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 struct obd_export *class_conn2export(struct lustre_handle *);
  76 int class_register_type(struct obd_ops *, struct md_ops *,
  77                         struct lprocfs_vars *, const char *nm,
  78                         struct lu_device_type *ldt);
  79 int class_unregister_type(const char *nm);
  80
  81 struct obd_device *class_newdev(const char *type_name, const char *name);
  82 void class_release_dev(struct obd_device *obd);
  83
  84 int class_name2dev(const char *name);
  85 struct obd_device *class_name2obd(const char *name);
  86 int class_uuid2dev(struct obd_uuid *uuid);
  87 struct obd_device *class_uuid2obd(struct obd_uuid *uuid);
  88 void class_obd_list(void);
  89 struct obd_device *class_find_client_obd(struct obd_uuid *tgt_uuid,
  90                                           const char *typ_name,
  91                                           struct obd_uuid *grp_uuid);
  92 struct obd_device *class_devices_in_group(struct obd_uuid *grp_uuid,
  93                                            int *next);
  94 struct obd_device *class_num2obd(int num);
  95 int get_devices_count(void);
  96
  97 int class_notify_sptlrpc_conf(const char *fsname, int namelen);
  98
  99 char *obd_export_nid2str(struct obd_export *exp);
 100
 101 int obd_export_evict_by_nid(struct obd_device *obd, const char *nid);
 102 int obd_export_evict_by_uuid(struct obd_device *obd, const char *uuid);
 103 int obd_connect_flags2str(char *page, int count, __u64 flags, char *sep);
 104
 105 int obd_zombie_impexp_init(void);
 106 void obd_zombie_impexp_stop(void);
 107 void obd_zombie_impexp_cull(void);
 108 void obd_zombie_barrier(void);
 109 void obd_exports_barrier(struct obd_device *obd);
 110 int kuc_len(int payload_len);
 111 struct kuc_hdr *kuc_ptr(void *p);
 112 int kuc_ispayload(void *p);
 113 void *kuc_alloc(int payload_len, int transport, int type);
 114 void kuc_free(void *p, int payload_len);
 115
 116 struct llog_handle;
 117 struct llog_rec_hdr;
 118 typedef int (*llog_cb_t)(const struct lu_env *, struct llog_handle *,
 119                          struct llog_rec_hdr *, void *);
 120 /* obd_config.c */
 121 struct lustre_cfg *lustre_cfg_rename(struct lustre_cfg *cfg,
 122                                      const char *new_name);
 123 int class_process_config(struct lustre_cfg *lcfg);
 124 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
 125                              struct lustre_cfg *lcfg, void *data);
 126 int class_attach(struct lustre_cfg *lcfg);
 127 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
 128 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg);
 129 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg);
 130 struct obd_device *class_incref(struct obd_device *obd,
 131                                 const char *scope, const void *source);
 132 void class_decref(struct obd_device *obd,
 133                   const char *scope, const void *source);
 134 void dump_exports(struct obd_device *obd, int locks);
 135 int class_config_llog_handler(const struct lu_env *env,
 136                               struct llog_handle *handle,
 137                               struct llog_rec_hdr *rec, void *data);
 138 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg);
 139 int class_add_uuid(const char *uuid, __u64 nid);
 140
 141 /*obdecho*/
 142 #if defined (CONFIG_PROC_FS)
 143 extern void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars);
 144 #else
 145 static inline void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars)
 146 {
 147         memset(lvars, 0, sizeof(*lvars));
 148 }
 149 #endif
 150
 151 #define CFG_F_START     0x01   /* Set when we start updating from a log */
 152 #define CFG_F_MARKER    0x02   /* We are within a maker */
 153 #define CFG_F_SKIP      0x04   /* We should ignore this cfg command */
 154 #define CFG_F_COMPAT146 0x08   /* Allow old-style logs */
 155 #define CFG_F_EXCLUDE   0x10   /* OST exclusion list */
 156
 157 /* Passed as data param to class_config_parse_llog */
 158 struct config_llog_instance {
 159         char           *cfg_obdname;
 160         void           *cfg_instance;
 161         struct super_block *cfg_sb;
 162         struct obd_uuid     cfg_uuid;
 163         llog_cb_t           cfg_callback;
 164         int              cfg_last_idx; /* for partial llog processing */
 165         int              cfg_flags;
 166 };
 167 int class_config_parse_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
 168                             char *name, struct config_llog_instance *cfg);
 169 int class_config_dump_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
 170                            char *name, struct config_llog_instance *cfg);
 171
 172 enum {
 173         CONFIG_T_CONFIG  = 0,
 174         CONFIG_T_SPTLRPC = 1,
 175         CONFIG_T_RECOVER = 2,
 176         CONFIG_T_PARAMS  = 3,
 177         CONFIG_T_MAX     = 4
 178 };
 179
 180 #define PARAMS_FILENAME "params"
 181 #define LCTL_UPCALL     "lctl"
 182
 183 /* list of active configuration logs  */
 184 struct config_llog_data {
 185         struct ldlm_res_id        cld_resid;
 186         struct config_llog_instance cld_cfg;
 187         struct list_head                  cld_list_chain;
 188         atomic_t                cld_refcount;
 189         struct config_llog_data    *cld_sptlrpc;/* depended sptlrpc log */
 190         struct config_llog_data    *cld_params; /* common parameters log */
 191         struct config_llog_data    *cld_recover;/* imperative recover log */
 192         struct obd_export         *cld_mgcexp;
 193         struct mutex                cld_lock;
 194         int                      cld_type;
 195         unsigned int            cld_stopping:1, /* we were told to stop
 196                                                      * watching */
 197                                     cld_lostlock:1; /* lock not requeued */
 198         char                    cld_logname[0];
 199 };
 200
 201 struct lustre_profile {
 202         struct list_head       lp_list;
 203         char        *lp_profile;
 204         char        *lp_dt;
 205         char        *lp_md;
 206 };
 207
 208 struct lustre_profile *class_get_profile(const char *prof);
 209 void class_del_profile(const char *prof);
 210 void class_del_profiles(void);
 211
 212 #if LUSTRE_TRACKS_LOCK_EXP_REFS
 213
 214 void __class_export_add_lock_ref(struct obd_export *, struct ldlm_lock *);
 215 void __class_export_del_lock_ref(struct obd_export *, struct ldlm_lock *);
 216 extern void (*class_export_dump_hook)(struct obd_export *);
 217
 218 #else
 219
 220 #define __class_export_add_lock_ref(exp, lock)       do {} while (0)
 221 #define __class_export_del_lock_ref(exp, lock)       do {} while (0)
 222
 223 #endif
 224
 225 #define class_export_rpc_inc(exp)                                      \
 226 ({                                                                    \
 227         atomic_inc(&(exp)->exp_rpc_count);                        \
 228         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",    \
 229                (exp), atomic_read(&(exp)->exp_rpc_count));        \
 230 })
 231
 232 #define class_export_rpc_dec(exp)                                      \
 233 ({                                                                    \
 234         LASSERT_ATOMIC_POS(&exp->exp_rpc_count);                        \
 235         atomic_dec(&(exp)->exp_rpc_count);                        \
 236         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",    \
 237                (exp), atomic_read(&(exp)->exp_rpc_count));        \
 238 })
 239
 240 #define class_export_lock_get(exp, lock)                                \
 241 ({                                                                    \
 242         atomic_inc(&(exp)->exp_locks_count);                    \
 243         __class_export_add_lock_ref(exp, lock);                  \
 244         CDEBUG(D_INFO, "lock GETting export %p : new locks_count %d\n", \
 245                (exp), atomic_read(&(exp)->exp_locks_count));    \
 246         class_export_get(exp);                                    \
 247 })
 248
 249 #define class_export_lock_put(exp, lock)                                \
 250 ({                                                                    \
 251         LASSERT_ATOMIC_POS(&exp->exp_locks_count);                    \
 252         atomic_dec(&(exp)->exp_locks_count);                    \
 253         __class_export_del_lock_ref(exp, lock);                  \
 254         CDEBUG(D_INFO, "lock PUTting export %p : new locks_count %d\n", \
 255                (exp), atomic_read(&(exp)->exp_locks_count));    \
 256         class_export_put(exp);                                    \
 257 })
 258
 259 #define class_export_cb_get(exp)                                        \
 260 ({                                                                    \
 261         atomic_inc(&(exp)->exp_cb_count);                          \
 262         CDEBUG(D_INFO, "callback GETting export %p : new cb_count %d\n",\
 263                (exp), atomic_read(&(exp)->exp_cb_count));          \
 264         class_export_get(exp);                                    \
 265 })
 266
 267 #define class_export_cb_put(exp)                                        \
 268 ({                                                                    \
 269         LASSERT_ATOMIC_POS(&exp->exp_cb_count);                  \
 270         atomic_dec(&(exp)->exp_cb_count);                          \
 271         CDEBUG(D_INFO, "callback PUTting export %p : new cb_count %d\n",\
 272                (exp), atomic_read(&(exp)->exp_cb_count));          \
 273         class_export_put(exp);                                    \
 274 })
 275
 276 /* genops.c */
 277 struct obd_export *class_export_get(struct obd_export *exp);
 278 void class_export_put(struct obd_export *exp);
 279 struct obd_export *class_new_export(struct obd_device *obddev,
 280                                     struct obd_uuid *cluuid);
 281 void class_unlink_export(struct obd_export *exp);
 282
 283 struct obd_import *class_import_get(struct obd_import *);
 284 void class_import_put(struct obd_import *);
 285 struct obd_import *class_new_import(struct obd_device *obd);
 286 void class_destroy_import(struct obd_import *exp);
 287
 288 struct obd_type *class_search_type(const char *name);
 289 struct obd_type *class_get_type(const char *name);
 290 void class_put_type(struct obd_type *type);
 291 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 292                   struct obd_uuid *cluuid);
 293 int class_disconnect(struct obd_export *exp);
 294 void class_fail_export(struct obd_export *exp);
 295 int class_connected_export(struct obd_export *exp);
 296 void class_disconnect_exports(struct obd_device *obddev);
 297 int class_manual_cleanup(struct obd_device *obd);
 298 void class_disconnect_stale_exports(struct obd_device *,
 299                                     int (*test_export)(struct obd_export *));
 300 static inline enum obd_option exp_flags_from_obd(struct obd_device *obd)
 301 {
 302         return ((obd->obd_fail ? OBD_OPT_FAILOVER : 0) |
 303                 (obd->obd_force ? OBD_OPT_FORCE : 0) |
 304                 (obd->obd_abort_recovery ? OBD_OPT_ABORT_RECOV : 0) |
 305                 0);
 306 }
 307
 308 struct inode;
 309 struct lu_attr;
 310 struct obdo;
 311 void obdo_from_la(struct obdo *dst, struct lu_attr *la, __u64 valid);
 312 void la_from_obdo(struct lu_attr *la, struct obdo *dst, u32 valid);
 313 void obdo_refresh_inode(struct inode *dst, struct obdo *src, u32 valid);
 314 void obdo_to_inode(struct inode *dst, struct obdo *src, u32 valid);
 315
 316 void obdo_cpy_md(struct obdo *dst, struct obdo *src, u32 valid);
 317 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
 318 void obdo_from_iattr(struct obdo *oa, struct iattr *attr,
 319                      unsigned int ia_valid);
 320 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, u32 valid);
 321 void md_from_obdo(struct md_op_data *op_data, struct obdo *oa, u32 valid);
 322 void obdo_from_md(struct obdo *oa, struct md_op_data *op_data,
 323                   unsigned int valid);
 324
 325 void obdo_cpu_to_le(struct obdo *dobdo, struct obdo *sobdo);
 326 void obdo_le_to_cpu(struct obdo *dobdo, struct obdo *sobdo);
 327
 328 #define OBT(dev)        (dev)->obd_type
 329 #define OBP(dev, op)    (dev)->obd_type->typ_dt_ops->o_ ## op
 330 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
 331 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 332
 333 /* Ensure obd_setup: used for cleanup which must be called
 334    while obd is stopping */
 335 #define OBD_CHECK_DEV(obd)                                    \
 336 do {                                                        \
 337         if (!(obd)) {                                      \
 338                 CERROR("NULL device\n");                        \
 339                 return -ENODEV;                         \
 340         }                                                      \
 341 } while (0)
 342
 343 /* ensure obd_setup and !obd_stopping */
 344 #define OBD_CHECK_DEV_ACTIVE(obd)                              \
 345 do {                                                        \
 346         OBD_CHECK_DEV(obd);                                  \
 347         if (!(obd)->obd_set_up || (obd)->obd_stopping) {        \
 348                 CERROR("Device %d not setup\n",          \
 349                        (obd)->obd_minor);                      \
 350                 return -ENODEV;                         \
 351         }                                                      \
 352 } while (0)
 353
 354
 355 #if defined (CONFIG_PROC_FS)
 356 #define OBD_COUNTER_OFFSET(op)                            \
 357         ((offsetof(struct obd_ops, o_ ## op) -            \
 358           offsetof(struct obd_ops, o_iocontrol))                \
 359          / sizeof(((struct obd_ops *)(0))->o_iocontrol))
 360
 361 #define OBD_COUNTER_INCREMENT(obdx, op)                    \
 362         if ((obdx)->obd_stats != NULL) {                          \
 363                 unsigned int coffset;                        \
 364                 coffset = (unsigned int)((obdx)->obd_cntr_base) + \
 365                         OBD_COUNTER_OFFSET(op);            \
 366                 LASSERT(coffset < (obdx)->obd_stats->ls_num);     \
 367                 lprocfs_counter_incr((obdx)->obd_stats, coffset); \
 368         }
 369
 370 #define EXP_COUNTER_INCREMENT(export, op)                                   \
 371         if ((export)->exp_obd->obd_stats != NULL) {                       \
 372                 unsigned int coffset;                                   \
 373                 coffset = (unsigned int)((export)->exp_obd->obd_cntr_base) + \
 374                         OBD_COUNTER_OFFSET(op);                       \
 375                 LASSERT(coffset < (export)->exp_obd->obd_stats->ls_num);     \
 376                 lprocfs_counter_incr((export)->exp_obd->obd_stats, coffset); \
 377                 if ((export)->exp_nid_stats != NULL &&                 \
 378                     (export)->exp_nid_stats->nid_stats != NULL)       \
 379                         lprocfs_counter_incr(                           \
 380                                 (export)->exp_nid_stats->nid_stats, coffset);\
 381         }
 382
 383 #define MD_COUNTER_OFFSET(op)                              \
 384         ((offsetof(struct md_ops, m_ ## op) -              \
 385           offsetof(struct md_ops, m_getstatus))          \
 386          / sizeof(((struct md_ops *)(0))->m_getstatus))
 387
 388 #define MD_COUNTER_INCREMENT(obdx, op)                     \
 389         if ((obd)->md_stats != NULL) {                     \
 390                 unsigned int coffset;                       \
 391                 coffset = (unsigned int)((obdx)->md_cntr_base) + \
 392                         MD_COUNTER_OFFSET(op);             \
 393                 LASSERT(coffset < (obdx)->md_stats->ls_num);     \
 394                 lprocfs_counter_incr((obdx)->md_stats, coffset); \
 395         }
 396
 397 #define EXP_MD_COUNTER_INCREMENT(export, op)                             \
 398         if ((export)->exp_obd->obd_stats != NULL) {                       \
 399                 unsigned int coffset;                                   \
 400                 coffset = (unsigned int)((export)->exp_obd->md_cntr_base) +  \
 401                         MD_COUNTER_OFFSET(op);                         \
 402                 LASSERT(coffset < (export)->exp_obd->md_stats->ls_num);      \
 403                 lprocfs_counter_incr((export)->exp_obd->md_stats, coffset);  \
 404                 if ((export)->exp_md_stats != NULL)                       \
 405                         lprocfs_counter_incr(                           \
 406                                 (export)->exp_md_stats, coffset);           \
 407         }
 408
 409 #else
 410 #define OBD_COUNTER_OFFSET(op)
 411 #define OBD_COUNTER_INCREMENT(obd, op)
 412 #define EXP_COUNTER_INCREMENT(exp, op)
 413 #define MD_COUNTER_INCREMENT(obd, op)
 414 #define EXP_MD_COUNTER_INCREMENT(exp, op)
 415 #endif
 416
 417 static inline int lprocfs_nid_ldlm_stats_init(struct nid_stat *tmp)
 418 {
 419         /* Always add in ldlm_stats */
 420         tmp->nid_ldlm_stats = lprocfs_alloc_stats(LDLM_LAST_OPC - LDLM_FIRST_OPC
 421                                                   ,LPROCFS_STATS_FLAG_NOPERCPU);
 422         if (tmp->nid_ldlm_stats == NULL)
 423                 return -ENOMEM;
 424
 425         lprocfs_init_ldlm_stats(tmp->nid_ldlm_stats);
 426
 427         return lprocfs_register_stats(tmp->nid_proc, "ldlm_stats",
 428                                       tmp->nid_ldlm_stats);
 429 }
 430
 431 #define OBD_CHECK_MD_OP(obd, op, err)                      \
 432 do {                                                        \
 433         if (!OBT(obd) || !MDP((obd), op)) {                  \
 434                 if (err)                                        \
 435                         CERROR("md_" #op ": dev %s/%d no operation\n", \
 436                                obd->obd_name, obd->obd_minor);  \
 437                 return err;                                 \
 438         }                                                      \
 439 } while (0)
 440
 441 #define EXP_CHECK_MD_OP(exp, op)                                \
 442 do {                                                        \
 443         if ((exp) == NULL) {                                \
 444                 CERROR("obd_" #op ": NULL export\n");      \
 445                 return -ENODEV;                         \
 446         }                                                      \
 447         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 448                 CERROR("obd_" #op ": cleaned up obd\n");        \
 449                 return -EOPNOTSUPP;                         \
 450         }                                                      \
 451         if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
 452                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 453                        (exp)->exp_obd->obd_name,                \
 454                        (exp)->exp_obd->obd_minor);            \
 455                 return -EOPNOTSUPP;                         \
 456         }                                                      \
 457 } while (0)
 458
 459
 460 #define OBD_CHECK_DT_OP(obd, op, err)                      \
 461 do {                                                        \
 462         if (!OBT(obd) || !OBP((obd), op)) {                  \
 463                 if (err)                                        \
 464                         CERROR("obd_" #op ": dev %d no operation\n",    \
 465                                obd->obd_minor);          \
 466                 return err;                                 \
 467         }                                                      \
 468 } while (0)
 469
 470 #define EXP_CHECK_DT_OP(exp, op)                                \
 471 do {                                                        \
 472         if ((exp) == NULL) {                                \
 473                 CERROR("obd_" #op ": NULL export\n");      \
 474                 return -ENODEV;                         \
 475         }                                                      \
 476         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 477                 CERROR("obd_" #op ": cleaned up obd\n");        \
 478                 return -EOPNOTSUPP;                         \
 479         }                                                      \
 480         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 481                 CERROR("obd_" #op ": dev %d no operation\n",    \
 482                        (exp)->exp_obd->obd_minor);            \
 483                 return -EOPNOTSUPP;                         \
 484         }                                                      \
 485 } while (0)
 486
 487 #define CTXT_CHECK_OP(ctxt, op, err)                             \
 488 do {                                                             \
 489         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {             \
 490                 if (err)                                             \
 491                         CERROR("lop_" #op ": dev %d no operation\n", \
 492                                ctxt->loc_obd->obd_minor);           \
 493                 return err;                                      \
 494         }                                                           \
 495 } while (0)
 496
 497 static inline int class_devno_max(void)
 498 {
 499         return MAX_OBD_DEVICES;
 500 }
 501
 502 static inline int obd_get_info(const struct lu_env *env,
 503                                struct obd_export *exp, __u32 keylen,
 504                                void *key, __u32 *vallen, void *val,
 505                                struct lov_stripe_md *lsm)
 506 {
 507         int rc;
 508
 509         EXP_CHECK_DT_OP(exp, get_info);
 510         EXP_COUNTER_INCREMENT(exp, get_info);
 511
 512         rc = OBP(exp->exp_obd, get_info)(env, exp, keylen, key, vallen, val,
 513                                          lsm);
 514         return rc;
 515 }
 516
 517 static inline int obd_set_info_async(const struct lu_env *env,
 518                                      struct obd_export *exp, u32 keylen,
 519                                      void *key, u32 vallen, void *val,
 520                                      struct ptlrpc_request_set *set)
 521 {
 522         int rc;
 523
 524         EXP_CHECK_DT_OP(exp, set_info_async);
 525         EXP_COUNTER_INCREMENT(exp, set_info_async);
 526
 527         rc = OBP(exp->exp_obd, set_info_async)(env, exp, keylen, key, vallen,
 528                                                val, set);
 529         return rc;
 530 }
 531
 532 /*
 533  * obd-lu integration.
 534  *
 535  * Functionality is being moved into new lu_device-based layering, but some
 536  * pieces of configuration process are still based on obd devices.
 537  *
 538  * Specifically, lu_device_type_operations::ldto_device_alloc() methods fully
 539  * subsume ->o_setup() methods of obd devices they replace. The same for
 540  * lu_device_operations::ldo_process_config() and ->o_process_config(). As a
 541  * result, obd_setup() and obd_process_config() branch and call one XOR
 542  * another.
 543  *
 544  * Yet neither lu_device_type_operations::ldto_device_fini() nor
 545  * lu_device_type_operations::ldto_device_free() fully implement the
 546  * functionality of ->o_precleanup() and ->o_cleanup() they override. Hence,
 547  * obd_precleanup() and obd_cleanup() call both lu_device and obd operations.
 548  */
 549
 550 #define DECLARE_LU_VARS(ldt, d)          \
 551         struct lu_device_type *ldt;       \
 552         struct lu_device *d
 553
 554 static inline int obd_setup(struct obd_device *obd, struct lustre_cfg *cfg)
 555 {
 556         int rc;
 557         DECLARE_LU_VARS(ldt, d);
 558
 559         ldt = obd->obd_type->typ_lu;
 560         if (ldt != NULL) {
 561                 struct lu_context  session_ctx;
 562                 struct lu_env env;
 563                 lu_context_init(&session_ctx, LCT_SESSION);
 564                 session_ctx.lc_thread = NULL;
 565                 lu_context_enter(&session_ctx);
 566
 567                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 568                 if (rc == 0) {
 569                         env.le_ses = &session_ctx;
 570                         d = ldt->ldt_ops->ldto_device_alloc(&env, ldt, cfg);
 571                         lu_env_fini(&env);
 572                         if (!IS_ERR(d)) {
 573                                 obd->obd_lu_dev = d;
 574                                 d->ld_obd = obd;
 575                                 rc = 0;
 576                         } else
 577                                 rc = PTR_ERR(d);
 578                 }
 579                 lu_context_exit(&session_ctx);
 580                 lu_context_fini(&session_ctx);
 581
 582         } else {
 583                 OBD_CHECK_DT_OP(obd, setup, -EOPNOTSUPP);
 584                 OBD_COUNTER_INCREMENT(obd, setup);
 585                 rc = OBP(obd, setup)(obd, cfg);
 586         }
 587         return rc;
 588 }
 589
 590 static inline int obd_precleanup(struct obd_device *obd,
 591                                  enum obd_cleanup_stage cleanup_stage)
 592 {
 593         int rc;
 594         DECLARE_LU_VARS(ldt, d);
 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
 622         OBD_CHECK_DEV(obd);
 623
 624         ldt = obd->obd_type->typ_lu;
 625         d = obd->obd_lu_dev;
 626         if (ldt != NULL && d != NULL) {
 627                 struct lu_env env;
 628
 629                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 630                 if (rc == 0) {
 631                         ldt->ldt_ops->ldto_device_free(&env, d);
 632                         lu_env_fini(&env);
 633                         obd->obd_lu_dev = NULL;
 634                 }
 635         }
 636         OBD_CHECK_DT_OP(obd, cleanup, 0);
 637         OBD_COUNTER_INCREMENT(obd, cleanup);
 638
 639         rc = OBP(obd, cleanup)(obd);
 640         return rc;
 641 }
 642
 643 static inline void obd_cleanup_client_import(struct obd_device *obd)
 644 {
 645         /* If we set up but never connected, the
 646            client import will not have been cleaned. */
 647         down_write(&obd->u.cli.cl_sem);
 648         if (obd->u.cli.cl_import) {
 649                 struct obd_import *imp;
 650                 imp = obd->u.cli.cl_import;
 651                 CDEBUG(D_CONFIG, "%s: client import never connected\n",
 652                        obd->obd_name);
 653                 ptlrpc_invalidate_import(imp);
 654                 if (imp->imp_rq_pool) {
 655                         ptlrpc_free_rq_pool(imp->imp_rq_pool);
 656                         imp->imp_rq_pool = NULL;
 657                 }
 658                 client_destroy_import(imp);
 659                 obd->u.cli.cl_import = NULL;
 660         }
 661         up_write(&obd->u.cli.cl_sem);
 662 }
 663
 664 static inline int
 665 obd_process_config(struct obd_device *obd, int datalen, void *data)
 666 {
 667         int rc;
 668         DECLARE_LU_VARS(ldt, d);
 669
 670         OBD_CHECK_DEV(obd);
 671
 672         obd->obd_process_conf = 1;
 673         ldt = obd->obd_type->typ_lu;
 674         d = obd->obd_lu_dev;
 675         if (ldt != NULL && d != NULL) {
 676                 struct lu_env env;
 677
 678                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 679                 if (rc == 0) {
 680                         rc = d->ld_ops->ldo_process_config(&env, d, data);
 681                         lu_env_fini(&env);
 682                 }
 683         } else {
 684                 OBD_CHECK_DT_OP(obd, process_config, -EOPNOTSUPP);
 685                 rc = OBP(obd, process_config)(obd, datalen, data);
 686         }
 687         OBD_COUNTER_INCREMENT(obd, process_config);
 688         obd->obd_process_conf = 0;
 689
 690         return rc;
 691 }
 692
 693 /* Pack an in-memory MD struct for storage on disk.
 694  * Returns +ve size of packed MD (0 for free), or -ve error.
 695  *
 696  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 697  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 698  * If @*disk_tgt == NULL, it will be allocated
 699  */
 700 static inline int obd_packmd(struct obd_export *exp,
 701                              struct lov_mds_md **disk_tgt,
 702                              struct lov_stripe_md *mem_src)
 703 {
 704         int rc;
 705
 706         EXP_CHECK_DT_OP(exp, packmd);
 707         EXP_COUNTER_INCREMENT(exp, packmd);
 708
 709         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 710         return rc;
 711 }
 712
 713 static inline int obd_size_diskmd(struct obd_export *exp,
 714                                   struct lov_stripe_md *mem_src)
 715 {
 716         return obd_packmd(exp, NULL, mem_src);
 717 }
 718
 719 static inline int obd_free_diskmd(struct obd_export *exp,
 720                                   struct lov_mds_md **disk_tgt)
 721 {
 722         LASSERT(disk_tgt);
 723         LASSERT(*disk_tgt);
 724         /*
 725          * LU-2590, for caller's convenience, *disk_tgt could be host
 726          * endianness, it needs swab to LE if necessary, while just
 727          * lov_mds_md header needs it for figuring out how much memory
 728          * needs to be freed.
 729          */
 730         if ((cpu_to_le32(LOV_MAGIC) != LOV_MAGIC) &&
 731             (((*disk_tgt)->lmm_magic == LOV_MAGIC_V1) ||
 732              ((*disk_tgt)->lmm_magic == LOV_MAGIC_V3)))
 733                 lustre_swab_lov_mds_md(*disk_tgt);
 734         return obd_packmd(exp, disk_tgt, NULL);
 735 }
 736
 737 /* Unpack an MD struct from disk to in-memory format.
 738  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 739  *
 740  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 741  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 742  * If @*mem_tgt == NULL, it will be allocated
 743  */
 744 static inline int obd_unpackmd(struct obd_export *exp,
 745                                struct lov_stripe_md **mem_tgt,
 746                                struct lov_mds_md *disk_src,
 747                                int disk_len)
 748 {
 749         int rc;
 750
 751         EXP_CHECK_DT_OP(exp, unpackmd);
 752         EXP_COUNTER_INCREMENT(exp, unpackmd);
 753
 754         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 755         return rc;
 756 }
 757
 758 /* helper functions */
 759 static inline int obd_alloc_memmd(struct obd_export *exp,
 760                                   struct lov_stripe_md **mem_tgt)
 761 {
 762         LASSERT(mem_tgt);
 763         LASSERT(*mem_tgt == NULL);
 764         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 765 }
 766
 767 static inline int obd_free_memmd(struct obd_export *exp,
 768                                  struct lov_stripe_md **mem_tgt)
 769 {
 770         int rc;
 771
 772         LASSERT(mem_tgt);
 773         LASSERT(*mem_tgt);
 774         rc = obd_unpackmd(exp, mem_tgt, NULL, 0);
 775         *mem_tgt = NULL;
 776         return rc;
 777 }
 778
 779 static inline int obd_create(const struct lu_env *env, struct obd_export *exp,
 780                              struct obdo *obdo, struct lov_stripe_md **ea,
 781                              struct obd_trans_info *oti)
 782 {
 783         int rc;
 784
 785         EXP_CHECK_DT_OP(exp, create);
 786         EXP_COUNTER_INCREMENT(exp, create);
 787
 788         rc = OBP(exp->exp_obd, create)(env, exp, obdo, ea, oti);
 789         return rc;
 790 }
 791
 792 static inline int obd_destroy(const struct lu_env *env, struct obd_export *exp,
 793                               struct obdo *obdo, struct lov_stripe_md *ea,
 794                               struct obd_trans_info *oti,
 795                               struct obd_export *md_exp, void *capa)
 796 {
 797         int rc;
 798
 799         EXP_CHECK_DT_OP(exp, destroy);
 800         EXP_COUNTER_INCREMENT(exp, destroy);
 801
 802         rc = OBP(exp->exp_obd, destroy)(env, exp, obdo, ea, oti, md_exp, capa);
 803         return rc;
 804 }
 805
 806 static inline int obd_getattr(const struct lu_env *env, struct obd_export *exp,
 807                               struct obd_info *oinfo)
 808 {
 809         int rc;
 810
 811         EXP_CHECK_DT_OP(exp, getattr);
 812         EXP_COUNTER_INCREMENT(exp, getattr);
 813
 814         rc = OBP(exp->exp_obd, getattr)(env, exp, oinfo);
 815         return rc;
 816 }
 817
 818 static inline int obd_getattr_async(struct obd_export *exp,
 819                                     struct obd_info *oinfo,
 820                                     struct ptlrpc_request_set *set)
 821 {
 822         int rc;
 823
 824         EXP_CHECK_DT_OP(exp, getattr_async);
 825         EXP_COUNTER_INCREMENT(exp, getattr_async);
 826
 827         rc = OBP(exp->exp_obd, getattr_async)(exp, oinfo, set);
 828         return rc;
 829 }
 830
 831 static inline int obd_setattr(const struct lu_env *env, struct obd_export *exp,
 832                               struct obd_info *oinfo,
 833                               struct obd_trans_info *oti)
 834 {
 835         int rc;
 836
 837         EXP_CHECK_DT_OP(exp, setattr);
 838         EXP_COUNTER_INCREMENT(exp, setattr);
 839
 840         rc = OBP(exp->exp_obd, setattr)(env, exp, oinfo, oti);
 841         return rc;
 842 }
 843
 844 /* This performs all the requests set init/wait/destroy actions. */
 845 static inline int obd_setattr_rqset(struct obd_export *exp,
 846                                     struct obd_info *oinfo,
 847                                     struct obd_trans_info *oti)
 848 {
 849         struct ptlrpc_request_set *set = NULL;
 850         int rc;
 851
 852         EXP_CHECK_DT_OP(exp, setattr_async);
 853         EXP_COUNTER_INCREMENT(exp, setattr_async);
 854
 855         set =  ptlrpc_prep_set();
 856         if (set == NULL)
 857                 return -ENOMEM;
 858
 859         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 860         if (rc == 0)
 861                 rc = ptlrpc_set_wait(set);
 862         ptlrpc_set_destroy(set);
 863         return rc;
 864 }
 865
 866 /* This adds all the requests into @set if @set != NULL, otherwise
 867    all requests are sent asynchronously without waiting for response. */
 868 static inline int obd_setattr_async(struct obd_export *exp,
 869                                     struct obd_info *oinfo,
 870                                     struct obd_trans_info *oti,
 871                                     struct ptlrpc_request_set *set)
 872 {
 873         int rc;
 874
 875         EXP_CHECK_DT_OP(exp, setattr_async);
 876         EXP_COUNTER_INCREMENT(exp, setattr_async);
 877
 878         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 879         return rc;
 880 }
 881
 882 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 883                                int priority)
 884 {
 885         struct obd_device *obd = imp->imp_obd;
 886         int rc;
 887
 888         OBD_CHECK_DEV_ACTIVE(obd);
 889         OBD_CHECK_DT_OP(obd, add_conn, -EOPNOTSUPP);
 890         OBD_COUNTER_INCREMENT(obd, add_conn);
 891
 892         rc = OBP(obd, add_conn)(imp, uuid, priority);
 893         return rc;
 894 }
 895
 896 static inline int obd_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
 897 {
 898         struct obd_device *obd = imp->imp_obd;
 899         int rc;
 900
 901         OBD_CHECK_DEV_ACTIVE(obd);
 902         OBD_CHECK_DT_OP(obd, del_conn, -EOPNOTSUPP);
 903         OBD_COUNTER_INCREMENT(obd, del_conn);
 904
 905         rc = OBP(obd, del_conn)(imp, uuid);
 906         return rc;
 907 }
 908
 909 static inline struct obd_uuid *obd_get_uuid(struct obd_export *exp)
 910 {
 911         struct obd_uuid *uuid;
 912
 913         OBD_CHECK_DT_OP(exp->exp_obd, get_uuid, NULL);
 914         EXP_COUNTER_INCREMENT(exp, get_uuid);
 915
 916         uuid = OBP(exp->exp_obd, get_uuid)(exp);
 917         return uuid;
 918 }
 919
 920 /** Create a new /a exp on device /a obd for the uuid /a cluuid
 921  * @param exp New export handle
 922  * @param d Connect data, supported flags are set, flags also understood
 923  *    by obd are returned.
 924  */
 925 static inline int obd_connect(const struct lu_env *env,
 926                               struct obd_export **exp, struct obd_device *obd,
 927                               struct obd_uuid *cluuid,
 928                               struct obd_connect_data *data,
 929                               void *localdata)
 930 {
 931         int rc;
 932         __u64 ocf = data ? data->ocd_connect_flags : 0; /* for post-condition
 933                                                    * check */
 934
 935         OBD_CHECK_DEV_ACTIVE(obd);
 936         OBD_CHECK_DT_OP(obd, connect, -EOPNOTSUPP);
 937         OBD_COUNTER_INCREMENT(obd, connect);
 938
 939         rc = OBP(obd, connect)(env, exp, obd, cluuid, data, localdata);
 940         /* check that only subset is granted */
 941         LASSERT(ergo(data != NULL, (data->ocd_connect_flags & ocf) ==
 942                                     data->ocd_connect_flags));
 943         return rc;
 944 }
 945
 946 static inline int obd_reconnect(const struct lu_env *env,
 947                                 struct obd_export *exp,
 948                                 struct obd_device *obd,
 949                                 struct obd_uuid *cluuid,
 950                                 struct obd_connect_data *d,
 951                                 void *localdata)
 952 {
 953         int rc;
 954         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 955                                                    * check */
 956
 957         OBD_CHECK_DEV_ACTIVE(obd);
 958         OBD_CHECK_DT_OP(obd, reconnect, 0);
 959         OBD_COUNTER_INCREMENT(obd, reconnect);
 960
 961         rc = OBP(obd, reconnect)(env, exp, obd, cluuid, d, localdata);
 962         /* check that only subset is granted */
 963         LASSERT(ergo(d != NULL,
 964                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 965         return rc;
 966 }
 967
 968 static inline int obd_disconnect(struct obd_export *exp)
 969 {
 970         int rc;
 971
 972         EXP_CHECK_DT_OP(exp, disconnect);
 973         EXP_COUNTER_INCREMENT(exp, disconnect);
 974
 975         rc = OBP(exp->exp_obd, disconnect)(exp);
 976         return rc;
 977 }
 978
 979 static inline int obd_fid_init(struct obd_device *obd, struct obd_export *exp,
 980                                enum lu_cli_type type)
 981 {
 982         int rc;
 983
 984         OBD_CHECK_DT_OP(obd, fid_init, 0);
 985         OBD_COUNTER_INCREMENT(obd, fid_init);
 986
 987         rc = OBP(obd, fid_init)(obd, exp, type);
 988         return rc;
 989 }
 990
 991 static inline int obd_fid_fini(struct obd_device *obd)
 992 {
 993         int rc;
 994
 995         OBD_CHECK_DT_OP(obd, fid_fini, 0);
 996         OBD_COUNTER_INCREMENT(obd, fid_fini);
 997
 998         rc = OBP(obd, fid_fini)(obd);
 999         return rc;
1000 }
1001
1002 static inline int obd_fid_alloc(struct obd_export *exp,
1003                                 struct lu_fid *fid,
1004                                 struct md_op_data *op_data)
1005 {
1006         int rc;
1007
1008         EXP_CHECK_DT_OP(exp, fid_alloc);
1009         EXP_COUNTER_INCREMENT(exp, fid_alloc);
1010
1011         rc = OBP(exp->exp_obd, fid_alloc)(exp, fid, op_data);
1012         return rc;
1013 }
1014
1015 static inline int obd_pool_new(struct obd_device *obd, char *poolname)
1016 {
1017         int rc;
1018
1019         OBD_CHECK_DT_OP(obd, pool_new, -EOPNOTSUPP);
1020         OBD_COUNTER_INCREMENT(obd, pool_new);
1021
1022         rc = OBP(obd, pool_new)(obd, poolname);
1023         return rc;
1024 }
1025
1026 static inline int obd_pool_del(struct obd_device *obd, char *poolname)
1027 {
1028         int rc;
1029
1030         OBD_CHECK_DT_OP(obd, pool_del, -EOPNOTSUPP);
1031         OBD_COUNTER_INCREMENT(obd, pool_del);
1032
1033         rc = OBP(obd, pool_del)(obd, poolname);
1034         return rc;
1035 }
1036
1037 static inline int obd_pool_add(struct obd_device *obd, char *poolname, char *ostname)
1038 {
1039         int rc;
1040
1041         OBD_CHECK_DT_OP(obd, pool_add, -EOPNOTSUPP);
1042         OBD_COUNTER_INCREMENT(obd, pool_add);
1043
1044         rc = OBP(obd, pool_add)(obd, poolname, ostname);
1045         return rc;
1046 }
1047
1048 static inline int obd_pool_rem(struct obd_device *obd, char *poolname, char *ostname)
1049 {
1050         int rc;
1051
1052         OBD_CHECK_DT_OP(obd, pool_rem, -EOPNOTSUPP);
1053         OBD_COUNTER_INCREMENT(obd, pool_rem);
1054
1055         rc = OBP(obd, pool_rem)(obd, poolname, ostname);
1056         return rc;
1057 }
1058
1059 static inline void obd_getref(struct obd_device *obd)
1060 {
1061         if (OBT(obd) && OBP(obd, getref)) {
1062                 OBD_COUNTER_INCREMENT(obd, getref);
1063                 OBP(obd, getref)(obd);
1064         }
1065 }
1066
1067 static inline void obd_putref(struct obd_device *obd)
1068 {
1069         if (OBT(obd) && OBP(obd, putref)) {
1070                 OBD_COUNTER_INCREMENT(obd, putref);
1071                 OBP(obd, putref)(obd);
1072         }
1073 }
1074
1075 static inline int obd_init_export(struct obd_export *exp)
1076 {
1077         int rc = 0;
1078
1079         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
1080             OBP((exp)->exp_obd, init_export))
1081                 rc = OBP(exp->exp_obd, init_export)(exp);
1082         return rc;
1083 }
1084
1085 static inline int obd_destroy_export(struct obd_export *exp)
1086 {
1087         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
1088             OBP((exp)->exp_obd, destroy_export))
1089                 OBP(exp->exp_obd, destroy_export)(exp);
1090         return 0;
1091 }
1092
1093 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1094  * If the cache is older than @max_age we will get a new value from the
1095  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1096 static inline int obd_statfs_async(struct obd_export *exp,
1097                                    struct obd_info *oinfo,
1098                                    __u64 max_age,
1099                                    struct ptlrpc_request_set *rqset)
1100 {
1101         int rc = 0;
1102         struct obd_device *obd;
1103
1104         if (exp == NULL || exp->exp_obd == NULL)
1105                 return -EINVAL;
1106
1107         obd = exp->exp_obd;
1108         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1109         OBD_COUNTER_INCREMENT(obd, statfs);
1110
1111         CDEBUG(D_SUPER, "%s: osfs %p age %llu, max_age %llu\n",
1112                obd->obd_name, &obd->obd_osfs, obd->obd_osfs_age, max_age);
1113         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1114                 rc = OBP(obd, statfs_async)(exp, oinfo, max_age, rqset);
1115         } else {
1116                 CDEBUG(D_SUPER,
1117                        "%s: use %p cache blocks %llu/%llu objects %llu/%llu\n",
1118                        obd->obd_name, &obd->obd_osfs,
1119                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1120                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1121                 spin_lock(&obd->obd_osfs_lock);
1122                 memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
1123                 spin_unlock(&obd->obd_osfs_lock);
1124                 oinfo->oi_flags |= OBD_STATFS_FROM_CACHE;
1125                 if (oinfo->oi_cb_up)
1126                         oinfo->oi_cb_up(oinfo, 0);
1127         }
1128         return rc;
1129 }
1130
1131 static inline int obd_statfs_rqset(struct obd_export *exp,
1132                                    struct obd_statfs *osfs, __u64 max_age,
1133                                    __u32 flags)
1134 {
1135         struct ptlrpc_request_set *set = NULL;
1136         struct obd_info oinfo = { { { 0 } } };
1137         int rc = 0;
1138
1139         set =  ptlrpc_prep_set();
1140         if (set == NULL)
1141                 return -ENOMEM;
1142
1143         oinfo.oi_osfs = osfs;
1144         oinfo.oi_flags = flags;
1145         rc = obd_statfs_async(exp, &oinfo, max_age, set);
1146         if (rc == 0)
1147                 rc = ptlrpc_set_wait(set);
1148         ptlrpc_set_destroy(set);
1149         return rc;
1150 }
1151
1152 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1153  * If the cache is older than @max_age we will get a new value from the
1154  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1155 static inline int obd_statfs(const struct lu_env *env, struct obd_export *exp,
1156                              struct obd_statfs *osfs, __u64 max_age,
1157                              __u32 flags)
1158 {
1159         int rc = 0;
1160         struct obd_device *obd = exp->exp_obd;
1161
1162         if (obd == NULL)
1163                 return -EINVAL;
1164
1165         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1166         OBD_COUNTER_INCREMENT(obd, statfs);
1167
1168         CDEBUG(D_SUPER, "osfs %llu, max_age %llu\n",
1169                obd->obd_osfs_age, max_age);
1170         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1171                 rc = OBP(obd, statfs)(env, exp, osfs, max_age, flags);
1172                 if (rc == 0) {
1173                         spin_lock(&obd->obd_osfs_lock);
1174                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
1175                         obd->obd_osfs_age = cfs_time_current_64();
1176                         spin_unlock(&obd->obd_osfs_lock);
1177                 }
1178         } else {
1179                 CDEBUG(D_SUPER, "%s: use %p cache blocks %llu/%llu objects %llu/%llu\n",
1180                        obd->obd_name, &obd->obd_osfs,
1181                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1182                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1183                 spin_lock(&obd->obd_osfs_lock);
1184                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
1185                 spin_unlock(&obd->obd_osfs_lock);
1186         }
1187         return rc;
1188 }
1189
1190 static inline int obd_preprw(const struct lu_env *env, int cmd,
1191                              struct obd_export *exp, struct obdo *oa,
1192                              int objcount, struct obd_ioobj *obj,
1193                              struct niobuf_remote *remote, int *pages,
1194                              struct niobuf_local *local,
1195                              struct obd_trans_info *oti,
1196                              struct lustre_capa *capa)
1197 {
1198         int rc;
1199
1200         EXP_CHECK_DT_OP(exp, preprw);
1201         EXP_COUNTER_INCREMENT(exp, preprw);
1202
1203         rc = OBP(exp->exp_obd, preprw)(env, cmd, exp, oa, objcount, obj, remote,
1204                                        pages, local, oti, capa);
1205         return rc;
1206 }
1207
1208 static inline int obd_commitrw(const struct lu_env *env, int cmd,
1209                                struct obd_export *exp, struct obdo *oa,
1210                                int objcount, struct obd_ioobj *obj,
1211                                struct niobuf_remote *rnb, int pages,
1212                                struct niobuf_local *local,
1213                                struct obd_trans_info *oti, int rc)
1214 {
1215         EXP_CHECK_DT_OP(exp, commitrw);
1216         EXP_COUNTER_INCREMENT(exp, commitrw);
1217
1218         rc = OBP(exp->exp_obd, commitrw)(env, cmd, exp, oa, objcount, obj,
1219                                          rnb, pages, local, oti, rc);
1220         return rc;
1221 }
1222
1223 static inline int obd_adjust_kms(struct obd_export *exp,
1224                                  struct lov_stripe_md *lsm, u64 size,
1225                                  int shrink)
1226 {
1227         int rc;
1228
1229         EXP_CHECK_DT_OP(exp, adjust_kms);
1230         EXP_COUNTER_INCREMENT(exp, adjust_kms);
1231
1232         rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
1233         return rc;
1234 }
1235
1236 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1237                                 int len, void *karg, void *uarg)
1238 {
1239         int rc;
1240
1241         EXP_CHECK_DT_OP(exp, iocontrol);
1242         EXP_COUNTER_INCREMENT(exp, iocontrol);
1243
1244         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1245         return rc;
1246 }
1247
1248 static inline int obd_find_cbdata(struct obd_export *exp,
1249                                   struct lov_stripe_md *lsm,
1250                                   ldlm_iterator_t it, void *data)
1251 {
1252         int rc;
1253
1254         EXP_CHECK_DT_OP(exp, find_cbdata);
1255         EXP_COUNTER_INCREMENT(exp, find_cbdata);
1256
1257         rc = OBP(exp->exp_obd, find_cbdata)(exp, lsm, it, data);
1258         return rc;
1259 }
1260
1261 static inline void obd_import_event(struct obd_device *obd,
1262                                     struct obd_import *imp,
1263                                     enum obd_import_event event)
1264 {
1265         if (!obd) {
1266                 CERROR("NULL device\n");
1267                 return;
1268         }
1269         if (obd->obd_set_up && OBP(obd, import_event)) {
1270                 OBD_COUNTER_INCREMENT(obd, import_event);
1271                 OBP(obd, import_event)(obd, imp, event);
1272         }
1273 }
1274
1275 static inline int obd_notify(struct obd_device *obd,
1276                              struct obd_device *watched,
1277                              enum obd_notify_event ev,
1278                              void *data)
1279 {
1280         int rc;
1281
1282         OBD_CHECK_DEV(obd);
1283
1284         /* the check for async_recov is a complete hack - I'm hereby
1285            overloading the meaning to also mean "this was called from
1286            mds_postsetup".  I know that my mds is able to handle notifies
1287            by this point, and it needs to get them to execute mds_postrecov. */
1288         if (!obd->obd_set_up && !obd->obd_async_recov) {
1289                 CDEBUG(D_HA, "obd %s not set up\n", obd->obd_name);
1290                 return -EINVAL;
1291         }
1292
1293         if (!OBP(obd, notify)) {
1294                 CDEBUG(D_HA, "obd %s has no notify handler\n", obd->obd_name);
1295                 return -ENOSYS;
1296         }
1297
1298         OBD_COUNTER_INCREMENT(obd, notify);
1299         rc = OBP(obd, notify)(obd, watched, ev, data);
1300         return rc;
1301 }
1302
1303 static inline int obd_notify_observer(struct obd_device *observer,
1304                                       struct obd_device *observed,
1305                                       enum obd_notify_event ev,
1306                                       void *data)
1307 {
1308         int rc1;
1309         int rc2;
1310
1311         struct obd_notify_upcall *onu;
1312
1313         if (observer->obd_observer)
1314                 rc1 = obd_notify(observer->obd_observer, observed, ev, data);
1315         else
1316                 rc1 = 0;
1317         /*
1318          * Also, call non-obd listener, if any
1319          */
1320         onu = &observer->obd_upcall;
1321         if (onu->onu_upcall != NULL)
1322                 rc2 = onu->onu_upcall(observer, observed, ev,
1323                                       onu->onu_owner, NULL);
1324         else
1325                 rc2 = 0;
1326
1327         return rc1 ? rc1 : rc2;
1328 }
1329
1330 static inline int obd_quotacheck(struct obd_export *exp,
1331                                  struct obd_quotactl *oqctl)
1332 {
1333         int rc;
1334
1335         EXP_CHECK_DT_OP(exp, quotacheck);
1336         EXP_COUNTER_INCREMENT(exp, quotacheck);
1337
1338         rc = OBP(exp->exp_obd, quotacheck)(exp->exp_obd, exp, oqctl);
1339         return rc;
1340 }
1341
1342 static inline int obd_quotactl(struct obd_export *exp,
1343                                struct obd_quotactl *oqctl)
1344 {
1345         int rc;
1346
1347         EXP_CHECK_DT_OP(exp, quotactl);
1348         EXP_COUNTER_INCREMENT(exp, quotactl);
1349
1350         rc = OBP(exp->exp_obd, quotactl)(exp->exp_obd, exp, oqctl);
1351         return rc;
1352 }
1353
1354 static inline int obd_health_check(const struct lu_env *env,
1355                                    struct obd_device *obd)
1356 {
1357         /* returns: 0 on healthy
1358          *       >0 on unhealthy + reason code/flag
1359          *          however the only supported reason == 1 right now
1360          *          We'll need to define some better reasons
1361          *          or flags in the future.
1362          *       <0 on error
1363          */
1364         int rc;
1365
1366         /* don't use EXP_CHECK_DT_OP, because NULL method is normal here */
1367         if (obd == NULL || !OBT(obd)) {
1368                 CERROR("cleaned up obd\n");
1369                 return -EOPNOTSUPP;
1370         }
1371         if (!obd->obd_set_up || obd->obd_stopping)
1372                 return 0;
1373         if (!OBP(obd, health_check))
1374                 return 0;
1375
1376         rc = OBP(obd, health_check)(env, obd);
1377         return rc;
1378 }
1379
1380 static inline int obd_register_observer(struct obd_device *obd,
1381                                         struct obd_device *observer)
1382 {
1383         OBD_CHECK_DEV(obd);
1384         down_write(&obd->obd_observer_link_sem);
1385         if (obd->obd_observer && observer) {
1386                 up_write(&obd->obd_observer_link_sem);
1387                 return -EALREADY;
1388         }
1389         obd->obd_observer = observer;
1390         up_write(&obd->obd_observer_link_sem);
1391         return 0;
1392 }
1393
1394 #if 0
1395 static inline int obd_register_page_removal_cb(struct obd_export *exp,
1396                                                obd_page_removal_cb_t cb,
1397                                                obd_pin_extent_cb pin_cb)
1398 {
1399         int rc;
1400
1401         OBD_CHECK_DT_OP(exp->exp_obd, register_page_removal_cb, 0);
1402         OBD_COUNTER_INCREMENT(exp->exp_obd, register_page_removal_cb);
1403
1404         rc = OBP(exp->exp_obd, register_page_removal_cb)(exp, cb, pin_cb);
1405         return rc;
1406 }
1407
1408 static inline int obd_unregister_page_removal_cb(struct obd_export *exp,
1409                                                  obd_page_removal_cb_t cb)
1410 {
1411         int rc;
1412
1413         OBD_CHECK_DT_OP(exp->exp_obd, unregister_page_removal_cb, 0);
1414         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_page_removal_cb);
1415
1416         rc = OBP(exp->exp_obd, unregister_page_removal_cb)(exp, cb);
1417         return rc;
1418 }
1419
1420 static inline int obd_register_lock_cancel_cb(struct obd_export *exp,
1421                                               obd_lock_cancel_cb cb)
1422 {
1423         int rc;
1424
1425         OBD_CHECK_DT_OP(exp->exp_obd, register_lock_cancel_cb, 0);
1426         OBD_COUNTER_INCREMENT(exp->exp_obd, register_lock_cancel_cb);
1427
1428         rc = OBP(exp->exp_obd, register_lock_cancel_cb)(exp, cb);
1429         return rc;
1430 }
1431
1432 static inline int obd_unregister_lock_cancel_cb(struct obd_export *exp,
1433                                                  obd_lock_cancel_cb cb)
1434 {
1435         int rc;
1436
1437         OBD_CHECK_DT_OP(exp->exp_obd, unregister_lock_cancel_cb, 0);
1438         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_lock_cancel_cb);
1439
1440         rc = OBP(exp->exp_obd, unregister_lock_cancel_cb)(exp, cb);
1441         return rc;
1442 }
1443 #endif
1444
1445 /* metadata helpers */
1446 static inline int md_getstatus(struct obd_export *exp,
1447                                struct lu_fid *fid, struct obd_capa **pc)
1448 {
1449         int rc;
1450
1451         EXP_CHECK_MD_OP(exp, getstatus);
1452         EXP_MD_COUNTER_INCREMENT(exp, getstatus);
1453         rc = MDP(exp->exp_obd, getstatus)(exp, fid, pc);
1454         return rc;
1455 }
1456
1457 static inline int md_getattr(struct obd_export *exp, struct md_op_data *op_data,
1458                              struct ptlrpc_request **request)
1459 {
1460         int rc;
1461
1462         EXP_CHECK_MD_OP(exp, getattr);
1463         EXP_MD_COUNTER_INCREMENT(exp, getattr);
1464         rc = MDP(exp->exp_obd, getattr)(exp, op_data, request);
1465         return rc;
1466 }
1467
1468 static inline int md_null_inode(struct obd_export *exp,
1469                                    const struct lu_fid *fid)
1470 {
1471         int rc;
1472
1473         EXP_CHECK_MD_OP(exp, null_inode);
1474         EXP_MD_COUNTER_INCREMENT(exp, null_inode);
1475         rc = MDP(exp->exp_obd, null_inode)(exp, fid);
1476         return rc;
1477 }
1478
1479 static inline int md_find_cbdata(struct obd_export *exp,
1480                                  const struct lu_fid *fid,
1481                                  ldlm_iterator_t it, void *data)
1482 {
1483         int rc;
1484
1485         EXP_CHECK_MD_OP(exp, find_cbdata);
1486         EXP_MD_COUNTER_INCREMENT(exp, find_cbdata);
1487         rc = MDP(exp->exp_obd, find_cbdata)(exp, fid, it, data);
1488         return rc;
1489 }
1490
1491 static inline int md_close(struct obd_export *exp, struct md_op_data *op_data,
1492                            struct md_open_data *mod,
1493                            struct ptlrpc_request **request)
1494 {
1495         int rc;
1496
1497         EXP_CHECK_MD_OP(exp, close);
1498         EXP_MD_COUNTER_INCREMENT(exp, close);
1499         rc = MDP(exp->exp_obd, close)(exp, op_data, mod, request);
1500         return rc;
1501 }
1502
1503 static inline int md_create(struct obd_export *exp, struct md_op_data *op_data,
1504                             const void *data, int datalen, int mode, __u32 uid,
1505                             __u32 gid, cfs_cap_t cap_effective, __u64 rdev,
1506                             struct ptlrpc_request **request)
1507 {
1508         int rc;
1509
1510         EXP_CHECK_MD_OP(exp, create);
1511         EXP_MD_COUNTER_INCREMENT(exp, create);
1512         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1513                                        uid, gid, cap_effective, rdev, request);
1514         return rc;
1515 }
1516
1517 static inline int md_done_writing(struct obd_export *exp,
1518                                   struct md_op_data *op_data,
1519                                   struct md_open_data *mod)
1520 {
1521         int rc;
1522
1523         EXP_CHECK_MD_OP(exp, done_writing);
1524         EXP_MD_COUNTER_INCREMENT(exp, done_writing);
1525         rc = MDP(exp->exp_obd, done_writing)(exp, op_data, mod);
1526         return rc;
1527 }
1528
1529 static inline int md_enqueue(struct obd_export *exp,
1530                              struct ldlm_enqueue_info *einfo,
1531                              struct lookup_intent *it,
1532                              struct md_op_data *op_data,
1533                              struct lustre_handle *lockh,
1534                              void *lmm, int lmmsize,
1535                              struct ptlrpc_request **req,
1536                              __u64 extra_lock_flags)
1537 {
1538         int rc;
1539
1540         EXP_CHECK_MD_OP(exp, enqueue);
1541         EXP_MD_COUNTER_INCREMENT(exp, enqueue);
1542         rc = MDP(exp->exp_obd, enqueue)(exp, einfo, it, op_data, lockh,
1543                                         lmm, lmmsize, req, extra_lock_flags);
1544         return rc;
1545 }
1546
1547 static inline int md_getattr_name(struct obd_export *exp,
1548                                   struct md_op_data *op_data,
1549                                   struct ptlrpc_request **request)
1550 {
1551         int rc;
1552
1553         EXP_CHECK_MD_OP(exp, getattr_name);
1554         EXP_MD_COUNTER_INCREMENT(exp, getattr_name);
1555         rc = MDP(exp->exp_obd, getattr_name)(exp, op_data, request);
1556         return rc;
1557 }
1558
1559 static inline int md_intent_lock(struct obd_export *exp,
1560                                  struct md_op_data *op_data, void *lmm,
1561                                  int lmmsize, struct lookup_intent *it,
1562                                  int lookup_flags, struct ptlrpc_request **reqp,
1563                                  ldlm_blocking_callback cb_blocking,
1564                                  __u64 extra_lock_flags)
1565 {
1566         int rc;
1567
1568         EXP_CHECK_MD_OP(exp, intent_lock);
1569         EXP_MD_COUNTER_INCREMENT(exp, intent_lock);
1570         rc = MDP(exp->exp_obd, intent_lock)(exp, op_data, lmm, lmmsize,
1571                                             it, lookup_flags, reqp, cb_blocking,
1572                                             extra_lock_flags);
1573         return rc;
1574 }
1575
1576 static inline int md_link(struct obd_export *exp, struct md_op_data *op_data,
1577                           struct ptlrpc_request **request)
1578 {
1579         int rc;
1580
1581         EXP_CHECK_MD_OP(exp, link);
1582         EXP_MD_COUNTER_INCREMENT(exp, link);
1583         rc = MDP(exp->exp_obd, link)(exp, op_data, request);
1584         return rc;
1585 }
1586
1587 static inline int md_rename(struct obd_export *exp, struct md_op_data *op_data,
1588                             const char *old, int oldlen, const char *new,
1589                             int newlen, struct ptlrpc_request **request)
1590 {
1591         int rc;
1592
1593         EXP_CHECK_MD_OP(exp, rename);
1594         EXP_MD_COUNTER_INCREMENT(exp, rename);
1595         rc = MDP(exp->exp_obd, rename)(exp, op_data, old, oldlen, new,
1596                                        newlen, request);
1597         return rc;
1598 }
1599
1600 static inline int md_is_subdir(struct obd_export *exp,
1601                                const struct lu_fid *pfid,
1602                                const struct lu_fid *cfid,
1603                                struct ptlrpc_request **request)
1604 {
1605         int rc;
1606
1607         EXP_CHECK_MD_OP(exp, is_subdir);
1608         EXP_MD_COUNTER_INCREMENT(exp, is_subdir);
1609         rc = MDP(exp->exp_obd, is_subdir)(exp, pfid, cfid, request);
1610         return rc;
1611 }
1612
1613 static inline int md_setattr(struct obd_export *exp, struct md_op_data *op_data,
1614                              void *ea, int ealen, void *ea2, int ea2len,
1615                              struct ptlrpc_request **request,
1616                              struct md_open_data **mod)
1617 {
1618         int rc;
1619
1620         EXP_CHECK_MD_OP(exp, setattr);
1621         EXP_MD_COUNTER_INCREMENT(exp, setattr);
1622         rc = MDP(exp->exp_obd, setattr)(exp, op_data, ea, ealen,
1623                                         ea2, ea2len, request, mod);
1624         return rc;
1625 }
1626
1627 static inline int md_sync(struct obd_export *exp, const struct lu_fid *fid,
1628                           struct obd_capa *oc, struct ptlrpc_request **request)
1629 {
1630         int rc;
1631
1632         EXP_CHECK_MD_OP(exp, sync);
1633         EXP_MD_COUNTER_INCREMENT(exp, sync);
1634         rc = MDP(exp->exp_obd, sync)(exp, fid, oc, request);
1635         return rc;
1636 }
1637
1638 static inline int md_readpage(struct obd_export *exp, struct md_op_data *opdata,
1639                               struct page **pages,
1640                               struct ptlrpc_request **request)
1641 {
1642         int rc;
1643
1644         EXP_CHECK_MD_OP(exp, readpage);
1645         EXP_MD_COUNTER_INCREMENT(exp, readpage);
1646         rc = MDP(exp->exp_obd, readpage)(exp, opdata, pages, request);
1647         return rc;
1648 }
1649
1650 static inline int md_unlink(struct obd_export *exp, struct md_op_data *op_data,
1651                             struct ptlrpc_request **request)
1652 {
1653         int rc;
1654
1655         EXP_CHECK_MD_OP(exp, unlink);
1656         EXP_MD_COUNTER_INCREMENT(exp, unlink);
1657         rc = MDP(exp->exp_obd, unlink)(exp, op_data, request);
1658         return rc;
1659 }
1660
1661 static inline int md_get_lustre_md(struct obd_export *exp,
1662                                    struct ptlrpc_request *req,
1663                                    struct obd_export *dt_exp,
1664                                    struct obd_export *md_exp,
1665                                    struct lustre_md *md)
1666 {
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         EXP_CHECK_MD_OP(exp, free_lustre_md);
1676         EXP_MD_COUNTER_INCREMENT(exp, free_lustre_md);
1677         return MDP(exp->exp_obd, free_lustre_md)(exp, md);
1678 }
1679
1680 static inline int md_setxattr(struct obd_export *exp,
1681                               const struct lu_fid *fid, struct obd_capa *oc,
1682                               u64 valid, const char *name,
1683                               const char *input, int input_size,
1684                               int output_size, int flags, __u32 suppgid,
1685                               struct ptlrpc_request **request)
1686 {
1687         EXP_CHECK_MD_OP(exp, setxattr);
1688         EXP_MD_COUNTER_INCREMENT(exp, setxattr);
1689         return MDP(exp->exp_obd, setxattr)(exp, fid, oc, valid, name, input,
1690                                            input_size, output_size, flags,
1691                                            suppgid, request);
1692 }
1693
1694 static inline int md_getxattr(struct obd_export *exp,
1695                               const struct lu_fid *fid, struct obd_capa *oc,
1696                               u64 valid, const char *name,
1697                               const char *input, int input_size,
1698                               int output_size, int flags,
1699                               struct ptlrpc_request **request)
1700 {
1701         EXP_CHECK_MD_OP(exp, getxattr);
1702         EXP_MD_COUNTER_INCREMENT(exp, getxattr);
1703         return MDP(exp->exp_obd, getxattr)(exp, fid, oc, valid, name, input,
1704                                            input_size, output_size, flags,
1705                                            request);
1706 }
1707
1708 static inline int md_set_open_replay_data(struct obd_export *exp,
1709                                           struct obd_client_handle *och,
1710                                           struct lookup_intent *it)
1711 {
1712         EXP_CHECK_MD_OP(exp, set_open_replay_data);
1713         EXP_MD_COUNTER_INCREMENT(exp, set_open_replay_data);
1714         return MDP(exp->exp_obd, set_open_replay_data)(exp, och, it);
1715 }
1716
1717 static inline int md_clear_open_replay_data(struct obd_export *exp,
1718                                             struct obd_client_handle *och)
1719 {
1720         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
1721         EXP_MD_COUNTER_INCREMENT(exp, clear_open_replay_data);
1722         return MDP(exp->exp_obd, clear_open_replay_data)(exp, och);
1723 }
1724
1725 static inline int md_set_lock_data(struct obd_export *exp,
1726                                    __u64 *lockh, void *data, __u64 *bits)
1727 {
1728         EXP_CHECK_MD_OP(exp, set_lock_data);
1729         EXP_MD_COUNTER_INCREMENT(exp, set_lock_data);
1730         return MDP(exp->exp_obd, set_lock_data)(exp, lockh, data, bits);
1731 }
1732
1733 static inline int md_cancel_unused(struct obd_export *exp,
1734                                    const struct lu_fid *fid,
1735                                    ldlm_policy_data_t *policy,
1736                                    ldlm_mode_t mode,
1737                                    ldlm_cancel_flags_t flags,
1738                                    void *opaque)
1739 {
1740         int rc;
1741
1742         EXP_CHECK_MD_OP(exp, cancel_unused);
1743         EXP_MD_COUNTER_INCREMENT(exp, cancel_unused);
1744
1745         rc = MDP(exp->exp_obd, cancel_unused)(exp, fid, policy, mode,
1746                                               flags, opaque);
1747         return rc;
1748 }
1749
1750 static inline ldlm_mode_t md_lock_match(struct obd_export *exp, __u64 flags,
1751                                         const struct lu_fid *fid,
1752                                         ldlm_type_t type,
1753                                         ldlm_policy_data_t *policy,
1754                                         ldlm_mode_t mode,
1755                                         struct lustre_handle *lockh)
1756 {
1757         EXP_CHECK_MD_OP(exp, lock_match);
1758         EXP_MD_COUNTER_INCREMENT(exp, lock_match);
1759         return MDP(exp->exp_obd, lock_match)(exp, flags, fid, type,
1760                                              policy, mode, lockh);
1761 }
1762
1763 static inline int md_init_ea_size(struct obd_export *exp, int easize,
1764                                   int def_asize, int cookiesize,
1765                                   int def_cookiesize)
1766 {
1767         EXP_CHECK_MD_OP(exp, init_ea_size);
1768         EXP_MD_COUNTER_INCREMENT(exp, init_ea_size);
1769         return MDP(exp->exp_obd, init_ea_size)(exp, easize, def_asize,
1770                                                cookiesize, def_cookiesize);
1771 }
1772
1773 static inline int md_get_remote_perm(struct obd_export *exp,
1774                                      const struct lu_fid *fid,
1775                                      struct obd_capa *oc, __u32 suppgid,
1776                                      struct ptlrpc_request **request)
1777 {
1778         EXP_CHECK_MD_OP(exp, get_remote_perm);
1779         EXP_MD_COUNTER_INCREMENT(exp, get_remote_perm);
1780         return MDP(exp->exp_obd, get_remote_perm)(exp, fid, oc, suppgid,
1781                                                   request);
1782 }
1783
1784 static inline int md_renew_capa(struct obd_export *exp, struct obd_capa *ocapa,
1785                                 renew_capa_cb_t cb)
1786 {
1787         int rc;
1788
1789         EXP_CHECK_MD_OP(exp, renew_capa);
1790         EXP_MD_COUNTER_INCREMENT(exp, renew_capa);
1791         rc = MDP(exp->exp_obd, renew_capa)(exp, ocapa, cb);
1792         return rc;
1793 }
1794
1795 static inline int md_unpack_capa(struct obd_export *exp,
1796                                  struct ptlrpc_request *req,
1797                                  const struct req_msg_field *field,
1798                                  struct obd_capa **oc)
1799 {
1800         int rc;
1801
1802         EXP_CHECK_MD_OP(exp, unpack_capa);
1803         EXP_MD_COUNTER_INCREMENT(exp, unpack_capa);
1804         rc = MDP(exp->exp_obd, unpack_capa)(exp, req, field, oc);
1805         return rc;
1806 }
1807
1808 static inline int md_intent_getattr_async(struct obd_export *exp,
1809                                           struct md_enqueue_info *minfo,
1810                                           struct ldlm_enqueue_info *einfo)
1811 {
1812         int rc;
1813
1814         EXP_CHECK_MD_OP(exp, intent_getattr_async);
1815         EXP_MD_COUNTER_INCREMENT(exp, intent_getattr_async);
1816         rc = MDP(exp->exp_obd, intent_getattr_async)(exp, minfo, einfo);
1817         return rc;
1818 }
1819
1820 static inline int md_revalidate_lock(struct obd_export *exp,
1821                                      struct lookup_intent *it,
1822                                      struct lu_fid *fid, __u64 *bits)
1823 {
1824         int rc;
1825
1826         EXP_CHECK_MD_OP(exp, revalidate_lock);
1827         EXP_MD_COUNTER_INCREMENT(exp, revalidate_lock);
1828         rc = MDP(exp->exp_obd, revalidate_lock)(exp, it, fid, bits);
1829         return rc;
1830 }
1831
1832
1833 /* OBD Metadata Support */
1834
1835 extern int obd_init_caches(void);
1836 extern void obd_cleanup_caches(void);
1837
1838 /* support routines */
1839 extern struct kmem_cache *obdo_cachep;
1840
1841 #define OBDO_ALLOC(ptr)                                                \
1842 do {                                                                      \
1843         OBD_SLAB_ALLOC_PTR_GFP((ptr), obdo_cachep, GFP_NOFS);             \
1844 } while (0)
1845
1846 #define OBDO_FREE(ptr)                                                  \
1847 do {                                                                      \
1848         OBD_SLAB_FREE_PTR((ptr), obdo_cachep);                          \
1849 } while (0)
1850
1851
1852 static inline void obdo2fid(struct obdo *oa, struct lu_fid *fid)
1853 {
1854         /* something here */
1855 }
1856
1857 static inline void fid2obdo(struct lu_fid *fid, struct obdo *oa)
1858 {
1859         /* something here */
1860 }
1861
1862 typedef int (*register_lwp_cb)(void *data);
1863
1864 struct lwp_register_item {
1865         struct obd_export **lri_exp;
1866         register_lwp_cb     lri_cb_func;
1867         void               *lri_cb_data;
1868         struct list_head            lri_list;
1869         char                lri_name[MTI_NAME_MAXLEN];
1870 };
1871
1872 /* I'm as embarrassed about this as you are.
1873  *
1874  * <shaver> // XXX do not look into _superhack with remaining eye
1875  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
1876 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
1877
1878 /* obd_mount.c */
1879
1880 /* sysctl.c */
1881 extern void obd_sysctl_init (void);
1882 extern void obd_sysctl_clean (void);
1883
1884 /* uuid.c  */
1885 typedef __u8 class_uuid_t[16];
1886 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
1887
1888 /* lustre_peer.c    */
1889 int lustre_uuid_to_peer(const char *uuid, lnet_nid_t *peer_nid, int index);
1890 int class_add_uuid(const char *uuid, __u64 nid);
1891 int class_del_uuid (const char *uuid);
1892 int class_check_uuid(struct obd_uuid *uuid, __u64 nid);
1893 void class_init_uuidlist(void);
1894 void class_exit_uuidlist(void);
1895
1896 /* class_obd.c */
1897 extern char obd_jobid_node[];
1898
1899 /* prng.c */
1900 #define ll_generate_random_uuid(uuid_out) cfs_get_random_bytes(uuid_out, sizeof(class_uuid_t))
1901
1902 #endif /* __LINUX_OBD_CLASS_H */