lustre/osd-zfs/osd_object.c

   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) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2012, 2015, 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  * lustre/osd-zfs/osd_object.c
  37  *
  38  * Author: Alex Zhuravlev <bzzz@whamcloud.com>
  39  * Author: Mike Pershin <tappro@whamcloud.com>
  40  * Author: Johann Lombardi <johann@whamcloud.com>
  41  */
  42
  43 #define DEBUG_SUBSYSTEM S_OSD
  44
  45 #include <lustre_ver.h>
  46 #include <libcfs/libcfs.h>
  47 #include <obd_support.h>
  48 #include <lustre_net.h>
  49 #include <obd.h>
  50 #include <obd_class.h>
  51 #include <lustre_disk.h>
  52 #include <lustre_fid.h>
  53
  54 #include "osd_internal.h"
  55
  56 #include <sys/dnode.h>
  57 #include <sys/dbuf.h>
  58 #include <sys/spa.h>
  59 #include <sys/stat.h>
  60 #include <sys/zap.h>
  61 #include <sys/spa_impl.h>
  62 #include <sys/zfs_znode.h>
  63 #include <sys/dmu_tx.h>
  64 #include <sys/dmu_objset.h>
  65 #include <sys/dsl_prop.h>
  66 #include <sys/sa_impl.h>
  67 #include <sys/txg.h>
  68
  69 char *osd_obj_tag = "osd_object";
  70
  71 static struct dt_object_operations osd_obj_ops;
  72 static struct lu_object_operations osd_lu_obj_ops;
  73 extern struct dt_body_operations osd_body_ops;
  74 static struct dt_object_operations osd_obj_otable_it_ops;
  75
  76 extern struct kmem_cache *osd_object_kmem;
  77
  78 static void
  79 osd_object_sa_fini(struct osd_object *obj)
  80 {
  81         if (obj->oo_sa_hdl) {
  82                 sa_handle_destroy(obj->oo_sa_hdl);
  83                 obj->oo_sa_hdl = NULL;
  84         }
  85 }
  86
  87 static int
  88 osd_object_sa_init(struct osd_object *obj, struct osd_device *o)
  89 {
  90         int rc;
  91
  92         LASSERT(obj->oo_sa_hdl == NULL);
  93         LASSERT(obj->oo_db != NULL);
  94
  95         rc = -sa_handle_get(o->od_os, obj->oo_db->db_object, obj,
  96                             SA_HDL_PRIVATE, &obj->oo_sa_hdl);
  97         if (rc)
  98                 return rc;
  99
 100         /* Cache the xattr object id, valid for the life of the object */
 101         rc = -sa_lookup(obj->oo_sa_hdl, SA_ZPL_XATTR(o), &obj->oo_xattr, 8);
 102         if (rc == -ENOENT) {
 103                 obj->oo_xattr = ZFS_NO_OBJECT;
 104                 rc = 0;
 105         } else if (rc) {
 106                 osd_object_sa_fini(obj);
 107         }
 108
 109         return rc;
 110 }
 111
 112 /*
 113  * Add object to list of dirty objects in tx handle.
 114  */
 115 static void
 116 osd_object_sa_dirty_add(struct osd_object *obj, struct osd_thandle *oh)
 117 {
 118         if (!list_empty(&obj->oo_sa_linkage))
 119                 return;
 120
 121         down(&oh->ot_sa_lock);
 122         write_lock(&obj->oo_attr_lock);
 123         if (likely(list_empty(&obj->oo_sa_linkage)))
 124                 list_add(&obj->oo_sa_linkage, &oh->ot_sa_list);
 125         write_unlock(&obj->oo_attr_lock);
 126         up(&oh->ot_sa_lock);
 127 }
 128
 129 /*
 130  * Release spill block dbuf hold for all dirty SAs.
 131  */
 132 void osd_object_sa_dirty_rele(struct osd_thandle *oh)
 133 {
 134         struct osd_object *obj;
 135
 136         down(&oh->ot_sa_lock);
 137         while (!list_empty(&oh->ot_sa_list)) {
 138                 obj = list_entry(oh->ot_sa_list.next,
 139                                  struct osd_object, oo_sa_linkage);
 140                 sa_spill_rele(obj->oo_sa_hdl);
 141                 write_lock(&obj->oo_attr_lock);
 142                 list_del_init(&obj->oo_sa_linkage);
 143                 write_unlock(&obj->oo_attr_lock);
 144         }
 145         up(&oh->ot_sa_lock);
 146 }
 147
 148 /*
 149  * Update the SA and add the object to the dirty list.
 150  */
 151 int osd_object_sa_update(struct osd_object *obj, sa_attr_type_t type,
 152                          void *buf, uint32_t buflen, struct osd_thandle *oh)
 153 {
 154         int rc;
 155
 156         LASSERT(obj->oo_sa_hdl != NULL);
 157         LASSERT(oh->ot_tx != NULL);
 158
 159         rc = -sa_update(obj->oo_sa_hdl, type, buf, buflen, oh->ot_tx);
 160         osd_object_sa_dirty_add(obj, oh);
 161
 162         return rc;
 163 }
 164
 165 /*
 166  * Bulk update the SA and add the object to the dirty list.
 167  */
 168 static int
 169 osd_object_sa_bulk_update(struct osd_object *obj, sa_bulk_attr_t *attrs,
 170                           int count, struct osd_thandle *oh)
 171 {
 172         int rc;
 173
 174         LASSERT(obj->oo_sa_hdl != NULL);
 175         LASSERT(oh->ot_tx != NULL);
 176
 177         rc = -sa_bulk_update(obj->oo_sa_hdl, attrs, count, oh->ot_tx);
 178         osd_object_sa_dirty_add(obj, oh);
 179
 180         return rc;
 181 }
 182
 183 /*
 184  * Retrieve the attributes of a DMU object
 185  */
 186 int __osd_object_attr_get(const struct lu_env *env, struct osd_device *o,
 187                           struct osd_object *obj, struct lu_attr *la)
 188 {
 189         struct osa_attr *osa = &osd_oti_get(env)->oti_osa;
 190         sa_handle_t     *sa_hdl;
 191         sa_bulk_attr_t  *bulk;
 192         int              cnt = 0;
 193         int              rc;
 194         ENTRY;
 195
 196         LASSERT(obj->oo_db != NULL);
 197
 198         rc = -sa_handle_get(o->od_os, obj->oo_db->db_object, NULL,
 199                             SA_HDL_PRIVATE, &sa_hdl);
 200         if (rc)
 201                 RETURN(rc);
 202
 203         OBD_ALLOC(bulk, sizeof(sa_bulk_attr_t) * 9);
 204         if (bulk == NULL)
 205                 GOTO(out_sa, rc = -ENOMEM);
 206
 207         la->la_valid |= LA_ATIME | LA_MTIME | LA_CTIME | LA_MODE | LA_TYPE |
 208                         LA_SIZE | LA_UID | LA_GID | LA_FLAGS | LA_NLINK;
 209
 210         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_ATIME(o), NULL, osa->atime, 16);
 211         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MTIME(o), NULL, osa->mtime, 16);
 212         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CTIME(o), NULL, osa->ctime, 16);
 213         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MODE(o), NULL, &osa->mode, 8);
 214         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_SIZE(o), NULL, &osa->size, 8);
 215         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_LINKS(o), NULL, &osa->nlink, 8);
 216         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_UID(o), NULL, &osa->uid, 8);
 217         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_GID(o), NULL, &osa->gid, 8);
 218         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_FLAGS(o), NULL, &osa->flags, 8);
 219
 220         rc = -sa_bulk_lookup(sa_hdl, bulk, cnt);
 221         if (rc)
 222                 GOTO(out_bulk, rc);
 223
 224         la->la_atime = osa->atime[0];
 225         la->la_mtime = osa->mtime[0];
 226         la->la_ctime = osa->ctime[0];
 227         la->la_mode = osa->mode;
 228         la->la_uid = osa->uid;
 229         la->la_gid = osa->gid;
 230         la->la_nlink = osa->nlink;
 231         la->la_flags = attrs_zfs2fs(osa->flags);
 232         la->la_size = osa->size;
 233
 234         /* Try to get extra flag from LMA. Right now, only LMAI_ORPHAN
 235          * flags is stored in LMA, and it is only for orphan directory */
 236         if (S_ISDIR(la->la_mode) && dt_object_exists(&obj->oo_dt)) {
 237                 struct osd_thread_info *info = osd_oti_get(env);
 238                 struct lustre_mdt_attrs *lma;
 239                 struct lu_buf buf;
 240
 241                 lma = (struct lustre_mdt_attrs *)info->oti_buf;
 242                 buf.lb_buf = lma;
 243                 buf.lb_len = sizeof(info->oti_buf);
 244                 rc = osd_xattr_get(env, &obj->oo_dt, &buf, XATTR_NAME_LMA);
 245                 if (rc > 0) {
 246                         rc = 0;
 247                         lma->lma_incompat = le32_to_cpu(lma->lma_incompat);
 248                         obj->oo_lma_flags =
 249                                 lma_to_lustre_flags(lma->lma_incompat);
 250
 251                 } else if (rc == -ENODATA) {
 252                         rc = 0;
 253                 }
 254         }
 255
 256         if (S_ISCHR(la->la_mode) || S_ISBLK(la->la_mode)) {
 257                 rc = -sa_lookup(sa_hdl, SA_ZPL_RDEV(o), &osa->rdev, 8);
 258                 if (rc)
 259                         GOTO(out_bulk, rc);
 260                 la->la_rdev = osa->rdev;
 261                 la->la_valid |= LA_RDEV;
 262         }
 263 out_bulk:
 264         OBD_FREE(bulk, sizeof(sa_bulk_attr_t) * 9);
 265 out_sa:
 266         sa_handle_destroy(sa_hdl);
 267
 268         RETURN(rc);
 269 }
 270
 271 int __osd_obj2dbuf(const struct lu_env *env, objset_t *os,
 272                    uint64_t oid, dmu_buf_t **dbp)
 273 {
 274         dmu_object_info_t *doi = &osd_oti_get(env)->oti_doi;
 275         int rc;
 276
 277         rc = -sa_buf_hold(os, oid, osd_obj_tag, dbp);
 278         if (rc)
 279                 return rc;
 280
 281         dmu_object_info_from_db(*dbp, doi);
 282         if (unlikely (oid != DMU_USERUSED_OBJECT &&
 283             oid != DMU_GROUPUSED_OBJECT && doi->doi_bonus_type != DMU_OT_SA)) {
 284                 sa_buf_rele(*dbp, osd_obj_tag);
 285                 *dbp = NULL;
 286                 return -EINVAL;
 287         }
 288
 289         LASSERT(*dbp);
 290         LASSERT((*dbp)->db_object == oid);
 291         LASSERT((*dbp)->db_offset == -1);
 292         LASSERT((*dbp)->db_data != NULL);
 293
 294         return 0;
 295 }
 296
 297 /*
 298  * Concurrency: no concurrent access is possible that early in object
 299  * life-cycle.
 300  */
 301 struct lu_object *osd_object_alloc(const struct lu_env *env,
 302                                    const struct lu_object_header *hdr,
 303                                    struct lu_device *d)
 304 {
 305         struct osd_object *mo;
 306
 307         OBD_SLAB_ALLOC_PTR_GFP(mo, osd_object_kmem, GFP_NOFS);
 308         if (mo != NULL) {
 309                 struct lu_object *l;
 310
 311                 l = &mo->oo_dt.do_lu;
 312                 dt_object_init(&mo->oo_dt, NULL, d);
 313                 mo->oo_dt.do_ops = &osd_obj_ops;
 314                 l->lo_ops = &osd_lu_obj_ops;
 315                 INIT_LIST_HEAD(&mo->oo_sa_linkage);
 316                 INIT_LIST_HEAD(&mo->oo_unlinked_linkage);
 317                 init_rwsem(&mo->oo_sem);
 318                 sema_init(&mo->oo_guard, 1);
 319                 rwlock_init(&mo->oo_attr_lock);
 320                 mo->oo_destroy = OSD_DESTROY_NONE;
 321                 return l;
 322         } else {
 323                 return NULL;
 324         }
 325 }
 326
 327 /*
 328  * Concurrency: shouldn't matter.
 329  */
 330 int osd_object_init0(const struct lu_env *env, struct osd_object *obj)
 331 {
 332         struct osd_device       *osd = osd_obj2dev(obj);
 333         const struct lu_fid     *fid = lu_object_fid(&obj->oo_dt.do_lu);
 334         int                      rc = 0;
 335         ENTRY;
 336
 337         if (obj->oo_db == NULL)
 338                 RETURN(0);
 339
 340         /* object exist */
 341
 342         rc = osd_object_sa_init(obj, osd);
 343         if (rc)
 344                 RETURN(rc);
 345
 346         /* cache attrs in object */
 347         rc = __osd_object_attr_get(env, osd, obj, &obj->oo_attr);
 348         if (rc)
 349                 RETURN(rc);
 350
 351         if (likely(!fid_is_acct(fid)))
 352                 /* no body operations for accounting objects */
 353                 obj->oo_dt.do_body_ops = &osd_body_ops;
 354
 355         /*
 356          * initialize object before marking it existing
 357          */
 358         obj->oo_dt.do_lu.lo_header->loh_attr |= obj->oo_attr.la_mode & S_IFMT;
 359
 360         smp_mb();
 361         obj->oo_dt.do_lu.lo_header->loh_attr |= LOHA_EXISTS;
 362
 363         RETURN(0);
 364 }
 365
 366 static int osd_check_lma(const struct lu_env *env, struct osd_object *obj)
 367 {
 368         struct osd_thread_info  *info = osd_oti_get(env);
 369         struct lu_buf           buf;
 370         int                     rc;
 371         struct lustre_mdt_attrs *lma;
 372         ENTRY;
 373
 374         CLASSERT(sizeof(info->oti_buf) >= sizeof(*lma));
 375         lma = (struct lustre_mdt_attrs *)info->oti_buf;
 376         buf.lb_buf = lma;
 377         buf.lb_len = sizeof(info->oti_buf);
 378
 379         rc = osd_xattr_get(env, &obj->oo_dt, &buf, XATTR_NAME_LMA);
 380         if (rc > 0) {
 381                 rc = 0;
 382                 lustre_lma_swab(lma);
 383                 if (unlikely((lma->lma_incompat & ~LMA_INCOMPAT_SUPP) ||
 384                              CFS_FAIL_CHECK(OBD_FAIL_OSD_LMA_INCOMPAT))) {
 385                         CWARN("%s: unsupported incompat LMA feature(s) %#x for "
 386                               "fid = "DFID"\n", osd_obj2dev(obj)->od_svname,
 387                               lma->lma_incompat & ~LMA_INCOMPAT_SUPP,
 388                               PFID(lu_object_fid(&obj->oo_dt.do_lu)));
 389                         rc = -EOPNOTSUPP;
 390                 }
 391         } else if (rc == -ENODATA) {
 392                 /* haven't initialize LMA xattr */
 393                 rc = 0;
 394         }
 395
 396         RETURN(rc);
 397 }
 398
 399 /*
 400  * Concurrency: no concurrent access is possible that early in object
 401  * life-cycle.
 402  */
 403 static int osd_object_init(const struct lu_env *env, struct lu_object *l,
 404                            const struct lu_object_conf *conf)
 405 {
 406         struct osd_object       *obj = osd_obj(l);
 407         struct osd_device       *osd = osd_obj2dev(obj);
 408         uint64_t                 oid;
 409         int                      rc;
 410         ENTRY;
 411
 412         LASSERT(osd_invariant(obj));
 413
 414         if (fid_is_otable_it(&l->lo_header->loh_fid)) {
 415                 obj->oo_dt.do_ops = &osd_obj_otable_it_ops;
 416                 l->lo_header->loh_attr |= LOHA_EXISTS;
 417                 RETURN(0);
 418         }
 419
 420         rc = osd_fid_lookup(env, osd, lu_object_fid(l), &oid);
 421         if (rc == 0) {
 422                 LASSERT(obj->oo_db == NULL);
 423                 rc = __osd_obj2dbuf(env, osd->od_os, oid, &obj->oo_db);
 424                 /* EEXIST will be returned if object is being deleted in ZFS */
 425                 if (rc == -EEXIST) {
 426                         rc = 0;
 427                         GOTO(out, rc);
 428                 }
 429                 if (rc != 0) {
 430                         CERROR("%s: lookup "DFID"/"LPX64" failed: rc = %d\n",
 431                                osd->od_svname, PFID(lu_object_fid(l)), oid, rc);
 432                         GOTO(out, rc);
 433                 }
 434                 LASSERT(obj->oo_db);
 435                 rc = osd_object_init0(env, obj);
 436                 if (rc != 0)
 437                         GOTO(out, rc);
 438
 439                 rc = osd_check_lma(env, obj);
 440                 if (rc != 0)
 441                         GOTO(out, rc);
 442         } else if (rc == -ENOENT) {
 443                 rc = 0;
 444         }
 445         LASSERT(osd_invariant(obj));
 446 out:
 447         RETURN(rc);
 448 }
 449
 450 /*
 451  * Concurrency: no concurrent access is possible that late in object
 452  * life-cycle.
 453  */
 454 static void osd_object_free(const struct lu_env *env, struct lu_object *l)
 455 {
 456         struct osd_object *obj = osd_obj(l);
 457
 458         LASSERT(osd_invariant(obj));
 459
 460         dt_object_fini(&obj->oo_dt);
 461         OBD_SLAB_FREE_PTR(obj, osd_object_kmem);
 462 }
 463
 464 static int
 465 osd_object_unlinked_add(struct osd_object *obj, struct osd_thandle *oh)
 466 {
 467         int rc = -EBUSY;
 468
 469         down(&obj->oo_guard);
 470
 471         LASSERT(obj->oo_destroy == OSD_DESTROY_ASYNC);
 472
 473         if (likely(list_empty(&obj->oo_unlinked_linkage))) {
 474                 list_add(&obj->oo_unlinked_linkage, &oh->ot_unlinked_list);
 475                 rc = 0;
 476         }
 477
 478         up(&obj->oo_guard);
 479
 480         return rc;
 481 }
 482
 483 /* Default to max data size covered by a level-1 indirect block */
 484 static unsigned long osd_sync_destroy_max_size =
 485         1UL << (DN_MAX_INDBLKSHIFT - SPA_BLKPTRSHIFT + SPA_MAXBLOCKSHIFT);
 486 CFS_MODULE_PARM(osd_sync_destroy_max_size, "ul", ulong, 0444,
 487                 "Maximum object size to use synchronous destroy.");
 488
 489 static inline void
 490 osd_object_set_destroy_type(struct osd_object *obj)
 491 {
 492         /*
 493          * Lock-less OST_WRITE can race with OST_DESTROY, so set destroy type
 494          * only once and use it consistently thereafter.
 495          */
 496         down(&obj->oo_guard);
 497         if (obj->oo_destroy == OSD_DESTROY_NONE) {
 498                 if (obj->oo_attr.la_size <= osd_sync_destroy_max_size)
 499                         obj->oo_destroy = OSD_DESTROY_SYNC;
 500                 else /* Larger objects are destroyed asynchronously */
 501                         obj->oo_destroy = OSD_DESTROY_ASYNC;
 502         }
 503         up(&obj->oo_guard);
 504 }
 505
 506 static int osd_declare_object_destroy(const struct lu_env *env,
 507                                       struct dt_object *dt,
 508                                       struct thandle *th)
 509 {
 510         char                    *buf = osd_oti_get(env)->oti_str;
 511         const struct lu_fid     *fid = lu_object_fid(&dt->do_lu);
 512         struct osd_object       *obj = osd_dt_obj(dt);
 513         struct osd_device       *osd = osd_obj2dev(obj);
 514         struct osd_thandle      *oh;
 515         int                      rc;
 516         uint64_t                 zapid;
 517         ENTRY;
 518
 519         LASSERT(th != NULL);
 520         LASSERT(dt_object_exists(dt));
 521
 522         oh = container_of0(th, struct osd_thandle, ot_super);
 523         LASSERT(oh->ot_tx != NULL);
 524
 525         /* declare that we'll remove object from fid-dnode mapping */
 526         zapid = osd_get_name_n_idx(env, osd, fid, buf);
 527         dmu_tx_hold_bonus(oh->ot_tx, zapid);
 528         dmu_tx_hold_zap(oh->ot_tx, zapid, FALSE, buf);
 529
 530         osd_declare_xattrs_destroy(env, obj, oh);
 531
 532         /* declare that we'll remove object from inode accounting ZAPs */
 533         dmu_tx_hold_bonus(oh->ot_tx, osd->od_iusr_oid);
 534         dmu_tx_hold_zap(oh->ot_tx, osd->od_iusr_oid, FALSE, buf);
 535         dmu_tx_hold_bonus(oh->ot_tx, osd->od_igrp_oid);
 536         dmu_tx_hold_zap(oh->ot_tx, osd->od_igrp_oid, FALSE, buf);
 537
 538         /* one less inode */
 539         rc = osd_declare_quota(env, osd, obj->oo_attr.la_uid,
 540                                obj->oo_attr.la_gid, -1, oh, false, NULL, false);
 541         if (rc)
 542                 RETURN(rc);
 543
 544         /* data to be truncated */
 545         rc = osd_declare_quota(env, osd, obj->oo_attr.la_uid,
 546                                obj->oo_attr.la_gid, 0, oh, true, NULL, false);
 547         if (rc)
 548                 RETURN(rc);
 549
 550         osd_object_set_destroy_type(obj);
 551         if (obj->oo_destroy == OSD_DESTROY_SYNC)
 552                 dmu_tx_hold_free(oh->ot_tx, obj->oo_db->db_object,
 553                                  0, DMU_OBJECT_END);
 554         else
 555                 dmu_tx_hold_zap(oh->ot_tx, osd->od_unlinkedid, TRUE, NULL);
 556
 557         RETURN(0);
 558 }
 559
 560 static int osd_object_destroy(const struct lu_env *env,
 561                               struct dt_object *dt, struct thandle *th)
 562 {
 563         char                    *buf = osd_oti_get(env)->oti_str;
 564         struct osd_object       *obj = osd_dt_obj(dt);
 565         struct osd_device       *osd = osd_obj2dev(obj);
 566         const struct lu_fid     *fid = lu_object_fid(&dt->do_lu);
 567         struct osd_thandle      *oh;
 568         int                      rc;
 569         uint64_t                 oid, zapid;
 570         ENTRY;
 571
 572         LASSERT(obj->oo_db != NULL);
 573         LASSERT(dt_object_exists(dt));
 574         LASSERT(!lu_object_is_dying(dt->do_lu.lo_header));
 575
 576         oh = container_of0(th, struct osd_thandle, ot_super);
 577         LASSERT(oh != NULL);
 578         LASSERT(oh->ot_tx != NULL);
 579
 580         /* remove obj ref from index dir (it depends) */
 581         zapid = osd_get_name_n_idx(env, osd, fid, buf);
 582         rc = -zap_remove(osd->od_os, zapid, buf, oh->ot_tx);
 583         if (rc) {
 584                 CERROR("%s: zap_remove(%s) failed: rc = %d\n",
 585                        osd->od_svname, buf, rc);
 586                 GOTO(out, rc);
 587         }
 588
 589         rc = osd_xattrs_destroy(env, obj, oh);
 590         if (rc) {
 591                 CERROR("%s: cannot destroy xattrs for %s: rc = %d\n",
 592                        osd->od_svname, buf, rc);
 593                 GOTO(out, rc);
 594         }
 595
 596         /* Remove object from inode accounting. It is not fatal for the destroy
 597          * operation if something goes wrong while updating accounting, but we
 598          * still log an error message to notify the administrator */
 599         rc = -zap_increment_int(osd->od_os, osd->od_iusr_oid,
 600                                 obj->oo_attr.la_uid, -1, oh->ot_tx);
 601         if (rc)
 602                 CERROR("%s: failed to remove "DFID" from accounting ZAP for usr"
 603                        " %d: rc = %d\n", osd->od_svname, PFID(fid),
 604                        obj->oo_attr.la_uid, rc);
 605         rc = -zap_increment_int(osd->od_os, osd->od_igrp_oid,
 606                                 obj->oo_attr.la_gid, -1, oh->ot_tx);
 607         if (rc)
 608                 CERROR("%s: failed to remove "DFID" from accounting ZAP for grp"
 609                        " %d: rc = %d\n", osd->od_svname, PFID(fid),
 610                        obj->oo_attr.la_gid, rc);
 611
 612         oid = obj->oo_db->db_object;
 613         if (unlikely(obj->oo_destroy == OSD_DESTROY_NONE)) {
 614                 /* this may happen if the destroy wasn't declared
 615                  * e.g. when the object is created and then destroyed
 616                  * in the same transaction - we don't need additional
 617                  * space for destroy specifically */
 618                 LASSERT(obj->oo_attr.la_size <= osd_sync_destroy_max_size);
 619                 rc = -dmu_object_free(osd->od_os, oid, oh->ot_tx);
 620                 if (rc)
 621                         CERROR("%s: failed to free %s "LPU64": rc = %d\n",
 622                                osd->od_svname, buf, oid, rc);
 623         } else if (obj->oo_destroy == OSD_DESTROY_SYNC) {
 624                 rc = -dmu_object_free(osd->od_os, oid, oh->ot_tx);
 625                 if (rc)
 626                         CERROR("%s: failed to free %s "LPU64": rc = %d\n",
 627                                osd->od_svname, buf, oid, rc);
 628         } else { /* asynchronous destroy */
 629                 rc = osd_object_unlinked_add(obj, oh);
 630                 if (rc)
 631                         GOTO(out, rc);
 632
 633                 rc = -zap_add_int(osd->od_os, osd->od_unlinkedid,
 634                                   oid, oh->ot_tx);
 635                 if (rc)
 636                         CERROR("%s: zap_add_int() failed %s "LPU64": rc = %d\n",
 637                                osd->od_svname, buf, oid, rc);
 638         }
 639
 640 out:
 641         /* not needed in the cache anymore */
 642         set_bit(LU_OBJECT_HEARD_BANSHEE, &dt->do_lu.lo_header->loh_flags);
 643         if (rc == 0)
 644                 obj->oo_destroyed = 1;
 645         RETURN (0);
 646 }
 647
 648 static void osd_object_delete(const struct lu_env *env, struct lu_object *l)
 649 {
 650         struct osd_object *obj = osd_obj(l);
 651
 652         if (obj->oo_db != NULL) {
 653                 osd_object_sa_fini(obj);
 654                 if (obj->oo_sa_xattr) {
 655                         nvlist_free(obj->oo_sa_xattr);
 656                         obj->oo_sa_xattr = NULL;
 657                 }
 658                 sa_buf_rele(obj->oo_db, osd_obj_tag);
 659                 list_del(&obj->oo_sa_linkage);
 660                 obj->oo_db = NULL;
 661         }
 662 }
 663
 664 /*
 665  * Concurrency: ->loo_object_release() is called under site spin-lock.
 666  */
 667 static void osd_object_release(const struct lu_env *env,
 668                                struct lu_object *l)
 669 {
 670 }
 671
 672 /*
 673  * Concurrency: shouldn't matter.
 674  */
 675 static int osd_object_print(const struct lu_env *env, void *cookie,
 676                             lu_printer_t p, const struct lu_object *l)
 677 {
 678         struct osd_object *o = osd_obj(l);
 679
 680         return (*p)(env, cookie, LUSTRE_OSD_ZFS_NAME"-object@%p", o);
 681 }
 682
 683 static void osd_object_read_lock(const struct lu_env *env,
 684                                  struct dt_object *dt, unsigned role)
 685 {
 686         struct osd_object *obj = osd_dt_obj(dt);
 687
 688         LASSERT(osd_invariant(obj));
 689
 690         down_read_nested(&obj->oo_sem, role);
 691 }
 692
 693 static void osd_object_write_lock(const struct lu_env *env,
 694                                   struct dt_object *dt, unsigned role)
 695 {
 696         struct osd_object *obj = osd_dt_obj(dt);
 697
 698         LASSERT(osd_invariant(obj));
 699
 700         down_write_nested(&obj->oo_sem, role);
 701 }
 702
 703 static void osd_object_read_unlock(const struct lu_env *env,
 704                                    struct dt_object *dt)
 705 {
 706         struct osd_object *obj = osd_dt_obj(dt);
 707
 708         LASSERT(osd_invariant(obj));
 709         up_read(&obj->oo_sem);
 710 }
 711
 712 static void osd_object_write_unlock(const struct lu_env *env,
 713                                     struct dt_object *dt)
 714 {
 715         struct osd_object *obj = osd_dt_obj(dt);
 716
 717         LASSERT(osd_invariant(obj));
 718         up_write(&obj->oo_sem);
 719 }
 720
 721 static int osd_object_write_locked(const struct lu_env *env,
 722                                    struct dt_object *dt)
 723 {
 724         struct osd_object *obj = osd_dt_obj(dt);
 725         int rc = 1;
 726
 727         LASSERT(osd_invariant(obj));
 728
 729         if (down_write_trylock(&obj->oo_sem)) {
 730                 rc = 0;
 731                 up_write(&obj->oo_sem);
 732         }
 733         return rc;
 734 }
 735
 736 static int osd_attr_get(const struct lu_env *env,
 737                         struct dt_object *dt,
 738                         struct lu_attr *attr)
 739 {
 740         struct osd_object       *obj = osd_dt_obj(dt);
 741         uint64_t                 blocks;
 742         uint32_t                 blksize;
 743
 744         if (unlikely(!dt_object_exists(dt)))
 745                 return -ENOENT;
 746         if (unlikely(obj->oo_destroyed))
 747                 return -ENOENT;
 748
 749         LASSERT(osd_invariant(obj));
 750         LASSERT(obj->oo_db);
 751
 752         read_lock(&obj->oo_attr_lock);
 753         *attr = obj->oo_attr;
 754         if (obj->oo_lma_flags & LUSTRE_ORPHAN_FL)
 755                 attr->la_flags |= LUSTRE_ORPHAN_FL;
 756         read_unlock(&obj->oo_attr_lock);
 757
 758         /* with ZFS_DEBUG zrl_add_debug() called by DB_DNODE_ENTER()
 759          * from within sa_object_size() can block on a mutex, so
 760          * we can't call sa_object_size() holding rwlock */
 761         sa_object_size(obj->oo_sa_hdl, &blksize, &blocks);
 762         /* we do not control size of indices, so always calculate
 763          * it from number of blocks reported by DMU */
 764         if (S_ISDIR(attr->la_mode))
 765                 attr->la_size = 512 * blocks;
 766         /* Block size may be not set; suggest maximal I/O transfers. */
 767         if (blksize == 0)
 768                 blksize = osd_spa_maxblocksize(
 769                         dmu_objset_spa(osd_obj2dev(obj)->od_os));
 770
 771         attr->la_blksize = blksize;
 772         attr->la_blocks = blocks;
 773         attr->la_valid |= LA_BLOCKS | LA_BLKSIZE;
 774
 775         return 0;
 776 }
 777
 778 /* Simple wrapper on top of qsd API which implement quota transfer for osd
 779  * setattr needs. As a reminder, only the root user can change ownership of
 780  * a file, that's why EDQUOT & EINPROGRESS errors are discarded */
 781 static inline int qsd_transfer(const struct lu_env *env,
 782                                struct qsd_instance *qsd,
 783                                struct lquota_trans *trans, int qtype,
 784                                __u64 orig_id, __u64 new_id, __u64 bspace,
 785                                struct lquota_id_info *qi)
 786 {
 787         int     rc;
 788
 789         if (unlikely(qsd == NULL))
 790                 return 0;
 791
 792         LASSERT(qtype >= 0 && qtype < MAXQUOTAS);
 793         qi->lqi_type = qtype;
 794
 795         /* inode accounting */
 796         qi->lqi_is_blk = false;
 797
 798         /* one more inode for the new owner ... */
 799         qi->lqi_id.qid_uid = new_id;
 800         qi->lqi_space      = 1;
 801         rc = qsd_op_begin(env, qsd, trans, qi, NULL);
 802         if (rc == -EDQUOT || rc == -EINPROGRESS)
 803                 rc = 0;
 804         if (rc)
 805                 return rc;
 806
 807         /* and one less inode for the current id */
 808         qi->lqi_id.qid_uid = orig_id;;
 809         qi->lqi_space      = -1;
 810         /* can't get EDQUOT when reducing usage */
 811         rc = qsd_op_begin(env, qsd, trans, qi, NULL);
 812         if (rc == -EINPROGRESS)
 813                 rc = 0;
 814         if (rc)
 815                 return rc;
 816
 817         /* block accounting */
 818         qi->lqi_is_blk = true;
 819
 820         /* more blocks for the new owner ... */
 821         qi->lqi_id.qid_uid = new_id;
 822         qi->lqi_space      = bspace;
 823         rc = qsd_op_begin(env, qsd, trans, qi, NULL);
 824         if (rc == -EDQUOT || rc == -EINPROGRESS)
 825                 rc = 0;
 826         if (rc)
 827                 return rc;
 828
 829         /* and finally less blocks for the current owner */
 830         qi->lqi_id.qid_uid = orig_id;
 831         qi->lqi_space      = -bspace;
 832         rc = qsd_op_begin(env, qsd, trans, qi, NULL);
 833         /* can't get EDQUOT when reducing usage */
 834         if (rc == -EINPROGRESS)
 835                 rc = 0;
 836         return rc;
 837 }
 838
 839 static int osd_declare_attr_set(const struct lu_env *env,
 840                                 struct dt_object *dt,
 841                                 const struct lu_attr *attr,
 842                                 struct thandle *handle)
 843 {
 844         struct osd_thread_info  *info = osd_oti_get(env);
 845         char                    *buf = osd_oti_get(env)->oti_str;
 846         struct osd_object       *obj = osd_dt_obj(dt);
 847         struct osd_device       *osd = osd_obj2dev(obj);
 848         struct osd_thandle      *oh;
 849         uint64_t                 bspace;
 850         uint32_t                 blksize;
 851         int                      rc;
 852         ENTRY;
 853
 854         if (!dt_object_exists(dt)) {
 855                 /* XXX: sanity check that object creation is declared */
 856                 RETURN(0);
 857         }
 858
 859         LASSERT(handle != NULL);
 860         LASSERT(osd_invariant(obj));
 861
 862         oh = container_of0(handle, struct osd_thandle, ot_super);
 863
 864         LASSERT(obj->oo_sa_hdl != NULL);
 865         LASSERT(oh->ot_tx != NULL);
 866         dmu_tx_hold_sa(oh->ot_tx, obj->oo_sa_hdl, 0);
 867         if (oh->ot_tx->tx_err != 0)
 868                 RETURN(-oh->ot_tx->tx_err);
 869
 870         sa_object_size(obj->oo_sa_hdl, &blksize, &bspace);
 871         bspace = toqb(bspace * blksize);
 872
 873         __osd_xattr_declare_set(env, obj, sizeof(struct lustre_mdt_attrs),
 874                                 XATTR_NAME_LMA, oh);
 875
 876         if (attr && attr->la_valid & LA_UID) {
 877                 /* account for user inode tracking ZAP update */
 878                 dmu_tx_hold_bonus(oh->ot_tx, osd->od_iusr_oid);
 879                 dmu_tx_hold_zap(oh->ot_tx, osd->od_iusr_oid, TRUE, buf);
 880
 881                 /* quota enforcement for user */
 882                 if (attr->la_uid != obj->oo_attr.la_uid) {
 883                         rc = qsd_transfer(env, osd->od_quota_slave,
 884                                           &oh->ot_quota_trans, USRQUOTA,
 885                                           obj->oo_attr.la_uid, attr->la_uid,
 886                                           bspace, &info->oti_qi);
 887                         if (rc)
 888                                 RETURN(rc);
 889                 }
 890         }
 891         if (attr && attr->la_valid & LA_GID) {
 892                 /* account for user inode tracking ZAP update */
 893                 dmu_tx_hold_bonus(oh->ot_tx, osd->od_igrp_oid);
 894                 dmu_tx_hold_zap(oh->ot_tx, osd->od_igrp_oid, TRUE, buf);
 895
 896                 /* quota enforcement for group */
 897                 if (attr->la_gid != obj->oo_attr.la_gid) {
 898                         rc = qsd_transfer(env, osd->od_quota_slave,
 899                                           &oh->ot_quota_trans, GRPQUOTA,
 900                                           obj->oo_attr.la_gid, attr->la_gid,
 901                                           bspace, &info->oti_qi);
 902                         if (rc)
 903                                 RETURN(rc);
 904                 }
 905         }
 906
 907         RETURN(0);
 908 }
 909
 910 /*
 911  * Set the attributes of an object
 912  *
 913  * The transaction passed to this routine must have
 914  * dmu_tx_hold_bonus(tx, oid) called and then assigned
 915  * to a transaction group.
 916  */
 917 static int osd_attr_set(const struct lu_env *env, struct dt_object *dt,
 918                         const struct lu_attr *la, struct thandle *handle)
 919 {
 920         struct osd_thread_info  *info = osd_oti_get(env);
 921         struct osd_object       *obj = osd_dt_obj(dt);
 922         struct osd_device       *osd = osd_obj2dev(obj);
 923         struct osd_thandle      *oh;
 924         struct osa_attr         *osa = &info->oti_osa;
 925         sa_bulk_attr_t          *bulk;
 926         __u64                    valid = la->la_valid;
 927         int                      cnt;
 928         int                      rc = 0;
 929
 930         ENTRY;
 931         LASSERT(handle != NULL);
 932         LASSERT(dt_object_exists(dt));
 933         LASSERT(osd_invariant(obj));
 934         LASSERT(obj->oo_sa_hdl);
 935
 936         oh = container_of0(handle, struct osd_thandle, ot_super);
 937         /* Assert that the transaction has been assigned to a
 938            transaction group. */
 939         LASSERT(oh->ot_tx->tx_txg != 0);
 940
 941         /* Only allow set size for regular file */
 942         if (!S_ISREG(dt->do_lu.lo_header->loh_attr))
 943                 valid &= ~(LA_SIZE | LA_BLOCKS);
 944
 945         if (valid == 0)
 946                 RETURN(0);
 947
 948         if (valid & LA_FLAGS) {
 949                 struct lustre_mdt_attrs *lma;
 950                 struct lu_buf buf;
 951
 952                 if (la->la_flags & LUSTRE_LMA_FL_MASKS) {
 953                         CLASSERT(sizeof(info->oti_buf) >= sizeof(*lma));
 954                         lma = (struct lustre_mdt_attrs *)&info->oti_buf;
 955                         buf.lb_buf = lma;
 956                         buf.lb_len = sizeof(info->oti_buf);
 957                         rc = osd_xattr_get(env, &obj->oo_dt, &buf,
 958                                            XATTR_NAME_LMA);
 959                         if (rc > 0) {
 960                                 lma->lma_incompat =
 961                                         le32_to_cpu(lma->lma_incompat);
 962                                 lma->lma_incompat |=
 963                                         lustre_to_lma_flags(la->la_flags);
 964                                 lma->lma_incompat =
 965                                         cpu_to_le32(lma->lma_incompat);
 966                                 buf.lb_buf = lma;
 967                                 buf.lb_len = sizeof(*lma);
 968                                 rc = osd_xattr_set_internal(env, obj, &buf,
 969                                                             XATTR_NAME_LMA,
 970                                                             LU_XATTR_REPLACE,
 971                                                             oh);
 972                         }
 973                         if (rc < 0) {
 974                                 CWARN("%s: failed to set LMA flags: rc = %d\n",
 975                                        osd->od_svname, rc);
 976                                 RETURN(rc);
 977                         }
 978                 }
 979         }
 980
 981         OBD_ALLOC(bulk, sizeof(sa_bulk_attr_t) * 10);
 982         if (bulk == NULL)
 983                 RETURN(-ENOMEM);
 984
 985         /* do both accounting updates outside oo_attr_lock below */
 986         if ((valid & LA_UID) && (la->la_uid != obj->oo_attr.la_uid)) {
 987                 /* Update user accounting. Failure isn't fatal, but we still
 988                  * log an error message */
 989                 rc = -zap_increment_int(osd->od_os, osd->od_iusr_oid,
 990                                         la->la_uid, 1, oh->ot_tx);
 991                 if (rc)
 992                         CERROR("%s: failed to update accounting ZAP for user "
 993                                 "%d (%d)\n", osd->od_svname, la->la_uid, rc);
 994                 rc = -zap_increment_int(osd->od_os, osd->od_iusr_oid,
 995                                         obj->oo_attr.la_uid, -1, oh->ot_tx);
 996                 if (rc)
 997                         CERROR("%s: failed to update accounting ZAP for user "
 998                                 "%d (%d)\n", osd->od_svname,
 999                                 obj->oo_attr.la_uid, rc);
1000         }
1001         if ((valid & LA_GID) && (la->la_gid != obj->oo_attr.la_gid)) {
1002                 /* Update group accounting. Failure isn't fatal, but we still
1003                  * log an error message */
1004                 rc = -zap_increment_int(osd->od_os, osd->od_igrp_oid,
1005                                         la->la_gid, 1, oh->ot_tx);
1006                 if (rc)
1007                         CERROR("%s: failed to update accounting ZAP for user "
1008                                 "%d (%d)\n", osd->od_svname, la->la_gid, rc);
1009                 rc = -zap_increment_int(osd->od_os, osd->od_igrp_oid,
1010                                         obj->oo_attr.la_gid, -1, oh->ot_tx);
1011                 if (rc)
1012                         CERROR("%s: failed to update accounting ZAP for user "
1013                                 "%d (%d)\n", osd->od_svname,
1014                                 obj->oo_attr.la_gid, rc);
1015         }
1016
1017         write_lock(&obj->oo_attr_lock);
1018         cnt = 0;
1019         if (valid & LA_ATIME) {
1020                 osa->atime[0] = obj->oo_attr.la_atime = la->la_atime;
1021                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_ATIME(osd), NULL,
1022                                  osa->atime, 16);
1023         }
1024         if (valid & LA_MTIME) {
1025                 osa->mtime[0] = obj->oo_attr.la_mtime = la->la_mtime;
1026                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MTIME(osd), NULL,
1027                                  osa->mtime, 16);
1028         }
1029         if (valid & LA_CTIME) {
1030                 osa->ctime[0] = obj->oo_attr.la_ctime = la->la_ctime;
1031                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CTIME(osd), NULL,
1032                                  osa->ctime, 16);
1033         }
1034         if (valid & LA_MODE) {
1035                 /* mode is stored along with type, so read it first */
1036                 obj->oo_attr.la_mode = (obj->oo_attr.la_mode & S_IFMT) |
1037                         (la->la_mode & ~S_IFMT);
1038                 osa->mode = obj->oo_attr.la_mode;
1039                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MODE(osd), NULL,
1040                                  &osa->mode, 8);
1041         }
1042         if (valid & LA_SIZE) {
1043                 osa->size = obj->oo_attr.la_size = la->la_size;
1044                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_SIZE(osd), NULL,
1045                                  &osa->size, 8);
1046         }
1047         if (valid & LA_NLINK) {
1048                 osa->nlink = obj->oo_attr.la_nlink = la->la_nlink;
1049                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_LINKS(osd), NULL,
1050                                  &osa->nlink, 8);
1051         }
1052         if (valid & LA_RDEV) {
1053                 osa->rdev = obj->oo_attr.la_rdev = la->la_rdev;
1054                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_RDEV(osd), NULL,
1055                                  &osa->rdev, 8);
1056         }
1057         if (valid & LA_FLAGS) {
1058                 osa->flags = attrs_fs2zfs(la->la_flags);
1059                 /* many flags are not supported by zfs, so ensure a good cached
1060                  * copy */
1061                 obj->oo_attr.la_flags = attrs_zfs2fs(osa->flags);
1062                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_FLAGS(osd), NULL,
1063                                  &osa->flags, 8);
1064         }
1065         if (valid & LA_UID) {
1066                 osa->uid = obj->oo_attr.la_uid = la->la_uid;
1067                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_UID(osd), NULL,
1068                                  &osa->uid, 8);
1069         }
1070         if (valid & LA_GID) {
1071                 osa->gid = obj->oo_attr.la_gid = la->la_gid;
1072                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_GID(osd), NULL,
1073                                  &osa->gid, 8);
1074         }
1075         obj->oo_attr.la_valid |= valid;
1076         write_unlock(&obj->oo_attr_lock);
1077
1078         rc = osd_object_sa_bulk_update(obj, bulk, cnt, oh);
1079
1080         OBD_FREE(bulk, sizeof(sa_bulk_attr_t) * 10);
1081         RETURN(rc);
1082 }
1083
1084 /*
1085  * Object creation.
1086  *
1087  * XXX temporary solution.
1088  */
1089
1090 static void osd_ah_init(const struct lu_env *env, struct dt_allocation_hint *ah,
1091                         struct dt_object *parent, struct dt_object *child,
1092                         umode_t child_mode)
1093 {
1094         LASSERT(ah);
1095
1096         ah->dah_parent = parent;
1097         ah->dah_mode = child_mode;
1098 }
1099
1100 static int osd_declare_object_create(const struct lu_env *env,
1101                                      struct dt_object *dt,
1102                                      struct lu_attr *attr,
1103                                      struct dt_allocation_hint *hint,
1104                                      struct dt_object_format *dof,
1105                                      struct thandle *handle)
1106 {
1107         char                    *buf = osd_oti_get(env)->oti_str;
1108         const struct lu_fid     *fid = lu_object_fid(&dt->do_lu);
1109         struct osd_object       *obj = osd_dt_obj(dt);
1110         struct osd_device       *osd = osd_obj2dev(obj);
1111         struct osd_thandle      *oh;
1112         uint64_t                 zapid;
1113         int                      rc;
1114         ENTRY;
1115
1116         LASSERT(dof);
1117
1118         switch (dof->dof_type) {
1119                 case DFT_REGULAR:
1120                 case DFT_SYM:
1121                 case DFT_NODE:
1122                         if (obj->oo_dt.do_body_ops == NULL)
1123                                 obj->oo_dt.do_body_ops = &osd_body_ops;
1124                         break;
1125                 default:
1126                         break;
1127         }
1128
1129         LASSERT(handle != NULL);
1130         oh = container_of0(handle, struct osd_thandle, ot_super);
1131         LASSERT(oh->ot_tx != NULL);
1132
1133         switch (dof->dof_type) {
1134                 case DFT_DIR:
1135                         dt->do_index_ops = &osd_dir_ops;
1136                 case DFT_INDEX:
1137                         /* for zap create */
1138                         dmu_tx_hold_zap(oh->ot_tx, DMU_NEW_OBJECT, 1, NULL);
1139                         break;
1140                 case DFT_REGULAR:
1141                 case DFT_SYM:
1142                 case DFT_NODE:
1143                         /* first, we'll create new object */
1144                         dmu_tx_hold_bonus(oh->ot_tx, DMU_NEW_OBJECT);
1145                         break;
1146
1147                 default:
1148                         LBUG();
1149                         break;
1150         }
1151
1152         /* and we'll add it to some mapping */
1153         zapid = osd_get_name_n_idx(env, osd, fid, buf);
1154         dmu_tx_hold_bonus(oh->ot_tx, zapid);
1155         dmu_tx_hold_zap(oh->ot_tx, zapid, TRUE, buf);
1156
1157         /* we will also update inode accounting ZAPs */
1158         dmu_tx_hold_bonus(oh->ot_tx, osd->od_iusr_oid);
1159         dmu_tx_hold_zap(oh->ot_tx, osd->od_iusr_oid, TRUE, buf);
1160         dmu_tx_hold_bonus(oh->ot_tx, osd->od_igrp_oid);
1161         dmu_tx_hold_zap(oh->ot_tx, osd->od_igrp_oid, TRUE, buf);
1162
1163         dmu_tx_hold_sa_create(oh->ot_tx, ZFS_SA_BASE_ATTR_SIZE);
1164
1165         __osd_xattr_declare_set(env, obj, sizeof(struct lustre_mdt_attrs),
1166                                 XATTR_NAME_LMA, oh);
1167
1168         rc = osd_declare_quota(env, osd, attr->la_uid, attr->la_gid, 1, oh,
1169                                false, NULL, false);
1170         RETURN(rc);
1171 }
1172
1173 int __osd_attr_init(const struct lu_env *env, struct osd_device *osd,
1174                     uint64_t oid, dmu_tx_t *tx, struct lu_attr *la,
1175                     uint64_t parent)
1176 {
1177         sa_bulk_attr_t  *bulk;
1178         sa_handle_t     *sa_hdl;
1179         struct osa_attr *osa = &osd_oti_get(env)->oti_osa;
1180         uint64_t         gen;
1181         uint64_t         crtime[2];
1182         timestruc_t      now;
1183         int              cnt;
1184         int              rc;
1185
1186         gethrestime(&now);
1187         gen = dmu_tx_get_txg(tx);
1188
1189         ZFS_TIME_ENCODE(&now, crtime);
1190
1191         osa->atime[0] = la->la_atime;
1192         osa->ctime[0] = la->la_ctime;
1193         osa->mtime[0] = la->la_mtime;
1194         osa->mode = la->la_mode;
1195         osa->uid = la->la_uid;
1196         osa->gid = la->la_gid;
1197         osa->rdev = la->la_rdev;
1198         osa->nlink = la->la_nlink;
1199         osa->flags = attrs_fs2zfs(la->la_flags);
1200         osa->size  = la->la_size;
1201
1202         /* Now add in all of the "SA" attributes */
1203         rc = -sa_handle_get(osd->od_os, oid, NULL, SA_HDL_PRIVATE, &sa_hdl);
1204         if (rc)
1205                 return rc;
1206
1207         OBD_ALLOC(bulk, sizeof(sa_bulk_attr_t) * 13);
1208         if (bulk == NULL) {
1209                 rc = -ENOMEM;
1210                 goto out;
1211         }
1212         /*
1213          * we need to create all SA below upon object create.
1214          *
1215          * XXX The attribute order matters since the accounting callback relies
1216          * on static offsets (i.e. SA_*_OFFSET, see zfs_space_delta_cb()) to
1217          * look up the UID/GID attributes. Moreover, the callback does not seem
1218          * to support the spill block.
1219          * We define attributes in the same order as SA_*_OFFSET in order to
1220          * work around the problem. See ORI-610.
1221          */
1222         cnt = 0;
1223         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MODE(osd), NULL, &osa->mode, 8);
1224         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_SIZE(osd), NULL, &osa->size, 8);
1225         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_GEN(osd), NULL, &gen, 8);
1226         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_UID(osd), NULL, &osa->uid, 8);
1227         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_GID(osd), NULL, &osa->gid, 8);
1228         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_PARENT(osd), NULL, &parent, 8);
1229         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_FLAGS(osd), NULL, &osa->flags, 8);
1230         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_ATIME(osd), NULL, osa->atime, 16);
1231         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MTIME(osd), NULL, osa->mtime, 16);
1232         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CTIME(osd), NULL, osa->ctime, 16);
1233         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CRTIME(osd), NULL, crtime, 16);
1234         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_LINKS(osd), NULL, &osa->nlink, 8);
1235         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_RDEV(osd), NULL, &osa->rdev, 8);
1236
1237         rc = -sa_replace_all_by_template(sa_hdl, bulk, cnt, tx);
1238
1239         OBD_FREE(bulk, sizeof(sa_bulk_attr_t) * 13);
1240 out:
1241         sa_handle_destroy(sa_hdl);
1242         return rc;
1243 }
1244
1245 /*
1246  * The transaction passed to this routine must have
1247  * dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT) called and then assigned
1248  * to a transaction group.
1249  */
1250 int __osd_object_create(const struct lu_env *env, struct osd_object *obj,
1251                         dmu_buf_t **dbp, dmu_tx_t *tx, struct lu_attr *la,
1252                         uint64_t parent)
1253 {
1254         uint64_t             oid;
1255         int                  rc;
1256         struct osd_device   *osd = osd_obj2dev(obj);
1257         const struct lu_fid *fid = lu_object_fid(&obj->oo_dt.do_lu);
1258         dmu_object_type_t    type = DMU_OT_PLAIN_FILE_CONTENTS;
1259
1260         /* Assert that the transaction has been assigned to a
1261            transaction group. */
1262         LASSERT(tx->tx_txg != 0);
1263
1264         /* Use DMU_OTN_UINT8_METADATA for local objects so their data blocks
1265          * would get an additional ditto copy */
1266         if (unlikely(S_ISREG(la->la_mode) &&
1267                      fid_seq_is_local_file(fid_seq(fid))))
1268                 type = DMU_OTN_UINT8_METADATA;
1269
1270         /* Create a new DMU object. */
1271         oid = dmu_object_alloc(osd->od_os, type, 0,
1272                                DMU_OT_SA, DN_MAX_BONUSLEN, tx);
1273         rc = -sa_buf_hold(osd->od_os, oid, osd_obj_tag, dbp);
1274         LASSERTF(rc == 0, "sa_buf_hold "LPU64" failed: %d\n", oid, rc);
1275
1276         LASSERT(la->la_valid & LA_MODE);
1277         la->la_size = 0;
1278         la->la_nlink = 1;
1279
1280         rc = __osd_attr_init(env, osd, oid, tx, la, parent);
1281         if (rc != 0) {
1282                 sa_buf_rele(*dbp, osd_obj_tag);
1283                 *dbp = NULL;
1284                 dmu_object_free(osd->od_os, oid, tx);
1285                 return rc;
1286         }
1287
1288         return 0;
1289 }
1290
1291 /*
1292  * The transaction passed to this routine must have
1293  * dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, ...) called and then assigned
1294  * to a transaction group.
1295  *
1296  * Using ZAP_FLAG_HASH64 will force the ZAP to always be a FAT ZAP.
1297  * This is fine for directories today, because storing the FID in the dirent
1298  * will also require a FAT ZAP.  If there is a new type of micro ZAP created
1299  * then we might need to re-evaluate the use of this flag and instead do
1300  * a conversion from the different internal ZAP hash formats being used. */
1301 int __osd_zap_create(const struct lu_env *env, struct osd_device *osd,
1302                      dmu_buf_t **zap_dbp, dmu_tx_t *tx,
1303                      struct lu_attr *la, uint64_t parent, zap_flags_t flags)
1304 {
1305         uint64_t oid;
1306         int      rc;
1307
1308         /* Assert that the transaction has been assigned to a
1309            transaction group. */
1310         LASSERT(tx->tx_txg != 0);
1311
1312         oid = zap_create_flags(osd->od_os, 0, flags | ZAP_FLAG_HASH64,
1313                                DMU_OT_DIRECTORY_CONTENTS,
1314                                14, /* == ZFS fzap_default_block_shift */
1315                                DN_MAX_INDBLKSHIFT, /* indirect block shift */
1316                                DMU_OT_SA, DN_MAX_BONUSLEN, tx);
1317
1318         rc = -sa_buf_hold(osd->od_os, oid, osd_obj_tag, zap_dbp);
1319         if (rc)
1320                 return rc;
1321
1322         LASSERT(la->la_valid & LA_MODE);
1323         la->la_size = 2;
1324         la->la_nlink = 1;
1325
1326         return __osd_attr_init(env, osd, oid, tx, la, parent);
1327 }
1328
1329 static dmu_buf_t *osd_mkidx(const struct lu_env *env, struct osd_object *obj,
1330                             struct lu_attr *la, uint64_t parent,
1331                             struct osd_thandle *oh)
1332 {
1333         dmu_buf_t *db;
1334         int        rc;
1335
1336         /* Index file should be created as regular file in order not to confuse
1337          * ZPL which could interpret them as directory.
1338          * We set ZAP_FLAG_UINT64_KEY to let ZFS know than we are going to use
1339          * binary keys */
1340         LASSERT(S_ISREG(la->la_mode));
1341         rc = __osd_zap_create(env, osd_obj2dev(obj), &db, oh->ot_tx, la, parent,
1342                               ZAP_FLAG_UINT64_KEY);
1343         if (rc)
1344                 return ERR_PTR(rc);
1345         return db;
1346 }
1347
1348 static dmu_buf_t *osd_mkdir(const struct lu_env *env, struct osd_object *obj,
1349                             struct lu_attr *la, uint64_t parent,
1350                             struct osd_thandle *oh)
1351 {
1352         dmu_buf_t *db;
1353         int        rc;
1354
1355         LASSERT(S_ISDIR(la->la_mode));
1356         rc = __osd_zap_create(env, osd_obj2dev(obj), &db,
1357                               oh->ot_tx, la, parent, 0);
1358         if (rc)
1359                 return ERR_PTR(rc);
1360         return db;
1361 }
1362
1363 static dmu_buf_t *osd_mkreg(const struct lu_env *env, struct osd_object *obj,
1364                             struct lu_attr *la, uint64_t parent,
1365                             struct osd_thandle *oh)
1366 {
1367         dmu_buf_t         *db;
1368         int                rc;
1369         struct osd_device *osd = osd_obj2dev(obj);
1370
1371         LASSERT(S_ISREG(la->la_mode));
1372         rc = __osd_object_create(env, obj, &db, oh->ot_tx, la, parent);
1373         if (rc)
1374                 return ERR_PTR(rc);
1375
1376         /*
1377          * XXX: This heuristic is non-optimal.  It would be better to
1378          * increase the blocksize up to osd->od_max_blksz during the write.
1379          * This is exactly how the ZPL behaves and it ensures that the right
1380          * blocksize is selected based on the file size rather than the
1381          * making broad assumptions based on the osd type.
1382          */
1383         if (!lu_device_is_md(osd2lu_dev(osd))) {
1384                 rc = -dmu_object_set_blocksize(osd->od_os, db->db_object,
1385                                                osd->od_max_blksz, 0, oh->ot_tx);
1386                 if (unlikely(rc)) {
1387                         CERROR("%s: can't change blocksize: %d\n",
1388                                osd->od_svname, rc);
1389                         return ERR_PTR(rc);
1390                 }
1391         }
1392
1393         return db;
1394 }
1395
1396 static dmu_buf_t *osd_mksym(const struct lu_env *env, struct osd_object *obj,
1397                             struct lu_attr *la, uint64_t parent,
1398                             struct osd_thandle *oh)
1399 {
1400         dmu_buf_t *db;
1401         int        rc;
1402
1403         LASSERT(S_ISLNK(la->la_mode));
1404         rc = __osd_object_create(env, obj, &db, oh->ot_tx, la, parent);
1405         if (rc)
1406                 return ERR_PTR(rc);
1407         return db;
1408 }
1409
1410 static dmu_buf_t *osd_mknod(const struct lu_env *env, struct osd_object *obj,
1411                             struct lu_attr *la, uint64_t parent,
1412                             struct osd_thandle *oh)
1413 {
1414         dmu_buf_t *db;
1415         int        rc;
1416
1417         la->la_valid = LA_MODE;
1418         if (S_ISCHR(la->la_mode) || S_ISBLK(la->la_mode))
1419                 la->la_valid |= LA_RDEV;
1420
1421         rc = __osd_object_create(env, obj, &db, oh->ot_tx, la, parent);
1422         if (rc)
1423                 return ERR_PTR(rc);
1424         return db;
1425 }
1426
1427 typedef dmu_buf_t *(*osd_obj_type_f)(const struct lu_env *env,
1428                                      struct osd_object *obj,
1429                                      struct lu_attr *la,
1430                                      uint64_t parent,
1431                                      struct osd_thandle *oh);
1432
1433 static osd_obj_type_f osd_create_type_f(enum dt_format_type type)
1434 {
1435         osd_obj_type_f result;
1436
1437         switch (type) {
1438         case DFT_DIR:
1439                 result = osd_mkdir;
1440                 break;
1441         case DFT_INDEX:
1442                 result = osd_mkidx;
1443                 break;
1444         case DFT_REGULAR:
1445                 result = osd_mkreg;
1446                 break;
1447         case DFT_SYM:
1448                 result = osd_mksym;
1449                 break;
1450         case DFT_NODE:
1451                 result = osd_mknod;
1452                 break;
1453         default:
1454                 LBUG();
1455                 break;
1456         }
1457         return result;
1458 }
1459
1460 /*
1461  * Primitives for directory (i.e. ZAP) handling
1462  */
1463 static inline int osd_init_lma(const struct lu_env *env, struct osd_object *obj,
1464                                const struct lu_fid *fid, struct osd_thandle *oh)
1465 {
1466         struct osd_thread_info  *info = osd_oti_get(env);
1467         struct lustre_mdt_attrs *lma = &info->oti_mdt_attrs;
1468         struct lu_buf            buf;
1469         int rc;
1470
1471         lustre_lma_init(lma, fid, 0, 0);
1472         lustre_lma_swab(lma);
1473         buf.lb_buf = lma;
1474         buf.lb_len = sizeof(*lma);
1475
1476         rc = osd_xattr_set_internal(env, obj, &buf, XATTR_NAME_LMA,
1477                                     LU_XATTR_CREATE, oh);
1478
1479         return rc;
1480 }
1481
1482 /*
1483  * Concurrency: @dt is write locked.
1484  */
1485 static int osd_object_create(const struct lu_env *env, struct dt_object *dt,
1486                              struct lu_attr *attr,
1487                              struct dt_allocation_hint *hint,
1488                              struct dt_object_format *dof,
1489                              struct thandle *th)
1490 {
1491         struct zpl_direntry     *zde = &osd_oti_get(env)->oti_zde.lzd_reg;
1492         const struct lu_fid     *fid = lu_object_fid(&dt->do_lu);
1493         struct osd_object       *obj = osd_dt_obj(dt);
1494         struct osd_device       *osd = osd_obj2dev(obj);
1495         char                    *buf = osd_oti_get(env)->oti_str;
1496         struct osd_thandle      *oh;
1497         dmu_buf_t               *db;
1498         uint64_t                 zapid;
1499         int                      rc;
1500
1501         ENTRY;
1502
1503         /* concurrent create declarations should not see
1504          * the object inconsistent (db, attr, etc).
1505          * in regular cases acquisition should be cheap */
1506         down(&obj->oo_guard);
1507
1508         LASSERT(osd_invariant(obj));
1509         LASSERT(!dt_object_exists(dt));
1510         LASSERT(dof != NULL);
1511
1512         LASSERT(th != NULL);
1513         oh = container_of0(th, struct osd_thandle, ot_super);
1514
1515         /*
1516          * XXX missing: Quote handling.
1517          */
1518
1519         LASSERT(obj->oo_db == NULL);
1520
1521         /* to follow ZFS on-disk format we need
1522          * to initialize parent dnode properly */
1523         zapid = 0;
1524         if (hint != NULL && hint->dah_parent != NULL &&
1525             !dt_object_remote(hint->dah_parent))
1526                 zapid = osd_dt_obj(hint->dah_parent)->oo_db->db_object;
1527
1528         db = osd_create_type_f(dof->dof_type)(env, obj, attr, zapid, oh);
1529         if (IS_ERR(db))
1530                 GOTO(out, rc = PTR_ERR(db));
1531
1532         zde->zde_pad = 0;
1533         zde->zde_dnode = db->db_object;
1534         zde->zde_type = IFTODT(attr->la_mode & S_IFMT);
1535
1536         zapid = osd_get_name_n_idx(env, osd, fid, buf);
1537
1538         rc = -zap_add(osd->od_os, zapid, buf, 8, 1, zde, oh->ot_tx);
1539         if (rc)
1540                 GOTO(out, rc);
1541
1542         /* Add new object to inode accounting.
1543          * Errors are not considered as fatal */
1544         rc = -zap_increment_int(osd->od_os, osd->od_iusr_oid,
1545                                 (attr->la_valid & LA_UID) ? attr->la_uid : 0, 1,
1546                                 oh->ot_tx);
1547         if (rc)
1548                 CERROR("%s: failed to add "DFID" to accounting ZAP for usr %d "
1549                         "(%d)\n", osd->od_svname, PFID(fid), attr->la_uid, rc);
1550         rc = -zap_increment_int(osd->od_os, osd->od_igrp_oid,
1551                                 (attr->la_valid & LA_GID) ? attr->la_gid : 0, 1,
1552                                 oh->ot_tx);
1553         if (rc)
1554                 CERROR("%s: failed to add "DFID" to accounting ZAP for grp %d "
1555                         "(%d)\n", osd->od_svname, PFID(fid), attr->la_gid, rc);
1556
1557         /* configure new osd object */
1558         obj->oo_db = db;
1559         rc = osd_object_init0(env, obj);
1560         LASSERT(ergo(rc == 0, dt_object_exists(dt)));
1561         LASSERT(osd_invariant(obj));
1562
1563         rc = osd_init_lma(env, obj, fid, oh);
1564         if (rc) {
1565                 CERROR("%s: can not set LMA on "DFID": rc = %d\n",
1566                        osd->od_svname, PFID(fid), rc);
1567                 /* ignore errors during LMA initialization */
1568                 rc = 0;
1569         }
1570
1571 out:
1572         up(&obj->oo_guard);
1573         RETURN(rc);
1574 }
1575
1576 static int osd_declare_object_ref_add(const struct lu_env *env,
1577                                       struct dt_object *dt,
1578                                       struct thandle *th)
1579 {
1580         return osd_declare_attr_set(env, dt, NULL, th);
1581 }
1582
1583 /*
1584  * Concurrency: @dt is write locked.
1585  */
1586 static int osd_object_ref_add(const struct lu_env *env,
1587                               struct dt_object *dt,
1588                               struct thandle *handle)
1589 {
1590         struct osd_object       *obj = osd_dt_obj(dt);
1591         struct osd_thandle      *oh;
1592         struct osd_device       *osd = osd_obj2dev(obj);
1593         uint64_t                 nlink;
1594         int rc;
1595
1596         ENTRY;
1597
1598         if (!dt_object_exists(dt))
1599                 RETURN(-ENOENT);
1600
1601         LASSERT(osd_invariant(obj));
1602         LASSERT(obj->oo_sa_hdl != NULL);
1603
1604         oh = container_of0(handle, struct osd_thandle, ot_super);
1605
1606         write_lock(&obj->oo_attr_lock);
1607         nlink = ++obj->oo_attr.la_nlink;
1608         write_unlock(&obj->oo_attr_lock);
1609
1610         rc = osd_object_sa_update(obj, SA_ZPL_LINKS(osd), &nlink, 8, oh);
1611         return rc;
1612 }
1613
1614 static int osd_declare_object_ref_del(const struct lu_env *env,
1615                                       struct dt_object *dt,
1616                                       struct thandle *handle)
1617 {
1618         return osd_declare_attr_set(env, dt, NULL, handle);
1619 }
1620
1621 /*
1622  * Concurrency: @dt is write locked.
1623  */
1624 static int osd_object_ref_del(const struct lu_env *env,
1625                               struct dt_object *dt,
1626                               struct thandle *handle)
1627 {
1628         struct osd_object       *obj = osd_dt_obj(dt);
1629         struct osd_thandle      *oh;
1630         struct osd_device       *osd = osd_obj2dev(obj);
1631         uint64_t                 nlink;
1632         int                      rc;
1633
1634         ENTRY;
1635
1636         LASSERT(osd_invariant(obj));
1637         LASSERT(dt_object_exists(dt));
1638         LASSERT(obj->oo_sa_hdl != NULL);
1639
1640         oh = container_of0(handle, struct osd_thandle, ot_super);
1641         LASSERT(!lu_object_is_dying(dt->do_lu.lo_header));
1642
1643         write_lock(&obj->oo_attr_lock);
1644         nlink = --obj->oo_attr.la_nlink;
1645         write_unlock(&obj->oo_attr_lock);
1646
1647         rc = osd_object_sa_update(obj, SA_ZPL_LINKS(osd), &nlink, 8, oh);
1648         RETURN(rc);
1649 }
1650
1651 static int osd_object_sync(const struct lu_env *env, struct dt_object *dt,
1652                            __u64 start, __u64 end)
1653 {
1654         struct osd_device *osd = osd_obj2dev(osd_dt_obj(dt));
1655         ENTRY;
1656
1657         /* XXX: no other option than syncing the whole filesystem until we
1658          * support ZIL.  If the object tracked the txg that it was last
1659          * modified in, it could pass that txg here instead of "0".  Maybe
1660          * the changes are already committed, so no wait is needed at all? */
1661         txg_wait_synced(dmu_objset_pool(osd->od_os), 0ULL);
1662
1663         RETURN(0);
1664 }
1665
1666 static struct dt_object_operations osd_obj_ops = {
1667         .do_read_lock           = osd_object_read_lock,
1668         .do_write_lock          = osd_object_write_lock,
1669         .do_read_unlock         = osd_object_read_unlock,
1670         .do_write_unlock        = osd_object_write_unlock,
1671         .do_write_locked        = osd_object_write_locked,
1672         .do_attr_get            = osd_attr_get,
1673         .do_declare_attr_set    = osd_declare_attr_set,
1674         .do_attr_set            = osd_attr_set,
1675         .do_ah_init             = osd_ah_init,
1676         .do_declare_create      = osd_declare_object_create,
1677         .do_create              = osd_object_create,
1678         .do_declare_destroy     = osd_declare_object_destroy,
1679         .do_destroy             = osd_object_destroy,
1680         .do_index_try           = osd_index_try,
1681         .do_declare_ref_add     = osd_declare_object_ref_add,
1682         .do_ref_add             = osd_object_ref_add,
1683         .do_declare_ref_del     = osd_declare_object_ref_del,
1684         .do_ref_del             = osd_object_ref_del,
1685         .do_xattr_get           = osd_xattr_get,
1686         .do_declare_xattr_set   = osd_declare_xattr_set,
1687         .do_xattr_set           = osd_xattr_set,
1688         .do_declare_xattr_del   = osd_declare_xattr_del,
1689         .do_xattr_del           = osd_xattr_del,
1690         .do_xattr_list          = osd_xattr_list,
1691         .do_object_sync         = osd_object_sync,
1692 };
1693
1694 static struct lu_object_operations osd_lu_obj_ops = {
1695         .loo_object_init        = osd_object_init,
1696         .loo_object_delete      = osd_object_delete,
1697         .loo_object_release     = osd_object_release,
1698         .loo_object_free        = osd_object_free,
1699         .loo_object_print       = osd_object_print,
1700         .loo_object_invariant   = osd_object_invariant,
1701 };
1702
1703 static int osd_otable_it_attr_get(const struct lu_env *env,
1704                                 struct dt_object *dt,
1705                                 struct lu_attr *attr)
1706 {
1707         attr->la_valid = 0;
1708         return 0;
1709 }
1710
1711 static struct dt_object_operations osd_obj_otable_it_ops = {
1712         .do_attr_get    = osd_otable_it_attr_get,
1713         .do_index_try   = osd_index_try,
1714 };