Commit | Line | Data |
---|---|---|
9e33d69f JK |
1 | /* |
2 | * Implementation of operations over local quota file | |
3 | */ | |
4 | ||
5 | #include <linux/fs.h> | |
6 | #include <linux/quota.h> | |
7 | #include <linux/quotaops.h> | |
8 | #include <linux/module.h> | |
9 | ||
10 | #define MLOG_MASK_PREFIX ML_QUOTA | |
11 | #include <cluster/masklog.h> | |
12 | ||
13 | #include "ocfs2_fs.h" | |
14 | #include "ocfs2.h" | |
15 | #include "inode.h" | |
16 | #include "alloc.h" | |
17 | #include "file.h" | |
18 | #include "buffer_head_io.h" | |
19 | #include "journal.h" | |
20 | #include "sysfile.h" | |
21 | #include "dlmglue.h" | |
22 | #include "quota.h" | |
4b3fa190 | 23 | #include "uptodate.h" |
9e33d69f JK |
24 | |
25 | /* Number of local quota structures per block */ | |
26 | static inline unsigned int ol_quota_entries_per_block(struct super_block *sb) | |
27 | { | |
28 | return ((sb->s_blocksize - OCFS2_QBLK_RESERVED_SPACE) / | |
29 | sizeof(struct ocfs2_local_disk_dqblk)); | |
30 | } | |
31 | ||
32 | /* Number of blocks with entries in one chunk */ | |
33 | static inline unsigned int ol_chunk_blocks(struct super_block *sb) | |
34 | { | |
35 | return ((sb->s_blocksize - sizeof(struct ocfs2_local_disk_chunk) - | |
36 | OCFS2_QBLK_RESERVED_SPACE) << 3) / | |
37 | ol_quota_entries_per_block(sb); | |
38 | } | |
39 | ||
40 | /* Number of entries in a chunk bitmap */ | |
41 | static unsigned int ol_chunk_entries(struct super_block *sb) | |
42 | { | |
43 | return ol_chunk_blocks(sb) * ol_quota_entries_per_block(sb); | |
44 | } | |
45 | ||
46 | /* Offset of the chunk in quota file */ | |
47 | static unsigned int ol_quota_chunk_block(struct super_block *sb, int c) | |
48 | { | |
49 | /* 1 block for local quota file info, 1 block per chunk for chunk info */ | |
50 | return 1 + (ol_chunk_blocks(sb) + 1) * c; | |
51 | } | |
52 | ||
2205363d JK |
53 | static unsigned int ol_dqblk_block(struct super_block *sb, int c, int off) |
54 | { | |
55 | int epb = ol_quota_entries_per_block(sb); | |
56 | ||
57 | return ol_quota_chunk_block(sb, c) + 1 + off / epb; | |
58 | } | |
59 | ||
60 | static unsigned int ol_dqblk_block_off(struct super_block *sb, int c, int off) | |
9e33d69f JK |
61 | { |
62 | int epb = ol_quota_entries_per_block(sb); | |
63 | ||
2205363d JK |
64 | return (off % epb) * sizeof(struct ocfs2_local_disk_dqblk); |
65 | } | |
66 | ||
67 | /* Offset of the dquot structure in the quota file */ | |
68 | static loff_t ol_dqblk_off(struct super_block *sb, int c, int off) | |
69 | { | |
70 | return (ol_dqblk_block(sb, c, off) << sb->s_blocksize_bits) + | |
71 | ol_dqblk_block_off(sb, c, off); | |
9e33d69f JK |
72 | } |
73 | ||
74 | /* Compute block number from given offset */ | |
75 | static inline unsigned int ol_dqblk_file_block(struct super_block *sb, loff_t off) | |
76 | { | |
77 | return off >> sb->s_blocksize_bits; | |
78 | } | |
79 | ||
80 | static inline unsigned int ol_dqblk_block_offset(struct super_block *sb, loff_t off) | |
81 | { | |
82 | return off & ((1 << sb->s_blocksize_bits) - 1); | |
83 | } | |
84 | ||
85 | /* Compute offset in the chunk of a structure with the given offset */ | |
86 | static int ol_dqblk_chunk_off(struct super_block *sb, int c, loff_t off) | |
87 | { | |
88 | int epb = ol_quota_entries_per_block(sb); | |
89 | ||
90 | return ((off >> sb->s_blocksize_bits) - | |
91 | ol_quota_chunk_block(sb, c) - 1) * epb | |
92 | + ((unsigned int)(off & ((1 << sb->s_blocksize_bits) - 1))) / | |
93 | sizeof(struct ocfs2_local_disk_dqblk); | |
94 | } | |
95 | ||
96 | /* Write bufferhead into the fs */ | |
97 | static int ocfs2_modify_bh(struct inode *inode, struct buffer_head *bh, | |
98 | void (*modify)(struct buffer_head *, void *), void *private) | |
99 | { | |
100 | struct super_block *sb = inode->i_sb; | |
101 | handle_t *handle; | |
102 | int status; | |
103 | ||
104 | handle = ocfs2_start_trans(OCFS2_SB(sb), 1); | |
105 | if (IS_ERR(handle)) { | |
106 | status = PTR_ERR(handle); | |
107 | mlog_errno(status); | |
108 | return status; | |
109 | } | |
13723d00 JB |
110 | status = ocfs2_journal_access_dq(handle, inode, bh, |
111 | OCFS2_JOURNAL_ACCESS_WRITE); | |
9e33d69f JK |
112 | if (status < 0) { |
113 | mlog_errno(status); | |
114 | ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
115 | return status; | |
116 | } | |
117 | lock_buffer(bh); | |
118 | modify(bh, private); | |
119 | unlock_buffer(bh); | |
120 | status = ocfs2_journal_dirty(handle, bh); | |
121 | if (status < 0) { | |
122 | mlog_errno(status); | |
123 | ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
124 | return status; | |
125 | } | |
126 | status = ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
127 | if (status < 0) { | |
128 | mlog_errno(status); | |
129 | return status; | |
130 | } | |
131 | return 0; | |
132 | } | |
133 | ||
134 | /* Check whether we understand format of quota files */ | |
135 | static int ocfs2_local_check_quota_file(struct super_block *sb, int type) | |
136 | { | |
137 | unsigned int lmagics[MAXQUOTAS] = OCFS2_LOCAL_QMAGICS; | |
138 | unsigned int lversions[MAXQUOTAS] = OCFS2_LOCAL_QVERSIONS; | |
139 | unsigned int gmagics[MAXQUOTAS] = OCFS2_GLOBAL_QMAGICS; | |
140 | unsigned int gversions[MAXQUOTAS] = OCFS2_GLOBAL_QVERSIONS; | |
141 | unsigned int ino[MAXQUOTAS] = { USER_QUOTA_SYSTEM_INODE, | |
142 | GROUP_QUOTA_SYSTEM_INODE }; | |
85eb8b73 | 143 | struct buffer_head *bh = NULL; |
9e33d69f JK |
144 | struct inode *linode = sb_dqopt(sb)->files[type]; |
145 | struct inode *ginode = NULL; | |
146 | struct ocfs2_disk_dqheader *dqhead; | |
147 | int status, ret = 0; | |
148 | ||
149 | /* First check whether we understand local quota file */ | |
85eb8b73 JB |
150 | status = ocfs2_read_quota_block(linode, 0, &bh); |
151 | if (status) { | |
9e33d69f JK |
152 | mlog_errno(status); |
153 | mlog(ML_ERROR, "failed to read quota file header (type=%d)\n", | |
154 | type); | |
155 | goto out_err; | |
156 | } | |
157 | dqhead = (struct ocfs2_disk_dqheader *)(bh->b_data); | |
158 | if (le32_to_cpu(dqhead->dqh_magic) != lmagics[type]) { | |
159 | mlog(ML_ERROR, "quota file magic does not match (%u != %u)," | |
160 | " type=%d\n", le32_to_cpu(dqhead->dqh_magic), | |
161 | lmagics[type], type); | |
162 | goto out_err; | |
163 | } | |
164 | if (le32_to_cpu(dqhead->dqh_version) != lversions[type]) { | |
165 | mlog(ML_ERROR, "quota file version does not match (%u != %u)," | |
166 | " type=%d\n", le32_to_cpu(dqhead->dqh_version), | |
167 | lversions[type], type); | |
168 | goto out_err; | |
169 | } | |
170 | brelse(bh); | |
171 | bh = NULL; | |
172 | ||
173 | /* Next check whether we understand global quota file */ | |
174 | ginode = ocfs2_get_system_file_inode(OCFS2_SB(sb), ino[type], | |
175 | OCFS2_INVALID_SLOT); | |
176 | if (!ginode) { | |
177 | mlog(ML_ERROR, "cannot get global quota file inode " | |
178 | "(type=%d)\n", type); | |
179 | goto out_err; | |
180 | } | |
181 | /* Since the header is read only, we don't care about locking */ | |
85eb8b73 JB |
182 | status = ocfs2_read_quota_block(ginode, 0, &bh); |
183 | if (status) { | |
9e33d69f JK |
184 | mlog_errno(status); |
185 | mlog(ML_ERROR, "failed to read global quota file header " | |
186 | "(type=%d)\n", type); | |
187 | goto out_err; | |
188 | } | |
189 | dqhead = (struct ocfs2_disk_dqheader *)(bh->b_data); | |
190 | if (le32_to_cpu(dqhead->dqh_magic) != gmagics[type]) { | |
191 | mlog(ML_ERROR, "global quota file magic does not match " | |
192 | "(%u != %u), type=%d\n", | |
193 | le32_to_cpu(dqhead->dqh_magic), gmagics[type], type); | |
194 | goto out_err; | |
195 | } | |
196 | if (le32_to_cpu(dqhead->dqh_version) != gversions[type]) { | |
197 | mlog(ML_ERROR, "global quota file version does not match " | |
198 | "(%u != %u), type=%d\n", | |
199 | le32_to_cpu(dqhead->dqh_version), gversions[type], | |
200 | type); | |
201 | goto out_err; | |
202 | } | |
203 | ||
204 | ret = 1; | |
205 | out_err: | |
206 | brelse(bh); | |
207 | iput(ginode); | |
208 | return ret; | |
209 | } | |
210 | ||
211 | /* Release given list of quota file chunks */ | |
212 | static void ocfs2_release_local_quota_bitmaps(struct list_head *head) | |
213 | { | |
214 | struct ocfs2_quota_chunk *pos, *next; | |
215 | ||
216 | list_for_each_entry_safe(pos, next, head, qc_chunk) { | |
217 | list_del(&pos->qc_chunk); | |
218 | brelse(pos->qc_headerbh); | |
219 | kmem_cache_free(ocfs2_qf_chunk_cachep, pos); | |
220 | } | |
221 | } | |
222 | ||
223 | /* Load quota bitmaps into memory */ | |
224 | static int ocfs2_load_local_quota_bitmaps(struct inode *inode, | |
225 | struct ocfs2_local_disk_dqinfo *ldinfo, | |
226 | struct list_head *head) | |
227 | { | |
228 | struct ocfs2_quota_chunk *newchunk; | |
229 | int i, status; | |
230 | ||
231 | INIT_LIST_HEAD(head); | |
232 | for (i = 0; i < le32_to_cpu(ldinfo->dqi_chunks); i++) { | |
233 | newchunk = kmem_cache_alloc(ocfs2_qf_chunk_cachep, GFP_NOFS); | |
234 | if (!newchunk) { | |
235 | ocfs2_release_local_quota_bitmaps(head); | |
236 | return -ENOMEM; | |
237 | } | |
238 | newchunk->qc_num = i; | |
85eb8b73 JB |
239 | newchunk->qc_headerbh = NULL; |
240 | status = ocfs2_read_quota_block(inode, | |
9e33d69f | 241 | ol_quota_chunk_block(inode->i_sb, i), |
85eb8b73 JB |
242 | &newchunk->qc_headerbh); |
243 | if (status) { | |
9e33d69f JK |
244 | mlog_errno(status); |
245 | kmem_cache_free(ocfs2_qf_chunk_cachep, newchunk); | |
246 | ocfs2_release_local_quota_bitmaps(head); | |
247 | return status; | |
248 | } | |
249 | list_add_tail(&newchunk->qc_chunk, head); | |
250 | } | |
251 | return 0; | |
252 | } | |
253 | ||
254 | static void olq_update_info(struct buffer_head *bh, void *private) | |
255 | { | |
256 | struct mem_dqinfo *info = private; | |
257 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
258 | struct ocfs2_local_disk_dqinfo *ldinfo; | |
259 | ||
260 | ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + | |
261 | OCFS2_LOCAL_INFO_OFF); | |
262 | spin_lock(&dq_data_lock); | |
263 | ldinfo->dqi_flags = cpu_to_le32(info->dqi_flags & DQF_MASK); | |
264 | ldinfo->dqi_chunks = cpu_to_le32(oinfo->dqi_chunks); | |
265 | ldinfo->dqi_blocks = cpu_to_le32(oinfo->dqi_blocks); | |
266 | spin_unlock(&dq_data_lock); | |
267 | } | |
268 | ||
2205363d JK |
269 | static int ocfs2_add_recovery_chunk(struct super_block *sb, |
270 | struct ocfs2_local_disk_chunk *dchunk, | |
271 | int chunk, | |
272 | struct list_head *head) | |
273 | { | |
274 | struct ocfs2_recovery_chunk *rc; | |
275 | ||
276 | rc = kmalloc(sizeof(struct ocfs2_recovery_chunk), GFP_NOFS); | |
277 | if (!rc) | |
278 | return -ENOMEM; | |
279 | rc->rc_chunk = chunk; | |
280 | rc->rc_bitmap = kmalloc(sb->s_blocksize, GFP_NOFS); | |
281 | if (!rc->rc_bitmap) { | |
282 | kfree(rc); | |
283 | return -ENOMEM; | |
284 | } | |
285 | memcpy(rc->rc_bitmap, dchunk->dqc_bitmap, | |
286 | (ol_chunk_entries(sb) + 7) >> 3); | |
287 | list_add_tail(&rc->rc_list, head); | |
288 | return 0; | |
289 | } | |
290 | ||
291 | static void free_recovery_list(struct list_head *head) | |
292 | { | |
293 | struct ocfs2_recovery_chunk *next; | |
294 | struct ocfs2_recovery_chunk *rchunk; | |
295 | ||
296 | list_for_each_entry_safe(rchunk, next, head, rc_list) { | |
297 | list_del(&rchunk->rc_list); | |
298 | kfree(rchunk->rc_bitmap); | |
299 | kfree(rchunk); | |
300 | } | |
301 | } | |
302 | ||
303 | void ocfs2_free_quota_recovery(struct ocfs2_quota_recovery *rec) | |
304 | { | |
305 | int type; | |
306 | ||
307 | for (type = 0; type < MAXQUOTAS; type++) | |
308 | free_recovery_list(&(rec->r_list[type])); | |
309 | kfree(rec); | |
310 | } | |
311 | ||
312 | /* Load entries in our quota file we have to recover*/ | |
313 | static int ocfs2_recovery_load_quota(struct inode *lqinode, | |
314 | struct ocfs2_local_disk_dqinfo *ldinfo, | |
315 | int type, | |
316 | struct list_head *head) | |
317 | { | |
318 | struct super_block *sb = lqinode->i_sb; | |
319 | struct buffer_head *hbh; | |
320 | struct ocfs2_local_disk_chunk *dchunk; | |
321 | int i, chunks = le32_to_cpu(ldinfo->dqi_chunks); | |
322 | int status = 0; | |
323 | ||
324 | for (i = 0; i < chunks; i++) { | |
85eb8b73 JB |
325 | hbh = NULL; |
326 | status = ocfs2_read_quota_block(lqinode, | |
327 | ol_quota_chunk_block(sb, i), | |
328 | &hbh); | |
329 | if (status) { | |
2205363d JK |
330 | mlog_errno(status); |
331 | break; | |
332 | } | |
333 | dchunk = (struct ocfs2_local_disk_chunk *)hbh->b_data; | |
334 | if (le32_to_cpu(dchunk->dqc_free) < ol_chunk_entries(sb)) | |
335 | status = ocfs2_add_recovery_chunk(sb, dchunk, i, head); | |
336 | brelse(hbh); | |
337 | if (status < 0) | |
338 | break; | |
339 | } | |
340 | if (status < 0) | |
341 | free_recovery_list(head); | |
342 | return status; | |
343 | } | |
344 | ||
345 | static struct ocfs2_quota_recovery *ocfs2_alloc_quota_recovery(void) | |
346 | { | |
347 | int type; | |
348 | struct ocfs2_quota_recovery *rec; | |
349 | ||
350 | rec = kmalloc(sizeof(struct ocfs2_quota_recovery), GFP_NOFS); | |
351 | if (!rec) | |
352 | return NULL; | |
353 | for (type = 0; type < MAXQUOTAS; type++) | |
354 | INIT_LIST_HEAD(&(rec->r_list[type])); | |
355 | return rec; | |
356 | } | |
357 | ||
358 | /* Load information we need for quota recovery into memory */ | |
359 | struct ocfs2_quota_recovery *ocfs2_begin_quota_recovery( | |
360 | struct ocfs2_super *osb, | |
361 | int slot_num) | |
362 | { | |
363 | unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA, | |
364 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA}; | |
365 | unsigned int ino[MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE, | |
366 | LOCAL_GROUP_QUOTA_SYSTEM_INODE }; | |
367 | struct super_block *sb = osb->sb; | |
368 | struct ocfs2_local_disk_dqinfo *ldinfo; | |
369 | struct inode *lqinode; | |
370 | struct buffer_head *bh; | |
371 | int type; | |
372 | int status = 0; | |
373 | struct ocfs2_quota_recovery *rec; | |
374 | ||
375 | mlog(ML_NOTICE, "Beginning quota recovery in slot %u\n", slot_num); | |
376 | rec = ocfs2_alloc_quota_recovery(); | |
377 | if (!rec) | |
378 | return ERR_PTR(-ENOMEM); | |
379 | /* First init... */ | |
380 | ||
381 | for (type = 0; type < MAXQUOTAS; type++) { | |
382 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type])) | |
383 | continue; | |
384 | /* At this point, journal of the slot is already replayed so | |
385 | * we can trust metadata and data of the quota file */ | |
386 | lqinode = ocfs2_get_system_file_inode(osb, ino[type], slot_num); | |
387 | if (!lqinode) { | |
388 | status = -ENOENT; | |
389 | goto out; | |
390 | } | |
391 | status = ocfs2_inode_lock_full(lqinode, NULL, 1, | |
392 | OCFS2_META_LOCK_RECOVERY); | |
393 | if (status < 0) { | |
394 | mlog_errno(status); | |
395 | goto out_put; | |
396 | } | |
397 | /* Now read local header */ | |
85eb8b73 JB |
398 | bh = NULL; |
399 | status = ocfs2_read_quota_block(lqinode, 0, &bh); | |
400 | if (status) { | |
2205363d JK |
401 | mlog_errno(status); |
402 | mlog(ML_ERROR, "failed to read quota file info header " | |
403 | "(slot=%d type=%d)\n", slot_num, type); | |
404 | goto out_lock; | |
405 | } | |
406 | ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + | |
407 | OCFS2_LOCAL_INFO_OFF); | |
408 | status = ocfs2_recovery_load_quota(lqinode, ldinfo, type, | |
409 | &rec->r_list[type]); | |
410 | brelse(bh); | |
411 | out_lock: | |
412 | ocfs2_inode_unlock(lqinode, 1); | |
413 | out_put: | |
414 | iput(lqinode); | |
415 | if (status < 0) | |
416 | break; | |
417 | } | |
418 | out: | |
419 | if (status < 0) { | |
420 | ocfs2_free_quota_recovery(rec); | |
421 | rec = ERR_PTR(status); | |
422 | } | |
423 | return rec; | |
424 | } | |
425 | ||
426 | /* Sync changes in local quota file into global quota file and | |
427 | * reinitialize local quota file. | |
428 | * The function expects local quota file to be already locked and | |
429 | * dqonoff_mutex locked. */ | |
430 | static int ocfs2_recover_local_quota_file(struct inode *lqinode, | |
431 | int type, | |
432 | struct ocfs2_quota_recovery *rec) | |
433 | { | |
434 | struct super_block *sb = lqinode->i_sb; | |
435 | struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv; | |
436 | struct ocfs2_local_disk_chunk *dchunk; | |
437 | struct ocfs2_local_disk_dqblk *dqblk; | |
438 | struct dquot *dquot; | |
439 | handle_t *handle; | |
440 | struct buffer_head *hbh = NULL, *qbh = NULL; | |
441 | int status = 0; | |
442 | int bit, chunk; | |
443 | struct ocfs2_recovery_chunk *rchunk, *next; | |
444 | qsize_t spacechange, inodechange; | |
445 | ||
446 | mlog_entry("ino=%lu type=%u", (unsigned long)lqinode->i_ino, type); | |
447 | ||
2205363d JK |
448 | list_for_each_entry_safe(rchunk, next, &(rec->r_list[type]), rc_list) { |
449 | chunk = rchunk->rc_chunk; | |
85eb8b73 JB |
450 | hbh = NULL; |
451 | status = ocfs2_read_quota_block(lqinode, | |
452 | ol_quota_chunk_block(sb, chunk), | |
453 | &hbh); | |
454 | if (status) { | |
2205363d JK |
455 | mlog_errno(status); |
456 | break; | |
457 | } | |
458 | dchunk = (struct ocfs2_local_disk_chunk *)hbh->b_data; | |
459 | for_each_bit(bit, rchunk->rc_bitmap, ol_chunk_entries(sb)) { | |
85eb8b73 JB |
460 | qbh = NULL; |
461 | status = ocfs2_read_quota_block(lqinode, | |
2205363d | 462 | ol_dqblk_block(sb, chunk, bit), |
85eb8b73 JB |
463 | &qbh); |
464 | if (status) { | |
2205363d JK |
465 | mlog_errno(status); |
466 | break; | |
467 | } | |
468 | dqblk = (struct ocfs2_local_disk_dqblk *)(qbh->b_data + | |
469 | ol_dqblk_block_off(sb, chunk, bit)); | |
470 | dquot = dqget(sb, le64_to_cpu(dqblk->dqb_id), type); | |
471 | if (!dquot) { | |
472 | status = -EIO; | |
473 | mlog(ML_ERROR, "Failed to get quota structure " | |
474 | "for id %u, type %d. Cannot finish quota " | |
475 | "file recovery.\n", | |
476 | (unsigned)le64_to_cpu(dqblk->dqb_id), | |
477 | type); | |
478 | goto out_put_bh; | |
479 | } | |
80d73f15 JK |
480 | status = ocfs2_lock_global_qf(oinfo, 1); |
481 | if (status < 0) { | |
482 | mlog_errno(status); | |
483 | goto out_put_dquot; | |
484 | } | |
485 | ||
2205363d JK |
486 | handle = ocfs2_start_trans(OCFS2_SB(sb), |
487 | OCFS2_QSYNC_CREDITS); | |
488 | if (IS_ERR(handle)) { | |
489 | status = PTR_ERR(handle); | |
490 | mlog_errno(status); | |
80d73f15 | 491 | goto out_drop_lock; |
2205363d JK |
492 | } |
493 | mutex_lock(&sb_dqopt(sb)->dqio_mutex); | |
494 | spin_lock(&dq_data_lock); | |
495 | /* Add usage from quota entry into quota changes | |
496 | * of our node. Auxiliary variables are important | |
497 | * due to signedness */ | |
498 | spacechange = le64_to_cpu(dqblk->dqb_spacemod); | |
499 | inodechange = le64_to_cpu(dqblk->dqb_inodemod); | |
500 | dquot->dq_dqb.dqb_curspace += spacechange; | |
501 | dquot->dq_dqb.dqb_curinodes += inodechange; | |
502 | spin_unlock(&dq_data_lock); | |
503 | /* We want to drop reference held by the crashed | |
504 | * node. Since we have our own reference we know | |
505 | * global structure actually won't be freed. */ | |
506 | status = ocfs2_global_release_dquot(dquot); | |
507 | if (status < 0) { | |
508 | mlog_errno(status); | |
509 | goto out_commit; | |
510 | } | |
511 | /* Release local quota file entry */ | |
13723d00 | 512 | status = ocfs2_journal_access_dq(handle, lqinode, |
2205363d JK |
513 | qbh, OCFS2_JOURNAL_ACCESS_WRITE); |
514 | if (status < 0) { | |
515 | mlog_errno(status); | |
516 | goto out_commit; | |
517 | } | |
518 | lock_buffer(qbh); | |
519 | WARN_ON(!ocfs2_test_bit(bit, dchunk->dqc_bitmap)); | |
520 | ocfs2_clear_bit(bit, dchunk->dqc_bitmap); | |
521 | le32_add_cpu(&dchunk->dqc_free, 1); | |
522 | unlock_buffer(qbh); | |
523 | status = ocfs2_journal_dirty(handle, qbh); | |
524 | if (status < 0) | |
525 | mlog_errno(status); | |
526 | out_commit: | |
527 | mutex_unlock(&sb_dqopt(sb)->dqio_mutex); | |
528 | ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
80d73f15 JK |
529 | out_drop_lock: |
530 | ocfs2_unlock_global_qf(oinfo, 1); | |
2205363d JK |
531 | out_put_dquot: |
532 | dqput(dquot); | |
533 | out_put_bh: | |
534 | brelse(qbh); | |
535 | if (status < 0) | |
536 | break; | |
537 | } | |
538 | brelse(hbh); | |
539 | list_del(&rchunk->rc_list); | |
540 | kfree(rchunk->rc_bitmap); | |
541 | kfree(rchunk); | |
542 | if (status < 0) | |
543 | break; | |
544 | } | |
2205363d JK |
545 | if (status < 0) |
546 | free_recovery_list(&(rec->r_list[type])); | |
547 | mlog_exit(status); | |
548 | return status; | |
549 | } | |
550 | ||
551 | /* Recover local quota files for given node different from us */ | |
552 | int ocfs2_finish_quota_recovery(struct ocfs2_super *osb, | |
553 | struct ocfs2_quota_recovery *rec, | |
554 | int slot_num) | |
555 | { | |
556 | unsigned int ino[MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE, | |
557 | LOCAL_GROUP_QUOTA_SYSTEM_INODE }; | |
558 | struct super_block *sb = osb->sb; | |
559 | struct ocfs2_local_disk_dqinfo *ldinfo; | |
560 | struct buffer_head *bh; | |
561 | handle_t *handle; | |
562 | int type; | |
563 | int status = 0; | |
564 | struct inode *lqinode; | |
565 | unsigned int flags; | |
566 | ||
567 | mlog(ML_NOTICE, "Finishing quota recovery in slot %u\n", slot_num); | |
568 | mutex_lock(&sb_dqopt(sb)->dqonoff_mutex); | |
569 | for (type = 0; type < MAXQUOTAS; type++) { | |
570 | if (list_empty(&(rec->r_list[type]))) | |
571 | continue; | |
572 | mlog(0, "Recovering quota in slot %d\n", slot_num); | |
573 | lqinode = ocfs2_get_system_file_inode(osb, ino[type], slot_num); | |
574 | if (!lqinode) { | |
575 | status = -ENOENT; | |
576 | goto out; | |
577 | } | |
578 | status = ocfs2_inode_lock_full(lqinode, NULL, 1, | |
579 | OCFS2_META_LOCK_NOQUEUE); | |
580 | /* Someone else is holding the lock? Then he must be | |
581 | * doing the recovery. Just skip the file... */ | |
582 | if (status == -EAGAIN) { | |
583 | mlog(ML_NOTICE, "skipping quota recovery for slot %d " | |
584 | "because quota file is locked.\n", slot_num); | |
585 | status = 0; | |
586 | goto out_put; | |
587 | } else if (status < 0) { | |
588 | mlog_errno(status); | |
589 | goto out_put; | |
590 | } | |
591 | /* Now read local header */ | |
85eb8b73 JB |
592 | bh = NULL; |
593 | status = ocfs2_read_quota_block(lqinode, 0, &bh); | |
594 | if (status) { | |
2205363d JK |
595 | mlog_errno(status); |
596 | mlog(ML_ERROR, "failed to read quota file info header " | |
597 | "(slot=%d type=%d)\n", slot_num, type); | |
598 | goto out_lock; | |
599 | } | |
600 | ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + | |
601 | OCFS2_LOCAL_INFO_OFF); | |
602 | /* Is recovery still needed? */ | |
603 | flags = le32_to_cpu(ldinfo->dqi_flags); | |
604 | if (!(flags & OLQF_CLEAN)) | |
605 | status = ocfs2_recover_local_quota_file(lqinode, | |
606 | type, | |
607 | rec); | |
608 | /* We don't want to mark file as clean when it is actually | |
609 | * active */ | |
610 | if (slot_num == osb->slot_num) | |
611 | goto out_bh; | |
612 | /* Mark quota file as clean if we are recovering quota file of | |
613 | * some other node. */ | |
614 | handle = ocfs2_start_trans(osb, 1); | |
615 | if (IS_ERR(handle)) { | |
616 | status = PTR_ERR(handle); | |
617 | mlog_errno(status); | |
618 | goto out_bh; | |
619 | } | |
13723d00 JB |
620 | status = ocfs2_journal_access_dq(handle, lqinode, bh, |
621 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2205363d JK |
622 | if (status < 0) { |
623 | mlog_errno(status); | |
624 | goto out_trans; | |
625 | } | |
626 | lock_buffer(bh); | |
627 | ldinfo->dqi_flags = cpu_to_le32(flags | OLQF_CLEAN); | |
628 | unlock_buffer(bh); | |
629 | status = ocfs2_journal_dirty(handle, bh); | |
630 | if (status < 0) | |
631 | mlog_errno(status); | |
632 | out_trans: | |
633 | ocfs2_commit_trans(osb, handle); | |
634 | out_bh: | |
635 | brelse(bh); | |
636 | out_lock: | |
637 | ocfs2_inode_unlock(lqinode, 1); | |
638 | out_put: | |
639 | iput(lqinode); | |
640 | if (status < 0) | |
641 | break; | |
642 | } | |
643 | out: | |
644 | mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex); | |
645 | kfree(rec); | |
646 | return status; | |
647 | } | |
648 | ||
9e33d69f JK |
649 | /* Read information header from quota file */ |
650 | static int ocfs2_local_read_info(struct super_block *sb, int type) | |
651 | { | |
652 | struct ocfs2_local_disk_dqinfo *ldinfo; | |
653 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
654 | struct ocfs2_mem_dqinfo *oinfo; | |
655 | struct inode *lqinode = sb_dqopt(sb)->files[type]; | |
656 | int status; | |
657 | struct buffer_head *bh = NULL; | |
2205363d | 658 | struct ocfs2_quota_recovery *rec; |
9e33d69f JK |
659 | int locked = 0; |
660 | ||
b4c30de3 JK |
661 | /* We don't need the lock and we have to acquire quota file locks |
662 | * which will later depend on this lock */ | |
663 | mutex_unlock(&sb_dqopt(sb)->dqio_mutex); | |
9e33d69f JK |
664 | info->dqi_maxblimit = 0x7fffffffffffffffLL; |
665 | info->dqi_maxilimit = 0x7fffffffffffffffLL; | |
666 | oinfo = kmalloc(sizeof(struct ocfs2_mem_dqinfo), GFP_NOFS); | |
667 | if (!oinfo) { | |
668 | mlog(ML_ERROR, "failed to allocate memory for ocfs2 quota" | |
669 | " info."); | |
670 | goto out_err; | |
671 | } | |
672 | info->dqi_priv = oinfo; | |
673 | oinfo->dqi_type = type; | |
674 | INIT_LIST_HEAD(&oinfo->dqi_chunk); | |
2205363d | 675 | oinfo->dqi_rec = NULL; |
9e33d69f JK |
676 | oinfo->dqi_lqi_bh = NULL; |
677 | oinfo->dqi_ibh = NULL; | |
678 | ||
679 | status = ocfs2_global_read_info(sb, type); | |
680 | if (status < 0) | |
681 | goto out_err; | |
682 | ||
683 | status = ocfs2_inode_lock(lqinode, &oinfo->dqi_lqi_bh, 1); | |
684 | if (status < 0) { | |
685 | mlog_errno(status); | |
686 | goto out_err; | |
687 | } | |
688 | locked = 1; | |
689 | ||
690 | /* Now read local header */ | |
85eb8b73 JB |
691 | status = ocfs2_read_quota_block(lqinode, 0, &bh); |
692 | if (status) { | |
9e33d69f JK |
693 | mlog_errno(status); |
694 | mlog(ML_ERROR, "failed to read quota file info header " | |
695 | "(type=%d)\n", type); | |
696 | goto out_err; | |
697 | } | |
698 | ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + | |
699 | OCFS2_LOCAL_INFO_OFF); | |
700 | info->dqi_flags = le32_to_cpu(ldinfo->dqi_flags); | |
701 | oinfo->dqi_chunks = le32_to_cpu(ldinfo->dqi_chunks); | |
702 | oinfo->dqi_blocks = le32_to_cpu(ldinfo->dqi_blocks); | |
703 | oinfo->dqi_ibh = bh; | |
704 | ||
705 | /* We crashed when using local quota file? */ | |
2205363d JK |
706 | if (!(info->dqi_flags & OLQF_CLEAN)) { |
707 | rec = OCFS2_SB(sb)->quota_rec; | |
708 | if (!rec) { | |
709 | rec = ocfs2_alloc_quota_recovery(); | |
710 | if (!rec) { | |
711 | status = -ENOMEM; | |
712 | mlog_errno(status); | |
713 | goto out_err; | |
714 | } | |
715 | OCFS2_SB(sb)->quota_rec = rec; | |
716 | } | |
9e33d69f | 717 | |
2205363d JK |
718 | status = ocfs2_recovery_load_quota(lqinode, ldinfo, type, |
719 | &rec->r_list[type]); | |
720 | if (status < 0) { | |
721 | mlog_errno(status); | |
722 | goto out_err; | |
723 | } | |
724 | } | |
725 | ||
726 | status = ocfs2_load_local_quota_bitmaps(lqinode, | |
9e33d69f JK |
727 | ldinfo, |
728 | &oinfo->dqi_chunk); | |
729 | if (status < 0) { | |
730 | mlog_errno(status); | |
731 | goto out_err; | |
732 | } | |
733 | ||
734 | /* Now mark quota file as used */ | |
735 | info->dqi_flags &= ~OLQF_CLEAN; | |
736 | status = ocfs2_modify_bh(lqinode, bh, olq_update_info, info); | |
737 | if (status < 0) { | |
738 | mlog_errno(status); | |
739 | goto out_err; | |
740 | } | |
741 | ||
b4c30de3 | 742 | mutex_lock(&sb_dqopt(sb)->dqio_mutex); |
9e33d69f JK |
743 | return 0; |
744 | out_err: | |
745 | if (oinfo) { | |
746 | iput(oinfo->dqi_gqinode); | |
747 | ocfs2_simple_drop_lockres(OCFS2_SB(sb), &oinfo->dqi_gqlock); | |
748 | ocfs2_lock_res_free(&oinfo->dqi_gqlock); | |
749 | brelse(oinfo->dqi_lqi_bh); | |
750 | if (locked) | |
751 | ocfs2_inode_unlock(lqinode, 1); | |
752 | ocfs2_release_local_quota_bitmaps(&oinfo->dqi_chunk); | |
753 | kfree(oinfo); | |
754 | } | |
755 | brelse(bh); | |
b4c30de3 | 756 | mutex_lock(&sb_dqopt(sb)->dqio_mutex); |
9e33d69f JK |
757 | return -1; |
758 | } | |
759 | ||
760 | /* Write local info to quota file */ | |
761 | static int ocfs2_local_write_info(struct super_block *sb, int type) | |
762 | { | |
763 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
764 | struct buffer_head *bh = ((struct ocfs2_mem_dqinfo *)info->dqi_priv) | |
765 | ->dqi_ibh; | |
766 | int status; | |
767 | ||
768 | status = ocfs2_modify_bh(sb_dqopt(sb)->files[type], bh, olq_update_info, | |
769 | info); | |
770 | if (status < 0) { | |
771 | mlog_errno(status); | |
772 | return -1; | |
773 | } | |
774 | ||
775 | return 0; | |
776 | } | |
777 | ||
778 | /* Release info from memory */ | |
779 | static int ocfs2_local_free_info(struct super_block *sb, int type) | |
780 | { | |
781 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
782 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
783 | struct ocfs2_quota_chunk *chunk; | |
784 | struct ocfs2_local_disk_chunk *dchunk; | |
785 | int mark_clean = 1, len; | |
786 | int status; | |
787 | ||
171bf93c MF |
788 | /* At this point we know there are no more dquots and thus |
789 | * even if there's some sync in the pdflush queue, it won't | |
790 | * find any dquots and return without doing anything */ | |
791 | cancel_delayed_work_sync(&oinfo->dqi_sync_work); | |
9e33d69f JK |
792 | iput(oinfo->dqi_gqinode); |
793 | ocfs2_simple_drop_lockres(OCFS2_SB(sb), &oinfo->dqi_gqlock); | |
794 | ocfs2_lock_res_free(&oinfo->dqi_gqlock); | |
795 | list_for_each_entry(chunk, &oinfo->dqi_chunk, qc_chunk) { | |
796 | dchunk = (struct ocfs2_local_disk_chunk *) | |
797 | (chunk->qc_headerbh->b_data); | |
798 | if (chunk->qc_num < oinfo->dqi_chunks - 1) { | |
799 | len = ol_chunk_entries(sb); | |
800 | } else { | |
801 | len = (oinfo->dqi_blocks - | |
802 | ol_quota_chunk_block(sb, chunk->qc_num) - 1) | |
803 | * ol_quota_entries_per_block(sb); | |
804 | } | |
805 | /* Not all entries free? Bug! */ | |
806 | if (le32_to_cpu(dchunk->dqc_free) != len) { | |
807 | mlog(ML_ERROR, "releasing quota file with used " | |
808 | "entries (type=%d)\n", type); | |
809 | mark_clean = 0; | |
810 | } | |
811 | } | |
812 | ocfs2_release_local_quota_bitmaps(&oinfo->dqi_chunk); | |
813 | ||
2205363d JK |
814 | /* dqonoff_mutex protects us against racing with recovery thread... */ |
815 | if (oinfo->dqi_rec) { | |
816 | ocfs2_free_quota_recovery(oinfo->dqi_rec); | |
817 | mark_clean = 0; | |
818 | } | |
819 | ||
9e33d69f JK |
820 | if (!mark_clean) |
821 | goto out; | |
822 | ||
823 | /* Mark local file as clean */ | |
824 | info->dqi_flags |= OLQF_CLEAN; | |
825 | status = ocfs2_modify_bh(sb_dqopt(sb)->files[type], | |
826 | oinfo->dqi_ibh, | |
827 | olq_update_info, | |
828 | info); | |
829 | if (status < 0) { | |
830 | mlog_errno(status); | |
831 | goto out; | |
832 | } | |
833 | ||
834 | out: | |
835 | ocfs2_inode_unlock(sb_dqopt(sb)->files[type], 1); | |
836 | brelse(oinfo->dqi_ibh); | |
837 | brelse(oinfo->dqi_lqi_bh); | |
838 | kfree(oinfo); | |
839 | return 0; | |
840 | } | |
841 | ||
842 | static void olq_set_dquot(struct buffer_head *bh, void *private) | |
843 | { | |
844 | struct ocfs2_dquot *od = private; | |
845 | struct ocfs2_local_disk_dqblk *dqblk; | |
846 | struct super_block *sb = od->dq_dquot.dq_sb; | |
847 | ||
848 | dqblk = (struct ocfs2_local_disk_dqblk *)(bh->b_data | |
849 | + ol_dqblk_block_offset(sb, od->dq_local_off)); | |
850 | ||
851 | dqblk->dqb_id = cpu_to_le64(od->dq_dquot.dq_id); | |
852 | spin_lock(&dq_data_lock); | |
853 | dqblk->dqb_spacemod = cpu_to_le64(od->dq_dquot.dq_dqb.dqb_curspace - | |
854 | od->dq_origspace); | |
855 | dqblk->dqb_inodemod = cpu_to_le64(od->dq_dquot.dq_dqb.dqb_curinodes - | |
856 | od->dq_originodes); | |
857 | spin_unlock(&dq_data_lock); | |
858 | mlog(0, "Writing local dquot %u space %lld inodes %lld\n", | |
9a2f3866 JK |
859 | od->dq_dquot.dq_id, (long long)le64_to_cpu(dqblk->dqb_spacemod), |
860 | (long long)le64_to_cpu(dqblk->dqb_inodemod)); | |
9e33d69f JK |
861 | } |
862 | ||
863 | /* Write dquot to local quota file */ | |
864 | static int ocfs2_local_write_dquot(struct dquot *dquot) | |
865 | { | |
866 | struct super_block *sb = dquot->dq_sb; | |
867 | struct ocfs2_dquot *od = OCFS2_DQUOT(dquot); | |
85eb8b73 | 868 | struct buffer_head *bh = NULL; |
9e33d69f JK |
869 | int status; |
870 | ||
85eb8b73 | 871 | status = ocfs2_read_quota_block(sb_dqopt(sb)->files[dquot->dq_type], |
9e33d69f | 872 | ol_dqblk_file_block(sb, od->dq_local_off), |
85eb8b73 JB |
873 | &bh); |
874 | if (status) { | |
9e33d69f JK |
875 | mlog_errno(status); |
876 | goto out; | |
877 | } | |
878 | status = ocfs2_modify_bh(sb_dqopt(sb)->files[dquot->dq_type], bh, | |
879 | olq_set_dquot, od); | |
880 | if (status < 0) { | |
881 | mlog_errno(status); | |
882 | goto out; | |
883 | } | |
884 | out: | |
885 | brelse(bh); | |
886 | return status; | |
887 | } | |
888 | ||
889 | /* Find free entry in local quota file */ | |
890 | static struct ocfs2_quota_chunk *ocfs2_find_free_entry(struct super_block *sb, | |
891 | int type, | |
892 | int *offset) | |
893 | { | |
894 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
895 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
896 | struct ocfs2_quota_chunk *chunk; | |
897 | struct ocfs2_local_disk_chunk *dchunk; | |
898 | int found = 0, len; | |
899 | ||
900 | list_for_each_entry(chunk, &oinfo->dqi_chunk, qc_chunk) { | |
901 | dchunk = (struct ocfs2_local_disk_chunk *) | |
902 | chunk->qc_headerbh->b_data; | |
903 | if (le32_to_cpu(dchunk->dqc_free) > 0) { | |
904 | found = 1; | |
905 | break; | |
906 | } | |
907 | } | |
908 | if (!found) | |
909 | return NULL; | |
910 | ||
911 | if (chunk->qc_num < oinfo->dqi_chunks - 1) { | |
912 | len = ol_chunk_entries(sb); | |
913 | } else { | |
914 | len = (oinfo->dqi_blocks - | |
915 | ol_quota_chunk_block(sb, chunk->qc_num) - 1) | |
916 | * ol_quota_entries_per_block(sb); | |
917 | } | |
918 | ||
919 | found = ocfs2_find_next_zero_bit(dchunk->dqc_bitmap, len, 0); | |
920 | /* We failed? */ | |
921 | if (found == len) { | |
922 | mlog(ML_ERROR, "Did not find empty entry in chunk %d with %u" | |
923 | " entries free (type=%d)\n", chunk->qc_num, | |
924 | le32_to_cpu(dchunk->dqc_free), type); | |
925 | return ERR_PTR(-EIO); | |
926 | } | |
927 | *offset = found; | |
928 | return chunk; | |
929 | } | |
930 | ||
931 | /* Add new chunk to the local quota file */ | |
932 | static struct ocfs2_quota_chunk *ocfs2_local_quota_add_chunk( | |
933 | struct super_block *sb, | |
934 | int type, | |
935 | int *offset) | |
936 | { | |
937 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
938 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
939 | struct inode *lqinode = sb_dqopt(sb)->files[type]; | |
940 | struct ocfs2_quota_chunk *chunk = NULL; | |
941 | struct ocfs2_local_disk_chunk *dchunk; | |
942 | int status; | |
943 | handle_t *handle; | |
944 | struct buffer_head *bh = NULL; | |
945 | u64 p_blkno; | |
946 | ||
947 | /* We are protected by dqio_sem so no locking needed */ | |
948 | status = ocfs2_extend_no_holes(lqinode, | |
949 | lqinode->i_size + 2 * sb->s_blocksize, | |
950 | lqinode->i_size); | |
951 | if (status < 0) { | |
952 | mlog_errno(status); | |
953 | goto out; | |
954 | } | |
955 | status = ocfs2_simple_size_update(lqinode, oinfo->dqi_lqi_bh, | |
956 | lqinode->i_size + 2 * sb->s_blocksize); | |
957 | if (status < 0) { | |
958 | mlog_errno(status); | |
959 | goto out; | |
960 | } | |
961 | ||
962 | chunk = kmem_cache_alloc(ocfs2_qf_chunk_cachep, GFP_NOFS); | |
963 | if (!chunk) { | |
964 | status = -ENOMEM; | |
965 | mlog_errno(status); | |
966 | goto out; | |
967 | } | |
968 | ||
969 | down_read(&OCFS2_I(lqinode)->ip_alloc_sem); | |
970 | status = ocfs2_extent_map_get_blocks(lqinode, oinfo->dqi_blocks, | |
971 | &p_blkno, NULL, NULL); | |
972 | up_read(&OCFS2_I(lqinode)->ip_alloc_sem); | |
973 | if (status < 0) { | |
974 | mlog_errno(status); | |
975 | goto out; | |
976 | } | |
977 | bh = sb_getblk(sb, p_blkno); | |
978 | if (!bh) { | |
979 | status = -ENOMEM; | |
980 | mlog_errno(status); | |
981 | goto out; | |
982 | } | |
4b3fa190 JK |
983 | ocfs2_set_new_buffer_uptodate(lqinode, bh); |
984 | ||
9e33d69f JK |
985 | dchunk = (struct ocfs2_local_disk_chunk *)bh->b_data; |
986 | ||
987 | handle = ocfs2_start_trans(OCFS2_SB(sb), 2); | |
988 | if (IS_ERR(handle)) { | |
989 | status = PTR_ERR(handle); | |
990 | mlog_errno(status); | |
991 | goto out; | |
992 | } | |
993 | ||
13723d00 JB |
994 | status = ocfs2_journal_access_dq(handle, lqinode, bh, |
995 | OCFS2_JOURNAL_ACCESS_WRITE); | |
9e33d69f JK |
996 | if (status < 0) { |
997 | mlog_errno(status); | |
998 | goto out_trans; | |
999 | } | |
1000 | lock_buffer(bh); | |
df32b334 | 1001 | dchunk->dqc_free = cpu_to_le32(ol_quota_entries_per_block(sb)); |
9e33d69f JK |
1002 | memset(dchunk->dqc_bitmap, 0, |
1003 | sb->s_blocksize - sizeof(struct ocfs2_local_disk_chunk) - | |
1004 | OCFS2_QBLK_RESERVED_SPACE); | |
9e33d69f JK |
1005 | unlock_buffer(bh); |
1006 | status = ocfs2_journal_dirty(handle, bh); | |
1007 | if (status < 0) { | |
1008 | mlog_errno(status); | |
1009 | goto out_trans; | |
1010 | } | |
1011 | ||
1012 | oinfo->dqi_blocks += 2; | |
1013 | oinfo->dqi_chunks++; | |
1014 | status = ocfs2_local_write_info(sb, type); | |
1015 | if (status < 0) { | |
1016 | mlog_errno(status); | |
1017 | goto out_trans; | |
1018 | } | |
1019 | status = ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1020 | if (status < 0) { | |
1021 | mlog_errno(status); | |
1022 | goto out; | |
1023 | } | |
1024 | ||
1025 | list_add_tail(&chunk->qc_chunk, &oinfo->dqi_chunk); | |
1026 | chunk->qc_num = list_entry(chunk->qc_chunk.prev, | |
1027 | struct ocfs2_quota_chunk, | |
1028 | qc_chunk)->qc_num + 1; | |
1029 | chunk->qc_headerbh = bh; | |
1030 | *offset = 0; | |
1031 | return chunk; | |
1032 | out_trans: | |
1033 | ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1034 | out: | |
1035 | brelse(bh); | |
1036 | kmem_cache_free(ocfs2_qf_chunk_cachep, chunk); | |
1037 | return ERR_PTR(status); | |
1038 | } | |
1039 | ||
1040 | /* Find free entry in local quota file */ | |
1041 | static struct ocfs2_quota_chunk *ocfs2_extend_local_quota_file( | |
1042 | struct super_block *sb, | |
1043 | int type, | |
1044 | int *offset) | |
1045 | { | |
1046 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
1047 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
1048 | struct ocfs2_quota_chunk *chunk; | |
1049 | struct inode *lqinode = sb_dqopt(sb)->files[type]; | |
1050 | struct ocfs2_local_disk_chunk *dchunk; | |
1051 | int epb = ol_quota_entries_per_block(sb); | |
1052 | unsigned int chunk_blocks; | |
1053 | int status; | |
1054 | handle_t *handle; | |
1055 | ||
1056 | if (list_empty(&oinfo->dqi_chunk)) | |
1057 | return ocfs2_local_quota_add_chunk(sb, type, offset); | |
1058 | /* Is the last chunk full? */ | |
1059 | chunk = list_entry(oinfo->dqi_chunk.prev, | |
1060 | struct ocfs2_quota_chunk, qc_chunk); | |
1061 | chunk_blocks = oinfo->dqi_blocks - | |
1062 | ol_quota_chunk_block(sb, chunk->qc_num) - 1; | |
1063 | if (ol_chunk_blocks(sb) == chunk_blocks) | |
1064 | return ocfs2_local_quota_add_chunk(sb, type, offset); | |
1065 | ||
1066 | /* We are protected by dqio_sem so no locking needed */ | |
1067 | status = ocfs2_extend_no_holes(lqinode, | |
1068 | lqinode->i_size + sb->s_blocksize, | |
1069 | lqinode->i_size); | |
1070 | if (status < 0) { | |
1071 | mlog_errno(status); | |
1072 | goto out; | |
1073 | } | |
1074 | status = ocfs2_simple_size_update(lqinode, oinfo->dqi_lqi_bh, | |
1075 | lqinode->i_size + sb->s_blocksize); | |
1076 | if (status < 0) { | |
1077 | mlog_errno(status); | |
1078 | goto out; | |
1079 | } | |
1080 | handle = ocfs2_start_trans(OCFS2_SB(sb), 2); | |
1081 | if (IS_ERR(handle)) { | |
1082 | status = PTR_ERR(handle); | |
1083 | mlog_errno(status); | |
1084 | goto out; | |
1085 | } | |
13723d00 | 1086 | status = ocfs2_journal_access_dq(handle, lqinode, chunk->qc_headerbh, |
9e33d69f JK |
1087 | OCFS2_JOURNAL_ACCESS_WRITE); |
1088 | if (status < 0) { | |
1089 | mlog_errno(status); | |
1090 | goto out_trans; | |
1091 | } | |
1092 | ||
1093 | dchunk = (struct ocfs2_local_disk_chunk *)chunk->qc_headerbh->b_data; | |
1094 | lock_buffer(chunk->qc_headerbh); | |
1095 | le32_add_cpu(&dchunk->dqc_free, ol_quota_entries_per_block(sb)); | |
1096 | unlock_buffer(chunk->qc_headerbh); | |
1097 | status = ocfs2_journal_dirty(handle, chunk->qc_headerbh); | |
1098 | if (status < 0) { | |
1099 | mlog_errno(status); | |
1100 | goto out_trans; | |
1101 | } | |
1102 | oinfo->dqi_blocks++; | |
1103 | status = ocfs2_local_write_info(sb, type); | |
1104 | if (status < 0) { | |
1105 | mlog_errno(status); | |
1106 | goto out_trans; | |
1107 | } | |
1108 | ||
1109 | status = ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1110 | if (status < 0) { | |
1111 | mlog_errno(status); | |
1112 | goto out; | |
1113 | } | |
1114 | *offset = chunk_blocks * epb; | |
1115 | return chunk; | |
1116 | out_trans: | |
1117 | ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1118 | out: | |
1119 | return ERR_PTR(status); | |
1120 | } | |
1121 | ||
df32b334 | 1122 | static void olq_alloc_dquot(struct buffer_head *bh, void *private) |
9e33d69f JK |
1123 | { |
1124 | int *offset = private; | |
1125 | struct ocfs2_local_disk_chunk *dchunk; | |
1126 | ||
1127 | dchunk = (struct ocfs2_local_disk_chunk *)bh->b_data; | |
1128 | ocfs2_set_bit(*offset, dchunk->dqc_bitmap); | |
1129 | le32_add_cpu(&dchunk->dqc_free, -1); | |
1130 | } | |
1131 | ||
1132 | /* Create dquot in the local file for given id */ | |
1133 | static int ocfs2_create_local_dquot(struct dquot *dquot) | |
1134 | { | |
1135 | struct super_block *sb = dquot->dq_sb; | |
1136 | int type = dquot->dq_type; | |
1137 | struct inode *lqinode = sb_dqopt(sb)->files[type]; | |
1138 | struct ocfs2_quota_chunk *chunk; | |
1139 | struct ocfs2_dquot *od = OCFS2_DQUOT(dquot); | |
1140 | int offset; | |
1141 | int status; | |
1142 | ||
1143 | chunk = ocfs2_find_free_entry(sb, type, &offset); | |
1144 | if (!chunk) { | |
1145 | chunk = ocfs2_extend_local_quota_file(sb, type, &offset); | |
1146 | if (IS_ERR(chunk)) | |
1147 | return PTR_ERR(chunk); | |
1148 | } else if (IS_ERR(chunk)) { | |
1149 | return PTR_ERR(chunk); | |
1150 | } | |
1151 | od->dq_local_off = ol_dqblk_off(sb, chunk->qc_num, offset); | |
1152 | od->dq_chunk = chunk; | |
1153 | ||
1154 | /* Initialize dquot structure on disk */ | |
1155 | status = ocfs2_local_write_dquot(dquot); | |
1156 | if (status < 0) { | |
1157 | mlog_errno(status); | |
1158 | goto out; | |
1159 | } | |
1160 | ||
1161 | /* Mark structure as allocated */ | |
1162 | status = ocfs2_modify_bh(lqinode, chunk->qc_headerbh, olq_alloc_dquot, | |
1163 | &offset); | |
1164 | if (status < 0) { | |
1165 | mlog_errno(status); | |
1166 | goto out; | |
1167 | } | |
1168 | out: | |
1169 | return status; | |
1170 | } | |
1171 | ||
1172 | /* Create entry in local file for dquot, load data from the global file */ | |
1173 | static int ocfs2_local_read_dquot(struct dquot *dquot) | |
1174 | { | |
1175 | int status; | |
1176 | ||
1177 | mlog_entry("id=%u, type=%d\n", dquot->dq_id, dquot->dq_type); | |
1178 | ||
1179 | status = ocfs2_global_read_dquot(dquot); | |
1180 | if (status < 0) { | |
1181 | mlog_errno(status); | |
1182 | goto out_err; | |
1183 | } | |
1184 | ||
1185 | /* Now create entry in the local quota file */ | |
1186 | status = ocfs2_create_local_dquot(dquot); | |
1187 | if (status < 0) { | |
1188 | mlog_errno(status); | |
1189 | goto out_err; | |
1190 | } | |
1191 | mlog_exit(0); | |
1192 | return 0; | |
1193 | out_err: | |
1194 | mlog_exit(status); | |
1195 | return status; | |
1196 | } | |
1197 | ||
1198 | /* Release dquot structure from local quota file. ocfs2_release_dquot() has | |
1199 | * already started a transaction and obtained exclusive lock for global | |
1200 | * quota file. */ | |
1201 | static int ocfs2_local_release_dquot(struct dquot *dquot) | |
1202 | { | |
1203 | int status; | |
1204 | int type = dquot->dq_type; | |
1205 | struct ocfs2_dquot *od = OCFS2_DQUOT(dquot); | |
1206 | struct super_block *sb = dquot->dq_sb; | |
1207 | struct ocfs2_local_disk_chunk *dchunk; | |
1208 | int offset; | |
1209 | handle_t *handle = journal_current_handle(); | |
1210 | ||
1211 | BUG_ON(!handle); | |
1212 | /* First write all local changes to global file */ | |
1213 | status = ocfs2_global_release_dquot(dquot); | |
1214 | if (status < 0) { | |
1215 | mlog_errno(status); | |
1216 | goto out; | |
1217 | } | |
1218 | ||
13723d00 | 1219 | status = ocfs2_journal_access_dq(handle, sb_dqopt(sb)->files[type], |
9e33d69f JK |
1220 | od->dq_chunk->qc_headerbh, OCFS2_JOURNAL_ACCESS_WRITE); |
1221 | if (status < 0) { | |
1222 | mlog_errno(status); | |
1223 | goto out; | |
1224 | } | |
1225 | offset = ol_dqblk_chunk_off(sb, od->dq_chunk->qc_num, | |
1226 | od->dq_local_off); | |
1227 | dchunk = (struct ocfs2_local_disk_chunk *) | |
1228 | (od->dq_chunk->qc_headerbh->b_data); | |
1229 | /* Mark structure as freed */ | |
1230 | lock_buffer(od->dq_chunk->qc_headerbh); | |
1231 | ocfs2_clear_bit(offset, dchunk->dqc_bitmap); | |
1232 | le32_add_cpu(&dchunk->dqc_free, 1); | |
1233 | unlock_buffer(od->dq_chunk->qc_headerbh); | |
1234 | status = ocfs2_journal_dirty(handle, od->dq_chunk->qc_headerbh); | |
1235 | if (status < 0) { | |
1236 | mlog_errno(status); | |
1237 | goto out; | |
1238 | } | |
1239 | status = 0; | |
1240 | out: | |
1241 | /* Clear the read bit so that next time someone uses this | |
1242 | * dquot he reads fresh info from disk and allocates local | |
1243 | * dquot structure */ | |
1244 | clear_bit(DQ_READ_B, &dquot->dq_flags); | |
1245 | return status; | |
1246 | } | |
1247 | ||
1248 | static struct quota_format_ops ocfs2_format_ops = { | |
1249 | .check_quota_file = ocfs2_local_check_quota_file, | |
1250 | .read_file_info = ocfs2_local_read_info, | |
1251 | .write_file_info = ocfs2_global_write_info, | |
1252 | .free_file_info = ocfs2_local_free_info, | |
1253 | .read_dqblk = ocfs2_local_read_dquot, | |
1254 | .commit_dqblk = ocfs2_local_write_dquot, | |
1255 | .release_dqblk = ocfs2_local_release_dquot, | |
1256 | }; | |
1257 | ||
1258 | struct quota_format_type ocfs2_quota_format = { | |
1259 | .qf_fmt_id = QFMT_OCFS2, | |
1260 | .qf_ops = &ocfs2_format_ops, | |
1261 | .qf_owner = THIS_MODULE | |
1262 | }; |