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ccd979bd MF |
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 | #include <linux/smp_lock.h> | |
32 | ||
33 | #include <asm/byteorder.h> | |
34 | ||
35 | #define MLOG_MASK_PREFIX ML_INODE | |
36 | #include <cluster/masklog.h> | |
37 | ||
38 | #include "ocfs2.h" | |
39 | ||
40 | #include "alloc.h" | |
41 | #include "dlmglue.h" | |
42 | #include "extent_map.h" | |
43 | #include "file.h" | |
b4df6ed8 | 44 | #include "heartbeat.h" |
ccd979bd MF |
45 | #include "inode.h" |
46 | #include "journal.h" | |
47 | #include "namei.h" | |
48 | #include "suballoc.h" | |
49 | #include "super.h" | |
50 | #include "symlink.h" | |
51 | #include "sysfile.h" | |
52 | #include "uptodate.h" | |
53 | #include "vote.h" | |
54 | ||
55 | #include "buffer_head_io.h" | |
56 | ||
57 | #define OCFS2_FI_FLAG_NOWAIT 0x1 | |
58 | #define OCFS2_FI_FLAG_DELETE 0x2 | |
59 | struct ocfs2_find_inode_args | |
60 | { | |
61 | u64 fi_blkno; | |
62 | unsigned long fi_ino; | |
63 | unsigned int fi_flags; | |
64 | }; | |
65 | ||
66 | static int ocfs2_read_locked_inode(struct inode *inode, | |
67 | struct ocfs2_find_inode_args *args); | |
68 | static int ocfs2_init_locked_inode(struct inode *inode, void *opaque); | |
69 | static int ocfs2_find_actor(struct inode *inode, void *opaque); | |
70 | static int ocfs2_truncate_for_delete(struct ocfs2_super *osb, | |
71 | struct inode *inode, | |
72 | struct buffer_head *fe_bh); | |
73 | ||
74 | struct inode *ocfs2_ilookup_for_vote(struct ocfs2_super *osb, | |
75 | u64 blkno, | |
76 | int delete_vote) | |
77 | { | |
78 | struct ocfs2_find_inode_args args; | |
79 | ||
80 | /* ocfs2_ilookup_for_vote should *only* be called from the | |
81 | * vote thread */ | |
82 | BUG_ON(current != osb->vote_task); | |
83 | ||
84 | args.fi_blkno = blkno; | |
85 | args.fi_flags = OCFS2_FI_FLAG_NOWAIT; | |
86 | if (delete_vote) | |
87 | args.fi_flags |= OCFS2_FI_FLAG_DELETE; | |
88 | args.fi_ino = ino_from_blkno(osb->sb, blkno); | |
89 | return ilookup5(osb->sb, args.fi_ino, ocfs2_find_actor, &args); | |
90 | } | |
91 | ||
92 | struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 blkno) | |
93 | { | |
94 | struct inode *inode = NULL; | |
95 | struct super_block *sb = osb->sb; | |
96 | struct ocfs2_find_inode_args args; | |
97 | ||
98 | mlog_entry("(blkno = %"MLFu64")\n", blkno); | |
99 | ||
100 | /* Ok. By now we've either got the offsets passed to us by the | |
101 | * caller, or we just pulled them off the bh. Lets do some | |
102 | * sanity checks to make sure they're OK. */ | |
103 | if (blkno == 0) { | |
104 | inode = ERR_PTR(-EINVAL); | |
105 | mlog_errno(PTR_ERR(inode)); | |
106 | goto bail; | |
107 | } | |
108 | ||
109 | args.fi_blkno = blkno; | |
110 | args.fi_flags = 0; | |
111 | args.fi_ino = ino_from_blkno(sb, blkno); | |
112 | ||
113 | inode = iget5_locked(sb, args.fi_ino, ocfs2_find_actor, | |
114 | ocfs2_init_locked_inode, &args); | |
115 | /* inode was *not* in the inode cache. 2.6.x requires | |
116 | * us to do our own read_inode call and unlock it | |
117 | * afterwards. */ | |
118 | if (inode && inode->i_state & I_NEW) { | |
119 | mlog(0, "Inode was not in inode cache, reading it.\n"); | |
120 | ocfs2_read_locked_inode(inode, &args); | |
121 | unlock_new_inode(inode); | |
122 | } | |
123 | if (inode == NULL) { | |
124 | inode = ERR_PTR(-ENOMEM); | |
125 | mlog_errno(PTR_ERR(inode)); | |
126 | goto bail; | |
127 | } | |
128 | if (is_bad_inode(inode)) { | |
129 | iput(inode); | |
130 | inode = ERR_PTR(-ESTALE); | |
131 | mlog_errno(PTR_ERR(inode)); | |
132 | goto bail; | |
133 | } | |
134 | ||
135 | bail: | |
136 | if (!IS_ERR(inode)) { | |
137 | mlog(0, "returning inode with number %"MLFu64"\n", | |
138 | OCFS2_I(inode)->ip_blkno); | |
139 | mlog_exit_ptr(inode); | |
140 | } else | |
141 | mlog_errno(PTR_ERR(inode)); | |
142 | ||
143 | return inode; | |
144 | } | |
145 | ||
146 | ||
147 | /* | |
148 | * here's how inodes get read from disk: | |
149 | * iget5_locked -> find_actor -> OCFS2_FIND_ACTOR | |
150 | * found? : return the in-memory inode | |
151 | * not found? : get_new_inode -> OCFS2_INIT_LOCKED_INODE | |
152 | */ | |
153 | ||
154 | static int ocfs2_find_actor(struct inode *inode, void *opaque) | |
155 | { | |
156 | struct ocfs2_find_inode_args *args = NULL; | |
157 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
158 | int ret = 0; | |
159 | ||
160 | mlog_entry("(0x%p, %lu, 0x%p)\n", inode, inode->i_ino, opaque); | |
161 | ||
162 | args = opaque; | |
163 | ||
164 | mlog_bug_on_msg(!inode, "No inode in find actor!\n"); | |
165 | ||
166 | if (oi->ip_blkno != args->fi_blkno) | |
167 | goto bail; | |
168 | ||
169 | /* OCFS2_FI_FLAG_NOWAIT is *only* set from | |
170 | * ocfs2_ilookup_for_vote which won't create an inode for one | |
171 | * that isn't found. The vote thread which doesn't want to get | |
172 | * an inode which is in the process of going away - otherwise | |
173 | * the call to __wait_on_freeing_inode in find_inode_fast will | |
174 | * cause it to deadlock on an inode which may be waiting on a | |
175 | * vote (or lock release) in delete_inode */ | |
176 | if ((args->fi_flags & OCFS2_FI_FLAG_NOWAIT) && | |
177 | (inode->i_state & (I_FREEING|I_CLEAR))) { | |
178 | /* As stated above, we're not going to return an | |
179 | * inode. In the case of a delete vote, the voting | |
180 | * code is going to signal the other node to go | |
181 | * ahead. Mark that state here, so this freeing inode | |
182 | * has the state when it gets to delete_inode. */ | |
183 | if (args->fi_flags & OCFS2_FI_FLAG_DELETE) { | |
184 | spin_lock(&oi->ip_lock); | |
185 | ocfs2_mark_inode_remotely_deleted(inode); | |
186 | spin_unlock(&oi->ip_lock); | |
187 | } | |
188 | goto bail; | |
189 | } | |
190 | ||
191 | ret = 1; | |
192 | bail: | |
193 | mlog_exit(ret); | |
194 | return ret; | |
195 | } | |
196 | ||
197 | /* | |
198 | * initialize the new inode, but don't do anything that would cause | |
199 | * us to sleep. | |
200 | * return 0 on success, 1 on failure | |
201 | */ | |
202 | static int ocfs2_init_locked_inode(struct inode *inode, void *opaque) | |
203 | { | |
204 | struct ocfs2_find_inode_args *args = opaque; | |
205 | ||
206 | mlog_entry("inode = %p, opaque = %p\n", inode, opaque); | |
207 | ||
208 | inode->i_ino = args->fi_ino; | |
209 | OCFS2_I(inode)->ip_blkno = args->fi_blkno; | |
210 | ||
211 | mlog_exit(0); | |
212 | return 0; | |
213 | } | |
214 | ||
215 | int ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe, | |
216 | int create_ino) | |
217 | { | |
218 | struct super_block *sb; | |
219 | struct ocfs2_super *osb; | |
220 | int status = -EINVAL; | |
221 | ||
222 | mlog_entry("(0x%p, size:%"MLFu64")\n", inode, fe->i_size); | |
223 | ||
224 | sb = inode->i_sb; | |
225 | osb = OCFS2_SB(sb); | |
226 | ||
227 | /* this means that read_inode cannot create a superblock inode | |
228 | * today. change if needed. */ | |
229 | if (!OCFS2_IS_VALID_DINODE(fe) || | |
230 | !(fe->i_flags & cpu_to_le32(OCFS2_VALID_FL))) { | |
231 | mlog(ML_ERROR, "Invalid dinode: i_ino=%lu, i_blkno=%"MLFu64", " | |
232 | "signature = %.*s, flags = 0x%x\n", | |
233 | inode->i_ino, le64_to_cpu(fe->i_blkno), 7, | |
234 | fe->i_signature, le32_to_cpu(fe->i_flags)); | |
235 | goto bail; | |
236 | } | |
237 | ||
238 | if (le32_to_cpu(fe->i_fs_generation) != osb->fs_generation) { | |
239 | mlog(ML_ERROR, "file entry generation does not match " | |
240 | "superblock! osb->fs_generation=%x, " | |
241 | "fe->i_fs_generation=%x\n", | |
242 | osb->fs_generation, le32_to_cpu(fe->i_fs_generation)); | |
243 | goto bail; | |
244 | } | |
245 | ||
246 | inode->i_version = 1; | |
247 | inode->i_generation = le32_to_cpu(fe->i_generation); | |
248 | inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev)); | |
249 | inode->i_mode = le16_to_cpu(fe->i_mode); | |
250 | inode->i_uid = le32_to_cpu(fe->i_uid); | |
251 | inode->i_gid = le32_to_cpu(fe->i_gid); | |
252 | inode->i_blksize = (u32)osb->s_clustersize; | |
253 | ||
254 | /* Fast symlinks will have i_size but no allocated clusters. */ | |
255 | if (S_ISLNK(inode->i_mode) && !fe->i_clusters) | |
256 | inode->i_blocks = 0; | |
257 | else | |
258 | inode->i_blocks = | |
259 | ocfs2_align_bytes_to_sectors(le64_to_cpu(fe->i_size)); | |
260 | inode->i_mapping->a_ops = &ocfs2_aops; | |
261 | inode->i_flags |= S_NOATIME; | |
262 | inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime); | |
263 | inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec); | |
264 | inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime); | |
265 | inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec); | |
266 | inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime); | |
267 | inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec); | |
268 | ||
269 | if (OCFS2_I(inode)->ip_blkno != le64_to_cpu(fe->i_blkno)) | |
270 | mlog(ML_ERROR, | |
271 | "ip_blkno %"MLFu64" != i_blkno %"MLFu64"!\n", | |
272 | OCFS2_I(inode)->ip_blkno, fe->i_blkno); | |
273 | ||
274 | OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); | |
275 | OCFS2_I(inode)->ip_orphaned_slot = OCFS2_INVALID_SLOT; | |
276 | ||
277 | if (create_ino) | |
278 | inode->i_ino = ino_from_blkno(inode->i_sb, | |
279 | le64_to_cpu(fe->i_blkno)); | |
280 | ||
281 | mlog(0, "blkno = %"MLFu64", ino = %lu, create_ino = %s\n", | |
282 | fe->i_blkno, inode->i_ino, create_ino ? "true" : "false"); | |
283 | ||
284 | inode->i_nlink = le16_to_cpu(fe->i_links_count); | |
285 | ||
286 | if (fe->i_flags & cpu_to_le32(OCFS2_LOCAL_ALLOC_FL)) { | |
287 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP; | |
288 | mlog(0, "local alloc inode: i_ino=%lu\n", inode->i_ino); | |
289 | } else if (fe->i_flags & cpu_to_le32(OCFS2_BITMAP_FL)) { | |
290 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP; | |
291 | } else if (fe->i_flags & cpu_to_le32(OCFS2_SUPER_BLOCK_FL)) { | |
292 | mlog(0, "superblock inode: i_ino=%lu\n", inode->i_ino); | |
293 | /* we can't actually hit this as read_inode can't | |
294 | * handle superblocks today ;-) */ | |
295 | BUG(); | |
296 | } | |
297 | ||
298 | switch (inode->i_mode & S_IFMT) { | |
299 | case S_IFREG: | |
300 | inode->i_fop = &ocfs2_fops; | |
301 | inode->i_op = &ocfs2_file_iops; | |
302 | i_size_write(inode, le64_to_cpu(fe->i_size)); | |
303 | break; | |
304 | case S_IFDIR: | |
305 | inode->i_op = &ocfs2_dir_iops; | |
306 | inode->i_fop = &ocfs2_dops; | |
307 | i_size_write(inode, le64_to_cpu(fe->i_size)); | |
308 | break; | |
309 | case S_IFLNK: | |
310 | if (ocfs2_inode_is_fast_symlink(inode)) | |
311 | inode->i_op = &ocfs2_fast_symlink_inode_operations; | |
312 | else | |
313 | inode->i_op = &ocfs2_symlink_inode_operations; | |
314 | i_size_write(inode, le64_to_cpu(fe->i_size)); | |
315 | break; | |
316 | default: | |
317 | inode->i_op = &ocfs2_special_file_iops; | |
318 | init_special_inode(inode, inode->i_mode, | |
319 | inode->i_rdev); | |
320 | break; | |
321 | } | |
322 | ||
323 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_rw_lockres, | |
324 | OCFS2_LOCK_TYPE_RW, inode); | |
325 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_meta_lockres, | |
326 | OCFS2_LOCK_TYPE_META, inode); | |
327 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_data_lockres, | |
328 | OCFS2_LOCK_TYPE_DATA, inode); | |
329 | ||
330 | status = 0; | |
331 | bail: | |
332 | mlog_exit(status); | |
333 | return status; | |
334 | } | |
335 | ||
336 | static int ocfs2_read_locked_inode(struct inode *inode, | |
337 | struct ocfs2_find_inode_args *args) | |
338 | { | |
339 | struct super_block *sb; | |
340 | struct ocfs2_super *osb; | |
341 | struct ocfs2_dinode *fe; | |
342 | struct buffer_head *bh = NULL; | |
343 | int status; | |
344 | int sysfile = 0; | |
345 | ||
346 | mlog_entry("(0x%p, 0x%p)\n", inode, args); | |
347 | ||
348 | status = -EINVAL; | |
349 | if (inode == NULL || inode->i_sb == NULL) { | |
350 | mlog(ML_ERROR, "bad inode\n"); | |
351 | goto bail; | |
352 | } | |
353 | sb = inode->i_sb; | |
354 | osb = OCFS2_SB(sb); | |
355 | ||
356 | if (!args) { | |
357 | mlog(ML_ERROR, "bad inode args\n"); | |
358 | make_bad_inode(inode); | |
359 | goto bail; | |
360 | } | |
361 | ||
362 | /* Read the FE off disk. This is safe because the kernel only | |
363 | * does one read_inode2 for a new inode, and if it doesn't | |
364 | * exist yet then nobody can be working on it! */ | |
365 | status = ocfs2_read_block(osb, args->fi_blkno, &bh, 0, NULL); | |
366 | if (status < 0) { | |
367 | mlog_errno(status); | |
368 | make_bad_inode(inode); | |
369 | goto bail; | |
370 | } | |
371 | ||
372 | fe = (struct ocfs2_dinode *) bh->b_data; | |
373 | if (!OCFS2_IS_VALID_DINODE(fe)) { | |
374 | mlog(ML_ERROR, "Invalid dinode #%"MLFu64": signature = %.*s\n", | |
375 | fe->i_blkno, 7, fe->i_signature); | |
376 | make_bad_inode(inode); | |
377 | goto bail; | |
378 | } | |
379 | ||
380 | if (fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)) | |
381 | sysfile = 1; | |
382 | ||
383 | if (S_ISCHR(le16_to_cpu(fe->i_mode)) || | |
384 | S_ISBLK(le16_to_cpu(fe->i_mode))) | |
385 | inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev)); | |
386 | ||
387 | status = -EINVAL; | |
388 | if (ocfs2_populate_inode(inode, fe, 0) < 0) { | |
389 | mlog(ML_ERROR, "populate inode failed! i_blkno=%"MLFu64", " | |
390 | "i_ino=%lu\n", fe->i_blkno, inode->i_ino); | |
391 | make_bad_inode(inode); | |
392 | goto bail; | |
393 | } | |
394 | ||
395 | BUG_ON(args->fi_blkno != le64_to_cpu(fe->i_blkno)); | |
396 | ||
397 | if (sysfile) | |
398 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SYSTEM_FILE; | |
399 | ||
400 | status = 0; | |
401 | ||
402 | bail: | |
403 | if (args && bh) | |
404 | brelse(bh); | |
405 | ||
406 | mlog_exit(status); | |
407 | return status; | |
408 | } | |
409 | ||
410 | void ocfs2_sync_blockdev(struct super_block *sb) | |
411 | { | |
412 | sync_blockdev(sb->s_bdev); | |
413 | } | |
414 | ||
415 | static int ocfs2_truncate_for_delete(struct ocfs2_super *osb, | |
416 | struct inode *inode, | |
417 | struct buffer_head *fe_bh) | |
418 | { | |
419 | int status = 0; | |
420 | struct ocfs2_journal_handle *handle = NULL; | |
421 | struct ocfs2_truncate_context *tc = NULL; | |
422 | struct ocfs2_dinode *fe; | |
423 | ||
424 | mlog_entry_void(); | |
425 | ||
426 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
427 | ||
428 | /* zero allocation, zero truncate :) */ | |
429 | if (!fe->i_clusters) | |
430 | goto bail; | |
431 | ||
432 | handle = ocfs2_start_trans(osb, handle, OCFS2_INODE_UPDATE_CREDITS); | |
433 | if (IS_ERR(handle)) { | |
434 | status = PTR_ERR(handle); | |
435 | handle = NULL; | |
436 | mlog_errno(status); | |
437 | goto bail; | |
438 | } | |
439 | ||
440 | status = ocfs2_set_inode_size(handle, inode, fe_bh, 0ULL); | |
441 | if (status < 0) { | |
442 | mlog_errno(status); | |
443 | goto bail; | |
444 | } | |
445 | ||
446 | ocfs2_commit_trans(handle); | |
447 | handle = NULL; | |
448 | ||
449 | status = ocfs2_prepare_truncate(osb, inode, fe_bh, &tc); | |
450 | if (status < 0) { | |
451 | mlog_errno(status); | |
452 | goto bail; | |
453 | } | |
454 | ||
455 | status = ocfs2_commit_truncate(osb, inode, fe_bh, tc); | |
456 | if (status < 0) { | |
457 | mlog_errno(status); | |
458 | goto bail; | |
459 | } | |
460 | bail: | |
461 | if (handle) | |
462 | ocfs2_commit_trans(handle); | |
463 | ||
464 | mlog_exit(status); | |
465 | return status; | |
466 | } | |
467 | ||
468 | static int ocfs2_remove_inode(struct inode *inode, | |
469 | struct buffer_head *di_bh, | |
470 | struct inode *orphan_dir_inode, | |
471 | struct buffer_head *orphan_dir_bh) | |
472 | { | |
473 | int status; | |
474 | struct inode *inode_alloc_inode = NULL; | |
475 | struct buffer_head *inode_alloc_bh = NULL; | |
476 | struct ocfs2_journal_handle *handle; | |
477 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
478 | struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data; | |
479 | ||
480 | inode_alloc_inode = | |
481 | ocfs2_get_system_file_inode(osb, INODE_ALLOC_SYSTEM_INODE, | |
482 | le16_to_cpu(di->i_suballoc_slot)); | |
483 | if (!inode_alloc_inode) { | |
484 | status = -EEXIST; | |
485 | mlog_errno(status); | |
486 | goto bail; | |
487 | } | |
488 | ||
1b1dcc1b | 489 | mutex_lock(&inode_alloc_inode->i_mutex); |
ccd979bd MF |
490 | status = ocfs2_meta_lock(inode_alloc_inode, NULL, &inode_alloc_bh, 1); |
491 | if (status < 0) { | |
1b1dcc1b | 492 | mutex_unlock(&inode_alloc_inode->i_mutex); |
ccd979bd MF |
493 | |
494 | mlog_errno(status); | |
495 | goto bail; | |
496 | } | |
497 | ||
498 | handle = ocfs2_start_trans(osb, NULL, OCFS2_DELETE_INODE_CREDITS); | |
499 | if (IS_ERR(handle)) { | |
500 | status = PTR_ERR(handle); | |
501 | mlog_errno(status); | |
502 | goto bail_unlock; | |
503 | } | |
504 | ||
505 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, | |
506 | orphan_dir_bh); | |
507 | if (status < 0) { | |
508 | mlog_errno(status); | |
509 | goto bail_commit; | |
510 | } | |
511 | ||
512 | /* set the inodes dtime */ | |
513 | status = ocfs2_journal_access(handle, inode, di_bh, | |
514 | OCFS2_JOURNAL_ACCESS_WRITE); | |
515 | if (status < 0) { | |
516 | mlog_errno(status); | |
517 | goto bail_commit; | |
518 | } | |
519 | ||
520 | di->i_dtime = cpu_to_le64(CURRENT_TIME.tv_sec); | |
521 | le32_and_cpu(&di->i_flags, ~(OCFS2_VALID_FL | OCFS2_ORPHANED_FL)); | |
522 | ||
523 | status = ocfs2_journal_dirty(handle, di_bh); | |
524 | if (status < 0) { | |
525 | mlog_errno(status); | |
526 | goto bail_commit; | |
527 | } | |
528 | ||
529 | ocfs2_remove_from_cache(inode, di_bh); | |
530 | ||
531 | status = ocfs2_free_dinode(handle, inode_alloc_inode, | |
532 | inode_alloc_bh, di); | |
533 | if (status < 0) | |
534 | mlog_errno(status); | |
535 | ||
536 | bail_commit: | |
537 | ocfs2_commit_trans(handle); | |
538 | bail_unlock: | |
539 | ocfs2_meta_unlock(inode_alloc_inode, 1); | |
1b1dcc1b | 540 | mutex_unlock(&inode_alloc_inode->i_mutex); |
ccd979bd MF |
541 | brelse(inode_alloc_bh); |
542 | bail: | |
543 | iput(inode_alloc_inode); | |
544 | ||
545 | return status; | |
546 | } | |
547 | ||
b4df6ed8 MF |
548 | /* |
549 | * Serialize with orphan dir recovery. If the process doing | |
550 | * recovery on this orphan dir does an iget() with the dir | |
551 | * i_mutex held, we'll deadlock here. Instead we detect this | |
552 | * and exit early - recovery will wipe this inode for us. | |
553 | */ | |
554 | static int ocfs2_check_orphan_recovery_state(struct ocfs2_super *osb, | |
555 | int slot) | |
556 | { | |
557 | int ret = 0; | |
558 | ||
559 | spin_lock(&osb->osb_lock); | |
560 | if (ocfs2_node_map_test_bit(osb, &osb->osb_recovering_orphan_dirs, slot)) { | |
561 | mlog(0, "Recovery is happening on orphan dir %d, will skip " | |
562 | "this inode\n", slot); | |
563 | ret = -EDEADLK; | |
564 | goto out; | |
565 | } | |
566 | /* This signals to the orphan recovery process that it should | |
567 | * wait for us to handle the wipe. */ | |
568 | osb->osb_orphan_wipes[slot]++; | |
569 | out: | |
570 | spin_unlock(&osb->osb_lock); | |
571 | return ret; | |
572 | } | |
573 | ||
574 | static void ocfs2_signal_wipe_completion(struct ocfs2_super *osb, | |
575 | int slot) | |
576 | { | |
577 | spin_lock(&osb->osb_lock); | |
578 | osb->osb_orphan_wipes[slot]--; | |
579 | spin_unlock(&osb->osb_lock); | |
580 | ||
581 | wake_up(&osb->osb_wipe_event); | |
582 | } | |
583 | ||
ccd979bd MF |
584 | static int ocfs2_wipe_inode(struct inode *inode, |
585 | struct buffer_head *di_bh) | |
586 | { | |
587 | int status, orphaned_slot; | |
588 | struct inode *orphan_dir_inode = NULL; | |
589 | struct buffer_head *orphan_dir_bh = NULL; | |
590 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
591 | ||
592 | /* We've already voted on this so it should be readonly - no | |
593 | * spinlock needed. */ | |
594 | orphaned_slot = OCFS2_I(inode)->ip_orphaned_slot; | |
b4df6ed8 MF |
595 | |
596 | status = ocfs2_check_orphan_recovery_state(osb, orphaned_slot); | |
597 | if (status) | |
598 | return status; | |
599 | ||
ccd979bd MF |
600 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, |
601 | ORPHAN_DIR_SYSTEM_INODE, | |
602 | orphaned_slot); | |
603 | if (!orphan_dir_inode) { | |
604 | status = -EEXIST; | |
605 | mlog_errno(status); | |
606 | goto bail; | |
607 | } | |
608 | ||
609 | /* Lock the orphan dir. The lock will be held for the entire | |
610 | * delete_inode operation. We do this now to avoid races with | |
611 | * recovery completion on other nodes. */ | |
1b1dcc1b | 612 | mutex_lock(&orphan_dir_inode->i_mutex); |
ccd979bd MF |
613 | status = ocfs2_meta_lock(orphan_dir_inode, NULL, &orphan_dir_bh, 1); |
614 | if (status < 0) { | |
1b1dcc1b | 615 | mutex_unlock(&orphan_dir_inode->i_mutex); |
ccd979bd MF |
616 | |
617 | mlog_errno(status); | |
618 | goto bail; | |
619 | } | |
620 | ||
621 | /* we do this while holding the orphan dir lock because we | |
622 | * don't want recovery being run from another node to vote for | |
623 | * an inode delete on us -- this will result in two nodes | |
624 | * truncating the same file! */ | |
625 | status = ocfs2_truncate_for_delete(osb, inode, di_bh); | |
626 | if (status < 0) { | |
627 | mlog_errno(status); | |
628 | goto bail_unlock_dir; | |
629 | } | |
630 | ||
631 | status = ocfs2_remove_inode(inode, di_bh, orphan_dir_inode, | |
632 | orphan_dir_bh); | |
633 | if (status < 0) | |
634 | mlog_errno(status); | |
635 | ||
636 | bail_unlock_dir: | |
637 | ocfs2_meta_unlock(orphan_dir_inode, 1); | |
1b1dcc1b | 638 | mutex_unlock(&orphan_dir_inode->i_mutex); |
ccd979bd MF |
639 | brelse(orphan_dir_bh); |
640 | bail: | |
641 | iput(orphan_dir_inode); | |
b4df6ed8 | 642 | ocfs2_signal_wipe_completion(osb, orphaned_slot); |
ccd979bd MF |
643 | |
644 | return status; | |
645 | } | |
646 | ||
647 | /* There is a series of simple checks that should be done before a | |
648 | * vote is even considered. Encapsulate those in this function. */ | |
649 | static int ocfs2_inode_is_valid_to_delete(struct inode *inode) | |
650 | { | |
651 | int ret = 0; | |
652 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
653 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
654 | ||
655 | /* We shouldn't be getting here for the root directory | |
656 | * inode.. */ | |
657 | if (inode == osb->root_inode) { | |
658 | mlog(ML_ERROR, "Skipping delete of root inode.\n"); | |
659 | goto bail; | |
660 | } | |
661 | ||
662 | /* If we're coming from process_vote we can't go into our own | |
663 | * voting [hello, deadlock city!], so unforuntately we just | |
664 | * have to skip deleting this guy. That's OK though because | |
665 | * the node who's doing the actual deleting should handle it | |
666 | * anyway. */ | |
667 | if (current == osb->vote_task) { | |
668 | mlog(0, "Skipping delete of %lu because we're currently " | |
669 | "in process_vote\n", inode->i_ino); | |
670 | goto bail; | |
671 | } | |
672 | ||
673 | spin_lock(&oi->ip_lock); | |
674 | /* OCFS2 *never* deletes system files. This should technically | |
675 | * never get here as system file inodes should always have a | |
676 | * positive link count. */ | |
677 | if (oi->ip_flags & OCFS2_INODE_SYSTEM_FILE) { | |
678 | mlog(ML_ERROR, "Skipping delete of system file %"MLFu64".\n", | |
679 | oi->ip_blkno); | |
680 | goto bail_unlock; | |
681 | } | |
682 | ||
683 | /* If we have voted "yes" on the wipe of this inode for | |
684 | * another node, it will be marked here so we can safely skip | |
685 | * it. Recovery will cleanup any inodes we might inadvertantly | |
686 | * skip here. */ | |
687 | if (oi->ip_flags & OCFS2_INODE_SKIP_DELETE) { | |
688 | mlog(0, "Skipping delete of %lu because another node " | |
689 | "has done this for us.\n", inode->i_ino); | |
690 | goto bail_unlock; | |
691 | } | |
692 | ||
693 | ret = 1; | |
694 | bail_unlock: | |
695 | spin_unlock(&oi->ip_lock); | |
696 | bail: | |
697 | return ret; | |
698 | } | |
699 | ||
700 | /* Query the cluster to determine whether we should wipe an inode from | |
701 | * disk or not. | |
702 | * | |
703 | * Requires the inode to have the cluster lock. */ | |
704 | static int ocfs2_query_inode_wipe(struct inode *inode, | |
705 | struct buffer_head *di_bh, | |
706 | int *wipe) | |
707 | { | |
708 | int status = 0; | |
709 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
710 | struct ocfs2_dinode *di; | |
711 | ||
712 | *wipe = 0; | |
713 | ||
714 | /* While we were waiting for the cluster lock in | |
715 | * ocfs2_delete_inode, another node might have asked to delete | |
716 | * the inode. Recheck our flags to catch this. */ | |
717 | if (!ocfs2_inode_is_valid_to_delete(inode)) { | |
718 | mlog(0, "Skipping delete of %"MLFu64" because flags changed\n", | |
719 | oi->ip_blkno); | |
720 | goto bail; | |
721 | } | |
722 | ||
723 | /* Now that we have an up to date inode, we can double check | |
724 | * the link count. */ | |
725 | if (inode->i_nlink) { | |
726 | mlog(0, "Skipping delete of %"MLFu64" because nlink = %u\n", | |
727 | oi->ip_blkno, inode->i_nlink); | |
728 | goto bail; | |
729 | } | |
730 | ||
731 | /* Do some basic inode verification... */ | |
732 | di = (struct ocfs2_dinode *) di_bh->b_data; | |
733 | if (!(di->i_flags & cpu_to_le32(OCFS2_ORPHANED_FL))) { | |
734 | /* for lack of a better error? */ | |
735 | status = -EEXIST; | |
736 | mlog(ML_ERROR, | |
737 | "Inode %"MLFu64" (on-disk %"MLFu64") not orphaned! " | |
738 | "Disk flags 0x%x, inode flags 0x%x\n", | |
739 | oi->ip_blkno, di->i_blkno, di->i_flags, oi->ip_flags); | |
740 | goto bail; | |
741 | } | |
742 | ||
743 | /* has someone already deleted us?! baaad... */ | |
744 | if (di->i_dtime) { | |
745 | status = -EEXIST; | |
746 | mlog_errno(status); | |
747 | goto bail; | |
748 | } | |
749 | ||
750 | status = ocfs2_request_delete_vote(inode); | |
751 | /* -EBUSY means that other nodes are still using the | |
752 | * inode. We're done here though, so avoid doing anything on | |
753 | * disk and let them worry about deleting it. */ | |
754 | if (status == -EBUSY) { | |
755 | status = 0; | |
756 | mlog(0, "Skipping delete of %"MLFu64" because it is in use on" | |
757 | "other nodes\n", oi->ip_blkno); | |
758 | goto bail; | |
759 | } | |
760 | if (status < 0) { | |
761 | mlog_errno(status); | |
762 | goto bail; | |
763 | } | |
764 | ||
765 | spin_lock(&oi->ip_lock); | |
766 | if (oi->ip_orphaned_slot == OCFS2_INVALID_SLOT) { | |
767 | /* Nobody knew which slot this inode was orphaned | |
768 | * into. This may happen during node death and | |
769 | * recovery knows how to clean it up so we can safely | |
770 | * ignore this inode for now on. */ | |
771 | mlog(0, "Nobody knew where inode %"MLFu64" was orphaned!\n", | |
772 | oi->ip_blkno); | |
773 | } else { | |
774 | *wipe = 1; | |
775 | ||
776 | mlog(0, "Inode %"MLFu64" is ok to wipe from orphan dir %d\n", | |
777 | oi->ip_blkno, oi->ip_orphaned_slot); | |
778 | } | |
779 | spin_unlock(&oi->ip_lock); | |
780 | ||
781 | bail: | |
782 | return status; | |
783 | } | |
784 | ||
785 | /* Support function for ocfs2_delete_inode. Will help us keep the | |
786 | * inode data in a consistent state for clear_inode. Always truncates | |
787 | * pages, optionally sync's them first. */ | |
788 | static void ocfs2_cleanup_delete_inode(struct inode *inode, | |
789 | int sync_data) | |
790 | { | |
791 | mlog(0, "Cleanup inode %"MLFu64", sync = %d\n", | |
792 | OCFS2_I(inode)->ip_blkno, sync_data); | |
793 | if (sync_data) | |
794 | write_inode_now(inode, 1); | |
795 | truncate_inode_pages(&inode->i_data, 0); | |
796 | } | |
797 | ||
798 | void ocfs2_delete_inode(struct inode *inode) | |
799 | { | |
800 | int wipe, status; | |
801 | sigset_t blocked, oldset; | |
802 | struct buffer_head *di_bh = NULL; | |
803 | ||
804 | mlog_entry("(inode->i_ino = %lu)\n", inode->i_ino); | |
805 | ||
806 | if (is_bad_inode(inode)) { | |
807 | mlog(0, "Skipping delete of bad inode\n"); | |
808 | goto bail; | |
809 | } | |
810 | ||
811 | if (!ocfs2_inode_is_valid_to_delete(inode)) { | |
812 | /* It's probably not necessary to truncate_inode_pages | |
813 | * here but we do it for safety anyway (it will most | |
814 | * likely be a no-op anyway) */ | |
815 | ocfs2_cleanup_delete_inode(inode, 0); | |
816 | goto bail; | |
817 | } | |
818 | ||
819 | /* We want to block signals in delete_inode as the lock and | |
820 | * messaging paths may return us -ERESTARTSYS. Which would | |
821 | * cause us to exit early, resulting in inodes being orphaned | |
822 | * forever. */ | |
823 | sigfillset(&blocked); | |
824 | status = sigprocmask(SIG_BLOCK, &blocked, &oldset); | |
825 | if (status < 0) { | |
826 | mlog_errno(status); | |
827 | ocfs2_cleanup_delete_inode(inode, 1); | |
828 | goto bail; | |
829 | } | |
830 | ||
831 | /* Lock down the inode. This gives us an up to date view of | |
832 | * it's metadata (for verification), and allows us to | |
833 | * serialize delete_inode votes. | |
834 | * | |
835 | * Even though we might be doing a truncate, we don't take the | |
836 | * allocation lock here as it won't be needed - nobody will | |
837 | * have the file open. | |
838 | */ | |
839 | status = ocfs2_meta_lock(inode, NULL, &di_bh, 1); | |
840 | if (status < 0) { | |
841 | if (status != -ENOENT) | |
842 | mlog_errno(status); | |
843 | ocfs2_cleanup_delete_inode(inode, 0); | |
844 | goto bail_unblock; | |
845 | } | |
846 | ||
847 | /* Query the cluster. This will be the final decision made | |
848 | * before we go ahead and wipe the inode. */ | |
849 | status = ocfs2_query_inode_wipe(inode, di_bh, &wipe); | |
850 | if (!wipe || status < 0) { | |
851 | /* Error and inode busy vote both mean we won't be | |
852 | * removing the inode, so they take almost the same | |
853 | * path. */ | |
854 | if (status < 0) | |
855 | mlog_errno(status); | |
856 | ||
857 | /* Someone in the cluster has voted to not wipe this | |
858 | * inode, or it was never completely orphaned. Write | |
859 | * out the pages and exit now. */ | |
860 | ocfs2_cleanup_delete_inode(inode, 1); | |
861 | goto bail_unlock_inode; | |
862 | } | |
863 | ||
864 | ocfs2_cleanup_delete_inode(inode, 0); | |
865 | ||
866 | status = ocfs2_wipe_inode(inode, di_bh); | |
867 | if (status < 0) { | |
b4df6ed8 MF |
868 | if (status != -EDEADLK) |
869 | mlog_errno(status); | |
ccd979bd MF |
870 | goto bail_unlock_inode; |
871 | } | |
872 | ||
873 | /* Mark the inode as successfully deleted. This is important | |
874 | * for ocfs2_clear_inode as it will check this flag and skip | |
875 | * any checkpointing work */ | |
876 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_DELETED; | |
877 | ||
878 | bail_unlock_inode: | |
879 | ocfs2_meta_unlock(inode, 1); | |
880 | brelse(di_bh); | |
881 | bail_unblock: | |
882 | status = sigprocmask(SIG_SETMASK, &oldset, NULL); | |
883 | if (status < 0) | |
884 | mlog_errno(status); | |
885 | bail: | |
886 | clear_inode(inode); | |
887 | mlog_exit_void(); | |
888 | } | |
889 | ||
890 | void ocfs2_clear_inode(struct inode *inode) | |
891 | { | |
892 | int status; | |
893 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
894 | ||
895 | mlog_entry_void(); | |
896 | ||
897 | if (!inode) | |
898 | goto bail; | |
899 | ||
900 | mlog(0, "Clearing inode: %"MLFu64", nlink = %u\n", | |
901 | OCFS2_I(inode)->ip_blkno, inode->i_nlink); | |
902 | ||
903 | mlog_bug_on_msg(OCFS2_SB(inode->i_sb) == NULL, | |
904 | "Inode=%lu\n", inode->i_ino); | |
905 | ||
906 | /* Do these before all the other work so that we don't bounce | |
907 | * the vote thread while waiting to destroy the locks. */ | |
908 | ocfs2_mark_lockres_freeing(&oi->ip_rw_lockres); | |
909 | ocfs2_mark_lockres_freeing(&oi->ip_meta_lockres); | |
910 | ocfs2_mark_lockres_freeing(&oi->ip_data_lockres); | |
911 | ||
912 | /* We very well may get a clear_inode before all an inodes | |
913 | * metadata has hit disk. Of course, we can't drop any cluster | |
914 | * locks until the journal has finished with it. The only | |
915 | * exception here are successfully wiped inodes - their | |
916 | * metadata can now be considered to be part of the system | |
917 | * inodes from which it came. */ | |
918 | if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED)) | |
919 | ocfs2_checkpoint_inode(inode); | |
920 | ||
921 | mlog_bug_on_msg(!list_empty(&oi->ip_io_markers), | |
922 | "Clear inode of %"MLFu64", inode has io markers\n", | |
923 | oi->ip_blkno); | |
924 | ||
925 | ocfs2_extent_map_drop(inode, 0); | |
926 | ocfs2_extent_map_init(inode); | |
927 | ||
928 | status = ocfs2_drop_inode_locks(inode); | |
929 | if (status < 0) | |
930 | mlog_errno(status); | |
931 | ||
932 | ocfs2_lock_res_free(&oi->ip_rw_lockres); | |
933 | ocfs2_lock_res_free(&oi->ip_meta_lockres); | |
934 | ocfs2_lock_res_free(&oi->ip_data_lockres); | |
935 | ||
936 | ocfs2_metadata_cache_purge(inode); | |
937 | ||
938 | mlog_bug_on_msg(oi->ip_metadata_cache.ci_num_cached, | |
939 | "Clear inode of %"MLFu64", inode has %u cache items\n", | |
940 | oi->ip_blkno, oi->ip_metadata_cache.ci_num_cached); | |
941 | ||
942 | mlog_bug_on_msg(!(oi->ip_flags & OCFS2_INODE_CACHE_INLINE), | |
943 | "Clear inode of %"MLFu64", inode has a bad flag\n", | |
944 | oi->ip_blkno); | |
945 | ||
946 | mlog_bug_on_msg(spin_is_locked(&oi->ip_lock), | |
947 | "Clear inode of %"MLFu64", inode is locked\n", | |
948 | oi->ip_blkno); | |
949 | ||
251b6ecc MF |
950 | mlog_bug_on_msg(!mutex_trylock(&oi->ip_io_mutex), |
951 | "Clear inode of %"MLFu64", io_mutex is locked\n", | |
ccd979bd | 952 | oi->ip_blkno); |
251b6ecc | 953 | mutex_unlock(&oi->ip_io_mutex); |
ccd979bd MF |
954 | |
955 | /* | |
956 | * down_trylock() returns 0, down_write_trylock() returns 1 | |
957 | * kernel 1, world 0 | |
958 | */ | |
959 | mlog_bug_on_msg(!down_write_trylock(&oi->ip_alloc_sem), | |
960 | "Clear inode of %"MLFu64", alloc_sem is locked\n", | |
961 | oi->ip_blkno); | |
962 | up_write(&oi->ip_alloc_sem); | |
963 | ||
964 | mlog_bug_on_msg(oi->ip_open_count, | |
965 | "Clear inode of %"MLFu64" has open count %d\n", | |
966 | oi->ip_blkno, oi->ip_open_count); | |
967 | mlog_bug_on_msg(!list_empty(&oi->ip_handle_list), | |
968 | "Clear inode of %"MLFu64" has non empty handle list\n", | |
969 | oi->ip_blkno); | |
970 | mlog_bug_on_msg(oi->ip_handle, | |
971 | "Clear inode of %"MLFu64" has non empty handle pointer\n", | |
972 | oi->ip_blkno); | |
973 | ||
974 | /* Clear all other flags. */ | |
975 | oi->ip_flags = OCFS2_INODE_CACHE_INLINE; | |
976 | oi->ip_created_trans = 0; | |
977 | oi->ip_last_trans = 0; | |
978 | oi->ip_dir_start_lookup = 0; | |
979 | oi->ip_blkno = 0ULL; | |
980 | ||
981 | bail: | |
982 | mlog_exit_void(); | |
983 | } | |
984 | ||
985 | /* Called under inode_lock, with no more references on the | |
986 | * struct inode, so it's safe here to check the flags field | |
987 | * and to manipulate i_nlink without any other locks. */ | |
988 | void ocfs2_drop_inode(struct inode *inode) | |
989 | { | |
990 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
991 | ||
992 | mlog_entry_void(); | |
993 | ||
994 | mlog(0, "Drop inode %"MLFu64", nlink = %u, ip_flags = 0x%x\n", | |
995 | oi->ip_blkno, inode->i_nlink, oi->ip_flags); | |
996 | ||
997 | /* Testing ip_orphaned_slot here wouldn't work because we may | |
998 | * not have gotten a delete_inode vote from any other nodes | |
999 | * yet. */ | |
1000 | if (oi->ip_flags & OCFS2_INODE_MAYBE_ORPHANED) { | |
1001 | mlog(0, "Inode was orphaned on another node, clearing nlink.\n"); | |
1002 | inode->i_nlink = 0; | |
1003 | } | |
1004 | ||
1005 | generic_drop_inode(inode); | |
1006 | ||
1007 | mlog_exit_void(); | |
1008 | } | |
1009 | ||
1010 | /* | |
1011 | * TODO: this should probably be merged into ocfs2_get_block | |
1012 | * | |
1013 | * However, you now need to pay attention to the cont_prepare_write() | |
1014 | * stuff in ocfs2_get_block (that is, ocfs2_get_block pretty much | |
1015 | * expects never to extend). | |
1016 | */ | |
1017 | struct buffer_head *ocfs2_bread(struct inode *inode, | |
1018 | int block, int *err, int reada) | |
1019 | { | |
1020 | struct buffer_head *bh = NULL; | |
1021 | int tmperr; | |
1022 | u64 p_blkno; | |
1023 | int readflags = OCFS2_BH_CACHED; | |
1024 | ||
1025 | #if 0 | |
1026 | /* only turn this on if we know we can deal with read_block | |
1027 | * returning nothing */ | |
1028 | if (reada) | |
1029 | readflags |= OCFS2_BH_READAHEAD; | |
1030 | #endif | |
1031 | ||
1032 | if (((u64)block << inode->i_sb->s_blocksize_bits) >= | |
1033 | i_size_read(inode)) { | |
1034 | BUG_ON(!reada); | |
1035 | return NULL; | |
1036 | } | |
1037 | ||
1038 | tmperr = ocfs2_extent_map_get_blocks(inode, block, 1, | |
1039 | &p_blkno, NULL); | |
1040 | if (tmperr < 0) { | |
1041 | mlog_errno(tmperr); | |
1042 | goto fail; | |
1043 | } | |
1044 | ||
1045 | tmperr = ocfs2_read_block(OCFS2_SB(inode->i_sb), p_blkno, &bh, | |
1046 | readflags, inode); | |
1047 | if (tmperr < 0) | |
1048 | goto fail; | |
1049 | ||
1050 | tmperr = 0; | |
1051 | ||
1052 | *err = 0; | |
1053 | return bh; | |
1054 | ||
1055 | fail: | |
1056 | if (bh) { | |
1057 | brelse(bh); | |
1058 | bh = NULL; | |
1059 | } | |
1060 | *err = -EIO; | |
1061 | return NULL; | |
1062 | } | |
1063 | ||
1064 | /* | |
1065 | * This is called from our getattr. | |
1066 | */ | |
1067 | int ocfs2_inode_revalidate(struct dentry *dentry) | |
1068 | { | |
1069 | struct inode *inode = dentry->d_inode; | |
1070 | int status = 0; | |
1071 | ||
1072 | mlog_entry("(inode = 0x%p, ino = %"MLFu64")\n", inode, | |
1073 | inode ? OCFS2_I(inode)->ip_blkno : 0ULL); | |
1074 | ||
1075 | if (!inode) { | |
1076 | mlog(0, "eep, no inode!\n"); | |
1077 | status = -ENOENT; | |
1078 | goto bail; | |
1079 | } | |
1080 | ||
1081 | spin_lock(&OCFS2_I(inode)->ip_lock); | |
1082 | if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED) { | |
1083 | spin_unlock(&OCFS2_I(inode)->ip_lock); | |
1084 | mlog(0, "inode deleted!\n"); | |
1085 | status = -ENOENT; | |
1086 | goto bail; | |
1087 | } | |
1088 | spin_unlock(&OCFS2_I(inode)->ip_lock); | |
1089 | ||
1090 | /* Let ocfs2_meta_lock do the work of updating our struct | |
1091 | * inode for us. */ | |
1092 | status = ocfs2_meta_lock(inode, NULL, NULL, 0); | |
1093 | if (status < 0) { | |
1094 | if (status != -ENOENT) | |
1095 | mlog_errno(status); | |
1096 | goto bail; | |
1097 | } | |
1098 | ocfs2_meta_unlock(inode, 0); | |
1099 | bail: | |
1100 | mlog_exit(status); | |
1101 | ||
1102 | return status; | |
1103 | } | |
1104 | ||
1105 | /* | |
1106 | * Updates a disk inode from a | |
1107 | * struct inode. | |
1108 | * Only takes ip_lock. | |
1109 | */ | |
1110 | int ocfs2_mark_inode_dirty(struct ocfs2_journal_handle *handle, | |
1111 | struct inode *inode, | |
1112 | struct buffer_head *bh) | |
1113 | { | |
1114 | int status; | |
1115 | struct ocfs2_dinode *fe = (struct ocfs2_dinode *) bh->b_data; | |
1116 | ||
1117 | mlog_entry("(inode %"MLFu64")\n", OCFS2_I(inode)->ip_blkno); | |
1118 | ||
1119 | status = ocfs2_journal_access(handle, inode, bh, | |
1120 | OCFS2_JOURNAL_ACCESS_WRITE); | |
1121 | if (status < 0) { | |
1122 | mlog_errno(status); | |
1123 | goto leave; | |
1124 | } | |
1125 | ||
1126 | spin_lock(&OCFS2_I(inode)->ip_lock); | |
1127 | fe->i_clusters = cpu_to_le32(OCFS2_I(inode)->ip_clusters); | |
1128 | spin_unlock(&OCFS2_I(inode)->ip_lock); | |
1129 | ||
1130 | fe->i_size = cpu_to_le64(i_size_read(inode)); | |
1131 | fe->i_links_count = cpu_to_le16(inode->i_nlink); | |
1132 | fe->i_uid = cpu_to_le32(inode->i_uid); | |
1133 | fe->i_gid = cpu_to_le32(inode->i_gid); | |
1134 | fe->i_mode = cpu_to_le16(inode->i_mode); | |
1135 | fe->i_atime = cpu_to_le64(inode->i_atime.tv_sec); | |
1136 | fe->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec); | |
1137 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); | |
1138 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
1139 | fe->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec); | |
1140 | fe->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); | |
1141 | ||
1142 | status = ocfs2_journal_dirty(handle, bh); | |
1143 | if (status < 0) | |
1144 | mlog_errno(status); | |
1145 | ||
1146 | status = 0; | |
1147 | leave: | |
1148 | ||
1149 | mlog_exit(status); | |
1150 | return status; | |
1151 | } | |
1152 | ||
1153 | /* | |
1154 | * | |
1155 | * Updates a struct inode from a disk inode. | |
1156 | * does no i/o, only takes ip_lock. | |
1157 | */ | |
1158 | void ocfs2_refresh_inode(struct inode *inode, | |
1159 | struct ocfs2_dinode *fe) | |
1160 | { | |
1161 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
1162 | ||
1163 | spin_lock(&OCFS2_I(inode)->ip_lock); | |
1164 | ||
1165 | OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); | |
1166 | i_size_write(inode, le64_to_cpu(fe->i_size)); | |
1167 | inode->i_nlink = le16_to_cpu(fe->i_links_count); | |
1168 | inode->i_uid = le32_to_cpu(fe->i_uid); | |
1169 | inode->i_gid = le32_to_cpu(fe->i_gid); | |
1170 | inode->i_mode = le16_to_cpu(fe->i_mode); | |
1171 | inode->i_blksize = (u32) osb->s_clustersize; | |
1172 | if (S_ISLNK(inode->i_mode) && le32_to_cpu(fe->i_clusters) == 0) | |
1173 | inode->i_blocks = 0; | |
1174 | else | |
1175 | inode->i_blocks = ocfs2_align_bytes_to_sectors(i_size_read(inode)); | |
1176 | inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime); | |
1177 | inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec); | |
1178 | inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime); | |
1179 | inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec); | |
1180 | inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime); | |
1181 | inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec); | |
1182 | ||
1183 | spin_unlock(&OCFS2_I(inode)->ip_lock); | |
1184 | } |