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 <linux/lustre_version.h>
50 #include "llite_internal.h"
52 spinlock_t ll_lookup_lock = SPIN_LOCK_UNLOCKED;
54 /* should NOT be called with the dcache lock, see fs/dcache.c */
55 static void ll_release(struct dentry *de)
57 struct ll_dentry_data *lld;
61 if (lld == NULL) { /* NFS copies the de->d_op methods (bug 4655) */
65 #ifndef HAVE_VFS_INTENT_PATCHES
67 ll_intent_release(lld->lld_it);
68 OBD_FREE(lld->lld_it, sizeof(*lld->lld_it));
71 LASSERT(lld->lld_cwd_count == 0);
72 LASSERT(lld->lld_mnt_count == 0);
73 OBD_FREE(de->d_fsdata, sizeof(*lld));
78 /* Compare if two dentries are the same. Don't match if the existing dentry
79 * is marked DCACHE_LUSTRE_INVALID. Returns 1 if different, 0 if the same.
81 * This avoids a race where ll_lookup_it() instantiates a dentry, but we get
82 * an AST before calling d_revalidate_it(). The dentry still exists (marked
83 * INVALID) so d_lookup() matches it, but we have no lock on it (so
84 * lock_match() fails) and we spin around real_lookup(). */
85 int ll_dcompare(struct dentry *parent, struct qstr *d_name, struct qstr *name)
87 struct dentry *dchild;
90 /* XXX: d_name must be in-dentry structure */
91 dchild = container_of(d_name, struct dentry, d_name); /* ugh */
93 if (d_name->len != name->len)
96 if (memcmp(d_name->name, name->name, name->len))
99 CDEBUG(D_DENTRY,"found name %.*s(%p) - flags %d/%x - refc %d\n",
100 name->len, name->name, dchild,
101 d_mountpoint(dchild), dchild->d_flags & DCACHE_LUSTRE_INVALID,
102 atomic_read(&dchild->d_count));
104 /* mountpoint is always valid */
105 if (d_mountpoint(dchild))
108 if (dchild->d_flags & DCACHE_LUSTRE_INVALID)
114 static inline int return_if_equal(struct ldlm_lock *lock, void *data)
116 return LDLM_ITER_STOP;
119 /* find any ldlm lock of the inode in mdc and lov
123 int find_cbdata(struct inode *inode)
126 struct ll_inode_info *lli = ll_i2info(inode);
127 struct ll_sb_info *sbi = ll_i2sbi(inode);
132 ll_inode2fid(&fid, inode);
133 rc = mdc_find_cbdata(sbi->ll_mdc_exp, &fid, return_if_equal, NULL);
138 rc = obd_find_cbdata(sbi->ll_osc_exp, lli->lli_smd,
139 return_if_equal, NULL);
144 /* should NOT be called with the dcache lock, see fs/dcache.c */
145 static int ll_ddelete(struct dentry *de)
150 CDEBUG(D_DENTRY, "%s dentry %.*s (%p, parent %p, inode %p) %s%s\n",
151 (de->d_flags & DCACHE_LUSTRE_INVALID ? "hiden" : "keeping"),
152 de->d_name.len, de->d_name.name, de, de->d_parent, de->d_inode,
153 d_unhashed(de) ? "" : "hashed,",
154 list_empty(&de->d_subdirs) ? "" : "subdirs");
156 /* if not ldlm lock for this inode, set i_nlink to 0 so that
157 * this inode can be recycled later b=20433 */
158 LASSERT(atomic_read(&de->d_count) == 0);
159 if (de->d_inode && !find_cbdata(de->d_inode))
160 de->d_inode->i_nlink = 0;
162 if (de->d_flags & DCACHE_LUSTRE_INVALID)
168 void ll_set_dd(struct dentry *de)
173 CDEBUG(D_DENTRY, "ldd on dentry %.*s (%p) parent %p inode %p refc %d\n",
174 de->d_name.len, de->d_name.name, de, de->d_parent, de->d_inode,
175 atomic_read(&de->d_count));
177 if (de->d_fsdata == NULL) {
178 struct ll_dentry_data *lld;
181 if (likely(lld != NULL)) {
183 if (likely(de->d_fsdata == NULL))
194 void ll_intent_drop_lock(struct lookup_intent *it)
196 struct lustre_handle *handle;
198 if (it->it_op && it->d.lustre.it_lock_mode) {
199 handle = (struct lustre_handle *)&it->d.lustre.it_lock_handle;
200 CDEBUG(D_DLMTRACE, "releasing lock with cookie "LPX64
201 " from it %p\n", handle->cookie, it);
202 ldlm_lock_decref(handle, it->d.lustre.it_lock_mode);
204 /* bug 494: intent_release may be called multiple times, from
205 * this thread and we don't want to double-decref this lock */
206 it->d.lustre.it_lock_mode = 0;
210 void ll_intent_release(struct lookup_intent *it)
214 ll_intent_drop_lock(it);
215 #ifdef HAVE_VFS_INTENT_PATCHES
217 it->it_op_release = 0;
219 /* We are still holding extra reference on a request, need to free it */
220 if (it_disposition(it, DISP_ENQ_OPEN_REF)) /* open req for llfile_open*/
221 ptlrpc_req_finished(it->d.lustre.it_data);
222 if (it_disposition(it, DISP_ENQ_CREATE_REF)) /* create rec */
223 ptlrpc_req_finished(it->d.lustre.it_data);
224 if (it_disposition(it, DISP_ENQ_COMPLETE)) /* saved req from revalidate
226 ptlrpc_req_finished(it->d.lustre.it_data);
228 it->d.lustre.it_disposition = 0;
229 it->d.lustre.it_data = NULL;
233 /* Drop dentry if it is not used already, unhash otherwise.
234 Should be called with dcache lock held!
235 Returns: 1 if dentry was dropped, 0 if unhashed. */
236 int ll_drop_dentry(struct dentry *dentry)
239 if (atomic_read(&dentry->d_count) == 0) {
240 CDEBUG(D_DENTRY, "deleting dentry %.*s (%p) parent %p "
241 "inode %p\n", dentry->d_name.len,
242 dentry->d_name.name, dentry, dentry->d_parent,
246 unlock_dentry(dentry);
247 spin_unlock(&dcache_lock);
248 spin_unlock(&ll_lookup_lock);
250 spin_lock(&ll_lookup_lock);
251 spin_lock(&dcache_lock);
254 /* disconected dentry can not be find without lookup, because we
255 * not need his to unhash or mark invalid. */
256 if (dentry->d_flags & DCACHE_DISCONNECTED) {
257 unlock_dentry(dentry);
261 #ifdef DCACHE_LUSTRE_INVALID
262 if (!(dentry->d_flags & DCACHE_LUSTRE_INVALID)) {
264 if (!d_unhashed(dentry)) {
266 CDEBUG(D_DENTRY, "unhashing dentry %.*s (%p) parent %p "
267 "inode %p refc %d\n", dentry->d_name.len,
268 dentry->d_name.name, dentry, dentry->d_parent,
269 dentry->d_inode, atomic_read(&dentry->d_count));
270 /* actually we don't unhash the dentry, rather just
271 * mark it inaccessible for to __d_lookup(). otherwise
272 * sys_getcwd() could return -ENOENT -bzzz */
273 #ifdef DCACHE_LUSTRE_INVALID
274 dentry->d_flags |= DCACHE_LUSTRE_INVALID;
276 if (!dentry->d_inode || !S_ISDIR(dentry->d_inode->i_mode))
281 unlock_dentry(dentry);
285 void ll_unhash_aliases(struct inode *inode)
287 struct list_head *tmp, *head;
291 CERROR("unexpected NULL inode, tell phil\n");
295 CDEBUG(D_INODE, "marking dentries for ino %lu/%u(%p) invalid\n",
296 inode->i_ino, inode->i_generation, inode);
298 head = &inode->i_dentry;
299 spin_lock(&ll_lookup_lock);
300 spin_lock(&dcache_lock);
303 while ((tmp = tmp->next) != head) {
304 struct dentry *dentry = list_entry(tmp, struct dentry, d_alias);
306 if (dentry->d_name.len == 1 && dentry->d_name.name[0] == '/') {
307 CERROR("called on root (?) dentry=%p, inode=%p "
308 "ino=%lu\n", dentry, inode, inode->i_ino);
309 lustre_dump_dentry(dentry, 1);
310 libcfs_debug_dumpstack(NULL);
313 if (ll_drop_dentry(dentry))
316 spin_unlock(&dcache_lock);
317 spin_unlock(&ll_lookup_lock);
322 int revalidate_it_finish(struct ptlrpc_request *request, int offset,
323 struct lookup_intent *it, struct dentry *de)
331 if (it_disposition(it, DISP_LOOKUP_NEG))
334 rc = ll_prep_inode(ll_i2sbi(de->d_inode)->ll_osc_exp, &de->d_inode,
335 request, offset, NULL);
340 void ll_lookup_finish_locks(struct lookup_intent *it, struct dentry *dentry)
343 LASSERT(dentry != NULL);
345 if (it->d.lustre.it_lock_mode && dentry->d_inode != NULL) {
346 struct inode *inode = dentry->d_inode;
347 CDEBUG(D_DLMTRACE, "setting l_data to inode %p (%lu/%u)\n",
348 inode, inode->i_ino, inode->i_generation);
349 mdc_set_lock_data(&it->d.lustre.it_lock_handle, inode, NULL);
352 /* drop lookup or getattr locks immediately */
353 if (it->it_op == IT_LOOKUP || it->it_op == IT_GETATTR) {
354 /* on 2.6 there are situation when several lookups and
355 * revalidations may be requested during single operation.
356 * therefore, we don't release intent here -bzzz */
357 ll_intent_drop_lock(it);
361 void ll_frob_intent(struct lookup_intent **itp, struct lookup_intent *deft)
363 struct lookup_intent *it = *itp;
364 #ifdef HAVE_VFS_INTENT_PATCHES
366 LASSERTF(it->it_magic == INTENT_MAGIC, "bad intent magic: %x\n",
371 if (!it || it->it_op == IT_GETXATTR)
374 #ifdef HAVE_VFS_INTENT_PATCHES
375 it->it_op_release = ll_intent_release;
379 int ll_revalidate_it(struct dentry *de, int lookup_flags,
380 struct lookup_intent *it)
382 struct mdc_op_data op_data = { { 0 } };
383 struct ptlrpc_request *req = NULL;
384 struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
385 struct obd_export *exp;
386 struct inode *parent = de->d_parent->d_inode;
390 CDEBUG(D_VFSTRACE, "VFS Op:name=%s,intent=%s\n", de->d_name.name,
393 if (de->d_inode == NULL) {
394 /* We can only use negative dentries if this is stat or lookup,
395 for opens and stuff we do need to query server. */
396 /* If there is IT_CREAT in intent op set, then we must throw
397 away this negative dentry and actually do the request to
398 kernel to create whatever needs to be created (if possible)*/
399 if (it && (it->it_op & IT_CREAT))
402 #ifdef DCACHE_LUSTRE_INVALID
403 if (de->d_flags & DCACHE_LUSTRE_INVALID)
407 rc = ll_have_md_lock(parent, MDS_INODELOCK_UPDATE);
411 exp = ll_i2mdcexp(de->d_inode);
413 /* Never execute intents for mount points.
414 * Attributes will be fixed up in ll_inode_revalidate_it */
415 if (d_mountpoint(de))
416 GOTO(out_sa, rc = 1);
418 /*need to get attributes in case it got changed from other client*/
419 if (de == de->d_sb->s_root) {
420 rc = __ll_inode_revalidate_it(de, it, MDS_INODELOCK_LOOKUP);
426 OBD_FAIL_TIMEOUT(OBD_FAIL_MDC_REVALIDATE_PAUSE, 5);
427 ll_frob_intent(&it, &lookup_it);
430 if (it->it_op == IT_LOOKUP && !(de->d_flags & DCACHE_LUSTRE_INVALID))
431 GOTO(out_sa, rc = 1);
433 ll_prepare_mdc_op_data(&op_data, parent, de->d_inode,
434 de->d_name.name, de->d_name.len, 0, NULL);
436 if ((it->it_op == IT_OPEN) && de->d_inode) {
437 struct inode *inode = de->d_inode;
438 struct ll_inode_info *lli = ll_i2info(inode);
439 struct obd_client_handle **och_p;
441 /* We used to check for MDS_INODELOCK_OPEN here, but in fact
442 * just having LOOKUP lock is enough to justify inode is the
443 * same. And if inode is the same and we have suitable
444 * openhandle, then there is no point in doing another OPEN RPC
445 * just to throw away newly received openhandle.
446 * There are no security implications too, if file owner or
447 * access mode is change, LOOKUP lock is revoked */
449 if (it->it_flags & FMODE_WRITE) {
450 och_p = &lli->lli_mds_write_och;
451 och_usecount = &lli->lli_open_fd_write_count;
452 } else if (it->it_flags & FMODE_EXEC) {
453 och_p = &lli->lli_mds_exec_och;
454 och_usecount = &lli->lli_open_fd_exec_count;
456 och_p = &lli->lli_mds_read_och;
457 och_usecount = &lli->lli_open_fd_read_count;
459 /* Check for the proper lock. */
460 if (!ll_have_md_lock(inode, MDS_INODELOCK_LOOKUP))
462 down(&lli->lli_och_sem);
463 if (*och_p) { /* Everything is open already, do nothing */
464 /*(*och_usecount)++; Do not let them steal our open
465 handle from under us */
466 /* XXX The code above was my original idea, but in case
467 we have the handle, but we cannot use it due to later
468 checks (e.g. O_CREAT|O_EXCL flags set), nobody
469 would decrement counter increased here. So we just
470 hope the lock won't be invalidated in between. But
471 if it would be, we'll reopen the open request to
472 MDS later during file open path */
473 up(&lli->lli_och_sem);
476 up(&lli->lli_och_sem);
480 if (it->it_op == IT_GETATTR)
481 first = ll_statahead_enter(parent, &de, 0);
484 it->it_create_mode &= ~current->fs->umask;
485 it->it_create_mode |= M_CHECK_STALE;
486 rc = mdc_intent_lock(exp, &op_data, NULL, 0, it, lookup_flags,
487 &req, ll_mdc_blocking_ast, 0);
488 it->it_create_mode &= ~M_CHECK_STALE;
489 if (it->it_op == IT_GETATTR && !first)
490 /* If there are too many locks on client-side, then some
491 * locks taken by statahead maybe dropped automatically
492 * before the real "revalidate" using them. */
493 ll_statahead_exit(parent, de, req == NULL ? rc : 0);
494 else if (first == -EEXIST)
495 ll_statahead_mark(parent, de);
497 /* If req is NULL, then mdc_intent_lock only tried to do a lock match;
498 * if all was well, it will return 1 if it found locks, 0 otherwise. */
499 if (req == NULL && rc >= 0) {
507 CDEBUG(D_INFO, "ll_intent_lock: rc %d : it->it_status "
508 "%d\n", rc, it->d.lustre.it_status);
514 rc = revalidate_it_finish(req, DLM_REPLY_REC_OFF, it, de);
516 /* we are going release the intent, so clear DISP_ENQ_COMPLETE
517 * to prevent a double free of the request */
518 it_clear_disposition(it, DISP_ENQ_COMPLETE);
519 ll_intent_release(it);
522 if ((it->it_op & IT_OPEN) && de->d_inode &&
523 !S_ISREG(de->d_inode->i_mode) &&
524 !S_ISDIR(de->d_inode->i_mode)) {
525 ll_release_openhandle(de, it);
529 /* unfortunately ll_intent_lock may cause a callback and revoke our
531 spin_lock(&ll_lookup_lock);
532 spin_lock(&dcache_lock);
536 d_rehash_cond(de, 0);
537 spin_unlock(&dcache_lock);
538 spin_unlock(&ll_lookup_lock);
541 /* We do not free request as it may be reused during following lookup
542 * (see comment in mdc/mdc_locks.c::mdc_intent_lock()), request will
543 * be freed in ll_lookup_it or in ll_intent_release. But if
544 * request was not completed, we need to free it. (bug 5154, 9903) */
545 if (req != NULL && !it_disposition(it, DISP_ENQ_COMPLETE))
546 ptlrpc_req_finished(req);
548 #ifdef DCACHE_LUSTRE_INVALID
549 ll_unhash_aliases(de->d_inode);
550 /* done in ll_unhash_aliases()
551 dentry->d_flags |= DCACHE_LUSTRE_INVALID; */
553 /* We do not want d_invalidate to kill all child dentries too */
557 CDEBUG(D_DENTRY, "revalidated dentry %.*s (%p) parent %p "
558 "inode %p refc %d\n", de->d_name.len,
559 de->d_name.name, de, de->d_parent, de->d_inode,
560 atomic_read(&de->d_count));
561 ll_lookup_finish_locks(it, de);
562 #ifdef DCACHE_LUSTRE_INVALID
564 de->d_flags &= ~DCACHE_LUSTRE_INVALID;
569 /* This part is here to combat evil-evil race in real_lookup on 2.6 kernels.
570 * The race details are: We enter do_lookup() looking for some name,
571 * there is nothing in dcache for this name yet and d_lookup() returns NULL.
572 * We proceed to real_lookup(), and while we do this, another process does
573 * open on the same file we looking up (most simple reproducer), open succeeds
574 * and the dentry is added. Now back to us. In real_lookup() we do d_lookup()
575 * again and suddenly find the dentry, so we call d_revalidate on it, but there
576 * is no lock, so without this code we would return 0, but unpatched
577 * real_lookup just returns -ENOENT in such a case instead of retrying the
578 * lookup. Once this is dealt with in real_lookup(), all of this ugly mess
579 * can go and we can just check locks in ->d_revalidate without doing any
582 if (it != &lookup_it) {
583 ll_lookup_finish_locks(it, de);
586 /*do real lookup here */
587 ll_prepare_mdc_op_data(&op_data, parent, NULL,
588 de->d_name.name, de->d_name.len, 0, NULL);
589 rc = mdc_intent_lock(exp, &op_data, NULL, 0, it, 0, &req,
590 ll_mdc_blocking_ast, 0);
592 struct mds_body *mds_body = lustre_msg_buf(req->rq_repmsg,
595 struct ll_fid fid = { 0 };
598 ll_inode2fid(&fid, de->d_inode);
600 /* see if we got same inode, if not - return error */
601 if(!memcmp(&fid, &mds_body->fid1, sizeof(struct ll_fid)))
602 goto revalidate_finish;
603 /* we are going release the intent, so clear DISP_ENQ_COMPLETE
604 * to prevent a double free of the request */
605 it_clear_disposition(it, DISP_ENQ_COMPLETE);
606 ll_intent_release(it);
612 * For rc == 1 case, should not return directly to prevent losing
613 * statahead windows; for rc == 0 case, the "lookup" will be done later.
615 if (it && it->it_op == IT_GETATTR && rc == 1) {
616 first = ll_statahead_enter(parent, &de, 0);
618 ll_statahead_exit(parent, de, 1);
619 else if (first == -EEXIST)
620 ll_statahead_mark(parent, de);
626 /*static*/ void ll_pin(struct dentry *de, struct vfsmount *mnt, int flag)
628 struct inode *inode= de->d_inode;
629 struct ll_sb_info *sbi = ll_i2sbi(inode);
630 struct ll_dentry_data *ldd = ll_d2d(de);
631 struct obd_client_handle *handle;
637 /* Strictly speaking this introduces an additional race: the
638 * increments should wait until the rpc has returned.
639 * However, given that at present the function is void, this
641 if (flag == 1 && (++ldd->lld_mnt_count) > 1) {
647 if (flag == 0 && (++ldd->lld_cwd_count) > 1) {
654 handle = (flag) ? &ldd->lld_mnt_och : &ldd->lld_cwd_och;
655 rc = obd_pin(sbi->ll_mdc_exp, ll_inode_ll_fid(inode),
660 memset(handle, 0, sizeof(*handle));
662 ldd->lld_cwd_count--;
664 ldd->lld_mnt_count--;
672 /*static*/ void ll_unpin(struct dentry *de, struct vfsmount *mnt, int flag)
674 struct ll_sb_info *sbi = ll_i2sbi(de->d_inode);
675 struct ll_dentry_data *ldd = ll_d2d(de);
676 struct obd_client_handle handle;
682 /* Strictly speaking this introduces an additional race: the
683 * increments should wait until the rpc has returned.
684 * However, given that at present the function is void, this
686 handle = (flag) ? ldd->lld_mnt_och : ldd->lld_cwd_och;
687 if (handle.och_magic != OBD_CLIENT_HANDLE_MAGIC) {
688 /* the "pin" failed */
695 count = --ldd->lld_mnt_count;
697 count = --ldd->lld_cwd_count;
705 rc = obd_unpin(sbi->ll_mdc_exp, &handle, flag);
710 #ifdef HAVE_VFS_INTENT_PATCHES
711 int ll_revalidate_nd(struct dentry *dentry, struct nameidata *nd)
716 if (nd && nd->flags & LOOKUP_LAST && !(nd->flags & LOOKUP_LINK_NOTLAST))
717 rc = ll_revalidate_it(dentry, nd->flags, &nd->intent);
719 rc = ll_revalidate_it(dentry, 0, NULL);
724 int ll_revalidate_nd(struct dentry *dentry, struct nameidata *nd)
729 if (nd && !(nd->flags & (LOOKUP_CONTINUE|LOOKUP_PARENT))) {
730 struct lookup_intent *it;
731 it = ll_convert_intent(&nd->intent.open, nd->flags);
734 if (it->it_op == (IT_OPEN|IT_CREAT))
735 if (nd->intent.open.flags & O_EXCL) {
737 "create O_EXCL, returning 0\n");
742 rc = ll_revalidate_it(dentry, nd->flags, it);
744 if (rc && (nd->flags & LOOKUP_OPEN) &&
745 it_disposition(it, DISP_OPEN_OPEN)) {/*Open*/
746 #ifdef HAVE_FILE_IN_STRUCT_INTENT
747 // XXX Code duplication with ll_lookup_nd
748 if (S_ISFIFO(dentry->d_inode->i_mode)) {
749 // We cannot call open here as it would
752 (struct ptlrpc_request *)
753 it->d.lustre.it_data);
755 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
756 /* 2.6.1[456] have a bug in open_namei() that forgets to check
757 * nd->intent.open.file for error, so we need to return it as lookup's result
761 nd->intent.open.file->private_data = it;
762 filp = lookup_instantiate_filp(nd, dentry,NULL);
767 nd->intent.open.file->private_data = it;
768 (void)lookup_instantiate_filp(nd, dentry,NULL);
772 ll_release_openhandle(dentry, it);
773 #endif /* HAVE_FILE_IN_STRUCT_INTENT */
775 if (!rc && (nd->flags & LOOKUP_CREATE) &&
776 it_disposition(it, DISP_OPEN_CREATE)) {
777 /* We created something but we may only return
778 * negative dentry here, so save request in dentry,
779 * if lookup will be called later on, it will
780 * pick the request, otherwise it would be freed
782 ll_d2d(dentry)->lld_it = it;
783 it = NULL; /* avoid freeing */
788 ll_intent_release(it);
789 OBD_FREE(it, sizeof(*it));
792 rc = ll_revalidate_it(dentry, 0, NULL);
799 void ll_d_iput(struct dentry *de, struct inode *inode)
802 if (inode && !find_cbdata(inode))
807 struct dentry_operations ll_d_ops = {
808 .d_revalidate = ll_revalidate_nd,
809 .d_release = ll_release,
810 .d_delete = ll_ddelete,
812 #ifdef DCACHE_LUSTRE_INVALID
813 .d_compare = ll_dcompare,