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,
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  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 char *obd_export_nid2str(struct obd_export *exp);
  94
  95 int obd_export_evict_by_nid(struct obd_device *obd, const char *nid);
  96 int obd_export_evict_by_uuid(struct obd_device *obd, const char *uuid);
  97
  98 int obd_zombie_impexp_init(void);
  99 void obd_zombie_impexp_stop(void);
 100 void obd_zombie_impexp_cull(void);
 101 void obd_zombie_barrier(void);
 102
 103 /* obd_config.c */
 104 int class_process_config(struct lustre_cfg *lcfg);
 105 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
 106                              struct lustre_cfg *lcfg, void *data);
 107 int class_attach(struct lustre_cfg *lcfg);
 108 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
 109 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg);
 110 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg);
 111 struct obd_device *class_incref(struct obd_device *obd,
 112                                 const char *scope, const void *source);
 113 void class_decref(struct obd_device *obd,
 114                   const char *scope, const void *source);
 115
 116 /*obdecho*/
 117 #ifdef LPROCFS
 118 extern void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars);
 119 #else
 120 static inline void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars)
 121 {
 122         memset(lvars, 0, sizeof(*lvars));
 123 }
 124 #endif
 125
 126 #define CFG_F_START     0x01   /* Set when we start updating from a log */
 127 #define CFG_F_MARKER    0x02   /* We are within a maker */
 128 #define CFG_F_SKIP      0x04   /* We should ignore this cfg command */
 129 #define CFG_F_COMPAT146 0x08   /* Allow old-style logs */
 130 #define CFG_F_EXCLUDE   0x10   /* OST exclusion list */
 131
 132 /* Passed as data param to class_config_parse_llog */
 133 struct config_llog_instance {
 134         char *              cfg_instance;
 135         struct super_block *cfg_sb;
 136         struct obd_uuid     cfg_uuid;
 137         int                 cfg_last_idx; /* for partial llog processing */
 138         int                 cfg_flags;
 139 };
 140 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
 141                             struct config_llog_instance *cfg);
 142 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
 143                            struct config_llog_instance *cfg);
 144
 145 /* list of active configuration logs  */
 146 struct config_llog_data {
 147         char               *cld_logname;
 148         struct ldlm_res_id  cld_resid;
 149         struct config_llog_instance cld_cfg;
 150         struct list_head    cld_list_chain;
 151         atomic_t            cld_refcount;
 152         struct obd_export  *cld_mgcexp;
 153         unsigned int        cld_stopping:1, /* we were told to stop watching */
 154                             cld_lostlock:1; /* lock not requeued */
 155 };
 156
 157 struct lustre_profile {
 158         struct list_head lp_list;
 159         char            *lp_profile;
 160         char            *lp_dt;
 161         char            *lp_md;
 162 };
 163
 164 struct lustre_profile *class_get_profile(const char * prof);
 165 void class_del_profile(const char *prof);
 166 void class_del_profiles(void);
 167
 168 #define class_export_rpc_get(exp)                                       \
 169 ({                                                                      \
 170         atomic_inc(&(exp)->exp_rpc_count);                              \
 171         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",    \
 172                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 173         class_export_get(exp);                                          \
 174 })
 175
 176 #define class_export_rpc_put(exp)                                       \
 177 ({                                                                      \
 178         atomic_dec(&(exp)->exp_rpc_count);                              \
 179         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",    \
 180                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 181         class_export_put(exp);                                          \
 182 })
 183
 184 /* genops.c */
 185 struct obd_export *class_export_get(struct obd_export *exp);
 186 void class_export_put(struct obd_export *exp);
 187 struct obd_export *class_new_export(struct obd_device *obddev,
 188                                     struct obd_uuid *cluuid);
 189 void class_unlink_export(struct obd_export *exp);
 190
 191 struct obd_import *class_import_get(struct obd_import *);
 192 void class_import_put(struct obd_import *);
 193 struct obd_import *class_new_import(struct obd_device *obd);
 194 void class_destroy_import(struct obd_import *exp);
 195
 196 struct obd_type *class_search_type(const char *name);
 197 struct obd_type *class_get_type(const char *name);
 198 void class_put_type(struct obd_type *type);
 199 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 200                   struct obd_uuid *cluuid);
 201 int class_disconnect(struct obd_export *exp);
 202 void class_fail_export(struct obd_export *exp);
 203 void class_disconnect_exports(struct obd_device *obddev);
 204 int class_disconnect_stale_exports(struct obd_device *,
 205                                     int (*test_export)(struct obd_export *));
 206 int class_manual_cleanup(struct obd_device *obd);
 207
 208 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_flag valid);
 209 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
 210 void obdo_from_iattr(struct obdo *oa, struct iattr *attr,
 211                      unsigned int ia_valid);
 212 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, obd_flag valid);
 213 void md_from_obdo(struct md_op_data *op_data, struct obdo *oa, obd_flag valid);
 214 void obdo_from_md(struct obdo *oa, struct md_op_data *op_data,
 215                   unsigned int valid);
 216
 217 #define OBT(dev)        (dev)->obd_type
 218 #define OBP(dev, op)    (dev)->obd_type->typ_dt_ops->o_ ## op
 219 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
 220 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 221
 222 /* Ensure obd_setup: used for cleanup which must be called
 223    while obd is stopping */
 224 #define OBD_CHECK_DEV(obd)                                      \
 225 do {                                                            \
 226         if (!(obd)) {                                           \
 227                 CERROR("NULL device\n");                        \
 228                 RETURN(-ENODEV);                                \
 229         }                                                       \
 230 } while (0)
 231
 232 /* ensure obd_setup and !obd_stopping */
 233 #define OBD_CHECK_DEV_ACTIVE(obd)                               \
 234 do {                                                            \
 235         OBD_CHECK_DEV(obd);                                     \
 236         if (!(obd)->obd_set_up || (obd)->obd_stopping) {        \
 237                 CERROR("Device %d not setup\n",                 \
 238                        (obd)->obd_minor);                       \
 239                 RETURN(-ENODEV);                                \
 240         }                                                       \
 241 } while (0)
 242
 243
 244 #ifdef LPROCFS
 245 #define OBD_COUNTER_OFFSET(op)                                  \
 246         ((offsetof(struct obd_ops, o_ ## op) -                  \
 247           offsetof(struct obd_ops, o_iocontrol))                \
 248          / sizeof(((struct obd_ops *)(0))->o_iocontrol))
 249
 250 #define OBD_COUNTER_INCREMENT(obdx, op)                           \
 251         if ((obdx)->obd_stats != NULL) {                          \
 252                 unsigned int coffset;                             \
 253                 coffset = (unsigned int)((obdx)->obd_cntr_base) + \
 254                         OBD_COUNTER_OFFSET(op);                   \
 255                 LASSERT(coffset < (obdx)->obd_stats->ls_num);     \
 256                 lprocfs_counter_incr((obdx)->obd_stats, coffset); \
 257         }
 258
 259 #define EXP_COUNTER_INCREMENT(export, op)                                    \
 260         if ((export)->exp_obd->obd_stats != NULL) {                          \
 261                 unsigned int coffset;                                        \
 262                 coffset = (unsigned int)((export)->exp_obd->obd_cntr_base) + \
 263                         OBD_COUNTER_OFFSET(op);                              \
 264                 LASSERT(coffset < (export)->exp_obd->obd_stats->ls_num);     \
 265                 lprocfs_counter_incr((export)->exp_obd->obd_stats, coffset); \
 266                 if ((export)->exp_nid_stats != NULL &&                       \
 267                     (export)->exp_nid_stats->nid_stats != NULL)              \
 268                         lprocfs_counter_incr(                                \
 269                                 (export)->exp_nid_stats->nid_stats, coffset);\
 270         }
 271
 272 #define MD_COUNTER_OFFSET(op)                                   \
 273         ((offsetof(struct md_ops, m_ ## op) -                   \
 274           offsetof(struct md_ops, m_getstatus))                 \
 275          / sizeof(((struct md_ops *)(0))->m_getstatus))
 276
 277 #define MD_COUNTER_INCREMENT(obdx, op)                           \
 278         if ((obd)->md_stats != NULL) {                           \
 279                 unsigned int coffset;                            \
 280                 coffset = (unsigned int)((obdx)->md_cntr_base) + \
 281                         MD_COUNTER_OFFSET(op);                   \
 282                 LASSERT(coffset < (obdx)->md_stats->ls_num);     \
 283                 lprocfs_counter_incr((obdx)->md_stats, coffset); \
 284         }
 285
 286 #define EXP_MD_COUNTER_INCREMENT(export, op)                                 \
 287         if ((export)->exp_obd->obd_stats != NULL) {                          \
 288                 unsigned int coffset;                                        \
 289                 coffset = (unsigned int)((export)->exp_obd->md_cntr_base) +  \
 290                         MD_COUNTER_OFFSET(op);                               \
 291                 LASSERT(coffset < (export)->exp_obd->md_stats->ls_num);      \
 292                 lprocfs_counter_incr((export)->exp_obd->md_stats, coffset);  \
 293                 if ((export)->exp_md_stats != NULL)                          \
 294                         lprocfs_counter_incr(                                \
 295                                 (export)->exp_md_stats, coffset);            \
 296         }
 297
 298 #else
 299 #define OBD_COUNTER_OFFSET(op)
 300 #define OBD_COUNTER_INCREMENT(obd, op)
 301 #define EXP_COUNTER_INCREMENT(exp, op)
 302 #define MD_COUNTER_INCREMENT(obd, op)
 303 #define EXP_MD_COUNTER_INCREMENT(exp, op)
 304 #endif
 305
 306 #define OBD_CHECK_MD_OP(obd, op, err)                           \
 307 do {                                                            \
 308         if (!OBT(obd) || !MDP((obd), op)) {                     \
 309                 if (err)                                        \
 310                         CERROR("md_" #op ": dev %s/%d no operation\n", \
 311                                obd->obd_name, obd->obd_minor);  \
 312                 RETURN(err);                                    \
 313         }                                                       \
 314 } while (0)
 315
 316 #define EXP_CHECK_MD_OP(exp, op)                                \
 317 do {                                                            \
 318         if ((exp) == NULL) {                                    \
 319                 CERROR("obd_" #op ": NULL export\n");           \
 320                 RETURN(-ENODEV);                                \
 321         }                                                       \
 322         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 323                 CERROR("obd_" #op ": cleaned up obd\n");        \
 324                 RETURN(-EOPNOTSUPP);                            \
 325         }                                                       \
 326         if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
 327                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 328                        (exp)->exp_obd->obd_name,                \
 329                        (exp)->exp_obd->obd_minor);              \
 330                 RETURN(-EOPNOTSUPP);                            \
 331         }                                                       \
 332 } while (0)
 333
 334
 335 #define OBD_CHECK_DT_OP(obd, op, err)                           \
 336 do {                                                            \
 337         if (!OBT(obd) || !OBP((obd), op)) {                     \
 338                 if (err)                                        \
 339                         CERROR("obd_" #op ": dev %d no operation\n",    \
 340                                obd->obd_minor);                 \
 341                 RETURN(err);                                    \
 342         }                                                       \
 343 } while (0)
 344
 345 #define EXP_CHECK_DT_OP(exp, op)                                \
 346 do {                                                            \
 347         if ((exp) == NULL) {                                    \
 348                 CERROR("obd_" #op ": NULL export\n");           \
 349                 RETURN(-ENODEV);                                \
 350         }                                                       \
 351         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 352                 CERROR("obd_" #op ": cleaned up obd\n");        \
 353                 RETURN(-EOPNOTSUPP);                            \
 354         }                                                       \
 355         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 356                 CERROR("obd_" #op ": dev %d no operation\n",    \
 357                        (exp)->exp_obd->obd_minor);              \
 358                 RETURN(-EOPNOTSUPP);                            \
 359         }                                                       \
 360 } while (0)
 361
 362 #define CTXT_CHECK_OP(ctxt, op, err)                                 \
 363 do {                                                                 \
 364         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {             \
 365                 if (err)                                             \
 366                         CERROR("lop_" #op ": dev %d no operation\n", \
 367                                ctxt->loc_obd->obd_minor);            \
 368                 RETURN(err);                                         \
 369         }                                                            \
 370 } while (0)
 371
 372 static inline int class_devno_max(void)
 373 {
 374         return MAX_OBD_DEVICES;
 375 }
 376
 377 static inline int obd_get_info(struct obd_export *exp, __u32 keylen,
 378                                void *key, __u32 *vallen, void *val,
 379                                struct lov_stripe_md *lsm)
 380 {
 381         int rc;
 382         ENTRY;
 383
 384         EXP_CHECK_DT_OP(exp, get_info);
 385         EXP_COUNTER_INCREMENT(exp, get_info);
 386
 387         rc = OBP(exp->exp_obd, get_info)(exp, keylen, key, vallen, val, lsm);
 388         RETURN(rc);
 389 }
 390
 391 static inline int obd_set_info_async(struct obd_export *exp, obd_count keylen,
 392                                      void *key, obd_count vallen, void *val,
 393                                      struct ptlrpc_request_set *set)
 394 {
 395         int rc;
 396         ENTRY;
 397
 398         EXP_CHECK_DT_OP(exp, set_info_async);
 399         EXP_COUNTER_INCREMENT(exp, set_info_async);
 400
 401         rc = OBP(exp->exp_obd, set_info_async)(exp, keylen, key, vallen, val,
 402                                                set);
 403         RETURN(rc);
 404 }
 405
 406 /*
 407  * obd-lu integration.
 408  *
 409  * Functionality is being moved into new lu_device-based layering, but some
 410  * pieces of configuration process are still based on obd devices.
 411  *
 412  * Specifically, lu_device_type_operations::ldto_device_alloc() methods fully
 413  * subsume ->o_setup() methods of obd devices they replace. The same for
 414  * lu_device_operations::ldo_process_config() and ->o_process_config(). As a
 415  * result, obd_setup() and obd_process_config() branch and call one XOR
 416  * another.
 417  *
 418  * Yet neither lu_device_type_operations::ldto_device_fini() nor
 419  * lu_device_type_operations::ldto_device_free() fully implement the
 420  * functionality of ->o_precleanup() and ->o_cleanup() they override. Hence,
 421  * obd_precleanup() and obd_cleanup() call both lu_device and obd operations.
 422  */
 423
 424 #define DECLARE_LU_VARS(ldt, d)                 \
 425         struct lu_device_type *ldt;       \
 426         struct lu_device *d
 427
 428 static inline int obd_setup(struct obd_device *obd, struct lustre_cfg *cfg)
 429 {
 430         int rc;
 431         DECLARE_LU_VARS(ldt, d);
 432         ENTRY;
 433
 434         ldt = obd->obd_type->typ_lu;
 435         if (ldt != NULL) {
 436                 struct lu_env env;
 437
 438                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 439                 if (rc == 0) {
 440                         d = ldt->ldt_ops->ldto_device_alloc(&env, ldt, cfg);
 441                         lu_env_fini(&env);
 442                         if (!IS_ERR(d)) {
 443                                 obd->obd_lu_dev = d;
 444                                 d->ld_obd = obd;
 445                                 rc = 0;
 446                         } else
 447                                 rc = PTR_ERR(d);
 448                 }
 449         } else {
 450                 OBD_CHECK_DT_OP(obd, setup, -EOPNOTSUPP);
 451                 OBD_COUNTER_INCREMENT(obd, setup);
 452                 rc = OBP(obd, setup)(obd, cfg);
 453         }
 454         RETURN(rc);
 455 }
 456
 457 static inline int obd_precleanup(struct obd_device *obd,
 458                                  enum obd_cleanup_stage cleanup_stage)
 459 {
 460         int rc;
 461         DECLARE_LU_VARS(ldt, d);
 462         ENTRY;
 463
 464         OBD_CHECK_DEV(obd);
 465         ldt = obd->obd_type->typ_lu;
 466         d = obd->obd_lu_dev;
 467         if (ldt != NULL && d != NULL) {
 468                 if (cleanup_stage == OBD_CLEANUP_EXPORTS) {
 469                         struct lu_env env;
 470
 471                         rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 472                         if (rc == 0) {
 473                                 ldt->ldt_ops->ldto_device_fini(&env, d);
 474                                 lu_env_fini(&env);
 475                         }
 476                 }
 477         }
 478         OBD_CHECK_DT_OP(obd, precleanup, 0);
 479         OBD_COUNTER_INCREMENT(obd, precleanup);
 480
 481         rc = OBP(obd, precleanup)(obd, cleanup_stage);
 482         RETURN(rc);
 483 }
 484
 485 static inline int obd_cleanup(struct obd_device *obd)
 486 {
 487         int rc;
 488         DECLARE_LU_VARS(ldt, d);
 489         ENTRY;
 490
 491         OBD_CHECK_DEV(obd);
 492
 493         ldt = obd->obd_type->typ_lu;
 494         d = obd->obd_lu_dev;
 495         if (ldt != NULL && d != NULL) {
 496                 struct lu_env env;
 497
 498                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 499                 if (rc == 0) {
 500                         ldt->ldt_ops->ldto_device_free(&env, d);
 501                         lu_env_fini(&env);
 502                         obd->obd_lu_dev = NULL;
 503                 }
 504         }
 505         OBD_CHECK_DT_OP(obd, cleanup, 0);
 506         OBD_COUNTER_INCREMENT(obd, cleanup);
 507
 508         rc = OBP(obd, cleanup)(obd);
 509         RETURN(rc);
 510 }
 511
 512 static inline int
 513 obd_process_config(struct obd_device *obd, int datalen, void *data)
 514 {
 515         int rc;
 516         DECLARE_LU_VARS(ldt, d);
 517         ENTRY;
 518
 519         OBD_CHECK_DEV(obd);
 520
 521         ldt = obd->obd_type->typ_lu;
 522         d = obd->obd_lu_dev;
 523         if (ldt != NULL && d != NULL) {
 524                 struct lu_env env;
 525
 526                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 527                 if (rc == 0) {
 528                         rc = d->ld_ops->ldo_process_config(&env, d, data);
 529                         lu_env_fini(&env);
 530                 }
 531         } else {
 532                 OBD_CHECK_DT_OP(obd, process_config, -EOPNOTSUPP);
 533                 rc = OBP(obd, process_config)(obd, datalen, data);
 534         }
 535         OBD_COUNTER_INCREMENT(obd, process_config);
 536
 537         RETURN(rc);
 538 }
 539
 540 /* Pack an in-memory MD struct for storage on disk.
 541  * Returns +ve size of packed MD (0 for free), or -ve error.
 542  *
 543  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 544  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 545  * If @*disk_tgt == NULL, it will be allocated
 546  */
 547 static inline int obd_packmd(struct obd_export *exp,
 548                              struct lov_mds_md **disk_tgt,
 549                              struct lov_stripe_md *mem_src)
 550 {
 551         int rc;
 552         ENTRY;
 553
 554         EXP_CHECK_DT_OP(exp, packmd);
 555         EXP_COUNTER_INCREMENT(exp, packmd);
 556
 557         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 558         RETURN(rc);
 559 }
 560
 561 static inline int obd_size_diskmd(struct obd_export *exp,
 562                                   struct lov_stripe_md *mem_src)
 563 {
 564         return obd_packmd(exp, NULL, mem_src);
 565 }
 566
 567 /* helper functions */
 568 static inline int obd_alloc_diskmd(struct obd_export *exp,
 569                                    struct lov_mds_md **disk_tgt)
 570 {
 571         LASSERT(disk_tgt);
 572         LASSERT(*disk_tgt == NULL);
 573         return obd_packmd(exp, disk_tgt, NULL);
 574 }
 575
 576 static inline int obd_free_diskmd(struct obd_export *exp,
 577                                   struct lov_mds_md **disk_tgt)
 578 {
 579         LASSERT(disk_tgt);
 580         LASSERT(*disk_tgt);
 581         return obd_packmd(exp, disk_tgt, NULL);
 582 }
 583
 584 /* Unpack an MD struct from disk to in-memory format.
 585  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 586  *
 587  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 588  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 589  * If @*mem_tgt == NULL, it will be allocated
 590  */
 591 static inline int obd_unpackmd(struct obd_export *exp,
 592                                struct lov_stripe_md **mem_tgt,
 593                                struct lov_mds_md *disk_src,
 594                                int disk_len)
 595 {
 596         int rc;
 597         ENTRY;
 598
 599         EXP_CHECK_DT_OP(exp, unpackmd);
 600         EXP_COUNTER_INCREMENT(exp, unpackmd);
 601
 602         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 603         RETURN(rc);
 604 }
 605
 606 /* helper functions */
 607 static inline int obd_alloc_memmd(struct obd_export *exp,
 608                                   struct lov_stripe_md **mem_tgt)
 609 {
 610         LASSERT(mem_tgt);
 611         LASSERT(*mem_tgt == NULL);
 612         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 613 }
 614
 615 static inline int obd_free_memmd(struct obd_export *exp,
 616                                  struct lov_stripe_md **mem_tgt)
 617 {
 618         int rc;
 619
 620         LASSERT(mem_tgt);
 621         LASSERT(*mem_tgt);
 622         rc = obd_unpackmd(exp, mem_tgt, NULL, 0);
 623         *mem_tgt = NULL;
 624         return rc;
 625 }
 626
 627 static inline int obd_checkmd(struct obd_export *exp,
 628                               struct obd_export *md_exp,
 629                               struct lov_stripe_md *mem_tgt)
 630 {
 631         int rc;
 632         ENTRY;
 633
 634         EXP_CHECK_DT_OP(exp, checkmd);
 635         EXP_COUNTER_INCREMENT(exp, checkmd);
 636
 637         rc = OBP(exp->exp_obd, checkmd)(exp, md_exp, mem_tgt);
 638         RETURN(rc);
 639 }
 640
 641 static inline int obd_precreate(struct obd_export *exp)
 642 {
 643         int rc;
 644         ENTRY;
 645
 646         EXP_CHECK_DT_OP(exp, precreate);
 647         OBD_COUNTER_INCREMENT(exp->exp_obd, precreate);
 648
 649         rc = OBP(exp->exp_obd, precreate)(exp);
 650         RETURN(rc);
 651 }
 652
 653 static inline int obd_create(struct obd_export *exp, struct obdo *obdo,
 654                              struct lov_stripe_md **ea,
 655                              struct obd_trans_info *oti)
 656 {
 657         int rc;
 658         ENTRY;
 659
 660         EXP_CHECK_DT_OP(exp, create);
 661         EXP_COUNTER_INCREMENT(exp, create);
 662
 663         rc = OBP(exp->exp_obd, create)(exp, obdo, ea, oti);
 664         RETURN(rc);
 665 }
 666
 667 static inline int obd_destroy(struct obd_export *exp, struct obdo *obdo,
 668                               struct lov_stripe_md *ea,
 669                               struct obd_trans_info *oti,
 670                               struct obd_export *md_exp, void *capa)
 671 {
 672         int rc;
 673         ENTRY;
 674
 675         EXP_CHECK_DT_OP(exp, destroy);
 676         EXP_COUNTER_INCREMENT(exp, destroy);
 677
 678         rc = OBP(exp->exp_obd, destroy)(exp, obdo, ea, oti, md_exp, capa);
 679         RETURN(rc);
 680 }
 681
 682 static inline int obd_getattr(struct obd_export *exp, struct obd_info *oinfo)
 683 {
 684         int rc;
 685         ENTRY;
 686
 687         EXP_CHECK_DT_OP(exp, getattr);
 688         EXP_COUNTER_INCREMENT(exp, getattr);
 689
 690         rc = OBP(exp->exp_obd, getattr)(exp, oinfo);
 691         RETURN(rc);
 692 }
 693
 694 static inline int obd_getattr_async(struct obd_export *exp,
 695                                     struct obd_info *oinfo,
 696                                     struct ptlrpc_request_set *set)
 697 {
 698         int rc;
 699         ENTRY;
 700
 701         EXP_CHECK_DT_OP(exp, getattr_async);
 702         EXP_COUNTER_INCREMENT(exp, getattr_async);
 703
 704         rc = OBP(exp->exp_obd, getattr_async)(exp, oinfo, set);
 705         RETURN(rc);
 706 }
 707
 708 static inline int obd_setattr(struct obd_export *exp, struct obd_info *oinfo,
 709                               struct obd_trans_info *oti)
 710 {
 711         int rc;
 712         ENTRY;
 713
 714         EXP_CHECK_DT_OP(exp, setattr);
 715         EXP_COUNTER_INCREMENT(exp, setattr);
 716
 717         rc = OBP(exp->exp_obd, setattr)(exp, oinfo, oti);
 718         RETURN(rc);
 719 }
 720
 721 /* This performs all the requests set init/wait/destroy actions. */
 722 static inline int obd_setattr_rqset(struct obd_export *exp,
 723                                     struct obd_info *oinfo,
 724                                     struct obd_trans_info *oti)
 725 {
 726         struct ptlrpc_request_set *set = NULL;
 727         int rc;
 728         ENTRY;
 729
 730         EXP_CHECK_DT_OP(exp, setattr_async);
 731         EXP_COUNTER_INCREMENT(exp, setattr_async);
 732
 733         set =  ptlrpc_prep_set();
 734         if (set == NULL)
 735                 RETURN(-ENOMEM);
 736
 737         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 738         if (rc == 0)
 739                 rc = ptlrpc_set_wait(set);
 740         ptlrpc_set_destroy(set);
 741         RETURN(rc);
 742 }
 743
 744 /* This adds all the requests into @set if @set != NULL, otherwise
 745    all requests are sent asynchronously without waiting for response. */
 746 static inline int obd_setattr_async(struct obd_export *exp,
 747                                     struct obd_info *oinfo,
 748                                     struct obd_trans_info *oti,
 749                                     struct ptlrpc_request_set *set)
 750 {
 751         int rc;
 752         ENTRY;
 753
 754         EXP_CHECK_DT_OP(exp, setattr_async);
 755         EXP_COUNTER_INCREMENT(exp, setattr_async);
 756
 757         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 758         RETURN(rc);
 759 }
 760
 761 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 762                                int priority)
 763 {
 764         struct obd_device *obd = imp->imp_obd;
 765         int rc;
 766         ENTRY;
 767
 768         OBD_CHECK_DEV_ACTIVE(obd);
 769         OBD_CHECK_DT_OP(obd, add_conn, -EOPNOTSUPP);
 770         OBD_COUNTER_INCREMENT(obd, add_conn);
 771
 772         rc = OBP(obd, add_conn)(imp, uuid, priority);
 773         RETURN(rc);
 774 }
 775
 776 static inline int obd_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
 777 {
 778         struct obd_device *obd = imp->imp_obd;
 779         int rc;
 780         ENTRY;
 781
 782         OBD_CHECK_DEV_ACTIVE(obd);
 783         OBD_CHECK_DT_OP(obd, del_conn, -EOPNOTSUPP);
 784         OBD_COUNTER_INCREMENT(obd, del_conn);
 785
 786         rc = OBP(obd, del_conn)(imp, uuid);
 787         RETURN(rc);
 788 }
 789
 790 static inline struct obd_uuid *obd_get_uuid(struct obd_export *exp)
 791 {
 792         struct obd_uuid *uuid;
 793         ENTRY;
 794
 795         OBD_CHECK_DT_OP(exp->exp_obd, get_uuid, NULL);
 796         EXP_COUNTER_INCREMENT(exp, get_uuid);
 797
 798         uuid = OBP(exp->exp_obd, get_uuid)(exp);
 799         RETURN(uuid);
 800 }
 801
 802 static inline int obd_connect(const struct lu_env *env,
 803                               struct lustre_handle *conn,struct obd_device *obd,
 804                               struct obd_uuid *cluuid,
 805                               struct obd_connect_data *d,
 806                               void *localdata)
 807 {
 808         int rc;
 809         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 810                                                    * check */
 811         ENTRY;
 812
 813         OBD_CHECK_DEV_ACTIVE(obd);
 814         OBD_CHECK_DT_OP(obd, connect, -EOPNOTSUPP);
 815         OBD_COUNTER_INCREMENT(obd, connect);
 816
 817         rc = OBP(obd, connect)(env, conn, obd, cluuid, d, localdata);
 818         /* check that only subset is granted */
 819         LASSERT(ergo(d != NULL,
 820                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 821         RETURN(rc);
 822 }
 823
 824 static inline int obd_reconnect(const struct lu_env *env,
 825                                 struct obd_export *exp,
 826                                 struct obd_device *obd,
 827                                 struct obd_uuid *cluuid,
 828                                 struct obd_connect_data *d,
 829                                 void *localdata)
 830 {
 831         int rc;
 832         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 833                                                    * check */
 834
 835         ENTRY;
 836
 837         OBD_CHECK_DEV_ACTIVE(obd);
 838         OBD_CHECK_DT_OP(obd, reconnect, 0);
 839         OBD_COUNTER_INCREMENT(obd, reconnect);
 840
 841         rc = OBP(obd, reconnect)(env, exp, obd, cluuid, d, localdata);
 842         /* check that only subset is granted */
 843         LASSERT(ergo(d != NULL,
 844                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 845         RETURN(rc);
 846 }
 847
 848 static inline int obd_disconnect(struct obd_export *exp)
 849 {
 850         int rc;
 851         ENTRY;
 852
 853         EXP_CHECK_DT_OP(exp, disconnect);
 854         EXP_COUNTER_INCREMENT(exp, disconnect);
 855
 856         rc = OBP(exp->exp_obd, disconnect)(exp);
 857         RETURN(rc);
 858 }
 859
 860 static inline int obd_fid_init(struct obd_export *exp)
 861 {
 862         int rc;
 863         ENTRY;
 864
 865         OBD_CHECK_DT_OP(exp->exp_obd, fid_init, 0);
 866         EXP_COUNTER_INCREMENT(exp, fid_init);
 867
 868         rc = OBP(exp->exp_obd, fid_init)(exp);
 869         RETURN(rc);
 870 }
 871
 872 static inline int obd_fid_fini(struct obd_export *exp)
 873 {
 874         int rc;
 875         ENTRY;
 876
 877         OBD_CHECK_DT_OP(exp->exp_obd, fid_fini, 0);
 878         EXP_COUNTER_INCREMENT(exp, fid_fini);
 879
 880         rc = OBP(exp->exp_obd, fid_fini)(exp);
 881         RETURN(rc);
 882 }
 883
 884 static inline int obd_fid_alloc(struct obd_export *exp,
 885                                 struct lu_fid *fid,
 886                                 struct md_op_data *op_data)
 887 {
 888         int rc;
 889         ENTRY;
 890
 891         EXP_CHECK_DT_OP(exp, fid_alloc);
 892         EXP_COUNTER_INCREMENT(exp, fid_alloc);
 893
 894         rc = OBP(exp->exp_obd, fid_alloc)(exp, fid, op_data);
 895         RETURN(rc);
 896 }
 897
 898 static inline int obd_fid_delete(struct obd_export *exp,
 899                                  const struct lu_fid *fid)
 900 {
 901         int rc;
 902         ENTRY;
 903
 904         EXP_CHECK_DT_OP(exp, fid_delete);
 905         EXP_COUNTER_INCREMENT(exp, fid_delete);
 906
 907         rc = OBP(exp->exp_obd, fid_delete)(exp, fid);
 908         RETURN(rc);
 909 }
 910
 911 static inline int obd_ping(struct obd_export *exp)
 912 {
 913         int rc;
 914         ENTRY;
 915
 916         OBD_CHECK_DT_OP(exp->exp_obd, ping, 0);
 917         EXP_COUNTER_INCREMENT(exp, ping);
 918
 919         rc = OBP(exp->exp_obd, ping)(exp);
 920         RETURN(rc);
 921 }
 922
 923 static inline int obd_pool_new(struct obd_device *obd, char *poolname)
 924 {
 925         int rc;
 926         ENTRY;
 927
 928         OBD_CHECK_DT_OP(obd, pool_new, -EOPNOTSUPP);
 929         OBD_COUNTER_INCREMENT(obd, pool_new);
 930
 931         rc = OBP(obd, pool_new)(obd, poolname);
 932         RETURN(rc);
 933 }
 934
 935 static inline int obd_pool_del(struct obd_device *obd, char *poolname)
 936 {
 937         int rc;
 938         ENTRY;
 939
 940         OBD_CHECK_DT_OP(obd, pool_del, -EOPNOTSUPP);
 941         OBD_COUNTER_INCREMENT(obd, pool_del);
 942
 943         rc = OBP(obd, pool_del)(obd, poolname);
 944         RETURN(rc);
 945 }
 946
 947 static inline int obd_pool_add(struct obd_device *obd, char *poolname, char *ostname)
 948 {
 949         int rc;
 950         ENTRY;
 951
 952         OBD_CHECK_DT_OP(obd, pool_add, -EOPNOTSUPP);
 953         OBD_COUNTER_INCREMENT(obd, pool_add);
 954
 955         rc = OBP(obd, pool_add)(obd, poolname, ostname);
 956         RETURN(rc);
 957 }
 958
 959 static inline int obd_pool_rem(struct obd_device *obd, char *poolname, char *ostname)
 960 {
 961         int rc;
 962         ENTRY;
 963
 964         OBD_CHECK_DT_OP(obd, pool_rem, -EOPNOTSUPP);
 965         OBD_COUNTER_INCREMENT(obd, pool_rem);
 966
 967         rc = OBP(obd, pool_rem)(obd, poolname, ostname);
 968         RETURN(rc);
 969 }
 970
 971 static inline int obd_init_export(struct obd_export *exp)
 972 {
 973         int rc = 0;
 974
 975         ENTRY;
 976         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 977             OBP((exp)->exp_obd, init_export))
 978                 rc = OBP(exp->exp_obd, init_export)(exp);
 979         RETURN(rc);
 980 }
 981
 982 static inline int obd_destroy_export(struct obd_export *exp)
 983 {
 984         ENTRY;
 985         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 986             OBP((exp)->exp_obd, destroy_export))
 987                 OBP(exp->exp_obd, destroy_export)(exp);
 988         RETURN(0);
 989 }
 990
 991 static inline int obd_extent_calc(struct obd_export *exp,
 992                                   struct lov_stripe_md *md,
 993                                   int cmd, obd_off *offset)
 994 {
 995         int rc;
 996         ENTRY;
 997         EXP_CHECK_DT_OP(exp, extent_calc);
 998         rc = OBP(exp->exp_obd, extent_calc)(exp, md, cmd, offset);
 999         RETURN(rc);
1000 }
1001
1002 static inline struct dentry *
1003 obd_lvfs_fid2dentry(struct obd_export *exp, __u64 id_ino, __u32 gen, __u64 gr)
1004 {
1005         LASSERT(exp->exp_obd);
1006
1007         return lvfs_fid2dentry(&exp->exp_obd->obd_lvfs_ctxt, id_ino, gen, gr,
1008                                exp->exp_obd);
1009 }
1010
1011 static inline int
1012 obd_lvfs_open_llog(struct obd_export *exp, __u64 id_ino, struct dentry *dentry)
1013 {
1014         LASSERT(exp->exp_obd);
1015         CERROR("FIXME what's the story here?  This needs to be an obd fn?\n");
1016 #if 0
1017         return lvfs_open_llog(&exp->exp_obd->obd_lvfs_ctxt, id_ino,
1018                               dentry, exp->exp_obd);
1019 #endif
1020         return 0;
1021 }
1022
1023 #ifndef time_before
1024 #define time_before(t1, t2) ((long)t2 - (long)t1 > 0)
1025 #endif
1026
1027 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1028  * If the cache is older than @max_age we will get a new value from the
1029  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1030 static inline int obd_statfs_async(struct obd_device *obd,
1031                                    struct obd_info *oinfo,
1032                                    __u64 max_age,
1033                                    struct ptlrpc_request_set *rqset)
1034 {
1035         int rc = 0;
1036         ENTRY;
1037
1038         if (obd == NULL)
1039                 RETURN(-EINVAL);
1040
1041         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1042         OBD_COUNTER_INCREMENT(obd, statfs);
1043
1044         CDEBUG(D_SUPER, "%s: osfs %p age "LPU64", max_age "LPU64"\n",
1045                obd->obd_name, &obd->obd_osfs, obd->obd_osfs_age, max_age);
1046         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1047                 rc = OBP(obd, statfs_async)(obd, oinfo, max_age, rqset);
1048         } else {
1049                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1050                        " objects "LPU64"/"LPU64"\n",
1051                        obd->obd_name, &obd->obd_osfs,
1052                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1053                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1054                 spin_lock(&obd->obd_osfs_lock);
1055                 memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
1056                 spin_unlock(&obd->obd_osfs_lock);
1057                 oinfo->oi_flags |= OBD_STATFS_FROM_CACHE;
1058                 if (oinfo->oi_cb_up)
1059                         oinfo->oi_cb_up(oinfo, 0);
1060         }
1061         RETURN(rc);
1062 }
1063
1064 static inline int obd_statfs_rqset(struct obd_device *obd,
1065                                    struct obd_statfs *osfs, __u64 max_age,
1066                                    __u32 flags)
1067 {
1068         struct ptlrpc_request_set *set = NULL;
1069         struct obd_info oinfo = { { { 0 } } };
1070         int rc = 0;
1071         ENTRY;
1072
1073         set =  ptlrpc_prep_set();
1074         if (set == NULL)
1075                 RETURN(-ENOMEM);
1076
1077         oinfo.oi_osfs = osfs;
1078         oinfo.oi_flags = flags;
1079         rc = obd_statfs_async(obd, &oinfo, max_age, set);
1080         if (rc == 0)
1081                 rc = ptlrpc_set_wait(set);
1082         ptlrpc_set_destroy(set);
1083         RETURN(rc);
1084 }
1085
1086 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1087  * If the cache is older than @max_age we will get a new value from the
1088  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1089 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
1090                              __u64 max_age, __u32 flags)
1091 {
1092         int rc = 0;
1093         ENTRY;
1094
1095         if (obd == NULL)
1096                 RETURN(-EINVAL);
1097
1098         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1099         OBD_COUNTER_INCREMENT(obd, statfs);
1100
1101         CDEBUG(D_SUPER, "osfs "LPU64", max_age "LPU64"\n",
1102                obd->obd_osfs_age, max_age);
1103         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1104                 rc = OBP(obd, statfs)(obd, osfs, max_age, flags);
1105                 if (rc == 0) {
1106                         spin_lock(&obd->obd_osfs_lock);
1107                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
1108                         obd->obd_osfs_age = cfs_time_current_64();
1109                         spin_unlock(&obd->obd_osfs_lock);
1110                 }
1111         } else {
1112                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1113                        " objects "LPU64"/"LPU64"\n",
1114                        obd->obd_name, &obd->obd_osfs,
1115                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1116                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1117                 spin_lock(&obd->obd_osfs_lock);
1118                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
1119                 spin_unlock(&obd->obd_osfs_lock);
1120         }
1121         RETURN(rc);
1122 }
1123
1124 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
1125                            struct lov_stripe_md *ea, obd_size start,
1126                            obd_size end, void *capa)
1127 {
1128         int rc;
1129         ENTRY;
1130
1131         OBD_CHECK_DT_OP(exp->exp_obd, sync, -EOPNOTSUPP);
1132         EXP_COUNTER_INCREMENT(exp, sync);
1133
1134         rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end, capa);
1135         RETURN(rc);
1136 }
1137
1138 static inline int obd_punch_rqset(struct obd_export *exp,
1139                                   struct obd_info *oinfo,
1140                                   struct obd_trans_info *oti)
1141 {
1142         struct ptlrpc_request_set *set = NULL;
1143         int rc;
1144         ENTRY;
1145
1146         EXP_CHECK_DT_OP(exp, punch);
1147         EXP_COUNTER_INCREMENT(exp, punch);
1148
1149         set =  ptlrpc_prep_set();
1150         if (set == NULL)
1151                 RETURN(-ENOMEM);
1152
1153         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, set);
1154         if (rc == 0)
1155                 rc = ptlrpc_set_wait(set);
1156         ptlrpc_set_destroy(set);
1157         RETURN(rc);
1158 }
1159
1160 static inline int obd_punch(struct obd_export *exp, struct obd_info *oinfo,
1161                             struct obd_trans_info *oti,
1162                             struct ptlrpc_request_set *rqset)
1163 {
1164         int rc;
1165         ENTRY;
1166
1167         EXP_CHECK_DT_OP(exp, punch);
1168         EXP_COUNTER_INCREMENT(exp, punch);
1169
1170         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, rqset);
1171         RETURN(rc);
1172 }
1173
1174 static inline int obd_brw(int cmd, struct obd_export *exp,
1175                           struct obd_info *oinfo, obd_count oa_bufs,
1176                           struct brw_page *pg, struct obd_trans_info *oti)
1177 {
1178         int rc;
1179         ENTRY;
1180
1181         EXP_CHECK_DT_OP(exp, brw);
1182         EXP_COUNTER_INCREMENT(exp, brw);
1183
1184         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
1185                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
1186                        "or OBD_BRW_CHECK\n");
1187                 LBUG();
1188         }
1189
1190         rc = OBP(exp->exp_obd, brw)(cmd, exp, oinfo, oa_bufs, pg, oti);
1191         RETURN(rc);
1192 }
1193
1194 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
1195                              int objcount, struct obd_ioobj *obj,
1196                              struct niobuf_remote *remote, int *pages,
1197                              struct niobuf_local *local,
1198                              struct obd_trans_info *oti,
1199                              struct lustre_capa *capa)
1200 {
1201         int rc;
1202         ENTRY;
1203
1204         EXP_CHECK_DT_OP(exp, preprw);
1205         EXP_COUNTER_INCREMENT(exp, preprw);
1206
1207         rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, remote,
1208                                        pages, local, oti, capa);
1209         RETURN(rc);
1210 }
1211
1212 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
1213                                int objcount, struct obd_ioobj *obj,
1214                                struct niobuf_remote *rnb, int pages,
1215                                struct niobuf_local *local,
1216                                struct obd_trans_info *oti, int rc)
1217 {
1218         ENTRY;
1219
1220         EXP_CHECK_DT_OP(exp, commitrw);
1221         EXP_COUNTER_INCREMENT(exp, commitrw);
1222
1223         rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj,
1224                                          rnb, pages, local, oti, rc);
1225         RETURN(rc);
1226 }
1227
1228 static inline int obd_merge_lvb(struct obd_export *exp,
1229                                 struct lov_stripe_md *lsm,
1230                                 struct ost_lvb *lvb, int kms_only)
1231 {
1232         int rc;
1233         ENTRY;
1234
1235         EXP_CHECK_DT_OP(exp, merge_lvb);
1236         EXP_COUNTER_INCREMENT(exp, merge_lvb);
1237
1238         rc = OBP(exp->exp_obd, merge_lvb)(exp, lsm, lvb, kms_only);
1239         RETURN(rc);
1240 }
1241
1242 static inline int obd_adjust_kms(struct obd_export *exp,
1243                                  struct lov_stripe_md *lsm, obd_off size,
1244                                  int shrink)
1245 {
1246         int rc;
1247         ENTRY;
1248
1249         EXP_CHECK_DT_OP(exp, adjust_kms);
1250         EXP_COUNTER_INCREMENT(exp, adjust_kms);
1251
1252         rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
1253         RETURN(rc);
1254 }
1255
1256 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1257                                 int len, void *karg, void *uarg)
1258 {
1259         int rc;
1260         ENTRY;
1261
1262         EXP_CHECK_DT_OP(exp, iocontrol);
1263         EXP_COUNTER_INCREMENT(exp, iocontrol);
1264
1265         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1266         RETURN(rc);
1267 }
1268
1269 static inline int obd_enqueue_rqset(struct obd_export *exp,
1270                                     struct obd_info *oinfo,
1271                                     struct ldlm_enqueue_info *einfo)
1272 {
1273         struct ptlrpc_request_set *set = NULL;
1274         int rc;
1275         ENTRY;
1276
1277         EXP_CHECK_DT_OP(exp, enqueue);
1278         EXP_COUNTER_INCREMENT(exp, enqueue);
1279
1280         set =  ptlrpc_prep_set();
1281         if (set == NULL)
1282                 RETURN(-ENOMEM);
1283
1284         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1285         if (rc == 0)
1286                 rc = ptlrpc_set_wait(set);
1287         ptlrpc_set_destroy(set);
1288         RETURN(rc);
1289 }
1290
1291 static inline int obd_enqueue(struct obd_export *exp,
1292                               struct obd_info *oinfo,
1293                               struct ldlm_enqueue_info *einfo,
1294                               struct ptlrpc_request_set *set)
1295 {
1296         int rc;
1297         ENTRY;
1298
1299         EXP_CHECK_DT_OP(exp, enqueue);
1300         EXP_COUNTER_INCREMENT(exp, enqueue);
1301
1302         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1303         RETURN(rc);
1304 }
1305
1306 static inline int obd_change_cbdata(struct obd_export *exp,
1307                                     struct lov_stripe_md *lsm,
1308                                     ldlm_iterator_t it, void *data)
1309 {
1310         int rc;
1311         ENTRY;
1312
1313         EXP_CHECK_DT_OP(exp, change_cbdata);
1314         EXP_COUNTER_INCREMENT(exp, change_cbdata);
1315
1316         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1317         RETURN(rc);
1318 }
1319
1320 static inline int obd_cancel(struct obd_export *exp,
1321                              struct lov_stripe_md *ea, __u32 mode,
1322                              struct lustre_handle *lockh)
1323 {
1324         int rc;
1325         ENTRY;
1326
1327         EXP_CHECK_DT_OP(exp, cancel);
1328         EXP_COUNTER_INCREMENT(exp, cancel);
1329
1330         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1331         RETURN(rc);
1332 }
1333
1334 static inline int obd_cancel_unused(struct obd_export *exp,
1335                                     struct lov_stripe_md *ea,
1336                                     int flags, void *opaque)
1337 {
1338         int rc;
1339         ENTRY;
1340
1341         EXP_CHECK_DT_OP(exp, cancel_unused);
1342         EXP_COUNTER_INCREMENT(exp, cancel_unused);
1343
1344         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1345         RETURN(rc);
1346 }
1347
1348 static inline int obd_pin(struct obd_export *exp, const struct lu_fid *fid,
1349                           struct obd_capa *oc, struct obd_client_handle *handle,
1350                           int flag)
1351 {
1352         int rc;
1353         ENTRY;
1354
1355         EXP_CHECK_DT_OP(exp, pin);
1356         EXP_COUNTER_INCREMENT(exp, pin);
1357
1358         rc = OBP(exp->exp_obd, pin)(exp, fid, oc, handle, flag);
1359         RETURN(rc);
1360 }
1361
1362 static inline int obd_unpin(struct obd_export *exp,
1363                             struct obd_client_handle *handle, int flag)
1364 {
1365         int rc;
1366         ENTRY;
1367
1368         EXP_CHECK_DT_OP(exp, unpin);
1369         EXP_COUNTER_INCREMENT(exp, unpin);
1370
1371         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1372         RETURN(rc);
1373 }
1374
1375
1376 static inline void obd_import_event(struct obd_device *obd,
1377                                     struct obd_import *imp,
1378                                     enum obd_import_event event)
1379 {
1380         ENTRY;
1381         if (!obd) {
1382                 CERROR("NULL device\n");
1383                 EXIT;
1384                 return;
1385         }
1386         if (obd->obd_set_up && OBP(obd, import_event)) {
1387                 OBD_COUNTER_INCREMENT(obd, import_event);
1388                 OBP(obd, import_event)(obd, imp, event);
1389         }
1390         EXIT;
1391 }
1392
1393 static inline int obd_llog_connect(struct obd_export *exp,
1394                                    struct llogd_conn_body *body)
1395 {
1396         int rc;
1397         ENTRY;
1398
1399         OBD_CHECK_DT_OP(exp->exp_obd, llog_connect, 0);
1400         EXP_COUNTER_INCREMENT(exp, llog_connect);
1401
1402         rc = OBP(exp->exp_obd, llog_connect)(exp, body);
1403         RETURN(rc);
1404 }
1405
1406
1407 static inline int obd_notify(struct obd_device *obd,
1408                              struct obd_device *watched,
1409                              enum obd_notify_event ev,
1410                              void *data)
1411 {
1412         int rc;
1413         ENTRY;
1414         OBD_CHECK_DEV(obd);
1415
1416         /* the check for async_recov is a complete hack - I'm hereby
1417            overloading the meaning to also mean "this was called from
1418            mds_postsetup".  I know that my mds is able to handle notifies
1419            by this point, and it needs to get them to execute mds_postrecov. */
1420         if (!obd->obd_set_up && !obd->obd_async_recov) {
1421                 CDEBUG(D_HA, "obd %s not set up\n", obd->obd_name);
1422                 RETURN(-EINVAL);
1423         }
1424
1425         if (!OBP(obd, notify)) {
1426                 CERROR("obd %s has no notify handler\n", obd->obd_name);
1427                 RETURN(-ENOSYS);
1428         }
1429
1430         OBD_COUNTER_INCREMENT(obd, notify);
1431         rc = OBP(obd, notify)(obd, watched, ev, data);
1432         RETURN(rc);
1433 }
1434
1435 static inline int obd_notify_observer(struct obd_device *observer,
1436                                       struct obd_device *observed,
1437                                       enum obd_notify_event ev,
1438                                       void *data)
1439 {
1440         int rc1;
1441         int rc2;
1442
1443         struct obd_notify_upcall *onu;
1444
1445         if (observer->obd_observer)
1446                 rc1 = obd_notify(observer->obd_observer, observed, ev, data);
1447         else
1448                 rc1 = 0;
1449         /*
1450          * Also, call non-obd listener, if any
1451          */
1452         onu = &observer->obd_upcall;
1453         if (onu->onu_upcall != NULL)
1454                 rc2 = onu->onu_upcall(observer, observed, ev, onu->onu_owner);
1455         else
1456                 rc2 = 0;
1457
1458         return rc1 ? rc1 : rc2;
1459 }
1460
1461 static inline int obd_quotacheck(struct obd_export *exp,
1462                                  struct obd_quotactl *oqctl)
1463 {
1464         int rc;
1465         ENTRY;
1466
1467         EXP_CHECK_DT_OP(exp, quotacheck);
1468         EXP_COUNTER_INCREMENT(exp, quotacheck);
1469
1470         rc = OBP(exp->exp_obd, quotacheck)(exp->exp_obd, exp, oqctl);
1471         RETURN(rc);
1472 }
1473
1474 static inline int obd_quotactl(struct obd_export *exp,
1475                                struct obd_quotactl *oqctl)
1476 {
1477         int rc;
1478         ENTRY;
1479
1480         EXP_CHECK_DT_OP(exp, quotactl);
1481         EXP_COUNTER_INCREMENT(exp, quotactl);
1482
1483         rc = OBP(exp->exp_obd, quotactl)(exp->exp_obd, exp, oqctl);
1484         RETURN(rc);
1485 }
1486
1487 static inline int obd_quota_adjust_qunit(struct obd_export *exp,
1488                                          struct quota_adjust_qunit *oqaq,
1489                                          struct lustre_quota_ctxt *qctxt)
1490 {
1491 #if defined(LPROCFS) && defined(HAVE_QUOTA_SUPPORT)
1492         struct timeval work_start;
1493         struct timeval work_end;
1494         long timediff;
1495 #endif
1496         int rc;
1497         ENTRY;
1498
1499 #if defined(LPROCFS) && defined(HAVE_QUOTA_SUPPORT)
1500         if (qctxt)
1501                 do_gettimeofday(&work_start);
1502 #endif
1503         EXP_CHECK_DT_OP(exp, quota_adjust_qunit);
1504         EXP_COUNTER_INCREMENT(exp, quota_adjust_qunit);
1505
1506         rc = OBP(exp->exp_obd, quota_adjust_qunit)(exp, oqaq, qctxt);
1507
1508 #if defined(LPROCFS) && defined(HAVE_QUOTA_SUPPORT)
1509         if (qctxt) {
1510                 do_gettimeofday(&work_end);
1511                 timediff = cfs_timeval_sub(&work_end, &work_start, NULL);
1512                 lprocfs_counter_add(qctxt->lqc_stats, LQUOTA_ADJUST_QUNIT,
1513                                     timediff);
1514         }
1515 #endif
1516         RETURN(rc);
1517 }
1518
1519 static inline int obd_health_check(struct obd_device *obd)
1520 {
1521         /* returns: 0 on healthy
1522          *         >0 on unhealthy + reason code/flag
1523          *            however the only suppored reason == 1 right now
1524          *            We'll need to define some better reasons
1525          *            or flags in the future.
1526          *         <0 on error
1527          */
1528         int rc;
1529         ENTRY;
1530
1531         /* don't use EXP_CHECK_DT_OP, because NULL method is normal here */
1532         if (obd == NULL || !OBT(obd)) {
1533                 CERROR("cleaned up obd\n");
1534                 RETURN(-EOPNOTSUPP);
1535         }
1536         if (!obd->obd_set_up || obd->obd_stopping)
1537                 RETURN(0);
1538         if (!OBP(obd, health_check))
1539                 RETURN(0);
1540
1541         rc = OBP(obd, health_check)(obd);
1542         RETURN(rc);
1543 }
1544
1545 static inline int obd_register_observer(struct obd_device *obd,
1546                                         struct obd_device *observer)
1547 {
1548         ENTRY;
1549         OBD_CHECK_DEV(obd);
1550         if (obd->obd_observer && observer)
1551                 RETURN(-EALREADY);
1552         obd->obd_observer = observer;
1553         RETURN(0);
1554 }
1555
1556 #if 0
1557 static inline int obd_register_page_removal_cb(struct obd_export *exp,
1558                                                obd_page_removal_cb_t cb,
1559                                                obd_pin_extent_cb pin_cb)
1560 {
1561         int rc;
1562         ENTRY;
1563
1564         OBD_CHECK_DT_OP(exp->exp_obd, register_page_removal_cb, 0);
1565         OBD_COUNTER_INCREMENT(exp->exp_obd, register_page_removal_cb);
1566
1567         rc = OBP(exp->exp_obd, register_page_removal_cb)(exp, cb, pin_cb);
1568         RETURN(rc);
1569 }
1570
1571 static inline int obd_unregister_page_removal_cb(struct obd_export *exp,
1572                                                  obd_page_removal_cb_t cb)
1573 {
1574         int rc;
1575         ENTRY;
1576
1577         OBD_CHECK_DT_OP(exp->exp_obd, unregister_page_removal_cb, 0);
1578         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_page_removal_cb);
1579
1580         rc = OBP(exp->exp_obd, unregister_page_removal_cb)(exp, cb);
1581         RETURN(rc);
1582 }
1583
1584 static inline int obd_register_lock_cancel_cb(struct obd_export *exp,
1585                                               obd_lock_cancel_cb cb)
1586 {
1587         int rc;
1588         ENTRY;
1589
1590         OBD_CHECK_DT_OP(exp->exp_obd, register_lock_cancel_cb, 0);
1591         OBD_COUNTER_INCREMENT(exp->exp_obd, register_lock_cancel_cb);
1592
1593         rc = OBP(exp->exp_obd, register_lock_cancel_cb)(exp, cb);
1594         RETURN(rc);
1595 }
1596
1597 static inline int obd_unregister_lock_cancel_cb(struct obd_export *exp,
1598                                                  obd_lock_cancel_cb cb)
1599 {
1600         int rc;
1601         ENTRY;
1602
1603         OBD_CHECK_DT_OP(exp->exp_obd, unregister_lock_cancel_cb, 0);
1604         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_lock_cancel_cb);
1605
1606         rc = OBP(exp->exp_obd, unregister_lock_cancel_cb)(exp, cb);
1607         RETURN(rc);
1608 }
1609 #endif
1610
1611 /* metadata helpers */
1612 static inline int md_getstatus(struct obd_export *exp,
1613                                struct lu_fid *fid, struct obd_capa **pc)
1614 {
1615         int rc;
1616         ENTRY;
1617
1618         EXP_CHECK_MD_OP(exp, getstatus);
1619         EXP_MD_COUNTER_INCREMENT(exp, getstatus);
1620         rc = MDP(exp->exp_obd, getstatus)(exp, fid, pc);
1621         RETURN(rc);
1622 }
1623
1624 static inline int md_getattr(struct obd_export *exp, const struct lu_fid *fid,
1625                              struct obd_capa *oc, obd_valid valid, int ea_size,
1626                              struct ptlrpc_request **request)
1627 {
1628         int rc;
1629         ENTRY;
1630         EXP_CHECK_MD_OP(exp, getattr);
1631         EXP_MD_COUNTER_INCREMENT(exp, getattr);
1632         rc = MDP(exp->exp_obd, getattr)(exp, fid, oc, valid,
1633                                         ea_size, request);
1634         RETURN(rc);
1635 }
1636
1637 static inline int md_change_cbdata(struct obd_export *exp,
1638                                    const struct lu_fid *fid,
1639                                    ldlm_iterator_t it, void *data)
1640 {
1641         int rc;
1642         ENTRY;
1643         EXP_CHECK_MD_OP(exp, change_cbdata);
1644         EXP_MD_COUNTER_INCREMENT(exp, change_cbdata);
1645         rc = MDP(exp->exp_obd, change_cbdata)(exp, fid, it, data);
1646         RETURN(rc);
1647 }
1648
1649 static inline int md_close(struct obd_export *exp, struct md_op_data *op_data,
1650                            struct md_open_data *mod,
1651                            struct ptlrpc_request **request)
1652 {
1653         int rc;
1654         ENTRY;
1655         EXP_CHECK_MD_OP(exp, close);
1656         EXP_MD_COUNTER_INCREMENT(exp, close);
1657         rc = MDP(exp->exp_obd, close)(exp, op_data, mod, request);
1658         RETURN(rc);
1659 }
1660
1661 static inline int md_create(struct obd_export *exp, struct md_op_data *op_data,
1662                             const void *data, int datalen, int mode, __u32 uid,
1663                             __u32 gid, cfs_cap_t cap_effective, __u64 rdev,
1664                             struct ptlrpc_request **request)
1665 {
1666         int rc;
1667         ENTRY;
1668         EXP_CHECK_MD_OP(exp, create);
1669         EXP_MD_COUNTER_INCREMENT(exp, create);
1670         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1671                                        uid, gid, cap_effective, rdev, request);
1672         RETURN(rc);
1673 }
1674
1675 static inline int md_done_writing(struct obd_export *exp,
1676                                   struct md_op_data *op_data,
1677                                   struct md_open_data *mod)
1678 {
1679         int rc;
1680         ENTRY;
1681         EXP_CHECK_MD_OP(exp, done_writing);
1682         EXP_MD_COUNTER_INCREMENT(exp, done_writing);
1683         rc = MDP(exp->exp_obd, done_writing)(exp, op_data, mod);
1684         RETURN(rc);
1685 }
1686
1687 static inline int md_enqueue(struct obd_export *exp,
1688                              struct ldlm_enqueue_info *einfo,
1689                              struct lookup_intent *it,
1690                              struct md_op_data *op_data,
1691                              struct lustre_handle *lockh,
1692                              void *lmm, int lmmsize,
1693                              struct ptlrpc_request **req,
1694                              int extra_lock_flags)
1695 {
1696         int rc;
1697         ENTRY;
1698         EXP_CHECK_MD_OP(exp, enqueue);
1699         EXP_MD_COUNTER_INCREMENT(exp, enqueue);
1700         rc = MDP(exp->exp_obd, enqueue)(exp, einfo, it, op_data, lockh,
1701                                         lmm, lmmsize, req, extra_lock_flags);
1702         RETURN(rc);
1703 }
1704
1705 static inline int md_getattr_name(struct obd_export *exp,
1706                                   const struct lu_fid *fid, struct obd_capa *oc,
1707                                   const char *name, int namelen,
1708                                   obd_valid valid, int ea_size, __u32 suppgid,
1709                                   struct ptlrpc_request **request)
1710 {
1711         int rc;
1712         ENTRY;
1713         EXP_CHECK_MD_OP(exp, getattr_name);
1714         EXP_MD_COUNTER_INCREMENT(exp, getattr_name);
1715         rc = MDP(exp->exp_obd, getattr_name)(exp, fid, oc, name, namelen,
1716                                              valid, ea_size, suppgid, request);
1717         RETURN(rc);
1718 }
1719
1720 static inline int md_intent_lock(struct obd_export *exp,
1721                                  struct md_op_data *op_data, void *lmm,
1722                                  int lmmsize, struct lookup_intent *it,
1723                                  int flags, struct ptlrpc_request **reqp,
1724                                  ldlm_blocking_callback cb_blocking,
1725                                  int extra_lock_flags)
1726 {
1727         int rc;
1728         ENTRY;
1729         EXP_CHECK_MD_OP(exp, intent_lock);
1730         EXP_MD_COUNTER_INCREMENT(exp, intent_lock);
1731         rc = MDP(exp->exp_obd, intent_lock)(exp, op_data, lmm, lmmsize,
1732                                             it, flags, reqp, cb_blocking,
1733                                             extra_lock_flags);
1734         RETURN(rc);
1735 }
1736
1737 static inline int md_link(struct obd_export *exp, struct md_op_data *op_data,
1738                           struct ptlrpc_request **request)
1739 {
1740         int rc;
1741         ENTRY;
1742         EXP_CHECK_MD_OP(exp, link);
1743         EXP_MD_COUNTER_INCREMENT(exp, link);
1744         rc = MDP(exp->exp_obd, link)(exp, op_data, request);
1745         RETURN(rc);
1746 }
1747
1748 static inline int md_rename(struct obd_export *exp, struct md_op_data *op_data,
1749                             const char *old, int oldlen, const char *new,
1750                             int newlen, struct ptlrpc_request **request)
1751 {
1752         int rc;
1753         ENTRY;
1754         EXP_CHECK_MD_OP(exp, rename);
1755         EXP_MD_COUNTER_INCREMENT(exp, rename);
1756         rc = MDP(exp->exp_obd, rename)(exp, op_data, old, oldlen, new,
1757                                        newlen, request);
1758         RETURN(rc);
1759 }
1760
1761 static inline int md_is_subdir(struct obd_export *exp,
1762                                const struct lu_fid *pfid,
1763                                const struct lu_fid *cfid,
1764                                struct ptlrpc_request **request)
1765 {
1766         int rc;
1767         ENTRY;
1768         EXP_CHECK_MD_OP(exp, is_subdir);
1769         EXP_MD_COUNTER_INCREMENT(exp, is_subdir);
1770         rc = MDP(exp->exp_obd, is_subdir)(exp, pfid, cfid, request);
1771         RETURN(rc);
1772 }
1773
1774 static inline int md_setattr(struct obd_export *exp, struct md_op_data *op_data,
1775                              void *ea, int ealen, void *ea2, int ea2len,
1776                              struct ptlrpc_request **request,
1777                              struct md_open_data **mod)
1778 {
1779         int rc;
1780         ENTRY;
1781         EXP_CHECK_MD_OP(exp, setattr);
1782         EXP_MD_COUNTER_INCREMENT(exp, setattr);
1783         rc = MDP(exp->exp_obd, setattr)(exp, op_data, ea, ealen,
1784                                         ea2, ea2len, request, mod);
1785         RETURN(rc);
1786 }
1787
1788 static inline int md_sync(struct obd_export *exp, const struct lu_fid *fid,
1789                           struct obd_capa *oc, struct ptlrpc_request **request)
1790 {
1791         int rc;
1792         ENTRY;
1793         EXP_CHECK_MD_OP(exp, sync);
1794         EXP_MD_COUNTER_INCREMENT(exp, sync);
1795         rc = MDP(exp->exp_obd, sync)(exp, fid, oc, request);
1796         RETURN(rc);
1797 }
1798
1799 static inline int md_readpage(struct obd_export *exp, const struct lu_fid *fid,
1800                               struct obd_capa *oc, __u64 offset,
1801                               struct page *page,
1802                               struct ptlrpc_request **request)
1803 {
1804         int rc;
1805         ENTRY;
1806         EXP_CHECK_MD_OP(exp, readpage);
1807         EXP_MD_COUNTER_INCREMENT(exp, readpage);
1808         rc = MDP(exp->exp_obd, readpage)(exp, fid, oc, offset, page, request);
1809         RETURN(rc);
1810 }
1811
1812 static inline int md_unlink(struct obd_export *exp, struct md_op_data *op_data,
1813                             struct ptlrpc_request **request)
1814 {
1815         int rc;
1816         ENTRY;
1817         EXP_CHECK_MD_OP(exp, unlink);
1818         EXP_MD_COUNTER_INCREMENT(exp, unlink);
1819         rc = MDP(exp->exp_obd, unlink)(exp, op_data, request);
1820         RETURN(rc);
1821 }
1822
1823 static inline int md_get_lustre_md(struct obd_export *exp,
1824                                    struct ptlrpc_request *req,
1825                                    struct obd_export *dt_exp,
1826                                    struct obd_export *md_exp,
1827                                    struct lustre_md *md)
1828 {
1829         ENTRY;
1830         EXP_CHECK_MD_OP(exp, get_lustre_md);
1831         EXP_MD_COUNTER_INCREMENT(exp, get_lustre_md);
1832         RETURN(MDP(exp->exp_obd, get_lustre_md)(exp, req, dt_exp, md_exp, md));
1833 }
1834
1835 static inline int md_free_lustre_md(struct obd_export *exp,
1836                                     struct lustre_md *md)
1837 {
1838         ENTRY;
1839         EXP_CHECK_MD_OP(exp, free_lustre_md);
1840         EXP_MD_COUNTER_INCREMENT(exp, free_lustre_md);
1841         RETURN(MDP(exp->exp_obd, free_lustre_md)(exp, md));
1842 }
1843
1844 static inline int md_setxattr(struct obd_export *exp,
1845                               const struct lu_fid *fid, struct obd_capa *oc,
1846                               obd_valid valid, const char *name,
1847                               const char *input, int input_size,
1848                               int output_size, int flags, __u32 suppgid,
1849                               struct ptlrpc_request **request)
1850 {
1851         ENTRY;
1852         EXP_CHECK_MD_OP(exp, setxattr);
1853         EXP_MD_COUNTER_INCREMENT(exp, setxattr);
1854         RETURN(MDP(exp->exp_obd, setxattr)(exp, fid, oc, valid, name, input,
1855                                            input_size, output_size, flags,
1856                                            suppgid, request));
1857 }
1858
1859 static inline int md_getxattr(struct obd_export *exp,
1860                               const struct lu_fid *fid, struct obd_capa *oc,
1861                               obd_valid valid, const char *name,
1862                               const char *input, int input_size,
1863                               int output_size, int flags,
1864                               struct ptlrpc_request **request)
1865 {
1866         ENTRY;
1867         EXP_CHECK_MD_OP(exp, getxattr);
1868         EXP_MD_COUNTER_INCREMENT(exp, getxattr);
1869         RETURN(MDP(exp->exp_obd, getxattr)(exp, fid, oc, valid, name, input,
1870                                            input_size, output_size, flags,
1871                                            request));
1872 }
1873
1874 static inline int md_set_open_replay_data(struct obd_export *exp,
1875                                           struct obd_client_handle *och,
1876                                           struct ptlrpc_request *open_req)
1877 {
1878         ENTRY;
1879         EXP_CHECK_MD_OP(exp, set_open_replay_data);
1880         EXP_MD_COUNTER_INCREMENT(exp, set_open_replay_data);
1881         RETURN(MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req));
1882 }
1883
1884 static inline int md_clear_open_replay_data(struct obd_export *exp,
1885                                             struct obd_client_handle *och)
1886 {
1887         ENTRY;
1888         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
1889         EXP_MD_COUNTER_INCREMENT(exp, clear_open_replay_data);
1890         RETURN(MDP(exp->exp_obd, clear_open_replay_data)(exp, och));
1891 }
1892
1893 static inline int md_set_lock_data(struct obd_export *exp,
1894                                    __u64 *lockh, void *data)
1895 {
1896         ENTRY;
1897         EXP_CHECK_MD_OP(exp, set_lock_data);
1898         EXP_MD_COUNTER_INCREMENT(exp, set_lock_data);
1899         RETURN(MDP(exp->exp_obd, set_lock_data)(exp, lockh, data));
1900 }
1901
1902 static inline int md_cancel_unused(struct obd_export *exp,
1903                                    const struct lu_fid *fid,
1904                                    ldlm_policy_data_t *policy,
1905                                    ldlm_mode_t mode, int flags, void *opaque)
1906 {
1907         int rc;
1908         ENTRY;
1909
1910         EXP_CHECK_MD_OP(exp, cancel_unused);
1911         EXP_MD_COUNTER_INCREMENT(exp, cancel_unused);
1912
1913         rc = MDP(exp->exp_obd, cancel_unused)(exp, fid, policy, mode,
1914                                               flags, opaque);
1915         RETURN(rc);
1916 }
1917
1918 static inline ldlm_mode_t md_lock_match(struct obd_export *exp, int flags,
1919                                         const struct lu_fid *fid,
1920                                         ldlm_type_t type,
1921                                         ldlm_policy_data_t *policy,
1922                                         ldlm_mode_t mode,
1923                                         struct lustre_handle *lockh)
1924 {
1925         ENTRY;
1926         EXP_CHECK_MD_OP(exp, lock_match);
1927         EXP_MD_COUNTER_INCREMENT(exp, lock_match);
1928         RETURN(MDP(exp->exp_obd, lock_match)(exp, flags, fid, type,
1929                                              policy, mode, lockh));
1930 }
1931
1932 static inline int md_init_ea_size(struct obd_export *exp, int easize,
1933                                   int def_asize, int cookiesize)
1934 {
1935         ENTRY;
1936         EXP_CHECK_MD_OP(exp, init_ea_size);
1937         EXP_MD_COUNTER_INCREMENT(exp, init_ea_size);
1938         RETURN(MDP(exp->exp_obd, init_ea_size)(exp, easize, def_asize,
1939                                                cookiesize));
1940 }
1941
1942 static inline int md_get_remote_perm(struct obd_export *exp,
1943                                      const struct lu_fid *fid,
1944                                      struct obd_capa *oc, __u32 suppgid,
1945                                      struct ptlrpc_request **request)
1946 {
1947         ENTRY;
1948         EXP_CHECK_MD_OP(exp, get_remote_perm);
1949         EXP_MD_COUNTER_INCREMENT(exp, get_remote_perm);
1950         RETURN(MDP(exp->exp_obd, get_remote_perm)(exp, fid, oc, suppgid,
1951                                                   request));
1952 }
1953
1954 static inline int md_renew_capa(struct obd_export *exp, struct obd_capa *ocapa,
1955                                 renew_capa_cb_t cb)
1956 {
1957         int rc;
1958         ENTRY;
1959         EXP_CHECK_MD_OP(exp, renew_capa);
1960         EXP_MD_COUNTER_INCREMENT(exp, renew_capa);
1961         rc = MDP(exp->exp_obd, renew_capa)(exp, ocapa, cb);
1962         RETURN(rc);
1963 }
1964
1965 static inline int md_unpack_capa(struct obd_export *exp,
1966                                  struct ptlrpc_request *req,
1967                                  const struct req_msg_field *field,
1968                                  struct obd_capa **oc)
1969 {
1970         int rc;
1971         ENTRY;
1972         EXP_CHECK_MD_OP(exp, unpack_capa);
1973         EXP_MD_COUNTER_INCREMENT(exp, unpack_capa);
1974         rc = MDP(exp->exp_obd, unpack_capa)(exp, req, field, oc);
1975         RETURN(rc);
1976 }
1977
1978 static inline int md_intent_getattr_async(struct obd_export *exp,
1979                                           struct md_enqueue_info *minfo,
1980                                           struct ldlm_enqueue_info *einfo)
1981 {
1982         int rc;
1983         ENTRY;
1984         EXP_CHECK_MD_OP(exp, intent_getattr_async);
1985         EXP_MD_COUNTER_INCREMENT(exp, intent_getattr_async);
1986         rc = MDP(exp->exp_obd, intent_getattr_async)(exp, minfo, einfo);
1987         RETURN(rc);
1988 }
1989
1990 static inline int md_revalidate_lock(struct obd_export *exp,
1991                                      struct lookup_intent *it,
1992                                      struct lu_fid *fid)
1993 {
1994         int rc;
1995         ENTRY;
1996         EXP_CHECK_MD_OP(exp, revalidate_lock);
1997         EXP_MD_COUNTER_INCREMENT(exp, revalidate_lock);
1998         rc = MDP(exp->exp_obd, revalidate_lock)(exp, it, fid);
1999         RETURN(rc);
2000 }
2001
2002
2003 /* OBD Metadata Support */
2004
2005 extern int obd_init_caches(void);
2006 extern void obd_cleanup_caches(void);
2007
2008 /* support routines */
2009 extern cfs_mem_cache_t *obdo_cachep;
2010
2011 #define OBDO_ALLOC(ptr)                                                       \
2012 do {                                                                          \
2013         OBD_SLAB_ALLOC_PTR((ptr), obdo_cachep);                               \
2014 } while(0)
2015
2016 #define OBDO_FREE(ptr)                                                        \
2017 do {                                                                          \
2018         OBD_SLAB_FREE_PTR((ptr), obdo_cachep);                                \
2019 } while(0)
2020
2021
2022 static inline void obdo2fid(struct obdo *oa, struct lu_fid *fid)
2023 {
2024         /* something here */
2025 }
2026
2027 static inline void fid2obdo(struct lu_fid *fid, struct obdo *oa)
2028 {
2029         /* something here */
2030 }
2031
2032 /* I'm as embarrassed about this as you are.
2033  *
2034  * <shaver> // XXX do not look into _superhack with remaining eye
2035  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
2036 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
2037
2038 /* sysctl.c */
2039 extern void obd_sysctl_init (void);
2040 extern void obd_sysctl_clean (void);
2041
2042 /* uuid.c  */
2043 typedef __u8 class_uuid_t[16];
2044 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
2045
2046 /* lustre_peer.c    */
2047 int lustre_uuid_to_peer(const char *uuid, lnet_nid_t *peer_nid, int index);
2048 int class_add_uuid(const char *uuid, __u64 nid);
2049 int class_del_uuid (const char *uuid);
2050 void class_init_uuidlist(void);
2051 void class_exit_uuidlist(void);
2052
2053 /* mea.c */
2054 int mea_name2idx(struct lmv_stripe_md *mea, const char *name, int namelen);
2055 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
2056
2057 /* prng.c */
2058 void ll_generate_random_uuid(class_uuid_t uuid_out);
2059
2060 #endif /* __LINUX_OBD_CLASS_H */