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

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, 2012, Intel Corporation.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  */
  36 #ifndef __CLASS_OBD_H
  37 #define __CLASS_OBD_H
  38
  39
  40 #include "obd_support.h"
  41 #include "lustre_import.h"
  42 #include "lustre_net.h"
  43 #include "obd.h"
  44 #include "lustre_lib.h"
  45 #include "lustre/lustre_idl.h"
  46 #include "lprocfs_status.h"
  47
  48 #define OBD_STATFS_NODELAY      0x0001  /* requests should be send without delay
  49                                          * and resends for avoid deadlocks */
  50 #define OBD_STATFS_FROM_CACHE   0x0002  /* the statfs callback should not update
  51                                          * obd_osfs_age */
  52 #define OBD_STATFS_PTLRPCD      0x0004  /* requests will be sent via ptlrpcd
  53                                          * instead of a specific set. This
  54                                          * means that we cannot rely on the set
  55                                          * interpret routine to be called.
  56                                          * lov_statfs_fini() must thus be called
  57                                          * by the request interpret routine */
  58 #define OBD_STATFS_FOR_MDT0     0x0008  /* The statfs is only for retrieving
  59                                          * information from MDT0. */
  60 #define OBD_FL_PUNCH    0x00000001      /* To indicate it is punch operation */
  61
  62 /* OBD Device Declarations */
  63 extern struct obd_device *obd_devs[MAX_OBD_DEVICES];
  64 extern rwlock_t obd_dev_lock;
  65
  66 /* OBD Operations Declarations */
  67 extern struct obd_device *class_conn2obd(struct lustre_handle *);
  68 extern struct obd_device *class_exp2obd(struct obd_export *);
  69 extern int class_handle_ioctl(unsigned int cmd, unsigned long arg);
  70 extern int lustre_get_jobid(char *jobid);
  71
  72 struct lu_device_type;
  73
  74 /* genops.c */
  75 extern struct list_head obd_types;
  76 struct obd_export *class_conn2export(struct lustre_handle *);
  77 int class_register_type(struct obd_ops *, struct md_ops *,
  78                         struct lprocfs_vars *, const char *nm,
  79                         struct lu_device_type *ldt);
  80 int class_unregister_type(const char *nm);
  81
  82 struct obd_device *class_newdev(const char *type_name, const char *name);
  83 void class_release_dev(struct obd_device *obd);
  84
  85 int class_name2dev(const char *name);
  86 struct obd_device *class_name2obd(const char *name);
  87 int class_uuid2dev(struct obd_uuid *uuid);
  88 struct obd_device *class_uuid2obd(struct obd_uuid *uuid);
  89 void class_obd_list(void);
  90 struct obd_device *class_find_client_obd(struct obd_uuid *tgt_uuid,
  91                                           const char *typ_name,
  92                                           struct obd_uuid *grp_uuid);
  93 struct obd_device *class_devices_in_group(struct obd_uuid *grp_uuid,
  94                                            int *next);
  95 struct obd_device *class_num2obd(int num);
  96 int get_devices_count(void);
  97
  98 int class_notify_sptlrpc_conf(const char *fsname, int namelen);
  99
 100 char *obd_export_nid2str(struct obd_export *exp);
 101
 102 int obd_export_evict_by_nid(struct obd_device *obd, const char *nid);
 103 int obd_export_evict_by_uuid(struct obd_device *obd, const char *uuid);
 104 int obd_connect_flags2str(char *page, int count, __u64 flags, char *sep);
 105
 106 int obd_zombie_impexp_init(void);
 107 void obd_zombie_impexp_stop(void);
 108 void obd_zombie_impexp_cull(void);
 109 void obd_zombie_barrier(void);
 110 void obd_exports_barrier(struct obd_device *obd);
 111 int kuc_len(int payload_len);
 112 struct kuc_hdr *kuc_ptr(void *p);
 113 int kuc_ispayload(void *p);
 114 void *kuc_alloc(int payload_len, int transport, int type);
 115 void kuc_free(void *p, int payload_len);
 116
 117 struct llog_handle;
 118 struct llog_rec_hdr;
 119 typedef int (*llog_cb_t)(const struct lu_env *, struct llog_handle *,
 120                          struct llog_rec_hdr *, void *);
 121 /* obd_config.c */
 122 struct lustre_cfg *lustre_cfg_rename(struct lustre_cfg *cfg,
 123                                      const char *new_name);
 124 int class_process_config(struct lustre_cfg *lcfg);
 125 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
 126                              struct lustre_cfg *lcfg, void *data);
 127 int class_attach(struct lustre_cfg *lcfg);
 128 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
 129 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg);
 130 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg);
 131 struct obd_device *class_incref(struct obd_device *obd,
 132                                 const char *scope, const void *source);
 133 void class_decref(struct obd_device *obd,
 134                   const char *scope, const void *source);
 135 void dump_exports(struct obd_device *obd, int locks);
 136 int class_config_llog_handler(const struct lu_env *env,
 137                               struct llog_handle *handle,
 138                               struct llog_rec_hdr *rec, void *data);
 139 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg);
 140 int class_add_uuid(const char *uuid, __u64 nid);
 141
 142 /*obdecho*/
 143 #if defined (CONFIG_PROC_FS)
 144 extern void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars);
 145 #else
 146 static inline void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars)
 147 {
 148         memset(lvars, 0, sizeof(*lvars));
 149 }
 150 #endif
 151
 152 #define CFG_F_START     0x01   /* Set when we start updating from a log */
 153 #define CFG_F_MARKER    0x02   /* We are within a maker */
 154 #define CFG_F_SKIP      0x04   /* We should ignore this cfg command */
 155 #define CFG_F_COMPAT146 0x08   /* Allow old-style logs */
 156 #define CFG_F_EXCLUDE   0x10   /* OST exclusion list */
 157
 158 /* Passed as data param to class_config_parse_llog */
 159 struct config_llog_instance {
 160         char           *cfg_obdname;
 161         void           *cfg_instance;
 162         struct super_block *cfg_sb;
 163         struct obd_uuid     cfg_uuid;
 164         llog_cb_t           cfg_callback;
 165         int              cfg_last_idx; /* for partial llog processing */
 166         int              cfg_flags;
 167 };
 168 int class_config_parse_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
 169                             char *name, struct config_llog_instance *cfg);
 170 int class_config_dump_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
 171                            char *name, struct config_llog_instance *cfg);
 172
 173 enum {
 174         CONFIG_T_CONFIG  = 0,
 175         CONFIG_T_SPTLRPC = 1,
 176         CONFIG_T_RECOVER = 2,
 177         CONFIG_T_PARAMS  = 3,
 178         CONFIG_T_MAX     = 4
 179 };
 180
 181 #define PARAMS_FILENAME "params"
 182 #define LCTL_UPCALL     "lctl"
 183
 184 /* list of active configuration logs  */
 185 struct config_llog_data {
 186         struct ldlm_res_id        cld_resid;
 187         struct config_llog_instance cld_cfg;
 188         struct list_head                  cld_list_chain;
 189         atomic_t                cld_refcount;
 190         struct config_llog_data    *cld_sptlrpc;/* depended sptlrpc log */
 191         struct config_llog_data    *cld_params; /* common parameters log */
 192         struct config_llog_data    *cld_recover;/* imperative recover log */
 193         struct obd_export         *cld_mgcexp;
 194         struct mutex                cld_lock;
 195         int                      cld_type;
 196         unsigned int            cld_stopping:1, /* we were told to stop
 197                                                      * watching */
 198                                     cld_lostlock:1; /* lock not requeued */
 199         char                    cld_logname[0];
 200 };
 201
 202 struct lustre_profile {
 203         struct list_head       lp_list;
 204         char        *lp_profile;
 205         char        *lp_dt;
 206         char        *lp_md;
 207 };
 208
 209 struct lustre_profile *class_get_profile(const char *prof);
 210 void class_del_profile(const char *prof);
 211 void class_del_profiles(void);
 212
 213 #if LUSTRE_TRACKS_LOCK_EXP_REFS
 214
 215 void __class_export_add_lock_ref(struct obd_export *, struct ldlm_lock *);
 216 void __class_export_del_lock_ref(struct obd_export *, struct ldlm_lock *);
 217 extern void (*class_export_dump_hook)(struct obd_export *);
 218
 219 #else
 220
 221 #define __class_export_add_lock_ref(exp, lock)       do {} while (0)
 222 #define __class_export_del_lock_ref(exp, lock)       do {} while (0)
 223
 224 #endif
 225
 226 static inline void class_export_rpc_inc(struct obd_export *exp)
 227 {
 228         atomic_inc(&(exp)->exp_rpc_count);
 229         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",
 230                (exp), atomic_read(&(exp)->exp_rpc_count));
 231 }
 232
 233 static inline void class_export_rpc_dec(struct obd_export *exp)
 234 {
 235         LASSERT_ATOMIC_POS(&exp->exp_rpc_count);
 236         atomic_dec(&(exp)->exp_rpc_count);
 237         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",
 238                (exp), atomic_read(&(exp)->exp_rpc_count));
 239 }
 240
 241 #define class_export_lock_get(exp, lock)                                \
 242 ({                                                                    \
 243         atomic_inc(&(exp)->exp_locks_count);                    \
 244         __class_export_add_lock_ref(exp, lock);                  \
 245         CDEBUG(D_INFO, "lock GETting export %p : new locks_count %d\n", \
 246                (exp), atomic_read(&(exp)->exp_locks_count));    \
 247         class_export_get(exp);                                    \
 248 })
 249
 250 #define class_export_lock_put(exp, lock)                                \
 251 ({                                                                    \
 252         LASSERT_ATOMIC_POS(&exp->exp_locks_count);                    \
 253         atomic_dec(&(exp)->exp_locks_count);                    \
 254         __class_export_del_lock_ref(exp, lock);                  \
 255         CDEBUG(D_INFO, "lock PUTting export %p : new locks_count %d\n", \
 256                (exp), atomic_read(&(exp)->exp_locks_count));    \
 257         class_export_put(exp);                                    \
 258 })
 259
 260 #define class_export_cb_get(exp)                                        \
 261 ({                                                                    \
 262         atomic_inc(&(exp)->exp_cb_count);                          \
 263         CDEBUG(D_INFO, "callback GETting export %p : new cb_count %d\n",\
 264                (exp), atomic_read(&(exp)->exp_cb_count));          \
 265         class_export_get(exp);                                    \
 266 })
 267
 268 #define class_export_cb_put(exp)                                        \
 269 ({                                                                    \
 270         LASSERT_ATOMIC_POS(&exp->exp_cb_count);                  \
 271         atomic_dec(&(exp)->exp_cb_count);                          \
 272         CDEBUG(D_INFO, "callback PUTting export %p : new cb_count %d\n",\
 273                (exp), atomic_read(&(exp)->exp_cb_count));          \
 274         class_export_put(exp);                                    \
 275 })
 276
 277 /* genops.c */
 278 struct obd_export *class_export_get(struct obd_export *exp);
 279 void class_export_put(struct obd_export *exp);
 280 struct obd_export *class_new_export(struct obd_device *obddev,
 281                                     struct obd_uuid *cluuid);
 282 void class_unlink_export(struct obd_export *exp);
 283
 284 struct obd_import *class_import_get(struct obd_import *);
 285 void class_import_put(struct obd_import *);
 286 struct obd_import *class_new_import(struct obd_device *obd);
 287 void class_destroy_import(struct obd_import *exp);
 288
 289 struct obd_type *class_search_type(const char *name);
 290 struct obd_type *class_get_type(const char *name);
 291 void class_put_type(struct obd_type *type);
 292 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 293                   struct obd_uuid *cluuid);
 294 int class_disconnect(struct obd_export *exp);
 295 void class_fail_export(struct obd_export *exp);
 296 int class_connected_export(struct obd_export *exp);
 297 void class_disconnect_exports(struct obd_device *obddev);
 298 int class_manual_cleanup(struct obd_device *obd);
 299 void class_disconnect_stale_exports(struct obd_device *,
 300                                     int (*test_export)(struct obd_export *));
 301 static inline enum obd_option exp_flags_from_obd(struct obd_device *obd)
 302 {
 303         return ((obd->obd_fail ? OBD_OPT_FAILOVER : 0) |
 304                 (obd->obd_force ? OBD_OPT_FORCE : 0) |
 305                 (obd->obd_abort_recovery ? OBD_OPT_ABORT_RECOV : 0) |
 306                 0);
 307 }
 308
 309 struct inode;
 310 struct lu_attr;
 311 struct obdo;
 312 void obdo_from_la(struct obdo *dst, struct lu_attr *la, __u64 valid);
 313 void la_from_obdo(struct lu_attr *la, struct obdo *dst, u32 valid);
 314 void obdo_refresh_inode(struct inode *dst, struct obdo *src, u32 valid);
 315 void obdo_to_inode(struct inode *dst, struct obdo *src, u32 valid);
 316
 317 void obdo_cpy_md(struct obdo *dst, struct obdo *src, u32 valid);
 318 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
 319 void obdo_from_iattr(struct obdo *oa, struct iattr *attr,
 320                      unsigned int ia_valid);
 321 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, u32 valid);
 322 void md_from_obdo(struct md_op_data *op_data, struct obdo *oa, u32 valid);
 323 void obdo_from_md(struct obdo *oa, struct md_op_data *op_data,
 324                   unsigned int valid);
 325
 326 void obdo_cpu_to_le(struct obdo *dobdo, struct obdo *sobdo);
 327 void obdo_le_to_cpu(struct obdo *dobdo, struct obdo *sobdo);
 328
 329 #define OBT(dev)        (dev)->obd_type
 330 #define OBP(dev, op)    (dev)->obd_type->typ_dt_ops->o_ ## op
 331 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
 332 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 333
 334 /* Ensure obd_setup: used for cleanup which must be called
 335    while obd is stopping */
 336 static inline int obd_check_dev(struct obd_device *obd)
 337 {
 338         if (!obd) {
 339                 CERROR("NULL device\n");
 340                 return -ENODEV;
 341         }
 342         return 0;
 343 }
 344
 345 /* ensure obd_setup and !obd_stopping */
 346 static inline int obd_check_dev_active(struct obd_device *obd)
 347 {
 348         int rc;
 349
 350         rc = obd_check_dev(obd);
 351         if (rc)
 352                 return rc;
 353         if (!obd->obd_set_up || obd->obd_stopping) {
 354                 CERROR("Device %d not setup\n", obd->obd_minor);
 355                 return -ENODEV;
 356         }
 357         return rc;
 358 }
 359
 360 #if defined (CONFIG_PROC_FS)
 361 #define OBD_COUNTER_OFFSET(op)                            \
 362         ((offsetof(struct obd_ops, o_ ## op) -            \
 363           offsetof(struct obd_ops, o_iocontrol))                \
 364          / sizeof(((struct obd_ops *)(0))->o_iocontrol))
 365
 366 #define OBD_COUNTER_INCREMENT(obdx, op)                    \
 367         if ((obdx)->obd_stats != NULL) {                          \
 368                 unsigned int coffset;                        \
 369                 coffset = (unsigned int)((obdx)->obd_cntr_base) + \
 370                         OBD_COUNTER_OFFSET(op);            \
 371                 LASSERT(coffset < (obdx)->obd_stats->ls_num);     \
 372                 lprocfs_counter_incr((obdx)->obd_stats, coffset); \
 373         }
 374
 375 #define EXP_COUNTER_INCREMENT(export, op)                                   \
 376         if ((export)->exp_obd->obd_stats != NULL) {                       \
 377                 unsigned int coffset;                                   \
 378                 coffset = (unsigned int)((export)->exp_obd->obd_cntr_base) + \
 379                         OBD_COUNTER_OFFSET(op);                       \
 380                 LASSERT(coffset < (export)->exp_obd->obd_stats->ls_num);     \
 381                 lprocfs_counter_incr((export)->exp_obd->obd_stats, coffset); \
 382                 if ((export)->exp_nid_stats != NULL &&                 \
 383                     (export)->exp_nid_stats->nid_stats != NULL)       \
 384                         lprocfs_counter_incr(                           \
 385                                 (export)->exp_nid_stats->nid_stats, coffset);\
 386         }
 387
 388 #define MD_COUNTER_OFFSET(op)                              \
 389         ((offsetof(struct md_ops, m_ ## op) -              \
 390           offsetof(struct md_ops, m_getstatus))          \
 391          / sizeof(((struct md_ops *)(0))->m_getstatus))
 392
 393 #define MD_COUNTER_INCREMENT(obdx, op)                     \
 394         if ((obd)->md_stats != NULL) {                     \
 395                 unsigned int coffset;                       \
 396                 coffset = (unsigned int)((obdx)->md_cntr_base) + \
 397                         MD_COUNTER_OFFSET(op);             \
 398                 LASSERT(coffset < (obdx)->md_stats->ls_num);     \
 399                 lprocfs_counter_incr((obdx)->md_stats, coffset); \
 400         }
 401
 402 #define EXP_MD_COUNTER_INCREMENT(export, op)                             \
 403         if ((export)->exp_obd->obd_stats != NULL) {                       \
 404                 unsigned int coffset;                                   \
 405                 coffset = (unsigned int)((export)->exp_obd->md_cntr_base) +  \
 406                         MD_COUNTER_OFFSET(op);                         \
 407                 LASSERT(coffset < (export)->exp_obd->md_stats->ls_num);      \
 408                 lprocfs_counter_incr((export)->exp_obd->md_stats, coffset);  \
 409                 if ((export)->exp_md_stats != NULL)                       \
 410                         lprocfs_counter_incr(                           \
 411                                 (export)->exp_md_stats, coffset);           \
 412         }
 413
 414 #else
 415 #define OBD_COUNTER_OFFSET(op)
 416 #define OBD_COUNTER_INCREMENT(obd, op)
 417 #define EXP_COUNTER_INCREMENT(exp, op)
 418 #define MD_COUNTER_INCREMENT(obd, op)
 419 #define EXP_MD_COUNTER_INCREMENT(exp, op)
 420 #endif
 421
 422 static inline int lprocfs_nid_ldlm_stats_init(struct nid_stat *tmp)
 423 {
 424         /* Always add in ldlm_stats */
 425         tmp->nid_ldlm_stats = lprocfs_alloc_stats(LDLM_LAST_OPC - LDLM_FIRST_OPC
 426                                                   ,LPROCFS_STATS_FLAG_NOPERCPU);
 427         if (tmp->nid_ldlm_stats == NULL)
 428                 return -ENOMEM;
 429
 430         lprocfs_init_ldlm_stats(tmp->nid_ldlm_stats);
 431
 432         return lprocfs_register_stats(tmp->nid_proc, "ldlm_stats",
 433                                       tmp->nid_ldlm_stats);
 434 }
 435
 436 #define OBD_CHECK_MD_OP(obd, op, err)                      \
 437 do {                                                        \
 438         if (!OBT(obd) || !MDP((obd), op)) {                  \
 439                 if (err)                                        \
 440                         CERROR("md_" #op ": dev %s/%d no operation\n", \
 441                                obd->obd_name, obd->obd_minor);  \
 442                 return err;                                 \
 443         }                                                      \
 444 } while (0)
 445
 446 #define EXP_CHECK_MD_OP(exp, op)                                \
 447 do {                                                        \
 448         if ((exp) == NULL) {                                \
 449                 CERROR("obd_" #op ": NULL export\n");      \
 450                 return -ENODEV;                         \
 451         }                                                      \
 452         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 453                 CERROR("obd_" #op ": cleaned up obd\n");        \
 454                 return -EOPNOTSUPP;                         \
 455         }                                                      \
 456         if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
 457                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 458                        (exp)->exp_obd->obd_name,                \
 459                        (exp)->exp_obd->obd_minor);            \
 460                 return -EOPNOTSUPP;                         \
 461         }                                                      \
 462 } while (0)
 463
 464
 465 #define OBD_CHECK_DT_OP(obd, op, err)                      \
 466 do {                                                        \
 467         if (!OBT(obd) || !OBP((obd), op)) {                  \
 468                 if (err)                                        \
 469                         CERROR("obd_" #op ": dev %d no operation\n",    \
 470                                obd->obd_minor);          \
 471                 return err;                                 \
 472         }                                                      \
 473 } while (0)
 474
 475 #define EXP_CHECK_DT_OP(exp, op)                                \
 476 do {                                                        \
 477         if ((exp) == NULL) {                                \
 478                 CERROR("obd_" #op ": NULL export\n");      \
 479                 return -ENODEV;                         \
 480         }                                                      \
 481         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 482                 CERROR("obd_" #op ": cleaned up obd\n");        \
 483                 return -EOPNOTSUPP;                         \
 484         }                                                      \
 485         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 486                 CERROR("obd_" #op ": dev %d no operation\n",    \
 487                        (exp)->exp_obd->obd_minor);            \
 488                 return -EOPNOTSUPP;                         \
 489         }                                                      \
 490 } while (0)
 491
 492 #define CTXT_CHECK_OP(ctxt, op, err)                             \
 493 do {                                                             \
 494         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {             \
 495                 if (err)                                             \
 496                         CERROR("lop_" #op ": dev %d no operation\n", \
 497                                ctxt->loc_obd->obd_minor);           \
 498                 return err;                                      \
 499         }                                                           \
 500 } while (0)
 501
 502 static inline int class_devno_max(void)
 503 {
 504         return MAX_OBD_DEVICES;
 505 }
 506
 507 static inline int obd_get_info(const struct lu_env *env,
 508                                struct obd_export *exp, __u32 keylen,
 509                                void *key, __u32 *vallen, void *val,
 510                                struct lov_stripe_md *lsm)
 511 {
 512         int rc;
 513
 514         EXP_CHECK_DT_OP(exp, get_info);
 515         EXP_COUNTER_INCREMENT(exp, get_info);
 516
 517         rc = OBP(exp->exp_obd, get_info)(env, exp, keylen, key, vallen, val,
 518                                          lsm);
 519         return rc;
 520 }
 521
 522 static inline int obd_set_info_async(const struct lu_env *env,
 523                                      struct obd_export *exp, u32 keylen,
 524                                      void *key, u32 vallen, void *val,
 525                                      struct ptlrpc_request_set *set)
 526 {
 527         int rc;
 528
 529         EXP_CHECK_DT_OP(exp, set_info_async);
 530         EXP_COUNTER_INCREMENT(exp, set_info_async);
 531
 532         rc = OBP(exp->exp_obd, set_info_async)(env, exp, keylen, key, vallen,
 533                                                val, set);
 534         return rc;
 535 }
 536
 537 /*
 538  * obd-lu integration.
 539  *
 540  * Functionality is being moved into new lu_device-based layering, but some
 541  * pieces of configuration process are still based on obd devices.
 542  *
 543  * Specifically, lu_device_type_operations::ldto_device_alloc() methods fully
 544  * subsume ->o_setup() methods of obd devices they replace. The same for
 545  * lu_device_operations::ldo_process_config() and ->o_process_config(). As a
 546  * result, obd_setup() and obd_process_config() branch and call one XOR
 547  * another.
 548  *
 549  * Yet neither lu_device_type_operations::ldto_device_fini() nor
 550  * lu_device_type_operations::ldto_device_free() fully implement the
 551  * functionality of ->o_precleanup() and ->o_cleanup() they override. Hence,
 552  * obd_precleanup() and obd_cleanup() call both lu_device and obd operations.
 553  */
 554
 555 #define DECLARE_LU_VARS(ldt, d)          \
 556         struct lu_device_type *ldt;       \
 557         struct lu_device *d
 558
 559 static inline int obd_setup(struct obd_device *obd, struct lustre_cfg *cfg)
 560 {
 561         int rc;
 562         DECLARE_LU_VARS(ldt, d);
 563
 564         ldt = obd->obd_type->typ_lu;
 565         if (ldt != NULL) {
 566                 struct lu_context  session_ctx;
 567                 struct lu_env env;
 568                 lu_context_init(&session_ctx, LCT_SESSION);
 569                 session_ctx.lc_thread = NULL;
 570                 lu_context_enter(&session_ctx);
 571
 572                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 573                 if (rc == 0) {
 574                         env.le_ses = &session_ctx;
 575                         d = ldt->ldt_ops->ldto_device_alloc(&env, ldt, cfg);
 576                         lu_env_fini(&env);
 577                         if (!IS_ERR(d)) {
 578                                 obd->obd_lu_dev = d;
 579                                 d->ld_obd = obd;
 580                                 rc = 0;
 581                         } else
 582                                 rc = PTR_ERR(d);
 583                 }
 584                 lu_context_exit(&session_ctx);
 585                 lu_context_fini(&session_ctx);
 586
 587         } else {
 588                 OBD_CHECK_DT_OP(obd, setup, -EOPNOTSUPP);
 589                 OBD_COUNTER_INCREMENT(obd, setup);
 590                 rc = OBP(obd, setup)(obd, cfg);
 591         }
 592         return rc;
 593 }
 594
 595 static inline int obd_precleanup(struct obd_device *obd,
 596                                  enum obd_cleanup_stage cleanup_stage)
 597 {
 598         int rc;
 599         DECLARE_LU_VARS(ldt, d);
 600
 601         rc = obd_check_dev(obd);
 602         if (rc)
 603                 return rc;
 604         ldt = obd->obd_type->typ_lu;
 605         d = obd->obd_lu_dev;
 606         if (ldt != NULL && d != NULL) {
 607                 if (cleanup_stage == OBD_CLEANUP_EXPORTS) {
 608                         struct lu_env env;
 609
 610                         rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 611                         if (rc == 0) {
 612                                 ldt->ldt_ops->ldto_device_fini(&env, d);
 613                                 lu_env_fini(&env);
 614                         }
 615                 }
 616         }
 617         OBD_CHECK_DT_OP(obd, precleanup, 0);
 618         OBD_COUNTER_INCREMENT(obd, precleanup);
 619
 620         rc = OBP(obd, precleanup)(obd, cleanup_stage);
 621         return rc;
 622 }
 623
 624 static inline int obd_cleanup(struct obd_device *obd)
 625 {
 626         int rc;
 627         DECLARE_LU_VARS(ldt, d);
 628
 629         rc = obd_check_dev(obd);
 630         if (rc)
 631                 return rc;
 632
 633         ldt = obd->obd_type->typ_lu;
 634         d = obd->obd_lu_dev;
 635         if (ldt != NULL && d != NULL) {
 636                 struct lu_env env;
 637
 638                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 639                 if (rc == 0) {
 640                         ldt->ldt_ops->ldto_device_free(&env, d);
 641                         lu_env_fini(&env);
 642                         obd->obd_lu_dev = NULL;
 643                 }
 644         }
 645         OBD_CHECK_DT_OP(obd, cleanup, 0);
 646         OBD_COUNTER_INCREMENT(obd, cleanup);
 647
 648         rc = OBP(obd, cleanup)(obd);
 649         return rc;
 650 }
 651
 652 static inline void obd_cleanup_client_import(struct obd_device *obd)
 653 {
 654         /* If we set up but never connected, the
 655            client import will not have been cleaned. */
 656         down_write(&obd->u.cli.cl_sem);
 657         if (obd->u.cli.cl_import) {
 658                 struct obd_import *imp;
 659                 imp = obd->u.cli.cl_import;
 660                 CDEBUG(D_CONFIG, "%s: client import never connected\n",
 661                        obd->obd_name);
 662                 ptlrpc_invalidate_import(imp);
 663                 if (imp->imp_rq_pool) {
 664                         ptlrpc_free_rq_pool(imp->imp_rq_pool);
 665                         imp->imp_rq_pool = NULL;
 666                 }
 667                 client_destroy_import(imp);
 668                 obd->u.cli.cl_import = NULL;
 669         }
 670         up_write(&obd->u.cli.cl_sem);
 671 }
 672
 673 static inline int
 674 obd_process_config(struct obd_device *obd, int datalen, void *data)
 675 {
 676         int rc;
 677         DECLARE_LU_VARS(ldt, d);
 678
 679         rc = obd_check_dev(obd);
 680         if (rc)
 681                 return rc;
 682
 683         obd->obd_process_conf = 1;
 684         ldt = obd->obd_type->typ_lu;
 685         d = obd->obd_lu_dev;
 686         if (ldt != NULL && d != NULL) {
 687                 struct lu_env env;
 688
 689                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 690                 if (rc == 0) {
 691                         rc = d->ld_ops->ldo_process_config(&env, d, data);
 692                         lu_env_fini(&env);
 693                 }
 694         } else {
 695                 OBD_CHECK_DT_OP(obd, process_config, -EOPNOTSUPP);
 696                 rc = OBP(obd, process_config)(obd, datalen, data);
 697         }
 698         OBD_COUNTER_INCREMENT(obd, process_config);
 699         obd->obd_process_conf = 0;
 700
 701         return rc;
 702 }
 703
 704 /* Pack an in-memory MD struct for storage on disk.
 705  * Returns +ve size of packed MD (0 for free), or -ve error.
 706  *
 707  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 708  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 709  * If @*disk_tgt == NULL, it will be allocated
 710  */
 711 static inline int obd_packmd(struct obd_export *exp,
 712                              struct lov_mds_md **disk_tgt,
 713                              struct lov_stripe_md *mem_src)
 714 {
 715         int rc;
 716
 717         EXP_CHECK_DT_OP(exp, packmd);
 718         EXP_COUNTER_INCREMENT(exp, packmd);
 719
 720         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 721         return rc;
 722 }
 723
 724 static inline int obd_size_diskmd(struct obd_export *exp,
 725                                   struct lov_stripe_md *mem_src)
 726 {
 727         return obd_packmd(exp, NULL, mem_src);
 728 }
 729
 730 static inline int obd_free_diskmd(struct obd_export *exp,
 731                                   struct lov_mds_md **disk_tgt)
 732 {
 733         LASSERT(disk_tgt);
 734         LASSERT(*disk_tgt);
 735         /*
 736          * LU-2590, for caller's convenience, *disk_tgt could be host
 737          * endianness, it needs swab to LE if necessary, while just
 738          * lov_mds_md header needs it for figuring out how much memory
 739          * needs to be freed.
 740          */
 741         if ((cpu_to_le32(LOV_MAGIC) != LOV_MAGIC) &&
 742             (((*disk_tgt)->lmm_magic == LOV_MAGIC_V1) ||
 743              ((*disk_tgt)->lmm_magic == LOV_MAGIC_V3)))
 744                 lustre_swab_lov_mds_md(*disk_tgt);
 745         return obd_packmd(exp, disk_tgt, NULL);
 746 }
 747
 748 /* Unpack an MD struct from disk to in-memory format.
 749  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 750  *
 751  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 752  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 753  * If @*mem_tgt == NULL, it will be allocated
 754  */
 755 static inline int obd_unpackmd(struct obd_export *exp,
 756                                struct lov_stripe_md **mem_tgt,
 757                                struct lov_mds_md *disk_src,
 758                                int disk_len)
 759 {
 760         int rc;
 761
 762         EXP_CHECK_DT_OP(exp, unpackmd);
 763         EXP_COUNTER_INCREMENT(exp, unpackmd);
 764
 765         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 766         return rc;
 767 }
 768
 769 /* helper functions */
 770 static inline int obd_alloc_memmd(struct obd_export *exp,
 771                                   struct lov_stripe_md **mem_tgt)
 772 {
 773         LASSERT(mem_tgt);
 774         LASSERT(*mem_tgt == NULL);
 775         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 776 }
 777
 778 static inline int obd_free_memmd(struct obd_export *exp,
 779                                  struct lov_stripe_md **mem_tgt)
 780 {
 781         int rc;
 782
 783         LASSERT(mem_tgt);
 784         LASSERT(*mem_tgt);
 785         rc = obd_unpackmd(exp, mem_tgt, NULL, 0);
 786         *mem_tgt = NULL;
 787         return rc;
 788 }
 789
 790 static inline int obd_create(const struct lu_env *env, struct obd_export *exp,
 791                              struct obdo *obdo, struct lov_stripe_md **ea,
 792                              struct obd_trans_info *oti)
 793 {
 794         int rc;
 795
 796         EXP_CHECK_DT_OP(exp, create);
 797         EXP_COUNTER_INCREMENT(exp, create);
 798
 799         rc = OBP(exp->exp_obd, create)(env, exp, obdo, ea, oti);
 800         return rc;
 801 }
 802
 803 static inline int obd_destroy(const struct lu_env *env, struct obd_export *exp,
 804                               struct obdo *obdo, struct lov_stripe_md *ea,
 805                               struct obd_trans_info *oti,
 806                               struct obd_export *md_exp, void *capa)
 807 {
 808         int rc;
 809
 810         EXP_CHECK_DT_OP(exp, destroy);
 811         EXP_COUNTER_INCREMENT(exp, destroy);
 812
 813         rc = OBP(exp->exp_obd, destroy)(env, exp, obdo, ea, oti, md_exp, capa);
 814         return rc;
 815 }
 816
 817 static inline int obd_getattr(const struct lu_env *env, struct obd_export *exp,
 818                               struct obd_info *oinfo)
 819 {
 820         int rc;
 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
 835         EXP_CHECK_DT_OP(exp, getattr_async);
 836         EXP_COUNTER_INCREMENT(exp, getattr_async);
 837
 838         rc = OBP(exp->exp_obd, getattr_async)(exp, oinfo, set);
 839         return rc;
 840 }
 841
 842 static inline int obd_setattr(const struct lu_env *env, struct obd_export *exp,
 843                               struct obd_info *oinfo,
 844                               struct obd_trans_info *oti)
 845 {
 846         int rc;
 847
 848         EXP_CHECK_DT_OP(exp, setattr);
 849         EXP_COUNTER_INCREMENT(exp, setattr);
 850
 851         rc = OBP(exp->exp_obd, setattr)(env, exp, oinfo, oti);
 852         return rc;
 853 }
 854
 855 /* This performs all the requests set init/wait/destroy actions. */
 856 static inline int obd_setattr_rqset(struct obd_export *exp,
 857                                     struct obd_info *oinfo,
 858                                     struct obd_trans_info *oti)
 859 {
 860         struct ptlrpc_request_set *set = NULL;
 861         int rc;
 862
 863         EXP_CHECK_DT_OP(exp, setattr_async);
 864         EXP_COUNTER_INCREMENT(exp, setattr_async);
 865
 866         set =  ptlrpc_prep_set();
 867         if (set == NULL)
 868                 return -ENOMEM;
 869
 870         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 871         if (rc == 0)
 872                 rc = ptlrpc_set_wait(set);
 873         ptlrpc_set_destroy(set);
 874         return rc;
 875 }
 876
 877 /* This adds all the requests into @set if @set != NULL, otherwise
 878    all requests are sent asynchronously without waiting for response. */
 879 static inline int obd_setattr_async(struct obd_export *exp,
 880                                     struct obd_info *oinfo,
 881                                     struct obd_trans_info *oti,
 882                                     struct ptlrpc_request_set *set)
 883 {
 884         int rc;
 885
 886         EXP_CHECK_DT_OP(exp, setattr_async);
 887         EXP_COUNTER_INCREMENT(exp, setattr_async);
 888
 889         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 890         return rc;
 891 }
 892
 893 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 894                                int priority)
 895 {
 896         struct obd_device *obd = imp->imp_obd;
 897         int rc;
 898
 899         rc = obd_check_dev_active(obd);
 900         if (rc)
 901                 return rc;
 902         OBD_CHECK_DT_OP(obd, add_conn, -EOPNOTSUPP);
 903         OBD_COUNTER_INCREMENT(obd, add_conn);
 904
 905         rc = OBP(obd, add_conn)(imp, uuid, priority);
 906         return rc;
 907 }
 908
 909 static inline int obd_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
 910 {
 911         struct obd_device *obd = imp->imp_obd;
 912         int rc;
 913
 914         rc = obd_check_dev_active(obd);
 915         if (rc)
 916                 return rc;
 917         OBD_CHECK_DT_OP(obd, del_conn, -EOPNOTSUPP);
 918         OBD_COUNTER_INCREMENT(obd, del_conn);
 919
 920         rc = OBP(obd, del_conn)(imp, uuid);
 921         return rc;
 922 }
 923
 924 static inline struct obd_uuid *obd_get_uuid(struct obd_export *exp)
 925 {
 926         struct obd_uuid *uuid;
 927
 928         OBD_CHECK_DT_OP(exp->exp_obd, get_uuid, NULL);
 929         EXP_COUNTER_INCREMENT(exp, get_uuid);
 930
 931         uuid = OBP(exp->exp_obd, get_uuid)(exp);
 932         return uuid;
 933 }
 934
 935 /** Create a new /a exp on device /a obd for the uuid /a cluuid
 936  * @param exp New export handle
 937  * @param d Connect data, supported flags are set, flags also understood
 938  *    by obd are returned.
 939  */
 940 static inline int obd_connect(const struct lu_env *env,
 941                               struct obd_export **exp, struct obd_device *obd,
 942                               struct obd_uuid *cluuid,
 943                               struct obd_connect_data *data,
 944                               void *localdata)
 945 {
 946         int rc;
 947         __u64 ocf = data ? data->ocd_connect_flags : 0; /* for post-condition
 948                                                    * check */
 949
 950         rc = obd_check_dev_active(obd);
 951         if (rc)
 952                 return rc;
 953         OBD_CHECK_DT_OP(obd, connect, -EOPNOTSUPP);
 954         OBD_COUNTER_INCREMENT(obd, connect);
 955
 956         rc = OBP(obd, connect)(env, exp, obd, cluuid, data, localdata);
 957         /* check that only subset is granted */
 958         LASSERT(ergo(data != NULL, (data->ocd_connect_flags & ocf) ==
 959                                     data->ocd_connect_flags));
 960         return rc;
 961 }
 962
 963 static inline int obd_reconnect(const struct lu_env *env,
 964                                 struct obd_export *exp,
 965                                 struct obd_device *obd,
 966                                 struct obd_uuid *cluuid,
 967                                 struct obd_connect_data *d,
 968                                 void *localdata)
 969 {
 970         int rc;
 971         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 972                                                    * check */
 973
 974         rc = obd_check_dev_active(obd);
 975         if (rc)
 976                 return rc;
 977         OBD_CHECK_DT_OP(obd, reconnect, 0);
 978         OBD_COUNTER_INCREMENT(obd, reconnect);
 979
 980         rc = OBP(obd, reconnect)(env, exp, obd, cluuid, d, localdata);
 981         /* check that only subset is granted */
 982         LASSERT(ergo(d != NULL,
 983                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 984         return rc;
 985 }
 986
 987 static inline int obd_disconnect(struct obd_export *exp)
 988 {
 989         int rc;
 990
 991         EXP_CHECK_DT_OP(exp, disconnect);
 992         EXP_COUNTER_INCREMENT(exp, disconnect);
 993
 994         rc = OBP(exp->exp_obd, disconnect)(exp);
 995         return rc;
 996 }
 997
 998 static inline int obd_fid_init(struct obd_device *obd, struct obd_export *exp,
 999                                enum lu_cli_type type)
1000 {
1001         int rc;
1002
1003         OBD_CHECK_DT_OP(obd, fid_init, 0);
1004         OBD_COUNTER_INCREMENT(obd, fid_init);
1005
1006         rc = OBP(obd, fid_init)(obd, exp, type);
1007         return rc;
1008 }
1009
1010 static inline int obd_fid_fini(struct obd_device *obd)
1011 {
1012         int rc;
1013
1014         OBD_CHECK_DT_OP(obd, fid_fini, 0);
1015         OBD_COUNTER_INCREMENT(obd, fid_fini);
1016
1017         rc = OBP(obd, fid_fini)(obd);
1018         return rc;
1019 }
1020
1021 static inline int obd_fid_alloc(struct obd_export *exp,
1022                                 struct lu_fid *fid,
1023                                 struct md_op_data *op_data)
1024 {
1025         int rc;
1026
1027         EXP_CHECK_DT_OP(exp, fid_alloc);
1028         EXP_COUNTER_INCREMENT(exp, fid_alloc);
1029
1030         rc = OBP(exp->exp_obd, fid_alloc)(exp, fid, op_data);
1031         return rc;
1032 }
1033
1034 static inline int obd_pool_new(struct obd_device *obd, char *poolname)
1035 {
1036         int rc;
1037
1038         OBD_CHECK_DT_OP(obd, pool_new, -EOPNOTSUPP);
1039         OBD_COUNTER_INCREMENT(obd, pool_new);
1040
1041         rc = OBP(obd, pool_new)(obd, poolname);
1042         return rc;
1043 }
1044
1045 static inline int obd_pool_del(struct obd_device *obd, char *poolname)
1046 {
1047         int rc;
1048
1049         OBD_CHECK_DT_OP(obd, pool_del, -EOPNOTSUPP);
1050         OBD_COUNTER_INCREMENT(obd, pool_del);
1051
1052         rc = OBP(obd, pool_del)(obd, poolname);
1053         return rc;
1054 }
1055
1056 static inline int obd_pool_add(struct obd_device *obd, char *poolname, char *ostname)
1057 {
1058         int rc;
1059
1060         OBD_CHECK_DT_OP(obd, pool_add, -EOPNOTSUPP);
1061         OBD_COUNTER_INCREMENT(obd, pool_add);
1062
1063         rc = OBP(obd, pool_add)(obd, poolname, ostname);
1064         return rc;
1065 }
1066
1067 static inline int obd_pool_rem(struct obd_device *obd, char *poolname, char *ostname)
1068 {
1069         int rc;
1070
1071         OBD_CHECK_DT_OP(obd, pool_rem, -EOPNOTSUPP);
1072         OBD_COUNTER_INCREMENT(obd, pool_rem);
1073
1074         rc = OBP(obd, pool_rem)(obd, poolname, ostname);
1075         return rc;
1076 }
1077
1078 static inline void obd_getref(struct obd_device *obd)
1079 {
1080         if (OBT(obd) && OBP(obd, getref)) {
1081                 OBD_COUNTER_INCREMENT(obd, getref);
1082                 OBP(obd, getref)(obd);
1083         }
1084 }
1085
1086 static inline void obd_putref(struct obd_device *obd)
1087 {
1088         if (OBT(obd) && OBP(obd, putref)) {
1089                 OBD_COUNTER_INCREMENT(obd, putref);
1090                 OBP(obd, putref)(obd);
1091         }
1092 }
1093
1094 static inline int obd_init_export(struct obd_export *exp)
1095 {
1096         int rc = 0;
1097
1098         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
1099             OBP((exp)->exp_obd, init_export))
1100                 rc = OBP(exp->exp_obd, init_export)(exp);
1101         return rc;
1102 }
1103
1104 static inline int obd_destroy_export(struct obd_export *exp)
1105 {
1106         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
1107             OBP((exp)->exp_obd, destroy_export))
1108                 OBP(exp->exp_obd, destroy_export)(exp);
1109         return 0;
1110 }
1111
1112 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1113  * If the cache is older than @max_age we will get a new value from the
1114  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1115 static inline int obd_statfs_async(struct obd_export *exp,
1116                                    struct obd_info *oinfo,
1117                                    __u64 max_age,
1118                                    struct ptlrpc_request_set *rqset)
1119 {
1120         int rc = 0;
1121         struct obd_device *obd;
1122
1123         if (exp == NULL || exp->exp_obd == NULL)
1124                 return -EINVAL;
1125
1126         obd = exp->exp_obd;
1127         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1128         OBD_COUNTER_INCREMENT(obd, statfs);
1129
1130         CDEBUG(D_SUPER, "%s: osfs %p age %llu, max_age %llu\n",
1131                obd->obd_name, &obd->obd_osfs, obd->obd_osfs_age, max_age);
1132         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1133                 rc = OBP(obd, statfs_async)(exp, oinfo, max_age, rqset);
1134         } else {
1135                 CDEBUG(D_SUPER,
1136                        "%s: use %p cache blocks %llu/%llu objects %llu/%llu\n",
1137                        obd->obd_name, &obd->obd_osfs,
1138                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1139                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1140                 spin_lock(&obd->obd_osfs_lock);
1141                 memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
1142                 spin_unlock(&obd->obd_osfs_lock);
1143                 oinfo->oi_flags |= OBD_STATFS_FROM_CACHE;
1144                 if (oinfo->oi_cb_up)
1145                         oinfo->oi_cb_up(oinfo, 0);
1146         }
1147         return rc;
1148 }
1149
1150 static inline int obd_statfs_rqset(struct obd_export *exp,
1151                                    struct obd_statfs *osfs, __u64 max_age,
1152                                    __u32 flags)
1153 {
1154         struct ptlrpc_request_set *set = NULL;
1155         struct obd_info oinfo = { { { 0 } } };
1156         int rc = 0;
1157
1158         set =  ptlrpc_prep_set();
1159         if (set == NULL)
1160                 return -ENOMEM;
1161
1162         oinfo.oi_osfs = osfs;
1163         oinfo.oi_flags = flags;
1164         rc = obd_statfs_async(exp, &oinfo, max_age, set);
1165         if (rc == 0)
1166                 rc = ptlrpc_set_wait(set);
1167         ptlrpc_set_destroy(set);
1168         return rc;
1169 }
1170
1171 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1172  * If the cache is older than @max_age we will get a new value from the
1173  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1174 static inline int obd_statfs(const struct lu_env *env, struct obd_export *exp,
1175                              struct obd_statfs *osfs, __u64 max_age,
1176                              __u32 flags)
1177 {
1178         int rc = 0;
1179         struct obd_device *obd = exp->exp_obd;
1180
1181         if (obd == NULL)
1182                 return -EINVAL;
1183
1184         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1185         OBD_COUNTER_INCREMENT(obd, statfs);
1186
1187         CDEBUG(D_SUPER, "osfs %llu, max_age %llu\n",
1188                obd->obd_osfs_age, max_age);
1189         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1190                 rc = OBP(obd, statfs)(env, exp, osfs, max_age, flags);
1191                 if (rc == 0) {
1192                         spin_lock(&obd->obd_osfs_lock);
1193                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
1194                         obd->obd_osfs_age = cfs_time_current_64();
1195                         spin_unlock(&obd->obd_osfs_lock);
1196                 }
1197         } else {
1198                 CDEBUG(D_SUPER, "%s: use %p cache blocks %llu/%llu objects %llu/%llu\n",
1199                        obd->obd_name, &obd->obd_osfs,
1200                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1201                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1202                 spin_lock(&obd->obd_osfs_lock);
1203                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
1204                 spin_unlock(&obd->obd_osfs_lock);
1205         }
1206         return rc;
1207 }
1208
1209 static inline int obd_preprw(const struct lu_env *env, int cmd,
1210                              struct obd_export *exp, struct obdo *oa,
1211                              int objcount, struct obd_ioobj *obj,
1212                              struct niobuf_remote *remote, int *pages,
1213                              struct niobuf_local *local,
1214                              struct obd_trans_info *oti,
1215                              struct lustre_capa *capa)
1216 {
1217         int rc;
1218
1219         EXP_CHECK_DT_OP(exp, preprw);
1220         EXP_COUNTER_INCREMENT(exp, preprw);
1221
1222         rc = OBP(exp->exp_obd, preprw)(env, cmd, exp, oa, objcount, obj, remote,
1223                                        pages, local, oti, capa);
1224         return rc;
1225 }
1226
1227 static inline int obd_commitrw(const struct lu_env *env, int cmd,
1228                                struct obd_export *exp, struct obdo *oa,
1229                                int objcount, struct obd_ioobj *obj,
1230                                struct niobuf_remote *rnb, int pages,
1231                                struct niobuf_local *local,
1232                                struct obd_trans_info *oti, int rc)
1233 {
1234         EXP_CHECK_DT_OP(exp, commitrw);
1235         EXP_COUNTER_INCREMENT(exp, commitrw);
1236
1237         rc = OBP(exp->exp_obd, commitrw)(env, cmd, exp, oa, objcount, obj,
1238                                          rnb, pages, local, oti, rc);
1239         return rc;
1240 }
1241
1242 static inline int obd_adjust_kms(struct obd_export *exp,
1243                                  struct lov_stripe_md *lsm, u64 size,
1244                                  int shrink)
1245 {
1246         int rc;
1247
1248         EXP_CHECK_DT_OP(exp, adjust_kms);
1249         EXP_COUNTER_INCREMENT(exp, adjust_kms);
1250
1251         rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
1252         return rc;
1253 }
1254
1255 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1256                                 int len, void *karg, void *uarg)
1257 {
1258         int rc;
1259
1260         EXP_CHECK_DT_OP(exp, iocontrol);
1261         EXP_COUNTER_INCREMENT(exp, iocontrol);
1262
1263         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1264         return rc;
1265 }
1266
1267 static inline int obd_find_cbdata(struct obd_export *exp,
1268                                   struct lov_stripe_md *lsm,
1269                                   ldlm_iterator_t it, void *data)
1270 {
1271         int rc;
1272
1273         EXP_CHECK_DT_OP(exp, find_cbdata);
1274         EXP_COUNTER_INCREMENT(exp, find_cbdata);
1275
1276         rc = OBP(exp->exp_obd, find_cbdata)(exp, lsm, it, data);
1277         return rc;
1278 }
1279
1280 static inline void obd_import_event(struct obd_device *obd,
1281                                     struct obd_import *imp,
1282                                     enum obd_import_event event)
1283 {
1284         if (!obd) {
1285                 CERROR("NULL device\n");
1286                 return;
1287         }
1288         if (obd->obd_set_up && OBP(obd, import_event)) {
1289                 OBD_COUNTER_INCREMENT(obd, import_event);
1290                 OBP(obd, import_event)(obd, imp, event);
1291         }
1292 }
1293
1294 static inline int obd_notify(struct obd_device *obd,
1295                              struct obd_device *watched,
1296                              enum obd_notify_event ev,
1297                              void *data)
1298 {
1299         int rc;
1300
1301         rc = obd_check_dev(obd);
1302         if (rc)
1303                 return rc;
1304
1305         /* the check for async_recov is a complete hack - I'm hereby
1306            overloading the meaning to also mean "this was called from
1307            mds_postsetup".  I know that my mds is able to handle notifies
1308            by this point, and it needs to get them to execute mds_postrecov. */
1309         if (!obd->obd_set_up && !obd->obd_async_recov) {
1310                 CDEBUG(D_HA, "obd %s not set up\n", obd->obd_name);
1311                 return -EINVAL;
1312         }
1313
1314         if (!OBP(obd, notify)) {
1315                 CDEBUG(D_HA, "obd %s has no notify handler\n", obd->obd_name);
1316                 return -ENOSYS;
1317         }
1318
1319         OBD_COUNTER_INCREMENT(obd, notify);
1320         rc = OBP(obd, notify)(obd, watched, ev, data);
1321         return rc;
1322 }
1323
1324 static inline int obd_notify_observer(struct obd_device *observer,
1325                                       struct obd_device *observed,
1326                                       enum obd_notify_event ev,
1327                                       void *data)
1328 {
1329         int rc1;
1330         int rc2;
1331
1332         struct obd_notify_upcall *onu;
1333
1334         if (observer->obd_observer)
1335                 rc1 = obd_notify(observer->obd_observer, observed, ev, data);
1336         else
1337                 rc1 = 0;
1338         /*
1339          * Also, call non-obd listener, if any
1340          */
1341         onu = &observer->obd_upcall;
1342         if (onu->onu_upcall != NULL)
1343                 rc2 = onu->onu_upcall(observer, observed, ev,
1344                                       onu->onu_owner, NULL);
1345         else
1346                 rc2 = 0;
1347
1348         return rc1 ? rc1 : rc2;
1349 }
1350
1351 static inline int obd_quotacheck(struct obd_export *exp,
1352                                  struct obd_quotactl *oqctl)
1353 {
1354         int rc;
1355
1356         EXP_CHECK_DT_OP(exp, quotacheck);
1357         EXP_COUNTER_INCREMENT(exp, quotacheck);
1358
1359         rc = OBP(exp->exp_obd, quotacheck)(exp->exp_obd, exp, oqctl);
1360         return rc;
1361 }
1362
1363 static inline int obd_quotactl(struct obd_export *exp,
1364                                struct obd_quotactl *oqctl)
1365 {
1366         int rc;
1367
1368         EXP_CHECK_DT_OP(exp, quotactl);
1369         EXP_COUNTER_INCREMENT(exp, quotactl);
1370
1371         rc = OBP(exp->exp_obd, quotactl)(exp->exp_obd, exp, oqctl);
1372         return rc;
1373 }
1374
1375 static inline int obd_health_check(const struct lu_env *env,
1376                                    struct obd_device *obd)
1377 {
1378         /* returns: 0 on healthy
1379          *       >0 on unhealthy + reason code/flag
1380          *          however the only supported reason == 1 right now
1381          *          We'll need to define some better reasons
1382          *          or flags in the future.
1383          *       <0 on error
1384          */
1385         int rc;
1386
1387         /* don't use EXP_CHECK_DT_OP, because NULL method is normal here */
1388         if (obd == NULL || !OBT(obd)) {
1389                 CERROR("cleaned up obd\n");
1390                 return -EOPNOTSUPP;
1391         }
1392         if (!obd->obd_set_up || obd->obd_stopping)
1393                 return 0;
1394         if (!OBP(obd, health_check))
1395                 return 0;
1396
1397         rc = OBP(obd, health_check)(env, obd);
1398         return rc;
1399 }
1400
1401 static inline int obd_register_observer(struct obd_device *obd,
1402                                         struct obd_device *observer)
1403 {
1404         int rc;
1405
1406         rc = obd_check_dev(obd);
1407         if (rc)
1408                 return rc;
1409         down_write(&obd->obd_observer_link_sem);
1410         if (obd->obd_observer && observer) {
1411                 up_write(&obd->obd_observer_link_sem);
1412                 return -EALREADY;
1413         }
1414         obd->obd_observer = observer;
1415         up_write(&obd->obd_observer_link_sem);
1416         return 0;
1417 }
1418
1419 #if 0
1420 static inline int obd_register_page_removal_cb(struct obd_export *exp,
1421                                                obd_page_removal_cb_t cb,
1422                                                obd_pin_extent_cb pin_cb)
1423 {
1424         int rc;
1425
1426         OBD_CHECK_DT_OP(exp->exp_obd, register_page_removal_cb, 0);
1427         OBD_COUNTER_INCREMENT(exp->exp_obd, register_page_removal_cb);
1428
1429         rc = OBP(exp->exp_obd, register_page_removal_cb)(exp, cb, pin_cb);
1430         return rc;
1431 }
1432
1433 static inline int obd_unregister_page_removal_cb(struct obd_export *exp,
1434                                                  obd_page_removal_cb_t cb)
1435 {
1436         int rc;
1437
1438         OBD_CHECK_DT_OP(exp->exp_obd, unregister_page_removal_cb, 0);
1439         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_page_removal_cb);
1440
1441         rc = OBP(exp->exp_obd, unregister_page_removal_cb)(exp, cb);
1442         return rc;
1443 }
1444
1445 static inline int obd_register_lock_cancel_cb(struct obd_export *exp,
1446                                               obd_lock_cancel_cb cb)
1447 {
1448         int rc;
1449
1450         OBD_CHECK_DT_OP(exp->exp_obd, register_lock_cancel_cb, 0);
1451         OBD_COUNTER_INCREMENT(exp->exp_obd, register_lock_cancel_cb);
1452
1453         rc = OBP(exp->exp_obd, register_lock_cancel_cb)(exp, cb);
1454         return rc;
1455 }
1456
1457 static inline int obd_unregister_lock_cancel_cb(struct obd_export *exp,
1458                                                  obd_lock_cancel_cb cb)
1459 {
1460         int rc;
1461
1462         OBD_CHECK_DT_OP(exp->exp_obd, unregister_lock_cancel_cb, 0);
1463         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_lock_cancel_cb);
1464
1465         rc = OBP(exp->exp_obd, unregister_lock_cancel_cb)(exp, cb);
1466         return rc;
1467 }
1468 #endif
1469
1470 /* metadata helpers */
1471 static inline int md_getstatus(struct obd_export *exp,
1472                                struct lu_fid *fid, struct obd_capa **pc)
1473 {
1474         int rc;
1475
1476         EXP_CHECK_MD_OP(exp, getstatus);
1477         EXP_MD_COUNTER_INCREMENT(exp, getstatus);
1478         rc = MDP(exp->exp_obd, getstatus)(exp, fid, pc);
1479         return rc;
1480 }
1481
1482 static inline int md_getattr(struct obd_export *exp, struct md_op_data *op_data,
1483                              struct ptlrpc_request **request)
1484 {
1485         int rc;
1486
1487         EXP_CHECK_MD_OP(exp, getattr);
1488         EXP_MD_COUNTER_INCREMENT(exp, getattr);
1489         rc = MDP(exp->exp_obd, getattr)(exp, op_data, request);
1490         return rc;
1491 }
1492
1493 static inline int md_null_inode(struct obd_export *exp,
1494                                    const struct lu_fid *fid)
1495 {
1496         int rc;
1497
1498         EXP_CHECK_MD_OP(exp, null_inode);
1499         EXP_MD_COUNTER_INCREMENT(exp, null_inode);
1500         rc = MDP(exp->exp_obd, null_inode)(exp, fid);
1501         return rc;
1502 }
1503
1504 static inline int md_find_cbdata(struct obd_export *exp,
1505                                  const struct lu_fid *fid,
1506                                  ldlm_iterator_t it, void *data)
1507 {
1508         int rc;
1509
1510         EXP_CHECK_MD_OP(exp, find_cbdata);
1511         EXP_MD_COUNTER_INCREMENT(exp, find_cbdata);
1512         rc = MDP(exp->exp_obd, find_cbdata)(exp, fid, it, data);
1513         return rc;
1514 }
1515
1516 static inline int md_close(struct obd_export *exp, struct md_op_data *op_data,
1517                            struct md_open_data *mod,
1518                            struct ptlrpc_request **request)
1519 {
1520         int rc;
1521
1522         EXP_CHECK_MD_OP(exp, close);
1523         EXP_MD_COUNTER_INCREMENT(exp, close);
1524         rc = MDP(exp->exp_obd, close)(exp, op_data, mod, request);
1525         return rc;
1526 }
1527
1528 static inline int md_create(struct obd_export *exp, struct md_op_data *op_data,
1529                             const void *data, int datalen, int mode, __u32 uid,
1530                             __u32 gid, cfs_cap_t cap_effective, __u64 rdev,
1531                             struct ptlrpc_request **request)
1532 {
1533         int rc;
1534
1535         EXP_CHECK_MD_OP(exp, create);
1536         EXP_MD_COUNTER_INCREMENT(exp, create);
1537         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1538                                        uid, gid, cap_effective, rdev, request);
1539         return rc;
1540 }
1541
1542 static inline int md_done_writing(struct obd_export *exp,
1543                                   struct md_op_data *op_data,
1544                                   struct md_open_data *mod)
1545 {
1546         int rc;
1547
1548         EXP_CHECK_MD_OP(exp, done_writing);
1549         EXP_MD_COUNTER_INCREMENT(exp, done_writing);
1550         rc = MDP(exp->exp_obd, done_writing)(exp, op_data, mod);
1551         return rc;
1552 }
1553
1554 static inline int md_enqueue(struct obd_export *exp,
1555                              struct ldlm_enqueue_info *einfo,
1556                              struct lookup_intent *it,
1557                              struct md_op_data *op_data,
1558                              struct lustre_handle *lockh,
1559                              void *lmm, int lmmsize,
1560                              struct ptlrpc_request **req,
1561                              __u64 extra_lock_flags)
1562 {
1563         int rc;
1564
1565         EXP_CHECK_MD_OP(exp, enqueue);
1566         EXP_MD_COUNTER_INCREMENT(exp, enqueue);
1567         rc = MDP(exp->exp_obd, enqueue)(exp, einfo, it, op_data, lockh,
1568                                         lmm, lmmsize, req, extra_lock_flags);
1569         return rc;
1570 }
1571
1572 static inline int md_getattr_name(struct obd_export *exp,
1573                                   struct md_op_data *op_data,
1574                                   struct ptlrpc_request **request)
1575 {
1576         int rc;
1577
1578         EXP_CHECK_MD_OP(exp, getattr_name);
1579         EXP_MD_COUNTER_INCREMENT(exp, getattr_name);
1580         rc = MDP(exp->exp_obd, getattr_name)(exp, op_data, request);
1581         return rc;
1582 }
1583
1584 static inline int md_intent_lock(struct obd_export *exp,
1585                                  struct md_op_data *op_data, void *lmm,
1586                                  int lmmsize, struct lookup_intent *it,
1587                                  int lookup_flags, struct ptlrpc_request **reqp,
1588                                  ldlm_blocking_callback cb_blocking,
1589                                  __u64 extra_lock_flags)
1590 {
1591         int rc;
1592
1593         EXP_CHECK_MD_OP(exp, intent_lock);
1594         EXP_MD_COUNTER_INCREMENT(exp, intent_lock);
1595         rc = MDP(exp->exp_obd, intent_lock)(exp, op_data, lmm, lmmsize,
1596                                             it, lookup_flags, reqp, cb_blocking,
1597                                             extra_lock_flags);
1598         return rc;
1599 }
1600
1601 static inline int md_link(struct obd_export *exp, struct md_op_data *op_data,
1602                           struct ptlrpc_request **request)
1603 {
1604         int rc;
1605
1606         EXP_CHECK_MD_OP(exp, link);
1607         EXP_MD_COUNTER_INCREMENT(exp, link);
1608         rc = MDP(exp->exp_obd, link)(exp, op_data, request);
1609         return rc;
1610 }
1611
1612 static inline int md_rename(struct obd_export *exp, struct md_op_data *op_data,
1613                             const char *old, int oldlen, const char *new,
1614                             int newlen, struct ptlrpc_request **request)
1615 {
1616         int rc;
1617
1618         EXP_CHECK_MD_OP(exp, rename);
1619         EXP_MD_COUNTER_INCREMENT(exp, rename);
1620         rc = MDP(exp->exp_obd, rename)(exp, op_data, old, oldlen, new,
1621                                        newlen, request);
1622         return rc;
1623 }
1624
1625 static inline int md_is_subdir(struct obd_export *exp,
1626                                const struct lu_fid *pfid,
1627                                const struct lu_fid *cfid,
1628                                struct ptlrpc_request **request)
1629 {
1630         int rc;
1631
1632         EXP_CHECK_MD_OP(exp, is_subdir);
1633         EXP_MD_COUNTER_INCREMENT(exp, is_subdir);
1634         rc = MDP(exp->exp_obd, is_subdir)(exp, pfid, cfid, request);
1635         return rc;
1636 }
1637
1638 static inline int md_setattr(struct obd_export *exp, struct md_op_data *op_data,
1639                              void *ea, int ealen, void *ea2, int ea2len,
1640                              struct ptlrpc_request **request,
1641                              struct md_open_data **mod)
1642 {
1643         int rc;
1644
1645         EXP_CHECK_MD_OP(exp, setattr);
1646         EXP_MD_COUNTER_INCREMENT(exp, setattr);
1647         rc = MDP(exp->exp_obd, setattr)(exp, op_data, ea, ealen,
1648                                         ea2, ea2len, request, mod);
1649         return rc;
1650 }
1651
1652 static inline int md_sync(struct obd_export *exp, const struct lu_fid *fid,
1653                           struct obd_capa *oc, struct ptlrpc_request **request)
1654 {
1655         int rc;
1656
1657         EXP_CHECK_MD_OP(exp, sync);
1658         EXP_MD_COUNTER_INCREMENT(exp, sync);
1659         rc = MDP(exp->exp_obd, sync)(exp, fid, oc, request);
1660         return rc;
1661 }
1662
1663 static inline int md_readpage(struct obd_export *exp, struct md_op_data *opdata,
1664                               struct page **pages,
1665                               struct ptlrpc_request **request)
1666 {
1667         int rc;
1668
1669         EXP_CHECK_MD_OP(exp, readpage);
1670         EXP_MD_COUNTER_INCREMENT(exp, readpage);
1671         rc = MDP(exp->exp_obd, readpage)(exp, opdata, pages, request);
1672         return rc;
1673 }
1674
1675 static inline int md_unlink(struct obd_export *exp, struct md_op_data *op_data,
1676                             struct ptlrpc_request **request)
1677 {
1678         int rc;
1679
1680         EXP_CHECK_MD_OP(exp, unlink);
1681         EXP_MD_COUNTER_INCREMENT(exp, unlink);
1682         rc = MDP(exp->exp_obd, unlink)(exp, op_data, request);
1683         return rc;
1684 }
1685
1686 static inline int md_get_lustre_md(struct obd_export *exp,
1687                                    struct ptlrpc_request *req,
1688                                    struct obd_export *dt_exp,
1689                                    struct obd_export *md_exp,
1690                                    struct lustre_md *md)
1691 {
1692         EXP_CHECK_MD_OP(exp, get_lustre_md);
1693         EXP_MD_COUNTER_INCREMENT(exp, get_lustre_md);
1694         return MDP(exp->exp_obd, get_lustre_md)(exp, req, dt_exp, md_exp, md);
1695 }
1696
1697 static inline int md_free_lustre_md(struct obd_export *exp,
1698                                     struct lustre_md *md)
1699 {
1700         EXP_CHECK_MD_OP(exp, free_lustre_md);
1701         EXP_MD_COUNTER_INCREMENT(exp, free_lustre_md);
1702         return MDP(exp->exp_obd, free_lustre_md)(exp, md);
1703 }
1704
1705 static inline int md_setxattr(struct obd_export *exp,
1706                               const struct lu_fid *fid, struct obd_capa *oc,
1707                               u64 valid, const char *name,
1708                               const char *input, int input_size,
1709                               int output_size, int flags, __u32 suppgid,
1710                               struct ptlrpc_request **request)
1711 {
1712         EXP_CHECK_MD_OP(exp, setxattr);
1713         EXP_MD_COUNTER_INCREMENT(exp, setxattr);
1714         return MDP(exp->exp_obd, setxattr)(exp, fid, oc, valid, name, input,
1715                                            input_size, output_size, flags,
1716                                            suppgid, request);
1717 }
1718
1719 static inline int md_getxattr(struct obd_export *exp,
1720                               const struct lu_fid *fid, struct obd_capa *oc,
1721                               u64 valid, const char *name,
1722                               const char *input, int input_size,
1723                               int output_size, int flags,
1724                               struct ptlrpc_request **request)
1725 {
1726         EXP_CHECK_MD_OP(exp, getxattr);
1727         EXP_MD_COUNTER_INCREMENT(exp, getxattr);
1728         return MDP(exp->exp_obd, getxattr)(exp, fid, oc, valid, name, input,
1729                                            input_size, output_size, flags,
1730                                            request);
1731 }
1732
1733 static inline int md_set_open_replay_data(struct obd_export *exp,
1734                                           struct obd_client_handle *och,
1735                                           struct lookup_intent *it)
1736 {
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         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
1746         EXP_MD_COUNTER_INCREMENT(exp, clear_open_replay_data);
1747         return MDP(exp->exp_obd, clear_open_replay_data)(exp, och);
1748 }
1749
1750 static inline int md_set_lock_data(struct obd_export *exp,
1751                                    __u64 *lockh, void *data, __u64 *bits)
1752 {
1753         EXP_CHECK_MD_OP(exp, set_lock_data);
1754         EXP_MD_COUNTER_INCREMENT(exp, set_lock_data);
1755         return MDP(exp->exp_obd, set_lock_data)(exp, lockh, data, bits);
1756 }
1757
1758 static inline int md_cancel_unused(struct obd_export *exp,
1759                                    const struct lu_fid *fid,
1760                                    ldlm_policy_data_t *policy,
1761                                    ldlm_mode_t mode,
1762                                    ldlm_cancel_flags_t flags,
1763                                    void *opaque)
1764 {
1765         int rc;
1766
1767         EXP_CHECK_MD_OP(exp, cancel_unused);
1768         EXP_MD_COUNTER_INCREMENT(exp, cancel_unused);
1769
1770         rc = MDP(exp->exp_obd, cancel_unused)(exp, fid, policy, mode,
1771                                               flags, opaque);
1772         return rc;
1773 }
1774
1775 static inline ldlm_mode_t md_lock_match(struct obd_export *exp, __u64 flags,
1776                                         const struct lu_fid *fid,
1777                                         ldlm_type_t type,
1778                                         ldlm_policy_data_t *policy,
1779                                         ldlm_mode_t mode,
1780                                         struct lustre_handle *lockh)
1781 {
1782         EXP_CHECK_MD_OP(exp, lock_match);
1783         EXP_MD_COUNTER_INCREMENT(exp, lock_match);
1784         return MDP(exp->exp_obd, lock_match)(exp, flags, fid, type,
1785                                              policy, mode, lockh);
1786 }
1787
1788 static inline int md_init_ea_size(struct obd_export *exp, int easize,
1789                                   int def_asize, int cookiesize,
1790                                   int def_cookiesize)
1791 {
1792         EXP_CHECK_MD_OP(exp, init_ea_size);
1793         EXP_MD_COUNTER_INCREMENT(exp, init_ea_size);
1794         return MDP(exp->exp_obd, init_ea_size)(exp, easize, def_asize,
1795                                                cookiesize, def_cookiesize);
1796 }
1797
1798 static inline int md_get_remote_perm(struct obd_export *exp,
1799                                      const struct lu_fid *fid,
1800                                      struct obd_capa *oc, __u32 suppgid,
1801                                      struct ptlrpc_request **request)
1802 {
1803         EXP_CHECK_MD_OP(exp, get_remote_perm);
1804         EXP_MD_COUNTER_INCREMENT(exp, get_remote_perm);
1805         return MDP(exp->exp_obd, get_remote_perm)(exp, fid, oc, suppgid,
1806                                                   request);
1807 }
1808
1809 static inline int md_renew_capa(struct obd_export *exp, struct obd_capa *ocapa,
1810                                 renew_capa_cb_t cb)
1811 {
1812         int rc;
1813
1814         EXP_CHECK_MD_OP(exp, renew_capa);
1815         EXP_MD_COUNTER_INCREMENT(exp, renew_capa);
1816         rc = MDP(exp->exp_obd, renew_capa)(exp, ocapa, cb);
1817         return rc;
1818 }
1819
1820 static inline int md_unpack_capa(struct obd_export *exp,
1821                                  struct ptlrpc_request *req,
1822                                  const struct req_msg_field *field,
1823                                  struct obd_capa **oc)
1824 {
1825         int rc;
1826
1827         EXP_CHECK_MD_OP(exp, unpack_capa);
1828         EXP_MD_COUNTER_INCREMENT(exp, unpack_capa);
1829         rc = MDP(exp->exp_obd, unpack_capa)(exp, req, field, oc);
1830         return rc;
1831 }
1832
1833 static inline int md_intent_getattr_async(struct obd_export *exp,
1834                                           struct md_enqueue_info *minfo,
1835                                           struct ldlm_enqueue_info *einfo)
1836 {
1837         int rc;
1838
1839         EXP_CHECK_MD_OP(exp, intent_getattr_async);
1840         EXP_MD_COUNTER_INCREMENT(exp, intent_getattr_async);
1841         rc = MDP(exp->exp_obd, intent_getattr_async)(exp, minfo, einfo);
1842         return rc;
1843 }
1844
1845 static inline int md_revalidate_lock(struct obd_export *exp,
1846                                      struct lookup_intent *it,
1847                                      struct lu_fid *fid, __u64 *bits)
1848 {
1849         int rc;
1850
1851         EXP_CHECK_MD_OP(exp, revalidate_lock);
1852         EXP_MD_COUNTER_INCREMENT(exp, revalidate_lock);
1853         rc = MDP(exp->exp_obd, revalidate_lock)(exp, it, fid, bits);
1854         return rc;
1855 }
1856
1857
1858 /* OBD Metadata Support */
1859
1860 extern int obd_init_caches(void);
1861 extern void obd_cleanup_caches(void);
1862
1863 /* support routines */
1864 extern struct kmem_cache *obdo_cachep;
1865
1866 #define OBDO_ALLOC(ptr)                                                \
1867 do {                                                                      \
1868         OBD_SLAB_ALLOC_PTR_GFP((ptr), obdo_cachep, GFP_NOFS);             \
1869 } while (0)
1870
1871 #define OBDO_FREE(ptr)                                                  \
1872 do {                                                                      \
1873         OBD_SLAB_FREE_PTR((ptr), obdo_cachep);                          \
1874 } while (0)
1875
1876
1877 static inline void obdo2fid(struct obdo *oa, struct lu_fid *fid)
1878 {
1879         /* something here */
1880 }
1881
1882 static inline void fid2obdo(struct lu_fid *fid, struct obdo *oa)
1883 {
1884         /* something here */
1885 }
1886
1887 typedef int (*register_lwp_cb)(void *data);
1888
1889 struct lwp_register_item {
1890         struct obd_export **lri_exp;
1891         register_lwp_cb     lri_cb_func;
1892         void               *lri_cb_data;
1893         struct list_head            lri_list;
1894         char                lri_name[MTI_NAME_MAXLEN];
1895 };
1896
1897 /* I'm as embarrassed about this as you are.
1898  *
1899  * <shaver> // XXX do not look into _superhack with remaining eye
1900  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
1901 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
1902
1903 /* obd_mount.c */
1904
1905 /* sysctl.c */
1906 extern void obd_sysctl_init (void);
1907 extern void obd_sysctl_clean (void);
1908
1909 /* uuid.c  */
1910 typedef __u8 class_uuid_t[16];
1911 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
1912
1913 /* lustre_peer.c    */
1914 int lustre_uuid_to_peer(const char *uuid, lnet_nid_t *peer_nid, int index);
1915 int class_add_uuid(const char *uuid, __u64 nid);
1916 int class_del_uuid (const char *uuid);
1917 int class_check_uuid(struct obd_uuid *uuid, __u64 nid);
1918 void class_init_uuidlist(void);
1919 void class_exit_uuidlist(void);
1920
1921 /* class_obd.c */
1922 extern char obd_jobid_node[];
1923 extern struct miscdevice obd_psdev;
1924 extern spinlock_t obd_types_lock;
1925
1926 /* prng.c */
1927 #define ll_generate_random_uuid(uuid_out) cfs_get_random_bytes(uuid_out, sizeof(class_uuid_t))
1928
1929 #endif /* __LINUX_OBD_CLASS_H */