Commit | Line | Data |
---|---|---|
9e33d69f JK |
1 | /* |
2 | * Implementation of operations over local quota file | |
3 | */ | |
4 | ||
5 | #include <linux/fs.h> | |
5a0e3ad6 | 6 | #include <linux/slab.h> |
9e33d69f JK |
7 | #include <linux/quota.h> |
8 | #include <linux/quotaops.h> | |
9 | #include <linux/module.h> | |
10 | ||
9e33d69f JK |
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" |
fb8dd8d7 | 24 | #include "super.h" |
38877a43 | 25 | #include "ocfs2_trace.h" |
9e33d69f JK |
26 | |
27 | /* Number of local quota structures per block */ | |
28 | static inline unsigned int ol_quota_entries_per_block(struct super_block *sb) | |
29 | { | |
30 | return ((sb->s_blocksize - OCFS2_QBLK_RESERVED_SPACE) / | |
31 | sizeof(struct ocfs2_local_disk_dqblk)); | |
32 | } | |
33 | ||
34 | /* Number of blocks with entries in one chunk */ | |
35 | static inline unsigned int ol_chunk_blocks(struct super_block *sb) | |
36 | { | |
37 | return ((sb->s_blocksize - sizeof(struct ocfs2_local_disk_chunk) - | |
38 | OCFS2_QBLK_RESERVED_SPACE) << 3) / | |
39 | ol_quota_entries_per_block(sb); | |
40 | } | |
41 | ||
42 | /* Number of entries in a chunk bitmap */ | |
43 | static unsigned int ol_chunk_entries(struct super_block *sb) | |
44 | { | |
45 | return ol_chunk_blocks(sb) * ol_quota_entries_per_block(sb); | |
46 | } | |
47 | ||
48 | /* Offset of the chunk in quota file */ | |
49 | static unsigned int ol_quota_chunk_block(struct super_block *sb, int c) | |
50 | { | |
51 | /* 1 block for local quota file info, 1 block per chunk for chunk info */ | |
52 | return 1 + (ol_chunk_blocks(sb) + 1) * c; | |
53 | } | |
54 | ||
2205363d JK |
55 | static unsigned int ol_dqblk_block(struct super_block *sb, int c, int off) |
56 | { | |
57 | int epb = ol_quota_entries_per_block(sb); | |
58 | ||
59 | return ol_quota_chunk_block(sb, c) + 1 + off / epb; | |
60 | } | |
61 | ||
62 | static unsigned int ol_dqblk_block_off(struct super_block *sb, int c, int off) | |
9e33d69f JK |
63 | { |
64 | int epb = ol_quota_entries_per_block(sb); | |
65 | ||
2205363d JK |
66 | return (off % epb) * sizeof(struct ocfs2_local_disk_dqblk); |
67 | } | |
68 | ||
69 | /* Offset of the dquot structure in the quota file */ | |
70 | static loff_t ol_dqblk_off(struct super_block *sb, int c, int off) | |
71 | { | |
72 | return (ol_dqblk_block(sb, c, off) << sb->s_blocksize_bits) + | |
73 | ol_dqblk_block_off(sb, c, off); | |
9e33d69f JK |
74 | } |
75 | ||
76 | /* Compute block number from given offset */ | |
77 | static inline unsigned int ol_dqblk_file_block(struct super_block *sb, loff_t off) | |
78 | { | |
79 | return off >> sb->s_blocksize_bits; | |
80 | } | |
81 | ||
82 | static inline unsigned int ol_dqblk_block_offset(struct super_block *sb, loff_t off) | |
83 | { | |
84 | return off & ((1 << sb->s_blocksize_bits) - 1); | |
85 | } | |
86 | ||
87 | /* Compute offset in the chunk of a structure with the given offset */ | |
88 | static int ol_dqblk_chunk_off(struct super_block *sb, int c, loff_t off) | |
89 | { | |
90 | int epb = ol_quota_entries_per_block(sb); | |
91 | ||
92 | return ((off >> sb->s_blocksize_bits) - | |
93 | ol_quota_chunk_block(sb, c) - 1) * epb | |
94 | + ((unsigned int)(off & ((1 << sb->s_blocksize_bits) - 1))) / | |
95 | sizeof(struct ocfs2_local_disk_dqblk); | |
96 | } | |
97 | ||
98 | /* Write bufferhead into the fs */ | |
99 | static int ocfs2_modify_bh(struct inode *inode, struct buffer_head *bh, | |
100 | void (*modify)(struct buffer_head *, void *), void *private) | |
101 | { | |
102 | struct super_block *sb = inode->i_sb; | |
103 | handle_t *handle; | |
104 | int status; | |
105 | ||
0584974a JK |
106 | handle = ocfs2_start_trans(OCFS2_SB(sb), |
107 | OCFS2_QUOTA_BLOCK_UPDATE_CREDITS); | |
9e33d69f JK |
108 | if (IS_ERR(handle)) { |
109 | status = PTR_ERR(handle); | |
110 | mlog_errno(status); | |
111 | return status; | |
112 | } | |
0cf2f763 | 113 | status = ocfs2_journal_access_dq(handle, INODE_CACHE(inode), bh, |
13723d00 | 114 | OCFS2_JOURNAL_ACCESS_WRITE); |
9e33d69f JK |
115 | if (status < 0) { |
116 | mlog_errno(status); | |
117 | ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
118 | return status; | |
119 | } | |
120 | lock_buffer(bh); | |
121 | modify(bh, private); | |
122 | unlock_buffer(bh); | |
ec20cec7 JB |
123 | ocfs2_journal_dirty(handle, bh); |
124 | ||
9e33d69f JK |
125 | status = ocfs2_commit_trans(OCFS2_SB(sb), handle); |
126 | if (status < 0) { | |
127 | mlog_errno(status); | |
128 | return status; | |
129 | } | |
130 | return 0; | |
131 | } | |
132 | ||
fb8dd8d7 JK |
133 | /* |
134 | * Read quota block from a given logical offset. | |
135 | * | |
136 | * This function acquires ip_alloc_sem and thus it must not be called with a | |
137 | * transaction started. | |
138 | */ | |
139 | static int ocfs2_read_quota_block(struct inode *inode, u64 v_block, | |
140 | struct buffer_head **bh) | |
141 | { | |
142 | int rc = 0; | |
143 | struct buffer_head *tmp = *bh; | |
144 | ||
145 | if (i_size_read(inode) >> inode->i_sb->s_blocksize_bits <= v_block) { | |
146 | ocfs2_error(inode->i_sb, | |
147 | "Quota file %llu is probably corrupted! Requested " | |
148 | "to read block %Lu but file has size only %Lu\n", | |
149 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
150 | (unsigned long long)v_block, | |
151 | (unsigned long long)i_size_read(inode)); | |
152 | return -EIO; | |
153 | } | |
154 | rc = ocfs2_read_virt_blocks(inode, v_block, 1, &tmp, 0, | |
155 | ocfs2_validate_quota_block); | |
156 | if (rc) | |
157 | mlog_errno(rc); | |
158 | ||
159 | /* If ocfs2_read_virt_blocks() got us a new bh, pass it up. */ | |
160 | if (!rc && !*bh) | |
161 | *bh = tmp; | |
162 | ||
163 | return rc; | |
164 | } | |
165 | ||
9e33d69f JK |
166 | /* Check whether we understand format of quota files */ |
167 | static int ocfs2_local_check_quota_file(struct super_block *sb, int type) | |
168 | { | |
52362810 JK |
169 | unsigned int lmagics[OCFS2_MAXQUOTAS] = OCFS2_LOCAL_QMAGICS; |
170 | unsigned int lversions[OCFS2_MAXQUOTAS] = OCFS2_LOCAL_QVERSIONS; | |
171 | unsigned int gmagics[OCFS2_MAXQUOTAS] = OCFS2_GLOBAL_QMAGICS; | |
172 | unsigned int gversions[OCFS2_MAXQUOTAS] = OCFS2_GLOBAL_QVERSIONS; | |
173 | unsigned int ino[OCFS2_MAXQUOTAS] = { USER_QUOTA_SYSTEM_INODE, | |
174 | GROUP_QUOTA_SYSTEM_INODE }; | |
85eb8b73 | 175 | struct buffer_head *bh = NULL; |
9e33d69f JK |
176 | struct inode *linode = sb_dqopt(sb)->files[type]; |
177 | struct inode *ginode = NULL; | |
178 | struct ocfs2_disk_dqheader *dqhead; | |
179 | int status, ret = 0; | |
180 | ||
181 | /* First check whether we understand local quota file */ | |
85eb8b73 JB |
182 | status = ocfs2_read_quota_block(linode, 0, &bh); |
183 | if (status) { | |
9e33d69f JK |
184 | mlog_errno(status); |
185 | mlog(ML_ERROR, "failed to read quota file header (type=%d)\n", | |
186 | type); | |
187 | goto out_err; | |
188 | } | |
189 | dqhead = (struct ocfs2_disk_dqheader *)(bh->b_data); | |
190 | if (le32_to_cpu(dqhead->dqh_magic) != lmagics[type]) { | |
191 | mlog(ML_ERROR, "quota file magic does not match (%u != %u)," | |
192 | " type=%d\n", le32_to_cpu(dqhead->dqh_magic), | |
193 | lmagics[type], type); | |
194 | goto out_err; | |
195 | } | |
196 | if (le32_to_cpu(dqhead->dqh_version) != lversions[type]) { | |
197 | mlog(ML_ERROR, "quota file version does not match (%u != %u)," | |
198 | " type=%d\n", le32_to_cpu(dqhead->dqh_version), | |
199 | lversions[type], type); | |
200 | goto out_err; | |
201 | } | |
202 | brelse(bh); | |
203 | bh = NULL; | |
204 | ||
205 | /* Next check whether we understand global quota file */ | |
206 | ginode = ocfs2_get_system_file_inode(OCFS2_SB(sb), ino[type], | |
207 | OCFS2_INVALID_SLOT); | |
208 | if (!ginode) { | |
209 | mlog(ML_ERROR, "cannot get global quota file inode " | |
210 | "(type=%d)\n", type); | |
211 | goto out_err; | |
212 | } | |
213 | /* Since the header is read only, we don't care about locking */ | |
85eb8b73 JB |
214 | status = ocfs2_read_quota_block(ginode, 0, &bh); |
215 | if (status) { | |
9e33d69f JK |
216 | mlog_errno(status); |
217 | mlog(ML_ERROR, "failed to read global quota file header " | |
218 | "(type=%d)\n", type); | |
219 | goto out_err; | |
220 | } | |
221 | dqhead = (struct ocfs2_disk_dqheader *)(bh->b_data); | |
222 | if (le32_to_cpu(dqhead->dqh_magic) != gmagics[type]) { | |
223 | mlog(ML_ERROR, "global quota file magic does not match " | |
224 | "(%u != %u), type=%d\n", | |
225 | le32_to_cpu(dqhead->dqh_magic), gmagics[type], type); | |
226 | goto out_err; | |
227 | } | |
228 | if (le32_to_cpu(dqhead->dqh_version) != gversions[type]) { | |
229 | mlog(ML_ERROR, "global quota file version does not match " | |
230 | "(%u != %u), type=%d\n", | |
231 | le32_to_cpu(dqhead->dqh_version), gversions[type], | |
232 | type); | |
233 | goto out_err; | |
234 | } | |
235 | ||
236 | ret = 1; | |
237 | out_err: | |
238 | brelse(bh); | |
239 | iput(ginode); | |
240 | return ret; | |
241 | } | |
242 | ||
243 | /* Release given list of quota file chunks */ | |
244 | static void ocfs2_release_local_quota_bitmaps(struct list_head *head) | |
245 | { | |
246 | struct ocfs2_quota_chunk *pos, *next; | |
247 | ||
248 | list_for_each_entry_safe(pos, next, head, qc_chunk) { | |
249 | list_del(&pos->qc_chunk); | |
250 | brelse(pos->qc_headerbh); | |
251 | kmem_cache_free(ocfs2_qf_chunk_cachep, pos); | |
252 | } | |
253 | } | |
254 | ||
255 | /* Load quota bitmaps into memory */ | |
256 | static int ocfs2_load_local_quota_bitmaps(struct inode *inode, | |
257 | struct ocfs2_local_disk_dqinfo *ldinfo, | |
258 | struct list_head *head) | |
259 | { | |
260 | struct ocfs2_quota_chunk *newchunk; | |
261 | int i, status; | |
262 | ||
263 | INIT_LIST_HEAD(head); | |
264 | for (i = 0; i < le32_to_cpu(ldinfo->dqi_chunks); i++) { | |
265 | newchunk = kmem_cache_alloc(ocfs2_qf_chunk_cachep, GFP_NOFS); | |
266 | if (!newchunk) { | |
267 | ocfs2_release_local_quota_bitmaps(head); | |
268 | return -ENOMEM; | |
269 | } | |
270 | newchunk->qc_num = i; | |
85eb8b73 JB |
271 | newchunk->qc_headerbh = NULL; |
272 | status = ocfs2_read_quota_block(inode, | |
9e33d69f | 273 | ol_quota_chunk_block(inode->i_sb, i), |
85eb8b73 JB |
274 | &newchunk->qc_headerbh); |
275 | if (status) { | |
9e33d69f JK |
276 | mlog_errno(status); |
277 | kmem_cache_free(ocfs2_qf_chunk_cachep, newchunk); | |
278 | ocfs2_release_local_quota_bitmaps(head); | |
279 | return status; | |
280 | } | |
281 | list_add_tail(&newchunk->qc_chunk, head); | |
282 | } | |
283 | return 0; | |
284 | } | |
285 | ||
286 | static void olq_update_info(struct buffer_head *bh, void *private) | |
287 | { | |
288 | struct mem_dqinfo *info = private; | |
289 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
290 | struct ocfs2_local_disk_dqinfo *ldinfo; | |
291 | ||
292 | ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + | |
293 | OCFS2_LOCAL_INFO_OFF); | |
294 | spin_lock(&dq_data_lock); | |
96827adc | 295 | ldinfo->dqi_flags = cpu_to_le32(oinfo->dqi_flags); |
9e33d69f JK |
296 | ldinfo->dqi_chunks = cpu_to_le32(oinfo->dqi_chunks); |
297 | ldinfo->dqi_blocks = cpu_to_le32(oinfo->dqi_blocks); | |
298 | spin_unlock(&dq_data_lock); | |
299 | } | |
300 | ||
2205363d JK |
301 | static int ocfs2_add_recovery_chunk(struct super_block *sb, |
302 | struct ocfs2_local_disk_chunk *dchunk, | |
303 | int chunk, | |
304 | struct list_head *head) | |
305 | { | |
306 | struct ocfs2_recovery_chunk *rc; | |
307 | ||
308 | rc = kmalloc(sizeof(struct ocfs2_recovery_chunk), GFP_NOFS); | |
309 | if (!rc) | |
310 | return -ENOMEM; | |
311 | rc->rc_chunk = chunk; | |
312 | rc->rc_bitmap = kmalloc(sb->s_blocksize, GFP_NOFS); | |
313 | if (!rc->rc_bitmap) { | |
314 | kfree(rc); | |
315 | return -ENOMEM; | |
316 | } | |
317 | memcpy(rc->rc_bitmap, dchunk->dqc_bitmap, | |
318 | (ol_chunk_entries(sb) + 7) >> 3); | |
319 | list_add_tail(&rc->rc_list, head); | |
320 | return 0; | |
321 | } | |
322 | ||
323 | static void free_recovery_list(struct list_head *head) | |
324 | { | |
325 | struct ocfs2_recovery_chunk *next; | |
326 | struct ocfs2_recovery_chunk *rchunk; | |
327 | ||
328 | list_for_each_entry_safe(rchunk, next, head, rc_list) { | |
329 | list_del(&rchunk->rc_list); | |
330 | kfree(rchunk->rc_bitmap); | |
331 | kfree(rchunk); | |
332 | } | |
333 | } | |
334 | ||
335 | void ocfs2_free_quota_recovery(struct ocfs2_quota_recovery *rec) | |
336 | { | |
337 | int type; | |
338 | ||
52362810 | 339 | for (type = 0; type < OCFS2_MAXQUOTAS; type++) |
2205363d JK |
340 | free_recovery_list(&(rec->r_list[type])); |
341 | kfree(rec); | |
342 | } | |
343 | ||
344 | /* Load entries in our quota file we have to recover*/ | |
345 | static int ocfs2_recovery_load_quota(struct inode *lqinode, | |
346 | struct ocfs2_local_disk_dqinfo *ldinfo, | |
347 | int type, | |
348 | struct list_head *head) | |
349 | { | |
350 | struct super_block *sb = lqinode->i_sb; | |
351 | struct buffer_head *hbh; | |
352 | struct ocfs2_local_disk_chunk *dchunk; | |
353 | int i, chunks = le32_to_cpu(ldinfo->dqi_chunks); | |
354 | int status = 0; | |
355 | ||
356 | for (i = 0; i < chunks; i++) { | |
85eb8b73 JB |
357 | hbh = NULL; |
358 | status = ocfs2_read_quota_block(lqinode, | |
359 | ol_quota_chunk_block(sb, i), | |
360 | &hbh); | |
361 | if (status) { | |
2205363d JK |
362 | mlog_errno(status); |
363 | break; | |
364 | } | |
365 | dchunk = (struct ocfs2_local_disk_chunk *)hbh->b_data; | |
366 | if (le32_to_cpu(dchunk->dqc_free) < ol_chunk_entries(sb)) | |
367 | status = ocfs2_add_recovery_chunk(sb, dchunk, i, head); | |
368 | brelse(hbh); | |
369 | if (status < 0) | |
370 | break; | |
371 | } | |
372 | if (status < 0) | |
373 | free_recovery_list(head); | |
374 | return status; | |
375 | } | |
376 | ||
377 | static struct ocfs2_quota_recovery *ocfs2_alloc_quota_recovery(void) | |
378 | { | |
379 | int type; | |
380 | struct ocfs2_quota_recovery *rec; | |
381 | ||
382 | rec = kmalloc(sizeof(struct ocfs2_quota_recovery), GFP_NOFS); | |
383 | if (!rec) | |
384 | return NULL; | |
52362810 | 385 | for (type = 0; type < OCFS2_MAXQUOTAS; type++) |
2205363d JK |
386 | INIT_LIST_HEAD(&(rec->r_list[type])); |
387 | return rec; | |
388 | } | |
389 | ||
390 | /* Load information we need for quota recovery into memory */ | |
391 | struct ocfs2_quota_recovery *ocfs2_begin_quota_recovery( | |
392 | struct ocfs2_super *osb, | |
393 | int slot_num) | |
394 | { | |
52362810 JK |
395 | unsigned int feature[OCFS2_MAXQUOTAS] = { |
396 | OCFS2_FEATURE_RO_COMPAT_USRQUOTA, | |
397 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA}; | |
398 | unsigned int ino[OCFS2_MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE, | |
399 | LOCAL_GROUP_QUOTA_SYSTEM_INODE }; | |
2205363d JK |
400 | struct super_block *sb = osb->sb; |
401 | struct ocfs2_local_disk_dqinfo *ldinfo; | |
402 | struct inode *lqinode; | |
403 | struct buffer_head *bh; | |
404 | int type; | |
405 | int status = 0; | |
406 | struct ocfs2_quota_recovery *rec; | |
407 | ||
619c200d SM |
408 | printk(KERN_NOTICE "ocfs2: Beginning quota recovery on device (%s) for " |
409 | "slot %u\n", osb->dev_str, slot_num); | |
410 | ||
2205363d JK |
411 | rec = ocfs2_alloc_quota_recovery(); |
412 | if (!rec) | |
413 | return ERR_PTR(-ENOMEM); | |
414 | /* First init... */ | |
415 | ||
52362810 | 416 | for (type = 0; type < OCFS2_MAXQUOTAS; type++) { |
2205363d JK |
417 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type])) |
418 | continue; | |
419 | /* At this point, journal of the slot is already replayed so | |
420 | * we can trust metadata and data of the quota file */ | |
421 | lqinode = ocfs2_get_system_file_inode(osb, ino[type], slot_num); | |
422 | if (!lqinode) { | |
423 | status = -ENOENT; | |
424 | goto out; | |
425 | } | |
426 | status = ocfs2_inode_lock_full(lqinode, NULL, 1, | |
427 | OCFS2_META_LOCK_RECOVERY); | |
428 | if (status < 0) { | |
429 | mlog_errno(status); | |
430 | goto out_put; | |
431 | } | |
432 | /* Now read local header */ | |
85eb8b73 JB |
433 | bh = NULL; |
434 | status = ocfs2_read_quota_block(lqinode, 0, &bh); | |
435 | if (status) { | |
2205363d JK |
436 | mlog_errno(status); |
437 | mlog(ML_ERROR, "failed to read quota file info header " | |
438 | "(slot=%d type=%d)\n", slot_num, type); | |
439 | goto out_lock; | |
440 | } | |
441 | ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + | |
442 | OCFS2_LOCAL_INFO_OFF); | |
443 | status = ocfs2_recovery_load_quota(lqinode, ldinfo, type, | |
444 | &rec->r_list[type]); | |
445 | brelse(bh); | |
446 | out_lock: | |
447 | ocfs2_inode_unlock(lqinode, 1); | |
448 | out_put: | |
449 | iput(lqinode); | |
450 | if (status < 0) | |
451 | break; | |
452 | } | |
453 | out: | |
454 | if (status < 0) { | |
455 | ocfs2_free_quota_recovery(rec); | |
456 | rec = ERR_PTR(status); | |
457 | } | |
458 | return rec; | |
459 | } | |
460 | ||
461 | /* Sync changes in local quota file into global quota file and | |
462 | * reinitialize local quota file. | |
463 | * The function expects local quota file to be already locked and | |
464 | * dqonoff_mutex locked. */ | |
465 | static int ocfs2_recover_local_quota_file(struct inode *lqinode, | |
466 | int type, | |
467 | struct ocfs2_quota_recovery *rec) | |
468 | { | |
469 | struct super_block *sb = lqinode->i_sb; | |
470 | struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv; | |
471 | struct ocfs2_local_disk_chunk *dchunk; | |
472 | struct ocfs2_local_disk_dqblk *dqblk; | |
473 | struct dquot *dquot; | |
474 | handle_t *handle; | |
475 | struct buffer_head *hbh = NULL, *qbh = NULL; | |
476 | int status = 0; | |
477 | int bit, chunk; | |
478 | struct ocfs2_recovery_chunk *rchunk, *next; | |
479 | qsize_t spacechange, inodechange; | |
480 | ||
38877a43 | 481 | trace_ocfs2_recover_local_quota_file((unsigned long)lqinode->i_ino, type); |
2205363d | 482 | |
2205363d JK |
483 | list_for_each_entry_safe(rchunk, next, &(rec->r_list[type]), rc_list) { |
484 | chunk = rchunk->rc_chunk; | |
85eb8b73 JB |
485 | hbh = NULL; |
486 | status = ocfs2_read_quota_block(lqinode, | |
487 | ol_quota_chunk_block(sb, chunk), | |
488 | &hbh); | |
489 | if (status) { | |
2205363d JK |
490 | mlog_errno(status); |
491 | break; | |
492 | } | |
493 | dchunk = (struct ocfs2_local_disk_chunk *)hbh->b_data; | |
984b3f57 | 494 | for_each_set_bit(bit, rchunk->rc_bitmap, ol_chunk_entries(sb)) { |
85eb8b73 JB |
495 | qbh = NULL; |
496 | status = ocfs2_read_quota_block(lqinode, | |
2205363d | 497 | ol_dqblk_block(sb, chunk, bit), |
85eb8b73 JB |
498 | &qbh); |
499 | if (status) { | |
2205363d JK |
500 | mlog_errno(status); |
501 | break; | |
502 | } | |
503 | dqblk = (struct ocfs2_local_disk_dqblk *)(qbh->b_data + | |
504 | ol_dqblk_block_off(sb, chunk, bit)); | |
aca645a6 EB |
505 | dquot = dqget(sb, |
506 | make_kqid(&init_user_ns, type, | |
507 | le64_to_cpu(dqblk->dqb_id))); | |
2205363d JK |
508 | if (!dquot) { |
509 | status = -EIO; | |
510 | mlog(ML_ERROR, "Failed to get quota structure " | |
511 | "for id %u, type %d. Cannot finish quota " | |
512 | "file recovery.\n", | |
513 | (unsigned)le64_to_cpu(dqblk->dqb_id), | |
514 | type); | |
515 | goto out_put_bh; | |
516 | } | |
80d73f15 JK |
517 | status = ocfs2_lock_global_qf(oinfo, 1); |
518 | if (status < 0) { | |
519 | mlog_errno(status); | |
520 | goto out_put_dquot; | |
521 | } | |
522 | ||
2205363d JK |
523 | handle = ocfs2_start_trans(OCFS2_SB(sb), |
524 | OCFS2_QSYNC_CREDITS); | |
525 | if (IS_ERR(handle)) { | |
526 | status = PTR_ERR(handle); | |
527 | mlog_errno(status); | |
80d73f15 | 528 | goto out_drop_lock; |
2205363d JK |
529 | } |
530 | mutex_lock(&sb_dqopt(sb)->dqio_mutex); | |
531 | spin_lock(&dq_data_lock); | |
532 | /* Add usage from quota entry into quota changes | |
533 | * of our node. Auxiliary variables are important | |
534 | * due to signedness */ | |
535 | spacechange = le64_to_cpu(dqblk->dqb_spacemod); | |
536 | inodechange = le64_to_cpu(dqblk->dqb_inodemod); | |
537 | dquot->dq_dqb.dqb_curspace += spacechange; | |
538 | dquot->dq_dqb.dqb_curinodes += inodechange; | |
539 | spin_unlock(&dq_data_lock); | |
540 | /* We want to drop reference held by the crashed | |
541 | * node. Since we have our own reference we know | |
542 | * global structure actually won't be freed. */ | |
543 | status = ocfs2_global_release_dquot(dquot); | |
544 | if (status < 0) { | |
545 | mlog_errno(status); | |
546 | goto out_commit; | |
547 | } | |
548 | /* Release local quota file entry */ | |
0cf2f763 JB |
549 | status = ocfs2_journal_access_dq(handle, |
550 | INODE_CACHE(lqinode), | |
2205363d JK |
551 | qbh, OCFS2_JOURNAL_ACCESS_WRITE); |
552 | if (status < 0) { | |
553 | mlog_errno(status); | |
554 | goto out_commit; | |
555 | } | |
556 | lock_buffer(qbh); | |
93925579 AM |
557 | WARN_ON(!ocfs2_test_bit_unaligned(bit, dchunk->dqc_bitmap)); |
558 | ocfs2_clear_bit_unaligned(bit, dchunk->dqc_bitmap); | |
2205363d JK |
559 | le32_add_cpu(&dchunk->dqc_free, 1); |
560 | unlock_buffer(qbh); | |
ec20cec7 | 561 | ocfs2_journal_dirty(handle, qbh); |
2205363d JK |
562 | out_commit: |
563 | mutex_unlock(&sb_dqopt(sb)->dqio_mutex); | |
564 | ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
80d73f15 JK |
565 | out_drop_lock: |
566 | ocfs2_unlock_global_qf(oinfo, 1); | |
2205363d JK |
567 | out_put_dquot: |
568 | dqput(dquot); | |
569 | out_put_bh: | |
570 | brelse(qbh); | |
571 | if (status < 0) | |
572 | break; | |
573 | } | |
574 | brelse(hbh); | |
575 | list_del(&rchunk->rc_list); | |
576 | kfree(rchunk->rc_bitmap); | |
577 | kfree(rchunk); | |
578 | if (status < 0) | |
579 | break; | |
580 | } | |
2205363d JK |
581 | if (status < 0) |
582 | free_recovery_list(&(rec->r_list[type])); | |
c1e8d35e TM |
583 | if (status) |
584 | mlog_errno(status); | |
2205363d JK |
585 | return status; |
586 | } | |
587 | ||
588 | /* Recover local quota files for given node different from us */ | |
589 | int ocfs2_finish_quota_recovery(struct ocfs2_super *osb, | |
590 | struct ocfs2_quota_recovery *rec, | |
591 | int slot_num) | |
592 | { | |
52362810 JK |
593 | unsigned int ino[OCFS2_MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE, |
594 | LOCAL_GROUP_QUOTA_SYSTEM_INODE }; | |
2205363d JK |
595 | struct super_block *sb = osb->sb; |
596 | struct ocfs2_local_disk_dqinfo *ldinfo; | |
597 | struct buffer_head *bh; | |
598 | handle_t *handle; | |
599 | int type; | |
600 | int status = 0; | |
601 | struct inode *lqinode; | |
602 | unsigned int flags; | |
603 | ||
619c200d SM |
604 | printk(KERN_NOTICE "ocfs2: Finishing quota recovery on device (%s) for " |
605 | "slot %u\n", osb->dev_str, slot_num); | |
606 | ||
2205363d | 607 | mutex_lock(&sb_dqopt(sb)->dqonoff_mutex); |
52362810 | 608 | for (type = 0; type < OCFS2_MAXQUOTAS; type++) { |
2205363d JK |
609 | if (list_empty(&(rec->r_list[type]))) |
610 | continue; | |
38877a43 | 611 | trace_ocfs2_finish_quota_recovery(slot_num); |
2205363d JK |
612 | lqinode = ocfs2_get_system_file_inode(osb, ino[type], slot_num); |
613 | if (!lqinode) { | |
614 | status = -ENOENT; | |
615 | goto out; | |
616 | } | |
617 | status = ocfs2_inode_lock_full(lqinode, NULL, 1, | |
618 | OCFS2_META_LOCK_NOQUEUE); | |
619 | /* Someone else is holding the lock? Then he must be | |
620 | * doing the recovery. Just skip the file... */ | |
621 | if (status == -EAGAIN) { | |
619c200d SM |
622 | printk(KERN_NOTICE "ocfs2: Skipping quota recovery on " |
623 | "device (%s) for slot %d because quota file is " | |
624 | "locked.\n", osb->dev_str, slot_num); | |
2205363d JK |
625 | status = 0; |
626 | goto out_put; | |
627 | } else if (status < 0) { | |
628 | mlog_errno(status); | |
629 | goto out_put; | |
630 | } | |
631 | /* Now read local header */ | |
85eb8b73 JB |
632 | bh = NULL; |
633 | status = ocfs2_read_quota_block(lqinode, 0, &bh); | |
634 | if (status) { | |
2205363d JK |
635 | mlog_errno(status); |
636 | mlog(ML_ERROR, "failed to read quota file info header " | |
637 | "(slot=%d type=%d)\n", slot_num, type); | |
638 | goto out_lock; | |
639 | } | |
640 | ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + | |
641 | OCFS2_LOCAL_INFO_OFF); | |
642 | /* Is recovery still needed? */ | |
643 | flags = le32_to_cpu(ldinfo->dqi_flags); | |
644 | if (!(flags & OLQF_CLEAN)) | |
645 | status = ocfs2_recover_local_quota_file(lqinode, | |
646 | type, | |
647 | rec); | |
648 | /* We don't want to mark file as clean when it is actually | |
649 | * active */ | |
650 | if (slot_num == osb->slot_num) | |
651 | goto out_bh; | |
652 | /* Mark quota file as clean if we are recovering quota file of | |
653 | * some other node. */ | |
0584974a JK |
654 | handle = ocfs2_start_trans(osb, |
655 | OCFS2_LOCAL_QINFO_WRITE_CREDITS); | |
2205363d JK |
656 | if (IS_ERR(handle)) { |
657 | status = PTR_ERR(handle); | |
658 | mlog_errno(status); | |
659 | goto out_bh; | |
660 | } | |
0cf2f763 JB |
661 | status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), |
662 | bh, | |
13723d00 | 663 | OCFS2_JOURNAL_ACCESS_WRITE); |
2205363d JK |
664 | if (status < 0) { |
665 | mlog_errno(status); | |
666 | goto out_trans; | |
667 | } | |
668 | lock_buffer(bh); | |
669 | ldinfo->dqi_flags = cpu_to_le32(flags | OLQF_CLEAN); | |
670 | unlock_buffer(bh); | |
ec20cec7 | 671 | ocfs2_journal_dirty(handle, bh); |
2205363d JK |
672 | out_trans: |
673 | ocfs2_commit_trans(osb, handle); | |
674 | out_bh: | |
675 | brelse(bh); | |
676 | out_lock: | |
677 | ocfs2_inode_unlock(lqinode, 1); | |
678 | out_put: | |
679 | iput(lqinode); | |
680 | if (status < 0) | |
681 | break; | |
682 | } | |
683 | out: | |
684 | mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex); | |
685 | kfree(rec); | |
686 | return status; | |
687 | } | |
688 | ||
9e33d69f JK |
689 | /* Read information header from quota file */ |
690 | static int ocfs2_local_read_info(struct super_block *sb, int type) | |
691 | { | |
692 | struct ocfs2_local_disk_dqinfo *ldinfo; | |
693 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
694 | struct ocfs2_mem_dqinfo *oinfo; | |
695 | struct inode *lqinode = sb_dqopt(sb)->files[type]; | |
696 | int status; | |
697 | struct buffer_head *bh = NULL; | |
2205363d | 698 | struct ocfs2_quota_recovery *rec; |
9e33d69f JK |
699 | int locked = 0; |
700 | ||
b4c30de3 JK |
701 | /* We don't need the lock and we have to acquire quota file locks |
702 | * which will later depend on this lock */ | |
703 | mutex_unlock(&sb_dqopt(sb)->dqio_mutex); | |
9e33d69f JK |
704 | info->dqi_maxblimit = 0x7fffffffffffffffLL; |
705 | info->dqi_maxilimit = 0x7fffffffffffffffLL; | |
706 | oinfo = kmalloc(sizeof(struct ocfs2_mem_dqinfo), GFP_NOFS); | |
707 | if (!oinfo) { | |
708 | mlog(ML_ERROR, "failed to allocate memory for ocfs2 quota" | |
709 | " info."); | |
710 | goto out_err; | |
711 | } | |
712 | info->dqi_priv = oinfo; | |
713 | oinfo->dqi_type = type; | |
714 | INIT_LIST_HEAD(&oinfo->dqi_chunk); | |
2205363d | 715 | oinfo->dqi_rec = NULL; |
9e33d69f | 716 | oinfo->dqi_lqi_bh = NULL; |
ae4f6ef1 | 717 | oinfo->dqi_libh = NULL; |
9e33d69f JK |
718 | |
719 | status = ocfs2_global_read_info(sb, type); | |
720 | if (status < 0) | |
721 | goto out_err; | |
722 | ||
723 | status = ocfs2_inode_lock(lqinode, &oinfo->dqi_lqi_bh, 1); | |
724 | if (status < 0) { | |
725 | mlog_errno(status); | |
726 | goto out_err; | |
727 | } | |
728 | locked = 1; | |
729 | ||
730 | /* Now read local header */ | |
85eb8b73 JB |
731 | status = ocfs2_read_quota_block(lqinode, 0, &bh); |
732 | if (status) { | |
9e33d69f JK |
733 | mlog_errno(status); |
734 | mlog(ML_ERROR, "failed to read quota file info header " | |
735 | "(type=%d)\n", type); | |
736 | goto out_err; | |
737 | } | |
738 | ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + | |
739 | OCFS2_LOCAL_INFO_OFF); | |
96827adc | 740 | oinfo->dqi_flags = le32_to_cpu(ldinfo->dqi_flags); |
9e33d69f JK |
741 | oinfo->dqi_chunks = le32_to_cpu(ldinfo->dqi_chunks); |
742 | oinfo->dqi_blocks = le32_to_cpu(ldinfo->dqi_blocks); | |
ae4f6ef1 | 743 | oinfo->dqi_libh = bh; |
9e33d69f JK |
744 | |
745 | /* We crashed when using local quota file? */ | |
96827adc | 746 | if (!(oinfo->dqi_flags & OLQF_CLEAN)) { |
2205363d JK |
747 | rec = OCFS2_SB(sb)->quota_rec; |
748 | if (!rec) { | |
749 | rec = ocfs2_alloc_quota_recovery(); | |
750 | if (!rec) { | |
751 | status = -ENOMEM; | |
752 | mlog_errno(status); | |
753 | goto out_err; | |
754 | } | |
755 | OCFS2_SB(sb)->quota_rec = rec; | |
756 | } | |
9e33d69f | 757 | |
2205363d JK |
758 | status = ocfs2_recovery_load_quota(lqinode, ldinfo, type, |
759 | &rec->r_list[type]); | |
760 | if (status < 0) { | |
761 | mlog_errno(status); | |
762 | goto out_err; | |
763 | } | |
764 | } | |
765 | ||
766 | status = ocfs2_load_local_quota_bitmaps(lqinode, | |
9e33d69f JK |
767 | ldinfo, |
768 | &oinfo->dqi_chunk); | |
769 | if (status < 0) { | |
770 | mlog_errno(status); | |
771 | goto out_err; | |
772 | } | |
773 | ||
774 | /* Now mark quota file as used */ | |
96827adc | 775 | oinfo->dqi_flags &= ~OLQF_CLEAN; |
9e33d69f JK |
776 | status = ocfs2_modify_bh(lqinode, bh, olq_update_info, info); |
777 | if (status < 0) { | |
778 | mlog_errno(status); | |
779 | goto out_err; | |
780 | } | |
781 | ||
b4c30de3 | 782 | mutex_lock(&sb_dqopt(sb)->dqio_mutex); |
9e33d69f JK |
783 | return 0; |
784 | out_err: | |
785 | if (oinfo) { | |
786 | iput(oinfo->dqi_gqinode); | |
787 | ocfs2_simple_drop_lockres(OCFS2_SB(sb), &oinfo->dqi_gqlock); | |
788 | ocfs2_lock_res_free(&oinfo->dqi_gqlock); | |
789 | brelse(oinfo->dqi_lqi_bh); | |
790 | if (locked) | |
791 | ocfs2_inode_unlock(lqinode, 1); | |
792 | ocfs2_release_local_quota_bitmaps(&oinfo->dqi_chunk); | |
793 | kfree(oinfo); | |
794 | } | |
795 | brelse(bh); | |
b4c30de3 | 796 | mutex_lock(&sb_dqopt(sb)->dqio_mutex); |
9e33d69f JK |
797 | return -1; |
798 | } | |
799 | ||
800 | /* Write local info to quota file */ | |
801 | static int ocfs2_local_write_info(struct super_block *sb, int type) | |
802 | { | |
803 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
804 | struct buffer_head *bh = ((struct ocfs2_mem_dqinfo *)info->dqi_priv) | |
ae4f6ef1 | 805 | ->dqi_libh; |
9e33d69f JK |
806 | int status; |
807 | ||
808 | status = ocfs2_modify_bh(sb_dqopt(sb)->files[type], bh, olq_update_info, | |
809 | info); | |
810 | if (status < 0) { | |
811 | mlog_errno(status); | |
812 | return -1; | |
813 | } | |
814 | ||
815 | return 0; | |
816 | } | |
817 | ||
818 | /* Release info from memory */ | |
819 | static int ocfs2_local_free_info(struct super_block *sb, int type) | |
820 | { | |
821 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
822 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
823 | struct ocfs2_quota_chunk *chunk; | |
824 | struct ocfs2_local_disk_chunk *dchunk; | |
825 | int mark_clean = 1, len; | |
826 | int status; | |
827 | ||
828 | iput(oinfo->dqi_gqinode); | |
829 | ocfs2_simple_drop_lockres(OCFS2_SB(sb), &oinfo->dqi_gqlock); | |
830 | ocfs2_lock_res_free(&oinfo->dqi_gqlock); | |
831 | list_for_each_entry(chunk, &oinfo->dqi_chunk, qc_chunk) { | |
832 | dchunk = (struct ocfs2_local_disk_chunk *) | |
833 | (chunk->qc_headerbh->b_data); | |
834 | if (chunk->qc_num < oinfo->dqi_chunks - 1) { | |
835 | len = ol_chunk_entries(sb); | |
836 | } else { | |
837 | len = (oinfo->dqi_blocks - | |
838 | ol_quota_chunk_block(sb, chunk->qc_num) - 1) | |
839 | * ol_quota_entries_per_block(sb); | |
840 | } | |
841 | /* Not all entries free? Bug! */ | |
842 | if (le32_to_cpu(dchunk->dqc_free) != len) { | |
843 | mlog(ML_ERROR, "releasing quota file with used " | |
844 | "entries (type=%d)\n", type); | |
845 | mark_clean = 0; | |
846 | } | |
847 | } | |
848 | ocfs2_release_local_quota_bitmaps(&oinfo->dqi_chunk); | |
849 | ||
2205363d JK |
850 | /* dqonoff_mutex protects us against racing with recovery thread... */ |
851 | if (oinfo->dqi_rec) { | |
852 | ocfs2_free_quota_recovery(oinfo->dqi_rec); | |
853 | mark_clean = 0; | |
854 | } | |
855 | ||
9e33d69f JK |
856 | if (!mark_clean) |
857 | goto out; | |
858 | ||
859 | /* Mark local file as clean */ | |
96827adc | 860 | oinfo->dqi_flags |= OLQF_CLEAN; |
9e33d69f | 861 | status = ocfs2_modify_bh(sb_dqopt(sb)->files[type], |
ae4f6ef1 | 862 | oinfo->dqi_libh, |
9e33d69f JK |
863 | olq_update_info, |
864 | info); | |
865 | if (status < 0) { | |
866 | mlog_errno(status); | |
867 | goto out; | |
868 | } | |
869 | ||
870 | out: | |
871 | ocfs2_inode_unlock(sb_dqopt(sb)->files[type], 1); | |
ae4f6ef1 | 872 | brelse(oinfo->dqi_libh); |
9e33d69f JK |
873 | brelse(oinfo->dqi_lqi_bh); |
874 | kfree(oinfo); | |
875 | return 0; | |
876 | } | |
877 | ||
878 | static void olq_set_dquot(struct buffer_head *bh, void *private) | |
879 | { | |
880 | struct ocfs2_dquot *od = private; | |
881 | struct ocfs2_local_disk_dqblk *dqblk; | |
882 | struct super_block *sb = od->dq_dquot.dq_sb; | |
883 | ||
884 | dqblk = (struct ocfs2_local_disk_dqblk *)(bh->b_data | |
885 | + ol_dqblk_block_offset(sb, od->dq_local_off)); | |
886 | ||
4c376dca EB |
887 | dqblk->dqb_id = cpu_to_le64(from_kqid(&init_user_ns, |
888 | od->dq_dquot.dq_id)); | |
9e33d69f JK |
889 | spin_lock(&dq_data_lock); |
890 | dqblk->dqb_spacemod = cpu_to_le64(od->dq_dquot.dq_dqb.dqb_curspace - | |
891 | od->dq_origspace); | |
892 | dqblk->dqb_inodemod = cpu_to_le64(od->dq_dquot.dq_dqb.dqb_curinodes - | |
893 | od->dq_originodes); | |
894 | spin_unlock(&dq_data_lock); | |
38877a43 TM |
895 | trace_olq_set_dquot( |
896 | (unsigned long long)le64_to_cpu(dqblk->dqb_spacemod), | |
897 | (unsigned long long)le64_to_cpu(dqblk->dqb_inodemod), | |
4c376dca | 898 | from_kqid(&init_user_ns, od->dq_dquot.dq_id)); |
9e33d69f JK |
899 | } |
900 | ||
901 | /* Write dquot to local quota file */ | |
741e1289 | 902 | int ocfs2_local_write_dquot(struct dquot *dquot) |
9e33d69f JK |
903 | { |
904 | struct super_block *sb = dquot->dq_sb; | |
905 | struct ocfs2_dquot *od = OCFS2_DQUOT(dquot); | |
f64dd44e | 906 | struct buffer_head *bh; |
4c376dca | 907 | struct inode *lqinode = sb_dqopt(sb)->files[dquot->dq_id.type]; |
9e33d69f JK |
908 | int status; |
909 | ||
f64dd44e JK |
910 | status = ocfs2_read_quota_phys_block(lqinode, od->dq_local_phys_blk, |
911 | &bh); | |
85eb8b73 | 912 | if (status) { |
9e33d69f JK |
913 | mlog_errno(status); |
914 | goto out; | |
915 | } | |
f64dd44e | 916 | status = ocfs2_modify_bh(lqinode, bh, olq_set_dquot, od); |
9e33d69f JK |
917 | if (status < 0) { |
918 | mlog_errno(status); | |
919 | goto out; | |
920 | } | |
921 | out: | |
922 | brelse(bh); | |
923 | return status; | |
924 | } | |
925 | ||
926 | /* Find free entry in local quota file */ | |
927 | static struct ocfs2_quota_chunk *ocfs2_find_free_entry(struct super_block *sb, | |
928 | int type, | |
929 | int *offset) | |
930 | { | |
931 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
932 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
933 | struct ocfs2_quota_chunk *chunk; | |
934 | struct ocfs2_local_disk_chunk *dchunk; | |
935 | int found = 0, len; | |
936 | ||
937 | list_for_each_entry(chunk, &oinfo->dqi_chunk, qc_chunk) { | |
938 | dchunk = (struct ocfs2_local_disk_chunk *) | |
939 | chunk->qc_headerbh->b_data; | |
940 | if (le32_to_cpu(dchunk->dqc_free) > 0) { | |
941 | found = 1; | |
942 | break; | |
943 | } | |
944 | } | |
945 | if (!found) | |
946 | return NULL; | |
947 | ||
948 | if (chunk->qc_num < oinfo->dqi_chunks - 1) { | |
949 | len = ol_chunk_entries(sb); | |
950 | } else { | |
951 | len = (oinfo->dqi_blocks - | |
952 | ol_quota_chunk_block(sb, chunk->qc_num) - 1) | |
953 | * ol_quota_entries_per_block(sb); | |
954 | } | |
955 | ||
93925579 | 956 | found = ocfs2_find_next_zero_bit_unaligned(dchunk->dqc_bitmap, len, 0); |
9e33d69f JK |
957 | /* We failed? */ |
958 | if (found == len) { | |
959 | mlog(ML_ERROR, "Did not find empty entry in chunk %d with %u" | |
960 | " entries free (type=%d)\n", chunk->qc_num, | |
961 | le32_to_cpu(dchunk->dqc_free), type); | |
962 | return ERR_PTR(-EIO); | |
963 | } | |
964 | *offset = found; | |
965 | return chunk; | |
966 | } | |
967 | ||
968 | /* Add new chunk to the local quota file */ | |
969 | static struct ocfs2_quota_chunk *ocfs2_local_quota_add_chunk( | |
970 | struct super_block *sb, | |
971 | int type, | |
972 | int *offset) | |
973 | { | |
974 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
975 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
976 | struct inode *lqinode = sb_dqopt(sb)->files[type]; | |
977 | struct ocfs2_quota_chunk *chunk = NULL; | |
978 | struct ocfs2_local_disk_chunk *dchunk; | |
979 | int status; | |
980 | handle_t *handle; | |
0e7f387b | 981 | struct buffer_head *bh = NULL, *dbh = NULL; |
9e33d69f JK |
982 | u64 p_blkno; |
983 | ||
984 | /* We are protected by dqio_sem so no locking needed */ | |
5693486b | 985 | status = ocfs2_extend_no_holes(lqinode, NULL, |
f17c20dd JB |
986 | i_size_read(lqinode) + 2 * sb->s_blocksize, |
987 | i_size_read(lqinode)); | |
9e33d69f JK |
988 | if (status < 0) { |
989 | mlog_errno(status); | |
990 | goto out; | |
991 | } | |
992 | status = ocfs2_simple_size_update(lqinode, oinfo->dqi_lqi_bh, | |
f17c20dd | 993 | i_size_read(lqinode) + 2 * sb->s_blocksize); |
9e33d69f JK |
994 | if (status < 0) { |
995 | mlog_errno(status); | |
996 | goto out; | |
997 | } | |
998 | ||
999 | chunk = kmem_cache_alloc(ocfs2_qf_chunk_cachep, GFP_NOFS); | |
1000 | if (!chunk) { | |
1001 | status = -ENOMEM; | |
1002 | mlog_errno(status); | |
1003 | goto out; | |
1004 | } | |
0584974a JK |
1005 | /* Local quota info and two new blocks we initialize */ |
1006 | handle = ocfs2_start_trans(OCFS2_SB(sb), | |
1007 | OCFS2_LOCAL_QINFO_WRITE_CREDITS + | |
1008 | 2 * OCFS2_QUOTA_BLOCK_UPDATE_CREDITS); | |
0e7f387b JK |
1009 | if (IS_ERR(handle)) { |
1010 | status = PTR_ERR(handle); | |
1011 | mlog_errno(status); | |
1012 | goto out; | |
1013 | } | |
9e33d69f | 1014 | |
0e7f387b | 1015 | /* Initialize chunk header */ |
9e33d69f JK |
1016 | status = ocfs2_extent_map_get_blocks(lqinode, oinfo->dqi_blocks, |
1017 | &p_blkno, NULL, NULL); | |
9e33d69f JK |
1018 | if (status < 0) { |
1019 | mlog_errno(status); | |
0e7f387b | 1020 | goto out_trans; |
9e33d69f JK |
1021 | } |
1022 | bh = sb_getblk(sb, p_blkno); | |
1023 | if (!bh) { | |
1024 | status = -ENOMEM; | |
1025 | mlog_errno(status); | |
0e7f387b | 1026 | goto out_trans; |
9e33d69f JK |
1027 | } |
1028 | dchunk = (struct ocfs2_local_disk_chunk *)bh->b_data; | |
8cb471e8 | 1029 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(lqinode), bh); |
0cf2f763 | 1030 | status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), bh, |
0e7f387b | 1031 | OCFS2_JOURNAL_ACCESS_CREATE); |
9e33d69f JK |
1032 | if (status < 0) { |
1033 | mlog_errno(status); | |
1034 | goto out_trans; | |
1035 | } | |
1036 | lock_buffer(bh); | |
df32b334 | 1037 | dchunk->dqc_free = cpu_to_le32(ol_quota_entries_per_block(sb)); |
9e33d69f JK |
1038 | memset(dchunk->dqc_bitmap, 0, |
1039 | sb->s_blocksize - sizeof(struct ocfs2_local_disk_chunk) - | |
1040 | OCFS2_QBLK_RESERVED_SPACE); | |
9e33d69f | 1041 | unlock_buffer(bh); |
ec20cec7 | 1042 | ocfs2_journal_dirty(handle, bh); |
9e33d69f | 1043 | |
0e7f387b | 1044 | /* Initialize new block with structures */ |
0e7f387b JK |
1045 | status = ocfs2_extent_map_get_blocks(lqinode, oinfo->dqi_blocks + 1, |
1046 | &p_blkno, NULL, NULL); | |
0e7f387b JK |
1047 | if (status < 0) { |
1048 | mlog_errno(status); | |
1049 | goto out_trans; | |
1050 | } | |
1051 | dbh = sb_getblk(sb, p_blkno); | |
1052 | if (!dbh) { | |
1053 | status = -ENOMEM; | |
1054 | mlog_errno(status); | |
1055 | goto out_trans; | |
1056 | } | |
8cb471e8 | 1057 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(lqinode), dbh); |
0cf2f763 | 1058 | status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), dbh, |
0e7f387b JK |
1059 | OCFS2_JOURNAL_ACCESS_CREATE); |
1060 | if (status < 0) { | |
1061 | mlog_errno(status); | |
1062 | goto out_trans; | |
1063 | } | |
1064 | lock_buffer(dbh); | |
1065 | memset(dbh->b_data, 0, sb->s_blocksize - OCFS2_QBLK_RESERVED_SPACE); | |
1066 | unlock_buffer(dbh); | |
ec20cec7 | 1067 | ocfs2_journal_dirty(handle, dbh); |
0e7f387b JK |
1068 | |
1069 | /* Update local quotafile info */ | |
9e33d69f JK |
1070 | oinfo->dqi_blocks += 2; |
1071 | oinfo->dqi_chunks++; | |
1072 | status = ocfs2_local_write_info(sb, type); | |
1073 | if (status < 0) { | |
1074 | mlog_errno(status); | |
1075 | goto out_trans; | |
1076 | } | |
1077 | status = ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1078 | if (status < 0) { | |
1079 | mlog_errno(status); | |
1080 | goto out; | |
1081 | } | |
1082 | ||
1083 | list_add_tail(&chunk->qc_chunk, &oinfo->dqi_chunk); | |
1084 | chunk->qc_num = list_entry(chunk->qc_chunk.prev, | |
1085 | struct ocfs2_quota_chunk, | |
1086 | qc_chunk)->qc_num + 1; | |
1087 | chunk->qc_headerbh = bh; | |
1088 | *offset = 0; | |
1089 | return chunk; | |
1090 | out_trans: | |
1091 | ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1092 | out: | |
1093 | brelse(bh); | |
0e7f387b | 1094 | brelse(dbh); |
9e33d69f JK |
1095 | kmem_cache_free(ocfs2_qf_chunk_cachep, chunk); |
1096 | return ERR_PTR(status); | |
1097 | } | |
1098 | ||
1099 | /* Find free entry in local quota file */ | |
1100 | static struct ocfs2_quota_chunk *ocfs2_extend_local_quota_file( | |
1101 | struct super_block *sb, | |
1102 | int type, | |
1103 | int *offset) | |
1104 | { | |
1105 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
1106 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
1107 | struct ocfs2_quota_chunk *chunk; | |
1108 | struct inode *lqinode = sb_dqopt(sb)->files[type]; | |
1109 | struct ocfs2_local_disk_chunk *dchunk; | |
1110 | int epb = ol_quota_entries_per_block(sb); | |
1111 | unsigned int chunk_blocks; | |
0e7f387b JK |
1112 | struct buffer_head *bh; |
1113 | u64 p_blkno; | |
9e33d69f JK |
1114 | int status; |
1115 | handle_t *handle; | |
1116 | ||
1117 | if (list_empty(&oinfo->dqi_chunk)) | |
1118 | return ocfs2_local_quota_add_chunk(sb, type, offset); | |
1119 | /* Is the last chunk full? */ | |
1120 | chunk = list_entry(oinfo->dqi_chunk.prev, | |
1121 | struct ocfs2_quota_chunk, qc_chunk); | |
1122 | chunk_blocks = oinfo->dqi_blocks - | |
1123 | ol_quota_chunk_block(sb, chunk->qc_num) - 1; | |
1124 | if (ol_chunk_blocks(sb) == chunk_blocks) | |
1125 | return ocfs2_local_quota_add_chunk(sb, type, offset); | |
1126 | ||
1127 | /* We are protected by dqio_sem so no locking needed */ | |
5693486b | 1128 | status = ocfs2_extend_no_holes(lqinode, NULL, |
f17c20dd JB |
1129 | i_size_read(lqinode) + sb->s_blocksize, |
1130 | i_size_read(lqinode)); | |
9e33d69f JK |
1131 | if (status < 0) { |
1132 | mlog_errno(status); | |
1133 | goto out; | |
1134 | } | |
1135 | status = ocfs2_simple_size_update(lqinode, oinfo->dqi_lqi_bh, | |
f17c20dd | 1136 | i_size_read(lqinode) + sb->s_blocksize); |
9e33d69f JK |
1137 | if (status < 0) { |
1138 | mlog_errno(status); | |
1139 | goto out; | |
1140 | } | |
0e7f387b JK |
1141 | |
1142 | /* Get buffer from the just added block */ | |
0e7f387b JK |
1143 | status = ocfs2_extent_map_get_blocks(lqinode, oinfo->dqi_blocks, |
1144 | &p_blkno, NULL, NULL); | |
0e7f387b JK |
1145 | if (status < 0) { |
1146 | mlog_errno(status); | |
1147 | goto out; | |
1148 | } | |
1149 | bh = sb_getblk(sb, p_blkno); | |
1150 | if (!bh) { | |
1151 | status = -ENOMEM; | |
1152 | mlog_errno(status); | |
1153 | goto out; | |
1154 | } | |
8cb471e8 | 1155 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(lqinode), bh); |
0e7f387b | 1156 | |
0584974a JK |
1157 | /* Local quota info, chunk header and the new block we initialize */ |
1158 | handle = ocfs2_start_trans(OCFS2_SB(sb), | |
1159 | OCFS2_LOCAL_QINFO_WRITE_CREDITS + | |
1160 | 2 * OCFS2_QUOTA_BLOCK_UPDATE_CREDITS); | |
9e33d69f JK |
1161 | if (IS_ERR(handle)) { |
1162 | status = PTR_ERR(handle); | |
1163 | mlog_errno(status); | |
1164 | goto out; | |
1165 | } | |
0e7f387b | 1166 | /* Zero created block */ |
0cf2f763 | 1167 | status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), bh, |
0e7f387b JK |
1168 | OCFS2_JOURNAL_ACCESS_CREATE); |
1169 | if (status < 0) { | |
1170 | mlog_errno(status); | |
1171 | goto out_trans; | |
1172 | } | |
1173 | lock_buffer(bh); | |
1174 | memset(bh->b_data, 0, sb->s_blocksize); | |
1175 | unlock_buffer(bh); | |
ec20cec7 JB |
1176 | ocfs2_journal_dirty(handle, bh); |
1177 | ||
0e7f387b | 1178 | /* Update chunk header */ |
0cf2f763 JB |
1179 | status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), |
1180 | chunk->qc_headerbh, | |
9e33d69f JK |
1181 | OCFS2_JOURNAL_ACCESS_WRITE); |
1182 | if (status < 0) { | |
1183 | mlog_errno(status); | |
1184 | goto out_trans; | |
1185 | } | |
1186 | ||
1187 | dchunk = (struct ocfs2_local_disk_chunk *)chunk->qc_headerbh->b_data; | |
1188 | lock_buffer(chunk->qc_headerbh); | |
1189 | le32_add_cpu(&dchunk->dqc_free, ol_quota_entries_per_block(sb)); | |
1190 | unlock_buffer(chunk->qc_headerbh); | |
ec20cec7 JB |
1191 | ocfs2_journal_dirty(handle, chunk->qc_headerbh); |
1192 | ||
0e7f387b | 1193 | /* Update file header */ |
9e33d69f JK |
1194 | oinfo->dqi_blocks++; |
1195 | status = ocfs2_local_write_info(sb, type); | |
1196 | if (status < 0) { | |
1197 | mlog_errno(status); | |
1198 | goto out_trans; | |
1199 | } | |
1200 | ||
1201 | status = ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1202 | if (status < 0) { | |
1203 | mlog_errno(status); | |
1204 | goto out; | |
1205 | } | |
1206 | *offset = chunk_blocks * epb; | |
1207 | return chunk; | |
1208 | out_trans: | |
1209 | ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1210 | out: | |
1211 | return ERR_PTR(status); | |
1212 | } | |
1213 | ||
df32b334 | 1214 | static void olq_alloc_dquot(struct buffer_head *bh, void *private) |
9e33d69f JK |
1215 | { |
1216 | int *offset = private; | |
1217 | struct ocfs2_local_disk_chunk *dchunk; | |
1218 | ||
1219 | dchunk = (struct ocfs2_local_disk_chunk *)bh->b_data; | |
93925579 | 1220 | ocfs2_set_bit_unaligned(*offset, dchunk->dqc_bitmap); |
9e33d69f JK |
1221 | le32_add_cpu(&dchunk->dqc_free, -1); |
1222 | } | |
1223 | ||
1224 | /* Create dquot in the local file for given id */ | |
fb8dd8d7 | 1225 | int ocfs2_create_local_dquot(struct dquot *dquot) |
9e33d69f JK |
1226 | { |
1227 | struct super_block *sb = dquot->dq_sb; | |
4c376dca | 1228 | int type = dquot->dq_id.type; |
9e33d69f JK |
1229 | struct inode *lqinode = sb_dqopt(sb)->files[type]; |
1230 | struct ocfs2_quota_chunk *chunk; | |
1231 | struct ocfs2_dquot *od = OCFS2_DQUOT(dquot); | |
1232 | int offset; | |
1233 | int status; | |
f64dd44e | 1234 | u64 pcount; |
9e33d69f | 1235 | |
f64dd44e | 1236 | down_write(&OCFS2_I(lqinode)->ip_alloc_sem); |
9e33d69f JK |
1237 | chunk = ocfs2_find_free_entry(sb, type, &offset); |
1238 | if (!chunk) { | |
1239 | chunk = ocfs2_extend_local_quota_file(sb, type, &offset); | |
f64dd44e JK |
1240 | if (IS_ERR(chunk)) { |
1241 | status = PTR_ERR(chunk); | |
1242 | goto out; | |
1243 | } | |
9e33d69f | 1244 | } else if (IS_ERR(chunk)) { |
f64dd44e JK |
1245 | status = PTR_ERR(chunk); |
1246 | goto out; | |
9e33d69f JK |
1247 | } |
1248 | od->dq_local_off = ol_dqblk_off(sb, chunk->qc_num, offset); | |
1249 | od->dq_chunk = chunk; | |
f64dd44e JK |
1250 | status = ocfs2_extent_map_get_blocks(lqinode, |
1251 | ol_dqblk_block(sb, chunk->qc_num, offset), | |
1252 | &od->dq_local_phys_blk, | |
1253 | &pcount, | |
1254 | NULL); | |
9e33d69f JK |
1255 | |
1256 | /* Initialize dquot structure on disk */ | |
1257 | status = ocfs2_local_write_dquot(dquot); | |
1258 | if (status < 0) { | |
1259 | mlog_errno(status); | |
1260 | goto out; | |
1261 | } | |
1262 | ||
1263 | /* Mark structure as allocated */ | |
1264 | status = ocfs2_modify_bh(lqinode, chunk->qc_headerbh, olq_alloc_dquot, | |
1265 | &offset); | |
1266 | if (status < 0) { | |
1267 | mlog_errno(status); | |
1268 | goto out; | |
1269 | } | |
1270 | out: | |
f64dd44e | 1271 | up_write(&OCFS2_I(lqinode)->ip_alloc_sem); |
9e33d69f JK |
1272 | return status; |
1273 | } | |
1274 | ||
fb8dd8d7 JK |
1275 | /* |
1276 | * Release dquot structure from local quota file. ocfs2_release_dquot() has | |
1277 | * already started a transaction and written all changes to global quota file | |
1278 | */ | |
1279 | int ocfs2_local_release_dquot(handle_t *handle, struct dquot *dquot) | |
9e33d69f JK |
1280 | { |
1281 | int status; | |
4c376dca | 1282 | int type = dquot->dq_id.type; |
9e33d69f JK |
1283 | struct ocfs2_dquot *od = OCFS2_DQUOT(dquot); |
1284 | struct super_block *sb = dquot->dq_sb; | |
1285 | struct ocfs2_local_disk_chunk *dchunk; | |
1286 | int offset; | |
9e33d69f | 1287 | |
0cf2f763 JB |
1288 | status = ocfs2_journal_access_dq(handle, |
1289 | INODE_CACHE(sb_dqopt(sb)->files[type]), | |
9e33d69f JK |
1290 | od->dq_chunk->qc_headerbh, OCFS2_JOURNAL_ACCESS_WRITE); |
1291 | if (status < 0) { | |
1292 | mlog_errno(status); | |
1293 | goto out; | |
1294 | } | |
1295 | offset = ol_dqblk_chunk_off(sb, od->dq_chunk->qc_num, | |
1296 | od->dq_local_off); | |
1297 | dchunk = (struct ocfs2_local_disk_chunk *) | |
1298 | (od->dq_chunk->qc_headerbh->b_data); | |
1299 | /* Mark structure as freed */ | |
1300 | lock_buffer(od->dq_chunk->qc_headerbh); | |
93925579 | 1301 | ocfs2_clear_bit_unaligned(offset, dchunk->dqc_bitmap); |
9e33d69f JK |
1302 | le32_add_cpu(&dchunk->dqc_free, 1); |
1303 | unlock_buffer(od->dq_chunk->qc_headerbh); | |
ec20cec7 JB |
1304 | ocfs2_journal_dirty(handle, od->dq_chunk->qc_headerbh); |
1305 | ||
9e33d69f | 1306 | out: |
9e33d69f JK |
1307 | return status; |
1308 | } | |
1309 | ||
1472da5f | 1310 | static const struct quota_format_ops ocfs2_format_ops = { |
9e33d69f JK |
1311 | .check_quota_file = ocfs2_local_check_quota_file, |
1312 | .read_file_info = ocfs2_local_read_info, | |
1313 | .write_file_info = ocfs2_global_write_info, | |
1314 | .free_file_info = ocfs2_local_free_info, | |
9e33d69f JK |
1315 | }; |
1316 | ||
1317 | struct quota_format_type ocfs2_quota_format = { | |
1318 | .qf_fmt_id = QFMT_OCFS2, | |
1319 | .qf_ops = &ocfs2_format_ops, | |
1320 | .qf_owner = THIS_MODULE | |
1321 | }; |