lustre/osd-ldiskfs/osd_handler.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.gnu.org/licenses/gpl-2.0.html
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Use is subject to license terms.
  25  *
  26  * Copyright (c) 2011, 2017, Intel Corporation.
  27  */
  28 /*
  29  * This file is part of Lustre, http://www.lustre.org/
  30  *
  31  * lustre/osd/osd_handler.c
  32  *
  33  * Top-level entry points into osd module
  34  *
  35  * Author: Nikita Danilov <nikita@clusterfs.com>
  36  *         Pravin Shelar <pravin.shelar@sun.com> : Added fid in dirent
  37  */
  38
  39 #define DEBUG_SUBSYSTEM S_OSD
  40
  41 #include <linux/fs_struct.h>
  42 #include <linux/kallsyms.h>
  43 #include <linux/module.h>
  44 #include <linux/user_namespace.h>
  45 #include <linux/uidgid.h>
  46
  47 /* prerequisite for linux/xattr.h */
  48 #include <linux/types.h>
  49 /* prerequisite for linux/xattr.h */
  50 #include <linux/fs.h>
  51 /* XATTR_{REPLACE,CREATE} */
  52 #include <linux/xattr.h>
  53
  54 #include <ldiskfs/ldiskfs.h>
  55 #include <ldiskfs/xattr.h>
  56 #include <ldiskfs/ldiskfs_extents.h>
  57 #undef ENTRY
  58 /*
  59  * struct OBD_{ALLOC,FREE}*()
  60  * OBD_FAIL_CHECK
  61  */
  62 #include <obd_support.h>
  63 /* struct ptlrpc_thread */
  64 #include <lustre_net.h>
  65 #include <lustre_fid.h>
  66 /* process_config */
  67 #include <uapi/linux/lustre/lustre_param.h>
  68
  69 #include "osd_internal.h"
  70 #include "osd_dynlocks.h"
  71
  72 /* llo_* api support */
  73 #include <md_object.h>
  74 #include <lustre_quota.h>
  75
  76 #include <lustre_linkea.h>
  77
  78 /* encoding routines */
  79 #include <lustre_crypto.h>
  80
  81 /* Maximum EA size is limited by LNET_MTU for remote objects */
  82 #define OSD_MAX_EA_SIZE 1048364
  83
  84 int ldiskfs_pdo = 1;
  85 module_param(ldiskfs_pdo, int, 0644);
  86 MODULE_PARM_DESC(ldiskfs_pdo, "ldiskfs with parallel directory operations");
  87
  88 int ldiskfs_track_declares_assert;
  89 module_param(ldiskfs_track_declares_assert, int, 0644);
  90 MODULE_PARM_DESC(ldiskfs_track_declares_assert, "LBUG during tracking of declares");
  91
  92 /* Slab to allocate dynlocks */
  93 struct kmem_cache *dynlock_cachep;
  94
  95 /* Slab to allocate osd_it_ea */
  96 struct kmem_cache *osd_itea_cachep;
  97
  98 static struct lu_kmem_descr ldiskfs_caches[] = {
  99         {
 100                 .ckd_cache = &dynlock_cachep,
 101                 .ckd_name  = "dynlock_cache",
 102                 .ckd_size  = sizeof(struct dynlock_handle)
 103         },
 104         {
 105                 .ckd_cache = &osd_itea_cachep,
 106                 .ckd_name  = "osd_itea_cache",
 107                 .ckd_size  = sizeof(struct osd_it_ea)
 108         },
 109         {
 110                 .ckd_cache = NULL
 111         }
 112 };
 113
 114 static const char dot[] = ".";
 115 static const char dotdot[] = "..";
 116
 117 static const struct lu_object_operations      osd_lu_obj_ops;
 118 static const struct dt_object_operations      osd_obj_ops;
 119 static const struct dt_object_operations      osd_obj_otable_it_ops;
 120 static const struct dt_index_operations       osd_index_iam_ops;
 121 static const struct dt_index_operations       osd_index_ea_ops;
 122
 123 static int osd_remote_fid(const struct lu_env *env, struct osd_device *osd,
 124                           const struct lu_fid *fid);
 125 static int osd_process_scheduled_agent_removals(const struct lu_env *env,
 126                                                 struct osd_device *osd);
 127
 128 int osd_trans_declare_op2rb[] = {
 129         [OSD_OT_ATTR_SET]       = OSD_OT_ATTR_SET,
 130         [OSD_OT_PUNCH]          = OSD_OT_MAX,
 131         [OSD_OT_XATTR_SET]      = OSD_OT_XATTR_SET,
 132         [OSD_OT_CREATE]         = OSD_OT_DESTROY,
 133         [OSD_OT_DESTROY]        = OSD_OT_CREATE,
 134         [OSD_OT_REF_ADD]        = OSD_OT_REF_DEL,
 135         [OSD_OT_REF_DEL]        = OSD_OT_REF_ADD,
 136         [OSD_OT_WRITE]          = OSD_OT_WRITE,
 137         [OSD_OT_INSERT]         = OSD_OT_DELETE,
 138         [OSD_OT_DELETE]         = OSD_OT_INSERT,
 139         [OSD_OT_QUOTA]          = OSD_OT_MAX,
 140 };
 141
 142 static int osd_has_index(const struct osd_object *obj)
 143 {
 144         return obj->oo_dt.do_index_ops != NULL;
 145 }
 146
 147 static int osd_object_invariant(const struct lu_object *l)
 148 {
 149         return osd_invariant(osd_obj(l));
 150 }
 151
 152 /*
 153  * Concurrency: doesn't matter
 154  */
 155 static int osd_is_write_locked(const struct lu_env *env, struct osd_object *o)
 156 {
 157         struct osd_thread_info *oti = osd_oti_get(env);
 158
 159         return oti->oti_w_locks > 0 && o->oo_owner == env;
 160 }
 161
 162 /*
 163  * Concurrency: doesn't access mutable data
 164  */
 165 static int osd_root_get(const struct lu_env *env,
 166                         struct dt_device *dev, struct lu_fid *f)
 167 {
 168         lu_local_obj_fid(f, OSD_FS_ROOT_OID);
 169         return 0;
 170 }
 171
 172 /*
 173  * the following set of functions are used to maintain per-thread
 174  * cache of FID->ino mapping. this mechanism is needed to resolve
 175  * FID to inode at dt_insert() which in turn stores ino in the
 176  * directory entries to keep ldiskfs compatible with ext[34].
 177  * due to locking-originated restrictions we can't lookup ino
 178  * using LU cache (deadlock is possible). lookup using OI is quite
 179  * expensive. so instead we maintain this cache and methods like
 180  * dt_create() fill it. so in the majority of cases dt_insert() is
 181  * able to find needed mapping in lockless manner.
 182  */
 183 static struct osd_idmap_cache *
 184 osd_idc_find(const struct lu_env *env, struct osd_device *osd,
 185              const struct lu_fid *fid)
 186 {
 187         struct osd_thread_info *oti = osd_oti_get(env);
 188         struct osd_idmap_cache *idc = oti->oti_ins_cache;
 189         int i;
 190
 191         for (i = 0; i < oti->oti_ins_cache_used; i++) {
 192                 if (!lu_fid_eq(&idc[i].oic_fid, fid))
 193                         continue;
 194                 if (idc[i].oic_dev != osd)
 195                         continue;
 196
 197                 return idc + i;
 198         }
 199
 200         return NULL;
 201 }
 202
 203 static struct osd_idmap_cache *
 204 osd_idc_add(const struct lu_env *env, struct osd_device *osd,
 205             const struct lu_fid *fid)
 206 {
 207         struct osd_thread_info *oti   = osd_oti_get(env);
 208         struct osd_idmap_cache *idc;
 209         int i;
 210
 211         if (unlikely(oti->oti_ins_cache_used >= oti->oti_ins_cache_size)) {
 212                 i = oti->oti_ins_cache_size * 2;
 213                 if (i == 0)
 214                         i = OSD_INS_CACHE_SIZE;
 215                 OBD_ALLOC_PTR_ARRAY(idc, i);
 216                 if (idc == NULL)
 217                         return ERR_PTR(-ENOMEM);
 218                 if (oti->oti_ins_cache != NULL) {
 219                         memcpy(idc, oti->oti_ins_cache,
 220                                oti->oti_ins_cache_used * sizeof(*idc));
 221                         OBD_FREE_PTR_ARRAY(oti->oti_ins_cache,
 222                                            oti->oti_ins_cache_used);
 223                 }
 224                 oti->oti_ins_cache = idc;
 225                 oti->oti_ins_cache_size = i;
 226         }
 227
 228         idc = oti->oti_ins_cache + oti->oti_ins_cache_used++;
 229         idc->oic_fid = *fid;
 230         idc->oic_dev = osd;
 231         idc->oic_lid.oii_ino = 0;
 232         idc->oic_lid.oii_gen = 0;
 233         idc->oic_remote = 0;
 234
 235         return idc;
 236 }
 237
 238 /*
 239  * lookup mapping for the given fid in the cache, initialize a
 240  * new one if not found. the initialization checks whether the
 241  * object is local or remote. for local objects, OI is used to
 242  * learn ino/generation. the function is used when the caller
 243  * has no information about the object, e.g. at dt_insert().
 244  */
 245 static struct osd_idmap_cache *
 246 osd_idc_find_or_init(const struct lu_env *env, struct osd_device *osd,
 247                      const struct lu_fid *fid)
 248 {
 249         struct osd_idmap_cache *idc;
 250         int rc;
 251
 252         idc = osd_idc_find(env, osd, fid);
 253         LASSERT(!IS_ERR(idc));
 254         if (idc != NULL)
 255                 return idc;
 256
 257         CDEBUG(D_INODE, "%s: FID "DFID" not in the id map cache\n",
 258                osd->od_svname, PFID(fid));
 259
 260         /* new mapping is needed */
 261         idc = osd_idc_add(env, osd, fid);
 262         if (IS_ERR(idc)) {
 263                 CERROR("%s: FID "DFID" add id map cache failed: %ld\n",
 264                        osd->od_svname, PFID(fid), PTR_ERR(idc));
 265                 return idc;
 266         }
 267
 268         /* initialize it */
 269         rc = osd_remote_fid(env, osd, fid);
 270         if (unlikely(rc < 0))
 271                 return ERR_PTR(rc);
 272
 273         if (rc == 0) {
 274                 /* the object is local, lookup in OI */
 275                 /* XXX: probably cheaper to lookup in LU first? */
 276                 rc = osd_oi_lookup(osd_oti_get(env), osd, fid,
 277                                    &idc->oic_lid, 0);
 278                 if (unlikely(rc < 0)) {
 279                         CERROR("can't lookup: rc = %d\n", rc);
 280                         return ERR_PTR(rc);
 281                 }
 282         } else {
 283                 /* the object is remote */
 284                 idc->oic_remote = 1;
 285         }
 286
 287         return idc;
 288 }
 289
 290 static void osd_idc_dump_lma(const struct lu_env *env,
 291                                 struct osd_device *osd,
 292                                 unsigned long ino,
 293                                 bool check_in_oi)
 294 {
 295         struct osd_thread_info *info = osd_oti_get(env);
 296         struct lustre_ost_attrs *loa = &info->oti_ost_attrs;
 297         const struct lu_fid *fid;
 298         struct osd_inode_id lid;
 299         struct inode *inode;
 300         int rc;
 301
 302         inode = osd_ldiskfs_iget(osd_sb(osd), ino);
 303         if (IS_ERR(inode)) {
 304                 CERROR("%s: can't get inode %lu: rc = %d\n",
 305                        osd->od_svname, ino, (int)PTR_ERR(inode));
 306                 return;
 307         }
 308         if (is_bad_inode(inode)) {
 309                 CERROR("%s: bad inode %lu\n", osd->od_svname, ino);
 310                 goto put;
 311         }
 312         rc = osd_get_lma(info, inode, &info->oti_obj_dentry, loa);
 313         if (rc) {
 314                 CERROR("%s: can't get LMA for %lu: rc = %d\n",
 315                        osd->od_svname, ino, rc);
 316                 goto put;
 317         }
 318         fid = &loa->loa_lma.lma_self_fid;
 319         LCONSOLE(D_INFO, "%s: "DFID" in inode %lu/%u\n", osd->od_svname,
 320                       PFID(fid), ino, (unsigned)inode->i_generation);
 321         if (!check_in_oi)
 322                 goto put;
 323         rc = osd_oi_lookup(osd_oti_get(env), osd, fid, &lid, 0);
 324         if (rc) {
 325                 CERROR("%s: can't lookup "DFID": rc = %d\n",
 326                        osd->od_svname, PFID(fid), rc);
 327                 goto put;
 328         }
 329         LCONSOLE(D_INFO, "%s: "DFID" maps to %u/%u\n", osd->od_svname,
 330                       PFID(fid), lid.oii_ino, lid.oii_gen);
 331 put:
 332         iput(inode);
 333 }
 334
 335 static void osd_idc_dump_debug(const struct lu_env *env,
 336                                 struct osd_device *osd,
 337                                 const struct lu_fid *fid,
 338                                 unsigned long ino1,
 339                                 unsigned long ino2)
 340 {
 341         struct osd_inode_id lid;
 342
 343         int rc;
 344
 345         rc = osd_oi_lookup(osd_oti_get(env), osd, fid, &lid, 0);
 346         if (!rc) {
 347                 LCONSOLE(D_INFO, "%s: "DFID" maps to %u/%u\n",
 348                         osd->od_svname, PFID(fid), lid.oii_ino, lid.oii_gen);
 349                 osd_idc_dump_lma(env, osd, lid.oii_ino, false);
 350         } else {
 351                 CERROR("%s: can't lookup "DFID": rc = %d\n",
 352                        osd->od_svname, PFID(fid), rc);
 353         }
 354         if (ino1)
 355                 osd_idc_dump_lma(env, osd, ino1, true);
 356         if (ino2)
 357                 osd_idc_dump_lma(env, osd, ino2, true);
 358 }
 359
 360 /*
 361  * lookup mapping for given FID and fill it from the given object.
 362  * the object is lolcal by definition.
 363  */
 364 static int osd_idc_find_and_init(const struct lu_env *env,
 365                                  struct osd_device *osd,
 366                                  struct osd_object *obj)
 367 {
 368         const struct lu_fid *fid = lu_object_fid(&obj->oo_dt.do_lu);
 369         struct osd_idmap_cache *idc;
 370
 371         idc = osd_idc_find(env, osd, fid);
 372         LASSERT(!IS_ERR(idc));
 373         if (idc != NULL) {
 374                 if (obj->oo_inode == NULL)
 375                         return 0;
 376                 if (idc->oic_lid.oii_ino != obj->oo_inode->i_ino) {
 377                         if (idc->oic_lid.oii_ino) {
 378                                 osd_idc_dump_debug(env, osd, fid,
 379                                                    idc->oic_lid.oii_ino,
 380                                                    obj->oo_inode->i_ino);
 381                                 return -EINVAL;
 382                         }
 383                         idc->oic_lid.oii_ino = obj->oo_inode->i_ino;
 384                         idc->oic_lid.oii_gen = obj->oo_inode->i_generation;
 385                 }
 386                 return 0;
 387         }
 388
 389         CDEBUG(D_INODE, "%s: FID "DFID" not in the id map cache\n",
 390                osd->od_svname, PFID(fid));
 391
 392         /* new mapping is needed */
 393         idc = osd_idc_add(env, osd, fid);
 394         if (IS_ERR(idc)) {
 395                 CERROR("%s: FID "DFID" add id map cache failed: %ld\n",
 396                        osd->od_svname, PFID(fid), PTR_ERR(idc));
 397                 return PTR_ERR(idc);
 398         }
 399
 400         if (obj->oo_inode != NULL) {
 401                 idc->oic_lid.oii_ino = obj->oo_inode->i_ino;
 402                 idc->oic_lid.oii_gen = obj->oo_inode->i_generation;
 403         }
 404         return 0;
 405 }
 406
 407 /*
 408  * OSD object methods.
 409  */
 410
 411 /*
 412  * Concurrency: no concurrent access is possible that early in object
 413  * life-cycle.
 414  */
 415 static struct lu_object *osd_object_alloc(const struct lu_env *env,
 416                                           const struct lu_object_header *hdr,
 417                                           struct lu_device *d)
 418 {
 419         struct osd_object *mo;
 420
 421         OBD_ALLOC_PTR(mo);
 422         if (mo != NULL) {
 423                 struct lu_object *l;
 424                 struct lu_object_header *h;
 425                 struct osd_device *o = osd_dev(d);
 426
 427                 l = &mo->oo_dt.do_lu;
 428                 if (unlikely(o->od_in_init)) {
 429                         OBD_ALLOC_PTR(h);
 430                         if (!h) {
 431                                 OBD_FREE_PTR(mo);
 432                                 return NULL;
 433                         }
 434
 435                         lu_object_header_init(h);
 436                         lu_object_init(l, h, d);
 437                         lu_object_add_top(h, l);
 438                         mo->oo_header = h;
 439                 } else {
 440                         dt_object_init(&mo->oo_dt, NULL, d);
 441                         mo->oo_header = NULL;
 442                 }
 443
 444                 mo->oo_dt.do_ops = &osd_obj_ops;
 445                 l->lo_ops = &osd_lu_obj_ops;
 446                 init_rwsem(&mo->oo_sem);
 447                 init_rwsem(&mo->oo_ext_idx_sem);
 448                 spin_lock_init(&mo->oo_guard);
 449                 INIT_LIST_HEAD(&mo->oo_xattr_list);
 450                 return l;
 451         }
 452         return NULL;
 453 }
 454
 455 int osd_get_lma(struct osd_thread_info *info, struct inode *inode,
 456                 struct dentry *dentry, struct lustre_ost_attrs *loa)
 457 {
 458         int rc;
 459
 460         rc = __osd_xattr_get(inode, dentry, XATTR_NAME_LMA,
 461                              (void *)loa, sizeof(*loa));
 462         if (rc > 0) {
 463                 struct lustre_mdt_attrs *lma = &loa->loa_lma;
 464
 465                 if (rc < sizeof(*lma))
 466                         return -EINVAL;
 467
 468                 rc = 0;
 469                 lustre_loa_swab(loa, true);
 470                 /* Check LMA compatibility */
 471                 if (lma->lma_incompat & ~LMA_INCOMPAT_SUPP) {
 472                         rc = -EOPNOTSUPP;
 473                         CWARN("%s: unsupported incompat LMA feature(s) %#x for fid = "DFID", ino = %lu: rc = %d\n",
 474                               osd_ino2name(inode),
 475                               lma->lma_incompat & ~LMA_INCOMPAT_SUPP,
 476                               PFID(&lma->lma_self_fid), inode->i_ino, rc);
 477                 }
 478         } else if (rc == 0) {
 479                 rc = -ENODATA;
 480         }
 481
 482         return rc;
 483 }
 484
 485 /*
 486  * retrieve object from backend ext fs.
 487  **/
 488 struct inode *osd_iget(struct osd_thread_info *info, struct osd_device *dev,
 489                        struct osd_inode_id *id)
 490 {
 491         int rc;
 492         struct inode *inode = NULL;
 493
 494         /*
 495          * if we look for an inode withing a running
 496          * transaction, then we risk to deadlock
 497          * osd_dirent_check_repair() breaks this
 498          */
 499          /* LASSERT(current->journal_info == NULL); */
 500
 501         inode = osd_ldiskfs_iget(osd_sb(dev), id->oii_ino);
 502         if (IS_ERR(inode)) {
 503                 CDEBUG(D_INODE, "no inode: ino = %u, rc = %ld\n",
 504                        id->oii_ino, PTR_ERR(inode));
 505         } else if (id->oii_gen != OSD_OII_NOGEN &&
 506                    inode->i_generation != id->oii_gen) {
 507                 CDEBUG(D_INODE, "unmatched inode: ino = %u, oii_gen = %u, "
 508                        "i_generation = %u\n",
 509                        id->oii_ino, id->oii_gen, inode->i_generation);
 510                 iput(inode);
 511                 inode = ERR_PTR(-ESTALE);
 512         } else if (inode->i_nlink == 0) {
 513                 /*
 514                  * due to parallel readdir and unlink,
 515                  * we can have dead inode here.
 516                  */
 517                 CDEBUG(D_INODE, "stale inode: ino = %u\n", id->oii_ino);
 518                 iput(inode);
 519                 inode = ERR_PTR(-ESTALE);
 520         } else if (is_bad_inode(inode)) {
 521                 rc = -ENOENT;
 522                 CWARN("%s: bad inode: ino = %u: rc = %d\n",
 523                       osd_dev2name(dev), id->oii_ino, rc);
 524                 iput(inode);
 525                 inode = ERR_PTR(rc);
 526         } else if ((rc = osd_attach_jinode(inode))) {
 527                 iput(inode);
 528                 inode = ERR_PTR(rc);
 529         } else {
 530                 ldiskfs_clear_inode_state(inode, LDISKFS_STATE_LUSTRE_DESTROY);
 531                 if (id->oii_gen == OSD_OII_NOGEN)
 532                         osd_id_gen(id, inode->i_ino, inode->i_generation);
 533
 534                 /*
 535                  * Do not update file c/mtime in ldiskfs.
 536                  * NB: we don't have any lock to protect this because we don't
 537                  * have reference on osd_object now, but contention with
 538                  * another lookup + attr_set can't happen in the tiny window
 539                  * between if (...) and set S_NOCMTIME.
 540                  */
 541                 if (!(inode->i_flags & S_NOCMTIME))
 542                         inode->i_flags |= S_NOCMTIME;
 543         }
 544         return inode;
 545 }
 546
 547 int osd_ldiskfs_add_entry(struct osd_thread_info *info, struct osd_device *osd,
 548                           handle_t *handle, struct dentry *child,
 549                           struct inode *inode, struct htree_lock *hlock)
 550 {
 551         int rc, rc2;
 552
 553         rc = __ldiskfs_add_entry(handle, child, inode, hlock);
 554         if (rc == -ENOBUFS || rc == -ENOSPC) {
 555                 struct lustre_ost_attrs *loa = &info->oti_ost_attrs;
 556                 struct inode *parent = child->d_parent->d_inode;
 557                 struct lu_fid *fid = NULL;
 558                 char fidstr[FID_LEN + 1] = "unknown";
 559
 560                 rc2 = osd_get_lma(info, parent, child->d_parent, loa);
 561                 if (!rc2) {
 562                         fid = &loa->loa_lma.lma_self_fid;
 563                 } else if (rc2 == -ENODATA) {
 564                         if (unlikely(is_root_inode(parent))) {
 565                                 fid = &info->oti_fid3;
 566                                 lu_local_obj_fid(fid, OSD_FS_ROOT_OID);
 567                         } else if (!osd->od_is_ost && osd->od_index == 0) {
 568                                 fid = &info->oti_fid3;
 569                                 lu_igif_build(fid, parent->i_ino,
 570                                               parent->i_generation);
 571                         }
 572                 }
 573
 574                 if (fid != NULL)
 575                         snprintf(fidstr, sizeof(fidstr), DFID, PFID(fid));
 576
 577                 /* below message is checked in sanity.sh test_129 */
 578                 if (rc == -ENOSPC) {
 579                         CWARN("%s: directory (inode: %lu, FID: %s) has reached max size limit\n",
 580                               osd_name(osd), parent->i_ino, fidstr);
 581                 } else {
 582                         rc = 0; /* ignore such error now */
 583                         CWARN("%s: directory (inode: %lu, FID: %s) is approaching max size limit\n",
 584                               osd_name(osd), parent->i_ino, fidstr);
 585                 }
 586
 587         }
 588
 589         return rc;
 590 }
 591
 592
 593 struct inode *
 594 osd_iget_fid(struct osd_thread_info *info, struct osd_device *dev,
 595              struct osd_inode_id *id, struct lu_fid *fid)
 596 {
 597         struct lustre_ost_attrs *loa = &info->oti_ost_attrs;
 598         struct inode *inode;
 599         int rc;
 600
 601         inode = osd_iget(info, dev, id);
 602         if (IS_ERR(inode))
 603                 return inode;
 604
 605         rc = osd_get_lma(info, inode, &info->oti_obj_dentry, loa);
 606         if (!rc) {
 607                 *fid = loa->loa_lma.lma_self_fid;
 608         } else if (rc == -ENODATA) {
 609                 if (unlikely(is_root_inode(inode)))
 610                         lu_local_obj_fid(fid, OSD_FS_ROOT_OID);
 611                 else
 612                         lu_igif_build(fid, inode->i_ino, inode->i_generation);
 613         } else {
 614                 iput(inode);
 615                 inode = ERR_PTR(rc);
 616         }
 617         return inode;
 618 }
 619
 620 static struct inode *osd_iget_check(struct osd_thread_info *info,
 621                                     struct osd_device *dev,
 622                                     const struct lu_fid *fid,
 623                                     struct osd_inode_id *id,
 624                                     bool trusted)
 625 {
 626         struct inode *inode;
 627         int rc = 0;
 628
 629         ENTRY;
 630
 631         /*
 632          * The cached OI mapping is trustable. If we cannot locate the inode
 633          * via the cached OI mapping, then return the failure to the caller
 634          * directly without further OI checking.
 635          */
 636
 637 again:
 638         inode = osd_ldiskfs_iget(osd_sb(dev), id->oii_ino);
 639         if (IS_ERR(inode)) {
 640                 rc = PTR_ERR(inode);
 641                 if (!trusted && (rc == -ENOENT || rc == -ESTALE))
 642                         goto check_oi;
 643
 644                 CDEBUG(D_INODE, "no inode for FID: "DFID", ino = %u, rc = %d\n",
 645                        PFID(fid), id->oii_ino, rc);
 646                 GOTO(put, rc);
 647         }
 648
 649         if (is_bad_inode(inode)) {
 650                 rc = -ENOENT;
 651                 if (!trusted)
 652                         goto check_oi;
 653
 654                 CDEBUG(D_INODE, "bad inode for FID: "DFID", ino = %u\n",
 655                        PFID(fid), id->oii_ino);
 656                 GOTO(put, rc);
 657         }
 658
 659         if (id->oii_gen != OSD_OII_NOGEN &&
 660             inode->i_generation != id->oii_gen) {
 661                 rc = -ESTALE;
 662                 if (!trusted)
 663                         goto check_oi;
 664
 665                 CDEBUG(D_INODE, "unmatched inode for FID: "DFID", ino = %u, "
 666                        "oii_gen = %u, i_generation = %u\n", PFID(fid),
 667                        id->oii_ino, id->oii_gen, inode->i_generation);
 668                 GOTO(put, rc);
 669         }
 670
 671         if (inode->i_nlink == 0) {
 672                 rc = -ENOENT;
 673                 if (!trusted)
 674                         goto check_oi;
 675
 676                 CDEBUG(D_INODE, "stale inode for FID: "DFID", ino = %u\n",
 677                        PFID(fid), id->oii_ino);
 678                 GOTO(put, rc);
 679         }
 680
 681         ldiskfs_clear_inode_state(inode, LDISKFS_STATE_LUSTRE_DESTROY);
 682
 683 check_oi:
 684         if (rc != 0) {
 685                 __u32 saved_ino = id->oii_ino;
 686                 __u32 saved_gen = id->oii_gen;
 687
 688                 LASSERT(!trusted);
 689                 LASSERTF(rc == -ESTALE || rc == -ENOENT, "rc = %d\n", rc);
 690
 691                 rc = osd_oi_lookup(info, dev, fid, id, OI_CHECK_FLD);
 692                 /*
 693                  * XXX: There are four possible cases:
 694                  *      1. rc = 0.
 695                  *         Backup/restore caused the OI invalid.
 696                  *      2. rc = 0.
 697                  *         Someone unlinked the object but NOT removed
 698                  *         the OI mapping, such as mount target device
 699                  *         as ldiskfs, and modify something directly.
 700                  *      3. rc = -ENOENT.
 701                  *         Someone just removed the object between the
 702                  *         former oi_lookup and the iget. It is normal.
 703                  *      4. Other failure cases.
 704                  *
 705                  *      Generally, when the device is mounted, it will
 706                  *      auto check whether the system is restored from
 707                  *      file-level backup or not. We trust such detect
 708                  *      to distinguish the 1st case from the 2nd case:
 709                  *      if the OI files are consistent but may contain
 710                  *      stale OI mappings because of case 2, if iget()
 711                  *      returns -ENOENT or -ESTALE, then it should be
 712                  *      the case 2.
 713                  */
 714                 if (rc != 0)
 715                         /*
 716                          * If the OI mapping was in OI file before the
 717                          * osd_iget_check(), but now, it is disappear,
 718                          * then it must be removed by race. That is a
 719                          * normal race case.
 720                          */
 721                         GOTO(put, rc);
 722
 723                 /*
 724                  * It is the OI scrub updated the OI mapping by race.
 725                  * The new OI mapping must be valid.
 726                  */
 727                 if (saved_ino != id->oii_ino ||
 728                     (saved_gen != id->oii_gen && saved_gen != OSD_OII_NOGEN)) {
 729                         if (!IS_ERR(inode))
 730                                 iput(inode);
 731
 732                         trusted = true;
 733                         goto again;
 734                 }
 735
 736                 if (IS_ERR(inode)) {
 737                         if (dev->od_scrub.os_scrub.os_file.sf_flags &
 738                             SF_INCONSISTENT)
 739                                 /*
 740                                  * It still can be the case 2, but we cannot
 741                                  * distinguish it from the case 1. So return
 742                                  * -EREMCHG to block current operation until
 743                                  *  OI scrub rebuilt the OI mappings.
 744                                  */
 745                                 rc = -EREMCHG;
 746                         else
 747                                 rc = -ENOENT;
 748
 749                         GOTO(put, rc);
 750                 }
 751
 752                 if (inode->i_generation == id->oii_gen)
 753                         rc = -ENOENT;
 754                 else
 755                         rc = -EREMCHG;
 756         } else {
 757                 if (id->oii_gen == OSD_OII_NOGEN)
 758                         osd_id_gen(id, inode->i_ino, inode->i_generation);
 759
 760                 /*
 761                  * Do not update file c/mtime in ldiskfs.
 762                  * NB: we don't have any lock to protect this because we don't
 763                  * have reference on osd_object now, but contention with
 764                  * another lookup + attr_set can't happen in the tiny window
 765                  * between if (...) and set S_NOCMTIME.
 766                  */
 767                 if (!(inode->i_flags & S_NOCMTIME))
 768                         inode->i_flags |= S_NOCMTIME;
 769         }
 770
 771         GOTO(put, rc);
 772
 773 put:
 774         if (rc != 0) {
 775                 if (!IS_ERR(inode))
 776                         iput(inode);
 777
 778                 inode = ERR_PTR(rc);
 779         }
 780
 781         return inode;
 782 }
 783
 784 /**
 785  * \retval +v: new filter_fid does not contain self-fid
 786  * \retval 0:  filter_fid_18_23, contains self-fid
 787  * \retval -v: other failure cases
 788  */
 789 int osd_get_idif(struct osd_thread_info *info, struct inode *inode,
 790                  struct dentry *dentry, struct lu_fid *fid)
 791 {
 792         struct filter_fid *ff = &info->oti_ff;
 793         struct ost_id *ostid = &info->oti_ostid;
 794         int rc;
 795
 796         rc = __osd_xattr_get(inode, dentry, XATTR_NAME_FID, ff, sizeof(*ff));
 797         if (rc == sizeof(struct filter_fid_18_23)) {
 798                 struct filter_fid_18_23 *ff_old = (void *)ff;
 799
 800                 ostid_set_seq(ostid, le64_to_cpu(ff_old->ff_seq));
 801                 rc = ostid_set_id(ostid, le64_to_cpu(ff_old->ff_objid));
 802                 /*
 803                  * XXX: use 0 as the index for compatibility, the caller will
 804                  * handle index related issues when necessary.
 805                  */
 806                 if (!rc)
 807                         ostid_to_fid(fid, ostid, 0);
 808         } else if (rc >= (int)sizeof(struct filter_fid_24_29)) {
 809                 rc = 1;
 810         } else if (rc >= 0) {
 811                 rc = -EINVAL;
 812         }
 813
 814         return rc;
 815 }
 816
 817 static int osd_lma_self_repair(struct osd_thread_info *info,
 818                                struct osd_device *osd, struct inode *inode,
 819                                const struct lu_fid *fid, __u32 compat)
 820 {
 821         handle_t *jh;
 822         int rc;
 823
 824         LASSERT(current->journal_info == NULL);
 825
 826         jh = osd_journal_start_sb(osd_sb(osd), LDISKFS_HT_MISC,
 827                                   osd_dto_credits_noquota[DTO_XATTR_SET]);
 828         if (IS_ERR(jh)) {
 829                 rc = PTR_ERR(jh);
 830                 CWARN("%s: cannot start journal for lma_self_repair: rc = %d\n",
 831                       osd_name(osd), rc);
 832                 return rc;
 833         }
 834
 835         rc = osd_ea_fid_set(info, inode, fid, compat, 0);
 836         if (rc != 0)
 837                 CWARN("%s: cannot self repair the LMA: rc = %d\n",
 838                       osd_name(osd), rc);
 839         ldiskfs_journal_stop(jh);
 840         return rc;
 841 }
 842
 843 static int osd_check_lma(const struct lu_env *env, struct osd_object *obj)
 844 {
 845         struct osd_thread_info *info = osd_oti_get(env);
 846         struct osd_device *osd = osd_obj2dev(obj);
 847         struct lustre_ost_attrs *loa = &info->oti_ost_attrs;
 848         struct lustre_mdt_attrs *lma = &loa->loa_lma;
 849         struct inode *inode = obj->oo_inode;
 850         struct dentry *dentry = &info->oti_obj_dentry;
 851         struct lu_fid *fid = NULL;
 852         const struct lu_fid *rfid = lu_object_fid(&obj->oo_dt.do_lu);
 853         int rc;
 854
 855         ENTRY;
 856
 857         rc = __osd_xattr_get(inode, dentry, XATTR_NAME_LMA,
 858                              (void *)loa, sizeof(*loa));
 859         if (rc == -ENODATA && !fid_is_igif(rfid) && osd->od_check_ff) {
 860                 fid = &lma->lma_self_fid;
 861                 rc = osd_get_idif(info, inode, dentry, fid);
 862                 if (rc > 0 || (rc == -ENODATA && osd->od_index_in_idif)) {
 863                         /*
 864                          * For the given OST-object, if it has neither LMA nor
 865                          * FID in XATTR_NAME_FID, then the given FID (which is
 866                          * contained in the @obj, from client RPC for locating
 867                          * the OST-object) is trusted. We use it to generate
 868                          * the LMA.
 869                          */
 870                         osd_lma_self_repair(info, osd, inode, rfid,
 871                                             LMAC_FID_ON_OST);
 872                         RETURN(0);
 873                 }
 874         }
 875
 876         if (rc < 0)
 877                 RETURN(rc);
 878
 879         if (rc > 0) {
 880                 rc = 0;
 881                 lustre_lma_swab(lma);
 882                 if (unlikely((lma->lma_incompat & ~LMA_INCOMPAT_SUPP) ||
 883                              (CFS_FAIL_CHECK(OBD_FAIL_OSD_LMA_INCOMPAT) &&
 884                               S_ISREG(inode->i_mode)))) {
 885                         CWARN("%s: unsupported incompat LMA feature(s) %#x for "
 886                               "fid = "DFID", ino = %lu\n", osd_name(osd),
 887                               lma->lma_incompat & ~LMA_INCOMPAT_SUPP,
 888                               PFID(rfid), inode->i_ino);
 889                         rc = -EOPNOTSUPP;
 890                 } else {
 891                         fid = &lma->lma_self_fid;
 892                         if (lma->lma_compat & LMAC_STRIPE_INFO &&
 893                             osd->od_is_ost)
 894                                 obj->oo_pfid_in_lma = 1;
 895                         if (unlikely(lma->lma_incompat & LMAI_REMOTE_PARENT) &&
 896                             !osd->od_is_ost)
 897                                 lu_object_set_agent_entry(&obj->oo_dt.do_lu);
 898                 }
 899         }
 900
 901         if (fid != NULL && unlikely(!lu_fid_eq(rfid, fid))) {
 902                 if (fid_is_idif(rfid) && fid_is_idif(fid)) {
 903                         struct ost_id   *oi   = &info->oti_ostid;
 904                         struct lu_fid   *fid1 = &info->oti_fid3;
 905                         __u32            idx  = fid_idif_ost_idx(rfid);
 906
 907                         /*
 908                          * For old IDIF, the OST index is not part of the IDIF,
 909                          * Means that different OSTs may have the same IDIFs.
 910                          * Under such case, we need to make some compatible
 911                          * check to make sure to trigger OI scrub properly.
 912                          */
 913                         if (idx != 0 && fid_idif_ost_idx(fid) == 0) {
 914                                 /* Given @rfid is new, LMA is old. */
 915                                 fid_to_ostid(fid, oi);
 916                                 ostid_to_fid(fid1, oi, idx);
 917                                 if (lu_fid_eq(fid1, rfid)) {
 918                                         if (osd->od_index_in_idif)
 919                                                 osd_lma_self_repair(info, osd,
 920                                                         inode, rfid,
 921                                                         LMAC_FID_ON_OST);
 922                                         RETURN(0);
 923                                 }
 924                         }
 925                 }
 926
 927                 rc = -EREMCHG;
 928         }
 929
 930         RETURN(rc);
 931 }
 932
 933 struct osd_check_lmv_buf {
 934         /* please keep it as first member */
 935         struct dir_context ctx;
 936         struct osd_thread_info *oclb_info;
 937         struct osd_device *oclb_dev;
 938         int oclb_items;
 939         bool oclb_found;
 940 };
 941
 942 /**
 943  * It is called internally by ->iterate*() to filter out the
 944  * local slave object's FID of the striped directory.
 945  *
 946  * \retval      1 found the local slave's FID
 947  * \retval      0 continue to check next item
 948  * \retval      -ve for failure
 949  */
 950 #ifdef HAVE_FILLDIR_USE_CTX
 951 static int osd_stripe_dir_filldir(struct dir_context *buf,
 952 #else
 953 static int osd_stripe_dir_filldir(void *buf,
 954 #endif
 955                                   const char *name, int namelen,
 956                                   loff_t offset, __u64 ino, unsigned int d_type)
 957 {
 958         struct osd_check_lmv_buf *oclb = (struct osd_check_lmv_buf *)buf;
 959         struct osd_thread_info *oti = oclb->oclb_info;
 960         struct lu_fid *fid = &oti->oti_fid3;
 961         struct osd_inode_id *id = &oti->oti_id3;
 962         struct osd_device *dev = oclb->oclb_dev;
 963         struct inode *inode;
 964
 965         oclb->oclb_items++;
 966
 967         if (name[0] == '.')
 968                 return 0;
 969
 970         fid_zero(fid);
 971         sscanf(name + 1, SFID, RFID(fid));
 972         if (!fid_is_sane(fid))
 973                 return 0;
 974
 975         if (osd_remote_fid(oti->oti_env, dev, fid))
 976                 return 0;
 977
 978         osd_id_gen(id, ino, OSD_OII_NOGEN);
 979         inode = osd_iget(oti, dev, id);
 980         if (IS_ERR(inode))
 981                 return PTR_ERR(inode);
 982
 983         iput(inode);
 984         osd_add_oi_cache(oti, dev, id, fid);
 985         osd_oii_insert(dev, fid, id, true);
 986         oclb->oclb_found = true;
 987
 988         return 1;
 989 }
 990
 991 /*
 992  * When lookup item under striped directory, we need to locate the master
 993  * MDT-object of the striped directory firstly, then the client will send
 994  * lookup (getattr_by_name) RPC to the MDT with some slave MDT-object's FID
 995  * and the item's name. If the system is restored from MDT file level backup,
 996  * then before the OI scrub completely built the OI files, the OI mappings of
 997  * the master MDT-object and slave MDT-object may be invalid. Usually, it is
 998  * not a problem for the master MDT-object. Because when locate the master
 999  * MDT-object, we will do name based lookup (for the striped directory itself)
1000  * firstly, during such process we can setup the correct OI mapping for the
1001  * master MDT-object. But it will be trouble for the slave MDT-object. Because
1002  * the client will not trigger name based lookup on the MDT to locate the slave
1003  * MDT-object before locating item under the striped directory, then when
1004  * osd_fid_lookup(), it will find that the OI mapping for the slave MDT-object
1005  * is invalid and does not know what the right OI mapping is, then the MDT has
1006  * to return -EINPROGRESS to the client to notify that the OI scrub is rebuiding
1007  * the OI file, related OI mapping is unknown yet, please try again later. And
1008  * then client will re-try the RPC again and again until related OI mapping has
1009  * been updated. That is quite inefficient.
1010  *
1011  * To resolve above trouble, we will handle it as the following two cases:
1012  *
1013  * 1) The slave MDT-object and the master MDT-object are on different MDTs.
1014  *    It is relative easy. Be as one of remote MDT-objects, the slave MDT-object
1015  *    is linked under /REMOTE_PARENT_DIR with the name of its FID string.
1016  *    We can locate the slave MDT-object via lookup the /REMOTE_PARENT_DIR
1017  *    directly. Please check osd_fid_lookup().
1018  *
1019  * 2) The slave MDT-object and the master MDT-object reside on the same MDT.
1020  *    Under such case, during lookup the master MDT-object, we will lookup the
1021  *    slave MDT-object via readdir against the master MDT-object, because the
1022  *    slave MDT-objects information are stored as sub-directories with the name
1023  *    "${FID}:${index}". Then when find the local slave MDT-object, its OI
1024  *    mapping will be recorded. Then subsequent osd_fid_lookup() will know
1025  *    the correct OI mapping for the slave MDT-object.
1026  */
1027 static int osd_check_lmv(struct osd_thread_info *oti, struct osd_device *dev,
1028                          struct inode *inode)
1029 {
1030         struct lu_buf *buf = &oti->oti_big_buf;
1031         struct dentry *dentry = &oti->oti_obj_dentry;
1032         struct file *filp;
1033         struct lmv_mds_md_v1 *lmv1;
1034         struct osd_check_lmv_buf oclb = {
1035                 .ctx.actor = osd_stripe_dir_filldir,
1036                 .oclb_info = oti,
1037                 .oclb_dev = dev,
1038                 .oclb_found = false,
1039         };
1040         int rc = 0;
1041
1042         ENTRY;
1043
1044 again:
1045         rc = __osd_xattr_get(inode, dentry, XATTR_NAME_LMV, buf->lb_buf,
1046                              buf->lb_len);
1047         if (rc == -ERANGE) {
1048                 rc = __osd_xattr_get(inode, dentry, XATTR_NAME_LMV, NULL, 0);
1049                 if (rc > 0) {
1050                         lu_buf_realloc(buf, rc);
1051                         if (buf->lb_buf == NULL)
1052                                 GOTO(out, rc = -ENOMEM);
1053
1054                         goto again;
1055                 }
1056         }
1057
1058         if (unlikely(rc == 0 || rc == -ENODATA))
1059                 GOTO(out, rc = 0);
1060
1061         if (rc < 0)
1062                 GOTO(out, rc);
1063
1064         if (unlikely(buf->lb_buf == NULL)) {
1065                 lu_buf_realloc(buf, rc);
1066                 if (buf->lb_buf == NULL)
1067                         GOTO(out, rc = -ENOMEM);
1068
1069                 goto again;
1070         }
1071
1072         lmv1 = buf->lb_buf;
1073         if (le32_to_cpu(lmv1->lmv_magic) != LMV_MAGIC_V1)
1074                 GOTO(out, rc = 0);
1075
1076         filp = osd_quasi_file(oti->oti_env, inode);
1077         rc = osd_security_file_alloc(filp);
1078         if (rc)
1079                 goto out;
1080
1081         do {
1082                 oclb.oclb_items = 0;
1083                 rc = iterate_dir(filp, &oclb.ctx);
1084         } while (rc >= 0 && oclb.oclb_items > 0 && !oclb.oclb_found &&
1085                  filp->f_pos != LDISKFS_HTREE_EOF_64BIT);
1086         inode->i_fop->release(inode, filp);
1087
1088 out:
1089         if (rc < 0)
1090                 CDEBUG(D_LFSCK,
1091                        "%s: cannot check LMV, ino = %lu/%u: rc = %d\n",
1092                        osd_ino2name(inode), inode->i_ino, inode->i_generation,
1093                        rc);
1094         else
1095                 rc = 0;
1096
1097         RETURN(rc);
1098 }
1099
1100 static int osd_fid_lookup(const struct lu_env *env, struct osd_object *obj,
1101                           const struct lu_fid *fid,
1102                           const struct lu_object_conf *conf)
1103 {
1104         struct osd_thread_info *info;
1105         struct lu_device *ldev = obj->oo_dt.do_lu.lo_dev;
1106         struct osd_device *dev;
1107         struct osd_idmap_cache *oic;
1108         struct osd_inode_id *id;
1109         struct inode *inode = NULL;
1110         struct lustre_scrub *scrub;
1111         struct scrub_file *sf;
1112         __u32 flags = SS_CLEAR_DRYRUN | SS_CLEAR_FAILOUT | SS_AUTO_FULL;
1113         __u32 saved_ino;
1114         __u32 saved_gen;
1115         int result = 0;
1116         int rc1 = 0;
1117         bool remote = false;
1118         bool trusted = true;
1119         bool updated = false;
1120         bool checked = false;
1121
1122         ENTRY;
1123
1124         LINVRNT(osd_invariant(obj));
1125         LASSERT(obj->oo_inode == NULL);
1126
1127         if (fid_is_sane(fid) == 0) {
1128                 CERROR("%s: invalid FID "DFID"\n", ldev->ld_obd->obd_name,
1129                        PFID(fid));
1130                 dump_stack();
1131                 RETURN(-EINVAL);
1132         }
1133
1134         dev = osd_dev(ldev);
1135         scrub = &dev->od_scrub.os_scrub;
1136         sf = &scrub->os_file;
1137         info = osd_oti_get(env);
1138         LASSERT(info);
1139         oic = &info->oti_cache;
1140
1141         if (OBD_FAIL_CHECK(OBD_FAIL_SRV_ENOENT))
1142                 RETURN(-ENOENT);
1143
1144         /*
1145          * For the object is created as locking anchor, or for the object to
1146          * be created on disk. No need to osd_oi_lookup() at here because FID
1147          * shouldn't never be re-used, if it's really a duplicate FID from
1148          * unexpected reason, we should be able to detect it later by calling
1149          * do_create->osd_oi_insert().
1150          */
1151         if (conf && conf->loc_flags & LOC_F_NEW)
1152                 GOTO(out, result = 0);
1153
1154         /* Search order: 1. per-thread cache. */
1155         if (lu_fid_eq(fid, &oic->oic_fid) && likely(oic->oic_dev == dev)) {
1156                 id = &oic->oic_lid;
1157                 goto iget;
1158         }
1159
1160         id = &info->oti_id;
1161         memset(id, 0, sizeof(struct osd_inode_id));
1162         if (!list_empty(&scrub->os_inconsistent_items)) {
1163                 /* Search order: 2. OI scrub pending list. */
1164                 result = osd_oii_lookup(dev, fid, id);
1165                 if (!result)
1166                         goto iget;
1167         }
1168
1169         /*
1170          * The OI mapping in the OI file can be updated by the OI scrub
1171          * when we locate the inode via FID. So it may be not trustable.
1172          */
1173         trusted = false;
1174
1175         /* Search order: 3. OI files. */
1176         result = osd_oi_lookup(info, dev, fid, id, OI_CHECK_FLD);
1177         if (result == -ENOENT) {
1178                 if (!(fid_is_norm(fid) || fid_is_igif(fid)) ||
1179                     fid_is_on_ost(info, dev, fid, OI_CHECK_FLD) ||
1180                     !ldiskfs_test_bit(osd_oi_fid2idx(dev, fid),
1181                                       sf->sf_oi_bitmap))
1182                         GOTO(out, result = 0);
1183
1184                 goto trigger;
1185         }
1186
1187         /* -ESTALE is returned if inode of OST object doesn't exist */
1188         if (result == -ESTALE &&
1189             fid_is_on_ost(info, dev, fid, OI_CHECK_FLD)) {
1190                 GOTO(out, result = 0);
1191         }
1192
1193         if (result)
1194                 GOTO(out, result);
1195
1196 iget:
1197         obj->oo_inode = NULL;
1198         /* for later passes through checks, not true on first pass */
1199         if (!IS_ERR_OR_NULL(inode))
1200                 iput(inode);
1201
1202         inode = osd_iget_check(info, dev, fid, id, trusted);
1203         if (!IS_ERR(inode)) {
1204                 obj->oo_inode = inode;
1205                 result = 0;
1206                 if (remote)
1207                         goto trigger;
1208
1209                 goto check_lma;
1210         }
1211
1212         result = PTR_ERR(inode);
1213         if (result == -ENOENT || result == -ESTALE)
1214                 GOTO(out, result = 0);
1215
1216         if (result != -EREMCHG)
1217                 GOTO(out, result);
1218
1219 trigger:
1220         /*
1221          * We still have chance to get the valid inode: for the
1222          * object which is referenced by remote name entry, the
1223          * object on the local MDT will be linked under the dir
1224          * of "/REMOTE_PARENT_DIR" with its FID string as name.
1225          *
1226          * We do not know whether the object for the given FID
1227          * is referenced by some remote name entry or not, and
1228          * especially for DNE II, a multiple-linked object may
1229          * have many name entries reside on many MDTs.
1230          *
1231          * To simplify the operation, OSD will not distinguish
1232          * more, just lookup "/REMOTE_PARENT_DIR". Usually, it
1233          * only happened for the RPC from other MDT during the
1234          * OI scrub, or for the client side RPC with FID only,
1235          * such as FID to path, or from old connected client.
1236          */
1237         if (!remote) {
1238                 rc1 = osd_lookup_in_remote_parent(info, dev, fid, id);
1239                 if (!rc1) {
1240                         remote = true;
1241                         trusted = true;
1242                         flags |= SS_AUTO_PARTIAL;
1243                         flags &= ~SS_AUTO_FULL;
1244                         goto iget;
1245                 }
1246         }
1247
1248         if (scrub->os_running) {
1249                 if (scrub->os_partial_scan && !scrub->os_in_join)
1250                         goto join;
1251
1252                 if (IS_ERR_OR_NULL(inode) || result) {
1253                         osd_oii_insert(dev, fid, id, result == -ENOENT);
1254                         GOTO(out, result = -EINPROGRESS);
1255                 }
1256
1257                 LASSERT(remote);
1258                 LASSERT(obj->oo_inode == inode);
1259
1260                 osd_oii_insert(dev, fid, id, true);
1261                 goto found;
1262         }
1263
1264         if (dev->od_scrub.os_scrub.os_auto_scrub_interval == AS_NEVER) {
1265                 if (!remote)
1266                         GOTO(out, result = -EREMCHG);
1267
1268                 LASSERT(!result);
1269                 LASSERT(obj->oo_inode == inode);
1270
1271                 osd_add_oi_cache(info, dev, id, fid);
1272                 goto found;
1273         }
1274
1275 join:
1276         rc1 = osd_scrub_start(env, dev, flags);
1277         CDEBUG_LIMIT(D_LFSCK | D_CONSOLE | D_WARNING,
1278                      "%s: trigger OI scrub by RPC for "DFID"/%u with flags %#x: rc = %d\n",
1279                      osd_name(dev), PFID(fid), id->oii_ino, flags, rc1);
1280         if (rc1 && rc1 != -EALREADY)
1281                 GOTO(out, result = -EREMCHG);
1282
1283         if (IS_ERR_OR_NULL(inode) || result) {
1284                 osd_oii_insert(dev, fid, id, result == -ENOENT);
1285                 GOTO(out, result = -EINPROGRESS);
1286         }
1287
1288         LASSERT(remote);
1289         LASSERT(obj->oo_inode == inode);
1290
1291         osd_oii_insert(dev, fid, id, true);
1292         goto found;
1293
1294 check_lma:
1295         checked = true;
1296         if (unlikely(obj->oo_header))
1297                 goto found;
1298
1299         result = osd_check_lma(env, obj);
1300         if (!result)
1301                 goto found;
1302
1303         LASSERTF(id->oii_ino == inode->i_ino &&
1304                  id->oii_gen == inode->i_generation,
1305                  "locate wrong inode for FID: "DFID", %u/%u => %ld/%u\n",
1306                  PFID(fid), id->oii_ino, id->oii_gen,
1307                  inode->i_ino, inode->i_generation);
1308
1309         saved_ino = inode->i_ino;
1310         saved_gen = inode->i_generation;
1311
1312         if (unlikely(result == -ENODATA)) {
1313                 /*
1314                  * If the OI scrub updated the OI mapping by race, it
1315                  * must be valid. Trust the inode that has no LMA EA.
1316                  */
1317                 if (updated)
1318                         goto found;
1319
1320                 result = osd_oi_lookup(info, dev, fid, id, OI_CHECK_FLD);
1321                 if (!result) {
1322                         /*
1323                          * The OI mapping is still there, the inode is still
1324                          * valid. It is just becaues the inode has no LMA EA.
1325                          */
1326                         if (saved_ino == id->oii_ino &&
1327                             saved_gen == id->oii_gen)
1328                                 goto found;
1329
1330                         /*
1331                          * It is the OI scrub updated the OI mapping by race.
1332                          * The new OI mapping must be valid.
1333                          */
1334                         trusted = true;
1335                         updated = true;
1336                         goto iget;
1337                 }
1338
1339                 /*
1340                  * "result == -ENOENT" means that the OI mappinghas been
1341                  * removed by race, so the inode belongs to other object.
1342                  *
1343                  * Others error can be returned  directly.
1344                  */
1345                 if (result == -ENOENT) {
1346                         LASSERT(trusted);
1347
1348                         obj->oo_inode = NULL;
1349                         result = 0;
1350                 }
1351         }
1352
1353         if (result != -EREMCHG)
1354                 GOTO(out, result);
1355
1356         LASSERT(!updated);
1357
1358         /*
1359          * if two OST objects map to the same inode, and inode mode is
1360          * (S_IFREG | S_ISUID | S_ISGID | S_ISVTX | 0666), which means it's
1361          * reserved by precreate, and not written yet, in this case, don't
1362          * set inode for the object whose FID mismatch, so that it can create
1363          * inode and not block precreate.
1364          */
1365         if (fid_is_on_ost(info, dev, fid, OI_CHECK_FLD) &&
1366             inode->i_mode == (S_IFREG | S_ISUID | S_ISGID | S_ISVTX | 0666)) {
1367                 obj->oo_inode = NULL;
1368                 GOTO(out, result = 0);
1369         }
1370
1371         result = osd_oi_lookup(info, dev, fid, id, OI_CHECK_FLD);
1372         /*
1373          * "result == -ENOENT" means the cached OI mapping has been removed
1374          * from the OI file by race, above inode belongs to other object.
1375          */
1376         if (result == -ENOENT) {
1377                 LASSERT(trusted);
1378
1379                 obj->oo_inode = NULL;
1380                 GOTO(out, result = 0);
1381         }
1382
1383         if (result)
1384                 GOTO(out, result);
1385
1386         if (saved_ino == id->oii_ino && saved_gen == id->oii_gen) {
1387                 result = -EREMCHG;
1388                 osd_scrub_refresh_mapping(info, dev, fid, id, DTO_INDEX_DELETE,
1389                                           true, 0, NULL);
1390                 goto trigger;
1391         }
1392
1393         /*
1394          * It is the OI scrub updated the OI mapping by race.
1395          * The new OI mapping must be valid.
1396          */
1397         trusted = true;
1398         updated = true;
1399         goto iget;
1400
1401 found:
1402         if (!checked) {
1403                 struct lustre_ost_attrs *loa = &info->oti_ost_attrs;
1404                 struct lustre_mdt_attrs *lma = &info->oti_ost_attrs.loa_lma;
1405
1406                 result = osd_get_lma(info, inode, &info->oti_obj_dentry, loa);
1407                 if (!result) {
1408                         if (lma->lma_compat & LMAC_STRIPE_INFO &&
1409                             dev->od_is_ost)
1410                                 obj->oo_pfid_in_lma = 1;
1411                         if (unlikely(lma->lma_incompat & LMAI_REMOTE_PARENT) &&
1412                             !dev->od_is_ost)
1413                                 lu_object_set_agent_entry(&obj->oo_dt.do_lu);
1414                 } else if (result != -ENODATA) {
1415                         GOTO(out, result);
1416                 }
1417         }
1418
1419         obj->oo_compat_dot_created = 1;
1420         obj->oo_compat_dotdot_created = 1;
1421
1422         if (S_ISDIR(inode->i_mode) &&
1423             (flags & SS_AUTO_PARTIAL || sf->sf_status == SS_SCANNING))
1424                 osd_check_lmv(info, dev, inode);
1425
1426         result = osd_attach_jinode(inode);
1427         if (result)
1428                 GOTO(out, result);
1429
1430         if (!ldiskfs_pdo)
1431                 GOTO(out, result = 0);
1432
1433         LASSERT(!obj->oo_hl_head);
1434         obj->oo_hl_head = ldiskfs_htree_lock_head_alloc(HTREE_HBITS_DEF);
1435
1436         GOTO(out, result = (!obj->oo_hl_head ? -ENOMEM : 0));
1437
1438 out:
1439         if (result || !obj->oo_inode) {
1440                 if (!IS_ERR_OR_NULL(inode))
1441                         iput(inode);
1442
1443                 obj->oo_inode = NULL;
1444                 if (trusted)
1445                         fid_zero(&oic->oic_fid);
1446         }
1447
1448         LINVRNT(osd_invariant(obj));
1449         return result;
1450 }
1451
1452 /*
1453  * Concurrency: shouldn't matter.
1454  */
1455 static void osd_object_init0(struct osd_object *obj)
1456 {
1457         LASSERT(obj->oo_inode != NULL);
1458         obj->oo_dt.do_body_ops = &osd_body_ops;
1459         obj->oo_dt.do_lu.lo_header->loh_attr |=
1460                 (LOHA_EXISTS | (obj->oo_inode->i_mode & S_IFMT));
1461 }
1462
1463 /*
1464  * Concurrency: no concurrent access is possible that early in object
1465  * life-cycle.
1466  */
1467 static int osd_object_init(const struct lu_env *env, struct lu_object *l,
1468                            const struct lu_object_conf *conf)
1469 {
1470         struct osd_object *obj = osd_obj(l);
1471         int result;
1472
1473         LINVRNT(osd_invariant(obj));
1474
1475         if (OBD_FAIL_PRECHECK(OBD_FAIL_MDS_LLOG_UMOUNT_RACE) &&
1476             cfs_fail_val == 2) {
1477                 struct osd_thread_info *info = osd_oti_get(env);
1478                 struct osd_idmap_cache *oic = &info->oti_cache;
1479                 /* invalidate thread cache */
1480                 memset(&oic->oic_fid, 0, sizeof(oic->oic_fid));
1481         }
1482         if (fid_is_otable_it(&l->lo_header->loh_fid)) {
1483                 obj->oo_dt.do_ops = &osd_obj_otable_it_ops;
1484                 l->lo_header->loh_attr |= LOHA_EXISTS;
1485                 return 0;
1486         }
1487
1488         result = osd_fid_lookup(env, obj, lu_object_fid(l), conf);
1489         obj->oo_dt.do_body_ops = &osd_body_ops_new;
1490         if (result == 0 && obj->oo_inode != NULL) {
1491                 struct osd_thread_info *oti = osd_oti_get(env);
1492                 struct lustre_ost_attrs *loa = &oti->oti_ost_attrs;
1493
1494                 osd_object_init0(obj);
1495                 if (unlikely(obj->oo_header))
1496                         return 0;
1497
1498                 result = osd_get_lma(oti, obj->oo_inode,
1499                                      &oti->oti_obj_dentry, loa);
1500                 if (!result) {
1501                         /*
1502                          * Convert LMAI flags to lustre LMA flags
1503                          * and cache it to oo_lma_flags
1504                          */
1505                         obj->oo_lma_flags =
1506                                 lma_to_lustre_flags(loa->loa_lma.lma_incompat);
1507                 } else if (result == -ENODATA) {
1508                         result = 0;
1509                 }
1510         }
1511         obj->oo_dirent_count = LU_DIRENT_COUNT_UNSET;
1512
1513         LINVRNT(osd_invariant(obj));
1514         return result;
1515 }
1516
1517 /*
1518  * The first part of oxe_buf is xattr name, and is '\0' terminated.
1519  * The left part is for value, binary mode.
1520  */
1521 struct osd_xattr_entry {
1522         struct list_head        oxe_list;
1523         size_t                  oxe_len;
1524         size_t                  oxe_namelen;
1525         bool                    oxe_exist;
1526         struct rcu_head         oxe_rcu;
1527         char                    oxe_buf[0];
1528 };
1529
1530 static int osd_oxc_get(struct osd_object *obj, const char *name,
1531                        struct lu_buf *buf)
1532 {
1533         struct osd_xattr_entry *tmp;
1534         struct osd_xattr_entry *oxe = NULL;
1535         size_t namelen = strlen(name);
1536         int rc;
1537
1538         rcu_read_lock();
1539         list_for_each_entry_rcu(tmp, &obj->oo_xattr_list, oxe_list) {
1540                 if (namelen == tmp->oxe_namelen &&
1541                     strncmp(name, tmp->oxe_buf, namelen) == 0) {
1542                         oxe = tmp;
1543                         break;
1544                 }
1545         }
1546
1547         if (oxe == NULL)
1548                 GOTO(out, rc = -ENOENT);
1549
1550         if (!oxe->oxe_exist)
1551                 GOTO(out, rc = -ENODATA);
1552
1553         /* vallen */
1554         rc = oxe->oxe_len - sizeof(*oxe) - oxe->oxe_namelen - 1;
1555         LASSERT(rc > 0);
1556
1557         if (buf->lb_buf == NULL)
1558                 GOTO(out, rc);
1559
1560         if (buf->lb_len < rc)
1561                 GOTO(out, rc = -ERANGE);
1562
1563         memcpy(buf->lb_buf, &oxe->oxe_buf[namelen + 1], rc);
1564 out:
1565         rcu_read_unlock();
1566
1567         return rc;
1568 }
1569
1570 static void osd_oxc_free(struct rcu_head *head)
1571 {
1572         struct osd_xattr_entry *oxe;
1573
1574         oxe = container_of(head, struct osd_xattr_entry, oxe_rcu);
1575         OBD_FREE(oxe, oxe->oxe_len);
1576 }
1577
1578 static void osd_oxc_add(struct osd_object *obj, const char *name,
1579                         const char *buf, int buflen)
1580 {
1581         struct osd_xattr_entry *oxe;
1582         struct osd_xattr_entry *old = NULL;
1583         struct osd_xattr_entry *tmp;
1584         size_t namelen = strlen(name);
1585         size_t len = sizeof(*oxe) + namelen + 1 + buflen;
1586
1587         OBD_ALLOC(oxe, len);
1588         if (oxe == NULL)
1589                 return;
1590
1591         INIT_LIST_HEAD(&oxe->oxe_list);
1592         oxe->oxe_len = len;
1593         oxe->oxe_namelen = namelen;
1594         memcpy(oxe->oxe_buf, name, namelen);
1595         if (buflen > 0) {
1596                 LASSERT(buf != NULL);
1597                 memcpy(oxe->oxe_buf + namelen + 1, buf, buflen);
1598                 oxe->oxe_exist = true;
1599         } else {
1600                 oxe->oxe_exist = false;
1601         }
1602
1603         /* this should be rarely called, just remove old and add new */
1604         spin_lock(&obj->oo_guard);
1605         list_for_each_entry(tmp, &obj->oo_xattr_list, oxe_list) {
1606                 if (namelen == tmp->oxe_namelen &&
1607                     strncmp(name, tmp->oxe_buf, namelen) == 0) {
1608                         old = tmp;
1609                         break;
1610                 }
1611         }
1612         if (old != NULL) {
1613                 list_replace_rcu(&old->oxe_list, &oxe->oxe_list);
1614                 call_rcu(&old->oxe_rcu, osd_oxc_free);
1615         } else {
1616                 list_add_tail_rcu(&oxe->oxe_list, &obj->oo_xattr_list);
1617         }
1618         spin_unlock(&obj->oo_guard);
1619 }
1620
1621 static void osd_oxc_del(struct osd_object *obj, const char *name)
1622 {
1623         struct osd_xattr_entry *oxe;
1624         size_t namelen = strlen(name);
1625
1626         spin_lock(&obj->oo_guard);
1627         list_for_each_entry(oxe, &obj->oo_xattr_list, oxe_list) {
1628                 if (namelen == oxe->oxe_namelen &&
1629                     strncmp(name, oxe->oxe_buf, namelen) == 0) {
1630                         list_del_rcu(&oxe->oxe_list);
1631                         call_rcu(&oxe->oxe_rcu, osd_oxc_free);
1632                         break;
1633                 }
1634         }
1635         spin_unlock(&obj->oo_guard);
1636 }
1637
1638 static void osd_oxc_fini(struct osd_object *obj)
1639 {
1640         struct osd_xattr_entry *oxe, *next;
1641
1642         list_for_each_entry_safe(oxe, next, &obj->oo_xattr_list, oxe_list) {
1643                 list_del(&oxe->oxe_list);
1644                 OBD_FREE(oxe, oxe->oxe_len);
1645         }
1646 }
1647
1648 /*
1649  * Concurrency: no concurrent access is possible that late in object
1650  * life-cycle.
1651  */
1652 static void osd_object_free(const struct lu_env *env, struct lu_object *l)
1653 {
1654         struct osd_object *obj = osd_obj(l);
1655         struct lu_object_header *h = obj->oo_header;
1656
1657         LINVRNT(osd_invariant(obj));
1658
1659         osd_oxc_fini(obj);
1660         dt_object_fini(&obj->oo_dt);
1661         if (obj->oo_hl_head != NULL)
1662                 ldiskfs_htree_lock_head_free(obj->oo_hl_head);
1663         /* obj doesn't contain an lu_object_header, so we don't need call_rcu */
1664         OBD_FREE_PTR(obj);
1665         if (unlikely(h))
1666                 lu_object_header_free(h);
1667 }
1668
1669 /*
1670  * Concurrency: no concurrent access is possible that late in object
1671  * life-cycle.
1672  */
1673 static void osd_index_fini(struct osd_object *o)
1674 {
1675         struct iam_container *bag;
1676
1677         if (o->oo_dir != NULL) {
1678                 bag = &o->oo_dir->od_container;
1679                 if (o->oo_inode != NULL) {
1680                         if (bag->ic_object == o->oo_inode)
1681                                 iam_container_fini(bag);
1682                 }
1683                 OBD_FREE_PTR(o->oo_dir);
1684                 o->oo_dir = NULL;
1685         }
1686 }
1687
1688 enum {
1689         OSD_TXN_OI_DELETE_CREDITS    = 20,
1690         OSD_TXN_INODE_DELETE_CREDITS = 20
1691 };
1692
1693 /*
1694  * Journal
1695  */
1696
1697 #if OSD_THANDLE_STATS
1698 /**
1699  * Set time when the handle is allocated
1700  */
1701 static void osd_th_alloced(struct osd_thandle *oth)
1702 {
1703         oth->oth_alloced = ktime_get();
1704 }
1705
1706 /**
1707  * Set time when the handle started
1708  */
1709 static void osd_th_started(struct osd_thandle *oth)
1710 {
1711         oth->oth_started = ktime_get();
1712 }
1713
1714 /**
1715  * Check whether the we deal with this handle for too long.
1716  */
1717 static void __osd_th_check_slow(void *oth, struct osd_device *dev,
1718                                 ktime_t alloced, ktime_t started,
1719                                 ktime_t closed)
1720 {
1721         ktime_t now = ktime_get();
1722
1723         LASSERT(dev != NULL);
1724
1725         lprocfs_counter_add(dev->od_stats, LPROC_OSD_THANDLE_STARTING,
1726                             ktime_us_delta(started, alloced));
1727         lprocfs_counter_add(dev->od_stats, LPROC_OSD_THANDLE_OPEN,
1728                             ktime_us_delta(closed, started));
1729         lprocfs_counter_add(dev->od_stats, LPROC_OSD_THANDLE_CLOSING,
1730                             ktime_us_delta(now, closed));
1731
1732         if (ktime_before(ktime_add_ns(alloced, 30 * NSEC_PER_SEC), now)) {
1733                 CWARN("transaction handle %p was open for too long: now %lld, alloced %lld, started %lld, closed %lld\n",
1734                                 oth, now, alloced, started, closed);
1735                 libcfs_debug_dumpstack(NULL);
1736         }
1737 }
1738
1739 #define OSD_CHECK_SLOW_TH(oth, dev, expr)                               \
1740 {                                                                       \
1741         ktime_t __closed = ktime_get();                                 \
1742         ktime_t __alloced = oth->oth_alloced;                           \
1743         ktime_t __started = oth->oth_started;                           \
1744                                                                         \
1745         expr;                                                           \
1746         __osd_th_check_slow(oth, dev, __alloced, __started, __closed);  \
1747 }
1748
1749 #else /* OSD_THANDLE_STATS */
1750
1751 #define osd_th_alloced(h)                  do {} while(0)
1752 #define osd_th_started(h)                  do {} while(0)
1753 #define OSD_CHECK_SLOW_TH(oth, dev, expr)  expr
1754
1755 #endif /* OSD_THANDLE_STATS */
1756
1757 /*
1758  * Concurrency: doesn't access mutable data.
1759  */
1760 static int osd_param_is_not_sane(const struct osd_device *dev,
1761                                  const struct thandle *th)
1762 {
1763         struct osd_thandle *oh = container_of(th, typeof(*oh), ot_super);
1764
1765         return oh->ot_credits > osd_transaction_size(dev);
1766 }
1767
1768 /*
1769  * Concurrency: shouldn't matter.
1770  */
1771 static void osd_trans_commit_cb(struct super_block *sb,
1772                                 struct ldiskfs_journal_cb_entry *jcb, int error)
1773 {
1774         struct osd_thandle *oh = container_of(jcb, struct osd_thandle, ot_jcb);
1775         struct thandle *th = &oh->ot_super;
1776         struct lu_device *lud = &th->th_dev->dd_lu_dev;
1777         struct osd_device *osd = osd_dev(lud);
1778         struct dt_txn_commit_cb *dcb, *tmp;
1779
1780         LASSERT(oh->ot_handle == NULL);
1781
1782         if (error)
1783                 CERROR("transaction @0x%p commit error: %d\n", th, error);
1784
1785         OBD_FAIL_TIMEOUT(OBD_FAIL_OST_DELAY_TRANS, 40);
1786         /* call per-transaction callbacks if any */
1787         list_for_each_entry_safe(dcb, tmp, &oh->ot_commit_dcb_list,
1788                                  dcb_linkage) {
1789                 LASSERTF(dcb->dcb_magic == TRANS_COMMIT_CB_MAGIC,
1790                          "commit callback entry: magic=%x name='%s'\n",
1791                          dcb->dcb_magic, dcb->dcb_name);
1792                 list_del_init(&dcb->dcb_linkage);
1793                 dcb->dcb_func(NULL, th, dcb, error);
1794         }
1795
1796         lu_ref_del_at(&lud->ld_reference, &oh->ot_dev_link, "osd-tx", th);
1797         if (atomic_dec_and_test(&osd->od_commit_cb_in_flight))
1798                 wake_up(&osd->od_commit_cb_done);
1799         th->th_dev = NULL;
1800
1801         OBD_FREE_PTR(oh);
1802 }
1803
1804 static struct thandle *osd_trans_create(const struct lu_env *env,
1805                                         struct dt_device *d)
1806 {
1807         struct osd_thread_info *oti = osd_oti_get(env);
1808         struct osd_iobuf *iobuf = &oti->oti_iobuf;
1809         struct osd_thandle *oh;
1810         struct thandle *th;
1811
1812         ENTRY;
1813
1814         if (d->dd_rdonly) {
1815                 CERROR("%s: someone try to start transaction under "
1816                        "readonly mode, should be disabled.\n",
1817                        osd_name(osd_dt_dev(d)));
1818                 dump_stack();
1819                 RETURN(ERR_PTR(-EROFS));
1820         }
1821
1822         /* on pending IO in this thread should left from prev. request */
1823         LASSERT(atomic_read(&iobuf->dr_numreqs) == 0);
1824
1825         sb_start_write(osd_sb(osd_dt_dev(d)));
1826
1827         OBD_ALLOC_GFP(oh, sizeof(*oh), GFP_NOFS);
1828         if (!oh) {
1829                 sb_end_write(osd_sb(osd_dt_dev(d)));
1830                 RETURN(ERR_PTR(-ENOMEM));
1831         }
1832
1833         oh->ot_quota_trans = &oti->oti_quota_trans;
1834         memset(oh->ot_quota_trans, 0, sizeof(*oh->ot_quota_trans));
1835         th = &oh->ot_super;
1836         th->th_dev = d;
1837         th->th_result = 0;
1838         oh->ot_credits = 0;
1839         oh->oh_declared_ext = 0;
1840         INIT_LIST_HEAD(&oh->ot_commit_dcb_list);
1841         INIT_LIST_HEAD(&oh->ot_stop_dcb_list);
1842         INIT_LIST_HEAD(&oh->ot_trunc_locks);
1843         osd_th_alloced(oh);
1844
1845         memset(oti->oti_declare_ops, 0,
1846                sizeof(oti->oti_declare_ops));
1847         memset(oti->oti_declare_ops_cred, 0,
1848                sizeof(oti->oti_declare_ops_cred));
1849         memset(oti->oti_declare_ops_used, 0,
1850                sizeof(oti->oti_declare_ops_used));
1851
1852         oti->oti_ins_cache_depth++;
1853
1854         RETURN(th);
1855 }
1856
1857 void osd_trans_dump_creds(const struct lu_env *env, struct thandle *th)
1858 {
1859         struct osd_thread_info *oti = osd_oti_get(env);
1860         struct osd_thandle *oh;
1861
1862         oh = container_of(th, struct osd_thandle, ot_super);
1863         LASSERT(oh != NULL);
1864
1865         CWARN("  create: %u/%u/%u, destroy: %u/%u/%u\n",
1866               oti->oti_declare_ops[OSD_OT_CREATE],
1867               oti->oti_declare_ops_cred[OSD_OT_CREATE],
1868               oti->oti_declare_ops_used[OSD_OT_CREATE],
1869               oti->oti_declare_ops[OSD_OT_DESTROY],
1870               oti->oti_declare_ops_cred[OSD_OT_DESTROY],
1871               oti->oti_declare_ops_used[OSD_OT_DESTROY]);
1872         CWARN("  attr_set: %u/%u/%u, xattr_set: %u/%u/%u\n",
1873               oti->oti_declare_ops[OSD_OT_ATTR_SET],
1874               oti->oti_declare_ops_cred[OSD_OT_ATTR_SET],
1875               oti->oti_declare_ops_used[OSD_OT_ATTR_SET],
1876               oti->oti_declare_ops[OSD_OT_XATTR_SET],
1877               oti->oti_declare_ops_cred[OSD_OT_XATTR_SET],
1878               oti->oti_declare_ops_used[OSD_OT_XATTR_SET]);
1879         CWARN("  write: %u/%u/%u, punch: %u/%u/%u, quota %u/%u/%u\n",
1880               oti->oti_declare_ops[OSD_OT_WRITE],
1881               oti->oti_declare_ops_cred[OSD_OT_WRITE],
1882               oti->oti_declare_ops_used[OSD_OT_WRITE],
1883               oti->oti_declare_ops[OSD_OT_PUNCH],
1884               oti->oti_declare_ops_cred[OSD_OT_PUNCH],
1885               oti->oti_declare_ops_used[OSD_OT_PUNCH],
1886               oti->oti_declare_ops[OSD_OT_QUOTA],
1887               oti->oti_declare_ops_cred[OSD_OT_QUOTA],
1888               oti->oti_declare_ops_used[OSD_OT_QUOTA]);
1889         CWARN("  insert: %u/%u/%u, delete: %u/%u/%u\n",
1890               oti->oti_declare_ops[OSD_OT_INSERT],
1891               oti->oti_declare_ops_cred[OSD_OT_INSERT],
1892               oti->oti_declare_ops_used[OSD_OT_INSERT],
1893               oti->oti_declare_ops[OSD_OT_DELETE],
1894               oti->oti_declare_ops_cred[OSD_OT_DELETE],
1895               oti->oti_declare_ops_used[OSD_OT_DELETE]);
1896         CWARN("  ref_add: %u/%u/%u, ref_del: %u/%u/%u\n",
1897               oti->oti_declare_ops[OSD_OT_REF_ADD],
1898               oti->oti_declare_ops_cred[OSD_OT_REF_ADD],
1899               oti->oti_declare_ops_used[OSD_OT_REF_ADD],
1900               oti->oti_declare_ops[OSD_OT_REF_DEL],
1901               oti->oti_declare_ops_cred[OSD_OT_REF_DEL],
1902               oti->oti_declare_ops_used[OSD_OT_REF_DEL]);
1903 }
1904
1905 /*
1906  * Concurrency: shouldn't matter.
1907  */
1908 static int osd_trans_start(const struct lu_env *env, struct dt_device *d,
1909                            struct thandle *th)
1910 {
1911         struct osd_thread_info *oti = osd_oti_get(env);
1912         struct osd_device *dev = osd_dt_dev(d);
1913         handle_t *jh;
1914         struct osd_thandle *oh;
1915         int rc;
1916
1917         ENTRY;
1918
1919         LASSERT(current->journal_info == NULL);
1920
1921         oh = container_of(th, struct osd_thandle, ot_super);
1922         LASSERT(oh != NULL);
1923         LASSERT(oh->ot_handle == NULL);
1924
1925         rc = dt_txn_hook_start(env, d, th);
1926         if (rc != 0)
1927                 GOTO(out, rc);
1928
1929         if (unlikely(osd_param_is_not_sane(dev, th))) {
1930                 static unsigned long last_printed;
1931                 static int last_credits;
1932
1933                 /*
1934                  * don't make noise on a tiny testing systems
1935                  * actual credits misuse will be caught anyway
1936                  */
1937                 if (last_credits != oh->ot_credits &&
1938                     time_after(jiffies, last_printed +
1939                                cfs_time_seconds(60)) &&
1940                     osd_transaction_size(dev) > 512) {
1941                         CWARN("%s: credits %u > trans_max %u\n", osd_name(dev),
1942                               oh->ot_credits, osd_transaction_size(dev));
1943                         osd_trans_dump_creds(env, th);
1944                         libcfs_debug_dumpstack(NULL);
1945                         last_credits = oh->ot_credits;
1946                         last_printed = jiffies;
1947                 }
1948                 /*
1949                  * XXX Limit the credits to 'max_transaction_buffers', and
1950                  *     let the underlying filesystem to catch the error if
1951                  *     we really need so many credits.
1952                  *
1953                  *     This should be removed when we can calculate the
1954                  *     credits precisely.
1955                  */
1956                 oh->ot_credits = osd_transaction_size(dev);
1957         } else if (ldiskfs_track_declares_assert != 0) {
1958                 /*
1959                  * reserve few credits to prevent an assertion in JBD
1960                  * our debugging mechanism will be able to detected
1961                  * overuse. this can help to debug single-update
1962                  * transactions
1963                  */
1964                 oh->ot_credits += 10;
1965                 if (unlikely(osd_param_is_not_sane(dev, th)))
1966                         oh->ot_credits = osd_transaction_size(dev);
1967         }
1968
1969         if (OBD_FAIL_CHECK(OBD_FAIL_OSD_TXN_START))
1970                 GOTO(out, rc = -EIO);
1971
1972         /*
1973          * XXX temporary stuff. Some abstraction layer should
1974          * be used.
1975          */
1976         jh = osd_journal_start_sb(osd_sb(dev), LDISKFS_HT_MISC, oh->ot_credits);
1977         osd_th_started(oh);
1978         if (!IS_ERR(jh)) {
1979                 oh->ot_handle = jh;
1980                 LASSERT(oti->oti_txns == 0);
1981
1982                 atomic_inc(&dev->od_commit_cb_in_flight);
1983                 lu_ref_add_at(&d->dd_lu_dev.ld_reference, &oh->ot_dev_link,
1984                               "osd-tx", th);
1985                 oti->oti_txns++;
1986                 rc = 0;
1987         } else {
1988                 rc = PTR_ERR(jh);
1989         }
1990 out:
1991         RETURN(rc);
1992 }
1993
1994 static int osd_seq_exists(const struct lu_env *env,
1995                           struct osd_device *osd, u64 seq)
1996 {
1997         struct lu_seq_range *range = &osd_oti_get(env)->oti_seq_range;
1998         struct seq_server_site *ss = osd_seq_site(osd);
1999         int rc;
2000
2001         ENTRY;
2002
2003         LASSERT(ss != NULL);
2004         LASSERT(ss->ss_server_fld != NULL);
2005
2006         rc = osd_fld_lookup(env, osd, seq, range);
2007         if (rc != 0) {
2008                 if (rc != -ENOENT)
2009                         CERROR("%s: can't lookup FLD sequence %#llx: rc = %d\n",
2010                                osd_name(osd), seq, rc);
2011                 RETURN(0);
2012         }
2013
2014         RETURN(ss->ss_node_id == range->lsr_index);
2015 }
2016
2017 static void osd_trans_stop_cb(struct osd_thandle *oth, int result)
2018 {
2019         struct dt_txn_commit_cb *dcb;
2020         struct dt_txn_commit_cb *tmp;
2021
2022         /* call per-transaction stop callbacks if any */
2023         list_for_each_entry_safe(dcb, tmp, &oth->ot_stop_dcb_list,
2024                                  dcb_linkage) {
2025                 LASSERTF(dcb->dcb_magic == TRANS_COMMIT_CB_MAGIC,
2026                          "commit callback entry: magic=%x name='%s'\n",
2027                          dcb->dcb_magic, dcb->dcb_name);
2028                 list_del_init(&dcb->dcb_linkage);
2029                 dcb->dcb_func(NULL, &oth->ot_super, dcb, result);
2030         }
2031 }
2032
2033 /*
2034  * Concurrency: shouldn't matter.
2035  */
2036 static int osd_trans_stop(const struct lu_env *env, struct dt_device *dt,
2037                           struct thandle *th)
2038 {
2039         struct osd_thread_info *oti = osd_oti_get(env);
2040         struct osd_thandle *oh;
2041         struct osd_iobuf *iobuf = &oti->oti_iobuf;
2042         struct osd_device *osd = osd_dt_dev(th->th_dev);
2043         struct qsd_instance *qsd = osd_def_qsd(osd);
2044         struct lquota_trans *qtrans;
2045         LIST_HEAD(truncates);
2046         int rc = 0, remove_agents = 0;
2047
2048         ENTRY;
2049
2050         oh = container_of(th, struct osd_thandle, ot_super);
2051
2052         remove_agents = oh->ot_remove_agents;
2053
2054         qtrans = oh->ot_quota_trans;
2055         oh->ot_quota_trans = NULL;
2056
2057         /* move locks to local list, stop tx, execute truncates */
2058         list_splice(&oh->ot_trunc_locks, &truncates);
2059
2060         if (oh->ot_handle != NULL) {
2061                 int rc2;
2062
2063                 handle_t *hdl = oh->ot_handle;
2064
2065                 /*
2066                  * add commit callback
2067                  * notice we don't do this in osd_trans_start()
2068                  * as underlying transaction can change during truncate
2069                  */
2070                 ldiskfs_journal_callback_add(hdl, osd_trans_commit_cb,
2071                                              &oh->ot_jcb);
2072
2073                 LASSERT(oti->oti_txns == 1);
2074                 oti->oti_txns--;
2075
2076                 rc = dt_txn_hook_stop(env, th);
2077                 if (rc != 0)
2078                         CERROR("%s: failed in transaction hook: rc = %d\n",
2079                                osd_name(osd), rc);
2080
2081                 osd_trans_stop_cb(oh, rc);
2082                 /* hook functions might modify th_sync */
2083                 hdl->h_sync = th->th_sync;
2084
2085                 oh->ot_handle = NULL;
2086                 OSD_CHECK_SLOW_TH(oh, osd, rc2 = ldiskfs_journal_stop(hdl));
2087                 if (rc2 != 0)
2088                         CERROR("%s: failed to stop transaction: rc = %d\n",
2089                                osd_name(osd), rc2);
2090                 if (!rc)
2091                         rc = rc2;
2092
2093                 osd_process_truncates(env, &truncates);
2094         } else {
2095                 osd_trans_stop_cb(oh, th->th_result);
2096                 OBD_FREE_PTR(oh);
2097         }
2098
2099         osd_trunc_unlock_all(env, &truncates);
2100
2101         /* inform the quota slave device that the transaction is stopping */
2102         qsd_op_end(env, qsd, qtrans);
2103
2104         /*
2105          * as we want IO to journal and data IO be concurrent, we don't block
2106          * awaiting data IO completion in osd_do_bio(), instead we wait here
2107          * once transaction is submitted to the journal. all reqular requests
2108          * don't do direct IO (except read/write), thus this wait_event becomes
2109          * no-op for them.
2110          *
2111          * IMPORTANT: we have to wait till any IO submited by the thread is
2112          * completed otherwise iobuf may be corrupted by different request
2113          */
2114         wait_event(iobuf->dr_wait,
2115                        atomic_read(&iobuf->dr_numreqs) == 0);
2116         osd_fini_iobuf(osd, iobuf);
2117         if (!rc)
2118                 rc = iobuf->dr_error;
2119
2120         if (unlikely(remove_agents != 0))
2121                 osd_process_scheduled_agent_removals(env, osd);
2122
2123         LASSERT(oti->oti_ins_cache_depth > 0);
2124         oti->oti_ins_cache_depth--;
2125         /* reset OI cache for safety */
2126         if (oti->oti_ins_cache_depth == 0)
2127                 oti->oti_ins_cache_used = 0;
2128
2129         sb_end_write(osd_sb(osd));
2130
2131         RETURN(rc);
2132 }
2133
2134 static int osd_trans_cb_add(struct thandle *th, struct dt_txn_commit_cb *dcb)
2135 {
2136         struct osd_thandle *oh = container_of(th, struct osd_thandle,
2137                                               ot_super);
2138
2139         LASSERT(dcb->dcb_magic == TRANS_COMMIT_CB_MAGIC);
2140         LASSERT(&dcb->dcb_func != NULL);
2141         if (dcb->dcb_flags & DCB_TRANS_STOP)
2142                 list_add(&dcb->dcb_linkage, &oh->ot_stop_dcb_list);
2143         else
2144                 list_add(&dcb->dcb_linkage, &oh->ot_commit_dcb_list);
2145
2146         return 0;
2147 }
2148
2149 /*
2150  * Called just before object is freed. Releases all resources except for
2151  * object itself (that is released by osd_object_free()).
2152  *
2153  * Concurrency: no concurrent access is possible that late in object
2154  * life-cycle.
2155  */
2156 static void osd_object_delete(const struct lu_env *env, struct lu_object *l)
2157 {
2158         struct osd_object *obj = osd_obj(l);
2159         struct qsd_instance *qsd = osd_def_qsd(osd_obj2dev(obj));
2160         struct inode *inode = obj->oo_inode;
2161         __u64 projid;
2162         qid_t uid;
2163         qid_t gid;
2164
2165         LINVRNT(osd_invariant(obj));
2166
2167         /*
2168          * If object is unlinked remove fid->ino mapping from object index.
2169          */
2170
2171         osd_index_fini(obj);
2172
2173         if (!inode)
2174                 return;
2175
2176         if (osd_has_index(obj) &&  obj->oo_dt.do_index_ops == &osd_index_iam_ops)
2177                 ldiskfs_set_inode_flag(inode, LDISKFS_INODE_JOURNAL_DATA);
2178
2179         uid = i_uid_read(inode);
2180         gid = i_gid_read(inode);
2181         projid = i_projid_read(inode);
2182
2183         obj->oo_inode = NULL;
2184         iput(inode);
2185
2186         /* do not rebalance quota if the caller needs to release memory
2187          * otherwise qsd_refresh_usage() may went into a new ldiskfs
2188          * transaction and risk to deadlock - LU-12178 */
2189         if (current->flags & (PF_MEMALLOC | PF_KSWAPD))
2190                 return;
2191
2192         if (!obj->oo_header && qsd) {
2193                 struct osd_thread_info *info = osd_oti_get(env);
2194                 struct lquota_id_info *qi = &info->oti_qi;
2195
2196                 /* Release granted quota to master if necessary */
2197                 qi->lqi_id.qid_uid = uid;
2198                 qsd_op_adjust(env, qsd, &qi->lqi_id, USRQUOTA);
2199
2200                 qi->lqi_id.qid_uid = gid;
2201                 qsd_op_adjust(env, qsd, &qi->lqi_id, GRPQUOTA);
2202
2203                 qi->lqi_id.qid_uid = projid;
2204                 qsd_op_adjust(env, qsd, &qi->lqi_id, PRJQUOTA);
2205         }
2206 }
2207
2208 /*
2209  * Concurrency: ->loo_object_release() is called under site spin-lock.
2210  */
2211 static void osd_object_release(const struct lu_env *env,
2212                                struct lu_object *l)
2213 {
2214         struct osd_object *o = osd_obj(l);
2215
2216         /*
2217          * nobody should be releasing a non-destroyed object with nlink=0
2218          * the API allows this, but ldiskfs doesn't like and then report
2219          * this inode as deleted
2220          */
2221         LASSERT(!(o->oo_destroyed == 0 && o->oo_inode &&
2222                   o->oo_inode->i_nlink == 0));
2223 }
2224
2225 /*
2226  * Concurrency: shouldn't matter.
2227  */
2228 static int osd_object_print(const struct lu_env *env, void *cookie,
2229                             lu_printer_t p, const struct lu_object *l)
2230 {
2231         struct osd_object *o = osd_obj(l);
2232         struct iam_descr *d;
2233
2234         if (o->oo_dir != NULL)
2235                 d = o->oo_dir->od_container.ic_descr;
2236         else
2237                 d = NULL;
2238         return (*p)(env, cookie,
2239                     LUSTRE_OSD_LDISKFS_NAME"-object@%p(i:%p:%lu/%u)[%s]",
2240                     o, o->oo_inode,
2241                     o->oo_inode ? o->oo_inode->i_ino : 0UL,
2242                     o->oo_inode ? o->oo_inode->i_generation : 0,
2243                     d ? d->id_ops->id_name : "plain");
2244 }
2245
2246 /*
2247  * Concurrency: shouldn't matter.
2248  */
2249 int osd_statfs(const struct lu_env *env, struct dt_device *d,
2250                 struct obd_statfs *sfs, struct obd_statfs_info *info)
2251 {
2252         struct osd_device *osd = osd_dt_dev(d);
2253         struct super_block *sb = osd_sb(osd);
2254         struct kstatfs *ksfs;
2255         __u64 reserved;
2256         int result = 0;
2257
2258         if (unlikely(osd->od_mnt == NULL))
2259                 return -EINPROGRESS;
2260
2261         /* osd_lproc.c call this without env, allocate ksfs for that case */
2262         if (unlikely(env == NULL)) {
2263                 OBD_ALLOC_PTR(ksfs);
2264                 if (ksfs == NULL)
2265                         return -ENOMEM;
2266         } else {
2267                 ksfs = &osd_oti_get(env)->oti_ksfs;
2268         }
2269
2270         result = sb->s_op->statfs(sb->s_root, ksfs);
2271         if (result)
2272                 goto out;
2273
2274         statfs_pack(sfs, ksfs);
2275         if (unlikely(sb->s_flags & SB_RDONLY))
2276                 sfs->os_state |= OS_STATFS_READONLY;
2277
2278         sfs->os_state |= osd->od_nonrotational ? OS_STATFS_NONROT : 0;
2279
2280         if (ldiskfs_has_feature_extents(sb))
2281                 sfs->os_maxbytes = sb->s_maxbytes;
2282         else
2283                 sfs->os_maxbytes = LDISKFS_SB(sb)->s_bitmap_maxbytes;
2284
2285         /*
2286          * Reserve some space so to avoid fragmenting the filesystem too much.
2287          * Fragmentation not only impacts performance, but can also increase
2288          * metadata overhead significantly, causing grant calculation to be
2289          * wrong.
2290          *
2291          * Reserve 0.78% of total space, at least 8MB for small filesystems.
2292          */
2293         BUILD_BUG_ON(OSD_STATFS_RESERVED <= LDISKFS_MAX_BLOCK_SIZE);
2294         reserved = OSD_STATFS_RESERVED >> sb->s_blocksize_bits;
2295         if (likely(sfs->os_blocks >= reserved << OSD_STATFS_RESERVED_SHIFT))
2296                 reserved = sfs->os_blocks >> OSD_STATFS_RESERVED_SHIFT;
2297
2298         sfs->os_blocks -= reserved;
2299         sfs->os_bfree  -= min(reserved, sfs->os_bfree);
2300         sfs->os_bavail -= min(reserved, sfs->os_bavail);
2301
2302 out:
2303         if (unlikely(env == NULL))
2304                 OBD_FREE_PTR(ksfs);
2305         return result;
2306 }
2307
2308 /**
2309  * Estimate space needed for file creations. We assume the largest filename
2310  * which is 2^64 - 1, hence a filename of 20 chars.
2311  * This is 28 bytes per object which is 28MB for 1M objects ... no so bad.
2312  */
2313 #ifdef __LDISKFS_DIR_REC_LEN
2314 #define PER_OBJ_USAGE __LDISKFS_DIR_REC_LEN(20)
2315 #else
2316 #define PER_OBJ_USAGE LDISKFS_DIR_REC_LEN(20)
2317 #endif
2318
2319 /*
2320  * Concurrency: doesn't access mutable data.
2321  */
2322 static void osd_conf_get(const struct lu_env *env,
2323                          const struct dt_device *dev,
2324                          struct dt_device_param *param)
2325 {
2326         struct osd_device *d = osd_dt_dev(dev);
2327         struct super_block *sb = osd_sb(d);
2328         struct blk_integrity *bi = bdev_get_integrity(sb->s_bdev);
2329         const char *name;
2330         int ea_overhead;
2331
2332         /*
2333          * XXX should be taken from not-yet-existing fs abstraction layer.
2334          */
2335         param->ddp_max_name_len = LDISKFS_NAME_LEN;
2336         param->ddp_max_nlink    = LDISKFS_LINK_MAX;
2337         param->ddp_symlink_max  = sb->s_blocksize;
2338         param->ddp_mount_type   = LDD_MT_LDISKFS;
2339         if (ldiskfs_has_feature_extents(sb))
2340                 param->ddp_maxbytes = sb->s_maxbytes;
2341         else
2342                 param->ddp_maxbytes = LDISKFS_SB(sb)->s_bitmap_maxbytes;
2343         /*
2344          * inode are statically allocated, so per-inode space consumption
2345          * is the space consumed by the directory entry
2346          */
2347         param->ddp_inodespace     = PER_OBJ_USAGE;
2348         /*
2349          * EXT_INIT_MAX_LEN is the theoretical maximum extent size (32k blocks
2350          * is 128MB) which is unlikely to be hit in real life. Report a smaller
2351          * maximum length to not under-count the actual number of extents
2352          * needed for writing a file if there are sub-optimal block allocations.
2353          */
2354         param->ddp_max_extent_blks = EXT_INIT_MAX_LEN >> 1;
2355         /* worst-case extent insertion metadata overhead */
2356         param->ddp_extent_tax = 6 * LDISKFS_BLOCK_SIZE(sb);
2357         param->ddp_mntopts = 0;
2358         if (test_opt(sb, XATTR_USER))
2359                 param->ddp_mntopts |= MNTOPT_USERXATTR;
2360         if (test_opt(sb, POSIX_ACL))
2361                 param->ddp_mntopts |= MNTOPT_ACL;
2362
2363         /*
2364          * LOD might calculate the max stripe count based on max_ea_size,
2365          * so we need take account in the overhead as well,
2366          * xattr_header + magic + xattr_entry_head
2367          */
2368         ea_overhead = sizeof(struct ldiskfs_xattr_header) + sizeof(__u32) +
2369                       LDISKFS_XATTR_LEN(XATTR_NAME_MAX_LEN);
2370
2371 #if defined(LDISKFS_FEATURE_INCOMPAT_EA_INODE)
2372         if (ldiskfs_has_feature_ea_inode(sb))
2373                 param->ddp_max_ea_size = LDISKFS_XATTR_MAX_LARGE_EA_SIZE -
2374                                                                 ea_overhead;
2375         else
2376 #endif
2377                 param->ddp_max_ea_size = sb->s_blocksize - ea_overhead;
2378
2379         if (param->ddp_max_ea_size > OBD_MAX_EA_SIZE)
2380                 param->ddp_max_ea_size = OBD_MAX_EA_SIZE;
2381
2382         /*
2383          * Preferred RPC size for efficient disk IO.  4MB shows good
2384          * all-around performance for ldiskfs, but use bigalloc chunk size
2385          * by default if larger.
2386          */
2387 #if defined(LDISKFS_CLUSTER_SIZE)
2388         if (LDISKFS_CLUSTER_SIZE(sb) > DT_DEF_BRW_SIZE)
2389                 param->ddp_brw_size = LDISKFS_CLUSTER_SIZE(sb);
2390         else
2391 #endif
2392                 param->ddp_brw_size = DT_DEF_BRW_SIZE;
2393
2394         param->ddp_t10_cksum_type = 0;
2395         if (bi) {
2396                 unsigned short interval = blk_integrity_interval(bi);
2397                 name = blk_integrity_name(bi);
2398                 /*
2399                  * Expected values:
2400                  * T10-DIF-TYPE1-CRC
2401                  * T10-DIF-TYPE3-CRC
2402                  * T10-DIF-TYPE1-IP
2403                  * T10-DIF-TYPE3-IP
2404                  */
2405                 if (strncmp(name, "T10-DIF-TYPE",
2406                             sizeof("T10-DIF-TYPE") - 1) == 0) {
2407                         /* also skip "1/3-" at end */
2408                         const int type_off = sizeof("T10-DIF-TYPE.");
2409                         char type_number = name[type_off - 2];
2410
2411                         if (interval != 512 && interval != 4096) {
2412                                 CERROR("%s: unsupported T10PI sector size %u\n",
2413                                        d->od_svname, interval);
2414                         } else if (type_number != '1' && type_number != '3') {
2415                                 CERROR("%s: unsupported T10PI type %s\n",
2416                                        d->od_svname, name);
2417                         } else if (strcmp(name + type_off, "CRC") == 0) {
2418                                 d->od_t10_type = type_number == '1' ?
2419                                         OSD_T10_TYPE1_CRC : OSD_T10_TYPE3_CRC;
2420                                 param->ddp_t10_cksum_type = interval == 512 ?
2421                                         OBD_CKSUM_T10CRC512 :
2422                                         OBD_CKSUM_T10CRC4K;
2423                         } else if (strcmp(name + type_off, "IP") == 0) {
2424                                 d->od_t10_type = type_number == '1' ?
2425                                         OSD_T10_TYPE1_IP : OSD_T10_TYPE3_IP;
2426                                 param->ddp_t10_cksum_type = interval == 512 ?
2427                                         OBD_CKSUM_T10IP512 :
2428                                         OBD_CKSUM_T10IP4K;
2429                         } else {
2430                                 CERROR("%s: unsupported checksum type of T10PI type '%s'\n",
2431                                        d->od_svname, name);
2432                         }
2433
2434                 } else {
2435                         CERROR("%s: unsupported T10PI type '%s'\n",
2436                                d->od_svname, name);
2437                 }
2438         }
2439
2440         param->ddp_has_lseek_data_hole = true;
2441 }
2442
2443 static struct super_block *osd_mnt_sb_get(const struct dt_device *d)
2444 {
2445         return osd_sb(osd_dt_dev(d));
2446 }
2447
2448 /*
2449  * Concurrency: shouldn't matter.
2450  */
2451 static int osd_sync(const struct lu_env *env, struct dt_device *d)
2452 {
2453         int rc;
2454         struct super_block *s = osd_sb(osd_dt_dev(d));
2455         ENTRY;
2456
2457         down_read(&s->s_umount);
2458         rc = s->s_op->sync_fs(s, 1);
2459         up_read(&s->s_umount);
2460
2461         CDEBUG(D_CACHE, "%s: synced OSD: rc = %d\n", osd_dt_dev(d)->od_svname,
2462                rc);
2463
2464         return rc;
2465 }
2466
2467 /**
2468  * Start commit for OSD device.
2469  *
2470  * An implementation of dt_commit_async method for OSD device.
2471  * Asychronously starts underlayng fs sync and thereby a transaction
2472  * commit.
2473  *
2474  * \param env environment
2475  * \param d dt device
2476  *
2477  * \see dt_device_operations
2478  */
2479 static int osd_commit_async(const struct lu_env *env,
2480                             struct dt_device *d)
2481 {
2482         struct super_block *s = osd_sb(osd_dt_dev(d));
2483         int rc;
2484
2485         ENTRY;
2486
2487         CDEBUG(D_HA, "%s: async commit OSD\n", osd_dt_dev(d)->od_svname);
2488         down_read(&s->s_umount);
2489         rc = s->s_op->sync_fs(s, 0);
2490         up_read(&s->s_umount);
2491
2492         RETURN(rc);
2493 }
2494
2495 static int (*priv_security_file_alloc)(struct file *file);
2496
2497 int osd_security_file_alloc(struct file *file)
2498 {
2499         if (priv_security_file_alloc)
2500                 return priv_security_file_alloc(file);
2501         return 0;
2502 }
2503
2504 /*
2505  * Concurrency: shouldn't matter.
2506  */
2507 static int osd_ro(const struct lu_env *env, struct dt_device *d)
2508 {
2509         struct super_block *sb = osd_sb(osd_dt_dev(d));
2510         struct block_device *dev = sb->s_bdev;
2511         int rc = -EOPNOTSUPP;
2512
2513         ENTRY;
2514
2515         CERROR("%s: %lx CANNOT BE SET READONLY: rc = %d\n",
2516                osd_dt_dev(d)->od_svname, (long)dev, rc);
2517
2518         RETURN(rc);
2519 }
2520
2521 /**
2522  * Note: we do not count into QUOTA here.
2523  * If we mount with --data_journal we may need more.
2524  */
2525 const int osd_dto_credits_noquota[DTO_NR] = {
2526         /**
2527          * Insert.
2528          * INDEX_EXTRA_TRANS_BLOCKS(8) +
2529          * SINGLEDATA_TRANS_BLOCKS(8)
2530          * XXX Note: maybe iam need more, since iam have more level than
2531          *           EXT3 htree.
2532          */
2533         [DTO_INDEX_INSERT]  = 16,
2534         /**
2535          * Delete
2536          * just modify a single entry, probably merge few within a block
2537          */
2538         [DTO_INDEX_DELETE]  = 1,
2539         /**
2540          * Used for OI scrub
2541          */
2542         [DTO_INDEX_UPDATE]  = 16,
2543         /**
2544          * 4(inode, inode bits, groups, GDT)
2545          *   notice: OI updates are counted separately with DTO_INDEX_INSERT
2546          */
2547         [DTO_OBJECT_CREATE] = 4,
2548         /**
2549          * 4(inode, inode bits, groups, GDT)
2550          *   notice: OI updates are counted separately with DTO_INDEX_DELETE
2551          */
2552         [DTO_OBJECT_DELETE] = 4,
2553         /**
2554          * Attr set credits (inode)
2555          */
2556         [DTO_ATTR_SET_BASE] = 1,
2557         /**
2558          * Xattr set. The same as xattr of EXT3.
2559          * DATA_TRANS_BLOCKS(14)
2560          * XXX Note: in original MDS implmentation INDEX_EXTRA_TRANS_BLOCKS
2561          * are also counted in. Do not know why?
2562          */
2563         [DTO_XATTR_SET]     = 14,
2564         /**
2565          * credits for inode change during write.
2566          */
2567         [DTO_WRITE_BASE]    = 3,
2568         /**
2569          * credits for single block write.
2570          */
2571         [DTO_WRITE_BLOCK]   = 14,
2572         /**
2573          * Attr set credits for chown.
2574          * This is extra credits for setattr, and it is null without quota
2575          */
2576         [DTO_ATTR_SET_CHOWN] = 0
2577 };
2578
2579 /* reserve or free quota for some operation */
2580 static int osd_reserve_or_free_quota(const struct lu_env *env,
2581                                      struct dt_device *dev,
2582                                      enum quota_type type, __u64 uid,
2583                                      __u64 gid, __s64 count, bool is_md)
2584 {
2585         int rc;
2586         struct osd_device       *osd = osd_dt_dev(dev);
2587         struct osd_thread_info  *info = osd_oti_get(env);
2588         struct lquota_id_info   *qi = &info->oti_qi;
2589         struct qsd_instance     *qsd = NULL;
2590
2591         ENTRY;
2592
2593         if (is_md)
2594                 qsd = osd->od_quota_slave_md;
2595         else
2596                 qsd = osd->od_quota_slave_dt;
2597
2598         rc = quota_reserve_or_free(env, qsd, qi, type, uid, gid, count, is_md);
2599         RETURN(rc);
2600 }
2601
2602 static const struct dt_device_operations osd_dt_ops = {
2603         .dt_root_get              = osd_root_get,
2604         .dt_statfs                = osd_statfs,
2605         .dt_trans_create          = osd_trans_create,
2606         .dt_trans_start           = osd_trans_start,
2607         .dt_trans_stop            = osd_trans_stop,
2608         .dt_trans_cb_add          = osd_trans_cb_add,
2609         .dt_conf_get              = osd_conf_get,
2610         .dt_mnt_sb_get            = osd_mnt_sb_get,
2611         .dt_sync                  = osd_sync,
2612         .dt_ro                    = osd_ro,
2613         .dt_commit_async          = osd_commit_async,
2614         .dt_reserve_or_free_quota = osd_reserve_or_free_quota,
2615 };
2616
2617 static void osd_read_lock(const struct lu_env *env, struct dt_object *dt,
2618                           unsigned int role)
2619 {
2620         struct osd_object *obj = osd_dt_obj(dt);
2621         struct osd_thread_info *oti = osd_oti_get(env);
2622
2623         LINVRNT(osd_invariant(obj));
2624
2625         LASSERT(obj->oo_owner != env);
2626         down_read_nested(&obj->oo_sem, role);
2627
2628         LASSERT(obj->oo_owner == NULL);
2629         oti->oti_r_locks++;
2630 }
2631
2632 static void osd_write_lock(const struct lu_env *env, struct dt_object *dt,
2633                            unsigned int role)
2634 {
2635         struct osd_object *obj = osd_dt_obj(dt);
2636         struct osd_thread_info *oti = osd_oti_get(env);
2637
2638         LINVRNT(osd_invariant(obj));
2639
2640         LASSERT(obj->oo_owner != env);
2641         down_write_nested(&obj->oo_sem, role);
2642
2643         LASSERT(obj->oo_owner == NULL);
2644         obj->oo_owner = env;
2645         oti->oti_w_locks++;
2646 }
2647
2648 static void osd_read_unlock(const struct lu_env *env, struct dt_object *dt)
2649 {
2650         struct osd_object *obj = osd_dt_obj(dt);
2651         struct osd_thread_info *oti = osd_oti_get(env);
2652
2653         LINVRNT(osd_invariant(obj));
2654
2655         LASSERT(oti->oti_r_locks > 0);
2656         oti->oti_r_locks--;
2657         up_read(&obj->oo_sem);
2658 }
2659
2660 static void osd_write_unlock(const struct lu_env *env, struct dt_object *dt)
2661 {
2662         struct osd_object *obj = osd_dt_obj(dt);
2663         struct osd_thread_info *oti = osd_oti_get(env);
2664
2665         LINVRNT(osd_invariant(obj));
2666
2667         LASSERT(obj->oo_owner == env);
2668         LASSERT(oti->oti_w_locks > 0);
2669         oti->oti_w_locks--;
2670         obj->oo_owner = NULL;
2671         up_write(&obj->oo_sem);
2672 }
2673
2674 static int osd_write_locked(const struct lu_env *env, struct dt_object *dt)
2675 {
2676         struct osd_object *obj = osd_dt_obj(dt);
2677
2678         LINVRNT(osd_invariant(obj));
2679
2680         return obj->oo_owner == env;
2681 }
2682
2683 static void osd_inode_getattr(const struct lu_env *env,
2684                               struct inode *inode, struct lu_attr *attr)
2685 {
2686         attr->la_valid  |= LA_ATIME | LA_MTIME | LA_CTIME | LA_MODE |
2687                            LA_SIZE | LA_BLOCKS | LA_UID | LA_GID |
2688                            LA_PROJID | LA_FLAGS | LA_NLINK | LA_RDEV |
2689                            LA_BLKSIZE | LA_TYPE | LA_BTIME;
2690
2691         attr->la_atime = inode->i_atime.tv_sec;
2692         attr->la_mtime = inode->i_mtime.tv_sec;
2693         attr->la_ctime = inode->i_ctime.tv_sec;
2694         attr->la_btime = LDISKFS_I(inode)->i_crtime.tv_sec;
2695         attr->la_mode    = inode->i_mode;
2696         attr->la_size    = i_size_read(inode);
2697         attr->la_blocks  = inode->i_blocks;
2698         attr->la_uid     = i_uid_read(inode);
2699         attr->la_gid     = i_gid_read(inode);
2700         attr->la_projid  = i_projid_read(inode);
2701         attr->la_flags   = ll_inode_to_ext_flags(inode->i_flags);
2702         attr->la_nlink   = inode->i_nlink;
2703         attr->la_rdev    = inode->i_rdev;
2704         attr->la_blksize = 1 << inode->i_blkbits;
2705         attr->la_blkbits = inode->i_blkbits;
2706         /*
2707          * Ext4 did not transfer inherit flags from raw inode
2708          * to inode flags, and ext4 internally test raw inode
2709          * @i_flags directly. Instead of patching ext4, we do it here.
2710          */
2711         if (LDISKFS_I(inode)->i_flags & LUSTRE_PROJINHERIT_FL)
2712                 attr->la_flags |= LUSTRE_PROJINHERIT_FL;
2713 }
2714
2715 static int osd_dirent_count(const struct lu_env *env, struct dt_object *dt,
2716                             u64 *count)
2717 {
2718         struct osd_object *obj = osd_dt_obj(dt);
2719         const struct dt_it_ops *iops;
2720         struct dt_it *it;
2721         int rc;
2722
2723         ENTRY;
2724
2725         LASSERT(S_ISDIR(obj->oo_inode->i_mode));
2726         LASSERT(fid_is_namespace_visible(lu_object_fid(&obj->oo_dt.do_lu)));
2727
2728         if (obj->oo_dirent_count != LU_DIRENT_COUNT_UNSET) {
2729                 *count = obj->oo_dirent_count;
2730                 RETURN(0);
2731         }
2732
2733         /* directory not initialized yet */
2734         if (!dt->do_index_ops) {
2735                 *count = 0;
2736                 RETURN(0);
2737         }
2738
2739         iops = &dt->do_index_ops->dio_it;
2740         it = iops->init(env, dt, LUDA_64BITHASH);
2741         if (IS_ERR(it))
2742                 RETURN(PTR_ERR(it));
2743
2744         rc = iops->load(env, it, 0);
2745         if (rc < 0) {
2746                 if (rc == -ENODATA) {
2747                         rc = 0;
2748                         *count = 0;
2749                 }
2750                 GOTO(out, rc);
2751         }
2752         if (rc > 0)
2753                 rc = iops->next(env, it);
2754
2755         for (*count = 0; rc == 0 || rc == -ESTALE; rc = iops->next(env, it)) {
2756                 if (rc == -ESTALE)
2757                         continue;
2758
2759                 if (iops->key_size(env, it) == 0)
2760                         continue;
2761
2762                 (*count)++;
2763         }
2764         if (rc == 1) {
2765                 obj->oo_dirent_count = *count;
2766                 rc = 0;
2767         }
2768 out:
2769         iops->put(env, it);
2770         iops->fini(env, it);
2771
2772         RETURN(rc);
2773 }
2774
2775 static int osd_attr_get(const struct lu_env *env, struct dt_object *dt,
2776                         struct lu_attr *attr)
2777 {
2778         struct osd_object *obj = osd_dt_obj(dt);
2779         int rc = 0;
2780
2781         if (unlikely(!dt_object_exists(dt)))
2782                 return -ENOENT;
2783         if (unlikely(obj->oo_destroyed))
2784                 return -ENOENT;
2785
2786         LASSERT(!dt_object_remote(dt));
2787         LINVRNT(osd_invariant(obj));
2788
2789         spin_lock(&obj->oo_guard);
2790         osd_inode_getattr(env, obj->oo_inode, attr);
2791         if (obj->oo_lma_flags & LUSTRE_ORPHAN_FL) {
2792                 attr->la_valid |= LA_FLAGS;
2793                 attr->la_flags |= LUSTRE_ORPHAN_FL;
2794         }
2795         if (obj->oo_lma_flags & LUSTRE_ENCRYPT_FL) {
2796                 attr->la_valid |= LA_FLAGS;
2797                 attr->la_flags |= LUSTRE_ENCRYPT_FL;
2798         }
2799         spin_unlock(&obj->oo_guard);
2800
2801         if (S_ISDIR(obj->oo_inode->i_mode) &&
2802             fid_is_namespace_visible(lu_object_fid(&dt->do_lu)))
2803                 rc = osd_dirent_count(env, dt, &attr->la_dirent_count);
2804
2805         return rc;
2806 }
2807
2808 static int osd_declare_attr_qid(const struct lu_env *env,
2809                                 struct osd_object *obj,
2810                                 struct osd_thandle *oh, long long bspace,
2811                                 qid_t old_id, qid_t new_id, bool enforce,
2812                                 unsigned int type)
2813 {
2814         int rc;
2815         struct osd_thread_info *info = osd_oti_get(env);
2816         struct lquota_id_info  *qi = &info->oti_qi;
2817
2818         qi->lqi_type = type;
2819         /* inode accounting */
2820         qi->lqi_is_blk = false;
2821
2822         /* one more inode for the new id ... */
2823         qi->lqi_id.qid_uid = new_id;
2824         qi->lqi_space      = 1;
2825         /* Reserve credits for the new id */
2826         rc = osd_declare_qid(env, oh, qi, NULL, enforce, NULL);
2827         if (rc == -EDQUOT || rc == -EINPROGRESS)
2828                 rc = 0;
2829         if (rc)
2830                 RETURN(rc);
2831
2832         /* and one less inode for the current id */
2833         qi->lqi_id.qid_uid = old_id;
2834         qi->lqi_space = -1;
2835         rc = osd_declare_qid(env, oh, qi, obj, enforce, NULL);
2836         if (rc == -EDQUOT || rc == -EINPROGRESS)
2837                 rc = 0;
2838         if (rc)
2839                 RETURN(rc);
2840
2841         /* block accounting */
2842         qi->lqi_is_blk = true;
2843
2844         /* more blocks for the new id ... */
2845         qi->lqi_id.qid_uid = new_id;
2846         qi->lqi_space      = bspace;
2847         /*
2848          * Credits for the new uid has been reserved, re-use "obj"
2849          * to save credit reservation.
2850          */
2851         rc = osd_declare_qid(env, oh, qi, obj, enforce, NULL);
2852         if (rc == -EDQUOT || rc == -EINPROGRESS)
2853                 rc = 0;
2854         if (rc)
2855                 RETURN(rc);
2856
2857         /* and finally less blocks for the current uid */
2858         qi->lqi_id.qid_uid = old_id;
2859         qi->lqi_space      = -bspace;
2860         rc = osd_declare_qid(env, oh, qi, obj, enforce, NULL);
2861         if (rc == -EDQUOT || rc == -EINPROGRESS)
2862                 rc = 0;
2863
2864         RETURN(rc);
2865 }
2866
2867 static int osd_declare_attr_set(const struct lu_env *env,
2868                                 struct dt_object *dt,
2869                                 const struct lu_attr *attr,
2870                                 struct thandle *handle)
2871 {
2872         struct osd_thandle *oh;
2873         struct osd_object *obj;
2874         qid_t uid;
2875         qid_t gid;
2876         long long bspace;
2877         int rc = 0;
2878         bool enforce;
2879
2880         ENTRY;
2881
2882         LASSERT(dt != NULL);
2883         LASSERT(handle != NULL);
2884
2885         obj = osd_dt_obj(dt);
2886         LASSERT(osd_invariant(obj));
2887
2888         oh = container_of(handle, struct osd_thandle, ot_super);
2889         LASSERT(oh->ot_handle == NULL);
2890
2891         osd_trans_declare_op(env, oh, OSD_OT_ATTR_SET,
2892                              osd_dto_credits_noquota[DTO_ATTR_SET_BASE]);
2893
2894         osd_trans_declare_op(env, oh, OSD_OT_XATTR_SET,
2895                              osd_dto_credits_noquota[DTO_XATTR_SET]);
2896
2897         if (attr == NULL || obj->oo_inode == NULL)
2898                 RETURN(rc);
2899
2900         bspace   = obj->oo_inode->i_blocks << 9;
2901         bspace   = toqb(bspace);
2902
2903         /*
2904          * Changing ownership is always preformed by super user, it should not
2905          * fail with EDQUOT unless required explicitly.
2906          *
2907          * We still need to call the osd_declare_qid() to calculate the journal
2908          * credits for updating quota accounting files and to trigger quota
2909          * space adjustment once the operation is completed.
2910          */
2911         if (attr->la_valid & LA_UID || attr->la_valid & LA_GID) {
2912                 /* USERQUOTA */
2913                 uid = i_uid_read(obj->oo_inode);
2914                 enforce = (attr->la_valid & LA_UID) && (attr->la_uid != uid);
2915                 rc = osd_declare_attr_qid(env, obj, oh, bspace, uid,
2916                                           attr->la_uid, enforce, USRQUOTA);
2917                 if (rc)
2918                         RETURN(rc);
2919
2920                 gid = i_gid_read(obj->oo_inode);
2921                 CDEBUG(D_QUOTA, "declare uid %d -> %d gid %d -> %d\n", uid,
2922                        attr->la_uid, gid, attr->la_gid);
2923                 enforce = (attr->la_valid & LA_GID) && (attr->la_gid != gid);
2924                 rc = osd_declare_attr_qid(env, obj, oh, bspace, gid,
2925                                           attr->la_gid, enforce, GRPQUOTA);
2926                 if (rc)
2927                         RETURN(rc);
2928
2929         }
2930 #ifdef HAVE_PROJECT_QUOTA
2931         if (attr->la_valid & LA_PROJID) {
2932                 __u32 projid = i_projid_read(obj->oo_inode);
2933
2934                 enforce = (attr->la_valid & LA_PROJID) &&
2935                                         (attr->la_projid != projid);
2936                 rc = osd_declare_attr_qid(env, obj, oh, bspace,
2937                                           (qid_t)projid, (qid_t)attr->la_projid,
2938                                           enforce, PRJQUOTA);
2939                 if (rc)
2940                         RETURN(rc);
2941         }
2942 #endif
2943         RETURN(rc);
2944 }
2945
2946 static int osd_inode_setattr(const struct lu_env *env,
2947                              struct inode *inode, const struct lu_attr *attr)
2948 {
2949         __u64 bits = attr->la_valid;
2950
2951         /* Only allow set size for regular file */
2952         if (!S_ISREG(inode->i_mode))
2953                 bits &= ~(LA_SIZE | LA_BLOCKS);
2954
2955         if (bits == 0)
2956                 return 0;
2957
2958         if (bits & LA_ATIME)
2959                 inode->i_atime = osd_inode_time(inode, attr->la_atime);
2960         if (bits & LA_CTIME)
2961                 inode->i_ctime = osd_inode_time(inode, attr->la_ctime);
2962         if (bits & LA_MTIME)
2963                 inode->i_mtime = osd_inode_time(inode, attr->la_mtime);
2964         if (bits & LA_SIZE) {
2965                 spin_lock(&inode->i_lock);
2966                 LDISKFS_I(inode)->i_disksize = attr->la_size;
2967                 i_size_write(inode, attr->la_size);
2968                 spin_unlock(&inode->i_lock);
2969         }
2970
2971         /*
2972          * OSD should not change "i_blocks" which is used by quota.
2973          * "i_blocks" should be changed by ldiskfs only.
2974          */
2975         if (bits & LA_MODE)
2976                 inode->i_mode = (inode->i_mode & S_IFMT) |
2977                                 (attr->la_mode & ~S_IFMT);
2978         if (bits & LA_UID)
2979                 i_uid_write(inode, attr->la_uid);
2980         if (bits & LA_GID)
2981                 i_gid_write(inode, attr->la_gid);
2982         if (bits & LA_PROJID)
2983                 i_projid_write(inode, attr->la_projid);
2984         if (bits & LA_NLINK)
2985                 set_nlink(inode, attr->la_nlink);
2986         if (bits & LA_RDEV)
2987                 inode->i_rdev = attr->la_rdev;
2988
2989         if (bits & LA_FLAGS) {
2990                 /* always keep S_NOCMTIME */
2991                 inode->i_flags = ll_ext_to_inode_flags(attr->la_flags) |
2992                                  S_NOCMTIME;
2993 #if defined(S_ENCRYPTED)
2994                 /* Always remove S_ENCRYPTED, because ldiskfs must not be
2995                  * aware of encryption status. It is just stored into LMA
2996                  * so that it can be forwared to client side.
2997                  */
2998                 inode->i_flags &= ~S_ENCRYPTED;
2999 #endif
3000                 /*
3001                  * Ext4 did not transfer inherit flags from
3002                  * @inode->i_flags to raw inode i_flags when writing
3003                  * flags, we do it explictly here.
3004                  */
3005                 if (attr->la_flags & LUSTRE_PROJINHERIT_FL)
3006                         LDISKFS_I(inode)->i_flags |= LUSTRE_PROJINHERIT_FL;
3007                 else
3008                         LDISKFS_I(inode)->i_flags &= ~LUSTRE_PROJINHERIT_FL;
3009         }
3010         return 0;
3011 }
3012
3013 #ifdef HAVE_PROJECT_QUOTA
3014 static int osd_transfer_project(struct inode *inode, __u32 projid,
3015                                 struct thandle *handle)
3016 {
3017         struct super_block *sb = inode->i_sb;
3018         struct ldiskfs_inode_info *ei = LDISKFS_I(inode);
3019         int err;
3020         kprojid_t kprojid;
3021         struct ldiskfs_iloc iloc;
3022         struct ldiskfs_inode *raw_inode;
3023         struct dquot *transfer_to[LDISKFS_MAXQUOTAS] = { };
3024
3025         if (!ldiskfs_has_feature_project(sb)) {
3026                 LASSERT(__kprojid_val(LDISKFS_I(inode)->i_projid)
3027                         == LDISKFS_DEF_PROJID);
3028                 if (projid != LDISKFS_DEF_PROJID)
3029                         return -EOPNOTSUPP;
3030                 else
3031                         return 0;
3032         }
3033
3034         if (LDISKFS_INODE_SIZE(sb) <= LDISKFS_GOOD_OLD_INODE_SIZE)
3035                 return -EOPNOTSUPP;
3036
3037         kprojid = make_kprojid(&init_user_ns, (projid_t)projid);
3038         if (projid_eq(kprojid, LDISKFS_I(inode)->i_projid))
3039                 return 0;
3040
3041         err = ldiskfs_get_inode_loc(inode, &iloc);
3042         if (err)
3043                 return err;
3044
3045         raw_inode = ldiskfs_raw_inode(&iloc);
3046         if (!LDISKFS_FITS_IN_INODE(raw_inode, ei, i_projid)) {
3047                 struct osd_thandle *oh = container_of(handle,
3048                                                       struct osd_thandle,
3049                                                       ot_super);
3050                 /**
3051                  * try to expand inode size automatically.
3052                  */
3053                 ldiskfs_mark_inode_dirty(oh->ot_handle, inode);
3054                 if (!LDISKFS_FITS_IN_INODE(raw_inode, ei, i_projid)) {
3055                         err = -EOVERFLOW;
3056                         brelse(iloc.bh);
3057                         return err;
3058                 }
3059         }
3060         brelse(iloc.bh);
3061
3062         dquot_initialize(inode);
3063         transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
3064         if (transfer_to[PRJQUOTA]) {
3065                 err = __dquot_transfer(inode, transfer_to);
3066                 dqput(transfer_to[PRJQUOTA]);
3067                 if (err)
3068                         return err;
3069         }
3070
3071         return err;
3072 }
3073 #endif
3074
3075 static int osd_quota_transfer(struct inode *inode, const struct lu_attr *attr,
3076                               struct thandle *handle)
3077 {
3078         int rc;
3079
3080         if ((attr->la_valid & LA_UID && attr->la_uid != i_uid_read(inode)) ||
3081             (attr->la_valid & LA_GID && attr->la_gid != i_gid_read(inode))) {
3082                 struct iattr iattr;
3083
3084                 CDEBUG(D_QUOTA,
3085                        "executing dquot_transfer inode %ld uid %d -> %d gid %d -> %d\n",
3086                        inode->i_ino, i_uid_read(inode), attr->la_uid,
3087                        i_gid_read(inode), attr->la_gid);
3088
3089                 dquot_initialize(inode);
3090                 iattr.ia_valid = 0;
3091                 if (attr->la_valid & LA_UID)
3092                         iattr.ia_valid |= ATTR_UID;
3093                 if (attr->la_valid & LA_GID)
3094                         iattr.ia_valid |= ATTR_GID;
3095                 iattr.ia_uid = make_kuid(&init_user_ns, attr->la_uid);
3096                 iattr.ia_gid = make_kgid(&init_user_ns, attr->la_gid);
3097
3098                 rc = dquot_transfer(inode, &iattr);
3099                 if (rc) {
3100                         CERROR("%s: quota transfer failed. Is quota enforcement enabled on the ldiskfs filesystem? rc = %d\n",
3101                                osd_ino2name(inode), rc);
3102                         return rc;
3103                 }
3104         }
3105
3106         /* Handle project id transfer here properly */
3107         if (attr->la_valid & LA_PROJID &&
3108             attr->la_projid != i_projid_read(inode)) {
3109                 if (!projid_valid(make_kprojid(&init_user_ns, attr->la_projid)))
3110                         return -EINVAL;
3111 #ifdef HAVE_PROJECT_QUOTA
3112                 rc = osd_transfer_project(inode, attr->la_projid, handle);
3113 #else
3114                 rc = -ENOTSUPP;
3115 #endif
3116                 if (rc) {
3117                         CERROR("%s: quota transfer failed. Is project enforcement enabled on the ldiskfs filesystem? rc = %d\n",
3118                                osd_ino2name(inode), rc);
3119                         return rc;
3120                 }
3121         }
3122         return 0;
3123 }
3124
3125 static int osd_attr_set(const struct lu_env *env,
3126                         struct dt_object *dt,
3127                         const struct lu_attr *attr,
3128                         struct thandle *handle)
3129 {
3130         struct osd_object *obj = osd_dt_obj(dt);
3131         struct inode *inode;
3132         int rc;
3133
3134         if (!dt_object_exists(dt))
3135                 return -ENOENT;
3136
3137         LASSERT(handle != NULL);
3138         LASSERT(!dt_object_remote(dt));
3139         LASSERT(osd_invariant(obj));
3140
3141         osd_trans_exec_op(env, handle, OSD_OT_ATTR_SET);
3142
3143         if (OBD_FAIL_CHECK(OBD_FAIL_OSD_FID_MAPPING) &&
3144             !osd_obj2dev(obj)->od_is_ost) {
3145                 struct osd_thread_info *oti = osd_oti_get(env);
3146                 const struct lu_fid *fid0 = lu_object_fid(&dt->do_lu);
3147                 struct lu_fid *fid1 = &oti->oti_fid;
3148                 struct osd_inode_id *id = &oti->oti_id;
3149                 struct iam_path_descr *ipd;
3150                 struct iam_container *bag;
3151                 struct osd_thandle *oh;
3152                 int rc;
3153
3154                 fid_cpu_to_be(fid1, fid0);
3155                 memset(id, 1, sizeof(*id));
3156                 bag = &osd_fid2oi(osd_dev(dt->do_lu.lo_dev),
3157                                   fid0)->oi_dir.od_container;
3158                 ipd = osd_idx_ipd_get(env, bag);
3159                 if (unlikely(ipd == NULL))
3160                         RETURN(-ENOMEM);
3161
3162                 oh = container_of(handle, struct osd_thandle, ot_super);
3163                 rc = iam_update(oh->ot_handle, bag,
3164                                 (const struct iam_key *)fid1,
3165                                 (const struct iam_rec *)id, ipd);
3166                 osd_ipd_put(env, bag, ipd);
3167                 return(rc > 0 ? 0 : rc);
3168         }
3169
3170         inode = obj->oo_inode;
3171
3172         rc = osd_quota_transfer(inode, attr, handle);
3173         if (rc)
3174                 return rc;
3175
3176         spin_lock(&obj->oo_guard);
3177         rc = osd_inode_setattr(env, inode, attr);
3178         spin_unlock(&obj->oo_guard);
3179         if (rc != 0)
3180                 GOTO(out, rc);
3181
3182         osd_dirty_inode(inode, I_DIRTY_DATASYNC);
3183
3184         osd_trans_exec_check(env, handle, OSD_OT_ATTR_SET);
3185
3186         if (!(attr->la_valid & LA_FLAGS))
3187                 GOTO(out, rc);
3188
3189         /* Let's check if there are extra flags need to be set into LMA */
3190         if (attr->la_flags & LUSTRE_LMA_FL_MASKS) {
3191                 struct osd_thread_info *info = osd_oti_get(env);
3192                 struct lustre_mdt_attrs *lma = &info->oti_ost_attrs.loa_lma;
3193
3194                 LASSERT(!obj->oo_pfid_in_lma);
3195
3196                 rc = osd_get_lma(info, inode, &info->oti_obj_dentry,
3197                                  &info->oti_ost_attrs);
3198                 if (rc)
3199                         GOTO(out, rc);
3200
3201                 lma->lma_incompat |=
3202                         lustre_to_lma_flags(attr->la_flags);
3203                 lustre_lma_swab(lma);
3204
3205                 osd_trans_exec_op(env, handle, OSD_OT_XATTR_SET);
3206
3207                 rc = __osd_xattr_set(info, inode, XATTR_NAME_LMA,
3208                                      lma, sizeof(*lma), XATTR_REPLACE);
3209                 if (rc != 0) {
3210                         struct osd_device *osd = osd_obj2dev(obj);
3211
3212                         CWARN("%s: set "DFID" lma flags %u failed: rc = %d\n",
3213                               osd_name(osd), PFID(lu_object_fid(&dt->do_lu)),
3214                               lma->lma_incompat, rc);
3215                 } else {
3216                         obj->oo_lma_flags =
3217                                 attr->la_flags & LUSTRE_LMA_FL_MASKS;
3218                 }
3219                 osd_trans_exec_check(env, handle, OSD_OT_XATTR_SET);
3220         }
3221 out:
3222
3223         return rc;
3224 }
3225
3226 static struct dentry *osd_child_dentry_get(const struct lu_env *env,
3227                                            struct osd_object *obj,
3228                                            const char *name, const int namelen)
3229 {
3230         return osd_child_dentry_by_inode(env, obj->oo_inode, name, namelen);
3231 }
3232
3233 static int osd_mkfile(struct osd_thread_info *info, struct osd_object *obj,
3234                       umode_t mode, struct dt_allocation_hint *hint,
3235                       struct thandle *th, struct lu_attr *attr)
3236 {
3237         int result;
3238         struct osd_device *osd = osd_obj2dev(obj);
3239         struct osd_thandle *oth;
3240         struct dt_object *parent = NULL;
3241         struct inode *inode;
3242         struct iattr iattr = {
3243                 .ia_valid = ATTR_UID | ATTR_GID |
3244                             ATTR_CTIME | ATTR_MTIME | ATTR_ATIME,
3245                 .ia_ctime.tv_sec = attr->la_ctime,
3246                 .ia_mtime.tv_sec = attr->la_mtime,
3247                 .ia_atime.tv_sec = attr->la_atime,
3248                 .ia_uid = GLOBAL_ROOT_UID,
3249                 .ia_gid = GLOBAL_ROOT_GID,
3250         };
3251         const struct osd_timespec omit = { .tv_nsec = UTIME_OMIT };
3252
3253         if (attr->la_valid & LA_UID)
3254                 iattr.ia_uid = make_kuid(&init_user_ns, attr->la_uid);
3255         if (attr->la_valid & LA_GID)
3256                 iattr.ia_gid = make_kgid(&init_user_ns, attr->la_gid);
3257
3258         LINVRNT(osd_invariant(obj));
3259         LASSERT(obj->oo_inode == NULL);
3260         LASSERT(obj->oo_hl_head == NULL);
3261
3262         if (S_ISDIR(mode) && ldiskfs_pdo) {
3263                 obj->oo_hl_head =
3264                         ldiskfs_htree_lock_head_alloc(HTREE_HBITS_DEF);
3265                 if (obj->oo_hl_head == NULL)
3266                         return -ENOMEM;
3267         }
3268
3269         oth = container_of(th, struct osd_thandle, ot_super);
3270         LASSERT(oth->ot_handle->h_transaction != NULL);
3271
3272         if (hint != NULL && hint->dah_parent != NULL &&
3273             !dt_object_remote(hint->dah_parent))
3274                 parent = hint->dah_parent;
3275
3276         /* if a time component is not valid set it to UTIME_OMIT */
3277         if (!(attr->la_valid & LA_CTIME))
3278                 iattr.ia_ctime = omit;
3279         if (!(attr->la_valid & LA_MTIME))
3280                 iattr.ia_mtime = omit;
3281         if (!(attr->la_valid & LA_ATIME))
3282                 iattr.ia_atime = omit;
3283
3284         inode = ldiskfs_create_inode(oth->ot_handle,
3285                                      parent ? osd_dt_obj(parent)->oo_inode :
3286                                               osd_sb(osd)->s_root->d_inode,
3287                                      mode, &iattr);
3288         if (!IS_ERR(inode)) {
3289                 /* Do not update file c/mtime in ldiskfs. */
3290                 inode->i_flags |= S_NOCMTIME;
3291
3292                 /*
3293                  * For new created object, it must be consistent,
3294                  * and it is unnecessary to scrub against it.
3295                  */
3296                 ldiskfs_set_inode_state(inode, LDISKFS_STATE_LUSTRE_NOSCRUB);
3297
3298                 obj->oo_inode = inode;
3299                 result = 0;
3300         } else {
3301                 if (obj->oo_hl_head != NULL) {
3302                         ldiskfs_htree_lock_head_free(obj->oo_hl_head);
3303                         obj->oo_hl_head = NULL;
3304                 }
3305                 result = PTR_ERR(inode);
3306         }
3307         LINVRNT(osd_invariant(obj));
3308         return result;
3309 }
3310
3311 enum {
3312         OSD_NAME_LEN = 255
3313 };
3314
3315 static int osd_mkdir(struct osd_thread_info *info, struct osd_object *obj,
3316                      struct lu_attr *attr,
3317                      struct dt_allocation_hint *hint,
3318                      struct dt_object_format *dof,
3319                      struct thandle *th)
3320 {
3321         int result;
3322         struct osd_thandle *oth;
3323         __u32 mode = (attr->la_mode & (S_IFMT | S_IRWXUGO | S_ISVTX | S_ISGID));
3324
3325         LASSERT(S_ISDIR(attr->la_mode));
3326
3327         oth = container_of(th, struct osd_thandle, ot_super);
3328         LASSERT(oth->ot_handle->h_transaction != NULL);
3329         if (fid_is_namespace_visible(lu_object_fid(&obj->oo_dt.do_lu)))
3330                 obj->oo_dirent_count = 0;
3331         result = osd_mkfile(info, obj, mode, hint, th, attr);
3332
3333         return result;
3334 }
3335
3336 static int osd_mk_index(struct osd_thread_info *info, struct osd_object *obj,
3337                         struct lu_attr *attr,
3338                         struct dt_allocation_hint *hint,
3339                         struct dt_object_format *dof,
3340                         struct thandle *th)
3341 {
3342         int result;
3343         struct osd_thandle *oth;
3344         const struct dt_index_features *feat = dof->u.dof_idx.di_feat;
3345
3346         __u32 mode = (attr->la_mode & (S_IFMT | S_IALLUGO | S_ISVTX));
3347
3348         LASSERT(S_ISREG(attr->la_mode));
3349
3350         oth = container_of(th, struct osd_thandle, ot_super);
3351         LASSERT(oth->ot_handle->h_transaction != NULL);
3352
3353         result = osd_mkfile(info, obj, mode, hint, th, attr);
3354         if (result == 0) {
3355                 LASSERT(obj->oo_inode != NULL);
3356                 if (feat->dif_flags & DT_IND_VARKEY)
3357                         result = iam_lvar_create(obj->oo_inode,
3358                                                  feat->dif_keysize_max,
3359                                                  feat->dif_ptrsize,
3360                                                  feat->dif_recsize_max,
3361                                                  oth->ot_handle);
3362                 else
3363                         result = iam_lfix_create(obj->oo_inode,
3364                                                  feat->dif_keysize_max,
3365                                                  feat->dif_ptrsize,
3366                                                  feat->dif_recsize_max,
3367                                                  oth->ot_handle);
3368         }
3369         return result;
3370 }
3371
3372 static int osd_mkreg(struct osd_thread_info *info, struct osd_object *obj,
3373                      struct lu_attr *attr,
3374                      struct dt_allocation_hint *hint,
3375                      struct dt_object_format *dof,
3376                      struct thandle *th)
3377 {
3378         LASSERT(S_ISREG(attr->la_mode));
3379         return osd_mkfile(info, obj, (attr->la_mode &
3380                          (S_IFMT | S_IALLUGO | S_ISVTX)), hint, th,
3381                           attr);
3382 }
3383
3384 static int osd_mksym(struct osd_thread_info *info, struct osd_object *obj,
3385                      struct lu_attr *attr,
3386                      struct dt_allocation_hint *hint,
3387                      struct dt_object_format *dof,
3388                      struct thandle *th)
3389 {
3390         LASSERT(S_ISLNK(attr->la_mode));
3391         return osd_mkfile(info, obj, (attr->la_mode &
3392                          (S_IFMT | S_IALLUGO | S_ISVTX)), hint, th,
3393                           attr);
3394 }
3395
3396 static int osd_mknod(struct osd_thread_info *info, struct osd_object *obj,
3397                      struct lu_attr *attr,
3398                      struct dt_allocation_hint *hint,
3399                      struct dt_object_format *dof,
3400                      struct thandle *th)
3401 {
3402         umode_t mode = attr->la_mode & (S_IFMT | S_IALLUGO | S_ISVTX);
3403         int result;
3404
3405         LINVRNT(osd_invariant(obj));
3406         LASSERT(obj->oo_inode == NULL);
3407         LASSERT(S_ISCHR(mode) || S_ISBLK(mode) ||
3408                 S_ISFIFO(mode) || S_ISSOCK(mode));
3409
3410         result = osd_mkfile(info, obj, mode, hint, th, attr);
3411         if (result == 0) {
3412                 LASSERT(obj->oo_inode != NULL);
3413                 /*
3414                  * This inode should be marked dirty for i_rdev.  Currently
3415                  * that is done in the osd_attr_init().
3416                  */
3417                 init_special_inode(obj->oo_inode, obj->oo_inode->i_mode,
3418                                    attr->la_rdev);
3419         }
3420         LINVRNT(osd_invariant(obj));
3421         return result;
3422 }
3423
3424 typedef int (*osd_obj_type_f)(struct osd_thread_info *, struct osd_object *,
3425                               struct lu_attr *,
3426                               struct dt_allocation_hint *hint,
3427                               struct dt_object_format *dof,
3428                               struct thandle *);
3429
3430 static osd_obj_type_f osd_create_type_f(enum dt_format_type type)
3431 {
3432         osd_obj_type_f result;
3433
3434         switch (type) {
3435         case DFT_DIR:
3436                 result = osd_mkdir;
3437                 break;
3438         case DFT_REGULAR:
3439                 result = osd_mkreg;
3440                 break;
3441         case DFT_SYM:
3442                 result = osd_mksym;
3443                 break;
3444         case DFT_NODE:
3445                 result = osd_mknod;
3446                 break;
3447         case DFT_INDEX:
3448                 result = osd_mk_index;
3449                 break;
3450
3451         default:
3452                 LBUG();
3453                 break;
3454         }
3455         return result;
3456 }
3457
3458 static void osd_ah_init(const struct lu_env *env, struct dt_allocation_hint *ah,
3459                         struct dt_object *parent, struct dt_object *child,
3460                         umode_t child_mode)
3461 {
3462         LASSERT(ah);
3463
3464         ah->dah_parent = parent;
3465         ah->dah_mode = child_mode;
3466
3467         if (parent != NULL && !dt_object_remote(parent)) {
3468                 /* will help to find FID->ino at dt_insert("..") */
3469                 struct osd_object *pobj = osd_dt_obj(parent);
3470
3471                 osd_idc_find_and_init(env, osd_obj2dev(pobj), pobj);
3472         }
3473 }
3474
3475 static void osd_attr_init(struct osd_thread_info *info, struct osd_object *obj,
3476                           struct lu_attr *attr, struct dt_object_format *dof,
3477                           struct thandle *handle)
3478 {
3479         struct inode *inode = obj->oo_inode;
3480         __u64 valid = attr->la_valid;
3481         int result;
3482
3483         attr->la_valid &= ~(LA_TYPE | LA_MODE);
3484
3485         if (dof->dof_type != DFT_NODE)
3486                 attr->la_valid &= ~LA_RDEV;
3487         if ((valid & LA_ATIME) && (attr->la_atime == inode->i_atime.tv_sec))
3488                 attr->la_valid &= ~LA_ATIME;
3489         if ((valid & LA_CTIME) && (attr->la_ctime == inode->i_ctime.tv_sec))
3490                 attr->la_valid &= ~LA_CTIME;
3491         if ((valid & LA_MTIME) && (attr->la_mtime == inode->i_mtime.tv_sec))
3492                 attr->la_valid &= ~LA_MTIME;
3493
3494         result = osd_quota_transfer(inode, attr, handle);
3495         if (result)
3496                 return;
3497
3498         if (attr->la_valid != 0) {
3499                 result = osd_inode_setattr(info->oti_env, inode, attr);
3500                 /*
3501                  * The osd_inode_setattr() should always succeed here.  The
3502                  * only error that could be returned is EDQUOT when we are
3503                  * trying to change the UID or GID of the inode. However, this
3504                  * should not happen since quota enforcement is no longer
3505                  * enabled on ldiskfs (lquota takes care of it).
3506                  */
3507                 LASSERTF(result == 0, "%d\n", result);
3508                 osd_dirty_inode(inode, I_DIRTY_DATASYNC);
3509         }
3510
3511         attr->la_valid = valid;
3512 }
3513
3514 /**
3515  * Helper function for osd_create()
3516  *
3517  * \retval 0, on success
3518  */
3519 static int __osd_create(struct osd_thread_info *info, struct osd_object *obj,
3520                         struct lu_attr *attr, struct dt_allocation_hint *hint,
3521                         struct dt_object_format *dof, struct thandle *th)
3522 {
3523         int result;
3524         __u32 umask;
3525
3526         osd_trans_exec_op(info->oti_env, th, OSD_OT_CREATE);
3527
3528         /* we drop umask so that permissions we pass are not affected */
3529         umask = current->fs->umask;
3530         current->fs->umask = 0;
3531
3532         result = osd_create_type_f(dof->dof_type)(info, obj, attr, hint, dof,
3533                                                   th);
3534         if (likely(obj->oo_inode != NULL)) {
3535                 LASSERT(obj->oo_inode->i_state & I_NEW);
3536
3537                 /*
3538                  * Unlock the inode before attr initialization to avoid
3539                  * unnecessary dqget operations. LU-6378
3540                  */
3541                 unlock_new_inode(obj->oo_inode);
3542         }
3543
3544         if (likely(result == 0)) {
3545                 osd_attr_init(info, obj, attr, dof, th);
3546                 osd_object_init0(obj);
3547         }
3548
3549         /* restore previous umask value */
3550         current->fs->umask = umask;
3551
3552         osd_trans_exec_check(info->oti_env, th, OSD_OT_CREATE);
3553
3554         return result;
3555 }
3556
3557 /**
3558  * Helper function for osd_create()
3559  *
3560  * \retval 0, on success
3561  */
3562 static int __osd_oi_insert(const struct lu_env *env, struct osd_object *obj,
3563                            const struct lu_fid *fid, struct thandle *th)
3564 {
3565         struct osd_thread_info *info = osd_oti_get(env);
3566         struct osd_inode_id    *id   = &info->oti_id;
3567         struct osd_device      *osd  = osd_obj2dev(obj);
3568         struct osd_thandle     *oh;
3569         int rc;
3570
3571         LASSERT(obj->oo_inode != NULL);
3572
3573         if (CFS_FAIL_CHECK(OBD_FAIL_OSD_OI_ENOSPC))
3574                 return -ENOSPC;
3575
3576         oh = container_of(th, struct osd_thandle, ot_super);
3577         LASSERT(oh->ot_handle);
3578         osd_trans_exec_op(env, th, OSD_OT_INSERT);
3579
3580         osd_id_gen(id, obj->oo_inode->i_ino, obj->oo_inode->i_generation);
3581         rc = osd_oi_insert(info, osd, fid, id, oh->ot_handle,
3582                            OI_CHECK_FLD, NULL);
3583         if (CFS_FAIL_CHECK(OBD_FAIL_OSD_DUPLICATE_MAP) && osd->od_is_ost) {
3584                 struct lu_fid next_fid = *fid;
3585
3586                 /* insert next object in advance, and map to the same inode */
3587                 next_fid.f_oid++;
3588                 if (next_fid.f_oid != 0) {
3589                         osd_trans_exec_op(env, th, OSD_OT_INSERT);
3590                         osd_oi_insert(info, osd, &next_fid, id, oh->ot_handle,
3591                                       OI_CHECK_FLD, NULL);
3592                         osd_trans_exec_check(env, th, OSD_OT_INSERT);
3593                 }
3594         }
3595
3596         osd_trans_exec_check(env, th, OSD_OT_INSERT);
3597
3598         return rc;
3599 }
3600
3601 int osd_fld_lookup(const struct lu_env *env, struct osd_device *osd,
3602                    u64 seq, struct lu_seq_range *range)
3603 {
3604         struct seq_server_site *ss = osd_seq_site(osd);
3605
3606         if (fid_seq_is_idif(seq)) {
3607                 fld_range_set_ost(range);
3608                 range->lsr_index = idif_ost_idx(seq);
3609                 return 0;
3610         }
3611
3612         if (!fid_seq_in_fldb(seq)) {
3613                 fld_range_set_mdt(range);
3614                 if (ss != NULL)
3615                         /*
3616                          * FIXME: If ss is NULL, it suppose not get lsr_index
3617                          * at all
3618                          */
3619                         range->lsr_index = ss->ss_node_id;
3620                 return 0;
3621         }
3622
3623         LASSERT(ss != NULL);
3624         fld_range_set_any(range);
3625         /* OSD will only do local fld lookup */
3626         return fld_local_lookup(env, ss->ss_server_fld, seq, range);
3627 }
3628
3629 static int osd_declare_create(const struct lu_env *env, struct dt_object *dt,
3630                               struct lu_attr *attr,
3631                               struct dt_allocation_hint *hint,
3632                               struct dt_object_format *dof,
3633                               struct thandle *handle)
3634 {
3635         struct osd_thandle *oh;
3636         struct super_block *sb = osd_sb(osd_dev(dt->do_lu.lo_dev));
3637         int credits;
3638         int rc;
3639
3640         ENTRY;
3641
3642         LASSERT(handle != NULL);
3643
3644         oh = container_of(handle, struct osd_thandle, ot_super);
3645         LASSERT(oh->ot_handle == NULL);
3646
3647         /*
3648          * EA object consumes more credits than regular object: osd_mk_index
3649          * vs. osd_mkreg: osd_mk_index will create 2 blocks for root_node and
3650          * leaf_node, could involves the block, block bitmap, groups, GDT
3651          * change for each block, so add 4 * 2 credits in that case.
3652          *
3653          * The default ACL initialization may consume an additional 16 blocks
3654          */
3655         credits = osd_dto_credits_noquota[DTO_OBJECT_CREATE] +
3656                   ((dof->dof_type == DFT_INDEX) ? 4 * 2 : 0);
3657
3658         /**
3659          * While ldiskfs_new_inode() calls ldiskfs_init_acl() we have to add
3660          * credits for possible default ACL creation in new inode
3661          */
3662         if (hint && hint->dah_acl_len)
3663                 credits += osd_calc_bkmap_credits(sb, NULL, 0, -1,
3664                                 (hint->dah_acl_len + sb->s_blocksize - 1) >>
3665                                 sb->s_blocksize_bits);
3666
3667         osd_trans_declare_op(env, oh, OSD_OT_CREATE, credits);
3668
3669         /*
3670          * Reuse idle OI block may cause additional one OI block
3671          * to be changed.