>
  42 #include <linux/lustre_lib.h>
  43 #include <linux/lustre_idl.h>
  44 #include <linux/lprocfs_status.h>
  45 #include <linux/lustre_log.h>
  46
  47 /* OBD Device Declarations */
  48 #define MAX_OBD_DEVICES 256
  49 extern struct obd_device obd_dev[MAX_OBD_DEVICES];
  50 extern spinlock_t obd_dev_lock;
  51
  52 /* OBD Operations Declarations */
  53 extern struct obd_device *class_conn2obd(struct lustre_handle *);
  54 extern struct obd_device *class_exp2obd(struct obd_export *);
  55
  56 /* genops.c */
  57 struct obd_export *class_conn2export(struct lustre_handle *);
  58 int class_register_type(struct obd_ops *ops, struct md_ops *md_ops,
  59                         struct lprocfs_vars *, char *nm);
  60 int class_unregister_type(char *nm);
  61
  62 struct obd_device *class_newdev(struct obd_type *type);
  63 void class_release_dev(struct obd_device *obd);
  64
  65 int class_name2dev(char *name);
  66 struct obd_device *class_name2obd(char *name);
  67 int class_uuid2dev(struct obd_uuid *uuid);
  68 struct obd_device *class_uuid2obd(struct obd_uuid *uuid);
  69 struct obd_device * class_find_client_obd(struct obd_uuid *tgt_uuid,
  70                                           char * typ_name,
  71                                           struct obd_uuid *grp_uuid);
  72 struct obd_device * class_devices_in_group(struct obd_uuid *grp_uuid,
  73                                            int *next);
  74
  75 int oig_init(struct obd_io_group **oig);
  76 void oig_add_one(struct obd_io_group *oig,
  77                   struct oig_callback_context *occ);
  78 void oig_complete_one(struct obd_io_group *oig,
  79                        struct oig_callback_context *occ, int rc);
  80 void oig_release(struct obd_io_group *oig);
  81 int oig_wait(struct obd_io_group *oig);
  82
  83 /* obd_config.c */
  84 int class_process_config(struct lustre_cfg *lcfg);
  85
  86 /* Passed as data param to class_config_parse_handler() */
  87 struct config_llog_instance {
  88         char * cfg_instance;
  89         struct obd_uuid cfg_uuid;
  90         ptl_nid_t cfg_local_nid;
  91 };
  92
  93 int class_config_process_llog(struct llog_ctxt *ctxt, char *name,
  94                               struct config_llog_instance *cfg);
  95 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
  96                            struct config_llog_instance *cfg);
  97
  98 struct lustre_profile {
  99         struct list_head lp_list;
 100         char *lp_profile;
 101         char *lp_lov;
 102         char *lp_lmv;
 103 };
 104
 105 struct lustre_profile *class_get_profile(char * prof);
 106 void class_del_profile(char *prof);
 107
 108 #define class_export_rpc_get(exp)                                       \
 109 ({                                                                      \
 110         atomic_inc(&(exp)->exp_rpc_count);                              \
 111         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",    \
 112                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 113         class_export_get(exp);                                          \
 114 })
 115
 116 #define class_export_rpc_put(exp)                                       \
 117 ({                                                                      \
 118         atomic_dec(&(exp)->exp_rpc_count);                              \
 119         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",    \
 120                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 121         class_export_put(exp);                                          \
 122 })
 123
 124 #define class_export_get(exp)                                                  \
 125 ({                                                                             \
 126         struct obd_export *exp_ = exp;                                         \
 127         atomic_inc(&exp_->exp_refcount);                                       \
 128         CDEBUG(D_INFO, "GETting export %p : new refcount %d\n", exp_,          \
 129                atomic_read(&exp_->exp_refcount));                              \
 130         exp_;                                                                  \
 131 })
 132
 133 #define class_export_put(exp)                                                  \
 134 do {                                                                           \
 135         LASSERT((exp) != NULL);                                                \
 136         CDEBUG(D_INFO, "PUTting export %p : new refcount %d\n", (exp),         \
 137                atomic_read(&(exp)->exp_refcount) - 1);                         \
 138         LASSERT(atomic_read(&(exp)->exp_refcount) > 0);                        \
 139         LASSERT(atomic_read(&(exp)->exp_refcount) < 0x5a5a5a);                 \
 140         __class_export_put(exp);                                               \
 141 } while (0)
 142
 143 void __class_export_put(struct obd_export *);
 144 struct obd_export *class_new_export(struct obd_device *obddev);
 145 void class_unlink_export(struct obd_export *exp);
 146
 147 struct obd_import *class_import_get(struct obd_import *);
 148 void class_import_put(struct obd_import *);
 149 struct obd_import *class_new_import(void);
 150 void class_destroy_import(struct obd_import *exp);
 151
 152 struct obd_type *class_get_type(char *name);
 153 void class_put_type(struct obd_type *type);
 154 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 155                   struct obd_uuid *cluuid);
 156 int class_disconnect(struct obd_export *exp, unsigned long flags);
 157 void class_disconnect_exports(struct obd_device *obddev, unsigned long flags);
 158 void class_disconnect_stale_exports(struct obd_device *obddev, unsigned long flags);
 159
 160 /* generic operations shared by various OBD types */
 161 int class_multi_setup(struct obd_device *obddev, uint32_t len, void *data);
 162 int class_multi_cleanup(struct obd_device *obddev);
 163
 164 /* obdo.c */
 165 #ifdef __KERNEL__
 166 void obdo_from_iattr(struct obdo *oa, struct iattr *attr, unsigned ia_valid);
 167 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, obd_valid valid);
 168 void obdo_from_inode(struct obdo *dst, struct inode *src, obd_valid valid);
 169 void obdo_refresh_inode(struct inode *dst, struct obdo *src, obd_valid valid);
 170 void obdo_to_inode(struct inode *dst, struct obdo *src, obd_valid valid);
 171 #endif
 172 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_valid valid);
 173 int obdo_cmp_md(struct obdo *dst, struct obdo *src, obd_valid compare);
 174 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
 175
 176 #define OBT(dev)        (dev)->obd_type
 177 #define OBP(dev, op)    (dev)->obd_type->typ_ops->o_ ## op
 178 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
 179 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 180
 181 /* Ensure obd_setup: used for cleanup which must be called
 182    while obd is stopping */
 183 #define OBD_CHECK_DEV(obd)                                      \
 184 do {                                                            \
 185         if (!(obd)) {                                           \
 186                 CERROR("NULL device\n");                        \
 187                 RETURN(-ENODEV);                                \
 188         }                                                       \
 189 } while (0)
 190
 191 #define OBD_CHECK_DEV_STOPPING(obd)                             \
 192 do {                                                            \
 193         OBD_CHECK_DEV(obd);                                     \
 194         if (!(obd)->obd_set_up) {                               \
 195                 CERROR("Device %d not setup\n",                 \
 196                        (obd)->obd_minor);                       \
 197                 RETURN(-ENODEV);                                \
 198         }                                                       \
 199                                                                 \
 200         if (!(obd)->obd_stopping) {                             \
 201                 CERROR("Device %d not stopping\n",              \
 202                        (obd)->obd_minor);                       \
 203                 RETURN(-ENODEV);                                \
 204         }                                                       \
 205 } while (0)
 206
 207 /* ensure obd_setup and !obd_stopping */
 208 #define OBD_CHECK_DEV_ACTIVE(obd)                               \
 209 do {                                                            \
 210         OBD_CHECK_DEV(obd);                                     \
 211         if (!(obd)->obd_set_up || (obd)->obd_stopping) {        \
 212                 CERROR("Device %d not setup\n",                 \
 213                        (obd)->obd_minor);                       \
 214                 RETURN(-ENODEV);                                \
 215         }                                                       \
 216 } while (0)
 217
 218
 219 #ifdef LPROCFS
 220 #define OBD_COUNTER_OFFSET(op)                                  \
 221         ((offsetof(struct obd_ops, o_ ## op) -                  \
 222           offsetof(struct obd_ops, o_iocontrol))                \
 223          / sizeof(((struct obd_ops *)(0))->o_iocontrol))
 224
 225 #define OBD_COUNTER_INCREMENT(obd, op)                          \
 226         if ((obd)->obd_stats != NULL) {                         \
 227                 unsigned int coffset;                           \
 228                 coffset = (unsigned int)(obd)->obd_cntr_base +  \
 229                         OBD_COUNTER_OFFSET(op);                 \
 230                 LASSERT(coffset < (obd)->obd_stats->ls_num);    \
 231                 lprocfs_counter_incr((obd)->obd_stats, coffset);\
 232         }
 233
 234 #define MD_COUNTER_OFFSET(op)                                  \
 235         ((offsetof(struct md_ops, m_ ## op) -                  \
 236           offsetof(struct md_ops, m_getstatus))                \
 237          / sizeof(((struct md_ops *)(0))->m_getstatus))
 238
 239 #define MD_COUNTER_INCREMENT(obd, op)                           \
 240         if ((obd)->md_stats != NULL) {                          \
 241                 unsigned int coffset;                           \
 242                 coffset = (unsigned int)(obd)->md_cntr_base +   \
 243                         MD_COUNTER_OFFSET(op);                  \
 244                 LASSERT(coffset < (obd)->md_stats->ls_num);     \
 245                 lprocfs_counter_incr((obd)->md_stats, coffset); \
 246         }
 247
 248 #else
 249 #define OBD_COUNTER_OFFSET(op)
 250 #define OBD_COUNTER_INCREMENT(obd, op)
 251 #define MD_COUNTER_INCREMENT(obd, op)
 252 #endif
 253
 254 #define OBD_CHECK_MD_OP(obd, op, err)                           \
 255 do {                                                            \
 256         if (!OBT(obd) || !MDP((obd), op)) {\
 257                 if (err)                                        \
 258                         CERROR("md_" #op ": dev %s/%d no operation\n", \
 259                                obd->obd_name, obd->obd_minor);  \
 260                 RETURN(err);                                    \
 261         }                                                       \
 262 } while (0)
 263
 264 #define EXP_CHECK_MD_OP(exp, op)                                \
 265 do {                                                            \
 266         if ((exp) == NULL) {                                    \
 267                 CERROR("obd_" #op ": NULL export\n");           \
 268                 portals_debug_dumplog();                        \
 269                 RETURN(-ENODEV);                                \
 270         }                                                       \
 271         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 272                 CERROR("obd_" #op ": cleaned up obd\n");        \
 273                 RETURN(-EOPNOTSUPP);                            \
 274         }                                                       \
 275         if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
 276                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 277                        (exp)->exp_obd->obd_name,                \
 278                        (exp)->exp_obd->obd_minor);              \
 279                 RETURN(-EOPNOTSUPP);                            \
 280         }                                                       \
 281 } while (0)
 282
 283 #define OBD_CHECK_OP(obd, op, err)                              \
 284 do {                                                            \
 285         if (!OBT(obd) || !OBP((obd), op)) {\
 286                 if (err)                                        \
 287                         CERROR("obd_" #op ": dev %s/%d no operation\n", \
 288                                obd->obd_name, obd->obd_minor);  \
 289                 RETURN(err);                                    \
 290         }                                                       \
 291 } while (0)
 292
 293 #define EXP_CHECK_OP(exp, op)                                   \
 294 do {                                                            \
 295         if ((exp) == NULL) {                                    \
 296                 CERROR("obd_" #op ": NULL export\n");           \
 297                 portals_debug_dumplog();                        \
 298                 RETURN(-ENODEV);                                \
 299         }                                                       \
 300         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 301                 CERROR("obd_" #op ": cleaned up obd\n");        \
 302                 RETURN(-EOPNOTSUPP);                            \
 303         }                                                       \
 304         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 305                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 306                        (exp)->exp_obd->obd_name,                \
 307                        (exp)->exp_obd->obd_minor);              \
 308                 RETURN(-EOPNOTSUPP);                            \
 309         }                                                       \
 310 } while (0)
 311
 312 #define CTXT_CHECK_OP(ctxt, op, err)                            \
 313 do {                                                            \
 314         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {        \
 315                 if (err)                                        \
 316                         CERROR("lop_" #op ": dev %d no operation\n",    \
 317                                ctxt->loc_obd->obd_minor);               \
 318                 RETURN(err);                                    \
 319         }                                                       \
 320 } while (0)
 321
 322 static inline int obd_get_info(struct obd_export *exp, __u32 keylen,
 323                                void *key, __u32 *vallen, void *val)
 324 {
 325         int rc;
 326         ENTRY;
 327
 328         EXP_CHECK_OP(exp, get_info);
 329         OBD_COUNTER_INCREMENT(exp->exp_obd, get_info);
 330
 331         rc = OBP(exp->exp_obd, get_info)(exp, keylen, key, vallen, val);
 332         RETURN(rc);
 333 }
 334
 335 static inline int obd_set_info(struct obd_export *exp, obd_count keylen,
 336                                void *key, obd_count vallen, void *val)
 337 {
 338         int rc;
 339         ENTRY;
 340
 341         EXP_CHECK_OP(exp, set_info);
 342         OBD_COUNTER_INCREMENT(exp->exp_obd, set_info);
 343
 344         rc = OBP(exp->exp_obd, set_info)(exp, keylen, key, vallen, val);
 345         RETURN(rc);
 346 }
 347
 348 static inline int obd_setup(struct obd_device *obd, int datalen, void *data)
 349 {
 350         int rc;
 351         ENTRY;
 352
 353         OBD_CHECK_OP(obd, setup, -EOPNOTSUPP);
 354         OBD_COUNTER_INCREMENT(obd, setup);
 355
 356         rc = OBP(obd, setup)(obd, datalen, data);
 357         RETURN(rc);
 358 }
 359
 360 static inline int obd_precleanup(struct obd_device *obd, int flags)
 361 {
 362         int rc;
 363         ENTRY;
 364
 365         OBD_CHECK_OP(obd, precleanup, 0);
 366         OBD_COUNTER_INCREMENT(obd, precleanup);
 367
 368         rc = OBP(obd, precleanup)(obd, flags);
 369         RETURN(rc);
 370 }
 371
 372 static inline int obd_cleanup(struct obd_device *obd, int flags)
 373 {
 374         int rc;
 375         ENTRY;
 376
 377         OBD_CHECK_DEV_STOPPING(obd);
 378         OBD_CHECK_OP(obd, cleanup, 0);
 379         OBD_COUNTER_INCREMENT(obd, cleanup);
 380
 381         rc = OBP(obd, cleanup)(obd, flags);
 382         RETURN(rc);
 383 }
 384
 385 static inline int
 386 obd_process_config(struct obd_device *obd, int datalen, void *data)
 387 {
 388         int rc;
 389         ENTRY;
 390
 391         OBD_CHECK_OP(obd, process_config, -EOPNOTSUPP);
 392         OBD_COUNTER_INCREMENT(obd, process_config);
 393
 394         rc = OBP(obd, process_config)(obd, datalen, data);
 395         RETURN(rc);
 396 }
 397
 398 /* Pack an in-memory MD struct for storage on disk.
 399  * Returns +ve size of packed MD (0 for free), or -ve error.
 400  *
 401  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 402  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 403  * If @*disk_tgt == NULL, it will be allocated
 404  */
 405 static inline int obd_packmd(struct obd_export *exp,
 406                              struct lov_mds_md **disk_tgt,
 407                              struct lov_stripe_md *mem_src)
 408 {
 409         int rc;
 410         ENTRY;
 411
 412         EXP_CHECK_OP(exp, packmd);
 413         OBD_COUNTER_INCREMENT(exp->exp_obd, packmd);
 414
 415         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 416         RETURN(rc);
 417 }
 418
 419 static inline int obd_size_diskmd(struct obd_export *exp,
 420                                   struct lov_stripe_md *mem_src)
 421 {
 422         return obd_packmd(exp, NULL, mem_src);
 423 }
 424
 425 /* helper functions */
 426 static inline int obd_alloc_diskmd(struct obd_export *exp,
 427                                    struct lov_mds_md **disk_tgt)
 428 {
 429         LASSERT(disk_tgt);
 430         LASSERT(*disk_tgt == NULL);
 431         return obd_packmd(exp, disk_tgt, NULL);
 432 }
 433
 434 static inline int obd_free_diskmd(struct obd_export *exp,
 435                                   struct lov_mds_md **disk_tgt)
 436 {
 437         LASSERT(disk_tgt);
 438         LASSERT(*disk_tgt);
 439         return obd_packmd(exp, disk_tgt, NULL);
 440 }
 441
 442 /* Unpack an MD struct from disk to in-memory format.
 443  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 444  *
 445  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 446  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 447  * If @*mem_tgt == NULL, it will be allocated
 448  */
 449 static inline int obd_unpackmd(struct obd_export *exp,
 450                                struct lov_stripe_md **mem_tgt,
 451                                struct lov_mds_md *disk_src,
 452                                int disk_len)
 453 {
 454         int rc;
 455         ENTRY;
 456
 457         EXP_CHECK_OP(exp, unpackmd);
 458         OBD_COUNTER_INCREMENT(exp->exp_obd, unpackmd);
 459
 460         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 461         RETURN(rc);
 462 }
 463
 464 /* helper functions */
 465 static inline int obd_alloc_memmd(struct obd_export *exp,
 466                                   struct lov_stripe_md **mem_tgt)
 467 {
 468         LASSERT(mem_tgt);
 469         LASSERT(*mem_tgt == NULL);
 470         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 471 }
 472
 473 static inline int obd_free_memmd(struct obd_export *exp,
 474                                  struct lov_stripe_md **mem_tgt)
 475 {
 476         LASSERT(mem_tgt);
 477         LASSERT(*mem_tgt);
 478         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 479 }
 480
 481 static inline int obd_revalidate_md(struct obd_export *exp, struct obdo *obdo,
 482                                     struct lov_stripe_md *ea,
 483                                     struct obd_trans_info *oti)
 484 {
 485         int rc;
 486         ENTRY;
 487
 488         EXP_CHECK_OP(exp, revalidate_md);
 489         OBD_COUNTER_INCREMENT(exp->exp_obd, revalidate_md);
 490
 491         rc = OBP(exp->exp_obd, revalidate_md)(exp, obdo, ea, oti);
 492         RETURN(rc);
 493 }
 494
 495 static inline int obd_create(struct obd_export *exp, struct obdo *obdo,
 496                              struct lov_stripe_md **ea,
 497                              struct obd_trans_info *oti)
 498 {
 499         int rc;
 500         ENTRY;
 501
 502         EXP_CHECK_OP(exp, create);
 503         OBD_COUNTER_INCREMENT(exp->exp_obd, create);
 504
 505         rc = OBP(exp->exp_obd, create)(exp, obdo, ea, oti);
 506         RETURN(rc);
 507 }
 508
 509 static inline int obd_destroy(struct obd_export *exp, struct obdo *obdo,
 510                               struct lov_stripe_md *ea,
 511                               struct obd_trans_info *oti)
 512 {
 513         int rc;
 514         ENTRY;
 515
 516         EXP_CHECK_OP(exp, destroy);
 517         OBD_COUNTER_INCREMENT(exp->exp_obd, destroy);
 518
 519         rc = OBP(exp->exp_obd, destroy)(exp, obdo, ea, oti);
 520         RETURN(rc);
 521 }
 522
 523 static inline int obd_getattr(struct obd_export *exp, struct obdo *obdo,
 524                               struct lov_stripe_md *ea)
 525 {
 526         int rc;
 527         ENTRY;
 528
 529         EXP_CHECK_OP(exp, getattr);
 530         OBD_COUNTER_INCREMENT(exp->exp_obd, getattr);
 531
 532         rc = OBP(exp->exp_obd, getattr)(exp, obdo, ea);
 533         RETURN(rc);
 534 }
 535
 536 static inline int obd_getattr_async(struct obd_export *exp,
 537                                     struct obdo *obdo, struct lov_stripe_md *ea,
 538                                     struct ptlrpc_request_set *set)
 539 {
 540         int rc;
 541         ENTRY;
 542
 543         EXP_CHECK_OP(exp, getattr);
 544         OBD_COUNTER_INCREMENT(exp->exp_obd, getattr);
 545
 546         rc = OBP(exp->exp_obd, getattr_async)(exp, obdo, ea, set);
 547         RETURN(rc);
 548 }
 549
 550 static inline int obd_setattr(struct obd_export *exp, struct obdo *obdo,
 551                               struct lov_stripe_md *ea,
 552                               struct obd_trans_info *oti)
 553 {
 554         int rc;
 555         ENTRY;
 556
 557         EXP_CHECK_OP(exp, setattr);
 558         OBD_COUNTER_INCREMENT(exp->exp_obd, setattr);
 559
 560         rc = OBP(exp->exp_obd, setattr)(exp, obdo, ea, oti);
 561         RETURN(rc);
 562 }
 563 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 564                                int priority)
 565 {
 566         struct obd_device *obd = imp->imp_obd;
 567         int rc;
 568         ENTRY;
 569
 570         OBD_CHECK_DEV_ACTIVE(obd);
 571         OBD_CHECK_OP(obd, add_conn, -EOPNOTSUPP);
 572         OBD_COUNTER_INCREMENT(obd, add_conn);
 573
 574         rc = OBP(obd, add_conn)(imp, uuid, priority);
 575         RETURN(rc);
 576 }
 577
 578 static inline int obd_del_conn(struct obd_import *imp,
 579                                struct obd_uuid *uuid)
 580 {
 581         struct obd_device *obd = imp->imp_obd;
 582         int rc;
 583         ENTRY;
 584
 585         OBD_CHECK_DEV_ACTIVE(obd);
 586         OBD_CHECK_OP(obd, del_conn, -EOPNOTSUPP);
 587         OBD_COUNTER_INCREMENT(obd, del_conn);
 588
 589         rc = OBP(obd, del_conn)(imp, uuid);
 590         RETURN(rc);
 591 }
 592
 593
 594 static inline int obd_connect(struct lustre_handle *conn,
 595                               struct obd_device *obd,
 596                               struct obd_uuid *cluuid,
 597                               struct obd_connect_data *data,
 598                               unsigned long flags)
 599 {
 600         int rc;
 601         ENTRY;
 602
 603         OBD_CHECK_DEV_ACTIVE(obd);
 604         OBD_CHECK_OP(obd, connect, -EOPNOTSUPP);
 605         OBD_COUNTER_INCREMENT(obd, connect);
 606
 607         rc = OBP(obd, connect)(conn, obd, cluuid, data, flags);
 608         RETURN(rc);
 609 }
 610
 611 static inline int obd_connect_post(struct obd_export *exp,
 612                                    unsigned long flags)
 613 {
 614         int rc;
 615         ENTRY;
 616
 617         OBD_CHECK_DEV_ACTIVE(exp->exp_obd);
 618         if (!OBT(exp->exp_obd) || !OBP((exp->exp_obd), connect_post))
 619                 RETURN(0);
 620         OBD_COUNTER_INCREMENT(exp->exp_obd, connect_post);
 621         rc = OBP(exp->exp_obd, connect_post)(exp, flags);
 622         RETURN(rc);
 623 }
 624
 625 static inline int obd_disconnect(struct obd_export *exp,
 626                                  unsigned long flags)
 627 {
 628         int rc;
 629         ENTRY;
 630
 631         EXP_CHECK_OP(exp, disconnect);
 632         OBD_COUNTER_INCREMENT(exp->exp_obd, disconnect);
 633
 634         rc = OBP(exp->exp_obd, disconnect)(exp, flags);
 635         RETURN(rc);
 636 }
 637
 638 static inline int obd_getready(struct obd_export *exp)
 639 {
 640         int rc;
 641         ENTRY;
 642
 643         if (!OBP(exp->exp_obd, getready))
 644                 RETURN(0);
 645         rc = OBP(exp->exp_obd, getready)(exp);
 646         RETURN(rc);
 647 }
 648
 649 static inline int obd_init_export(struct obd_export *exp)
 650 {
 651         int rc = 0;
 652
 653         ENTRY;
 654         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 655             OBP((exp)->exp_obd, init_export))
 656                 rc = OBP(exp->exp_obd, init_export)(exp);
 657         RETURN(rc);
 658 }
 659
 660 static inline int obd_destroy_export(struct obd_export *exp)
 661 {
 662         ENTRY;
 663         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 664             OBP((exp)->exp_obd, destroy_export))
 665                 OBP(exp->exp_obd, destroy_export)(exp);
 666         RETURN(0);
 667 }
 668
 669 static inline struct dentry *
 670 obd_lvfs_id2dentry(struct obd_export *exp, __u64 ino,
 671                    __u32 gen, __u64 gr)
 672 {
 673         LASSERT(exp->exp_obd);
 674
 675         return lvfs_id2dentry(&exp->exp_obd->obd_lvfs_ctxt,
 676                               ino, gen, gr, exp->exp_obd);
 677 }
 678
 679 #ifndef time_before
 680 #define time_before(t1, t2) ((long)t2 - (long)t1 > 0)
 681 #endif
 682
 683 /* @max_age is the oldest time in jiffies that we accept using a cached data.
 684  * If the cache is older than @max_age we will get a new value from the
 685  * target.  Use a value of "jiffies + HZ" to guarantee freshness. */
 686 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
 687                              unsigned long max_age)
 688 {
 689         int rc = 0;
 690         ENTRY;
 691
 692         if (obd == NULL)
 693                 RETURN(-EINVAL);
 694
 695         OBD_CHECK_OP(obd, statfs, -EOPNOTSUPP);
 696         OBD_COUNTER_INCREMENT(obd, statfs);
 697
 698         CDEBUG(D_SUPER, "osfs %lu, max_age %lu\n", obd->obd_osfs_age, max_age);
 699         if (time_before(obd->obd_osfs_age, max_age)) {
 700                 rc = OBP(obd, statfs)(obd, osfs, max_age);
 701                 if (rc == 0) {
 702                         spin_lock(&obd->obd_osfs_lock);
 703                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
 704                         obd->obd_osfs_age = jiffies;
 705                         spin_unlock(&obd->obd_osfs_lock);
 706                 }
 707         } else {
 708                 CDEBUG(D_SUPER, "using cached obd_statfs data\n");
 709                 spin_lock(&obd->obd_osfs_lock);
 710                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
 711                 spin_unlock(&obd->obd_osfs_lock);
 712         }
 713         RETURN(rc);
 714 }
 715
 716 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
 717                            struct lov_stripe_md *ea, obd_size start,
 718                            obd_size end)
 719 {
 720         int rc;
 721         ENTRY;
 722
 723         OBD_CHECK_OP(exp->exp_obd, sync, -EOPNOTSUPP);
 724         OBD_COUNTER_INCREMENT(exp->exp_obd, sync);
 725
 726         rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end);
 727         RETURN(rc);
 728 }
 729
 730 static inline int obd_punch(struct obd_export *exp, struct obdo *oa,
 731                             struct lov_stripe_md *ea, obd_size start,
 732                             obd_size end, struct obd_trans_info *oti)
 733 {
 734         int rc;
 735         ENTRY;
 736
 737         EXP_CHECK_OP(exp, punch);
 738         OBD_COUNTER_INCREMENT(exp->exp_obd, punch);
 739
 740         rc = OBP(exp->exp_obd, punch)(exp, oa, ea, start, end, oti);
 741         RETURN(rc);
 742 }
 743
 744 static inline int obd_brw(int cmd, struct obd_export *exp, struct obdo *oa,
 745                           struct lov_stripe_md *ea, obd_count oa_bufs,
 746                           struct brw_page *pg, struct obd_trans_info *oti)
 747 {
 748         int rc;
 749         ENTRY;
 750
 751         EXP_CHECK_OP(exp, brw);
 752         OBD_COUNTER_INCREMENT(exp->exp_obd, brw);
 753
 754         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
 755                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
 756                        "or OBD_BRW_CHECK\n");
 757                 LBUG();
 758         }
 759
 760         rc = OBP(exp->exp_obd, brw)(cmd, exp, oa, ea, oa_bufs, pg, oti);
 761         RETURN(rc);
 762 }
 763
 764 static inline int obd_brw_async(int cmd, struct obd_export *exp,
 765                                 struct obdo *oa, struct lov_stripe_md *ea,
 766                                 obd_count oa_bufs, struct brw_page *pg,
 767                                 struct ptlrpc_request_set *set,
 768                                 struct obd_trans_info *oti)
 769 {
 770         int rc;
 771         ENTRY;
 772
 773         EXP_CHECK_OP(exp, brw_async);
 774         OBD_COUNTER_INCREMENT(exp->exp_obd, brw_async);
 775
 776         if (!(cmd & OBD_BRW_RWMASK)) {
 777                 CERROR("obd_brw: cmd must be OBD_BRW_READ or OBD_BRW_WRITE\n");
 778                 LBUG();
 779         }
 780
 781         rc = OBP(exp->exp_obd, brw_async)(cmd, exp, oa, ea, oa_bufs, pg, set,
 782                                           oti);
 783         RETURN(rc);
 784 }
 785
 786 static inline int obd_prep_async_page(struct obd_export *exp,
 787                                       struct lov_stripe_md *lsm,
 788                                       struct lov_oinfo *loi,
 789                                       struct page *page, obd_off offset,
 790                                       struct obd_async_page_ops *ops,
 791                                       void *data, void **res)
 792 {
 793         int ret;
 794         ENTRY;
 795
 796         OBD_CHECK_OP(exp->exp_obd, prep_async_page, -EOPNOTSUPP);
 797         OBD_COUNTER_INCREMENT(exp->exp_obd, prep_async_page);
 798
 799         ret = OBP(exp->exp_obd, prep_async_page)(exp, lsm, loi, page, offset,
 800                                                  ops, data, res);
 801         RETURN(ret);
 802 }
 803
 804 static inline int obd_queue_async_io(struct obd_export *exp,
 805                                      struct lov_stripe_md *lsm,
 806                                      struct lov_oinfo *loi, void *cookie,
 807                                      int cmd, obd_off off, int count,
 808                                      obd_flags brw_flags, obd_flags async_flags)
 809 {
 810         int rc;
 811         ENTRY;
 812
 813         OBD_CHECK_OP(exp->exp_obd, queue_async_io, -EOPNOTSUPP);
 814         OBD_COUNTER_INCREMENT(exp->exp_obd, queue_async_io);
 815         LASSERT(cmd & OBD_BRW_RWMASK);
 816
 817         rc = OBP(exp->exp_obd, queue_async_io)(exp, lsm, loi, cookie, cmd, off,
 818                                                count, brw_flags, async_flags);
 819         RETURN(rc);
 820 }
 821
 822 static inline int obd_set_async_flags(struct obd_export *exp,
 823                                       struct lov_stripe_md *lsm,
 824                                       struct lov_oinfo *loi, void *cookie,
 825                                       obd_flags async_flags)
 826 {
 827         int rc;
 828         ENTRY;
 829
 830         OBD_CHECK_OP(exp->exp_obd, set_async_flags, -EOPNOTSUPP);
 831         OBD_COUNTER_INCREMENT(exp->exp_obd, set_async_flags);
 832
 833         rc = OBP(exp->exp_obd, set_async_flags)(exp, lsm, loi, cookie,
 834                                                 async_flags);
 835         RETURN(rc);
 836 }
 837
 838 static inline int obd_queue_group_io(struct obd_export *exp,
 839                                      struct lov_stripe_md *lsm,
 840                                      struct lov_oinfo *loi,
 841                                      struct obd_io_group *oig,
 842                                      void *cookie, int cmd, obd_off off,
 843                                      int count, obd_flags brw_flags,
 844                                      obd_flags async_flags)
 845 {
 846         int rc;
 847         ENTRY;
 848
 849         OBD_CHECK_OP(exp->exp_obd, queue_group_io, -EOPNOTSUPP);
 850         OBD_COUNTER_INCREMENT(exp->exp_obd, queue_group_io);
 851         LASSERT(cmd & OBD_BRW_RWMASK);
 852
 853         rc = OBP(exp->exp_obd, queue_group_io)(exp, lsm, loi, oig, cookie,
 854                                                cmd, off, count, brw_flags,
 855                                                async_flags);
 856         RETURN(rc);
 857 }
 858
 859 static inline int obd_trigger_group_io(struct obd_export *exp,
 860                                        struct lov_stripe_md *lsm,
 861                                        struct lov_oinfo *loi,
 862                                        struct obd_io_group *oig)
 863 {
 864         int rc;
 865         ENTRY;
 866
 867         OBD_CHECK_OP(exp->exp_obd, trigger_group_io, -EOPNOTSUPP);
 868         OBD_COUNTER_INCREMENT(exp->exp_obd, trigger_group_io);
 869
 870         rc = OBP(exp->exp_obd, trigger_group_io)(exp, lsm, loi, oig);
 871         RETURN(rc);
 872 }
 873
 874 static inline int obd_teardown_async_page(struct obd_export *exp,
 875                                           struct lov_stripe_md *lsm,
 876                                           struct lov_oinfo *loi, void *cookie)
 877 {
 878         int rc;
 879         ENTRY;
 880
 881         OBD_CHECK_OP(exp->exp_obd, teardown_async_page, -EOPNOTSUPP);
 882         OBD_COUNTER_INCREMENT(exp->exp_obd, teardown_async_page);
 883
 884         rc = OBP(exp->exp_obd, teardown_async_page)(exp, lsm, loi, cookie);
 885         RETURN(rc);
 886 }
 887
 888 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
 889                              int objcount, struct obd_ioobj *obj,
 890                              int niocount, struct niobuf_remote *remote,
 891                              struct niobuf_local *local,
 892                              struct obd_trans_info *oti)
 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);
 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 *ea_name, int ea_namelen,
1188                              unsigned int ea_size, struct ptlrpc_request **request)
1189 {
1190         int rc;
1191         ENTRY;
1192         EXP_CHECK_MD_OP(exp, getattr);
1193         MD_COUNTER_INCREMENT(exp->exp_obd, getattr);
1194         rc = MDP(exp->exp_obd, getattr)(exp, id, valid, ea_name, ea_namelen, ea_size, request);
1195         RETURN(rc);
1196 }
1197
1198 static inline int md_change_cbdata(struct obd_export *exp, struct lustre_id *id,
1199                                    ldlm_iterator_t it, void *data)
1200 {
1201         int rc;
1202         ENTRY;
1203         EXP_CHECK_MD_OP(exp, change_cbdata);
1204         MD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata);
1205         rc = MDP(exp->exp_obd, change_cbdata)(exp, id, it, data);
1206         RETURN(rc);
1207 }
1208
1209 static inline int md_change_cbdata_name(struct obd_export *exp,
1210                                         struct lustre_id *id, char *name,
1211                                         int namelen, struct lustre_id *id2,
1212                                         ldlm_iterator_t it, void *data)
1213 {
1214         int rc;
1215
1216         /* this seem to be needed only for lmv. */
1217         if (!MDP(exp->exp_obd, change_cbdata_name))
1218                 return 0;
1219
1220         ENTRY;
1221
1222         MD_COUNTER_INCREMENT(exp->exp_obd, change_cbdata_name);
1223         rc = MDP(exp->exp_obd, change_cbdata_name)(exp, id, name, namelen,
1224                                                    id2, it, data);
1225         RETURN(rc);
1226 }
1227
1228 static inline int md_close(struct obd_export *exp, struct obdo *obdo,
1229                            struct obd_client_handle *och,
1230                            struct ptlrpc_request **request)
1231 {
1232         int rc;
1233         ENTRY;
1234         EXP_CHECK_MD_OP(exp, close);
1235         MD_COUNTER_INCREMENT(exp->exp_obd, close);
1236         rc = MDP(exp->exp_obd, close)(exp, obdo, och, request);
1237         RETURN(rc);
1238 }
1239
1240 static inline int md_create(struct obd_export *exp, struct mdc_op_data *op_data,
1241                             const void *data, int datalen, int mode,
1242                             __u32 uid, __u32 gid, __u64 rdev,
1243                             struct ptlrpc_request **request)
1244 {
1245         int rc;
1246         ENTRY;
1247         EXP_CHECK_MD_OP(exp, create);
1248         MD_COUNTER_INCREMENT(exp->exp_obd, create);
1249         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1250                                        uid, gid, rdev, request);
1251         RETURN(rc);
1252 }
1253
1254 static inline int md_done_writing(struct obd_export *exp, struct obdo *obdo)
1255 {
1256         int rc;
1257         ENTRY;
1258         EXP_CHECK_MD_OP(exp, done_writing);
1259         MD_COUNTER_INCREMENT(exp->exp_obd, done_writing);
1260         rc = MDP(exp->exp_obd, done_writing)(exp, obdo);
1261         RETURN(rc);
1262 }
1263
1264 static inline int md_enqueue(struct obd_export *exp, int lock_type,
1265                              struct lookup_intent *it, int lock_mode,
1266                              struct mdc_op_data *data,
1267                              struct lustre_handle *lockh,
1268                              void *lmm, int lmmsize,
1269                              ldlm_completion_callback cb_completion,
1270                              ldlm_blocking_callback cb_blocking,
1271                              void *cb_data)
1272 {
1273         int rc;
1274         ENTRY;
1275         EXP_CHECK_MD_OP(exp, enqueue);
1276         MD_COUNTER_INCREMENT(exp->exp_obd, enqueue);
1277         rc = MDP(exp->exp_obd, enqueue)(exp, lock_type, it, lock_mode,
1278                                         data, lockh, lmm, lmmsize,
1279                                         cb_completion, cb_blocking,
1280                                         cb_data);
1281         RETURN(rc);
1282 }
1283
1284 static inline int md_getattr_lock(struct obd_export *exp, struct lustre_id *id,
1285                                   char *filename, int namelen,
1286                                   __u64 valid, unsigned int ea_size,
1287                                   struct ptlrpc_request **request)
1288 {
1289         int rc;
1290         ENTRY;
1291         EXP_CHECK_MD_OP(exp, getattr_lock);
1292         MD_COUNTER_INCREMENT(exp->exp_obd, getattr_lock);
1293         rc = MDP(exp->exp_obd, getattr_lock)(exp, id, filename, namelen,
1294                                              valid, ea_size, request);
1295         RETURN(rc);
1296 }
1297
1298 static inline int md_intent_lock(struct obd_export *exp,
1299                                  struct lustre_id *pid, const char *name,
1300                                  int len, void *lmm, int lmmsize,
1301                                  struct lustre_id *cid, struct lookup_intent *it,
1302                                  int flags, struct ptlrpc_request **reqp,
1303                                  ldlm_blocking_callback cb_blocking)
1304 {
1305         int rc;
1306         ENTRY;
1307         EXP_CHECK_MD_OP(exp, intent_lock);
1308         MD_COUNTER_INCREMENT(exp->exp_obd, intent_lock);
1309         rc = MDP(exp->exp_obd, intent_lock)(exp, pid, name, len,
1310                                             lmm, lmmsize, cid, it, flags,
1311                                             reqp, cb_blocking);
1312         RETURN(rc);
1313 }
1314
1315 static inline int md_link(struct obd_export *exp, struct mdc_op_data *data,
1316                           struct ptlrpc_request **request)
1317 {
1318         int rc;
1319         ENTRY;
1320         EXP_CHECK_MD_OP(exp, link);
1321         MD_COUNTER_INCREMENT(exp->exp_obd, link);
1322         rc = MDP(exp->exp_obd, link)(exp, data, request);
1323         RETURN(rc);
1324 }
1325
1326 static inline int md_rename(struct obd_export *exp, struct mdc_op_data *data,
1327                             const char *old, int oldlen,
1328                             const char *new, int newlen,
1329                             struct ptlrpc_request **request)
1330 {
1331         int rc;
1332         ENTRY;
1333         EXP_CHECK_MD_OP(exp, rename);
1334         MD_COUNTER_INCREMENT(exp->exp_obd, rename);
1335         rc = MDP(exp->exp_obd, rename)(exp, data, old, oldlen, new,
1336                                        newlen, request);
1337         RETURN(rc);
1338 }
1339
1340 static inline int md_setattr(struct obd_export *exp, struct mdc_op_data *data,
1341                              struct iattr *iattr, void *ea, int ealen,
1342                              void *ea2, int ea2len,
1343                              struct ptlrpc_request **request)
1344 {
1345         int rc;
1346         ENTRY;
1347         EXP_CHECK_MD_OP(exp, setattr);
1348         MD_COUNTER_INCREMENT(exp->exp_obd, setattr);
1349         rc = MDP(exp->exp_obd, setattr)(exp, data, iattr, ea, ealen,
1350                                         ea2, ea2len, request);
1351         RETURN(rc);
1352 }
1353
1354 static inline int md_sync(struct obd_export *exp, struct lustre_id *id,
1355                                struct ptlrpc_request **request)
1356 {
1357         int rc;
1358         ENTRY;
1359         EXP_CHECK_MD_OP(exp, sync);
1360         MD_COUNTER_INCREMENT(exp->exp_obd, sync);
1361         rc = MDP(exp->exp_obd, sync)(exp, id, request);
1362         RETURN(rc);
1363 }
1364
1365 static inline int md_readpage(struct obd_export *exp, struct lustre_id *id,
1366                               __u64 offset, struct page *page,
1367                               struct ptlrpc_request **request)
1368 {
1369         int rc;
1370         ENTRY;
1371         EXP_CHECK_MD_OP(exp, readpage);
1372         MD_COUNTER_INCREMENT(exp->exp_obd, readpage);
1373         rc = MDP(exp->exp_obd, readpage)(exp, id, offset, page, request);
1374         RETURN(rc);
1375 }
1376
1377 static inline int md_unlink(struct obd_export *exp, struct mdc_op_data *data,
1378                             struct ptlrpc_request **request)
1379 {
1380         int rc;
1381         ENTRY;
1382         EXP_CHECK_MD_OP(exp, unlink);
1383         MD_COUNTER_INCREMENT(exp->exp_obd, unlink);
1384         rc = MDP(exp->exp_obd, unlink)(exp, data, request);
1385         RETURN(rc);
1386 }
1387
1388 static inline struct obd_device *md_get_real_obd(struct obd_export *exp,
1389                                                  struct lustre_id *fid)
1390 {
1391         ENTRY;
1392         if (MDP(exp->exp_obd, get_real_obd) == NULL)
1393                 return exp->exp_obd;
1394         MD_COUNTER_INCREMENT(exp->exp_obd, get_real_obd);
1395         return MDP(exp->exp_obd, get_real_obd)(exp, fid);
1396 }
1397
1398 static inline int md_valid_attrs(struct obd_export *exp,
1399                                  struct lustre_id *id)
1400 {
1401         ENTRY;
1402         EXP_CHECK_MD_OP(exp, valid_attrs);
1403         MD_COUNTER_INCREMENT(exp->exp_obd, valid_attrs);
1404         return MDP(exp->exp_obd, valid_attrs)(exp, id);
1405 }
1406
1407 static inline int md_req2lustre_md(struct obd_export *exp,
1408                                    struct ptlrpc_request *req,
1409                                    unsigned int offset,
1410                                    struct obd_export *osc_exp,
1411                                    struct lustre_md *md)
1412 {
1413         ENTRY;
1414         EXP_CHECK_MD_OP(exp, req2lustre_md);
1415         MD_COUNTER_INCREMENT(exp->exp_obd, req2lustre_md);
1416         return MDP(exp->exp_obd, req2lustre_md)(exp, req, offset, osc_exp, md);
1417 }
1418
1419 static inline int md_set_open_replay_data(struct obd_export *exp,
1420                                           struct obd_client_handle *och,
1421                                           struct ptlrpc_request *open_req)
1422 {
1423         ENTRY;
1424         EXP_CHECK_MD_OP(exp, set_open_replay_data);
1425         MD_COUNTER_INCREMENT(exp->exp_obd, set_open_replay_data);
1426         return MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req);
1427 }
1428
1429 static inline int md_clear_open_replay_data(struct obd_export *exp,
1430                                             struct obd_client_handle *och)
1431 {
1432         ENTRY;
1433         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
1434         MD_COUNTER_INCREMENT(exp->exp_obd, clear_open_replay_data);
1435         return MDP(exp->exp_obd, clear_open_replay_data)(exp, och);
1436 }
1437
1438 static inline int md_store_inode_generation(struct obd_export *exp,
1439                                             struct ptlrpc_request *req,
1440                                             int reqoff, int repoff)
1441 {
1442         ENTRY;
1443         EXP_CHECK_MD_OP(exp, store_inode_generation);
1444         MD_COUNTER_INCREMENT(exp->exp_obd, store_inode_generation);
1445         return MDP(exp->exp_obd, store_inode_generation)(exp, req,
1446                    reqoff, repoff);
1447 }
1448
1449 static inline int md_set_lock_data(struct obd_export *exp, __u64 *l,
1450                                    void *data)
1451 {
1452         ENTRY;
1453         EXP_CHECK_MD_OP(exp, set_lock_data);
1454         MD_COUNTER_INCREMENT(exp->exp_obd, set_lock_data);
1455         return MDP(exp->exp_obd, set_lock_data)(exp, l, data);
1456 }
1457
1458 /* OBD Metadata Support */
1459
1460 extern int obd_init_caches(void);
1461 extern void obd_cleanup_caches(void);
1462
1463 /* support routines */
1464 extern kmem_cache_t *obdo_cachep;
1465 static inline struct obdo *obdo_alloc(void)
1466 {
1467         struct obdo *oa;
1468
1469         OBD_SLAB_ALLOC(oa, obdo_cachep, GFP_KERNEL,
1470                        sizeof(*oa));
1471         return oa;
1472 }
1473
1474 static inline void obdo_free(struct obdo *oa)
1475 {
1476         OBD_SLAB_FREE(oa, obdo_cachep, sizeof(*oa));
1477 }
1478
1479 static inline void obdo2id(struct lustre_id *id,
1480                            struct obdo *oa)
1481 {
1482         LASSERT(oa && id);
1483         id_ino(id) = oa->o_id;
1484         id_fid(id) = oa->o_fid;
1485         id_group(id) = oa->o_mds;
1486         id_gen(id) = oa->o_generation;
1487 }
1488
1489 static inline void id2obdo(struct obdo *oa,
1490                            struct lustre_id *id)
1491 {
1492         LASSERT(oa && id);
1493         oa->o_id = id_ino(id);
1494         oa->o_fid = id_fid(id);
1495         oa->o_mds = id_group(id);
1496         oa->o_generation = id_gen(id);
1497 }
1498
1499 #if !defined(__KERNEL__) || (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
1500 #define to_kdev_t(dev) dev
1501 #define kdev_t_to_nr(dev) dev
1502 #endif
1503
1504 /* I'm as embarrassed about this as you are.
1505  *
1506  * <shaver> // XXX do not look into _superhack with remaining eye
1507  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
1508 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
1509 extern void (*ptlrpc_abort_inflight_superhack)(struct obd_import *imp);
1510
1511 /* sysctl.c */
1512 extern void obd_sysctl_init (void);
1513 extern void obd_sysctl_clean (void);
1514
1515 /* uuid.c  */
1516 typedef __u8 class_uuid_t[16];
1517 //int class_uuid_parse(struct obd_uuid in, class_uuid_t out);
1518 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
1519
1520 /* lustre_peer.c    */
1521 int lustre_uuid_to_peer(char *uuid, __u32 *peer_nal, ptl_nid_t *peer_nid);
1522 int class_add_uuid(char *uuid, __u64 nid, __u32 nal);
1523 int class_del_uuid (char *uuid);
1524 void class_init_uuidlist(void);
1525 void class_exit_uuidlist(void);
1526
1527 /* mea.c */
1528 int mea_name2idx(struct mea *mea, char *name, int namelen);
1529 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
1530
1531 #endif /* __LINUX_OBD_CLASS_H */