lustre/include/obd_class.h

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see
  20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright  2008 Sun Microsystems, Inc. All rights reserved
  30  * Use is subject to license terms.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  */
  36 #ifndef __CLASS_OBD_H
  37 #define __CLASS_OBD_H
  38
  39 #ifndef __KERNEL__
  40 # include <liblustre.h>
  41 #endif
  42
  43 #include <obd_support.h>
  44 #include <lustre_import.h>
  45 #include <lustre_net.h>
  46 #include <obd.h>
  47 #include <lustre_lib.h>
  48 #include <lustre/lustre_idl.h>
  49 #include <lprocfs_status.h>
  50
  51 #if defined(__linux__)
  52 #include <linux/obd_class.h>
  53 #elif defined(__APPLE__)
  54 #include <darwin/obd_class.h>
  55 #elif defined(__WINNT__)
  56 #include <winnt/obd_class.h>
  57 #else
  58 #error Unsupported operating system.
  59 #endif
  60
  61 /* OBD Device Declarations */
  62 extern struct obd_device *obd_devs[MAX_OBD_DEVICES];
  63 extern cfs_spinlock_t obd_dev_lock;
  64
  65 /* OBD Operations Declarations */
  66 extern struct obd_device *class_conn2obd(struct lustre_handle *);
  67 extern struct obd_device *class_exp2obd(struct obd_export *);
  68 extern int class_handle_ioctl(unsigned int cmd, unsigned long arg);
  69
  70 struct lu_device_type;
  71
  72 /* genops.c */
  73 struct obd_export *class_conn2export(struct lustre_handle *);
  74 int class_register_type(struct obd_ops *, struct md_ops *,
  75                         struct lprocfs_vars *, const char *nm,
  76                         struct lu_device_type *ldt);
  77 int class_unregister_type(const char *nm);
  78
  79 struct obd_device *class_newdev(const char *type_name, const char *name);
  80 void class_release_dev(struct obd_device *obd);
  81
  82 int class_name2dev(const char *name);
  83 struct obd_device *class_name2obd(const char *name);
  84 int class_uuid2dev(struct obd_uuid *uuid);
  85 struct obd_device *class_uuid2obd(struct obd_uuid *uuid);
  86 void class_obd_list(void);
  87 struct obd_device * class_find_client_obd(struct obd_uuid *tgt_uuid,
  88                                           const char * typ_name,
  89                                           struct obd_uuid *grp_uuid);
  90 struct obd_device * class_devices_in_group(struct obd_uuid *grp_uuid,
  91                                            int *next);
  92 struct obd_device * class_num2obd(int num);
  93
  94 int class_notify_sptlrpc_conf(const char *fsname, int namelen);
  95
  96 char *obd_export_nid2str(struct obd_export *exp);
  97
  98 int obd_export_evict_by_nid(struct obd_device *obd, const char *nid);
  99 int obd_export_evict_by_uuid(struct obd_device *obd, const char *uuid);
 100
 101 int obd_zombie_impexp_init(void);
 102 void obd_zombie_impexp_stop(void);
 103 void obd_zombie_impexp_cull(void);
 104 void obd_zombie_barrier(void);
 105 void obd_exports_barrier(struct obd_device *obd);
 106 /* obd_config.c */
 107 int class_process_config(struct lustre_cfg *lcfg);
 108 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
 109                              struct lustre_cfg *lcfg, void *data);
 110 int class_attach(struct lustre_cfg *lcfg);
 111 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
 112 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg);
 113 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg);
 114 struct obd_device *class_incref(struct obd_device *obd,
 115                                 const char *scope, const void *source);
 116 void class_decref(struct obd_device *obd,
 117                   const char *scope, const void *source);
 118 void dump_exports(struct obd_device *obd, int locks);
 119
 120 /*obdecho*/
 121 #ifdef LPROCFS
 122 extern void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars);
 123 #else
 124 static inline void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars)
 125 {
 126         memset(lvars, 0, sizeof(*lvars));
 127 }
 128 #endif
 129
 130 #define CFG_F_START     0x01   /* Set when we start updating from a log */
 131 #define CFG_F_MARKER    0x02   /* We are within a maker */
 132 #define CFG_F_SKIP      0x04   /* We should ignore this cfg command */
 133 #define CFG_F_COMPAT146 0x08   /* Allow old-style logs */
 134 #define CFG_F_EXCLUDE   0x10   /* OST exclusion list */
 135
 136 /* Passed as data param to class_config_parse_llog */
 137 struct config_llog_instance {
 138         char *              cfg_instance;
 139         char *              cfg_obdname;
 140         struct super_block *cfg_sb;
 141         struct obd_uuid     cfg_uuid;
 142         int                 cfg_last_idx; /* for partial llog processing */
 143         int                 cfg_flags;
 144 };
 145 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
 146                             struct config_llog_instance *cfg);
 147 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
 148                            struct config_llog_instance *cfg);
 149
 150 /* list of active configuration logs  */
 151 struct config_llog_data {
 152         char                       *cld_logname;
 153         struct ldlm_res_id          cld_resid;
 154         struct config_llog_instance cld_cfg;
 155         cfs_list_t                  cld_list_chain;
 156         cfs_atomic_t                cld_refcount;
 157         struct config_llog_data    *cld_sptlrpc;/* depended sptlrpc log */
 158         struct obd_export          *cld_mgcexp;
 159         unsigned int                cld_stopping:1, /* we were told to stop
 160                                                      * watching */
 161                                     cld_lostlock:1, /* lock not requeued */
 162                                     cld_is_sptlrpc:1;
 163 };
 164
 165 struct lustre_profile {
 166         cfs_list_t       lp_list;
 167         char            *lp_profile;
 168         char            *lp_dt;
 169         char            *lp_md;
 170 };
 171
 172 struct lustre_profile *class_get_profile(const char * prof);
 173 void class_del_profile(const char *prof);
 174 void class_del_profiles(void);
 175
 176 #if LUSTRE_TRACKS_LOCK_EXP_REFS
 177
 178 void __class_export_add_lock_ref(struct obd_export *, struct ldlm_lock *);
 179 void __class_export_del_lock_ref(struct obd_export *, struct ldlm_lock *);
 180 extern void (*class_export_dump_hook)(struct obd_export *);
 181
 182 #else
 183
 184 #define __class_export_add_lock_ref(exp, lock)             do {} while(0)
 185 #define __class_export_del_lock_ref(exp, lock)             do {} while(0)
 186
 187 #endif
 188
 189 #define class_export_rpc_get(exp)                                       \
 190 ({                                                                      \
 191         cfs_atomic_inc(&(exp)->exp_rpc_count);                          \
 192         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",    \
 193                (exp), cfs_atomic_read(&(exp)->exp_rpc_count));          \
 194         class_export_get(exp);                                          \
 195 })
 196
 197 #define class_export_rpc_put(exp)                                       \
 198 ({                                                                      \
 199         LASSERT(cfs_atomic_read(&exp->exp_rpc_count) > 0);              \
 200         cfs_atomic_dec(&(exp)->exp_rpc_count);                          \
 201         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",    \
 202                (exp), cfs_atomic_read(&(exp)->exp_rpc_count));          \
 203         class_export_put(exp);                                          \
 204 })
 205
 206 #define class_export_lock_get(exp, lock)                                \
 207 ({                                                                      \
 208         cfs_atomic_inc(&(exp)->exp_locks_count);                        \
 209         __class_export_add_lock_ref(exp, lock);                         \
 210         CDEBUG(D_INFO, "lock GETting export %p : new locks_count %d\n", \
 211                (exp), cfs_atomic_read(&(exp)->exp_locks_count));        \
 212         class_export_get(exp);                                          \
 213 })
 214
 215 #define class_export_lock_put(exp, lock)                                \
 216 ({                                                                      \
 217         LASSERT(cfs_atomic_read(&exp->exp_locks_count) > 0);            \
 218         cfs_atomic_dec(&(exp)->exp_locks_count);                        \
 219         __class_export_del_lock_ref(exp, lock);                         \
 220         CDEBUG(D_INFO, "lock PUTting export %p : new locks_count %d\n", \
 221                (exp), cfs_atomic_read(&(exp)->exp_locks_count));        \
 222         class_export_put(exp);                                          \
 223 })
 224
 225 #define class_export_cb_get(exp)                                        \
 226 ({                                                                      \
 227         cfs_atomic_inc(&(exp)->exp_cb_count);                           \
 228         CDEBUG(D_INFO, "callback GETting export %p : new cb_count %d\n",\
 229                (exp), cfs_atomic_read(&(exp)->exp_cb_count));           \
 230         class_export_get(exp);                                          \
 231 })
 232
 233 #define class_export_cb_put(exp)                                        \
 234 ({                                                                      \
 235         LASSERT(cfs_atomic_read(&exp->exp_cb_count) > 0);               \
 236         cfs_atomic_dec(&(exp)->exp_cb_count);                           \
 237         CDEBUG(D_INFO, "callback PUTting export %p : new cb_count %d\n",\
 238                (exp), cfs_atomic_read(&(exp)->exp_cb_count));           \
 239         class_export_put(exp);                                          \
 240 })
 241
 242 /* genops.c */
 243 struct obd_export *class_export_get(struct obd_export *exp);
 244 void class_export_put(struct obd_export *exp);
 245 struct obd_export *class_new_export(struct obd_device *obddev,
 246                                     struct obd_uuid *cluuid);
 247 void class_unlink_export(struct obd_export *exp);
 248
 249 struct obd_import *class_import_get(struct obd_import *);
 250 void class_import_put(struct obd_import *);
 251 struct obd_import *class_new_import(struct obd_device *obd);
 252 void class_destroy_import(struct obd_import *exp);
 253
 254 struct obd_type *class_search_type(const char *name);
 255 struct obd_type *class_get_type(const char *name);
 256 void class_put_type(struct obd_type *type);
 257 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 258                   struct obd_uuid *cluuid);
 259 int class_disconnect(struct obd_export *exp);
 260 void class_fail_export(struct obd_export *exp);
 261 int class_connected_export(struct obd_export *exp);
 262 void class_disconnect_exports(struct obd_device *obddev);
 263 int class_manual_cleanup(struct obd_device *obd);
 264 void class_disconnect_stale_exports(struct obd_device *,
 265                                     int (*test_export)(struct obd_export *));
 266 static inline enum obd_option exp_flags_from_obd(struct obd_device *obd)
 267 {
 268         return ((obd->obd_fail ? OBD_OPT_FAILOVER : 0) |
 269                 (obd->obd_force ? OBD_OPT_FORCE : 0) |
 270                 (obd->obd_abort_recovery ? OBD_OPT_ABORT_RECOV : 0) |
 271                 0);
 272 }
 273
 274 static inline struct lu_target *class_exp2tgt(struct obd_export *exp)
 275 {
 276         LASSERT(exp->exp_obd);
 277         return exp->exp_obd->u.obt.obt_lut;
 278 }
 279
 280 static inline struct lr_server_data *class_server_data(struct obd_device *obd)
 281 {
 282         LASSERT(obd->u.obt.obt_lut);
 283         return &obd->u.obt.obt_lut->lut_lsd;
 284 }
 285
 286 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_flag valid);
 287 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
 288 void obdo_from_iattr(struct obdo *oa, struct iattr *attr,
 289                      unsigned int ia_valid);
 290 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, obd_flag valid);
 291 void md_from_obdo(struct md_op_data *op_data, struct obdo *oa, obd_flag valid);
 292 void obdo_from_md(struct obdo *oa, struct md_op_data *op_data,
 293                   unsigned int valid);
 294
 295 #define OBT(dev)        (dev)->obd_type
 296 #define OBP(dev, op)    (dev)->obd_type->typ_dt_ops->o_ ## op
 297 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
 298 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 299
 300 /* Ensure obd_setup: used for cleanup which must be called
 301    while obd is stopping */
 302 #define OBD_CHECK_DEV(obd)                                      \
 303 do {                                                            \
 304         if (!(obd)) {                                           \
 305                 CERROR("NULL device\n");                        \
 306                 RETURN(-ENODEV);                                \
 307         }                                                       \
 308 } while (0)
 309
 310 /* ensure obd_setup and !obd_stopping */
 311 #define OBD_CHECK_DEV_ACTIVE(obd)                               \
 312 do {                                                            \
 313         OBD_CHECK_DEV(obd);                                     \
 314         if (!(obd)->obd_set_up || (obd)->obd_stopping) {        \
 315                 CERROR("Device %d not setup\n",                 \
 316                        (obd)->obd_minor);                       \
 317                 RETURN(-ENODEV);                                \
 318         }                                                       \
 319 } while (0)
 320
 321
 322 #ifdef LPROCFS
 323 #define OBD_COUNTER_OFFSET(op)                                  \
 324         ((offsetof(struct obd_ops, o_ ## op) -                  \
 325           offsetof(struct obd_ops, o_iocontrol))                \
 326          / sizeof(((struct obd_ops *)(0))->o_iocontrol))
 327
 328 #define OBD_COUNTER_INCREMENT(obdx, op)                           \
 329         if ((obdx)->obd_stats != NULL) {                          \
 330                 unsigned int coffset;                             \
 331                 coffset = (unsigned int)((obdx)->obd_cntr_base) + \
 332                         OBD_COUNTER_OFFSET(op);                   \
 333                 LASSERT(coffset < (obdx)->obd_stats->ls_num);     \
 334                 lprocfs_counter_incr((obdx)->obd_stats, coffset); \
 335         }
 336
 337 #define EXP_COUNTER_INCREMENT(export, op)                                    \
 338         if ((export)->exp_obd->obd_stats != NULL) {                          \
 339                 unsigned int coffset;                                        \
 340                 coffset = (unsigned int)((export)->exp_obd->obd_cntr_base) + \
 341                         OBD_COUNTER_OFFSET(op);                              \
 342                 LASSERT(coffset < (export)->exp_obd->obd_stats->ls_num);     \
 343                 lprocfs_counter_incr((export)->exp_obd->obd_stats, coffset); \
 344                 if ((export)->exp_nid_stats != NULL &&                       \
 345                     (export)->exp_nid_stats->nid_stats != NULL)              \
 346                         lprocfs_counter_incr(                                \
 347                                 (export)->exp_nid_stats->nid_stats, coffset);\
 348         }
 349
 350 #define MD_COUNTER_OFFSET(op)                                   \
 351         ((offsetof(struct md_ops, m_ ## op) -                   \
 352           offsetof(struct md_ops, m_getstatus))                 \
 353          / sizeof(((struct md_ops *)(0))->m_getstatus))
 354
 355 #define MD_COUNTER_INCREMENT(obdx, op)                           \
 356         if ((obd)->md_stats != NULL) {                           \
 357                 unsigned int coffset;                            \
 358                 coffset = (unsigned int)((obdx)->md_cntr_base) + \
 359                         MD_COUNTER_OFFSET(op);                   \
 360                 LASSERT(coffset < (obdx)->md_stats->ls_num);     \
 361                 lprocfs_counter_incr((obdx)->md_stats, coffset); \
 362         }
 363
 364 #define EXP_MD_COUNTER_INCREMENT(export, op)                                 \
 365         if ((export)->exp_obd->obd_stats != NULL) {                          \
 366                 unsigned int coffset;                                        \
 367                 coffset = (unsigned int)((export)->exp_obd->md_cntr_base) +  \
 368                         MD_COUNTER_OFFSET(op);                               \
 369                 LASSERT(coffset < (export)->exp_obd->md_stats->ls_num);      \
 370                 lprocfs_counter_incr((export)->exp_obd->md_stats, coffset);  \
 371                 if ((export)->exp_md_stats != NULL)                          \
 372                         lprocfs_counter_incr(                                \
 373                                 (export)->exp_md_stats, coffset);            \
 374         }
 375
 376 #else
 377 #define OBD_COUNTER_OFFSET(op)
 378 #define OBD_COUNTER_INCREMENT(obd, op)
 379 #define EXP_COUNTER_INCREMENT(exp, op)
 380 #define MD_COUNTER_INCREMENT(obd, op)
 381 #define EXP_MD_COUNTER_INCREMENT(exp, op)
 382 #endif
 383
 384 static inline int lprocfs_nid_ldlm_stats_init(struct nid_stat* tmp) {
 385         /* Always add in ldlm_stats */
 386         tmp->nid_ldlm_stats = lprocfs_alloc_stats(LDLM_LAST_OPC - LDLM_FIRST_OPC
 387                                                   ,LPROCFS_STATS_FLAG_NOPERCPU);
 388         if (tmp->nid_ldlm_stats == NULL)
 389                 return -ENOMEM;
 390
 391         lprocfs_init_ldlm_stats(tmp->nid_ldlm_stats);
 392
 393         return lprocfs_register_stats(tmp->nid_proc, "ldlm_stats",
 394                                       tmp->nid_ldlm_stats);
 395 }
 396
 397 #define OBD_CHECK_MD_OP(obd, op, err)                           \
 398 do {                                                            \
 399         if (!OBT(obd) || !MDP((obd), op)) {                     \
 400                 if (err)                                        \
 401                         CERROR("md_" #op ": dev %s/%d no operation\n", \
 402                                obd->obd_name, obd->obd_minor);  \
 403                 RETURN(err);                                    \
 404         }                                                       \
 405 } while (0)
 406
 407 #define EXP_CHECK_MD_OP(exp, op)                                \
 408 do {                                                            \
 409         if ((exp) == NULL) {                                    \
 410                 CERROR("obd_" #op ": NULL export\n");           \
 411                 RETURN(-ENODEV);                                \
 412         }                                                       \
 413         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 414                 CERROR("obd_" #op ": cleaned up obd\n");        \
 415                 RETURN(-EOPNOTSUPP);                            \
 416         }                                                       \
 417         if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
 418                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 419                        (exp)->exp_obd->obd_name,                \
 420                        (exp)->exp_obd->obd_minor);              \
 421                 RETURN(-EOPNOTSUPP);                            \
 422         }                                                       \
 423 } while (0)
 424
 425
 426 #define OBD_CHECK_DT_OP(obd, op, err)                           \
 427 do {                                                            \
 428         if (!OBT(obd) || !OBP((obd), op)) {                     \
 429                 if (err)                                        \
 430                         CERROR("obd_" #op ": dev %d no operation\n",    \
 431                                obd->obd_minor);                 \
 432                 RETURN(err);                                    \
 433         }                                                       \
 434 } while (0)
 435
 436 #define EXP_CHECK_DT_OP(exp, op)                                \
 437 do {                                                            \
 438         if ((exp) == NULL) {                                    \
 439                 CERROR("obd_" #op ": NULL export\n");           \
 440                 RETURN(-ENODEV);                                \
 441         }                                                       \
 442         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 443                 CERROR("obd_" #op ": cleaned up obd\n");        \
 444                 RETURN(-EOPNOTSUPP);                            \
 445         }                                                       \
 446         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 447                 CERROR("obd_" #op ": dev %d no operation\n",    \
 448                        (exp)->exp_obd->obd_minor);              \
 449                 RETURN(-EOPNOTSUPP);                            \
 450         }                                                       \
 451 } while (0)
 452
 453 #define CTXT_CHECK_OP(ctxt, op, err)                                 \
 454 do {                                                                 \
 455         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {             \
 456                 if (err)                                             \
 457                         CERROR("lop_" #op ": dev %d no operation\n", \
 458                                ctxt->loc_obd->obd_minor);            \
 459                 RETURN(err);                                         \
 460         }                                                            \
 461 } while (0)
 462
 463 static inline int class_devno_max(void)
 464 {
 465         return MAX_OBD_DEVICES;
 466 }
 467
 468 static inline int obd_get_info(struct obd_export *exp, __u32 keylen,
 469                                void *key, __u32 *vallen, void *val,
 470                                struct lov_stripe_md *lsm)
 471 {
 472         int rc;
 473         ENTRY;
 474
 475         EXP_CHECK_DT_OP(exp, get_info);
 476         EXP_COUNTER_INCREMENT(exp, get_info);
 477
 478         rc = OBP(exp->exp_obd, get_info)(exp, keylen, key, vallen, val, lsm);
 479         RETURN(rc);
 480 }
 481
 482 static inline int obd_set_info_async(struct obd_export *exp, obd_count keylen,
 483                                      void *key, obd_count vallen, void *val,
 484                                      struct ptlrpc_request_set *set)
 485 {
 486         int rc;
 487         ENTRY;
 488
 489         EXP_CHECK_DT_OP(exp, set_info_async);
 490         EXP_COUNTER_INCREMENT(exp, set_info_async);
 491
 492         rc = OBP(exp->exp_obd, set_info_async)(exp, keylen, key, vallen, val,
 493                                                set);
 494         RETURN(rc);
 495 }
 496
 497 /*
 498  * obd-lu integration.
 499  *
 500  * Functionality is being moved into new lu_device-based layering, but some
 501  * pieces of configuration process are still based on obd devices.
 502  *
 503  * Specifically, lu_device_type_operations::ldto_device_alloc() methods fully
 504  * subsume ->o_setup() methods of obd devices they replace. The same for
 505  * lu_device_operations::ldo_process_config() and ->o_process_config(). As a
 506  * result, obd_setup() and obd_process_config() branch and call one XOR
 507  * another.
 508  *
 509  * Yet neither lu_device_type_operations::ldto_device_fini() nor
 510  * lu_device_type_operations::ldto_device_free() fully implement the
 511  * functionality of ->o_precleanup() and ->o_cleanup() they override. Hence,
 512  * obd_precleanup() and obd_cleanup() call both lu_device and obd operations.
 513  */
 514
 515 #define DECLARE_LU_VARS(ldt, d)                 \
 516         struct lu_device_type *ldt;       \
 517         struct lu_device *d
 518
 519 static inline int obd_setup(struct obd_device *obd, struct lustre_cfg *cfg)
 520 {
 521         int rc;
 522         DECLARE_LU_VARS(ldt, d);
 523         ENTRY;
 524
 525         ldt = obd->obd_type->typ_lu;
 526         if (ldt != NULL) {
 527                 struct lu_context  session_ctx;
 528                 struct lu_env env;
 529                 lu_context_init(&session_ctx, LCT_SESSION);
 530                 session_ctx.lc_thread = NULL;
 531                 lu_context_enter(&session_ctx);
 532
 533                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 534                 if (rc == 0) {
 535                         env.le_ses = &session_ctx;
 536                         d = ldt->ldt_ops->ldto_device_alloc(&env, ldt, cfg);
 537                         lu_env_fini(&env);
 538                         if (!IS_ERR(d)) {
 539                                 obd->obd_lu_dev = d;
 540                                 d->ld_obd = obd;
 541                                 rc = 0;
 542                         } else
 543                                 rc = PTR_ERR(d);
 544                 }
 545                 lu_context_exit(&session_ctx);
 546                 lu_context_fini(&session_ctx);
 547
 548         } else {
 549                 OBD_CHECK_DT_OP(obd, setup, -EOPNOTSUPP);
 550                 OBD_COUNTER_INCREMENT(obd, setup);
 551                 rc = OBP(obd, setup)(obd, cfg);
 552         }
 553         RETURN(rc);
 554 }
 555
 556 static inline int obd_precleanup(struct obd_device *obd,
 557                                  enum obd_cleanup_stage cleanup_stage)
 558 {
 559         int rc;
 560         DECLARE_LU_VARS(ldt, d);
 561         ENTRY;
 562
 563         OBD_CHECK_DEV(obd);
 564         ldt = obd->obd_type->typ_lu;
 565         d = obd->obd_lu_dev;
 566         if (ldt != NULL && d != NULL) {
 567                 if (cleanup_stage == OBD_CLEANUP_EXPORTS) {
 568                         struct lu_env env;
 569
 570                         rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 571                         if (rc == 0) {
 572                                 ldt->ldt_ops->ldto_device_fini(&env, d);
 573                                 lu_env_fini(&env);
 574                         }
 575                 }
 576         }
 577         OBD_CHECK_DT_OP(obd, precleanup, 0);
 578         OBD_COUNTER_INCREMENT(obd, precleanup);
 579
 580         rc = OBP(obd, precleanup)(obd, cleanup_stage);
 581         RETURN(rc);
 582 }
 583
 584 static inline int obd_cleanup(struct obd_device *obd)
 585 {
 586         int rc;
 587         DECLARE_LU_VARS(ldt, d);
 588         ENTRY;
 589
 590         OBD_CHECK_DEV(obd);
 591
 592         ldt = obd->obd_type->typ_lu;
 593         d = obd->obd_lu_dev;
 594         if (ldt != NULL && d != NULL) {
 595                 struct lu_env env;
 596
 597                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 598                 if (rc == 0) {
 599                         ldt->ldt_ops->ldto_device_free(&env, d);
 600                         lu_env_fini(&env);
 601                         obd->obd_lu_dev = NULL;
 602                 }
 603         }
 604         OBD_CHECK_DT_OP(obd, cleanup, 0);
 605         OBD_COUNTER_INCREMENT(obd, cleanup);
 606
 607         rc = OBP(obd, cleanup)(obd);
 608         RETURN(rc);
 609 }
 610
 611 static inline int
 612 obd_process_config(struct obd_device *obd, int datalen, void *data)
 613 {
 614         int rc;
 615         DECLARE_LU_VARS(ldt, d);
 616         ENTRY;
 617
 618         OBD_CHECK_DEV(obd);
 619
 620         obd->obd_process_conf = 1;
 621         ldt = obd->obd_type->typ_lu;
 622         d = obd->obd_lu_dev;
 623         if (ldt != NULL && d != NULL) {
 624                 struct lu_env env;
 625
 626                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 627                 if (rc == 0) {
 628                         rc = d->ld_ops->ldo_process_config(&env, d, data);
 629                         lu_env_fini(&env);
 630                 }
 631         } else {
 632                 OBD_CHECK_DT_OP(obd, process_config, -EOPNOTSUPP);
 633                 rc = OBP(obd, process_config)(obd, datalen, data);
 634         }
 635         OBD_COUNTER_INCREMENT(obd, process_config);
 636         obd->obd_process_conf = 0;
 637
 638         RETURN(rc);
 639 }
 640
 641 /* Pack an in-memory MD struct for storage on disk.
 642  * Returns +ve size of packed MD (0 for free), or -ve error.
 643  *
 644  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 645  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 646  * If @*disk_tgt == NULL, it will be allocated
 647  */
 648 static inline int obd_packmd(struct obd_export *exp,
 649                              struct lov_mds_md **disk_tgt,
 650                              struct lov_stripe_md *mem_src)
 651 {
 652         int rc;
 653         ENTRY;
 654
 655         EXP_CHECK_DT_OP(exp, packmd);
 656         EXP_COUNTER_INCREMENT(exp, packmd);
 657
 658         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 659         RETURN(rc);
 660 }
 661
 662 static inline int obd_size_diskmd(struct obd_export *exp,
 663                                   struct lov_stripe_md *mem_src)
 664 {
 665         return obd_packmd(exp, NULL, mem_src);
 666 }
 667
 668 /* helper functions */
 669 static inline int obd_alloc_diskmd(struct obd_export *exp,
 670                                    struct lov_mds_md **disk_tgt)
 671 {
 672         LASSERT(disk_tgt);
 673         LASSERT(*disk_tgt == NULL);
 674         return obd_packmd(exp, disk_tgt, NULL);
 675 }
 676
 677 static inline int obd_free_diskmd(struct obd_export *exp,
 678                                   struct lov_mds_md **disk_tgt)
 679 {
 680         LASSERT(disk_tgt);
 681         LASSERT(*disk_tgt);
 682         return obd_packmd(exp, disk_tgt, NULL);
 683 }
 684
 685 /* Unpack an MD struct from disk to in-memory format.
 686  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 687  *
 688  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 689  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 690  * If @*mem_tgt == NULL, it will be allocated
 691  */
 692 static inline int obd_unpackmd(struct obd_export *exp,
 693                                struct lov_stripe_md **mem_tgt,
 694                                struct lov_mds_md *disk_src,
 695                                int disk_len)
 696 {
 697         int rc;
 698         ENTRY;
 699
 700         EXP_CHECK_DT_OP(exp, unpackmd);
 701         EXP_COUNTER_INCREMENT(exp, unpackmd);
 702
 703         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 704         RETURN(rc);
 705 }
 706
 707 /* helper functions */
 708 static inline int obd_alloc_memmd(struct obd_export *exp,
 709                                   struct lov_stripe_md **mem_tgt)
 710 {
 711         LASSERT(mem_tgt);
 712         LASSERT(*mem_tgt == NULL);
 713         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 714 }
 715
 716 static inline int obd_free_memmd(struct obd_export *exp,
 717                                  struct lov_stripe_md **mem_tgt)
 718 {
 719         int rc;
 720
 721         LASSERT(mem_tgt);
 722         LASSERT(*mem_tgt);
 723         rc = obd_unpackmd(exp, mem_tgt, NULL, 0);
 724         *mem_tgt = NULL;
 725         return rc;
 726 }
 727
 728 static inline int obd_precreate(struct obd_export *exp)
 729 {
 730         int rc;
 731         ENTRY;
 732
 733         EXP_CHECK_DT_OP(exp, precreate);
 734         OBD_COUNTER_INCREMENT(exp->exp_obd, precreate);
 735
 736         rc = OBP(exp->exp_obd, precreate)(exp);
 737         RETURN(rc);
 738 }
 739
 740 static inline int obd_create_async(struct obd_export *exp,
 741                                    struct obd_info *oinfo,
 742                                    struct lov_stripe_md **ea,
 743                                    struct obd_trans_info *oti)
 744 {
 745         int rc;
 746         ENTRY;
 747
 748         EXP_CHECK_DT_OP(exp, create_async);
 749         EXP_COUNTER_INCREMENT(exp, create_async);
 750
 751         rc = OBP(exp->exp_obd, create_async)(exp, oinfo, ea, oti);
 752         RETURN(rc);
 753 }
 754
 755 static inline int obd_create(struct obd_export *exp, struct obdo *obdo,
 756                              struct lov_stripe_md **ea,
 757                              struct obd_trans_info *oti)
 758 {
 759         int rc;
 760         ENTRY;
 761
 762         EXP_CHECK_DT_OP(exp, create);
 763         EXP_COUNTER_INCREMENT(exp, create);
 764
 765         rc = OBP(exp->exp_obd, create)(exp, obdo, ea, oti);
 766         RETURN(rc);
 767 }
 768
 769 static inline int obd_destroy(struct obd_export *exp, struct obdo *obdo,
 770                               struct lov_stripe_md *ea,
 771                               struct obd_trans_info *oti,
 772                               struct obd_export *md_exp, void *capa)
 773 {
 774         int rc;
 775         ENTRY;
 776
 777         EXP_CHECK_DT_OP(exp, destroy);
 778         EXP_COUNTER_INCREMENT(exp, destroy);
 779
 780         rc = OBP(exp->exp_obd, destroy)(exp, obdo, ea, oti, md_exp, capa);
 781         RETURN(rc);
 782 }
 783
 784 static inline int obd_getattr(struct obd_export *exp, struct obd_info *oinfo)
 785 {
 786         int rc;
 787         ENTRY;
 788
 789         EXP_CHECK_DT_OP(exp, getattr);
 790         EXP_COUNTER_INCREMENT(exp, getattr);
 791
 792         rc = OBP(exp->exp_obd, getattr)(exp, oinfo);
 793         RETURN(rc);
 794 }
 795
 796 static inline int obd_getattr_async(struct obd_export *exp,
 797                                     struct obd_info *oinfo,
 798                                     struct ptlrpc_request_set *set)
 799 {
 800         int rc;
 801         ENTRY;
 802
 803         EXP_CHECK_DT_OP(exp, getattr_async);
 804         EXP_COUNTER_INCREMENT(exp, getattr_async);
 805
 806         rc = OBP(exp->exp_obd, getattr_async)(exp, oinfo, set);
 807         RETURN(rc);
 808 }
 809
 810 static inline int obd_setattr(struct obd_export *exp, struct obd_info *oinfo,
 811                               struct obd_trans_info *oti)
 812 {
 813         int rc;
 814         ENTRY;
 815
 816         EXP_CHECK_DT_OP(exp, setattr);
 817         EXP_COUNTER_INCREMENT(exp, setattr);
 818
 819         rc = OBP(exp->exp_obd, setattr)(exp, oinfo, oti);
 820         RETURN(rc);
 821 }
 822
 823 /* This performs all the requests set init/wait/destroy actions. */
 824 static inline int obd_setattr_rqset(struct obd_export *exp,
 825                                     struct obd_info *oinfo,
 826                                     struct obd_trans_info *oti)
 827 {
 828         struct ptlrpc_request_set *set = NULL;
 829         int rc;
 830         ENTRY;
 831
 832         EXP_CHECK_DT_OP(exp, setattr_async);
 833         EXP_COUNTER_INCREMENT(exp, setattr_async);
 834
 835         set =  ptlrpc_prep_set();
 836         if (set == NULL)
 837                 RETURN(-ENOMEM);
 838
 839         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 840         if (rc == 0)
 841                 rc = ptlrpc_set_wait(set);
 842         ptlrpc_set_destroy(set);
 843         RETURN(rc);
 844 }
 845
 846 /* This adds all the requests into @set if @set != NULL, otherwise
 847    all requests are sent asynchronously without waiting for response. */
 848 static inline int obd_setattr_async(struct obd_export *exp,
 849                                     struct obd_info *oinfo,
 850                                     struct obd_trans_info *oti,
 851                                     struct ptlrpc_request_set *set)
 852 {
 853         int rc;
 854         ENTRY;
 855
 856         EXP_CHECK_DT_OP(exp, setattr_async);
 857         EXP_COUNTER_INCREMENT(exp, setattr_async);
 858
 859         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 860         RETURN(rc);
 861 }
 862
 863 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 864                                int priority)
 865 {
 866         struct obd_device *obd = imp->imp_obd;
 867         int rc;
 868         ENTRY;
 869
 870         OBD_CHECK_DEV_ACTIVE(obd);
 871         OBD_CHECK_DT_OP(obd, add_conn, -EOPNOTSUPP);
 872         OBD_COUNTER_INCREMENT(obd, add_conn);
 873
 874         rc = OBP(obd, add_conn)(imp, uuid, priority);
 875         RETURN(rc);
 876 }
 877
 878 static inline int obd_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
 879 {
 880         struct obd_device *obd = imp->imp_obd;
 881         int rc;
 882         ENTRY;
 883
 884         OBD_CHECK_DEV_ACTIVE(obd);
 885         OBD_CHECK_DT_OP(obd, del_conn, -EOPNOTSUPP);
 886         OBD_COUNTER_INCREMENT(obd, del_conn);
 887
 888         rc = OBP(obd, del_conn)(imp, uuid);
 889         RETURN(rc);
 890 }
 891
 892 static inline struct obd_uuid *obd_get_uuid(struct obd_export *exp)
 893 {
 894         struct obd_uuid *uuid;
 895         ENTRY;
 896
 897         OBD_CHECK_DT_OP(exp->exp_obd, get_uuid, NULL);
 898         EXP_COUNTER_INCREMENT(exp, get_uuid);
 899
 900         uuid = OBP(exp->exp_obd, get_uuid)(exp);
 901         RETURN(uuid);
 902 }
 903
 904 static inline int obd_connect(const struct lu_env *env,
 905                               struct obd_export **exp,struct obd_device *obd,
 906                               struct obd_uuid *cluuid,
 907                               struct obd_connect_data *d,
 908                               void *localdata)
 909 {
 910         int rc;
 911         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 912                                                    * check */
 913         ENTRY;
 914
 915         OBD_CHECK_DEV_ACTIVE(obd);
 916         OBD_CHECK_DT_OP(obd, connect, -EOPNOTSUPP);
 917         OBD_COUNTER_INCREMENT(obd, connect);
 918
 919         rc = OBP(obd, connect)(env, exp, obd, cluuid, d, localdata);
 920         /* check that only subset is granted */
 921         LASSERT(ergo(d != NULL,
 922                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 923         RETURN(rc);
 924 }
 925
 926 static inline int obd_reconnect(const struct lu_env *env,
 927                                 struct obd_export *exp,
 928                                 struct obd_device *obd,
 929                                 struct obd_uuid *cluuid,
 930                                 struct obd_connect_data *d,
 931                                 void *localdata)
 932 {
 933         int rc;
 934         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 935                                                    * check */
 936
 937         ENTRY;
 938
 939         OBD_CHECK_DEV_ACTIVE(obd);
 940         OBD_CHECK_DT_OP(obd, reconnect, 0);
 941         OBD_COUNTER_INCREMENT(obd, reconnect);
 942
 943         rc = OBP(obd, reconnect)(env, exp, obd, cluuid, d, localdata);
 944         /* check that only subset is granted */
 945         LASSERT(ergo(d != NULL,
 946                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 947         RETURN(rc);
 948 }
 949
 950 static inline int obd_disconnect(struct obd_export *exp)
 951 {
 952         int rc;
 953         ENTRY;
 954
 955         EXP_CHECK_DT_OP(exp, disconnect);
 956         EXP_COUNTER_INCREMENT(exp, disconnect);
 957
 958         rc = OBP(exp->exp_obd, disconnect)(exp);
 959         RETURN(rc);
 960 }
 961
 962 static inline int obd_fid_init(struct obd_export *exp)
 963 {
 964         int rc;
 965         ENTRY;
 966
 967         OBD_CHECK_DT_OP(exp->exp_obd, fid_init, 0);
 968         EXP_COUNTER_INCREMENT(exp, fid_init);
 969
 970         rc = OBP(exp->exp_obd, fid_init)(exp);
 971         RETURN(rc);
 972 }
 973
 974 static inline int obd_fid_fini(struct obd_export *exp)
 975 {
 976         int rc;
 977         ENTRY;
 978
 979         OBD_CHECK_DT_OP(exp->exp_obd, fid_fini, 0);
 980         EXP_COUNTER_INCREMENT(exp, fid_fini);
 981
 982         rc = OBP(exp->exp_obd, fid_fini)(exp);
 983         RETURN(rc);
 984 }
 985
 986 static inline int obd_fid_alloc(struct obd_export *exp,
 987                                 struct lu_fid *fid,
 988                                 struct md_op_data *op_data)
 989 {
 990         int rc;
 991         ENTRY;
 992
 993         EXP_CHECK_DT_OP(exp, fid_alloc);
 994         EXP_COUNTER_INCREMENT(exp, fid_alloc);
 995
 996         rc = OBP(exp->exp_obd, fid_alloc)(exp, fid, op_data);
 997         RETURN(rc);
 998 }
 999
1000 static inline int obd_fid_delete(struct obd_export *exp,
1001                                  const struct lu_fid *fid)
1002 {
1003         int rc;
1004         ENTRY;
1005
1006         EXP_CHECK_DT_OP(exp, fid_delete);
1007         EXP_COUNTER_INCREMENT(exp, fid_delete);
1008
1009         rc = OBP(exp->exp_obd, fid_delete)(exp, fid);
1010         RETURN(rc);
1011 }
1012
1013 static inline int obd_ping(struct obd_export *exp)
1014 {
1015         int rc;
1016         ENTRY;
1017
1018         OBD_CHECK_DT_OP(exp->exp_obd, ping, 0);
1019         EXP_COUNTER_INCREMENT(exp, ping);
1020
1021         rc = OBP(exp->exp_obd, ping)(exp);
1022         RETURN(rc);
1023 }
1024
1025 static inline int obd_pool_new(struct obd_device *obd, char *poolname)
1026 {
1027         int rc;
1028         ENTRY;
1029
1030         OBD_CHECK_DT_OP(obd, pool_new, -EOPNOTSUPP);
1031         OBD_COUNTER_INCREMENT(obd, pool_new);
1032
1033         rc = OBP(obd, pool_new)(obd, poolname);
1034         RETURN(rc);
1035 }
1036
1037 static inline int obd_pool_del(struct obd_device *obd, char *poolname)
1038 {
1039         int rc;
1040         ENTRY;
1041
1042         OBD_CHECK_DT_OP(obd, pool_del, -EOPNOTSUPP);
1043         OBD_COUNTER_INCREMENT(obd, pool_del);
1044
1045         rc = OBP(obd, pool_del)(obd, poolname);
1046         RETURN(rc);
1047 }
1048
1049 static inline int obd_pool_add(struct obd_device *obd, char *poolname, char *ostname)
1050 {
1051         int rc;
1052         ENTRY;
1053
1054         OBD_CHECK_DT_OP(obd, pool_add, -EOPNOTSUPP);
1055         OBD_COUNTER_INCREMENT(obd, pool_add);
1056
1057         rc = OBP(obd, pool_add)(obd, poolname, ostname);
1058         RETURN(rc);
1059 }
1060
1061 static inline int obd_pool_rem(struct obd_device *obd, char *poolname, char *ostname)
1062 {
1063         int rc;
1064         ENTRY;
1065
1066         OBD_CHECK_DT_OP(obd, pool_rem, -EOPNOTSUPP);
1067         OBD_COUNTER_INCREMENT(obd, pool_rem);
1068
1069         rc = OBP(obd, pool_rem)(obd, poolname, ostname);
1070         RETURN(rc);
1071 }
1072
1073 static inline void obd_getref(struct obd_device *obd)
1074 {
1075         ENTRY;
1076         if (OBT(obd) && OBP(obd, getref)) {
1077                 OBD_COUNTER_INCREMENT(obd, getref);
1078                 OBP(obd, getref)(obd);
1079         }
1080         EXIT;
1081 }
1082
1083 static inline void obd_putref(struct obd_device *obd)
1084 {
1085         ENTRY;
1086         if (OBT(obd) && OBP(obd, putref)) {
1087                 OBD_COUNTER_INCREMENT(obd, putref);
1088                 OBP(obd, putref)(obd);
1089         }
1090         EXIT;
1091 }
1092
1093 static inline int obd_init_export(struct obd_export *exp)
1094 {
1095         int rc = 0;
1096
1097         ENTRY;
1098         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
1099             OBP((exp)->exp_obd, init_export))
1100                 rc = OBP(exp->exp_obd, init_export)(exp);
1101         RETURN(rc);
1102 }
1103
1104 static inline int obd_destroy_export(struct obd_export *exp)
1105 {
1106         ENTRY;
1107         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
1108             OBP((exp)->exp_obd, destroy_export))
1109                 OBP(exp->exp_obd, destroy_export)(exp);
1110         RETURN(0);
1111 }
1112
1113 static inline int obd_extent_calc(struct obd_export *exp,
1114                                   struct lov_stripe_md *md,
1115                                   int cmd, obd_off *offset)
1116 {
1117         int rc;
1118         ENTRY;
1119         EXP_CHECK_DT_OP(exp, extent_calc);
1120         rc = OBP(exp->exp_obd, extent_calc)(exp, md, cmd, offset);
1121         RETURN(rc);
1122 }
1123
1124 static inline struct dentry *
1125 obd_lvfs_fid2dentry(struct obd_export *exp, __u64 id_ino, __u32 gen, __u64 gr)
1126 {
1127         LASSERT(exp->exp_obd);
1128
1129         return lvfs_fid2dentry(&exp->exp_obd->obd_lvfs_ctxt, id_ino, gen, gr,
1130                                exp->exp_obd);
1131 }
1132
1133 static inline int
1134 obd_lvfs_open_llog(struct obd_export *exp, __u64 id_ino, struct dentry *dentry)
1135 {
1136         LASSERT(exp->exp_obd);
1137         CERROR("FIXME what's the story here?  This needs to be an obd fn?\n");
1138 #if 0
1139         return lvfs_open_llog(&exp->exp_obd->obd_lvfs_ctxt, id_ino,
1140                               dentry, exp->exp_obd);
1141 #endif
1142         return 0;
1143 }
1144
1145 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1146  * If the cache is older than @max_age we will get a new value from the
1147  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1148 static inline int obd_statfs_async(struct obd_device *obd,
1149                                    struct obd_info *oinfo,
1150                                    __u64 max_age,
1151                                    struct ptlrpc_request_set *rqset)
1152 {
1153         int rc = 0;
1154         ENTRY;
1155
1156         if (obd == NULL)
1157                 RETURN(-EINVAL);
1158
1159         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1160         OBD_COUNTER_INCREMENT(obd, statfs);
1161
1162         CDEBUG(D_SUPER, "%s: osfs %p age "LPU64", max_age "LPU64"\n",
1163                obd->obd_name, &obd->obd_osfs, obd->obd_osfs_age, max_age);
1164         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1165                 rc = OBP(obd, statfs_async)(obd, oinfo, max_age, rqset);
1166         } else {
1167                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1168                        " objects "LPU64"/"LPU64"\n",
1169                        obd->obd_name, &obd->obd_osfs,
1170                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1171                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1172                 cfs_spin_lock(&obd->obd_osfs_lock);
1173                 memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
1174                 cfs_spin_unlock(&obd->obd_osfs_lock);
1175                 oinfo->oi_flags |= OBD_STATFS_FROM_CACHE;
1176                 if (oinfo->oi_cb_up)
1177                         oinfo->oi_cb_up(oinfo, 0);
1178         }
1179         RETURN(rc);
1180 }
1181
1182 static inline int obd_statfs_rqset(struct obd_device *obd,
1183                                    struct obd_statfs *osfs, __u64 max_age,
1184                                    __u32 flags)
1185 {
1186         struct ptlrpc_request_set *set = NULL;
1187         struct obd_info oinfo = { { { 0 } } };
1188         int rc = 0;
1189         ENTRY;
1190
1191         set =  ptlrpc_prep_set();
1192         if (set == NULL)
1193                 RETURN(-ENOMEM);
1194
1195         oinfo.oi_osfs = osfs;
1196         oinfo.oi_flags = flags;
1197         rc = obd_statfs_async(obd, &oinfo, max_age, set);
1198         if (rc == 0)
1199                 rc = ptlrpc_set_wait(set);
1200         ptlrpc_set_destroy(set);
1201         RETURN(rc);
1202 }
1203
1204 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1205  * If the cache is older than @max_age we will get a new value from the
1206  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1207 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
1208                              __u64 max_age, __u32 flags)
1209 {
1210         int rc = 0;
1211         ENTRY;
1212
1213         if (obd == NULL)
1214                 RETURN(-EINVAL);
1215
1216         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1217         OBD_COUNTER_INCREMENT(obd, statfs);
1218
1219         CDEBUG(D_SUPER, "osfs "LPU64", max_age "LPU64"\n",
1220                obd->obd_osfs_age, max_age);
1221         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1222                 rc = OBP(obd, statfs)(obd, osfs, max_age, flags);
1223                 if (rc == 0) {
1224                         cfs_spin_lock(&obd->obd_osfs_lock);
1225                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
1226                         obd->obd_osfs_age = cfs_time_current_64();
1227                         cfs_spin_unlock(&obd->obd_osfs_lock);
1228                 }
1229         } else {
1230                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1231                        " objects "LPU64"/"LPU64"\n",
1232                        obd->obd_name, &obd->obd_osfs,
1233                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1234                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1235                 cfs_spin_lock(&obd->obd_osfs_lock);
1236                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
1237                 cfs_spin_unlock(&obd->obd_osfs_lock);
1238         }
1239         RETURN(rc);
1240 }
1241
1242 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
1243                            struct lov_stripe_md *ea, obd_size start,
1244                            obd_size end, void *capa)
1245 {
1246         int rc;
1247         ENTRY;
1248
1249         OBD_CHECK_DT_OP(exp->exp_obd, sync, -EOPNOTSUPP);
1250         EXP_COUNTER_INCREMENT(exp, sync);
1251
1252         rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end, capa);
1253         RETURN(rc);
1254 }
1255
1256 static inline int obd_punch_rqset(struct obd_export *exp,
1257                                   struct obd_info *oinfo,
1258                                   struct obd_trans_info *oti)
1259 {
1260         struct ptlrpc_request_set *set = NULL;
1261         int rc;
1262         ENTRY;
1263
1264         EXP_CHECK_DT_OP(exp, punch);
1265         EXP_COUNTER_INCREMENT(exp, punch);
1266
1267         set =  ptlrpc_prep_set();
1268         if (set == NULL)
1269                 RETURN(-ENOMEM);
1270
1271         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, set);
1272         if (rc == 0)
1273                 rc = ptlrpc_set_wait(set);
1274         ptlrpc_set_destroy(set);
1275         RETURN(rc);
1276 }
1277
1278 static inline int obd_punch(struct obd_export *exp, struct obd_info *oinfo,
1279                             struct obd_trans_info *oti,
1280                             struct ptlrpc_request_set *rqset)
1281 {
1282         int rc;
1283         ENTRY;
1284
1285         EXP_CHECK_DT_OP(exp, punch);
1286         EXP_COUNTER_INCREMENT(exp, punch);
1287
1288         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, rqset);
1289         RETURN(rc);
1290 }
1291
1292 static inline int obd_brw(int cmd, struct obd_export *exp,
1293                           struct obd_info *oinfo, obd_count oa_bufs,
1294                           struct brw_page *pg, struct obd_trans_info *oti)
1295 {
1296         int rc;
1297         ENTRY;
1298
1299         EXP_CHECK_DT_OP(exp, brw);
1300         EXP_COUNTER_INCREMENT(exp, brw);
1301
1302         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
1303                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
1304                        "or OBD_BRW_CHECK\n");
1305                 LBUG();
1306         }
1307
1308         rc = OBP(exp->exp_obd, brw)(cmd, exp, oinfo, oa_bufs, pg, oti);
1309         RETURN(rc);
1310 }
1311
1312 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
1313                              int objcount, struct obd_ioobj *obj,
1314                              struct niobuf_remote *remote, int *pages,
1315                              struct niobuf_local *local,
1316                              struct obd_trans_info *oti,
1317                              struct lustre_capa *capa)
1318 {
1319         int rc;
1320         ENTRY;
1321
1322         EXP_CHECK_DT_OP(exp, preprw);
1323         EXP_COUNTER_INCREMENT(exp, preprw);
1324
1325         rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, remote,
1326                                        pages, local, oti, capa);
1327         RETURN(rc);
1328 }
1329
1330 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
1331                                int objcount, struct obd_ioobj *obj,
1332                                struct niobuf_remote *rnb, int pages,
1333                                struct niobuf_local *local,
1334                                struct obd_trans_info *oti, int rc)
1335 {
1336         ENTRY;
1337
1338         EXP_CHECK_DT_OP(exp, commitrw);
1339         EXP_COUNTER_INCREMENT(exp, commitrw);
1340
1341         rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj,
1342                                          rnb, pages, local, oti, rc);
1343         RETURN(rc);
1344 }
1345
1346 static inline int obd_merge_lvb(struct obd_export *exp,
1347                                 struct lov_stripe_md *lsm,
1348                                 struct ost_lvb *lvb, int kms_only)
1349 {
1350         int rc;
1351         ENTRY;
1352
1353         EXP_CHECK_DT_OP(exp, merge_lvb);
1354         EXP_COUNTER_INCREMENT(exp, merge_lvb);
1355
1356         rc = OBP(exp->exp_obd, merge_lvb)(exp, lsm, lvb, kms_only);
1357         RETURN(rc);
1358 }
1359
1360 static inline int obd_adjust_kms(struct obd_export *exp,
1361                                  struct lov_stripe_md *lsm, obd_off size,
1362                                  int shrink)
1363 {
1364         int rc;
1365         ENTRY;
1366
1367         EXP_CHECK_DT_OP(exp, adjust_kms);
1368         EXP_COUNTER_INCREMENT(exp, adjust_kms);
1369
1370         rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
1371         RETURN(rc);
1372 }
1373
1374 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1375                                 int len, void *karg, void *uarg)
1376 {
1377         int rc;
1378         ENTRY;
1379
1380         EXP_CHECK_DT_OP(exp, iocontrol);
1381         EXP_COUNTER_INCREMENT(exp, iocontrol);
1382
1383         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1384         RETURN(rc);
1385 }
1386
1387 static inline int obd_enqueue_rqset(struct obd_export *exp,
1388                                     struct obd_info *oinfo,
1389                                     struct ldlm_enqueue_info *einfo)
1390 {
1391         struct ptlrpc_request_set *set = NULL;
1392         int rc;
1393         ENTRY;
1394
1395         EXP_CHECK_DT_OP(exp, enqueue);
1396         EXP_COUNTER_INCREMENT(exp, enqueue);
1397
1398         set =  ptlrpc_prep_set();
1399         if (set == NULL)
1400                 RETURN(-ENOMEM);
1401
1402         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1403         if (rc == 0)
1404                 rc = ptlrpc_set_wait(set);
1405         ptlrpc_set_destroy(set);
1406         RETURN(rc);
1407 }
1408
1409 static inline int obd_enqueue(struct obd_export *exp,
1410                               struct obd_info *oinfo,
1411                               struct ldlm_enqueue_info *einfo,
1412                               struct ptlrpc_request_set *set)
1413 {
1414         int rc;
1415         ENTRY;
1416
1417         EXP_CHECK_DT_OP(exp, enqueue);
1418         EXP_COUNTER_INCREMENT(exp, enqueue);
1419
1420         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1421         RETURN(rc);
1422 }
1423
1424 static inline int obd_change_cbdata(struct obd_export *exp,
1425                                     struct lov_stripe_md *lsm,
1426                                     ldlm_iterator_t it, void *data)
1427 {
1428         int rc;
1429         ENTRY;
1430
1431         EXP_CHECK_DT_OP(exp, change_cbdata);
1432         EXP_COUNTER_INCREMENT(exp, change_cbdata);
1433
1434         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1435         RETURN(rc);
1436 }
1437
1438 static inline int obd_find_cbdata(struct obd_export *exp,
1439                                   struct lov_stripe_md *lsm,
1440                                   ldlm_iterator_t it, void *data)
1441 {
1442         int rc;
1443         ENTRY;
1444
1445         EXP_CHECK_DT_OP(exp, find_cbdata);
1446         EXP_COUNTER_INCREMENT(exp, find_cbdata);
1447
1448         rc = OBP(exp->exp_obd, find_cbdata)(exp, lsm, it, data);
1449         RETURN(rc);
1450 }
1451
1452 static inline int obd_cancel(struct obd_export *exp,
1453                              struct lov_stripe_md *ea, __u32 mode,
1454                              struct lustre_handle *lockh)
1455 {
1456         int rc;
1457         ENTRY;
1458
1459         EXP_CHECK_DT_OP(exp, cancel);
1460         EXP_COUNTER_INCREMENT(exp, cancel);
1461
1462         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1463         RETURN(rc);
1464 }
1465
1466 static inline int obd_cancel_unused(struct obd_export *exp,
1467                                     struct lov_stripe_md *ea,
1468                                     ldlm_cancel_flags_t flags,
1469                                     void *opaque)
1470 {
1471         int rc;
1472         ENTRY;
1473
1474         EXP_CHECK_DT_OP(exp, cancel_unused);
1475         EXP_COUNTER_INCREMENT(exp, cancel_unused);
1476
1477         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1478         RETURN(rc);
1479 }
1480
1481 static inline int obd_pin(struct obd_export *exp, const struct lu_fid *fid,
1482                           struct obd_capa *oc, struct obd_client_handle *handle,
1483                           int flag)
1484 {
1485         int rc;
1486         ENTRY;
1487
1488         EXP_CHECK_DT_OP(exp, pin);
1489         EXP_COUNTER_INCREMENT(exp, pin);
1490
1491         rc = OBP(exp->exp_obd, pin)(exp, fid, oc, handle, flag);
1492         RETURN(rc);
1493 }
1494
1495 static inline int obd_unpin(struct obd_export *exp,
1496                             struct obd_client_handle *handle, int flag)
1497 {
1498         int rc;
1499         ENTRY;
1500
1501         EXP_CHECK_DT_OP(exp, unpin);
1502         EXP_COUNTER_INCREMENT(exp, unpin);
1503
1504         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1505         RETURN(rc);
1506 }
1507
1508
1509 static inline void obd_import_event(struct obd_device *obd,
1510                                     struct obd_import *imp,
1511                                     enum obd_import_event event)
1512 {
1513         ENTRY;
1514         if (!obd) {
1515                 CERROR("NULL device\n");
1516                 EXIT;
1517                 return;
1518         }
1519         if (obd->obd_set_up && OBP(obd, import_event)) {
1520                 OBD_COUNTER_INCREMENT(obd, import_event);
1521                 OBP(obd, import_event)(obd, imp, event);
1522         }
1523         EXIT;
1524 }
1525
1526 static inline int obd_llog_connect(struct obd_export *exp,
1527                                    struct llogd_conn_body *body)
1528 {
1529         int rc;
1530         ENTRY;
1531
1532         OBD_CHECK_DT_OP(exp->exp_obd, llog_connect, 0);
1533         EXP_COUNTER_INCREMENT(exp, llog_connect);
1534
1535         rc = OBP(exp->exp_obd, llog_connect)(exp, body);
1536         RETURN(rc);
1537 }
1538
1539
1540 static inline int obd_notify(struct obd_device *obd,
1541                              struct obd_device *watched,
1542                              enum obd_notify_event ev,
1543                              void *data)
1544 {
1545         int rc;
1546         ENTRY;
1547         OBD_CHECK_DEV(obd);
1548
1549         /* the check for async_recov is a complete hack - I'm hereby
1550            overloading the meaning to also mean "this was called from
1551            mds_postsetup".  I know that my mds is able to handle notifies
1552            by this point, and it needs to get them to execute mds_postrecov. */
1553         if (!obd->obd_set_up && !obd->obd_async_recov) {
1554                 CDEBUG(D_HA, "obd %s not set up\n", obd->obd_name);
1555                 RETURN(-EINVAL);
1556         }
1557
1558         if (!OBP(obd, notify)) {
1559                 CERROR("obd %s has no notify handler\n", obd->obd_name);
1560                 RETURN(-ENOSYS);
1561         }
1562
1563         OBD_COUNTER_INCREMENT(obd, notify);
1564         rc = OBP(obd, notify)(obd, watched, ev, data);
1565         RETURN(rc);
1566 }
1567
1568 static inline int obd_notify_observer(struct obd_device *observer,
1569                                       struct obd_device *observed,
1570                                       enum obd_notify_event ev,
1571                                       void *data)
1572 {
1573         int rc1;
1574         int rc2;
1575
1576         struct obd_notify_upcall *onu;
1577
1578         if (observer->obd_observer)
1579                 rc1 = obd_notify(observer->obd_observer, observed, ev, data);
1580         else
1581                 rc1 = 0;
1582         /*
1583          * Also, call non-obd listener, if any
1584          */
1585         onu = &observer->obd_upcall;
1586         if (onu->onu_upcall != NULL)
1587                 rc2 = onu->onu_upcall(observer, observed, ev,
1588                                       onu->onu_owner, NULL);
1589         else
1590                 rc2 = 0;
1591
1592         return rc1 ? rc1 : rc2;
1593 }
1594
1595 static inline int obd_quotacheck(struct obd_export *exp,
1596                                  struct obd_quotactl *oqctl)
1597 {
1598         int rc;
1599         ENTRY;
1600
1601         EXP_CHECK_DT_OP(exp, quotacheck);
1602         EXP_COUNTER_INCREMENT(exp, quotacheck);
1603
1604         rc = OBP(exp->exp_obd, quotacheck)(exp->exp_obd, exp, oqctl);
1605         RETURN(rc);
1606 }
1607
1608 static inline int obd_quotactl(struct obd_export *exp,
1609                                struct obd_quotactl *oqctl)
1610 {
1611         int rc;
1612         ENTRY;
1613
1614         EXP_CHECK_DT_OP(exp, quotactl);
1615         EXP_COUNTER_INCREMENT(exp, quotactl);
1616
1617         rc = OBP(exp->exp_obd, quotactl)(exp->exp_obd, exp, oqctl);
1618         RETURN(rc);
1619 }
1620
1621 static inline int obd_quota_adjust_qunit(struct obd_export *exp,
1622                                          struct quota_adjust_qunit *oqaq,
1623                                          struct lustre_quota_ctxt *qctxt)
1624 {
1625 #if defined(LPROCFS) && defined(HAVE_QUOTA_SUPPORT)
1626         struct timeval work_start;
1627         struct timeval work_end;
1628         long timediff;
1629 #endif
1630         int rc;
1631         ENTRY;
1632
1633 #if defined(LPROCFS) && defined(HAVE_QUOTA_SUPPORT)
1634         if (qctxt)
1635                 cfs_gettimeofday(&work_start);
1636 #endif
1637         EXP_CHECK_DT_OP(exp, quota_adjust_qunit);
1638         EXP_COUNTER_INCREMENT(exp, quota_adjust_qunit);
1639
1640         rc = OBP(exp->exp_obd, quota_adjust_qunit)(exp, oqaq, qctxt);
1641
1642 #if defined(LPROCFS) && defined(HAVE_QUOTA_SUPPORT)
1643         if (qctxt) {
1644                 cfs_gettimeofday(&work_end);
1645                 timediff = cfs_timeval_sub(&work_end, &work_start, NULL);
1646                 lprocfs_counter_add(qctxt->lqc_stats, LQUOTA_ADJUST_QUNIT,
1647                                     timediff);
1648         }
1649 #endif
1650         RETURN(rc);
1651 }
1652
1653 static inline int obd_health_check(struct obd_device *obd)
1654 {
1655         /* returns: 0 on healthy
1656          *         >0 on unhealthy + reason code/flag
1657          *            however the only suppored reason == 1 right now
1658          *            We'll need to define some better reasons
1659          *            or flags in the future.
1660          *         <0 on error
1661          */
1662         int rc;
1663         ENTRY;
1664
1665         /* don't use EXP_CHECK_DT_OP, because NULL method is normal here */
1666         if (obd == NULL || !OBT(obd)) {
1667                 CERROR("cleaned up obd\n");
1668                 RETURN(-EOPNOTSUPP);
1669         }
1670         if (!obd->obd_set_up || obd->obd_stopping)
1671                 RETURN(0);
1672         if (!OBP(obd, health_check))
1673                 RETURN(0);
1674
1675         rc = OBP(obd, health_check)(obd);
1676         RETURN(rc);
1677 }
1678
1679 static inline int obd_register_observer(struct obd_device *obd,
1680                                         struct obd_device *observer)
1681 {
1682         ENTRY;
1683         OBD_CHECK_DEV(obd);
1684         cfs_down_write(&obd->obd_observer_link_sem);
1685         if (obd->obd_observer && observer) {
1686                 cfs_up_write(&obd->obd_observer_link_sem);
1687                 RETURN(-EALREADY);
1688         }
1689         obd->obd_observer = observer;
1690         cfs_up_write(&obd->obd_observer_link_sem);
1691         RETURN(0);
1692 }
1693
1694 static inline int obd_pin_observer(struct obd_device *obd,
1695                                    struct obd_device **observer)
1696 {
1697         ENTRY;
1698         cfs_down_read(&obd->obd_observer_link_sem);
1699         if (!obd->obd_observer) {
1700                 *observer = NULL;
1701                 cfs_up_read(&obd->obd_observer_link_sem);
1702                 RETURN(-ENOENT);
1703         }
1704         *observer = obd->obd_observer;
1705         RETURN(0);
1706 }
1707
1708 static inline int obd_unpin_observer(struct obd_device *obd)
1709 {
1710         ENTRY;
1711         cfs_up_read(&obd->obd_observer_link_sem);
1712         RETURN(0);
1713 }
1714
1715 #if 0
1716 static inline int obd_register_page_removal_cb(struct obd_export *exp,
1717                                                obd_page_removal_cb_t cb,
1718                                                obd_pin_extent_cb pin_cb)
1719 {
1720         int rc;
1721         ENTRY;
1722
1723         OBD_CHECK_DT_OP(exp->exp_obd, register_page_removal_cb, 0);
1724         OBD_COUNTER_INCREMENT(exp->exp_obd, register_page_removal_cb);
1725
1726         rc = OBP(exp->exp_obd, register_page_removal_cb)(exp, cb, pin_cb);
1727         RETURN(rc);
1728 }
1729
1730 static inline int obd_unregister_page_removal_cb(struct obd_export *exp,
1731                                                  obd_page_removal_cb_t cb)
1732 {
1733         int rc;
1734         ENTRY;
1735
1736         OBD_CHECK_DT_OP(exp->exp_obd, unregister_page_removal_cb, 0);
1737         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_page_removal_cb);
1738
1739         rc = OBP(exp->exp_obd, unregister_page_removal_cb)(exp, cb);
1740         RETURN(rc);
1741 }
1742
1743 static inline int obd_register_lock_cancel_cb(struct obd_export *exp,
1744                                               obd_lock_cancel_cb cb)
1745 {
1746         int rc;
1747         ENTRY;
1748
1749         OBD_CHECK_DT_OP(exp->exp_obd, register_lock_cancel_cb, 0);
1750         OBD_COUNTER_INCREMENT(exp->exp_obd, register_lock_cancel_cb);
1751
1752         rc = OBP(exp->exp_obd, register_lock_cancel_cb)(exp, cb);
1753         RETURN(rc);
1754 }
1755
1756 static inline int obd_unregister_lock_cancel_cb(struct obd_export *exp,
1757                                                  obd_lock_cancel_cb cb)
1758 {
1759         int rc;
1760         ENTRY;
1761
1762         OBD_CHECK_DT_OP(exp->exp_obd, unregister_lock_cancel_cb, 0);
1763         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_lock_cancel_cb);
1764
1765         rc = OBP(exp->exp_obd, unregister_lock_cancel_cb)(exp, cb);
1766         RETURN(rc);
1767 }
1768 #endif
1769
1770 /* metadata helpers */
1771 static inline int md_getstatus(struct obd_export *exp,
1772                                struct lu_fid *fid, struct obd_capa **pc)
1773 {
1774         int rc;
1775         ENTRY;
1776
1777         EXP_CHECK_MD_OP(exp, getstatus);
1778         EXP_MD_COUNTER_INCREMENT(exp, getstatus);
1779         rc = MDP(exp->exp_obd, getstatus)(exp, fid, pc);
1780         RETURN(rc);
1781 }
1782
1783 static inline int md_getattr(struct obd_export *exp, struct md_op_data *op_data,
1784                              struct ptlrpc_request **request)
1785 {
1786         int rc;
1787         ENTRY;
1788         EXP_CHECK_MD_OP(exp, getattr);
1789         EXP_MD_COUNTER_INCREMENT(exp, getattr);
1790         rc = MDP(exp->exp_obd, getattr)(exp, op_data, request);
1791         RETURN(rc);
1792 }
1793
1794 static inline int md_change_cbdata(struct obd_export *exp,
1795                                    const struct lu_fid *fid,
1796                                    ldlm_iterator_t it, void *data)
1797 {
1798         int rc;
1799         ENTRY;
1800         EXP_CHECK_MD_OP(exp, change_cbdata);
1801         EXP_MD_COUNTER_INCREMENT(exp, change_cbdata);
1802         rc = MDP(exp->exp_obd, change_cbdata)(exp, fid, it, data);
1803         RETURN(rc);
1804 }
1805
1806 static inline int md_find_cbdata(struct obd_export *exp,
1807                                  const struct lu_fid *fid,
1808                                  ldlm_iterator_t it, void *data)
1809 {
1810         int rc;
1811         ENTRY;
1812         EXP_CHECK_MD_OP(exp, find_cbdata);
1813         EXP_MD_COUNTER_INCREMENT(exp, find_cbdata);
1814         rc = MDP(exp->exp_obd, find_cbdata)(exp, fid, it, data);
1815         RETURN(rc);
1816 }
1817
1818 static inline int md_close(struct obd_export *exp, struct md_op_data *op_data,
1819                            struct md_open_data *mod,
1820                            struct ptlrpc_request **request)
1821 {
1822         int rc;
1823         ENTRY;
1824         EXP_CHECK_MD_OP(exp, close);
1825         EXP_MD_COUNTER_INCREMENT(exp, close);
1826         rc = MDP(exp->exp_obd, close)(exp, op_data, mod, request);
1827         RETURN(rc);
1828 }
1829
1830 static inline int md_create(struct obd_export *exp, struct md_op_data *op_data,
1831                             const void *data, int datalen, int mode, __u32 uid,
1832                             __u32 gid, cfs_cap_t cap_effective, __u64 rdev,
1833                             struct ptlrpc_request **request)
1834 {
1835         int rc;
1836         ENTRY;
1837         EXP_CHECK_MD_OP(exp, create);
1838         EXP_MD_COUNTER_INCREMENT(exp, create);
1839         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1840                                        uid, gid, cap_effective, rdev, request);
1841         RETURN(rc);
1842 }
1843
1844 static inline int md_done_writing(struct obd_export *exp,
1845                                   struct md_op_data *op_data,
1846                                   struct md_open_data *mod)
1847 {
1848         int rc;
1849         ENTRY;
1850         EXP_CHECK_MD_OP(exp, done_writing);
1851         EXP_MD_COUNTER_INCREMENT(exp, done_writing);
1852         rc = MDP(exp->exp_obd, done_writing)(exp, op_data, mod);
1853         RETURN(rc);
1854 }
1855
1856 static inline int md_enqueue(struct obd_export *exp,
1857                              struct ldlm_enqueue_info *einfo,
1858                              struct lookup_intent *it,
1859                              struct md_op_data *op_data,
1860                              struct lustre_handle *lockh,
1861                              void *lmm, int lmmsize,
1862                              struct ptlrpc_request **req,
1863                              int extra_lock_flags)
1864 {
1865         int rc;
1866         ENTRY;
1867         EXP_CHECK_MD_OP(exp, enqueue);
1868         EXP_MD_COUNTER_INCREMENT(exp, enqueue);
1869         rc = MDP(exp->exp_obd, enqueue)(exp, einfo, it, op_data, lockh,
1870                                         lmm, lmmsize, req, extra_lock_flags);
1871         RETURN(rc);
1872 }
1873
1874 static inline int md_getattr_name(struct obd_export *exp,
1875                                   struct md_op_data *op_data,
1876                                   struct ptlrpc_request **request)
1877 {
1878         int rc;
1879         ENTRY;
1880         EXP_CHECK_MD_OP(exp, getattr_name);
1881         EXP_MD_COUNTER_INCREMENT(exp, getattr_name);
1882         rc = MDP(exp->exp_obd, getattr_name)(exp, op_data, request);
1883         RETURN(rc);
1884 }
1885
1886 static inline int md_intent_lock(struct obd_export *exp,
1887                                  struct md_op_data *op_data, void *lmm,
1888                                  int lmmsize, struct lookup_intent *it,
1889                                  int flags, struct ptlrpc_request **reqp,
1890                                  ldlm_blocking_callback cb_blocking,
1891                                  int extra_lock_flags)
1892 {
1893         int rc;
1894         ENTRY;
1895         EXP_CHECK_MD_OP(exp, intent_lock);
1896         EXP_MD_COUNTER_INCREMENT(exp, intent_lock);
1897         rc = MDP(exp->exp_obd, intent_lock)(exp, op_data, lmm, lmmsize,
1898                                             it, flags, reqp, cb_blocking,
1899                                             extra_lock_flags);
1900         RETURN(rc);
1901 }
1902
1903 static inline int md_link(struct obd_export *exp, struct md_op_data *op_data,
1904                           struct ptlrpc_request **request)
1905 {
1906         int rc;
1907         ENTRY;
1908         EXP_CHECK_MD_OP(exp, link);
1909         EXP_MD_COUNTER_INCREMENT(exp, link);
1910         rc = MDP(exp->exp_obd, link)(exp, op_data, request);
1911         RETURN(rc);
1912 }
1913
1914 static inline int md_rename(struct obd_export *exp, struct md_op_data *op_data,
1915                             const char *old, int oldlen, const char *new,
1916                             int newlen, struct ptlrpc_request **request)
1917 {
1918         int rc;
1919         ENTRY;
1920         EXP_CHECK_MD_OP(exp, rename);
1921         EXP_MD_COUNTER_INCREMENT(exp, rename);
1922         rc = MDP(exp->exp_obd, rename)(exp, op_data, old, oldlen, new,
1923                                        newlen, request);
1924         RETURN(rc);
1925 }
1926
1927 static inline int md_is_subdir(struct obd_export *exp,
1928                                const struct lu_fid *pfid,
1929                                const struct lu_fid *cfid,
1930                                struct ptlrpc_request **request)
1931 {
1932         int rc;
1933         ENTRY;
1934         EXP_CHECK_MD_OP(exp, is_subdir);
1935         EXP_MD_COUNTER_INCREMENT(exp, is_subdir);
1936         rc = MDP(exp->exp_obd, is_subdir)(exp, pfid, cfid, request);
1937         RETURN(rc);
1938 }
1939
1940 static inline int md_setattr(struct obd_export *exp, struct md_op_data *op_data,
1941                              void *ea, int ealen, void *ea2, int ea2len,
1942                              struct ptlrpc_request **request,
1943                              struct md_open_data **mod)
1944 {
1945         int rc;
1946         ENTRY;
1947         EXP_CHECK_MD_OP(exp, setattr);
1948         EXP_MD_COUNTER_INCREMENT(exp, setattr);
1949         rc = MDP(exp->exp_obd, setattr)(exp, op_data, ea, ealen,
1950                                         ea2, ea2len, request, mod);
1951         RETURN(rc);
1952 }
1953
1954 static inline int md_sync(struct obd_export *exp, const struct lu_fid *fid,
1955                           struct obd_capa *oc, struct ptlrpc_request **request)
1956 {
1957         int rc;
1958         ENTRY;
1959         EXP_CHECK_MD_OP(exp, sync);
1960         EXP_MD_COUNTER_INCREMENT(exp, sync);
1961         rc = MDP(exp->exp_obd, sync)(exp, fid, oc, request);
1962         RETURN(rc);
1963 }
1964
1965 static inline int md_readpage(struct obd_export *exp, const struct lu_fid *fid,
1966                               struct obd_capa *oc, __u64 offset,
1967                               struct page *page,
1968                               struct ptlrpc_request **request)
1969 {
1970         int rc;
1971         ENTRY;
1972         EXP_CHECK_MD_OP(exp, readpage);
1973         EXP_MD_COUNTER_INCREMENT(exp, readpage);
1974         rc = MDP(exp->exp_obd, readpage)(exp, fid, oc, offset, page, request);
1975         RETURN(rc);
1976 }
1977
1978 static inline int md_unlink(struct obd_export *exp, struct md_op_data *op_data,
1979                             struct ptlrpc_request **request)
1980 {
1981         int rc;
1982         ENTRY;
1983         EXP_CHECK_MD_OP(exp, unlink);
1984         EXP_MD_COUNTER_INCREMENT(exp, unlink);
1985         rc = MDP(exp->exp_obd, unlink)(exp, op_data, request);
1986         RETURN(rc);
1987 }
1988
1989 static inline int md_get_lustre_md(struct obd_export *exp,
1990                                    struct ptlrpc_request *req,
1991                                    struct obd_export *dt_exp,
1992                                    struct obd_export *md_exp,
1993                                    struct lustre_md *md)
1994 {
1995         ENTRY;
1996         EXP_CHECK_MD_OP(exp, get_lustre_md);
1997         EXP_MD_COUNTER_INCREMENT(exp, get_lustre_md);
1998         RETURN(MDP(exp->exp_obd, get_lustre_md)(exp, req, dt_exp, md_exp, md));
1999 }
2000
2001 static inline int md_free_lustre_md(struct obd_export *exp,
2002                                     struct lustre_md *md)
2003 {
2004         ENTRY;
2005         EXP_CHECK_MD_OP(exp, free_lustre_md);
2006         EXP_MD_COUNTER_INCREMENT(exp, free_lustre_md);
2007         RETURN(MDP(exp->exp_obd, free_lustre_md)(exp, md));
2008 }
2009
2010 static inline int md_setxattr(struct obd_export *exp,
2011                               const struct lu_fid *fid, struct obd_capa *oc,
2012                               obd_valid valid, const char *name,
2013                               const char *input, int input_size,
2014                               int output_size, int flags, __u32 suppgid,
2015                               struct ptlrpc_request **request)
2016 {
2017         ENTRY;
2018         EXP_CHECK_MD_OP(exp, setxattr);
2019         EXP_MD_COUNTER_INCREMENT(exp, setxattr);
2020         RETURN(MDP(exp->exp_obd, setxattr)(exp, fid, oc, valid, name, input,
2021                                            input_size, output_size, flags,
2022                                            suppgid, request));
2023 }
2024
2025 static inline int md_getxattr(struct obd_export *exp,
2026                               const struct lu_fid *fid, struct obd_capa *oc,
2027                               obd_valid valid, const char *name,
2028                               const char *input, int input_size,
2029                               int output_size, int flags,
2030                               struct ptlrpc_request **request)
2031 {
2032         ENTRY;
2033         EXP_CHECK_MD_OP(exp, getxattr);
2034         EXP_MD_COUNTER_INCREMENT(exp, getxattr);
2035         RETURN(MDP(exp->exp_obd, getxattr)(exp, fid, oc, valid, name, input,
2036                                            input_size, output_size, flags,
2037                                            request));
2038 }
2039
2040 static inline int md_set_open_replay_data(struct obd_export *exp,
2041                                           struct obd_client_handle *och,
2042                                           struct ptlrpc_request *open_req)
2043 {
2044         ENTRY;
2045         EXP_CHECK_MD_OP(exp, set_open_replay_data);
2046         EXP_MD_COUNTER_INCREMENT(exp, set_open_replay_data);
2047         RETURN(MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req));
2048 }
2049
2050 static inline int md_clear_open_replay_data(struct obd_export *exp,
2051                                             struct obd_client_handle *och)
2052 {
2053         ENTRY;
2054         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
2055         EXP_MD_COUNTER_INCREMENT(exp, clear_open_replay_data);
2056         RETURN(MDP(exp->exp_obd, clear_open_replay_data)(exp, och));
2057 }
2058
2059 static inline int md_set_lock_data(struct obd_export *exp,
2060                                    __u64 *lockh, void *data, __u32 *bits)
2061 {
2062         ENTRY;
2063         EXP_CHECK_MD_OP(exp, set_lock_data);
2064         EXP_MD_COUNTER_INCREMENT(exp, set_lock_data);
2065         RETURN(MDP(exp->exp_obd, set_lock_data)(exp, lockh, data, bits));
2066 }
2067
2068 static inline int md_cancel_unused(struct obd_export *exp,
2069                                    const struct lu_fid *fid,
2070                                    ldlm_policy_data_t *policy,
2071                                    ldlm_mode_t mode,
2072                                    ldlm_cancel_flags_t flags,
2073                                    void *opaque)
2074 {
2075         int rc;
2076         ENTRY;
2077
2078         EXP_CHECK_MD_OP(exp, cancel_unused);
2079         EXP_MD_COUNTER_INCREMENT(exp, cancel_unused);
2080
2081         rc = MDP(exp->exp_obd, cancel_unused)(exp, fid, policy, mode,
2082                                               flags, opaque);
2083         RETURN(rc);
2084 }
2085
2086 static inline ldlm_mode_t md_lock_match(struct obd_export *exp, int flags,
2087                                         const struct lu_fid *fid,
2088                                         ldlm_type_t type,
2089                                         ldlm_policy_data_t *policy,
2090                                         ldlm_mode_t mode,
2091                                         struct lustre_handle *lockh)
2092 {
2093         ENTRY;
2094         EXP_CHECK_MD_OP(exp, lock_match);
2095         EXP_MD_COUNTER_INCREMENT(exp, lock_match);
2096         RETURN(MDP(exp->exp_obd, lock_match)(exp, flags, fid, type,
2097                                              policy, mode, lockh));
2098 }
2099
2100 static inline int md_init_ea_size(struct obd_export *exp, int easize,
2101                                   int def_asize, int cookiesize)
2102 {
2103         ENTRY;
2104         EXP_CHECK_MD_OP(exp, init_ea_size);
2105         EXP_MD_COUNTER_INCREMENT(exp, init_ea_size);
2106         RETURN(MDP(exp->exp_obd, init_ea_size)(exp, easize, def_asize,
2107                                                cookiesize));
2108 }
2109
2110 static inline int md_get_remote_perm(struct obd_export *exp,
2111                                      const struct lu_fid *fid,
2112                                      struct obd_capa *oc, __u32 suppgid,
2113                                      struct ptlrpc_request **request)
2114 {
2115         ENTRY;
2116         EXP_CHECK_MD_OP(exp, get_remote_perm);
2117         EXP_MD_COUNTER_INCREMENT(exp, get_remote_perm);
2118         RETURN(MDP(exp->exp_obd, get_remote_perm)(exp, fid, oc, suppgid,
2119                                                   request));
2120 }
2121
2122 static inline int md_renew_capa(struct obd_export *exp, struct obd_capa *ocapa,
2123                                 renew_capa_cb_t cb)
2124 {
2125         int rc;
2126         ENTRY;
2127         EXP_CHECK_MD_OP(exp, renew_capa);
2128         EXP_MD_COUNTER_INCREMENT(exp, renew_capa);
2129         rc = MDP(exp->exp_obd, renew_capa)(exp, ocapa, cb);
2130         RETURN(rc);
2131 }
2132
2133 static inline int md_unpack_capa(struct obd_export *exp,
2134                                  struct ptlrpc_request *req,
2135                                  const struct req_msg_field *field,
2136                                  struct obd_capa **oc)
2137 {
2138         int rc;
2139         ENTRY;
2140         EXP_CHECK_MD_OP(exp, unpack_capa);
2141         EXP_MD_COUNTER_INCREMENT(exp, unpack_capa);
2142         rc = MDP(exp->exp_obd, unpack_capa)(exp, req, field, oc);
2143         RETURN(rc);
2144 }
2145
2146 static inline int md_intent_getattr_async(struct obd_export *exp,
2147                                           struct md_enqueue_info *minfo,
2148                                           struct ldlm_enqueue_info *einfo)
2149 {
2150         int rc;
2151         ENTRY;
2152         EXP_CHECK_MD_OP(exp, intent_getattr_async);
2153         EXP_MD_COUNTER_INCREMENT(exp, intent_getattr_async);
2154         rc = MDP(exp->exp_obd, intent_getattr_async)(exp, minfo, einfo);
2155         RETURN(rc);
2156 }
2157
2158 static inline int md_revalidate_lock(struct obd_export *exp,
2159                                      struct lookup_intent *it,
2160                                      struct lu_fid *fid, __u32 *bits)
2161 {
2162         int rc;
2163         ENTRY;
2164         EXP_CHECK_MD_OP(exp, revalidate_lock);
2165         EXP_MD_COUNTER_INCREMENT(exp, revalidate_lock);
2166         rc = MDP(exp->exp_obd, revalidate_lock)(exp, it, fid, bits);
2167         RETURN(rc);
2168 }
2169
2170
2171 /* OBD Metadata Support */
2172
2173 extern int obd_init_caches(void);
2174 extern void obd_cleanup_caches(void);
2175
2176 /* support routines */
2177 extern cfs_mem_cache_t *obdo_cachep;
2178
2179 #define OBDO_ALLOC(ptr)                                                       \
2180 do {                                                                          \
2181         OBD_SLAB_ALLOC_PTR((ptr), obdo_cachep);                               \
2182 } while(0)
2183
2184 #define OBDO_FREE(ptr)                                                        \
2185 do {                                                                          \
2186         OBD_SLAB_FREE_PTR((ptr), obdo_cachep);                                \
2187 } while(0)
2188
2189
2190 static inline void obdo2fid(struct obdo *oa, struct lu_fid *fid)
2191 {
2192         /* something here */
2193 }
2194
2195 static inline void fid2obdo(struct lu_fid *fid, struct obdo *oa)
2196 {
2197         /* something here */
2198 }
2199
2200 /* I'm as embarrassed about this as you are.
2201  *
2202  * <shaver> // XXX do not look into _superhack with remaining eye
2203  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
2204 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
2205
2206 /* sysctl.c */
2207 extern void obd_sysctl_init (void);
2208 extern void obd_sysctl_clean (void);
2209
2210 /* uuid.c  */
2211 typedef __u8 class_uuid_t[16];
2212 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
2213
2214 /* lustre_peer.c    */
2215 int lustre_uuid_to_peer(const char *uuid, lnet_nid_t *peer_nid, int index);
2216 int class_add_uuid(const char *uuid, __u64 nid);
2217 int class_del_uuid (const char *uuid);
2218 void class_init_uuidlist(void);
2219 void class_exit_uuidlist(void);
2220
2221 /* mea.c */
2222 int mea_name2idx(struct lmv_stripe_md *mea, const char *name, int namelen);
2223 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
2224
2225 /* prng.c */
2226 void ll_generate_random_uuid(class_uuid_t uuid_out);
2227
2228 #endif /* __LINUX_OBD_CLASS_H */