drivers/staging/lustre/lustre/include/obd_class.h

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, 2012, Intel Corporation.
  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
  40 #include "obd_support.h"
  41 #include "lustre_import.h"
  42 #include "lustre_net.h"
  43 #include "obd.h"
  44 #include "lustre_lib.h"
  45 #include "lustre/lustre_idl.h"
  46 #include "lprocfs_status.h"
  47
  48 #define OBD_STATFS_NODELAY      0x0001  /* requests should be send without delay
  49                                          * and resends for avoid deadlocks */
  50 #define OBD_STATFS_FROM_CACHE   0x0002  /* the statfs callback should not update
  51                                          * obd_osfs_age */
  52 #define OBD_STATFS_PTLRPCD      0x0004  /* requests will be sent via ptlrpcd
  53                                          * instead of a specific set. This
  54                                          * means that we cannot rely on the set
  55                                          * interpret routine to be called.
  56                                          * lov_statfs_fini() must thus be called
  57                                          * by the request interpret routine */
  58 #define OBD_STATFS_FOR_MDT0     0x0008  /* The statfs is only for retrieving
  59                                          * information from MDT0. */
  60 #define OBD_FL_PUNCH    0x00000001      /* To indicate it is punch operation */
  61
  62 /* OBD Device Declarations */
  63 extern struct obd_device *obd_devs[MAX_OBD_DEVICES];
  64 extern rwlock_t obd_dev_lock;
  65
  66 /* OBD Operations Declarations */
  67 struct obd_device *class_exp2obd(struct obd_export *);
  68 int class_handle_ioctl(unsigned int cmd, unsigned long arg);
  69 int lustre_get_jobid(char *jobid);
  70
  71 struct lu_device_type;
  72
  73 /* genops.c */
  74 extern struct list_head obd_types;
  75 struct obd_export *class_conn2export(struct lustre_handle *);
  76 int class_register_type(struct obd_ops *, struct md_ops *,
  77                         const char *nm, struct lu_device_type *ldt);
  78 int class_unregister_type(const char *nm);
  79
  80 struct obd_device *class_newdev(const char *type_name, const char *name);
  81 void class_release_dev(struct obd_device *obd);
  82
  83 int class_name2dev(const char *name);
  84 struct obd_device *class_name2obd(const char *name);
  85 int class_uuid2dev(struct obd_uuid *uuid);
  86 struct obd_device *class_find_client_obd(struct obd_uuid *tgt_uuid,
  87                                           const char *typ_name,
  88                                           struct obd_uuid *grp_uuid);
  89 struct obd_device *class_devices_in_group(struct obd_uuid *grp_uuid,
  90                                            int *next);
  91 struct obd_device *class_num2obd(int num);
  92
  93 int class_notify_sptlrpc_conf(const char *fsname, int namelen);
  94
  95 char *obd_export_nid2str(struct obd_export *exp);
  96
  97 int obd_connect_flags2str(char *page, int count, __u64 flags, char *sep);
  98
  99 int obd_zombie_impexp_init(void);
 100 void obd_zombie_impexp_stop(void);
 101 void obd_zombie_impexp_cull(void);
 102 void obd_zombie_barrier(void);
 103
 104 struct llog_handle;
 105 struct llog_rec_hdr;
 106 typedef int (*llog_cb_t)(const struct lu_env *, struct llog_handle *,
 107                          struct llog_rec_hdr *, void *);
 108 /* obd_config.c */
 109 int class_process_config(struct lustre_cfg *lcfg);
 110 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
 111                              struct lustre_cfg *lcfg, void *data);
 112 int class_attach(struct lustre_cfg *lcfg);
 113 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
 114 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg);
 115 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg);
 116 struct obd_device *class_incref(struct obd_device *obd,
 117                                 const char *scope, const void *source);
 118 void class_decref(struct obd_device *obd,
 119                   const char *scope, const void *source);
 120 void dump_exports(struct obd_device *obd, int locks);
 121 int class_config_llog_handler(const struct lu_env *env,
 122                               struct llog_handle *handle,
 123                               struct llog_rec_hdr *rec, void *data);
 124 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg);
 125 int class_add_uuid(const char *uuid, __u64 nid);
 126
 127 /*obdecho*/
 128 void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars);
 129
 130 #define CFG_F_START     0x01   /* Set when we start updating from a log */
 131 #define CFG_F_MARKER    0x02   /* We are within a maker */
 132 #define CFG_F_SKIP      0x04   /* We should ignore this cfg command */
 133 #define CFG_F_COMPAT146 0x08   /* Allow old-style logs */
 134 #define CFG_F_EXCLUDE   0x10   /* OST exclusion list */
 135
 136 /* Passed as data param to class_config_parse_llog */
 137 struct config_llog_instance {
 138         char           *cfg_obdname;
 139         void           *cfg_instance;
 140         struct super_block *cfg_sb;
 141         struct obd_uuid     cfg_uuid;
 142         llog_cb_t           cfg_callback;
 143         int              cfg_last_idx; /* for partial llog processing */
 144         int              cfg_flags;
 145 };
 146 int class_config_parse_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
 147                             char *name, struct config_llog_instance *cfg);
 148 enum {
 149         CONFIG_T_CONFIG  = 0,
 150         CONFIG_T_SPTLRPC = 1,
 151         CONFIG_T_RECOVER = 2,
 152         CONFIG_T_PARAMS  = 3,
 153         CONFIG_T_MAX     = 4
 154 };
 155
 156 #define PARAMS_FILENAME "params"
 157 #define LCTL_UPCALL     "lctl"
 158
 159 /* list of active configuration logs  */
 160 struct config_llog_data {
 161         struct ldlm_res_id        cld_resid;
 162         struct config_llog_instance cld_cfg;
 163         struct list_head                  cld_list_chain;
 164         atomic_t                cld_refcount;
 165         struct config_llog_data    *cld_sptlrpc;/* depended sptlrpc log */
 166         struct config_llog_data    *cld_params; /* common parameters log */
 167         struct config_llog_data    *cld_recover;/* imperative recover log */
 168         struct obd_export         *cld_mgcexp;
 169         struct mutex                cld_lock;
 170         int                      cld_type;
 171         unsigned int            cld_stopping:1, /* we were told to stop
 172                                                      * watching */
 173                                     cld_lostlock:1; /* lock not requeued */
 174         char                    cld_logname[0];
 175 };
 176
 177 struct lustre_profile {
 178         struct list_head       lp_list;
 179         char        *lp_profile;
 180         char        *lp_dt;
 181         char        *lp_md;
 182 };
 183
 184 struct lustre_profile *class_get_profile(const char *prof);
 185 void class_del_profile(const char *prof);
 186 void class_del_profiles(void);
 187
 188 #if LUSTRE_TRACKS_LOCK_EXP_REFS
 189
 190 void __class_export_add_lock_ref(struct obd_export *, struct ldlm_lock *);
 191 void __class_export_del_lock_ref(struct obd_export *, struct ldlm_lock *);
 192 extern void (*class_export_dump_hook)(struct obd_export *);
 193
 194 #else
 195
 196 #define __class_export_add_lock_ref(exp, lock)       do {} while (0)
 197 #define __class_export_del_lock_ref(exp, lock)       do {} while (0)
 198
 199 #endif
 200
 201 static inline void class_export_rpc_inc(struct obd_export *exp)
 202 {
 203         atomic_inc(&(exp)->exp_rpc_count);
 204         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",
 205                (exp), atomic_read(&(exp)->exp_rpc_count));
 206 }
 207
 208 static inline void class_export_rpc_dec(struct obd_export *exp)
 209 {
 210         LASSERT_ATOMIC_POS(&exp->exp_rpc_count);
 211         atomic_dec(&(exp)->exp_rpc_count);
 212         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",
 213                (exp), atomic_read(&(exp)->exp_rpc_count));
 214 }
 215
 216 #define class_export_lock_get(exp, lock)                                \
 217 ({                                                                    \
 218         atomic_inc(&(exp)->exp_locks_count);                    \
 219         __class_export_add_lock_ref(exp, lock);                  \
 220         CDEBUG(D_INFO, "lock GETting export %p : new locks_count %d\n", \
 221                (exp), atomic_read(&(exp)->exp_locks_count));    \
 222         class_export_get(exp);                                    \
 223 })
 224
 225 #define class_export_lock_put(exp, lock)                                \
 226 ({                                                                    \
 227         LASSERT_ATOMIC_POS(&exp->exp_locks_count);                    \
 228         atomic_dec(&(exp)->exp_locks_count);                    \
 229         __class_export_del_lock_ref(exp, lock);                  \
 230         CDEBUG(D_INFO, "lock PUTting export %p : new locks_count %d\n", \
 231                (exp), atomic_read(&(exp)->exp_locks_count));    \
 232         class_export_put(exp);                                    \
 233 })
 234
 235 #define class_export_cb_get(exp)                                        \
 236 ({                                                                    \
 237         atomic_inc(&(exp)->exp_cb_count);                          \
 238         CDEBUG(D_INFO, "callback GETting export %p : new cb_count %d\n",\
 239                (exp), atomic_read(&(exp)->exp_cb_count));          \
 240         class_export_get(exp);                                    \
 241 })
 242
 243 #define class_export_cb_put(exp)                                        \
 244 ({                                                                    \
 245         LASSERT_ATOMIC_POS(&exp->exp_cb_count);                  \
 246         atomic_dec(&(exp)->exp_cb_count);                          \
 247         CDEBUG(D_INFO, "callback PUTting export %p : new cb_count %d\n",\
 248                (exp), atomic_read(&(exp)->exp_cb_count));          \
 249         class_export_put(exp);                                    \
 250 })
 251
 252 /* genops.c */
 253 struct obd_export *class_export_get(struct obd_export *exp);
 254 void class_export_put(struct obd_export *exp);
 255 struct obd_export *class_new_export(struct obd_device *obddev,
 256                                     struct obd_uuid *cluuid);
 257 void class_unlink_export(struct obd_export *exp);
 258
 259 struct obd_import *class_import_get(struct obd_import *);
 260 void class_import_put(struct obd_import *);
 261 struct obd_import *class_new_import(struct obd_device *obd);
 262 void class_destroy_import(struct obd_import *exp);
 263
 264 struct obd_type *class_search_type(const char *name);
 265 struct obd_type *class_get_type(const char *name);
 266 void class_put_type(struct obd_type *type);
 267 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 268                   struct obd_uuid *cluuid);
 269 int class_disconnect(struct obd_export *exp);
 270 void class_fail_export(struct obd_export *exp);
 271 int class_manual_cleanup(struct obd_device *obd);
 272 static inline enum obd_option exp_flags_from_obd(struct obd_device *obd)
 273 {
 274         return ((obd->obd_fail ? OBD_OPT_FAILOVER : 0) |
 275                 (obd->obd_force ? OBD_OPT_FORCE : 0) |
 276                 (obd->obd_abort_recovery ? OBD_OPT_ABORT_RECOV : 0) |
 277                 0);
 278 }
 279
 280 struct inode;
 281 struct lu_attr;
 282 struct obdo;
 283 void obdo_refresh_inode(struct inode *dst, struct obdo *src, u32 valid);
 284
 285 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
 286 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, u32 valid);
 287 void md_from_obdo(struct md_op_data *op_data, struct obdo *oa, u32 valid);
 288
 289 #define OBT(dev)        (dev)->obd_type
 290 #define OBP(dev, op)    (dev)->obd_type->typ_dt_ops->o_ ## op
 291 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
 292 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 293
 294 /* Ensure obd_setup: used for cleanup which must be called
 295    while obd is stopping */
 296 static inline int obd_check_dev(struct obd_device *obd)
 297 {
 298         if (!obd) {
 299                 CERROR("NULL device\n");
 300                 return -ENODEV;
 301         }
 302         return 0;
 303 }
 304
 305 /* ensure obd_setup and !obd_stopping */
 306 static inline int obd_check_dev_active(struct obd_device *obd)
 307 {
 308         int rc;
 309
 310         rc = obd_check_dev(obd);
 311         if (rc)
 312                 return rc;
 313         if (!obd->obd_set_up || obd->obd_stopping) {
 314                 CERROR("Device %d not setup\n", obd->obd_minor);
 315                 return -ENODEV;
 316         }
 317         return rc;
 318 }
 319
 320 #define OBD_COUNTER_OFFSET(op)                            \
 321         ((offsetof(struct obd_ops, o_ ## op) -            \
 322           offsetof(struct obd_ops, o_iocontrol))                \
 323          / sizeof(((struct obd_ops *)(0))->o_iocontrol))
 324
 325 #define OBD_COUNTER_INCREMENT(obdx, op)                    \
 326         if ((obdx)->obd_stats != NULL) {                          \
 327                 unsigned int coffset;                        \
 328                 coffset = (unsigned int)((obdx)->obd_cntr_base) + \
 329                         OBD_COUNTER_OFFSET(op);            \
 330                 LASSERT(coffset < (obdx)->obd_stats->ls_num);     \
 331                 lprocfs_counter_incr((obdx)->obd_stats, coffset); \
 332         }
 333
 334 #define EXP_COUNTER_INCREMENT(export, op)                                   \
 335         if ((export)->exp_obd->obd_stats != NULL) {                       \
 336                 unsigned int coffset;                                   \
 337                 coffset = (unsigned int)((export)->exp_obd->obd_cntr_base) + \
 338                         OBD_COUNTER_OFFSET(op);                       \
 339                 LASSERT(coffset < (export)->exp_obd->obd_stats->ls_num);     \
 340                 lprocfs_counter_incr((export)->exp_obd->obd_stats, coffset); \
 341         }
 342
 343 #define MD_COUNTER_OFFSET(op)                              \
 344         ((offsetof(struct md_ops, m_ ## op) -              \
 345           offsetof(struct md_ops, m_getstatus))          \
 346          / sizeof(((struct md_ops *)(0))->m_getstatus))
 347
 348 #define MD_COUNTER_INCREMENT(obdx, op)                     \
 349         if ((obd)->md_stats != NULL) {                     \
 350                 unsigned int coffset;                       \
 351                 coffset = (unsigned int)((obdx)->md_cntr_base) + \
 352                         MD_COUNTER_OFFSET(op);             \
 353                 LASSERT(coffset < (obdx)->md_stats->ls_num);     \
 354                 lprocfs_counter_incr((obdx)->md_stats, coffset); \
 355         }
 356
 357 #define EXP_MD_COUNTER_INCREMENT(export, op)                             \
 358         if ((export)->exp_obd->obd_stats != NULL) {                       \
 359                 unsigned int coffset;                                   \
 360                 coffset = (unsigned int)((export)->exp_obd->md_cntr_base) +  \
 361                         MD_COUNTER_OFFSET(op);                         \
 362                 LASSERT(coffset < (export)->exp_obd->md_stats->ls_num);      \
 363                 lprocfs_counter_incr((export)->exp_obd->md_stats, coffset);  \
 364                 if ((export)->exp_md_stats != NULL)                       \
 365                         lprocfs_counter_incr(                           \
 366                                 (export)->exp_md_stats, coffset);           \
 367         }
 368
 369
 370 #define OBD_CHECK_MD_OP(obd, op, err)                      \
 371 do {                                                        \
 372         if (!OBT(obd) || !MDP((obd), op)) {                  \
 373                 if (err)                                        \
 374                         CERROR("md_" #op ": dev %s/%d no operation\n", \
 375                                obd->obd_name, obd->obd_minor);  \
 376                 return err;                                 \
 377         }                                                      \
 378 } while (0)
 379
 380 #define EXP_CHECK_MD_OP(exp, op)                                \
 381 do {                                                        \
 382         if ((exp) == NULL) {                                \
 383                 CERROR("obd_" #op ": NULL export\n");      \
 384                 return -ENODEV;                         \
 385         }                                                      \
 386         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 387                 CERROR("obd_" #op ": cleaned up obd\n");        \
 388                 return -EOPNOTSUPP;                         \
 389         }                                                      \
 390         if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
 391                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 392                        (exp)->exp_obd->obd_name,                \
 393                        (exp)->exp_obd->obd_minor);            \
 394                 return -EOPNOTSUPP;                         \
 395         }                                                      \
 396 } while (0)
 397
 398
 399 #define OBD_CHECK_DT_OP(obd, op, err)                      \
 400 do {                                                        \
 401         if (!OBT(obd) || !OBP((obd), op)) {                  \
 402                 if (err)                                        \
 403                         CERROR("obd_" #op ": dev %d no operation\n",    \
 404                                obd->obd_minor);          \
 405                 return err;                                 \
 406         }                                                      \
 407 } while (0)
 408
 409 #define EXP_CHECK_DT_OP(exp, op)                                \
 410 do {                                                        \
 411         if ((exp) == NULL) {                                \
 412                 CERROR("obd_" #op ": NULL export\n");      \
 413                 return -ENODEV;                         \
 414         }                                                      \
 415         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 416                 CERROR("obd_" #op ": cleaned up obd\n");        \
 417                 return -EOPNOTSUPP;                         \
 418         }                                                      \
 419         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 420                 CERROR("obd_" #op ": dev %d no operation\n",    \
 421                        (exp)->exp_obd->obd_minor);            \
 422                 return -EOPNOTSUPP;                         \
 423         }                                                      \
 424 } while (0)
 425
 426 #define CTXT_CHECK_OP(ctxt, op, err)                             \
 427 do {                                                             \
 428         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {             \
 429                 if (err)                                             \
 430                         CERROR("lop_" #op ": dev %d no operation\n", \
 431                                ctxt->loc_obd->obd_minor);           \
 432                 return err;                                      \
 433         }                                                           \
 434 } while (0)
 435
 436 static inline int class_devno_max(void)
 437 {
 438         return MAX_OBD_DEVICES;
 439 }
 440
 441 static inline int obd_get_info(const struct lu_env *env,
 442                                struct obd_export *exp, __u32 keylen,
 443                                void *key, __u32 *vallen, void *val,
 444                                struct lov_stripe_md *lsm)
 445 {
 446         int rc;
 447
 448         EXP_CHECK_DT_OP(exp, get_info);
 449         EXP_COUNTER_INCREMENT(exp, get_info);
 450
 451         rc = OBP(exp->exp_obd, get_info)(env, exp, keylen, key, vallen, val,
 452                                          lsm);
 453         return rc;
 454 }
 455
 456 static inline int obd_set_info_async(const struct lu_env *env,
 457                                      struct obd_export *exp, u32 keylen,
 458                                      void *key, u32 vallen, void *val,
 459                                      struct ptlrpc_request_set *set)
 460 {
 461         int rc;
 462
 463         EXP_CHECK_DT_OP(exp, set_info_async);
 464         EXP_COUNTER_INCREMENT(exp, set_info_async);
 465
 466         rc = OBP(exp->exp_obd, set_info_async)(env, exp, keylen, key, vallen,
 467                                                val, set);
 468         return rc;
 469 }
 470
 471 /*
 472  * obd-lu integration.
 473  *
 474  * Functionality is being moved into new lu_device-based layering, but some
 475  * pieces of configuration process are still based on obd devices.
 476  *
 477  * Specifically, lu_device_type_operations::ldto_device_alloc() methods fully
 478  * subsume ->o_setup() methods of obd devices they replace. The same for
 479  * lu_device_operations::ldo_process_config() and ->o_process_config(). As a
 480  * result, obd_setup() and obd_process_config() branch and call one XOR
 481  * another.
 482  *
 483  * Yet neither lu_device_type_operations::ldto_device_fini() nor
 484  * lu_device_type_operations::ldto_device_free() fully implement the
 485  * functionality of ->o_precleanup() and ->o_cleanup() they override. Hence,
 486  * obd_precleanup() and obd_cleanup() call both lu_device and obd operations.
 487  */
 488
 489 #define DECLARE_LU_VARS(ldt, d)          \
 490         struct lu_device_type *ldt;       \
 491         struct lu_device *d
 492
 493 static inline int obd_setup(struct obd_device *obd, struct lustre_cfg *cfg)
 494 {
 495         int rc;
 496         DECLARE_LU_VARS(ldt, d);
 497
 498         ldt = obd->obd_type->typ_lu;
 499         if (ldt != NULL) {
 500                 struct lu_context  session_ctx;
 501                 struct lu_env env;
 502                 lu_context_init(&session_ctx, LCT_SESSION);
 503                 session_ctx.lc_thread = NULL;
 504                 lu_context_enter(&session_ctx);
 505
 506                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 507                 if (rc == 0) {
 508                         env.le_ses = &session_ctx;
 509                         d = ldt->ldt_ops->ldto_device_alloc(&env, ldt, cfg);
 510                         lu_env_fini(&env);
 511                         if (!IS_ERR(d)) {
 512                                 obd->obd_lu_dev = d;
 513                                 d->ld_obd = obd;
 514                                 rc = 0;
 515                         } else
 516                                 rc = PTR_ERR(d);
 517                 }
 518                 lu_context_exit(&session_ctx);
 519                 lu_context_fini(&session_ctx);
 520
 521         } else {
 522                 OBD_CHECK_DT_OP(obd, setup, -EOPNOTSUPP);
 523                 OBD_COUNTER_INCREMENT(obd, setup);
 524                 rc = OBP(obd, setup)(obd, cfg);
 525         }
 526         return rc;
 527 }
 528
 529 static inline int obd_precleanup(struct obd_device *obd,
 530                                  enum obd_cleanup_stage cleanup_stage)
 531 {
 532         int rc;
 533         DECLARE_LU_VARS(ldt, d);
 534
 535         rc = obd_check_dev(obd);
 536         if (rc)
 537                 return rc;
 538         ldt = obd->obd_type->typ_lu;
 539         d = obd->obd_lu_dev;
 540         if (ldt != NULL && d != NULL) {
 541                 if (cleanup_stage == OBD_CLEANUP_EXPORTS) {
 542                         struct lu_env env;
 543
 544                         rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 545                         if (rc == 0) {
 546                                 ldt->ldt_ops->ldto_device_fini(&env, d);
 547                                 lu_env_fini(&env);
 548                         }
 549                 }
 550         }
 551         OBD_CHECK_DT_OP(obd, precleanup, 0);
 552         OBD_COUNTER_INCREMENT(obd, precleanup);
 553
 554         rc = OBP(obd, precleanup)(obd, cleanup_stage);
 555         return rc;
 556 }
 557
 558 static inline int obd_cleanup(struct obd_device *obd)
 559 {
 560         int rc;
 561         DECLARE_LU_VARS(ldt, d);
 562
 563         rc = obd_check_dev(obd);
 564         if (rc)
 565                 return rc;
 566
 567         ldt = obd->obd_type->typ_lu;
 568         d = obd->obd_lu_dev;
 569         if (ldt != NULL && d != NULL) {
 570                 struct lu_env env;
 571
 572                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 573                 if (rc == 0) {
 574                         ldt->ldt_ops->ldto_device_free(&env, d);
 575                         lu_env_fini(&env);
 576                         obd->obd_lu_dev = NULL;
 577                 }
 578         }
 579         OBD_CHECK_DT_OP(obd, cleanup, 0);
 580         OBD_COUNTER_INCREMENT(obd, cleanup);
 581
 582         rc = OBP(obd, cleanup)(obd);
 583         return rc;
 584 }
 585
 586 static inline void obd_cleanup_client_import(struct obd_device *obd)
 587 {
 588         /* If we set up but never connected, the
 589            client import will not have been cleaned. */
 590         down_write(&obd->u.cli.cl_sem);
 591         if (obd->u.cli.cl_import) {
 592                 struct obd_import *imp;
 593                 imp = obd->u.cli.cl_import;
 594                 CDEBUG(D_CONFIG, "%s: client import never connected\n",
 595                        obd->obd_name);
 596                 ptlrpc_invalidate_import(imp);
 597                 client_destroy_import(imp);
 598                 obd->u.cli.cl_import = NULL;
 599         }
 600         up_write(&obd->u.cli.cl_sem);
 601 }
 602
 603 static inline int
 604 obd_process_config(struct obd_device *obd, int datalen, void *data)
 605 {
 606         int rc;
 607         DECLARE_LU_VARS(ldt, d);
 608
 609         rc = obd_check_dev(obd);
 610         if (rc)
 611                 return rc;
 612
 613         obd->obd_process_conf = 1;
 614         ldt = obd->obd_type->typ_lu;
 615         d = obd->obd_lu_dev;
 616         if (ldt != NULL && d != NULL) {
 617                 struct lu_env env;
 618
 619                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 620                 if (rc == 0) {
 621                         rc = d->ld_ops->ldo_process_config(&env, d, data);
 622                         lu_env_fini(&env);
 623                 }
 624         } else {
 625                 OBD_CHECK_DT_OP(obd, process_config, -EOPNOTSUPP);
 626                 rc = OBP(obd, process_config)(obd, datalen, data);
 627         }
 628         OBD_COUNTER_INCREMENT(obd, process_config);
 629         obd->obd_process_conf = 0;
 630
 631         return rc;
 632 }
 633
 634 /* Pack an in-memory MD struct for storage on disk.
 635  * Returns +ve size of packed MD (0 for free), or -ve error.
 636  *
 637  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 638  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 639  * If @*disk_tgt == NULL, it will be allocated
 640  */
 641 static inline int obd_packmd(struct obd_export *exp,
 642                              struct lov_mds_md **disk_tgt,
 643                              struct lov_stripe_md *mem_src)
 644 {
 645         int rc;
 646
 647         EXP_CHECK_DT_OP(exp, packmd);
 648         EXP_COUNTER_INCREMENT(exp, packmd);
 649
 650         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 651         return rc;
 652 }
 653
 654 static inline int obd_size_diskmd(struct obd_export *exp,
 655                                   struct lov_stripe_md *mem_src)
 656 {
 657         return obd_packmd(exp, NULL, mem_src);
 658 }
 659
 660 static inline int obd_free_diskmd(struct obd_export *exp,
 661                                   struct lov_mds_md **disk_tgt)
 662 {
 663         LASSERT(disk_tgt);
 664         LASSERT(*disk_tgt);
 665         /*
 666          * LU-2590, for caller's convenience, *disk_tgt could be host
 667          * endianness, it needs swab to LE if necessary, while just
 668          * lov_mds_md header needs it for figuring out how much memory
 669          * needs to be freed.
 670          */
 671         if ((cpu_to_le32(LOV_MAGIC) != LOV_MAGIC) &&
 672             (((*disk_tgt)->lmm_magic == LOV_MAGIC_V1) ||
 673              ((*disk_tgt)->lmm_magic == LOV_MAGIC_V3)))
 674                 lustre_swab_lov_mds_md(*disk_tgt);
 675         return obd_packmd(exp, disk_tgt, NULL);
 676 }
 677
 678 /* Unpack an MD struct from disk to in-memory format.
 679  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 680  *
 681  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 682  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 683  * If @*mem_tgt == NULL, it will be allocated
 684  */
 685 static inline int obd_unpackmd(struct obd_export *exp,
 686                                struct lov_stripe_md **mem_tgt,
 687                                struct lov_mds_md *disk_src,
 688                                int disk_len)
 689 {
 690         int rc;
 691
 692         EXP_CHECK_DT_OP(exp, unpackmd);
 693         EXP_COUNTER_INCREMENT(exp, unpackmd);
 694
 695         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 696         return rc;
 697 }
 698
 699 /* helper functions */
 700 static inline int obd_alloc_memmd(struct obd_export *exp,
 701                                   struct lov_stripe_md **mem_tgt)
 702 {
 703         LASSERT(mem_tgt);
 704         LASSERT(*mem_tgt == NULL);
 705         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 706 }
 707
 708 static inline int obd_free_memmd(struct obd_export *exp,
 709                                  struct lov_stripe_md **mem_tgt)
 710 {
 711         int rc;
 712
 713         LASSERT(mem_tgt);
 714         LASSERT(*mem_tgt);
 715         rc = obd_unpackmd(exp, mem_tgt, NULL, 0);
 716         *mem_tgt = NULL;
 717         return rc;
 718 }
 719
 720 static inline int obd_create(const struct lu_env *env, struct obd_export *exp,
 721                              struct obdo *obdo, struct lov_stripe_md **ea,
 722                              struct obd_trans_info *oti)
 723 {
 724         int rc;
 725
 726         EXP_CHECK_DT_OP(exp, create);
 727         EXP_COUNTER_INCREMENT(exp, create);
 728
 729         rc = OBP(exp->exp_obd, create)(env, exp, obdo, ea, oti);
 730         return rc;
 731 }
 732
 733 static inline int obd_destroy(const struct lu_env *env, struct obd_export *exp,
 734                               struct obdo *obdo, struct lov_stripe_md *ea,
 735                               struct obd_trans_info *oti,
 736                               struct obd_export *md_exp)
 737 {
 738         int rc;
 739
 740         EXP_CHECK_DT_OP(exp, destroy);
 741         EXP_COUNTER_INCREMENT(exp, destroy);
 742
 743         rc = OBP(exp->exp_obd, destroy)(env, exp, obdo, ea, oti, md_exp);
 744         return rc;
 745 }
 746
 747 static inline int obd_getattr(const struct lu_env *env, struct obd_export *exp,
 748                               struct obd_info *oinfo)
 749 {
 750         int rc;
 751
 752         EXP_CHECK_DT_OP(exp, getattr);
 753         EXP_COUNTER_INCREMENT(exp, getattr);
 754
 755         rc = OBP(exp->exp_obd, getattr)(env, exp, oinfo);
 756         return rc;
 757 }
 758
 759 static inline int obd_getattr_async(struct obd_export *exp,
 760                                     struct obd_info *oinfo,
 761                                     struct ptlrpc_request_set *set)
 762 {
 763         int rc;
 764
 765         EXP_CHECK_DT_OP(exp, getattr_async);
 766         EXP_COUNTER_INCREMENT(exp, getattr_async);
 767
 768         rc = OBP(exp->exp_obd, getattr_async)(exp, oinfo, set);
 769         return rc;
 770 }
 771
 772 static inline int obd_setattr(const struct lu_env *env, struct obd_export *exp,
 773                               struct obd_info *oinfo,
 774                               struct obd_trans_info *oti)
 775 {
 776         int rc;
 777
 778         EXP_CHECK_DT_OP(exp, setattr);
 779         EXP_COUNTER_INCREMENT(exp, setattr);
 780
 781         rc = OBP(exp->exp_obd, setattr)(env, exp, oinfo, oti);
 782         return rc;
 783 }
 784
 785 /* This performs all the requests set init/wait/destroy actions. */
 786 static inline int obd_setattr_rqset(struct obd_export *exp,
 787                                     struct obd_info *oinfo,
 788                                     struct obd_trans_info *oti)
 789 {
 790         struct ptlrpc_request_set *set = NULL;
 791         int rc;
 792
 793         EXP_CHECK_DT_OP(exp, setattr_async);
 794         EXP_COUNTER_INCREMENT(exp, setattr_async);
 795
 796         set =  ptlrpc_prep_set();
 797         if (set == NULL)
 798                 return -ENOMEM;
 799
 800         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 801         if (rc == 0)
 802                 rc = ptlrpc_set_wait(set);
 803         ptlrpc_set_destroy(set);
 804         return rc;
 805 }
 806
 807 /* This adds all the requests into @set if @set != NULL, otherwise
 808    all requests are sent asynchronously without waiting for response. */
 809 static inline int obd_setattr_async(struct obd_export *exp,
 810                                     struct obd_info *oinfo,
 811                                     struct obd_trans_info *oti,
 812                                     struct ptlrpc_request_set *set)
 813 {
 814         int rc;
 815
 816         EXP_CHECK_DT_OP(exp, setattr_async);
 817         EXP_COUNTER_INCREMENT(exp, setattr_async);
 818
 819         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 820         return rc;
 821 }
 822
 823 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 824                                int priority)
 825 {
 826         struct obd_device *obd = imp->imp_obd;
 827         int rc;
 828
 829         rc = obd_check_dev_active(obd);
 830         if (rc)
 831                 return rc;
 832         OBD_CHECK_DT_OP(obd, add_conn, -EOPNOTSUPP);
 833         OBD_COUNTER_INCREMENT(obd, add_conn);
 834
 835         rc = OBP(obd, add_conn)(imp, uuid, priority);
 836         return rc;
 837 }
 838
 839 static inline int obd_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
 840 {
 841         struct obd_device *obd = imp->imp_obd;
 842         int rc;
 843
 844         rc = obd_check_dev_active(obd);
 845         if (rc)
 846                 return rc;
 847         OBD_CHECK_DT_OP(obd, del_conn, -EOPNOTSUPP);
 848         OBD_COUNTER_INCREMENT(obd, del_conn);
 849
 850         rc = OBP(obd, del_conn)(imp, uuid);
 851         return rc;
 852 }
 853
 854 static inline struct obd_uuid *obd_get_uuid(struct obd_export *exp)
 855 {
 856         struct obd_uuid *uuid;
 857
 858         OBD_CHECK_DT_OP(exp->exp_obd, get_uuid, NULL);
 859         EXP_COUNTER_INCREMENT(exp, get_uuid);
 860
 861         uuid = OBP(exp->exp_obd, get_uuid)(exp);
 862         return uuid;
 863 }
 864
 865 /** Create a new /a exp on device /a obd for the uuid /a cluuid
 866  * @param exp New export handle
 867  * @param d Connect data, supported flags are set, flags also understood
 868  *    by obd are returned.
 869  */
 870 static inline int obd_connect(const struct lu_env *env,
 871                               struct obd_export **exp, struct obd_device *obd,
 872                               struct obd_uuid *cluuid,
 873                               struct obd_connect_data *data,
 874                               void *localdata)
 875 {
 876         int rc;
 877         __u64 ocf = data ? data->ocd_connect_flags : 0; /* for post-condition
 878                                                    * check */
 879
 880         rc = obd_check_dev_active(obd);
 881         if (rc)
 882                 return rc;
 883         OBD_CHECK_DT_OP(obd, connect, -EOPNOTSUPP);
 884         OBD_COUNTER_INCREMENT(obd, connect);
 885
 886         rc = OBP(obd, connect)(env, exp, obd, cluuid, data, localdata);
 887         /* check that only subset is granted */
 888         LASSERT(ergo(data != NULL, (data->ocd_connect_flags & ocf) ==
 889                                     data->ocd_connect_flags));
 890         return rc;
 891 }
 892
 893 static inline int obd_reconnect(const struct lu_env *env,
 894                                 struct obd_export *exp,
 895                                 struct obd_device *obd,
 896                                 struct obd_uuid *cluuid,
 897                                 struct obd_connect_data *d,
 898                                 void *localdata)
 899 {
 900         int rc;
 901         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 902                                                    * check */
 903
 904         rc = obd_check_dev_active(obd);
 905         if (rc)
 906                 return rc;
 907         OBD_CHECK_DT_OP(obd, reconnect, 0);
 908         OBD_COUNTER_INCREMENT(obd, reconnect);
 909
 910         rc = OBP(obd, reconnect)(env, exp, obd, cluuid, d, localdata);
 911         /* check that only subset is granted */
 912         LASSERT(ergo(d != NULL,
 913                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 914         return rc;
 915 }
 916
 917 static inline int obd_disconnect(struct obd_export *exp)
 918 {
 919         int rc;
 920
 921         EXP_CHECK_DT_OP(exp, disconnect);
 922         EXP_COUNTER_INCREMENT(exp, disconnect);
 923
 924         rc = OBP(exp->exp_obd, disconnect)(exp);
 925         return rc;
 926 }
 927
 928 static inline int obd_fid_init(struct obd_device *obd, struct obd_export *exp,
 929                                enum lu_cli_type type)
 930 {
 931         int rc;
 932
 933         OBD_CHECK_DT_OP(obd, fid_init, 0);
 934         OBD_COUNTER_INCREMENT(obd, fid_init);
 935
 936         rc = OBP(obd, fid_init)(obd, exp, type);
 937         return rc;
 938 }
 939
 940 static inline int obd_fid_fini(struct obd_device *obd)
 941 {
 942         int rc;
 943
 944         OBD_CHECK_DT_OP(obd, fid_fini, 0);
 945         OBD_COUNTER_INCREMENT(obd, fid_fini);
 946
 947         rc = OBP(obd, fid_fini)(obd);
 948         return rc;
 949 }
 950
 951 static inline int obd_fid_alloc(struct obd_export *exp,
 952                                 struct lu_fid *fid,
 953                                 struct md_op_data *op_data)
 954 {
 955         int rc;
 956
 957         EXP_CHECK_DT_OP(exp, fid_alloc);
 958         EXP_COUNTER_INCREMENT(exp, fid_alloc);
 959
 960         rc = OBP(exp->exp_obd, fid_alloc)(exp, fid, op_data);
 961         return rc;
 962 }
 963
 964 static inline int obd_pool_new(struct obd_device *obd, char *poolname)
 965 {
 966         int rc;
 967
 968         OBD_CHECK_DT_OP(obd, pool_new, -EOPNOTSUPP);
 969         OBD_COUNTER_INCREMENT(obd, pool_new);
 970
 971         rc = OBP(obd, pool_new)(obd, poolname);
 972         return rc;
 973 }
 974
 975 static inline int obd_pool_del(struct obd_device *obd, char *poolname)
 976 {
 977         int rc;
 978
 979         OBD_CHECK_DT_OP(obd, pool_del, -EOPNOTSUPP);
 980         OBD_COUNTER_INCREMENT(obd, pool_del);
 981
 982         rc = OBP(obd, pool_del)(obd, poolname);
 983         return rc;
 984 }
 985
 986 static inline int obd_pool_add(struct obd_device *obd, char *poolname, char *ostname)
 987 {
 988         int rc;
 989
 990         OBD_CHECK_DT_OP(obd, pool_add, -EOPNOTSUPP);
 991         OBD_COUNTER_INCREMENT(obd, pool_add);
 992
 993         rc = OBP(obd, pool_add)(obd, poolname, ostname);
 994         return rc;
 995 }
 996
 997 static inline int obd_pool_rem(struct obd_device *obd, char *poolname, char *ostname)
 998 {
 999         int rc;
1000
1001         OBD_CHECK_DT_OP(obd, pool_rem, -EOPNOTSUPP);
1002         OBD_COUNTER_INCREMENT(obd, pool_rem);
1003
1004         rc = OBP(obd, pool_rem)(obd, poolname, ostname);
1005         return rc;
1006 }
1007
1008 static inline void obd_getref(struct obd_device *obd)
1009 {
1010         if (OBT(obd) && OBP(obd, getref)) {
1011                 OBD_COUNTER_INCREMENT(obd, getref);
1012                 OBP(obd, getref)(obd);
1013         }
1014 }
1015
1016 static inline void obd_putref(struct obd_device *obd)
1017 {
1018         if (OBT(obd) && OBP(obd, putref)) {
1019                 OBD_COUNTER_INCREMENT(obd, putref);
1020                 OBP(obd, putref)(obd);
1021         }
1022 }
1023
1024 static inline int obd_init_export(struct obd_export *exp)
1025 {
1026         int rc = 0;
1027
1028         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
1029             OBP((exp)->exp_obd, init_export))
1030                 rc = OBP(exp->exp_obd, init_export)(exp);
1031         return rc;
1032 }
1033
1034 static inline int obd_destroy_export(struct obd_export *exp)
1035 {
1036         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
1037             OBP((exp)->exp_obd, destroy_export))
1038                 OBP(exp->exp_obd, destroy_export)(exp);
1039         return 0;
1040 }
1041
1042 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1043  * If the cache is older than @max_age we will get a new value from the
1044  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1045 static inline int obd_statfs_async(struct obd_export *exp,
1046                                    struct obd_info *oinfo,
1047                                    __u64 max_age,
1048                                    struct ptlrpc_request_set *rqset)
1049 {
1050         int rc = 0;
1051         struct obd_device *obd;
1052
1053         if (exp == NULL || exp->exp_obd == NULL)
1054                 return -EINVAL;
1055
1056         obd = exp->exp_obd;
1057         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1058         OBD_COUNTER_INCREMENT(obd, statfs);
1059
1060         CDEBUG(D_SUPER, "%s: osfs %p age %llu, max_age %llu\n",
1061                obd->obd_name, &obd->obd_osfs, obd->obd_osfs_age, max_age);
1062         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1063                 rc = OBP(obd, statfs_async)(exp, oinfo, max_age, rqset);
1064         } else {
1065                 CDEBUG(D_SUPER,
1066                        "%s: use %p cache blocks %llu/%llu objects %llu/%llu\n",
1067                        obd->obd_name, &obd->obd_osfs,
1068                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1069                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1070                 spin_lock(&obd->obd_osfs_lock);
1071                 memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
1072                 spin_unlock(&obd->obd_osfs_lock);
1073                 oinfo->oi_flags |= OBD_STATFS_FROM_CACHE;
1074                 if (oinfo->oi_cb_up)
1075                         oinfo->oi_cb_up(oinfo, 0);
1076         }
1077         return rc;
1078 }
1079
1080 static inline int obd_statfs_rqset(struct obd_export *exp,
1081                                    struct obd_statfs *osfs, __u64 max_age,
1082                                    __u32 flags)
1083 {
1084         struct ptlrpc_request_set *set = NULL;
1085         struct obd_info oinfo = { };
1086         int rc = 0;
1087
1088         set =  ptlrpc_prep_set();
1089         if (set == NULL)
1090                 return -ENOMEM;
1091
1092         oinfo.oi_osfs = osfs;
1093         oinfo.oi_flags = flags;
1094         rc = obd_statfs_async(exp, &oinfo, max_age, set);
1095         if (rc == 0)
1096                 rc = ptlrpc_set_wait(set);
1097         ptlrpc_set_destroy(set);
1098         return rc;
1099 }
1100
1101 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1102  * If the cache is older than @max_age we will get a new value from the
1103  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1104 static inline int obd_statfs(const struct lu_env *env, struct obd_export *exp,
1105                              struct obd_statfs *osfs, __u64 max_age,
1106                              __u32 flags)
1107 {
1108         int rc = 0;
1109         struct obd_device *obd = exp->exp_obd;
1110
1111         if (obd == NULL)
1112                 return -EINVAL;
1113
1114         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1115         OBD_COUNTER_INCREMENT(obd, statfs);
1116
1117         CDEBUG(D_SUPER, "osfs %llu, max_age %llu\n",
1118                obd->obd_osfs_age, max_age);
1119         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1120                 rc = OBP(obd, statfs)(env, exp, osfs, max_age, flags);
1121                 if (rc == 0) {
1122                         spin_lock(&obd->obd_osfs_lock);
1123                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
1124                         obd->obd_osfs_age = cfs_time_current_64();
1125                         spin_unlock(&obd->obd_osfs_lock);
1126                 }
1127         } else {
1128                 CDEBUG(D_SUPER, "%s: use %p cache blocks %llu/%llu objects %llu/%llu\n",
1129                        obd->obd_name, &obd->obd_osfs,
1130                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1131                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1132                 spin_lock(&obd->obd_osfs_lock);
1133                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
1134                 spin_unlock(&obd->obd_osfs_lock);
1135         }
1136         return rc;
1137 }
1138
1139 static inline int obd_preprw(const struct lu_env *env, int cmd,
1140                              struct obd_export *exp, struct obdo *oa,
1141                              int objcount, struct obd_ioobj *obj,
1142                              struct niobuf_remote *remote, int *pages,
1143                              struct niobuf_local *local,
1144                              struct obd_trans_info *oti)
1145 {
1146         int rc;
1147
1148         EXP_CHECK_DT_OP(exp, preprw);
1149         EXP_COUNTER_INCREMENT(exp, preprw);
1150
1151         rc = OBP(exp->exp_obd, preprw)(env, cmd, exp, oa, objcount, obj, remote,
1152                                        pages, local, oti);
1153         return rc;
1154 }
1155
1156 static inline int obd_commitrw(const struct lu_env *env, int cmd,
1157                                struct obd_export *exp, struct obdo *oa,
1158                                int objcount, struct obd_ioobj *obj,
1159                                struct niobuf_remote *rnb, int pages,
1160                                struct niobuf_local *local,
1161                                struct obd_trans_info *oti, int rc)
1162 {
1163         EXP_CHECK_DT_OP(exp, commitrw);
1164         EXP_COUNTER_INCREMENT(exp, commitrw);
1165
1166         rc = OBP(exp->exp_obd, commitrw)(env, cmd, exp, oa, objcount, obj,
1167                                          rnb, pages, local, oti, rc);
1168         return rc;
1169 }
1170
1171 static inline int obd_adjust_kms(struct obd_export *exp,
1172                                  struct lov_stripe_md *lsm, u64 size,
1173                                  int shrink)
1174 {
1175         int rc;
1176
1177         EXP_CHECK_DT_OP(exp, adjust_kms);
1178         EXP_COUNTER_INCREMENT(exp, adjust_kms);
1179
1180         rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
1181         return rc;
1182 }
1183
1184 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1185                                 int len, void *karg, void *uarg)
1186 {
1187         int rc;
1188
1189         EXP_CHECK_DT_OP(exp, iocontrol);
1190         EXP_COUNTER_INCREMENT(exp, iocontrol);
1191
1192         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1193         return rc;
1194 }
1195
1196 static inline int obd_find_cbdata(struct obd_export *exp,
1197                                   struct lov_stripe_md *lsm,
1198                                   ldlm_iterator_t it, void *data)
1199 {
1200         int rc;
1201
1202         EXP_CHECK_DT_OP(exp, find_cbdata);
1203         EXP_COUNTER_INCREMENT(exp, find_cbdata);
1204
1205         rc = OBP(exp->exp_obd, find_cbdata)(exp, lsm, it, data);
1206         return rc;
1207 }
1208
1209 static inline void obd_import_event(struct obd_device *obd,
1210                                     struct obd_import *imp,
1211                                     enum obd_import_event event)
1212 {
1213         if (!obd) {
1214                 CERROR("NULL device\n");
1215                 return;
1216         }
1217         if (obd->obd_set_up && OBP(obd, import_event)) {
1218                 OBD_COUNTER_INCREMENT(obd, import_event);
1219                 OBP(obd, import_event)(obd, imp, event);
1220         }
1221 }
1222
1223 static inline int obd_notify(struct obd_device *obd,
1224                              struct obd_device *watched,
1225                              enum obd_notify_event ev,
1226                              void *data)
1227 {
1228         int rc;
1229
1230         rc = obd_check_dev(obd);
1231         if (rc)
1232                 return rc;
1233
1234         /* the check for async_recov is a complete hack - I'm hereby
1235            overloading the meaning to also mean "this was called from
1236            mds_postsetup".  I know that my mds is able to handle notifies
1237            by this point, and it needs to get them to execute mds_postrecov. */
1238         if (!obd->obd_set_up && !obd->obd_async_recov) {
1239                 CDEBUG(D_HA, "obd %s not set up\n", obd->obd_name);
1240                 return -EINVAL;
1241         }
1242
1243         if (!OBP(obd, notify)) {
1244                 CDEBUG(D_HA, "obd %s has no notify handler\n", obd->obd_name);
1245                 return -ENOSYS;
1246         }
1247
1248         OBD_COUNTER_INCREMENT(obd, notify);
1249         rc = OBP(obd, notify)(obd, watched, ev, data);
1250         return rc;
1251 }
1252
1253 static inline int obd_notify_observer(struct obd_device *observer,
1254                                       struct obd_device *observed,
1255                                       enum obd_notify_event ev,
1256                                       void *data)
1257 {
1258         int rc1;
1259         int rc2;
1260
1261         struct obd_notify_upcall *onu;
1262
1263         if (observer->obd_observer)
1264                 rc1 = obd_notify(observer->obd_observer, observed, ev, data);
1265         else
1266                 rc1 = 0;
1267         /*
1268          * Also, call non-obd listener, if any
1269          */
1270         onu = &observer->obd_upcall;
1271         if (onu->onu_upcall != NULL)
1272                 rc2 = onu->onu_upcall(observer, observed, ev,
1273                                       onu->onu_owner, NULL);
1274         else
1275                 rc2 = 0;
1276
1277         return rc1 ? rc1 : rc2;
1278 }
1279
1280 static inline int obd_quotacheck(struct obd_export *exp,
1281                                  struct obd_quotactl *oqctl)
1282 {
1283         int rc;
1284
1285         EXP_CHECK_DT_OP(exp, quotacheck);
1286         EXP_COUNTER_INCREMENT(exp, quotacheck);
1287
1288         rc = OBP(exp->exp_obd, quotacheck)(exp->exp_obd, exp, oqctl);
1289         return rc;
1290 }
1291
1292 static inline int obd_quotactl(struct obd_export *exp,
1293                                struct obd_quotactl *oqctl)
1294 {
1295         int rc;
1296
1297         EXP_CHECK_DT_OP(exp, quotactl);
1298         EXP_COUNTER_INCREMENT(exp, quotactl);
1299
1300         rc = OBP(exp->exp_obd, quotactl)(exp->exp_obd, exp, oqctl);
1301         return rc;
1302 }
1303
1304 static inline int obd_health_check(const struct lu_env *env,
1305                                    struct obd_device *obd)
1306 {
1307         /* returns: 0 on healthy
1308          *       >0 on unhealthy + reason code/flag
1309          *          however the only supported reason == 1 right now
1310          *          We'll need to define some better reasons
1311          *          or flags in the future.
1312          *       <0 on error
1313          */
1314         int rc;
1315
1316         /* don't use EXP_CHECK_DT_OP, because NULL method is normal here */
1317         if (obd == NULL || !OBT(obd)) {
1318                 CERROR("cleaned up obd\n");
1319                 return -EOPNOTSUPP;
1320         }
1321         if (!obd->obd_set_up || obd->obd_stopping)
1322                 return 0;
1323         if (!OBP(obd, health_check))
1324                 return 0;
1325
1326         rc = OBP(obd, health_check)(env, obd);
1327         return rc;
1328 }
1329
1330 static inline int obd_register_observer(struct obd_device *obd,
1331                                         struct obd_device *observer)
1332 {
1333         int rc;
1334
1335         rc = obd_check_dev(obd);
1336         if (rc)
1337                 return rc;
1338         down_write(&obd->obd_observer_link_sem);
1339         if (obd->obd_observer && observer) {
1340                 up_write(&obd->obd_observer_link_sem);
1341                 return -EALREADY;
1342         }
1343         obd->obd_observer = observer;
1344         up_write(&obd->obd_observer_link_sem);
1345         return 0;
1346 }
1347
1348 #if 0
1349 static inline int obd_register_page_removal_cb(struct obd_export *exp,
1350                                                obd_page_removal_cb_t cb,
1351                                                obd_pin_extent_cb pin_cb)
1352 {
1353         int rc;
1354
1355         OBD_CHECK_DT_OP(exp->exp_obd, register_page_removal_cb, 0);
1356         OBD_COUNTER_INCREMENT(exp->exp_obd, register_page_removal_cb);
1357
1358         rc = OBP(exp->exp_obd, register_page_removal_cb)(exp, cb, pin_cb);
1359         return rc;
1360 }
1361
1362 static inline int obd_unregister_page_removal_cb(struct obd_export *exp,
1363                                                  obd_page_removal_cb_t cb)
1364 {
1365         int rc;
1366
1367         OBD_CHECK_DT_OP(exp->exp_obd, unregister_page_removal_cb, 0);
1368         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_page_removal_cb);
1369
1370         rc = OBP(exp->exp_obd, unregister_page_removal_cb)(exp, cb);
1371         return rc;
1372 }
1373
1374 static inline int obd_register_lock_cancel_cb(struct obd_export *exp,
1375                                               obd_lock_cancel_cb cb)
1376 {
1377         int rc;
1378
1379         OBD_CHECK_DT_OP(exp->exp_obd, register_lock_cancel_cb, 0);
1380         OBD_COUNTER_INCREMENT(exp->exp_obd, register_lock_cancel_cb);
1381
1382         rc = OBP(exp->exp_obd, register_lock_cancel_cb)(exp, cb);
1383         return rc;
1384 }
1385
1386 static inline int obd_unregister_lock_cancel_cb(struct obd_export *exp,
1387                                                  obd_lock_cancel_cb cb)
1388 {
1389         int rc;
1390
1391         OBD_CHECK_DT_OP(exp->exp_obd, unregister_lock_cancel_cb, 0);
1392         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_lock_cancel_cb);
1393
1394         rc = OBP(exp->exp_obd, unregister_lock_cancel_cb)(exp, cb);
1395         return rc;
1396 }
1397 #endif
1398
1399 /* metadata helpers */
1400 static inline int md_getstatus(struct obd_export *exp, struct lu_fid *fid)
1401 {
1402         int rc;
1403
1404         EXP_CHECK_MD_OP(exp, getstatus);
1405         EXP_MD_COUNTER_INCREMENT(exp, getstatus);
1406         rc = MDP(exp->exp_obd, getstatus)(exp, fid);
1407         return rc;
1408 }
1409
1410 static inline int md_getattr(struct obd_export *exp, struct md_op_data *op_data,
1411                              struct ptlrpc_request **request)
1412 {
1413         int rc;
1414
1415         EXP_CHECK_MD_OP(exp, getattr);
1416         EXP_MD_COUNTER_INCREMENT(exp, getattr);
1417         rc = MDP(exp->exp_obd, getattr)(exp, op_data, request);
1418         return rc;
1419 }
1420
1421 static inline int md_null_inode(struct obd_export *exp,
1422                                    const struct lu_fid *fid)
1423 {
1424         int rc;
1425
1426         EXP_CHECK_MD_OP(exp, null_inode);
1427         EXP_MD_COUNTER_INCREMENT(exp, null_inode);
1428         rc = MDP(exp->exp_obd, null_inode)(exp, fid);
1429         return rc;
1430 }
1431
1432 static inline int md_find_cbdata(struct obd_export *exp,
1433                                  const struct lu_fid *fid,
1434                                  ldlm_iterator_t it, void *data)
1435 {
1436         int rc;
1437
1438         EXP_CHECK_MD_OP(exp, find_cbdata);
1439         EXP_MD_COUNTER_INCREMENT(exp, find_cbdata);
1440         rc = MDP(exp->exp_obd, find_cbdata)(exp, fid, it, data);
1441         return rc;
1442 }
1443
1444 static inline int md_close(struct obd_export *exp, struct md_op_data *op_data,
1445                            struct md_open_data *mod,
1446                            struct ptlrpc_request **request)
1447 {
1448         int rc;
1449
1450         EXP_CHECK_MD_OP(exp, close);
1451         EXP_MD_COUNTER_INCREMENT(exp, close);
1452         rc = MDP(exp->exp_obd, close)(exp, op_data, mod, request);
1453         return rc;
1454 }
1455
1456 static inline int md_create(struct obd_export *exp, struct md_op_data *op_data,
1457                             const void *data, int datalen, int mode, __u32 uid,
1458                             __u32 gid, cfs_cap_t cap_effective, __u64 rdev,
1459                             struct ptlrpc_request **request)
1460 {
1461         int rc;
1462
1463         EXP_CHECK_MD_OP(exp, create);
1464         EXP_MD_COUNTER_INCREMENT(exp, create);
1465         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1466                                        uid, gid, cap_effective, rdev, request);
1467         return rc;
1468 }
1469
1470 static inline int md_done_writing(struct obd_export *exp,
1471                                   struct md_op_data *op_data,
1472                                   struct md_open_data *mod)
1473 {
1474         int rc;
1475
1476         EXP_CHECK_MD_OP(exp, done_writing);
1477         EXP_MD_COUNTER_INCREMENT(exp, done_writing);
1478         rc = MDP(exp->exp_obd, done_writing)(exp, op_data, mod);
1479         return rc;
1480 }
1481
1482 static inline int md_enqueue(struct obd_export *exp,
1483                              struct ldlm_enqueue_info *einfo,
1484                              struct lookup_intent *it,
1485                              struct md_op_data *op_data,
1486                              struct lustre_handle *lockh,
1487                              void *lmm, int lmmsize,
1488                              struct ptlrpc_request **req,
1489                              __u64 extra_lock_flags)
1490 {
1491         int rc;
1492
1493         EXP_CHECK_MD_OP(exp, enqueue);
1494         EXP_MD_COUNTER_INCREMENT(exp, enqueue);
1495         rc = MDP(exp->exp_obd, enqueue)(exp, einfo, it, op_data, lockh,
1496                                         lmm, lmmsize, req, extra_lock_flags);
1497         return rc;
1498 }
1499
1500 static inline int md_getattr_name(struct obd_export *exp,
1501                                   struct md_op_data *op_data,
1502                                   struct ptlrpc_request **request)
1503 {
1504         int rc;
1505
1506         EXP_CHECK_MD_OP(exp, getattr_name);
1507         EXP_MD_COUNTER_INCREMENT(exp, getattr_name);
1508         rc = MDP(exp->exp_obd, getattr_name)(exp, op_data, request);
1509         return rc;
1510 }
1511
1512 static inline int md_intent_lock(struct obd_export *exp,
1513                                  struct md_op_data *op_data, void *lmm,
1514                                  int lmmsize, struct lookup_intent *it,
1515                                  int lookup_flags, struct ptlrpc_request **reqp,
1516                                  ldlm_blocking_callback cb_blocking,
1517                                  __u64 extra_lock_flags)
1518 {
1519         int rc;
1520
1521         EXP_CHECK_MD_OP(exp, intent_lock);
1522         EXP_MD_COUNTER_INCREMENT(exp, intent_lock);
1523         rc = MDP(exp->exp_obd, intent_lock)(exp, op_data, lmm, lmmsize,
1524                                             it, lookup_flags, reqp, cb_blocking,
1525                                             extra_lock_flags);
1526         return rc;
1527 }
1528
1529 static inline int md_link(struct obd_export *exp, struct md_op_data *op_data,
1530                           struct ptlrpc_request **request)
1531 {
1532         int rc;
1533
1534         EXP_CHECK_MD_OP(exp, link);
1535         EXP_MD_COUNTER_INCREMENT(exp, link);
1536         rc = MDP(exp->exp_obd, link)(exp, op_data, request);
1537         return rc;
1538 }
1539
1540 static inline int md_rename(struct obd_export *exp, struct md_op_data *op_data,
1541                             const char *old, int oldlen, const char *new,
1542                             int newlen, struct ptlrpc_request **request)
1543 {
1544         int rc;
1545
1546         EXP_CHECK_MD_OP(exp, rename);
1547         EXP_MD_COUNTER_INCREMENT(exp, rename);
1548         rc = MDP(exp->exp_obd, rename)(exp, op_data, old, oldlen, new,
1549                                        newlen, request);
1550         return rc;
1551 }
1552
1553 static inline int md_is_subdir(struct obd_export *exp,
1554                                const struct lu_fid *pfid,
1555                                const struct lu_fid *cfid,
1556                                struct ptlrpc_request **request)
1557 {
1558         int rc;
1559
1560         EXP_CHECK_MD_OP(exp, is_subdir);
1561         EXP_MD_COUNTER_INCREMENT(exp, is_subdir);
1562         rc = MDP(exp->exp_obd, is_subdir)(exp, pfid, cfid, request);
1563         return rc;
1564 }
1565
1566 static inline int md_setattr(struct obd_export *exp, struct md_op_data *op_data,
1567                              void *ea, int ealen, void *ea2, int ea2len,
1568                              struct ptlrpc_request **request,
1569                              struct md_open_data **mod)
1570 {
1571         int rc;
1572
1573         EXP_CHECK_MD_OP(exp, setattr);
1574         EXP_MD_COUNTER_INCREMENT(exp, setattr);
1575         rc = MDP(exp->exp_obd, setattr)(exp, op_data, ea, ealen,
1576                                         ea2, ea2len, request, mod);
1577         return rc;
1578 }
1579
1580 static inline int md_sync(struct obd_export *exp, const struct lu_fid *fid,
1581                           struct ptlrpc_request **request)
1582 {
1583         int rc;
1584
1585         EXP_CHECK_MD_OP(exp, sync);
1586         EXP_MD_COUNTER_INCREMENT(exp, sync);
1587         rc = MDP(exp->exp_obd, sync)(exp, fid, request);
1588         return rc;
1589 }
1590
1591 static inline int md_readpage(struct obd_export *exp, struct md_op_data *opdata,
1592                               struct page **pages,
1593                               struct ptlrpc_request **request)
1594 {
1595         int rc;
1596
1597         EXP_CHECK_MD_OP(exp, readpage);
1598         EXP_MD_COUNTER_INCREMENT(exp, readpage);
1599         rc = MDP(exp->exp_obd, readpage)(exp, opdata, pages, request);
1600         return rc;
1601 }
1602
1603 static inline int md_unlink(struct obd_export *exp, struct md_op_data *op_data,
1604                             struct ptlrpc_request **request)
1605 {
1606         int rc;
1607
1608         EXP_CHECK_MD_OP(exp, unlink);
1609         EXP_MD_COUNTER_INCREMENT(exp, unlink);
1610         rc = MDP(exp->exp_obd, unlink)(exp, op_data, request);
1611         return rc;
1612 }
1613
1614 static inline int md_get_lustre_md(struct obd_export *exp,
1615                                    struct ptlrpc_request *req,
1616                                    struct obd_export *dt_exp,
1617                                    struct obd_export *md_exp,
1618                                    struct lustre_md *md)
1619 {
1620         EXP_CHECK_MD_OP(exp, get_lustre_md);
1621         EXP_MD_COUNTER_INCREMENT(exp, get_lustre_md);
1622         return MDP(exp->exp_obd, get_lustre_md)(exp, req, dt_exp, md_exp, md);
1623 }
1624
1625 static inline int md_free_lustre_md(struct obd_export *exp,
1626                                     struct lustre_md *md)
1627 {
1628         EXP_CHECK_MD_OP(exp, free_lustre_md);
1629         EXP_MD_COUNTER_INCREMENT(exp, free_lustre_md);
1630         return MDP(exp->exp_obd, free_lustre_md)(exp, md);
1631 }
1632
1633 static inline int md_setxattr(struct obd_export *exp, const struct lu_fid *fid,
1634                               u64 valid, const char *name,
1635                               const char *input, int input_size,
1636                               int output_size, int flags, __u32 suppgid,
1637                               struct ptlrpc_request **request)
1638 {
1639         EXP_CHECK_MD_OP(exp, setxattr);
1640         EXP_MD_COUNTER_INCREMENT(exp, setxattr);
1641         return MDP(exp->exp_obd, setxattr)(exp, fid, valid, name, input,
1642                                            input_size, output_size, flags,
1643                                            suppgid, request);
1644 }
1645
1646 static inline int md_getxattr(struct obd_export *exp, const struct lu_fid *fid,
1647                               u64 valid, const char *name,
1648                               const char *input, int input_size,
1649                               int output_size, int flags,
1650                               struct ptlrpc_request **request)
1651 {
1652         EXP_CHECK_MD_OP(exp, getxattr);
1653         EXP_MD_COUNTER_INCREMENT(exp, getxattr);
1654         return MDP(exp->exp_obd, getxattr)(exp, fid, valid, name, input,
1655                                            input_size, output_size, flags,
1656                                            request);
1657 }
1658
1659 static inline int md_set_open_replay_data(struct obd_export *exp,
1660                                           struct obd_client_handle *och,
1661                                           struct lookup_intent *it)
1662 {
1663         EXP_CHECK_MD_OP(exp, set_open_replay_data);
1664         EXP_MD_COUNTER_INCREMENT(exp, set_open_replay_data);
1665         return MDP(exp->exp_obd, set_open_replay_data)(exp, och, it);
1666 }
1667
1668 static inline int md_clear_open_replay_data(struct obd_export *exp,
1669                                             struct obd_client_handle *och)
1670 {
1671         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
1672         EXP_MD_COUNTER_INCREMENT(exp, clear_open_replay_data);
1673         return MDP(exp->exp_obd, clear_open_replay_data)(exp, och);
1674 }
1675
1676 static inline int md_set_lock_data(struct obd_export *exp,
1677                                    __u64 *lockh, void *data, __u64 *bits)
1678 {
1679         EXP_CHECK_MD_OP(exp, set_lock_data);
1680         EXP_MD_COUNTER_INCREMENT(exp, set_lock_data);
1681         return MDP(exp->exp_obd, set_lock_data)(exp, lockh, data, bits);
1682 }
1683
1684 static inline int md_cancel_unused(struct obd_export *exp,
1685                                    const struct lu_fid *fid,
1686                                    ldlm_policy_data_t *policy,
1687                                    ldlm_mode_t mode,
1688                                    ldlm_cancel_flags_t flags,
1689                                    void *opaque)
1690 {
1691         int rc;
1692
1693         EXP_CHECK_MD_OP(exp, cancel_unused);
1694         EXP_MD_COUNTER_INCREMENT(exp, cancel_unused);
1695
1696         rc = MDP(exp->exp_obd, cancel_unused)(exp, fid, policy, mode,
1697                                               flags, opaque);
1698         return rc;
1699 }
1700
1701 static inline ldlm_mode_t md_lock_match(struct obd_export *exp, __u64 flags,
1702                                         const struct lu_fid *fid,
1703                                         ldlm_type_t type,
1704                                         ldlm_policy_data_t *policy,
1705                                         ldlm_mode_t mode,
1706                                         struct lustre_handle *lockh)
1707 {
1708         EXP_CHECK_MD_OP(exp, lock_match);
1709         EXP_MD_COUNTER_INCREMENT(exp, lock_match);
1710         return MDP(exp->exp_obd, lock_match)(exp, flags, fid, type,
1711                                              policy, mode, lockh);
1712 }
1713
1714 static inline int md_init_ea_size(struct obd_export *exp, int easize,
1715                                   int def_asize, int cookiesize,
1716                                   int def_cookiesize)
1717 {
1718         EXP_CHECK_MD_OP(exp, init_ea_size);
1719         EXP_MD_COUNTER_INCREMENT(exp, init_ea_size);
1720         return MDP(exp->exp_obd, init_ea_size)(exp, easize, def_asize,
1721                                                cookiesize, def_cookiesize);
1722 }
1723
1724 static inline int md_get_remote_perm(struct obd_export *exp,
1725                                      const struct lu_fid *fid, __u32 suppgid,
1726                                      struct ptlrpc_request **request)
1727 {
1728         EXP_CHECK_MD_OP(exp, get_remote_perm);
1729         EXP_MD_COUNTER_INCREMENT(exp, get_remote_perm);
1730         return MDP(exp->exp_obd, get_remote_perm)(exp, fid, suppgid,
1731                                                   request);
1732 }
1733
1734 static inline int md_intent_getattr_async(struct obd_export *exp,
1735                                           struct md_enqueue_info *minfo,
1736                                           struct ldlm_enqueue_info *einfo)
1737 {
1738         int rc;
1739
1740         EXP_CHECK_MD_OP(exp, intent_getattr_async);
1741         EXP_MD_COUNTER_INCREMENT(exp, intent_getattr_async);
1742         rc = MDP(exp->exp_obd, intent_getattr_async)(exp, minfo, einfo);
1743         return rc;
1744 }
1745
1746 static inline int md_revalidate_lock(struct obd_export *exp,
1747                                      struct lookup_intent *it,
1748                                      struct lu_fid *fid, __u64 *bits)
1749 {
1750         int rc;
1751
1752         EXP_CHECK_MD_OP(exp, revalidate_lock);
1753         EXP_MD_COUNTER_INCREMENT(exp, revalidate_lock);
1754         rc = MDP(exp->exp_obd, revalidate_lock)(exp, it, fid, bits);
1755         return rc;
1756 }
1757
1758
1759 /* OBD Metadata Support */
1760
1761 int obd_init_caches(void);
1762 void obd_cleanup_caches(void);
1763
1764 /* support routines */
1765 extern struct kmem_cache *obdo_cachep;
1766
1767 #define OBDO_ALLOC(ptr)                                                \
1768 do {                                                                      \
1769         OBD_SLAB_ALLOC_PTR_GFP((ptr), obdo_cachep, GFP_NOFS);             \
1770 } while (0)
1771
1772 #define OBDO_FREE(ptr)                                                  \
1773 do {                                                                      \
1774         OBD_SLAB_FREE_PTR((ptr), obdo_cachep);                          \
1775 } while (0)
1776
1777
1778 static inline void obdo2fid(struct obdo *oa, struct lu_fid *fid)
1779 {
1780         /* something here */
1781 }
1782
1783 static inline void fid2obdo(struct lu_fid *fid, struct obdo *oa)
1784 {
1785         /* something here */
1786 }
1787
1788 typedef int (*register_lwp_cb)(void *data);
1789
1790 struct lwp_register_item {
1791         struct obd_export **lri_exp;
1792         register_lwp_cb     lri_cb_func;
1793         void               *lri_cb_data;
1794         struct list_head            lri_list;
1795         char                lri_name[MTI_NAME_MAXLEN];
1796 };
1797
1798 /* I'm as embarrassed about this as you are.
1799  *
1800  * <shaver> // XXX do not look into _superhack with remaining eye
1801  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
1802 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
1803
1804 /* obd_mount.c */
1805
1806 /* sysctl.c */
1807 int obd_sysctl_init(void);
1808
1809 /* uuid.c  */
1810 typedef __u8 class_uuid_t[16];
1811 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
1812
1813 /* lustre_peer.c    */
1814 int lustre_uuid_to_peer(const char *uuid, lnet_nid_t *peer_nid, int index);
1815 int class_add_uuid(const char *uuid, __u64 nid);
1816 int class_del_uuid (const char *uuid);
1817 int class_check_uuid(struct obd_uuid *uuid, __u64 nid);
1818 void class_init_uuidlist(void);
1819 void class_exit_uuidlist(void);
1820
1821 /* class_obd.c */
1822 extern char obd_jobid_node[];
1823 extern struct miscdevice obd_psdev;
1824 extern spinlock_t obd_types_lock;
1825
1826 /* prng.c */
1827 #define ll_generate_random_uuid(uuid_out) cfs_get_random_bytes(uuid_out, sizeof(class_uuid_t))
1828
1829 #endif /* __LINUX_OBD_CLASS_H */