xref: /openbmc/linux/fs/ocfs2/inode.c (revision e868d61272caa648214046a096e5a6bfc068dc8c)
1 /* -*- mode: c; c-basic-offset: 8; -*-
2  * vim: noexpandtab sw=8 ts=8 sts=0:
3  *
4  * inode.c
5  *
6  * vfs' aops, fops, dops and iops
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/highmem.h>
30 #include <linux/pagemap.h>
31 
32 #include <asm/byteorder.h>
33 
34 #define MLOG_MASK_PREFIX ML_INODE
35 #include <cluster/masklog.h>
36 
37 #include "ocfs2.h"
38 
39 #include "alloc.h"
40 #include "dlmglue.h"
41 #include "extent_map.h"
42 #include "file.h"
43 #include "heartbeat.h"
44 #include "inode.h"
45 #include "journal.h"
46 #include "namei.h"
47 #include "suballoc.h"
48 #include "super.h"
49 #include "symlink.h"
50 #include "sysfile.h"
51 #include "uptodate.h"
52 #include "vote.h"
53 
54 #include "buffer_head_io.h"
55 
56 struct ocfs2_find_inode_args
57 {
58 	u64		fi_blkno;
59 	unsigned long	fi_ino;
60 	unsigned int	fi_flags;
61 };
62 
63 static int ocfs2_read_locked_inode(struct inode *inode,
64 				   struct ocfs2_find_inode_args *args);
65 static int ocfs2_init_locked_inode(struct inode *inode, void *opaque);
66 static int ocfs2_find_actor(struct inode *inode, void *opaque);
67 static int ocfs2_truncate_for_delete(struct ocfs2_super *osb,
68 				    struct inode *inode,
69 				    struct buffer_head *fe_bh);
70 
71 void ocfs2_set_inode_flags(struct inode *inode)
72 {
73 	unsigned int flags = OCFS2_I(inode)->ip_attr;
74 
75 	inode->i_flags &= ~(S_IMMUTABLE |
76 		S_SYNC | S_APPEND | S_NOATIME | S_DIRSYNC);
77 
78 	if (flags & OCFS2_IMMUTABLE_FL)
79 		inode->i_flags |= S_IMMUTABLE;
80 
81 	if (flags & OCFS2_SYNC_FL)
82 		inode->i_flags |= S_SYNC;
83 	if (flags & OCFS2_APPEND_FL)
84 		inode->i_flags |= S_APPEND;
85 	if (flags & OCFS2_NOATIME_FL)
86 		inode->i_flags |= S_NOATIME;
87 	if (flags & OCFS2_DIRSYNC_FL)
88 		inode->i_flags |= S_DIRSYNC;
89 }
90 
91 /* Propagate flags from i_flags to OCFS2_I(inode)->ip_attr */
92 void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi)
93 {
94 	unsigned int flags = oi->vfs_inode.i_flags;
95 
96 	oi->ip_attr &= ~(OCFS2_SYNC_FL|OCFS2_APPEND_FL|
97 			OCFS2_IMMUTABLE_FL|OCFS2_NOATIME_FL|OCFS2_DIRSYNC_FL);
98 	if (flags & S_SYNC)
99 		oi->ip_attr |= OCFS2_SYNC_FL;
100 	if (flags & S_APPEND)
101 		oi->ip_attr |= OCFS2_APPEND_FL;
102 	if (flags & S_IMMUTABLE)
103 		oi->ip_attr |= OCFS2_IMMUTABLE_FL;
104 	if (flags & S_NOATIME)
105 		oi->ip_attr |= OCFS2_NOATIME_FL;
106 	if (flags & S_DIRSYNC)
107 		oi->ip_attr |= OCFS2_DIRSYNC_FL;
108 }
109 
110 struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 blkno, int flags)
111 {
112 	struct inode *inode = NULL;
113 	struct super_block *sb = osb->sb;
114 	struct ocfs2_find_inode_args args;
115 
116 	mlog_entry("(blkno = %llu)\n", (unsigned long long)blkno);
117 
118 	/* Ok. By now we've either got the offsets passed to us by the
119 	 * caller, or we just pulled them off the bh. Lets do some
120 	 * sanity checks to make sure they're OK. */
121 	if (blkno == 0) {
122 		inode = ERR_PTR(-EINVAL);
123 		mlog_errno(PTR_ERR(inode));
124 		goto bail;
125 	}
126 
127 	args.fi_blkno = blkno;
128 	args.fi_flags = flags;
129 	args.fi_ino = ino_from_blkno(sb, blkno);
130 
131 	inode = iget5_locked(sb, args.fi_ino, ocfs2_find_actor,
132 			     ocfs2_init_locked_inode, &args);
133 	/* inode was *not* in the inode cache. 2.6.x requires
134 	 * us to do our own read_inode call and unlock it
135 	 * afterwards. */
136 	if (inode && inode->i_state & I_NEW) {
137 		mlog(0, "Inode was not in inode cache, reading it.\n");
138 		ocfs2_read_locked_inode(inode, &args);
139 		unlock_new_inode(inode);
140 	}
141 	if (inode == NULL) {
142 		inode = ERR_PTR(-ENOMEM);
143 		mlog_errno(PTR_ERR(inode));
144 		goto bail;
145 	}
146 	if (is_bad_inode(inode)) {
147 		iput(inode);
148 		inode = ERR_PTR(-ESTALE);
149 		goto bail;
150 	}
151 
152 bail:
153 	if (!IS_ERR(inode)) {
154 		mlog(0, "returning inode with number %llu\n",
155 		     (unsigned long long)OCFS2_I(inode)->ip_blkno);
156 		mlog_exit_ptr(inode);
157 	}
158 
159 	return inode;
160 }
161 
162 
163 /*
164  * here's how inodes get read from disk:
165  * iget5_locked -> find_actor -> OCFS2_FIND_ACTOR
166  * found? : return the in-memory inode
167  * not found? : get_new_inode -> OCFS2_INIT_LOCKED_INODE
168  */
169 
170 static int ocfs2_find_actor(struct inode *inode, void *opaque)
171 {
172 	struct ocfs2_find_inode_args *args = NULL;
173 	struct ocfs2_inode_info *oi = OCFS2_I(inode);
174 	int ret = 0;
175 
176 	mlog_entry("(0x%p, %lu, 0x%p)\n", inode, inode->i_ino, opaque);
177 
178 	args = opaque;
179 
180 	mlog_bug_on_msg(!inode, "No inode in find actor!\n");
181 
182 	if (oi->ip_blkno != args->fi_blkno)
183 		goto bail;
184 
185 	ret = 1;
186 bail:
187 	mlog_exit(ret);
188 	return ret;
189 }
190 
191 /*
192  * initialize the new inode, but don't do anything that would cause
193  * us to sleep.
194  * return 0 on success, 1 on failure
195  */
196 static int ocfs2_init_locked_inode(struct inode *inode, void *opaque)
197 {
198 	struct ocfs2_find_inode_args *args = opaque;
199 
200 	mlog_entry("inode = %p, opaque = %p\n", inode, opaque);
201 
202 	inode->i_ino = args->fi_ino;
203 	OCFS2_I(inode)->ip_blkno = args->fi_blkno;
204 
205 	mlog_exit(0);
206 	return 0;
207 }
208 
209 int ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
210 		     	 int create_ino)
211 {
212 	struct super_block *sb;
213 	struct ocfs2_super *osb;
214 	int status = -EINVAL;
215 
216 	mlog_entry("(0x%p, size:%llu)\n", inode,
217 		   (unsigned long long)le64_to_cpu(fe->i_size));
218 
219 	sb = inode->i_sb;
220 	osb = OCFS2_SB(sb);
221 
222 	/* this means that read_inode cannot create a superblock inode
223 	 * today.  change if needed. */
224 	if (!OCFS2_IS_VALID_DINODE(fe) ||
225 	    !(fe->i_flags & cpu_to_le32(OCFS2_VALID_FL))) {
226 		mlog(0, "Invalid dinode: i_ino=%lu, i_blkno=%llu, "
227 		     "signature = %.*s, flags = 0x%x\n",
228 		     inode->i_ino,
229 		     (unsigned long long)le64_to_cpu(fe->i_blkno), 7,
230 		     fe->i_signature, le32_to_cpu(fe->i_flags));
231 		goto bail;
232 	}
233 
234 	if (le32_to_cpu(fe->i_fs_generation) != osb->fs_generation) {
235 		mlog(ML_ERROR, "file entry generation does not match "
236 		     "superblock! osb->fs_generation=%x, "
237 		     "fe->i_fs_generation=%x\n",
238 		     osb->fs_generation, le32_to_cpu(fe->i_fs_generation));
239 		goto bail;
240 	}
241 
242 	OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
243 	OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr);
244 
245 	inode->i_version = 1;
246 	inode->i_generation = le32_to_cpu(fe->i_generation);
247 	inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev));
248 	inode->i_mode = le16_to_cpu(fe->i_mode);
249 	inode->i_uid = le32_to_cpu(fe->i_uid);
250 	inode->i_gid = le32_to_cpu(fe->i_gid);
251 
252 	/* Fast symlinks will have i_size but no allocated clusters. */
253 	if (S_ISLNK(inode->i_mode) && !fe->i_clusters)
254 		inode->i_blocks = 0;
255 	else
256 		inode->i_blocks = ocfs2_inode_sector_count(inode);
257 	inode->i_mapping->a_ops = &ocfs2_aops;
258 	inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime);
259 	inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec);
260 	inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime);
261 	inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec);
262 	inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime);
263 	inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec);
264 
265 	if (OCFS2_I(inode)->ip_blkno != le64_to_cpu(fe->i_blkno))
266 		mlog(ML_ERROR,
267 		     "ip_blkno %llu != i_blkno %llu!\n",
268 		     (unsigned long long)OCFS2_I(inode)->ip_blkno,
269 		     (unsigned long long)le64_to_cpu(fe->i_blkno));
270 
271 	inode->i_nlink = le16_to_cpu(fe->i_links_count);
272 
273 	if (fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL))
274 		OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SYSTEM_FILE;
275 
276 	if (fe->i_flags & cpu_to_le32(OCFS2_LOCAL_ALLOC_FL)) {
277 		OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP;
278 		mlog(0, "local alloc inode: i_ino=%lu\n", inode->i_ino);
279 	} else if (fe->i_flags & cpu_to_le32(OCFS2_BITMAP_FL)) {
280 		OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP;
281 	} else if (fe->i_flags & cpu_to_le32(OCFS2_SUPER_BLOCK_FL)) {
282 		mlog(0, "superblock inode: i_ino=%lu\n", inode->i_ino);
283 		/* we can't actually hit this as read_inode can't
284 		 * handle superblocks today ;-) */
285 		BUG();
286 	}
287 
288 	switch (inode->i_mode & S_IFMT) {
289 	    case S_IFREG:
290 		    inode->i_fop = &ocfs2_fops;
291 		    inode->i_op = &ocfs2_file_iops;
292 		    i_size_write(inode, le64_to_cpu(fe->i_size));
293 		    break;
294 	    case S_IFDIR:
295 		    inode->i_op = &ocfs2_dir_iops;
296 		    inode->i_fop = &ocfs2_dops;
297 		    i_size_write(inode, le64_to_cpu(fe->i_size));
298 		    break;
299 	    case S_IFLNK:
300 		    if (ocfs2_inode_is_fast_symlink(inode))
301 			inode->i_op = &ocfs2_fast_symlink_inode_operations;
302 		    else
303 			inode->i_op = &ocfs2_symlink_inode_operations;
304 		    i_size_write(inode, le64_to_cpu(fe->i_size));
305 		    break;
306 	    default:
307 		    inode->i_op = &ocfs2_special_file_iops;
308 		    init_special_inode(inode, inode->i_mode,
309 				       inode->i_rdev);
310 		    break;
311 	}
312 
313 	if (create_ino) {
314 		inode->i_ino = ino_from_blkno(inode->i_sb,
315 			       le64_to_cpu(fe->i_blkno));
316 
317 		/*
318 		 * If we ever want to create system files from kernel,
319 		 * the generation argument to
320 		 * ocfs2_inode_lock_res_init() will have to change.
321 		 */
322 		BUG_ON(le32_to_cpu(fe->i_flags) & OCFS2_SYSTEM_FL);
323 
324 		ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_meta_lockres,
325 					  OCFS2_LOCK_TYPE_META, 0, inode);
326 
327 		ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_open_lockres,
328 					  OCFS2_LOCK_TYPE_OPEN, 0, inode);
329 	}
330 
331 	ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_rw_lockres,
332 				  OCFS2_LOCK_TYPE_RW, inode->i_generation,
333 				  inode);
334 
335 	ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_data_lockres,
336 				  OCFS2_LOCK_TYPE_DATA, inode->i_generation,
337 				  inode);
338 
339 	ocfs2_set_inode_flags(inode);
340 
341 	status = 0;
342 bail:
343 	mlog_exit(status);
344 	return status;
345 }
346 
347 static int ocfs2_read_locked_inode(struct inode *inode,
348 				   struct ocfs2_find_inode_args *args)
349 {
350 	struct super_block *sb;
351 	struct ocfs2_super *osb;
352 	struct ocfs2_dinode *fe;
353 	struct buffer_head *bh = NULL;
354 	int status, can_lock;
355 	u32 generation = 0;
356 
357 	mlog_entry("(0x%p, 0x%p)\n", inode, args);
358 
359 	status = -EINVAL;
360 	if (inode == NULL || inode->i_sb == NULL) {
361 		mlog(ML_ERROR, "bad inode\n");
362 		return status;
363 	}
364 	sb = inode->i_sb;
365 	osb = OCFS2_SB(sb);
366 
367 	if (!args) {
368 		mlog(ML_ERROR, "bad inode args\n");
369 		make_bad_inode(inode);
370 		return status;
371 	}
372 
373 	/*
374 	 * To improve performance of cold-cache inode stats, we take
375 	 * the cluster lock here if possible.
376 	 *
377 	 * Generally, OCFS2 never trusts the contents of an inode
378 	 * unless it's holding a cluster lock, so taking it here isn't
379 	 * a correctness issue as much as it is a performance
380 	 * improvement.
381 	 *
382 	 * There are three times when taking the lock is not a good idea:
383 	 *
384 	 * 1) During startup, before we have initialized the DLM.
385 	 *
386 	 * 2) If we are reading certain system files which never get
387 	 *    cluster locks (local alloc, truncate log).
388 	 *
389 	 * 3) If the process doing the iget() is responsible for
390 	 *    orphan dir recovery. We're holding the orphan dir lock and
391 	 *    can get into a deadlock with another process on another
392 	 *    node in ->delete_inode().
393 	 *
394 	 * #1 and #2 can be simply solved by never taking the lock
395 	 * here for system files (which are the only type we read
396 	 * during mount). It's a heavier approach, but our main
397 	 * concern is user-accesible files anyway.
398 	 *
399 	 * #3 works itself out because we'll eventually take the
400 	 * cluster lock before trusting anything anyway.
401 	 */
402 	can_lock = !(args->fi_flags & OCFS2_FI_FLAG_SYSFILE)
403 		&& !(args->fi_flags & OCFS2_FI_FLAG_ORPHAN_RECOVERY)
404 		&& !ocfs2_mount_local(osb);
405 
406 	/*
407 	 * To maintain backwards compatibility with older versions of
408 	 * ocfs2-tools, we still store the generation value for system
409 	 * files. The only ones that actually matter to userspace are
410 	 * the journals, but it's easier and inexpensive to just flag
411 	 * all system files similarly.
412 	 */
413 	if (args->fi_flags & OCFS2_FI_FLAG_SYSFILE)
414 		generation = osb->fs_generation;
415 
416 	ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_meta_lockres,
417 				  OCFS2_LOCK_TYPE_META,
418 				  generation, inode);
419 
420 	ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_open_lockres,
421 				  OCFS2_LOCK_TYPE_OPEN,
422 				  0, inode);
423 
424 	if (can_lock) {
425 		status = ocfs2_open_lock(inode);
426 		if (status) {
427 			make_bad_inode(inode);
428 			mlog_errno(status);
429 			return status;
430 		}
431 		status = ocfs2_meta_lock(inode, NULL, 0);
432 		if (status) {
433 			make_bad_inode(inode);
434 			mlog_errno(status);
435 			return status;
436 		}
437 	}
438 
439 	if (args->fi_flags & OCFS2_FI_FLAG_ORPHAN_RECOVERY) {
440 		status = ocfs2_try_open_lock(inode, 0);
441 		if (status) {
442 			make_bad_inode(inode);
443 			return status;
444 		}
445 	}
446 
447 	status = ocfs2_read_block(osb, args->fi_blkno, &bh, 0,
448 				  can_lock ? inode : NULL);
449 	if (status < 0) {
450 		mlog_errno(status);
451 		goto bail;
452 	}
453 
454 	status = -EINVAL;
455 	fe = (struct ocfs2_dinode *) bh->b_data;
456 	if (!OCFS2_IS_VALID_DINODE(fe)) {
457 		mlog(ML_ERROR, "Invalid dinode #%llu: signature = %.*s\n",
458 		     (unsigned long long)le64_to_cpu(fe->i_blkno), 7,
459 		     fe->i_signature);
460 		goto bail;
461 	}
462 
463 	/*
464 	 * This is a code bug. Right now the caller needs to
465 	 * understand whether it is asking for a system file inode or
466 	 * not so the proper lock names can be built.
467 	 */
468 	mlog_bug_on_msg(!!(fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)) !=
469 			!!(args->fi_flags & OCFS2_FI_FLAG_SYSFILE),
470 			"Inode %llu: system file state is ambigous\n",
471 			(unsigned long long)args->fi_blkno);
472 
473 	if (S_ISCHR(le16_to_cpu(fe->i_mode)) ||
474 	    S_ISBLK(le16_to_cpu(fe->i_mode)))
475     		inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev));
476 
477 	if (ocfs2_populate_inode(inode, fe, 0) < 0)
478 		goto bail;
479 
480 	BUG_ON(args->fi_blkno != le64_to_cpu(fe->i_blkno));
481 
482 	status = 0;
483 
484 bail:
485 	if (can_lock)
486 		ocfs2_meta_unlock(inode, 0);
487 
488 	if (status < 0)
489 		make_bad_inode(inode);
490 
491 	if (args && bh)
492 		brelse(bh);
493 
494 	mlog_exit(status);
495 	return status;
496 }
497 
498 void ocfs2_sync_blockdev(struct super_block *sb)
499 {
500 	sync_blockdev(sb->s_bdev);
501 }
502 
503 static int ocfs2_truncate_for_delete(struct ocfs2_super *osb,
504 				     struct inode *inode,
505 				     struct buffer_head *fe_bh)
506 {
507 	int status = 0;
508 	struct ocfs2_truncate_context *tc = NULL;
509 	struct ocfs2_dinode *fe;
510 	handle_t *handle = NULL;
511 
512 	mlog_entry_void();
513 
514 	fe = (struct ocfs2_dinode *) fe_bh->b_data;
515 
516 	if (fe->i_clusters) {
517 		handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
518 		if (IS_ERR(handle)) {
519 			status = PTR_ERR(handle);
520 			mlog_errno(status);
521 			goto out;
522 		}
523 
524 		status = ocfs2_journal_access(handle, inode, fe_bh,
525 					      OCFS2_JOURNAL_ACCESS_WRITE);
526 		if (status < 0) {
527 			mlog_errno(status);
528 			goto out;
529 		}
530 
531 		i_size_write(inode, 0);
532 
533 		status = ocfs2_mark_inode_dirty(handle, inode, fe_bh);
534 		if (status < 0) {
535 			mlog_errno(status);
536 			goto out;
537 		}
538 
539 		ocfs2_commit_trans(osb, handle);
540 		handle = NULL;
541 
542 		status = ocfs2_prepare_truncate(osb, inode, fe_bh, &tc);
543 		if (status < 0) {
544 			mlog_errno(status);
545 			goto out;
546 		}
547 
548 		status = ocfs2_commit_truncate(osb, inode, fe_bh, tc);
549 		if (status < 0) {
550 			mlog_errno(status);
551 			goto out;
552 		}
553 	}
554 
555 out:
556 	if (handle)
557 		ocfs2_commit_trans(osb, handle);
558 	mlog_exit(status);
559 	return status;
560 }
561 
562 static int ocfs2_remove_inode(struct inode *inode,
563 			      struct buffer_head *di_bh,
564 			      struct inode *orphan_dir_inode,
565 			      struct buffer_head *orphan_dir_bh)
566 {
567 	int status;
568 	struct inode *inode_alloc_inode = NULL;
569 	struct buffer_head *inode_alloc_bh = NULL;
570 	handle_t *handle;
571 	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
572 	struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data;
573 
574 	inode_alloc_inode =
575 		ocfs2_get_system_file_inode(osb, INODE_ALLOC_SYSTEM_INODE,
576 					    le16_to_cpu(di->i_suballoc_slot));
577 	if (!inode_alloc_inode) {
578 		status = -EEXIST;
579 		mlog_errno(status);
580 		goto bail;
581 	}
582 
583 	mutex_lock(&inode_alloc_inode->i_mutex);
584 	status = ocfs2_meta_lock(inode_alloc_inode, &inode_alloc_bh, 1);
585 	if (status < 0) {
586 		mutex_unlock(&inode_alloc_inode->i_mutex);
587 
588 		mlog_errno(status);
589 		goto bail;
590 	}
591 
592 	handle = ocfs2_start_trans(osb, OCFS2_DELETE_INODE_CREDITS);
593 	if (IS_ERR(handle)) {
594 		status = PTR_ERR(handle);
595 		mlog_errno(status);
596 		goto bail_unlock;
597 	}
598 
599 	status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode,
600 				  orphan_dir_bh);
601 	if (status < 0) {
602 		mlog_errno(status);
603 		goto bail_commit;
604 	}
605 
606 	/* set the inodes dtime */
607 	status = ocfs2_journal_access(handle, inode, di_bh,
608 				      OCFS2_JOURNAL_ACCESS_WRITE);
609 	if (status < 0) {
610 		mlog_errno(status);
611 		goto bail_commit;
612 	}
613 
614 	di->i_dtime = cpu_to_le64(CURRENT_TIME.tv_sec);
615 	le32_and_cpu(&di->i_flags, ~(OCFS2_VALID_FL | OCFS2_ORPHANED_FL));
616 
617 	status = ocfs2_journal_dirty(handle, di_bh);
618 	if (status < 0) {
619 		mlog_errno(status);
620 		goto bail_commit;
621 	}
622 
623 	ocfs2_remove_from_cache(inode, di_bh);
624 
625 	status = ocfs2_free_dinode(handle, inode_alloc_inode,
626 				   inode_alloc_bh, di);
627 	if (status < 0)
628 		mlog_errno(status);
629 
630 bail_commit:
631 	ocfs2_commit_trans(osb, handle);
632 bail_unlock:
633 	ocfs2_meta_unlock(inode_alloc_inode, 1);
634 	mutex_unlock(&inode_alloc_inode->i_mutex);
635 	brelse(inode_alloc_bh);
636 bail:
637 	iput(inode_alloc_inode);
638 
639 	return status;
640 }
641 
642 /*
643  * Serialize with orphan dir recovery. If the process doing
644  * recovery on this orphan dir does an iget() with the dir
645  * i_mutex held, we'll deadlock here. Instead we detect this
646  * and exit early - recovery will wipe this inode for us.
647  */
648 static int ocfs2_check_orphan_recovery_state(struct ocfs2_super *osb,
649 					     int slot)
650 {
651 	int ret = 0;
652 
653 	spin_lock(&osb->osb_lock);
654 	if (ocfs2_node_map_test_bit(osb, &osb->osb_recovering_orphan_dirs, slot)) {
655 		mlog(0, "Recovery is happening on orphan dir %d, will skip "
656 		     "this inode\n", slot);
657 		ret = -EDEADLK;
658 		goto out;
659 	}
660 	/* This signals to the orphan recovery process that it should
661 	 * wait for us to handle the wipe. */
662 	osb->osb_orphan_wipes[slot]++;
663 out:
664 	spin_unlock(&osb->osb_lock);
665 	return ret;
666 }
667 
668 static void ocfs2_signal_wipe_completion(struct ocfs2_super *osb,
669 					 int slot)
670 {
671 	spin_lock(&osb->osb_lock);
672 	osb->osb_orphan_wipes[slot]--;
673 	spin_unlock(&osb->osb_lock);
674 
675 	wake_up(&osb->osb_wipe_event);
676 }
677 
678 static int ocfs2_wipe_inode(struct inode *inode,
679 			    struct buffer_head *di_bh)
680 {
681 	int status, orphaned_slot;
682 	struct inode *orphan_dir_inode = NULL;
683 	struct buffer_head *orphan_dir_bh = NULL;
684 	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
685 	struct ocfs2_dinode *di;
686 
687 	di = (struct ocfs2_dinode *) di_bh->b_data;
688 	orphaned_slot = le16_to_cpu(di->i_orphaned_slot);
689 
690 	status = ocfs2_check_orphan_recovery_state(osb, orphaned_slot);
691 	if (status)
692 		return status;
693 
694 	orphan_dir_inode = ocfs2_get_system_file_inode(osb,
695 						       ORPHAN_DIR_SYSTEM_INODE,
696 						       orphaned_slot);
697 	if (!orphan_dir_inode) {
698 		status = -EEXIST;
699 		mlog_errno(status);
700 		goto bail;
701 	}
702 
703 	/* Lock the orphan dir. The lock will be held for the entire
704 	 * delete_inode operation. We do this now to avoid races with
705 	 * recovery completion on other nodes. */
706 	mutex_lock(&orphan_dir_inode->i_mutex);
707 	status = ocfs2_meta_lock(orphan_dir_inode, &orphan_dir_bh, 1);
708 	if (status < 0) {
709 		mutex_unlock(&orphan_dir_inode->i_mutex);
710 
711 		mlog_errno(status);
712 		goto bail;
713 	}
714 
715 	/* we do this while holding the orphan dir lock because we
716 	 * don't want recovery being run from another node to vote for
717 	 * an inode delete on us -- this will result in two nodes
718 	 * truncating the same file! */
719 	status = ocfs2_truncate_for_delete(osb, inode, di_bh);
720 	if (status < 0) {
721 		mlog_errno(status);
722 		goto bail_unlock_dir;
723 	}
724 
725 	status = ocfs2_remove_inode(inode, di_bh, orphan_dir_inode,
726 				    orphan_dir_bh);
727 	if (status < 0)
728 		mlog_errno(status);
729 
730 bail_unlock_dir:
731 	ocfs2_meta_unlock(orphan_dir_inode, 1);
732 	mutex_unlock(&orphan_dir_inode->i_mutex);
733 	brelse(orphan_dir_bh);
734 bail:
735 	iput(orphan_dir_inode);
736 	ocfs2_signal_wipe_completion(osb, orphaned_slot);
737 
738 	return status;
739 }
740 
741 /* There is a series of simple checks that should be done before a
742  * vote is even considered. Encapsulate those in this function. */
743 static int ocfs2_inode_is_valid_to_delete(struct inode *inode)
744 {
745 	int ret = 0;
746 	struct ocfs2_inode_info *oi = OCFS2_I(inode);
747 	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
748 
749 	/* We shouldn't be getting here for the root directory
750 	 * inode.. */
751 	if (inode == osb->root_inode) {
752 		mlog(ML_ERROR, "Skipping delete of root inode.\n");
753 		goto bail;
754 	}
755 
756 	/* If we're coming from process_vote we can't go into our own
757 	 * voting [hello, deadlock city!], so unforuntately we just
758 	 * have to skip deleting this guy. That's OK though because
759 	 * the node who's doing the actual deleting should handle it
760 	 * anyway. */
761 	if (current == osb->vote_task) {
762 		mlog(0, "Skipping delete of %lu because we're currently "
763 		     "in process_vote\n", inode->i_ino);
764 		goto bail;
765 	}
766 
767 	spin_lock(&oi->ip_lock);
768 	/* OCFS2 *never* deletes system files. This should technically
769 	 * never get here as system file inodes should always have a
770 	 * positive link count. */
771 	if (oi->ip_flags & OCFS2_INODE_SYSTEM_FILE) {
772 		mlog(ML_ERROR, "Skipping delete of system file %llu\n",
773 		     (unsigned long long)oi->ip_blkno);
774 		goto bail_unlock;
775 	}
776 
777 	/* If we have voted "yes" on the wipe of this inode for
778 	 * another node, it will be marked here so we can safely skip
779 	 * it. Recovery will cleanup any inodes we might inadvertantly
780 	 * skip here. */
781 	if (oi->ip_flags & OCFS2_INODE_SKIP_DELETE) {
782 		mlog(0, "Skipping delete of %lu because another node "
783 		     "has done this for us.\n", inode->i_ino);
784 		goto bail_unlock;
785 	}
786 
787 	ret = 1;
788 bail_unlock:
789 	spin_unlock(&oi->ip_lock);
790 bail:
791 	return ret;
792 }
793 
794 /* Query the cluster to determine whether we should wipe an inode from
795  * disk or not.
796  *
797  * Requires the inode to have the cluster lock. */
798 static int ocfs2_query_inode_wipe(struct inode *inode,
799 				  struct buffer_head *di_bh,
800 				  int *wipe)
801 {
802 	int status = 0;
803 	struct ocfs2_inode_info *oi = OCFS2_I(inode);
804 	struct ocfs2_dinode *di;
805 
806 	*wipe = 0;
807 
808 	/* While we were waiting for the cluster lock in
809 	 * ocfs2_delete_inode, another node might have asked to delete
810 	 * the inode. Recheck our flags to catch this. */
811 	if (!ocfs2_inode_is_valid_to_delete(inode)) {
812 		mlog(0, "Skipping delete of %llu because flags changed\n",
813 		     (unsigned long long)oi->ip_blkno);
814 		goto bail;
815 	}
816 
817 	/* Now that we have an up to date inode, we can double check
818 	 * the link count. */
819 	if (inode->i_nlink) {
820 		mlog(0, "Skipping delete of %llu because nlink = %u\n",
821 		     (unsigned long long)oi->ip_blkno, inode->i_nlink);
822 		goto bail;
823 	}
824 
825 	/* Do some basic inode verification... */
826 	di = (struct ocfs2_dinode *) di_bh->b_data;
827 	if (!(di->i_flags & cpu_to_le32(OCFS2_ORPHANED_FL))) {
828 		/* for lack of a better error? */
829 		status = -EEXIST;
830 		mlog(ML_ERROR,
831 		     "Inode %llu (on-disk %llu) not orphaned! "
832 		     "Disk flags  0x%x, inode flags 0x%x\n",
833 		     (unsigned long long)oi->ip_blkno,
834 		     (unsigned long long)le64_to_cpu(di->i_blkno),
835 		     le32_to_cpu(di->i_flags), oi->ip_flags);
836 		goto bail;
837 	}
838 
839 	/* has someone already deleted us?! baaad... */
840 	if (di->i_dtime) {
841 		status = -EEXIST;
842 		mlog_errno(status);
843 		goto bail;
844 	}
845 
846 	/*
847 	 * This is how ocfs2 determines whether an inode is still live
848 	 * within the cluster. Every node takes a shared read lock on
849 	 * the inode open lock in ocfs2_read_locked_inode(). When we
850 	 * get to ->delete_inode(), each node tries to convert it's
851 	 * lock to an exclusive. Trylocks are serialized by the inode
852 	 * meta data lock. If the upconvert suceeds, we know the inode
853 	 * is no longer live and can be deleted.
854 	 *
855 	 * Though we call this with the meta data lock held, the
856 	 * trylock keeps us from ABBA deadlock.
857 	 */
858 	status = ocfs2_try_open_lock(inode, 1);
859 	if (status == -EAGAIN) {
860 		status = 0;
861 		mlog(0, "Skipping delete of %llu because it is in use on"
862 		     "other nodes\n", (unsigned long long)oi->ip_blkno);
863 		goto bail;
864 	}
865 	if (status < 0) {
866 		mlog_errno(status);
867 		goto bail;
868 	}
869 
870 	*wipe = 1;
871 	mlog(0, "Inode %llu is ok to wipe from orphan dir %u\n",
872 	     (unsigned long long)oi->ip_blkno,
873 	     le16_to_cpu(di->i_orphaned_slot));
874 
875 bail:
876 	return status;
877 }
878 
879 /* Support function for ocfs2_delete_inode. Will help us keep the
880  * inode data in a consistent state for clear_inode. Always truncates
881  * pages, optionally sync's them first. */
882 static void ocfs2_cleanup_delete_inode(struct inode *inode,
883 				       int sync_data)
884 {
885 	mlog(0, "Cleanup inode %llu, sync = %d\n",
886 	     (unsigned long long)OCFS2_I(inode)->ip_blkno, sync_data);
887 	if (sync_data)
888 		write_inode_now(inode, 1);
889 	truncate_inode_pages(&inode->i_data, 0);
890 }
891 
892 void ocfs2_delete_inode(struct inode *inode)
893 {
894 	int wipe, status;
895 	sigset_t blocked, oldset;
896 	struct buffer_head *di_bh = NULL;
897 
898 	mlog_entry("(inode->i_ino = %lu)\n", inode->i_ino);
899 
900 	if (is_bad_inode(inode)) {
901 		mlog(0, "Skipping delete of bad inode\n");
902 		goto bail;
903 	}
904 
905 	if (!ocfs2_inode_is_valid_to_delete(inode)) {
906 		/* It's probably not necessary to truncate_inode_pages
907 		 * here but we do it for safety anyway (it will most
908 		 * likely be a no-op anyway) */
909 		ocfs2_cleanup_delete_inode(inode, 0);
910 		goto bail;
911 	}
912 
913 	/* We want to block signals in delete_inode as the lock and
914 	 * messaging paths may return us -ERESTARTSYS. Which would
915 	 * cause us to exit early, resulting in inodes being orphaned
916 	 * forever. */
917 	sigfillset(&blocked);
918 	status = sigprocmask(SIG_BLOCK, &blocked, &oldset);
919 	if (status < 0) {
920 		mlog_errno(status);
921 		ocfs2_cleanup_delete_inode(inode, 1);
922 		goto bail;
923 	}
924 
925 	/* Lock down the inode. This gives us an up to date view of
926 	 * it's metadata (for verification), and allows us to
927 	 * serialize delete_inode votes.
928 	 *
929 	 * Even though we might be doing a truncate, we don't take the
930 	 * allocation lock here as it won't be needed - nobody will
931 	 * have the file open.
932 	 */
933 	status = ocfs2_meta_lock(inode, &di_bh, 1);
934 	if (status < 0) {
935 		if (status != -ENOENT)
936 			mlog_errno(status);
937 		ocfs2_cleanup_delete_inode(inode, 0);
938 		goto bail_unblock;
939 	}
940 
941 	/* Query the cluster. This will be the final decision made
942 	 * before we go ahead and wipe the inode. */
943 	status = ocfs2_query_inode_wipe(inode, di_bh, &wipe);
944 	if (!wipe || status < 0) {
945 		/* Error and inode busy vote both mean we won't be
946 		 * removing the inode, so they take almost the same
947 		 * path. */
948 		if (status < 0)
949 			mlog_errno(status);
950 
951 		/* Someone in the cluster has voted to not wipe this
952 		 * inode, or it was never completely orphaned. Write
953 		 * out the pages and exit now. */
954 		ocfs2_cleanup_delete_inode(inode, 1);
955 		goto bail_unlock_inode;
956 	}
957 
958 	ocfs2_cleanup_delete_inode(inode, 0);
959 
960 	status = ocfs2_wipe_inode(inode, di_bh);
961 	if (status < 0) {
962 		if (status != -EDEADLK)
963 			mlog_errno(status);
964 		goto bail_unlock_inode;
965 	}
966 
967 	/*
968 	 * Mark the inode as successfully deleted.
969 	 *
970 	 * This is important for ocfs2_clear_inode() as it will check
971 	 * this flag and skip any checkpointing work
972 	 *
973 	 * ocfs2_stuff_meta_lvb() also uses this flag to invalidate
974 	 * the LVB for other nodes.
975 	 */
976 	OCFS2_I(inode)->ip_flags |= OCFS2_INODE_DELETED;
977 
978 bail_unlock_inode:
979 	ocfs2_meta_unlock(inode, 1);
980 	brelse(di_bh);
981 bail_unblock:
982 	status = sigprocmask(SIG_SETMASK, &oldset, NULL);
983 	if (status < 0)
984 		mlog_errno(status);
985 bail:
986 	clear_inode(inode);
987 	mlog_exit_void();
988 }
989 
990 void ocfs2_clear_inode(struct inode *inode)
991 {
992 	int status;
993 	struct ocfs2_inode_info *oi = OCFS2_I(inode);
994 
995 	mlog_entry_void();
996 
997 	if (!inode)
998 		goto bail;
999 
1000 	mlog(0, "Clearing inode: %llu, nlink = %u\n",
1001 	     (unsigned long long)OCFS2_I(inode)->ip_blkno, inode->i_nlink);
1002 
1003 	mlog_bug_on_msg(OCFS2_SB(inode->i_sb) == NULL,
1004 			"Inode=%lu\n", inode->i_ino);
1005 
1006 	/* For remove delete_inode vote, we hold open lock before,
1007 	 * now it is time to unlock PR and EX open locks. */
1008 	ocfs2_open_unlock(inode);
1009 
1010 	/* Do these before all the other work so that we don't bounce
1011 	 * the vote thread while waiting to destroy the locks. */
1012 	ocfs2_mark_lockres_freeing(&oi->ip_rw_lockres);
1013 	ocfs2_mark_lockres_freeing(&oi->ip_meta_lockres);
1014 	ocfs2_mark_lockres_freeing(&oi->ip_data_lockres);
1015 	ocfs2_mark_lockres_freeing(&oi->ip_open_lockres);
1016 
1017 	/* We very well may get a clear_inode before all an inodes
1018 	 * metadata has hit disk. Of course, we can't drop any cluster
1019 	 * locks until the journal has finished with it. The only
1020 	 * exception here are successfully wiped inodes - their
1021 	 * metadata can now be considered to be part of the system
1022 	 * inodes from which it came. */
1023 	if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED))
1024 		ocfs2_checkpoint_inode(inode);
1025 
1026 	mlog_bug_on_msg(!list_empty(&oi->ip_io_markers),
1027 			"Clear inode of %llu, inode has io markers\n",
1028 			(unsigned long long)oi->ip_blkno);
1029 
1030 	ocfs2_extent_map_trunc(inode, 0);
1031 
1032 	status = ocfs2_drop_inode_locks(inode);
1033 	if (status < 0)
1034 		mlog_errno(status);
1035 
1036 	ocfs2_lock_res_free(&oi->ip_rw_lockres);
1037 	ocfs2_lock_res_free(&oi->ip_meta_lockres);
1038 	ocfs2_lock_res_free(&oi->ip_data_lockres);
1039 	ocfs2_lock_res_free(&oi->ip_open_lockres);
1040 
1041 	ocfs2_metadata_cache_purge(inode);
1042 
1043 	mlog_bug_on_msg(oi->ip_metadata_cache.ci_num_cached,
1044 			"Clear inode of %llu, inode has %u cache items\n",
1045 			(unsigned long long)oi->ip_blkno, oi->ip_metadata_cache.ci_num_cached);
1046 
1047 	mlog_bug_on_msg(!(oi->ip_flags & OCFS2_INODE_CACHE_INLINE),
1048 			"Clear inode of %llu, inode has a bad flag\n",
1049 			(unsigned long long)oi->ip_blkno);
1050 
1051 	mlog_bug_on_msg(spin_is_locked(&oi->ip_lock),
1052 			"Clear inode of %llu, inode is locked\n",
1053 			(unsigned long long)oi->ip_blkno);
1054 
1055 	mlog_bug_on_msg(!mutex_trylock(&oi->ip_io_mutex),
1056 			"Clear inode of %llu, io_mutex is locked\n",
1057 			(unsigned long long)oi->ip_blkno);
1058 	mutex_unlock(&oi->ip_io_mutex);
1059 
1060 	/*
1061 	 * down_trylock() returns 0, down_write_trylock() returns 1
1062 	 * kernel 1, world 0
1063 	 */
1064 	mlog_bug_on_msg(!down_write_trylock(&oi->ip_alloc_sem),
1065 			"Clear inode of %llu, alloc_sem is locked\n",
1066 			(unsigned long long)oi->ip_blkno);
1067 	up_write(&oi->ip_alloc_sem);
1068 
1069 	mlog_bug_on_msg(oi->ip_open_count,
1070 			"Clear inode of %llu has open count %d\n",
1071 			(unsigned long long)oi->ip_blkno, oi->ip_open_count);
1072 
1073 	/* Clear all other flags. */
1074 	oi->ip_flags = OCFS2_INODE_CACHE_INLINE;
1075 	oi->ip_created_trans = 0;
1076 	oi->ip_last_trans = 0;
1077 	oi->ip_dir_start_lookup = 0;
1078 	oi->ip_blkno = 0ULL;
1079 
1080 bail:
1081 	mlog_exit_void();
1082 }
1083 
1084 /* Called under inode_lock, with no more references on the
1085  * struct inode, so it's safe here to check the flags field
1086  * and to manipulate i_nlink without any other locks. */
1087 void ocfs2_drop_inode(struct inode *inode)
1088 {
1089 	struct ocfs2_inode_info *oi = OCFS2_I(inode);
1090 
1091 	mlog_entry_void();
1092 
1093 	mlog(0, "Drop inode %llu, nlink = %u, ip_flags = 0x%x\n",
1094 	     (unsigned long long)oi->ip_blkno, inode->i_nlink, oi->ip_flags);
1095 
1096 	if (oi->ip_flags & OCFS2_INODE_MAYBE_ORPHANED)
1097 		generic_delete_inode(inode);
1098 	else
1099 		generic_drop_inode(inode);
1100 
1101 	mlog_exit_void();
1102 }
1103 
1104 /*
1105  * TODO: this should probably be merged into ocfs2_get_block
1106  *
1107  * However, you now need to pay attention to the cont_prepare_write()
1108  * stuff in ocfs2_get_block (that is, ocfs2_get_block pretty much
1109  * expects never to extend).
1110  */
1111 struct buffer_head *ocfs2_bread(struct inode *inode,
1112 				int block, int *err, int reada)
1113 {
1114 	struct buffer_head *bh = NULL;
1115 	int tmperr;
1116 	u64 p_blkno;
1117 	int readflags = OCFS2_BH_CACHED;
1118 
1119 	if (reada)
1120 		readflags |= OCFS2_BH_READAHEAD;
1121 
1122 	if (((u64)block << inode->i_sb->s_blocksize_bits) >=
1123 	    i_size_read(inode)) {
1124 		BUG_ON(!reada);
1125 		return NULL;
1126 	}
1127 
1128 	down_read(&OCFS2_I(inode)->ip_alloc_sem);
1129 	tmperr = ocfs2_extent_map_get_blocks(inode, block, &p_blkno, NULL,
1130 					     NULL);
1131 	up_read(&OCFS2_I(inode)->ip_alloc_sem);
1132 	if (tmperr < 0) {
1133 		mlog_errno(tmperr);
1134 		goto fail;
1135 	}
1136 
1137 	tmperr = ocfs2_read_block(OCFS2_SB(inode->i_sb), p_blkno, &bh,
1138 				  readflags, inode);
1139 	if (tmperr < 0)
1140 		goto fail;
1141 
1142 	tmperr = 0;
1143 
1144 	*err = 0;
1145 	return bh;
1146 
1147 fail:
1148 	if (bh) {
1149 		brelse(bh);
1150 		bh = NULL;
1151 	}
1152 	*err = -EIO;
1153 	return NULL;
1154 }
1155 
1156 /*
1157  * This is called from our getattr.
1158  */
1159 int ocfs2_inode_revalidate(struct dentry *dentry)
1160 {
1161 	struct inode *inode = dentry->d_inode;
1162 	int status = 0;
1163 
1164 	mlog_entry("(inode = 0x%p, ino = %llu)\n", inode,
1165 		   inode ? (unsigned long long)OCFS2_I(inode)->ip_blkno : 0ULL);
1166 
1167 	if (!inode) {
1168 		mlog(0, "eep, no inode!\n");
1169 		status = -ENOENT;
1170 		goto bail;
1171 	}
1172 
1173 	spin_lock(&OCFS2_I(inode)->ip_lock);
1174 	if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED) {
1175 		spin_unlock(&OCFS2_I(inode)->ip_lock);
1176 		mlog(0, "inode deleted!\n");
1177 		status = -ENOENT;
1178 		goto bail;
1179 	}
1180 	spin_unlock(&OCFS2_I(inode)->ip_lock);
1181 
1182 	/* Let ocfs2_meta_lock do the work of updating our struct
1183 	 * inode for us. */
1184 	status = ocfs2_meta_lock(inode, NULL, 0);
1185 	if (status < 0) {
1186 		if (status != -ENOENT)
1187 			mlog_errno(status);
1188 		goto bail;
1189 	}
1190 	ocfs2_meta_unlock(inode, 0);
1191 bail:
1192 	mlog_exit(status);
1193 
1194 	return status;
1195 }
1196 
1197 /*
1198  * Updates a disk inode from a
1199  * struct inode.
1200  * Only takes ip_lock.
1201  */
1202 int ocfs2_mark_inode_dirty(handle_t *handle,
1203 			   struct inode *inode,
1204 			   struct buffer_head *bh)
1205 {
1206 	int status;
1207 	struct ocfs2_dinode *fe = (struct ocfs2_dinode *) bh->b_data;
1208 
1209 	mlog_entry("(inode %llu)\n",
1210 		   (unsigned long long)OCFS2_I(inode)->ip_blkno);
1211 
1212 	status = ocfs2_journal_access(handle, inode, bh,
1213 				      OCFS2_JOURNAL_ACCESS_WRITE);
1214 	if (status < 0) {
1215 		mlog_errno(status);
1216 		goto leave;
1217 	}
1218 
1219 	spin_lock(&OCFS2_I(inode)->ip_lock);
1220 	fe->i_clusters = cpu_to_le32(OCFS2_I(inode)->ip_clusters);
1221 	ocfs2_get_inode_flags(OCFS2_I(inode));
1222 	fe->i_attr = cpu_to_le32(OCFS2_I(inode)->ip_attr);
1223 	spin_unlock(&OCFS2_I(inode)->ip_lock);
1224 
1225 	fe->i_size = cpu_to_le64(i_size_read(inode));
1226 	fe->i_links_count = cpu_to_le16(inode->i_nlink);
1227 	fe->i_uid = cpu_to_le32(inode->i_uid);
1228 	fe->i_gid = cpu_to_le32(inode->i_gid);
1229 	fe->i_mode = cpu_to_le16(inode->i_mode);
1230 	fe->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
1231 	fe->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
1232 	fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
1233 	fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
1234 	fe->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
1235 	fe->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
1236 
1237 	status = ocfs2_journal_dirty(handle, bh);
1238 	if (status < 0)
1239 		mlog_errno(status);
1240 
1241 	status = 0;
1242 leave:
1243 
1244 	mlog_exit(status);
1245 	return status;
1246 }
1247 
1248 /*
1249  *
1250  * Updates a struct inode from a disk inode.
1251  * does no i/o, only takes ip_lock.
1252  */
1253 void ocfs2_refresh_inode(struct inode *inode,
1254 			 struct ocfs2_dinode *fe)
1255 {
1256 	spin_lock(&OCFS2_I(inode)->ip_lock);
1257 
1258 	OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
1259 	OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr);
1260 	ocfs2_set_inode_flags(inode);
1261 	i_size_write(inode, le64_to_cpu(fe->i_size));
1262 	inode->i_nlink = le16_to_cpu(fe->i_links_count);
1263 	inode->i_uid = le32_to_cpu(fe->i_uid);
1264 	inode->i_gid = le32_to_cpu(fe->i_gid);
1265 	inode->i_mode = le16_to_cpu(fe->i_mode);
1266 	if (S_ISLNK(inode->i_mode) && le32_to_cpu(fe->i_clusters) == 0)
1267 		inode->i_blocks = 0;
1268 	else
1269 		inode->i_blocks = ocfs2_inode_sector_count(inode);
1270 	inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime);
1271 	inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec);
1272 	inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime);
1273 	inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec);
1274 	inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime);
1275 	inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec);
1276 
1277 	spin_unlock(&OCFS2_I(inode)->ip_lock);
1278 }
1279