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 | } | |
0cf2f763 | 111 | status = ocfs2_journal_access_dq(handle, INODE_CACHE(inode), bh, |
13723d00 | 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 */ | |
0cf2f763 JB |
513 | status = ocfs2_journal_access_dq(handle, |
514 | INODE_CACHE(lqinode), | |
2205363d JK |
515 | qbh, OCFS2_JOURNAL_ACCESS_WRITE); |
516 | if (status < 0) { | |
517 | mlog_errno(status); | |
518 | goto out_commit; | |
519 | } | |
520 | lock_buffer(qbh); | |
521 | WARN_ON(!ocfs2_test_bit(bit, dchunk->dqc_bitmap)); | |
522 | ocfs2_clear_bit(bit, dchunk->dqc_bitmap); | |
523 | le32_add_cpu(&dchunk->dqc_free, 1); | |
524 | unlock_buffer(qbh); | |
525 | status = ocfs2_journal_dirty(handle, qbh); | |
526 | if (status < 0) | |
527 | mlog_errno(status); | |
528 | out_commit: | |
529 | mutex_unlock(&sb_dqopt(sb)->dqio_mutex); | |
530 | ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
80d73f15 JK |
531 | out_drop_lock: |
532 | ocfs2_unlock_global_qf(oinfo, 1); | |
2205363d JK |
533 | out_put_dquot: |
534 | dqput(dquot); | |
535 | out_put_bh: | |
536 | brelse(qbh); | |
537 | if (status < 0) | |
538 | break; | |
539 | } | |
540 | brelse(hbh); | |
541 | list_del(&rchunk->rc_list); | |
542 | kfree(rchunk->rc_bitmap); | |
543 | kfree(rchunk); | |
544 | if (status < 0) | |
545 | break; | |
546 | } | |
2205363d JK |
547 | if (status < 0) |
548 | free_recovery_list(&(rec->r_list[type])); | |
549 | mlog_exit(status); | |
550 | return status; | |
551 | } | |
552 | ||
553 | /* Recover local quota files for given node different from us */ | |
554 | int ocfs2_finish_quota_recovery(struct ocfs2_super *osb, | |
555 | struct ocfs2_quota_recovery *rec, | |
556 | int slot_num) | |
557 | { | |
558 | unsigned int ino[MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE, | |
559 | LOCAL_GROUP_QUOTA_SYSTEM_INODE }; | |
560 | struct super_block *sb = osb->sb; | |
561 | struct ocfs2_local_disk_dqinfo *ldinfo; | |
562 | struct buffer_head *bh; | |
563 | handle_t *handle; | |
564 | int type; | |
565 | int status = 0; | |
566 | struct inode *lqinode; | |
567 | unsigned int flags; | |
568 | ||
569 | mlog(ML_NOTICE, "Finishing quota recovery in slot %u\n", slot_num); | |
570 | mutex_lock(&sb_dqopt(sb)->dqonoff_mutex); | |
571 | for (type = 0; type < MAXQUOTAS; type++) { | |
572 | if (list_empty(&(rec->r_list[type]))) | |
573 | continue; | |
574 | mlog(0, "Recovering quota in slot %d\n", slot_num); | |
575 | lqinode = ocfs2_get_system_file_inode(osb, ino[type], slot_num); | |
576 | if (!lqinode) { | |
577 | status = -ENOENT; | |
578 | goto out; | |
579 | } | |
580 | status = ocfs2_inode_lock_full(lqinode, NULL, 1, | |
581 | OCFS2_META_LOCK_NOQUEUE); | |
582 | /* Someone else is holding the lock? Then he must be | |
583 | * doing the recovery. Just skip the file... */ | |
584 | if (status == -EAGAIN) { | |
585 | mlog(ML_NOTICE, "skipping quota recovery for slot %d " | |
586 | "because quota file is locked.\n", slot_num); | |
587 | status = 0; | |
588 | goto out_put; | |
589 | } else if (status < 0) { | |
590 | mlog_errno(status); | |
591 | goto out_put; | |
592 | } | |
593 | /* Now read local header */ | |
85eb8b73 JB |
594 | bh = NULL; |
595 | status = ocfs2_read_quota_block(lqinode, 0, &bh); | |
596 | if (status) { | |
2205363d JK |
597 | mlog_errno(status); |
598 | mlog(ML_ERROR, "failed to read quota file info header " | |
599 | "(slot=%d type=%d)\n", slot_num, type); | |
600 | goto out_lock; | |
601 | } | |
602 | ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + | |
603 | OCFS2_LOCAL_INFO_OFF); | |
604 | /* Is recovery still needed? */ | |
605 | flags = le32_to_cpu(ldinfo->dqi_flags); | |
606 | if (!(flags & OLQF_CLEAN)) | |
607 | status = ocfs2_recover_local_quota_file(lqinode, | |
608 | type, | |
609 | rec); | |
610 | /* We don't want to mark file as clean when it is actually | |
611 | * active */ | |
612 | if (slot_num == osb->slot_num) | |
613 | goto out_bh; | |
614 | /* Mark quota file as clean if we are recovering quota file of | |
615 | * some other node. */ | |
0584974a JK |
616 | handle = ocfs2_start_trans(osb, |
617 | OCFS2_LOCAL_QINFO_WRITE_CREDITS); | |
2205363d JK |
618 | if (IS_ERR(handle)) { |
619 | status = PTR_ERR(handle); | |
620 | mlog_errno(status); | |
621 | goto out_bh; | |
622 | } | |
0cf2f763 JB |
623 | status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), |
624 | bh, | |
13723d00 | 625 | OCFS2_JOURNAL_ACCESS_WRITE); |
2205363d JK |
626 | if (status < 0) { |
627 | mlog_errno(status); | |
628 | goto out_trans; | |
629 | } | |
630 | lock_buffer(bh); | |
631 | ldinfo->dqi_flags = cpu_to_le32(flags | OLQF_CLEAN); | |
632 | unlock_buffer(bh); | |
633 | status = ocfs2_journal_dirty(handle, bh); | |
634 | if (status < 0) | |
635 | mlog_errno(status); | |
636 | out_trans: | |
637 | ocfs2_commit_trans(osb, handle); | |
638 | out_bh: | |
639 | brelse(bh); | |
640 | out_lock: | |
641 | ocfs2_inode_unlock(lqinode, 1); | |
642 | out_put: | |
643 | iput(lqinode); | |
644 | if (status < 0) | |
645 | break; | |
646 | } | |
647 | out: | |
648 | mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex); | |
649 | kfree(rec); | |
650 | return status; | |
651 | } | |
652 | ||
9e33d69f JK |
653 | /* Read information header from quota file */ |
654 | static int ocfs2_local_read_info(struct super_block *sb, int type) | |
655 | { | |
656 | struct ocfs2_local_disk_dqinfo *ldinfo; | |
657 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
658 | struct ocfs2_mem_dqinfo *oinfo; | |
659 | struct inode *lqinode = sb_dqopt(sb)->files[type]; | |
660 | int status; | |
661 | struct buffer_head *bh = NULL; | |
2205363d | 662 | struct ocfs2_quota_recovery *rec; |
9e33d69f JK |
663 | int locked = 0; |
664 | ||
b4c30de3 JK |
665 | /* We don't need the lock and we have to acquire quota file locks |
666 | * which will later depend on this lock */ | |
667 | mutex_unlock(&sb_dqopt(sb)->dqio_mutex); | |
9e33d69f JK |
668 | info->dqi_maxblimit = 0x7fffffffffffffffLL; |
669 | info->dqi_maxilimit = 0x7fffffffffffffffLL; | |
670 | oinfo = kmalloc(sizeof(struct ocfs2_mem_dqinfo), GFP_NOFS); | |
671 | if (!oinfo) { | |
672 | mlog(ML_ERROR, "failed to allocate memory for ocfs2 quota" | |
673 | " info."); | |
674 | goto out_err; | |
675 | } | |
676 | info->dqi_priv = oinfo; | |
677 | oinfo->dqi_type = type; | |
678 | INIT_LIST_HEAD(&oinfo->dqi_chunk); | |
2205363d | 679 | oinfo->dqi_rec = NULL; |
9e33d69f JK |
680 | oinfo->dqi_lqi_bh = NULL; |
681 | oinfo->dqi_ibh = NULL; | |
682 | ||
683 | status = ocfs2_global_read_info(sb, type); | |
684 | if (status < 0) | |
685 | goto out_err; | |
686 | ||
687 | status = ocfs2_inode_lock(lqinode, &oinfo->dqi_lqi_bh, 1); | |
688 | if (status < 0) { | |
689 | mlog_errno(status); | |
690 | goto out_err; | |
691 | } | |
692 | locked = 1; | |
693 | ||
694 | /* Now read local header */ | |
85eb8b73 JB |
695 | status = ocfs2_read_quota_block(lqinode, 0, &bh); |
696 | if (status) { | |
9e33d69f JK |
697 | mlog_errno(status); |
698 | mlog(ML_ERROR, "failed to read quota file info header " | |
699 | "(type=%d)\n", type); | |
700 | goto out_err; | |
701 | } | |
702 | ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + | |
703 | OCFS2_LOCAL_INFO_OFF); | |
704 | info->dqi_flags = le32_to_cpu(ldinfo->dqi_flags); | |
705 | oinfo->dqi_chunks = le32_to_cpu(ldinfo->dqi_chunks); | |
706 | oinfo->dqi_blocks = le32_to_cpu(ldinfo->dqi_blocks); | |
707 | oinfo->dqi_ibh = bh; | |
708 | ||
709 | /* We crashed when using local quota file? */ | |
2205363d JK |
710 | if (!(info->dqi_flags & OLQF_CLEAN)) { |
711 | rec = OCFS2_SB(sb)->quota_rec; | |
712 | if (!rec) { | |
713 | rec = ocfs2_alloc_quota_recovery(); | |
714 | if (!rec) { | |
715 | status = -ENOMEM; | |
716 | mlog_errno(status); | |
717 | goto out_err; | |
718 | } | |
719 | OCFS2_SB(sb)->quota_rec = rec; | |
720 | } | |
9e33d69f | 721 | |
2205363d JK |
722 | status = ocfs2_recovery_load_quota(lqinode, ldinfo, type, |
723 | &rec->r_list[type]); | |
724 | if (status < 0) { | |
725 | mlog_errno(status); | |
726 | goto out_err; | |
727 | } | |
728 | } | |
729 | ||
730 | status = ocfs2_load_local_quota_bitmaps(lqinode, | |
9e33d69f JK |
731 | ldinfo, |
732 | &oinfo->dqi_chunk); | |
733 | if (status < 0) { | |
734 | mlog_errno(status); | |
735 | goto out_err; | |
736 | } | |
737 | ||
738 | /* Now mark quota file as used */ | |
739 | info->dqi_flags &= ~OLQF_CLEAN; | |
740 | status = ocfs2_modify_bh(lqinode, bh, olq_update_info, info); | |
741 | if (status < 0) { | |
742 | mlog_errno(status); | |
743 | goto out_err; | |
744 | } | |
745 | ||
b4c30de3 | 746 | mutex_lock(&sb_dqopt(sb)->dqio_mutex); |
9e33d69f JK |
747 | return 0; |
748 | out_err: | |
749 | if (oinfo) { | |
750 | iput(oinfo->dqi_gqinode); | |
751 | ocfs2_simple_drop_lockres(OCFS2_SB(sb), &oinfo->dqi_gqlock); | |
752 | ocfs2_lock_res_free(&oinfo->dqi_gqlock); | |
753 | brelse(oinfo->dqi_lqi_bh); | |
754 | if (locked) | |
755 | ocfs2_inode_unlock(lqinode, 1); | |
756 | ocfs2_release_local_quota_bitmaps(&oinfo->dqi_chunk); | |
757 | kfree(oinfo); | |
758 | } | |
759 | brelse(bh); | |
b4c30de3 | 760 | mutex_lock(&sb_dqopt(sb)->dqio_mutex); |
9e33d69f JK |
761 | return -1; |
762 | } | |
763 | ||
764 | /* Write local info to quota file */ | |
765 | static int ocfs2_local_write_info(struct super_block *sb, int type) | |
766 | { | |
767 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
768 | struct buffer_head *bh = ((struct ocfs2_mem_dqinfo *)info->dqi_priv) | |
769 | ->dqi_ibh; | |
770 | int status; | |
771 | ||
772 | status = ocfs2_modify_bh(sb_dqopt(sb)->files[type], bh, olq_update_info, | |
773 | info); | |
774 | if (status < 0) { | |
775 | mlog_errno(status); | |
776 | return -1; | |
777 | } | |
778 | ||
779 | return 0; | |
780 | } | |
781 | ||
782 | /* Release info from memory */ | |
783 | static int ocfs2_local_free_info(struct super_block *sb, int type) | |
784 | { | |
785 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
786 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
787 | struct ocfs2_quota_chunk *chunk; | |
788 | struct ocfs2_local_disk_chunk *dchunk; | |
789 | int mark_clean = 1, len; | |
790 | int status; | |
791 | ||
171bf93c MF |
792 | /* At this point we know there are no more dquots and thus |
793 | * even if there's some sync in the pdflush queue, it won't | |
794 | * find any dquots and return without doing anything */ | |
795 | cancel_delayed_work_sync(&oinfo->dqi_sync_work); | |
9e33d69f JK |
796 | iput(oinfo->dqi_gqinode); |
797 | ocfs2_simple_drop_lockres(OCFS2_SB(sb), &oinfo->dqi_gqlock); | |
798 | ocfs2_lock_res_free(&oinfo->dqi_gqlock); | |
799 | list_for_each_entry(chunk, &oinfo->dqi_chunk, qc_chunk) { | |
800 | dchunk = (struct ocfs2_local_disk_chunk *) | |
801 | (chunk->qc_headerbh->b_data); | |
802 | if (chunk->qc_num < oinfo->dqi_chunks - 1) { | |
803 | len = ol_chunk_entries(sb); | |
804 | } else { | |
805 | len = (oinfo->dqi_blocks - | |
806 | ol_quota_chunk_block(sb, chunk->qc_num) - 1) | |
807 | * ol_quota_entries_per_block(sb); | |
808 | } | |
809 | /* Not all entries free? Bug! */ | |
810 | if (le32_to_cpu(dchunk->dqc_free) != len) { | |
811 | mlog(ML_ERROR, "releasing quota file with used " | |
812 | "entries (type=%d)\n", type); | |
813 | mark_clean = 0; | |
814 | } | |
815 | } | |
816 | ocfs2_release_local_quota_bitmaps(&oinfo->dqi_chunk); | |
817 | ||
2205363d JK |
818 | /* dqonoff_mutex protects us against racing with recovery thread... */ |
819 | if (oinfo->dqi_rec) { | |
820 | ocfs2_free_quota_recovery(oinfo->dqi_rec); | |
821 | mark_clean = 0; | |
822 | } | |
823 | ||
9e33d69f JK |
824 | if (!mark_clean) |
825 | goto out; | |
826 | ||
827 | /* Mark local file as clean */ | |
828 | info->dqi_flags |= OLQF_CLEAN; | |
829 | status = ocfs2_modify_bh(sb_dqopt(sb)->files[type], | |
830 | oinfo->dqi_ibh, | |
831 | olq_update_info, | |
832 | info); | |
833 | if (status < 0) { | |
834 | mlog_errno(status); | |
835 | goto out; | |
836 | } | |
837 | ||
838 | out: | |
839 | ocfs2_inode_unlock(sb_dqopt(sb)->files[type], 1); | |
840 | brelse(oinfo->dqi_ibh); | |
841 | brelse(oinfo->dqi_lqi_bh); | |
842 | kfree(oinfo); | |
843 | return 0; | |
844 | } | |
845 | ||
846 | static void olq_set_dquot(struct buffer_head *bh, void *private) | |
847 | { | |
848 | struct ocfs2_dquot *od = private; | |
849 | struct ocfs2_local_disk_dqblk *dqblk; | |
850 | struct super_block *sb = od->dq_dquot.dq_sb; | |
851 | ||
852 | dqblk = (struct ocfs2_local_disk_dqblk *)(bh->b_data | |
853 | + ol_dqblk_block_offset(sb, od->dq_local_off)); | |
854 | ||
855 | dqblk->dqb_id = cpu_to_le64(od->dq_dquot.dq_id); | |
856 | spin_lock(&dq_data_lock); | |
857 | dqblk->dqb_spacemod = cpu_to_le64(od->dq_dquot.dq_dqb.dqb_curspace - | |
858 | od->dq_origspace); | |
859 | dqblk->dqb_inodemod = cpu_to_le64(od->dq_dquot.dq_dqb.dqb_curinodes - | |
860 | od->dq_originodes); | |
861 | spin_unlock(&dq_data_lock); | |
862 | mlog(0, "Writing local dquot %u space %lld inodes %lld\n", | |
9a2f3866 JK |
863 | od->dq_dquot.dq_id, (long long)le64_to_cpu(dqblk->dqb_spacemod), |
864 | (long long)le64_to_cpu(dqblk->dqb_inodemod)); | |
9e33d69f JK |
865 | } |
866 | ||
867 | /* Write dquot to local quota file */ | |
868 | static int ocfs2_local_write_dquot(struct dquot *dquot) | |
869 | { | |
870 | struct super_block *sb = dquot->dq_sb; | |
871 | struct ocfs2_dquot *od = OCFS2_DQUOT(dquot); | |
85eb8b73 | 872 | struct buffer_head *bh = NULL; |
9e33d69f JK |
873 | int status; |
874 | ||
85eb8b73 | 875 | status = ocfs2_read_quota_block(sb_dqopt(sb)->files[dquot->dq_type], |
9e33d69f | 876 | ol_dqblk_file_block(sb, od->dq_local_off), |
85eb8b73 JB |
877 | &bh); |
878 | if (status) { | |
9e33d69f JK |
879 | mlog_errno(status); |
880 | goto out; | |
881 | } | |
882 | status = ocfs2_modify_bh(sb_dqopt(sb)->files[dquot->dq_type], bh, | |
883 | olq_set_dquot, od); | |
884 | if (status < 0) { | |
885 | mlog_errno(status); | |
886 | goto out; | |
887 | } | |
888 | out: | |
889 | brelse(bh); | |
890 | return status; | |
891 | } | |
892 | ||
893 | /* Find free entry in local quota file */ | |
894 | static struct ocfs2_quota_chunk *ocfs2_find_free_entry(struct super_block *sb, | |
895 | int type, | |
896 | int *offset) | |
897 | { | |
898 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
899 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
900 | struct ocfs2_quota_chunk *chunk; | |
901 | struct ocfs2_local_disk_chunk *dchunk; | |
902 | int found = 0, len; | |
903 | ||
904 | list_for_each_entry(chunk, &oinfo->dqi_chunk, qc_chunk) { | |
905 | dchunk = (struct ocfs2_local_disk_chunk *) | |
906 | chunk->qc_headerbh->b_data; | |
907 | if (le32_to_cpu(dchunk->dqc_free) > 0) { | |
908 | found = 1; | |
909 | break; | |
910 | } | |
911 | } | |
912 | if (!found) | |
913 | return NULL; | |
914 | ||
915 | if (chunk->qc_num < oinfo->dqi_chunks - 1) { | |
916 | len = ol_chunk_entries(sb); | |
917 | } else { | |
918 | len = (oinfo->dqi_blocks - | |
919 | ol_quota_chunk_block(sb, chunk->qc_num) - 1) | |
920 | * ol_quota_entries_per_block(sb); | |
921 | } | |
922 | ||
923 | found = ocfs2_find_next_zero_bit(dchunk->dqc_bitmap, len, 0); | |
924 | /* We failed? */ | |
925 | if (found == len) { | |
926 | mlog(ML_ERROR, "Did not find empty entry in chunk %d with %u" | |
927 | " entries free (type=%d)\n", chunk->qc_num, | |
928 | le32_to_cpu(dchunk->dqc_free), type); | |
929 | return ERR_PTR(-EIO); | |
930 | } | |
931 | *offset = found; | |
932 | return chunk; | |
933 | } | |
934 | ||
935 | /* Add new chunk to the local quota file */ | |
936 | static struct ocfs2_quota_chunk *ocfs2_local_quota_add_chunk( | |
937 | struct super_block *sb, | |
938 | int type, | |
939 | int *offset) | |
940 | { | |
941 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
942 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
943 | struct inode *lqinode = sb_dqopt(sb)->files[type]; | |
944 | struct ocfs2_quota_chunk *chunk = NULL; | |
945 | struct ocfs2_local_disk_chunk *dchunk; | |
946 | int status; | |
947 | handle_t *handle; | |
0e7f387b | 948 | struct buffer_head *bh = NULL, *dbh = NULL; |
9e33d69f JK |
949 | u64 p_blkno; |
950 | ||
951 | /* We are protected by dqio_sem so no locking needed */ | |
952 | status = ocfs2_extend_no_holes(lqinode, | |
953 | lqinode->i_size + 2 * sb->s_blocksize, | |
954 | lqinode->i_size); | |
955 | if (status < 0) { | |
956 | mlog_errno(status); | |
957 | goto out; | |
958 | } | |
959 | status = ocfs2_simple_size_update(lqinode, oinfo->dqi_lqi_bh, | |
960 | lqinode->i_size + 2 * sb->s_blocksize); | |
961 | if (status < 0) { | |
962 | mlog_errno(status); | |
963 | goto out; | |
964 | } | |
965 | ||
966 | chunk = kmem_cache_alloc(ocfs2_qf_chunk_cachep, GFP_NOFS); | |
967 | if (!chunk) { | |
968 | status = -ENOMEM; | |
969 | mlog_errno(status); | |
970 | goto out; | |
971 | } | |
0584974a JK |
972 | /* Local quota info and two new blocks we initialize */ |
973 | handle = ocfs2_start_trans(OCFS2_SB(sb), | |
974 | OCFS2_LOCAL_QINFO_WRITE_CREDITS + | |
975 | 2 * OCFS2_QUOTA_BLOCK_UPDATE_CREDITS); | |
0e7f387b JK |
976 | if (IS_ERR(handle)) { |
977 | status = PTR_ERR(handle); | |
978 | mlog_errno(status); | |
979 | goto out; | |
980 | } | |
9e33d69f | 981 | |
0e7f387b | 982 | /* Initialize chunk header */ |
9e33d69f JK |
983 | down_read(&OCFS2_I(lqinode)->ip_alloc_sem); |
984 | status = ocfs2_extent_map_get_blocks(lqinode, oinfo->dqi_blocks, | |
985 | &p_blkno, NULL, NULL); | |
986 | up_read(&OCFS2_I(lqinode)->ip_alloc_sem); | |
987 | if (status < 0) { | |
988 | mlog_errno(status); | |
0e7f387b | 989 | goto out_trans; |
9e33d69f JK |
990 | } |
991 | bh = sb_getblk(sb, p_blkno); | |
992 | if (!bh) { | |
993 | status = -ENOMEM; | |
994 | mlog_errno(status); | |
0e7f387b | 995 | goto out_trans; |
9e33d69f JK |
996 | } |
997 | dchunk = (struct ocfs2_local_disk_chunk *)bh->b_data; | |
8cb471e8 | 998 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(lqinode), bh); |
0cf2f763 | 999 | status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), bh, |
0e7f387b | 1000 | OCFS2_JOURNAL_ACCESS_CREATE); |
9e33d69f JK |
1001 | if (status < 0) { |
1002 | mlog_errno(status); | |
1003 | goto out_trans; | |
1004 | } | |
1005 | lock_buffer(bh); | |
df32b334 | 1006 | dchunk->dqc_free = cpu_to_le32(ol_quota_entries_per_block(sb)); |
9e33d69f JK |
1007 | memset(dchunk->dqc_bitmap, 0, |
1008 | sb->s_blocksize - sizeof(struct ocfs2_local_disk_chunk) - | |
1009 | OCFS2_QBLK_RESERVED_SPACE); | |
9e33d69f JK |
1010 | unlock_buffer(bh); |
1011 | status = ocfs2_journal_dirty(handle, bh); | |
1012 | if (status < 0) { | |
1013 | mlog_errno(status); | |
1014 | goto out_trans; | |
1015 | } | |
1016 | ||
0e7f387b JK |
1017 | /* Initialize new block with structures */ |
1018 | down_read(&OCFS2_I(lqinode)->ip_alloc_sem); | |
1019 | status = ocfs2_extent_map_get_blocks(lqinode, oinfo->dqi_blocks + 1, | |
1020 | &p_blkno, NULL, NULL); | |
1021 | up_read(&OCFS2_I(lqinode)->ip_alloc_sem); | |
1022 | if (status < 0) { | |
1023 | mlog_errno(status); | |
1024 | goto out_trans; | |
1025 | } | |
1026 | dbh = sb_getblk(sb, p_blkno); | |
1027 | if (!dbh) { | |
1028 | status = -ENOMEM; | |
1029 | mlog_errno(status); | |
1030 | goto out_trans; | |
1031 | } | |
8cb471e8 | 1032 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(lqinode), dbh); |
0cf2f763 | 1033 | status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), dbh, |
0e7f387b JK |
1034 | OCFS2_JOURNAL_ACCESS_CREATE); |
1035 | if (status < 0) { | |
1036 | mlog_errno(status); | |
1037 | goto out_trans; | |
1038 | } | |
1039 | lock_buffer(dbh); | |
1040 | memset(dbh->b_data, 0, sb->s_blocksize - OCFS2_QBLK_RESERVED_SPACE); | |
1041 | unlock_buffer(dbh); | |
1042 | status = ocfs2_journal_dirty(handle, dbh); | |
1043 | if (status < 0) { | |
1044 | mlog_errno(status); | |
1045 | goto out_trans; | |
1046 | } | |
1047 | ||
1048 | /* Update local quotafile info */ | |
9e33d69f JK |
1049 | oinfo->dqi_blocks += 2; |
1050 | oinfo->dqi_chunks++; | |
1051 | status = ocfs2_local_write_info(sb, type); | |
1052 | if (status < 0) { | |
1053 | mlog_errno(status); | |
1054 | goto out_trans; | |
1055 | } | |
1056 | status = ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1057 | if (status < 0) { | |
1058 | mlog_errno(status); | |
1059 | goto out; | |
1060 | } | |
1061 | ||
1062 | list_add_tail(&chunk->qc_chunk, &oinfo->dqi_chunk); | |
1063 | chunk->qc_num = list_entry(chunk->qc_chunk.prev, | |
1064 | struct ocfs2_quota_chunk, | |
1065 | qc_chunk)->qc_num + 1; | |
1066 | chunk->qc_headerbh = bh; | |
1067 | *offset = 0; | |
1068 | return chunk; | |
1069 | out_trans: | |
1070 | ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1071 | out: | |
1072 | brelse(bh); | |
0e7f387b | 1073 | brelse(dbh); |
9e33d69f JK |
1074 | kmem_cache_free(ocfs2_qf_chunk_cachep, chunk); |
1075 | return ERR_PTR(status); | |
1076 | } | |
1077 | ||
1078 | /* Find free entry in local quota file */ | |
1079 | static struct ocfs2_quota_chunk *ocfs2_extend_local_quota_file( | |
1080 | struct super_block *sb, | |
1081 | int type, | |
1082 | int *offset) | |
1083 | { | |
1084 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
1085 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
1086 | struct ocfs2_quota_chunk *chunk; | |
1087 | struct inode *lqinode = sb_dqopt(sb)->files[type]; | |
1088 | struct ocfs2_local_disk_chunk *dchunk; | |
1089 | int epb = ol_quota_entries_per_block(sb); | |
1090 | unsigned int chunk_blocks; | |
0e7f387b JK |
1091 | struct buffer_head *bh; |
1092 | u64 p_blkno; | |
9e33d69f JK |
1093 | int status; |
1094 | handle_t *handle; | |
1095 | ||
1096 | if (list_empty(&oinfo->dqi_chunk)) | |
1097 | return ocfs2_local_quota_add_chunk(sb, type, offset); | |
1098 | /* Is the last chunk full? */ | |
1099 | chunk = list_entry(oinfo->dqi_chunk.prev, | |
1100 | struct ocfs2_quota_chunk, qc_chunk); | |
1101 | chunk_blocks = oinfo->dqi_blocks - | |
1102 | ol_quota_chunk_block(sb, chunk->qc_num) - 1; | |
1103 | if (ol_chunk_blocks(sb) == chunk_blocks) | |
1104 | return ocfs2_local_quota_add_chunk(sb, type, offset); | |
1105 | ||
1106 | /* We are protected by dqio_sem so no locking needed */ | |
1107 | status = ocfs2_extend_no_holes(lqinode, | |
1108 | lqinode->i_size + sb->s_blocksize, | |
1109 | lqinode->i_size); | |
1110 | if (status < 0) { | |
1111 | mlog_errno(status); | |
1112 | goto out; | |
1113 | } | |
1114 | status = ocfs2_simple_size_update(lqinode, oinfo->dqi_lqi_bh, | |
1115 | lqinode->i_size + sb->s_blocksize); | |
1116 | if (status < 0) { | |
1117 | mlog_errno(status); | |
1118 | goto out; | |
1119 | } | |
0e7f387b JK |
1120 | |
1121 | /* Get buffer from the just added block */ | |
1122 | down_read(&OCFS2_I(lqinode)->ip_alloc_sem); | |
1123 | status = ocfs2_extent_map_get_blocks(lqinode, oinfo->dqi_blocks, | |
1124 | &p_blkno, NULL, NULL); | |
1125 | up_read(&OCFS2_I(lqinode)->ip_alloc_sem); | |
1126 | if (status < 0) { | |
1127 | mlog_errno(status); | |
1128 | goto out; | |
1129 | } | |
1130 | bh = sb_getblk(sb, p_blkno); | |
1131 | if (!bh) { | |
1132 | status = -ENOMEM; | |
1133 | mlog_errno(status); | |
1134 | goto out; | |
1135 | } | |
8cb471e8 | 1136 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(lqinode), bh); |
0e7f387b | 1137 | |
0584974a JK |
1138 | /* Local quota info, chunk header and the new block we initialize */ |
1139 | handle = ocfs2_start_trans(OCFS2_SB(sb), | |
1140 | OCFS2_LOCAL_QINFO_WRITE_CREDITS + | |
1141 | 2 * OCFS2_QUOTA_BLOCK_UPDATE_CREDITS); | |
9e33d69f JK |
1142 | if (IS_ERR(handle)) { |
1143 | status = PTR_ERR(handle); | |
1144 | mlog_errno(status); | |
1145 | goto out; | |
1146 | } | |
0e7f387b | 1147 | /* Zero created block */ |
0cf2f763 | 1148 | status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), bh, |
0e7f387b JK |
1149 | OCFS2_JOURNAL_ACCESS_CREATE); |
1150 | if (status < 0) { | |
1151 | mlog_errno(status); | |
1152 | goto out_trans; | |
1153 | } | |
1154 | lock_buffer(bh); | |
1155 | memset(bh->b_data, 0, sb->s_blocksize); | |
1156 | unlock_buffer(bh); | |
1157 | status = ocfs2_journal_dirty(handle, bh); | |
1158 | if (status < 0) { | |
1159 | mlog_errno(status); | |
1160 | goto out_trans; | |
1161 | } | |
1162 | /* Update chunk header */ | |
0cf2f763 JB |
1163 | status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), |
1164 | chunk->qc_headerbh, | |
9e33d69f JK |
1165 | OCFS2_JOURNAL_ACCESS_WRITE); |
1166 | if (status < 0) { | |
1167 | mlog_errno(status); | |
1168 | goto out_trans; | |
1169 | } | |
1170 | ||
1171 | dchunk = (struct ocfs2_local_disk_chunk *)chunk->qc_headerbh->b_data; | |
1172 | lock_buffer(chunk->qc_headerbh); | |
1173 | le32_add_cpu(&dchunk->dqc_free, ol_quota_entries_per_block(sb)); | |
1174 | unlock_buffer(chunk->qc_headerbh); | |
1175 | status = ocfs2_journal_dirty(handle, chunk->qc_headerbh); | |
1176 | if (status < 0) { | |
1177 | mlog_errno(status); | |
1178 | goto out_trans; | |
1179 | } | |
0e7f387b | 1180 | /* Update file header */ |
9e33d69f JK |
1181 | oinfo->dqi_blocks++; |
1182 | status = ocfs2_local_write_info(sb, type); | |
1183 | if (status < 0) { | |
1184 | mlog_errno(status); | |
1185 | goto out_trans; | |
1186 | } | |
1187 | ||
1188 | status = ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1189 | if (status < 0) { | |
1190 | mlog_errno(status); | |
1191 | goto out; | |
1192 | } | |
1193 | *offset = chunk_blocks * epb; | |
1194 | return chunk; | |
1195 | out_trans: | |
1196 | ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1197 | out: | |
1198 | return ERR_PTR(status); | |
1199 | } | |
1200 | ||
df32b334 | 1201 | static void olq_alloc_dquot(struct buffer_head *bh, void *private) |
9e33d69f JK |
1202 | { |
1203 | int *offset = private; | |
1204 | struct ocfs2_local_disk_chunk *dchunk; | |
1205 | ||
1206 | dchunk = (struct ocfs2_local_disk_chunk *)bh->b_data; | |
1207 | ocfs2_set_bit(*offset, dchunk->dqc_bitmap); | |
1208 | le32_add_cpu(&dchunk->dqc_free, -1); | |
1209 | } | |
1210 | ||
1211 | /* Create dquot in the local file for given id */ | |
1212 | static int ocfs2_create_local_dquot(struct dquot *dquot) | |
1213 | { | |
1214 | struct super_block *sb = dquot->dq_sb; | |
1215 | int type = dquot->dq_type; | |
1216 | struct inode *lqinode = sb_dqopt(sb)->files[type]; | |
1217 | struct ocfs2_quota_chunk *chunk; | |
1218 | struct ocfs2_dquot *od = OCFS2_DQUOT(dquot); | |
1219 | int offset; | |
1220 | int status; | |
1221 | ||
1222 | chunk = ocfs2_find_free_entry(sb, type, &offset); | |
1223 | if (!chunk) { | |
1224 | chunk = ocfs2_extend_local_quota_file(sb, type, &offset); | |
1225 | if (IS_ERR(chunk)) | |
1226 | return PTR_ERR(chunk); | |
1227 | } else if (IS_ERR(chunk)) { | |
1228 | return PTR_ERR(chunk); | |
1229 | } | |
1230 | od->dq_local_off = ol_dqblk_off(sb, chunk->qc_num, offset); | |
1231 | od->dq_chunk = chunk; | |
1232 | ||
1233 | /* Initialize dquot structure on disk */ | |
1234 | status = ocfs2_local_write_dquot(dquot); | |
1235 | if (status < 0) { | |
1236 | mlog_errno(status); | |
1237 | goto out; | |
1238 | } | |
1239 | ||
1240 | /* Mark structure as allocated */ | |
1241 | status = ocfs2_modify_bh(lqinode, chunk->qc_headerbh, olq_alloc_dquot, | |
1242 | &offset); | |
1243 | if (status < 0) { | |
1244 | mlog_errno(status); | |
1245 | goto out; | |
1246 | } | |
1247 | out: | |
1248 | return status; | |
1249 | } | |
1250 | ||
1251 | /* Create entry in local file for dquot, load data from the global file */ | |
1252 | static int ocfs2_local_read_dquot(struct dquot *dquot) | |
1253 | { | |
1254 | int status; | |
1255 | ||
1256 | mlog_entry("id=%u, type=%d\n", dquot->dq_id, dquot->dq_type); | |
1257 | ||
1258 | status = ocfs2_global_read_dquot(dquot); | |
1259 | if (status < 0) { | |
1260 | mlog_errno(status); | |
1261 | goto out_err; | |
1262 | } | |
1263 | ||
1264 | /* Now create entry in the local quota file */ | |
1265 | status = ocfs2_create_local_dquot(dquot); | |
1266 | if (status < 0) { | |
1267 | mlog_errno(status); | |
1268 | goto out_err; | |
1269 | } | |
1270 | mlog_exit(0); | |
1271 | return 0; | |
1272 | out_err: | |
1273 | mlog_exit(status); | |
1274 | return status; | |
1275 | } | |
1276 | ||
1277 | /* Release dquot structure from local quota file. ocfs2_release_dquot() has | |
1278 | * already started a transaction and obtained exclusive lock for global | |
1279 | * quota file. */ | |
1280 | static int ocfs2_local_release_dquot(struct dquot *dquot) | |
1281 | { | |
1282 | int status; | |
1283 | int type = dquot->dq_type; | |
1284 | struct ocfs2_dquot *od = OCFS2_DQUOT(dquot); | |
1285 | struct super_block *sb = dquot->dq_sb; | |
1286 | struct ocfs2_local_disk_chunk *dchunk; | |
1287 | int offset; | |
1288 | handle_t *handle = journal_current_handle(); | |
1289 | ||
1290 | BUG_ON(!handle); | |
1291 | /* First write all local changes to global file */ | |
1292 | status = ocfs2_global_release_dquot(dquot); | |
1293 | if (status < 0) { | |
1294 | mlog_errno(status); | |
1295 | goto out; | |
1296 | } | |
1297 | ||
0cf2f763 JB |
1298 | status = ocfs2_journal_access_dq(handle, |
1299 | INODE_CACHE(sb_dqopt(sb)->files[type]), | |
9e33d69f JK |
1300 | od->dq_chunk->qc_headerbh, OCFS2_JOURNAL_ACCESS_WRITE); |
1301 | if (status < 0) { | |
1302 | mlog_errno(status); | |
1303 | goto out; | |
1304 | } | |
1305 | offset = ol_dqblk_chunk_off(sb, od->dq_chunk->qc_num, | |
1306 | od->dq_local_off); | |
1307 | dchunk = (struct ocfs2_local_disk_chunk *) | |
1308 | (od->dq_chunk->qc_headerbh->b_data); | |
1309 | /* Mark structure as freed */ | |
1310 | lock_buffer(od->dq_chunk->qc_headerbh); | |
1311 | ocfs2_clear_bit(offset, dchunk->dqc_bitmap); | |
1312 | le32_add_cpu(&dchunk->dqc_free, 1); | |
1313 | unlock_buffer(od->dq_chunk->qc_headerbh); | |
1314 | status = ocfs2_journal_dirty(handle, od->dq_chunk->qc_headerbh); | |
1315 | if (status < 0) { | |
1316 | mlog_errno(status); | |
1317 | goto out; | |
1318 | } | |
1319 | status = 0; | |
1320 | out: | |
1321 | /* Clear the read bit so that next time someone uses this | |
1322 | * dquot he reads fresh info from disk and allocates local | |
1323 | * dquot structure */ | |
1324 | clear_bit(DQ_READ_B, &dquot->dq_flags); | |
1325 | return status; | |
1326 | } | |
1327 | ||
1328 | static struct quota_format_ops ocfs2_format_ops = { | |
1329 | .check_quota_file = ocfs2_local_check_quota_file, | |
1330 | .read_file_info = ocfs2_local_read_info, | |
1331 | .write_file_info = ocfs2_global_write_info, | |
1332 | .free_file_info = ocfs2_local_free_info, | |
1333 | .read_dqblk = ocfs2_local_read_dquot, | |
1334 | .commit_dqblk = ocfs2_local_write_dquot, | |
1335 | .release_dqblk = ocfs2_local_release_dquot, | |
1336 | }; | |
1337 | ||
1338 | struct quota_format_type ocfs2_quota_format = { | |
1339 | .qf_fmt_id = QFMT_OCFS2, | |
1340 | .qf_ops = &ocfs2_format_ops, | |
1341 | .qf_owner = THIS_MODULE | |
1342 | }; |