lustre/include/obd_class.h

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