lustre/include/obd_class.h

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, 2013, Intel Corporation.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  */
  36 #ifndef __CLASS_OBD_H
  37 #define __CLASS_OBD_H
  38
  39 #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 #define OBD_STATFS_NODELAY      0x0001  /* requests should be send without delay
  62                                          * and resends for avoid deadlocks */
  63 #define OBD_STATFS_FROM_CACHE   0x0002  /* the statfs callback should not update
  64                                          * obd_osfs_age */
  65 #define OBD_STATFS_PTLRPCD      0x0004  /* requests will be sent via ptlrpcd
  66                                          * instead of a specific set. This
  67                                          * means that we cannot rely on the set
  68                                          * interpret routine to be called.
  69                                          * lov_statfs_fini() must thus be called
  70                                          * by the request interpret routine */
  71 #define OBD_STATFS_FOR_MDT0     0x0008  /* The statfs is only for retrieving
  72                                          * information from MDT0. */
  73
  74 /* OBD Device Declarations */
  75 extern struct obd_device *obd_devs[MAX_OBD_DEVICES];
  76 extern rwlock_t obd_dev_lock;
  77
  78 /* OBD Operations Declarations */
  79 extern struct obd_device *class_conn2obd(struct lustre_handle *);
  80 extern struct obd_device *class_exp2obd(struct obd_export *);
  81 extern int class_handle_ioctl(unsigned int cmd, unsigned long arg);
  82 extern int lustre_get_jobid(char *jobid);
  83
  84 struct lu_device_type;
  85
  86 /* genops.c */
  87 struct obd_export *class_conn2export(struct lustre_handle *);
  88 int class_register_type(struct obd_ops *, struct md_ops *, bool enable_proc,
  89                         struct lprocfs_seq_vars *module_vars,
  90 #ifndef HAVE_ONLY_PROCFS_SEQ
  91                         struct lprocfs_vars *,
  92 #endif
  93                         const char *nm, struct lu_device_type *ldt);
  94 int class_unregister_type(const char *nm);
  95
  96 struct obd_device *class_newdev(const char *type_name, const char *name);
  97 void class_release_dev(struct obd_device *obd);
  98
  99 int class_name2dev(const char *name);
 100 struct obd_device *class_name2obd(const char *name);
 101 int class_uuid2dev(struct obd_uuid *uuid);
 102 struct obd_device *class_uuid2obd(struct obd_uuid *uuid);
 103 void class_obd_list(void);
 104 struct obd_device * class_find_client_obd(struct obd_uuid *tgt_uuid,
 105                                           const char * typ_name,
 106                                           struct obd_uuid *grp_uuid);
 107 struct obd_device * class_devices_in_group(struct obd_uuid *grp_uuid,
 108                                            int *next);
 109 struct obd_device * class_num2obd(int num);
 110 int get_devices_count(void);
 111
 112 int class_notify_sptlrpc_conf(const char *fsname, int namelen);
 113
 114 char *obd_export_nid2str(struct obd_export *exp);
 115
 116 int obd_export_evict_by_nid(struct obd_device *obd, const char *nid);
 117 int obd_export_evict_by_uuid(struct obd_device *obd, const char *uuid);
 118 int obd_connect_flags2str(char *page, int count, __u64 flags, char *sep);
 119
 120 int obd_zombie_impexp_init(void);
 121 void obd_zombie_impexp_stop(void);
 122 void obd_zombie_impexp_cull(void);
 123 void obd_zombie_barrier(void);
 124 void obd_exports_barrier(struct obd_device *obd);
 125 int kuc_len(int payload_len);
 126 struct kuc_hdr * kuc_ptr(void *p);
 127 int kuc_ispayload(void *p);
 128 void *kuc_alloc(int payload_len, int transport, int type);
 129 void kuc_free(void *p, int payload_len);
 130 int obd_get_request_slot(struct client_obd *cli);
 131 void obd_put_request_slot(struct client_obd *cli);
 132 __u32 obd_get_max_rpcs_in_flight(struct client_obd *cli);
 133 int obd_set_max_rpcs_in_flight(struct client_obd *cli, __u32 max);
 134
 135 struct llog_handle;
 136 struct llog_rec_hdr;
 137 typedef int (*llog_cb_t)(const struct lu_env *, struct llog_handle *,
 138                          struct llog_rec_hdr *, void *);
 139 /* obd_config.c */
 140 struct lustre_cfg *lustre_cfg_rename(struct lustre_cfg *cfg,
 141                                      const char *new_name);
 142 int class_process_config(struct lustre_cfg *lcfg);
 143 #ifndef HAVE_ONLY_PROCFS_SEQ
 144 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
 145                              struct lustre_cfg *lcfg, void *data);
 146 #endif
 147 int class_process_proc_seq_param(char *prefix, struct lprocfs_seq_vars *lvars,
 148                                  struct lustre_cfg *lcfg, void *data);
 149 int class_attach(struct lustre_cfg *lcfg);
 150 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
 151 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg);
 152 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg);
 153 struct obd_device *class_incref(struct obd_device *obd,
 154                                 const char *scope, const void *source);
 155 void class_decref(struct obd_device *obd,
 156                   const char *scope, const void *source);
 157 void dump_exports(struct obd_device *obd, int locks);
 158 int class_config_llog_handler(const struct lu_env *env,
 159                               struct llog_handle *handle,
 160                               struct llog_rec_hdr *rec, void *data);
 161 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg);
 162 int class_add_uuid(const char *uuid, __u64 nid);
 163
 164 #define CFG_F_START     0x01   /* Set when we start updating from a log */
 165 #define CFG_F_MARKER    0x02   /* We are within a maker */
 166 #define CFG_F_SKIP      0x04   /* We should ignore this cfg command */
 167 #define CFG_F_COMPAT146 0x08   /* Allow old-style logs */
 168 #define CFG_F_EXCLUDE   0x10   /* OST exclusion list */
 169
 170 /* Passed as data param to class_config_parse_llog */
 171 struct config_llog_instance {
 172         char                    *cfg_obdname;
 173         void                    *cfg_instance;
 174         struct super_block      *cfg_sb;
 175         struct obd_uuid          cfg_uuid;
 176         llog_cb_t                cfg_callback;
 177         int                      cfg_last_idx; /* for partial llog processing */
 178         int                      cfg_flags;
 179         __u32                    cfg_lwp_idx;
 180 };
 181 int class_config_parse_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
 182                             char *name, struct config_llog_instance *cfg);
 183 int class_config_dump_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
 184                            char *name, struct config_llog_instance *cfg);
 185
 186 enum {
 187         CONFIG_T_CONFIG  = 0,
 188         CONFIG_T_SPTLRPC = 1,
 189         CONFIG_T_RECOVER = 2,
 190         CONFIG_T_PARAMS  = 3,
 191         CONFIG_T_MAX     = 4
 192 };
 193
 194 #define PARAMS_FILENAME "params"
 195 #define LCTL_UPCALL     "lctl"
 196
 197 /* list of active configuration logs  */
 198 struct config_llog_data {
 199         struct ldlm_res_id          cld_resid;
 200         struct config_llog_instance cld_cfg;
 201         cfs_list_t                  cld_list_chain;
 202         atomic_t                    cld_refcount;
 203         struct config_llog_data    *cld_sptlrpc;/* depended sptlrpc log */
 204         struct config_llog_data    *cld_params; /* common parameters log */
 205         struct config_llog_data    *cld_recover;/* imperative recover log */
 206         struct obd_export          *cld_mgcexp;
 207         struct mutex                cld_lock;
 208         int                         cld_type;
 209         unsigned int                cld_stopping:1, /* we were told to stop
 210                                                      * watching */
 211                                     cld_lostlock:1; /* lock not requeued */
 212         char                        cld_logname[0];
 213 };
 214
 215 struct lustre_profile {
 216         cfs_list_t       lp_list;
 217         char            *lp_profile;
 218         char            *lp_dt;
 219         char            *lp_md;
 220 };
 221
 222 struct lustre_profile *class_get_profile(const char * prof);
 223 void class_del_profile(const char *prof);
 224 void class_del_profiles(void);
 225
 226 #if LUSTRE_TRACKS_LOCK_EXP_REFS
 227
 228 void __class_export_add_lock_ref(struct obd_export *, struct ldlm_lock *);
 229 void __class_export_del_lock_ref(struct obd_export *, struct ldlm_lock *);
 230 extern void (*class_export_dump_hook)(struct obd_export *);
 231
 232 #else
 233
 234 #define __class_export_add_lock_ref(exp, lock)             do {} while(0)
 235 #define __class_export_del_lock_ref(exp, lock)             do {} while(0)
 236
 237 #endif
 238
 239 #define class_export_rpc_inc(exp)                                       \
 240 ({                                                                      \
 241         atomic_inc(&(exp)->exp_rpc_count);                              \
 242         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",    \
 243                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 244 })
 245
 246 #define class_export_rpc_dec(exp)                                       \
 247 ({                                                                      \
 248         LASSERT_ATOMIC_POS(&exp->exp_rpc_count);                        \
 249         atomic_dec(&(exp)->exp_rpc_count);                              \
 250         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",    \
 251                (exp), atomic_read(&(exp)->exp_rpc_count));              \
 252 })
 253
 254 #define class_export_lock_get(exp, lock)                                \
 255 ({                                                                      \
 256         atomic_inc(&(exp)->exp_locks_count);                            \
 257         __class_export_add_lock_ref(exp, lock);                         \
 258         CDEBUG(D_INFO, "lock GETting export %p : new locks_count %d\n", \
 259                (exp), atomic_read(&(exp)->exp_locks_count));            \
 260         class_export_get(exp);                                          \
 261 })
 262
 263 #define class_export_lock_put(exp, lock)                                \
 264 ({                                                                      \
 265         LASSERT_ATOMIC_POS(&exp->exp_locks_count);                      \
 266         atomic_dec(&(exp)->exp_locks_count);                            \
 267         __class_export_del_lock_ref(exp, lock);                         \
 268         CDEBUG(D_INFO, "lock PUTting export %p : new locks_count %d\n", \
 269                (exp), atomic_read(&(exp)->exp_locks_count));            \
 270         class_export_put(exp);                                          \
 271 })
 272
 273 #define class_export_cb_get(exp)                                        \
 274 ({                                                                      \
 275         atomic_inc(&(exp)->exp_cb_count);                               \
 276         CDEBUG(D_INFO, "callback GETting export %p : new cb_count %d\n",\
 277                (exp), atomic_read(&(exp)->exp_cb_count));               \
 278         class_export_get(exp);                                          \
 279 })
 280
 281 #define class_export_cb_put(exp)                                        \
 282 ({                                                                      \
 283         LASSERT_ATOMIC_POS(&exp->exp_cb_count);                         \
 284         atomic_dec(&(exp)->exp_cb_count);                               \
 285         CDEBUG(D_INFO, "callback PUTting export %p : new cb_count %d\n",\
 286                (exp), atomic_read(&(exp)->exp_cb_count));               \
 287         class_export_put(exp);                                          \
 288 })
 289
 290 /* genops.c */
 291 struct obd_export *class_export_get(struct obd_export *exp);
 292 void class_export_put(struct obd_export *exp);
 293 struct obd_export *class_new_export(struct obd_device *obddev,
 294                                     struct obd_uuid *cluuid);
 295 void class_unlink_export(struct obd_export *exp);
 296
 297 struct obd_import *class_import_get(struct obd_import *);
 298 void class_import_put(struct obd_import *);
 299 struct obd_import *class_new_import(struct obd_device *obd);
 300 void class_destroy_import(struct obd_import *exp);
 301
 302 struct obd_type *class_search_type(const char *name);
 303 struct obd_type *class_get_type(const char *name);
 304 void class_put_type(struct obd_type *type);
 305 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 306                   struct obd_uuid *cluuid);
 307 int class_disconnect(struct obd_export *exp);
 308 void class_fail_export(struct obd_export *exp);
 309 int class_connected_export(struct obd_export *exp);
 310 void class_disconnect_exports(struct obd_device *obddev);
 311 int class_manual_cleanup(struct obd_device *obd);
 312 void class_disconnect_stale_exports(struct obd_device *,
 313                                     int (*test_export)(struct obd_export *));
 314 static inline enum obd_option exp_flags_from_obd(struct obd_device *obd)
 315 {
 316         return ((obd->obd_fail ? OBD_OPT_FAILOVER : 0) |
 317                 (obd->obd_force ? OBD_OPT_FORCE : 0) |
 318                 (obd->obd_abort_recovery ? OBD_OPT_ABORT_RECOV : 0) |
 319                 0);
 320 }
 321
 322 #ifdef HAVE_SERVER_SUPPORT
 323 static inline struct lu_target *class_exp2tgt(struct obd_export *exp)
 324 {
 325         LASSERT(exp->exp_obd);
 326         return exp->exp_obd->u.obt.obt_lut;
 327 }
 328
 329 static inline struct lr_server_data *class_server_data(struct obd_device *obd)
 330 {
 331         LASSERT(obd->u.obt.obt_lut);
 332         return &obd->u.obt.obt_lut->lut_lsd;
 333 }
 334 #endif
 335
 336 void obdo_cpy_md(struct obdo *dst, const struct obdo *src, obd_flag valid);
 337 void obdo_to_ioobj(const struct obdo *oa, struct obd_ioobj *ioobj);
 338 void md_from_obdo(struct md_op_data *op_data, const struct obdo *oa,
 339                   obd_flag valid);
 340
 341 #define OBT(dev)        (dev)->obd_type
 342 #define OBP(dev, op)    (dev)->obd_type->typ_dt_ops->o_ ## op
 343 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
 344 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 345
 346 /* Ensure obd_setup: used for cleanup which must be called
 347    while obd is stopping */
 348 #define OBD_CHECK_DEV(obd)                                      \
 349 do {                                                            \
 350         if (!(obd)) {                                           \
 351                 CERROR("NULL device\n");                        \
 352                 RETURN(-ENODEV);                                \
 353         }                                                       \
 354 } while (0)
 355
 356 /* ensure obd_setup and !obd_stopping */
 357 #define OBD_CHECK_DEV_ACTIVE(obd)                               \
 358 do {                                                            \
 359         OBD_CHECK_DEV(obd);                                     \
 360         if (!(obd)->obd_set_up || (obd)->obd_stopping) {        \
 361                 CERROR("Device %d not setup\n",                 \
 362                        (obd)->obd_minor);                       \
 363                 RETURN(-ENODEV);                                \
 364         }                                                       \
 365 } while (0)
 366
 367
 368 #ifdef LPROCFS
 369 #define OBD_COUNTER_OFFSET(op)                                                 \
 370         ((offsetof(struct obd_ops, o_ ## op) -                                 \
 371           offsetof(struct obd_ops, o_iocontrol))                               \
 372          / sizeof(((struct obd_ops *)NULL)->o_iocontrol))
 373
 374 /* The '- 1' below is for o_owner. */
 375 #define NUM_OBD_STATS                                                          \
 376         (sizeof(struct obd_ops) /                                              \
 377          sizeof(((struct obd_ops *)NULL)->o_iocontrol) - 1)
 378
 379 #define OBD_COUNTER_INCREMENT(obd, op)                                         \
 380         lprocfs_counter_incr((obd)->obd_stats,                                 \
 381                              (obd)->obd_cntr_base + OBD_COUNTER_OFFSET(op))
 382
 383 #define EXP_COUNTER_INCREMENT(exp, op)                                         \
 384         do {                                                                   \
 385                 unsigned int _off;                                             \
 386                 _off = (exp)->exp_obd->obd_cntr_base + OBD_COUNTER_OFFSET(op); \
 387                 lprocfs_counter_incr((exp)->exp_obd->obd_stats, _off);         \
 388                 if ((exp)->exp_obd->obd_uses_nid_stats &&                      \
 389                     (exp)->exp_nid_stats != NULL)                              \
 390                         lprocfs_counter_incr((exp)->exp_nid_stats->nid_stats,  \
 391                                              _off);                            \
 392         } while (0)
 393
 394 #define _MD_COUNTER_OFFSET(m_op)                                               \
 395         ((offsetof(struct md_ops, m_op) -                                      \
 396           offsetof(struct md_ops, MD_STATS_FIRST_OP)) /                        \
 397          sizeof(((struct md_ops *)NULL)->MD_STATS_FIRST_OP))
 398
 399 #define MD_COUNTER_OFFSET(op) _MD_COUNTER_OFFSET(m_ ## op)
 400
 401 #define NUM_MD_STATS                                                           \
 402         (_MD_COUNTER_OFFSET(MD_STATS_LAST_OP) -                                \
 403          _MD_COUNTER_OFFSET(MD_STATS_FIRST_OP) + 1)
 404
 405 /* Note that we only increment md counters for ops whose offset is less
 406  * than NUM_MD_STATS. This is explained in a comment in the definition
 407  * of struct md_ops. */
 408 #define EXP_MD_COUNTER_INCREMENT(exp, op)                                      \
 409         do {                                                                   \
 410                 if (MD_COUNTER_OFFSET(op) < NUM_MD_STATS)                      \
 411                         lprocfs_counter_incr((exp)->exp_obd->obd_md_stats,     \
 412                                         (exp)->exp_obd->obd_md_cntr_base +     \
 413                                         MD_COUNTER_OFFSET(op));                \
 414         } while (0)
 415
 416 #else
 417 #define OBD_COUNTER_OFFSET(op)
 418 #define OBD_COUNTER_INCREMENT(obd, op)
 419 #define EXP_COUNTER_INCREMENT(exp, op)
 420 #define EXP_MD_COUNTER_INCREMENT(exp, op)
 421 #endif
 422
 423 static inline int lprocfs_nid_ldlm_stats_init(struct nid_stat* tmp)
 424 {
 425         /* Always add in ldlm_stats */
 426         tmp->nid_ldlm_stats = lprocfs_alloc_stats(LDLM_LAST_OPC - LDLM_FIRST_OPC
 427                                                   ,LPROCFS_STATS_FLAG_NOPERCPU);
 428         if (tmp->nid_ldlm_stats == NULL)
 429                 return -ENOMEM;
 430
 431         lprocfs_init_ldlm_stats(tmp->nid_ldlm_stats);
 432
 433         return lprocfs_register_stats(tmp->nid_proc, "ldlm_stats",
 434                                       tmp->nid_ldlm_stats);
 435 }
 436
 437 #define EXP_CHECK_MD_OP(exp, op)                                \
 438 do {                                                            \
 439         if ((exp) == NULL) {                                    \
 440                 CERROR("obd_" #op ": NULL export\n");           \
 441                 RETURN(-ENODEV);                                \
 442         }                                                       \
 443         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 444                 CERROR("obd_" #op ": cleaned up obd\n");        \
 445                 RETURN(-EOPNOTSUPP);                            \
 446         }                                                       \
 447         if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
 448                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 449                        (exp)->exp_obd->obd_name,                \
 450                        (exp)->exp_obd->obd_minor);              \
 451                 RETURN(-EOPNOTSUPP);                            \
 452         }                                                       \
 453 } while (0)
 454
 455
 456 #define OBD_CHECK_DT_OP(obd, op, err)                           \
 457 do {                                                            \
 458         if (!OBT(obd) || !OBP((obd), op)) {                     \
 459                 if (err)                                        \
 460                         CERROR("obd_" #op ": dev %d no operation\n",    \
 461                                obd->obd_minor);                 \
 462                 RETURN(err);                                    \
 463         }                                                       \
 464 } while (0)
 465
 466 #define EXP_CHECK_DT_OP(exp, op)                                \
 467 do {                                                            \
 468         if ((exp) == NULL) {                                    \
 469                 CERROR("obd_" #op ": NULL export\n");           \
 470                 RETURN(-ENODEV);                                \
 471         }                                                       \
 472         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 473                 CERROR("obd_" #op ": cleaned up obd\n");        \
 474                 RETURN(-EOPNOTSUPP);                            \
 475         }                                                       \
 476         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 477                 CERROR("obd_" #op ": dev %d no operation\n",    \
 478                        (exp)->exp_obd->obd_minor);              \
 479                 RETURN(-EOPNOTSUPP);                            \
 480         }                                                       \
 481 } while (0)
 482
 483 #define CTXT_CHECK_OP(ctxt, op, err)                                 \
 484 do {                                                                 \
 485         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {             \
 486                 if (err)                                             \
 487                         CERROR("lop_" #op ": dev %d no operation\n", \
 488                                ctxt->loc_obd->obd_minor);            \
 489                 RETURN(err);                                         \
 490         }                                                            \
 491 } while (0)
 492
 493 static inline int class_devno_max(void)
 494 {
 495         return MAX_OBD_DEVICES;
 496 }
 497
 498 static inline int obd_get_info(const struct lu_env *env,
 499                                struct obd_export *exp, __u32 keylen,
 500                                void *key, __u32 *vallen, void *val,
 501                                struct lov_stripe_md *lsm)
 502 {
 503         int rc;
 504         ENTRY;
 505
 506         EXP_CHECK_DT_OP(exp, get_info);
 507         EXP_COUNTER_INCREMENT(exp, get_info);
 508
 509         rc = OBP(exp->exp_obd, get_info)(env, exp, keylen, key, vallen, val,
 510                                          lsm);
 511         RETURN(rc);
 512 }
 513
 514 static inline int obd_set_info_async(const struct lu_env *env,
 515                                      struct obd_export *exp, obd_count keylen,
 516                                      void *key, obd_count vallen, void *val,
 517                                      struct ptlrpc_request_set *set)
 518 {
 519         int rc;
 520         ENTRY;
 521
 522         EXP_CHECK_DT_OP(exp, set_info_async);
 523         EXP_COUNTER_INCREMENT(exp, set_info_async);
 524
 525         rc = OBP(exp->exp_obd, set_info_async)(env, exp, keylen, key, vallen,
 526                                                val, set);
 527         RETURN(rc);
 528 }
 529
 530 /*
 531  * obd-lu integration.
 532  *
 533  * Functionality is being moved into new lu_device-based layering, but some
 534  * pieces of configuration process are still based on obd devices.
 535  *
 536  * Specifically, lu_device_type_operations::ldto_device_alloc() methods fully
 537  * subsume ->o_setup() methods of obd devices they replace. The same for
 538  * lu_device_operations::ldo_process_config() and ->o_process_config(). As a
 539  * result, obd_setup() and obd_process_config() branch and call one XOR
 540  * another.
 541  *
 542  * Yet neither lu_device_type_operations::ldto_device_fini() nor
 543  * lu_device_type_operations::ldto_device_free() fully implement the
 544  * functionality of ->o_precleanup() and ->o_cleanup() they override. Hence,
 545  * obd_precleanup() and obd_cleanup() call both lu_device and obd operations.
 546  */
 547
 548 #define DECLARE_LU_VARS(ldt, d)                 \
 549         struct lu_device_type *ldt;       \
 550         struct lu_device *d
 551
 552 static inline int obd_setup(struct obd_device *obd, struct lustre_cfg *cfg)
 553 {
 554         int rc;
 555         DECLARE_LU_VARS(ldt, d);
 556         ENTRY;
 557
 558         ldt = obd->obd_type->typ_lu;
 559         if (ldt != NULL) {
 560                 struct lu_context  session_ctx;
 561                 struct lu_env env;
 562                 lu_context_init(&session_ctx, LCT_SESSION | LCT_SERVER_SESSION);
 563                 session_ctx.lc_thread = NULL;
 564                 lu_context_enter(&session_ctx);
 565
 566                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 567                 if (rc == 0) {
 568                         env.le_ses = &session_ctx;
 569                         d = ldt->ldt_ops->ldto_device_alloc(&env, ldt, cfg);
 570                         lu_env_fini(&env);
 571                         if (!IS_ERR(d)) {
 572                                 obd->obd_lu_dev = d;
 573                                 d->ld_obd = obd;
 574                                 rc = 0;
 575                         } else
 576                                 rc = PTR_ERR(d);
 577                 }
 578                 lu_context_exit(&session_ctx);
 579                 lu_context_fini(&session_ctx);
 580
 581         } else {
 582                 OBD_CHECK_DT_OP(obd, setup, -EOPNOTSUPP);
 583                 OBD_COUNTER_INCREMENT(obd, setup);
 584                 rc = OBP(obd, setup)(obd, cfg);
 585         }
 586         RETURN(rc);
 587 }
 588
 589 static inline int obd_precleanup(struct obd_device *obd,
 590                                  enum obd_cleanup_stage cleanup_stage)
 591 {
 592         int rc;
 593         DECLARE_LU_VARS(ldt, d);
 594         ENTRY;
 595
 596         OBD_CHECK_DEV(obd);
 597         ldt = obd->obd_type->typ_lu;
 598         d = obd->obd_lu_dev;
 599         if (ldt != NULL && d != NULL) {
 600                 if (cleanup_stage == OBD_CLEANUP_EXPORTS) {
 601                         struct lu_env env;
 602
 603                         rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 604                         if (rc == 0) {
 605                                 ldt->ldt_ops->ldto_device_fini(&env, d);
 606                                 lu_env_fini(&env);
 607                         }
 608                 }
 609         }
 610         OBD_CHECK_DT_OP(obd, precleanup, 0);
 611         OBD_COUNTER_INCREMENT(obd, precleanup);
 612
 613         rc = OBP(obd, precleanup)(obd, cleanup_stage);
 614         RETURN(rc);
 615 }
 616
 617 static inline int obd_cleanup(struct obd_device *obd)
 618 {
 619         int rc;
 620         DECLARE_LU_VARS(ldt, d);
 621         ENTRY;
 622
 623         OBD_CHECK_DEV(obd);
 624
 625         ldt = obd->obd_type->typ_lu;
 626         d = obd->obd_lu_dev;
 627         if (ldt != NULL && d != NULL) {
 628                 struct lu_env env;
 629
 630                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 631                 if (rc == 0) {
 632                         ldt->ldt_ops->ldto_device_free(&env, d);
 633                         lu_env_fini(&env);
 634                         obd->obd_lu_dev = NULL;
 635                 }
 636         }
 637         OBD_CHECK_DT_OP(obd, cleanup, 0);
 638         OBD_COUNTER_INCREMENT(obd, cleanup);
 639
 640         rc = OBP(obd, cleanup)(obd);
 641         RETURN(rc);
 642 }
 643
 644 static inline void obd_cleanup_client_import(struct obd_device *obd)
 645 {
 646         ENTRY;
 647
 648         /* If we set up but never connected, the
 649            client import will not have been cleaned. */
 650         down_write(&obd->u.cli.cl_sem);
 651         if (obd->u.cli.cl_import) {
 652                 struct obd_import *imp;
 653                 imp = obd->u.cli.cl_import;
 654                 CDEBUG(D_CONFIG, "%s: client import never connected\n",
 655                        obd->obd_name);
 656                 ptlrpc_invalidate_import(imp);
 657                 if (imp->imp_rq_pool) {
 658                         ptlrpc_free_rq_pool(imp->imp_rq_pool);
 659                         imp->imp_rq_pool = NULL;
 660                 }
 661                 client_destroy_import(imp);
 662                 obd->u.cli.cl_import = NULL;
 663         }
 664         up_write(&obd->u.cli.cl_sem);
 665
 666         EXIT;
 667 }
 668
 669 static inline int
 670 obd_process_config(struct obd_device *obd, int datalen, void *data)
 671 {
 672         int rc;
 673         DECLARE_LU_VARS(ldt, d);
 674         ENTRY;
 675
 676         OBD_CHECK_DEV(obd);
 677
 678         obd->obd_process_conf = 1;
 679         ldt = obd->obd_type->typ_lu;
 680         d = obd->obd_lu_dev;
 681         if (ldt != NULL && d != NULL) {
 682                 struct lu_env env;
 683
 684                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 685                 if (rc == 0) {
 686                         rc = d->ld_ops->ldo_process_config(&env, d, data);
 687                         lu_env_fini(&env);
 688                 }
 689         } else {
 690                 OBD_CHECK_DT_OP(obd, process_config, -EOPNOTSUPP);
 691                 rc = OBP(obd, process_config)(obd, datalen, data);
 692         }
 693         OBD_COUNTER_INCREMENT(obd, process_config);
 694         obd->obd_process_conf = 0;
 695
 696         RETURN(rc);
 697 }
 698
 699 /* Pack an in-memory MD struct for storage on disk.
 700  * Returns +ve size of packed MD (0 for free), or -ve error.
 701  *
 702  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 703  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 704  * If @*disk_tgt == NULL, it will be allocated
 705  */
 706 static inline int obd_packmd(struct obd_export *exp,
 707                              struct lov_mds_md **disk_tgt,
 708                              struct lov_stripe_md *mem_src)
 709 {
 710         int rc;
 711         ENTRY;
 712
 713         EXP_CHECK_DT_OP(exp, packmd);
 714         EXP_COUNTER_INCREMENT(exp, packmd);
 715
 716         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 717         RETURN(rc);
 718 }
 719
 720 static inline int obd_size_diskmd(struct obd_export *exp,
 721                                   struct lov_stripe_md *mem_src)
 722 {
 723         return obd_packmd(exp, NULL, mem_src);
 724 }
 725
 726 static inline int obd_free_diskmd(struct obd_export *exp,
 727                                   struct lov_mds_md **disk_tgt)
 728 {
 729         LASSERT(disk_tgt);
 730         LASSERT(*disk_tgt);
 731         /*
 732          * LU-2590, for caller's convenience, *disk_tgt could be host
 733          * endianness, it needs swab to LE if necessary, while just
 734          * lov_mds_md header needs it for figuring out how much memory
 735          * needs to be freed.
 736          */
 737         if ((cpu_to_le32(LOV_MAGIC) != LOV_MAGIC) &&
 738             (((*disk_tgt)->lmm_magic == LOV_MAGIC_V1) ||
 739              ((*disk_tgt)->lmm_magic == LOV_MAGIC_V3)))
 740                 lustre_swab_lov_mds_md(*disk_tgt);
 741         return obd_packmd(exp, disk_tgt, NULL);
 742 }
 743
 744 /* Unpack an MD struct from disk to in-memory format.
 745  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 746  *
 747  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 748  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 749  * If @*mem_tgt == NULL, it will be allocated
 750  */
 751 static inline int obd_unpackmd(struct obd_export *exp,
 752                                struct lov_stripe_md **mem_tgt,
 753                                struct lov_mds_md *disk_src,
 754                                int disk_len)
 755 {
 756         int rc;
 757         ENTRY;
 758
 759         EXP_CHECK_DT_OP(exp, unpackmd);
 760         EXP_COUNTER_INCREMENT(exp, unpackmd);
 761
 762         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 763         RETURN(rc);
 764 }
 765
 766 /* helper functions */
 767 static inline int obd_alloc_memmd(struct obd_export *exp,
 768                                   struct lov_stripe_md **mem_tgt)
 769 {
 770         LASSERT(mem_tgt);
 771         LASSERT(*mem_tgt == NULL);
 772         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 773 }
 774
 775 static inline int obd_free_memmd(struct obd_export *exp,
 776                                  struct lov_stripe_md **mem_tgt)
 777 {
 778         int rc;
 779
 780         LASSERT(mem_tgt);
 781         LASSERT(*mem_tgt);
 782         rc = obd_unpackmd(exp, mem_tgt, NULL, 0);
 783         *mem_tgt = NULL;
 784         return rc;
 785 }
 786
 787 static inline int obd_create(const struct lu_env *env, struct obd_export *exp,
 788                              struct obdo *obdo, struct lov_stripe_md **ea,
 789                              struct obd_trans_info *oti)
 790 {
 791         int rc;
 792         ENTRY;
 793
 794         EXP_CHECK_DT_OP(exp, create);
 795         EXP_COUNTER_INCREMENT(exp, create);
 796
 797         rc = OBP(exp->exp_obd, create)(env, exp, obdo, ea, oti);
 798         RETURN(rc);
 799 }
 800
 801 static inline int obd_destroy(const struct lu_env *env, struct obd_export *exp,
 802                               struct obdo *obdo, struct lov_stripe_md *ea,
 803                               struct obd_trans_info *oti,
 804                               struct obd_export *md_exp, void *capa)
 805 {
 806         int rc;
 807         ENTRY;
 808
 809         EXP_CHECK_DT_OP(exp, destroy);
 810         EXP_COUNTER_INCREMENT(exp, destroy);
 811
 812         rc = OBP(exp->exp_obd, destroy)(env, exp, obdo, ea, oti, md_exp, capa);
 813         RETURN(rc);
 814 }
 815
 816 static inline int obd_getattr(const struct lu_env *env, struct obd_export *exp,
 817                               struct obd_info *oinfo)
 818 {
 819         int rc;
 820         ENTRY;
 821
 822         EXP_CHECK_DT_OP(exp, getattr);
 823         EXP_COUNTER_INCREMENT(exp, getattr);
 824
 825         rc = OBP(exp->exp_obd, getattr)(env, exp, oinfo);
 826         RETURN(rc);
 827 }
 828
 829 static inline int obd_getattr_async(struct obd_export *exp,
 830                                     struct obd_info *oinfo,
 831                                     struct ptlrpc_request_set *set)
 832 {
 833         int rc;
 834         ENTRY;
 835
 836         EXP_CHECK_DT_OP(exp, getattr_async);
 837         EXP_COUNTER_INCREMENT(exp, getattr_async);
 838
 839         rc = OBP(exp->exp_obd, getattr_async)(exp, oinfo, set);
 840         RETURN(rc);
 841 }
 842
 843 static inline int obd_setattr(const struct lu_env *env, struct obd_export *exp,
 844                               struct obd_info *oinfo,
 845                               struct obd_trans_info *oti)
 846 {
 847         int rc;
 848         ENTRY;
 849
 850         EXP_CHECK_DT_OP(exp, setattr);
 851         EXP_COUNTER_INCREMENT(exp, setattr);
 852
 853         rc = OBP(exp->exp_obd, setattr)(env, exp, oinfo, oti);
 854         RETURN(rc);
 855 }
 856
 857 /* This performs all the requests set init/wait/destroy actions. */
 858 static inline int obd_setattr_rqset(struct obd_export *exp,
 859                                     struct obd_info *oinfo,
 860                                     struct obd_trans_info *oti)
 861 {
 862         struct ptlrpc_request_set *set = NULL;
 863         int rc;
 864         ENTRY;
 865
 866         EXP_CHECK_DT_OP(exp, setattr_async);
 867         EXP_COUNTER_INCREMENT(exp, setattr_async);
 868
 869         set =  ptlrpc_prep_set();
 870         if (set == NULL)
 871                 RETURN(-ENOMEM);
 872
 873         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 874         if (rc == 0)
 875                 rc = ptlrpc_set_wait(set);
 876         ptlrpc_set_destroy(set);
 877         RETURN(rc);
 878 }
 879
 880 /* This adds all the requests into @set if @set != NULL, otherwise
 881    all requests are sent asynchronously without waiting for response. */
 882 static inline int obd_setattr_async(struct obd_export *exp,
 883                                     struct obd_info *oinfo,
 884                                     struct obd_trans_info *oti,
 885                                     struct ptlrpc_request_set *set)
 886 {
 887         int rc;
 888         ENTRY;
 889
 890         EXP_CHECK_DT_OP(exp, setattr_async);
 891         EXP_COUNTER_INCREMENT(exp, setattr_async);
 892
 893         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 894         RETURN(rc);
 895 }
 896
 897 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 898                                int priority)
 899 {
 900         struct obd_device *obd = imp->imp_obd;
 901         int rc;
 902         ENTRY;
 903
 904         OBD_CHECK_DEV_ACTIVE(obd);
 905         OBD_CHECK_DT_OP(obd, add_conn, -EOPNOTSUPP);
 906         OBD_COUNTER_INCREMENT(obd, add_conn);
 907
 908         rc = OBP(obd, add_conn)(imp, uuid, priority);
 909         RETURN(rc);
 910 }
 911
 912 static inline int obd_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
 913 {
 914         struct obd_device *obd = imp->imp_obd;
 915         int rc;
 916         ENTRY;
 917
 918         OBD_CHECK_DEV_ACTIVE(obd);
 919         OBD_CHECK_DT_OP(obd, del_conn, -EOPNOTSUPP);
 920         OBD_COUNTER_INCREMENT(obd, del_conn);
 921
 922         rc = OBP(obd, del_conn)(imp, uuid);
 923         RETURN(rc);
 924 }
 925
 926 static inline struct obd_uuid *obd_get_uuid(struct obd_export *exp)
 927 {
 928         struct obd_uuid *uuid;
 929         ENTRY;
 930
 931         OBD_CHECK_DT_OP(exp->exp_obd, get_uuid, NULL);
 932         EXP_COUNTER_INCREMENT(exp, get_uuid);
 933
 934         uuid = OBP(exp->exp_obd, get_uuid)(exp);
 935         RETURN(uuid);
 936 }
 937
 938 /** Create a new /a exp on device /a obd for the uuid /a cluuid
 939  * @param exp New export handle
 940  * @param d Connect data, supported flags are set, flags also understood
 941  *    by obd are returned.
 942  */
 943 static inline int obd_connect(const struct lu_env *env,
 944                               struct obd_export **exp,struct obd_device *obd,
 945                               struct obd_uuid *cluuid,
 946                               struct obd_connect_data *data,
 947                               void *localdata)
 948 {
 949         int rc;
 950         __u64 ocf = data ? data->ocd_connect_flags : 0; /* for post-condition
 951                                                    * check */
 952         ENTRY;
 953
 954         OBD_CHECK_DEV_ACTIVE(obd);
 955         OBD_CHECK_DT_OP(obd, connect, -EOPNOTSUPP);
 956         OBD_COUNTER_INCREMENT(obd, connect);
 957
 958         rc = OBP(obd, connect)(env, exp, obd, cluuid, data, localdata);
 959         /* check that only subset is granted */
 960         LASSERT(ergo(data != NULL, (data->ocd_connect_flags & ocf) ==
 961                                     data->ocd_connect_flags));
 962         RETURN(rc);
 963 }
 964
 965 static inline int obd_reconnect(const struct lu_env *env,
 966                                 struct obd_export *exp,
 967                                 struct obd_device *obd,
 968                                 struct obd_uuid *cluuid,
 969                                 struct obd_connect_data *d,
 970                                 void *localdata)
 971 {
 972         int rc;
 973         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 974                                                    * check */
 975
 976         ENTRY;
 977
 978         OBD_CHECK_DEV_ACTIVE(obd);
 979         OBD_CHECK_DT_OP(obd, reconnect, 0);
 980         OBD_COUNTER_INCREMENT(obd, reconnect);
 981
 982         rc = OBP(obd, reconnect)(env, exp, obd, cluuid, d, localdata);
 983         /* check that only subset is granted */
 984         LASSERT(ergo(d != NULL,
 985                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 986         RETURN(rc);
 987 }
 988
 989 static inline int obd_disconnect(struct obd_export *exp)
 990 {
 991         int rc;
 992         ENTRY;
 993
 994         EXP_CHECK_DT_OP(exp, disconnect);
 995         EXP_COUNTER_INCREMENT(exp, disconnect);
 996
 997         rc = OBP(exp->exp_obd, disconnect)(exp);
 998         RETURN(rc);
 999 }
1000
1001 static inline int obd_fid_init(struct obd_device *obd, struct obd_export *exp,
1002                                enum lu_cli_type type)
1003 {
1004         int rc;
1005         ENTRY;
1006
1007         OBD_CHECK_DT_OP(obd, fid_init, 0);
1008         OBD_COUNTER_INCREMENT(obd, fid_init);
1009
1010         rc = OBP(obd, fid_init)(obd, exp, type);
1011         RETURN(rc);
1012 }
1013
1014 static inline int obd_fid_fini(struct obd_device *obd)
1015 {
1016         int rc;
1017         ENTRY;
1018
1019         OBD_CHECK_DT_OP(obd, fid_fini, 0);
1020         OBD_COUNTER_INCREMENT(obd, fid_fini);
1021
1022         rc = OBP(obd, fid_fini)(obd);
1023         RETURN(rc);
1024 }
1025
1026 static inline int obd_fid_alloc(const struct lu_env *env,
1027                                 struct obd_export *exp,
1028                                 struct lu_fid *fid,
1029                                 struct md_op_data *op_data)
1030 {
1031         int rc;
1032         ENTRY;
1033
1034         EXP_CHECK_DT_OP(exp, fid_alloc);
1035         EXP_COUNTER_INCREMENT(exp, fid_alloc);
1036
1037         rc = OBP(exp->exp_obd, fid_alloc)(env, exp, fid, op_data);
1038         RETURN(rc);
1039 }
1040
1041 static inline int obd_ping(const struct lu_env *env, struct obd_export *exp)
1042 {
1043         int rc;
1044         ENTRY;
1045
1046         OBD_CHECK_DT_OP(exp->exp_obd, ping, 0);
1047         EXP_COUNTER_INCREMENT(exp, ping);
1048
1049         rc = OBP(exp->exp_obd, ping)(env, exp);
1050         RETURN(rc);
1051 }
1052
1053 static inline int obd_pool_new(struct obd_device *obd, char *poolname)
1054 {
1055         int rc;
1056         ENTRY;
1057
1058         OBD_CHECK_DT_OP(obd, pool_new, -EOPNOTSUPP);
1059         OBD_COUNTER_INCREMENT(obd, pool_new);
1060
1061         rc = OBP(obd, pool_new)(obd, poolname);
1062         RETURN(rc);
1063 }
1064
1065 static inline int obd_pool_del(struct obd_device *obd, char *poolname)
1066 {
1067         int rc;
1068         ENTRY;
1069
1070         OBD_CHECK_DT_OP(obd, pool_del, -EOPNOTSUPP);
1071         OBD_COUNTER_INCREMENT(obd, pool_del);
1072
1073         rc = OBP(obd, pool_del)(obd, poolname);
1074         RETURN(rc);
1075 }
1076
1077 static inline int obd_pool_add(struct obd_device *obd, char *poolname, char *ostname)
1078 {
1079         int rc;
1080         ENTRY;
1081
1082         OBD_CHECK_DT_OP(obd, pool_add, -EOPNOTSUPP);
1083         OBD_COUNTER_INCREMENT(obd, pool_add);
1084
1085         rc = OBP(obd, pool_add)(obd, poolname, ostname);
1086         RETURN(rc);
1087 }
1088
1089 static inline int obd_pool_rem(struct obd_device *obd, char *poolname, char *ostname)
1090 {
1091         int rc;
1092         ENTRY;
1093
1094         OBD_CHECK_DT_OP(obd, pool_rem, -EOPNOTSUPP);
1095         OBD_COUNTER_INCREMENT(obd, pool_rem);
1096
1097         rc = OBP(obd, pool_rem)(obd, poolname, ostname);
1098         RETURN(rc);
1099 }
1100
1101 static inline void obd_getref(struct obd_device *obd)
1102 {
1103         ENTRY;
1104         if (OBT(obd) && OBP(obd, getref)) {
1105                 OBD_COUNTER_INCREMENT(obd, getref);
1106                 OBP(obd, getref)(obd);
1107         }
1108         EXIT;
1109 }
1110
1111 static inline void obd_putref(struct obd_device *obd)
1112 {
1113         ENTRY;
1114         if (OBT(obd) && OBP(obd, putref)) {
1115                 OBD_COUNTER_INCREMENT(obd, putref);
1116                 OBP(obd, putref)(obd);
1117         }
1118         EXIT;
1119 }
1120
1121 static inline int obd_init_export(struct obd_export *exp)
1122 {
1123         int rc = 0;
1124
1125         ENTRY;
1126         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
1127             OBP((exp)->exp_obd, init_export))
1128                 rc = OBP(exp->exp_obd, init_export)(exp);
1129         RETURN(rc);
1130 }
1131
1132 static inline int obd_destroy_export(struct obd_export *exp)
1133 {
1134         ENTRY;
1135         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
1136             OBP((exp)->exp_obd, destroy_export))
1137                 OBP(exp->exp_obd, destroy_export)(exp);
1138         RETURN(0);
1139 }
1140
1141 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1142  * If the cache is older than @max_age we will get a new value from the
1143  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1144 static inline int obd_statfs_async(struct obd_export *exp,
1145                                    struct obd_info *oinfo,
1146                                    __u64 max_age,
1147                                    struct ptlrpc_request_set *rqset)
1148 {
1149         int rc = 0;
1150         struct obd_device *obd;
1151         ENTRY;
1152
1153         if (exp == NULL || exp->exp_obd == NULL)
1154                 RETURN(-EINVAL);
1155
1156         obd = exp->exp_obd;
1157         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1158         OBD_COUNTER_INCREMENT(obd, statfs);
1159
1160         CDEBUG(D_SUPER, "%s: osfs %p age "LPU64", max_age "LPU64"\n",
1161                obd->obd_name, &obd->obd_osfs, obd->obd_osfs_age, max_age);
1162         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1163                 rc = OBP(obd, statfs_async)(exp, oinfo, max_age, rqset);
1164         } else {
1165                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
1166                        " objects "LPU64"/"LPU64"\n",
1167                        obd->obd_name, &obd->obd_osfs,
1168                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1169                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1170                 spin_lock(&obd->obd_osfs_lock);
1171                 memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
1172                 spin_unlock(&obd->obd_osfs_lock);
1173                 oinfo->oi_flags |= OBD_STATFS_FROM_CACHE;
1174                 if (oinfo->oi_cb_up)
1175                         oinfo->oi_cb_up(oinfo, 0);
1176         }
1177         RETURN(rc);
1178 }
1179
1180 static inline int obd_statfs_rqset(struct obd_export *exp,
1181                                    struct obd_statfs *osfs, __u64 max_age,
1182                                    __u32 flags)
1183 {
1184         struct ptlrpc_request_set *set = NULL;
1185         struct obd_info oinfo = { { { 0 } } };
1186         int rc = 0;
1187         ENTRY;
1188
1189         set =  ptlrpc_prep_set();
1190         if (set == NULL)
1191                 RETURN(-ENOMEM);
1192
1193         oinfo.oi_osfs = osfs;
1194         oinfo.oi_flags = flags;
1195         rc = obd_statfs_async(exp, &oinfo, max_age, set);
1196         if (rc == 0)
1197                 rc = ptlrpc_set_wait(set);
1198         ptlrpc_set_destroy(set);
1199         RETURN(rc);
1200 }
1201
1202 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1203  * If the cache is older than @max_age we will get a new value from the
1204  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1205 static inline int obd_statfs(const struct lu_env *env, struct obd_export *exp,
1206                              struct obd_statfs *osfs, __u64 max_age,
1207                              __u32 flags)
1208 {
1209         int rc = 0;
1210         struct obd_device *obd = exp->exp_obd;
1211         ENTRY;
1212
1213         if (obd == NULL)
1214                 RETURN(-EINVAL);
1215
1216         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1217         OBD_COUNTER_INCREMENT(obd, statfs);
1218
1219         CDEBUG(D_SUPER, "osfs "LPU64", max_age "LPU64"\n",
1220                obd->obd_osfs_age, max_age);
1221         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1222                 rc = OBP(obd, statfs)(env, exp, osfs, max_age, flags);
1223                 if (rc == 0) {
1224                         spin_lock(&obd->obd_osfs_lock);
1225                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
1226                         obd->obd_osfs_age = cfs_time_current_64();
1227                         spin_unlock(&obd->obd_osfs_lock);
1228                 }
1229         } else {
1230                 CDEBUG(D_SUPER, "%s: use %p cache blocks "LPU64"/"LPU64
1231                        " objects "LPU64"/"LPU64"\n",
1232                        obd->obd_name, &obd->obd_osfs,
1233                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1234                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1235                 spin_lock(&obd->obd_osfs_lock);
1236                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
1237                 spin_unlock(&obd->obd_osfs_lock);
1238         }
1239         RETURN(rc);
1240 }
1241
1242 static inline int obd_preprw(const struct lu_env *env, int cmd,
1243                              struct obd_export *exp, struct obdo *oa,
1244                              int objcount, struct obd_ioobj *obj,
1245                              struct niobuf_remote *remote, int *pages,
1246                              struct niobuf_local *local,
1247                              struct obd_trans_info *oti,
1248                              struct lustre_capa *capa)
1249 {
1250         int rc;
1251         ENTRY;
1252
1253         EXP_CHECK_DT_OP(exp, preprw);
1254         EXP_COUNTER_INCREMENT(exp, preprw);
1255
1256         rc = OBP(exp->exp_obd, preprw)(env, cmd, exp, oa, objcount, obj, remote,
1257                                        pages, local, oti, capa);
1258         RETURN(rc);
1259 }
1260
1261 static inline int obd_commitrw(const struct lu_env *env, int cmd,
1262                                struct obd_export *exp, struct obdo *oa,
1263                                int objcount, struct obd_ioobj *obj,
1264                                struct niobuf_remote *rnb, int pages,
1265                                struct niobuf_local *local,
1266                                struct obd_trans_info *oti, int rc)
1267 {
1268         ENTRY;
1269
1270         EXP_CHECK_DT_OP(exp, commitrw);
1271         EXP_COUNTER_INCREMENT(exp, commitrw);
1272
1273         rc = OBP(exp->exp_obd, commitrw)(env, cmd, exp, oa, objcount, obj,
1274                                          rnb, pages, local, oti, rc);
1275         RETURN(rc);
1276 }
1277
1278 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1279                                 int len, void *karg, void *uarg)
1280 {
1281         int rc;
1282         ENTRY;
1283
1284         EXP_CHECK_DT_OP(exp, iocontrol);
1285         EXP_COUNTER_INCREMENT(exp, iocontrol);
1286
1287         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1288         RETURN(rc);
1289 }
1290
1291 static inline int obd_change_cbdata(struct obd_export *exp,
1292                                     struct lov_stripe_md *lsm,
1293                                     ldlm_iterator_t it, void *data)
1294 {
1295         int rc;
1296         ENTRY;
1297
1298         EXP_CHECK_DT_OP(exp, change_cbdata);
1299         EXP_COUNTER_INCREMENT(exp, change_cbdata);
1300
1301         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1302         RETURN(rc);
1303 }
1304
1305 static inline int obd_find_cbdata(struct obd_export *exp,
1306                                   struct lov_stripe_md *lsm,
1307                                   ldlm_iterator_t it, void *data)
1308 {
1309         int rc;
1310         ENTRY;
1311
1312         EXP_CHECK_DT_OP(exp, find_cbdata);
1313         EXP_COUNTER_INCREMENT(exp, find_cbdata);
1314
1315         rc = OBP(exp->exp_obd, find_cbdata)(exp, lsm, it, data);
1316         RETURN(rc);
1317 }
1318
1319 static inline void obd_import_event(struct obd_device *obd,
1320                                     struct obd_import *imp,
1321                                     enum obd_import_event event)
1322 {
1323         ENTRY;
1324         if (!obd) {
1325                 CERROR("NULL device\n");
1326                 EXIT;
1327                 return;
1328         }
1329         if (obd->obd_set_up && OBP(obd, import_event)) {
1330                 OBD_COUNTER_INCREMENT(obd, import_event);
1331                 OBP(obd, import_event)(obd, imp, event);
1332         }
1333         EXIT;
1334 }
1335
1336 static inline int obd_notify(struct obd_device *obd,
1337                              struct obd_device *watched,
1338                              enum obd_notify_event ev,
1339                              void *data)
1340 {
1341         int rc;
1342         ENTRY;
1343         OBD_CHECK_DEV(obd);
1344
1345         if (!obd->obd_set_up) {
1346                 CDEBUG(D_HA, "obd %s not set up\n", obd->obd_name);
1347                 RETURN(-EINVAL);
1348         }
1349
1350         if (!OBP(obd, notify)) {
1351                 CDEBUG(D_HA, "obd %s has no notify handler\n", obd->obd_name);
1352                 RETURN(-ENOSYS);
1353         }
1354
1355         OBD_COUNTER_INCREMENT(obd, notify);
1356         rc = OBP(obd, notify)(obd, watched, ev, data);
1357         RETURN(rc);
1358 }
1359
1360 static inline int obd_notify_observer(struct obd_device *observer,
1361                                       struct obd_device *observed,
1362                                       enum obd_notify_event ev,
1363                                       void *data)
1364 {
1365         int rc1;
1366         int rc2;
1367
1368         struct obd_notify_upcall *onu;
1369
1370         if (observer->obd_observer)
1371                 rc1 = obd_notify(observer->obd_observer, observed, ev, data);
1372         else
1373                 rc1 = 0;
1374         /*
1375          * Also, call non-obd listener, if any
1376          */
1377         onu = &observer->obd_upcall;
1378         if (onu->onu_upcall != NULL)
1379                 rc2 = onu->onu_upcall(observer, observed, ev,
1380                                       onu->onu_owner, NULL);
1381         else
1382                 rc2 = 0;
1383
1384         return rc1 ? rc1 : rc2;
1385 }
1386
1387 static inline int obd_quotacheck(struct obd_export *exp,
1388                                  struct obd_quotactl *oqctl)
1389 {
1390         int rc;
1391         ENTRY;
1392
1393         EXP_CHECK_DT_OP(exp, quotacheck);
1394         EXP_COUNTER_INCREMENT(exp, quotacheck);
1395
1396         rc = OBP(exp->exp_obd, quotacheck)(exp->exp_obd, exp, oqctl);
1397         RETURN(rc);
1398 }
1399
1400 static inline int obd_quotactl(struct obd_export *exp,
1401                                struct obd_quotactl *oqctl)
1402 {
1403         int rc;
1404         ENTRY;
1405
1406         EXP_CHECK_DT_OP(exp, quotactl);
1407         EXP_COUNTER_INCREMENT(exp, quotactl);
1408
1409         rc = OBP(exp->exp_obd, quotactl)(exp->exp_obd, exp, oqctl);
1410         RETURN(rc);
1411 }
1412
1413 static inline int obd_health_check(const struct lu_env *env,
1414                                    struct obd_device *obd)
1415 {
1416         /* returns: 0 on healthy
1417          *         >0 on unhealthy + reason code/flag
1418          *            however the only suppored reason == 1 right now
1419          *            We'll need to define some better reasons
1420          *            or flags in the future.
1421          *         <0 on error
1422          */
1423         int rc;
1424         ENTRY;
1425
1426         /* don't use EXP_CHECK_DT_OP, because NULL method is normal here */
1427         if (obd == NULL || !OBT(obd)) {
1428                 CERROR("cleaned up obd\n");
1429                 RETURN(-EOPNOTSUPP);
1430         }
1431         if (!obd->obd_set_up || obd->obd_stopping)
1432                 RETURN(0);
1433         if (!OBP(obd, health_check))
1434                 RETURN(0);
1435
1436         rc = OBP(obd, health_check)(env, obd);
1437         RETURN(rc);
1438 }
1439
1440 static inline int obd_register_observer(struct obd_device *obd,
1441                                         struct obd_device *observer)
1442 {
1443         ENTRY;
1444         OBD_CHECK_DEV(obd);
1445         down_write(&obd->obd_observer_link_sem);
1446         if (obd->obd_observer && observer) {
1447                 up_write(&obd->obd_observer_link_sem);
1448                 RETURN(-EALREADY);
1449         }
1450         obd->obd_observer = observer;
1451         up_write(&obd->obd_observer_link_sem);
1452         RETURN(0);
1453 }
1454
1455 /* metadata helpers */
1456 static inline int md_getstatus(struct obd_export *exp,
1457                                struct lu_fid *fid, struct obd_capa **pc)
1458 {
1459         int rc;
1460         ENTRY;
1461
1462         EXP_CHECK_MD_OP(exp, getstatus);
1463         EXP_MD_COUNTER_INCREMENT(exp, getstatus);
1464         rc = MDP(exp->exp_obd, getstatus)(exp, fid, pc);
1465         RETURN(rc);
1466 }
1467
1468 static inline int md_getattr(struct obd_export *exp, struct md_op_data *op_data,
1469                              struct ptlrpc_request **request)
1470 {
1471         int rc;
1472         ENTRY;
1473         EXP_CHECK_MD_OP(exp, getattr);
1474         EXP_MD_COUNTER_INCREMENT(exp, getattr);
1475         rc = MDP(exp->exp_obd, getattr)(exp, op_data, request);
1476         RETURN(rc);
1477 }
1478
1479 static inline int md_null_inode(struct obd_export *exp,
1480                                    const struct lu_fid *fid)
1481 {
1482         int rc;
1483         ENTRY;
1484         EXP_CHECK_MD_OP(exp, null_inode);
1485         EXP_MD_COUNTER_INCREMENT(exp, null_inode);
1486         rc = MDP(exp->exp_obd, null_inode)(exp, fid);
1487         RETURN(rc);
1488 }
1489
1490 static inline int md_find_cbdata(struct obd_export *exp,
1491                                  const struct lu_fid *fid,
1492                                  ldlm_iterator_t it, void *data)
1493 {
1494         int rc;
1495         ENTRY;
1496         EXP_CHECK_MD_OP(exp, find_cbdata);
1497         EXP_MD_COUNTER_INCREMENT(exp, find_cbdata);
1498         rc = MDP(exp->exp_obd, find_cbdata)(exp, fid, it, data);
1499         RETURN(rc);
1500 }
1501
1502 static inline int md_close(struct obd_export *exp, struct md_op_data *op_data,
1503                            struct md_open_data *mod,
1504                            struct ptlrpc_request **request)
1505 {
1506         int rc;
1507         ENTRY;
1508         EXP_CHECK_MD_OP(exp, close);
1509         EXP_MD_COUNTER_INCREMENT(exp, close);
1510         rc = MDP(exp->exp_obd, close)(exp, op_data, mod, request);
1511         RETURN(rc);
1512 }
1513
1514 static inline int md_create(struct obd_export *exp, struct md_op_data *op_data,
1515                             const void *data, int datalen, int mode, __u32 uid,
1516                             __u32 gid, cfs_cap_t cap_effective, __u64 rdev,
1517                             struct ptlrpc_request **request)
1518 {
1519         int rc;
1520         ENTRY;
1521         EXP_CHECK_MD_OP(exp, create);
1522         EXP_MD_COUNTER_INCREMENT(exp, create);
1523         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1524                                        uid, gid, cap_effective, rdev, request);
1525         RETURN(rc);
1526 }
1527
1528 static inline int md_done_writing(struct obd_export *exp,
1529                                   struct md_op_data *op_data,
1530                                   struct md_open_data *mod)
1531 {
1532         int rc;
1533         ENTRY;
1534         EXP_CHECK_MD_OP(exp, done_writing);
1535         EXP_MD_COUNTER_INCREMENT(exp, done_writing);
1536         rc = MDP(exp->exp_obd, done_writing)(exp, op_data, mod);
1537         RETURN(rc);
1538 }
1539
1540 static inline int md_enqueue(struct obd_export *exp,
1541                              struct ldlm_enqueue_info *einfo,
1542                              const union ldlm_policy_data *policy,
1543                              struct lookup_intent *it,
1544                              struct md_op_data *op_data,
1545                              struct lustre_handle *lockh,
1546                              __u64 extra_lock_flags)
1547 {
1548         int rc;
1549         ENTRY;
1550         EXP_CHECK_MD_OP(exp, enqueue);
1551         EXP_MD_COUNTER_INCREMENT(exp, enqueue);
1552         rc = MDP(exp->exp_obd, enqueue)(exp, einfo, policy, it, op_data, lockh,
1553                                         extra_lock_flags);
1554         RETURN(rc);
1555 }
1556
1557 static inline int md_getattr_name(struct obd_export *exp,
1558                                   struct md_op_data *op_data,
1559                                   struct ptlrpc_request **request)
1560 {
1561         int rc;
1562         ENTRY;
1563         EXP_CHECK_MD_OP(exp, getattr_name);
1564         EXP_MD_COUNTER_INCREMENT(exp, getattr_name);
1565         rc = MDP(exp->exp_obd, getattr_name)(exp, op_data, request);
1566         RETURN(rc);
1567 }
1568
1569 static inline int md_intent_lock(struct obd_export *exp,
1570                                  struct md_op_data *op_data,
1571                                  struct lookup_intent *it,
1572                                  struct ptlrpc_request **reqp,
1573                                  ldlm_blocking_callback cb_blocking,
1574                                  __u64 extra_lock_flags)
1575 {
1576         int rc;
1577         ENTRY;
1578         EXP_CHECK_MD_OP(exp, intent_lock);
1579         EXP_MD_COUNTER_INCREMENT(exp, intent_lock);
1580         rc = MDP(exp->exp_obd, intent_lock)(exp, op_data, it, reqp, cb_blocking,
1581                                             extra_lock_flags);
1582         RETURN(rc);
1583 }
1584
1585 static inline int md_link(struct obd_export *exp, struct md_op_data *op_data,
1586                           struct ptlrpc_request **request)
1587 {
1588         int rc;
1589         ENTRY;
1590         EXP_CHECK_MD_OP(exp, link);
1591         EXP_MD_COUNTER_INCREMENT(exp, link);
1592         rc = MDP(exp->exp_obd, link)(exp, op_data, request);
1593         RETURN(rc);
1594 }
1595
1596 static inline int md_rename(struct obd_export *exp, struct md_op_data *op_data,
1597                             const char *old, int oldlen, const char *new,
1598                             int newlen, struct ptlrpc_request **request)
1599 {
1600         int rc;
1601         ENTRY;
1602         EXP_CHECK_MD_OP(exp, rename);
1603         EXP_MD_COUNTER_INCREMENT(exp, rename);
1604         rc = MDP(exp->exp_obd, rename)(exp, op_data, old, oldlen, new,
1605                                        newlen, request);
1606         RETURN(rc);
1607 }
1608
1609 static inline int md_setattr(struct obd_export *exp, struct md_op_data *op_data,
1610                              void *ea, int ealen, void *ea2, int ea2len,
1611                              struct ptlrpc_request **request,
1612                              struct md_open_data **mod)
1613 {
1614         int rc;
1615         ENTRY;
1616         EXP_CHECK_MD_OP(exp, setattr);
1617         EXP_MD_COUNTER_INCREMENT(exp, setattr);
1618         rc = MDP(exp->exp_obd, setattr)(exp, op_data, ea, ealen,
1619                                         ea2, ea2len, request, mod);
1620         RETURN(rc);
1621 }
1622
1623 static inline int md_fsync(struct obd_export *exp, const struct lu_fid *fid,
1624                            struct obd_capa *oc, struct ptlrpc_request **request)
1625 {
1626         int rc;
1627         ENTRY;
1628         EXP_CHECK_MD_OP(exp, fsync);
1629         EXP_MD_COUNTER_INCREMENT(exp, fsync);
1630         rc = MDP(exp->exp_obd, fsync)(exp, fid, oc, request);
1631         RETURN(rc);
1632 }
1633
1634 static inline int md_read_page(struct obd_export *exp,
1635                                struct md_op_data *op_data,
1636                                struct md_callback *cb_op,
1637                                __u64  hash_offset,
1638                                struct page **ppage)
1639 {
1640         int rc;
1641         ENTRY;
1642         EXP_CHECK_MD_OP(exp, read_page);
1643         EXP_MD_COUNTER_INCREMENT(exp, read_page);
1644         rc = MDP(exp->exp_obd, read_page)(exp, op_data, cb_op, hash_offset,
1645                                           ppage);
1646         RETURN(rc);
1647 }
1648
1649 static inline int md_unlink(struct obd_export *exp, struct md_op_data *op_data,
1650                             struct ptlrpc_request **request)
1651 {
1652         int rc;
1653         ENTRY;
1654         EXP_CHECK_MD_OP(exp, unlink);
1655         EXP_MD_COUNTER_INCREMENT(exp, unlink);
1656         rc = MDP(exp->exp_obd, unlink)(exp, op_data, request);
1657         RETURN(rc);
1658 }
1659
1660 static inline int md_get_lustre_md(struct obd_export *exp,
1661                                    struct ptlrpc_request *req,
1662                                    struct obd_export *dt_exp,
1663                                    struct obd_export *md_exp,
1664                                    struct lustre_md *md)
1665 {
1666         ENTRY;
1667         EXP_CHECK_MD_OP(exp, get_lustre_md);
1668         EXP_MD_COUNTER_INCREMENT(exp, get_lustre_md);
1669         RETURN(MDP(exp->exp_obd, get_lustre_md)(exp, req, dt_exp, md_exp, md));
1670 }
1671
1672 static inline int md_free_lustre_md(struct obd_export *exp,
1673                                     struct lustre_md *md)
1674 {
1675         ENTRY;
1676         EXP_CHECK_MD_OP(exp, free_lustre_md);
1677         EXP_MD_COUNTER_INCREMENT(exp, free_lustre_md);
1678         RETURN(MDP(exp->exp_obd, free_lustre_md)(exp, md));
1679 }
1680
1681 static inline int md_update_lsm_md(struct obd_export *exp,
1682                                    struct lmv_stripe_md *lsm,
1683                                    struct mdt_body *body,
1684                                    ldlm_blocking_callback cb)
1685 {
1686         ENTRY;
1687         EXP_CHECK_MD_OP(exp, update_lsm_md);
1688         EXP_MD_COUNTER_INCREMENT(exp, update_lsm_md);
1689         RETURN(MDP(exp->exp_obd, update_lsm_md)(exp, lsm, body, cb));
1690 }
1691
1692 static inline int md_merge_attr(struct obd_export *exp,
1693                                 const struct lmv_stripe_md *lsm,
1694                                 struct cl_attr *attr)
1695 {
1696         ENTRY;
1697         EXP_CHECK_MD_OP(exp, merge_attr);
1698         EXP_MD_COUNTER_INCREMENT(exp, merge_attr);
1699         RETURN(MDP(exp->exp_obd, merge_attr)(exp, lsm, attr));
1700 }
1701
1702 static inline int md_setxattr(struct obd_export *exp,
1703                               const struct lu_fid *fid, struct obd_capa *oc,
1704                               obd_valid valid, const char *name,
1705                               const char *input, int input_size,
1706                               int output_size, int flags, __u32 suppgid,
1707                               struct ptlrpc_request **request)
1708 {
1709         ENTRY;
1710         EXP_CHECK_MD_OP(exp, setxattr);
1711         EXP_MD_COUNTER_INCREMENT(exp, setxattr);
1712         RETURN(MDP(exp->exp_obd, setxattr)(exp, fid, oc, valid, name, input,
1713                                            input_size, output_size, flags,
1714                                            suppgid, request));
1715 }
1716
1717 static inline int md_getxattr(struct obd_export *exp,
1718                               const struct lu_fid *fid, struct obd_capa *oc,
1719                               obd_valid valid, const char *name,
1720                               const char *input, int input_size,
1721                               int output_size, int flags,
1722                               struct ptlrpc_request **request)
1723 {
1724         ENTRY;
1725         EXP_CHECK_MD_OP(exp, getxattr);
1726         EXP_MD_COUNTER_INCREMENT(exp, getxattr);
1727         RETURN(MDP(exp->exp_obd, getxattr)(exp, fid, oc, valid, name, input,
1728                                            input_size, output_size, flags,
1729                                            request));
1730 }
1731
1732 static inline int md_set_open_replay_data(struct obd_export *exp,
1733                                           struct obd_client_handle *och,
1734                                           struct lookup_intent *it)
1735 {
1736         ENTRY;
1737         EXP_CHECK_MD_OP(exp, set_open_replay_data);
1738         EXP_MD_COUNTER_INCREMENT(exp, set_open_replay_data);
1739         RETURN(MDP(exp->exp_obd, set_open_replay_data)(exp, och, it));
1740 }
1741
1742 static inline int md_clear_open_replay_data(struct obd_export *exp,
1743                                             struct obd_client_handle *och)
1744 {
1745         ENTRY;
1746         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
1747         EXP_MD_COUNTER_INCREMENT(exp, clear_open_replay_data);
1748         RETURN(MDP(exp->exp_obd, clear_open_replay_data)(exp, och));
1749 }
1750
1751 static inline int md_set_lock_data(struct obd_export *exp,
1752                                    __u64 *lockh, void *data, __u64 *bits)
1753 {
1754         ENTRY;
1755         EXP_CHECK_MD_OP(exp, set_lock_data);
1756         EXP_MD_COUNTER_INCREMENT(exp, set_lock_data);
1757         RETURN(MDP(exp->exp_obd, set_lock_data)(exp, lockh, data, bits));
1758 }
1759
1760 static inline int md_cancel_unused(struct obd_export *exp,
1761                                    const struct lu_fid *fid,
1762                                    ldlm_policy_data_t *policy,
1763                                    ldlm_mode_t mode,
1764                                    ldlm_cancel_flags_t flags,
1765                                    void *opaque)
1766 {
1767         int rc;
1768         ENTRY;
1769
1770         EXP_CHECK_MD_OP(exp, cancel_unused);
1771         EXP_MD_COUNTER_INCREMENT(exp, cancel_unused);
1772
1773         rc = MDP(exp->exp_obd, cancel_unused)(exp, fid, policy, mode,
1774                                               flags, opaque);
1775         RETURN(rc);
1776 }
1777
1778 static inline ldlm_mode_t md_lock_match(struct obd_export *exp, __u64 flags,
1779                                         const struct lu_fid *fid,
1780                                         ldlm_type_t type,
1781                                         ldlm_policy_data_t *policy,
1782                                         ldlm_mode_t mode,
1783                                         struct lustre_handle *lockh)
1784 {
1785         ENTRY;
1786         EXP_CHECK_MD_OP(exp, lock_match);
1787         EXP_MD_COUNTER_INCREMENT(exp, lock_match);
1788         RETURN(MDP(exp->exp_obd, lock_match)(exp, flags, fid, type,
1789                                              policy, mode, lockh));
1790 }
1791
1792 static inline int md_init_ea_size(struct obd_export *exp, int easize,
1793                                   int def_asize, int cookiesize,
1794                                   int def_cookiesize)
1795 {
1796         ENTRY;
1797         EXP_CHECK_MD_OP(exp, init_ea_size);
1798         EXP_MD_COUNTER_INCREMENT(exp, init_ea_size);
1799         RETURN(MDP(exp->exp_obd, init_ea_size)(exp, easize, def_asize,
1800                                                cookiesize, def_cookiesize));
1801 }
1802
1803 static inline int md_get_remote_perm(struct obd_export *exp,
1804                                      const struct lu_fid *fid,
1805                                      struct obd_capa *oc, __u32 suppgid,
1806                                      struct ptlrpc_request **request)
1807 {
1808         ENTRY;
1809         EXP_CHECK_MD_OP(exp, get_remote_perm);
1810         EXP_MD_COUNTER_INCREMENT(exp, get_remote_perm);
1811         RETURN(MDP(exp->exp_obd, get_remote_perm)(exp, fid, oc, suppgid,
1812                                                   request));
1813 }
1814
1815 static inline int md_renew_capa(struct obd_export *exp, struct obd_capa *ocapa,
1816                                 renew_capa_cb_t cb)
1817 {
1818         int rc;
1819         ENTRY;
1820         EXP_CHECK_MD_OP(exp, renew_capa);
1821         EXP_MD_COUNTER_INCREMENT(exp, renew_capa);
1822         rc = MDP(exp->exp_obd, renew_capa)(exp, ocapa, cb);
1823         RETURN(rc);
1824 }
1825
1826 static inline int md_unpack_capa(struct obd_export *exp,
1827                                  struct ptlrpc_request *req,
1828                                  const struct req_msg_field *field,
1829                                  struct obd_capa **oc)
1830 {
1831         int rc;
1832         ENTRY;
1833         EXP_CHECK_MD_OP(exp, unpack_capa);
1834         EXP_MD_COUNTER_INCREMENT(exp, unpack_capa);
1835         rc = MDP(exp->exp_obd, unpack_capa)(exp, req, field, oc);
1836         RETURN(rc);
1837 }
1838
1839 static inline int md_intent_getattr_async(struct obd_export *exp,
1840                                           struct md_enqueue_info *minfo,
1841                                           struct ldlm_enqueue_info *einfo)
1842 {
1843         int rc;
1844         ENTRY;
1845         EXP_CHECK_MD_OP(exp, intent_getattr_async);
1846         EXP_MD_COUNTER_INCREMENT(exp, intent_getattr_async);
1847         rc = MDP(exp->exp_obd, intent_getattr_async)(exp, minfo, einfo);
1848         RETURN(rc);
1849 }
1850
1851 static inline int md_revalidate_lock(struct obd_export *exp,
1852                                      struct lookup_intent *it,
1853                                      struct lu_fid *fid, __u64 *bits)
1854 {
1855         int rc;
1856         ENTRY;
1857         EXP_CHECK_MD_OP(exp, revalidate_lock);
1858         EXP_MD_COUNTER_INCREMENT(exp, revalidate_lock);
1859         rc = MDP(exp->exp_obd, revalidate_lock)(exp, it, fid, bits);
1860         RETURN(rc);
1861 }
1862
1863 static inline int md_get_fid_from_lsm(struct obd_export *exp,
1864                                       const struct lmv_stripe_md *lsm,
1865                                       const char *name, int namelen,
1866                                       struct lu_fid *fid)
1867 {
1868         int rc;
1869         ENTRY;
1870         EXP_CHECK_MD_OP(exp, get_fid_from_lsm);
1871         EXP_MD_COUNTER_INCREMENT(exp, get_fid_from_lsm);
1872         rc = MDP(exp->exp_obd, get_fid_from_lsm)(exp, lsm, name, namelen, fid);
1873         RETURN(rc);
1874 }
1875
1876 /* OBD Metadata Support */
1877
1878 extern int obd_init_caches(void);
1879 extern void obd_cleanup_caches(void);
1880
1881 /* support routines */
1882 extern struct kmem_cache *obdo_cachep;
1883
1884 #define OBDO_ALLOC(ptr)                                                       \
1885 do {                                                                          \
1886         OBD_SLAB_ALLOC_PTR_GFP((ptr), obdo_cachep, GFP_NOFS);             \
1887 } while(0)
1888
1889 #define OBDO_FREE(ptr)                                                        \
1890 do {                                                                          \
1891         OBD_SLAB_FREE_PTR((ptr), obdo_cachep);                                \
1892 } while(0)
1893
1894
1895 typedef int (*register_lwp_cb)(void *data);
1896
1897 struct lwp_register_item {
1898         struct obd_export **lri_exp;
1899         register_lwp_cb     lri_cb_func;
1900         void               *lri_cb_data;
1901         cfs_list_t          lri_list;
1902         char                lri_name[MTI_NAME_MAXLEN];
1903 };
1904
1905 /* I'm as embarrassed about this as you are.
1906  *
1907  * <shaver> // XXX do not look into _superhack with remaining eye
1908  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
1909 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
1910
1911 /* obd_mount.c */
1912 #ifdef HAVE_SERVER_SUPPORT
1913 int lustre_register_lwp_item(const char *lwpname, struct obd_export **exp,
1914                              register_lwp_cb cb_func, void *cb_data);
1915 void lustre_deregister_lwp_item(struct obd_export **exp);
1916 struct obd_export *lustre_find_lwp_by_index(const char *dev, __u32 idx);
1917 int tgt_name2lwp_name(const char *tgt_name, char *lwp_name, int len, __u32 idx);
1918 #endif /* HAVE_SERVER_SUPPORT */
1919
1920 /* sysctl.c */
1921 extern void obd_sysctl_init (void);
1922 extern void obd_sysctl_clean (void);
1923
1924 /* uuid.c  */
1925 typedef __u8 class_uuid_t[16];
1926 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
1927
1928 /* lustre_peer.c    */
1929 int lustre_uuid_to_peer(const char *uuid, lnet_nid_t *peer_nid, int index);
1930 int class_add_uuid(const char *uuid, __u64 nid);
1931 int class_del_uuid (const char *uuid);
1932 int class_check_uuid(struct obd_uuid *uuid, __u64 nid);
1933 void class_init_uuidlist(void);
1934 void class_exit_uuidlist(void);
1935
1936 /* prng.c */
1937 #define ll_generate_random_uuid(uuid_out) cfs_get_random_bytes(uuid_out, sizeof(class_uuid_t))
1938
1939 /* root squash info */
1940 struct rw_semaphore;
1941 struct root_squash_info {
1942         uid_t                   rsi_uid;
1943         gid_t                   rsi_gid;
1944         struct list_head        rsi_nosquash_nids;
1945         struct rw_semaphore     rsi_sem;
1946 };
1947
1948 #ifdef __KERNEL__
1949 int server_name2index(const char *svname, __u32 *idx, const char **endptr);
1950 #else
1951 # define server_name2index(name, idx, ptr)      do {} while (0)
1952 #endif
1953
1954 #endif /* __LINUX_OBD_CLASS_H */