lustre/llite/namei.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see
  20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  30  * Use is subject to license terms.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  */
  36
  37 #include <linux/fs.h>
  38 #include <linux/sched.h>
  39 #include <linux/mm.h>
  40 #include <linux/smp_lock.h>
  41 #include <linux/quotaops.h>
  42 #include <linux/highmem.h>
  43 #include <linux/pagemap.h>
  44
  45 #define DEBUG_SUBSYSTEM S_LLITE
  46
  47 #include <obd_support.h>
  48 #include <lustre_lite.h>
  49 #include <lustre_dlm.h>
  50 #include <linux/lustre_version.h>
  51 #include "llite_internal.h"
  52
  53 /* methods */
  54
  55 int ll_unlock(__u32 mode, struct lustre_handle *lockh)
  56 {
  57         ENTRY;
  58
  59         ldlm_lock_decref(lockh, mode);
  60
  61         RETURN(0);
  62 }
  63
  64 /**
  65  * Flatten 128-bit FID values into a 64-bit value for
  66  * use as an inode number.  For non-IGIF FIDs this
  67  * starts just over 2^32, and continues without conflict
  68  * until 2^64, at which point we wrap the high 32 bits
  69  * of the SEQ into the range where there may not be many
  70  * OID values in use, to minimize the risk of conflict.
  71  *
  72  * The time between re-used inode numbers is very long -
  73  * 2^32 SEQ numbers, or about 2^32 client mounts. */
  74 static inline __u64 fid_flatten(const struct lu_fid *fid)
  75 {
  76         __u64 ino;
  77         __u64 seq;
  78
  79         if (fid_is_igif(fid)) {
  80                 ino = lu_igif_ino(fid);
  81                 RETURN(ino);
  82         }
  83
  84         seq = fid_seq(fid);
  85
  86         ino = (seq << 24) + ((seq >> (64-8)) & 0xffffff0000ULL) + fid_oid(fid);
  87
  88         RETURN(ino ? ino : fid_oid(fid));
  89 }
  90
  91 /**
  92  * map fid to 32 bit value for ino on 32bit systems. */
  93 static inline __u32 fid_flatten32(const struct lu_fid *fid)
  94 {
  95         __u32 ino;
  96         __u64 seq;
  97
  98         if (fid_is_igif(fid)) {
  99                 ino = lu_igif_ino(fid);
 100                 RETURN(ino);
 101         }
 102
 103         seq = fid_seq(fid) - FID_SEQ_START;
 104
 105         /*
 106           map the high bits of the OID into higher bits of the inode number so that
 107           inodes generated at about the same time have a reduced chance of collisions.
 108           This will give a period of 1024 clients and 128 k = 128M inodes without collisions.
 109         */
 110
 111         ino = ((seq & 0x000fffffULL) << 12) + ((seq >> 8) & 0xfffff000) +
 112                (seq >> (64 - (40-8)) & 0xffffff00) +
 113                (fid_oid(fid) & 0xff000fff) + ((fid_oid(fid) & 0x00fff000) << 16);
 114
 115         RETURN(ino ? ino : fid_oid(fid));
 116 }
 117
 118 /**
 119  * for 32 bit inode numbers directly map seq+oid to 32bit number.
 120  */
 121 __u32 ll_fid_build_ino32(const struct ll_fid *fid)
 122 {
 123         RETURN(fid_flatten32((struct lu_fid *)fid));
 124 }
 125
 126 /**
 127  * build inode number from passed @fid */
 128 __u64 ll_fid_build_ino(const struct ll_fid *fid)
 129 {
 130 #if BITS_PER_LONG == 32
 131         RETURN(fid_flatten32((struct lu_fid *)fid));
 132 #else
 133         RETURN(fid_flatten((struct lu_fid *)fid));
 134 #endif
 135 }
 136
 137 __u32 ll_fid_build_gen(struct ll_sb_info *sbi, struct ll_fid *fid)
 138 {
 139         __u32 gen = 0;
 140         ENTRY;
 141
 142         if (fid_is_igif((struct lu_fid*)fid)) {
 143                 gen = lu_igif_gen((struct lu_fid*)fid);
 144         }
 145         RETURN(gen);
 146 }
 147
 148 /* called from iget5_locked->find_inode() under inode_lock spinlock */
 149 static int fid_test_inode(struct inode *inode, void *opaque)
 150 {
 151         struct lustre_md     *md = opaque;
 152         struct lu_fid        *fid = (struct lu_fid*)&md->body->fid1;
 153
 154         if (unlikely(!(md->body->valid & OBD_MD_FLID))) {
 155                 CERROR("MDS body missing FID\n");
 156                 return 0;
 157         }
 158
 159         return fid_seq(ll_inode_lu_fid(inode)) == fid_seq(fid) &&
 160                fid_oid(ll_inode_lu_fid(inode)) == fid_oid(fid);
 161 }
 162
 163 static int fid_set_inode(struct inode *inode, void *opaque)
 164 {
 165         struct lustre_md     *md  = opaque;
 166
 167         *ll_inode_lu_fid(inode) = *((struct lu_fid*)&md->body->fid1);
 168         return 0;
 169 }
 170
 171 struct inode *ll_iget(struct super_block *sb, ino_t hash,
 172                           struct lustre_md *md)
 173 {
 174         struct inode         *inode;
 175         ENTRY;
 176
 177         LASSERT(hash != 0);
 178         inode = iget5_locked(sb, hash, fid_test_inode, fid_set_inode, md);
 179
 180         if (inode) {
 181                 if (inode->i_state & I_NEW) {
 182                         ll_read_inode2(inode, md);
 183                         unlock_new_inode(inode);
 184                 } else {
 185                         if (!(inode->i_state & (I_FREEING | I_CLEAR)))
 186                                 ll_update_inode(inode, md);
 187                 }
 188                 CDEBUG(D_VFSTRACE, "got inode: %lu/%u(%p) for "DFID"\n",
 189                        inode->i_ino, inode->i_generation, inode,
 190                        PFID(ll_inode_lu_fid(inode)));
 191         }
 192
 193         RETURN(inode);
 194 }
 195
 196 static void ll_drop_negative_dentry(struct inode *dir)
 197 {
 198         struct dentry *dentry, *tmp_alias, *tmp_subdir;
 199
 200         spin_lock(&ll_lookup_lock);
 201         spin_lock(&dcache_lock);
 202 restart:
 203         list_for_each_entry_safe(dentry, tmp_alias,
 204                                  &dir->i_dentry,d_alias) {
 205                 if (!list_empty(&dentry->d_subdirs)) {
 206                         struct dentry *child;
 207                         list_for_each_entry_safe(child, tmp_subdir,
 208                                                  &dentry->d_subdirs,
 209                                                  d_child) {
 210                                 /* XXX Print some debug here? */
 211                                 if (!child->d_inode)
 212                                 /* Negative dentry. If we were
 213                                    dropping dcache lock, go
 214                                    throught the list again */
 215                                         if (ll_drop_dentry(child))
 216                                                 goto restart;
 217                         }
 218                 }
 219         }
 220         spin_unlock(&dcache_lock);
 221         spin_unlock(&ll_lookup_lock);
 222 }
 223
 224 int ll_mdc_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
 225                         void *data, int flag)
 226 {
 227         int rc;
 228         struct lustre_handle lockh;
 229         ENTRY;
 230
 231         switch (flag) {
 232         case LDLM_CB_BLOCKING:
 233                 ldlm_lock2handle(lock, &lockh);
 234                 rc = ldlm_cli_cancel(&lockh);
 235                 if (rc < 0) {
 236                         CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
 237                         RETURN(rc);
 238                 }
 239                 break;
 240         case LDLM_CB_CANCELING: {
 241                 struct inode *inode = ll_inode_from_lock(lock);
 242                 __u64 bits = lock->l_policy_data.l_inodebits.bits;
 243                 struct lu_fid *fid;
 244                 ldlm_mode_t mode = lock->l_req_mode;
 245
 246                 /* Invalidate all dentries associated with this inode */
 247                 if (inode == NULL)
 248                         break;
 249
 250                 fid = ll_inode_lu_fid(inode);;
 251
 252                 LASSERT(lock->l_flags & LDLM_FL_CANCELING);
 253                 /* For OPEN locks we differentiate between lock modes - CR, CW. PR - bug 22891 */
 254                 if ((bits & MDS_INODELOCK_LOOKUP) &&
 255                     ll_have_md_lock(inode, MDS_INODELOCK_LOOKUP, LCK_MINMODE))
 256                         bits &= ~MDS_INODELOCK_LOOKUP;
 257                 if ((bits & MDS_INODELOCK_UPDATE) &&
 258                     ll_have_md_lock(inode, MDS_INODELOCK_UPDATE, LCK_MINMODE))
 259                         bits &= ~MDS_INODELOCK_UPDATE;
 260                 if ((bits & MDS_INODELOCK_OPEN) &&
 261                     ll_have_md_lock(inode, MDS_INODELOCK_OPEN, mode))
 262                         bits &= ~MDS_INODELOCK_OPEN;
 263
 264                 if (!fid_res_name_eq(fid, &lock->l_resource->lr_name)) {
 265                         LDLM_ERROR(lock, "data mismatch with ino %lu/%u (%p)",
 266                                    inode->i_ino, inode->i_generation, inode);
 267                 }
 268
 269                 if (bits & MDS_INODELOCK_OPEN) {
 270                         int flags = 0;
 271                         switch (lock->l_req_mode) {
 272                         case LCK_CW:
 273                                 flags = FMODE_WRITE;
 274                                 break;
 275                         case LCK_PR:
 276                                 flags = FMODE_EXEC;
 277                                 if (!FMODE_EXEC)
 278                                         CERROR("open PR lock without FMODE_EXEC\n");
 279                                 break;
 280                         case LCK_CR:
 281                                 flags = FMODE_READ;
 282                                 break;
 283                         default:
 284                                 CERROR("Unexpected lock mode for OPEN lock "
 285                                        "%d, inode %ld\n", lock->l_req_mode,
 286                                        inode->i_ino);
 287                         }
 288                         ll_mdc_real_close(inode, flags);
 289                 }
 290
 291                 if (bits & MDS_INODELOCK_UPDATE)
 292                         clear_bit(LLI_F_HAVE_MDS_SIZE_LOCK,
 293                                   &(ll_i2info(inode)->lli_flags));
 294
 295                 if (S_ISDIR(inode->i_mode) &&
 296                      (bits & MDS_INODELOCK_UPDATE)) {
 297                         CDEBUG(D_INODE, "invalidating inode %lu\n",
 298                                inode->i_ino);
 299                         truncate_inode_pages(inode->i_mapping, 0);
 300                         ll_drop_negative_dentry(inode);
 301                         inode->i_version++; /* XXX: remove with inode version*/
 302                 }
 303
 304                 if (inode->i_sb->s_root &&
 305                     inode != inode->i_sb->s_root->d_inode &&
 306                     (bits & MDS_INODELOCK_LOOKUP))
 307                         ll_unhash_aliases(inode);
 308                 iput(inode);
 309                 break;
 310         }
 311         default:
 312                 LBUG();
 313         }
 314
 315         RETURN(0);
 316 }
 317
 318 int ll_mdc_cancel_unused(struct lustre_handle *conn, struct inode *inode,
 319                          int flags, void *opaque)
 320 {
 321         struct ldlm_res_id res_id;
 322         struct obd_device *obddev = class_conn2obd(conn);
 323         ENTRY;
 324
 325         fid_build_reg_res_name(ll_inode_lu_fid(inode), &res_id);
 326         RETURN(ldlm_cli_cancel_unused(obddev->obd_namespace, &res_id, flags,
 327                                       opaque));
 328 }
 329
 330 /* Pack the required supplementary groups into the supplied groups array.
 331  * If we don't need to use the groups from the target inode(s) then we
 332  * instead pack one or more groups from the user's supplementary group
 333  * array in case it might be useful.  Not needed if doing an MDS-side upcall. */
 334 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
 335 {
 336         int i;
 337
 338         LASSERT(i1 != NULL);
 339         LASSERT(suppgids != NULL);
 340
 341         if (in_group_p(i1->i_gid))
 342                 suppgids[0] = i1->i_gid;
 343         else
 344                 suppgids[0] = -1;
 345
 346         if (i2) {
 347                 if (in_group_p(i2->i_gid))
 348                         suppgids[1] = i2->i_gid;
 349                 else
 350                         suppgids[1] = -1;
 351         } else {
 352                 suppgids[1] = -1;
 353         }
 354
 355         for (i = 0; i < current_ngroups; i++) {
 356                 if (suppgids[0] == -1) {
 357                         if (current_groups[i] != suppgids[1])
 358                                 suppgids[0] = current_groups[i];
 359                         continue;
 360                 }
 361                 if (suppgids[1] == -1) {
 362                         if (current_groups[i] != suppgids[0])
 363                                 suppgids[1] = current_groups[i];
 364                         continue;
 365                 }
 366                 break;
 367         }
 368 }
 369
 370 int ll_prepare_mdc_op_data(struct mdc_op_data *op_data, struct inode *i1,
 371                             struct inode *i2, const char *name, int namelen,
 372                             int mode, void *data)
 373 {
 374         LASSERT(i1);
 375
 376         if (namelen > ll_i2sbi(i1)->ll_namelen)
 377                 return -ENAMETOOLONG;
 378         ll_i2gids(op_data->suppgids, i1, i2);
 379         ll_inode2fid(&op_data->fid1, i1);
 380
 381         if (i2)
 382                 ll_inode2fid(&op_data->fid2, i2);
 383         else
 384                 memset(&op_data->fid2, 0, sizeof(op_data->fid2));
 385
 386         op_data->name = name;
 387         op_data->namelen = namelen;
 388         op_data->create_mode = mode;
 389         op_data->mod_time = CURRENT_SECONDS;
 390         op_data->data = data;
 391
 392         return 0;
 393 }
 394
 395 static void ll_d_add(struct dentry *de, struct inode *inode)
 396 {
 397         CDEBUG(D_DENTRY, "adding inode %p to dentry %p\n", inode, de);
 398         /* d_instantiate */
 399         if (!list_empty(&de->d_alias)) {
 400                 spin_unlock(&dcache_lock);
 401                 CERROR("dentry %.*s %p alias next %p, prev %p\n",
 402                        de->d_name.len, de->d_name.name, de,
 403                        de->d_alias.next, de->d_alias.prev);
 404                 LBUG();
 405         }
 406         if (inode)
 407                 list_add(&de->d_alias, &inode->i_dentry);
 408         de->d_inode = inode;
 409
 410         /* d_rehash */
 411         if (!d_unhashed(de)) {
 412                 spin_unlock(&dcache_lock);
 413                 CERROR("dentry %.*s %p hash next %p\n",
 414                        de->d_name.len, de->d_name.name, de, de->d_hash.next);
 415                 LBUG();
 416         }
 417         d_rehash_cond(de, 0);
 418 }
 419
 420 /* Search "inode"'s alias list for a dentry that has the same name and parent
 421  * as de.  If found, return it.  If not found, return de.
 422  * Lustre can't use d_add_unique because don't unhash aliases for directory
 423  * in ll_revalidate_it.  After revaliadate inode will be have hashed aliases
 424  * and it triggers BUG_ON in d_instantiate_unique (bug #10954).
 425  */
 426 static struct dentry *ll_find_alias(struct inode *inode, struct dentry *de)
 427 {
 428         struct list_head *tmp;
 429         struct dentry *dentry;
 430         struct dentry *last_discon = NULL;
 431
 432         spin_lock(&ll_lookup_lock);
 433         spin_lock(&dcache_lock);
 434         list_for_each(tmp, &inode->i_dentry) {
 435                 dentry = list_entry(tmp, struct dentry, d_alias);
 436
 437                 /* We are called here with 'de' already on the aliases list. */
 438                 if (unlikely(dentry == de)) {
 439                         CERROR("whoops\n");
 440                         continue;
 441                 }
 442
 443                 if (dentry->d_flags & DCACHE_DISCONNECTED) {
 444                         /* LASSERT(last_discon == NULL); see bug 20055 */
 445                         last_discon = dentry;
 446                         continue;
 447                 }
 448
 449                 if (dentry->d_parent != de->d_parent)
 450                         continue;
 451
 452                 if (dentry->d_name.hash != de->d_name.hash)
 453                         continue;
 454
 455                 if (dentry->d_name.len != de->d_name.len)
 456                         continue;
 457
 458                 if (memcmp(dentry->d_name.name, de->d_name.name,
 459                            de->d_name.len) != 0)
 460                         continue;
 461
 462                 dget_locked(dentry);
 463                 lock_dentry(dentry);
 464                 __d_drop(dentry);
 465                 unlock_dentry(dentry);
 466                 ll_dops_init(dentry, 0);
 467                 d_rehash_cond(dentry, 0); /* avoid taking dcache_lock inside */
 468                 spin_unlock(&dcache_lock);
 469                 spin_unlock(&ll_lookup_lock);
 470                 iput(inode);
 471                 CDEBUG(D_DENTRY, "alias dentry %.*s (%p) parent %p inode %p "
 472                        "refc %d\n", de->d_name.len, de->d_name.name, de,
 473                        de->d_parent, de->d_inode, atomic_read(&de->d_count));
 474                 return dentry;
 475         }
 476
 477         if (last_discon) {
 478                 CDEBUG(D_DENTRY, "Reuse disconnected dentry %p inode %p "
 479                         "refc %d\n", last_discon, last_discon->d_inode,
 480                         atomic_read(&last_discon->d_count));
 481                 dget_locked(last_discon);
 482                 last_discon->d_flags |= DCACHE_LUSTRE_INVALID;
 483                 spin_unlock(&dcache_lock);
 484                 spin_unlock(&ll_lookup_lock);
 485                 ll_dops_init(last_discon, 1);
 486                 d_rehash(de);
 487                 d_move(last_discon, de);
 488                 iput(inode);
 489                 return last_discon;
 490         }
 491
 492         de->d_flags |= DCACHE_LUSTRE_INVALID;
 493         ll_d_add(de, inode);
 494
 495         spin_unlock(&dcache_lock);
 496         spin_unlock(&ll_lookup_lock);
 497
 498         return de;
 499 }
 500
 501 int lookup_it_finish(struct ptlrpc_request *request, int offset,
 502                      struct lookup_intent *it, void *data)
 503 {
 504         struct it_cb_data *icbd = data;
 505         struct dentry **de = icbd->icbd_childp;
 506         struct inode *parent = icbd->icbd_parent;
 507         struct ll_sb_info *sbi = ll_i2sbi(parent);
 508         struct inode *inode = NULL;
 509         int rc;
 510         ENTRY;
 511
 512         /* NB 1 request reference will be taken away by ll_intent_lock()
 513          * when I return */
 514         if (!it_disposition(it, DISP_LOOKUP_NEG)) {
 515                 struct dentry *save = *de;
 516                 __u32 bits;
 517
 518                 rc = ll_prep_inode(sbi->ll_osc_exp, &inode, request, offset,
 519                                    (*de)->d_sb);
 520                 if (rc)
 521                         RETURN(rc);
 522
 523                 CDEBUG(D_DLMTRACE, "setting l_data to inode %p (%lu/%u)\n",
 524                        inode, inode->i_ino, inode->i_generation);
 525                 mdc_set_lock_data(&it->d.lustre.it_lock_handle, inode, &bits);
 526
 527                 /* We used to query real size from OSTs here, but actually
 528                    this is not needed. For stat() calls size would be updated
 529                    from subsequent do_revalidate()->ll_inode_revalidate_it() in
 530                    2.4 and
 531                    vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
 532                    Everybody else who needs correct file size would call
 533                    ll_glimpse_size or some equivalent themselves anyway.
 534                    Also see bug 7198. */
 535
 536                 ll_dops_init(*de, 1);
 537                 *de = ll_find_alias(inode, *de);
 538                 if (*de != save) {
 539                         struct ll_dentry_data *lld = ll_d2d(*de);
 540
 541                         /* just make sure the ll_dentry_data is ready */
 542                         if (unlikely(lld == NULL)) {
 543                                 ll_set_dd(*de);
 544                                 lld = ll_d2d(*de);
 545                                 if (likely(lld != NULL))
 546                                         lld->lld_sa_generation = 0;
 547                         }
 548                 }
 549                 /* we have lookup look - unhide dentry */
 550                 if (bits & MDS_INODELOCK_LOOKUP) {
 551                         lock_dentry(*de);
 552                         (*de)->d_flags &= ~(DCACHE_LUSTRE_INVALID);
 553                         unlock_dentry(*de);
 554                 }
 555         } else {
 556                 ll_dops_init(*de, 1);
 557                 /* Check that parent has UPDATE lock. If there is none, we
 558                    cannot afford to hash this dentry (done by ll_d_add) as it
 559                    might get picked up later when UPDATE lock will appear */
 560                 if (ll_have_md_lock(parent, MDS_INODELOCK_UPDATE, LCK_MINMODE)) {
 561                         spin_lock(&dcache_lock);
 562                         ll_d_add(*de, inode);
 563                         spin_unlock(&dcache_lock);
 564                 } else {
 565                         /* negative lookup - and don't have update lock to
 566                          * parent */
 567                         lock_dentry(*de);
 568                         (*de)->d_flags |= DCACHE_LUSTRE_INVALID;
 569                         unlock_dentry(*de);
 570
 571                         (*de)->d_inode = NULL;
 572                         /* We do not want to hash the dentry if don`t have a
 573                          * lock, but if this dentry is later used in d_move,
 574                          * we'd hit uninitialised list head d_hash, so we just
 575                          * do this to init d_hash field but leave dentry
 576                          * unhashed. (bug 10796). */
 577                         d_rehash(*de);
 578                         d_drop(*de);
 579                 }
 580         }
 581
 582         RETURN(0);
 583 }
 584
 585 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
 586                                    struct lookup_intent *it, int lookup_flags)
 587 {
 588         struct dentry *save = dentry, *retval;
 589         struct mdc_op_data op_data = { { 0 } };
 590         struct it_cb_data icbd;
 591         struct ptlrpc_request *req = NULL;
 592         struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
 593         int rc, first = 0;
 594         ENTRY;
 595
 596         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 597                dentry->d_name.len, dentry->d_name.name, parent->i_ino,
 598                parent->i_generation, parent, LL_IT2STR(it));
 599
 600         if (d_mountpoint(dentry))
 601                 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
 602
 603         ll_frob_intent(&it, &lookup_it);
 604
 605         /* As do_lookup is called before follow_mount, root dentry may be left
 606          * not valid, revalidate it here. */
 607         if (parent->i_sb->s_root && (parent->i_sb->s_root->d_inode == parent) &&
 608             (it->it_op & (IT_OPEN | IT_CREAT))) {
 609                 rc = ll_inode_revalidate_it(parent->i_sb->s_root, it);
 610                 if (rc)
 611                         RETURN(ERR_PTR(rc));
 612         }
 613
 614         if (it->it_op == IT_GETATTR) {
 615                 first = ll_statahead_enter(parent, &dentry, 1);
 616                 if (first >= 0) {
 617                         ll_statahead_exit(parent, dentry, first);
 618                         if (first == 1)
 619                                 RETURN(retval = dentry);
 620                 }
 621         }
 622
 623         icbd.icbd_parent = parent;
 624         icbd.icbd_childp = &dentry;
 625
 626         rc = ll_prepare_mdc_op_data(&op_data, parent, NULL, dentry->d_name.name,
 627                                     dentry->d_name.len, lookup_flags, NULL);
 628         if (rc)
 629                 RETURN(ERR_PTR(rc));
 630
 631         it->it_create_mode &= ~current->fs->umask;
 632
 633         rc = mdc_intent_lock(ll_i2mdcexp(parent), &op_data, NULL, 0, it,
 634                              lookup_flags, &req, ll_mdc_blocking_ast, 0);
 635
 636         if (rc < 0)
 637                 GOTO(out, retval = ERR_PTR(rc));
 638
 639         rc = lookup_it_finish(req, DLM_REPLY_REC_OFF, it, &icbd);
 640         if (rc != 0) {
 641                 ll_intent_release(it);
 642                 GOTO(out, retval = ERR_PTR(rc));
 643         }
 644
 645         if (first == -EEXIST)
 646                 ll_statahead_mark(parent, dentry);
 647
 648         if ((it->it_op & IT_OPEN) && dentry->d_inode &&
 649             !S_ISREG(dentry->d_inode->i_mode) &&
 650             !S_ISDIR(dentry->d_inode->i_mode)) {
 651                 ll_release_openhandle(dentry, it);
 652         }
 653         ll_lookup_finish_locks(it, dentry);
 654
 655         if (dentry == save)
 656                 GOTO(out, retval = NULL);
 657         else
 658                 GOTO(out, retval = dentry);
 659  out:
 660         if (req)
 661                 ptlrpc_req_finished(req);
 662         return retval;
 663 }
 664
 665 #ifdef HAVE_VFS_INTENT_PATCHES
 666 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 667                                    struct nameidata *nd)
 668 {
 669         struct dentry *de;
 670         ENTRY;
 671
 672         if (nd && nd->flags & LOOKUP_LAST && !(nd->flags & LOOKUP_LINK_NOTLAST))
 673                 de = ll_lookup_it(parent, dentry, &nd->intent, nd->flags);
 674         else
 675                 de = ll_lookup_it(parent, dentry, NULL, 0);
 676
 677         RETURN(de);
 678 }
 679 #else
 680 struct lookup_intent *ll_convert_intent(struct open_intent *oit,
 681                                         int lookup_flags)
 682 {
 683         struct lookup_intent *it;
 684
 685         OBD_ALLOC(it, sizeof(*it));
 686         if (!it)
 687                 return ERR_PTR(-ENOMEM);
 688
 689         if (lookup_flags & LOOKUP_OPEN) {
 690                 it->it_op = IT_OPEN;
 691                 if (lookup_flags & LOOKUP_CREATE)
 692                         it->it_op |= IT_CREAT;
 693                 it->it_create_mode = oit->create_mode;
 694                 it->it_flags = oit->flags;
 695         } else {
 696                 it->it_op = IT_GETATTR;
 697         }
 698
 699 #ifndef HAVE_FILE_IN_STRUCT_INTENT
 700                 /* Since there is no way to pass our intent to ll_file_open,
 701                  * just check the file is there. Actual open will be done
 702                  * in ll_file_open */
 703                 if (it->it_op & IT_OPEN)
 704                         it->it_op = IT_LOOKUP;
 705 #endif
 706
 707         return it;
 708 }
 709
 710 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 711                                    struct nameidata *nd)
 712 {
 713         struct dentry *de;
 714         ENTRY;
 715
 716         if (nd && !(nd->flags & (LOOKUP_CONTINUE|LOOKUP_PARENT))) {
 717                 struct lookup_intent *it;
 718
 719 #if defined(HAVE_FILE_IN_STRUCT_INTENT) && (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 720                 /* Did we came here from failed revalidate just to propagate
 721                  * its error? */
 722                 if (nd->flags & LOOKUP_OPEN)
 723                         if (IS_ERR(nd->intent.open.file))
 724                                 RETURN((struct dentry *)nd->intent.open.file);
 725 #endif
 726
 727                 if (ll_d2d(dentry) && ll_d2d(dentry)->lld_it) {
 728                         it = ll_d2d(dentry)->lld_it;
 729                         ll_d2d(dentry)->lld_it = NULL;
 730                 } else {
 731                         if ((nd->flags & LOOKUP_CREATE ) && !(nd->flags & LOOKUP_OPEN)) {
 732                                 /* We are sure this is new dentry, so we need to create
 733                                    our private data and set the dentry ops */
 734                                 ll_dops_init(dentry, 1);
 735                                 RETURN(NULL);
 736                         }
 737                         it = ll_convert_intent(&nd->intent.open, nd->flags);
 738                         if (IS_ERR(it))
 739                                 RETURN((struct dentry *)it);
 740                 }
 741
 742                 de = ll_lookup_it(parent, dentry, it, nd->flags);
 743                 if (de)
 744                         dentry = de;
 745                 if ((nd->flags & LOOKUP_OPEN) && !IS_ERR(dentry)) { /* Open */
 746                         if (dentry->d_inode &&
 747                             it_disposition(it, DISP_OPEN_OPEN)) { /* nocreate */
 748 #ifdef HAVE_FILE_IN_STRUCT_INTENT
 749                                 if (S_ISFIFO(dentry->d_inode->i_mode)) {
 750                                         // We cannot call open here as it would
 751                                         // deadlock.
 752                                         ptlrpc_req_finished(
 753                                                        (struct ptlrpc_request *)
 754                                                           it->d.lustre.it_data);
 755                                 } else {
 756 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 757 /* 2.6.1[456] have a bug in open_namei() that forgets to check
 758  * nd->intent.open.file for error, so we need to return it as lookup's result
 759  * instead */
 760                                         struct file *filp;
 761                                         nd->intent.open.file->private_data = it;
 762                                         filp =lookup_instantiate_filp(nd,dentry,
 763                                                                       NULL);
 764                                         if (IS_ERR(filp)) {
 765                                                 if (de)
 766                                                         dput(de);
 767                                                 de = (struct dentry *) filp;
 768                                         }
 769 #else
 770                                         nd->intent.open.file->private_data = it;
 771                                         (void)lookup_instantiate_filp(nd,dentry,
 772                                                                       NULL);
 773 #endif
 774
 775                                 }
 776 #else /* HAVE_FILE_IN_STRUCT_INTENT */
 777                                 /* Release open handle as we have no way to
 778                                  * pass it to ll_file_open */
 779                                 ll_release_openhandle(dentry, it);
 780 #endif /* HAVE_FILE_IN_STRUCT_INTENT */
 781                         } else if (it_disposition(it, DISP_OPEN_CREATE)) {
 782                                 // XXX This can only reliably work on assumption
 783                                 // that there are NO hashed negative dentries.
 784                                 ll_d2d(dentry)->lld_it = it;
 785                                 it = NULL; /* Will be freed in ll_create_nd */
 786                                 /* We absolutely depend on ll_create_nd to be
 787                                  * called to not leak this intent and possible
 788                                  * data attached to it */
 789                         }
 790                 }
 791
 792                 if (it) {
 793                         ll_intent_release(it);
 794                         OBD_FREE(it, sizeof(*it));
 795                 }
 796         } else {
 797                 de = ll_lookup_it(parent, dentry, NULL, 0);
 798         }
 799
 800         RETURN(de);
 801 }
 802 #endif
 803
 804 /* We depend on "mode" being set with the proper file type/umask by now */
 805 static struct inode *ll_create_node(struct inode *dir, const char *name,
 806                                     int namelen, const void *data, int datalen,
 807                                     int mode, __u64 extra,
 808                                     struct lookup_intent *it)
 809 {
 810         struct inode *inode = NULL;
 811         struct ptlrpc_request *request = NULL;
 812         struct ll_sb_info *sbi = ll_i2sbi(dir);
 813         int rc;
 814         ENTRY;
 815
 816         LASSERT(it && it->d.lustre.it_disposition);
 817
 818         LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
 819         request = it->d.lustre.it_data;
 820         it_clear_disposition(it, DISP_ENQ_CREATE_REF);
 821         rc = ll_prep_inode(sbi->ll_osc_exp, &inode, request, DLM_REPLY_REC_OFF,
 822                            dir->i_sb);
 823         if (rc)
 824                 GOTO(out, inode = ERR_PTR(rc));
 825
 826         LASSERT(list_empty(&inode->i_dentry));
 827
 828         /* We asked for a lock on the directory, but were granted a
 829          * lock on the inode.  Since we finally have an inode pointer,
 830          * stuff it in the lock. */
 831         CDEBUG(D_DLMTRACE, "setting l_ast_data to inode %p (%lu/%u)\n",
 832                inode, inode->i_ino, inode->i_generation);
 833         mdc_set_lock_data(&it->d.lustre.it_lock_handle, inode, NULL);
 834         EXIT;
 835  out:
 836         ptlrpc_req_finished(request);
 837         return inode;
 838 }
 839
 840 /*
 841  * By the time this is called, we already have created the directory cache
 842  * entry for the new file, but it is so far negative - it has no inode.
 843  *
 844  * We defer creating the OBD object(s) until open, to keep the intent and
 845  * non-intent code paths similar, and also because we do not have the MDS
 846  * inode number before calling ll_create_node() (which is needed for LOV),
 847  * so we would need to do yet another RPC to the MDS to store the LOV EA
 848  * data on the MDS.  If needed, we would pass the PACKED lmm as data and
 849  * lmm_size in datalen (the MDS still has code which will handle that).
 850  *
 851  * If the create succeeds, we fill in the inode information
 852  * with d_instantiate().
 853  */
 854 static int ll_create_it(struct inode *dir, struct dentry *dentry, int mode,
 855                         struct lookup_intent *it)
 856 {
 857         struct inode *inode;
 858         struct ptlrpc_request *request = it->d.lustre.it_data;
 859         int rc = 0;
 860         ENTRY;
 861
 862         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 863                dentry->d_name.len, dentry->d_name.name, dir->i_ino,
 864                dir->i_generation, dir, LL_IT2STR(it));
 865
 866         rc = it_open_error(DISP_OPEN_CREATE, it);
 867         if (rc)
 868                 RETURN(rc);
 869
 870         mdc_store_inode_generation(request, DLM_INTENT_REC_OFF,
 871                                    DLM_REPLY_REC_OFF);
 872         inode = ll_create_node(dir, dentry->d_name.name, dentry->d_name.len,
 873                                NULL, 0, mode, 0, it);
 874         if (IS_ERR(inode)) {
 875                 RETURN(PTR_ERR(inode));
 876         }
 877
 878         d_instantiate(dentry, inode);
 879         /* Negative dentry may be unhashed if parent does not have UPDATE lock,
 880          * but some callers, e.g. do_coredump, expect dentry to be hashed after
 881          * successful create. Hash it here. */
 882         spin_lock(&dcache_lock);
 883         if (d_unhashed(dentry))
 884                 d_rehash_cond(dentry, 0);
 885         spin_unlock(&dcache_lock);
 886         RETURN(0);
 887 }
 888
 889 static void ll_update_times(struct ptlrpc_request *request, int offset,
 890                             struct inode *inode)
 891 {
 892         struct mds_body *body = lustre_msg_buf(request->rq_repmsg, offset,
 893                                                sizeof(*body));
 894         LASSERT(body);
 895
 896         if (body->valid & OBD_MD_FLMTIME &&
 897             body->mtime > LTIME_S(inode->i_mtime)) {
 898                 CDEBUG(D_INODE, "setting ino %lu mtime from %lu to "LPU64"\n",
 899                        inode->i_ino, LTIME_S(inode->i_mtime), body->mtime);
 900                 LTIME_S(inode->i_mtime) = body->mtime;
 901         }
 902         if (body->valid & OBD_MD_FLCTIME &&
 903             body->ctime > LTIME_S(inode->i_ctime))
 904                 LTIME_S(inode->i_ctime) = body->ctime;
 905 }
 906
 907 static int ll_new_node(struct inode *dir, struct qstr *name,
 908                        const char *tgt, int mode,
 909                        int rdev, struct dentry *dchild)
 910 {
 911         struct ptlrpc_request *request = NULL;
 912         struct inode *inode = NULL;
 913         struct ll_sb_info *sbi = ll_i2sbi(dir);
 914         struct mdc_op_data op_data = { { 0 } };
 915         int tgt_len = 0;
 916         int err;
 917
 918         ENTRY;
 919         if (unlikely(tgt != NULL))
 920                 tgt_len = strlen(tgt)+1;
 921
 922         err = ll_prepare_mdc_op_data(&op_data, dir, NULL, name->name,
 923                                      name->len, 0, NULL);
 924         if (err)
 925                 GOTO(err_exit, err);
 926
 927         err = mdc_create(sbi->ll_mdc_exp, &op_data, tgt, tgt_len,
 928                          mode, cfs_curproc_fsuid(), cfs_curproc_fsgid(),
 929                          cfs_curproc_cap_pack(), rdev, &request);
 930         if (err)
 931                 GOTO(err_exit, err);
 932
 933         ll_update_times(request, REPLY_REC_OFF, dir);
 934
 935         if (dchild) {
 936                 err = ll_prep_inode(sbi->ll_osc_exp, &inode, request,
 937                                     REPLY_REC_OFF, dchild->d_sb);
 938                 if (err)
 939                      GOTO(err_exit, err);
 940
 941                 d_drop(dchild);
 942                 d_instantiate(dchild, inode);
 943                 EXIT;
 944         }
 945 err_exit:
 946         ptlrpc_req_finished(request);
 947
 948         return err;
 949 }
 950
 951
 952 static int ll_mknod_generic(struct inode *dir, struct qstr *name, int mode,
 953                             unsigned rdev, struct dentry *dchild)
 954 {
 955         int err;
 956         ENTRY;
 957
 958         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p) mode %o dev %x\n",
 959                name->len, name->name, dir->i_ino, dir->i_generation, dir,
 960                mode, rdev);
 961
 962         mode &= ~current->fs->umask;
 963
 964         switch (mode & S_IFMT) {
 965         case 0:
 966                 mode |= S_IFREG; /* for mode = 0 case, fallthrough */
 967         case S_IFREG:
 968         case S_IFCHR:
 969         case S_IFBLK:
 970         case S_IFIFO:
 971         case S_IFSOCK:
 972                 err = ll_new_node(dir, name, NULL, mode, rdev, dchild);
 973                 break;
 974         case S_IFDIR:
 975                 err = -EPERM;
 976                 break;
 977         default:
 978                 err = -EINVAL;
 979         }
 980         RETURN(err);
 981 }
 982
 983 #ifndef HAVE_VFS_INTENT_PATCHES
 984 static int ll_create_nd(struct inode *dir, struct dentry *dentry, int mode, struct nameidata *nd)
 985 {
 986         struct lookup_intent *it = ll_d2d(dentry)->lld_it;
 987         int rc;
 988
 989         if (!it)
 990                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
 991
 992         ll_d2d(dentry)->lld_it = NULL;
 993
 994         /* Was there an error? Propagate it! */
 995         if (it->d.lustre.it_status) {
 996                 rc = it->d.lustre.it_status;
 997                 goto out;
 998         }
 999
1000         rc = ll_create_it(dir, dentry, mode, it);
1001 #ifdef HAVE_FILE_IN_STRUCT_INTENT
1002         if (nd && (nd->flags & LOOKUP_OPEN) && dentry->d_inode) { /* Open */
1003                 nd->intent.open.file->private_data = it;
1004                 lookup_instantiate_filp(nd, dentry, NULL);
1005         }
1006 #else
1007         ll_release_openhandle(dentry,it);
1008 #endif
1009
1010 out:
1011         ll_intent_release(it);
1012         OBD_FREE(it, sizeof(*it));
1013
1014         return rc;
1015 }
1016 #else
1017 static int ll_create_nd(struct inode *dir, struct dentry *dentry, int mode, struct nameidata *nd)
1018 {
1019
1020         if (!nd || !nd->intent.d.lustre.it_disposition)
1021                 /* No saved request? Just mknod the file */
1022                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
1023
1024         return ll_create_it(dir, dentry, mode, &nd->intent);
1025 }
1026 #endif
1027
1028 static int ll_symlink_generic(struct inode *dir, struct qstr *name,
1029                               const char *tgt, struct dentry *dchild)
1030 {
1031         int err;
1032         ENTRY;
1033
1034         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),target=%.*s\n",
1035                name->len, name->name, dir->i_ino, dir->i_generation,
1036                dir, 3000, tgt);
1037
1038         err = ll_new_node(dir, name, (char *)tgt, S_IFLNK | S_IRWXUGO,
1039                           0, dchild);
1040         RETURN(err);
1041 }
1042
1043 static int ll_link_generic(struct inode *src,  struct inode *dir,
1044                            struct qstr *name, struct dentry *dchild)
1045 {
1046         struct ptlrpc_request *request = NULL;
1047         struct mdc_op_data op_data = { { 0 } };
1048         int err;
1049         struct ll_sb_info *sbi = ll_i2sbi(dir);
1050
1051         ENTRY;
1052         CDEBUG(D_VFSTRACE,
1053                "VFS Op: inode=%lu/%u(%p), dir=%lu/%u(%p), target=%.*s\n",
1054                src->i_ino, src->i_generation, src, dir->i_ino,
1055                dir->i_generation, dir, name->len, name->name);
1056
1057         err = ll_prepare_mdc_op_data(&op_data, src, dir, name->name,
1058                                      name->len, 0, NULL);
1059         if (err)
1060                 GOTO(out, err);
1061         err = mdc_link(sbi->ll_mdc_exp, &op_data, &request);
1062         if (err)
1063                GOTO(out, err);
1064
1065         if (dchild) {
1066                 d_drop(dchild);
1067         }
1068         ll_update_times(request, REPLY_REC_OFF, dir);
1069
1070         EXIT;
1071 out:
1072         ptlrpc_req_finished(request);
1073         RETURN(err);
1074 }
1075
1076 static int ll_mkdir_generic(struct inode *dir, struct qstr *name, int mode,
1077                             struct dentry *dchild)
1078
1079 {
1080         int err;
1081
1082         ENTRY;
1083         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1084                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1085
1086         mode = (mode & (S_IRWXUGO|S_ISVTX) & ~current->fs->umask) | S_IFDIR;
1087         err = ll_new_node(dir, name, NULL, mode, 0, dchild);
1088
1089         RETURN(err);
1090 }
1091
1092 /* Try to find the child dentry by its name.
1093    If found, put the result fid into @fid. */
1094 static void ll_get_child_fid(struct inode * dir, struct qstr *name,
1095                              struct ll_fid *fid)
1096 {
1097         struct dentry *parent, *child;
1098
1099         parent = list_entry(dir->i_dentry.next, struct dentry, d_alias);
1100         child = d_lookup(parent, name);
1101         if (child) {
1102                 if (child->d_inode)
1103                         ll_inode2fid(fid, child->d_inode);
1104                 dput(child);
1105         }
1106 }
1107
1108 static int ll_rmdir_generic(struct inode *dir, struct dentry *dparent,
1109                             struct qstr *name)
1110 {
1111         struct ptlrpc_request *request = NULL;
1112         struct mdc_op_data op_data = { { 0 } };
1113         struct dentry *dentry;
1114         int rc;
1115         ENTRY;
1116         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1117                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1118
1119         /* Check if we have something mounted at the dir we are going to delete
1120          * In such a case there would always be dentry present. */
1121         if (dparent) {
1122                 dentry = d_lookup(dparent, name);
1123                 if (dentry) {
1124                         int mounted = d_mountpoint(dentry);
1125                         dput(dentry);
1126                         if (mounted)
1127                                 GOTO(out, rc = -EBUSY);
1128                 }
1129         }
1130
1131         rc = ll_prepare_mdc_op_data(&op_data, dir, NULL, name->name,
1132                                     name->len, S_IFDIR, NULL);
1133         if (rc)
1134                 GOTO(out, rc);
1135
1136         ll_get_child_fid(dir, name, &op_data.fid3);
1137         rc = mdc_unlink(ll_i2sbi(dir)->ll_mdc_exp, &op_data, &request);
1138         if (rc)
1139                 GOTO(out, rc);
1140         ll_update_times(request, REPLY_REC_OFF, dir);
1141
1142         EXIT;
1143 out:
1144         ptlrpc_req_finished(request);
1145         return(rc);
1146 }
1147
1148 int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir)
1149 {
1150         struct mds_body *body;
1151         struct lov_mds_md *eadata;
1152         struct lov_stripe_md *lsm = NULL;
1153         struct obd_trans_info oti = { 0 };
1154         struct obdo *oa;
1155         int rc;
1156         ENTRY;
1157
1158         /* req is swabbed so this is safe */
1159         body = lustre_msg_buf(request->rq_repmsg, REPLY_REC_OFF, sizeof(*body));
1160
1161         if (!(body->valid & OBD_MD_FLEASIZE))
1162                 RETURN(0);
1163
1164         if (body->eadatasize == 0) {
1165                 CERROR("OBD_MD_FLEASIZE set but eadatasize zero\n");
1166                 GOTO(out, rc = -EPROTO);
1167         }
1168
1169         /* The MDS sent back the EA because we unlinked the last reference
1170          * to this file. Use this EA to unlink the objects on the OST.
1171          * It's opaque so we don't swab here; we leave it to obd_unpackmd() to
1172          * check it is complete and sensible. */
1173         eadata = lustre_swab_repbuf(request, REPLY_REC_OFF + 1,
1174                                     body->eadatasize, NULL);
1175         LASSERT(eadata != NULL);
1176         if (eadata == NULL) {
1177                 CERROR("Can't unpack MDS EA data\n");
1178                 GOTO(out, rc = -EPROTO);
1179         }
1180
1181         rc = obd_unpackmd(ll_i2obdexp(dir), &lsm, eadata, body->eadatasize);
1182         if (rc < 0) {
1183                 CERROR("obd_unpackmd: %d\n", rc);
1184                 GOTO(out, rc);
1185         }
1186         LASSERT(rc >= sizeof(*lsm));
1187
1188         rc = obd_checkmd(ll_i2obdexp(dir), ll_i2mdcexp(dir), lsm);
1189         if (rc)
1190                 GOTO(out_free_memmd, rc);
1191
1192         OBDO_ALLOC(oa);
1193         if (oa == NULL)
1194                 GOTO(out_free_memmd, rc = -ENOMEM);
1195
1196         oa->o_id = lsm->lsm_object_id;
1197         oa->o_gr = lsm->lsm_object_gr;
1198         oa->o_mode = body->mode & S_IFMT;
1199         oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP | OBD_MD_FLTYPE;
1200
1201         if (body->valid & OBD_MD_FLCOOKIE) {
1202                 oa->o_valid |= OBD_MD_FLCOOKIE;
1203                 oti.oti_logcookies =
1204                         lustre_msg_buf(request->rq_repmsg, REPLY_REC_OFF + 2,
1205                                        sizeof(struct llog_cookie) *
1206                                        lsm->lsm_stripe_count);
1207                 if (oti.oti_logcookies == NULL) {
1208                         oa->o_valid &= ~OBD_MD_FLCOOKIE;
1209                         body->valid &= ~OBD_MD_FLCOOKIE;
1210                 }
1211         }
1212
1213         rc = obd_destroy(ll_i2obdexp(dir), oa, lsm, &oti, ll_i2mdcexp(dir));
1214         OBDO_FREE(oa);
1215         if (rc)
1216                 CERROR("obd destroy objid "LPX64"@"LPX64" error %d\n",
1217                        lsm->lsm_object_id, lsm->lsm_object_gr, rc);
1218  out_free_memmd:
1219         obd_free_memmd(ll_i2obdexp(dir), &lsm);
1220  out:
1221         return rc;
1222 }
1223
1224 /* ll_unlink_generic() doesn't update the inode with the new link count.
1225  * Instead, ll_ddelete() and ll_d_iput() will update it based upon if there
1226  * is any lock existing. They will recycle dentries and inodes based upon locks
1227  * too. b=20433 */
1228 static int ll_unlink_generic(struct inode * dir, struct qstr *name)
1229 {
1230         struct ptlrpc_request *request = NULL;
1231         struct mdc_op_data op_data = { { 0 } };
1232         int rc;
1233         ENTRY;
1234
1235         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1236                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1237
1238         rc = ll_prepare_mdc_op_data(&op_data, dir, NULL, name->name,
1239                                     name->len, 0, NULL);
1240         if (rc)
1241                 GOTO(out, rc);
1242
1243         ll_get_child_fid(dir, name, &op_data.fid3);
1244         rc = mdc_unlink(ll_i2sbi(dir)->ll_mdc_exp, &op_data, &request);
1245         if (rc)
1246                 GOTO(out, rc);
1247
1248         ll_update_times(request, REPLY_REC_OFF, dir);
1249
1250         rc = ll_objects_destroy(request, dir);
1251         if (rc)
1252                 GOTO(out, rc);
1253         EXIT;
1254  out:
1255         ptlrpc_req_finished(request);
1256         return(rc);
1257 }
1258
1259 static int ll_rename_generic(struct inode *src, struct qstr *src_name,
1260                              struct inode *tgt, struct qstr *tgt_name)
1261 {
1262         struct ptlrpc_request *request = NULL;
1263         struct ll_sb_info *sbi = ll_i2sbi(src);
1264         struct mdc_op_data op_data = { { 0 } };
1265         int err;
1266
1267         ENTRY;
1268         CDEBUG(D_VFSTRACE,"VFS Op:oldname=%.*s,src_dir=%lu/%u(%p),newname=%.*s,"
1269                "tgt_dir=%lu/%u(%p)\n", src_name->len, src_name->name,
1270                src->i_ino, src->i_generation, src, tgt_name->len,
1271                tgt_name->name, tgt->i_ino, tgt->i_generation, tgt);
1272
1273         err = ll_prepare_mdc_op_data(&op_data, src, tgt, NULL, 0, 0, NULL);
1274         if (err)
1275                 GOTO(out, err);
1276
1277         ll_get_child_fid(src, src_name, &op_data.fid3);
1278         ll_get_child_fid(tgt, tgt_name, &op_data.fid4);
1279         err = mdc_rename(sbi->ll_mdc_exp, &op_data,
1280                          src_name->name, src_name->len,
1281                          tgt_name->name, tgt_name->len, &request);
1282         if (err)
1283                 GOTO(out, err);
1284         ll_update_times(request, REPLY_REC_OFF, src);
1285         ll_update_times(request, REPLY_REC_OFF, tgt);
1286         err = ll_objects_destroy(request, src);
1287         if (err)
1288                 GOTO(out, err);
1289
1290         EXIT;
1291 out:
1292         ptlrpc_req_finished(request);
1293
1294         return(err);
1295 }
1296
1297 #ifdef HAVE_VFS_INTENT_PATCHES
1298 static int ll_mknod_raw(struct nameidata *nd, int mode, dev_t rdev)
1299 {
1300         return ll_mknod_generic(nd->dentry->d_inode, &nd->last, mode,rdev,NULL);
1301 }
1302 static int ll_rename_raw(struct nameidata *srcnd, struct nameidata *tgtnd)
1303 {
1304         return ll_rename_generic(srcnd->dentry->d_inode, &srcnd->last,
1305                                  tgtnd->dentry->d_inode, &tgtnd->last);
1306 }
1307 static int ll_link_raw(struct nameidata *srcnd, struct nameidata *tgtnd)
1308 {
1309         return ll_link_generic(srcnd->dentry->d_inode, tgtnd->dentry->d_inode,
1310                                &tgtnd->last, NULL);
1311 }
1312 static int ll_symlink_raw(struct nameidata *nd, const char *tgt)
1313 {
1314         return ll_symlink_generic(nd->dentry->d_inode, &nd->last, tgt, NULL);
1315 }
1316 static int ll_rmdir_raw(struct nameidata *nd)
1317 {
1318         return ll_rmdir_generic(nd->dentry->d_inode, nd->dentry, &nd->last);
1319 }
1320 static int ll_mkdir_raw(struct nameidata *nd, int mode)
1321 {
1322         return ll_mkdir_generic(nd->dentry->d_inode, &nd->last, mode, NULL);
1323 }
1324 static int ll_unlink_raw(struct nameidata *nd)
1325 {
1326         return ll_unlink_generic(nd->dentry->d_inode, &nd->last);
1327 }
1328 #endif
1329
1330 static int ll_mknod(struct inode *dir, struct dentry *dchild, int mode,
1331                     ll_dev_t rdev)
1332 {
1333         return ll_mknod_generic(dir, &dchild->d_name, mode,
1334                                 old_encode_dev(rdev), dchild);
1335 }
1336
1337 static int ll_unlink(struct inode * dir, struct dentry *dentry)
1338 {
1339         return ll_unlink_generic(dir, &dentry->d_name);
1340 }
1341 static int ll_mkdir(struct inode *dir, struct dentry *dentry, int mode)
1342 {
1343         return ll_mkdir_generic(dir, &dentry->d_name, mode, dentry);
1344 }
1345 static int ll_rmdir(struct inode *dir, struct dentry *dentry)
1346 {
1347         return ll_rmdir_generic(dir, NULL, &dentry->d_name);
1348 }
1349 static int ll_symlink(struct inode *dir, struct dentry *dentry,
1350                       const char *oldname)
1351 {
1352         return ll_symlink_generic(dir, &dentry->d_name, oldname, dentry);
1353 }
1354 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1355                    struct dentry *new_dentry)
1356 {
1357         return ll_link_generic(old_dentry->d_inode, dir,
1358                                &new_dentry->d_name, new_dentry);
1359 }
1360 static int ll_rename(struct inode *old_dir, struct dentry *old_dentry,
1361                      struct inode *new_dir, struct dentry *new_dentry)
1362 {
1363         int err;
1364         err = ll_rename_generic(old_dir, &old_dentry->d_name, new_dir,
1365                                 &new_dentry->d_name);
1366         if (!err) {
1367 #ifndef HAVE_FS_RENAME_DOES_D_MOVE
1368                 if (!S_ISDIR(old_dentry->d_inode->i_mode))
1369 #endif
1370                         d_move(old_dentry, new_dentry);
1371         }
1372         return err;
1373 }
1374
1375 struct inode_operations ll_dir_inode_operations = {
1376 #ifdef HAVE_VFS_INTENT_PATCHES
1377         .link_raw           = ll_link_raw,
1378         .unlink_raw         = ll_unlink_raw,
1379         .symlink_raw        = ll_symlink_raw,
1380         .mkdir_raw          = ll_mkdir_raw,
1381         .rmdir_raw          = ll_rmdir_raw,
1382         .mknod_raw          = ll_mknod_raw,
1383         .rename_raw         = ll_rename_raw,
1384         .setattr            = ll_setattr,
1385         .setattr_raw        = ll_setattr_raw,
1386 #endif
1387         .mknod              = ll_mknod,
1388         .lookup             = ll_lookup_nd,
1389         .create             = ll_create_nd,
1390         /* We need all these non-raw things for NFSD, to not patch it. */
1391         .unlink             = ll_unlink,
1392         .mkdir              = ll_mkdir,
1393         .rmdir              = ll_rmdir,
1394         .symlink            = ll_symlink,
1395         .link               = ll_link,
1396         .rename             = ll_rename,
1397         .setattr            = ll_setattr,
1398         .getattr            = ll_getattr,
1399         .permission         = ll_inode_permission,
1400         .setxattr           = ll_setxattr,
1401         .getxattr           = ll_getxattr,
1402         .listxattr          = ll_listxattr,
1403         .removexattr        = ll_removexattr,
1404 };
1405
1406 struct inode_operations ll_special_inode_operations = {
1407 #ifdef HAVE_VFS_INTENT_PATCHES
1408         .setattr_raw    = ll_setattr_raw,
1409 #endif
1410         .setattr        = ll_setattr,
1411         .getattr        = ll_getattr,
1412         .permission     = ll_inode_permission,
1413         .setxattr       = ll_setxattr,
1414         .getxattr       = ll_getxattr,
1415         .listxattr      = ll_listxattr,
1416         .removexattr    = ll_removexattr,
1417 };