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 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
  69 struct lu_device_type;
  70
  71 /* genops.c */
  72 struct obd_export *class_conn2export(struct lustre_handle *);
  73 int class_register_type(struct obd_ops *, struct md_ops *,
  74                         struct lprocfs_vars *, const char *nm,
  75                         struct lu_device_type *ldt);
  76 int class_unregister_type(const char *nm);
  77
  78 struct obd_device *class_newdev(const char *type_name, const char *name);
  79 void class_release_dev(struct obd_device *obd);
  80
  81 int class_name2dev(const char *name);
  82 struct obd_device *class_name2obd(const char *name);
  83 int class_uuid2dev(struct obd_uuid *uuid);
  84 struct obd_device *class_uuid2obd(struct obd_uuid *uuid);
  85 void class_obd_list(void);
  86 struct obd_device * class_find_client_obd(struct obd_uuid *tgt_uuid,
  87                                           const char * typ_name,
  88                                           struct obd_uuid *grp_uuid);
  89 struct obd_device * class_devices_in_group(struct obd_uuid *grp_uuid,
  90                                            int *next);
  91 struct obd_device * class_num2obd(int num);
  92
  93 int class_notify_sptlrpc_conf(const char *fsname, int namelen);
  94
  95 char *obd_export_nid2str(struct obd_export *exp);
  96
  97 int obd_export_evict_by_nid(struct obd_device *obd, const char *nid);
  98 int obd_export_evict_by_uuid(struct obd_device *obd, const char *uuid);
  99
 100 int obd_zombie_impexp_init(void);
 101 void obd_zombie_impexp_stop(void);
 102 void obd_zombie_impexp_cull(void);
 103 void obd_zombie_barrier(void);
 104 void obd_exports_barrier(struct obd_device *obd);
 105
 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);
 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         struct list_head    cld_list_chain;
 156         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 watching */
 160                             cld_lostlock:1, /* lock not requeued */
 161                             cld_is_sptlrpc:1;
 162 };
 163
 164 struct lustre_profile {
 165         struct list_head lp_list;
 166         char            *lp_profile;
 167         char            *lp_dt;
 168         char            *lp_md;
 169 };
 170
 171 struct lustre_profile *class_get_profile(const char * prof);
 172 void class_del_profile(const char *prof);
 173 void class_del_profiles(void);
 174
 175 #define class_export_rpc_get(exp)                                       \
 176 ({                                                                      \
 177         atomic_inc(&(exp)->exp_rpc_count);                              \
 178         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",    \
 179                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 180         class_export_get(exp);                                          \
 181 })
 182
 183 #define class_export_rpc_put(exp)                                       \
 184 ({                                                                      \
 185         LASSERT(atomic_read(&exp->exp_rpc_count) > 0);                  \
 186         atomic_dec(&(exp)->exp_rpc_count);                              \
 187         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",    \
 188                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 189         class_export_put(exp);                                          \
 190 })
 191
 192 #define class_export_lock_get(exp)                                      \
 193 ({                                                                      \
 194         atomic_inc(&(exp)->exp_locks_count);                            \
 195         CDEBUG(D_INFO, "lock GETting export %p : new locks_count %d\n", \
 196                (exp), atomic_read(&(exp)->exp_locks_count));            \
 197         class_export_get(exp);                                          \
 198 })
 199
 200 #define class_export_lock_put(exp)                                      \
 201 ({                                                                      \
 202         LASSERT(atomic_read(&exp->exp_locks_count) > 0);                \
 203         atomic_dec(&(exp)->exp_locks_count);                            \
 204         CDEBUG(D_INFO, "lock PUTting export %p : new locks_count %d\n", \
 205                (exp), atomic_read(&(exp)->exp_locks_count));            \
 206         class_export_put(exp);                                          \
 207 })
 208
 209 #define class_export_cb_get(exp)                                        \
 210 ({                                                                      \
 211         atomic_inc(&(exp)->exp_cb_count);                               \
 212         CDEBUG(D_INFO, "callback GETting export %p : new cb_count %d\n",\
 213                (exp), atomic_read(&(exp)->exp_cb_count));               \
 214         class_export_get(exp);                                          \
 215 })
 216
 217 #define class_export_cb_put(exp)                                        \
 218 ({                                                                      \
 219         LASSERT(atomic_read(&exp->exp_cb_count) > 0);                   \
 220         atomic_dec(&(exp)->exp_cb_count);                               \
 221         CDEBUG(D_INFO, "callback PUTting export %p : new cb_count %d\n",\
 222                (exp), atomic_read(&(exp)->exp_cb_count));               \
 223         class_export_put(exp);                                          \
 224 })
 225
 226 /* genops.c */
 227 struct obd_export *class_export_get(struct obd_export *exp);
 228 void class_export_put(struct obd_export *exp);
 229 struct obd_export *class_new_export(struct obd_device *obddev,
 230                                     struct obd_uuid *cluuid);
 231 void class_unlink_export(struct obd_export *exp);
 232
 233 struct obd_import *class_import_get(struct obd_import *);
 234 void class_import_put(struct obd_import *);
 235 struct obd_import *class_new_import(struct obd_device *obd);
 236 void class_destroy_import(struct obd_import *exp);
 237
 238 struct obd_type *class_search_type(const char *name);
 239 struct obd_type *class_get_type(const char *name);
 240 void class_put_type(struct obd_type *type);
 241 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 242                   struct obd_uuid *cluuid);
 243 int class_disconnect(struct obd_export *exp);
 244 void class_fail_export(struct obd_export *exp);
 245 void class_disconnect_exports(struct obd_device *obddev);
 246 int class_manual_cleanup(struct obd_device *obd);
 247 void class_disconnect_stale_exports(struct obd_device *,
 248                                     int (*test_export)(struct obd_export *));
 249 static inline enum obd_option exp_flags_from_obd(struct obd_device *obd)
 250 {
 251         return ((obd->obd_fail ? OBD_OPT_FAILOVER : 0) |
 252                 (obd->obd_force ? OBD_OPT_FORCE : 0) |
 253                 (obd->obd_abort_recovery ? OBD_OPT_ABORT_RECOV : 0) |
 254                 0);
 255 }
 256
 257 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_flag valid);
 258 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
 259 void obdo_from_iattr(struct obdo *oa, struct iattr *attr,
 260                      unsigned int ia_valid);
 261 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, obd_flag valid);
 262 void md_from_obdo(struct md_op_data *op_data, struct obdo *oa, obd_flag valid);
 263 void obdo_from_md(struct obdo *oa, struct md_op_data *op_data,
 264                   unsigned int valid);
 265
 266 #define OBT(dev)        (dev)->obd_type
 267 #define OBP(dev, op)    (dev)->obd_type->typ_dt_ops->o_ ## op
 268 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
 269 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 270
 271 /* Ensure obd_setup: used for cleanup which must be called
 272    while obd is stopping */
 273 #define OBD_CHECK_DEV(obd)                                      \
 274 do {                                                            \
 275         if (!(obd)) {                                           \
 276                 CERROR("NULL device\n");                        \
 277                 RETURN(-ENODEV);                                \
 278         }                                                       \
 279 } while (0)
 280
 281 /* ensure obd_setup and !obd_stopping */
 282 #define OBD_CHECK_DEV_ACTIVE(obd)                               \
 283 do {                                                            \
 284         OBD_CHECK_DEV(obd);                                     \
 285         if (!(obd)->obd_set_up || (obd)->obd_stopping) {        \
 286                 CERROR("Device %d not setup\n",                 \
 287                        (obd)->obd_minor);                       \
 288                 RETURN(-ENODEV);                                \
 289         }                                                       \
 290 } while (0)
 291
 292
 293 #ifdef LPROCFS
 294 #define OBD_COUNTER_OFFSET(op)                                  \
 295         ((offsetof(struct obd_ops, o_ ## op) -                  \
 296           offsetof(struct obd_ops, o_iocontrol))                \
 297          / sizeof(((struct obd_ops *)(0))->o_iocontrol))
 298
 299 #define OBD_COUNTER_INCREMENT(obdx, op)                           \
 300         if ((obdx)->obd_stats != NULL) {                          \
 301                 unsigned int coffset;                             \
 302                 coffset = (unsigned int)((obdx)->obd_cntr_base) + \
 303                         OBD_COUNTER_OFFSET(op);                   \
 304                 LASSERT(coffset < (obdx)->obd_stats->ls_num);     \
 305                 lprocfs_counter_incr((obdx)->obd_stats, coffset); \
 306         }
 307
 308 #define EXP_COUNTER_INCREMENT(export, op)                                    \
 309         if ((export)->exp_obd->obd_stats != NULL) {                          \
 310                 unsigned int coffset;                                        \
 311                 coffset = (unsigned int)((export)->exp_obd->obd_cntr_base) + \
 312                         OBD_COUNTER_OFFSET(op);                              \
 313                 LASSERT(coffset < (export)->exp_obd->obd_stats->ls_num);     \
 314                 lprocfs_counter_incr((export)->exp_obd->obd_stats, coffset); \
 315                 if ((export)->exp_nid_stats != NULL &&                       \
 316                     (export)->exp_nid_stats->nid_stats != NULL)              \
 317                         lprocfs_counter_incr(                                \
 318                                 (export)->exp_nid_stats->nid_stats, coffset);\
 319         }
 320
 321 #define MD_COUNTER_OFFSET(op)                                   \
 322         ((offsetof(struct md_ops, m_ ## op) -                   \
 323           offsetof(struct md_ops, m_getstatus))                 \
 324          / sizeof(((struct md_ops *)(0))->m_getstatus))
 325
 326 #define MD_COUNTER_INCREMENT(obdx, op)                           \
 327         if ((obd)->md_stats != NULL) {                           \
 328                 unsigned int coffset;                            \
 329                 coffset = (unsigned int)((obdx)->md_cntr_base) + \
 330                         MD_COUNTER_OFFSET(op);                   \
 331                 LASSERT(coffset < (obdx)->md_stats->ls_num);     \
 332                 lprocfs_counter_incr((obdx)->md_stats, coffset); \
 333         }
 334
 335 #define EXP_MD_COUNTER_INCREMENT(export, op)                                 \
 336         if ((export)->exp_obd->obd_stats != NULL) {                          \
 337                 unsigned int coffset;                                        \
 338                 coffset = (unsigned int)((export)->exp_obd->md_cntr_base) +  \
 339                         MD_COUNTER_OFFSET(op);                               \
 340                 LASSERT(coffset < (export)->exp_obd->md_stats->ls_num);      \
 341                 lprocfs_counter_incr((export)->exp_obd->md_stats, coffset);  \
 342                 if ((export)->exp_md_stats != NULL)                          \
 343                         lprocfs_counter_incr(                                \
 344                                 (export)->exp_md_stats, coffset);            \
 345         }
 346
 347 #else
 348 #define OBD_COUNTER_OFFSET(op)
 349 #define OBD_COUNTER_INCREMENT(obd, op)
 350 #define EXP_COUNTER_INCREMENT(exp, op)
 351 #define MD_COUNTER_INCREMENT(obd, op)
 352 #define EXP_MD_COUNTER_INCREMENT(exp, op)
 353 #endif
 354
 355 #define OBD_CHECK_MD_OP(obd, op, err)                           \
 356 do {                                                            \
 357         if (!OBT(obd) || !MDP((obd), op)) {                     \
 358                 if (err)                                        \
 359                         CERROR("md_" #op ": dev %s/%d no operation\n", \
 360                                obd->obd_name, obd->obd_minor);  \
 361                 RETURN(err);                                    \
 362         }                                                       \
 363 } while (0)
 364
 365 #define EXP_CHECK_MD_OP(exp, op)                                \
 366 do {                                                            \
 367         if ((exp) == NULL) {                                    \
 368                 CERROR("obd_" #op ": NULL export\n");           \
 369                 RETURN(-ENODEV);                                \
 370         }                                                       \
 371         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 372                 CERROR("obd_" #op ": cleaned up obd\n");        \
 373                 RETURN(-EOPNOTSUPP);                            \
 374         }                                                       \
 375         if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
 376                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 377                        (exp)->exp_obd->obd_name,                \
 378                        (exp)->exp_obd->obd_minor);              \
 379                 RETURN(-EOPNOTSUPP);                            \
 380         }                                                       \
 381 } while (0)
 382
 383
 384 #define OBD_CHECK_DT_OP(obd, op, err)                           \
 385 do {                                                            \
 386         if (!OBT(obd) || !OBP((obd), op)) {                     \
 387                 if (err)                                        \
 388                         CERROR("obd_" #op ": dev %d no operation\n",    \
 389                                obd->obd_minor);                 \
 390                 RETURN(err);                                    \
 391         }                                                       \
 392 } while (0)
 393
 394 #define EXP_CHECK_DT_OP(exp, op)                                \
 395 do {                                                            \
 396         if ((exp) == NULL) {                                    \
 397                 CERROR("obd_" #op ": NULL export\n");           \
 398                 RETURN(-ENODEV);                                \
 399         }                                                       \
 400         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 401                 CERROR("obd_" #op ": cleaned up obd\n");        \
 402                 RETURN(-EOPNOTSUPP);                            \
 403         }                                                       \
 404         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 405                 CERROR("obd_" #op ": dev %d no operation\n",    \
 406                        (exp)->exp_obd->obd_minor);              \
 407                 RETURN(-EOPNOTSUPP);                            \
 408         }                                                       \
 409 } while (0)
 410
 411 #define CTXT_CHECK_OP(ctxt, op, err)                                 \
 412 do {                                                                 \
 413         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {             \
 414                 if (err)                                             \
 415                         CERROR("lop_" #op ": dev %d no operation\n", \
 416                                ctxt->loc_obd->obd_minor);            \
 417                 RETURN(err);                                         \
 418         }                                                            \
 419 } while (0)
 420
 421 static inline int class_devno_max(void)
 422 {
 423         return MAX_OBD_DEVICES;
 424 }
 425
 426 static inline int obd_get_info(struct obd_export *exp, __u32 keylen,
 427                                void *key, __u32 *vallen, void *val,
 428                                struct lov_stripe_md *lsm)
 429 {
 430         int rc;
 431         ENTRY;
 432
 433         EXP_CHECK_DT_OP(exp, get_info);
 434         EXP_COUNTER_INCREMENT(exp, get_info);
 435
 436         rc = OBP(exp->exp_obd, get_info)(exp, keylen, key, vallen, val, lsm);
 437         RETURN(rc);
 438 }
 439
 440 static inline int obd_set_info_async(struct obd_export *exp, obd_count keylen,
 441                                      void *key, obd_count vallen, void *val,
 442                                      struct ptlrpc_request_set *set)
 443 {
 444         int rc;
 445         ENTRY;
 446
 447         EXP_CHECK_DT_OP(exp, set_info_async);
 448         EXP_COUNTER_INCREMENT(exp, set_info_async);
 449
 450         rc = OBP(exp->exp_obd, set_info_async)(exp, keylen, key, vallen, val,
 451                                                set);
 452         RETURN(rc);
 453 }
 454
 455 /*
 456  * obd-lu integration.
 457  *
 458  * Functionality is being moved into new lu_device-based layering, but some
 459  * pieces of configuration process are still based on obd devices.
 460  *
 461  * Specifically, lu_device_type_operations::ldto_device_alloc() methods fully
 462  * subsume ->o_setup() methods of obd devices they replace. The same for
 463  * lu_device_operations::ldo_process_config() and ->o_process_config(). As a
 464  * result, obd_setup() and obd_process_config() branch and call one XOR
 465  * another.
 466  *
 467  * Yet neither lu_device_type_operations::ldto_device_fini() nor
 468  * lu_device_type_operations::ldto_device_free() fully implement the
 469  * functionality of ->o_precleanup() and ->o_cleanup() they override. Hence,
 470  * obd_precleanup() and obd_cleanup() call both lu_device and obd operations.
 471  */
 472
 473 #define DECLARE_LU_VARS(ldt, d)                 \
 474         struct lu_device_type *ldt;       \
 475         struct lu_device *d
 476
 477 static inline int obd_setup(struct obd_device *obd, struct lustre_cfg *cfg)
 478 {
 479         int rc;
 480         DECLARE_LU_VARS(ldt, d);
 481         ENTRY;
 482
 483         ldt = obd->obd_type->typ_lu;
 484         if (ldt != NULL) {
 485                 struct lu_context  session_ctx;
 486                 struct lu_env env;
 487                 lu_context_init(&session_ctx, LCT_SESSION);
 488                 session_ctx.lc_thread = NULL;
 489                 lu_context_enter(&session_ctx);
 490
 491                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 492                 if (rc == 0) {
 493                         env.le_ses = &session_ctx;
 494                         d = ldt->ldt_ops->ldto_device_alloc(&env, ldt, cfg);
 495                         lu_env_fini(&env);
 496                         if (!IS_ERR(d)) {
 497                                 obd->obd_lu_dev = d;
 498                                 d->ld_obd = obd;
 499                                 rc = 0;
 500                         } else
 501                                 rc = PTR_ERR(d);
 502                 }
 503                 lu_context_exit(&session_ctx);
 504                 lu_context_fini(&session_ctx);
 505
 506         } else {
 507                 OBD_CHECK_DT_OP(obd, setup, -EOPNOTSUPP);
 508                 OBD_COUNTER_INCREMENT(obd, setup);
 509                 rc = OBP(obd, setup)(obd, cfg);
 510         }
 511         RETURN(rc);
 512 }
 513
 514 static inline int obd_precleanup(struct obd_device *obd,
 515                                  enum obd_cleanup_stage cleanup_stage)
 516 {
 517         int rc;
 518         DECLARE_LU_VARS(ldt, d);
 519         ENTRY;
 520
 521         OBD_CHECK_DEV(obd);
 522         ldt = obd->obd_type->typ_lu;
 523         d = obd->obd_lu_dev;
 524         if (ldt != NULL && d != NULL) {
 525                 if (cleanup_stage == OBD_CLEANUP_EXPORTS) {
 526                         struct lu_env env;
 527
 528                         rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 529                         if (rc == 0) {
 530                                 ldt->ldt_ops->ldto_device_fini(&env, d);
 531                                 lu_env_fini(&env);
 532                         }
 533                 }
 534         }
 535         OBD_CHECK_DT_OP(obd, precleanup, 0);
 536         OBD_COUNTER_INCREMENT(obd, precleanup);
 537
 538         rc = OBP(obd, precleanup)(obd, cleanup_stage);
 539         RETURN(rc);
 540 }
 541
 542 static inline int obd_cleanup(struct obd_device *obd)
 543 {
 544         int rc;
 545         DECLARE_LU_VARS(ldt, d);
 546         ENTRY;
 547
 548         OBD_CHECK_DEV(obd);
 549
 550         ldt = obd->obd_type->typ_lu;
 551         d = obd->obd_lu_dev;
 552         if (ldt != NULL && d != NULL) {
 553                 struct lu_env env;
 554
 555                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 556                 if (rc == 0) {
 557                         ldt->ldt_ops->ldto_device_free(&env, d);
 558                         lu_env_fini(&env);
 559                         obd->obd_lu_dev = NULL;
 560                 }
 561         }
 562         OBD_CHECK_DT_OP(obd, cleanup, 0);
 563         OBD_COUNTER_INCREMENT(obd, cleanup);
 564
 565         rc = OBP(obd, cleanup)(obd);
 566         RETURN(rc);
 567 }
 568
 569 static inline int
 570 obd_process_config(struct obd_device *obd, int datalen, void *data)
 571 {
 572         int rc;
 573         DECLARE_LU_VARS(ldt, d);
 574         ENTRY;
 575
 576         OBD_CHECK_DEV(obd);
 577
 578         obd->obd_process_conf = 1;
 579         ldt = obd->obd_type->typ_lu;
 580         d = obd->obd_lu_dev;
 581         if (ldt != NULL && d != NULL) {
 582                 struct lu_env env;
 583
 584                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 585                 if (rc == 0) {
 586                         rc = d->ld_ops->ldo_process_config(&env, d, data);
 587                         lu_env_fini(&env);
 588                 }
 589         } else {
 590                 OBD_CHECK_DT_OP(obd, process_config, -EOPNOTSUPP);
 591                 rc = OBP(obd, process_config)(obd, datalen, data);
 592         }
 593         OBD_COUNTER_INCREMENT(obd, process_config);
 594         obd->obd_process_conf = 0;
 595
 596         RETURN(rc);
 597 }
 598
 599 /* Pack an in-memory MD struct for storage on disk.
 600  * Returns +ve size of packed MD (0 for free), or -ve error.
 601  *
 602  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 603  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 604  * If @*disk_tgt == NULL, it will be allocated
 605  */
 606 static inline int obd_packmd(struct obd_export *exp,
 607                              struct lov_mds_md **disk_tgt,
 608                              struct lov_stripe_md *mem_src)
 609 {
 610         int rc;
 611         ENTRY;
 612
 613         EXP_CHECK_DT_OP(exp, packmd);
 614         EXP_COUNTER_INCREMENT(exp, packmd);
 615
 616         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 617         RETURN(rc);
 618 }
 619
 620 static inline int obd_size_diskmd(struct obd_export *exp,
 621                                   struct lov_stripe_md *mem_src)
 622 {
 623         return obd_packmd(exp, NULL, mem_src);
 624 }
 625
 626 /* helper functions */
 627 static inline int obd_alloc_diskmd(struct obd_export *exp,
 628                                    struct lov_mds_md **disk_tgt)
 629 {
 630         LASSERT(disk_tgt);
 631         LASSERT(*disk_tgt == NULL);
 632         return obd_packmd(exp, disk_tgt, NULL);
 633 }
 634
 635 static inline int obd_free_diskmd(struct obd_export *exp,
 636                                   struct lov_mds_md **disk_tgt)
 637 {
 638         LASSERT(disk_tgt);
 639         LASSERT(*disk_tgt);
 640         return obd_packmd(exp, disk_tgt, NULL);
 641 }
 642
 643 /* Unpack an MD struct from disk to in-memory format.
 644  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 645  *
 646  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 647  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 648  * If @*mem_tgt == NULL, it will be allocated
 649  */
 650 static inline int obd_unpackmd(struct obd_export *exp,
 651                                struct lov_stripe_md **mem_tgt,
 652                                struct lov_mds_md *disk_src,
 653                                int disk_len)
 654 {
 655         int rc;
 656         ENTRY;
 657
 658         EXP_CHECK_DT_OP(exp, unpackmd);
 659         EXP_COUNTER_INCREMENT(exp, unpackmd);
 660
 661         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 662         RETURN(rc);
 663 }
 664
 665 /* helper functions */
 666 static inline int obd_alloc_memmd(struct obd_export *exp,
 667                                   struct lov_stripe_md **mem_tgt)
 668 {
 669         LASSERT(mem_tgt);
 670         LASSERT(*mem_tgt == NULL);
 671         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 672 }
 673
 674 static inline int obd_free_memmd(struct obd_export *exp,
 675                                  struct lov_stripe_md **mem_tgt)
 676 {
 677         int rc;
 678
 679         LASSERT(mem_tgt);
 680         LASSERT(*mem_tgt);
 681         rc = obd_unpackmd(exp, mem_tgt, NULL, 0);
 682         *mem_tgt = NULL;
 683         return rc;
 684 }
 685
 686 static inline int obd_checkmd(struct obd_export *exp,
 687                               struct obd_export *md_exp,
 688                               struct lov_stripe_md *mem_tgt)
 689 {
 690         int rc;
 691         ENTRY;
 692
 693         EXP_CHECK_DT_OP(exp, checkmd);
 694         EXP_COUNTER_INCREMENT(exp, checkmd);
 695
 696         rc = OBP(exp->exp_obd, checkmd)(exp, md_exp, mem_tgt);
 697         RETURN(rc);
 698 }
 699
 700 static inline int obd_precreate(struct obd_export *exp)
 701 {
 702         int rc;
 703         ENTRY;
 704
 705         EXP_CHECK_DT_OP(exp, precreate);
 706         OBD_COUNTER_INCREMENT(exp->exp_obd, precreate);
 707
 708         rc = OBP(exp->exp_obd, precreate)(exp);
 709         RETURN(rc);
 710 }
 711
 712 static inline int obd_create_async(struct obd_export *exp,
 713                                    struct obd_info *oinfo,
 714                                    struct lov_stripe_md **ea,
 715                                    struct obd_trans_info *oti)
 716 {
 717         int rc;
 718         ENTRY;
 719
 720         EXP_CHECK_DT_OP(exp, create_async);
 721         EXP_COUNTER_INCREMENT(exp, create_async);
 722
 723         rc = OBP(exp->exp_obd, create_async)(exp, oinfo, ea, oti);
 724         RETURN(rc);
 725 }
 726
 727 static inline int obd_create(struct obd_export *exp, struct obdo *obdo,
 728                              struct lov_stripe_md **ea,
 729                              struct obd_trans_info *oti)
 730 {
 731         int rc;
 732         ENTRY;
 733
 734         EXP_CHECK_DT_OP(exp, create);
 735         EXP_COUNTER_INCREMENT(exp, create);
 736
 737         rc = OBP(exp->exp_obd, create)(exp, obdo, ea, oti);
 738         RETURN(rc);
 739 }
 740
 741 static inline int obd_destroy(struct obd_export *exp, struct obdo *obdo,
 742                               struct lov_stripe_md *ea,
 743                               struct obd_trans_info *oti,
 744                               struct obd_export *md_exp, void *capa)
 745 {
 746         int rc;
 747         ENTRY;
 748
 749         EXP_CHECK_DT_OP(exp, destroy);
 750         EXP_COUNTER_INCREMENT(exp, destroy);
 751
 752         rc = OBP(exp->exp_obd, destroy)(exp, obdo, ea, oti, md_exp, capa);
 753         RETURN(rc);
 754 }
 755
 756 static inline int obd_getattr(struct obd_export *exp, struct obd_info *oinfo)
 757 {
 758         int rc;
 759         ENTRY;
 760
 761         EXP_CHECK_DT_OP(exp, getattr);
 762         EXP_COUNTER_INCREMENT(exp, getattr);
 763
 764         rc = OBP(exp->exp_obd, getattr)(exp, oinfo);
 765         RETURN(rc);
 766 }
 767
 768 static inline int obd_getattr_async(struct obd_export *exp,
 769                                     struct obd_info *oinfo,
 770                                     struct ptlrpc_request_set *set)
 771 {
 772         int rc;
 773         ENTRY;
 774
 775         EXP_CHECK_DT_OP(exp, getattr_async);
 776         EXP_COUNTER_INCREMENT(exp, getattr_async);
 777
 778         rc = OBP(exp->exp_obd, getattr_async)(exp, oinfo, set);
 779         RETURN(rc);
 780 }
 781
 782 static inline int obd_setattr(struct obd_export *exp, struct obd_info *oinfo,
 783                               struct obd_trans_info *oti)
 784 {
 785         int rc;
 786         ENTRY;
 787
 788         EXP_CHECK_DT_OP(exp, setattr);
 789         EXP_COUNTER_INCREMENT(exp, setattr);
 790
 791         rc = OBP(exp->exp_obd, setattr)(exp, oinfo, oti);
 792         RETURN(rc);
 793 }
 794
 795 /* This performs all the requests set init/wait/destroy actions. */
 796 static inline int obd_setattr_rqset(struct obd_export *exp,
 797                                     struct obd_info *oinfo,
 798                                     struct obd_trans_info *oti)
 799 {
 800         struct ptlrpc_request_set *set = NULL;
 801         int rc;
 802         ENTRY;
 803
 804         EXP_CHECK_DT_OP(exp, setattr_async);
 805         EXP_COUNTER_INCREMENT(exp, setattr_async);
 806
 807         set =  ptlrpc_prep_set();
 808         if (set == NULL)
 809                 RETURN(-ENOMEM);
 810
 811         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 812         if (rc == 0)
 813                 rc = ptlrpc_set_wait(set);
 814         ptlrpc_set_destroy(set);
 815         RETURN(rc);
 816 }
 817
 818 /* This adds all the requests into @set if @set != NULL, otherwise
 819    all requests are sent asynchronously without waiting for response. */
 820 static inline int obd_setattr_async(struct obd_export *exp,
 821                                     struct obd_info *oinfo,
 822                                     struct obd_trans_info *oti,
 823                                     struct ptlrpc_request_set *set)
 824 {
 825         int rc;
 826         ENTRY;
 827
 828         EXP_CHECK_DT_OP(exp, setattr_async);
 829         EXP_COUNTER_INCREMENT(exp, setattr_async);
 830
 831         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 832         RETURN(rc);
 833 }
 834
 835 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 836                                int priority)
 837 {
 838         struct obd_device *obd = imp->imp_obd;
 839         int rc;
 840         ENTRY;
 841
 842         OBD_CHECK_DEV_ACTIVE(obd);
 843         OBD_CHECK_DT_OP(obd, add_conn, -EOPNOTSUPP);
 844         OBD_COUNTER_INCREMENT(obd, add_conn);
 845
 846         rc = OBP(obd, add_conn)(imp, uuid, priority);
 847         RETURN(rc);
 848 }
 849
 850 static inline int obd_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
 851 {
 852         struct obd_device *obd = imp->imp_obd;
 853         int rc;
 854         ENTRY;
 855
 856         OBD_CHECK_DEV_ACTIVE(obd);
 857         OBD_CHECK_DT_OP(obd, del_conn, -EOPNOTSUPP);
 858         OBD_COUNTER_INCREMENT(obd, del_conn);
 859
 860         rc = OBP(obd, del_conn)(imp, uuid);
 861         RETURN(rc);
 862 }
 863
 864 static inline struct obd_uuid *obd_get_uuid(struct obd_export *exp)
 865 {
 866         struct obd_uuid *uuid;
 867         ENTRY;
 868
 869         OBD_CHECK_DT_OP(exp->exp_obd, get_uuid, NULL);
 870         EXP_COUNTER_INCREMENT(exp, get_uuid);
 871
 872         uuid = OBP(exp->exp_obd, get_uuid)(exp);
 873         RETURN(uuid);
 874 }
 875
 876 static inline int obd_connect(const struct lu_env *env,
 877                               struct obd_export **exp,struct obd_device *obd,
 878                               struct obd_uuid *cluuid,
 879                               struct obd_connect_data *d,
 880                               void *localdata)
 881 {
 882         int rc;
 883         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 884                                                    * check */
 885         ENTRY;
 886
 887         OBD_CHECK_DEV_ACTIVE(obd);
 888         OBD_CHECK_DT_OP(obd, connect, -EOPNOTSUPP);
 889         OBD_COUNTER_INCREMENT(obd, connect);
 890
 891         rc = OBP(obd, connect)(env, exp, obd, cluuid, d, localdata);
 892         /* check that only subset is granted */
 893         LASSERT(ergo(d != NULL,
 894                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 895         RETURN(rc);
 896 }
 897
 898 static inline int obd_reconnect(const struct lu_env *env,
 899                                 struct obd_export *exp,
 900                                 struct obd_device *obd,
 901                                 struct obd_uuid *cluuid,
 902                                 struct obd_connect_data *d,
 903                                 void *localdata)
 904 {
 905         int rc;
 906         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 907                                                    * check */
 908
 909         ENTRY;
 910
 911         OBD_CHECK_DEV_ACTIVE(obd);
 912         OBD_CHECK_DT_OP(obd, reconnect, 0);
 913         OBD_COUNTER_INCREMENT(obd, reconnect);
 914
 915         rc = OBP(obd, reconnect)(env, exp, obd, cluuid, d, localdata);
 916         /* check that only subset is granted */
 917         LASSERT(ergo(d != NULL,
 918                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 919         RETURN(rc);
 920 }
 921
 922 static inline int obd_disconnect(struct obd_export *exp)
 923 {
 924         int rc;
 925         ENTRY;
 926
 927         EXP_CHECK_DT_OP(exp, disconnect);
 928         EXP_COUNTER_INCREMENT(exp, disconnect);
 929
 930         rc = OBP(exp->exp_obd, disconnect)(exp);
 931         RETURN(rc);
 932 }
 933
 934 static inline int obd_fid_init(struct obd_export *exp)
 935 {
 936         int rc;
 937         ENTRY;
 938
 939         OBD_CHECK_DT_OP(exp->exp_obd, fid_init, 0);
 940         EXP_COUNTER_INCREMENT(exp, fid_init);
 941
 942         rc = OBP(exp->exp_obd, fid_init)(exp);
 943         RETURN(rc);
 944 }
 945
 946 static inline int obd_fid_fini(struct obd_export *exp)
 947 {
 948         int rc;
 949         ENTRY;
 950
 951         OBD_CHECK_DT_OP(exp->exp_obd, fid_fini, 0);
 952         EXP_COUNTER_INCREMENT(exp, fid_fini);
 953
 954         rc = OBP(exp->exp_obd, fid_fini)(exp);
 955         RETURN(rc);
 956 }
 957
 958 static inline int obd_fid_alloc(struct obd_export *exp,
 959                                 struct lu_fid *fid,
 960                                 struct md_op_data *op_data)
 961 {
 962         int rc;
 963         ENTRY;
 964
 965         EXP_CHECK_DT_OP(exp, fid_alloc);
 966         EXP_COUNTER_INCREMENT(exp, fid_alloc);
 967
 968         rc = OBP(exp->exp_obd, fid_alloc)(exp, fid, op_data);
 969         RETURN(rc);
 970 }
 971
 972 static inline int obd_fid_delete(struct obd_export *exp,
 973                                  const struct lu_fid *fid)
 974 {
 975         int rc;
 976         ENTRY;
 977
 978         EXP_CHECK_DT_OP(exp, fid_delete);
 979         EXP_COUNTER_INCREMENT(exp, fid_delete);
 980
 981         rc = OBP(exp->exp_obd, fid_delete)(exp, fid);
 982         RETURN(rc);
 983 }
 984
 985 static inline int obd_ping(struct obd_export *exp)
 986 {
 987         int rc;
 988         ENTRY;
 989
 990         OBD_CHECK_DT_OP(exp->exp_obd, ping, 0);
 991         EXP_COUNTER_INCREMENT(exp, ping);
 992
 993         rc = OBP(exp->exp_obd, ping)(exp);
 994         RETURN(rc);
 995 }
 996
 997 static inline int obd_pool_new(struct obd_device *obd, char *poolname)
 998 {
 999         int rc;
1000         ENTRY;
1001
1002         OBD_CHECK_DT_OP(obd, pool_new, -EOPNOTSUPP);
1003         OBD_COUNTER_INCREMENT(obd, pool_new);
1004
1005         rc = OBP(obd, pool_new)(obd, poolname);
1006         RETURN(rc);
1007 }
1008
1009 static inline int obd_pool_del(struct obd_device *obd, char *poolname)
1010 {
1011         int rc;
1012         ENTRY;
1013
1014         OBD_CHECK_DT_OP(obd, pool_del, -EOPNOTSUPP);
1015         OBD_COUNTER_INCREMENT(obd, pool_del);
1016
1017         rc = OBP(obd, pool_del)(obd, poolname);
1018         RETURN(rc);
1019 }
1020
1021 static inline int obd_pool_add(struct obd_device *obd, char *poolname, char *ostname)
1022 {
1023         int rc;
1024         ENTRY;
1025
1026         OBD_CHECK_DT_OP(obd, pool_add, -EOPNOTSUPP);
1027         OBD_COUNTER_INCREMENT(obd, pool_add);
1028
1029         rc = OBP(obd, pool_add)(obd, poolname, ostname);
1030         RETURN(rc);
1031 }
1032
1033 static inline int obd_pool_rem(struct obd_device *obd, char *poolname, char *ostname)
1034 {
1035         int rc;
1036         ENTRY;
1037
1038         OBD_CHECK_DT_OP(obd, pool_rem, -EOPNOTSUPP);
1039         OBD_COUNTER_INCREMENT(obd, pool_rem);
1040
1041         rc = OBP(obd, pool_rem)(obd, poolname, ostname);
1042         RETURN(rc);
1043 }
1044
1045 static inline void obd_getref(struct obd_device *obd)
1046 {
1047         ENTRY;
1048         if (OBT(obd) && OBP(obd, getref)) {
1049                 OBD_COUNTER_INCREMENT(obd, getref);
1050                 OBP(obd, getref)(obd);
1051         }
1052         EXIT;
1053 }
1054
1055 static inline void obd_putref(struct obd_device *obd)
1056 {
1057         ENTRY;
1058         if (OBT(obd) && OBP(obd, putref)) {
1059                 OBD_COUNTER_INCREMENT(obd, putref);
1060                 OBP(obd, putref)(obd);
1061         }
1062         EXIT;
1063 }
1064
1065 static inline int obd_init_export(struct obd_export *exp)
1066 {
1067         int rc = 0;
1068
1069         ENTRY;
1070         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
1071             OBP((exp)->exp_obd, init_export))
1072                 rc = OBP(exp->exp_obd, init_export)(exp);
1073         RETURN(rc);
1074 }
1075
1076 static inline int obd_destroy_export(struct obd_export *exp)
1077 {
1078         ENTRY;
1079         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
1080             OBP((exp)->exp_obd, destroy_export))
1081                 OBP(exp->exp_obd, destroy_export)(exp);
1082         RETURN(0);
1083 }
1084
1085 static inline int obd_extent_calc(struct obd_export *exp,
1086                                   struct lov_stripe_md *md,
1087                                   int cmd, obd_off *offset)
1088 {
1089         int rc;
1090         ENTRY;
1091         EXP_CHECK_DT_OP(exp, extent_calc);
1092         rc = OBP(exp->exp_obd, extent_calc)(exp, md, cmd, offset);
1093         RETURN(rc);
1094 }
1095
1096 static inline struct dentry *
1097 obd_lvfs_fid2dentry(struct obd_export *exp, __u64 id_ino, __u32 gen, __u64 gr)
1098 {
1099         LASSERT(exp->exp_obd);
1100
1101         return lvfs_fid2dentry(&exp->exp_obd->obd_lvfs_ctxt, id_ino, gen, gr,
1102                                exp->exp_obd);
1103 }
1104
1105 static inline int
1106 obd_lvfs_open_llog(struct obd_export *exp, __u64 id_ino, struct dentry *dentry)
1107 {
1108         LASSERT(exp->exp_obd);
1109         CERROR("FIXME what's the story here?  This needs to be an obd fn?\n");
1110 #if 0
1111         return lvfs_open_llog(&exp->exp_obd->obd_lvfs_ctxt, id_ino,
1112                               dentry, exp->exp_obd);
1113 #endif
1114         return 0;
1115 }
1116
1117 #ifndef time_before
1118 #define time_before(t1, t2) ((long)t2 - (long)t1 > 0)
1119 #endif
1120
1121 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1122  * If the cache is older than @max_age we will get a new value from the
1123  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1124 static inline int obd_statfs_async(struct obd_device *obd,
1125                                    struct obd_info *oinfo,
1126                                    __u64 max_age,
1127                                    struct ptlrpc_request_set *rqset)
1128 {
1129         int rc = 0;
1130         ENTRY;
1131
1132         if (obd == NULL)
1133                 RETURN(-EINVAL);
1134
1135         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1136         OBD_COUNTER_INCREMENT(obd, statfs);
1137
1138         CDEBUG(D_SUPER, "%s: osfs %p age "LPU64", max_age "LPU64"\n",
1139                obd->obd_name, &obd->obd_osfs, obd->obd_osfs_age, max_age);
1140         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1141                 rc = OBP(obd, statfs_async)(obd, oinfo, max_age, rqset);
1142         } else {
1143                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1144                        " objects "LPU64"/"LPU64"\n",
1145                        obd->obd_name, &obd->obd_osfs,
1146                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1147                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1148                 spin_lock(&obd->obd_osfs_lock);
1149                 memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
1150                 spin_unlock(&obd->obd_osfs_lock);
1151                 oinfo->oi_flags |= OBD_STATFS_FROM_CACHE;
1152                 if (oinfo->oi_cb_up)
1153                         oinfo->oi_cb_up(oinfo, 0);
1154         }
1155         RETURN(rc);
1156 }
1157
1158 static inline int obd_statfs_rqset(struct obd_device *obd,
1159                                    struct obd_statfs *osfs, __u64 max_age,
1160                                    __u32 flags)
1161 {
1162         struct ptlrpc_request_set *set = NULL;
1163         struct obd_info oinfo = { { { 0 } } };
1164         int rc = 0;
1165         ENTRY;
1166
1167         set =  ptlrpc_prep_set();
1168         if (set == NULL)
1169                 RETURN(-ENOMEM);
1170
1171         oinfo.oi_osfs = osfs;
1172         oinfo.oi_flags = flags;
1173         rc = obd_statfs_async(obd, &oinfo, max_age, set);
1174         if (rc == 0)
1175                 rc = ptlrpc_set_wait(set);
1176         ptlrpc_set_destroy(set);
1177         RETURN(rc);
1178 }
1179
1180 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1181  * If the cache is older than @max_age we will get a new value from the
1182  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1183 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
1184                              __u64 max_age, __u32 flags)
1185 {
1186         int rc = 0;
1187         ENTRY;
1188
1189         if (obd == NULL)
1190                 RETURN(-EINVAL);
1191
1192         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1193         OBD_COUNTER_INCREMENT(obd, statfs);
1194
1195         CDEBUG(D_SUPER, "osfs "LPU64", max_age "LPU64"\n",
1196                obd->obd_osfs_age, max_age);
1197         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1198                 rc = OBP(obd, statfs)(obd, osfs, max_age, flags);
1199                 if (rc == 0) {
1200                         spin_lock(&obd->obd_osfs_lock);
1201                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
1202                         obd->obd_osfs_age = cfs_time_current_64();
1203                         spin_unlock(&obd->obd_osfs_lock);
1204                 }
1205         } else {
1206                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1207                        " objects "LPU64"/"LPU64"\n",
1208                        obd->obd_name, &obd->obd_osfs,
1209                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1210                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1211                 spin_lock(&obd->obd_osfs_lock);
1212                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
1213                 spin_unlock(&obd->obd_osfs_lock);
1214         }
1215         RETURN(rc);
1216 }
1217
1218 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
1219                            struct lov_stripe_md *ea, obd_size start,
1220                            obd_size end, void *capa)
1221 {
1222         int rc;
1223         ENTRY;
1224
1225         OBD_CHECK_DT_OP(exp->exp_obd, sync, -EOPNOTSUPP);
1226         EXP_COUNTER_INCREMENT(exp, sync);
1227
1228         rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end, capa);
1229         RETURN(rc);
1230 }
1231
1232 static inline int obd_punch_rqset(struct obd_export *exp,
1233                                   struct obd_info *oinfo,
1234                                   struct obd_trans_info *oti)
1235 {
1236         struct ptlrpc_request_set *set = NULL;
1237         int rc;
1238         ENTRY;
1239
1240         EXP_CHECK_DT_OP(exp, punch);
1241         EXP_COUNTER_INCREMENT(exp, punch);
1242
1243         set =  ptlrpc_prep_set();
1244         if (set == NULL)
1245                 RETURN(-ENOMEM);
1246
1247         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, set);
1248         if (rc == 0)
1249                 rc = ptlrpc_set_wait(set);
1250         ptlrpc_set_destroy(set);
1251         RETURN(rc);
1252 }
1253
1254 static inline int obd_punch(struct obd_export *exp, struct obd_info *oinfo,
1255                             struct obd_trans_info *oti,
1256                             struct ptlrpc_request_set *rqset)
1257 {
1258         int rc;
1259         ENTRY;
1260
1261         EXP_CHECK_DT_OP(exp, punch);
1262         EXP_COUNTER_INCREMENT(exp, punch);
1263
1264         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, rqset);
1265         RETURN(rc);
1266 }
1267
1268 static inline int obd_brw(int cmd, struct obd_export *exp,
1269                           struct obd_info *oinfo, obd_count oa_bufs,
1270                           struct brw_page *pg, struct obd_trans_info *oti)
1271 {
1272         int rc;
1273         ENTRY;
1274
1275         EXP_CHECK_DT_OP(exp, brw);
1276         EXP_COUNTER_INCREMENT(exp, brw);
1277
1278         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
1279                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
1280                        "or OBD_BRW_CHECK\n");
1281                 LBUG();
1282         }
1283
1284         rc = OBP(exp->exp_obd, brw)(cmd, exp, oinfo, oa_bufs, pg, oti);
1285         RETURN(rc);
1286 }
1287
1288 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
1289                              int objcount, struct obd_ioobj *obj,
1290                              struct niobuf_remote *remote, int *pages,
1291                              struct niobuf_local *local,
1292                              struct obd_trans_info *oti,
1293                              struct lustre_capa *capa)
1294 {
1295         int rc;
1296         ENTRY;
1297
1298         EXP_CHECK_DT_OP(exp, preprw);
1299         EXP_COUNTER_INCREMENT(exp, preprw);
1300
1301         rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, remote,
1302                                        pages, local, oti, capa);
1303         RETURN(rc);
1304 }
1305
1306 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
1307                                int objcount, struct obd_ioobj *obj,
1308                                struct niobuf_remote *rnb, int pages,
1309                                struct niobuf_local *local,
1310                                struct obd_trans_info *oti, int rc)
1311 {
1312         ENTRY;
1313
1314         EXP_CHECK_DT_OP(exp, commitrw);
1315         EXP_COUNTER_INCREMENT(exp, commitrw);
1316
1317         rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj,
1318                                          rnb, pages, local, oti, rc);
1319         RETURN(rc);
1320 }
1321
1322 static inline int obd_merge_lvb(struct obd_export *exp,
1323                                 struct lov_stripe_md *lsm,
1324                                 struct ost_lvb *lvb, int kms_only)
1325 {
1326         int rc;
1327         ENTRY;
1328
1329         EXP_CHECK_DT_OP(exp, merge_lvb);
1330         EXP_COUNTER_INCREMENT(exp, merge_lvb);
1331
1332         rc = OBP(exp->exp_obd, merge_lvb)(exp, lsm, lvb, kms_only);
1333         RETURN(rc);
1334 }
1335
1336 static inline int obd_adjust_kms(struct obd_export *exp,
1337                                  struct lov_stripe_md *lsm, obd_off size,
1338                                  int shrink)
1339 {
1340         int rc;
1341         ENTRY;
1342
1343         EXP_CHECK_DT_OP(exp, adjust_kms);
1344         EXP_COUNTER_INCREMENT(exp, adjust_kms);
1345
1346         rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
1347         RETURN(rc);
1348 }
1349
1350 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1351                                 int len, void *karg, void *uarg)
1352 {
1353         int rc;
1354         ENTRY;
1355
1356         EXP_CHECK_DT_OP(exp, iocontrol);
1357         EXP_COUNTER_INCREMENT(exp, iocontrol);
1358
1359         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1360         RETURN(rc);
1361 }
1362
1363 static inline int obd_enqueue_rqset(struct obd_export *exp,
1364                                     struct obd_info *oinfo,
1365                                     struct ldlm_enqueue_info *einfo)
1366 {
1367         struct ptlrpc_request_set *set = NULL;
1368         int rc;
1369         ENTRY;
1370
1371         EXP_CHECK_DT_OP(exp, enqueue);
1372         EXP_COUNTER_INCREMENT(exp, enqueue);
1373
1374         set =  ptlrpc_prep_set();
1375         if (set == NULL)
1376                 RETURN(-ENOMEM);
1377
1378         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1379         if (rc == 0)
1380                 rc = ptlrpc_set_wait(set);
1381         ptlrpc_set_destroy(set);
1382         RETURN(rc);
1383 }
1384
1385 static inline int obd_enqueue(struct obd_export *exp,
1386                               struct obd_info *oinfo,
1387                               struct ldlm_enqueue_info *einfo,
1388                               struct ptlrpc_request_set *set)
1389 {
1390         int rc;
1391         ENTRY;
1392
1393         EXP_CHECK_DT_OP(exp, enqueue);
1394         EXP_COUNTER_INCREMENT(exp, enqueue);
1395
1396         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1397         RETURN(rc);
1398 }
1399
1400 static inline int obd_change_cbdata(struct obd_export *exp,
1401                                     struct lov_stripe_md *lsm,
1402                                     ldlm_iterator_t it, void *data)
1403 {
1404         int rc;
1405         ENTRY;
1406
1407         EXP_CHECK_DT_OP(exp, change_cbdata);
1408         EXP_COUNTER_INCREMENT(exp, change_cbdata);
1409
1410         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1411         RETURN(rc);
1412 }
1413
1414 static inline int obd_cancel(struct obd_export *exp,
1415                              struct lov_stripe_md *ea, __u32 mode,
1416                              struct lustre_handle *lockh)
1417 {
1418         int rc;
1419         ENTRY;
1420
1421         EXP_CHECK_DT_OP(exp, cancel);
1422         EXP_COUNTER_INCREMENT(exp, cancel);
1423
1424         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1425         RETURN(rc);
1426 }
1427
1428 static inline int obd_cancel_unused(struct obd_export *exp,
1429                                     struct lov_stripe_md *ea,
1430                                     int flags, void *opaque)
1431 {
1432         int rc;
1433         ENTRY;
1434
1435         EXP_CHECK_DT_OP(exp, cancel_unused);
1436         EXP_COUNTER_INCREMENT(exp, cancel_unused);
1437
1438         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1439         RETURN(rc);
1440 }
1441
1442 static inline int obd_pin(struct obd_export *exp, const struct lu_fid *fid,
1443                           struct obd_capa *oc, struct obd_client_handle *handle,
1444                           int flag)
1445 {
1446         int rc;
1447         ENTRY;
1448
1449         EXP_CHECK_DT_OP(exp, pin);
1450         EXP_COUNTER_INCREMENT(exp, pin);
1451
1452         rc = OBP(exp->exp_obd, pin)(exp, fid, oc, handle, flag);
1453         RETURN(rc);
1454 }
1455
1456 static inline int obd_unpin(struct obd_export *exp,
1457                             struct obd_client_handle *handle, int flag)
1458 {
1459         int rc;
1460         ENTRY;
1461
1462         EXP_CHECK_DT_OP(exp, unpin);
1463         EXP_COUNTER_INCREMENT(exp, unpin);
1464
1465         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1466         RETURN(rc);
1467 }
1468
1469
1470 static inline void obd_import_event(struct obd_device *obd,
1471                                     struct obd_import *imp,
1472                                     enum obd_import_event event)
1473 {
1474         ENTRY;
1475         if (!obd) {
1476                 CERROR("NULL device\n");
1477                 EXIT;
1478                 return;
1479         }
1480         if (obd->obd_set_up && OBP(obd, import_event)) {
1481                 OBD_COUNTER_INCREMENT(obd, import_event);
1482                 OBP(obd, import_event)(obd, imp, event);
1483         }
1484         EXIT;
1485 }
1486
1487 static inline int obd_llog_connect(struct obd_export *exp,
1488                                    struct llogd_conn_body *body)
1489 {
1490         int rc;
1491         ENTRY;
1492
1493         OBD_CHECK_DT_OP(exp->exp_obd, llog_connect, 0);
1494         EXP_COUNTER_INCREMENT(exp, llog_connect);
1495
1496         rc = OBP(exp->exp_obd, llog_connect)(exp, body);
1497         RETURN(rc);
1498 }
1499
1500
1501 static inline int obd_notify(struct obd_device *obd,
1502                              struct obd_device *watched,
1503                              enum obd_notify_event ev,
1504                              void *data)
1505 {
1506         int rc;
1507         ENTRY;
1508         OBD_CHECK_DEV(obd);
1509
1510         /* the check for async_recov is a complete hack - I'm hereby
1511            overloading the meaning to also mean "this was called from
1512            mds_postsetup".  I know that my mds is able to handle notifies
1513            by this point, and it needs to get them to execute mds_postrecov. */
1514         if (!obd->obd_set_up && !obd->obd_async_recov) {
1515                 CDEBUG(D_HA, "obd %s not set up\n", obd->obd_name);
1516                 RETURN(-EINVAL);
1517         }
1518
1519         if (!OBP(obd, notify)) {
1520                 CERROR("obd %s has no notify handler\n", obd->obd_name);
1521                 RETURN(-ENOSYS);
1522         }
1523
1524         OBD_COUNTER_INCREMENT(obd, notify);
1525         rc = OBP(obd, notify)(obd, watched, ev, data);
1526         RETURN(rc);
1527 }
1528
1529 static inline int obd_notify_observer(struct obd_device *observer,
1530                                       struct obd_device *observed,
1531                                       enum obd_notify_event ev,
1532                                       void *data)
1533 {
1534         int rc1;
1535         int rc2;
1536
1537         struct obd_notify_upcall *onu;
1538
1539         if (observer->obd_observer)
1540                 rc1 = obd_notify(observer->obd_observer, observed, ev, data);
1541         else
1542                 rc1 = 0;
1543         /*
1544          * Also, call non-obd listener, if any
1545          */
1546         onu = &observer->obd_upcall;
1547         if (onu->onu_upcall != NULL)
1548                 rc2 = onu->onu_upcall(observer, observed, ev,
1549                                       onu->onu_owner, NULL);
1550         else
1551                 rc2 = 0;
1552
1553         return rc1 ? rc1 : rc2;
1554 }
1555
1556 static inline int obd_quotacheck(struct obd_export *exp,
1557                                  struct obd_quotactl *oqctl)
1558 {
1559         int rc;
1560         ENTRY;
1561
1562         EXP_CHECK_DT_OP(exp, quotacheck);
1563         EXP_COUNTER_INCREMENT(exp, quotacheck);
1564
1565         rc = OBP(exp->exp_obd, quotacheck)(exp->exp_obd, exp, oqctl);
1566         RETURN(rc);
1567 }
1568
1569 static inline int obd_quotactl(struct obd_export *exp,
1570                                struct obd_quotactl *oqctl)
1571 {
1572         int rc;
1573         ENTRY;
1574
1575         EXP_CHECK_DT_OP(exp, quotactl);
1576         EXP_COUNTER_INCREMENT(exp, quotactl);
1577
1578         rc = OBP(exp->exp_obd, quotactl)(exp->exp_obd, exp, oqctl);
1579         RETURN(rc);
1580 }
1581
1582 static inline int obd_quota_adjust_qunit(struct obd_export *exp,
1583                                          struct quota_adjust_qunit *oqaq,
1584                                          struct lustre_quota_ctxt *qctxt)
1585 {
1586 #if defined(LPROCFS) && defined(HAVE_QUOTA_SUPPORT)
1587         struct timeval work_start;
1588         struct timeval work_end;
1589         long timediff;
1590 #endif
1591         int rc;
1592         ENTRY;
1593
1594 #if defined(LPROCFS) && defined(HAVE_QUOTA_SUPPORT)
1595         if (qctxt)
1596                 do_gettimeofday(&work_start);
1597 #endif
1598         EXP_CHECK_DT_OP(exp, quota_adjust_qunit);
1599         EXP_COUNTER_INCREMENT(exp, quota_adjust_qunit);
1600
1601         rc = OBP(exp->exp_obd, quota_adjust_qunit)(exp, oqaq, qctxt);
1602
1603 #if defined(LPROCFS) && defined(HAVE_QUOTA_SUPPORT)
1604         if (qctxt) {
1605                 do_gettimeofday(&work_end);
1606                 timediff = cfs_timeval_sub(&work_end, &work_start, NULL);
1607                 lprocfs_counter_add(qctxt->lqc_stats, LQUOTA_ADJUST_QUNIT,
1608                                     timediff);
1609         }
1610 #endif
1611         RETURN(rc);
1612 }
1613
1614 static inline int obd_health_check(struct obd_device *obd)
1615 {
1616         /* returns: 0 on healthy
1617          *         >0 on unhealthy + reason code/flag
1618          *            however the only suppored reason == 1 right now
1619          *            We'll need to define some better reasons
1620          *            or flags in the future.
1621          *         <0 on error
1622          */
1623         int rc;
1624         ENTRY;
1625
1626         /* don't use EXP_CHECK_DT_OP, because NULL method is normal here */
1627         if (obd == NULL || !OBT(obd)) {
1628                 CERROR("cleaned up obd\n");
1629                 RETURN(-EOPNOTSUPP);
1630         }
1631         if (!obd->obd_set_up || obd->obd_stopping)
1632                 RETURN(0);
1633         if (!OBP(obd, health_check))
1634                 RETURN(0);
1635
1636         rc = OBP(obd, health_check)(obd);
1637         RETURN(rc);
1638 }
1639
1640 static inline int obd_register_observer(struct obd_device *obd,
1641                                         struct obd_device *observer)
1642 {
1643         ENTRY;
1644         OBD_CHECK_DEV(obd);
1645         if (obd->obd_observer && observer)
1646                 RETURN(-EALREADY);
1647         obd->obd_observer = observer;
1648         RETURN(0);
1649 }
1650
1651 #if 0
1652 static inline int obd_register_page_removal_cb(struct obd_export *exp,
1653                                                obd_page_removal_cb_t cb,
1654                                                obd_pin_extent_cb pin_cb)
1655 {
1656         int rc;
1657         ENTRY;
1658
1659         OBD_CHECK_DT_OP(exp->exp_obd, register_page_removal_cb, 0);
1660         OBD_COUNTER_INCREMENT(exp->exp_obd, register_page_removal_cb);
1661
1662         rc = OBP(exp->exp_obd, register_page_removal_cb)(exp, cb, pin_cb);
1663         RETURN(rc);
1664 }
1665
1666 static inline int obd_unregister_page_removal_cb(struct obd_export *exp,
1667                                                  obd_page_removal_cb_t cb)
1668 {
1669         int rc;
1670         ENTRY;
1671
1672         OBD_CHECK_DT_OP(exp->exp_obd, unregister_page_removal_cb, 0);
1673         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_page_removal_cb);
1674
1675         rc = OBP(exp->exp_obd, unregister_page_removal_cb)(exp, cb);
1676         RETURN(rc);
1677 }
1678
1679 static inline int obd_register_lock_cancel_cb(struct obd_export *exp,
1680                                               obd_lock_cancel_cb cb)
1681 {
1682         int rc;
1683         ENTRY;
1684
1685         OBD_CHECK_DT_OP(exp->exp_obd, register_lock_cancel_cb, 0);
1686         OBD_COUNTER_INCREMENT(exp->exp_obd, register_lock_cancel_cb);
1687
1688         rc = OBP(exp->exp_obd, register_lock_cancel_cb)(exp, cb);
1689         RETURN(rc);
1690 }
1691
1692 static inline int obd_unregister_lock_cancel_cb(struct obd_export *exp,
1693                                                  obd_lock_cancel_cb cb)
1694 {
1695         int rc;
1696         ENTRY;
1697
1698         OBD_CHECK_DT_OP(exp->exp_obd, unregister_lock_cancel_cb, 0);
1699         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_lock_cancel_cb);
1700
1701         rc = OBP(exp->exp_obd, unregister_lock_cancel_cb)(exp, cb);
1702         RETURN(rc);
1703 }
1704 #endif
1705
1706 /* metadata helpers */
1707 static inline int md_getstatus(struct obd_export *exp,
1708                                struct lu_fid *fid, struct obd_capa **pc)
1709 {
1710         int rc;
1711         ENTRY;
1712
1713         EXP_CHECK_MD_OP(exp, getstatus);
1714         EXP_MD_COUNTER_INCREMENT(exp, getstatus);
1715         rc = MDP(exp->exp_obd, getstatus)(exp, fid, pc);
1716         RETURN(rc);
1717 }
1718
1719 static inline int md_getattr(struct obd_export *exp, const struct lu_fid *fid,
1720                              struct obd_capa *oc, obd_valid valid, int ea_size,
1721                              struct ptlrpc_request **request)
1722 {
1723         int rc;
1724         ENTRY;
1725         EXP_CHECK_MD_OP(exp, getattr);
1726         EXP_MD_COUNTER_INCREMENT(exp, getattr);
1727         rc = MDP(exp->exp_obd, getattr)(exp, fid, oc, valid,
1728                                         ea_size, request);
1729         RETURN(rc);
1730 }
1731
1732 static inline int md_change_cbdata(struct obd_export *exp,
1733                                    const struct lu_fid *fid,
1734                                    ldlm_iterator_t it, void *data)
1735 {
1736         int rc;
1737         ENTRY;
1738         EXP_CHECK_MD_OP(exp, change_cbdata);
1739         EXP_MD_COUNTER_INCREMENT(exp, change_cbdata);
1740         rc = MDP(exp->exp_obd, change_cbdata)(exp, fid, it, data);
1741         RETURN(rc);
1742 }
1743
1744 static inline int md_close(struct obd_export *exp, struct md_op_data *op_data,
1745                            struct md_open_data *mod,
1746                            struct ptlrpc_request **request)
1747 {
1748         int rc;
1749         ENTRY;
1750         EXP_CHECK_MD_OP(exp, close);
1751         EXP_MD_COUNTER_INCREMENT(exp, close);
1752         rc = MDP(exp->exp_obd, close)(exp, op_data, mod, request);
1753         RETURN(rc);
1754 }
1755
1756 static inline int md_create(struct obd_export *exp, struct md_op_data *op_data,
1757                             const void *data, int datalen, int mode, __u32 uid,
1758                             __u32 gid, cfs_cap_t cap_effective, __u64 rdev,
1759                             struct ptlrpc_request **request)
1760 {
1761         int rc;
1762         ENTRY;
1763         EXP_CHECK_MD_OP(exp, create);
1764         EXP_MD_COUNTER_INCREMENT(exp, create);
1765         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1766                                        uid, gid, cap_effective, rdev, request);
1767         RETURN(rc);
1768 }
1769
1770 static inline int md_done_writing(struct obd_export *exp,
1771                                   struct md_op_data *op_data,
1772                                   struct md_open_data *mod)
1773 {
1774         int rc;
1775         ENTRY;
1776         EXP_CHECK_MD_OP(exp, done_writing);
1777         EXP_MD_COUNTER_INCREMENT(exp, done_writing);
1778         rc = MDP(exp->exp_obd, done_writing)(exp, op_data, mod);
1779         RETURN(rc);
1780 }
1781
1782 static inline int md_enqueue(struct obd_export *exp,
1783                              struct ldlm_enqueue_info *einfo,
1784                              struct lookup_intent *it,
1785                              struct md_op_data *op_data,
1786                              struct lustre_handle *lockh,
1787                              void *lmm, int lmmsize,
1788                              struct ptlrpc_request **req,
1789                              int extra_lock_flags)
1790 {
1791         int rc;
1792         ENTRY;
1793         EXP_CHECK_MD_OP(exp, enqueue);
1794         EXP_MD_COUNTER_INCREMENT(exp, enqueue);
1795         rc = MDP(exp->exp_obd, enqueue)(exp, einfo, it, op_data, lockh,
1796                                         lmm, lmmsize, req, extra_lock_flags);
1797         RETURN(rc);
1798 }
1799
1800 static inline int md_getattr_name(struct obd_export *exp,
1801                                   const struct lu_fid *fid, struct obd_capa *oc,
1802                                   const char *name, int namelen,
1803                                   obd_valid valid, int ea_size, __u32 suppgid,
1804                                   struct ptlrpc_request **request)
1805 {
1806         int rc;
1807         ENTRY;
1808         EXP_CHECK_MD_OP(exp, getattr_name);
1809         EXP_MD_COUNTER_INCREMENT(exp, getattr_name);
1810         rc = MDP(exp->exp_obd, getattr_name)(exp, fid, oc, name, namelen,
1811                                              valid, ea_size, suppgid, request);
1812         RETURN(rc);
1813 }
1814
1815 static inline int md_intent_lock(struct obd_export *exp,
1816                                  struct md_op_data *op_data, void *lmm,
1817                                  int lmmsize, struct lookup_intent *it,
1818                                  int flags, struct ptlrpc_request **reqp,
1819                                  ldlm_blocking_callback cb_blocking,
1820                                  int extra_lock_flags)
1821 {
1822         int rc;
1823         ENTRY;
1824         EXP_CHECK_MD_OP(exp, intent_lock);
1825         EXP_MD_COUNTER_INCREMENT(exp, intent_lock);
1826         rc = MDP(exp->exp_obd, intent_lock)(exp, op_data, lmm, lmmsize,
1827                                             it, flags, reqp, cb_blocking,
1828                                             extra_lock_flags);
1829         RETURN(rc);
1830 }
1831
1832 static inline int md_link(struct obd_export *exp, struct md_op_data *op_data,
1833                           struct ptlrpc_request **request)
1834 {
1835         int rc;
1836         ENTRY;
1837         EXP_CHECK_MD_OP(exp, link);
1838         EXP_MD_COUNTER_INCREMENT(exp, link);
1839         rc = MDP(exp->exp_obd, link)(exp, op_data, request);
1840         RETURN(rc);
1841 }
1842
1843 static inline int md_rename(struct obd_export *exp, struct md_op_data *op_data,
1844                             const char *old, int oldlen, const char *new,
1845                             int newlen, struct ptlrpc_request **request)
1846 {
1847         int rc;
1848         ENTRY;
1849         EXP_CHECK_MD_OP(exp, rename);
1850         EXP_MD_COUNTER_INCREMENT(exp, rename);
1851         rc = MDP(exp->exp_obd, rename)(exp, op_data, old, oldlen, new,
1852                                        newlen, request);
1853         RETURN(rc);
1854 }
1855
1856 static inline int md_is_subdir(struct obd_export *exp,
1857                                const struct lu_fid *pfid,
1858                                const struct lu_fid *cfid,
1859                                struct ptlrpc_request **request)
1860 {
1861         int rc;
1862         ENTRY;
1863         EXP_CHECK_MD_OP(exp, is_subdir);
1864         EXP_MD_COUNTER_INCREMENT(exp, is_subdir);
1865         rc = MDP(exp->exp_obd, is_subdir)(exp, pfid, cfid, request);
1866         RETURN(rc);
1867 }
1868
1869 static inline int md_setattr(struct obd_export *exp, struct md_op_data *op_data,
1870                              void *ea, int ealen, void *ea2, int ea2len,
1871                              struct ptlrpc_request **request,
1872                              struct md_open_data **mod)
1873 {
1874         int rc;
1875         ENTRY;
1876         EXP_CHECK_MD_OP(exp, setattr);
1877         EXP_MD_COUNTER_INCREMENT(exp, setattr);
1878         rc = MDP(exp->exp_obd, setattr)(exp, op_data, ea, ealen,
1879                                         ea2, ea2len, request, mod);
1880         RETURN(rc);
1881 }
1882
1883 static inline int md_sync(struct obd_export *exp, const struct lu_fid *fid,
1884                           struct obd_capa *oc, struct ptlrpc_request **request)
1885 {
1886         int rc;
1887         ENTRY;
1888         EXP_CHECK_MD_OP(exp, sync);
1889         EXP_MD_COUNTER_INCREMENT(exp, sync);
1890         rc = MDP(exp->exp_obd, sync)(exp, fid, oc, request);
1891         RETURN(rc);
1892 }
1893
1894 static inline int md_readpage(struct obd_export *exp, const struct lu_fid *fid,
1895                               struct obd_capa *oc, __u64 offset,
1896                               struct page *page,
1897                               struct ptlrpc_request **request)
1898 {
1899         int rc;
1900         ENTRY;
1901         EXP_CHECK_MD_OP(exp, readpage);
1902         EXP_MD_COUNTER_INCREMENT(exp, readpage);
1903         rc = MDP(exp->exp_obd, readpage)(exp, fid, oc, offset, page, request);
1904         RETURN(rc);
1905 }
1906
1907 static inline int md_unlink(struct obd_export *exp, struct md_op_data *op_data,
1908                             struct ptlrpc_request **request)
1909 {
1910         int rc;
1911         ENTRY;
1912         EXP_CHECK_MD_OP(exp, unlink);
1913         EXP_MD_COUNTER_INCREMENT(exp, unlink);
1914         rc = MDP(exp->exp_obd, unlink)(exp, op_data, request);
1915         RETURN(rc);
1916 }
1917
1918 static inline int md_get_lustre_md(struct obd_export *exp,
1919                                    struct ptlrpc_request *req,
1920                                    struct obd_export *dt_exp,
1921                                    struct obd_export *md_exp,
1922                                    struct lustre_md *md)
1923 {
1924         ENTRY;
1925         EXP_CHECK_MD_OP(exp, get_lustre_md);
1926         EXP_MD_COUNTER_INCREMENT(exp, get_lustre_md);
1927         RETURN(MDP(exp->exp_obd, get_lustre_md)(exp, req, dt_exp, md_exp, md));
1928 }
1929
1930 static inline int md_free_lustre_md(struct obd_export *exp,
1931                                     struct lustre_md *md)
1932 {
1933         ENTRY;
1934         EXP_CHECK_MD_OP(exp, free_lustre_md);
1935         EXP_MD_COUNTER_INCREMENT(exp, free_lustre_md);
1936         RETURN(MDP(exp->exp_obd, free_lustre_md)(exp, md));
1937 }
1938
1939 static inline int md_setxattr(struct obd_export *exp,
1940                               const struct lu_fid *fid, struct obd_capa *oc,
1941                               obd_valid valid, const char *name,
1942                               const char *input, int input_size,
1943                               int output_size, int flags, __u32 suppgid,
1944                               struct ptlrpc_request **request)
1945 {
1946         ENTRY;
1947         EXP_CHECK_MD_OP(exp, setxattr);
1948         EXP_MD_COUNTER_INCREMENT(exp, setxattr);
1949         RETURN(MDP(exp->exp_obd, setxattr)(exp, fid, oc, valid, name, input,
1950                                            input_size, output_size, flags,
1951                                            suppgid, request));
1952 }
1953
1954 static inline int md_getxattr(struct obd_export *exp,
1955                               const struct lu_fid *fid, struct obd_capa *oc,
1956                               obd_valid valid, const char *name,
1957                               const char *input, int input_size,
1958                               int output_size, int flags,
1959                               struct ptlrpc_request **request)
1960 {
1961         ENTRY;
1962         EXP_CHECK_MD_OP(exp, getxattr);
1963         EXP_MD_COUNTER_INCREMENT(exp, getxattr);
1964         RETURN(MDP(exp->exp_obd, getxattr)(exp, fid, oc, valid, name, input,
1965                                            input_size, output_size, flags,
1966                                            request));
1967 }
1968
1969 static inline int md_set_open_replay_data(struct obd_export *exp,
1970                                           struct obd_client_handle *och,
1971                                           struct ptlrpc_request *open_req)
1972 {
1973         ENTRY;
1974         EXP_CHECK_MD_OP(exp, set_open_replay_data);
1975         EXP_MD_COUNTER_INCREMENT(exp, set_open_replay_data);
1976         RETURN(MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req));
1977 }
1978
1979 static inline int md_clear_open_replay_data(struct obd_export *exp,
1980                                             struct obd_client_handle *och)
1981 {
1982         ENTRY;
1983         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
1984         EXP_MD_COUNTER_INCREMENT(exp, clear_open_replay_data);
1985         RETURN(MDP(exp->exp_obd, clear_open_replay_data)(exp, och));
1986 }
1987
1988 static inline int md_set_lock_data(struct obd_export *exp,
1989                                    __u64 *lockh, void *data, __u32 *bits)
1990 {
1991         ENTRY;
1992         EXP_CHECK_MD_OP(exp, set_lock_data);
1993         EXP_MD_COUNTER_INCREMENT(exp, set_lock_data);
1994         RETURN(MDP(exp->exp_obd, set_lock_data)(exp, lockh, data, bits));
1995 }
1996
1997 static inline int md_cancel_unused(struct obd_export *exp,
1998                                    const struct lu_fid *fid,
1999                                    ldlm_policy_data_t *policy,
2000                                    ldlm_mode_t mode, int flags, void *opaque)
2001 {
2002         int rc;
2003         ENTRY;
2004
2005         EXP_CHECK_MD_OP(exp, cancel_unused);
2006         EXP_MD_COUNTER_INCREMENT(exp, cancel_unused);
2007
2008         rc = MDP(exp->exp_obd, cancel_unused)(exp, fid, policy, mode,
2009                                               flags, opaque);
2010         RETURN(rc);
2011 }
2012
2013 static inline ldlm_mode_t md_lock_match(struct obd_export *exp, int flags,
2014                                         const struct lu_fid *fid,
2015                                         ldlm_type_t type,
2016                                         ldlm_policy_data_t *policy,
2017                                         ldlm_mode_t mode,
2018                                         struct lustre_handle *lockh)
2019 {
2020         ENTRY;
2021         EXP_CHECK_MD_OP(exp, lock_match);
2022         EXP_MD_COUNTER_INCREMENT(exp, lock_match);
2023         RETURN(MDP(exp->exp_obd, lock_match)(exp, flags, fid, type,
2024                                              policy, mode, lockh));
2025 }
2026
2027 static inline int md_init_ea_size(struct obd_export *exp, int easize,
2028                                   int def_asize, int cookiesize)
2029 {
2030         ENTRY;
2031         EXP_CHECK_MD_OP(exp, init_ea_size);
2032         EXP_MD_COUNTER_INCREMENT(exp, init_ea_size);
2033         RETURN(MDP(exp->exp_obd, init_ea_size)(exp, easize, def_asize,
2034                                                cookiesize));
2035 }
2036
2037 static inline int md_get_remote_perm(struct obd_export *exp,
2038                                      const struct lu_fid *fid,
2039                                      struct obd_capa *oc, __u32 suppgid,
2040                                      struct ptlrpc_request **request)
2041 {
2042         ENTRY;
2043         EXP_CHECK_MD_OP(exp, get_remote_perm);
2044         EXP_MD_COUNTER_INCREMENT(exp, get_remote_perm);
2045         RETURN(MDP(exp->exp_obd, get_remote_perm)(exp, fid, oc, suppgid,
2046                                                   request));
2047 }
2048
2049 static inline int md_renew_capa(struct obd_export *exp, struct obd_capa *ocapa,
2050                                 renew_capa_cb_t cb)
2051 {
2052         int rc;
2053         ENTRY;
2054         EXP_CHECK_MD_OP(exp, renew_capa);
2055         EXP_MD_COUNTER_INCREMENT(exp, renew_capa);
2056         rc = MDP(exp->exp_obd, renew_capa)(exp, ocapa, cb);
2057         RETURN(rc);
2058 }
2059
2060 static inline int md_unpack_capa(struct obd_export *exp,
2061                                  struct ptlrpc_request *req,
2062                                  const struct req_msg_field *field,
2063                                  struct obd_capa **oc)
2064 {
2065         int rc;
2066         ENTRY;
2067         EXP_CHECK_MD_OP(exp, unpack_capa);
2068         EXP_MD_COUNTER_INCREMENT(exp, unpack_capa);
2069         rc = MDP(exp->exp_obd, unpack_capa)(exp, req, field, oc);
2070         RETURN(rc);
2071 }
2072
2073 static inline int md_intent_getattr_async(struct obd_export *exp,
2074                                           struct md_enqueue_info *minfo,
2075                                           struct ldlm_enqueue_info *einfo)
2076 {
2077         int rc;
2078         ENTRY;
2079         EXP_CHECK_MD_OP(exp, intent_getattr_async);
2080         EXP_MD_COUNTER_INCREMENT(exp, intent_getattr_async);
2081         rc = MDP(exp->exp_obd, intent_getattr_async)(exp, minfo, einfo);
2082         RETURN(rc);
2083 }
2084
2085 static inline int md_revalidate_lock(struct obd_export *exp,
2086                                      struct lookup_intent *it,
2087                                      struct lu_fid *fid)
2088 {
2089         int rc;
2090         ENTRY;
2091         EXP_CHECK_MD_OP(exp, revalidate_lock);
2092         EXP_MD_COUNTER_INCREMENT(exp, revalidate_lock);
2093         rc = MDP(exp->exp_obd, revalidate_lock)(exp, it, fid);
2094         RETURN(rc);
2095 }
2096
2097
2098 /* OBD Metadata Support */
2099
2100 extern int obd_init_caches(void);
2101 extern void obd_cleanup_caches(void);
2102
2103 /* support routines */
2104 extern cfs_mem_cache_t *obdo_cachep;
2105
2106 #define OBDO_ALLOC(ptr)                                                       \
2107 do {                                                                          \
2108         OBD_SLAB_ALLOC_PTR((ptr), obdo_cachep);                               \
2109 } while(0)
2110
2111 #define OBDO_FREE(ptr)                                                        \
2112 do {                                                                          \
2113         OBD_SLAB_FREE_PTR((ptr), obdo_cachep);                                \
2114 } while(0)
2115
2116
2117 static inline void obdo2fid(struct obdo *oa, struct lu_fid *fid)
2118 {
2119         /* something here */
2120 }
2121
2122 static inline void fid2obdo(struct lu_fid *fid, struct obdo *oa)
2123 {
2124         /* something here */
2125 }
2126
2127 /* I'm as embarrassed about this as you are.
2128  *
2129  * <shaver> // XXX do not look into _superhack with remaining eye
2130  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
2131 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
2132
2133 /* sysctl.c */
2134 extern void obd_sysctl_init (void);
2135 extern void obd_sysctl_clean (void);
2136
2137 /* uuid.c  */
2138 typedef __u8 class_uuid_t[16];
2139 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
2140
2141 /* lustre_peer.c    */
2142 int lustre_uuid_to_peer(const char *uuid, lnet_nid_t *peer_nid, int index);
2143 int class_add_uuid(const char *uuid, __u64 nid);
2144 int class_del_uuid (const char *uuid);
2145 void class_init_uuidlist(void);
2146 void class_exit_uuidlist(void);
2147
2148 /* mea.c */
2149 int mea_name2idx(struct lmv_stripe_md *mea, const char *name, int namelen);
2150 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
2151
2152 /* prng.c */
2153 void ll_generate_random_uuid(class_uuid_t uuid_out);
2154
2155 #endif /* __LINUX_OBD_CLASS_H */