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 #include "linux/obd_class.h"
  49
  50 #define OBD_STATFS_NODELAY      0x0001  /* requests should be send without delay
  51                                          * and resends for avoid deadlocks */
  52 #define OBD_STATFS_FROM_CACHE   0x0002  /* the statfs callback should not update
  53                                          * obd_osfs_age */
  54 #define OBD_STATFS_PTLRPCD      0x0004  /* requests will be sent via ptlrpcd
  55                                          * instead of a specific set. This
  56                                          * means that we cannot rely on the set
  57                                          * interpret routine to be called.
  58                                          * lov_statfs_fini() must thus be called
  59                                          * by the request interpret routine */
  60 #define OBD_STATFS_FOR_MDT0     0x0008  /* The statfs is only for retrieving
  61                                          * information from MDT0. */
  62 #define OBD_FL_PUNCH    0x00000001      /* To indicate it is punch operation */
  63
  64 /* OBD Device Declarations */
  65 extern struct obd_device *obd_devs[MAX_OBD_DEVICES];
  66 extern rwlock_t obd_dev_lock;
  67
  68 /* OBD Operations Declarations */
  69 extern struct obd_device *class_conn2obd(struct lustre_handle *);
  70 extern struct obd_device *class_exp2obd(struct obd_export *);
  71 extern int class_handle_ioctl(unsigned int cmd, unsigned long arg);
  72 extern int lustre_get_jobid(char *jobid);
  73
  74 struct lu_device_type;
  75
  76 /* genops.c */
  77 struct obd_export *class_conn2export(struct lustre_handle *);
  78 int class_register_type(struct obd_ops *, struct md_ops *,
  79                         struct lprocfs_vars *, const char *nm,
  80                         struct lu_device_type *ldt);
  81 int class_unregister_type(const char *nm);
  82
  83 struct obd_device *class_newdev(const char *type_name, const char *name);
  84 void class_release_dev(struct obd_device *obd);
  85
  86 int class_name2dev(const char *name);
  87 struct obd_device *class_name2obd(const char *name);
  88 int class_uuid2dev(struct obd_uuid *uuid);
  89 struct obd_device *class_uuid2obd(struct obd_uuid *uuid);
  90 void class_obd_list(void);
  91 struct obd_device * class_find_client_obd(struct obd_uuid *tgt_uuid,
  92                                           const char * typ_name,
  93                                           struct obd_uuid *grp_uuid);
  94 struct obd_device * class_devices_in_group(struct obd_uuid *grp_uuid,
  95                                            int *next);
  96 struct obd_device * class_num2obd(int num);
  97 int get_devices_count(void);
  98
  99 int class_notify_sptlrpc_conf(const char *fsname, int namelen);
 100
 101 char *obd_export_nid2str(struct obd_export *exp);
 102
 103 int obd_export_evict_by_nid(struct obd_device *obd, const char *nid);
 104 int obd_export_evict_by_uuid(struct obd_device *obd, const char *uuid);
 105 int obd_connect_flags2str(char *page, int count, __u64 flags, char *sep);
 106
 107 int obd_zombie_impexp_init(void);
 108 void obd_zombie_impexp_stop(void);
 109 void obd_zombie_impexp_cull(void);
 110 void obd_zombie_barrier(void);
 111 void obd_exports_barrier(struct obd_device *obd);
 112 int kuc_len(int payload_len);
 113 struct kuc_hdr * kuc_ptr(void *p);
 114 int kuc_ispayload(void *p);
 115 void *kuc_alloc(int payload_len, int transport, int type);
 116 void kuc_free(void *p, int payload_len);
 117
 118 struct llog_handle;
 119 struct llog_rec_hdr;
 120 typedef int (*llog_cb_t)(const struct lu_env *, struct llog_handle *,
 121                          struct llog_rec_hdr *, void *);
 122 /* obd_config.c */
 123 struct lustre_cfg *lustre_cfg_rename(struct lustre_cfg *cfg,
 124                                      const char *new_name);
 125 int class_process_config(struct lustre_cfg *lcfg);
 126 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
 127                              struct lustre_cfg *lcfg, void *data);
 128 int class_attach(struct lustre_cfg *lcfg);
 129 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
 130 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg);
 131 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg);
 132 struct obd_device *class_incref(struct obd_device *obd,
 133                                 const char *scope, const void *source);
 134 void class_decref(struct obd_device *obd,
 135                   const char *scope, const void *source);
 136 void dump_exports(struct obd_device *obd, int locks);
 137 int class_config_llog_handler(const struct lu_env *env,
 138                               struct llog_handle *handle,
 139                               struct llog_rec_hdr *rec, void *data);
 140 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg);
 141 int class_add_uuid(const char *uuid, __u64 nid);
 142
 143 /*obdecho*/
 144 #if defined (CONFIG_PROC_FS)
 145 extern void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars);
 146 #else
 147 static inline void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars)
 148 {
 149         memset(lvars, 0, sizeof(*lvars));
 150 }
 151 #endif
 152
 153 #define CFG_F_START     0x01   /* Set when we start updating from a log */
 154 #define CFG_F_MARKER    0x02   /* We are within a maker */
 155 #define CFG_F_SKIP      0x04   /* We should ignore this cfg command */
 156 #define CFG_F_COMPAT146 0x08   /* Allow old-style logs */
 157 #define CFG_F_EXCLUDE   0x10   /* OST exclusion list */
 158
 159 /* Passed as data param to class_config_parse_llog */
 160 struct config_llog_instance {
 161         char           *cfg_obdname;
 162         void           *cfg_instance;
 163         struct super_block *cfg_sb;
 164         struct obd_uuid     cfg_uuid;
 165         llog_cb_t           cfg_callback;
 166         int              cfg_last_idx; /* for partial llog processing */
 167         int              cfg_flags;
 168 };
 169 int class_config_parse_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
 170                             char *name, struct config_llog_instance *cfg);
 171 int class_config_dump_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
 172                            char *name, struct config_llog_instance *cfg);
 173
 174 enum {
 175         CONFIG_T_CONFIG  = 0,
 176         CONFIG_T_SPTLRPC = 1,
 177         CONFIG_T_RECOVER = 2,
 178         CONFIG_T_PARAMS  = 3,
 179         CONFIG_T_MAX     = 4
 180 };
 181
 182 #define PARAMS_FILENAME "params"
 183 #define LCTL_UPCALL     "lctl"
 184
 185 /* list of active configuration logs  */
 186 struct config_llog_data {
 187         struct ldlm_res_id        cld_resid;
 188         struct config_llog_instance cld_cfg;
 189         struct list_head                  cld_list_chain;
 190         atomic_t                cld_refcount;
 191         struct config_llog_data    *cld_sptlrpc;/* depended sptlrpc log */
 192         struct config_llog_data    *cld_params; /* common parameters log */
 193         struct config_llog_data    *cld_recover;/* imperative recover log */
 194         struct obd_export         *cld_mgcexp;
 195         struct mutex                cld_lock;
 196         int                      cld_type;
 197         unsigned int            cld_stopping:1, /* we were told to stop
 198                                                      * watching */
 199                                     cld_lostlock:1; /* lock not requeued */
 200         char                    cld_logname[0];
 201 };
 202
 203 struct lustre_profile {
 204         struct list_head       lp_list;
 205         char        *lp_profile;
 206         char        *lp_dt;
 207         char        *lp_md;
 208 };
 209
 210 struct lustre_profile *class_get_profile(const char * prof);
 211 void class_del_profile(const char *prof);
 212 void class_del_profiles(void);
 213
 214 #if LUSTRE_TRACKS_LOCK_EXP_REFS
 215
 216 void __class_export_add_lock_ref(struct obd_export *, struct ldlm_lock *);
 217 void __class_export_del_lock_ref(struct obd_export *, struct ldlm_lock *);
 218 extern void (*class_export_dump_hook)(struct obd_export *);
 219
 220 #else
 221
 222 #define __class_export_add_lock_ref(exp, lock)       do {} while(0)
 223 #define __class_export_del_lock_ref(exp, lock)       do {} while(0)
 224
 225 #endif
 226
 227 #define class_export_rpc_inc(exp)                                      \
 228 ({                                                                    \
 229         atomic_inc(&(exp)->exp_rpc_count);                        \
 230         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",    \
 231                (exp), atomic_read(&(exp)->exp_rpc_count));        \
 232 })
 233
 234 #define class_export_rpc_dec(exp)                                      \
 235 ({                                                                    \
 236         LASSERT_ATOMIC_POS(&exp->exp_rpc_count);                        \
 237         atomic_dec(&(exp)->exp_rpc_count);                        \
 238         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",    \
 239                (exp), atomic_read(&(exp)->exp_rpc_count));        \
 240 })
 241
 242 #define class_export_lock_get(exp, lock)                                \
 243 ({                                                                    \
 244         atomic_inc(&(exp)->exp_locks_count);                    \
 245         __class_export_add_lock_ref(exp, lock);                  \
 246         CDEBUG(D_INFO, "lock GETting export %p : new locks_count %d\n", \
 247                (exp), atomic_read(&(exp)->exp_locks_count));    \
 248         class_export_get(exp);                                    \
 249 })
 250
 251 #define class_export_lock_put(exp, lock)                                \
 252 ({                                                                    \
 253         LASSERT_ATOMIC_POS(&exp->exp_locks_count);                    \
 254         atomic_dec(&(exp)->exp_locks_count);                    \
 255         __class_export_del_lock_ref(exp, lock);                  \
 256         CDEBUG(D_INFO, "lock PUTting export %p : new locks_count %d\n", \
 257                (exp), atomic_read(&(exp)->exp_locks_count));    \
 258         class_export_put(exp);                                    \
 259 })
 260
 261 #define class_export_cb_get(exp)                                        \
 262 ({                                                                    \
 263         atomic_inc(&(exp)->exp_cb_count);                          \
 264         CDEBUG(D_INFO, "callback GETting export %p : new cb_count %d\n",\
 265                (exp), atomic_read(&(exp)->exp_cb_count));          \
 266         class_export_get(exp);                                    \
 267 })
 268
 269 #define class_export_cb_put(exp)                                        \
 270 ({                                                                    \
 271         LASSERT_ATOMIC_POS(&exp->exp_cb_count);                  \
 272         atomic_dec(&(exp)->exp_cb_count);                          \
 273         CDEBUG(D_INFO, "callback PUTting export %p : new cb_count %d\n",\
 274                (exp), atomic_read(&(exp)->exp_cb_count));          \
 275         class_export_put(exp);                                    \
 276 })
 277
 278 /* genops.c */
 279 struct obd_export *class_export_get(struct obd_export *exp);
 280 void class_export_put(struct obd_export *exp);
 281 struct obd_export *class_new_export(struct obd_device *obddev,
 282                                     struct obd_uuid *cluuid);
 283 void class_unlink_export(struct obd_export *exp);
 284
 285 struct obd_import *class_import_get(struct obd_import *);
 286 void class_import_put(struct obd_import *);
 287 struct obd_import *class_new_import(struct obd_device *obd);
 288 void class_destroy_import(struct obd_import *exp);
 289
 290 struct obd_type *class_search_type(const char *name);
 291 struct obd_type *class_get_type(const char *name);
 292 void class_put_type(struct obd_type *type);
 293 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
 294                   struct obd_uuid *cluuid);
 295 int class_disconnect(struct obd_export *exp);
 296 void class_fail_export(struct obd_export *exp);
 297 int class_connected_export(struct obd_export *exp);
 298 void class_disconnect_exports(struct obd_device *obddev);
 299 int class_manual_cleanup(struct obd_device *obd);
 300 void class_disconnect_stale_exports(struct obd_device *,
 301                                     int (*test_export)(struct obd_export *));
 302 static inline enum obd_option exp_flags_from_obd(struct obd_device *obd)
 303 {
 304         return ((obd->obd_fail ? OBD_OPT_FAILOVER : 0) |
 305                 (obd->obd_force ? OBD_OPT_FORCE : 0) |
 306                 (obd->obd_abort_recovery ? OBD_OPT_ABORT_RECOV : 0) |
 307                 0);
 308 }
 309
 310
 311 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_flag valid);
 312 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
 313 void obdo_from_iattr(struct obdo *oa, struct iattr *attr,
 314                      unsigned int ia_valid);
 315 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, obd_flag valid);
 316 void md_from_obdo(struct md_op_data *op_data, struct obdo *oa, obd_flag valid);
 317 void obdo_from_md(struct obdo *oa, struct md_op_data *op_data,
 318                   unsigned int valid);
 319
 320 void obdo_cpu_to_le(struct obdo *dobdo, struct obdo *sobdo);
 321 void obdo_le_to_cpu(struct obdo *dobdo, struct obdo *sobdo);
 322
 323 #define OBT(dev)        (dev)->obd_type
 324 #define OBP(dev, op)    (dev)->obd_type->typ_dt_ops->o_ ## op
 325 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
 326 #define CTXTP(ctxt, op) (ctxt)->loc_logops->lop_##op
 327
 328 /* Ensure obd_setup: used for cleanup which must be called
 329    while obd is stopping */
 330 #define OBD_CHECK_DEV(obd)                                    \
 331 do {                                                        \
 332         if (!(obd)) {                                      \
 333                 CERROR("NULL device\n");                        \
 334                 return -ENODEV;                         \
 335         }                                                      \
 336 } while (0)
 337
 338 /* ensure obd_setup and !obd_stopping */
 339 #define OBD_CHECK_DEV_ACTIVE(obd)                              \
 340 do {                                                        \
 341         OBD_CHECK_DEV(obd);                                  \
 342         if (!(obd)->obd_set_up || (obd)->obd_stopping) {        \
 343                 CERROR("Device %d not setup\n",          \
 344                        (obd)->obd_minor);                      \
 345                 return -ENODEV;                         \
 346         }                                                      \
 347 } while (0)
 348
 349
 350 #if defined (CONFIG_PROC_FS)
 351 #define OBD_COUNTER_OFFSET(op)                            \
 352         ((offsetof(struct obd_ops, o_ ## op) -            \
 353           offsetof(struct obd_ops, o_iocontrol))                \
 354          / sizeof(((struct obd_ops *)(0))->o_iocontrol))
 355
 356 #define OBD_COUNTER_INCREMENT(obdx, op)                    \
 357         if ((obdx)->obd_stats != NULL) {                          \
 358                 unsigned int coffset;                        \
 359                 coffset = (unsigned int)((obdx)->obd_cntr_base) + \
 360                         OBD_COUNTER_OFFSET(op);            \
 361                 LASSERT(coffset < (obdx)->obd_stats->ls_num);     \
 362                 lprocfs_counter_incr((obdx)->obd_stats, coffset); \
 363         }
 364
 365 #define EXP_COUNTER_INCREMENT(export, op)                                   \
 366         if ((export)->exp_obd->obd_stats != NULL) {                       \
 367                 unsigned int coffset;                                   \
 368                 coffset = (unsigned int)((export)->exp_obd->obd_cntr_base) + \
 369                         OBD_COUNTER_OFFSET(op);                       \
 370                 LASSERT(coffset < (export)->exp_obd->obd_stats->ls_num);     \
 371                 lprocfs_counter_incr((export)->exp_obd->obd_stats, coffset); \
 372                 if ((export)->exp_nid_stats != NULL &&                 \
 373                     (export)->exp_nid_stats->nid_stats != NULL)       \
 374                         lprocfs_counter_incr(                           \
 375                                 (export)->exp_nid_stats->nid_stats, coffset);\
 376         }
 377
 378 #define MD_COUNTER_OFFSET(op)                              \
 379         ((offsetof(struct md_ops, m_ ## op) -              \
 380           offsetof(struct md_ops, m_getstatus))          \
 381          / sizeof(((struct md_ops *)(0))->m_getstatus))
 382
 383 #define MD_COUNTER_INCREMENT(obdx, op)                     \
 384         if ((obd)->md_stats != NULL) {                     \
 385                 unsigned int coffset;                       \
 386                 coffset = (unsigned int)((obdx)->md_cntr_base) + \
 387                         MD_COUNTER_OFFSET(op);             \
 388                 LASSERT(coffset < (obdx)->md_stats->ls_num);     \
 389                 lprocfs_counter_incr((obdx)->md_stats, coffset); \
 390         }
 391
 392 #define EXP_MD_COUNTER_INCREMENT(export, op)                             \
 393         if ((export)->exp_obd->obd_stats != NULL) {                       \
 394                 unsigned int coffset;                                   \
 395                 coffset = (unsigned int)((export)->exp_obd->md_cntr_base) +  \
 396                         MD_COUNTER_OFFSET(op);                         \
 397                 LASSERT(coffset < (export)->exp_obd->md_stats->ls_num);      \
 398                 lprocfs_counter_incr((export)->exp_obd->md_stats, coffset);  \
 399                 if ((export)->exp_md_stats != NULL)                       \
 400                         lprocfs_counter_incr(                           \
 401                                 (export)->exp_md_stats, coffset);           \
 402         }
 403
 404 #else
 405 #define OBD_COUNTER_OFFSET(op)
 406 #define OBD_COUNTER_INCREMENT(obd, op)
 407 #define EXP_COUNTER_INCREMENT(exp, op)
 408 #define MD_COUNTER_INCREMENT(obd, op)
 409 #define EXP_MD_COUNTER_INCREMENT(exp, op)
 410 #endif
 411
 412 static inline int lprocfs_nid_ldlm_stats_init(struct nid_stat* tmp)
 413 {
 414         /* Always add in ldlm_stats */
 415         tmp->nid_ldlm_stats = lprocfs_alloc_stats(LDLM_LAST_OPC - LDLM_FIRST_OPC
 416                                                   ,LPROCFS_STATS_FLAG_NOPERCPU);
 417         if (tmp->nid_ldlm_stats == NULL)
 418                 return -ENOMEM;
 419
 420         lprocfs_init_ldlm_stats(tmp->nid_ldlm_stats);
 421
 422         return lprocfs_register_stats(tmp->nid_proc, "ldlm_stats",
 423                                       tmp->nid_ldlm_stats);
 424 }
 425
 426 #define OBD_CHECK_MD_OP(obd, op, err)                      \
 427 do {                                                        \
 428         if (!OBT(obd) || !MDP((obd), op)) {                  \
 429                 if (err)                                        \
 430                         CERROR("md_" #op ": dev %s/%d no operation\n", \
 431                                obd->obd_name, obd->obd_minor);  \
 432                 return err;                                 \
 433         }                                                      \
 434 } while (0)
 435
 436 #define EXP_CHECK_MD_OP(exp, op)                                \
 437 do {                                                        \
 438         if ((exp) == NULL) {                                \
 439                 CERROR("obd_" #op ": NULL export\n");      \
 440                 return -ENODEV;                         \
 441         }                                                      \
 442         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 443                 CERROR("obd_" #op ": cleaned up obd\n");        \
 444                 return -EOPNOTSUPP;                         \
 445         }                                                      \
 446         if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
 447                 CERROR("obd_" #op ": dev %s/%d no operation\n", \
 448                        (exp)->exp_obd->obd_name,                \
 449                        (exp)->exp_obd->obd_minor);            \
 450                 return -EOPNOTSUPP;                         \
 451         }                                                      \
 452 } while (0)
 453
 454
 455 #define OBD_CHECK_DT_OP(obd, op, err)                      \
 456 do {                                                        \
 457         if (!OBT(obd) || !OBP((obd), op)) {                  \
 458                 if (err)                                        \
 459                         CERROR("obd_" #op ": dev %d no operation\n",    \
 460                                obd->obd_minor);          \
 461                 return err;                                 \
 462         }                                                      \
 463 } while (0)
 464
 465 #define EXP_CHECK_DT_OP(exp, op)                                \
 466 do {                                                        \
 467         if ((exp) == NULL) {                                \
 468                 CERROR("obd_" #op ": NULL export\n");      \
 469                 return -ENODEV;                         \
 470         }                                                      \
 471         if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
 472                 CERROR("obd_" #op ": cleaned up obd\n");        \
 473                 return -EOPNOTSUPP;                         \
 474         }                                                      \
 475         if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
 476                 CERROR("obd_" #op ": dev %d no operation\n",    \
 477                        (exp)->exp_obd->obd_minor);            \
 478                 return -EOPNOTSUPP;                         \
 479         }                                                      \
 480 } while (0)
 481
 482 #define CTXT_CHECK_OP(ctxt, op, err)                             \
 483 do {                                                             \
 484         if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {             \
 485                 if (err)                                             \
 486                         CERROR("lop_" #op ": dev %d no operation\n", \
 487                                ctxt->loc_obd->obd_minor);           \
 488                 return err;                                      \
 489         }                                                           \
 490 } while (0)
 491
 492 static inline int class_devno_max(void)
 493 {
 494         return MAX_OBD_DEVICES;
 495 }
 496
 497 static inline int obd_get_info(const struct lu_env *env,
 498                                struct obd_export *exp, __u32 keylen,
 499                                void *key, __u32 *vallen, void *val,
 500                                struct lov_stripe_md *lsm)
 501 {
 502         int rc;
 503
 504         EXP_CHECK_DT_OP(exp, get_info);
 505         EXP_COUNTER_INCREMENT(exp, get_info);
 506
 507         rc = OBP(exp->exp_obd, get_info)(env, exp, keylen, key, vallen, val,
 508                                          lsm);
 509         return rc;
 510 }
 511
 512 static inline int obd_set_info_async(const struct lu_env *env,
 513                                      struct obd_export *exp, obd_count keylen,
 514                                      void *key, obd_count vallen, void *val,
 515                                      struct ptlrpc_request_set *set)
 516 {
 517         int rc;
 518
 519         EXP_CHECK_DT_OP(exp, set_info_async);
 520         EXP_COUNTER_INCREMENT(exp, set_info_async);
 521
 522         rc = OBP(exp->exp_obd, set_info_async)(env, exp, keylen, key, vallen,
 523                                                val, set);
 524         return rc;
 525 }
 526
 527 /*
 528  * obd-lu integration.
 529  *
 530  * Functionality is being moved into new lu_device-based layering, but some
 531  * pieces of configuration process are still based on obd devices.
 532  *
 533  * Specifically, lu_device_type_operations::ldto_device_alloc() methods fully
 534  * subsume ->o_setup() methods of obd devices they replace. The same for
 535  * lu_device_operations::ldo_process_config() and ->o_process_config(). As a
 536  * result, obd_setup() and obd_process_config() branch and call one XOR
 537  * another.
 538  *
 539  * Yet neither lu_device_type_operations::ldto_device_fini() nor
 540  * lu_device_type_operations::ldto_device_free() fully implement the
 541  * functionality of ->o_precleanup() and ->o_cleanup() they override. Hence,
 542  * obd_precleanup() and obd_cleanup() call both lu_device and obd operations.
 543  */
 544
 545 #define DECLARE_LU_VARS(ldt, d)          \
 546         struct lu_device_type *ldt;       \
 547         struct lu_device *d
 548
 549 static inline int obd_setup(struct obd_device *obd, struct lustre_cfg *cfg)
 550 {
 551         int rc;
 552         DECLARE_LU_VARS(ldt, d);
 553
 554         ldt = obd->obd_type->typ_lu;
 555         if (ldt != NULL) {
 556                 struct lu_context  session_ctx;
 557                 struct lu_env env;
 558                 lu_context_init(&session_ctx, LCT_SESSION);
 559                 session_ctx.lc_thread = NULL;
 560                 lu_context_enter(&session_ctx);
 561
 562                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 563                 if (rc == 0) {
 564                         env.le_ses = &session_ctx;
 565                         d = ldt->ldt_ops->ldto_device_alloc(&env, ldt, cfg);
 566                         lu_env_fini(&env);
 567                         if (!IS_ERR(d)) {
 568                                 obd->obd_lu_dev = d;
 569                                 d->ld_obd = obd;
 570                                 rc = 0;
 571                         } else
 572                                 rc = PTR_ERR(d);
 573                 }
 574                 lu_context_exit(&session_ctx);
 575                 lu_context_fini(&session_ctx);
 576
 577         } else {
 578                 OBD_CHECK_DT_OP(obd, setup, -EOPNOTSUPP);
 579                 OBD_COUNTER_INCREMENT(obd, setup);
 580                 rc = OBP(obd, setup)(obd, cfg);
 581         }
 582         return rc;
 583 }
 584
 585 static inline int obd_precleanup(struct obd_device *obd,
 586                                  enum obd_cleanup_stage cleanup_stage)
 587 {
 588         int rc;
 589         DECLARE_LU_VARS(ldt, d);
 590
 591         OBD_CHECK_DEV(obd);
 592         ldt = obd->obd_type->typ_lu;
 593         d = obd->obd_lu_dev;
 594         if (ldt != NULL && d != NULL) {
 595                 if (cleanup_stage == OBD_CLEANUP_EXPORTS) {
 596                         struct lu_env env;
 597
 598                         rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 599                         if (rc == 0) {
 600                                 ldt->ldt_ops->ldto_device_fini(&env, d);
 601                                 lu_env_fini(&env);
 602                         }
 603                 }
 604         }
 605         OBD_CHECK_DT_OP(obd, precleanup, 0);
 606         OBD_COUNTER_INCREMENT(obd, precleanup);
 607
 608         rc = OBP(obd, precleanup)(obd, cleanup_stage);
 609         return rc;
 610 }
 611
 612 static inline int obd_cleanup(struct obd_device *obd)
 613 {
 614         int rc;
 615         DECLARE_LU_VARS(ldt, d);
 616
 617         OBD_CHECK_DEV(obd);
 618
 619         ldt = obd->obd_type->typ_lu;
 620         d = obd->obd_lu_dev;
 621         if (ldt != NULL && d != NULL) {
 622                 struct lu_env env;
 623
 624                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 625                 if (rc == 0) {
 626                         ldt->ldt_ops->ldto_device_free(&env, d);
 627                         lu_env_fini(&env);
 628                         obd->obd_lu_dev = NULL;
 629                 }
 630         }
 631         OBD_CHECK_DT_OP(obd, cleanup, 0);
 632         OBD_COUNTER_INCREMENT(obd, cleanup);
 633
 634         rc = OBP(obd, cleanup)(obd);
 635         return rc;
 636 }
 637
 638 static inline void obd_cleanup_client_import(struct obd_device *obd)
 639 {
 640         /* If we set up but never connected, the
 641            client import will not have been cleaned. */
 642         down_write(&obd->u.cli.cl_sem);
 643         if (obd->u.cli.cl_import) {
 644                 struct obd_import *imp;
 645                 imp = obd->u.cli.cl_import;
 646                 CDEBUG(D_CONFIG, "%s: client import never connected\n",
 647                        obd->obd_name);
 648                 ptlrpc_invalidate_import(imp);
 649                 if (imp->imp_rq_pool) {
 650                         ptlrpc_free_rq_pool(imp->imp_rq_pool);
 651                         imp->imp_rq_pool = NULL;
 652                 }
 653                 client_destroy_import(imp);
 654                 obd->u.cli.cl_import = NULL;
 655         }
 656         up_write(&obd->u.cli.cl_sem);
 657 }
 658
 659 static inline int
 660 obd_process_config(struct obd_device *obd, int datalen, void *data)
 661 {
 662         int rc;
 663         DECLARE_LU_VARS(ldt, d);
 664
 665         OBD_CHECK_DEV(obd);
 666
 667         obd->obd_process_conf = 1;
 668         ldt = obd->obd_type->typ_lu;
 669         d = obd->obd_lu_dev;
 670         if (ldt != NULL && d != NULL) {
 671                 struct lu_env env;
 672
 673                 rc = lu_env_init(&env, ldt->ldt_ctx_tags);
 674                 if (rc == 0) {
 675                         rc = d->ld_ops->ldo_process_config(&env, d, data);
 676                         lu_env_fini(&env);
 677                 }
 678         } else {
 679                 OBD_CHECK_DT_OP(obd, process_config, -EOPNOTSUPP);
 680                 rc = OBP(obd, process_config)(obd, datalen, data);
 681         }
 682         OBD_COUNTER_INCREMENT(obd, process_config);
 683         obd->obd_process_conf = 0;
 684
 685         return rc;
 686 }
 687
 688 /* Pack an in-memory MD struct for storage on disk.
 689  * Returns +ve size of packed MD (0 for free), or -ve error.
 690  *
 691  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 692  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 693  * If @*disk_tgt == NULL, it will be allocated
 694  */
 695 static inline int obd_packmd(struct obd_export *exp,
 696                              struct lov_mds_md **disk_tgt,
 697                              struct lov_stripe_md *mem_src)
 698 {
 699         int rc;
 700
 701         EXP_CHECK_DT_OP(exp, packmd);
 702         EXP_COUNTER_INCREMENT(exp, packmd);
 703
 704         rc = OBP(exp->exp_obd, packmd)(exp, disk_tgt, mem_src);
 705         return rc;
 706 }
 707
 708 static inline int obd_size_diskmd(struct obd_export *exp,
 709                                   struct lov_stripe_md *mem_src)
 710 {
 711         return obd_packmd(exp, NULL, mem_src);
 712 }
 713
 714 static inline int obd_free_diskmd(struct obd_export *exp,
 715                                   struct lov_mds_md **disk_tgt)
 716 {
 717         LASSERT(disk_tgt);
 718         LASSERT(*disk_tgt);
 719         /*
 720          * LU-2590, for caller's convenience, *disk_tgt could be host
 721          * endianness, it needs swab to LE if necessary, while just
 722          * lov_mds_md header needs it for figuring out how much memory
 723          * needs to be freed.
 724          */
 725         if ((cpu_to_le32(LOV_MAGIC) != LOV_MAGIC) &&
 726             (((*disk_tgt)->lmm_magic == LOV_MAGIC_V1) ||
 727              ((*disk_tgt)->lmm_magic == LOV_MAGIC_V3)))
 728                 lustre_swab_lov_mds_md(*disk_tgt);
 729         return obd_packmd(exp, disk_tgt, NULL);
 730 }
 731
 732 /* Unpack an MD struct from disk to in-memory format.
 733  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 734  *
 735  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 736  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 737  * If @*mem_tgt == NULL, it will be allocated
 738  */
 739 static inline int obd_unpackmd(struct obd_export *exp,
 740                                struct lov_stripe_md **mem_tgt,
 741                                struct lov_mds_md *disk_src,
 742                                int disk_len)
 743 {
 744         int rc;
 745
 746         EXP_CHECK_DT_OP(exp, unpackmd);
 747         EXP_COUNTER_INCREMENT(exp, unpackmd);
 748
 749         rc = OBP(exp->exp_obd, unpackmd)(exp, mem_tgt, disk_src, disk_len);
 750         return rc;
 751 }
 752
 753 /* helper functions */
 754 static inline int obd_alloc_memmd(struct obd_export *exp,
 755                                   struct lov_stripe_md **mem_tgt)
 756 {
 757         LASSERT(mem_tgt);
 758         LASSERT(*mem_tgt == NULL);
 759         return obd_unpackmd(exp, mem_tgt, NULL, 0);
 760 }
 761
 762 static inline int obd_free_memmd(struct obd_export *exp,
 763                                  struct lov_stripe_md **mem_tgt)
 764 {
 765         int rc;
 766
 767         LASSERT(mem_tgt);
 768         LASSERT(*mem_tgt);
 769         rc = obd_unpackmd(exp, mem_tgt, NULL, 0);
 770         *mem_tgt = NULL;
 771         return rc;
 772 }
 773
 774 static inline int obd_precreate(struct obd_export *exp)
 775 {
 776         int rc;
 777
 778         EXP_CHECK_DT_OP(exp, precreate);
 779         OBD_COUNTER_INCREMENT(exp->exp_obd, precreate);
 780
 781         rc = OBP(exp->exp_obd, precreate)(exp);
 782         return rc;
 783 }
 784
 785 static inline int obd_create_async(struct obd_export *exp,
 786                                    struct obd_info *oinfo,
 787                                    struct lov_stripe_md **ea,
 788                                    struct obd_trans_info *oti)
 789 {
 790         int rc;
 791
 792         EXP_CHECK_DT_OP(exp, create_async);
 793         EXP_COUNTER_INCREMENT(exp, create_async);
 794
 795         rc = OBP(exp->exp_obd, create_async)(exp, oinfo, ea, oti);
 796         return rc;
 797 }
 798
 799 static inline int obd_create(const struct lu_env *env, struct obd_export *exp,
 800                              struct obdo *obdo, struct lov_stripe_md **ea,
 801                              struct obd_trans_info *oti)
 802 {
 803         int rc;
 804
 805         EXP_CHECK_DT_OP(exp, create);
 806         EXP_COUNTER_INCREMENT(exp, create);
 807
 808         rc = OBP(exp->exp_obd, create)(env, exp, obdo, ea, oti);
 809         return rc;
 810 }
 811
 812 static inline int obd_destroy(const struct lu_env *env, struct obd_export *exp,
 813                               struct obdo *obdo, struct lov_stripe_md *ea,
 814                               struct obd_trans_info *oti,
 815                               struct obd_export *md_exp, void *capa)
 816 {
 817         int rc;
 818
 819         EXP_CHECK_DT_OP(exp, destroy);
 820         EXP_COUNTER_INCREMENT(exp, destroy);
 821
 822         rc = OBP(exp->exp_obd, destroy)(env, exp, obdo, ea, oti, md_exp, capa);
 823         return rc;
 824 }
 825
 826 static inline int obd_getattr(const struct lu_env *env, struct obd_export *exp,
 827                               struct obd_info *oinfo)
 828 {
 829         int rc;
 830
 831         EXP_CHECK_DT_OP(exp, getattr);
 832         EXP_COUNTER_INCREMENT(exp, getattr);
 833
 834         rc = OBP(exp->exp_obd, getattr)(env, exp, oinfo);
 835         return rc;
 836 }
 837
 838 static inline int obd_getattr_async(struct obd_export *exp,
 839                                     struct obd_info *oinfo,
 840                                     struct ptlrpc_request_set *set)
 841 {
 842         int rc;
 843
 844         EXP_CHECK_DT_OP(exp, getattr_async);
 845         EXP_COUNTER_INCREMENT(exp, getattr_async);
 846
 847         rc = OBP(exp->exp_obd, getattr_async)(exp, oinfo, set);
 848         return rc;
 849 }
 850
 851 static inline int obd_setattr(const struct lu_env *env, struct obd_export *exp,
 852                               struct obd_info *oinfo,
 853                               struct obd_trans_info *oti)
 854 {
 855         int rc;
 856
 857         EXP_CHECK_DT_OP(exp, setattr);
 858         EXP_COUNTER_INCREMENT(exp, setattr);
 859
 860         rc = OBP(exp->exp_obd, setattr)(env, exp, oinfo, oti);
 861         return rc;
 862 }
 863
 864 /* This performs all the requests set init/wait/destroy actions. */
 865 static inline int obd_setattr_rqset(struct obd_export *exp,
 866                                     struct obd_info *oinfo,
 867                                     struct obd_trans_info *oti)
 868 {
 869         struct ptlrpc_request_set *set = NULL;
 870         int rc;
 871
 872         EXP_CHECK_DT_OP(exp, setattr_async);
 873         EXP_COUNTER_INCREMENT(exp, setattr_async);
 874
 875         set =  ptlrpc_prep_set();
 876         if (set == NULL)
 877                 return -ENOMEM;
 878
 879         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 880         if (rc == 0)
 881                 rc = ptlrpc_set_wait(set);
 882         ptlrpc_set_destroy(set);
 883         return rc;
 884 }
 885
 886 /* This adds all the requests into @set if @set != NULL, otherwise
 887    all requests are sent asynchronously without waiting for response. */
 888 static inline int obd_setattr_async(struct obd_export *exp,
 889                                     struct obd_info *oinfo,
 890                                     struct obd_trans_info *oti,
 891                                     struct ptlrpc_request_set *set)
 892 {
 893         int rc;
 894
 895         EXP_CHECK_DT_OP(exp, setattr_async);
 896         EXP_COUNTER_INCREMENT(exp, setattr_async);
 897
 898         rc = OBP(exp->exp_obd, setattr_async)(exp, oinfo, oti, set);
 899         return rc;
 900 }
 901
 902 static inline int obd_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
 903                                int priority)
 904 {
 905         struct obd_device *obd = imp->imp_obd;
 906         int rc;
 907
 908         OBD_CHECK_DEV_ACTIVE(obd);
 909         OBD_CHECK_DT_OP(obd, add_conn, -EOPNOTSUPP);
 910         OBD_COUNTER_INCREMENT(obd, add_conn);
 911
 912         rc = OBP(obd, add_conn)(imp, uuid, priority);
 913         return rc;
 914 }
 915
 916 static inline int obd_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
 917 {
 918         struct obd_device *obd = imp->imp_obd;
 919         int rc;
 920
 921         OBD_CHECK_DEV_ACTIVE(obd);
 922         OBD_CHECK_DT_OP(obd, del_conn, -EOPNOTSUPP);
 923         OBD_COUNTER_INCREMENT(obd, del_conn);
 924
 925         rc = OBP(obd, del_conn)(imp, uuid);
 926         return rc;
 927 }
 928
 929 static inline struct obd_uuid *obd_get_uuid(struct obd_export *exp)
 930 {
 931         struct obd_uuid *uuid;
 932
 933         OBD_CHECK_DT_OP(exp->exp_obd, get_uuid, NULL);
 934         EXP_COUNTER_INCREMENT(exp, get_uuid);
 935
 936         uuid = OBP(exp->exp_obd, get_uuid)(exp);
 937         return uuid;
 938 }
 939
 940 /** Create a new /a exp on device /a obd for the uuid /a cluuid
 941  * @param exp New export handle
 942  * @param d Connect data, supported flags are set, flags also understood
 943  *    by obd are returned.
 944  */
 945 static inline int obd_connect(const struct lu_env *env,
 946                               struct obd_export **exp,struct obd_device *obd,
 947                               struct obd_uuid *cluuid,
 948                               struct obd_connect_data *data,
 949                               void *localdata)
 950 {
 951         int rc;
 952         __u64 ocf = data ? data->ocd_connect_flags : 0; /* for post-condition
 953                                                    * check */
 954
 955         OBD_CHECK_DEV_ACTIVE(obd);
 956         OBD_CHECK_DT_OP(obd, connect, -EOPNOTSUPP);
 957         OBD_COUNTER_INCREMENT(obd, connect);
 958
 959         rc = OBP(obd, connect)(env, exp, obd, cluuid, data, localdata);
 960         /* check that only subset is granted */
 961         LASSERT(ergo(data != NULL, (data->ocd_connect_flags & ocf) ==
 962                                     data->ocd_connect_flags));
 963         return rc;
 964 }
 965
 966 static inline int obd_reconnect(const struct lu_env *env,
 967                                 struct obd_export *exp,
 968                                 struct obd_device *obd,
 969                                 struct obd_uuid *cluuid,
 970                                 struct obd_connect_data *d,
 971                                 void *localdata)
 972 {
 973         int rc;
 974         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
 975                                                    * check */
 976
 977         OBD_CHECK_DEV_ACTIVE(obd);
 978         OBD_CHECK_DT_OP(obd, reconnect, 0);
 979         OBD_COUNTER_INCREMENT(obd, reconnect);
 980
 981         rc = OBP(obd, reconnect)(env, exp, obd, cluuid, d, localdata);
 982         /* check that only subset is granted */
 983         LASSERT(ergo(d != NULL,
 984                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
 985         return rc;
 986 }
 987
 988 static inline int obd_disconnect(struct obd_export *exp)
 989 {
 990         int rc;
 991
 992         EXP_CHECK_DT_OP(exp, disconnect);
 993         EXP_COUNTER_INCREMENT(exp, disconnect);
 994
 995         rc = OBP(exp->exp_obd, disconnect)(exp);
 996         return rc;
 997 }
 998
 999 static inline int obd_fid_init(struct obd_device *obd, struct obd_export *exp,
1000                                enum lu_cli_type type)
1001 {
1002         int rc;
1003
1004         OBD_CHECK_DT_OP(obd, fid_init, 0);
1005         OBD_COUNTER_INCREMENT(obd, fid_init);
1006
1007         rc = OBP(obd, fid_init)(obd, exp, type);
1008         return rc;
1009 }
1010
1011 static inline int obd_fid_fini(struct obd_device *obd)
1012 {
1013         int rc;
1014
1015         OBD_CHECK_DT_OP(obd, fid_fini, 0);
1016         OBD_COUNTER_INCREMENT(obd, fid_fini);
1017
1018         rc = OBP(obd, fid_fini)(obd);
1019         return rc;
1020 }
1021
1022 static inline int obd_fid_alloc(struct obd_export *exp,
1023                                 struct lu_fid *fid,
1024                                 struct md_op_data *op_data)
1025 {
1026         int rc;
1027
1028         EXP_CHECK_DT_OP(exp, fid_alloc);
1029         EXP_COUNTER_INCREMENT(exp, fid_alloc);
1030
1031         rc = OBP(exp->exp_obd, fid_alloc)(exp, fid, op_data);
1032         return rc;
1033 }
1034
1035 static inline int obd_ping(const struct lu_env *env, struct obd_export *exp)
1036 {
1037         int rc;
1038
1039         OBD_CHECK_DT_OP(exp->exp_obd, ping, 0);
1040         EXP_COUNTER_INCREMENT(exp, ping);
1041
1042         rc = OBP(exp->exp_obd, ping)(env, exp);
1043         return rc;
1044 }
1045
1046 static inline int obd_pool_new(struct obd_device *obd, char *poolname)
1047 {
1048         int rc;
1049
1050         OBD_CHECK_DT_OP(obd, pool_new, -EOPNOTSUPP);
1051         OBD_COUNTER_INCREMENT(obd, pool_new);
1052
1053         rc = OBP(obd, pool_new)(obd, poolname);
1054         return rc;
1055 }
1056
1057 static inline int obd_pool_del(struct obd_device *obd, char *poolname)
1058 {
1059         int rc;
1060
1061         OBD_CHECK_DT_OP(obd, pool_del, -EOPNOTSUPP);
1062         OBD_COUNTER_INCREMENT(obd, pool_del);
1063
1064         rc = OBP(obd, pool_del)(obd, poolname);
1065         return rc;
1066 }
1067
1068 static inline int obd_pool_add(struct obd_device *obd, char *poolname, char *ostname)
1069 {
1070         int rc;
1071
1072         OBD_CHECK_DT_OP(obd, pool_add, -EOPNOTSUPP);
1073         OBD_COUNTER_INCREMENT(obd, pool_add);
1074
1075         rc = OBP(obd, pool_add)(obd, poolname, ostname);
1076         return rc;
1077 }
1078
1079 static inline int obd_pool_rem(struct obd_device *obd, char *poolname, char *ostname)
1080 {
1081         int rc;
1082
1083         OBD_CHECK_DT_OP(obd, pool_rem, -EOPNOTSUPP);
1084         OBD_COUNTER_INCREMENT(obd, pool_rem);
1085
1086         rc = OBP(obd, pool_rem)(obd, poolname, ostname);
1087         return rc;
1088 }
1089
1090 static inline void obd_getref(struct obd_device *obd)
1091 {
1092         if (OBT(obd) && OBP(obd, getref)) {
1093                 OBD_COUNTER_INCREMENT(obd, getref);
1094                 OBP(obd, getref)(obd);
1095         }
1096 }
1097
1098 static inline void obd_putref(struct obd_device *obd)
1099 {
1100         if (OBT(obd) && OBP(obd, putref)) {
1101                 OBD_COUNTER_INCREMENT(obd, putref);
1102                 OBP(obd, putref)(obd);
1103         }
1104 }
1105
1106 static inline int obd_init_export(struct obd_export *exp)
1107 {
1108         int rc = 0;
1109
1110         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
1111             OBP((exp)->exp_obd, init_export))
1112                 rc = OBP(exp->exp_obd, init_export)(exp);
1113         return rc;
1114 }
1115
1116 static inline int obd_destroy_export(struct obd_export *exp)
1117 {
1118         if ((exp)->exp_obd != NULL && OBT((exp)->exp_obd) &&
1119             OBP((exp)->exp_obd, destroy_export))
1120                 OBP(exp->exp_obd, destroy_export)(exp);
1121         return 0;
1122 }
1123
1124 static inline int obd_extent_calc(struct obd_export *exp,
1125                                   struct lov_stripe_md *md,
1126                                   int cmd, obd_off *offset)
1127 {
1128         int rc;
1129
1130         EXP_CHECK_DT_OP(exp, extent_calc);
1131         rc = OBP(exp->exp_obd, extent_calc)(exp, md, cmd, offset);
1132         return rc;
1133 }
1134
1135 static inline struct dentry *
1136 obd_lvfs_fid2dentry(struct obd_export *exp, struct ost_id *oi, __u32 gen)
1137 {
1138         struct lvfs_run_ctxt *ctxt = &exp->exp_obd->obd_lvfs_ctxt;
1139         LASSERT(exp->exp_obd);
1140
1141         return ctxt->cb_ops.l_fid2dentry(ostid_id(oi), gen, ostid_seq(oi),
1142                                          exp->exp_obd);
1143 }
1144
1145 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1146  * If the cache is older than @max_age we will get a new value from the
1147  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1148 static inline int obd_statfs_async(struct obd_export *exp,
1149                                    struct obd_info *oinfo,
1150                                    __u64 max_age,
1151                                    struct ptlrpc_request_set *rqset)
1152 {
1153         int rc = 0;
1154         struct obd_device *obd;
1155
1156         if (exp == NULL || exp->exp_obd == NULL)
1157                 return -EINVAL;
1158
1159         obd = exp->exp_obd;
1160         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1161         OBD_COUNTER_INCREMENT(obd, statfs);
1162
1163         CDEBUG(D_SUPER, "%s: osfs %p age %llu, max_age %llu\n",
1164                obd->obd_name, &obd->obd_osfs, obd->obd_osfs_age, max_age);
1165         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1166                 rc = OBP(obd, statfs_async)(exp, oinfo, max_age, rqset);
1167         } else {
1168                 CDEBUG(D_SUPER,"%s: use %p cache blocks %llu/%llu objects %llu/%llu\n",
1169                        obd->obd_name, &obd->obd_osfs,
1170                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1171                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1172                 spin_lock(&obd->obd_osfs_lock);
1173                 memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
1174                 spin_unlock(&obd->obd_osfs_lock);
1175                 oinfo->oi_flags |= OBD_STATFS_FROM_CACHE;
1176                 if (oinfo->oi_cb_up)
1177                         oinfo->oi_cb_up(oinfo, 0);
1178         }
1179         return rc;
1180 }
1181
1182 static inline int obd_statfs_rqset(struct obd_export *exp,
1183                                    struct obd_statfs *osfs, __u64 max_age,
1184                                    __u32 flags)
1185 {
1186         struct ptlrpc_request_set *set = NULL;
1187         struct obd_info oinfo = { { { 0 } } };
1188         int rc = 0;
1189
1190         set =  ptlrpc_prep_set();
1191         if (set == NULL)
1192                 return -ENOMEM;
1193
1194         oinfo.oi_osfs = osfs;
1195         oinfo.oi_flags = flags;
1196         rc = obd_statfs_async(exp, &oinfo, max_age, set);
1197         if (rc == 0)
1198                 rc = ptlrpc_set_wait(set);
1199         ptlrpc_set_destroy(set);
1200         return rc;
1201 }
1202
1203 /* @max_age is the oldest time in jiffies that we accept using a cached data.
1204  * If the cache is older than @max_age we will get a new value from the
1205  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
1206 static inline int obd_statfs(const struct lu_env *env, struct obd_export *exp,
1207                              struct obd_statfs *osfs, __u64 max_age,
1208                              __u32 flags)
1209 {
1210         int rc = 0;
1211         struct obd_device *obd = exp->exp_obd;
1212
1213         if (obd == NULL)
1214                 return -EINVAL;
1215
1216         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
1217         OBD_COUNTER_INCREMENT(obd, statfs);
1218
1219         CDEBUG(D_SUPER, "osfs %llu, max_age %llu\n",
1220                obd->obd_osfs_age, max_age);
1221         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
1222                 rc = OBP(obd, statfs)(env, exp, osfs, max_age, flags);
1223                 if (rc == 0) {
1224                         spin_lock(&obd->obd_osfs_lock);
1225                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
1226                         obd->obd_osfs_age = cfs_time_current_64();
1227                         spin_unlock(&obd->obd_osfs_lock);
1228                 }
1229         } else {
1230                 CDEBUG(D_SUPER, "%s: use %p cache blocks %llu/%llu objects %llu/%llu\n",
1231                        obd->obd_name, &obd->obd_osfs,
1232                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
1233                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
1234                 spin_lock(&obd->obd_osfs_lock);
1235                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
1236                 spin_unlock(&obd->obd_osfs_lock);
1237         }
1238         return rc;
1239 }
1240
1241 static inline int obd_sync_rqset(struct obd_export *exp, struct obd_info *oinfo,
1242                                  obd_size start, obd_size end)
1243 {
1244         struct ptlrpc_request_set *set = NULL;
1245         int rc;
1246
1247         OBD_CHECK_DT_OP(exp->exp_obd, sync, -EOPNOTSUPP);
1248         EXP_COUNTER_INCREMENT(exp, sync);
1249
1250         set =  ptlrpc_prep_set();
1251         if (set == NULL)
1252                 return -ENOMEM;
1253
1254         rc = OBP(exp->exp_obd, sync)(NULL, exp, oinfo, start, end, set);
1255         if (rc == 0)
1256                 rc = ptlrpc_set_wait(set);
1257         ptlrpc_set_destroy(set);
1258         return rc;
1259 }
1260
1261 static inline int obd_sync(const struct lu_env *env, struct obd_export *exp,
1262                            struct obd_info *oinfo, obd_size start, obd_size end,
1263                            struct ptlrpc_request_set *set)
1264 {
1265         int rc;
1266
1267         OBD_CHECK_DT_OP(exp->exp_obd, sync, -EOPNOTSUPP);
1268         EXP_COUNTER_INCREMENT(exp, sync);
1269
1270         rc = OBP(exp->exp_obd, sync)(env, exp, oinfo, start, end, set);
1271         return rc;
1272 }
1273
1274 static inline int obd_punch_rqset(struct obd_export *exp,
1275                                   struct obd_info *oinfo,
1276                                   struct obd_trans_info *oti)
1277 {
1278         struct ptlrpc_request_set *set = NULL;
1279         int rc;
1280
1281         EXP_CHECK_DT_OP(exp, punch);
1282         EXP_COUNTER_INCREMENT(exp, punch);
1283
1284         set =  ptlrpc_prep_set();
1285         if (set == NULL)
1286                 return -ENOMEM;
1287
1288         rc = OBP(exp->exp_obd, punch)(NULL, exp, oinfo, oti, set);
1289         if (rc == 0)
1290                 rc = ptlrpc_set_wait(set);
1291         ptlrpc_set_destroy(set);
1292         return rc;
1293 }
1294
1295 static inline int obd_punch(const struct lu_env *env, struct obd_export *exp,
1296                             struct obd_info *oinfo, struct obd_trans_info *oti,
1297                             struct ptlrpc_request_set *rqset)
1298 {
1299         int rc;
1300
1301         EXP_CHECK_DT_OP(exp, punch);
1302         EXP_COUNTER_INCREMENT(exp, punch);
1303
1304         rc = OBP(exp->exp_obd, punch)(env, exp, oinfo, oti, rqset);
1305         return rc;
1306 }
1307
1308 static inline int obd_brw(int cmd, struct obd_export *exp,
1309                           struct obd_info *oinfo, obd_count oa_bufs,
1310                           struct brw_page *pg, struct obd_trans_info *oti)
1311 {
1312         int rc;
1313
1314         EXP_CHECK_DT_OP(exp, brw);
1315         EXP_COUNTER_INCREMENT(exp, brw);
1316
1317         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
1318                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
1319                        "or OBD_BRW_CHECK\n");
1320                 LBUG();
1321         }
1322
1323         rc = OBP(exp->exp_obd, brw)(cmd, exp, oinfo, oa_bufs, pg, oti);
1324         return rc;
1325 }
1326
1327 static inline int obd_preprw(const struct lu_env *env, int cmd,
1328                              struct obd_export *exp, struct obdo *oa,
1329                              int objcount, struct obd_ioobj *obj,
1330                              struct niobuf_remote *remote, int *pages,
1331                              struct niobuf_local *local,
1332                              struct obd_trans_info *oti,
1333                              struct lustre_capa *capa)
1334 {
1335         int rc;
1336
1337         EXP_CHECK_DT_OP(exp, preprw);
1338         EXP_COUNTER_INCREMENT(exp, preprw);
1339
1340         rc = OBP(exp->exp_obd, preprw)(env, cmd, exp, oa, objcount, obj, remote,
1341                                        pages, local, oti, capa);
1342         return rc;
1343 }
1344
1345 static inline int obd_commitrw(const struct lu_env *env, int cmd,
1346                                struct obd_export *exp, struct obdo *oa,
1347                                int objcount, struct obd_ioobj *obj,
1348                                struct niobuf_remote *rnb, int pages,
1349                                struct niobuf_local *local,
1350                                struct obd_trans_info *oti, int rc)
1351 {
1352         EXP_CHECK_DT_OP(exp, commitrw);
1353         EXP_COUNTER_INCREMENT(exp, commitrw);
1354
1355         rc = OBP(exp->exp_obd, commitrw)(env, cmd, exp, oa, objcount, obj,
1356                                          rnb, pages, local, oti, rc);
1357         return rc;
1358 }
1359
1360 static inline int obd_merge_lvb(struct obd_export *exp,
1361                                 struct lov_stripe_md *lsm,
1362                                 struct ost_lvb *lvb, int kms_only)
1363 {
1364         int rc;
1365
1366         EXP_CHECK_DT_OP(exp, merge_lvb);
1367         EXP_COUNTER_INCREMENT(exp, merge_lvb);
1368
1369         rc = OBP(exp->exp_obd, merge_lvb)(exp, lsm, lvb, kms_only);
1370         return rc;
1371 }
1372
1373 static inline int obd_adjust_kms(struct obd_export *exp,
1374                                  struct lov_stripe_md *lsm, obd_off size,
1375                                  int shrink)
1376 {
1377         int rc;
1378
1379         EXP_CHECK_DT_OP(exp, adjust_kms);
1380         EXP_COUNTER_INCREMENT(exp, adjust_kms);
1381
1382         rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
1383         return rc;
1384 }
1385
1386 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
1387                                 int len, void *karg, void *uarg)
1388 {
1389         int rc;
1390
1391         EXP_CHECK_DT_OP(exp, iocontrol);
1392         EXP_COUNTER_INCREMENT(exp, iocontrol);
1393
1394         rc = OBP(exp->exp_obd, iocontrol)(cmd, exp, len, karg, uarg);
1395         return rc;
1396 }
1397
1398 static inline int obd_enqueue_rqset(struct obd_export *exp,
1399                                     struct obd_info *oinfo,
1400                                     struct ldlm_enqueue_info *einfo)
1401 {
1402         struct ptlrpc_request_set *set = NULL;
1403         int rc;
1404
1405         EXP_CHECK_DT_OP(exp, enqueue);
1406         EXP_COUNTER_INCREMENT(exp, enqueue);
1407
1408         set =  ptlrpc_prep_set();
1409         if (set == NULL)
1410                 return -ENOMEM;
1411
1412         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1413         if (rc == 0)
1414                 rc = ptlrpc_set_wait(set);
1415         ptlrpc_set_destroy(set);
1416         return rc;
1417 }
1418
1419 static inline int obd_enqueue(struct obd_export *exp,
1420                               struct obd_info *oinfo,
1421                               struct ldlm_enqueue_info *einfo,
1422                               struct ptlrpc_request_set *set)
1423 {
1424         int rc;
1425
1426         EXP_CHECK_DT_OP(exp, enqueue);
1427         EXP_COUNTER_INCREMENT(exp, enqueue);
1428
1429         rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
1430         return rc;
1431 }
1432
1433 static inline int obd_change_cbdata(struct obd_export *exp,
1434                                     struct lov_stripe_md *lsm,
1435                                     ldlm_iterator_t it, void *data)
1436 {
1437         int rc;
1438
1439         EXP_CHECK_DT_OP(exp, change_cbdata);
1440         EXP_COUNTER_INCREMENT(exp, change_cbdata);
1441
1442         rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
1443         return rc;
1444 }
1445
1446 static inline int obd_find_cbdata(struct obd_export *exp,
1447                                   struct lov_stripe_md *lsm,
1448                                   ldlm_iterator_t it, void *data)
1449 {
1450         int rc;
1451
1452         EXP_CHECK_DT_OP(exp, find_cbdata);
1453         EXP_COUNTER_INCREMENT(exp, find_cbdata);
1454
1455         rc = OBP(exp->exp_obd, find_cbdata)(exp, lsm, it, data);
1456         return rc;
1457 }
1458
1459 static inline int obd_cancel(struct obd_export *exp,
1460                              struct lov_stripe_md *ea, __u32 mode,
1461                              struct lustre_handle *lockh)
1462 {
1463         int rc;
1464
1465         EXP_CHECK_DT_OP(exp, cancel);
1466         EXP_COUNTER_INCREMENT(exp, cancel);
1467
1468         rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
1469         return rc;
1470 }
1471
1472 static inline int obd_cancel_unused(struct obd_export *exp,
1473                                     struct lov_stripe_md *ea,
1474                                     ldlm_cancel_flags_t flags,
1475                                     void *opaque)
1476 {
1477         int rc;
1478
1479         EXP_CHECK_DT_OP(exp, cancel_unused);
1480         EXP_COUNTER_INCREMENT(exp, cancel_unused);
1481
1482         rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
1483         return rc;
1484 }
1485
1486 static inline int obd_pin(struct obd_export *exp, const struct lu_fid *fid,
1487                           struct obd_capa *oc, struct obd_client_handle *handle,
1488                           int flag)
1489 {
1490         int rc;
1491
1492         EXP_CHECK_DT_OP(exp, pin);
1493         EXP_COUNTER_INCREMENT(exp, pin);
1494
1495         rc = OBP(exp->exp_obd, pin)(exp, fid, oc, handle, flag);
1496         return rc;
1497 }
1498
1499 static inline int obd_unpin(struct obd_export *exp,
1500                             struct obd_client_handle *handle, int flag)
1501 {
1502         int rc;
1503
1504         EXP_CHECK_DT_OP(exp, unpin);
1505         EXP_COUNTER_INCREMENT(exp, unpin);
1506
1507         rc = OBP(exp->exp_obd, unpin)(exp, handle, flag);
1508         return rc;
1509 }
1510
1511
1512 static inline void obd_import_event(struct obd_device *obd,
1513                                     struct obd_import *imp,
1514                                     enum obd_import_event event)
1515 {
1516         if (!obd) {
1517                 CERROR("NULL device\n");
1518                 return;
1519         }
1520         if (obd->obd_set_up && OBP(obd, import_event)) {
1521                 OBD_COUNTER_INCREMENT(obd, import_event);
1522                 OBP(obd, import_event)(obd, imp, event);
1523         }
1524 }
1525
1526 static inline int obd_llog_connect(struct obd_export *exp,
1527                                    struct llogd_conn_body *body)
1528 {
1529         int rc;
1530
1531         OBD_CHECK_DT_OP(exp->exp_obd, llog_connect, 0);
1532         EXP_COUNTER_INCREMENT(exp, llog_connect);
1533
1534         rc = OBP(exp->exp_obd, llog_connect)(exp, body);
1535         return rc;
1536 }
1537
1538
1539 static inline int obd_notify(struct obd_device *obd,
1540                              struct obd_device *watched,
1541                              enum obd_notify_event ev,
1542                              void *data)
1543 {
1544         int rc;
1545
1546         OBD_CHECK_DEV(obd);
1547
1548         /* the check for async_recov is a complete hack - I'm hereby
1549            overloading the meaning to also mean "this was called from
1550            mds_postsetup".  I know that my mds is able to handle notifies
1551            by this point, and it needs to get them to execute mds_postrecov. */
1552         if (!obd->obd_set_up && !obd->obd_async_recov) {
1553                 CDEBUG(D_HA, "obd %s not set up\n", obd->obd_name);
1554                 return -EINVAL;
1555         }
1556
1557         if (!OBP(obd, notify)) {
1558                 CDEBUG(D_HA, "obd %s has no notify handler\n", obd->obd_name);
1559                 return -ENOSYS;
1560         }
1561
1562         OBD_COUNTER_INCREMENT(obd, notify);
1563         rc = OBP(obd, notify)(obd, watched, ev, data);
1564         return rc;
1565 }
1566
1567 static inline int obd_notify_observer(struct obd_device *observer,
1568                                       struct obd_device *observed,
1569                                       enum obd_notify_event ev,
1570                                       void *data)
1571 {
1572         int rc1;
1573         int rc2;
1574
1575         struct obd_notify_upcall *onu;
1576
1577         if (observer->obd_observer)
1578                 rc1 = obd_notify(observer->obd_observer, observed, ev, data);
1579         else
1580                 rc1 = 0;
1581         /*
1582          * Also, call non-obd listener, if any
1583          */
1584         onu = &observer->obd_upcall;
1585         if (onu->onu_upcall != NULL)
1586                 rc2 = onu->onu_upcall(observer, observed, ev,
1587                                       onu->onu_owner, NULL);
1588         else
1589                 rc2 = 0;
1590
1591         return rc1 ? rc1 : rc2;
1592 }
1593
1594 static inline int obd_quotacheck(struct obd_export *exp,
1595                                  struct obd_quotactl *oqctl)
1596 {
1597         int rc;
1598
1599         EXP_CHECK_DT_OP(exp, quotacheck);
1600         EXP_COUNTER_INCREMENT(exp, quotacheck);
1601
1602         rc = OBP(exp->exp_obd, quotacheck)(exp->exp_obd, exp, oqctl);
1603         return rc;
1604 }
1605
1606 static inline int obd_quotactl(struct obd_export *exp,
1607                                struct obd_quotactl *oqctl)
1608 {
1609         int rc;
1610
1611         EXP_CHECK_DT_OP(exp, quotactl);
1612         EXP_COUNTER_INCREMENT(exp, quotactl);
1613
1614         rc = OBP(exp->exp_obd, quotactl)(exp->exp_obd, exp, oqctl);
1615         return rc;
1616 }
1617
1618 static inline int obd_health_check(const struct lu_env *env,
1619                                    struct obd_device *obd)
1620 {
1621         /* returns: 0 on healthy
1622          *       >0 on unhealthy + reason code/flag
1623          *          however the only supported reason == 1 right now
1624          *          We'll need to define some better reasons
1625          *          or flags in the future.
1626          *       <0 on error
1627          */
1628         int rc;
1629
1630         /* don't use EXP_CHECK_DT_OP, because NULL method is normal here */
1631         if (obd == NULL || !OBT(obd)) {
1632                 CERROR("cleaned up obd\n");
1633                 return -EOPNOTSUPP;
1634         }
1635         if (!obd->obd_set_up || obd->obd_stopping)
1636                 return 0;
1637         if (!OBP(obd, health_check))
1638                 return 0;
1639
1640         rc = OBP(obd, health_check)(env, obd);
1641         return rc;
1642 }
1643
1644 static inline int obd_register_observer(struct obd_device *obd,
1645                                         struct obd_device *observer)
1646 {
1647         OBD_CHECK_DEV(obd);
1648         down_write(&obd->obd_observer_link_sem);
1649         if (obd->obd_observer && observer) {
1650                 up_write(&obd->obd_observer_link_sem);
1651                 return -EALREADY;
1652         }
1653         obd->obd_observer = observer;
1654         up_write(&obd->obd_observer_link_sem);
1655         return 0;
1656 }
1657
1658 static inline int obd_pin_observer(struct obd_device *obd,
1659                                    struct obd_device **observer)
1660 {
1661         down_read(&obd->obd_observer_link_sem);
1662         if (!obd->obd_observer) {
1663                 *observer = NULL;
1664                 up_read(&obd->obd_observer_link_sem);
1665                 return -ENOENT;
1666         }
1667         *observer = obd->obd_observer;
1668         return 0;
1669 }
1670
1671 static inline int obd_unpin_observer(struct obd_device *obd)
1672 {
1673         up_read(&obd->obd_observer_link_sem);
1674         return 0;
1675 }
1676
1677 #if 0
1678 static inline int obd_register_page_removal_cb(struct obd_export *exp,
1679                                                obd_page_removal_cb_t cb,
1680                                                obd_pin_extent_cb pin_cb)
1681 {
1682         int rc;
1683
1684         OBD_CHECK_DT_OP(exp->exp_obd, register_page_removal_cb, 0);
1685         OBD_COUNTER_INCREMENT(exp->exp_obd, register_page_removal_cb);
1686
1687         rc = OBP(exp->exp_obd, register_page_removal_cb)(exp, cb, pin_cb);
1688         return rc;
1689 }
1690
1691 static inline int obd_unregister_page_removal_cb(struct obd_export *exp,
1692                                                  obd_page_removal_cb_t cb)
1693 {
1694         int rc;
1695
1696         OBD_CHECK_DT_OP(exp->exp_obd, unregister_page_removal_cb, 0);
1697         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_page_removal_cb);
1698
1699         rc = OBP(exp->exp_obd, unregister_page_removal_cb)(exp, cb);
1700         return rc;
1701 }
1702
1703 static inline int obd_register_lock_cancel_cb(struct obd_export *exp,
1704                                               obd_lock_cancel_cb cb)
1705 {
1706         int rc;
1707
1708         OBD_CHECK_DT_OP(exp->exp_obd, register_lock_cancel_cb, 0);
1709         OBD_COUNTER_INCREMENT(exp->exp_obd, register_lock_cancel_cb);
1710
1711         rc = OBP(exp->exp_obd, register_lock_cancel_cb)(exp, cb);
1712         return rc;
1713 }
1714
1715 static inline int obd_unregister_lock_cancel_cb(struct obd_export *exp,
1716                                                  obd_lock_cancel_cb cb)
1717 {
1718         int rc;
1719
1720         OBD_CHECK_DT_OP(exp->exp_obd, unregister_lock_cancel_cb, 0);
1721         OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_lock_cancel_cb);
1722
1723         rc = OBP(exp->exp_obd, unregister_lock_cancel_cb)(exp, cb);
1724         return rc;
1725 }
1726 #endif
1727
1728 /* metadata helpers */
1729 static inline int md_getstatus(struct obd_export *exp,
1730                                struct lu_fid *fid, struct obd_capa **pc)
1731 {
1732         int rc;
1733
1734         EXP_CHECK_MD_OP(exp, getstatus);
1735         EXP_MD_COUNTER_INCREMENT(exp, getstatus);
1736         rc = MDP(exp->exp_obd, getstatus)(exp, fid, pc);
1737         return rc;
1738 }
1739
1740 static inline int md_getattr(struct obd_export *exp, struct md_op_data *op_data,
1741                              struct ptlrpc_request **request)
1742 {
1743         int rc;
1744
1745         EXP_CHECK_MD_OP(exp, getattr);
1746         EXP_MD_COUNTER_INCREMENT(exp, getattr);
1747         rc = MDP(exp->exp_obd, getattr)(exp, op_data, request);
1748         return rc;
1749 }
1750
1751 static inline int md_null_inode(struct obd_export *exp,
1752                                    const struct lu_fid *fid)
1753 {
1754         int rc;
1755
1756         EXP_CHECK_MD_OP(exp, null_inode);
1757         EXP_MD_COUNTER_INCREMENT(exp, null_inode);
1758         rc = MDP(exp->exp_obd, null_inode)(exp, fid);
1759         return rc;
1760 }
1761
1762 static inline int md_find_cbdata(struct obd_export *exp,
1763                                  const struct lu_fid *fid,
1764                                  ldlm_iterator_t it, void *data)
1765 {
1766         int rc;
1767
1768         EXP_CHECK_MD_OP(exp, find_cbdata);
1769         EXP_MD_COUNTER_INCREMENT(exp, find_cbdata);
1770         rc = MDP(exp->exp_obd, find_cbdata)(exp, fid, it, data);
1771         return rc;
1772 }
1773
1774 static inline int md_close(struct obd_export *exp, struct md_op_data *op_data,
1775                            struct md_open_data *mod,
1776                            struct ptlrpc_request **request)
1777 {
1778         int rc;
1779
1780         EXP_CHECK_MD_OP(exp, close);
1781         EXP_MD_COUNTER_INCREMENT(exp, close);
1782         rc = MDP(exp->exp_obd, close)(exp, op_data, mod, request);
1783         return rc;
1784 }
1785
1786 static inline int md_create(struct obd_export *exp, struct md_op_data *op_data,
1787                             const void *data, int datalen, int mode, __u32 uid,
1788                             __u32 gid, cfs_cap_t cap_effective, __u64 rdev,
1789                             struct ptlrpc_request **request)
1790 {
1791         int rc;
1792
1793         EXP_CHECK_MD_OP(exp, create);
1794         EXP_MD_COUNTER_INCREMENT(exp, create);
1795         rc = MDP(exp->exp_obd, create)(exp, op_data, data, datalen, mode,
1796                                        uid, gid, cap_effective, rdev, request);
1797         return rc;
1798 }
1799
1800 static inline int md_done_writing(struct obd_export *exp,
1801                                   struct md_op_data *op_data,
1802                                   struct md_open_data *mod)
1803 {
1804         int rc;
1805
1806         EXP_CHECK_MD_OP(exp, done_writing);
1807         EXP_MD_COUNTER_INCREMENT(exp, done_writing);
1808         rc = MDP(exp->exp_obd, done_writing)(exp, op_data, mod);
1809         return rc;
1810 }
1811
1812 static inline int md_enqueue(struct obd_export *exp,
1813                              struct ldlm_enqueue_info *einfo,
1814                              struct lookup_intent *it,
1815                              struct md_op_data *op_data,
1816                              struct lustre_handle *lockh,
1817                              void *lmm, int lmmsize,
1818                              struct ptlrpc_request **req,
1819                              __u64 extra_lock_flags)
1820 {
1821         int rc;
1822
1823         EXP_CHECK_MD_OP(exp, enqueue);
1824         EXP_MD_COUNTER_INCREMENT(exp, enqueue);
1825         rc = MDP(exp->exp_obd, enqueue)(exp, einfo, it, op_data, lockh,
1826                                         lmm, lmmsize, req, extra_lock_flags);
1827         return rc;
1828 }
1829
1830 static inline int md_getattr_name(struct obd_export *exp,
1831                                   struct md_op_data *op_data,
1832                                   struct ptlrpc_request **request)
1833 {
1834         int rc;
1835
1836         EXP_CHECK_MD_OP(exp, getattr_name);
1837         EXP_MD_COUNTER_INCREMENT(exp, getattr_name);
1838         rc = MDP(exp->exp_obd, getattr_name)(exp, op_data, request);
1839         return rc;
1840 }
1841
1842 static inline int md_intent_lock(struct obd_export *exp,
1843                                  struct md_op_data *op_data, void *lmm,
1844                                  int lmmsize, struct lookup_intent *it,
1845                                  int lookup_flags, struct ptlrpc_request **reqp,
1846                                  ldlm_blocking_callback cb_blocking,
1847                                  __u64 extra_lock_flags)
1848 {
1849         int rc;
1850
1851         EXP_CHECK_MD_OP(exp, intent_lock);
1852         EXP_MD_COUNTER_INCREMENT(exp, intent_lock);
1853         rc = MDP(exp->exp_obd, intent_lock)(exp, op_data, lmm, lmmsize,
1854                                             it, lookup_flags, reqp, cb_blocking,
1855                                             extra_lock_flags);
1856         return rc;
1857 }
1858
1859 static inline int md_link(struct obd_export *exp, struct md_op_data *op_data,
1860                           struct ptlrpc_request **request)
1861 {
1862         int rc;
1863
1864         EXP_CHECK_MD_OP(exp, link);
1865         EXP_MD_COUNTER_INCREMENT(exp, link);
1866         rc = MDP(exp->exp_obd, link)(exp, op_data, request);
1867         return rc;
1868 }
1869
1870 static inline int md_rename(struct obd_export *exp, struct md_op_data *op_data,
1871                             const char *old, int oldlen, const char *new,
1872                             int newlen, struct ptlrpc_request **request)
1873 {
1874         int rc;
1875
1876         EXP_CHECK_MD_OP(exp, rename);
1877         EXP_MD_COUNTER_INCREMENT(exp, rename);
1878         rc = MDP(exp->exp_obd, rename)(exp, op_data, old, oldlen, new,
1879                                        newlen, request);
1880         return rc;
1881 }
1882
1883 static inline int md_is_subdir(struct obd_export *exp,
1884                                const struct lu_fid *pfid,
1885                                const struct lu_fid *cfid,
1886                                struct ptlrpc_request **request)
1887 {
1888         int rc;
1889
1890         EXP_CHECK_MD_OP(exp, is_subdir);
1891         EXP_MD_COUNTER_INCREMENT(exp, is_subdir);
1892         rc = MDP(exp->exp_obd, is_subdir)(exp, pfid, cfid, request);
1893         return rc;
1894 }
1895
1896 static inline int md_setattr(struct obd_export *exp, struct md_op_data *op_data,
1897                              void *ea, int ealen, void *ea2, int ea2len,
1898                              struct ptlrpc_request **request,
1899                              struct md_open_data **mod)
1900 {
1901         int rc;
1902
1903         EXP_CHECK_MD_OP(exp, setattr);
1904         EXP_MD_COUNTER_INCREMENT(exp, setattr);
1905         rc = MDP(exp->exp_obd, setattr)(exp, op_data, ea, ealen,
1906                                         ea2, ea2len, request, mod);
1907         return rc;
1908 }
1909
1910 static inline int md_sync(struct obd_export *exp, const struct lu_fid *fid,
1911                           struct obd_capa *oc, struct ptlrpc_request **request)
1912 {
1913         int rc;
1914
1915         EXP_CHECK_MD_OP(exp, sync);
1916         EXP_MD_COUNTER_INCREMENT(exp, sync);
1917         rc = MDP(exp->exp_obd, sync)(exp, fid, oc, request);
1918         return rc;
1919 }
1920
1921 static inline int md_readpage(struct obd_export *exp, struct md_op_data *opdata,
1922                               struct page **pages,
1923                               struct ptlrpc_request **request)
1924 {
1925         int rc;
1926
1927         EXP_CHECK_MD_OP(exp, readpage);
1928         EXP_MD_COUNTER_INCREMENT(exp, readpage);
1929         rc = MDP(exp->exp_obd, readpage)(exp, opdata, pages, request);
1930         return rc;
1931 }
1932
1933 static inline int md_unlink(struct obd_export *exp, struct md_op_data *op_data,
1934                             struct ptlrpc_request **request)
1935 {
1936         int rc;
1937
1938         EXP_CHECK_MD_OP(exp, unlink);
1939         EXP_MD_COUNTER_INCREMENT(exp, unlink);
1940         rc = MDP(exp->exp_obd, unlink)(exp, op_data, request);
1941         return rc;
1942 }
1943
1944 static inline int md_get_lustre_md(struct obd_export *exp,
1945                                    struct ptlrpc_request *req,
1946                                    struct obd_export *dt_exp,
1947                                    struct obd_export *md_exp,
1948                                    struct lustre_md *md)
1949 {
1950         EXP_CHECK_MD_OP(exp, get_lustre_md);
1951         EXP_MD_COUNTER_INCREMENT(exp, get_lustre_md);
1952         return MDP(exp->exp_obd, get_lustre_md)(exp, req, dt_exp, md_exp, md);
1953 }
1954
1955 static inline int md_free_lustre_md(struct obd_export *exp,
1956                                     struct lustre_md *md)
1957 {
1958         EXP_CHECK_MD_OP(exp, free_lustre_md);
1959         EXP_MD_COUNTER_INCREMENT(exp, free_lustre_md);
1960         return MDP(exp->exp_obd, free_lustre_md)(exp, md);
1961 }
1962
1963 static inline int md_setxattr(struct obd_export *exp,
1964                               const struct lu_fid *fid, struct obd_capa *oc,
1965                               obd_valid valid, const char *name,
1966                               const char *input, int input_size,
1967                               int output_size, int flags, __u32 suppgid,
1968                               struct ptlrpc_request **request)
1969 {
1970         EXP_CHECK_MD_OP(exp, setxattr);
1971         EXP_MD_COUNTER_INCREMENT(exp, setxattr);
1972         return MDP(exp->exp_obd, setxattr)(exp, fid, oc, valid, name, input,
1973                                            input_size, output_size, flags,
1974                                            suppgid, request);
1975 }
1976
1977 static inline int md_getxattr(struct obd_export *exp,
1978                               const struct lu_fid *fid, struct obd_capa *oc,
1979                               obd_valid valid, const char *name,
1980                               const char *input, int input_size,
1981                               int output_size, int flags,
1982                               struct ptlrpc_request **request)
1983 {
1984         EXP_CHECK_MD_OP(exp, getxattr);
1985         EXP_MD_COUNTER_INCREMENT(exp, getxattr);
1986         return MDP(exp->exp_obd, getxattr)(exp, fid, oc, valid, name, input,
1987                                            input_size, output_size, flags,
1988                                            request);
1989 }
1990
1991 static inline int md_set_open_replay_data(struct obd_export *exp,
1992                                           struct obd_client_handle *och,
1993                                           struct lookup_intent *it)
1994 {
1995         EXP_CHECK_MD_OP(exp, set_open_replay_data);
1996         EXP_MD_COUNTER_INCREMENT(exp, set_open_replay_data);
1997         return MDP(exp->exp_obd, set_open_replay_data)(exp, och, it);
1998 }
1999
2000 static inline int md_clear_open_replay_data(struct obd_export *exp,
2001                                             struct obd_client_handle *och)
2002 {
2003         EXP_CHECK_MD_OP(exp, clear_open_replay_data);
2004         EXP_MD_COUNTER_INCREMENT(exp, clear_open_replay_data);
2005         return MDP(exp->exp_obd, clear_open_replay_data)(exp, och);
2006 }
2007
2008 static inline int md_set_lock_data(struct obd_export *exp,
2009                                    __u64 *lockh, void *data, __u64 *bits)
2010 {
2011         EXP_CHECK_MD_OP(exp, set_lock_data);
2012         EXP_MD_COUNTER_INCREMENT(exp, set_lock_data);
2013         return MDP(exp->exp_obd, set_lock_data)(exp, lockh, data, bits);
2014 }
2015
2016 static inline int md_cancel_unused(struct obd_export *exp,
2017                                    const struct lu_fid *fid,
2018                                    ldlm_policy_data_t *policy,
2019                                    ldlm_mode_t mode,
2020                                    ldlm_cancel_flags_t flags,
2021                                    void *opaque)
2022 {
2023         int rc;
2024
2025         EXP_CHECK_MD_OP(exp, cancel_unused);
2026         EXP_MD_COUNTER_INCREMENT(exp, cancel_unused);
2027
2028         rc = MDP(exp->exp_obd, cancel_unused)(exp, fid, policy, mode,
2029                                               flags, opaque);
2030         return rc;
2031 }
2032
2033 static inline ldlm_mode_t md_lock_match(struct obd_export *exp, __u64 flags,
2034                                         const struct lu_fid *fid,
2035                                         ldlm_type_t type,
2036                                         ldlm_policy_data_t *policy,
2037                                         ldlm_mode_t mode,
2038                                         struct lustre_handle *lockh)
2039 {
2040         EXP_CHECK_MD_OP(exp, lock_match);
2041         EXP_MD_COUNTER_INCREMENT(exp, lock_match);
2042         return MDP(exp->exp_obd, lock_match)(exp, flags, fid, type,
2043                                              policy, mode, lockh);
2044 }
2045
2046 static inline int md_init_ea_size(struct obd_export *exp, int easize,
2047                                   int def_asize, int cookiesize,
2048                                   int def_cookiesize)
2049 {
2050         EXP_CHECK_MD_OP(exp, init_ea_size);
2051         EXP_MD_COUNTER_INCREMENT(exp, init_ea_size);
2052         return MDP(exp->exp_obd, init_ea_size)(exp, easize, def_asize,
2053                                                cookiesize, def_cookiesize);
2054 }
2055
2056 static inline int md_get_remote_perm(struct obd_export *exp,
2057                                      const struct lu_fid *fid,
2058                                      struct obd_capa *oc, __u32 suppgid,
2059                                      struct ptlrpc_request **request)
2060 {
2061         EXP_CHECK_MD_OP(exp, get_remote_perm);
2062         EXP_MD_COUNTER_INCREMENT(exp, get_remote_perm);
2063         return MDP(exp->exp_obd, get_remote_perm)(exp, fid, oc, suppgid,
2064                                                   request);
2065 }
2066
2067 static inline int md_renew_capa(struct obd_export *exp, struct obd_capa *ocapa,
2068                                 renew_capa_cb_t cb)
2069 {
2070         int rc;
2071
2072         EXP_CHECK_MD_OP(exp, renew_capa);
2073         EXP_MD_COUNTER_INCREMENT(exp, renew_capa);
2074         rc = MDP(exp->exp_obd, renew_capa)(exp, ocapa, cb);
2075         return rc;
2076 }
2077
2078 static inline int md_unpack_capa(struct obd_export *exp,
2079                                  struct ptlrpc_request *req,
2080                                  const struct req_msg_field *field,
2081                                  struct obd_capa **oc)
2082 {
2083         int rc;
2084
2085         EXP_CHECK_MD_OP(exp, unpack_capa);
2086         EXP_MD_COUNTER_INCREMENT(exp, unpack_capa);
2087         rc = MDP(exp->exp_obd, unpack_capa)(exp, req, field, oc);
2088         return rc;
2089 }
2090
2091 static inline int md_intent_getattr_async(struct obd_export *exp,
2092                                           struct md_enqueue_info *minfo,
2093                                           struct ldlm_enqueue_info *einfo)
2094 {
2095         int rc;
2096
2097         EXP_CHECK_MD_OP(exp, intent_getattr_async);
2098         EXP_MD_COUNTER_INCREMENT(exp, intent_getattr_async);
2099         rc = MDP(exp->exp_obd, intent_getattr_async)(exp, minfo, einfo);
2100         return rc;
2101 }
2102
2103 static inline int md_revalidate_lock(struct obd_export *exp,
2104                                      struct lookup_intent *it,
2105                                      struct lu_fid *fid, __u64 *bits)
2106 {
2107         int rc;
2108
2109         EXP_CHECK_MD_OP(exp, revalidate_lock);
2110         EXP_MD_COUNTER_INCREMENT(exp, revalidate_lock);
2111         rc = MDP(exp->exp_obd, revalidate_lock)(exp, it, fid, bits);
2112         return rc;
2113 }
2114
2115
2116 /* OBD Metadata Support */
2117
2118 extern int obd_init_caches(void);
2119 extern void obd_cleanup_caches(void);
2120
2121 /* support routines */
2122 extern struct kmem_cache *obdo_cachep;
2123
2124 #define OBDO_ALLOC(ptr)                                                \
2125 do {                                                                      \
2126         OBD_SLAB_ALLOC_PTR_GFP((ptr), obdo_cachep, GFP_NOFS);             \
2127 } while(0)
2128
2129 #define OBDO_FREE(ptr)                                                  \
2130 do {                                                                      \
2131         OBD_SLAB_FREE_PTR((ptr), obdo_cachep);                          \
2132 } while(0)
2133
2134
2135 static inline void obdo2fid(struct obdo *oa, struct lu_fid *fid)
2136 {
2137         /* something here */
2138 }
2139
2140 static inline void fid2obdo(struct lu_fid *fid, struct obdo *oa)
2141 {
2142         /* something here */
2143 }
2144
2145 typedef int (*register_lwp_cb)(void *data);
2146
2147 struct lwp_register_item {
2148         struct obd_export **lri_exp;
2149         register_lwp_cb     lri_cb_func;
2150         void               *lri_cb_data;
2151         struct list_head            lri_list;
2152         char                lri_name[MTI_NAME_MAXLEN];
2153 };
2154
2155 /* I'm as embarrassed about this as you are.
2156  *
2157  * <shaver> // XXX do not look into _superhack with remaining eye
2158  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
2159 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
2160
2161 /* obd_mount.c */
2162
2163 /* sysctl.c */
2164 extern void obd_sysctl_init (void);
2165 extern void obd_sysctl_clean (void);
2166
2167 /* uuid.c  */
2168 typedef __u8 class_uuid_t[16];
2169 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
2170
2171 /* lustre_peer.c    */
2172 int lustre_uuid_to_peer(const char *uuid, lnet_nid_t *peer_nid, int index);
2173 int class_add_uuid(const char *uuid, __u64 nid);
2174 int class_del_uuid (const char *uuid);
2175 int class_check_uuid(struct obd_uuid *uuid, __u64 nid);
2176 void class_init_uuidlist(void);
2177 void class_exit_uuidlist(void);
2178
2179 /* mea.c */
2180 int mea_name2idx(struct lmv_stripe_md *mea, const char *name, int namelen);
2181 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
2182
2183 /* class_obd.c */
2184 extern char obd_jobid_node[];
2185
2186 /* prng.c */
2187 #define ll_generate_random_uuid(uuid_out) cfs_get_random_bytes(uuid_out, sizeof(class_uuid_t))
2188
2189 #endif /* __LINUX_OBD_CLASS_H */