lustre/include/obd_class.h

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see
  20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  30  * Use is subject to license terms.
  31  */
  32 /*
  33  * Copyright (c) 2011 Whamcloud, Inc.
  34  */
  35 /*
  36  * This file is part of Lustre, http://www.lustre.org/
  37  * Lustre is a trademark of Sun Microsystems, Inc.
  38  */
  39 #ifndef __CLASS_OBD_H
  40 #define __CLASS_OBD_H
  41
  42 #ifndef __KERNEL__
  43 # include <liblustre.h>
  44 #endif
  45
  46 #include <obd_support.h>
  47 #include <lustre_import.h>
  48 #include <lustre_net.h>
  49 #include <obd.h>
  50 #include <lustre_lib.h>
  51 #include <lustre/lustre_idl.h>
  52 #include <lprocfs_status.h>
  53
  54 #if defined(__linux__)
  55 #include <linux/obd_class.h>
  56 #elif defined(__APPLE__)
  57 #include <darwin/obd_class.h>
  58 #elif defined(__WINNT__)
  59 #include <winnt/obd_class.h>
  60 #else
  61 #error Unsupported operating system.
  62 #endif
  63
  64 /* OBD Device Declarations */
  65 extern struct obd_device *obd_devs[MAX_OBD_DEVICES];
  66 extern cfs_rwlock_t obd_dev_lock;
  67
  68 /* OBD Operations Declarations */
  69 extern struct obd_device *class_conn2obd(struct lustre_handle *);
  70 extern struct obd_device *class_exp2obd(struct obd_export *);
  71 extern int class_handle_ioctl(unsigned int cmd, unsigned long arg);
  72
  73 struct lu_device_type;
  74
  75 /* genops.c */
  76 struct obd_export *class_conn2export(struct lustre_handle *);
  77 int class_register_type(struct obd_ops *, struct md_ops *,
  78                         struct lprocfs_vars *, const char *nm,
  79                         struct lu_device_type *ldt);
  80 int class_unregister_type(const char *nm);
  81
  82 struct obd_device *class_newdev(const char *type_name, const char *name);
  83 void class_release_dev(struct obd_device *obd);
  84
  85 int class_name2dev(const char *name);
  86 struct obd_device *class_name2obd(const char *name);
  87 int class_uuid2dev(struct obd_uuid *uuid);
  88 struct obd_device *class_uuid2obd(struct obd_uuid *uuid);
  89 void class_obd_list(void);
  90 struct obd_device * class_find_client_obd(struct obd_uuid *tgt_uuid,
  91                                           const char * typ_name,
  92                                           struct obd_uuid *grp_uuid);
  93 struct obd_device * class_devices_in_group(struct obd_uuid *grp_uuid,
  94                                            int *next);
  95 struct obd_device * class_num2obd(int num);
  96
  97 int class_notify_sptlrpc_conf(const char *fsname, int namelen);
  98
  99 char *obd_export_nid2str(struct obd_export *exp);
 100
 101 int obd_export_evict_by_nid(struct obd_device *obd, const char *nid);
 102 int obd_export_evict_by_uuid(struct obd_device *obd, const char *uuid);
 103 int obd_connect_flags2str(char *page, int count, __u64 flags, char *sep);
 104
 105 int obd_zombie_impexp_init(void);
 106 void obd_zombie_impexp_stop(void);
 107 void obd_zombie_impexp_cull(void);
 108 void obd_zombie_barrier(void);
 109 void obd_exports_barrier(struct obd_device *obd);
 110 int kuc_len(int payload_len);
 111 struct kuc_hdr * kuc_ptr(void *p);
 112 int kuc_ispayload(void *p);
 113 void *kuc_alloc(int payload_len, int transport, int type);
 114 void kuc_free(void *p, int payload_len);
 115
 116 /* obd_config.c */
 117 int class_process_config(struct lustre_cfg *lcfg);
 118 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
 119                              struct lustre_cfg *lcfg, void *data);
 120 int class_attach(struct lustre_cfg *lcfg);
 121 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
 122 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg);
 123 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg);
 124 struct obd_device *class_incref(struct obd_device *obd,
 125                                 const char *scope, const void *source);
 126 void class_decref(struct obd_device *obd,
 127                   const char *scope, const void *source);
 128 void dump_exports(struct obd_device *obd, int locks);
 129
 130 /*obdecho*/
 131 #ifdef LPROCFS
 132 extern void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars);
 133 #else
 134 static inline void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars)
 135 {
 136         memset(lvars, 0, sizeof(*lvars));
 137 }
 138 #endif
 139
 140 #define CFG_F_START     0x01   /* Set when we start updating from a log */
 141 #define CFG_F_MARKER    0x02   /* We are within a maker */
 142 #define CFG_F_SKIP      0x04   /* We should ignore this cfg command */
 143 #define CFG_F_COMPAT146 0x08   /* Allow old-style logs */
 144 #define CFG_F_EXCLUDE   0x10   /* OST exclusion list */
 145
 146 /* Passed as data param to class_config_parse_llog */
 147 struct config_llog_instance {
 148         char               *cfg_obdname;
 149         void               *cfg_instance;
 150         struct super_block *cfg_sb;
 151         struct obd_uuid     cfg_uuid;
 152         int                 cfg_last_idx; /* for partial llog processing */
 153         int                 cfg_flags;
 154 };
 155 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
 156                             struct config_llog_instance *cfg);
 157 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
 158                            struct config_llog_instance *cfg);
 159
 160 enum {
 161         CONFIG_T_CONFIG  = 0,
 162         CONFIG_T_SPTLRPC = 1,
 163         CONFIG_T_MAX     = 2
 164 };
 165
 166 /* list of active configuration logs  */
 167 struct config_llog_data {
 168         struct ldlm_res_id          cld_resid;
 169         struct config_llog_instance cld_cfg;
 170         cfs_list_t                  cld_list_chain;
 171         cfs_atomic_t                cld_refcount;
 172         struct config_llog_data    *cld_sptlrpc;/* depended sptlrpc log */
 173         struct obd_export          *cld_mgcexp;
 174         cfs_mutex_t                 cld_lock;
 175         int                         cld_type;
 176         unsigned int                cld_stopping:1, /* we were told to stop
 177                                                      * watching */
 178                                     cld_lostlock:1; /* lock not requeued */
 179         char                        cld_logname[0];
 180 };
 181
 182 struct lustre_profile {
 183         cfs_list_t       lp_list;
 184         char            *lp_profile;
 185         char            *lp_dt;
 186         char            *lp_md;
 187 };
 188
 189 struct lustre_profile *class_get_profile(const char * prof);
 190 void class_del_profile(const char *prof);
 191 void class_del_profiles(void);
 192
 193 #if LUSTRE_TRACKS_LOCK_EXP_REFS
 194
 195 void __class_export_add_lock_ref(struct obd_export *, struct ldlm_lock *);
 196 void __class_export_del_lock_ref(struct obd_export *, struct ldlm_lock *);
 197 extern void (*class_export_dump_hook)(struct obd_export *);
 198
 199 #else
 200
 201 #define __class_export_add_lock_ref(exp, lock)             do {} while(0)
 202 #define __class_export_del_lock_ref(exp, lock)             do {} while(0)
 203
 204 #endif
 205
 206 #define class_export_rpc_get(exp)                                       \
 207 ({                                                                      \
 208         cfs_atomic_inc(&(exp)->exp_rpc_count);                          \
 209         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",    \
 210                (exp), cfs_atomic_read(&(exp)->exp_rpc_count));          \
 211         class_export_get(exp);                                          \
 212 })
 213
 214 #define class_export_rpc_put(exp)                                       \
 215 ({                                                                      \
 216         LASSERT_ATOMIC_POS(&exp->exp_rpc_count);                        \
 217         cfs_atomic_dec(&(exp)->exp_rpc_count);                          \
 218         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",    \
 219                (exp), cfs_atomic_read(&(exp)->exp_rpc_count));          \
 220         class_export_put(exp);                                          \
 221 })
 222
 223 #define class_export_lock_get(exp, lock)                                \
 224 ({                                                                      \
 225         cfs_atomic_inc(&(exp)->exp_locks_count);                        \
 226         __class_export_add_lock_ref(exp, lock);                         \
 227         CDEBUG(D_INFO, "lock GETting export %p : new locks_count %d\n", \
 228                (exp), cfs_atomic_read(&(exp)->exp_locks_count));        \
 229         class_export_get(exp);                                          \
 230 })
 231
 232 #define class_export_lock_put(exp, lock)                                \
 233 ({                                                                      \
 234         LASSERT_ATOMIC_POS(&exp->exp_locks_count);                      \
 235         cfs_atomic_dec(&(exp)->exp_locks_count);                        \
 236         __class_export_del_lock_ref(exp, lock);                         \
 237         CDEBUG(D_INFO, "lock PUTting export %p : new locks_count %d\n", \
 238                (exp), cfs_atomic_read(&(exp)->exp_locks_count));        \
 239         class_export_put(exp);                                          \
 240 })
 241
 242 #define class_export_cb_get(exp)                                        \
 243 ({                                                                      \
 244         cfs_atomic_inc(&(exp)->exp_cb_count);                           \
 245         CDEBUG(D_INFO, "callback GETting export %p : new cb_count %d\n",\
 246                (exp), cfs_atomic_read(&(exp)->exp_cb_count));           \
 247         class_export_get(exp);                                          \
 248 })
 249
 250 #define class_export_cb_put(exp)                                        \
 251 ({                                                                      \
 252         LASSERT_ATOMIC_POS(&exp->exp_cb_count);                         \
 253         cfs_atomic_dec(&(exp)->exp_cb_count);                           \
 254         CDEBUG(D_INFO, "callback PUTting export %p : new cb_count %d\n",\
 255                (exp), cfs_atomic_read(&(exp)->exp_cb_count));           \
 256         class_export_put(exp);                                          \
 257 })
 258
 259 /* genops.c */
 260 struct obd_export *class_export_get(struct obd_export *exp);
 261 void class_export_put(struct obd_export *exp);
 262 struct obd_export *class_new_export(struct obd_device *obddev,
 263                                     struct obd_uuid *cluuid);
 264 void class_unlink_export(struct obd_export *exp);
 265
 266 struct obd_import *class_import_get(struct obd_import *);
 267 void class_import_put(struct obd_import *);
 268 struct obd_import *class_new_import(struct obd_device *obd);
 269 void class_destroy_import(struct obd_import *exp);
 270
 271 struct obd_type *class_search_type(const char *name);
 272 struct obd_type *class_get_type(const char *name);
 273 void class_put_type(struct obd_type *type);
 274 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 275                   struct obd_uuid *cluuid);
 276 int class_disconnect(struct obd_export *exp);
 277 void class_fail_export(struct obd_export *exp);
 278 int class_connected_export(struct obd_export *exp);
 279 void class_disconnect_exports(struct obd_device *obddev);
 280 int class_manual_cleanup(struct obd_device *obd);
 281 void class_disconnect_stale_exports(struct obd_device *,
 282                                     int (*test_export)(struct obd_export *));
 283 static inline enum obd_option exp_flags_from_obd(struct obd_device *obd)
 284 {
 285         return ((obd->obd_fail ? OBD_OPT_FAILOVER : 0) |
 286                 (obd->obd_force ? OBD_OPT_FORCE : 0) |
 287                 (obd->obd_abort_recovery ? OBD_OPT_ABORT_RECOV : 0) |
 288                 0);
 289 }
 290
 291 static inline struct lu_target *class_exp2tgt(struct obd_export *exp)
 292 {
 293         LASSERT(exp->exp_obd);
 294         return exp->exp_obd->u.obt.obt_lut;
 295 }
 296
 297 static inline struct lr_server_data *class_server_data(struct obd_device *obd)
 298 {
 299         LASSERT(obd->u.obt.obt_lut);
 300         return &obd->u.obt.obt_lut->lut_lsd;
 301 }
 302
 303 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_flag valid);
 304 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
 305 void obdo_from_iattr(struct obdo *oa, struct iattr *attr,
 306                      unsigned int ia_valid);
 307 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, obd_flag valid);
 308 void md_from_obdo(struct md_op_data *op_data, struct obdo *oa, obd_flag valid);
 309 void obdo_from_md(struct obdo *oa, struct md_op_data *op_data,
 310                   unsigned int valid);
 311
 312 #define OBT(dev)        (dev)->obd_type
 313 #define OBP(dev, op)    (dev)->obd_type->typ_dt_ops->o_ ## op
 314 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
 315 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 316
 317 /* Ensure obd_setup: used for cleanup which must be called
 318    while obd is stopping */
 319 #define OBD_CHECK_DEV(obd)                                      \
 320 do {                                                            \
 321         if (!(obd)) {                                           \
 322                 CERROR("NULL device\n");                        \
 323                 RETURN(-ENODEV);                                \
 324         }                                                       \
 325 } while (0)
 326
 327 /* ensure obd_setup and !obd_stopping */
 328 #define OBD_CHECK_DEV_ACTIVE(obd)                               \
 329 do {                                                            \
 330         OBD_CHECK_DEV(obd);                                     \
 331         if (!(obd)->obd_set_up || (obd)->obd_stopping) {        \
 332                 CERROR("Device %d not setup\n",                 \
 333                        (obd)->obd_minor);                       \
 334                 RETURN(-ENODEV);                                \
 335         }                                                       \
 336 } while (0)
 337
 338
 339 #ifdef LPROCFS
 340 #define OBD_COUNTER_OFFSET(op)                                  \
 341         ((offsetof(struct obd_ops, o_ ## op) -                  \
 342           offsetof(struct obd_ops, o_iocontrol))                \
 343          / sizeof(((struct obd_ops *)(0))->o_iocontrol))
 344
 345 #define OBD_COUNTER_INCREMENT(obdx, op)                           \
 346         if ((obdx)->obd_stats != NULL) {                          \
 347                 unsigned int coffset;                             \
 348                 coffset = (unsigned int)((obdx)->obd_cntr_base) + \
 349                         OBD_COUNTER_OFFSET(op);                   \
 350                 LASSERT(coffset < (obdx)->obd_stats->ls_num);     \
 351                 lprocfs_counter_incr((obdx)->obd_stats, coffset); \
 352         }
 353
 354 #define EXP_COUNTER_INCREMENT(export, op)                                    \
 355         if ((export)->exp_obd->obd_stats != NULL) {                          \
 356                 unsigned int coffset;                                        \
 357                 coffset = (unsigned int)((export)->exp_obd->obd_cntr_base) + \
 358                         OBD_COUNTER_OFFSET(op);                              \
 359                 LASSERT(coffset < (export)->exp_obd->obd_stats->ls_num);     \
 360                 lprocfs_counter_incr((export)->exp_obd->obd_stats, coffset); \
 361                 if ((export)->exp_nid_stats != NULL &&                       \
 362                     (export)->exp_nid_stats->nid_stats != NULL)              \
 363                         lprocfs_counter_incr(                                \
 364                                 (export)->exp_nid_stats->nid_stats, coffset);\
 365         }
 366
 367 #define MD_COUNTER_OFFSET(op)                                   \
 368         ((offsetof(struct md_ops, m_ ## op) -                   \
 369           offsetof(struct md_ops, m_getstatus))                 \
 370          / sizeof(((struct md_ops *)(0))->m_getstatus))
 371
 372 #define MD_COUNTER_INCREMENT(obdx, op)                           \
 373         if ((obd)->md_stats != NULL) {                           \
 374                 unsigned int coffset;                            \
 375                 coffset = (unsigned int)((obdx)->md_cntr_base) + \
 376                         MD_COUNTER_OFFSET(op);                   \
 377                 LASSERT(coffset < (obdx)->md_stats->ls_num);     \
 378                 lprocfs_counter_incr((obdx)->md_stats, coffset); \
 379         }
 380
 381 #define EXP_MD_COUNTER_INCREMENT(export, op)                                 \
 382         if ((export)->exp_obd->obd_stats != NULL) {                          \
 383                 unsigned int coffset;                                        \
 384                 coffset = (unsigned int)((export)->exp_obd->md_cntr_base) +  \
 385                         MD_COUNTER_OFFSET(op);                               \
 386                 LASSERT(coffset < (export)->exp_obd->md_stats->ls_num);      \
 387                 lprocfs_counter_incr((export)->exp_obd->md_stats, coffset);  \
 388                 if ((export)->exp_md_stats != NULL)                          \
 389                         lprocfs_counter_incr(                                \
 390                                 (export)->exp_md_stats, coffset);            \
 391         }
 392
 393 #else
 394 #define OBD_COUNTER_OFFSET(op)
 395 #define OBD_COUNTER_INCREMENT(obd, op)
 396 #define EXP_COUNTER_INCREMENT(exp, op)
 397 #define MD_COUNTER_INCREMENT(obd, op)
 398 #define EXP_MD_COUNTER_INCREMENT(exp, op)
 399 #endif
 400
 401 static inline int lprocfs_nid_ldlm_stats_init(struct nid_stat* tmp)
 402 {
 403         /* Always add in ldlm_stats */
 404         tmp->nid_ldlm_stats = lprocfs_alloc_stats(LDLM_LAST_OPC - LDLM_FIRST_OPC
 405                                                   ,LPROCFS_STATS_FLAG_NOPERCPU);
 406         if (tmp->nid_ldlm_stats == NULL)
 407                 return -ENOMEM;
 408
 409         lprocfs_init_ldlm_stats(tmp->nid_ldlm_stats);
 410
 411         return lprocfs_register_stats(tmp->nid_proc, "ldlm_stats",
 412                                       tmp->nid_ldlm_stats);
 413 }
 414
 415 #define OBD_CHECK_MD_OP(obd, op, err)                           \
 416 do {                                                            \
 417         if (!OBT(obd) || !MDP((obd), op)) {                     \
 418                 if (err)                                        \
 419                         CERROR("md_" #op ": dev %s/%d no operation\n", \
 420                                obd->obd_name, obd->obd_minor);  \
 421                 RETURN(err);                                    \
 422         }                                                       \
 423 } while (0)
 424
 425 #define EXP_CHECK_MD_OP(exp, op)                                \
 426 do {                                                            \
 427         if ((exp) == NULL) {                                    \
 428                 CERROR("obd_" #op ": NULL export\n");           \
 429                 RETURN(-ENODEV);                                \
 430         }                                                       \
 431         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 432                 CERROR("obd_" #op ": cleaned up obd\n");        \
 433                 RETURN(-EOPNOTSUPP);                            \
 434         }                                                       \
 435         if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
 436                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 437                        (exp)->exp_obd->obd_name,                \
 438                        (exp)->exp_obd->obd_minor);              \
 439                 RETURN(-EOPNOTSUPP);                            \
 440         }                                                       \
 441 } while (0)
 442
 443
 444 #define OBD_CHECK_DT_OP(obd, op, err)                           \
 445 do {                                                            \
 446         if (!OBT(obd) || !OBP((obd), op)) {                     \
 447                 if (err)                                        \
 448                         CERROR("obd_" #op ": dev %d no operation\n",    \
 449                                obd->obd_minor);                 \
 450                 RETURN(err);                                    \
 451         }                                                       \
 452 } while (0)
 453
 454 #define EXP_CHECK_DT_OP(exp, op)                                \
 455 do {                                                            \
 456         if ((exp) == NULL) {                                    \
 457                 CERROR("obd_" #op ": NULL export\n");           \
 458                 RETURN(-ENODEV);                                \
 459         }                                                       \
 460         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 461                 CERROR("obd_" #op ": cleaned up obd\n");        \
 462                 RETURN(-EOPNOTSUPP);                            \
 463         }                                                       \
 464         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 465                 CERROR("obd_" #op ": dev %d no operation\n",    \
 466                        (exp)->exp_obd->obd_minor);              \
 467                 RETURN(-EOPNOTSUPP);                            \
 468         }                                                       \
 469 } while (0)
 470
 471 #define CTXT_CHECK_OP(ctxt, op, err)                                 \
 472 do {                                                                 \
 473         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {             \
 474                 if (err)                                             \
 475                         CERROR("lop_" #op ": dev %d no operation\n", \
 476                                ctxt->loc_obd->obd_minor);            \
 477                 RETURN(err);                                         \
 478         }                                                            \
 479 } while (0)
 480
 481 static inline int class_devno_max(void)
 482 {
 483         return MAX_OBD_DEVICES;
 484 }
 485
 486 static inline int obd_get_info(struct obd_export *exp, __u32 keylen,
 487                                void *key, __u32 *vallen, void *val,
 488                                struct lov_stripe_md *lsm)
 489 {
 490         int rc;
 491         ENTRY;
 492
 493         EXP_CHECK_DT_OP(exp, get_info);
 494         EXP_COUNTER_INCREMENT(exp, get_info);
 495
 496         rc = OBP(exp->exp_obd, get_info)(exp, keylen, key, vallen, val, lsm);
 497         RETURN(rc);
 498 }
 499
 500 static inline int obd_set_info_async(struct obd_export *exp, obd_count keylen,
 501                                      void *key, obd_count vallen, void *val,
 502                                      struct ptlrpc_request_set *set)
 503 {
 504         int rc;
 505         ENTRY;
 506
 507         EXP_CHECK_DT_OP(exp, set_info_async);
 508         EXP_COUNTER_INCREMENT(exp, set_info_async);
 509
 510         rc = OBP(exp->exp_obd, set_info_async)(exp, keylen, key, vallen, val,
 511                                                set);
 512         RETURN(rc);
 513 }
 514
 515 /*
 516  * obd-lu integration.
 517  *
 518  * Functionality is being moved into new lu_device-based layering, but some
 519  * pieces of configuration process are still based on obd devices.
 520  *
 521  * Specifically, lu_device_type_operations::ldto_device_alloc() methods fully
 522  * subsume ->o_setup() methods of obd devices they replace. The same for
 523  * lu_device_operations::ldo_process_config() and ->o_process_config(). As a
 524  * result, obd_setup() and obd_process_config() branch and call one XOR
 525  * another.
 526  *
 527  * Yet neither lu_device_type_operations::ldto_device_fini() nor
 528  * lu_device_type_operations::ldto_device_free() fully implement the
 529  * functionality of ->o_precleanup() and ->o_cleanup() they override. Hence,
 530  * obd_precleanup() and obd_cleanup() call both lu_device and obd operations.
 531  */
 532
 533 #define DECLARE_LU_VARS(ldt, d)                 \
 534         struct lu_device_type *ldt;       \
 535         struct lu_device *d
 536
 537 static inline int obd_setup(struct obd_device *obd, struct lustre_cfg *cfg)
 538 {
 539         int rc;
 540         DECLARE_LU_VARS(ldt, d);
 541         ENTRY;
 542
 543         ldt = obd->obd_type->typ_lu;
 544         if (ldt != NULL) {
 545                 struct lu_context  session_ctx;
 546                 struct lu_env env;
 547                 lu_context_init(&session_ctx, LCT_SESSION);
 548                 session_ctx.lc_thread = NULL;
 549                 lu_context_enter(&session_ctx);
 550
 551                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 552                 if (rc == 0) {
 553                         env.le_ses = &session_ctx;
 554                         d = ldt->ldt_ops->ldto_device_alloc(&env, ldt, cfg);
 555                         lu_env_fini(&env);
 556                         if (!IS_ERR(d)) {
 557                                 obd->obd_lu_dev = d;
 558                                 d->ld_obd = obd;
 559                                 rc = 0;
 560                         } else
 561                                 rc = PTR_ERR(d);
 562                 }
 563                 lu_context_exit(&session_ctx);
 564                 lu_context_fini(&session_ctx);
 565
 566         } else {
 567                 OBD_CHECK_DT_OP(obd, setup, -EOPNOTSUPP);
 568                 OBD_COUNTER_INCREMENT(obd, setup);
 569                 rc = OBP(obd, setup)(obd, cfg);
 570         }
 571         RETURN(rc);
 572 }
 573
 574 static inline int obd_precleanup(struct obd_device *obd,
 575                                  enum obd_cleanup_stage cleanup_stage)
 576 {
 577         int rc;
 578         DECLARE_LU_VARS(ldt, d);
 579         ENTRY;
 580
 581         OBD_CHECK_DEV(obd);
 582         ldt = obd->obd_type->typ_lu;
 583         d = obd->obd_lu_dev;
 584         if (ldt != NULL && d != NULL) {
 585                 if (cleanup_stage == OBD_CLEANUP_EXPORTS) {
 586                         struct lu_env env;
 587
 588                         rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 589                         if (rc == 0) {
 590                                 ldt->ldt_ops->ldto_device_fini(&env, d);
 591                                 lu_env_fini(&env);
 592                         }
 593                 }
 594         }
 595         OBD_CHECK_DT_OP(obd, precleanup, 0);
 596         OBD_COUNTER_INCREMENT(obd, precleanup);
 597
 598         rc = OBP(obd, precleanup)(obd, cleanup_stage);
 599         RETURN(rc);
 600 }
 601
 602 static inline int obd_cleanup(struct obd_device *obd)
 603 {
 604         int rc;
 605         DECLARE_LU_VARS(ldt, d);
 606         ENTRY;
 607
 608         OBD_CHECK_DEV(obd);
 609
 610         ldt = obd->obd_type->typ_lu;
 611         d = obd->obd_lu_dev;
 612         if (ldt != NULL && d != NULL) {
 613                 struct lu_env env;
 614
 615                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 616                 if (rc == 0) {
 617                         ldt->ldt_ops->ldto_device_free(&env, d);
 618                         lu_env_fini(&env);
 619                         obd->obd_lu_dev = NULL;
 620                 }
 621         }
 622         OBD_CHECK_DT_OP(obd, cleanup, 0);
 623         OBD_COUNTER_INCREMENT(obd, cleanup);
 624
 625         rc = OBP(obd, cleanup)(obd);
 626         RETURN(rc);
 627 }
 628
 629 static inline void obd_cleanup_client_import(struct obd_device *obd)
 630 {
 631         ENTRY;
 632
 633         /* If we set up but never connected, the
 634            client import will not have been cleaned. */
 635         cfs_down_write(&obd->u.cli.cl_sem);
 636         if (obd->u.cli.cl_import) {
 637                 struct obd_import *imp;
 638                 imp = obd->u.cli.cl_import;
 639                 CDEBUG(D_CONFIG, "%s: client import never connected\n",
 640                        obd->obd_name);
 641                 ptlrpc_invalidate_import(imp);
 642                 if (imp->imp_rq_pool) {
 643                         ptlrpc_free_rq_pool(imp->imp_rq_pool);
 644                         imp->imp_rq_pool = NULL;
 645                 }
 646                 class_destroy_import(imp);
 647                 obd->u.cli.cl_import = NULL;
 648         }
 649         cfs_up_write(&obd->u.cli.cl_sem);
 650
 651         EXIT;
 652 }
 653
 654 static inline int
 655 obd_process_config(struct obd_device *obd, int datalen, void *data)
 656 {
 657         int rc;
 658         DECLARE_LU_VARS(ldt, d);
 659         ENTRY;
 660
 661         OBD_CHECK_DEV(obd);
 662
 663         obd->obd_process_conf = 1;
 664         ldt = obd->obd_type->typ_lu;
 665         d = obd->obd_lu_dev;
 666         if (ldt != NULL && d != NULL) {
 667                 struct lu_env env;
 668
 669                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 670                 if (rc == 0) {
 671                         rc = d->ld_ops->ldo_process_config(&env, d, data);
 672                         lu_env_fini(&env);
 673                 }
 674         } else {
 675                 OBD_CHECK_DT_OP(obd, process_config, -EOPNOTSUPP);
 676                 rc = OBP(obd, process_config)(obd, datalen, data);
 677         }
 678         OBD_COUNTER_INCREMENT(obd, process_config);
 679         obd->obd_process_conf = 0;
 680
 681         RETURN(rc);
 682 }
 683
 684 /* Pack an in-memory MD struct for storage on disk.
 685  * Returns +ve size of packed MD (0 for free), or -ve error.
 686  *
 687  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 688  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 689  * If @*disk_tgt == NULL, it will be allocated
 690  */
 691 static inline int obd_packmd(struct obd_export *exp,
 692                              struct lov_mds_md **disk_tgt,
 693                              struct lov_stripe_md *mem_src)
 694 {
 695         int rc;
 696         ENTRY;
 697
 698         EXP_CHECK_DT_OP(exp, packmd);
 699         EXP_COUNTER_INCREMENT(exp, packmd);
 700
 701         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 702         RETURN(rc);
 703 }
 704
 705 static inline int obd_size_diskmd(struct obd_export *exp,
 706                                   struct lov_stripe_md *mem_src)
 707 {
 708         return obd_packmd(exp, NULL, mem_src);
 709 }
 710
 711 /* helper functions */
 712 static inline int obd_alloc_diskmd(struct obd_export *exp,
 713                                    struct lov_mds_md **disk_tgt)
 714 {
 715         LASSERT(disk_tgt);
 716         LASSERT(*disk_tgt == NULL);
 717         return obd_packmd(exp, disk_tgt, NULL);
 718 }
 719
 720 static inline int obd_free_diskmd(struct obd_export *exp,
 721                                   struct lov_mds_md **disk_tgt)
 722 {
 723         LASSERT(disk_tgt);
 724         LASSERT(*disk_tgt);
 725         return obd_packmd(exp, disk_tgt, NULL);
 726 }
 727
 728 /* Unpack an MD struct from disk to in-memory format.
 729  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 730  *
 731  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 732  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 733  * If @*mem_tgt == NULL, it will be allocated
 734  */
 735 static inline int obd_unpackmd(struct obd_export *exp,
 736                                struct lov_stripe_md **mem_tgt,
 737                                struct lov_mds_md *disk_src,
 738                                int disk_len)
 739 {
 740         int rc;
 741         ENTRY;
 742
 743         EXP_CHECK_DT_OP(exp, unpackmd);
 744         EXP_COUNTER_INCREMENT(exp, unpackmd);
 745
 746         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 747         RETURN(rc);
 748 }
 749
 750 /* helper functions */
 751 static inline int obd_alloc_memmd(struct obd_export *exp,
 752                                   struct lov_stripe_md **mem_tgt)
 753 {
 754         LASSERT(mem_tgt);
 755         LASSERT(*mem_tgt == NULL);
 756         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 757 }
 758
 759 static inline int obd_free_memmd(struct obd_export *exp,
 760                                  struct lov_stripe_md **mem_tgt)
 761 {
 762         int rc;
 763
 764         LASSERT(mem_tgt);
 765         LASSERT(*mem_tgt);
 766         rc = obd_unpackmd(exp, mem_tgt, NULL, 0);
 767         *mem_tgt = NULL;
 768         return rc;
 769 }
 770
 771 static inline int obd_precreate(struct obd_export *exp)
 772 {
 773         int rc;
 774         ENTRY;
 775
 776         EXP_CHECK_DT_OP(exp, precreate);
 777         OBD_COUNTER_INCREMENT(exp->exp_obd, precreate);
 778
 779         rc = OBP(exp->exp_obd, precreate)(exp);
 780         RETURN(rc);
 781 }
 782
 783 static inline int obd_create_async(struct obd_export *exp,
 784                                    struct obd_info *oinfo,
 785                                    struct lov_stripe_md **ea,
 786                                    struct obd_trans_info *oti)
 787 {
 788         int rc;
 789         ENTRY;
 790
 791         EXP_CHECK_DT_OP(exp, create_async);
 792         EXP_COUNTER_INCREMENT(exp, create_async);
 793
 794         rc = OBP(exp->exp_obd, create_async)(exp, oinfo, ea, oti);
 795         RETURN(rc);
 796 }
 797
 798 static inline int obd_create(struct obd_export *exp, struct obdo *obdo,
 799                              struct lov_stripe_md **ea,
 800                              struct obd_trans_info *oti)
 801 {
 802         int rc;
 803         ENTRY;
 804
 805         EXP_CHECK_DT_OP(exp, create);
 806         EXP_COUNTER_INCREMENT(exp, create);
 807
 808         rc = OBP(exp->exp_obd, create)(exp, obdo, ea, oti);
 809         RETURN(rc);
 810 }
 811
 812 static inline int obd_destroy(struct obd_export *exp, struct obdo *obdo,
 813                               struct lov_stripe_md *ea,
 814                               struct obd_trans_info *oti,
 815                               struct obd_export *md_exp, void *capa)
 816 {
 817         int rc;
 818         ENTRY;
 819
 820         EXP_CHECK_DT_OP(exp, destroy);
 821         EXP_COUNTER_INCREMENT(exp, destroy);
 822
 823         rc = OBP(exp->exp_obd, destroy)(exp, obdo, ea, oti, md_exp, capa);
 824         RETURN(rc);
 825 }
 826
 827 static inline int obd_getattr(struct obd_export *exp, struct obd_info *oinfo)
 828 {
 829         int rc;
 830         ENTRY;
 831
 832         EXP_CHECK_DT_OP(exp, getattr);
 833         EXP_COUNTER_INCREMENT(exp, getattr);
 834
 835         rc = OBP(exp->exp_obd, getattr)(exp, oinfo);
 836         RETURN(rc);
 837 }
 838
 839 static inline int obd_getattr_async(struct obd_export *exp,
 840                                     struct obd_info *oinfo,
 841                                     struct ptlrpc_request_set *set)
 842 {
 843         int rc;
 844         ENTRY;
 845
 846         EXP_CHECK_DT_OP(exp, getattr_async);
 847         EXP_COUNTER_INCREMENT(exp, getattr_async);
 848
 849         rc = OBP(exp->exp_obd, getattr_async)(exp, oinfo, set);
 850         RETURN(rc);
 851 }
 852
 853 static inline int obd_setattr(struct obd_export *exp, struct obd_info *oinfo,
 854                               struct obd_trans_info *oti)
 855 {
 856         int rc;
 857         ENTRY;
 858
 859         EXP_CHECK_DT_OP(exp, setattr);
 860         EXP_COUNTER_INCREMENT(exp, setattr);
 861
 862         rc = OBP(exp->exp_obd, setattr)(exp, oinfo, oti);
 863         RETURN(rc);
 864 }
 865
 866 /* This performs all the requests set init/wait/destroy actions. */
 867 static inline int obd_setattr_rqset(struct obd_export *exp,
 868                                     struct obd_info *oinfo,
 869                                     struct obd_trans_info *oti)
 870 {
 871         struct ptlrpc_request_set *set = NULL;
 872         int rc;
 873         ENTRY;
 874
 875         EXP_CHECK_DT_OP(exp, setattr_async);
 876         EXP_COUNTER_INCREMENT(exp, setattr_async);
 877
 878         set =  ptlrpc_prep_set();
 879         if (set == NULL)
 880                 RETURN(-ENOMEM);
 881
 882         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 883         if (rc == 0)
 884                 rc = ptlrpc_set_wait(set);
 885         ptlrpc_set_destroy(set);
 886         RETURN(rc);
 887 }
 888
 889 /* This adds all the requests into @set if @set != NULL, otherwise
 890    all requests are sent asynchronously without waiting for response. */
 891 static inline int obd_setattr_async(struct obd_export *exp,
 892                                     struct obd_info *oinfo,
 893                                     struct obd_trans_info *oti,
 894                                     struct ptlrpc_request_set *set)
 895 {
 896         int rc;
 897         ENTRY;
 898
 899         EXP_CHECK_DT_OP(exp, setattr_async);
 900         EXP_COUNTER_INCREMENT(exp, setattr_async);
 901
 902         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 903         RETURN(rc);
 904 }
 905
 906 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 907                                int priority)
 908 {
 909         struct obd_device *obd = imp->imp_obd;
 910         int rc;
 911         ENTRY;
 912
 913         OBD_CHECK_DEV_ACTIVE(obd);
 914         OBD_CHECK_DT_OP(obd, add_conn, -EOPNOTSUPP);
 915         OBD_COUNTER_INCREMENT(obd, add_conn);
 916
 917         rc = OBP(obd, add_conn)(imp, uuid, priority);
 918         RETURN(rc);
 919 }
 920
 921 static inline int obd_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
 922 {
 923         struct obd_device *obd = imp->imp_obd;
 924         int rc;
 925         ENTRY;
 926
 927         OBD_CHECK_DEV_ACTIVE(obd);
 928         OBD_CHECK_DT_OP(obd, del_conn, -EOPNOTSUPP);
 929         OBD_COUNTER_INCREMENT(obd, del_conn);
 930
 931         rc = OBP(obd, del_conn)(imp, uuid);
 932         RETURN(rc);
 933 }
 934
 935 static inline struct obd_uuid *obd_get_uuid(struct obd_export *exp)
 936 {
 937         struct obd_uuid *uuid;
 938         ENTRY;
 939
 940         OBD_CHECK_DT_OP(exp->exp_obd, get_uuid, NULL);
 941         EXP_COUNTER_INCREMENT(exp, get_uuid);
 942
 943         uuid = OBP(exp->exp_obd, get_uuid)(exp);
 944         RETURN(uuid);
 945 }
 946
 947 /** Create a new /a exp on device /a obd for the uuid /a cluuid
 948  * @param exp New export handle
 949  * @param d Connect data, supported flags are set, flags also understood
 950  *    by obd are returned.
 951  */
 952 static inline int obd_connect(const struct lu_env *env,
 953                               struct obd_export **exp,struct obd_device *obd,
 954                               struct obd_uuid *cluuid,
 955                               struct obd_connect_data *data,
 956                               void *localdata)
 957 {
 958         int rc;
 959         __u64 ocf = data ? data->ocd_connect_flags : 0; /* for post-condition
 960                                                    * check */
 961         ENTRY;
 962
 963         OBD_CHECK_DEV_ACTIVE(obd);
 964         OBD_CHECK_DT_OP(obd, connect, -EOPNOTSUPP);
 965         OBD_COUNTER_INCREMENT(obd, connect);
 966
 967         rc = OBP(obd, connect)(env, exp, obd, cluuid, data, localdata);
 968         /* check that only subset is granted */
 969         LASSERT(ergo(data != NULL, (data->ocd_connect_flags & ocf) ==
 970                                     data->ocd_connect_flags));
 971         RETURN(rc);
 972 }
 973
 974 static inline int obd_reconnect(const struct lu_env *env,
 975                                 struct obd_export *exp,
 976                                 struct obd_device *obd,
 977                                 struct obd_uuid *cluuid,
 978                                 struct obd_connect_data *d,
 979                                 void *localdata)
 980 {
 981         int rc;
 982         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 983                                                    * check */
 984
 985         ENTRY;
 986
 987         OBD_CHECK_DEV_ACTIVE(obd);
 988         OBD_CHECK_DT_OP(obd, reconnect, 0);
 989         OBD_COUNTER_INCREMENT(obd, reconnect);
 990
 991         rc = OBP(obd, reconnect)(env, exp, obd, cluuid, d, localdata);
 992         /* check that only subset is granted */
 993         LASSERT(ergo(d != NULL,
 994                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 995         RETURN(rc);
 996 }
 997
 998 static inline int obd_disconnect(struct obd_export *exp)
 999 {
1000         int rc;
1001         ENTRY;
1002
1003         EXP_CHECK_DT_OP(exp, disconnect);
1004         EXP_COUNTER_INCREMENT(exp, disconnect);
1005
1006         rc = OBP(exp->exp_obd, disconnect)(exp);
1007         RETURN(rc);
1008 }
1009
1010 static inline int obd_fid_init(struct obd_export *exp)
1011 {
1012         int rc;
1013         ENTRY;
1014
1015         OBD_CHECK_DT_OP(exp->exp_obd, fid_init, 0);
1016         EXP_COUNTER_INCREMENT(exp, fid_init);
1017
1018         rc = OBP(exp->exp_obd, fid_init)(exp);
1019         RETURN(rc);
1020 }
1021
1022 static inline int obd_fid_fini(struct obd_export *exp)
1023 {
1024         int rc;
1025         ENTRY;
1026
1027         OBD_CHECK_DT_OP(exp->exp_obd, fid_fini, 0);
1028         EXP_COUNTER_INCREMENT(exp, fid_fini);
1029
1030         rc = OBP(exp->exp_obd, fid_fini)(exp);
1031         RETURN(rc);
1032 }
1033
1034 static inline int obd_fid_alloc(struct obd_export *exp,
1035                                 struct lu_fid *fid,
1036                                 struct md_op_data *op_data)
1037 {
1038         int rc;
1039         ENTRY;
1040
1041         EXP_CHECK_DT_OP(exp, fid_alloc);
1042         EXP_COUNTER_INCREMENT(exp, fid_alloc);
1043
1044         rc = OBP(exp->exp_obd, fid_alloc)(exp, fid, op_data);
1045         RETURN(rc);
1046 }
1047
1048 static inline int obd_fid_delete(struct obd_export *exp,
1049                                  const struct lu_fid *fid)
1050 {
1051         int rc;
1052         ENTRY;
1053
1054         EXP_CHECK_DT_OP(exp, fid_delete);
1055         EXP_COUNTER_INCREMENT(exp, fid_delete);
1056
1057         rc = OBP(exp->exp_obd, fid_delete)(exp, fid);
1058         RETURN(rc);
1059 }
1060
1061 static inline int obd_ping(struct obd_export *exp)
1062 {
1063         int rc;
1064         ENTRY;
1065
1066         OBD_CHECK_DT_OP(exp->exp_obd, ping, 0);
1067         EXP_COUNTER_INCREMENT(exp, ping);
1068
1069         rc = OBP(exp->exp_obd, ping)(exp);
1070         RETURN(rc);
1071 }
1072
1073 static inline int obd_pool_new(struct obd_device *obd, char *poolname)
1074 {
1075         int rc;
1076         ENTRY;
1077
1078         OBD_CHECK_DT_OP(obd, pool_new, -EOPNOTSUPP);
1079         OBD_COUNTER_INCREMENT(obd, pool_new);
1080
1081         rc = OBP(obd, pool_new)(obd, poolname);
1082         RETURN(rc);
1083 }
1084
1085 static inline int obd_pool_del(struct obd_device *obd, char *poolname)
1086 {
1087         int rc;
1088         ENTRY;
1089
1090         OBD_CHECK_DT_OP(obd, pool_del, -EOPNOTSUPP);
1091         OBD_COUNTER_INCREMENT(obd, pool_del);
1092
1093         rc = OBP(obd, pool_del)(obd, poolname);
1094         RETURN(rc);
1095 }
1096
1097 static inline int obd_pool_add(struct obd_device *obd, char *poolname, char *ostname)
1098 {
1099         int rc;
1100         ENTRY;
1101
1102         OBD_CHECK_DT_OP(obd, pool_add, -EOPNOTSUPP);
1103         OBD_COUNTER_INCREMENT(obd, pool_add);
1104
1105         rc = OBP(obd, pool_add)(obd, poolname, ostname);
1106         RETURN(rc);
1107 }
1108
1109 static inline int obd_pool_rem(struct obd_device *obd, char *poolname, char *ostname)
1110 {
1111         int rc;
1112         ENTRY;
1113
1114         OBD_CHECK_DT_OP(obd, pool_rem, -EOPNOTSUPP);
1115         OBD_COUNTER_INCREMENT(obd, pool_rem);
1116
1117         rc = OBP(obd, pool_rem)(obd, poolname, ostname);
1118         RETURN(rc);
1119 }
1120
1121 static inline void obd_getref(struct obd_device *obd)
1122 {
1123         ENTRY;
1124         if (OBT(obd) && OBP(obd, getref)) {
1125                 OBD_COUNTER_INCREMENT(obd, getref);
1126                 OBP(obd, getref)(obd);
1127         }
1128         EXIT;
1129 }
1130
1131 static inline void obd_putref(struct obd_device *obd)
1132 {
1133         ENTRY;
1134         if (OBT(obd) && OBP(obd, putref)) {
1135                 OBD_COUNTER_INCREMENT(obd, putref);
1136                 OBP(obd, putref)(obd);
1137         }
1138         EXIT;
1139 }
1140
1141 static inline int obd_init_export(struct obd_export *exp)
1142 {
1143         int rc = 0;
1144
1145         ENTRY;
1146         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
1147             OBP((exp)->exp_obd, init_export))
1148                 rc = OBP(exp->exp_obd, init_export)(exp);
1149         RETURN(rc);
1150 }
1151
1152 static inline int obd_destroy_export(struct obd_export *exp)
1153 {
1154         ENTRY;
1155         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
1156             OBP((exp)->exp_obd, destroy_export))
1157                 OBP(exp->exp_obd, destroy_export)(exp);
1158         RETURN(0);
1159 }
1160
1161 static inline int obd_extent_calc(struct obd_export *exp,
1162                                   struct lov_stripe_md *md,
1163                                   int cmd, obd_off *offset)
1164 {
1165         int rc;
1166         ENTRY;
1167         EXP_CHECK_DT_OP(exp, extent_calc);
1168         rc = OBP(exp->exp_obd, extent_calc)(exp, md, cmd, offset);
1169         RETURN(rc);
1170 }
1171
1172 static inline struct dentry *
1173 obd_lvfs_fid2dentry(struct obd_export *exp, __u64 id_ino, __u32 gen, __u64 gr)
1174 {
1175         LASSERT(exp->exp_obd);
1176
1177         return lvfs_fid2dentry(&exp->exp_obd->obd_lvfs_ctxt, id_ino, gen, gr,
1178                                exp->exp_obd);
1179 }
1180
1181 static inline int
1182 obd_lvfs_open_llog(struct obd_export *exp, __u64 id_ino, struct dentry *dentry)
1183 {
1184         LASSERT(exp->exp_obd);
1185         CERROR("FIXME what's the story here?  This needs to be an obd fn?\n");
1186 #if 0
1187         return lvfs_open_llog(&exp->exp_obd->obd_lvfs_ctxt, id_ino,
1188                               dentry, exp->exp_obd);
1189 #endif
1190         return 0;
1191 }
1192
1193 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1194  * If the cache is older than @max_age we will get a new value from the
1195  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1196 static inline int obd_statfs_async(struct obd_device *obd,
1197                                    struct obd_info *oinfo,
1198                                    __u64 max_age,
1199                                    struct ptlrpc_request_set *rqset)
1200 {
1201         int rc = 0;
1202         ENTRY;
1203
1204         if (obd == NULL)
1205                 RETURN(-EINVAL);
1206
1207         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1208         OBD_COUNTER_INCREMENT(obd, statfs);
1209
1210         CDEBUG(D_SUPER, "%s: osfs %p age "LPU64", max_age "LPU64"\n",
1211                obd->obd_name, &obd->obd_osfs, obd->obd_osfs_age, max_age);
1212         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1213                 rc = OBP(obd, statfs_async)(obd, oinfo, max_age, rqset);
1214         } else {
1215                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1216                        " objects "LPU64"/"LPU64"\n",
1217                        obd->obd_name, &obd->obd_osfs,
1218                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1219                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1220                 cfs_spin_lock(&obd->obd_osfs_lock);
1221                 memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
1222                 cfs_spin_unlock(&obd->obd_osfs_lock);
1223                 oinfo->oi_flags |= OBD_STATFS_FROM_CACHE;
1224                 if (oinfo->oi_cb_up)
1225                         oinfo->oi_cb_up(oinfo, 0);
1226         }
1227         RETURN(rc);
1228 }
1229
1230 static inline int obd_statfs_rqset(struct obd_device *obd,
1231                                    struct obd_statfs *osfs, __u64 max_age,
1232                                    __u32 flags)
1233 {
1234         struct ptlrpc_request_set *set = NULL;
1235         struct obd_info oinfo = { { { 0 } } };
1236         int rc = 0;
1237         ENTRY;
1238
1239         set =  ptlrpc_prep_set();
1240         if (set == NULL)
1241                 RETURN(-ENOMEM);
1242
1243         oinfo.oi_osfs = osfs;
1244         oinfo.oi_flags = flags;
1245         rc = obd_statfs_async(obd, &oinfo, max_age, set);
1246         if (rc == 0)
1247                 rc = ptlrpc_set_wait(set);
1248         ptlrpc_set_destroy(set);
1249         RETURN(rc);
1250 }
1251
1252 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1253  * If the cache is older than @max_age we will get a new value from the
1254  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1255 static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
1256                              __u64 max_age, __u32 flags)
1257 {
1258         int rc = 0;
1259         ENTRY;
1260
1261         if (obd == NULL)
1262                 RETURN(-EINVAL);
1263
1264         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1265         OBD_COUNTER_INCREMENT(obd, statfs);
1266
1267         CDEBUG(D_SUPER, "osfs "LPU64", max_age "LPU64"\n",
1268                obd->obd_osfs_age, max_age);
1269         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1270                 rc = OBP(obd, statfs)(obd, osfs, max_age, flags);
1271                 if (rc == 0) {
1272                         cfs_spin_lock(&obd->obd_osfs_lock);
1273                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
1274                         obd->obd_osfs_age = cfs_time_current_64();
1275                         cfs_spin_unlock(&obd->obd_osfs_lock);
1276                 }
1277         } else {
1278                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1279                        " objects "LPU64"/"LPU64"\n",
1280                        obd->obd_name, &obd->obd_osfs,
1281                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1282                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1283                 cfs_spin_lock(&obd->obd_osfs_lock);
1284                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
1285                 cfs_spin_unlock(&obd->obd_osfs_lock);
1286         }
1287         RETURN(rc);
1288 }
1289
1290 static inline int obd_sync_rqset(struct obd_export *exp, struct obd_info *oinfo,
1291                                  obd_size start, obd_size end)
1292 {
1293         struct ptlrpc_request_set *set = NULL;
1294         int rc;
1295         ENTRY;
1296
1297         OBD_CHECK_DT_OP(exp->exp_obd, sync, -EOPNOTSUPP);
1298         EXP_COUNTER_INCREMENT(exp, sync);
1299
1300         set =  ptlrpc_prep_set();
1301         if (set == NULL)
1302                 RETURN(-ENOMEM);
1303
1304         rc = OBP(exp->exp_obd, sync)(exp, oinfo, start, end, set);
1305         if (rc == 0)
1306                 rc = ptlrpc_set_wait(set);
1307         ptlrpc_set_destroy(set);
1308         RETURN(rc);
1309 }
1310
1311 static inline int obd_sync(struct obd_export *exp, struct obd_info *oinfo,
1312                            obd_size start, obd_size end,
1313                            struct ptlrpc_request_set *set)
1314 {
1315         int rc;
1316         ENTRY;
1317
1318         OBD_CHECK_DT_OP(exp->exp_obd, sync, -EOPNOTSUPP);
1319         EXP_COUNTER_INCREMENT(exp, sync);
1320
1321         rc = OBP(exp->exp_obd, sync)(exp, oinfo, start, end, set);
1322         RETURN(rc);
1323 }
1324
1325 static inline int obd_punch_rqset(struct obd_export *exp,
1326                                   struct obd_info *oinfo,
1327                                   struct obd_trans_info *oti)
1328 {
1329         struct ptlrpc_request_set *set = NULL;
1330         int rc;
1331         ENTRY;
1332
1333         EXP_CHECK_DT_OP(exp, punch);
1334         EXP_COUNTER_INCREMENT(exp, punch);
1335
1336         set =  ptlrpc_prep_set();
1337         if (set == NULL)
1338                 RETURN(-ENOMEM);
1339
1340         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, set);
1341         if (rc == 0)
1342                 rc = ptlrpc_set_wait(set);
1343         ptlrpc_set_destroy(set);
1344         RETURN(rc);
1345 }
1346
1347 static inline int obd_punch(struct obd_export *exp, struct obd_info *oinfo,
1348                             struct obd_trans_info *oti,
1349                             struct ptlrpc_request_set *rqset)
1350 {
1351         int rc;
1352         ENTRY;
1353
1354         EXP_CHECK_DT_OP(exp, punch);
1355         EXP_COUNTER_INCREMENT(exp, punch);
1356
1357         rc = OBP(exp->exp_obd, punch)(exp, oinfo, oti, rqset);
1358         RETURN(rc);
1359 }
1360
1361 static inline int obd_brw(int cmd, struct obd_export *exp,
1362                           struct obd_info *oinfo, obd_count oa_bufs,
1363                           struct brw_page *pg, struct obd_trans_info *oti)
1364 {
1365         int rc;
1366         ENTRY;
1367
1368         EXP_CHECK_DT_OP(exp, brw);
1369         EXP_COUNTER_INCREMENT(exp, brw);
1370
1371         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
1372                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
1373                        "or OBD_BRW_CHECK\n");
1374                 LBUG();
1375         }
1376
1377         rc = OBP(exp->exp_obd, brw)(cmd, exp, oinfo, oa_bufs, pg, oti);
1378         RETURN(rc);
1379 }
1380
1381 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
1382                              int objcount, struct obd_ioobj *obj,
1383                              struct niobuf_remote *remote, int *pages,
1384                              struct niobuf_local *local,
1385                              struct obd_trans_info *oti,
1386                              struct lustre_capa *capa)
1387 {
1388         int rc;
1389         ENTRY;
1390
1391         EXP_CHECK_DT_OP(exp, preprw);
1392         EXP_COUNTER_INCREMENT(exp, preprw);
1393
1394         rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, remote,
1395                                        pages, local, oti, capa);
1396         RETURN(rc);
1397 }
1398
1399 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
1400                                int objcount, struct obd_ioobj *obj,
1401                                struct niobuf_remote *rnb, int pages,
1402                                struct niobuf_local *local,
1403                                struct obd_trans_info *oti, int rc)
1404 {
1405         ENTRY;
1406
1407         EXP_CHECK_DT_OP(exp, commitrw);
1408         EXP_COUNTER_INCREMENT(exp, commitrw);
1409
1410         rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj,
1411                                          rnb, pages, local, oti, rc);
1412         RETURN(rc);
1413 }
1414
1415 static inline int obd_merge_lvb(struct obd_export *exp,
1416                                 struct lov_stripe_md *lsm,
1417                                 struct ost_lvb *lvb, int kms_only)
1418 {
1419         int rc;
1420         ENTRY;
1421
1422         EXP_CHECK_DT_OP(exp, merge_lvb);
1423         EXP_COUNTER_INCREMENT(exp, merge_lvb);
1424
1425         rc = OBP(exp->exp_obd, merge_lvb)(exp, lsm, lvb, kms_only);
1426         RETURN(rc);
1427 }
1428
1429 static inline int obd_adjust_kms(struct obd_export *exp,
1430                                  struct lov_stripe_md *lsm, obd_off size,
1431                                  int shrink)
1432 {
1433         int rc;
1434         ENTRY;
1435
1436         EXP_CHECK_DT_OP(exp, adjust_kms);
1437         EXP_COUNTER_INCREMENT(exp, adjust_kms);
1438
1439         rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
1440         RETURN(rc);
1441 }
1442
1443 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1444                                 int len, void *karg, void *uarg)
1445 {
1446         int rc;
1447         ENTRY;
1448
1449         EXP_CHECK_DT_OP(exp, iocontrol);
1450         EXP_COUNTER_INCREMENT(exp, iocontrol);
1451
1452         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1453         RETURN(rc);
1454 }
1455
1456 static inline int obd_enqueue_rqset(struct obd_export *exp,
1457                                     struct obd_info *oinfo,
1458                                     struct ldlm_enqueue_info *einfo)
1459 {
1460         struct ptlrpc_request_set *set = NULL;
1461         int rc;
1462         ENTRY;
1463
1464         EXP_CHECK_DT_OP(exp, enqueue);
1465         EXP_COUNTER_INCREMENT(exp, enqueue);
1466
1467         set =  ptlrpc_prep_set();
1468         if (set == NULL)
1469                 RETURN(-ENOMEM);
1470
1471         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1472         if (rc == 0)
1473                 rc = ptlrpc_set_wait(set);
1474         ptlrpc_set_destroy(set);
1475         RETURN(rc);
1476 }
1477
1478 static inline int obd_enqueue(struct obd_export *exp,
1479                               struct obd_info *oinfo,
1480                               struct ldlm_enqueue_info *einfo,
1481                               struct ptlrpc_request_set *set)
1482 {
1483         int rc;
1484         ENTRY;
1485
1486         EXP_CHECK_DT_OP(exp, enqueue);
1487         EXP_COUNTER_INCREMENT(exp, enqueue);
1488
1489         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1490         RETURN(rc);
1491 }
1492
1493 static inline int obd_change_cbdata(struct obd_export *exp,
1494                                     struct lov_stripe_md *lsm,
1495                                     ldlm_iterator_t it, void *data)
1496 {
1497         int rc;
1498         ENTRY;
1499
1500         EXP_CHECK_DT_OP(exp, change_cbdata);
1501         EXP_COUNTER_INCREMENT(exp, change_cbdata);
1502
1503         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1504         RETURN(rc);
1505 }
1506
1507 static inline int obd_find_cbdata(struct obd_export *exp,
1508                                   struct lov_stripe_md *lsm,
1509                                   ldlm_iterator_t it, void *data)
1510 {
1511         int rc;
1512         ENTRY;
1513
1514         EXP_CHECK_DT_OP(exp, find_cbdata);
1515         EXP_COUNTER_INCREMENT(exp, find_cbdata);
1516
1517         rc = OBP(exp->exp_obd, find_cbdata)(exp, lsm, it, data);
1518         RETURN(rc);
1519 }
1520
1521 static inline int obd_cancel(struct obd_export *exp,
1522                              struct lov_stripe_md *ea, __u32 mode,
1523                              struct lustre_handle *lockh)
1524 {
1525         int rc;
1526         ENTRY;
1527
1528         EXP_CHECK_DT_OP(exp, cancel);
1529         EXP_COUNTER_INCREMENT(exp, cancel);
1530
1531         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1532         RETURN(rc);
1533 }
1534
1535 static inline int obd_cancel_unused(struct obd_export *exp,
1536                                     struct lov_stripe_md *ea,
1537                                     ldlm_cancel_flags_t flags,
1538                                     void *opaque)
1539 {
1540         int rc;
1541         ENTRY;
1542
1543         EXP_CHECK_DT_OP(exp, cancel_unused);
1544         EXP_COUNTER_INCREMENT(exp, cancel_unused);
1545
1546         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1547         RETURN(rc);
1548 }
1549
1550 static inline int obd_pin(struct obd_export *exp, const struct lu_fid *fid,
1551                           struct obd_capa *oc, struct obd_client_handle *handle,
1552                           int flag)
1553 {
1554         int rc;
1555         ENTRY;
1556
1557         EXP_CHECK_DT_OP(exp, pin);
1558         EXP_COUNTER_INCREMENT(exp, pin);
1559
1560         rc = OBP(exp->exp_obd, pin)(exp, fid, oc, handle, flag);
1561         RETURN(rc);
1562 }
1563
1564 static inline int obd_unpin(struct obd_export *exp,
1565                             struct obd_client_handle *handle, int flag)
1566 {
1567         int rc;
1568         ENTRY;
1569
1570         EXP_CHECK_DT_OP(exp, unpin);
1571         EXP_COUNTER_INCREMENT(exp, unpin);
1572
1573         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1574         RETURN(rc);
1575 }
1576
1577
1578 static inline void obd_import_event(struct obd_device *obd,
1579                                     struct obd_import *imp,
1580                                     enum obd_import_event event)
1581 {
1582         ENTRY;
1583         if (!obd) {
1584                 CERROR("NULL device\n");
1585                 EXIT;
1586                 return;
1587         }
1588         if (obd->obd_set_up && OBP(obd, import_event)) {
1589                 OBD_COUNTER_INCREMENT(obd, import_event);
1590                 OBP(obd, import_event)(obd, imp, event);
1591         }
1592         EXIT;
1593 }
1594
1595 static inline int obd_llog_connect(struct obd_export *exp,
1596                                    struct llogd_conn_body *body)
1597 {
1598         int rc;
1599         ENTRY;
1600
1601         OBD_CHECK_DT_OP(exp->exp_obd, llog_connect, 0);
1602         EXP_COUNTER_INCREMENT(exp, llog_connect);
1603
1604         rc = OBP(exp->exp_obd, llog_connect)(exp, body);
1605         RETURN(rc);
1606 }
1607
1608
1609 static inline int obd_notify(struct obd_device *obd,
1610                              struct obd_device *watched,
1611                              enum obd_notify_event ev,
1612                              void *data)
1613 {
1614         int rc;
1615         ENTRY;
1616         OBD_CHECK_DEV(obd);
1617
1618         /* the check for async_recov is a complete hack - I'm hereby
1619            overloading the meaning to also mean "this was called from
1620            mds_postsetup".  I know that my mds is able to handle notifies
1621            by this point, and it needs to get them to execute mds_postrecov. */
1622         if (!obd->obd_set_up && !obd->obd_async_recov) {
1623                 CDEBUG(D_HA, "obd %s not set up\n", obd->obd_name);
1624                 RETURN(-EINVAL);
1625         }
1626
1627         if (!OBP(obd, notify)) {
1628                 CERROR("obd %s has no notify handler\n", obd->obd_name);
1629                 RETURN(-ENOSYS);
1630         }
1631
1632         OBD_COUNTER_INCREMENT(obd, notify);
1633         rc = OBP(obd, notify)(obd, watched, ev, data);
1634         RETURN(rc);
1635 }
1636
1637 static inline int obd_notify_observer(struct obd_device *observer,
1638                                       struct obd_device *observed,
1639                                       enum obd_notify_event ev,
1640                                       void *data)
1641 {
1642         int rc1;
1643         int rc2;
1644
1645         struct obd_notify_upcall *onu;
1646
1647         if (observer->obd_observer)
1648                 rc1 = obd_notify(observer->obd_observer, observed, ev, data);
1649         else
1650                 rc1 = 0;
1651         /*
1652          * Also, call non-obd listener, if any
1653          */
1654         onu = &observer->obd_upcall;
1655         if (onu->onu_upcall != NULL)
1656                 rc2 = onu->onu_upcall(observer, observed, ev,
1657                                       onu->onu_owner, NULL);
1658         else
1659                 rc2 = 0;
1660
1661         return rc1 ? rc1 : rc2;
1662 }
1663
1664 static inline int obd_quotacheck(struct obd_export *exp,
1665                                  struct obd_quotactl *oqctl)
1666 {
1667         int rc;
1668         ENTRY;
1669
1670         EXP_CHECK_DT_OP(exp, quotacheck);
1671         EXP_COUNTER_INCREMENT(exp, quotacheck);
1672
1673         rc = OBP(exp->exp_obd, quotacheck)(exp->exp_obd, exp, oqctl);
1674         RETURN(rc);
1675 }
1676
1677 static inline int obd_quotactl(struct obd_export *exp,
1678                                struct obd_quotactl *oqctl)
1679 {
1680         int rc;
1681         ENTRY;
1682
1683         EXP_CHECK_DT_OP(exp, quotactl);
1684         EXP_COUNTER_INCREMENT(exp, quotactl);
1685
1686         rc = OBP(exp->exp_obd, quotactl)(exp->exp_obd, exp, oqctl);
1687         RETURN(rc);
1688 }
1689
1690 static inline int obd_quota_adjust_qunit(struct obd_export *exp,
1691                                          struct quota_adjust_qunit *oqaq,
1692                                          struct lustre_quota_ctxt *qctxt,
1693                                          struct ptlrpc_request_set *set)
1694 {
1695 #if defined(LPROCFS) && defined(HAVE_QUOTA_SUPPORT)
1696         struct timeval work_start;
1697         struct timeval work_end;
1698         long timediff;
1699 #endif
1700         int rc;
1701         ENTRY;
1702
1703 #if defined(LPROCFS) && defined(HAVE_QUOTA_SUPPORT)
1704         if (qctxt)
1705                 cfs_gettimeofday(&work_start);
1706 #endif
1707         EXP_CHECK_DT_OP(exp, quota_adjust_qunit);
1708         EXP_COUNTER_INCREMENT(exp, quota_adjust_qunit);
1709
1710         rc = OBP(exp->exp_obd, quota_adjust_qunit)(exp, oqaq, qctxt, set);
1711
1712 #if defined(LPROCFS) && defined(HAVE_QUOTA_SUPPORT)
1713         if (qctxt) {
1714                 cfs_gettimeofday(&work_end);
1715                 timediff = cfs_timeval_sub(&work_end, &work_start, NULL);
1716                 lprocfs_counter_add(qctxt->lqc_stats, LQUOTA_ADJUST_QUNIT,
1717                                     timediff);
1718         }
1719 #endif
1720         RETURN(rc);
1721 }
1722
1723 static inline int obd_health_check(struct obd_device *obd)
1724 {
1725         /* returns: 0 on healthy
1726          *         >0 on unhealthy + reason code/flag
1727          *            however the only suppored reason == 1 right now
1728          *            We'll need to define some better reasons
1729          *            or flags in the future.
1730          *         <0 on error
1731          */
1732         int rc;
1733         ENTRY;
1734
1735         /* don't use EXP_CHECK_DT_OP, because NULL method is normal here */
1736         if (obd == NULL || !OBT(obd)) {
1737                 CERROR("cleaned up obd\n");
1738                 RETURN(-EOPNOTSUPP);
1739         }
1740         if (!obd->obd_set_up || obd->obd_stopping)
1741                 RETURN(0);
1742         if (!OBP(obd, health_check))
1743                 RETURN(0);
1744
1745         rc = OBP(obd, health_check)(obd);
1746         RETURN(rc);
1747 }
1748
1749 static inline int obd_register_observer(struct obd_device *obd,
1750                                         struct obd_device *observer)
1751 {
1752         ENTRY;
1753         OBD_CHECK_DEV(obd);
1754         cfs_down_write(&obd->obd_observer_link_sem);
1755         if (obd->obd_observer && observer) {
1756                 cfs_up_write(&obd->obd_observer_link_sem);
1757                 RETURN(-EALREADY);
1758         }
1759         obd->obd_observer = observer;
1760         cfs_up_write(&obd->obd_observer_link_sem);
1761         RETURN(0);
1762 }
1763
1764 static inline int obd_pin_observer(struct obd_device *obd,
1765                                    struct obd_device **observer)
1766 {
1767         ENTRY;
1768         cfs_down_read(&obd->obd_observer_link_sem);
1769         if (!obd->obd_observer) {
1770                 *observer = NULL;
1771                 cfs_up_read(&obd->obd_observer_link_sem);
1772                 RETURN(-ENOENT);
1773         }
1774         *observer = obd->obd_observer;
1775         RETURN(0);
1776 }
1777
1778 static inline int obd_unpin_observer(struct obd_device *obd)
1779 {
1780         ENTRY;
1781         cfs_up_read(&obd->obd_observer_link_sem);
1782         RETURN(0);
1783 }
1784
1785 #if 0
1786 static inline int obd_register_page_removal_cb(struct obd_export *exp,
1787                                                obd_page_removal_cb_t cb,
1788                                                obd_pin_extent_cb pin_cb)
1789 {
1790         int rc;
1791         ENTRY;
1792
1793         OBD_CHECK_DT_OP(exp->exp_obd, register_page_removal_cb, 0);
1794         OBD_COUNTER_INCREMENT(exp->exp_obd, register_page_removal_cb);
1795
1796         rc = OBP(exp->exp_obd, register_page_removal_cb)(exp, cb, pin_cb);
1797         RETURN(rc);
1798 }
1799
1800 static inline int obd_unregister_page_removal_cb(struct obd_export *exp,
1801                                                  obd_page_removal_cb_t cb)
1802 {
1803         int rc;
1804         ENTRY;
1805
1806         OBD_CHECK_DT_OP(exp->exp_obd, unregister_page_removal_cb, 0);
1807         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_page_removal_cb);
1808
1809         rc = OBP(exp->exp_obd, unregister_page_removal_cb)(exp, cb);
1810         RETURN(rc);
1811 }
1812
1813 static inline int obd_register_lock_cancel_cb(struct obd_export *exp,
1814                                               obd_lock_cancel_cb cb)
1815 {
1816         int rc;
1817         ENTRY;
1818
1819         OBD_CHECK_DT_OP(exp->exp_obd, register_lock_cancel_cb, 0);
1820         OBD_COUNTER_INCREMENT(exp->exp_obd, register_lock_cancel_cb);
1821
1822         rc = OBP(exp->exp_obd, register_lock_cancel_cb)(exp, cb);
1823         RETURN(rc);
1824 }
1825
1826 static inline int obd_unregister_lock_cancel_cb(struct obd_export *exp,
1827                                                  obd_lock_cancel_cb cb)
1828 {
1829         int rc;
1830         ENTRY;
1831
1832         OBD_CHECK_DT_OP(exp->exp_obd, unregister_lock_cancel_cb, 0);
1833         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_lock_cancel_cb);
1834
1835         rc = OBP(exp->exp_obd, unregister_lock_cancel_cb)(exp, cb);
1836         RETURN(rc);
1837 }
1838 #endif
1839
1840 /* metadata helpers */
1841 static inline int md_getstatus(struct obd_export *exp,
1842                                struct lu_fid *fid, struct obd_capa **pc)
1843 {
1844         int rc;
1845         ENTRY;
1846
1847         EXP_CHECK_MD_OP(exp, getstatus);
1848         EXP_MD_COUNTER_INCREMENT(exp, getstatus);
1849         rc = MDP(exp->exp_obd, getstatus)(exp, fid, pc);
1850         RETURN(rc);
1851 }
1852
1853 static inline int md_getattr(struct obd_export *exp, struct md_op_data *op_data,
1854                              struct ptlrpc_request **request)
1855 {
1856         int rc;
1857         ENTRY;
1858         EXP_CHECK_MD_OP(exp, getattr);
1859         EXP_MD_COUNTER_INCREMENT(exp, getattr);
1860         rc = MDP(exp->exp_obd, getattr)(exp, op_data, request);
1861         RETURN(rc);
1862 }
1863
1864 static inline int md_change_cbdata(struct obd_export *exp,
1865                                    const struct lu_fid *fid,
1866                                    ldlm_iterator_t it, void *data)
1867 {
1868         int rc;
1869         ENTRY;
1870         EXP_CHECK_MD_OP(exp, change_cbdata);
1871         EXP_MD_COUNTER_INCREMENT(exp, change_cbdata);
1872         rc = MDP(exp->exp_obd, change_cbdata)(exp, fid, it, data);
1873         RETURN(rc);
1874 }
1875
1876 static inline int md_find_cbdata(struct obd_export *exp,
1877                                  const struct lu_fid *fid,
1878                                  ldlm_iterator_t it, void *data)
1879 {
1880         int rc;
1881         ENTRY;
1882         EXP_CHECK_MD_OP(exp, find_cbdata);
1883         EXP_MD_COUNTER_INCREMENT(exp, find_cbdata);
1884         rc = MDP(exp->exp_obd, find_cbdata)(exp, fid, it, data);
1885         RETURN(rc);
1886 }
1887
1888 static inline int md_close(struct obd_export *exp, struct md_op_data *op_data,
1889                            struct md_open_data *mod,
1890                            struct ptlrpc_request **request)
1891 {
1892         int rc;
1893         ENTRY;
1894         EXP_CHECK_MD_OP(exp, close);
1895         EXP_MD_COUNTER_INCREMENT(exp, close);
1896         rc = MDP(exp->exp_obd, close)(exp, op_data, mod, request);
1897         RETURN(rc);
1898 }
1899
1900 static inline int md_create(struct obd_export *exp, struct md_op_data *op_data,
1901                             const void *data, int datalen, int mode, __u32 uid,
1902                             __u32 gid, cfs_cap_t cap_effective, __u64 rdev,
1903                             struct ptlrpc_request **request)
1904 {
1905         int rc;
1906         ENTRY;
1907         EXP_CHECK_MD_OP(exp, create);
1908         EXP_MD_COUNTER_INCREMENT(exp, create);
1909         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1910                                        uid, gid, cap_effective, rdev, request);
1911         RETURN(rc);
1912 }
1913
1914 static inline int md_done_writing(struct obd_export *exp,
1915                                   struct md_op_data *op_data,
1916                                   struct md_open_data *mod)
1917 {
1918         int rc;
1919         ENTRY;
1920         EXP_CHECK_MD_OP(exp, done_writing);
1921         EXP_MD_COUNTER_INCREMENT(exp, done_writing);
1922         rc = MDP(exp->exp_obd, done_writing)(exp, op_data, mod);
1923         RETURN(rc);
1924 }
1925
1926 static inline int md_enqueue(struct obd_export *exp,
1927                              struct ldlm_enqueue_info *einfo,
1928                              struct lookup_intent *it,
1929                              struct md_op_data *op_data,
1930                              struct lustre_handle *lockh,
1931                              void *lmm, int lmmsize,
1932                              struct ptlrpc_request **req,
1933                              int extra_lock_flags)
1934 {
1935         int rc;
1936         ENTRY;
1937         EXP_CHECK_MD_OP(exp, enqueue);
1938         EXP_MD_COUNTER_INCREMENT(exp, enqueue);
1939         rc = MDP(exp->exp_obd, enqueue)(exp, einfo, it, op_data, lockh,
1940                                         lmm, lmmsize, req, extra_lock_flags);
1941         RETURN(rc);
1942 }
1943
1944 static inline int md_getattr_name(struct obd_export *exp,
1945                                   struct md_op_data *op_data,
1946                                   struct ptlrpc_request **request)
1947 {
1948         int rc;
1949         ENTRY;
1950         EXP_CHECK_MD_OP(exp, getattr_name);
1951         EXP_MD_COUNTER_INCREMENT(exp, getattr_name);
1952         rc = MDP(exp->exp_obd, getattr_name)(exp, op_data, request);
1953         RETURN(rc);
1954 }
1955
1956 static inline int md_intent_lock(struct obd_export *exp,
1957                                  struct md_op_data *op_data, void *lmm,
1958                                  int lmmsize, struct lookup_intent *it,
1959                                  int flags, struct ptlrpc_request **reqp,
1960                                  ldlm_blocking_callback cb_blocking,
1961                                  int extra_lock_flags)
1962 {
1963         int rc;
1964         ENTRY;
1965         EXP_CHECK_MD_OP(exp, intent_lock);
1966         EXP_MD_COUNTER_INCREMENT(exp, intent_lock);
1967         rc = MDP(exp->exp_obd, intent_lock)(exp, op_data, lmm, lmmsize,
1968                                             it, flags, reqp, cb_blocking,
1969                                             extra_lock_flags);
1970         RETURN(rc);
1971 }
1972
1973 static inline int md_link(struct obd_export *exp, struct md_op_data *op_data,
1974                           struct ptlrpc_request **request)
1975 {
1976         int rc;
1977         ENTRY;
1978         EXP_CHECK_MD_OP(exp, link);
1979         EXP_MD_COUNTER_INCREMENT(exp, link);
1980         rc = MDP(exp->exp_obd, link)(exp, op_data, request);
1981         RETURN(rc);
1982 }
1983
1984 static inline int md_rename(struct obd_export *exp, struct md_op_data *op_data,
1985                             const char *old, int oldlen, const char *new,
1986                             int newlen, struct ptlrpc_request **request)
1987 {
1988         int rc;
1989         ENTRY;
1990         EXP_CHECK_MD_OP(exp, rename);
1991         EXP_MD_COUNTER_INCREMENT(exp, rename);
1992         rc = MDP(exp->exp_obd, rename)(exp, op_data, old, oldlen, new,
1993                                        newlen, request);
1994         RETURN(rc);
1995 }
1996
1997 static inline int md_is_subdir(struct obd_export *exp,
1998                                const struct lu_fid *pfid,
1999                                const struct lu_fid *cfid,
2000                                struct ptlrpc_request **request)
2001 {
2002         int rc;
2003         ENTRY;
2004         EXP_CHECK_MD_OP(exp, is_subdir);
2005         EXP_MD_COUNTER_INCREMENT(exp, is_subdir);
2006         rc = MDP(exp->exp_obd, is_subdir)(exp, pfid, cfid, request);
2007         RETURN(rc);
2008 }
2009
2010 static inline int md_setattr(struct obd_export *exp, struct md_op_data *op_data,
2011                              void *ea, int ealen, void *ea2, int ea2len,
2012                              struct ptlrpc_request **request,
2013                              struct md_open_data **mod)
2014 {
2015         int rc;
2016         ENTRY;
2017         EXP_CHECK_MD_OP(exp, setattr);
2018         EXP_MD_COUNTER_INCREMENT(exp, setattr);
2019         rc = MDP(exp->exp_obd, setattr)(exp, op_data, ea, ealen,
2020                                         ea2, ea2len, request, mod);
2021         RETURN(rc);
2022 }
2023
2024 static inline int md_sync(struct obd_export *exp, const struct lu_fid *fid,
2025                           struct obd_capa *oc, struct ptlrpc_request **request)
2026 {
2027         int rc;
2028         ENTRY;
2029         EXP_CHECK_MD_OP(exp, sync);
2030         EXP_MD_COUNTER_INCREMENT(exp, sync);
2031         rc = MDP(exp->exp_obd, sync)(exp, fid, oc, request);
2032         RETURN(rc);
2033 }
2034
2035 static inline int md_readpage(struct obd_export *exp, const struct lu_fid *fid,
2036                               struct obd_capa *oc, __u64 offset,
2037                               struct page **pages, unsigned npages,
2038                               struct ptlrpc_request **request)
2039 {
2040         int rc;
2041         ENTRY;
2042         EXP_CHECK_MD_OP(exp, readpage);
2043         EXP_MD_COUNTER_INCREMENT(exp, readpage);
2044         rc = MDP(exp->exp_obd, readpage)(exp, fid, oc, offset, pages, npages,
2045                                          request);
2046         RETURN(rc);
2047 }
2048
2049 static inline int md_unlink(struct obd_export *exp, struct md_op_data *op_data,
2050                             struct ptlrpc_request **request)
2051 {
2052         int rc;
2053         ENTRY;
2054         EXP_CHECK_MD_OP(exp, unlink);
2055         EXP_MD_COUNTER_INCREMENT(exp, unlink);
2056         rc = MDP(exp->exp_obd, unlink)(exp, op_data, request);
2057         RETURN(rc);
2058 }
2059
2060 static inline int md_get_lustre_md(struct obd_export *exp,
2061                                    struct ptlrpc_request *req,
2062                                    struct obd_export *dt_exp,
2063                                    struct obd_export *md_exp,
2064                                    struct lustre_md *md)
2065 {
2066         ENTRY;
2067         EXP_CHECK_MD_OP(exp, get_lustre_md);
2068         EXP_MD_COUNTER_INCREMENT(exp, get_lustre_md);
2069         RETURN(MDP(exp->exp_obd, get_lustre_md)(exp, req, dt_exp, md_exp, md));
2070 }
2071
2072 static inline int md_free_lustre_md(struct obd_export *exp,
2073                                     struct lustre_md *md)
2074 {
2075         ENTRY;
2076         EXP_CHECK_MD_OP(exp, free_lustre_md);
2077         EXP_MD_COUNTER_INCREMENT(exp, free_lustre_md);
2078         RETURN(MDP(exp->exp_obd, free_lustre_md)(exp, md));
2079 }
2080
2081 static inline int md_setxattr(struct obd_export *exp,
2082                               const struct lu_fid *fid, struct obd_capa *oc,
2083                               obd_valid valid, const char *name,
2084                               const char *input, int input_size,
2085                               int output_size, int flags, __u32 suppgid,
2086                               struct ptlrpc_request **request)
2087 {
2088         ENTRY;
2089         EXP_CHECK_MD_OP(exp, setxattr);
2090         EXP_MD_COUNTER_INCREMENT(exp, setxattr);
2091         RETURN(MDP(exp->exp_obd, setxattr)(exp, fid, oc, valid, name, input,
2092                                            input_size, output_size, flags,
2093                                            suppgid, request));
2094 }
2095
2096 static inline int md_getxattr(struct obd_export *exp,
2097                               const struct lu_fid *fid, struct obd_capa *oc,
2098                               obd_valid valid, const char *name,
2099                               const char *input, int input_size,
2100                               int output_size, int flags,
2101                               struct ptlrpc_request **request)
2102 {
2103         ENTRY;
2104         EXP_CHECK_MD_OP(exp, getxattr);
2105         EXP_MD_COUNTER_INCREMENT(exp, getxattr);
2106         RETURN(MDP(exp->exp_obd, getxattr)(exp, fid, oc, valid, name, input,
2107                                            input_size, output_size, flags,
2108                                            request));
2109 }
2110
2111 static inline int md_set_open_replay_data(struct obd_export *exp,
2112                                           struct obd_client_handle *och,
2113                                           struct ptlrpc_request *open_req)
2114 {
2115         ENTRY;
2116         EXP_CHECK_MD_OP(exp, set_open_replay_data);
2117         EXP_MD_COUNTER_INCREMENT(exp, set_open_replay_data);
2118         RETURN(MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req));
2119 }
2120
2121 static inline int md_clear_open_replay_data(struct obd_export *exp,
2122                                             struct obd_client_handle *och)
2123 {
2124         ENTRY;
2125         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
2126         EXP_MD_COUNTER_INCREMENT(exp, clear_open_replay_data);
2127         RETURN(MDP(exp->exp_obd, clear_open_replay_data)(exp, och));
2128 }
2129
2130 static inline int md_set_lock_data(struct obd_export *exp,
2131                                    __u64 *lockh, void *data, __u32 *bits)
2132 {
2133         ENTRY;
2134         EXP_CHECK_MD_OP(exp, set_lock_data);
2135         EXP_MD_COUNTER_INCREMENT(exp, set_lock_data);
2136         RETURN(MDP(exp->exp_obd, set_lock_data)(exp, lockh, data, bits));
2137 }
2138
2139 static inline int md_cancel_unused(struct obd_export *exp,
2140                                    const struct lu_fid *fid,
2141                                    ldlm_policy_data_t *policy,
2142                                    ldlm_mode_t mode,
2143                                    ldlm_cancel_flags_t flags,
2144                                    void *opaque)
2145 {
2146         int rc;
2147         ENTRY;
2148
2149         EXP_CHECK_MD_OP(exp, cancel_unused);
2150         EXP_MD_COUNTER_INCREMENT(exp, cancel_unused);
2151
2152         rc = MDP(exp->exp_obd, cancel_unused)(exp, fid, policy, mode,
2153                                               flags, opaque);
2154         RETURN(rc);
2155 }
2156
2157 static inline ldlm_mode_t md_lock_match(struct obd_export *exp, int flags,
2158                                         const struct lu_fid *fid,
2159                                         ldlm_type_t type,
2160                                         ldlm_policy_data_t *policy,
2161                                         ldlm_mode_t mode,
2162                                         struct lustre_handle *lockh)
2163 {
2164         ENTRY;
2165         EXP_CHECK_MD_OP(exp, lock_match);
2166         EXP_MD_COUNTER_INCREMENT(exp, lock_match);
2167         RETURN(MDP(exp->exp_obd, lock_match)(exp, flags, fid, type,
2168                                              policy, mode, lockh));
2169 }
2170
2171 static inline int md_init_ea_size(struct obd_export *exp, int easize,
2172                                   int def_asize, int cookiesize)
2173 {
2174         ENTRY;
2175         EXP_CHECK_MD_OP(exp, init_ea_size);
2176         EXP_MD_COUNTER_INCREMENT(exp, init_ea_size);
2177         RETURN(MDP(exp->exp_obd, init_ea_size)(exp, easize, def_asize,
2178                                                cookiesize));
2179 }
2180
2181 static inline int md_get_remote_perm(struct obd_export *exp,
2182                                      const struct lu_fid *fid,
2183                                      struct obd_capa *oc, __u32 suppgid,
2184                                      struct ptlrpc_request **request)
2185 {
2186         ENTRY;
2187         EXP_CHECK_MD_OP(exp, get_remote_perm);
2188         EXP_MD_COUNTER_INCREMENT(exp, get_remote_perm);
2189         RETURN(MDP(exp->exp_obd, get_remote_perm)(exp, fid, oc, suppgid,
2190                                                   request));
2191 }
2192
2193 static inline int md_renew_capa(struct obd_export *exp, struct obd_capa *ocapa,
2194                                 renew_capa_cb_t cb)
2195 {
2196         int rc;
2197         ENTRY;
2198         EXP_CHECK_MD_OP(exp, renew_capa);
2199         EXP_MD_COUNTER_INCREMENT(exp, renew_capa);
2200         rc = MDP(exp->exp_obd, renew_capa)(exp, ocapa, cb);
2201         RETURN(rc);
2202 }
2203
2204 static inline int md_unpack_capa(struct obd_export *exp,
2205                                  struct ptlrpc_request *req,
2206                                  const struct req_msg_field *field,
2207                                  struct obd_capa **oc)
2208 {
2209         int rc;
2210         ENTRY;
2211         EXP_CHECK_MD_OP(exp, unpack_capa);
2212         EXP_MD_COUNTER_INCREMENT(exp, unpack_capa);
2213         rc = MDP(exp->exp_obd, unpack_capa)(exp, req, field, oc);
2214         RETURN(rc);
2215 }
2216
2217 static inline int md_intent_getattr_async(struct obd_export *exp,
2218                                           struct md_enqueue_info *minfo,
2219                                           struct ldlm_enqueue_info *einfo)
2220 {
2221         int rc;
2222         ENTRY;
2223         EXP_CHECK_MD_OP(exp, intent_getattr_async);
2224         EXP_MD_COUNTER_INCREMENT(exp, intent_getattr_async);
2225         rc = MDP(exp->exp_obd, intent_getattr_async)(exp, minfo, einfo);
2226         RETURN(rc);
2227 }
2228
2229 static inline int md_revalidate_lock(struct obd_export *exp,
2230                                      struct lookup_intent *it,
2231                                      struct lu_fid *fid)
2232 {
2233         int rc;
2234         ENTRY;
2235         EXP_CHECK_MD_OP(exp, revalidate_lock);
2236         EXP_MD_COUNTER_INCREMENT(exp, revalidate_lock);
2237         rc = MDP(exp->exp_obd, revalidate_lock)(exp, it, fid);
2238         RETURN(rc);
2239 }
2240
2241
2242 /* OBD Metadata Support */
2243
2244 extern int obd_init_caches(void);
2245 extern void obd_cleanup_caches(void);
2246
2247 /* support routines */
2248 extern cfs_mem_cache_t *obdo_cachep;
2249
2250 #define OBDO_ALLOC(ptr)                                                       \
2251 do {                                                                          \
2252         OBD_SLAB_ALLOC_PTR_GFP((ptr), obdo_cachep, CFS_ALLOC_IO);             \
2253 } while(0)
2254
2255 #define OBDO_FREE(ptr)                                                        \
2256 do {                                                                          \
2257         OBD_SLAB_FREE_PTR((ptr), obdo_cachep);                                \
2258 } while(0)
2259
2260
2261 static inline void obdo2fid(struct obdo *oa, struct lu_fid *fid)
2262 {
2263         /* something here */
2264 }
2265
2266 static inline void fid2obdo(struct lu_fid *fid, struct obdo *oa)
2267 {
2268         /* something here */
2269 }
2270
2271 /* I'm as embarrassed about this as you are.
2272  *
2273  * <shaver> // XXX do not look into _superhack with remaining eye
2274  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
2275 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
2276
2277 /* sysctl.c */
2278 extern void obd_sysctl_init (void);
2279 extern void obd_sysctl_clean (void);
2280
2281 /* uuid.c  */
2282 typedef __u8 class_uuid_t[16];
2283 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
2284
2285 /* lustre_peer.c    */
2286 int lustre_uuid_to_peer(const char *uuid, lnet_nid_t *peer_nid, int index);
2287 int class_add_uuid(const char *uuid, __u64 nid);
2288 int class_del_uuid (const char *uuid);
2289 int class_check_uuid(struct obd_uuid *uuid, __u64 nid);
2290 void class_init_uuidlist(void);
2291 void class_exit_uuidlist(void);
2292
2293 /* mea.c */
2294 int mea_name2idx(struct lmv_stripe_md *mea, const char *name, int namelen);
2295 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
2296
2297 /* prng.c */
2298 #define ll_generate_random_uuid(uuid_out) cfs_get_random_bytes(uuid_out, sizeof(class_uuid_t))
2299
2300 #endif /* __LINUX_OBD_CLASS_H */