lustre/include/obd_class.h

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