1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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.
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).
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
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
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
38 #include <linux/sched.h>
39 #include <linux/smp_lock.h>
40 #include <linux/quotaops.h>
42 #define DEBUG_SUBSYSTEM S_LLITE
44 #include <obd_support.h>
45 #include <lustre_lite.h>
46 #include <lustre/lustre_idl.h>
47 #include <lustre_dlm.h>
48 #include <lustre_mdc.h>
49 //#include <lustre_ver.h>
50 //#include <lustre_version.h>
52 #include "llite_internal.h"
54 spinlock_t ll_lookup_lock = SPIN_LOCK_UNLOCKED;
56 /* should NOT be called with the dcache lock, see fs/dcache.c */
57 static void ll_release(struct dentry *de)
59 struct ll_dentry_data *lld;
63 if (lld == NULL) { /* NFS copies the de->d_op methods (bug 4655) */
67 #ifndef HAVE_VFS_INTENT_PATCHES
69 ll_intent_release(lld->lld_it);
70 OBD_FREE(lld->lld_it, sizeof(*lld->lld_it));
73 LASSERT(lld->lld_cwd_count == 0);
74 LASSERT(lld->lld_mnt_count == 0);
75 OBD_FREE(de->d_fsdata, sizeof(*lld));
80 /* Compare if two dentries are the same. Don't match if the existing dentry
81 * is marked DCACHE_LUSTRE_INVALID. Returns 1 if different, 0 if the same.
83 * This avoids a race where ll_lookup_it() instantiates a dentry, but we get
84 * an AST before calling d_revalidate_it(). The dentry still exists (marked
85 * INVALID) so d_lookup() matches it, but we have no lock on it (so
86 * lock_match() fails) and we spin around real_lookup(). */
87 int ll_dcompare(struct dentry *parent, struct qstr *d_name, struct qstr *name)
89 struct dentry *dchild;
92 if (d_name->len != name->len)
95 if (memcmp(d_name->name, name->name, name->len))
98 /* XXX: d_name must be in-dentry structure */
99 dchild = container_of(d_name, struct dentry, d_name); /* ugh */
101 CDEBUG(D_DENTRY,"found name %.*s(%p) - flags %d/%x - refc %d\n",
102 name->len, name->name, dchild,
103 d_mountpoint(dchild), dchild->d_flags & DCACHE_LUSTRE_INVALID,
104 atomic_read(&dchild->d_count));
106 /* mountpoint is always valid */
107 if (d_mountpoint(dchild))
110 if (dchild->d_flags & DCACHE_LUSTRE_INVALID)
117 /* should NOT be called with the dcache lock, see fs/dcache.c */
118 static int ll_ddelete(struct dentry *de)
122 #ifndef DCACHE_LUSTRE_INVALID
123 #define DCACHE_LUSTRE_INVALID 0
126 CDEBUG(D_DENTRY, "%s dentry %.*s (%p, parent %p, inode %p) %s%s\n",
127 (de->d_flags & DCACHE_LUSTRE_INVALID ? "deleting" : "keeping"),
128 de->d_name.len, de->d_name.name, de, de->d_parent, de->d_inode,
129 d_unhashed(de) ? "" : "hashed,",
130 list_empty(&de->d_subdirs) ? "" : "subdirs");
131 #if DCACHE_LUSTRE_INVALID == 0
132 #undef DCACHE_LUSTRE_INVALID
138 void ll_set_dd(struct dentry *de)
143 CDEBUG(D_DENTRY, "ldd on dentry %.*s (%p) parent %p inode %p refc %d\n",
144 de->d_name.len, de->d_name.name, de, de->d_parent, de->d_inode,
145 atomic_read(&de->d_count));
147 if (de->d_fsdata == NULL) {
148 struct ll_dentry_data *lld;
151 if (likely(lld != NULL)) {
153 if (likely(de->d_fsdata == NULL))
164 void ll_intent_drop_lock(struct lookup_intent *it)
166 struct lustre_handle *handle;
168 if (it->it_op && it->d.lustre.it_lock_mode) {
169 handle = (struct lustre_handle *)&it->d.lustre.it_lock_handle;
170 CDEBUG(D_DLMTRACE, "releasing lock with cookie "LPX64
171 " from it %p\n", handle->cookie, it);
172 ldlm_lock_decref(handle, it->d.lustre.it_lock_mode);
174 /* bug 494: intent_release may be called multiple times, from
175 * this thread and we don't want to double-decref this lock */
176 it->d.lustre.it_lock_mode = 0;
180 void ll_intent_release(struct lookup_intent *it)
184 CDEBUG(D_INFO, "intent %p released\n", it);
185 ll_intent_drop_lock(it);
186 #ifdef HAVE_VFS_INTENT_PATCHES
188 it->it_op_release = 0;
190 /* We are still holding extra reference on a request, need to free it */
191 if (it_disposition(it, DISP_ENQ_OPEN_REF))
192 ptlrpc_req_finished(it->d.lustre.it_data); /* ll_file_open */
193 if (it_disposition(it, DISP_ENQ_CREATE_REF)) /* create rec */
194 ptlrpc_req_finished(it->d.lustre.it_data);
195 if (it_disposition(it, DISP_ENQ_COMPLETE)) /* saved req from revalidate
197 ptlrpc_req_finished(it->d.lustre.it_data);
199 it->d.lustre.it_disposition = 0;
200 it->d.lustre.it_data = NULL;
204 /* Drop dentry if it is not used already, unhash otherwise.
205 Should be called with dcache lock held!
206 Returns: 1 if dentry was dropped, 0 if unhashed. */
207 int ll_drop_dentry(struct dentry *dentry)
210 if (atomic_read(&dentry->d_count) == 0) {
211 CDEBUG(D_DENTRY, "deleting dentry %.*s (%p) parent %p "
212 "inode %p\n", dentry->d_name.len,
213 dentry->d_name.name, dentry, dentry->d_parent,
217 unlock_dentry(dentry);
218 spin_unlock(&dcache_lock);
219 spin_unlock(&ll_lookup_lock);
221 spin_lock(&ll_lookup_lock);
222 spin_lock(&dcache_lock);
225 /* disconected dentry can not be find without lookup, because we
226 * not need his to unhash or mark invalid. */
227 if (dentry->d_flags & DCACHE_DISCONNECTED) {
228 unlock_dentry(dentry);
232 #ifdef DCACHE_LUSTRE_INVALID
233 if (!(dentry->d_flags & DCACHE_LUSTRE_INVALID)) {
235 if (!d_unhashed(dentry)) {
237 CDEBUG(D_DENTRY, "unhashing dentry %.*s (%p) parent %p "
238 "inode %p refc %d\n", dentry->d_name.len,
239 dentry->d_name.name, dentry, dentry->d_parent,
240 dentry->d_inode, atomic_read(&dentry->d_count));
241 /* actually we don't unhash the dentry, rather just
242 * mark it inaccessible for to __d_lookup(). otherwise
243 * sys_getcwd() could return -ENOENT -bzzz */
244 #ifdef DCACHE_LUSTRE_INVALID
245 dentry->d_flags |= DCACHE_LUSTRE_INVALID;
247 if (!dentry->d_inode || !S_ISDIR(dentry->d_inode->i_mode))
251 unlock_dentry(dentry);
255 void ll_unhash_aliases(struct inode *inode)
257 struct list_head *tmp, *head;
261 CERROR("unexpected NULL inode, tell phil\n");
265 CDEBUG(D_INODE, "marking dentries for ino %lu/%u(%p) invalid\n",
266 inode->i_ino, inode->i_generation, inode);
268 head = &inode->i_dentry;
269 spin_lock(&ll_lookup_lock);
270 spin_lock(&dcache_lock);
273 while ((tmp = tmp->next) != head) {
274 struct dentry *dentry = list_entry(tmp, struct dentry, d_alias);
276 CDEBUG(D_DENTRY, "dentry in drop %.*s (%p) parent %p "
277 "inode %p flags %d\n", dentry->d_name.len,
278 dentry->d_name.name, dentry, dentry->d_parent,
279 dentry->d_inode, dentry->d_flags);
281 if (dentry->d_name.len == 1 && dentry->d_name.name[0] == '/') {
282 CERROR("called on root (?) dentry=%p, inode=%p "
283 "ino=%lu\n", dentry, inode, inode->i_ino);
284 lustre_dump_dentry(dentry, 1);
285 libcfs_debug_dumpstack(NULL);
288 if (ll_drop_dentry(dentry))
291 spin_unlock(&dcache_lock);
292 spin_unlock(&ll_lookup_lock);
297 int ll_revalidate_it_finish(struct ptlrpc_request *request,
298 struct lookup_intent *it,
307 if (it_disposition(it, DISP_LOOKUP_NEG))
310 rc = ll_prep_inode(&de->d_inode, request, NULL);
315 void ll_lookup_finish_locks(struct lookup_intent *it, struct dentry *dentry)
318 LASSERT(dentry != NULL);
320 if (it->d.lustre.it_lock_mode && dentry->d_inode != NULL) {
321 struct inode *inode = dentry->d_inode;
322 struct ll_sb_info *sbi = ll_i2sbi(dentry->d_inode);
324 CDEBUG(D_DLMTRACE, "setting l_data to inode %p (%lu/%u)\n",
325 inode, inode->i_ino, inode->i_generation);
326 md_set_lock_data(sbi->ll_md_exp, &it->d.lustre.it_lock_handle,
330 /* drop lookup or getattr locks immediately */
331 if (it->it_op == IT_LOOKUP || it->it_op == IT_GETATTR) {
332 /* on 2.6 there are situation when several lookups and
333 * revalidations may be requested during single operation.
334 * therefore, we don't release intent here -bzzz */
335 ll_intent_drop_lock(it);
339 void ll_frob_intent(struct lookup_intent **itp, struct lookup_intent *deft)
341 struct lookup_intent *it = *itp;
342 #ifdef HAVE_VFS_INTENT_PATCHES
344 LASSERTF(it->it_magic == INTENT_MAGIC,
345 "%p has bad intent magic: %x\n",
350 if (!it || it->it_op == IT_GETXATTR)
353 #ifdef HAVE_VFS_INTENT_PATCHES
354 it->it_op_release = ll_intent_release;
358 int ll_revalidate_it(struct dentry *de, int lookup_flags,
359 struct lookup_intent *it)
361 struct md_op_data *op_data;
362 struct ptlrpc_request *req = NULL;
363 struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
364 struct obd_export *exp;
365 struct inode *parent = de->d_parent->d_inode;
369 CDEBUG(D_VFSTRACE, "VFS Op:name=%s,intent=%s\n", de->d_name.name,
372 if (de->d_inode == NULL) {
373 /* We can only use negative dentries if this is stat or lookup,
374 for opens and stuff we do need to query server. */
375 /* If there is IT_CREAT in intent op set, then we must throw
376 away this negative dentry and actually do the request to
377 kernel to create whatever needs to be created (if possible)*/
378 if (it && (it->it_op & IT_CREAT))
381 #ifdef DCACHE_LUSTRE_INVALID
382 if (de->d_flags & DCACHE_LUSTRE_INVALID)
386 rc = ll_have_md_lock(parent, MDS_INODELOCK_UPDATE);
390 /* Never execute intents for mount points.
391 * Attributes will be fixed up in ll_inode_revalidate_it */
392 if (d_mountpoint(de))
393 GOTO(out_sa, rc = 1);
395 /* need to get attributes in case root got changed from other client */
396 if (de == de->d_sb->s_root) {
397 rc = __ll_inode_revalidate_it(de, it, MDS_INODELOCK_LOOKUP);
403 exp = ll_i2mdexp(de->d_inode);
405 OBD_FAIL_TIMEOUT(OBD_FAIL_MDC_REVALIDATE_PAUSE, 5);
406 ll_frob_intent(&it, &lookup_it);
409 if (it->it_op == IT_LOOKUP && !(de->d_flags & DCACHE_LUSTRE_INVALID))
410 GOTO(out_sa, rc = 1);
412 op_data = ll_prep_md_op_data(NULL, parent, de->d_inode,
413 de->d_name.name, de->d_name.len,
414 0, LUSTRE_OPC_ANY, NULL);
416 RETURN(PTR_ERR(op_data));
418 if ((it->it_op == IT_OPEN) && de->d_inode) {
419 struct inode *inode = de->d_inode;
420 struct ll_inode_info *lli = ll_i2info(inode);
421 struct obd_client_handle **och_p;
425 * We used to check for MDS_INODELOCK_OPEN here, but in fact
426 * just having LOOKUP lock is enough to justify inode is the
427 * same. And if inode is the same and we have suitable
428 * openhandle, then there is no point in doing another OPEN RPC
429 * just to throw away newly received openhandle. There are no
430 * security implications too, if file owner or access mode is
431 * change, LOOKUP lock is revoked.
435 if (it->it_flags & FMODE_WRITE) {
436 och_p = &lli->lli_mds_write_och;
437 och_usecount = &lli->lli_open_fd_write_count;
438 } else if (it->it_flags & FMODE_EXEC) {
439 och_p = &lli->lli_mds_exec_och;
440 och_usecount = &lli->lli_open_fd_exec_count;
442 och_p = &lli->lli_mds_read_och;
443 och_usecount = &lli->lli_open_fd_read_count;
445 /* Check for the proper lock. */
446 if (!ll_have_md_lock(inode, MDS_INODELOCK_LOOKUP))
448 down(&lli->lli_och_sem);
449 if (*och_p) { /* Everything is open already, do nothing */
450 /*(*och_usecount)++; Do not let them steal our open
451 handle from under us */
452 /* XXX The code above was my original idea, but in case
453 we have the handle, but we cannot use it due to later
454 checks (e.g. O_CREAT|O_EXCL flags set), nobody
455 would decrement counter increased here. So we just
456 hope the lock won't be invalidated in between. But
457 if it would be, we'll reopen the open request to
458 MDS later during file open path */
459 up(&lli->lli_och_sem);
460 ll_finish_md_op_data(op_data);
463 up(&lli->lli_och_sem);
467 if (it->it_op == IT_GETATTR)
468 first = ll_statahead_enter(parent, &de, 0);
471 it->it_create_mode &= ~current->fs->umask;
472 it->it_create_mode |= M_CHECK_STALE;
473 rc = md_intent_lock(exp, op_data, NULL, 0, it,
475 &req, ll_md_blocking_ast, 0);
476 it->it_create_mode &= ~M_CHECK_STALE;
477 ll_finish_md_op_data(op_data);
478 if (it->it_op == IT_GETATTR && !first)
479 /* If there are too many locks on client-side, then some
480 * locks taken by statahead maybe dropped automatically
481 * before the real "revalidate" using them. */
482 ll_statahead_exit(parent, de, req == NULL ? rc : 0);
483 else if (first == -EEXIST)
484 ll_statahead_mark(parent, de);
486 /* If req is NULL, then md_intent_lock only tried to do a lock match;
487 * if all was well, it will return 1 if it found locks, 0 otherwise. */
488 if (req == NULL && rc >= 0) {
496 CDEBUG(D_INFO, "ll_intent_lock: rc %d : it->it_status "
497 "%d\n", rc, it->d.lustre.it_status);
503 rc = ll_revalidate_it_finish(req, it, de);
505 if (rc != -ESTALE && rc != -ENOENT)
506 ll_intent_release(it);
510 if ((it->it_op & IT_OPEN) && de->d_inode &&
511 !S_ISREG(de->d_inode->i_mode) &&
512 !S_ISDIR(de->d_inode->i_mode)) {
513 ll_release_openhandle(de, it);
517 /* unfortunately ll_intent_lock may cause a callback and revoke our
519 spin_lock(&ll_lookup_lock);
520 spin_lock(&dcache_lock);
524 d_rehash_cond(de, 0);
525 spin_unlock(&dcache_lock);
526 spin_unlock(&ll_lookup_lock);
529 /* We do not free request as it may be reused during following lookup
530 * (see comment in mdc/mdc_locks.c::mdc_intent_lock()), request will
531 * be freed in ll_lookup_it or in ll_intent_release. But if
532 * request was not completed, we need to free it. (bug 5154, 9903) */
533 if (req != NULL && !it_disposition(it, DISP_ENQ_COMPLETE))
534 ptlrpc_req_finished(req);
536 #ifdef DCACHE_LUSTRE_INVALID
537 ll_unhash_aliases(de->d_inode);
538 /* done in ll_unhash_aliases()
539 dentry->d_flags |= DCACHE_LUSTRE_INVALID; */
541 /* We do not want d_invalidate to kill all child dentries too */
545 CDEBUG(D_DENTRY, "revalidated dentry %.*s (%p) parent %p "
546 "inode %p refc %d\n", de->d_name.len,
547 de->d_name.name, de, de->d_parent, de->d_inode,
548 atomic_read(&de->d_count));
549 ll_lookup_finish_locks(it, de);
550 #ifdef DCACHE_LUSTRE_INVALID
552 de->d_flags &= ~DCACHE_LUSTRE_INVALID;
559 * This part is here to combat evil-evil race in real_lookup on 2.6
560 * kernels. The race details are: We enter do_lookup() looking for some
561 * name, there is nothing in dcache for this name yet and d_lookup()
562 * returns NULL. We proceed to real_lookup(), and while we do this,
563 * another process does open on the same file we looking up (most simple
564 * reproducer), open succeeds and the dentry is added. Now back to
565 * us. In real_lookup() we do d_lookup() again and suddenly find the
566 * dentry, so we call d_revalidate on it, but there is no lock, so
567 * without this code we would return 0, but unpatched real_lookup just
568 * returns -ENOENT in such a case instead of retrying the lookup. Once
569 * this is dealt with in real_lookup(), all of this ugly mess can go and
570 * we can just check locks in ->d_revalidate without doing any RPCs
574 if (it != &lookup_it) {
575 /* MDS_INODELOCK_UPDATE needed for IT_GETATTR case. */
576 if (it->it_op == IT_GETATTR)
577 lookup_it.it_op = IT_GETATTR;
578 ll_lookup_finish_locks(it, de);
582 /* Do real lookup here. */
583 op_data = ll_prep_md_op_data(NULL, parent, NULL, de->d_name.name,
584 de->d_name.len, 0, (it->it_op & IT_CREAT ?
586 LUSTRE_OPC_ANY), NULL);
588 RETURN(PTR_ERR(op_data));
590 rc = md_intent_lock(exp, op_data, NULL, 0, it, 0, &req,
591 ll_md_blocking_ast, 0);
593 struct mdt_body *mdt_body;
594 struct lu_fid fid = {.f_seq = 0, .f_oid = 0, .f_ver = 0};
595 mdt_body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
598 fid = *ll_inode2fid(de->d_inode);
600 /* see if we got same inode, if not - return error */
601 if (lu_fid_eq(&fid, &mdt_body->fid1)) {
602 ll_finish_md_op_data(op_data);
604 goto revalidate_finish;
606 ll_intent_release(it);
608 ll_finish_md_op_data(op_data);
613 * For rc == 1 case, should not return directly to prevent losing
614 * statahead windows; for rc == 0 case, the "lookup" will be done later.
616 if (it && it->it_op == IT_GETATTR && rc == 1) {
617 first = ll_statahead_enter(parent, &de, 0);
619 ll_statahead_exit(parent, de, 1);
620 else if (first == -EEXIST)
621 ll_statahead_mark(parent, de);
627 /*static*/ void ll_pin(struct dentry *de, struct vfsmount *mnt, int flag)
629 struct inode *inode= de->d_inode;
630 struct ll_sb_info *sbi = ll_i2sbi(inode);
631 struct ll_dentry_data *ldd = ll_d2d(de);
632 struct obd_client_handle *handle;
639 /* Strictly speaking this introduces an additional race: the
640 * increments should wait until the rpc has returned.
641 * However, given that at present the function is void, this
643 if (flag == 1 && (++ldd->lld_mnt_count) > 1) {
649 if (flag == 0 && (++ldd->lld_cwd_count) > 1) {
656 handle = (flag) ? &ldd->lld_mnt_och : &ldd->lld_cwd_och;
657 oc = ll_mdscapa_get(inode);
658 rc = obd_pin(sbi->ll_md_exp, ll_inode2fid(inode), oc, handle, flag);
662 memset(handle, 0, sizeof(*handle));
664 ldd->lld_cwd_count--;
666 ldd->lld_mnt_count--;
674 /*static*/ void ll_unpin(struct dentry *de, struct vfsmount *mnt, int flag)
676 struct ll_sb_info *sbi = ll_i2sbi(de->d_inode);
677 struct ll_dentry_data *ldd = ll_d2d(de);
678 struct obd_client_handle handle;
684 /* Strictly speaking this introduces an additional race: the
685 * increments should wait until the rpc has returned.
686 * However, given that at present the function is void, this
688 handle = (flag) ? ldd->lld_mnt_och : ldd->lld_cwd_och;
689 if (handle.och_magic != OBD_CLIENT_HANDLE_MAGIC) {
690 /* the "pin" failed */
697 count = --ldd->lld_mnt_count;
699 count = --ldd->lld_cwd_count;
707 rc = obd_unpin(sbi->ll_md_exp, &handle, flag);
712 #ifdef HAVE_VFS_INTENT_PATCHES
713 int ll_revalidate_nd(struct dentry *dentry, struct nameidata *nd)
718 if (nd && nd->flags & LOOKUP_LAST && !(nd->flags & LOOKUP_LINK_NOTLAST))
719 rc = ll_revalidate_it(dentry, nd->flags, &nd->intent);
721 rc = ll_revalidate_it(dentry, 0, NULL);
726 int ll_revalidate_nd(struct dentry *dentry, struct nameidata *nd)
731 if (nd && !(nd->flags & (LOOKUP_CONTINUE|LOOKUP_PARENT))) {
732 struct lookup_intent *it;
733 it = ll_convert_intent(&nd->intent.open, nd->flags);
736 if (it->it_op == (IT_OPEN|IT_CREAT))
737 if (nd->intent.open.flags & O_EXCL) {
738 CDEBUG(D_VFSTRACE, "create O_EXCL, returning 0\n");
743 rc = ll_revalidate_it(dentry, nd->flags, it);
745 if (rc && (nd->flags & LOOKUP_OPEN) &&
746 it_disposition(it, DISP_OPEN_OPEN)) {/*Open*/
747 #ifdef HAVE_FILE_IN_STRUCT_INTENT
748 // XXX Code duplication with ll_lookup_nd
749 if (S_ISFIFO(dentry->d_inode->i_mode)) {
750 // We cannot call open here as it would
753 (struct ptlrpc_request *)
754 it->d.lustre.it_data);
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
762 nd->intent.open.file->private_data = it;
763 filp = lookup_instantiate_filp(nd, dentry,NULL);
768 nd->intent.open.file->private_data = it;
769 (void)lookup_instantiate_filp(nd, dentry,NULL);
773 ll_release_openhandle(dentry, it);
774 #endif /* HAVE_FILE_IN_STRUCT_INTENT */
776 if (!rc && (nd->flags & LOOKUP_CREATE) &&
777 it_disposition(it, DISP_OPEN_CREATE)) {
778 /* We created something but we may only return
779 * negative dentry here, so save request in dentry,
780 * if lookup will be called later on, it will
781 * pick the request, otherwise it would be freed
783 ll_d2d(dentry)->lld_it = it;
784 it = NULL; /* avoid freeing */
789 ll_intent_release(it);
790 OBD_FREE(it, sizeof(*it));
793 rc = ll_revalidate_it(dentry, 0, NULL);
800 struct dentry_operations ll_d_ops = {
801 .d_revalidate = ll_revalidate_nd,
802 .d_release = ll_release,
803 .d_delete = ll_ddelete,
804 .d_compare = ll_dcompare,