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 | ||
0584974a JK |
104 | handle = ocfs2_start_trans(OCFS2_SB(sb), |
105 | OCFS2_QUOTA_BLOCK_UPDATE_CREDITS); | |
9e33d69f JK |
106 | if (IS_ERR(handle)) { |
107 | status = PTR_ERR(handle); | |
108 | mlog_errno(status); | |
109 | return status; | |
110 | } | |
13723d00 JB |
111 | status = ocfs2_journal_access_dq(handle, inode, bh, |
112 | OCFS2_JOURNAL_ACCESS_WRITE); | |
9e33d69f JK |
113 | if (status < 0) { |
114 | mlog_errno(status); | |
115 | ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
116 | return status; | |
117 | } | |
118 | lock_buffer(bh); | |
119 | modify(bh, private); | |
120 | unlock_buffer(bh); | |
121 | status = ocfs2_journal_dirty(handle, bh); | |
122 | if (status < 0) { | |
123 | mlog_errno(status); | |
124 | ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
125 | return status; | |
126 | } | |
127 | status = ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
128 | if (status < 0) { | |
129 | mlog_errno(status); | |
130 | return status; | |
131 | } | |
132 | return 0; | |
133 | } | |
134 | ||
135 | /* Check whether we understand format of quota files */ | |
136 | static int ocfs2_local_check_quota_file(struct super_block *sb, int type) | |
137 | { | |
138 | unsigned int lmagics[MAXQUOTAS] = OCFS2_LOCAL_QMAGICS; | |
139 | unsigned int lversions[MAXQUOTAS] = OCFS2_LOCAL_QVERSIONS; | |
140 | unsigned int gmagics[MAXQUOTAS] = OCFS2_GLOBAL_QMAGICS; | |
141 | unsigned int gversions[MAXQUOTAS] = OCFS2_GLOBAL_QVERSIONS; | |
142 | unsigned int ino[MAXQUOTAS] = { USER_QUOTA_SYSTEM_INODE, | |
143 | GROUP_QUOTA_SYSTEM_INODE }; | |
85eb8b73 | 144 | struct buffer_head *bh = NULL; |
9e33d69f JK |
145 | struct inode *linode = sb_dqopt(sb)->files[type]; |
146 | struct inode *ginode = NULL; | |
147 | struct ocfs2_disk_dqheader *dqhead; | |
148 | int status, ret = 0; | |
149 | ||
150 | /* First check whether we understand local quota file */ | |
85eb8b73 JB |
151 | status = ocfs2_read_quota_block(linode, 0, &bh); |
152 | if (status) { | |
9e33d69f JK |
153 | mlog_errno(status); |
154 | mlog(ML_ERROR, "failed to read quota file header (type=%d)\n", | |
155 | type); | |
156 | goto out_err; | |
157 | } | |
158 | dqhead = (struct ocfs2_disk_dqheader *)(bh->b_data); | |
159 | if (le32_to_cpu(dqhead->dqh_magic) != lmagics[type]) { | |
160 | mlog(ML_ERROR, "quota file magic does not match (%u != %u)," | |
161 | " type=%d\n", le32_to_cpu(dqhead->dqh_magic), | |
162 | lmagics[type], type); | |
163 | goto out_err; | |
164 | } | |
165 | if (le32_to_cpu(dqhead->dqh_version) != lversions[type]) { | |
166 | mlog(ML_ERROR, "quota file version does not match (%u != %u)," | |
167 | " type=%d\n", le32_to_cpu(dqhead->dqh_version), | |
168 | lversions[type], type); | |
169 | goto out_err; | |
170 | } | |
171 | brelse(bh); | |
172 | bh = NULL; | |
173 | ||
174 | /* Next check whether we understand global quota file */ | |
175 | ginode = ocfs2_get_system_file_inode(OCFS2_SB(sb), ino[type], | |
176 | OCFS2_INVALID_SLOT); | |
177 | if (!ginode) { | |
178 | mlog(ML_ERROR, "cannot get global quota file inode " | |
179 | "(type=%d)\n", type); | |
180 | goto out_err; | |
181 | } | |
182 | /* Since the header is read only, we don't care about locking */ | |
85eb8b73 JB |
183 | status = ocfs2_read_quota_block(ginode, 0, &bh); |
184 | if (status) { | |
9e33d69f JK |
185 | mlog_errno(status); |
186 | mlog(ML_ERROR, "failed to read global quota file header " | |
187 | "(type=%d)\n", type); | |
188 | goto out_err; | |
189 | } | |
190 | dqhead = (struct ocfs2_disk_dqheader *)(bh->b_data); | |
191 | if (le32_to_cpu(dqhead->dqh_magic) != gmagics[type]) { | |
192 | mlog(ML_ERROR, "global quota file magic does not match " | |
193 | "(%u != %u), type=%d\n", | |
194 | le32_to_cpu(dqhead->dqh_magic), gmagics[type], type); | |
195 | goto out_err; | |
196 | } | |
197 | if (le32_to_cpu(dqhead->dqh_version) != gversions[type]) { | |
198 | mlog(ML_ERROR, "global quota file version does not match " | |
199 | "(%u != %u), type=%d\n", | |
200 | le32_to_cpu(dqhead->dqh_version), gversions[type], | |
201 | type); | |
202 | goto out_err; | |
203 | } | |
204 | ||
205 | ret = 1; | |
206 | out_err: | |
207 | brelse(bh); | |
208 | iput(ginode); | |
209 | return ret; | |
210 | } | |
211 | ||
212 | /* Release given list of quota file chunks */ | |
213 | static void ocfs2_release_local_quota_bitmaps(struct list_head *head) | |
214 | { | |
215 | struct ocfs2_quota_chunk *pos, *next; | |
216 | ||
217 | list_for_each_entry_safe(pos, next, head, qc_chunk) { | |
218 | list_del(&pos->qc_chunk); | |
219 | brelse(pos->qc_headerbh); | |
220 | kmem_cache_free(ocfs2_qf_chunk_cachep, pos); | |
221 | } | |
222 | } | |
223 | ||
224 | /* Load quota bitmaps into memory */ | |
225 | static int ocfs2_load_local_quota_bitmaps(struct inode *inode, | |
226 | struct ocfs2_local_disk_dqinfo *ldinfo, | |
227 | struct list_head *head) | |
228 | { | |
229 | struct ocfs2_quota_chunk *newchunk; | |
230 | int i, status; | |
231 | ||
232 | INIT_LIST_HEAD(head); | |
233 | for (i = 0; i < le32_to_cpu(ldinfo->dqi_chunks); i++) { | |
234 | newchunk = kmem_cache_alloc(ocfs2_qf_chunk_cachep, GFP_NOFS); | |
235 | if (!newchunk) { | |
236 | ocfs2_release_local_quota_bitmaps(head); | |
237 | return -ENOMEM; | |
238 | } | |
239 | newchunk->qc_num = i; | |
85eb8b73 JB |
240 | newchunk->qc_headerbh = NULL; |
241 | status = ocfs2_read_quota_block(inode, | |
9e33d69f | 242 | ol_quota_chunk_block(inode->i_sb, i), |
85eb8b73 JB |
243 | &newchunk->qc_headerbh); |
244 | if (status) { | |
9e33d69f JK |
245 | mlog_errno(status); |
246 | kmem_cache_free(ocfs2_qf_chunk_cachep, newchunk); | |
247 | ocfs2_release_local_quota_bitmaps(head); | |
248 | return status; | |
249 | } | |
250 | list_add_tail(&newchunk->qc_chunk, head); | |
251 | } | |
252 | return 0; | |
253 | } | |
254 | ||
255 | static void olq_update_info(struct buffer_head *bh, void *private) | |
256 | { | |
257 | struct mem_dqinfo *info = private; | |
258 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
259 | struct ocfs2_local_disk_dqinfo *ldinfo; | |
260 | ||
261 | ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + | |
262 | OCFS2_LOCAL_INFO_OFF); | |
263 | spin_lock(&dq_data_lock); | |
264 | ldinfo->dqi_flags = cpu_to_le32(info->dqi_flags & DQF_MASK); | |
265 | ldinfo->dqi_chunks = cpu_to_le32(oinfo->dqi_chunks); | |
266 | ldinfo->dqi_blocks = cpu_to_le32(oinfo->dqi_blocks); | |
267 | spin_unlock(&dq_data_lock); | |
268 | } | |
269 | ||
2205363d JK |
270 | static int ocfs2_add_recovery_chunk(struct super_block *sb, |
271 | struct ocfs2_local_disk_chunk *dchunk, | |
272 | int chunk, | |
273 | struct list_head *head) | |
274 | { | |
275 | struct ocfs2_recovery_chunk *rc; | |
276 | ||
277 | rc = kmalloc(sizeof(struct ocfs2_recovery_chunk), GFP_NOFS); | |
278 | if (!rc) | |
279 | return -ENOMEM; | |
280 | rc->rc_chunk = chunk; | |
281 | rc->rc_bitmap = kmalloc(sb->s_blocksize, GFP_NOFS); | |
282 | if (!rc->rc_bitmap) { | |
283 | kfree(rc); | |
284 | return -ENOMEM; | |
285 | } | |
286 | memcpy(rc->rc_bitmap, dchunk->dqc_bitmap, | |
287 | (ol_chunk_entries(sb) + 7) >> 3); | |
288 | list_add_tail(&rc->rc_list, head); | |
289 | return 0; | |
290 | } | |
291 | ||
292 | static void free_recovery_list(struct list_head *head) | |
293 | { | |
294 | struct ocfs2_recovery_chunk *next; | |
295 | struct ocfs2_recovery_chunk *rchunk; | |
296 | ||
297 | list_for_each_entry_safe(rchunk, next, head, rc_list) { | |
298 | list_del(&rchunk->rc_list); | |
299 | kfree(rchunk->rc_bitmap); | |
300 | kfree(rchunk); | |
301 | } | |
302 | } | |
303 | ||
304 | void ocfs2_free_quota_recovery(struct ocfs2_quota_recovery *rec) | |
305 | { | |
306 | int type; | |
307 | ||
308 | for (type = 0; type < MAXQUOTAS; type++) | |
309 | free_recovery_list(&(rec->r_list[type])); | |
310 | kfree(rec); | |
311 | } | |
312 | ||
313 | /* Load entries in our quota file we have to recover*/ | |
314 | static int ocfs2_recovery_load_quota(struct inode *lqinode, | |
315 | struct ocfs2_local_disk_dqinfo *ldinfo, | |
316 | int type, | |
317 | struct list_head *head) | |
318 | { | |
319 | struct super_block *sb = lqinode->i_sb; | |
320 | struct buffer_head *hbh; | |
321 | struct ocfs2_local_disk_chunk *dchunk; | |
322 | int i, chunks = le32_to_cpu(ldinfo->dqi_chunks); | |
323 | int status = 0; | |
324 | ||
325 | for (i = 0; i < chunks; i++) { | |
85eb8b73 JB |
326 | hbh = NULL; |
327 | status = ocfs2_read_quota_block(lqinode, | |
328 | ol_quota_chunk_block(sb, i), | |
329 | &hbh); | |
330 | if (status) { | |
2205363d JK |
331 | mlog_errno(status); |
332 | break; | |
333 | } | |
334 | dchunk = (struct ocfs2_local_disk_chunk *)hbh->b_data; | |
335 | if (le32_to_cpu(dchunk->dqc_free) < ol_chunk_entries(sb)) | |
336 | status = ocfs2_add_recovery_chunk(sb, dchunk, i, head); | |
337 | brelse(hbh); | |
338 | if (status < 0) | |
339 | break; | |
340 | } | |
341 | if (status < 0) | |
342 | free_recovery_list(head); | |
343 | return status; | |
344 | } | |
345 | ||
346 | static struct ocfs2_quota_recovery *ocfs2_alloc_quota_recovery(void) | |
347 | { | |
348 | int type; | |
349 | struct ocfs2_quota_recovery *rec; | |
350 | ||
351 | rec = kmalloc(sizeof(struct ocfs2_quota_recovery), GFP_NOFS); | |
352 | if (!rec) | |
353 | return NULL; | |
354 | for (type = 0; type < MAXQUOTAS; type++) | |
355 | INIT_LIST_HEAD(&(rec->r_list[type])); | |
356 | return rec; | |
357 | } | |
358 | ||
359 | /* Load information we need for quota recovery into memory */ | |
360 | struct ocfs2_quota_recovery *ocfs2_begin_quota_recovery( | |
361 | struct ocfs2_super *osb, | |
362 | int slot_num) | |
363 | { | |
364 | unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA, | |
365 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA}; | |
366 | unsigned int ino[MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE, | |
367 | LOCAL_GROUP_QUOTA_SYSTEM_INODE }; | |
368 | struct super_block *sb = osb->sb; | |
369 | struct ocfs2_local_disk_dqinfo *ldinfo; | |
370 | struct inode *lqinode; | |
371 | struct buffer_head *bh; | |
372 | int type; | |
373 | int status = 0; | |
374 | struct ocfs2_quota_recovery *rec; | |
375 | ||
376 | mlog(ML_NOTICE, "Beginning quota recovery in slot %u\n", slot_num); | |
377 | rec = ocfs2_alloc_quota_recovery(); | |
378 | if (!rec) | |
379 | return ERR_PTR(-ENOMEM); | |
380 | /* First init... */ | |
381 | ||
382 | for (type = 0; type < MAXQUOTAS; type++) { | |
383 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type])) | |
384 | continue; | |
385 | /* At this point, journal of the slot is already replayed so | |
386 | * we can trust metadata and data of the quota file */ | |
387 | lqinode = ocfs2_get_system_file_inode(osb, ino[type], slot_num); | |
388 | if (!lqinode) { | |
389 | status = -ENOENT; | |
390 | goto out; | |
391 | } | |
392 | status = ocfs2_inode_lock_full(lqinode, NULL, 1, | |
393 | OCFS2_META_LOCK_RECOVERY); | |
394 | if (status < 0) { | |
395 | mlog_errno(status); | |
396 | goto out_put; | |
397 | } | |
398 | /* Now read local header */ | |
85eb8b73 JB |
399 | bh = NULL; |
400 | status = ocfs2_read_quota_block(lqinode, 0, &bh); | |
401 | if (status) { | |
2205363d JK |
402 | mlog_errno(status); |
403 | mlog(ML_ERROR, "failed to read quota file info header " | |
404 | "(slot=%d type=%d)\n", slot_num, type); | |
405 | goto out_lock; | |
406 | } | |
407 | ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + | |
408 | OCFS2_LOCAL_INFO_OFF); | |
409 | status = ocfs2_recovery_load_quota(lqinode, ldinfo, type, | |
410 | &rec->r_list[type]); | |
411 | brelse(bh); | |
412 | out_lock: | |
413 | ocfs2_inode_unlock(lqinode, 1); | |
414 | out_put: | |
415 | iput(lqinode); | |
416 | if (status < 0) | |
417 | break; | |
418 | } | |
419 | out: | |
420 | if (status < 0) { | |
421 | ocfs2_free_quota_recovery(rec); | |
422 | rec = ERR_PTR(status); | |
423 | } | |
424 | return rec; | |
425 | } | |
426 | ||
427 | /* Sync changes in local quota file into global quota file and | |
428 | * reinitialize local quota file. | |
429 | * The function expects local quota file to be already locked and | |
430 | * dqonoff_mutex locked. */ | |
431 | static int ocfs2_recover_local_quota_file(struct inode *lqinode, | |
432 | int type, | |
433 | struct ocfs2_quota_recovery *rec) | |
434 | { | |
435 | struct super_block *sb = lqinode->i_sb; | |
436 | struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv; | |
437 | struct ocfs2_local_disk_chunk *dchunk; | |
438 | struct ocfs2_local_disk_dqblk *dqblk; | |
439 | struct dquot *dquot; | |
440 | handle_t *handle; | |
441 | struct buffer_head *hbh = NULL, *qbh = NULL; | |
442 | int status = 0; | |
443 | int bit, chunk; | |
444 | struct ocfs2_recovery_chunk *rchunk, *next; | |
445 | qsize_t spacechange, inodechange; | |
446 | ||
447 | mlog_entry("ino=%lu type=%u", (unsigned long)lqinode->i_ino, type); | |
448 | ||
2205363d JK |
449 | list_for_each_entry_safe(rchunk, next, &(rec->r_list[type]), rc_list) { |
450 | chunk = rchunk->rc_chunk; | |
85eb8b73 JB |
451 | hbh = NULL; |
452 | status = ocfs2_read_quota_block(lqinode, | |
453 | ol_quota_chunk_block(sb, chunk), | |
454 | &hbh); | |
455 | if (status) { | |
2205363d JK |
456 | mlog_errno(status); |
457 | break; | |
458 | } | |
459 | dchunk = (struct ocfs2_local_disk_chunk *)hbh->b_data; | |
460 | for_each_bit(bit, rchunk->rc_bitmap, ol_chunk_entries(sb)) { | |
85eb8b73 JB |
461 | qbh = NULL; |
462 | status = ocfs2_read_quota_block(lqinode, | |
2205363d | 463 | ol_dqblk_block(sb, chunk, bit), |
85eb8b73 JB |
464 | &qbh); |
465 | if (status) { | |
2205363d JK |
466 | mlog_errno(status); |
467 | break; | |
468 | } | |
469 | dqblk = (struct ocfs2_local_disk_dqblk *)(qbh->b_data + | |
470 | ol_dqblk_block_off(sb, chunk, bit)); | |
471 | dquot = dqget(sb, le64_to_cpu(dqblk->dqb_id), type); | |
472 | if (!dquot) { | |
473 | status = -EIO; | |
474 | mlog(ML_ERROR, "Failed to get quota structure " | |
475 | "for id %u, type %d. Cannot finish quota " | |
476 | "file recovery.\n", | |
477 | (unsigned)le64_to_cpu(dqblk->dqb_id), | |
478 | type); | |
479 | goto out_put_bh; | |
480 | } | |
80d73f15 JK |
481 | status = ocfs2_lock_global_qf(oinfo, 1); |
482 | if (status < 0) { | |
483 | mlog_errno(status); | |
484 | goto out_put_dquot; | |
485 | } | |
486 | ||
2205363d JK |
487 | handle = ocfs2_start_trans(OCFS2_SB(sb), |
488 | OCFS2_QSYNC_CREDITS); | |
489 | if (IS_ERR(handle)) { | |
490 | status = PTR_ERR(handle); | |
491 | mlog_errno(status); | |
80d73f15 | 492 | goto out_drop_lock; |
2205363d JK |
493 | } |
494 | mutex_lock(&sb_dqopt(sb)->dqio_mutex); | |
495 | spin_lock(&dq_data_lock); | |
496 | /* Add usage from quota entry into quota changes | |
497 | * of our node. Auxiliary variables are important | |
498 | * due to signedness */ | |
499 | spacechange = le64_to_cpu(dqblk->dqb_spacemod); | |
500 | inodechange = le64_to_cpu(dqblk->dqb_inodemod); | |
501 | dquot->dq_dqb.dqb_curspace += spacechange; | |
502 | dquot->dq_dqb.dqb_curinodes += inodechange; | |
503 | spin_unlock(&dq_data_lock); | |
504 | /* We want to drop reference held by the crashed | |
505 | * node. Since we have our own reference we know | |
506 | * global structure actually won't be freed. */ | |
507 | status = ocfs2_global_release_dquot(dquot); | |
508 | if (status < 0) { | |
509 | mlog_errno(status); | |
510 | goto out_commit; | |
511 | } | |
512 | /* Release local quota file entry */ | |
13723d00 | 513 | status = ocfs2_journal_access_dq(handle, lqinode, |
2205363d JK |
514 | qbh, OCFS2_JOURNAL_ACCESS_WRITE); |
515 | if (status < 0) { | |
516 | mlog_errno(status); | |
517 | goto out_commit; | |
518 | } | |
519 | lock_buffer(qbh); | |
520 | WARN_ON(!ocfs2_test_bit(bit, dchunk->dqc_bitmap)); | |
521 | ocfs2_clear_bit(bit, dchunk->dqc_bitmap); | |
522 | le32_add_cpu(&dchunk->dqc_free, 1); | |
523 | unlock_buffer(qbh); | |
524 | status = ocfs2_journal_dirty(handle, qbh); | |
525 | if (status < 0) | |
526 | mlog_errno(status); | |
527 | out_commit: | |
528 | mutex_unlock(&sb_dqopt(sb)->dqio_mutex); | |
529 | ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
80d73f15 JK |
530 | out_drop_lock: |
531 | ocfs2_unlock_global_qf(oinfo, 1); | |
2205363d JK |
532 | out_put_dquot: |
533 | dqput(dquot); | |
534 | out_put_bh: | |
535 | brelse(qbh); | |
536 | if (status < 0) | |
537 | break; | |
538 | } | |
539 | brelse(hbh); | |
540 | list_del(&rchunk->rc_list); | |
541 | kfree(rchunk->rc_bitmap); | |
542 | kfree(rchunk); | |
543 | if (status < 0) | |
544 | break; | |
545 | } | |
2205363d JK |
546 | if (status < 0) |
547 | free_recovery_list(&(rec->r_list[type])); | |
548 | mlog_exit(status); | |
549 | return status; | |
550 | } | |
551 | ||
552 | /* Recover local quota files for given node different from us */ | |
553 | int ocfs2_finish_quota_recovery(struct ocfs2_super *osb, | |
554 | struct ocfs2_quota_recovery *rec, | |
555 | int slot_num) | |
556 | { | |
557 | unsigned int ino[MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE, | |
558 | LOCAL_GROUP_QUOTA_SYSTEM_INODE }; | |
559 | struct super_block *sb = osb->sb; | |
560 | struct ocfs2_local_disk_dqinfo *ldinfo; | |
561 | struct buffer_head *bh; | |
562 | handle_t *handle; | |
563 | int type; | |
564 | int status = 0; | |
565 | struct inode *lqinode; | |
566 | unsigned int flags; | |
567 | ||
568 | mlog(ML_NOTICE, "Finishing quota recovery in slot %u\n", slot_num); | |
569 | mutex_lock(&sb_dqopt(sb)->dqonoff_mutex); | |
570 | for (type = 0; type < MAXQUOTAS; type++) { | |
571 | if (list_empty(&(rec->r_list[type]))) | |
572 | continue; | |
573 | mlog(0, "Recovering quota in slot %d\n", slot_num); | |
574 | lqinode = ocfs2_get_system_file_inode(osb, ino[type], slot_num); | |
575 | if (!lqinode) { | |
576 | status = -ENOENT; | |
577 | goto out; | |
578 | } | |
579 | status = ocfs2_inode_lock_full(lqinode, NULL, 1, | |
580 | OCFS2_META_LOCK_NOQUEUE); | |
581 | /* Someone else is holding the lock? Then he must be | |
582 | * doing the recovery. Just skip the file... */ | |
583 | if (status == -EAGAIN) { | |
584 | mlog(ML_NOTICE, "skipping quota recovery for slot %d " | |
585 | "because quota file is locked.\n", slot_num); | |
586 | status = 0; | |
587 | goto out_put; | |
588 | } else if (status < 0) { | |
589 | mlog_errno(status); | |
590 | goto out_put; | |
591 | } | |
592 | /* Now read local header */ | |
85eb8b73 JB |
593 | bh = NULL; |
594 | status = ocfs2_read_quota_block(lqinode, 0, &bh); | |
595 | if (status) { | |
2205363d JK |
596 | mlog_errno(status); |
597 | mlog(ML_ERROR, "failed to read quota file info header " | |
598 | "(slot=%d type=%d)\n", slot_num, type); | |
599 | goto out_lock; | |
600 | } | |
601 | ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + | |
602 | OCFS2_LOCAL_INFO_OFF); | |
603 | /* Is recovery still needed? */ | |
604 | flags = le32_to_cpu(ldinfo->dqi_flags); | |
605 | if (!(flags & OLQF_CLEAN)) | |
606 | status = ocfs2_recover_local_quota_file(lqinode, | |
607 | type, | |
608 | rec); | |
609 | /* We don't want to mark file as clean when it is actually | |
610 | * active */ | |
611 | if (slot_num == osb->slot_num) | |
612 | goto out_bh; | |
613 | /* Mark quota file as clean if we are recovering quota file of | |
614 | * some other node. */ | |
0584974a JK |
615 | handle = ocfs2_start_trans(osb, |
616 | OCFS2_LOCAL_QINFO_WRITE_CREDITS); | |
2205363d JK |
617 | if (IS_ERR(handle)) { |
618 | status = PTR_ERR(handle); | |
619 | mlog_errno(status); | |
620 | goto out_bh; | |
621 | } | |
13723d00 JB |
622 | status = ocfs2_journal_access_dq(handle, lqinode, bh, |
623 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2205363d JK |
624 | if (status < 0) { |
625 | mlog_errno(status); | |
626 | goto out_trans; | |
627 | } | |
628 | lock_buffer(bh); | |
629 | ldinfo->dqi_flags = cpu_to_le32(flags | OLQF_CLEAN); | |
630 | unlock_buffer(bh); | |
631 | status = ocfs2_journal_dirty(handle, bh); | |
632 | if (status < 0) | |
633 | mlog_errno(status); | |
634 | out_trans: | |
635 | ocfs2_commit_trans(osb, handle); | |
636 | out_bh: | |
637 | brelse(bh); | |
638 | out_lock: | |
639 | ocfs2_inode_unlock(lqinode, 1); | |
640 | out_put: | |
641 | iput(lqinode); | |
642 | if (status < 0) | |
643 | break; | |
644 | } | |
645 | out: | |
646 | mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex); | |
647 | kfree(rec); | |
648 | return status; | |
649 | } | |
650 | ||
9e33d69f JK |
651 | /* Read information header from quota file */ |
652 | static int ocfs2_local_read_info(struct super_block *sb, int type) | |
653 | { | |
654 | struct ocfs2_local_disk_dqinfo *ldinfo; | |
655 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
656 | struct ocfs2_mem_dqinfo *oinfo; | |
657 | struct inode *lqinode = sb_dqopt(sb)->files[type]; | |
658 | int status; | |
659 | struct buffer_head *bh = NULL; | |
2205363d | 660 | struct ocfs2_quota_recovery *rec; |
9e33d69f JK |
661 | int locked = 0; |
662 | ||
b4c30de3 JK |
663 | /* We don't need the lock and we have to acquire quota file locks |
664 | * which will later depend on this lock */ | |
665 | mutex_unlock(&sb_dqopt(sb)->dqio_mutex); | |
9e33d69f JK |
666 | info->dqi_maxblimit = 0x7fffffffffffffffLL; |
667 | info->dqi_maxilimit = 0x7fffffffffffffffLL; | |
668 | oinfo = kmalloc(sizeof(struct ocfs2_mem_dqinfo), GFP_NOFS); | |
669 | if (!oinfo) { | |
670 | mlog(ML_ERROR, "failed to allocate memory for ocfs2 quota" | |
671 | " info."); | |
672 | goto out_err; | |
673 | } | |
674 | info->dqi_priv = oinfo; | |
675 | oinfo->dqi_type = type; | |
676 | INIT_LIST_HEAD(&oinfo->dqi_chunk); | |
2205363d | 677 | oinfo->dqi_rec = NULL; |
9e33d69f JK |
678 | oinfo->dqi_lqi_bh = NULL; |
679 | oinfo->dqi_ibh = NULL; | |
680 | ||
681 | status = ocfs2_global_read_info(sb, type); | |
682 | if (status < 0) | |
683 | goto out_err; | |
684 | ||
685 | status = ocfs2_inode_lock(lqinode, &oinfo->dqi_lqi_bh, 1); | |
686 | if (status < 0) { | |
687 | mlog_errno(status); | |
688 | goto out_err; | |
689 | } | |
690 | locked = 1; | |
691 | ||
692 | /* Now read local header */ | |
85eb8b73 JB |
693 | status = ocfs2_read_quota_block(lqinode, 0, &bh); |
694 | if (status) { | |
9e33d69f JK |
695 | mlog_errno(status); |
696 | mlog(ML_ERROR, "failed to read quota file info header " | |
697 | "(type=%d)\n", type); | |
698 | goto out_err; | |
699 | } | |
700 | ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + | |
701 | OCFS2_LOCAL_INFO_OFF); | |
702 | info->dqi_flags = le32_to_cpu(ldinfo->dqi_flags); | |
703 | oinfo->dqi_chunks = le32_to_cpu(ldinfo->dqi_chunks); | |
704 | oinfo->dqi_blocks = le32_to_cpu(ldinfo->dqi_blocks); | |
705 | oinfo->dqi_ibh = bh; | |
706 | ||
707 | /* We crashed when using local quota file? */ | |
2205363d JK |
708 | if (!(info->dqi_flags & OLQF_CLEAN)) { |
709 | rec = OCFS2_SB(sb)->quota_rec; | |
710 | if (!rec) { | |
711 | rec = ocfs2_alloc_quota_recovery(); | |
712 | if (!rec) { | |
713 | status = -ENOMEM; | |
714 | mlog_errno(status); | |
715 | goto out_err; | |
716 | } | |
717 | OCFS2_SB(sb)->quota_rec = rec; | |
718 | } | |
9e33d69f | 719 | |
2205363d JK |
720 | status = ocfs2_recovery_load_quota(lqinode, ldinfo, type, |
721 | &rec->r_list[type]); | |
722 | if (status < 0) { | |
723 | mlog_errno(status); | |
724 | goto out_err; | |
725 | } | |
726 | } | |
727 | ||
728 | status = ocfs2_load_local_quota_bitmaps(lqinode, | |
9e33d69f JK |
729 | ldinfo, |
730 | &oinfo->dqi_chunk); | |
731 | if (status < 0) { | |
732 | mlog_errno(status); | |
733 | goto out_err; | |
734 | } | |
735 | ||
736 | /* Now mark quota file as used */ | |
737 | info->dqi_flags &= ~OLQF_CLEAN; | |
738 | status = ocfs2_modify_bh(lqinode, bh, olq_update_info, info); | |
739 | if (status < 0) { | |
740 | mlog_errno(status); | |
741 | goto out_err; | |
742 | } | |
743 | ||
b4c30de3 | 744 | mutex_lock(&sb_dqopt(sb)->dqio_mutex); |
9e33d69f JK |
745 | return 0; |
746 | out_err: | |
747 | if (oinfo) { | |
748 | iput(oinfo->dqi_gqinode); | |
749 | ocfs2_simple_drop_lockres(OCFS2_SB(sb), &oinfo->dqi_gqlock); | |
750 | ocfs2_lock_res_free(&oinfo->dqi_gqlock); | |
751 | brelse(oinfo->dqi_lqi_bh); | |
752 | if (locked) | |
753 | ocfs2_inode_unlock(lqinode, 1); | |
754 | ocfs2_release_local_quota_bitmaps(&oinfo->dqi_chunk); | |
755 | kfree(oinfo); | |
756 | } | |
757 | brelse(bh); | |
b4c30de3 | 758 | mutex_lock(&sb_dqopt(sb)->dqio_mutex); |
9e33d69f JK |
759 | return -1; |
760 | } | |
761 | ||
762 | /* Write local info to quota file */ | |
763 | static int ocfs2_local_write_info(struct super_block *sb, int type) | |
764 | { | |
765 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
766 | struct buffer_head *bh = ((struct ocfs2_mem_dqinfo *)info->dqi_priv) | |
767 | ->dqi_ibh; | |
768 | int status; | |
769 | ||
770 | status = ocfs2_modify_bh(sb_dqopt(sb)->files[type], bh, olq_update_info, | |
771 | info); | |
772 | if (status < 0) { | |
773 | mlog_errno(status); | |
774 | return -1; | |
775 | } | |
776 | ||
777 | return 0; | |
778 | } | |
779 | ||
780 | /* Release info from memory */ | |
781 | static int ocfs2_local_free_info(struct super_block *sb, int type) | |
782 | { | |
783 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
784 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
785 | struct ocfs2_quota_chunk *chunk; | |
786 | struct ocfs2_local_disk_chunk *dchunk; | |
787 | int mark_clean = 1, len; | |
788 | int status; | |
789 | ||
171bf93c MF |
790 | /* At this point we know there are no more dquots and thus |
791 | * even if there's some sync in the pdflush queue, it won't | |
792 | * find any dquots and return without doing anything */ | |
793 | cancel_delayed_work_sync(&oinfo->dqi_sync_work); | |
9e33d69f JK |
794 | iput(oinfo->dqi_gqinode); |
795 | ocfs2_simple_drop_lockres(OCFS2_SB(sb), &oinfo->dqi_gqlock); | |
796 | ocfs2_lock_res_free(&oinfo->dqi_gqlock); | |
797 | list_for_each_entry(chunk, &oinfo->dqi_chunk, qc_chunk) { | |
798 | dchunk = (struct ocfs2_local_disk_chunk *) | |
799 | (chunk->qc_headerbh->b_data); | |
800 | if (chunk->qc_num < oinfo->dqi_chunks - 1) { | |
801 | len = ol_chunk_entries(sb); | |
802 | } else { | |
803 | len = (oinfo->dqi_blocks - | |
804 | ol_quota_chunk_block(sb, chunk->qc_num) - 1) | |
805 | * ol_quota_entries_per_block(sb); | |
806 | } | |
807 | /* Not all entries free? Bug! */ | |
808 | if (le32_to_cpu(dchunk->dqc_free) != len) { | |
809 | mlog(ML_ERROR, "releasing quota file with used " | |
810 | "entries (type=%d)\n", type); | |
811 | mark_clean = 0; | |
812 | } | |
813 | } | |
814 | ocfs2_release_local_quota_bitmaps(&oinfo->dqi_chunk); | |
815 | ||
2205363d JK |
816 | /* dqonoff_mutex protects us against racing with recovery thread... */ |
817 | if (oinfo->dqi_rec) { | |
818 | ocfs2_free_quota_recovery(oinfo->dqi_rec); | |
819 | mark_clean = 0; | |
820 | } | |
821 | ||
9e33d69f JK |
822 | if (!mark_clean) |
823 | goto out; | |
824 | ||
825 | /* Mark local file as clean */ | |
826 | info->dqi_flags |= OLQF_CLEAN; | |
827 | status = ocfs2_modify_bh(sb_dqopt(sb)->files[type], | |
828 | oinfo->dqi_ibh, | |
829 | olq_update_info, | |
830 | info); | |
831 | if (status < 0) { | |
832 | mlog_errno(status); | |
833 | goto out; | |
834 | } | |
835 | ||
836 | out: | |
837 | ocfs2_inode_unlock(sb_dqopt(sb)->files[type], 1); | |
838 | brelse(oinfo->dqi_ibh); | |
839 | brelse(oinfo->dqi_lqi_bh); | |
840 | kfree(oinfo); | |
841 | return 0; | |
842 | } | |
843 | ||
844 | static void olq_set_dquot(struct buffer_head *bh, void *private) | |
845 | { | |
846 | struct ocfs2_dquot *od = private; | |
847 | struct ocfs2_local_disk_dqblk *dqblk; | |
848 | struct super_block *sb = od->dq_dquot.dq_sb; | |
849 | ||
850 | dqblk = (struct ocfs2_local_disk_dqblk *)(bh->b_data | |
851 | + ol_dqblk_block_offset(sb, od->dq_local_off)); | |
852 | ||
853 | dqblk->dqb_id = cpu_to_le64(od->dq_dquot.dq_id); | |
854 | spin_lock(&dq_data_lock); | |
855 | dqblk->dqb_spacemod = cpu_to_le64(od->dq_dquot.dq_dqb.dqb_curspace - | |
856 | od->dq_origspace); | |
857 | dqblk->dqb_inodemod = cpu_to_le64(od->dq_dquot.dq_dqb.dqb_curinodes - | |
858 | od->dq_originodes); | |
859 | spin_unlock(&dq_data_lock); | |
860 | mlog(0, "Writing local dquot %u space %lld inodes %lld\n", | |
9a2f3866 JK |
861 | od->dq_dquot.dq_id, (long long)le64_to_cpu(dqblk->dqb_spacemod), |
862 | (long long)le64_to_cpu(dqblk->dqb_inodemod)); | |
9e33d69f JK |
863 | } |
864 | ||
865 | /* Write dquot to local quota file */ | |
866 | static int ocfs2_local_write_dquot(struct dquot *dquot) | |
867 | { | |
868 | struct super_block *sb = dquot->dq_sb; | |
869 | struct ocfs2_dquot *od = OCFS2_DQUOT(dquot); | |
85eb8b73 | 870 | struct buffer_head *bh = NULL; |
9e33d69f JK |
871 | int status; |
872 | ||
85eb8b73 | 873 | status = ocfs2_read_quota_block(sb_dqopt(sb)->files[dquot->dq_type], |
9e33d69f | 874 | ol_dqblk_file_block(sb, od->dq_local_off), |
85eb8b73 JB |
875 | &bh); |
876 | if (status) { | |
9e33d69f JK |
877 | mlog_errno(status); |
878 | goto out; | |
879 | } | |
880 | status = ocfs2_modify_bh(sb_dqopt(sb)->files[dquot->dq_type], bh, | |
881 | olq_set_dquot, od); | |
882 | if (status < 0) { | |
883 | mlog_errno(status); | |
884 | goto out; | |
885 | } | |
886 | out: | |
887 | brelse(bh); | |
888 | return status; | |
889 | } | |
890 | ||
891 | /* Find free entry in local quota file */ | |
892 | static struct ocfs2_quota_chunk *ocfs2_find_free_entry(struct super_block *sb, | |
893 | int type, | |
894 | int *offset) | |
895 | { | |
896 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
897 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
898 | struct ocfs2_quota_chunk *chunk; | |
899 | struct ocfs2_local_disk_chunk *dchunk; | |
900 | int found = 0, len; | |
901 | ||
902 | list_for_each_entry(chunk, &oinfo->dqi_chunk, qc_chunk) { | |
903 | dchunk = (struct ocfs2_local_disk_chunk *) | |
904 | chunk->qc_headerbh->b_data; | |
905 | if (le32_to_cpu(dchunk->dqc_free) > 0) { | |
906 | found = 1; | |
907 | break; | |
908 | } | |
909 | } | |
910 | if (!found) | |
911 | return NULL; | |
912 | ||
913 | if (chunk->qc_num < oinfo->dqi_chunks - 1) { | |
914 | len = ol_chunk_entries(sb); | |
915 | } else { | |
916 | len = (oinfo->dqi_blocks - | |
917 | ol_quota_chunk_block(sb, chunk->qc_num) - 1) | |
918 | * ol_quota_entries_per_block(sb); | |
919 | } | |
920 | ||
921 | found = ocfs2_find_next_zero_bit(dchunk->dqc_bitmap, len, 0); | |
922 | /* We failed? */ | |
923 | if (found == len) { | |
924 | mlog(ML_ERROR, "Did not find empty entry in chunk %d with %u" | |
925 | " entries free (type=%d)\n", chunk->qc_num, | |
926 | le32_to_cpu(dchunk->dqc_free), type); | |
927 | return ERR_PTR(-EIO); | |
928 | } | |
929 | *offset = found; | |
930 | return chunk; | |
931 | } | |
932 | ||
933 | /* Add new chunk to the local quota file */ | |
934 | static struct ocfs2_quota_chunk *ocfs2_local_quota_add_chunk( | |
935 | struct super_block *sb, | |
936 | int type, | |
937 | int *offset) | |
938 | { | |
939 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
940 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
941 | struct inode *lqinode = sb_dqopt(sb)->files[type]; | |
942 | struct ocfs2_quota_chunk *chunk = NULL; | |
943 | struct ocfs2_local_disk_chunk *dchunk; | |
944 | int status; | |
945 | handle_t *handle; | |
0e7f387b | 946 | struct buffer_head *bh = NULL, *dbh = NULL; |
9e33d69f JK |
947 | u64 p_blkno; |
948 | ||
949 | /* We are protected by dqio_sem so no locking needed */ | |
950 | status = ocfs2_extend_no_holes(lqinode, | |
951 | lqinode->i_size + 2 * sb->s_blocksize, | |
952 | lqinode->i_size); | |
953 | if (status < 0) { | |
954 | mlog_errno(status); | |
955 | goto out; | |
956 | } | |
957 | status = ocfs2_simple_size_update(lqinode, oinfo->dqi_lqi_bh, | |
958 | lqinode->i_size + 2 * sb->s_blocksize); | |
959 | if (status < 0) { | |
960 | mlog_errno(status); | |
961 | goto out; | |
962 | } | |
963 | ||
964 | chunk = kmem_cache_alloc(ocfs2_qf_chunk_cachep, GFP_NOFS); | |
965 | if (!chunk) { | |
966 | status = -ENOMEM; | |
967 | mlog_errno(status); | |
968 | goto out; | |
969 | } | |
0584974a JK |
970 | /* Local quota info and two new blocks we initialize */ |
971 | handle = ocfs2_start_trans(OCFS2_SB(sb), | |
972 | OCFS2_LOCAL_QINFO_WRITE_CREDITS + | |
973 | 2 * OCFS2_QUOTA_BLOCK_UPDATE_CREDITS); | |
0e7f387b JK |
974 | if (IS_ERR(handle)) { |
975 | status = PTR_ERR(handle); | |
976 | mlog_errno(status); | |
977 | goto out; | |
978 | } | |
9e33d69f | 979 | |
0e7f387b | 980 | /* Initialize chunk header */ |
9e33d69f JK |
981 | down_read(&OCFS2_I(lqinode)->ip_alloc_sem); |
982 | status = ocfs2_extent_map_get_blocks(lqinode, oinfo->dqi_blocks, | |
983 | &p_blkno, NULL, NULL); | |
984 | up_read(&OCFS2_I(lqinode)->ip_alloc_sem); | |
985 | if (status < 0) { | |
986 | mlog_errno(status); | |
0e7f387b | 987 | goto out_trans; |
9e33d69f JK |
988 | } |
989 | bh = sb_getblk(sb, p_blkno); | |
990 | if (!bh) { | |
991 | status = -ENOMEM; | |
992 | mlog_errno(status); | |
0e7f387b | 993 | goto out_trans; |
9e33d69f JK |
994 | } |
995 | dchunk = (struct ocfs2_local_disk_chunk *)bh->b_data; | |
0e7f387b | 996 | ocfs2_set_new_buffer_uptodate(lqinode, bh); |
13723d00 | 997 | status = ocfs2_journal_access_dq(handle, lqinode, bh, |
0e7f387b | 998 | OCFS2_JOURNAL_ACCESS_CREATE); |
9e33d69f JK |
999 | if (status < 0) { |
1000 | mlog_errno(status); | |
1001 | goto out_trans; | |
1002 | } | |
1003 | lock_buffer(bh); | |
df32b334 | 1004 | dchunk->dqc_free = cpu_to_le32(ol_quota_entries_per_block(sb)); |
9e33d69f JK |
1005 | memset(dchunk->dqc_bitmap, 0, |
1006 | sb->s_blocksize - sizeof(struct ocfs2_local_disk_chunk) - | |
1007 | OCFS2_QBLK_RESERVED_SPACE); | |
9e33d69f JK |
1008 | unlock_buffer(bh); |
1009 | status = ocfs2_journal_dirty(handle, bh); | |
1010 | if (status < 0) { | |
1011 | mlog_errno(status); | |
1012 | goto out_trans; | |
1013 | } | |
1014 | ||
0e7f387b JK |
1015 | /* Initialize new block with structures */ |
1016 | down_read(&OCFS2_I(lqinode)->ip_alloc_sem); | |
1017 | status = ocfs2_extent_map_get_blocks(lqinode, oinfo->dqi_blocks + 1, | |
1018 | &p_blkno, NULL, NULL); | |
1019 | up_read(&OCFS2_I(lqinode)->ip_alloc_sem); | |
1020 | if (status < 0) { | |
1021 | mlog_errno(status); | |
1022 | goto out_trans; | |
1023 | } | |
1024 | dbh = sb_getblk(sb, p_blkno); | |
1025 | if (!dbh) { | |
1026 | status = -ENOMEM; | |
1027 | mlog_errno(status); | |
1028 | goto out_trans; | |
1029 | } | |
1030 | ocfs2_set_new_buffer_uptodate(lqinode, dbh); | |
1031 | status = ocfs2_journal_access_dq(handle, lqinode, dbh, | |
1032 | OCFS2_JOURNAL_ACCESS_CREATE); | |
1033 | if (status < 0) { | |
1034 | mlog_errno(status); | |
1035 | goto out_trans; | |
1036 | } | |
1037 | lock_buffer(dbh); | |
1038 | memset(dbh->b_data, 0, sb->s_blocksize - OCFS2_QBLK_RESERVED_SPACE); | |
1039 | unlock_buffer(dbh); | |
1040 | status = ocfs2_journal_dirty(handle, dbh); | |
1041 | if (status < 0) { | |
1042 | mlog_errno(status); | |
1043 | goto out_trans; | |
1044 | } | |
1045 | ||
1046 | /* Update local quotafile info */ | |
9e33d69f JK |
1047 | oinfo->dqi_blocks += 2; |
1048 | oinfo->dqi_chunks++; | |
1049 | status = ocfs2_local_write_info(sb, type); | |
1050 | if (status < 0) { | |
1051 | mlog_errno(status); | |
1052 | goto out_trans; | |
1053 | } | |
1054 | status = ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1055 | if (status < 0) { | |
1056 | mlog_errno(status); | |
1057 | goto out; | |
1058 | } | |
1059 | ||
1060 | list_add_tail(&chunk->qc_chunk, &oinfo->dqi_chunk); | |
1061 | chunk->qc_num = list_entry(chunk->qc_chunk.prev, | |
1062 | struct ocfs2_quota_chunk, | |
1063 | qc_chunk)->qc_num + 1; | |
1064 | chunk->qc_headerbh = bh; | |
1065 | *offset = 0; | |
1066 | return chunk; | |
1067 | out_trans: | |
1068 | ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1069 | out: | |
1070 | brelse(bh); | |
0e7f387b | 1071 | brelse(dbh); |
9e33d69f JK |
1072 | kmem_cache_free(ocfs2_qf_chunk_cachep, chunk); |
1073 | return ERR_PTR(status); | |
1074 | } | |
1075 | ||
1076 | /* Find free entry in local quota file */ | |
1077 | static struct ocfs2_quota_chunk *ocfs2_extend_local_quota_file( | |
1078 | struct super_block *sb, | |
1079 | int type, | |
1080 | int *offset) | |
1081 | { | |
1082 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
1083 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
1084 | struct ocfs2_quota_chunk *chunk; | |
1085 | struct inode *lqinode = sb_dqopt(sb)->files[type]; | |
1086 | struct ocfs2_local_disk_chunk *dchunk; | |
1087 | int epb = ol_quota_entries_per_block(sb); | |
1088 | unsigned int chunk_blocks; | |
0e7f387b JK |
1089 | struct buffer_head *bh; |
1090 | u64 p_blkno; | |
9e33d69f JK |
1091 | int status; |
1092 | handle_t *handle; | |
1093 | ||
1094 | if (list_empty(&oinfo->dqi_chunk)) | |
1095 | return ocfs2_local_quota_add_chunk(sb, type, offset); | |
1096 | /* Is the last chunk full? */ | |
1097 | chunk = list_entry(oinfo->dqi_chunk.prev, | |
1098 | struct ocfs2_quota_chunk, qc_chunk); | |
1099 | chunk_blocks = oinfo->dqi_blocks - | |
1100 | ol_quota_chunk_block(sb, chunk->qc_num) - 1; | |
1101 | if (ol_chunk_blocks(sb) == chunk_blocks) | |
1102 | return ocfs2_local_quota_add_chunk(sb, type, offset); | |
1103 | ||
1104 | /* We are protected by dqio_sem so no locking needed */ | |
1105 | status = ocfs2_extend_no_holes(lqinode, | |
1106 | lqinode->i_size + sb->s_blocksize, | |
1107 | lqinode->i_size); | |
1108 | if (status < 0) { | |
1109 | mlog_errno(status); | |
1110 | goto out; | |
1111 | } | |
1112 | status = ocfs2_simple_size_update(lqinode, oinfo->dqi_lqi_bh, | |
1113 | lqinode->i_size + sb->s_blocksize); | |
1114 | if (status < 0) { | |
1115 | mlog_errno(status); | |
1116 | goto out; | |
1117 | } | |
0e7f387b JK |
1118 | |
1119 | /* Get buffer from the just added block */ | |
1120 | down_read(&OCFS2_I(lqinode)->ip_alloc_sem); | |
1121 | status = ocfs2_extent_map_get_blocks(lqinode, oinfo->dqi_blocks, | |
1122 | &p_blkno, NULL, NULL); | |
1123 | up_read(&OCFS2_I(lqinode)->ip_alloc_sem); | |
1124 | if (status < 0) { | |
1125 | mlog_errno(status); | |
1126 | goto out; | |
1127 | } | |
1128 | bh = sb_getblk(sb, p_blkno); | |
1129 | if (!bh) { | |
1130 | status = -ENOMEM; | |
1131 | mlog_errno(status); | |
1132 | goto out; | |
1133 | } | |
1134 | ocfs2_set_new_buffer_uptodate(lqinode, bh); | |
1135 | ||
0584974a JK |
1136 | /* Local quota info, chunk header and the new block we initialize */ |
1137 | handle = ocfs2_start_trans(OCFS2_SB(sb), | |
1138 | OCFS2_LOCAL_QINFO_WRITE_CREDITS + | |
1139 | 2 * OCFS2_QUOTA_BLOCK_UPDATE_CREDITS); | |
9e33d69f JK |
1140 | if (IS_ERR(handle)) { |
1141 | status = PTR_ERR(handle); | |
1142 | mlog_errno(status); | |
1143 | goto out; | |
1144 | } | |
0e7f387b JK |
1145 | /* Zero created block */ |
1146 | status = ocfs2_journal_access_dq(handle, lqinode, bh, | |
1147 | OCFS2_JOURNAL_ACCESS_CREATE); | |
1148 | if (status < 0) { | |
1149 | mlog_errno(status); | |
1150 | goto out_trans; | |
1151 | } | |
1152 | lock_buffer(bh); | |
1153 | memset(bh->b_data, 0, sb->s_blocksize); | |
1154 | unlock_buffer(bh); | |
1155 | status = ocfs2_journal_dirty(handle, bh); | |
1156 | if (status < 0) { | |
1157 | mlog_errno(status); | |
1158 | goto out_trans; | |
1159 | } | |
1160 | /* Update chunk header */ | |
13723d00 | 1161 | status = ocfs2_journal_access_dq(handle, lqinode, chunk->qc_headerbh, |
9e33d69f JK |
1162 | OCFS2_JOURNAL_ACCESS_WRITE); |
1163 | if (status < 0) { | |
1164 | mlog_errno(status); | |
1165 | goto out_trans; | |
1166 | } | |
1167 | ||
1168 | dchunk = (struct ocfs2_local_disk_chunk *)chunk->qc_headerbh->b_data; | |
1169 | lock_buffer(chunk->qc_headerbh); | |
1170 | le32_add_cpu(&dchunk->dqc_free, ol_quota_entries_per_block(sb)); | |
1171 | unlock_buffer(chunk->qc_headerbh); | |
1172 | status = ocfs2_journal_dirty(handle, chunk->qc_headerbh); | |
1173 | if (status < 0) { | |
1174 | mlog_errno(status); | |
1175 | goto out_trans; | |
1176 | } | |
0e7f387b | 1177 | /* Update file header */ |
9e33d69f JK |
1178 | oinfo->dqi_blocks++; |
1179 | status = ocfs2_local_write_info(sb, type); | |
1180 | if (status < 0) { | |
1181 | mlog_errno(status); | |
1182 | goto out_trans; | |
1183 | } | |
1184 | ||
1185 | status = ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1186 | if (status < 0) { | |
1187 | mlog_errno(status); | |
1188 | goto out; | |
1189 | } | |
1190 | *offset = chunk_blocks * epb; | |
1191 | return chunk; | |
1192 | out_trans: | |
1193 | ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1194 | out: | |
1195 | return ERR_PTR(status); | |
1196 | } | |
1197 | ||
df32b334 | 1198 | static void olq_alloc_dquot(struct buffer_head *bh, void *private) |
9e33d69f JK |
1199 | { |
1200 | int *offset = private; | |
1201 | struct ocfs2_local_disk_chunk *dchunk; | |
1202 | ||
1203 | dchunk = (struct ocfs2_local_disk_chunk *)bh->b_data; | |
1204 | ocfs2_set_bit(*offset, dchunk->dqc_bitmap); | |
1205 | le32_add_cpu(&dchunk->dqc_free, -1); | |
1206 | } | |
1207 | ||
1208 | /* Create dquot in the local file for given id */ | |
1209 | static int ocfs2_create_local_dquot(struct dquot *dquot) | |
1210 | { | |
1211 | struct super_block *sb = dquot->dq_sb; | |
1212 | int type = dquot->dq_type; | |
1213 | struct inode *lqinode = sb_dqopt(sb)->files[type]; | |
1214 | struct ocfs2_quota_chunk *chunk; | |
1215 | struct ocfs2_dquot *od = OCFS2_DQUOT(dquot); | |
1216 | int offset; | |
1217 | int status; | |
1218 | ||
1219 | chunk = ocfs2_find_free_entry(sb, type, &offset); | |
1220 | if (!chunk) { | |
1221 | chunk = ocfs2_extend_local_quota_file(sb, type, &offset); | |
1222 | if (IS_ERR(chunk)) | |
1223 | return PTR_ERR(chunk); | |
1224 | } else if (IS_ERR(chunk)) { | |
1225 | return PTR_ERR(chunk); | |
1226 | } | |
1227 | od->dq_local_off = ol_dqblk_off(sb, chunk->qc_num, offset); | |
1228 | od->dq_chunk = chunk; | |
1229 | ||
1230 | /* Initialize dquot structure on disk */ | |
1231 | status = ocfs2_local_write_dquot(dquot); | |
1232 | if (status < 0) { | |
1233 | mlog_errno(status); | |
1234 | goto out; | |
1235 | } | |
1236 | ||
1237 | /* Mark structure as allocated */ | |
1238 | status = ocfs2_modify_bh(lqinode, chunk->qc_headerbh, olq_alloc_dquot, | |
1239 | &offset); | |
1240 | if (status < 0) { | |
1241 | mlog_errno(status); | |
1242 | goto out; | |
1243 | } | |
1244 | out: | |
1245 | return status; | |
1246 | } | |
1247 | ||
1248 | /* Create entry in local file for dquot, load data from the global file */ | |
1249 | static int ocfs2_local_read_dquot(struct dquot *dquot) | |
1250 | { | |
1251 | int status; | |
1252 | ||
1253 | mlog_entry("id=%u, type=%d\n", dquot->dq_id, dquot->dq_type); | |
1254 | ||
1255 | status = ocfs2_global_read_dquot(dquot); | |
1256 | if (status < 0) { | |
1257 | mlog_errno(status); | |
1258 | goto out_err; | |
1259 | } | |
1260 | ||
1261 | /* Now create entry in the local quota file */ | |
1262 | status = ocfs2_create_local_dquot(dquot); | |
1263 | if (status < 0) { | |
1264 | mlog_errno(status); | |
1265 | goto out_err; | |
1266 | } | |
1267 | mlog_exit(0); | |
1268 | return 0; | |
1269 | out_err: | |
1270 | mlog_exit(status); | |
1271 | return status; | |
1272 | } | |
1273 | ||
1274 | /* Release dquot structure from local quota file. ocfs2_release_dquot() has | |
1275 | * already started a transaction and obtained exclusive lock for global | |
1276 | * quota file. */ | |
1277 | static int ocfs2_local_release_dquot(struct dquot *dquot) | |
1278 | { | |
1279 | int status; | |
1280 | int type = dquot->dq_type; | |
1281 | struct ocfs2_dquot *od = OCFS2_DQUOT(dquot); | |
1282 | struct super_block *sb = dquot->dq_sb; | |
1283 | struct ocfs2_local_disk_chunk *dchunk; | |
1284 | int offset; | |
1285 | handle_t *handle = journal_current_handle(); | |
1286 | ||
1287 | BUG_ON(!handle); | |
1288 | /* First write all local changes to global file */ | |
1289 | status = ocfs2_global_release_dquot(dquot); | |
1290 | if (status < 0) { | |
1291 | mlog_errno(status); | |
1292 | goto out; | |
1293 | } | |
1294 | ||
13723d00 | 1295 | status = ocfs2_journal_access_dq(handle, sb_dqopt(sb)->files[type], |
9e33d69f JK |
1296 | od->dq_chunk->qc_headerbh, OCFS2_JOURNAL_ACCESS_WRITE); |
1297 | if (status < 0) { | |
1298 | mlog_errno(status); | |
1299 | goto out; | |
1300 | } | |
1301 | offset = ol_dqblk_chunk_off(sb, od->dq_chunk->qc_num, | |
1302 | od->dq_local_off); | |
1303 | dchunk = (struct ocfs2_local_disk_chunk *) | |
1304 | (od->dq_chunk->qc_headerbh->b_data); | |
1305 | /* Mark structure as freed */ | |
1306 | lock_buffer(od->dq_chunk->qc_headerbh); | |
1307 | ocfs2_clear_bit(offset, dchunk->dqc_bitmap); | |
1308 | le32_add_cpu(&dchunk->dqc_free, 1); | |
1309 | unlock_buffer(od->dq_chunk->qc_headerbh); | |
1310 | status = ocfs2_journal_dirty(handle, od->dq_chunk->qc_headerbh); | |
1311 | if (status < 0) { | |
1312 | mlog_errno(status); | |
1313 | goto out; | |
1314 | } | |
1315 | status = 0; | |
1316 | out: | |
1317 | /* Clear the read bit so that next time someone uses this | |
1318 | * dquot he reads fresh info from disk and allocates local | |
1319 | * dquot structure */ | |
1320 | clear_bit(DQ_READ_B, &dquot->dq_flags); | |
1321 | return status; | |
1322 | } | |
1323 | ||
1324 | static struct quota_format_ops ocfs2_format_ops = { | |
1325 | .check_quota_file = ocfs2_local_check_quota_file, | |
1326 | .read_file_info = ocfs2_local_read_info, | |
1327 | .write_file_info = ocfs2_global_write_info, | |
1328 | .free_file_info = ocfs2_local_free_info, | |
1329 | .read_dqblk = ocfs2_local_read_dquot, | |
1330 | .commit_dqblk = ocfs2_local_write_dquot, | |
1331 | .release_dqblk = ocfs2_local_release_dquot, | |
1332 | }; | |
1333 | ||
1334 | struct quota_format_type ocfs2_quota_format = { | |
1335 | .qf_fmt_id = QFMT_OCFS2, | |
1336 | .qf_ops = &ocfs2_format_ops, | |
1337 | .qf_owner = THIS_MODULE | |
1338 | }; |