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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  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_find_client_notype(struct obd_uuid *tgt_uuid,
  90                                              struct obd_uuid *grp_uuid);
  91 struct obd_device * class_devices_in_group(struct obd_uuid *grp_uuid,
  92                                            int *next);
  93 struct obd_device * class_num2obd(int num);
  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
 105 /* obd_config.c */
 106 int class_process_config(struct lustre_cfg *lcfg);
 107 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
 108                              struct lustre_cfg *lcfg, void *data);
 109 int class_attach(struct lustre_cfg *lcfg);
 110 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
 111 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg);
 112 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg);
 113 struct obd_device *class_incref(struct obd_device *obd,
 114                                 const char *scope, const void *source);
 115 void class_decref(struct obd_device *obd,
 116                   const char *scope, const void *source);
 117
 118 /*obdecho*/
 119 #ifdef LPROCFS
 120 extern void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars);
 121 #else
 122 static inline void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars)
 123 {
 124         memset(lvars, 0, sizeof(*lvars));
 125 }
 126 #endif
 127
 128 #define CFG_F_START     0x01   /* Set when we start updating from a log */
 129 #define CFG_F_MARKER    0x02   /* We are within a maker */
 130 #define CFG_F_SKIP      0x04   /* We should ignore this cfg command */
 131 #define CFG_F_COMPAT146 0x08   /* Allow old-style logs */
 132 #define CFG_F_EXCLUDE   0x10   /* OST exclusion list */
 133
 134 /* Passed as data param to class_config_parse_llog */
 135 struct config_llog_instance {
 136         char *              cfg_instance;
 137         struct super_block *cfg_sb;
 138         struct obd_uuid     cfg_uuid;
 139         int                 cfg_last_idx; /* for partial llog processing */
 140         int                 cfg_flags;
 141 };
 142 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
 143                             struct config_llog_instance *cfg);
 144 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
 145                            struct config_llog_instance *cfg);
 146
 147 /* list of active configuration logs  */
 148 struct config_llog_data {
 149         char               *cld_logname;
 150         struct ldlm_res_id  cld_resid;
 151         struct config_llog_instance cld_cfg;
 152         struct list_head    cld_list_chain;
 153         atomic_t            cld_refcount;
 154         struct obd_export  *cld_mgcexp;
 155         unsigned int        cld_stopping:1, /* we were told to stop watching */
 156                             cld_lostlock:1; /* lock not requeued */
 157 };
 158
 159 struct lustre_profile {
 160         struct list_head lp_list;
 161         char            *lp_profile;
 162         char            *lp_dt;
 163         char            *lp_md;
 164 };
 165
 166 struct lustre_profile *class_get_profile(const char * prof);
 167 void class_del_profile(const char *prof);
 168 void class_del_profiles(void);
 169
 170 #define class_export_rpc_get(exp)                                       \
 171 ({                                                                      \
 172         atomic_inc(&(exp)->exp_rpc_count);                              \
 173         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",    \
 174                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 175         class_export_get(exp);                                          \
 176 })
 177
 178 #define class_export_rpc_put(exp)                                       \
 179 ({                                                                      \
 180         atomic_dec(&(exp)->exp_rpc_count);                              \
 181         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",    \
 182                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 183         class_export_put(exp);                                          \
 184 })
 185
 186 /* genops.c */
 187 struct obd_export *class_export_get(struct obd_export *exp);
 188 void class_export_put(struct obd_export *exp);
 189 struct obd_export *class_new_export(struct obd_device *obddev,
 190                                     struct obd_uuid *cluuid);
 191 void class_unlink_export(struct obd_export *exp);
 192
 193 struct obd_import *class_import_get(struct obd_import *);
 194 void class_import_put(struct obd_import *);
 195 struct obd_import *class_new_import(struct obd_device *obd);
 196 void class_destroy_import(struct obd_import *exp);
 197
 198 struct obd_type *class_search_type(const char *name);
 199 struct obd_type *class_get_type(const char *name);
 200 void class_put_type(struct obd_type *type);
 201 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 202                   struct obd_uuid *cluuid);
 203 int class_disconnect(struct obd_export *exp);
 204 void class_fail_export(struct obd_export *exp);
 205 void class_disconnect_exports(struct obd_device *obddev);
 206 int class_disconnect_stale_exports(struct obd_device *,
 207                                     int (*test_export)(struct obd_export *));
 208 int class_manual_cleanup(struct obd_device *obd);
 209
 210 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_flag valid);
 211 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
 212 void obdo_from_iattr(struct obdo *oa, struct iattr *attr,
 213                      unsigned int ia_valid);
 214 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, obd_flag valid);
 215 void md_from_obdo(struct md_op_data *op_data, struct obdo *oa, obd_flag valid);
 216 void obdo_from_md(struct obdo *oa, struct md_op_data *op_data,
 217                   unsigned int valid);
 218
 219 #define OBT(dev)        (dev)->obd_type
 220 #define OBP(dev, op)    (dev)->obd_type->typ_dt_ops->o_ ## op
 221 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
 222 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 223
 224 /* Ensure obd_setup: used for cleanup which must be called
 225    while obd is stopping */
 226 #define OBD_CHECK_DEV(obd)                                      \
 227 do {                                                            \
 228         if (!(obd)) {                                           \
 229                 CERROR("NULL device\n");                        \
 230                 RETURN(-ENODEV);                                \
 231         }                                                       \
 232 } while (0)
 233
 234 /* ensure obd_setup and !obd_stopping */
 235 #define OBD_CHECK_DEV_ACTIVE(obd)                               \
 236 do {                                                            \
 237         OBD_CHECK_DEV(obd);                                     \
 238         if (!(obd)->obd_set_up || (obd)->obd_stopping) {        \
 239                 CERROR("Device %d not setup\n",                 \
 240                        (obd)->obd_minor);                       \
 241                 RETURN(-ENODEV);                                \
 242         }                                                       \
 243 } while (0)
 244
 245
 246 #ifdef LPROCFS
 247 #define OBD_COUNTER_OFFSET(op)                                  \
 248         ((offsetof(struct obd_ops, o_ ## op) -                  \
 249           offsetof(struct obd_ops, o_iocontrol))                \
 250          / sizeof(((struct obd_ops *)(0))->o_iocontrol))
 251
 252 #define OBD_COUNTER_INCREMENT(obdx, op)                           \
 253         if ((obdx)->obd_stats != NULL) {                          \
 254                 unsigned int coffset;                             \
 255                 coffset = (unsigned int)((obdx)->obd_cntr_base) + \
 256                         OBD_COUNTER_OFFSET(op);                   \
 257                 LASSERT(coffset < (obdx)->obd_stats->ls_num);     \
 258                 lprocfs_counter_incr((obdx)->obd_stats, coffset); \
 259         }
 260
 261 #define EXP_COUNTER_INCREMENT(export, op)                                    \
 262         if ((export)->exp_obd->obd_stats != NULL) {                          \
 263                 unsigned int coffset;                                        \
 264                 coffset = (unsigned int)((export)->exp_obd->obd_cntr_base) + \
 265                         OBD_COUNTER_OFFSET(op);                              \
 266                 LASSERT(coffset < (export)->exp_obd->obd_stats->ls_num);     \
 267                 lprocfs_counter_incr((export)->exp_obd->obd_stats, coffset); \
 268                 if ((export)->exp_nid_stats != NULL &&                       \
 269                     (export)->exp_nid_stats->nid_stats != NULL)              \
 270                         lprocfs_counter_incr(                                \
 271                                 (export)->exp_nid_stats->nid_stats, coffset);\
 272         }
 273
 274 #define MD_COUNTER_OFFSET(op)                                   \
 275         ((offsetof(struct md_ops, m_ ## op) -                   \
 276           offsetof(struct md_ops, m_getstatus))                 \
 277          / sizeof(((struct md_ops *)(0))->m_getstatus))
 278
 279 #define MD_COUNTER_INCREMENT(obdx, op)                           \
 280         if ((obd)->md_stats != NULL) {                           \
 281                 unsigned int coffset;                            \
 282                 coffset = (unsigned int)((obdx)->md_cntr_base) + \
 283                         MD_COUNTER_OFFSET(op);                   \
 284                 LASSERT(coffset < (obdx)->md_stats->ls_num);     \
 285                 lprocfs_counter_incr((obdx)->md_stats, coffset); \
 286         }
 287
 288 #define EXP_MD_COUNTER_INCREMENT(export, op)                                 \
 289         if ((export)->exp_obd->obd_stats != NULL) {                          \
 290                 unsigned int coffset;                                        \
 291                 coffset = (unsigned int)((export)->exp_obd->md_cntr_base) +  \
 292                         MD_COUNTER_OFFSET(op);                               \
 293                 LASSERT(coffset < (export)->exp_obd->md_stats->ls_num);      \
 294                 lprocfs_counter_incr((export)->exp_obd->md_stats, coffset);  \
 295                 if ((export)->exp_md_stats != NULL)                          \
 296                         lprocfs_counter_incr(                                \
 297                                 (export)->exp_md_stats, coffset);            \
 298         }
 299
 300 #else
 301 #define OBD_COUNTER_OFFSET(op)
 302 #define OBD_COUNTER_INCREMENT(obd, op)
 303 #define EXP_COUNTER_INCREMENT(exp, op)
 304 #define MD_COUNTER_INCREMENT(obd, op)
 305 #define EXP_MD_COUNTER_INCREMENT(exp, op)
 306 #endif
 307
 308 #define OBD_CHECK_MD_OP(obd, op, err)                           \
 309 do {                                                            \
 310         if (!OBT(obd) || !MDP((obd), op)) {                     \
 311                 if (err)                                        \
 312                         CERROR("md_" #op ": dev %s/%d no operation\n", \
 313                                obd->obd_name, obd->obd_minor);  \
 314                 RETURN(err);                                    \
 315         }                                                       \
 316 } while (0)
 317
 318 #define EXP_CHECK_MD_OP(exp, op)                                \
 319 do {                                                            \
 320         if ((exp) == NULL) {                                    \
 321                 CERROR("obd_" #op ": NULL export\n");           \
 322                 RETURN(-ENODEV);                                \
 323         }                                                       \
 324         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 325                 CERROR("obd_" #op ": cleaned up obd\n");        \
 326                 RETURN(-EOPNOTSUPP);                            \
 327         }                                                       \
 328         if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
 329                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 330                        (exp)->exp_obd->obd_name,                \
 331                        (exp)->exp_obd->obd_minor);              \
 332                 RETURN(-EOPNOTSUPP);                            \
 333         }                                                       \
 334 } while (0)
 335
 336
 337 #define OBD_CHECK_DT_OP(obd, op, err)                           \
 338 do {                                                            \
 339         if (!OBT(obd) || !OBP((obd), op)) {                     \
 340                 if (err)                                        \
 341                         CERROR("obd_" #op ": dev %d no operation\n",    \
 342                                obd->obd_minor);                 \
 343                 RETURN(err);                                    \
 344         }                                                       \
 345 } while (0)
 346
 347 #define EXP_CHECK_DT_OP(exp, op)                                \
 348 do {                                                            \
 349         if ((exp) == NULL) {                                    \
 350                 CERROR("obd_" #op ": NULL export\n");           \
 351                 RETURN(-ENODEV);                                \
 352         }                                                       \
 353         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 354                 CERROR("obd_" #op ": cleaned up obd\n");        \
 355                 RETURN(-EOPNOTSUPP);                            \
 356         }                                                       \
 357         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 358                 CERROR("obd_" #op ": dev %d no operation\n",    \
 359                        (exp)->exp_obd->obd_minor);              \
 360                 RETURN(-EOPNOTSUPP);                            \
 361         }                                                       \
 362 } while (0)
 363
 364 #define CTXT_CHECK_OP(ctxt, op, err)                                 \
 365 do {                                                                 \
 366         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {             \
 367                 if (err)                                             \
 368                         CERROR("lop_" #op ": dev %d no operation\n", \
 369                                ctxt->loc_obd->obd_minor);            \
 370                 RETURN(err);                                         \
 371         }                                                            \
 372 } while (0)
 373
 374 static inline int class_devno_max(void)
 375 {
 376         return MAX_OBD_DEVICES;
 377 }
 378
 379 static inline int obd_get_info(struct obd_export *exp, __u32 keylen,
 380                                void *key, __u32 *vallen, void *val,
 381                                struct lov_stripe_md *lsm)
 382 {
 383         int rc;
 384         ENTRY;
 385
 386         EXP_CHECK_DT_OP(exp, get_info);
 387         EXP_COUNTER_INCREMENT(exp, get_info);
 388
 389         rc = OBP(exp->exp_obd, get_info)(exp, keylen, key, vallen, val, lsm);
 390         RETURN(rc);
 391 }
 392
 393 static inline int obd_set_info_async(struct obd_export *exp, obd_count keylen,
 394                                      void *key, obd_count vallen, void *val,
 395                                      struct ptlrpc_request_set *set)
 396 {
 397         int rc;
 398         ENTRY;
 399
 400         EXP_CHECK_DT_OP(exp, set_info_async);
 401         EXP_COUNTER_INCREMENT(exp, set_info_async);
 402
 403         rc = OBP(exp->exp_obd, set_info_async)(exp, keylen, key, vallen, val,
 404                                                set);
 405         RETURN(rc);
 406 }
 407
 408 /*
 409  * obd-lu integration.
 410  *
 411  * Functionality is being moved into new lu_device-based layering, but some
 412  * pieces of configuration process are still based on obd devices.
 413  *
 414  * Specifically, lu_device_type_operations::ldto_device_alloc() methods fully
 415  * subsume ->o_setup() methods of obd devices they replace. The same for
 416  * lu_device_operations::ldo_process_config() and ->o_process_config(). As a
 417  * result, obd_setup() and obd_process_config() branch and call one XOR
 418  * another.
 419  *
 420  * Yet neither lu_device_type_operations::ldto_device_fini() nor
 421  * lu_device_type_operations::ldto_device_free() fully implement the
 422  * functionality of ->o_precleanup() and ->o_cleanup() they override. Hence,
 423  * obd_precleanup() and obd_cleanup() call both lu_device and obd operations.
 424  */
 425
 426 #define DECLARE_LU_VARS(ldt, d)                 \
 427         struct lu_device_type *ldt;       \
 428         struct lu_device *d
 429
 430 static inline int obd_setup(struct obd_device *obd, struct lustre_cfg *cfg)
 431 {
 432         int rc;
 433         DECLARE_LU_VARS(ldt, d);
 434         ENTRY;
 435
 436         ldt = obd->obd_type->typ_lu;
 437         if (ldt != NULL) {
 438                 struct lu_env env;
 439
 440                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 441                 if (rc == 0) {
 442                         d = ldt->ldt_ops->ldto_device_alloc(&env, ldt, cfg);
 443                         lu_env_fini(&env);
 444                         if (!IS_ERR(d)) {
 445                                 obd->obd_lu_dev = d;
 446                                 d->ld_obd = obd;
 447                                 rc = 0;
 448                         } else
 449                                 rc = PTR_ERR(d);
 450                 }
 451         } else {
 452                 OBD_CHECK_DT_OP(obd, setup, -EOPNOTSUPP);
 453                 OBD_COUNTER_INCREMENT(obd, setup);
 454                 rc = OBP(obd, setup)(obd, cfg);
 455         }
 456         RETURN(rc);
 457 }
 458
 459 static inline int obd_precleanup(struct obd_device *obd,
 460                                  enum obd_cleanup_stage cleanup_stage)
 461 {
 462         int rc;
 463         DECLARE_LU_VARS(ldt, d);
 464         ENTRY;
 465
 466         OBD_CHECK_DEV(obd);
 467         ldt = obd->obd_type->typ_lu;
 468         d = obd->obd_lu_dev;
 469         if (ldt != NULL && d != NULL) {
 470                 if (cleanup_stage == OBD_CLEANUP_EXPORTS) {
 471                         struct lu_env env;
 472
 473                         rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 474                         if (rc == 0) {
 475                                 ldt->ldt_ops->ldto_device_fini(&env, d);
 476                                 lu_env_fini(&env);
 477                         }
 478                 }
 479         }
 480         OBD_CHECK_DT_OP(obd, precleanup, 0);
 481         OBD_COUNTER_INCREMENT(obd, precleanup);
 482
 483         rc = OBP(obd, precleanup)(obd, cleanup_stage);
 484         RETURN(rc);
 485 }
 486
 487 static inline int obd_cleanup(struct obd_device *obd)
 488 {
 489         int rc;
 490         DECLARE_LU_VARS(ldt, d);
 491         ENTRY;
 492
 493         OBD_CHECK_DEV(obd);
 494
 495         ldt = obd->obd_type->typ_lu;
 496         d = obd->obd_lu_dev;
 497         if (ldt != NULL && d != NULL) {
 498                 struct lu_env env;
 499
 500                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 501                 if (rc == 0) {
 502                         ldt->ldt_ops->ldto_device_free(&env, d);
 503                         lu_env_fini(&env);
 504                         obd->obd_lu_dev = NULL;
 505                 }
 506         }
 507         OBD_CHECK_DT_OP(obd, cleanup, 0);
 508         OBD_COUNTER_INCREMENT(obd, cleanup);
 509
 510         rc = OBP(obd, cleanup)(obd);
 511         RETURN(rc);
 512 }
 513
 514 static inline int
 515 obd_process_config(struct obd_device *obd, int datalen, void *data)
 516 {
 517         int rc;
 518         DECLARE_LU_VARS(ldt, d);
 519         ENTRY;
 520
 521         OBD_CHECK_DEV(obd);
 522
 523         ldt = obd->obd_type->typ_lu;
 524         d = obd->obd_lu_dev;
 525         if (ldt != NULL && d != NULL) {
 526                 struct lu_env env;
 527
 528                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 529                 if (rc == 0) {
 530                         rc = d->ld_ops->ldo_process_config(&env, d, data);
 531                         lu_env_fini(&env);
 532                 }
 533         } else {
 534                 OBD_CHECK_DT_OP(obd, process_config, -EOPNOTSUPP);
 535                 rc = OBP(obd, process_config)(obd, datalen, data);
 536         }
 537         OBD_COUNTER_INCREMENT(obd, process_config);
 538
 539         RETURN(rc);
 540 }
 541
 542 /* Pack an in-memory MD struct for storage on disk.
 543  * Returns +ve size of packed MD (0 for free), or -ve error.
 544  *
 545  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 546  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 547  * If @*disk_tgt == NULL, it will be allocated
 548  */
 549 static inline int obd_packmd(struct obd_export *exp,
 550                              struct lov_mds_md **disk_tgt,
 551                              struct lov_stripe_md *mem_src)
 552 {
 553         int rc;
 554         ENTRY;
 555
 556         EXP_CHECK_DT_OP(exp, packmd);
 557         EXP_COUNTER_INCREMENT(exp, packmd);
 558
 559         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 560         RETURN(rc);
 561 }
 562
 563 static inline int obd_size_diskmd(struct obd_export *exp,
 564                                   struct lov_stripe_md *mem_src)
 565 {
 566         return obd_packmd(exp, NULL, mem_src);
 567 }
 568
 569 /* helper functions */
 570 static inline int obd_alloc_diskmd(struct obd_export *exp,
 571                                    struct lov_mds_md **disk_tgt)
 572 {
 573         LASSERT(disk_tgt);
 574         LASSERT(*disk_tgt == NULL);
 575         return obd_packmd(exp, disk_tgt, NULL);
 576 }
 577
 578 static inline int obd_free_diskmd(struct obd_export *exp,
 579                                   struct lov_mds_md **disk_tgt)
 580 {
 581         LASSERT(disk_tgt);
 582         LASSERT(*disk_tgt);
 583         return obd_packmd(exp, disk_tgt, NULL);
 584 }
 585
 586 /* Unpack an MD struct from disk to in-memory format.
 587  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 588  *
 589  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 590  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 591  * If @*mem_tgt == NULL, it will be allocated
 592  */
 593 static inline int obd_unpackmd(struct obd_export *exp,
 594                                struct lov_stripe_md **mem_tgt,
 595                                struct lov_mds_md *disk_src,
 596                                int disk_len)
 597 {
 598         int rc;
 599         ENTRY;
 600
 601         EXP_CHECK_DT_OP(exp, unpackmd);
 602         EXP_COUNTER_INCREMENT(exp, unpackmd);
 603
 604         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 605         RETURN(rc);
 606 }
 607
 608 /* helper functions */
 609 static inline int obd_alloc_memmd(struct obd_export *exp,
 610                                   struct lov_stripe_md **mem_tgt)
 611 {
 612         LASSERT(mem_tgt);
 613         LASSERT(*mem_tgt == NULL);
 614         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 615 }
 616
 617 static inline int obd_free_memmd(struct obd_export *exp,
 618                                  struct lov_stripe_md **mem_tgt)
 619 {
 620         int rc;
 621
 622         LASSERT(mem_tgt);
 623         LASSERT(*mem_tgt);
 624         rc = obd_unpackmd(exp, mem_tgt, NULL, 0);
 625         *mem_tgt = NULL;
 626         return rc;
 627 }
 628
 629 static inline int obd_checkmd(struct obd_export *exp,
 630                               struct obd_export *md_exp,
 631                               struct lov_stripe_md *mem_tgt)
 632 {
 633         int rc;
 634         ENTRY;
 635
 636         EXP_CHECK_DT_OP(exp, checkmd);
 637         EXP_COUNTER_INCREMENT(exp, checkmd);
 638
 639         rc = OBP(exp->exp_obd, checkmd)(exp, md_exp, mem_tgt);
 640         RETURN(rc);
 641 }
 642
 643 static inline int obd_precreate(struct obd_export *exp)
 644 {
 645         int rc;
 646         ENTRY;
 647
 648         EXP_CHECK_DT_OP(exp, precreate);
 649         OBD_COUNTER_INCREMENT(exp->exp_obd, precreate);
 650
 651         rc = OBP(exp->exp_obd, precreate)(exp);
 652         RETURN(rc);
 653 }
 654
 655 static inline int obd_create(struct obd_export *exp, struct obdo *obdo,
 656                              struct lov_stripe_md **ea,
 657                              struct obd_trans_info *oti)
 658 {
 659         int rc;
 660         ENTRY;
 661
 662         EXP_CHECK_DT_OP(exp, create);
 663         EXP_COUNTER_INCREMENT(exp, create);
 664
 665         rc = OBP(exp->exp_obd, create)(exp, obdo, ea, oti);
 666         RETURN(rc);
 667 }
 668
 669 static inline int obd_destroy(struct obd_export *exp, struct obdo *obdo,
 670                               struct lov_stripe_md *ea,
 671                               struct obd_trans_info *oti,
 672                               struct obd_export *md_exp)
 673 {
 674         int rc;
 675         ENTRY;
 676
 677         EXP_CHECK_DT_OP(exp, destroy);
 678         EXP_COUNTER_INCREMENT(exp, destroy);
 679
 680         rc = OBP(exp->exp_obd, destroy)(exp, obdo, ea, oti, md_exp);
 681         RETURN(rc);
 682 }
 683
 684 static inline int obd_getattr(struct obd_export *exp, struct obd_info *oinfo)
 685 {
 686         int rc;
 687         ENTRY;
 688
 689         EXP_CHECK_DT_OP(exp, getattr);
 690         EXP_COUNTER_INCREMENT(exp, getattr);
 691
 692         rc = OBP(exp->exp_obd, getattr)(exp, oinfo);
 693         RETURN(rc);
 694 }
 695
 696 static inline int obd_getattr_async(struct obd_export *exp,
 697                                     struct obd_info *oinfo,
 698                                     struct ptlrpc_request_set *set)
 699 {
 700         int rc;
 701         ENTRY;
 702
 703         EXP_CHECK_DT_OP(exp, getattr_async);
 704         EXP_COUNTER_INCREMENT(exp, getattr_async);
 705
 706         rc = OBP(exp->exp_obd, getattr_async)(exp, oinfo, set);
 707         RETURN(rc);
 708 }
 709
 710 static inline int obd_setattr(struct obd_export *exp, struct obd_info *oinfo,
 711                               struct obd_trans_info *oti)
 712 {
 713         int rc;
 714         ENTRY;
 715
 716         EXP_CHECK_DT_OP(exp, setattr);
 717         EXP_COUNTER_INCREMENT(exp, setattr);
 718
 719         rc = OBP(exp->exp_obd, setattr)(exp, oinfo, oti);
 720         RETURN(rc);
 721 }
 722
 723 /* This performs all the requests set init/wait/destroy actions. */
 724 static inline int obd_setattr_rqset(struct obd_export *exp,
 725                                     struct obd_info *oinfo,
 726                                     struct obd_trans_info *oti)
 727 {
 728         struct ptlrpc_request_set *set = NULL;
 729         int rc;
 730         ENTRY;
 731
 732         EXP_CHECK_DT_OP(exp, setattr_async);
 733         EXP_COUNTER_INCREMENT(exp, setattr_async);
 734
 735         set =  ptlrpc_prep_set();
 736         if (set == NULL)
 737                 RETURN(-ENOMEM);
 738
 739         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 740         if (rc == 0)
 741                 rc = ptlrpc_set_wait(set);
 742         ptlrpc_set_destroy(set);
 743         RETURN(rc);
 744 }
 745
 746 /* This adds all the requests into @set if @set != NULL, otherwise
 747    all requests are sent asynchronously without waiting for response. */
 748 static inline int obd_setattr_async(struct obd_export *exp,
 749                                     struct obd_info *oinfo,
 750                                     struct obd_trans_info *oti,
 751                                     struct ptlrpc_request_set *set)
 752 {
 753         int rc;
 754         ENTRY;
 755
 756         EXP_CHECK_DT_OP(exp, setattr_async);
 757         EXP_COUNTER_INCREMENT(exp, setattr_async);
 758
 759         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 760         RETURN(rc);
 761 }
 762
 763 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 764                                int priority)
 765 {
 766         struct obd_device *obd = imp->imp_obd;
 767         int rc;
 768         ENTRY;
 769
 770         OBD_CHECK_DEV_ACTIVE(obd);
 771         OBD_CHECK_DT_OP(obd, add_conn, -EOPNOTSUPP);
 772         OBD_COUNTER_INCREMENT(obd, add_conn);
 773
 774         rc = OBP(obd, add_conn)(imp, uuid, priority);
 775         RETURN(rc);
 776 }
 777
 778 static inline int obd_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
 779 {
 780         struct obd_device *obd = imp->imp_obd;
 781         int rc;
 782         ENTRY;
 783
 784         OBD_CHECK_DEV_ACTIVE(obd);
 785         OBD_CHECK_DT_OP(obd, del_conn, -EOPNOTSUPP);
 786         OBD_COUNTER_INCREMENT(obd, del_conn);
 787
 788         rc = OBP(obd, del_conn)(imp, uuid);
 789         RETURN(rc);
 790 }
 791
 792 static inline struct obd_uuid *obd_get_uuid(struct obd_export *exp)
 793 {
 794         struct obd_uuid *uuid;
 795         ENTRY;
 796
 797         OBD_CHECK_DT_OP(exp->exp_obd, get_uuid, NULL);
 798         EXP_COUNTER_INCREMENT(exp, get_uuid);
 799
 800         uuid = OBP(exp->exp_obd, get_uuid)(exp);
 801         RETURN(uuid);
 802 }
 803
 804 static inline int obd_connect(const struct lu_env *env,
 805                               struct lustre_handle *conn,struct obd_device *obd,
 806                               struct obd_uuid *cluuid,
 807                               struct obd_connect_data *d,
 808                               void *localdata)
 809 {
 810         int rc;
 811         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 812                                                    * check */
 813         ENTRY;
 814
 815         OBD_CHECK_DEV_ACTIVE(obd);
 816         OBD_CHECK_DT_OP(obd, connect, -EOPNOTSUPP);
 817         OBD_COUNTER_INCREMENT(obd, connect);
 818
 819         rc = OBP(obd, connect)(env, conn, obd, cluuid, d, localdata);
 820         /* check that only subset is granted */
 821         LASSERT(ergo(d != NULL,
 822                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 823         RETURN(rc);
 824 }
 825
 826 static inline int obd_reconnect(const struct lu_env *env,
 827                                 struct obd_export *exp,
 828                                 struct obd_device *obd,
 829                                 struct obd_uuid *cluuid,
 830                                 struct obd_connect_data *d,
 831                                 void *localdata)
 832 {
 833         int rc;
 834         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 835                                                    * check */
 836
 837         ENTRY;
 838
 839         OBD_CHECK_DEV_ACTIVE(obd);
 840         OBD_CHECK_DT_OP(obd, reconnect, 0);
 841         OBD_COUNTER_INCREMENT(obd, reconnect);
 842
 843         rc = OBP(obd, reconnect)(env, exp, obd, cluuid, d, localdata);
 844         /* check that only subset is granted */
 845         LASSERT(ergo(d != NULL,
 846                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 847         RETURN(rc);
 848 }
 849
 850 static inline int obd_disconnect(struct obd_export *exp)
 851 {
 852         int rc;
 853         ENTRY;
 854
 855         EXP_CHECK_DT_OP(exp, disconnect);
 856         EXP_COUNTER_INCREMENT(exp, disconnect);
 857
 858         rc = OBP(exp->exp_obd, disconnect)(exp);
 859         RETURN(rc);
 860 }
 861
 862 static inline int obd_fid_init(struct obd_export *exp)
 863 {
 864         int rc;
 865         ENTRY;
 866
 867         OBD_CHECK_DT_OP(exp->exp_obd, fid_init, 0);
 868         EXP_COUNTER_INCREMENT(exp, fid_init);
 869
 870         rc = OBP(exp->exp_obd, fid_init)(exp);
 871         RETURN(rc);
 872 }
 873
 874 static inline int obd_fid_fini(struct obd_export *exp)
 875 {
 876         int rc;
 877         ENTRY;
 878
 879         OBD_CHECK_DT_OP(exp->exp_obd, fid_fini, 0);
 880         EXP_COUNTER_INCREMENT(exp, fid_fini);
 881
 882         rc = OBP(exp->exp_obd, fid_fini)(exp);
 883         RETURN(rc);
 884 }
 885
 886 static inline int obd_fid_alloc(struct obd_export *exp,
 887                                 struct lu_fid *fid,
 888                                 struct md_op_data *op_data)
 889 {
 890         int rc;
 891         ENTRY;
 892
 893         EXP_CHECK_DT_OP(exp, fid_alloc);
 894         EXP_COUNTER_INCREMENT(exp, fid_alloc);
 895
 896         rc = OBP(exp->exp_obd, fid_alloc)(exp, fid, op_data);
 897         RETURN(rc);
 898 }
 899
 900 static inline int obd_fid_delete(struct obd_export *exp,
 901                                  const struct lu_fid *fid)
 902 {
 903         int rc;
 904         ENTRY;
 905
 906         EXP_CHECK_DT_OP(exp, fid_delete);
 907         EXP_COUNTER_INCREMENT(exp, fid_delete);
 908
 909         rc = OBP(exp->exp_obd, fid_delete)(exp, fid);
 910         RETURN(rc);
 911 }
 912
 913 static inline int obd_ping(struct obd_export *exp)
 914 {
 915         int rc;
 916         ENTRY;
 917
 918         OBD_CHECK_DT_OP(exp->exp_obd, ping, 0);
 919         EXP_COUNTER_INCREMENT(exp, ping);
 920
 921         rc = OBP(exp->exp_obd, ping)(exp);
 922         RETURN(rc);
 923 }
 924
 925 static inline int obd_pool_new(struct obd_device *obd, char *poolname)
 926 {
 927         int rc;
 928         ENTRY;
 929
 930         OBD_CHECK_DT_OP(obd, pool_new, -EOPNOTSUPP);
 931         OBD_COUNTER_INCREMENT(obd, pool_new);
 932
 933         rc = OBP(obd, pool_new)(obd, poolname);
 934         RETURN(rc);
 935 }
 936
 937 static inline int obd_pool_del(struct obd_device *obd, char *poolname)
 938 {
 939         int rc;
 940         ENTRY;
 941
 942         OBD_CHECK_DT_OP(obd, pool_del, -EOPNOTSUPP);
 943         OBD_COUNTER_INCREMENT(obd, pool_del);
 944
 945         rc = OBP(obd, pool_del)(obd, poolname);
 946         RETURN(rc);
 947 }
 948
 949 static inline int obd_pool_add(struct obd_device *obd, char *poolname, char *ostname)
 950 {
 951         int rc;
 952         ENTRY;
 953
 954         OBD_CHECK_DT_OP(obd, pool_add, -EOPNOTSUPP);
 955         OBD_COUNTER_INCREMENT(obd, pool_add);
 956
 957         rc = OBP(obd, pool_add)(obd, poolname, ostname);
 958         RETURN(rc);
 959 }
 960
 961 static inline int obd_pool_rem(struct obd_device *obd, char *poolname, char *ostname)
 962 {
 963         int rc;
 964         ENTRY;
 965
 966         OBD_CHECK_DT_OP(obd, pool_rem, -EOPNOTSUPP);
 967         OBD_COUNTER_INCREMENT(obd, pool_rem);
 968
 969         rc = OBP(obd, pool_rem)(obd, poolname, ostname);
 970         RETURN(rc);
 971 }
 972
 973 static inline int obd_init_export(struct obd_export *exp)
 974 {
 975         int rc = 0;
 976
 977         ENTRY;
 978         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 979             OBP((exp)->exp_obd, init_export))
 980                 rc = OBP(exp->exp_obd, init_export)(exp);
 981         RETURN(rc);
 982 }
 983
 984 static inline int obd_destroy_export(struct obd_export *exp)
 985 {
 986         ENTRY;
 987         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
 988             OBP((exp)->exp_obd, destroy_export))
 989                 OBP(exp->exp_obd, destroy_export)(exp);
 990         RETURN(0);
 991 }
 992
 993 static inline int obd_extent_calc(struct obd_export *exp,
 994                                   struct lov_stripe_md *md,
 995                                   int cmd, obd_off *offset)
 996 {
 997         int rc;
 998         ENTRY;
 999         EXP_CHECK_DT_OP(exp, extent_calc);
1000         rc = OBP(exp->exp_obd, extent_calc)(exp, md, cmd, offset);
1001         RETURN(rc);
1002 }
1003
1004 static inline struct dentry *
1005 obd_lvfs_fid2dentry(struct obd_export *exp, __u64 id_ino, __u32 gen, __u64 gr)
1006 {
1007         LASSERT(exp->exp_obd);
1008
1009         return lvfs_fid2dentry(&exp->exp_obd->obd_lvfs_ctxt, id_ino, gen, gr,
1010                                exp->exp_obd);
1011 }
1012
1013 static inline int
1014 obd_lvfs_open_llog(struct obd_export *exp, __u64 id_ino, struct dentry *dentry)
1015 {
1016         LASSERT(exp->exp_obd);
1017         CERROR("FIXME what's the story here?  This needs to be an obd fn?\n");
1018 #if 0
1019         return lvfs_open_llog(&exp->exp_obd->obd_lvfs_ctxt, id_ino,
1020                               dentry, exp->exp_obd);
1021 #endif
1022         return 0;
1023 }
1024
1025 #ifndef time_before
1026 #define time_before(t1, t2) ((long)t2 - (long)t1 > 0)
1027 #endif
1028
1029 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1030  * If the cache is older than @max_age we will get a new value from the
1031  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1032 static inline int obd_statfs_async(struct obd_device *obd,
1033                                    struct obd_info *oinfo,
1034                                    __u64 max_age,
1035                                    struct ptlrpc_request_set *rqset)
1036 {
1037         int rc = 0;
1038         ENTRY;
1039
1040         if (obd == NULL)
1041                 RETURN(-EINVAL);
1042
1043         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1044         OBD_COUNTER_INCREMENT(obd, statfs);
1045
1046         CDEBUG(D_SUPER, "%s: osfs %p age "LPU64", max_age "LPU64"\n",
1047                obd->obd_name, &obd->obd_osfs, obd->obd_osfs_age, max_age);
1048         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1049                 rc = OBP(obd, statfs_async)(obd, oinfo, max_age, rqset);
1050         } else {
1051                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1052                        " objects "LPU64"/"LPU64"\n",
1053                        obd->obd_name, &obd->obd_osfs,
1054                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1055                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1056                 spin_lock(&obd->obd_osfs_lock);
1057                 memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
1058                 spin_unlock(&obd->obd_osfs_lock);
1059                 oinfo->oi_flags |= OBD_STATFS_FROM_CACHE;
1060                 if (oinfo->oi_cb_up)
1061                         oinfo->oi_cb_up(oinfo, 0);
1062         }
1063         RETURN(rc);
1064 }
1065
1066 static inline int obd_statfs_rqset(struct obd_device *obd,
1067                                    struct obd_statfs *osfs, __u64 max_age,
1068                                    __u32 flags)
1069 {
1070         struct ptlrpc_request_set *set = NULL;
1071         struct obd_info oinfo = { { { 0 } } };
1072         int rc = 0;
1073         ENTRY;
1074
1075         set =  ptlrpc_prep_set();
1076         if (set == NULL)
1077                 RETURN(-ENOMEM);
1078
1079         oinfo.oi_osfs = osfs;
1080         oinfo.oi_flags = flags;
1081         rc = obd_statfs_async(obd, &oinfo, max_age, set);
1082         if (rc == 0)
1083                 rc = ptlrpc_set_wait(set);
1084         ptlrpc_set_destroy(set);
1085         RETURN(rc);
1086 }
1087
1088 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1089  * If the cache is older than @max_age we will get a new value from the
1090  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1091 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
1092                              __u64 max_age, __u32 flags)
1093 {
1094         int rc = 0;
1095         ENTRY;
1096
1097         if (obd == NULL)
1098                 RETURN(-EINVAL);
1099
1100         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1101         OBD_COUNTER_INCREMENT(obd, statfs);
1102
1103         CDEBUG(D_SUPER, "osfs "LPU64", max_age "LPU64"\n",
1104                obd->obd_osfs_age, max_age);
1105         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1106                 rc = OBP(obd, statfs)(obd, osfs, max_age, flags);
1107                 if (rc == 0) {
1108                         spin_lock(&obd->obd_osfs_lock);
1109                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
1110                         obd->obd_osfs_age = cfs_time_current_64();
1111                         spin_unlock(&obd->obd_osfs_lock);
1112                 }
1113         } else {
1114                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1115                        " objects "LPU64"/"LPU64"\n",
1116                        obd->obd_name, &obd->obd_osfs,
1117                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1118                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1119                 spin_lock(&obd->obd_osfs_lock);
1120                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
1121                 spin_unlock(&obd->obd_osfs_lock);
1122         }
1123         RETURN(rc);
1124 }
1125
1126 static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
1127                            struct lov_stripe_md *ea, obd_size start,
1128                            obd_size end, void *capa)
1129 {
1130         int rc;
1131         ENTRY;
1132
1133         OBD_CHECK_DT_OP(exp->exp_obd, sync, -EOPNOTSUPP);
1134         EXP_COUNTER_INCREMENT(exp, sync);
1135
1136         rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end, capa);
1137         RETURN(rc);
1138 }
1139
1140 static inline int obd_punch_rqset(struct obd_export *exp,
1141                                   struct obd_info *oinfo,
1142                                   struct obd_trans_info *oti)
1143 {
1144         struct ptlrpc_request_set *set = NULL;
1145         int rc;
1146         ENTRY;
1147
1148         EXP_CHECK_DT_OP(exp, punch);
1149         EXP_COUNTER_INCREMENT(exp, punch);
1150
1151         set =  ptlrpc_prep_set();
1152         if (set == NULL)
1153                 RETURN(-ENOMEM);
1154
1155         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, set);
1156         if (rc == 0)
1157                 rc = ptlrpc_set_wait(set);
1158         ptlrpc_set_destroy(set);
1159         RETURN(rc);
1160 }
1161
1162 static inline int obd_punch(struct obd_export *exp, struct obd_info *oinfo,
1163                             struct obd_trans_info *oti,
1164                             struct ptlrpc_request_set *rqset)
1165 {
1166         int rc;
1167         ENTRY;
1168
1169         EXP_CHECK_DT_OP(exp, punch);
1170         EXP_COUNTER_INCREMENT(exp, punch);
1171
1172         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, rqset);
1173         RETURN(rc);
1174 }
1175
1176 static inline int obd_brw(int cmd, struct obd_export *exp,
1177                           struct obd_info *oinfo, obd_count oa_bufs,
1178                           struct brw_page *pg, struct obd_trans_info *oti)
1179 {
1180         int rc;
1181         ENTRY;
1182
1183         EXP_CHECK_DT_OP(exp, brw);
1184         EXP_COUNTER_INCREMENT(exp, brw);
1185
1186         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
1187                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
1188                        "or OBD_BRW_CHECK\n");
1189                 LBUG();
1190         }
1191
1192         rc = OBP(exp->exp_obd, brw)(cmd, exp, oinfo, oa_bufs, pg, oti);
1193         RETURN(rc);
1194 }
1195
1196 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
1197                              int objcount, struct obd_ioobj *obj,
1198                              struct niobuf_remote *remote, int *pages,
1199                              struct niobuf_local *local,
1200                              struct obd_trans_info *oti,
1201                              struct lustre_capa *capa)
1202 {
1203         int rc;
1204         ENTRY;
1205
1206         EXP_CHECK_DT_OP(exp, preprw);
1207         EXP_COUNTER_INCREMENT(exp, preprw);
1208
1209         rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, remote,
1210                                        pages, local, oti, capa);
1211         RETURN(rc);
1212 }
1213
1214 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
1215                                int objcount, struct obd_ioobj *obj,
1216                                struct niobuf_remote *rnb, int pages,
1217                                struct niobuf_local *local,
1218                                struct obd_trans_info *oti, int rc)
1219 {
1220         ENTRY;
1221
1222         EXP_CHECK_DT_OP(exp, commitrw);
1223         EXP_COUNTER_INCREMENT(exp, commitrw);
1224
1225         rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj,
1226                                          rnb, pages, local, oti, rc);
1227         RETURN(rc);
1228 }
1229
1230 static inline int obd_merge_lvb(struct obd_export *exp,
1231                                 struct lov_stripe_md *lsm,
1232                                 struct ost_lvb *lvb, int kms_only)
1233 {
1234         int rc;
1235         ENTRY;
1236
1237         EXP_CHECK_DT_OP(exp, merge_lvb);
1238         EXP_COUNTER_INCREMENT(exp, merge_lvb);
1239
1240         rc = OBP(exp->exp_obd, merge_lvb)(exp, lsm, lvb, kms_only);
1241         RETURN(rc);
1242 }
1243
1244 static inline int obd_adjust_kms(struct obd_export *exp,
1245                                  struct lov_stripe_md *lsm, obd_off size,
1246                                  int shrink)
1247 {
1248         int rc;
1249         ENTRY;
1250
1251         EXP_CHECK_DT_OP(exp, adjust_kms);
1252         EXP_COUNTER_INCREMENT(exp, adjust_kms);
1253
1254         rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
1255         RETURN(rc);
1256 }
1257
1258 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1259                                 int len, void *karg, void *uarg)
1260 {
1261         int rc;
1262         ENTRY;
1263
1264         EXP_CHECK_DT_OP(exp, iocontrol);
1265         EXP_COUNTER_INCREMENT(exp, iocontrol);
1266
1267         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1268         RETURN(rc);
1269 }
1270
1271 static inline int obd_enqueue_rqset(struct obd_export *exp,
1272                                     struct obd_info *oinfo,
1273                                     struct ldlm_enqueue_info *einfo)
1274 {
1275         struct ptlrpc_request_set *set = NULL;
1276         int rc;
1277         ENTRY;
1278
1279         EXP_CHECK_DT_OP(exp, enqueue);
1280         EXP_COUNTER_INCREMENT(exp, enqueue);
1281
1282         set =  ptlrpc_prep_set();
1283         if (set == NULL)
1284                 RETURN(-ENOMEM);
1285
1286         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1287         if (rc == 0)
1288                 rc = ptlrpc_set_wait(set);
1289         ptlrpc_set_destroy(set);
1290         RETURN(rc);
1291 }
1292
1293 static inline int obd_enqueue(struct obd_export *exp,
1294                               struct obd_info *oinfo,
1295                               struct ldlm_enqueue_info *einfo,
1296                               struct ptlrpc_request_set *set)
1297 {
1298         int rc;
1299         ENTRY;
1300
1301         EXP_CHECK_DT_OP(exp, enqueue);
1302         EXP_COUNTER_INCREMENT(exp, enqueue);
1303
1304         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1305         RETURN(rc);
1306 }
1307
1308 static inline int obd_change_cbdata(struct obd_export *exp,
1309                                     struct lov_stripe_md *lsm,
1310                                     ldlm_iterator_t it, void *data)
1311 {
1312         int rc;
1313         ENTRY;
1314
1315         EXP_CHECK_DT_OP(exp, change_cbdata);
1316         EXP_COUNTER_INCREMENT(exp, change_cbdata);
1317
1318         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1319         RETURN(rc);
1320 }
1321
1322 static inline int obd_cancel(struct obd_export *exp,
1323                              struct lov_stripe_md *ea, __u32 mode,
1324                              struct lustre_handle *lockh)
1325 {
1326         int rc;
1327         ENTRY;
1328
1329         EXP_CHECK_DT_OP(exp, cancel);
1330         EXP_COUNTER_INCREMENT(exp, cancel);
1331
1332         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1333         RETURN(rc);
1334 }
1335
1336 static inline int obd_cancel_unused(struct obd_export *exp,
1337                                     struct lov_stripe_md *ea,
1338                                     int flags, void *opaque)
1339 {
1340         int rc;
1341         ENTRY;
1342
1343         EXP_CHECK_DT_OP(exp, cancel_unused);
1344         EXP_COUNTER_INCREMENT(exp, cancel_unused);
1345
1346         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1347         RETURN(rc);
1348 }
1349
1350 static inline int obd_pin(struct obd_export *exp, const struct lu_fid *fid,
1351                           struct obd_capa *oc, struct obd_client_handle *handle,
1352                           int flag)
1353 {
1354         int rc;
1355         ENTRY;
1356
1357         EXP_CHECK_DT_OP(exp, pin);
1358         EXP_COUNTER_INCREMENT(exp, pin);
1359
1360         rc = OBP(exp->exp_obd, pin)(exp, fid, oc, handle, flag);
1361         RETURN(rc);
1362 }
1363
1364 static inline int obd_unpin(struct obd_export *exp,
1365                             struct obd_client_handle *handle, int flag)
1366 {
1367         int rc;
1368         ENTRY;
1369
1370         EXP_CHECK_DT_OP(exp, unpin);
1371         EXP_COUNTER_INCREMENT(exp, unpin);
1372
1373         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1374         RETURN(rc);
1375 }
1376
1377
1378 static inline void obd_import_event(struct obd_device *obd,
1379                                     struct obd_import *imp,
1380                                     enum obd_import_event event)
1381 {
1382         ENTRY;
1383         if (!obd) {
1384                 CERROR("NULL device\n");
1385                 EXIT;
1386                 return;
1387         }
1388         if (obd->obd_set_up && OBP(obd, import_event)) {
1389                 OBD_COUNTER_INCREMENT(obd, import_event);
1390                 OBP(obd, import_event)(obd, imp, event);
1391         }
1392         EXIT;
1393 }
1394
1395 static inline int obd_llog_connect(struct obd_export *exp,
1396                                    struct llogd_conn_body *body)
1397 {
1398         int rc;
1399         ENTRY;
1400
1401         OBD_CHECK_DT_OP(exp->exp_obd, llog_connect, 0);
1402         EXP_COUNTER_INCREMENT(exp, llog_connect);
1403
1404         rc = OBP(exp->exp_obd, llog_connect)(exp, body);
1405         RETURN(rc);
1406 }
1407
1408
1409 static inline int obd_notify(struct obd_device *obd,
1410                              struct obd_device *watched,
1411                              enum obd_notify_event ev,
1412                              void *data)
1413 {
1414         int rc;
1415         ENTRY;
1416         OBD_CHECK_DEV(obd);
1417
1418         /* the check for async_recov is a complete hack - I'm hereby
1419            overloading the meaning to also mean "this was called from
1420            mds_postsetup".  I know that my mds is able to handle notifies
1421            by this point, and it needs to get them to execute mds_postrecov. */
1422         if (!obd->obd_set_up && !obd->obd_async_recov) {
1423                 CDEBUG(D_HA, "obd %s not set up\n", obd->obd_name);
1424                 RETURN(-EINVAL);
1425         }
1426
1427         if (!OBP(obd, notify)) {
1428                 CERROR("obd %s has no notify handler\n", obd->obd_name);
1429                 RETURN(-ENOSYS);
1430         }
1431
1432         OBD_COUNTER_INCREMENT(obd, notify);
1433         rc = OBP(obd, notify)(obd, watched, ev, data);
1434         RETURN(rc);
1435 }
1436
1437 static inline int obd_notify_observer(struct obd_device *observer,
1438                                       struct obd_device *observed,
1439                                       enum obd_notify_event ev,
1440                                       void *data)
1441 {
1442         int rc1;
1443         int rc2;
1444
1445         struct obd_notify_upcall *onu;
1446
1447         if (observer->obd_observer)
1448                 rc1 = obd_notify(observer->obd_observer, observed, ev, data);
1449         else
1450                 rc1 = 0;
1451         /*
1452          * Also, call non-obd listener, if any
1453          */
1454         onu = &observer->obd_upcall;
1455         if (onu->onu_upcall != NULL)
1456                 rc2 = onu->onu_upcall(observer, observed, ev, onu->onu_owner);
1457         else
1458                 rc2 = 0;
1459
1460         return rc1 ? rc1 : rc2;
1461 }
1462
1463 static inline int obd_quotacheck(struct obd_export *exp,
1464                                  struct obd_quotactl *oqctl)
1465 {
1466         int rc;
1467         ENTRY;
1468
1469         EXP_CHECK_DT_OP(exp, quotacheck);
1470         EXP_COUNTER_INCREMENT(exp, quotacheck);
1471
1472         rc = OBP(exp->exp_obd, quotacheck)(exp, oqctl);
1473         RETURN(rc);
1474 }
1475
1476 static inline int obd_quotactl(struct obd_export *exp,
1477                                struct obd_quotactl *oqctl)
1478 {
1479         int rc;
1480         ENTRY;
1481
1482         EXP_CHECK_DT_OP(exp, quotactl);
1483         EXP_COUNTER_INCREMENT(exp, quotactl);
1484
1485         rc = OBP(exp->exp_obd, quotactl)(exp, oqctl);
1486         RETURN(rc);
1487 }
1488
1489 static inline int obd_health_check(struct obd_device *obd)
1490 {
1491         /* returns: 0 on healthy
1492          *         >0 on unhealthy + reason code/flag
1493          *            however the only suppored reason == 1 right now
1494          *            We'll need to define some better reasons
1495          *            or flags in the future.
1496          *         <0 on error
1497          */
1498         int rc;
1499         ENTRY;
1500
1501         /* don't use EXP_CHECK_DT_OP, because NULL method is normal here */
1502         if (obd == NULL || !OBT(obd)) {
1503                 CERROR("cleaned up obd\n");
1504                 RETURN(-EOPNOTSUPP);
1505         }
1506         if (!obd->obd_set_up || obd->obd_stopping)
1507                 RETURN(0);
1508         if (!OBP(obd, health_check))
1509                 RETURN(0);
1510
1511         rc = OBP(obd, health_check)(obd);
1512         RETURN(rc);
1513 }
1514
1515 static inline int obd_register_observer(struct obd_device *obd,
1516                                         struct obd_device *observer)
1517 {
1518         ENTRY;
1519         OBD_CHECK_DEV(obd);
1520         if (obd->obd_observer && observer)
1521                 RETURN(-EALREADY);
1522         obd->obd_observer = observer;
1523         RETURN(0);
1524 }
1525
1526 #if 0
1527 static inline int obd_register_page_removal_cb(struct obd_export *exp,
1528                                                obd_page_removal_cb_t cb,
1529                                                obd_pin_extent_cb pin_cb)
1530 {
1531         int rc;
1532         ENTRY;
1533
1534         OBD_CHECK_DT_OP(exp->exp_obd, register_page_removal_cb, 0);
1535         OBD_COUNTER_INCREMENT(exp->exp_obd, register_page_removal_cb);
1536
1537         rc = OBP(exp->exp_obd, register_page_removal_cb)(exp, cb, pin_cb);
1538         RETURN(rc);
1539 }
1540
1541 static inline int obd_unregister_page_removal_cb(struct obd_export *exp,
1542                                                  obd_page_removal_cb_t cb)
1543 {
1544         int rc;
1545         ENTRY;
1546
1547         OBD_CHECK_DT_OP(exp->exp_obd, unregister_page_removal_cb, 0);
1548         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_page_removal_cb);
1549
1550         rc = OBP(exp->exp_obd, unregister_page_removal_cb)(exp, cb);
1551         RETURN(rc);
1552 }
1553
1554 static inline int obd_register_lock_cancel_cb(struct obd_export *exp,
1555                                               obd_lock_cancel_cb cb)
1556 {
1557         int rc;
1558         ENTRY;
1559
1560         OBD_CHECK_DT_OP(exp->exp_obd, register_lock_cancel_cb, 0);
1561         OBD_COUNTER_INCREMENT(exp->exp_obd, register_lock_cancel_cb);
1562
1563         rc = OBP(exp->exp_obd, register_lock_cancel_cb)(exp, cb);
1564         RETURN(rc);
1565 }
1566
1567 static inline int obd_unregister_lock_cancel_cb(struct obd_export *exp,
1568                                                  obd_lock_cancel_cb cb)
1569 {
1570         int rc;
1571         ENTRY;
1572
1573         OBD_CHECK_DT_OP(exp->exp_obd, unregister_lock_cancel_cb, 0);
1574         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_lock_cancel_cb);
1575
1576         rc = OBP(exp->exp_obd, unregister_lock_cancel_cb)(exp, cb);
1577         RETURN(rc);
1578 }
1579 #endif
1580
1581 /* metadata helpers */
1582 static inline int md_getstatus(struct obd_export *exp,
1583                                struct lu_fid *fid, struct obd_capa **pc)
1584 {
1585         int rc;
1586         ENTRY;
1587
1588         EXP_CHECK_MD_OP(exp, getstatus);
1589         EXP_MD_COUNTER_INCREMENT(exp, getstatus);
1590         rc = MDP(exp->exp_obd, getstatus)(exp, fid, pc);
1591         RETURN(rc);
1592 }
1593
1594 static inline int md_getattr(struct obd_export *exp, const struct lu_fid *fid,
1595                              struct obd_capa *oc, obd_valid valid, int ea_size,
1596                              struct ptlrpc_request **request)
1597 {
1598         int rc;
1599         ENTRY;
1600         EXP_CHECK_MD_OP(exp, getattr);
1601         EXP_MD_COUNTER_INCREMENT(exp, getattr);
1602         rc = MDP(exp->exp_obd, getattr)(exp, fid, oc, valid,
1603                                         ea_size, request);
1604         RETURN(rc);
1605 }
1606
1607 static inline int md_change_cbdata(struct obd_export *exp,
1608                                    const struct lu_fid *fid,
1609                                    ldlm_iterator_t it, void *data)
1610 {
1611         int rc;
1612         ENTRY;
1613         EXP_CHECK_MD_OP(exp, change_cbdata);
1614         EXP_MD_COUNTER_INCREMENT(exp, change_cbdata);
1615         rc = MDP(exp->exp_obd, change_cbdata)(exp, fid, it, data);
1616         RETURN(rc);
1617 }
1618
1619 static inline int md_close(struct obd_export *exp, struct md_op_data *op_data,
1620                            struct md_open_data *mod,
1621                            struct ptlrpc_request **request)
1622 {
1623         int rc;
1624         ENTRY;
1625         EXP_CHECK_MD_OP(exp, close);
1626         EXP_MD_COUNTER_INCREMENT(exp, close);
1627         rc = MDP(exp->exp_obd, close)(exp, op_data, mod, request);
1628         RETURN(rc);
1629 }
1630
1631 static inline int md_create(struct obd_export *exp, struct md_op_data *op_data,
1632                             const void *data, int datalen, int mode, __u32 uid,
1633                             __u32 gid, cfs_cap_t cap_effective, __u64 rdev,
1634                             struct ptlrpc_request **request)
1635 {
1636         int rc;
1637         ENTRY;
1638         EXP_CHECK_MD_OP(exp, create);
1639         EXP_MD_COUNTER_INCREMENT(exp, create);
1640         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1641                                        uid, gid, cap_effective, rdev, request);
1642         RETURN(rc);
1643 }
1644
1645 static inline int md_done_writing(struct obd_export *exp,
1646                                   struct md_op_data *op_data,
1647                                   struct md_open_data *mod)
1648 {
1649         int rc;
1650         ENTRY;
1651         EXP_CHECK_MD_OP(exp, done_writing);
1652         EXP_MD_COUNTER_INCREMENT(exp, done_writing);
1653         rc = MDP(exp->exp_obd, done_writing)(exp, op_data, mod);
1654         RETURN(rc);
1655 }
1656
1657 static inline int md_enqueue(struct obd_export *exp,
1658                              struct ldlm_enqueue_info *einfo,
1659                              struct lookup_intent *it,
1660                              struct md_op_data *op_data,
1661                              struct lustre_handle *lockh,
1662                              void *lmm, int lmmsize,
1663                              struct ptlrpc_request **req,
1664                              int extra_lock_flags)
1665 {
1666         int rc;
1667         ENTRY;
1668         EXP_CHECK_MD_OP(exp, enqueue);
1669         EXP_MD_COUNTER_INCREMENT(exp, enqueue);
1670         rc = MDP(exp->exp_obd, enqueue)(exp, einfo, it, op_data, lockh,
1671                                         lmm, lmmsize, req, extra_lock_flags);
1672         RETURN(rc);
1673 }
1674
1675 static inline int md_getattr_name(struct obd_export *exp,
1676                                   const struct lu_fid *fid, struct obd_capa *oc,
1677                                   const char *name, int namelen,
1678                                   obd_valid valid, int ea_size, __u32 suppgid,
1679                                   struct ptlrpc_request **request)
1680 {
1681         int rc;
1682         ENTRY;
1683         EXP_CHECK_MD_OP(exp, getattr_name);
1684         EXP_MD_COUNTER_INCREMENT(exp, getattr_name);
1685         rc = MDP(exp->exp_obd, getattr_name)(exp, fid, oc, name, namelen,
1686                                              valid, ea_size, suppgid, request);
1687         RETURN(rc);
1688 }
1689
1690 static inline int md_intent_lock(struct obd_export *exp,
1691                                  struct md_op_data *op_data, void *lmm,
1692                                  int lmmsize, struct lookup_intent *it,
1693                                  int flags, struct ptlrpc_request **reqp,
1694                                  ldlm_blocking_callback cb_blocking,
1695                                  int extra_lock_flags)
1696 {
1697         int rc;
1698         ENTRY;
1699         EXP_CHECK_MD_OP(exp, intent_lock);
1700         EXP_MD_COUNTER_INCREMENT(exp, intent_lock);
1701         rc = MDP(exp->exp_obd, intent_lock)(exp, op_data, lmm, lmmsize,
1702                                             it, flags, reqp, cb_blocking,
1703                                             extra_lock_flags);
1704         RETURN(rc);
1705 }
1706
1707 static inline int md_link(struct obd_export *exp, struct md_op_data *op_data,
1708                           struct ptlrpc_request **request)
1709 {
1710         int rc;
1711         ENTRY;
1712         EXP_CHECK_MD_OP(exp, link);
1713         EXP_MD_COUNTER_INCREMENT(exp, link);
1714         rc = MDP(exp->exp_obd, link)(exp, op_data, request);
1715         RETURN(rc);
1716 }
1717
1718 static inline int md_rename(struct obd_export *exp, struct md_op_data *op_data,
1719                             const char *old, int oldlen, const char *new,
1720                             int newlen, struct ptlrpc_request **request)
1721 {
1722         int rc;
1723         ENTRY;
1724         EXP_CHECK_MD_OP(exp, rename);
1725         EXP_MD_COUNTER_INCREMENT(exp, rename);
1726         rc = MDP(exp->exp_obd, rename)(exp, op_data, old, oldlen, new,
1727                                        newlen, request);
1728         RETURN(rc);
1729 }
1730
1731 static inline int md_is_subdir(struct obd_export *exp,
1732                                const struct lu_fid *pfid,
1733                                const struct lu_fid *cfid,
1734                                struct ptlrpc_request **request)
1735 {
1736         int rc;
1737         ENTRY;
1738         EXP_CHECK_MD_OP(exp, is_subdir);
1739         EXP_MD_COUNTER_INCREMENT(exp, is_subdir);
1740         rc = MDP(exp->exp_obd, is_subdir)(exp, pfid, cfid, request);
1741         RETURN(rc);
1742 }
1743
1744 static inline int md_setattr(struct obd_export *exp, struct md_op_data *op_data,
1745                              void *ea, int ealen, void *ea2, int ea2len,
1746                              struct ptlrpc_request **request,
1747                              struct md_open_data **mod)
1748 {
1749         int rc;
1750         ENTRY;
1751         EXP_CHECK_MD_OP(exp, setattr);
1752         EXP_MD_COUNTER_INCREMENT(exp, setattr);
1753         rc = MDP(exp->exp_obd, setattr)(exp, op_data, ea, ealen,
1754                                         ea2, ea2len, request, mod);
1755         RETURN(rc);
1756 }
1757
1758 static inline int md_sync(struct obd_export *exp, const struct lu_fid *fid,
1759                           struct obd_capa *oc, struct ptlrpc_request **request)
1760 {
1761         int rc;
1762         ENTRY;
1763         EXP_CHECK_MD_OP(exp, sync);
1764         EXP_MD_COUNTER_INCREMENT(exp, sync);
1765         rc = MDP(exp->exp_obd, sync)(exp, fid, oc, request);
1766         RETURN(rc);
1767 }
1768
1769 static inline int md_readpage(struct obd_export *exp, const struct lu_fid *fid,
1770                               struct obd_capa *oc, __u64 offset,
1771                               struct page *page,
1772                               struct ptlrpc_request **request)
1773 {
1774         int rc;
1775         ENTRY;
1776         EXP_CHECK_MD_OP(exp, readpage);
1777         EXP_MD_COUNTER_INCREMENT(exp, readpage);
1778         rc = MDP(exp->exp_obd, readpage)(exp, fid, oc, offset, page, request);
1779         RETURN(rc);
1780 }
1781
1782 static inline int md_unlink(struct obd_export *exp, struct md_op_data *op_data,
1783                             struct ptlrpc_request **request)
1784 {
1785         int rc;
1786         ENTRY;
1787         EXP_CHECK_MD_OP(exp, unlink);
1788         EXP_MD_COUNTER_INCREMENT(exp, unlink);
1789         rc = MDP(exp->exp_obd, unlink)(exp, op_data, request);
1790         RETURN(rc);
1791 }
1792
1793 static inline int md_get_lustre_md(struct obd_export *exp,
1794                                    struct ptlrpc_request *req,
1795                                    struct obd_export *dt_exp,
1796                                    struct obd_export *md_exp,
1797                                    struct lustre_md *md)
1798 {
1799         ENTRY;
1800         EXP_CHECK_MD_OP(exp, get_lustre_md);
1801         EXP_MD_COUNTER_INCREMENT(exp, get_lustre_md);
1802         RETURN(MDP(exp->exp_obd, get_lustre_md)(exp, req, dt_exp, md_exp, md));
1803 }
1804
1805 static inline int md_free_lustre_md(struct obd_export *exp,
1806                                     struct lustre_md *md)
1807 {
1808         ENTRY;
1809         EXP_CHECK_MD_OP(exp, free_lustre_md);
1810         EXP_MD_COUNTER_INCREMENT(exp, free_lustre_md);
1811         RETURN(MDP(exp->exp_obd, free_lustre_md)(exp, md));
1812 }
1813
1814 static inline int md_setxattr(struct obd_export *exp,
1815                               const struct lu_fid *fid, struct obd_capa *oc,
1816                               obd_valid valid, const char *name,
1817                               const char *input, int input_size,
1818                               int output_size, int flags, __u32 suppgid,
1819                               struct ptlrpc_request **request)
1820 {
1821         ENTRY;
1822         EXP_CHECK_MD_OP(exp, setxattr);
1823         EXP_MD_COUNTER_INCREMENT(exp, setxattr);
1824         RETURN(MDP(exp->exp_obd, setxattr)(exp, fid, oc, valid, name, input,
1825                                            input_size, output_size, flags,
1826                                            suppgid, request));
1827 }
1828
1829 static inline int md_getxattr(struct obd_export *exp,
1830                               const struct lu_fid *fid, struct obd_capa *oc,
1831                               obd_valid valid, const char *name,
1832                               const char *input, int input_size,
1833                               int output_size, int flags,
1834                               struct ptlrpc_request **request)
1835 {
1836         ENTRY;
1837         EXP_CHECK_MD_OP(exp, getxattr);
1838         EXP_MD_COUNTER_INCREMENT(exp, getxattr);
1839         RETURN(MDP(exp->exp_obd, getxattr)(exp, fid, oc, valid, name, input,
1840                                            input_size, output_size, flags,
1841                                            request));
1842 }
1843
1844 static inline int md_set_open_replay_data(struct obd_export *exp,
1845                                           struct obd_client_handle *och,
1846                                           struct ptlrpc_request *open_req)
1847 {
1848         ENTRY;
1849         EXP_CHECK_MD_OP(exp, set_open_replay_data);
1850         EXP_MD_COUNTER_INCREMENT(exp, set_open_replay_data);
1851         RETURN(MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req));
1852 }
1853
1854 static inline int md_clear_open_replay_data(struct obd_export *exp,
1855                                             struct obd_client_handle *och)
1856 {
1857         ENTRY;
1858         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
1859         EXP_MD_COUNTER_INCREMENT(exp, clear_open_replay_data);
1860         RETURN(MDP(exp->exp_obd, clear_open_replay_data)(exp, och));
1861 }
1862
1863 static inline int md_set_lock_data(struct obd_export *exp,
1864                                    __u64 *lockh, void *data)
1865 {
1866         ENTRY;
1867         EXP_CHECK_MD_OP(exp, set_lock_data);
1868         EXP_MD_COUNTER_INCREMENT(exp, set_lock_data);
1869         RETURN(MDP(exp->exp_obd, set_lock_data)(exp, lockh, data));
1870 }
1871
1872 static inline int md_cancel_unused(struct obd_export *exp,
1873                                    const struct lu_fid *fid,
1874                                    ldlm_policy_data_t *policy,
1875                                    ldlm_mode_t mode, int flags, void *opaque)
1876 {
1877         int rc;
1878         ENTRY;
1879
1880         EXP_CHECK_MD_OP(exp, cancel_unused);
1881         EXP_MD_COUNTER_INCREMENT(exp, cancel_unused);
1882
1883         rc = MDP(exp->exp_obd, cancel_unused)(exp, fid, policy, mode,
1884                                               flags, opaque);
1885         RETURN(rc);
1886 }
1887
1888 static inline ldlm_mode_t md_lock_match(struct obd_export *exp, int flags,
1889                                         const struct lu_fid *fid,
1890                                         ldlm_type_t type,
1891                                         ldlm_policy_data_t *policy,
1892                                         ldlm_mode_t mode,
1893                                         struct lustre_handle *lockh)
1894 {
1895         ENTRY;
1896         EXP_CHECK_MD_OP(exp, lock_match);
1897         EXP_MD_COUNTER_INCREMENT(exp, lock_match);
1898         RETURN(MDP(exp->exp_obd, lock_match)(exp, flags, fid, type,
1899                                              policy, mode, lockh));
1900 }
1901
1902 static inline int md_init_ea_size(struct obd_export *exp, int easize,
1903                                   int def_asize, int cookiesize)
1904 {
1905         ENTRY;
1906         EXP_CHECK_MD_OP(exp, init_ea_size);
1907         EXP_MD_COUNTER_INCREMENT(exp, init_ea_size);
1908         RETURN(MDP(exp->exp_obd, init_ea_size)(exp, easize, def_asize,
1909                                                cookiesize));
1910 }
1911
1912 static inline int md_get_remote_perm(struct obd_export *exp,
1913                                      const struct lu_fid *fid,
1914                                      struct obd_capa *oc, __u32 suppgid,
1915                                      struct ptlrpc_request **request)
1916 {
1917         ENTRY;
1918         EXP_CHECK_MD_OP(exp, get_remote_perm);
1919         EXP_MD_COUNTER_INCREMENT(exp, get_remote_perm);
1920         RETURN(MDP(exp->exp_obd, get_remote_perm)(exp, fid, oc, suppgid,
1921                                                   request));
1922 }
1923
1924 static inline int md_renew_capa(struct obd_export *exp, struct obd_capa *ocapa,
1925                                 renew_capa_cb_t cb)
1926 {
1927         int rc;
1928         ENTRY;
1929         EXP_CHECK_MD_OP(exp, renew_capa);
1930         EXP_MD_COUNTER_INCREMENT(exp, renew_capa);
1931         rc = MDP(exp->exp_obd, renew_capa)(exp, ocapa, cb);
1932         RETURN(rc);
1933 }
1934
1935 static inline int md_intent_getattr_async(struct obd_export *exp,
1936                                           struct md_enqueue_info *minfo,
1937                                           struct ldlm_enqueue_info *einfo)
1938 {
1939         int rc;
1940         ENTRY;
1941         EXP_CHECK_MD_OP(exp, intent_getattr_async);
1942         EXP_MD_COUNTER_INCREMENT(exp, intent_getattr_async);
1943         rc = MDP(exp->exp_obd, intent_getattr_async)(exp, minfo, einfo);
1944         RETURN(rc);
1945 }
1946
1947 static inline int md_revalidate_lock(struct obd_export *exp,
1948                                      struct lookup_intent *it,
1949                                      struct lu_fid *fid)
1950 {
1951         int rc;
1952         ENTRY;
1953         EXP_CHECK_MD_OP(exp, revalidate_lock);
1954         EXP_MD_COUNTER_INCREMENT(exp, revalidate_lock);
1955         rc = MDP(exp->exp_obd, revalidate_lock)(exp, it, fid);
1956         RETURN(rc);
1957 }
1958
1959
1960 /* OBD Metadata Support */
1961
1962 extern int obd_init_caches(void);
1963 extern void obd_cleanup_caches(void);
1964
1965 /* support routines */
1966 extern cfs_mem_cache_t *obdo_cachep;
1967
1968 #define OBDO_ALLOC(ptr)                                                       \
1969 do {                                                                          \
1970         OBD_SLAB_ALLOC_PTR((ptr), obdo_cachep);                               \
1971 } while(0)
1972
1973 #define OBDO_FREE(ptr)                                                        \
1974 do {                                                                          \
1975         OBD_SLAB_FREE_PTR((ptr), obdo_cachep);                                \
1976 } while(0)
1977
1978
1979 static inline void obdo2fid(struct obdo *oa, struct lu_fid *fid)
1980 {
1981         /* something here */
1982 }
1983
1984 static inline void fid2obdo(struct lu_fid *fid, struct obdo *oa)
1985 {
1986         /* something here */
1987 }
1988
1989 /* I'm as embarrassed about this as you are.
1990  *
1991  * <shaver> // XXX do not look into _superhack with remaining eye
1992  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
1993 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
1994
1995 /* sysctl.c */
1996 extern void obd_sysctl_init (void);
1997 extern void obd_sysctl_clean (void);
1998
1999 /* uuid.c  */
2000 typedef __u8 class_uuid_t[16];
2001 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
2002
2003 /* lustre_peer.c    */
2004 int lustre_uuid_to_peer(const char *uuid, lnet_nid_t *peer_nid, int index);
2005 int class_add_uuid(const char *uuid, __u64 nid);
2006 int class_del_uuid (const char *uuid);
2007 void class_init_uuidlist(void);
2008 void class_exit_uuidlist(void);
2009
2010 /* mea.c */
2011 int mea_name2idx(struct lmv_stripe_md *mea, const char *name, int namelen);
2012 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
2013
2014 /* prng.c */
2015 void ll_generate_random_uuid(class_uuid_t uuid_out);
2016
2017 #endif /* __LINUX_OBD_CLASS_H */