lustre/cobd/cache_obd.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  *  Copyright (c) 2002 Cluster File Systems, Inc. <info@clusterfs.com>
   5  *
   6  *   This file is part of Lustre, http://www.lustre.org.
   7  *
   8  *   Lustre is free software; you can redistribute it and/or
   9  *   modify it under the terms of version 2 of the GNU General Public
  10  *   License as published by the Free Software Foundation.
  11  *
  12  *   Lustre is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *   GNU General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU General Public License
  18  *   along with Lustre; if not, write to the Free Software
  19  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  */
  21
  22 #define DEBUG_SUBSYSTEM S_COBD
  23
  24 #include <linux/version.h>
  25 #include <linux/init.h>
  26 #include <linux/obd_support.h>
  27 #include <linux/lustre_lib.h>
  28 #include <linux/lustre_net.h>
  29 #include <linux/lustre_idl.h>
  30 #include <linux/lustre_log.h>
  31 #include <linux/lustre_mds.h>
  32 #include <linux/obd_class.h>
  33 #include <linux/obd_cache.h>
  34
  35 static int cobd_attach(struct obd_device *obd, obd_count len, void *buf)
  36 {
  37         struct lprocfs_static_vars lvars;
  38
  39         lprocfs_init_vars(cobd, &lvars);
  40         return lprocfs_obd_attach(obd, lvars.obd_vars);
  41 }
  42
  43 static int cobd_detach(struct obd_device *obd)
  44 {
  45         return lprocfs_obd_detach(obd);
  46 }
  47
  48 static int connect_to_obd(char *name, struct lustre_handle *conn)
  49 {
  50         struct obd_uuid   obd_uuid;
  51         struct obd_device *obd;
  52         int    rc = 0;
  53         ENTRY;
  54
  55         obd = class_name2obd(name);
  56         if (obd == NULL) {
  57                 CERROR("%s: unable to find a client for obd: %s\n",
  58                        obd->obd_name, name);
  59                 RETURN(-EINVAL);
  60         }
  61         rc = obd_connect(conn, obd, &obd_uuid, 0);
  62         RETURN(rc);
  63 }
  64
  65 static int cobd_setup(struct obd_device *obd, obd_count len, void *buf)
  66 {
  67         struct lustre_cfg *lcfg = (struct lustre_cfg *)buf;
  68         struct cache_obd  *cobd = &obd->u.cobd;
  69 #if 0
  70         struct lustre_handle master_conn = {0,};
  71 #endif
  72         struct lustre_handle cache_conn = {0,};
  73         struct obd_device *master;
  74         struct obd_device *cache;
  75         int rc;
  76         ENTRY;
  77
  78         if (lcfg->lcfg_inllen1 == 0 || lcfg->lcfg_inlbuf1 == NULL) {
  79                 CERROR("%s: setup requires master device name\n",
  80                        obd->obd_name);
  81                 RETURN(-EINVAL);
  82         }
  83
  84         master = class_name2obd(lcfg->lcfg_inlbuf1);
  85         if (master == NULL) {
  86                 CERROR("%s: unable to find a client for master: %s\n",
  87                        obd->obd_name, lcfg->lcfg_inlbuf1);
  88                 RETURN(-EINVAL);
  89         }
  90
  91         if (lcfg->lcfg_inllen2 == 0 || lcfg->lcfg_inlbuf2 == NULL) {
  92                 CERROR("%s: setup requires cache device name\n", obd->obd_name);
  93                 RETURN(-EINVAL);
  94         }
  95
  96         cache = class_name2obd(lcfg->lcfg_inlbuf2);
  97         if (cache == NULL) {
  98                 CERROR("%s: unable to find a client for cache: %s\n",
  99                        obd->obd_name, lcfg->lcfg_inlbuf2);
 100                 RETURN(-EINVAL);
 101         }
 102
 103         OBD_ALLOC(cobd->master_name, strlen(lcfg->lcfg_inlbuf1) + 1);
 104         if (!cobd->master_name)
 105                 GOTO(exit, rc = -ENOMEM);
 106         memcpy(cobd->master_name, lcfg->lcfg_inlbuf1,
 107                strlen(lcfg->lcfg_inlbuf1));
 108
 109         OBD_ALLOC(cobd->cache_name, strlen(lcfg->lcfg_inlbuf2) + 1);
 110         if (!cobd->cache_name)
 111                 GOTO(exit, rc = -ENOMEM);
 112         memcpy(cobd->cache_name, lcfg->lcfg_inlbuf2,
 113                strlen(lcfg->lcfg_inlbuf2));
 114
 115 #if 0
 116         /* don't bother checking attached/setup; obd_connect() should, and it
 117          * can change underneath us */
 118         rc = connect_to_obd(cobd->master_name, &master_conn);
 119         if (rc != 0)
 120                 GOTO(exit, rc);
 121         cobd->master_exp = class_conn2export(&master_conn);
 122 #endif
 123         rc = connect_to_obd(cobd->cache_name, &cache_conn);
 124         if (rc != 0) {
 125                 obd_disconnect(cobd->cache_exp, 0);
 126                 GOTO(exit, rc);
 127         }
 128         cobd->cache_exp = class_conn2export(&cache_conn);
 129         cobd->cache_on = 1;
 130
 131         if (!strcmp(master->obd_type->typ_name, LUSTRE_MDC_NAME)) {
 132                 int mds_type;
 133
 134                 mds_type = MDS_MASTER_OBD;
 135                 obd_set_info(cobd->master_exp, strlen("mds_type"),
 136                              "mds_type", sizeof(mds_type), &mds_type);
 137
 138                 mds_type = MDS_CACHE_OBD;
 139                 obd_set_info(cobd->cache_exp, strlen("mds_type"),
 140                              "mds_type", sizeof(mds_type), &mds_type);
 141         }
 142 exit:
 143         if (rc) {
 144                 if (cobd->cache_name)
 145                         OBD_FREE(cobd->cache_name,
 146                                  strlen(cobd->cache_name) + 1);
 147                 if (cobd->master_name)
 148                         OBD_FREE(cobd->master_name,
 149                                  strlen(cobd->master_name) + 1);
 150         }
 151         RETURN(rc);
 152 }
 153
 154 static int cobd_cleanup(struct obd_device *obd, int flags)
 155 {
 156         struct cache_obd  *cobd = &obd->u.cobd;
 157         int                rc;
 158
 159         if (!list_empty(&obd->obd_exports))
 160                 return (-EBUSY);
 161
 162         if (cobd->cache_name)
 163                 OBD_FREE(cobd->cache_name,
 164                          strlen(cobd->cache_name) + 1);
 165         if (cobd->master_name)
 166                 OBD_FREE(cobd->master_name,
 167                          strlen(cobd->master_name) + 1);
 168         if (cobd->cache_on) {
 169                 rc = obd_disconnect(cobd->cache_exp, flags);
 170                 if (rc != 0)
 171                         CERROR("error %d disconnecting cache\n", rc);
 172         }
 173         rc = obd_disconnect(cobd->master_exp, flags);
 174         if (rc != 0)
 175                 CERROR("error %d disconnecting master\n", rc);
 176
 177         return (rc);
 178 }
 179
 180 struct obd_export *cobd_get_exp(struct obd_device *obd)
 181 {
 182         struct cache_obd  *cobd = &obd->u.cobd;
 183
 184         if (cobd->cache_on)
 185                 return cobd->cache_exp;
 186         else
 187                 return cobd->master_exp;
 188 }
 189
 190 static int
 191 cobd_connect(struct lustre_handle *conn, struct obd_device *obd,
 192              struct obd_uuid *cluuid, unsigned long connect_flags)
 193 {
 194         return class_connect(conn, obd, cluuid);
 195 }
 196
 197 static int cobd_disconnect(struct obd_export *exp, unsigned long flags)
 198 {
 199         return class_disconnect(exp, flags);
 200 }
 201
 202 static int cobd_get_info(struct obd_export *exp, obd_count keylen,
 203                          void *key, __u32 *vallen, void *val)
 204 {
 205         struct obd_device *obd = class_exp2obd(exp);
 206         struct obd_export *cobd_exp;
 207
 208         if (obd == NULL) {
 209                 CERROR("invalid client cookie "LPX64"\n",
 210                        exp->exp_handle.h_cookie);
 211                 return -EINVAL;
 212         }
 213         cobd_exp = cobd_get_exp(obd);
 214
 215         /* intercept cache utilisation info? */
 216         return obd_get_info(cobd_exp, keylen, key, vallen, val);
 217 }
 218
 219 static int cobd_set_info(struct obd_export *exp, obd_count keylen,
 220                          void *key, obd_count vallen, void *val)
 221 {
 222         struct obd_device *obd = class_exp2obd(exp);
 223         struct obd_export *cobd_exp;
 224
 225         if (obd == NULL) {
 226                 CERROR("invalid client cookie "LPX64"\n",
 227                        exp->exp_handle.h_cookie);
 228                 return -EINVAL;
 229         }
 230         cobd_exp = cobd_get_exp(obd);
 231
 232         /* intercept cache utilisation info? */
 233         return obd_set_info(cobd_exp, keylen, key, vallen, val);
 234 }
 235
 236 static int cobd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
 237                        unsigned long max_age)
 238 {
 239         struct obd_export *cobd_exp;
 240
 241         cobd_exp = cobd_get_exp(obd);
 242
 243         return obd_statfs(class_exp2obd(cobd_exp), osfs, max_age);
 244 }
 245
 246 static int cobd_packmd(struct obd_export *exp,
 247                        struct lov_mds_md **disk_tgt,
 248                        struct lov_stripe_md *mem_src)
 249 {
 250         struct obd_device *obd = class_exp2obd(exp);
 251         struct obd_export *cobd_exp;
 252
 253         if (obd == NULL) {
 254                 CERROR("invalid client cookie "LPX64"\n",
 255                        exp->exp_handle.h_cookie);
 256                 return -EINVAL;
 257         }
 258         cobd_exp = cobd_get_exp(obd);
 259         return obd_packmd(cobd_exp, disk_tgt, mem_src);
 260 }
 261
 262 static int cobd_unpackmd(struct obd_export *exp,
 263                          struct lov_stripe_md **mem_tgt,
 264                          struct lov_mds_md *disk_src,
 265                          int disk_len)
 266 {
 267         struct obd_device *obd = class_exp2obd(exp);
 268         struct obd_export *cobd_exp;
 269
 270         if (obd == NULL) {
 271                 CERROR("invalid client cookie "LPX64"\n",
 272                        exp->exp_handle.h_cookie);
 273                 return -EINVAL;
 274         }
 275         cobd_exp = cobd_get_exp(obd);
 276         return obd_unpackmd(cobd_exp, mem_tgt, disk_src, disk_len);
 277 }
 278
 279 static int cobd_create(struct obd_export *exp, struct obdo *obdo,
 280                        struct lov_stripe_md **ea,
 281                        struct obd_trans_info *oti)
 282 {
 283         struct obd_device *obd = class_exp2obd(exp);
 284         struct obd_export *cobd_exp;
 285
 286         if (obd == NULL) {
 287                 CERROR("invalid client cookie "LPX64"\n",
 288                        exp->exp_handle.h_cookie);
 289                 return -EINVAL;
 290         }
 291         cobd_exp = cobd_get_exp(obd);
 292         return obd_create(cobd_exp, obdo, ea, oti);
 293 }
 294
 295 static int cobd_destroy(struct obd_export *exp, struct obdo *obdo,
 296                         struct lov_stripe_md *ea,
 297                         struct obd_trans_info *oti)
 298 {
 299         struct obd_device *obd = class_exp2obd(exp);
 300         struct obd_export *cobd_exp;
 301
 302         if (obd == NULL) {
 303                 CERROR("invalid client cookie "LPX64"\n",
 304                        exp->exp_handle.h_cookie);
 305                 return -EINVAL;
 306         }
 307         cobd_exp = cobd_get_exp(obd);
 308         return obd_destroy(cobd_exp, obdo, ea, oti);
 309 }
 310
 311 static int cobd_precleanup(struct obd_device *obd, int flags)
 312 {
 313         /* FIXME-WANGDI: do we need some cleanup here? */
 314         return 0;
 315 }
 316
 317 static int cobd_getattr(struct obd_export *exp, struct obdo *oa,
 318                         struct lov_stripe_md *lsm)
 319 {
 320         struct obd_device *obd = class_exp2obd(exp);
 321         struct obd_export *cobd_exp;
 322
 323         if (obd == NULL) {
 324                 CERROR("invalid client cookie "LPX64"\n",
 325                        exp->exp_handle.h_cookie);
 326                 return -EINVAL;
 327         }
 328         cobd_exp = cobd_get_exp(obd);
 329         return obd_getattr(cobd_exp, oa, lsm);
 330 }
 331
 332 static int cobd_getattr_async(struct obd_export *exp,
 333                               struct obdo *obdo, struct lov_stripe_md *ea,
 334                               struct ptlrpc_request_set *set)
 335 {
 336         struct obd_device *obd = class_exp2obd(exp);
 337         struct obd_export *cobd_exp;
 338
 339         if (obd == NULL) {
 340                 CERROR("invalid client cookie "LPX64"\n",
 341                        exp->exp_handle.h_cookie);
 342                 return -EINVAL;
 343         }
 344         cobd_exp = cobd_get_exp(obd);
 345         return obd_getattr_async(cobd_exp, obdo, ea, set);
 346 }
 347
 348 static int cobd_setattr(struct obd_export *exp, struct obdo *obdo,
 349                         struct lov_stripe_md *ea,
 350                         struct obd_trans_info *oti)
 351 {
 352         struct obd_device *obd = class_exp2obd(exp);
 353         struct obd_export *cobd_exp;
 354
 355         if (obd == NULL) {
 356                 CERROR("invalid client cookie "LPX64"\n",
 357                        exp->exp_handle.h_cookie);
 358                 return -EINVAL;
 359         }
 360         cobd_exp = cobd_get_exp(obd);
 361         return obd_setattr(cobd_exp, obdo, ea, oti);
 362 }
 363
 364 static int cobd_md_getstatus(struct obd_export *exp,
 365                              struct lustre_id *rootid)
 366 {
 367         struct obd_device *obd = class_exp2obd(exp);
 368         struct obd_export *cobd_exp;
 369
 370         if (obd == NULL) {
 371                 CERROR("invalid client cookie "LPX64"\n",
 372                        exp->exp_handle.h_cookie);
 373                 return -EINVAL;
 374         }
 375         cobd_exp = cobd_get_exp(obd);
 376         return md_getstatus(cobd_exp, rootid);
 377 }
 378
 379 static int cobd_brw(int cmd, struct obd_export *exp, struct obdo *oa,
 380                     struct lov_stripe_md *ea, obd_count oa_bufs,
 381                     struct brw_page *pg, struct obd_trans_info *oti)
 382 {
 383         struct obd_device *obd = class_exp2obd(exp);
 384         struct obd_export *cobd_exp;
 385
 386         if (obd == NULL) {
 387                 CERROR("invalid client cookie "LPX64"\n",
 388                        exp->exp_handle.h_cookie);
 389                 return -EINVAL;
 390         }
 391         cobd_exp = cobd_get_exp(obd);
 392         return obd_brw(cmd, cobd_exp, oa, ea, oa_bufs, pg, oti);
 393 }
 394
 395 static int cobd_brw_async(int cmd, struct obd_export *exp,
 396                           struct obdo *oa, struct lov_stripe_md *ea,
 397                           obd_count oa_bufs, struct brw_page *pg,
 398                           struct ptlrpc_request_set *set,
 399                           struct obd_trans_info *oti)
 400 {
 401         struct obd_device *obd = class_exp2obd(exp);
 402         struct obd_export *cobd_exp;
 403
 404         if (obd == NULL) {
 405                 CERROR("invalid client cookie "LPX64"\n",
 406                        exp->exp_handle.h_cookie);
 407                 return -EINVAL;
 408         }
 409         cobd_exp = cobd_get_exp(obd);
 410         return obd_brw_async(cmd, cobd_exp, oa, ea, oa_bufs,
 411                              pg, set, oti);
 412 }
 413
 414 static int cobd_prep_async_page(struct obd_export *exp,
 415                                 struct lov_stripe_md *lsm,
 416                                 struct lov_oinfo *loi,
 417                                 struct page *page, obd_off offset,
 418                                 struct obd_async_page_ops *ops,
 419                                 void *data, void **res)
 420 {
 421         struct obd_device *obd = class_exp2obd(exp);
 422         struct obd_export *cobd_exp;
 423
 424         if (obd == NULL) {
 425                 CERROR("invalid client cookie "LPX64"\n",
 426                        exp->exp_handle.h_cookie);
 427                 return -EINVAL;
 428         }
 429         cobd_exp = cobd_get_exp(obd);
 430         return obd_prep_async_page(cobd_exp, lsm, loi, page, offset,
 431                                    ops, data, res);
 432 }
 433
 434 static int cobd_queue_async_io(struct obd_export *exp,
 435                                struct lov_stripe_md *lsm,
 436                                struct lov_oinfo *loi, void *cookie,
 437                                int cmd, obd_off off, int count,
 438                                obd_flags brw_flags, obd_flags async_flags)
 439 {
 440         struct obd_device *obd = class_exp2obd(exp);
 441         struct obd_export *cobd_exp;
 442
 443         if (obd == NULL) {
 444                 CERROR("invalid client cookie "LPX64"\n",
 445                        exp->exp_handle.h_cookie);
 446                 return -EINVAL;
 447         }
 448         cobd_exp = cobd_get_exp(obd);
 449         return obd_queue_async_io(cobd_exp, lsm, loi, cookie, cmd, off, count,
 450                                   brw_flags, async_flags);
 451 }
 452
 453 static int cobd_set_async_flags(struct obd_export *exp,
 454                                struct lov_stripe_md *lsm,
 455                                struct lov_oinfo *loi, void *cookie,
 456                                obd_flags async_flags)
 457 {
 458         struct obd_device *obd = class_exp2obd(exp);
 459         struct obd_export *cobd_exp;
 460
 461         if (obd == NULL) {
 462                 CERROR("invalid client cookie "LPX64"\n",
 463                        exp->exp_handle.h_cookie);
 464                 return -EINVAL;
 465         }
 466         cobd_exp = cobd_get_exp(obd);
 467         return obd_set_async_flags(cobd_exp, lsm, loi, cookie, async_flags);
 468 }
 469
 470 static int cobd_queue_group_io(struct obd_export *exp,
 471                                struct lov_stripe_md *lsm,
 472                                struct lov_oinfo *loi,
 473                                struct obd_io_group *oig,
 474                                void *cookie, int cmd, obd_off off,
 475                                int count, obd_flags brw_flags,
 476                                obd_flags async_flags)
 477 {
 478         struct obd_device *obd = class_exp2obd(exp);
 479         struct obd_export *cobd_exp;
 480
 481         if (obd == NULL) {
 482                 CERROR("invalid client cookie "LPX64"\n",
 483                        exp->exp_handle.h_cookie);
 484                 return -EINVAL;
 485         }
 486         cobd_exp = cobd_get_exp(obd);
 487         return obd_queue_group_io(cobd_exp, lsm, loi, oig, cookie,
 488                                   cmd, off, count, brw_flags, async_flags);
 489 }
 490
 491 static int cobd_trigger_group_io(struct obd_export *exp,
 492                                  struct lov_stripe_md *lsm,
 493                                  struct lov_oinfo *loi,
 494                                  struct obd_io_group *oig)
 495 {
 496         struct obd_device *obd = class_exp2obd(exp);
 497         struct obd_export *cobd_exp;
 498
 499         if (obd == NULL) {
 500                 CERROR("invalid client cookie "LPX64"\n",
 501                        exp->exp_handle.h_cookie);
 502                 return -EINVAL;
 503         }
 504         cobd_exp = cobd_get_exp(obd);
 505         return obd_trigger_group_io(cobd_exp, lsm, loi, oig);
 506 }
 507
 508 static int cobd_teardown_async_page(struct obd_export *exp,
 509                                     struct lov_stripe_md *lsm,
 510                                     struct lov_oinfo *loi, void *cookie)
 511 {
 512         struct obd_device *obd = class_exp2obd(exp);
 513         struct obd_export *cobd_exp;
 514
 515         if (obd == NULL) {
 516                 CERROR("invalid client cookie "LPX64"\n",
 517                        exp->exp_handle.h_cookie);
 518                 return -EINVAL;
 519         }
 520         cobd_exp = cobd_get_exp(obd);
 521         return obd_teardown_async_page(cobd_exp, lsm, loi, cookie);
 522 }
 523
 524 static int cobd_punch(struct obd_export *exp, struct obdo *oa,
 525                       struct lov_stripe_md *ea, obd_size start,
 526                       obd_size end, struct obd_trans_info *oti)
 527 {
 528         struct obd_device *obd = class_exp2obd(exp);
 529         struct obd_export *cobd_exp;
 530
 531         if (obd == NULL) {
 532                 CERROR("invalid client cookie "LPX64"\n",
 533                        exp->exp_handle.h_cookie);
 534                 return -EINVAL;
 535         }
 536         cobd_exp = cobd_get_exp(obd);
 537         return obd_punch(cobd_exp, oa, ea, start, end, oti);
 538 }
 539
 540 static int cobd_sync(struct obd_export *exp, struct obdo *oa,
 541                      struct lov_stripe_md *ea, obd_size start,
 542                      obd_size end)
 543 {
 544         struct obd_device *obd = class_exp2obd(exp);
 545         struct obd_export *cobd_exp;
 546
 547         if (obd == NULL) {
 548                 CERROR("invalid client cookie "LPX64"\n",
 549                        exp->exp_handle.h_cookie);
 550                 return -EINVAL;
 551         }
 552         cobd_exp = cobd_get_exp(obd);
 553         return obd_sync(cobd_exp, oa, ea, start, end);
 554 }
 555
 556 static int cobd_enqueue(struct obd_export *exp, struct lov_stripe_md *ea,
 557                         __u32 type, ldlm_policy_data_t *policy,
 558                         __u32 mode, int *flags, void *bl_cb, void *cp_cb,
 559                         void *gl_cb, void *data, __u32 lvb_len,
 560                         void *lvb_swabber, struct lustre_handle *lockh)
 561 {
 562         struct obd_device *obd = class_exp2obd(exp);
 563         struct obd_export *cobd_exp;
 564
 565         if (obd == NULL) {
 566                 CERROR("invalid client cookie "LPX64"\n",
 567                        exp->exp_handle.h_cookie);
 568                 return -EINVAL;
 569         }
 570         cobd_exp = cobd_get_exp(obd);
 571         return obd_enqueue(cobd_exp, ea, type, policy, mode, flags,
 572                            bl_cb, cp_cb, gl_cb, data, lvb_len,
 573                            lvb_swabber, lockh);
 574 }
 575
 576 static int cobd_match(struct obd_export *exp, struct lov_stripe_md *ea,
 577                       __u32 type, ldlm_policy_data_t *policy, __u32 mode,
 578                       int *flags, void *data, struct lustre_handle *lockh)
 579 {
 580         struct obd_device *obd = class_exp2obd(exp);
 581         struct obd_export *cobd_exp;
 582
 583         if (obd == NULL) {
 584                 CERROR("invalid client cookie "LPX64"\n",
 585                        exp->exp_handle.h_cookie);
 586                 return -EINVAL;
 587         }
 588         cobd_exp = cobd_get_exp(obd);
 589         return obd_match(cobd_exp, ea, type, policy, mode, flags, data,
 590                          lockh);
 591 }
 592 static int cobd_change_cbdata(struct obd_export *exp,
 593                               struct lov_stripe_md *lsm,
 594                               ldlm_iterator_t it, void *data)
 595 {
 596         struct obd_device *obd = class_exp2obd(exp);
 597         struct obd_export *cobd_exp;
 598
 599         if (obd == NULL) {
 600                 CERROR("invalid client cookie "LPX64"\n",
 601                        exp->exp_handle.h_cookie);
 602                 return -EINVAL;
 603         }
 604         cobd_exp = cobd_get_exp(obd);
 605         return obd_change_cbdata(cobd_exp, lsm, it, data);
 606 }
 607
 608 static int cobd_cancel(struct obd_export *exp,
 609                        struct lov_stripe_md *ea, __u32 mode,
 610                        struct lustre_handle *lockh)
 611 {
 612         struct obd_device *obd = class_exp2obd(exp);
 613         struct obd_export *cobd_exp;
 614
 615         if (obd == NULL) {
 616                 CERROR("invalid client cookie "LPX64"\n",
 617                        exp->exp_handle.h_cookie);
 618                 return -EINVAL;
 619         }
 620         cobd_exp = cobd_get_exp(obd);
 621         return obd_cancel(cobd_exp, ea, mode, lockh);
 622 }
 623
 624 static int cobd_cancel_unused(struct obd_export *exp,
 625                               struct lov_stripe_md *ea, int flags,
 626                               void *opaque)
 627 {
 628         struct obd_device *obd = class_exp2obd(exp);
 629         struct obd_export *cobd_exp;
 630
 631         if (obd == NULL) {
 632                 CERROR("invalid client cookie "LPX64"\n",
 633                        exp->exp_handle.h_cookie);
 634                 return -EINVAL;
 635         }
 636         cobd_exp = cobd_get_exp(obd);
 637         return obd_cancel_unused(cobd_exp, ea, flags, opaque);
 638 }
 639
 640 static int cobd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
 641                        int objcount, struct obd_ioobj *obj,
 642                        int niocount, struct niobuf_remote *nb,
 643                        struct niobuf_local *res, struct obd_trans_info *oti)
 644 {
 645         struct obd_device *obd = class_exp2obd(exp);
 646         struct obd_export *cobd_exp;
 647
 648         if (obd == NULL) {
 649                 CERROR("invalid client cookie "LPX64"\n",
 650                        exp->exp_handle.h_cookie);
 651                 return -EINVAL;
 652         }
 653         cobd_exp = cobd_get_exp(obd);
 654         return obd_preprw(cmd, cobd_exp, oa, objcount, obj, niocount, nb,
 655                           res, oti);
 656 }
 657
 658 static int cobd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
 659                          int objcount, struct obd_ioobj *obj,
 660                          int niocount, struct niobuf_local *local,
 661                          struct obd_trans_info *oti, int rc)
 662 {
 663         struct obd_device *obd = class_exp2obd(exp);
 664         struct obd_export *cobd_exp;
 665
 666         if (obd == NULL) {
 667                 CERROR("invalid client cookie "LPX64"\n",
 668                        exp->exp_handle.h_cookie);
 669                 return -EINVAL;
 670         }
 671         cobd_exp = cobd_get_exp(obd);
 672         return obd_commitrw(cmd, cobd_exp, oa, objcount, obj, niocount,
 673                             local, oti, rc);
 674 }
 675
 676 static int cobd_flush(struct obd_device *obd)
 677 {
 678         /* flush the filesystem from the cache to the real device. */
 679         return 0;
 680 }
 681
 682 static int cobd_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
 683                           void *karg, void *uarg)
 684 {
 685         struct obd_device *obd = class_exp2obd(exp);
 686         struct cache_obd  *cobd = &obd->u.cobd;
 687         struct obd_device *master_dev = NULL;
 688         struct obd_export *cobd_exp;
 689         int rc = 0;
 690
 691         switch (cmd) {
 692         case OBD_IOC_COBD_CON:
 693                 if (!cobd->cache_on) {
 694                         struct lustre_handle cache_conn = {0,};
 695
 696                         rc = obd_disconnect(cobd->master_exp, 0);
 697                         if (rc != 0)
 698                                 CERROR("error %d disconnecting master\n", rc);
 699                         rc = connect_to_obd(cobd->cache_name, &cache_conn);
 700                         if (rc != 0)
 701                                 RETURN(rc);
 702                         cobd->cache_exp = class_conn2export(&cache_conn);
 703
 704                         cobd->cache_on = 1;
 705                 }
 706                 break;
 707         case OBD_IOC_COBD_COFF:
 708                 if (cobd->cache_on) {
 709                         struct lustre_handle master_conn = {0,};
 710                         struct obd_device *cache_dev = NULL;
 711                         int m_easize, m_cooksize;
 712
 713                         cache_dev = class_exp2obd(cobd->cache_exp);
 714                         m_easize = cache_dev->u.cli.cl_max_mds_easize;
 715                         m_cooksize = cache_dev->u.cli.cl_max_mds_cookiesize;
 716                         rc = obd_disconnect(cobd->cache_exp, 0);
 717                         if (rc != 0)
 718                                 CERROR("error %d disconnecting master\n", rc);
 719
 720                         /* FIXME-WANGDI: should we read from master_dev? */
 721
 722                         rc = connect_to_obd(cobd->master_name, &master_conn);
 723                         if (rc != 0)
 724                                 RETURN(rc);
 725                         cobd->master_exp = class_conn2export(&master_conn);
 726                         master_dev = class_exp2obd(cobd->master_exp);
 727                         master_dev->u.cli.cl_max_mds_easize = m_easize;
 728                         master_dev->u.cli.cl_max_mds_cookiesize = m_cooksize;
 729                         cobd->cache_on = 0;
 730                 }
 731                 break;
 732         case OBD_IOC_COBD_CFLUSH:
 733                 if (cobd->cache_on) {
 734                         cobd->cache_on = 0;
 735                         cobd_flush(obd);
 736                 }
 737                 break;
 738         default:
 739                 cobd_exp = cobd_get_exp(obd);
 740                 rc = obd_iocontrol(cmd, cobd_exp, len, karg, uarg);
 741         }
 742
 743         return rc;
 744 }
 745
 746 static int cobd_llog_init(struct obd_device *obd, struct obd_llogs *llogs,
 747                           struct obd_device *disk_obd, int count,
 748                           struct llog_catid *logid)
 749 {
 750         struct obd_export *cobd_exp;
 751         struct obd_device *cobd_obd;
 752
 753         cobd_exp = cobd_get_exp(obd);
 754         cobd_obd = class_exp2obd(cobd_exp);
 755
 756         return obd_llog_init(cobd_obd, &cobd_obd->obd_llogs,
 757                              disk_obd, count, logid);
 758 }
 759
 760 static int cobd_llog_finish(struct obd_device *obd, struct obd_llogs *llogs,
 761                             int count)
 762 {
 763         struct obd_export *cobd_exp;
 764         struct obd_device *cobd_obd;
 765
 766         cobd_exp = cobd_get_exp(obd);
 767         cobd_obd = class_exp2obd(cobd_exp);
 768
 769         return obd_llog_finish(cobd_obd, &cobd_obd->obd_llogs, count);
 770 }
 771
 772 static int cobd_notify(struct obd_device *obd, struct obd_device *watched,
 773                        int active, void *data)
 774 {
 775         struct obd_export *cobd_exp;
 776
 777         cobd_exp = cobd_get_exp(obd);
 778
 779         return obd_notify(class_exp2obd(cobd_exp), watched, active, data);
 780 }
 781
 782 static int cobd_pin(struct obd_export *exp, obd_id ino, __u32 gen,
 783                     int type, struct obd_client_handle *handle, int flag)
 784 {
 785         struct obd_device *obd = class_exp2obd(exp);
 786         struct obd_export *cobd_exp;
 787
 788         if (obd == NULL) {
 789                 CERROR("invalid client cookie "LPX64"\n",
 790                        exp->exp_handle.h_cookie);
 791                 return -EINVAL;
 792         }
 793         cobd_exp = cobd_get_exp(obd);
 794
 795         return obd_pin(cobd_exp, ino, gen, type, handle, flag);
 796 }
 797
 798 static int cobd_unpin(struct obd_export *exp,
 799                       struct obd_client_handle *handle, int flag)
 800 {
 801         struct obd_device *obd = class_exp2obd(exp);
 802         struct obd_export *cobd_exp;
 803
 804         if (obd == NULL) {
 805                 CERROR("invalid client cookie "LPX64"\n",
 806                        exp->exp_handle.h_cookie);
 807                 return -EINVAL;
 808         }
 809         cobd_exp = cobd_get_exp(obd);
 810
 811         return obd_unpin(cobd_exp, handle, flag);
 812 }
 813
 814 static int cobd_init_ea_size(struct obd_export *exp, int easize, int cookiesize)
 815 {
 816         struct obd_export *cobd_exp;
 817
 818         cobd_exp = cobd_get_exp(exp->exp_obd);
 819         return obd_init_ea_size(cobd_exp, easize, cookiesize);
 820 }
 821
 822 static int  cobd_import_event(struct obd_device *obd,
 823                               struct obd_import *imp,
 824                               enum obd_import_event event)
 825 {
 826         struct obd_export *cobd_exp;
 827
 828         cobd_exp = cobd_get_exp(obd);
 829
 830         obd_import_event(class_exp2obd(cobd_exp), imp, event);
 831
 832         return 0;
 833 }
 834
 835 static int cobd_md_getattr(struct obd_export *exp, struct lustre_id *id,
 836                            __u64 valid, unsigned int ea_size,
 837                            struct ptlrpc_request **request)
 838 {
 839         struct obd_device *obd = class_exp2obd(exp);
 840         struct obd_export *cobd_exp;
 841
 842         if (obd == NULL) {
 843                 CERROR("invalid client cookie "LPX64"\n",
 844                        exp->exp_handle.h_cookie);
 845                 return -EINVAL;
 846         }
 847         cobd_exp = cobd_get_exp(obd);
 848         return md_getattr(cobd_exp, id, valid, ea_size, request);
 849 }
 850
 851 static int cobd_md_req2lustre_md (struct obd_export *mdc_exp,
 852                                   struct ptlrpc_request *req, unsigned int offset,
 853                                   struct obd_export *osc_exp, struct lustre_md *md)
 854 {
 855         struct obd_device *obd = class_exp2obd(mdc_exp);
 856         struct obd_export *cobd_exp;
 857
 858         if (obd == NULL) {
 859                 CERROR("invalid client cookie "LPX64"\n",
 860                        mdc_exp->exp_handle.h_cookie);
 861                 return -EINVAL;
 862         }
 863         cobd_exp = cobd_get_exp(obd);
 864         return md_req2lustre_md(cobd_exp, req, offset, osc_exp, md);
 865 }
 866
 867 static int cobd_md_change_cbdata(struct obd_export *exp, struct lustre_id *id,
 868                                  ldlm_iterator_t it, void *data)
 869 {
 870         struct obd_device *obd = class_exp2obd(exp);
 871         struct obd_export *cobd_exp;
 872
 873         if (obd == NULL) {
 874                 CERROR("invalid client cookie "LPX64"\n",
 875                        exp->exp_handle.h_cookie);
 876                 return -EINVAL;
 877         }
 878         cobd_exp = cobd_get_exp(obd);
 879         return md_change_cbdata(cobd_exp, id, it, data);
 880 }
 881
 882 static int cobd_md_getattr_lock(struct obd_export *exp, struct lustre_id *id,
 883                                 char *filename, int namelen, __u64 valid,
 884                                 unsigned int ea_size, struct ptlrpc_request **request)
 885 {
 886         struct obd_device *obd = class_exp2obd(exp);
 887         struct obd_export *cobd_exp;
 888
 889         if (obd == NULL) {
 890                 CERROR("invalid client cookie "LPX64"\n",
 891                        exp->exp_handle.h_cookie);
 892                 return -EINVAL;
 893         }
 894         cobd_exp = cobd_get_exp(obd);
 895         return md_getattr_lock(cobd_exp, id, filename, namelen, valid,
 896                                ea_size, request);
 897 }
 898
 899 static int cobd_md_create(struct obd_export *exp, struct mdc_op_data *op_data,
 900                           const void *data, int datalen, int mode,
 901                           __u32 uid, __u32 gid, __u64 rdev,
 902                           struct ptlrpc_request **request)
 903 {
 904         struct obd_device *obd = class_exp2obd(exp);
 905         struct obd_export *cobd_exp;
 906
 907         if (obd == NULL) {
 908                 CERROR("invalid client cookie "LPX64"\n",
 909                        exp->exp_handle.h_cookie);
 910                 return -EINVAL;
 911         }
 912         cobd_exp = cobd_get_exp(obd);
 913         return md_create(cobd_exp, op_data, data, datalen, mode,
 914                          uid, gid, rdev, request);
 915 }
 916
 917 static int cobd_md_unlink(struct obd_export *exp, struct mdc_op_data *data,
 918                           struct ptlrpc_request **request)
 919 {
 920         struct obd_device *obd = class_exp2obd(exp);
 921         struct obd_export *cobd_exp;
 922
 923         if (obd == NULL) {
 924                 CERROR("invalid client cookie "LPX64"\n",
 925                        exp->exp_handle.h_cookie);
 926                 return -EINVAL;
 927         }
 928         cobd_exp = cobd_get_exp(obd);
 929         return md_unlink(cobd_exp, data, request);
 930 }
 931
 932 static int cobd_md_valid_attrs(struct obd_export *exp,
 933                                struct lustre_id *id)
 934 {
 935         struct obd_device *obd = class_exp2obd(exp);
 936         struct obd_export *cobd_exp;
 937
 938         if (obd == NULL) {
 939                 CERROR("invalid client cookie "LPX64"\n",
 940                        exp->exp_handle.h_cookie);
 941                 return -EINVAL;
 942         }
 943         cobd_exp = cobd_get_exp(obd);
 944         return md_valid_attrs(cobd_exp, id);
 945 }
 946
 947 static int cobd_md_rename(struct obd_export *exp, struct mdc_op_data *data,
 948                           const char *old, int oldlen, const char *new,
 949                           int newlen, struct ptlrpc_request **request)
 950 {
 951         struct obd_device *obd = class_exp2obd(exp);
 952         struct obd_export *cobd_exp;
 953
 954         if (obd == NULL) {
 955                 CERROR("invalid client cookie "LPX64"\n",
 956                        exp->exp_handle.h_cookie);
 957                 return -EINVAL;
 958         }
 959         cobd_exp = cobd_get_exp(obd);
 960         return md_rename(cobd_exp, data, old, oldlen, new, newlen, request);
 961 }
 962
 963 static int cobd_md_link(struct obd_export *exp, struct mdc_op_data *data,
 964                         struct ptlrpc_request **request)
 965 {
 966         struct obd_device *obd = class_exp2obd(exp);
 967         struct obd_export *cobd_exp;
 968
 969         if (obd == NULL) {
 970                 CERROR("invalid client cookie "LPX64"\n",
 971                        exp->exp_handle.h_cookie);
 972                 return -EINVAL;
 973         }
 974         cobd_exp = cobd_get_exp(obd);
 975         return md_link(cobd_exp, data, request);
 976 }
 977
 978 static int cobd_md_setattr(struct obd_export *exp, struct mdc_op_data *data,
 979                            struct iattr *iattr, void *ea, int ealen, void *ea2,
 980                            int ea2len, struct ptlrpc_request **request)
 981 {
 982         struct obd_device *obd = class_exp2obd(exp);
 983         struct obd_export *cobd_exp;
 984
 985         if (obd == NULL) {
 986                 CERROR("invalid client cookie "LPX64"\n",
 987                        exp->exp_handle.h_cookie);
 988                 return -EINVAL;
 989         }
 990         cobd_exp = cobd_get_exp(obd);
 991         return md_setattr(cobd_exp, data, iattr, ea, ealen, ea2, ea2len, request);
 992 }
 993
 994 static int cobd_md_readpage(struct obd_export *exp,
 995                             struct lustre_id *mdc_id,
 996                             __u64 offset, struct page *page,
 997                             struct ptlrpc_request **request)
 998 {
 999         struct obd_device *obd = class_exp2obd(exp);
1000         struct obd_export *cobd_exp;
1001
1002         if (obd == NULL) {
1003                 CERROR("invalid client cookie "LPX64"\n",
1004                        exp->exp_handle.h_cookie);
1005                 return -EINVAL;
1006         }
1007         cobd_exp = cobd_get_exp(obd);
1008         return md_readpage(cobd_exp, mdc_id, offset, page, request);
1009 }
1010
1011 static int cobd_md_close(struct obd_export *exp, struct obdo *obdo,
1012                          struct obd_client_handle *och,
1013                          struct ptlrpc_request **request)
1014 {
1015         struct obd_device *obd = class_exp2obd(exp);
1016         struct obd_export *cobd_exp;
1017
1018         if (obd == NULL) {
1019                 CERROR("invalid client cookie "LPX64"\n",
1020                        exp->exp_handle.h_cookie);
1021                 return -EINVAL;
1022         }
1023         cobd_exp = cobd_get_exp(obd);
1024         return md_close(cobd_exp, obdo, och, request);
1025 }
1026
1027 static int cobd_md_done_writing(struct obd_export *exp, struct obdo *obdo)
1028 {
1029         struct obd_device *obd = class_exp2obd(exp);
1030         struct obd_export *cobd_exp;
1031
1032         if (obd == NULL) {
1033                 CERROR("invalid client cookie "LPX64"\n",
1034                        exp->exp_handle.h_cookie);
1035                 return -EINVAL;
1036         }
1037         cobd_exp = cobd_get_exp(obd);
1038         return md_done_writing(cobd_exp, obdo);
1039 }
1040
1041 static int cobd_md_sync(struct obd_export *exp, struct lustre_id *id,
1042                         struct ptlrpc_request **request)
1043 {
1044         struct obd_device *obd = class_exp2obd(exp);
1045         struct obd_export *cobd_exp;
1046
1047         if (obd == NULL) {
1048                 CERROR("invalid client cookie "LPX64"\n",
1049                        exp->exp_handle.h_cookie);
1050                 return -EINVAL;
1051         }
1052         cobd_exp = cobd_get_exp(obd);
1053
1054         return md_sync(cobd_exp, id, request);
1055 }
1056
1057 static int cobd_md_set_open_replay_data(struct obd_export *exp,
1058                                         struct obd_client_handle *och,
1059                                         struct ptlrpc_request *open_req)
1060 {
1061         struct obd_device *obd = class_exp2obd(exp);
1062         struct obd_export *cobd_exp;
1063
1064         if (obd == NULL) {
1065                 CERROR("invalid client cookie "LPX64"\n",
1066                        exp->exp_handle.h_cookie);
1067                 return -EINVAL;
1068         }
1069         cobd_exp = cobd_get_exp(obd);
1070
1071         return md_set_open_replay_data(cobd_exp, och, open_req);
1072 }
1073
1074 static int cobd_md_clear_open_replay_data(struct obd_export *exp,
1075                                           struct obd_client_handle *och)
1076 {
1077         struct obd_device *obd = class_exp2obd(exp);
1078         struct obd_export *cobd_exp;
1079
1080         if (obd == NULL) {
1081                 CERROR("invalid client cookie "LPX64"\n",
1082                        exp->exp_handle.h_cookie);
1083                 return -EINVAL;
1084         }
1085         cobd_exp = cobd_get_exp(obd);
1086
1087         return md_clear_open_replay_data(cobd_exp, och);
1088 }
1089
1090 static int cobd_md_store_inode_generation(struct obd_export *exp,
1091                                           struct ptlrpc_request *req,
1092                                           int reqoff, int repoff)
1093 {
1094         struct obd_device *obd = class_exp2obd(exp);
1095         struct obd_export *cobd_exp;
1096
1097         if (obd == NULL) {
1098                 CERROR("invalid client cookie "LPX64"\n",
1099                        exp->exp_handle.h_cookie);
1100                 return -EINVAL;
1101         }
1102         cobd_exp = cobd_get_exp(obd);
1103
1104         return md_store_inode_generation(cobd_exp, req, reqoff, repoff);
1105 }
1106
1107 static int cobd_md_set_lock_data(struct obd_export *exp, __u64 *l, void *data)
1108 {
1109         struct obd_device *obd = class_exp2obd(exp);
1110         struct obd_export *cobd_exp;
1111
1112         if (obd == NULL) {
1113                 CERROR("invalid client cookie "LPX64"\n",
1114                        exp->exp_handle.h_cookie);
1115                 return -EINVAL;
1116         }
1117         cobd_exp = cobd_get_exp(obd);
1118
1119         return md_set_lock_data(cobd_exp, l, data);
1120 }
1121
1122 static int cobd_md_enqueue(struct obd_export *exp, int lock_type,
1123                            struct lookup_intent *it, int lock_mode,
1124                            struct mdc_op_data *data, struct lustre_handle *lockh,
1125                            void *lmm, int lmmsize,
1126                            ldlm_completion_callback cb_completion,
1127                            ldlm_blocking_callback cb_blocking, void *cb_data)
1128 {
1129         struct obd_device *obd = class_exp2obd(exp);
1130         struct obd_export *cobd_exp;
1131
1132         if (obd == NULL) {
1133                 CERROR("invalid client cookie "LPX64"\n",
1134                        exp->exp_handle.h_cookie);
1135                 return -EINVAL;
1136         }
1137         cobd_exp = cobd_get_exp(obd);
1138         return md_enqueue(cobd_exp, lock_type, it, lock_mode, data,
1139                           lockh, lmm, lmmsize, cb_completion, cb_blocking,
1140                           cb_data);
1141 }
1142
1143 static int cobd_md_intent_lock(struct obd_export *exp, struct lustre_id *pid,
1144                                const char *name, int len, void *lmm, int lmmsize,
1145                                struct lustre_id *cid, struct lookup_intent *it,
1146                                int lookup_flags, struct ptlrpc_request **reqp,
1147                                ldlm_blocking_callback cb_blocking)
1148 {
1149         struct obd_device *obd = class_exp2obd(exp);
1150         struct obd_export *cobd_exp;
1151
1152         if (obd == NULL) {
1153                 CERROR("invalid client cookie "LPX64"\n",
1154                        exp->exp_handle.h_cookie);
1155                 return -EINVAL;
1156         }
1157         cobd_exp = cobd_get_exp(obd);
1158         return md_intent_lock(cobd_exp, pid, name, len, lmm, lmmsize,
1159                               cid, it, lookup_flags, reqp, cb_blocking);
1160 }
1161
1162 static struct obd_device *cobd_md_get_real_obd(struct obd_export *exp,
1163                                                char *name, int len)
1164 {
1165         struct obd_device *obd = class_exp2obd(exp);
1166         struct obd_export *cobd_exp;
1167
1168         if (obd == NULL) {
1169                 CERROR("invalid client cookie "LPX64"\n",
1170                        exp->exp_handle.h_cookie);
1171                 return NULL;
1172         }
1173         cobd_exp = cobd_get_exp(obd);
1174         return md_get_real_obd(cobd_exp, name, len);
1175 }
1176
1177 static int cobd_md_change_cbdata_name(struct obd_export *exp,
1178                                       struct lustre_id *id, char *name,
1179                                       int namelen, struct lustre_id *id2,
1180                                       ldlm_iterator_t it, void *data)
1181 {
1182         struct obd_device *obd = class_exp2obd(exp);
1183         struct obd_export *cobd_exp;
1184
1185         if (obd == NULL) {
1186                 CERROR("invalid client cookie "LPX64"\n",
1187                        exp->exp_handle.h_cookie);
1188                 return -EINVAL;
1189         }
1190         cobd_exp = cobd_get_exp(obd);
1191         return md_change_cbdata_name(cobd_exp, id, name, namelen,
1192                                      id2, it, data);
1193 }
1194 static struct obd_ops cobd_obd_ops = {
1195         .o_owner                = THIS_MODULE,
1196         .o_attach               = cobd_attach,
1197         .o_detach               = cobd_detach,
1198         .o_setup                = cobd_setup,
1199         .o_cleanup              = cobd_cleanup,
1200         .o_connect              = cobd_connect,
1201         .o_disconnect           = cobd_disconnect,
1202         .o_set_info             = cobd_set_info,
1203         .o_get_info             = cobd_get_info,
1204         .o_statfs               = cobd_statfs,
1205
1206         .o_packmd               = cobd_packmd,
1207         .o_unpackmd             = cobd_unpackmd,
1208         .o_create               = cobd_create,
1209         .o_destroy              = cobd_destroy,
1210         .o_precleanup           = cobd_precleanup,
1211         .o_getattr              = cobd_getattr,
1212         .o_getattr_async        = cobd_getattr_async,
1213         .o_setattr              = cobd_setattr,
1214
1215         .o_brw                  = cobd_brw,
1216         .o_brw_async            = cobd_brw_async,
1217         .o_prep_async_page      = cobd_prep_async_page,
1218         .o_queue_async_io       = cobd_queue_async_io,
1219         .o_set_async_flags      = cobd_set_async_flags,
1220         .o_queue_group_io       = cobd_queue_group_io,
1221         .o_trigger_group_io     = cobd_trigger_group_io,
1222         .o_teardown_async_page  = cobd_teardown_async_page,
1223         .o_preprw               = cobd_preprw,
1224         .o_punch                = cobd_punch,
1225         .o_sync                 = cobd_sync,
1226         .o_enqueue              = cobd_enqueue,
1227         .o_match                = cobd_match,
1228         .o_change_cbdata        = cobd_change_cbdata,
1229         .o_cancel               = cobd_cancel,
1230         .o_cancel_unused        = cobd_cancel_unused,
1231         .o_iocontrol            = cobd_iocontrol,
1232         .o_commitrw             = cobd_commitrw,
1233         .o_llog_init            = cobd_llog_init,
1234         .o_llog_finish          = cobd_llog_finish,
1235         .o_notify               = cobd_notify,
1236         .o_pin                  = cobd_pin,
1237         .o_unpin                = cobd_unpin,
1238         .o_import_event         = cobd_import_event,
1239         .o_init_ea_size         = cobd_init_ea_size,
1240 };
1241
1242 struct md_ops cobd_md_ops = {
1243         .m_getstatus            = cobd_md_getstatus,
1244         .m_getattr              = cobd_md_getattr,
1245         .m_req2lustre_md        = cobd_md_req2lustre_md,
1246         .m_change_cbdata        = cobd_md_change_cbdata,
1247         .m_getattr_lock         = cobd_md_getattr_lock,
1248         .m_create               = cobd_md_create,
1249         .m_unlink               = cobd_md_unlink,
1250         .m_valid_attrs          = cobd_md_valid_attrs,
1251         .m_rename               = cobd_md_rename,
1252         .m_link                 = cobd_md_link,
1253         .m_setattr              = cobd_md_setattr,
1254         .m_readpage             = cobd_md_readpage,
1255         .m_close                = cobd_md_close,
1256         .m_done_writing         = cobd_md_done_writing,
1257         .m_sync                 = cobd_md_sync,
1258         .m_set_open_replay_data = cobd_md_set_open_replay_data,
1259         .m_clear_open_replay_data = cobd_md_clear_open_replay_data,
1260         .m_store_inode_generation = cobd_md_store_inode_generation,
1261         .m_set_lock_data        = cobd_md_set_lock_data,
1262         .m_enqueue              = cobd_md_enqueue,
1263         .m_get_real_obd         = cobd_md_get_real_obd,
1264         .m_intent_lock          = cobd_md_intent_lock,
1265         .m_change_cbdata_name   = cobd_md_change_cbdata_name,
1266 };
1267
1268 static int __init cobd_init(void)
1269 {
1270         struct lprocfs_static_vars lvars;
1271         ENTRY;
1272
1273         printk(KERN_INFO "Lustre: Caching OBD driver; info@clusterfs.com\n");
1274
1275         lprocfs_init_vars(cobd, &lvars);
1276         RETURN(class_register_type(&cobd_obd_ops, &cobd_md_ops,
1277                                    lvars.module_vars, OBD_CACHE_DEVICENAME));
1278 }
1279
1280 static void /*__exit*/ cobd_exit(void)
1281 {
1282         class_unregister_type(OBD_CACHE_DEVICENAME);
1283 }
1284
1285 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
1286 MODULE_DESCRIPTION("Lustre Caching OBD driver");
1287 MODULE_LICENSE("GPL");
1288
1289 module_init(cobd_init);
1290 module_exit(cobd_exit);