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ccd979bd MF |
1 | /* -*- mode: c; c-basic-offset: 8; -*- |
2 | * vim: noexpandtab sw=8 ts=8 sts=0: | |
3 | * | |
4 | * dcache.c | |
5 | * | |
6 | * dentry cache handling code | |
7 | * | |
8 | * Copyright (C) 2002, 2004 Oracle. All rights reserved. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public | |
12 | * License as published by the Free Software Foundation; either | |
13 | * version 2 of the License, or (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public | |
21 | * License along with this program; if not, write to the | |
22 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | * Boston, MA 021110-1307, USA. | |
24 | */ | |
25 | ||
26 | #include <linux/fs.h> | |
27 | #include <linux/types.h> | |
28 | #include <linux/slab.h> | |
29 | #include <linux/namei.h> | |
30 | ||
ccd979bd MF |
31 | #include <cluster/masklog.h> |
32 | ||
33 | #include "ocfs2.h" | |
34 | ||
35 | #include "alloc.h" | |
36 | #include "dcache.h" | |
80c05846 | 37 | #include "dlmglue.h" |
ccd979bd MF |
38 | #include "file.h" |
39 | #include "inode.h" | |
ea455f8a | 40 | #include "super.h" |
a5b8443b | 41 | #include "ocfs2_trace.h" |
ccd979bd | 42 | |
5e98d492 GR |
43 | void ocfs2_dentry_attach_gen(struct dentry *dentry) |
44 | { | |
45 | unsigned long gen = | |
46 | OCFS2_I(dentry->d_parent->d_inode)->ip_dir_lock_gen; | |
47 | BUG_ON(dentry->d_inode); | |
48 | dentry->d_fsdata = (void *)gen; | |
49 | } | |
50 | ||
80c05846 | 51 | |
ccd979bd MF |
52 | static int ocfs2_dentry_revalidate(struct dentry *dentry, |
53 | struct nameidata *nd) | |
54 | { | |
34286d66 | 55 | struct inode *inode; |
ccd979bd | 56 | int ret = 0; /* if all else fails, just return false */ |
34286d66 NP |
57 | struct ocfs2_super *osb; |
58 | ||
4714e637 | 59 | if (nd && nd->flags & LOOKUP_RCU) |
34286d66 NP |
60 | return -ECHILD; |
61 | ||
62 | inode = dentry->d_inode; | |
63 | osb = OCFS2_SB(dentry->d_sb); | |
ccd979bd | 64 | |
a5b8443b TM |
65 | trace_ocfs2_dentry_revalidate(dentry, dentry->d_name.len, |
66 | dentry->d_name.name); | |
ccd979bd | 67 | |
5e98d492 GR |
68 | /* For a negative dentry - |
69 | * check the generation number of the parent and compare with the | |
70 | * one stored in the inode. | |
71 | */ | |
ccd979bd | 72 | if (inode == NULL) { |
5e98d492 GR |
73 | unsigned long gen = (unsigned long) dentry->d_fsdata; |
74 | unsigned long pgen = | |
75 | OCFS2_I(dentry->d_parent->d_inode)->ip_dir_lock_gen; | |
a5b8443b TM |
76 | |
77 | trace_ocfs2_dentry_revalidate_negative(dentry->d_name.len, | |
78 | dentry->d_name.name, | |
79 | pgen, gen); | |
5e98d492 GR |
80 | if (gen != pgen) |
81 | goto bail; | |
82 | goto valid; | |
ccd979bd MF |
83 | } |
84 | ||
ccd979bd MF |
85 | BUG_ON(!osb); |
86 | ||
80c05846 MF |
87 | if (inode == osb->root_inode || is_bad_inode(inode)) |
88 | goto bail; | |
89 | ||
90 | spin_lock(&OCFS2_I(inode)->ip_lock); | |
91 | /* did we or someone else delete this inode? */ | |
92 | if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED) { | |
ccd979bd | 93 | spin_unlock(&OCFS2_I(inode)->ip_lock); |
a5b8443b TM |
94 | trace_ocfs2_dentry_revalidate_delete( |
95 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
80c05846 MF |
96 | goto bail; |
97 | } | |
98 | spin_unlock(&OCFS2_I(inode)->ip_lock); | |
ccd979bd | 99 | |
80c05846 MF |
100 | /* |
101 | * We don't need a cluster lock to test this because once an | |
102 | * inode nlink hits zero, it never goes back. | |
103 | */ | |
104 | if (inode->i_nlink == 0) { | |
a5b8443b TM |
105 | trace_ocfs2_dentry_revalidate_orphaned( |
106 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
107 | S_ISDIR(inode->i_mode)); | |
80c05846 | 108 | goto bail; |
ccd979bd MF |
109 | } |
110 | ||
a1b08e75 TM |
111 | /* |
112 | * If the last lookup failed to create dentry lock, let us | |
113 | * redo it. | |
114 | */ | |
115 | if (!dentry->d_fsdata) { | |
a5b8443b TM |
116 | trace_ocfs2_dentry_revalidate_nofsdata( |
117 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
a1b08e75 TM |
118 | goto bail; |
119 | } | |
120 | ||
5e98d492 | 121 | valid: |
ccd979bd MF |
122 | ret = 1; |
123 | ||
124 | bail: | |
a5b8443b | 125 | trace_ocfs2_dentry_revalidate_ret(ret); |
ccd979bd MF |
126 | return ret; |
127 | } | |
128 | ||
80c05846 MF |
129 | static int ocfs2_match_dentry(struct dentry *dentry, |
130 | u64 parent_blkno, | |
131 | int skip_unhashed) | |
132 | { | |
133 | struct inode *parent; | |
134 | ||
135 | /* | |
136 | * ocfs2_lookup() does a d_splice_alias() _before_ attaching | |
137 | * to the lock data, so we skip those here, otherwise | |
138 | * ocfs2_dentry_attach_lock() will get its original dentry | |
139 | * back. | |
140 | */ | |
141 | if (!dentry->d_fsdata) | |
142 | return 0; | |
143 | ||
144 | if (!dentry->d_parent) | |
145 | return 0; | |
146 | ||
147 | if (skip_unhashed && d_unhashed(dentry)) | |
148 | return 0; | |
149 | ||
150 | parent = dentry->d_parent->d_inode; | |
151 | /* Negative parent dentry? */ | |
152 | if (!parent) | |
153 | return 0; | |
154 | ||
155 | /* Name is in a different directory. */ | |
156 | if (OCFS2_I(parent)->ip_blkno != parent_blkno) | |
157 | return 0; | |
158 | ||
159 | return 1; | |
160 | } | |
161 | ||
162 | /* | |
163 | * Walk the inode alias list, and find a dentry which has a given | |
164 | * parent. ocfs2_dentry_attach_lock() wants to find _any_ alias as it | |
34d024f8 MF |
165 | * is looking for a dentry_lock reference. The downconvert thread is |
166 | * looking to unhash aliases, so we allow it to skip any that already | |
167 | * have that property. | |
80c05846 MF |
168 | */ |
169 | struct dentry *ocfs2_find_local_alias(struct inode *inode, | |
170 | u64 parent_blkno, | |
171 | int skip_unhashed) | |
172 | { | |
173 | struct list_head *p; | |
174 | struct dentry *dentry = NULL; | |
175 | ||
873feea0 | 176 | spin_lock(&inode->i_lock); |
80c05846 MF |
177 | list_for_each(p, &inode->i_dentry) { |
178 | dentry = list_entry(p, struct dentry, d_alias); | |
179 | ||
da502956 | 180 | spin_lock(&dentry->d_lock); |
80c05846 | 181 | if (ocfs2_match_dentry(dentry, parent_blkno, skip_unhashed)) { |
a5b8443b TM |
182 | trace_ocfs2_find_local_alias(dentry->d_name.len, |
183 | dentry->d_name.name); | |
80c05846 | 184 | |
dc0474be | 185 | dget_dlock(dentry); |
da502956 | 186 | spin_unlock(&dentry->d_lock); |
80c05846 MF |
187 | break; |
188 | } | |
da502956 | 189 | spin_unlock(&dentry->d_lock); |
80c05846 MF |
190 | |
191 | dentry = NULL; | |
192 | } | |
193 | ||
873feea0 | 194 | spin_unlock(&inode->i_lock); |
80c05846 MF |
195 | |
196 | return dentry; | |
197 | } | |
198 | ||
d680efe9 MF |
199 | DEFINE_SPINLOCK(dentry_attach_lock); |
200 | ||
80c05846 MF |
201 | /* |
202 | * Attach this dentry to a cluster lock. | |
203 | * | |
204 | * Dentry locks cover all links in a given directory to a particular | |
205 | * inode. We do this so that ocfs2 can build a lock name which all | |
206 | * nodes in the cluster can agree on at all times. Shoving full names | |
207 | * in the cluster lock won't work due to size restrictions. Covering | |
208 | * links inside of a directory is a good compromise because it still | |
209 | * allows us to use the parent directory lock to synchronize | |
210 | * operations. | |
211 | * | |
212 | * Call this function with the parent dir semaphore and the parent dir | |
213 | * cluster lock held. | |
214 | * | |
215 | * The dir semaphore will protect us from having to worry about | |
216 | * concurrent processes on our node trying to attach a lock at the | |
217 | * same time. | |
218 | * | |
219 | * The dir cluster lock (held at either PR or EX mode) protects us | |
220 | * from unlink and rename on other nodes. | |
221 | * | |
80c05846 MF |
222 | * A dput() can happen asynchronously due to pruning, so we cover |
223 | * attaching and detaching the dentry lock with a | |
224 | * dentry_attach_lock. | |
225 | * | |
226 | * A node which has done lookup on a name retains a protected read | |
227 | * lock until final dput. If the user requests and unlink or rename, | |
228 | * the protected read is upgraded to an exclusive lock. Other nodes | |
229 | * who have seen the dentry will then be informed that they need to | |
230 | * downgrade their lock, which will involve d_delete on the | |
231 | * dentry. This happens in ocfs2_dentry_convert_worker(). | |
232 | */ | |
233 | int ocfs2_dentry_attach_lock(struct dentry *dentry, | |
234 | struct inode *inode, | |
0027dd5b | 235 | u64 parent_blkno) |
80c05846 MF |
236 | { |
237 | int ret; | |
238 | struct dentry *alias; | |
239 | struct ocfs2_dentry_lock *dl = dentry->d_fsdata; | |
240 | ||
a5b8443b TM |
241 | trace_ocfs2_dentry_attach_lock(dentry->d_name.len, dentry->d_name.name, |
242 | (unsigned long long)parent_blkno, dl); | |
80c05846 MF |
243 | |
244 | /* | |
245 | * Negative dentry. We ignore these for now. | |
246 | * | |
247 | * XXX: Could we can improve ocfs2_dentry_revalidate() by | |
248 | * tracking these? | |
249 | */ | |
250 | if (!inode) | |
251 | return 0; | |
252 | ||
5e98d492 GR |
253 | if (!dentry->d_inode && dentry->d_fsdata) { |
254 | /* Converting a negative dentry to positive | |
255 | Clear dentry->d_fsdata */ | |
256 | dentry->d_fsdata = dl = NULL; | |
257 | } | |
258 | ||
80c05846 MF |
259 | if (dl) { |
260 | mlog_bug_on_msg(dl->dl_parent_blkno != parent_blkno, | |
261 | " \"%.*s\": old parent: %llu, new: %llu\n", | |
262 | dentry->d_name.len, dentry->d_name.name, | |
263 | (unsigned long long)parent_blkno, | |
264 | (unsigned long long)dl->dl_parent_blkno); | |
265 | return 0; | |
266 | } | |
267 | ||
268 | alias = ocfs2_find_local_alias(inode, parent_blkno, 0); | |
269 | if (alias) { | |
270 | /* | |
271 | * Great, an alias exists, which means we must have a | |
272 | * dentry lock already. We can just grab the lock off | |
273 | * the alias and add it to the list. | |
274 | * | |
275 | * We're depending here on the fact that this dentry | |
276 | * was found and exists in the dcache and so must have | |
277 | * a reference to the dentry_lock because we can't | |
278 | * race creates. Final dput() cannot happen on it | |
279 | * since we have it pinned, so our reference is safe. | |
280 | */ | |
281 | dl = alias->d_fsdata; | |
0027dd5b | 282 | mlog_bug_on_msg(!dl, "parent %llu, ino %llu\n", |
80c05846 | 283 | (unsigned long long)parent_blkno, |
0027dd5b | 284 | (unsigned long long)OCFS2_I(inode)->ip_blkno); |
80c05846 MF |
285 | |
286 | mlog_bug_on_msg(dl->dl_parent_blkno != parent_blkno, | |
287 | " \"%.*s\": old parent: %llu, new: %llu\n", | |
288 | dentry->d_name.len, dentry->d_name.name, | |
289 | (unsigned long long)parent_blkno, | |
290 | (unsigned long long)dl->dl_parent_blkno); | |
291 | ||
a5b8443b TM |
292 | trace_ocfs2_dentry_attach_lock_found(dl->dl_lockres.l_name, |
293 | (unsigned long long)parent_blkno, | |
294 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
80c05846 MF |
295 | |
296 | goto out_attach; | |
297 | } | |
298 | ||
299 | /* | |
300 | * There are no other aliases | |
301 | */ | |
302 | dl = kmalloc(sizeof(*dl), GFP_NOFS); | |
303 | if (!dl) { | |
304 | ret = -ENOMEM; | |
305 | mlog_errno(ret); | |
306 | return ret; | |
307 | } | |
308 | ||
309 | dl->dl_count = 0; | |
310 | /* | |
311 | * Does this have to happen below, for all attaches, in case | |
34d024f8 | 312 | * the struct inode gets blown away by the downconvert thread? |
80c05846 MF |
313 | */ |
314 | dl->dl_inode = igrab(inode); | |
315 | dl->dl_parent_blkno = parent_blkno; | |
316 | ocfs2_dentry_lock_res_init(dl, parent_blkno, inode); | |
317 | ||
318 | out_attach: | |
319 | spin_lock(&dentry_attach_lock); | |
320 | dentry->d_fsdata = dl; | |
321 | dl->dl_count++; | |
322 | spin_unlock(&dentry_attach_lock); | |
323 | ||
80c05846 MF |
324 | /* |
325 | * This actually gets us our PRMODE level lock. From now on, | |
326 | * we'll have a notification if one of these names is | |
327 | * destroyed on another node. | |
328 | */ | |
329 | ret = ocfs2_dentry_lock(dentry, 0); | |
0027dd5b MF |
330 | if (!ret) |
331 | ocfs2_dentry_unlock(dentry, 0); | |
332 | else | |
80c05846 | 333 | mlog_errno(ret); |
80c05846 | 334 | |
a5a0a630 SM |
335 | /* |
336 | * In case of error, manually free the allocation and do the iput(). | |
337 | * We need to do this because error here means no d_instantiate(), | |
338 | * which means iput() will not be called during dput(dentry). | |
339 | */ | |
340 | if (ret < 0 && !alias) { | |
341 | ocfs2_lock_res_free(&dl->dl_lockres); | |
342 | BUG_ON(dl->dl_count != 1); | |
343 | spin_lock(&dentry_attach_lock); | |
344 | dentry->d_fsdata = NULL; | |
345 | spin_unlock(&dentry_attach_lock); | |
346 | kfree(dl); | |
347 | iput(inode); | |
348 | } | |
349 | ||
80c05846 MF |
350 | dput(alias); |
351 | ||
352 | return ret; | |
353 | } | |
354 | ||
f7b1aa69 | 355 | DEFINE_SPINLOCK(dentry_list_lock); |
ea455f8a JK |
356 | |
357 | /* We limit the number of dentry locks to drop in one go. We have | |
358 | * this limit so that we don't starve other users of ocfs2_wq. */ | |
359 | #define DL_INODE_DROP_COUNT 64 | |
360 | ||
361 | /* Drop inode references from dentry locks */ | |
f7b1aa69 | 362 | static void __ocfs2_drop_dl_inodes(struct ocfs2_super *osb, int drop_count) |
ea455f8a | 363 | { |
ea455f8a | 364 | struct ocfs2_dentry_lock *dl; |
ea455f8a JK |
365 | |
366 | spin_lock(&dentry_list_lock); | |
f7b1aa69 | 367 | while (osb->dentry_lock_list && (drop_count < 0 || drop_count--)) { |
ea455f8a JK |
368 | dl = osb->dentry_lock_list; |
369 | osb->dentry_lock_list = dl->dl_next; | |
370 | spin_unlock(&dentry_list_lock); | |
371 | iput(dl->dl_inode); | |
372 | kfree(dl); | |
373 | spin_lock(&dentry_list_lock); | |
374 | } | |
f7b1aa69 JK |
375 | spin_unlock(&dentry_list_lock); |
376 | } | |
377 | ||
378 | void ocfs2_drop_dl_inodes(struct work_struct *work) | |
379 | { | |
380 | struct ocfs2_super *osb = container_of(work, struct ocfs2_super, | |
381 | dentry_lock_work); | |
382 | ||
383 | __ocfs2_drop_dl_inodes(osb, DL_INODE_DROP_COUNT); | |
384 | /* | |
385 | * Don't queue dropping if umount is in progress. We flush the | |
386 | * list in ocfs2_dismount_volume | |
387 | */ | |
388 | spin_lock(&dentry_list_lock); | |
389 | if (osb->dentry_lock_list && | |
390 | !ocfs2_test_osb_flag(osb, OCFS2_OSB_DROP_DENTRY_LOCK_IMMED)) | |
ea455f8a JK |
391 | queue_work(ocfs2_wq, &osb->dentry_lock_work); |
392 | spin_unlock(&dentry_list_lock); | |
393 | } | |
394 | ||
f7b1aa69 JK |
395 | /* Flush the whole work queue */ |
396 | void ocfs2_drop_all_dl_inodes(struct ocfs2_super *osb) | |
397 | { | |
398 | __ocfs2_drop_dl_inodes(osb, -1); | |
399 | } | |
400 | ||
80c05846 MF |
401 | /* |
402 | * ocfs2_dentry_iput() and friends. | |
403 | * | |
404 | * At this point, our particular dentry is detached from the inodes | |
405 | * alias list, so there's no way that the locking code can find it. | |
406 | * | |
407 | * The interesting stuff happens when we determine that our lock needs | |
408 | * to go away because this is the last subdir alias in the | |
409 | * system. This function needs to handle a couple things: | |
410 | * | |
411 | * 1) Synchronizing lock shutdown with the downconvert threads. This | |
412 | * is already handled for us via the lockres release drop function | |
413 | * called in ocfs2_release_dentry_lock() | |
414 | * | |
415 | * 2) A race may occur when we're doing our lock shutdown and | |
416 | * another process wants to create a new dentry lock. Right now we | |
417 | * let them race, which means that for a very short while, this | |
418 | * node might have two locks on a lock resource. This should be a | |
419 | * problem though because one of them is in the process of being | |
420 | * thrown out. | |
421 | */ | |
422 | static void ocfs2_drop_dentry_lock(struct ocfs2_super *osb, | |
423 | struct ocfs2_dentry_lock *dl) | |
424 | { | |
425 | ocfs2_simple_drop_lockres(osb, &dl->dl_lockres); | |
426 | ocfs2_lock_res_free(&dl->dl_lockres); | |
ea455f8a JK |
427 | |
428 | /* We leave dropping of inode reference to ocfs2_wq as that can | |
429 | * possibly lead to inode deletion which gets tricky */ | |
430 | spin_lock(&dentry_list_lock); | |
f7b1aa69 JK |
431 | if (!osb->dentry_lock_list && |
432 | !ocfs2_test_osb_flag(osb, OCFS2_OSB_DROP_DENTRY_LOCK_IMMED)) | |
ea455f8a JK |
433 | queue_work(ocfs2_wq, &osb->dentry_lock_work); |
434 | dl->dl_next = osb->dentry_lock_list; | |
435 | osb->dentry_lock_list = dl; | |
436 | spin_unlock(&dentry_list_lock); | |
80c05846 MF |
437 | } |
438 | ||
439 | void ocfs2_dentry_lock_put(struct ocfs2_super *osb, | |
440 | struct ocfs2_dentry_lock *dl) | |
441 | { | |
ea455f8a | 442 | int unlock; |
80c05846 MF |
443 | |
444 | BUG_ON(dl->dl_count == 0); | |
445 | ||
446 | spin_lock(&dentry_attach_lock); | |
447 | dl->dl_count--; | |
448 | unlock = !dl->dl_count; | |
449 | spin_unlock(&dentry_attach_lock); | |
450 | ||
451 | if (unlock) | |
452 | ocfs2_drop_dentry_lock(osb, dl); | |
453 | } | |
454 | ||
455 | static void ocfs2_dentry_iput(struct dentry *dentry, struct inode *inode) | |
456 | { | |
457 | struct ocfs2_dentry_lock *dl = dentry->d_fsdata; | |
458 | ||
bccb9dad MF |
459 | if (!dl) { |
460 | /* | |
461 | * No dentry lock is ok if we're disconnected or | |
462 | * unhashed. | |
463 | */ | |
464 | if (!(dentry->d_flags & DCACHE_DISCONNECTED) && | |
465 | !d_unhashed(dentry)) { | |
466 | unsigned long long ino = 0ULL; | |
467 | if (inode) | |
468 | ino = (unsigned long long)OCFS2_I(inode)->ip_blkno; | |
469 | mlog(ML_ERROR, "Dentry is missing cluster lock. " | |
470 | "inode: %llu, d_flags: 0x%x, d_name: %.*s\n", | |
471 | ino, dentry->d_flags, dentry->d_name.len, | |
472 | dentry->d_name.name); | |
473 | } | |
80c05846 | 474 | |
80c05846 | 475 | goto out; |
bccb9dad | 476 | } |
80c05846 MF |
477 | |
478 | mlog_bug_on_msg(dl->dl_count == 0, "dentry: %.*s, count: %u\n", | |
479 | dentry->d_name.len, dentry->d_name.name, | |
480 | dl->dl_count); | |
481 | ||
482 | ocfs2_dentry_lock_put(OCFS2_SB(dentry->d_sb), dl); | |
483 | ||
484 | out: | |
485 | iput(inode); | |
486 | } | |
487 | ||
488 | /* | |
489 | * d_move(), but keep the locks in sync. | |
490 | * | |
491 | * When we are done, "dentry" will have the parent dir and name of | |
492 | * "target", which will be thrown away. | |
493 | * | |
494 | * We manually update the lock of "dentry" if need be. | |
495 | * | |
496 | * "target" doesn't have it's dentry lock touched - we allow the later | |
497 | * dput() to handle this for us. | |
498 | * | |
499 | * This is called during ocfs2_rename(), while holding parent | |
500 | * directory locks. The dentries have already been deleted on other | |
501 | * nodes via ocfs2_remote_dentry_delete(). | |
502 | * | |
3a4fa0a2 | 503 | * Normally, the VFS handles the d_move() for the file system, after |
80c05846 MF |
504 | * the ->rename() callback. OCFS2 wants to handle this internally, so |
505 | * the new lock can be created atomically with respect to the cluster. | |
506 | */ | |
507 | void ocfs2_dentry_move(struct dentry *dentry, struct dentry *target, | |
508 | struct inode *old_dir, struct inode *new_dir) | |
509 | { | |
510 | int ret; | |
511 | struct ocfs2_super *osb = OCFS2_SB(old_dir->i_sb); | |
512 | struct inode *inode = dentry->d_inode; | |
513 | ||
514 | /* | |
515 | * Move within the same directory, so the actual lock info won't | |
516 | * change. | |
517 | * | |
518 | * XXX: Is there any advantage to dropping the lock here? | |
519 | */ | |
520 | if (old_dir == new_dir) | |
1ba9da2f | 521 | goto out_move; |
80c05846 MF |
522 | |
523 | ocfs2_dentry_lock_put(osb, dentry->d_fsdata); | |
524 | ||
525 | dentry->d_fsdata = NULL; | |
0027dd5b | 526 | ret = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(new_dir)->ip_blkno); |
80c05846 MF |
527 | if (ret) |
528 | mlog_errno(ret); | |
1ba9da2f MF |
529 | |
530 | out_move: | |
531 | d_move(dentry, target); | |
80c05846 MF |
532 | } |
533 | ||
d8fba0ff | 534 | const struct dentry_operations ocfs2_dentry_ops = { |
ccd979bd | 535 | .d_revalidate = ocfs2_dentry_revalidate, |
80c05846 | 536 | .d_iput = ocfs2_dentry_iput, |
ccd979bd | 537 | }; |