Commit | Line | Data |
---|---|---|
9e33d69f JK |
1 | /* |
2 | * Implementation of operations over local quota file | |
3 | */ | |
4 | ||
5 | #include <linux/fs.h> | |
5a0e3ad6 | 6 | #include <linux/slab.h> |
9e33d69f JK |
7 | #include <linux/quota.h> |
8 | #include <linux/quotaops.h> | |
9 | #include <linux/module.h> | |
10 | ||
9e33d69f JK |
11 | #include <cluster/masklog.h> |
12 | ||
13 | #include "ocfs2_fs.h" | |
14 | #include "ocfs2.h" | |
15 | #include "inode.h" | |
16 | #include "alloc.h" | |
17 | #include "file.h" | |
18 | #include "buffer_head_io.h" | |
19 | #include "journal.h" | |
20 | #include "sysfile.h" | |
21 | #include "dlmglue.h" | |
22 | #include "quota.h" | |
4b3fa190 | 23 | #include "uptodate.h" |
fb8dd8d7 | 24 | #include "super.h" |
38877a43 | 25 | #include "ocfs2_trace.h" |
9e33d69f JK |
26 | |
27 | /* Number of local quota structures per block */ | |
28 | static inline unsigned int ol_quota_entries_per_block(struct super_block *sb) | |
29 | { | |
30 | return ((sb->s_blocksize - OCFS2_QBLK_RESERVED_SPACE) / | |
31 | sizeof(struct ocfs2_local_disk_dqblk)); | |
32 | } | |
33 | ||
34 | /* Number of blocks with entries in one chunk */ | |
35 | static inline unsigned int ol_chunk_blocks(struct super_block *sb) | |
36 | { | |
37 | return ((sb->s_blocksize - sizeof(struct ocfs2_local_disk_chunk) - | |
38 | OCFS2_QBLK_RESERVED_SPACE) << 3) / | |
39 | ol_quota_entries_per_block(sb); | |
40 | } | |
41 | ||
42 | /* Number of entries in a chunk bitmap */ | |
43 | static unsigned int ol_chunk_entries(struct super_block *sb) | |
44 | { | |
45 | return ol_chunk_blocks(sb) * ol_quota_entries_per_block(sb); | |
46 | } | |
47 | ||
48 | /* Offset of the chunk in quota file */ | |
49 | static unsigned int ol_quota_chunk_block(struct super_block *sb, int c) | |
50 | { | |
51 | /* 1 block for local quota file info, 1 block per chunk for chunk info */ | |
52 | return 1 + (ol_chunk_blocks(sb) + 1) * c; | |
53 | } | |
54 | ||
2205363d JK |
55 | static unsigned int ol_dqblk_block(struct super_block *sb, int c, int off) |
56 | { | |
57 | int epb = ol_quota_entries_per_block(sb); | |
58 | ||
59 | return ol_quota_chunk_block(sb, c) + 1 + off / epb; | |
60 | } | |
61 | ||
62 | static unsigned int ol_dqblk_block_off(struct super_block *sb, int c, int off) | |
9e33d69f JK |
63 | { |
64 | int epb = ol_quota_entries_per_block(sb); | |
65 | ||
2205363d JK |
66 | return (off % epb) * sizeof(struct ocfs2_local_disk_dqblk); |
67 | } | |
68 | ||
69 | /* Offset of the dquot structure in the quota file */ | |
70 | static loff_t ol_dqblk_off(struct super_block *sb, int c, int off) | |
71 | { | |
72 | return (ol_dqblk_block(sb, c, off) << sb->s_blocksize_bits) + | |
73 | ol_dqblk_block_off(sb, c, off); | |
9e33d69f JK |
74 | } |
75 | ||
9e33d69f JK |
76 | static inline unsigned int ol_dqblk_block_offset(struct super_block *sb, loff_t off) |
77 | { | |
78 | return off & ((1 << sb->s_blocksize_bits) - 1); | |
79 | } | |
80 | ||
81 | /* Compute offset in the chunk of a structure with the given offset */ | |
82 | static int ol_dqblk_chunk_off(struct super_block *sb, int c, loff_t off) | |
83 | { | |
84 | int epb = ol_quota_entries_per_block(sb); | |
85 | ||
86 | return ((off >> sb->s_blocksize_bits) - | |
87 | ol_quota_chunk_block(sb, c) - 1) * epb | |
88 | + ((unsigned int)(off & ((1 << sb->s_blocksize_bits) - 1))) / | |
89 | sizeof(struct ocfs2_local_disk_dqblk); | |
90 | } | |
91 | ||
92 | /* Write bufferhead into the fs */ | |
93 | static int ocfs2_modify_bh(struct inode *inode, struct buffer_head *bh, | |
94 | void (*modify)(struct buffer_head *, void *), void *private) | |
95 | { | |
96 | struct super_block *sb = inode->i_sb; | |
97 | handle_t *handle; | |
98 | int status; | |
99 | ||
0584974a JK |
100 | handle = ocfs2_start_trans(OCFS2_SB(sb), |
101 | OCFS2_QUOTA_BLOCK_UPDATE_CREDITS); | |
9e33d69f JK |
102 | if (IS_ERR(handle)) { |
103 | status = PTR_ERR(handle); | |
104 | mlog_errno(status); | |
105 | return status; | |
106 | } | |
0cf2f763 | 107 | status = ocfs2_journal_access_dq(handle, INODE_CACHE(inode), bh, |
13723d00 | 108 | OCFS2_JOURNAL_ACCESS_WRITE); |
9e33d69f JK |
109 | if (status < 0) { |
110 | mlog_errno(status); | |
111 | ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
112 | return status; | |
113 | } | |
114 | lock_buffer(bh); | |
115 | modify(bh, private); | |
116 | unlock_buffer(bh); | |
ec20cec7 JB |
117 | ocfs2_journal_dirty(handle, bh); |
118 | ||
9e33d69f JK |
119 | status = ocfs2_commit_trans(OCFS2_SB(sb), handle); |
120 | if (status < 0) { | |
121 | mlog_errno(status); | |
122 | return status; | |
123 | } | |
124 | return 0; | |
125 | } | |
126 | ||
fb8dd8d7 JK |
127 | /* |
128 | * Read quota block from a given logical offset. | |
129 | * | |
130 | * This function acquires ip_alloc_sem and thus it must not be called with a | |
131 | * transaction started. | |
132 | */ | |
133 | static int ocfs2_read_quota_block(struct inode *inode, u64 v_block, | |
134 | struct buffer_head **bh) | |
135 | { | |
136 | int rc = 0; | |
137 | struct buffer_head *tmp = *bh; | |
138 | ||
139 | if (i_size_read(inode) >> inode->i_sb->s_blocksize_bits <= v_block) { | |
140 | ocfs2_error(inode->i_sb, | |
7ecef14a | 141 | "Quota file %llu is probably corrupted! Requested to read block %Lu but file has size only %Lu\n", |
fb8dd8d7 JK |
142 | (unsigned long long)OCFS2_I(inode)->ip_blkno, |
143 | (unsigned long long)v_block, | |
144 | (unsigned long long)i_size_read(inode)); | |
145 | return -EIO; | |
146 | } | |
147 | rc = ocfs2_read_virt_blocks(inode, v_block, 1, &tmp, 0, | |
148 | ocfs2_validate_quota_block); | |
149 | if (rc) | |
150 | mlog_errno(rc); | |
151 | ||
152 | /* If ocfs2_read_virt_blocks() got us a new bh, pass it up. */ | |
153 | if (!rc && !*bh) | |
154 | *bh = tmp; | |
155 | ||
156 | return rc; | |
157 | } | |
158 | ||
9e33d69f JK |
159 | /* Check whether we understand format of quota files */ |
160 | static int ocfs2_local_check_quota_file(struct super_block *sb, int type) | |
161 | { | |
52362810 JK |
162 | unsigned int lmagics[OCFS2_MAXQUOTAS] = OCFS2_LOCAL_QMAGICS; |
163 | unsigned int lversions[OCFS2_MAXQUOTAS] = OCFS2_LOCAL_QVERSIONS; | |
164 | unsigned int gmagics[OCFS2_MAXQUOTAS] = OCFS2_GLOBAL_QMAGICS; | |
165 | unsigned int gversions[OCFS2_MAXQUOTAS] = OCFS2_GLOBAL_QVERSIONS; | |
166 | unsigned int ino[OCFS2_MAXQUOTAS] = { USER_QUOTA_SYSTEM_INODE, | |
167 | GROUP_QUOTA_SYSTEM_INODE }; | |
85eb8b73 | 168 | struct buffer_head *bh = NULL; |
9e33d69f JK |
169 | struct inode *linode = sb_dqopt(sb)->files[type]; |
170 | struct inode *ginode = NULL; | |
171 | struct ocfs2_disk_dqheader *dqhead; | |
172 | int status, ret = 0; | |
173 | ||
174 | /* First check whether we understand local quota file */ | |
85eb8b73 JB |
175 | status = ocfs2_read_quota_block(linode, 0, &bh); |
176 | if (status) { | |
9e33d69f JK |
177 | mlog_errno(status); |
178 | mlog(ML_ERROR, "failed to read quota file header (type=%d)\n", | |
179 | type); | |
180 | goto out_err; | |
181 | } | |
182 | dqhead = (struct ocfs2_disk_dqheader *)(bh->b_data); | |
183 | if (le32_to_cpu(dqhead->dqh_magic) != lmagics[type]) { | |
184 | mlog(ML_ERROR, "quota file magic does not match (%u != %u)," | |
185 | " type=%d\n", le32_to_cpu(dqhead->dqh_magic), | |
186 | lmagics[type], type); | |
187 | goto out_err; | |
188 | } | |
189 | if (le32_to_cpu(dqhead->dqh_version) != lversions[type]) { | |
190 | mlog(ML_ERROR, "quota file version does not match (%u != %u)," | |
191 | " type=%d\n", le32_to_cpu(dqhead->dqh_version), | |
192 | lversions[type], type); | |
193 | goto out_err; | |
194 | } | |
195 | brelse(bh); | |
196 | bh = NULL; | |
197 | ||
198 | /* Next check whether we understand global quota file */ | |
199 | ginode = ocfs2_get_system_file_inode(OCFS2_SB(sb), ino[type], | |
200 | OCFS2_INVALID_SLOT); | |
201 | if (!ginode) { | |
202 | mlog(ML_ERROR, "cannot get global quota file inode " | |
203 | "(type=%d)\n", type); | |
204 | goto out_err; | |
205 | } | |
206 | /* Since the header is read only, we don't care about locking */ | |
85eb8b73 JB |
207 | status = ocfs2_read_quota_block(ginode, 0, &bh); |
208 | if (status) { | |
9e33d69f JK |
209 | mlog_errno(status); |
210 | mlog(ML_ERROR, "failed to read global quota file header " | |
211 | "(type=%d)\n", type); | |
212 | goto out_err; | |
213 | } | |
214 | dqhead = (struct ocfs2_disk_dqheader *)(bh->b_data); | |
215 | if (le32_to_cpu(dqhead->dqh_magic) != gmagics[type]) { | |
216 | mlog(ML_ERROR, "global quota file magic does not match " | |
217 | "(%u != %u), type=%d\n", | |
218 | le32_to_cpu(dqhead->dqh_magic), gmagics[type], type); | |
219 | goto out_err; | |
220 | } | |
221 | if (le32_to_cpu(dqhead->dqh_version) != gversions[type]) { | |
222 | mlog(ML_ERROR, "global quota file version does not match " | |
223 | "(%u != %u), type=%d\n", | |
224 | le32_to_cpu(dqhead->dqh_version), gversions[type], | |
225 | type); | |
226 | goto out_err; | |
227 | } | |
228 | ||
229 | ret = 1; | |
230 | out_err: | |
231 | brelse(bh); | |
232 | iput(ginode); | |
233 | return ret; | |
234 | } | |
235 | ||
236 | /* Release given list of quota file chunks */ | |
237 | static void ocfs2_release_local_quota_bitmaps(struct list_head *head) | |
238 | { | |
239 | struct ocfs2_quota_chunk *pos, *next; | |
240 | ||
241 | list_for_each_entry_safe(pos, next, head, qc_chunk) { | |
242 | list_del(&pos->qc_chunk); | |
243 | brelse(pos->qc_headerbh); | |
244 | kmem_cache_free(ocfs2_qf_chunk_cachep, pos); | |
245 | } | |
246 | } | |
247 | ||
248 | /* Load quota bitmaps into memory */ | |
249 | static int ocfs2_load_local_quota_bitmaps(struct inode *inode, | |
250 | struct ocfs2_local_disk_dqinfo *ldinfo, | |
251 | struct list_head *head) | |
252 | { | |
253 | struct ocfs2_quota_chunk *newchunk; | |
254 | int i, status; | |
255 | ||
256 | INIT_LIST_HEAD(head); | |
257 | for (i = 0; i < le32_to_cpu(ldinfo->dqi_chunks); i++) { | |
258 | newchunk = kmem_cache_alloc(ocfs2_qf_chunk_cachep, GFP_NOFS); | |
259 | if (!newchunk) { | |
260 | ocfs2_release_local_quota_bitmaps(head); | |
261 | return -ENOMEM; | |
262 | } | |
263 | newchunk->qc_num = i; | |
85eb8b73 JB |
264 | newchunk->qc_headerbh = NULL; |
265 | status = ocfs2_read_quota_block(inode, | |
9e33d69f | 266 | ol_quota_chunk_block(inode->i_sb, i), |
85eb8b73 JB |
267 | &newchunk->qc_headerbh); |
268 | if (status) { | |
9e33d69f JK |
269 | mlog_errno(status); |
270 | kmem_cache_free(ocfs2_qf_chunk_cachep, newchunk); | |
271 | ocfs2_release_local_quota_bitmaps(head); | |
272 | return status; | |
273 | } | |
274 | list_add_tail(&newchunk->qc_chunk, head); | |
275 | } | |
276 | return 0; | |
277 | } | |
278 | ||
279 | static void olq_update_info(struct buffer_head *bh, void *private) | |
280 | { | |
281 | struct mem_dqinfo *info = private; | |
282 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
283 | struct ocfs2_local_disk_dqinfo *ldinfo; | |
284 | ||
285 | ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + | |
286 | OCFS2_LOCAL_INFO_OFF); | |
287 | spin_lock(&dq_data_lock); | |
96827adc | 288 | ldinfo->dqi_flags = cpu_to_le32(oinfo->dqi_flags); |
9e33d69f JK |
289 | ldinfo->dqi_chunks = cpu_to_le32(oinfo->dqi_chunks); |
290 | ldinfo->dqi_blocks = cpu_to_le32(oinfo->dqi_blocks); | |
291 | spin_unlock(&dq_data_lock); | |
292 | } | |
293 | ||
2205363d JK |
294 | static int ocfs2_add_recovery_chunk(struct super_block *sb, |
295 | struct ocfs2_local_disk_chunk *dchunk, | |
296 | int chunk, | |
297 | struct list_head *head) | |
298 | { | |
299 | struct ocfs2_recovery_chunk *rc; | |
300 | ||
301 | rc = kmalloc(sizeof(struct ocfs2_recovery_chunk), GFP_NOFS); | |
302 | if (!rc) | |
303 | return -ENOMEM; | |
304 | rc->rc_chunk = chunk; | |
305 | rc->rc_bitmap = kmalloc(sb->s_blocksize, GFP_NOFS); | |
306 | if (!rc->rc_bitmap) { | |
307 | kfree(rc); | |
308 | return -ENOMEM; | |
309 | } | |
310 | memcpy(rc->rc_bitmap, dchunk->dqc_bitmap, | |
311 | (ol_chunk_entries(sb) + 7) >> 3); | |
312 | list_add_tail(&rc->rc_list, head); | |
313 | return 0; | |
314 | } | |
315 | ||
316 | static void free_recovery_list(struct list_head *head) | |
317 | { | |
318 | struct ocfs2_recovery_chunk *next; | |
319 | struct ocfs2_recovery_chunk *rchunk; | |
320 | ||
321 | list_for_each_entry_safe(rchunk, next, head, rc_list) { | |
322 | list_del(&rchunk->rc_list); | |
323 | kfree(rchunk->rc_bitmap); | |
324 | kfree(rchunk); | |
325 | } | |
326 | } | |
327 | ||
328 | void ocfs2_free_quota_recovery(struct ocfs2_quota_recovery *rec) | |
329 | { | |
330 | int type; | |
331 | ||
52362810 | 332 | for (type = 0; type < OCFS2_MAXQUOTAS; type++) |
2205363d JK |
333 | free_recovery_list(&(rec->r_list[type])); |
334 | kfree(rec); | |
335 | } | |
336 | ||
337 | /* Load entries in our quota file we have to recover*/ | |
338 | static int ocfs2_recovery_load_quota(struct inode *lqinode, | |
339 | struct ocfs2_local_disk_dqinfo *ldinfo, | |
340 | int type, | |
341 | struct list_head *head) | |
342 | { | |
343 | struct super_block *sb = lqinode->i_sb; | |
344 | struct buffer_head *hbh; | |
345 | struct ocfs2_local_disk_chunk *dchunk; | |
346 | int i, chunks = le32_to_cpu(ldinfo->dqi_chunks); | |
347 | int status = 0; | |
348 | ||
349 | for (i = 0; i < chunks; i++) { | |
85eb8b73 JB |
350 | hbh = NULL; |
351 | status = ocfs2_read_quota_block(lqinode, | |
352 | ol_quota_chunk_block(sb, i), | |
353 | &hbh); | |
354 | if (status) { | |
2205363d JK |
355 | mlog_errno(status); |
356 | break; | |
357 | } | |
358 | dchunk = (struct ocfs2_local_disk_chunk *)hbh->b_data; | |
359 | if (le32_to_cpu(dchunk->dqc_free) < ol_chunk_entries(sb)) | |
360 | status = ocfs2_add_recovery_chunk(sb, dchunk, i, head); | |
361 | brelse(hbh); | |
362 | if (status < 0) | |
363 | break; | |
364 | } | |
365 | if (status < 0) | |
366 | free_recovery_list(head); | |
367 | return status; | |
368 | } | |
369 | ||
370 | static struct ocfs2_quota_recovery *ocfs2_alloc_quota_recovery(void) | |
371 | { | |
372 | int type; | |
373 | struct ocfs2_quota_recovery *rec; | |
374 | ||
375 | rec = kmalloc(sizeof(struct ocfs2_quota_recovery), GFP_NOFS); | |
376 | if (!rec) | |
377 | return NULL; | |
52362810 | 378 | for (type = 0; type < OCFS2_MAXQUOTAS; type++) |
2205363d JK |
379 | INIT_LIST_HEAD(&(rec->r_list[type])); |
380 | return rec; | |
381 | } | |
382 | ||
383 | /* Load information we need for quota recovery into memory */ | |
384 | struct ocfs2_quota_recovery *ocfs2_begin_quota_recovery( | |
385 | struct ocfs2_super *osb, | |
386 | int slot_num) | |
387 | { | |
52362810 JK |
388 | unsigned int feature[OCFS2_MAXQUOTAS] = { |
389 | OCFS2_FEATURE_RO_COMPAT_USRQUOTA, | |
390 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA}; | |
391 | unsigned int ino[OCFS2_MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE, | |
392 | LOCAL_GROUP_QUOTA_SYSTEM_INODE }; | |
2205363d JK |
393 | struct super_block *sb = osb->sb; |
394 | struct ocfs2_local_disk_dqinfo *ldinfo; | |
395 | struct inode *lqinode; | |
396 | struct buffer_head *bh; | |
397 | int type; | |
398 | int status = 0; | |
399 | struct ocfs2_quota_recovery *rec; | |
400 | ||
619c200d SM |
401 | printk(KERN_NOTICE "ocfs2: Beginning quota recovery on device (%s) for " |
402 | "slot %u\n", osb->dev_str, slot_num); | |
403 | ||
2205363d JK |
404 | rec = ocfs2_alloc_quota_recovery(); |
405 | if (!rec) | |
406 | return ERR_PTR(-ENOMEM); | |
407 | /* First init... */ | |
408 | ||
52362810 | 409 | for (type = 0; type < OCFS2_MAXQUOTAS; type++) { |
2205363d JK |
410 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type])) |
411 | continue; | |
412 | /* At this point, journal of the slot is already replayed so | |
413 | * we can trust metadata and data of the quota file */ | |
414 | lqinode = ocfs2_get_system_file_inode(osb, ino[type], slot_num); | |
415 | if (!lqinode) { | |
416 | status = -ENOENT; | |
417 | goto out; | |
418 | } | |
419 | status = ocfs2_inode_lock_full(lqinode, NULL, 1, | |
420 | OCFS2_META_LOCK_RECOVERY); | |
421 | if (status < 0) { | |
422 | mlog_errno(status); | |
423 | goto out_put; | |
424 | } | |
425 | /* Now read local header */ | |
85eb8b73 JB |
426 | bh = NULL; |
427 | status = ocfs2_read_quota_block(lqinode, 0, &bh); | |
428 | if (status) { | |
2205363d JK |
429 | mlog_errno(status); |
430 | mlog(ML_ERROR, "failed to read quota file info header " | |
431 | "(slot=%d type=%d)\n", slot_num, type); | |
432 | goto out_lock; | |
433 | } | |
434 | ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + | |
435 | OCFS2_LOCAL_INFO_OFF); | |
436 | status = ocfs2_recovery_load_quota(lqinode, ldinfo, type, | |
437 | &rec->r_list[type]); | |
438 | brelse(bh); | |
439 | out_lock: | |
440 | ocfs2_inode_unlock(lqinode, 1); | |
441 | out_put: | |
442 | iput(lqinode); | |
443 | if (status < 0) | |
444 | break; | |
445 | } | |
446 | out: | |
447 | if (status < 0) { | |
448 | ocfs2_free_quota_recovery(rec); | |
449 | rec = ERR_PTR(status); | |
450 | } | |
451 | return rec; | |
452 | } | |
453 | ||
454 | /* Sync changes in local quota file into global quota file and | |
455 | * reinitialize local quota file. | |
456 | * The function expects local quota file to be already locked and | |
457 | * dqonoff_mutex locked. */ | |
458 | static int ocfs2_recover_local_quota_file(struct inode *lqinode, | |
459 | int type, | |
460 | struct ocfs2_quota_recovery *rec) | |
461 | { | |
462 | struct super_block *sb = lqinode->i_sb; | |
463 | struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv; | |
464 | struct ocfs2_local_disk_chunk *dchunk; | |
465 | struct ocfs2_local_disk_dqblk *dqblk; | |
466 | struct dquot *dquot; | |
467 | handle_t *handle; | |
468 | struct buffer_head *hbh = NULL, *qbh = NULL; | |
469 | int status = 0; | |
470 | int bit, chunk; | |
471 | struct ocfs2_recovery_chunk *rchunk, *next; | |
472 | qsize_t spacechange, inodechange; | |
473 | ||
38877a43 | 474 | trace_ocfs2_recover_local_quota_file((unsigned long)lqinode->i_ino, type); |
2205363d | 475 | |
2205363d JK |
476 | list_for_each_entry_safe(rchunk, next, &(rec->r_list[type]), rc_list) { |
477 | chunk = rchunk->rc_chunk; | |
85eb8b73 JB |
478 | hbh = NULL; |
479 | status = ocfs2_read_quota_block(lqinode, | |
480 | ol_quota_chunk_block(sb, chunk), | |
481 | &hbh); | |
482 | if (status) { | |
2205363d JK |
483 | mlog_errno(status); |
484 | break; | |
485 | } | |
486 | dchunk = (struct ocfs2_local_disk_chunk *)hbh->b_data; | |
984b3f57 | 487 | for_each_set_bit(bit, rchunk->rc_bitmap, ol_chunk_entries(sb)) { |
85eb8b73 JB |
488 | qbh = NULL; |
489 | status = ocfs2_read_quota_block(lqinode, | |
2205363d | 490 | ol_dqblk_block(sb, chunk, bit), |
85eb8b73 JB |
491 | &qbh); |
492 | if (status) { | |
2205363d JK |
493 | mlog_errno(status); |
494 | break; | |
495 | } | |
496 | dqblk = (struct ocfs2_local_disk_dqblk *)(qbh->b_data + | |
497 | ol_dqblk_block_off(sb, chunk, bit)); | |
aca645a6 EB |
498 | dquot = dqget(sb, |
499 | make_kqid(&init_user_ns, type, | |
500 | le64_to_cpu(dqblk->dqb_id))); | |
6184fc0b JK |
501 | if (IS_ERR(dquot)) { |
502 | status = PTR_ERR(dquot); | |
2205363d JK |
503 | mlog(ML_ERROR, "Failed to get quota structure " |
504 | "for id %u, type %d. Cannot finish quota " | |
505 | "file recovery.\n", | |
506 | (unsigned)le64_to_cpu(dqblk->dqb_id), | |
507 | type); | |
508 | goto out_put_bh; | |
509 | } | |
80d73f15 JK |
510 | status = ocfs2_lock_global_qf(oinfo, 1); |
511 | if (status < 0) { | |
512 | mlog_errno(status); | |
513 | goto out_put_dquot; | |
514 | } | |
515 | ||
2205363d JK |
516 | handle = ocfs2_start_trans(OCFS2_SB(sb), |
517 | OCFS2_QSYNC_CREDITS); | |
518 | if (IS_ERR(handle)) { | |
519 | status = PTR_ERR(handle); | |
520 | mlog_errno(status); | |
80d73f15 | 521 | goto out_drop_lock; |
2205363d JK |
522 | } |
523 | mutex_lock(&sb_dqopt(sb)->dqio_mutex); | |
524 | spin_lock(&dq_data_lock); | |
525 | /* Add usage from quota entry into quota changes | |
526 | * of our node. Auxiliary variables are important | |
527 | * due to signedness */ | |
528 | spacechange = le64_to_cpu(dqblk->dqb_spacemod); | |
529 | inodechange = le64_to_cpu(dqblk->dqb_inodemod); | |
530 | dquot->dq_dqb.dqb_curspace += spacechange; | |
531 | dquot->dq_dqb.dqb_curinodes += inodechange; | |
532 | spin_unlock(&dq_data_lock); | |
533 | /* We want to drop reference held by the crashed | |
534 | * node. Since we have our own reference we know | |
535 | * global structure actually won't be freed. */ | |
536 | status = ocfs2_global_release_dquot(dquot); | |
537 | if (status < 0) { | |
538 | mlog_errno(status); | |
539 | goto out_commit; | |
540 | } | |
541 | /* Release local quota file entry */ | |
0cf2f763 JB |
542 | status = ocfs2_journal_access_dq(handle, |
543 | INODE_CACHE(lqinode), | |
2205363d JK |
544 | qbh, OCFS2_JOURNAL_ACCESS_WRITE); |
545 | if (status < 0) { | |
546 | mlog_errno(status); | |
547 | goto out_commit; | |
548 | } | |
549 | lock_buffer(qbh); | |
93925579 AM |
550 | WARN_ON(!ocfs2_test_bit_unaligned(bit, dchunk->dqc_bitmap)); |
551 | ocfs2_clear_bit_unaligned(bit, dchunk->dqc_bitmap); | |
2205363d JK |
552 | le32_add_cpu(&dchunk->dqc_free, 1); |
553 | unlock_buffer(qbh); | |
ec20cec7 | 554 | ocfs2_journal_dirty(handle, qbh); |
2205363d JK |
555 | out_commit: |
556 | mutex_unlock(&sb_dqopt(sb)->dqio_mutex); | |
557 | ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
80d73f15 JK |
558 | out_drop_lock: |
559 | ocfs2_unlock_global_qf(oinfo, 1); | |
2205363d JK |
560 | out_put_dquot: |
561 | dqput(dquot); | |
562 | out_put_bh: | |
563 | brelse(qbh); | |
564 | if (status < 0) | |
565 | break; | |
566 | } | |
567 | brelse(hbh); | |
568 | list_del(&rchunk->rc_list); | |
569 | kfree(rchunk->rc_bitmap); | |
570 | kfree(rchunk); | |
571 | if (status < 0) | |
572 | break; | |
573 | } | |
2205363d JK |
574 | if (status < 0) |
575 | free_recovery_list(&(rec->r_list[type])); | |
c1e8d35e TM |
576 | if (status) |
577 | mlog_errno(status); | |
2205363d JK |
578 | return status; |
579 | } | |
580 | ||
581 | /* Recover local quota files for given node different from us */ | |
582 | int ocfs2_finish_quota_recovery(struct ocfs2_super *osb, | |
583 | struct ocfs2_quota_recovery *rec, | |
584 | int slot_num) | |
585 | { | |
52362810 JK |
586 | unsigned int ino[OCFS2_MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE, |
587 | LOCAL_GROUP_QUOTA_SYSTEM_INODE }; | |
2205363d JK |
588 | struct super_block *sb = osb->sb; |
589 | struct ocfs2_local_disk_dqinfo *ldinfo; | |
590 | struct buffer_head *bh; | |
591 | handle_t *handle; | |
592 | int type; | |
593 | int status = 0; | |
594 | struct inode *lqinode; | |
595 | unsigned int flags; | |
596 | ||
619c200d SM |
597 | printk(KERN_NOTICE "ocfs2: Finishing quota recovery on device (%s) for " |
598 | "slot %u\n", osb->dev_str, slot_num); | |
599 | ||
2205363d | 600 | mutex_lock(&sb_dqopt(sb)->dqonoff_mutex); |
52362810 | 601 | for (type = 0; type < OCFS2_MAXQUOTAS; type++) { |
2205363d JK |
602 | if (list_empty(&(rec->r_list[type]))) |
603 | continue; | |
38877a43 | 604 | trace_ocfs2_finish_quota_recovery(slot_num); |
2205363d JK |
605 | lqinode = ocfs2_get_system_file_inode(osb, ino[type], slot_num); |
606 | if (!lqinode) { | |
607 | status = -ENOENT; | |
608 | goto out; | |
609 | } | |
610 | status = ocfs2_inode_lock_full(lqinode, NULL, 1, | |
611 | OCFS2_META_LOCK_NOQUEUE); | |
612 | /* Someone else is holding the lock? Then he must be | |
613 | * doing the recovery. Just skip the file... */ | |
614 | if (status == -EAGAIN) { | |
619c200d SM |
615 | printk(KERN_NOTICE "ocfs2: Skipping quota recovery on " |
616 | "device (%s) for slot %d because quota file is " | |
617 | "locked.\n", osb->dev_str, slot_num); | |
2205363d JK |
618 | status = 0; |
619 | goto out_put; | |
620 | } else if (status < 0) { | |
621 | mlog_errno(status); | |
622 | goto out_put; | |
623 | } | |
624 | /* Now read local header */ | |
85eb8b73 JB |
625 | bh = NULL; |
626 | status = ocfs2_read_quota_block(lqinode, 0, &bh); | |
627 | if (status) { | |
2205363d JK |
628 | mlog_errno(status); |
629 | mlog(ML_ERROR, "failed to read quota file info header " | |
630 | "(slot=%d type=%d)\n", slot_num, type); | |
631 | goto out_lock; | |
632 | } | |
633 | ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + | |
634 | OCFS2_LOCAL_INFO_OFF); | |
635 | /* Is recovery still needed? */ | |
636 | flags = le32_to_cpu(ldinfo->dqi_flags); | |
637 | if (!(flags & OLQF_CLEAN)) | |
638 | status = ocfs2_recover_local_quota_file(lqinode, | |
639 | type, | |
640 | rec); | |
641 | /* We don't want to mark file as clean when it is actually | |
642 | * active */ | |
643 | if (slot_num == osb->slot_num) | |
644 | goto out_bh; | |
645 | /* Mark quota file as clean if we are recovering quota file of | |
646 | * some other node. */ | |
0584974a JK |
647 | handle = ocfs2_start_trans(osb, |
648 | OCFS2_LOCAL_QINFO_WRITE_CREDITS); | |
2205363d JK |
649 | if (IS_ERR(handle)) { |
650 | status = PTR_ERR(handle); | |
651 | mlog_errno(status); | |
652 | goto out_bh; | |
653 | } | |
0cf2f763 JB |
654 | status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), |
655 | bh, | |
13723d00 | 656 | OCFS2_JOURNAL_ACCESS_WRITE); |
2205363d JK |
657 | if (status < 0) { |
658 | mlog_errno(status); | |
659 | goto out_trans; | |
660 | } | |
661 | lock_buffer(bh); | |
662 | ldinfo->dqi_flags = cpu_to_le32(flags | OLQF_CLEAN); | |
663 | unlock_buffer(bh); | |
ec20cec7 | 664 | ocfs2_journal_dirty(handle, bh); |
2205363d JK |
665 | out_trans: |
666 | ocfs2_commit_trans(osb, handle); | |
667 | out_bh: | |
668 | brelse(bh); | |
669 | out_lock: | |
670 | ocfs2_inode_unlock(lqinode, 1); | |
671 | out_put: | |
672 | iput(lqinode); | |
673 | if (status < 0) | |
674 | break; | |
675 | } | |
676 | out: | |
677 | mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex); | |
678 | kfree(rec); | |
679 | return status; | |
680 | } | |
681 | ||
9e33d69f JK |
682 | /* Read information header from quota file */ |
683 | static int ocfs2_local_read_info(struct super_block *sb, int type) | |
684 | { | |
685 | struct ocfs2_local_disk_dqinfo *ldinfo; | |
686 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
687 | struct ocfs2_mem_dqinfo *oinfo; | |
688 | struct inode *lqinode = sb_dqopt(sb)->files[type]; | |
689 | int status; | |
690 | struct buffer_head *bh = NULL; | |
2205363d | 691 | struct ocfs2_quota_recovery *rec; |
9e33d69f JK |
692 | int locked = 0; |
693 | ||
b4c30de3 JK |
694 | /* We don't need the lock and we have to acquire quota file locks |
695 | * which will later depend on this lock */ | |
696 | mutex_unlock(&sb_dqopt(sb)->dqio_mutex); | |
b10a0819 JK |
697 | info->dqi_max_spc_limit = 0x7fffffffffffffffLL; |
698 | info->dqi_max_ino_limit = 0x7fffffffffffffffLL; | |
9e33d69f JK |
699 | oinfo = kmalloc(sizeof(struct ocfs2_mem_dqinfo), GFP_NOFS); |
700 | if (!oinfo) { | |
701 | mlog(ML_ERROR, "failed to allocate memory for ocfs2 quota" | |
702 | " info."); | |
703 | goto out_err; | |
704 | } | |
705 | info->dqi_priv = oinfo; | |
706 | oinfo->dqi_type = type; | |
707 | INIT_LIST_HEAD(&oinfo->dqi_chunk); | |
2205363d | 708 | oinfo->dqi_rec = NULL; |
9e33d69f | 709 | oinfo->dqi_lqi_bh = NULL; |
ae4f6ef1 | 710 | oinfo->dqi_libh = NULL; |
9e33d69f JK |
711 | |
712 | status = ocfs2_global_read_info(sb, type); | |
713 | if (status < 0) | |
714 | goto out_err; | |
715 | ||
716 | status = ocfs2_inode_lock(lqinode, &oinfo->dqi_lqi_bh, 1); | |
717 | if (status < 0) { | |
718 | mlog_errno(status); | |
719 | goto out_err; | |
720 | } | |
721 | locked = 1; | |
722 | ||
723 | /* Now read local header */ | |
85eb8b73 JB |
724 | status = ocfs2_read_quota_block(lqinode, 0, &bh); |
725 | if (status) { | |
9e33d69f JK |
726 | mlog_errno(status); |
727 | mlog(ML_ERROR, "failed to read quota file info header " | |
728 | "(type=%d)\n", type); | |
729 | goto out_err; | |
730 | } | |
731 | ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + | |
732 | OCFS2_LOCAL_INFO_OFF); | |
96827adc | 733 | oinfo->dqi_flags = le32_to_cpu(ldinfo->dqi_flags); |
9e33d69f JK |
734 | oinfo->dqi_chunks = le32_to_cpu(ldinfo->dqi_chunks); |
735 | oinfo->dqi_blocks = le32_to_cpu(ldinfo->dqi_blocks); | |
ae4f6ef1 | 736 | oinfo->dqi_libh = bh; |
9e33d69f JK |
737 | |
738 | /* We crashed when using local quota file? */ | |
96827adc | 739 | if (!(oinfo->dqi_flags & OLQF_CLEAN)) { |
2205363d JK |
740 | rec = OCFS2_SB(sb)->quota_rec; |
741 | if (!rec) { | |
742 | rec = ocfs2_alloc_quota_recovery(); | |
743 | if (!rec) { | |
744 | status = -ENOMEM; | |
745 | mlog_errno(status); | |
746 | goto out_err; | |
747 | } | |
748 | OCFS2_SB(sb)->quota_rec = rec; | |
749 | } | |
9e33d69f | 750 | |
2205363d JK |
751 | status = ocfs2_recovery_load_quota(lqinode, ldinfo, type, |
752 | &rec->r_list[type]); | |
753 | if (status < 0) { | |
754 | mlog_errno(status); | |
755 | goto out_err; | |
756 | } | |
757 | } | |
758 | ||
759 | status = ocfs2_load_local_quota_bitmaps(lqinode, | |
9e33d69f JK |
760 | ldinfo, |
761 | &oinfo->dqi_chunk); | |
762 | if (status < 0) { | |
763 | mlog_errno(status); | |
764 | goto out_err; | |
765 | } | |
766 | ||
767 | /* Now mark quota file as used */ | |
96827adc | 768 | oinfo->dqi_flags &= ~OLQF_CLEAN; |
9e33d69f JK |
769 | status = ocfs2_modify_bh(lqinode, bh, olq_update_info, info); |
770 | if (status < 0) { | |
771 | mlog_errno(status); | |
772 | goto out_err; | |
773 | } | |
774 | ||
b4c30de3 | 775 | mutex_lock(&sb_dqopt(sb)->dqio_mutex); |
9e33d69f JK |
776 | return 0; |
777 | out_err: | |
778 | if (oinfo) { | |
779 | iput(oinfo->dqi_gqinode); | |
780 | ocfs2_simple_drop_lockres(OCFS2_SB(sb), &oinfo->dqi_gqlock); | |
781 | ocfs2_lock_res_free(&oinfo->dqi_gqlock); | |
782 | brelse(oinfo->dqi_lqi_bh); | |
783 | if (locked) | |
784 | ocfs2_inode_unlock(lqinode, 1); | |
785 | ocfs2_release_local_quota_bitmaps(&oinfo->dqi_chunk); | |
786 | kfree(oinfo); | |
787 | } | |
788 | brelse(bh); | |
b4c30de3 | 789 | mutex_lock(&sb_dqopt(sb)->dqio_mutex); |
9e33d69f JK |
790 | return -1; |
791 | } | |
792 | ||
793 | /* Write local info to quota file */ | |
794 | static int ocfs2_local_write_info(struct super_block *sb, int type) | |
795 | { | |
796 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
797 | struct buffer_head *bh = ((struct ocfs2_mem_dqinfo *)info->dqi_priv) | |
ae4f6ef1 | 798 | ->dqi_libh; |
9e33d69f JK |
799 | int status; |
800 | ||
801 | status = ocfs2_modify_bh(sb_dqopt(sb)->files[type], bh, olq_update_info, | |
802 | info); | |
803 | if (status < 0) { | |
804 | mlog_errno(status); | |
805 | return -1; | |
806 | } | |
807 | ||
808 | return 0; | |
809 | } | |
810 | ||
811 | /* Release info from memory */ | |
812 | static int ocfs2_local_free_info(struct super_block *sb, int type) | |
813 | { | |
814 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
815 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
816 | struct ocfs2_quota_chunk *chunk; | |
817 | struct ocfs2_local_disk_chunk *dchunk; | |
818 | int mark_clean = 1, len; | |
819 | int status; | |
820 | ||
821 | iput(oinfo->dqi_gqinode); | |
822 | ocfs2_simple_drop_lockres(OCFS2_SB(sb), &oinfo->dqi_gqlock); | |
823 | ocfs2_lock_res_free(&oinfo->dqi_gqlock); | |
824 | list_for_each_entry(chunk, &oinfo->dqi_chunk, qc_chunk) { | |
825 | dchunk = (struct ocfs2_local_disk_chunk *) | |
826 | (chunk->qc_headerbh->b_data); | |
827 | if (chunk->qc_num < oinfo->dqi_chunks - 1) { | |
828 | len = ol_chunk_entries(sb); | |
829 | } else { | |
830 | len = (oinfo->dqi_blocks - | |
831 | ol_quota_chunk_block(sb, chunk->qc_num) - 1) | |
832 | * ol_quota_entries_per_block(sb); | |
833 | } | |
834 | /* Not all entries free? Bug! */ | |
835 | if (le32_to_cpu(dchunk->dqc_free) != len) { | |
836 | mlog(ML_ERROR, "releasing quota file with used " | |
837 | "entries (type=%d)\n", type); | |
838 | mark_clean = 0; | |
839 | } | |
840 | } | |
841 | ocfs2_release_local_quota_bitmaps(&oinfo->dqi_chunk); | |
842 | ||
2205363d JK |
843 | /* dqonoff_mutex protects us against racing with recovery thread... */ |
844 | if (oinfo->dqi_rec) { | |
845 | ocfs2_free_quota_recovery(oinfo->dqi_rec); | |
846 | mark_clean = 0; | |
847 | } | |
848 | ||
9e33d69f JK |
849 | if (!mark_clean) |
850 | goto out; | |
851 | ||
852 | /* Mark local file as clean */ | |
96827adc | 853 | oinfo->dqi_flags |= OLQF_CLEAN; |
9e33d69f | 854 | status = ocfs2_modify_bh(sb_dqopt(sb)->files[type], |
ae4f6ef1 | 855 | oinfo->dqi_libh, |
9e33d69f JK |
856 | olq_update_info, |
857 | info); | |
858 | if (status < 0) { | |
859 | mlog_errno(status); | |
860 | goto out; | |
861 | } | |
862 | ||
863 | out: | |
864 | ocfs2_inode_unlock(sb_dqopt(sb)->files[type], 1); | |
ae4f6ef1 | 865 | brelse(oinfo->dqi_libh); |
9e33d69f JK |
866 | brelse(oinfo->dqi_lqi_bh); |
867 | kfree(oinfo); | |
868 | return 0; | |
869 | } | |
870 | ||
871 | static void olq_set_dquot(struct buffer_head *bh, void *private) | |
872 | { | |
873 | struct ocfs2_dquot *od = private; | |
874 | struct ocfs2_local_disk_dqblk *dqblk; | |
875 | struct super_block *sb = od->dq_dquot.dq_sb; | |
876 | ||
877 | dqblk = (struct ocfs2_local_disk_dqblk *)(bh->b_data | |
878 | + ol_dqblk_block_offset(sb, od->dq_local_off)); | |
879 | ||
4c376dca EB |
880 | dqblk->dqb_id = cpu_to_le64(from_kqid(&init_user_ns, |
881 | od->dq_dquot.dq_id)); | |
9e33d69f JK |
882 | spin_lock(&dq_data_lock); |
883 | dqblk->dqb_spacemod = cpu_to_le64(od->dq_dquot.dq_dqb.dqb_curspace - | |
884 | od->dq_origspace); | |
885 | dqblk->dqb_inodemod = cpu_to_le64(od->dq_dquot.dq_dqb.dqb_curinodes - | |
886 | od->dq_originodes); | |
887 | spin_unlock(&dq_data_lock); | |
38877a43 TM |
888 | trace_olq_set_dquot( |
889 | (unsigned long long)le64_to_cpu(dqblk->dqb_spacemod), | |
890 | (unsigned long long)le64_to_cpu(dqblk->dqb_inodemod), | |
4c376dca | 891 | from_kqid(&init_user_ns, od->dq_dquot.dq_id)); |
9e33d69f JK |
892 | } |
893 | ||
894 | /* Write dquot to local quota file */ | |
741e1289 | 895 | int ocfs2_local_write_dquot(struct dquot *dquot) |
9e33d69f JK |
896 | { |
897 | struct super_block *sb = dquot->dq_sb; | |
898 | struct ocfs2_dquot *od = OCFS2_DQUOT(dquot); | |
f64dd44e | 899 | struct buffer_head *bh; |
4c376dca | 900 | struct inode *lqinode = sb_dqopt(sb)->files[dquot->dq_id.type]; |
9e33d69f JK |
901 | int status; |
902 | ||
f64dd44e JK |
903 | status = ocfs2_read_quota_phys_block(lqinode, od->dq_local_phys_blk, |
904 | &bh); | |
85eb8b73 | 905 | if (status) { |
9e33d69f JK |
906 | mlog_errno(status); |
907 | goto out; | |
908 | } | |
f64dd44e | 909 | status = ocfs2_modify_bh(lqinode, bh, olq_set_dquot, od); |
9e33d69f JK |
910 | if (status < 0) { |
911 | mlog_errno(status); | |
912 | goto out; | |
913 | } | |
914 | out: | |
915 | brelse(bh); | |
916 | return status; | |
917 | } | |
918 | ||
919 | /* Find free entry in local quota file */ | |
920 | static struct ocfs2_quota_chunk *ocfs2_find_free_entry(struct super_block *sb, | |
921 | int type, | |
922 | int *offset) | |
923 | { | |
924 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
925 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
926 | struct ocfs2_quota_chunk *chunk; | |
927 | struct ocfs2_local_disk_chunk *dchunk; | |
928 | int found = 0, len; | |
929 | ||
930 | list_for_each_entry(chunk, &oinfo->dqi_chunk, qc_chunk) { | |
931 | dchunk = (struct ocfs2_local_disk_chunk *) | |
932 | chunk->qc_headerbh->b_data; | |
933 | if (le32_to_cpu(dchunk->dqc_free) > 0) { | |
934 | found = 1; | |
935 | break; | |
936 | } | |
937 | } | |
938 | if (!found) | |
939 | return NULL; | |
940 | ||
941 | if (chunk->qc_num < oinfo->dqi_chunks - 1) { | |
942 | len = ol_chunk_entries(sb); | |
943 | } else { | |
944 | len = (oinfo->dqi_blocks - | |
945 | ol_quota_chunk_block(sb, chunk->qc_num) - 1) | |
946 | * ol_quota_entries_per_block(sb); | |
947 | } | |
948 | ||
93925579 | 949 | found = ocfs2_find_next_zero_bit_unaligned(dchunk->dqc_bitmap, len, 0); |
9e33d69f JK |
950 | /* We failed? */ |
951 | if (found == len) { | |
952 | mlog(ML_ERROR, "Did not find empty entry in chunk %d with %u" | |
953 | " entries free (type=%d)\n", chunk->qc_num, | |
954 | le32_to_cpu(dchunk->dqc_free), type); | |
955 | return ERR_PTR(-EIO); | |
956 | } | |
957 | *offset = found; | |
958 | return chunk; | |
959 | } | |
960 | ||
961 | /* Add new chunk to the local quota file */ | |
962 | static struct ocfs2_quota_chunk *ocfs2_local_quota_add_chunk( | |
963 | struct super_block *sb, | |
964 | int type, | |
965 | int *offset) | |
966 | { | |
967 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
968 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
969 | struct inode *lqinode = sb_dqopt(sb)->files[type]; | |
970 | struct ocfs2_quota_chunk *chunk = NULL; | |
971 | struct ocfs2_local_disk_chunk *dchunk; | |
972 | int status; | |
973 | handle_t *handle; | |
0e7f387b | 974 | struct buffer_head *bh = NULL, *dbh = NULL; |
9e33d69f JK |
975 | u64 p_blkno; |
976 | ||
977 | /* We are protected by dqio_sem so no locking needed */ | |
5693486b | 978 | status = ocfs2_extend_no_holes(lqinode, NULL, |
f17c20dd JB |
979 | i_size_read(lqinode) + 2 * sb->s_blocksize, |
980 | i_size_read(lqinode)); | |
9e33d69f JK |
981 | if (status < 0) { |
982 | mlog_errno(status); | |
983 | goto out; | |
984 | } | |
985 | status = ocfs2_simple_size_update(lqinode, oinfo->dqi_lqi_bh, | |
f17c20dd | 986 | i_size_read(lqinode) + 2 * sb->s_blocksize); |
9e33d69f JK |
987 | if (status < 0) { |
988 | mlog_errno(status); | |
989 | goto out; | |
990 | } | |
991 | ||
992 | chunk = kmem_cache_alloc(ocfs2_qf_chunk_cachep, GFP_NOFS); | |
993 | if (!chunk) { | |
994 | status = -ENOMEM; | |
995 | mlog_errno(status); | |
996 | goto out; | |
997 | } | |
0584974a JK |
998 | /* Local quota info and two new blocks we initialize */ |
999 | handle = ocfs2_start_trans(OCFS2_SB(sb), | |
1000 | OCFS2_LOCAL_QINFO_WRITE_CREDITS + | |
1001 | 2 * OCFS2_QUOTA_BLOCK_UPDATE_CREDITS); | |
0e7f387b JK |
1002 | if (IS_ERR(handle)) { |
1003 | status = PTR_ERR(handle); | |
1004 | mlog_errno(status); | |
1005 | goto out; | |
1006 | } | |
9e33d69f | 1007 | |
0e7f387b | 1008 | /* Initialize chunk header */ |
9e33d69f JK |
1009 | status = ocfs2_extent_map_get_blocks(lqinode, oinfo->dqi_blocks, |
1010 | &p_blkno, NULL, NULL); | |
9e33d69f JK |
1011 | if (status < 0) { |
1012 | mlog_errno(status); | |
0e7f387b | 1013 | goto out_trans; |
9e33d69f JK |
1014 | } |
1015 | bh = sb_getblk(sb, p_blkno); | |
1016 | if (!bh) { | |
1017 | status = -ENOMEM; | |
1018 | mlog_errno(status); | |
0e7f387b | 1019 | goto out_trans; |
9e33d69f JK |
1020 | } |
1021 | dchunk = (struct ocfs2_local_disk_chunk *)bh->b_data; | |
8cb471e8 | 1022 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(lqinode), bh); |
0cf2f763 | 1023 | status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), bh, |
0e7f387b | 1024 | OCFS2_JOURNAL_ACCESS_CREATE); |
9e33d69f JK |
1025 | if (status < 0) { |
1026 | mlog_errno(status); | |
1027 | goto out_trans; | |
1028 | } | |
1029 | lock_buffer(bh); | |
df32b334 | 1030 | dchunk->dqc_free = cpu_to_le32(ol_quota_entries_per_block(sb)); |
9e33d69f JK |
1031 | memset(dchunk->dqc_bitmap, 0, |
1032 | sb->s_blocksize - sizeof(struct ocfs2_local_disk_chunk) - | |
1033 | OCFS2_QBLK_RESERVED_SPACE); | |
9e33d69f | 1034 | unlock_buffer(bh); |
ec20cec7 | 1035 | ocfs2_journal_dirty(handle, bh); |
9e33d69f | 1036 | |
0e7f387b | 1037 | /* Initialize new block with structures */ |
0e7f387b JK |
1038 | status = ocfs2_extent_map_get_blocks(lqinode, oinfo->dqi_blocks + 1, |
1039 | &p_blkno, NULL, NULL); | |
0e7f387b JK |
1040 | if (status < 0) { |
1041 | mlog_errno(status); | |
1042 | goto out_trans; | |
1043 | } | |
1044 | dbh = sb_getblk(sb, p_blkno); | |
1045 | if (!dbh) { | |
1046 | status = -ENOMEM; | |
1047 | mlog_errno(status); | |
1048 | goto out_trans; | |
1049 | } | |
8cb471e8 | 1050 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(lqinode), dbh); |
0cf2f763 | 1051 | status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), dbh, |
0e7f387b JK |
1052 | OCFS2_JOURNAL_ACCESS_CREATE); |
1053 | if (status < 0) { | |
1054 | mlog_errno(status); | |
1055 | goto out_trans; | |
1056 | } | |
1057 | lock_buffer(dbh); | |
1058 | memset(dbh->b_data, 0, sb->s_blocksize - OCFS2_QBLK_RESERVED_SPACE); | |
1059 | unlock_buffer(dbh); | |
ec20cec7 | 1060 | ocfs2_journal_dirty(handle, dbh); |
0e7f387b JK |
1061 | |
1062 | /* Update local quotafile info */ | |
9e33d69f JK |
1063 | oinfo->dqi_blocks += 2; |
1064 | oinfo->dqi_chunks++; | |
1065 | status = ocfs2_local_write_info(sb, type); | |
1066 | if (status < 0) { | |
1067 | mlog_errno(status); | |
1068 | goto out_trans; | |
1069 | } | |
1070 | status = ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1071 | if (status < 0) { | |
1072 | mlog_errno(status); | |
1073 | goto out; | |
1074 | } | |
1075 | ||
1076 | list_add_tail(&chunk->qc_chunk, &oinfo->dqi_chunk); | |
1077 | chunk->qc_num = list_entry(chunk->qc_chunk.prev, | |
1078 | struct ocfs2_quota_chunk, | |
1079 | qc_chunk)->qc_num + 1; | |
1080 | chunk->qc_headerbh = bh; | |
1081 | *offset = 0; | |
1082 | return chunk; | |
1083 | out_trans: | |
1084 | ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1085 | out: | |
1086 | brelse(bh); | |
0e7f387b | 1087 | brelse(dbh); |
9e33d69f JK |
1088 | kmem_cache_free(ocfs2_qf_chunk_cachep, chunk); |
1089 | return ERR_PTR(status); | |
1090 | } | |
1091 | ||
1092 | /* Find free entry in local quota file */ | |
1093 | static struct ocfs2_quota_chunk *ocfs2_extend_local_quota_file( | |
1094 | struct super_block *sb, | |
1095 | int type, | |
1096 | int *offset) | |
1097 | { | |
1098 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
1099 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
1100 | struct ocfs2_quota_chunk *chunk; | |
1101 | struct inode *lqinode = sb_dqopt(sb)->files[type]; | |
1102 | struct ocfs2_local_disk_chunk *dchunk; | |
1103 | int epb = ol_quota_entries_per_block(sb); | |
1104 | unsigned int chunk_blocks; | |
0e7f387b JK |
1105 | struct buffer_head *bh; |
1106 | u64 p_blkno; | |
9e33d69f JK |
1107 | int status; |
1108 | handle_t *handle; | |
1109 | ||
1110 | if (list_empty(&oinfo->dqi_chunk)) | |
1111 | return ocfs2_local_quota_add_chunk(sb, type, offset); | |
1112 | /* Is the last chunk full? */ | |
1113 | chunk = list_entry(oinfo->dqi_chunk.prev, | |
1114 | struct ocfs2_quota_chunk, qc_chunk); | |
1115 | chunk_blocks = oinfo->dqi_blocks - | |
1116 | ol_quota_chunk_block(sb, chunk->qc_num) - 1; | |
1117 | if (ol_chunk_blocks(sb) == chunk_blocks) | |
1118 | return ocfs2_local_quota_add_chunk(sb, type, offset); | |
1119 | ||
1120 | /* We are protected by dqio_sem so no locking needed */ | |
5693486b | 1121 | status = ocfs2_extend_no_holes(lqinode, NULL, |
f17c20dd JB |
1122 | i_size_read(lqinode) + sb->s_blocksize, |
1123 | i_size_read(lqinode)); | |
9e33d69f JK |
1124 | if (status < 0) { |
1125 | mlog_errno(status); | |
1126 | goto out; | |
1127 | } | |
1128 | status = ocfs2_simple_size_update(lqinode, oinfo->dqi_lqi_bh, | |
f17c20dd | 1129 | i_size_read(lqinode) + sb->s_blocksize); |
9e33d69f JK |
1130 | if (status < 0) { |
1131 | mlog_errno(status); | |
1132 | goto out; | |
1133 | } | |
0e7f387b JK |
1134 | |
1135 | /* Get buffer from the just added block */ | |
0e7f387b JK |
1136 | status = ocfs2_extent_map_get_blocks(lqinode, oinfo->dqi_blocks, |
1137 | &p_blkno, NULL, NULL); | |
0e7f387b JK |
1138 | if (status < 0) { |
1139 | mlog_errno(status); | |
1140 | goto out; | |
1141 | } | |
1142 | bh = sb_getblk(sb, p_blkno); | |
1143 | if (!bh) { | |
1144 | status = -ENOMEM; | |
1145 | mlog_errno(status); | |
1146 | goto out; | |
1147 | } | |
8cb471e8 | 1148 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(lqinode), bh); |
0e7f387b | 1149 | |
0584974a JK |
1150 | /* Local quota info, chunk header and the new block we initialize */ |
1151 | handle = ocfs2_start_trans(OCFS2_SB(sb), | |
1152 | OCFS2_LOCAL_QINFO_WRITE_CREDITS + | |
1153 | 2 * OCFS2_QUOTA_BLOCK_UPDATE_CREDITS); | |
9e33d69f JK |
1154 | if (IS_ERR(handle)) { |
1155 | status = PTR_ERR(handle); | |
1156 | mlog_errno(status); | |
1157 | goto out; | |
1158 | } | |
0e7f387b | 1159 | /* Zero created block */ |
0cf2f763 | 1160 | status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), bh, |
0e7f387b JK |
1161 | OCFS2_JOURNAL_ACCESS_CREATE); |
1162 | if (status < 0) { | |
1163 | mlog_errno(status); | |
1164 | goto out_trans; | |
1165 | } | |
1166 | lock_buffer(bh); | |
1167 | memset(bh->b_data, 0, sb->s_blocksize); | |
1168 | unlock_buffer(bh); | |
ec20cec7 JB |
1169 | ocfs2_journal_dirty(handle, bh); |
1170 | ||
0e7f387b | 1171 | /* Update chunk header */ |
0cf2f763 JB |
1172 | status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), |
1173 | chunk->qc_headerbh, | |
9e33d69f JK |
1174 | OCFS2_JOURNAL_ACCESS_WRITE); |
1175 | if (status < 0) { | |
1176 | mlog_errno(status); | |
1177 | goto out_trans; | |
1178 | } | |
1179 | ||
1180 | dchunk = (struct ocfs2_local_disk_chunk *)chunk->qc_headerbh->b_data; | |
1181 | lock_buffer(chunk->qc_headerbh); | |
1182 | le32_add_cpu(&dchunk->dqc_free, ol_quota_entries_per_block(sb)); | |
1183 | unlock_buffer(chunk->qc_headerbh); | |
ec20cec7 JB |
1184 | ocfs2_journal_dirty(handle, chunk->qc_headerbh); |
1185 | ||
0e7f387b | 1186 | /* Update file header */ |
9e33d69f JK |
1187 | oinfo->dqi_blocks++; |
1188 | status = ocfs2_local_write_info(sb, type); | |
1189 | if (status < 0) { | |
1190 | mlog_errno(status); | |
1191 | goto out_trans; | |
1192 | } | |
1193 | ||
1194 | status = ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1195 | if (status < 0) { | |
1196 | mlog_errno(status); | |
1197 | goto out; | |
1198 | } | |
1199 | *offset = chunk_blocks * epb; | |
1200 | return chunk; | |
1201 | out_trans: | |
1202 | ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1203 | out: | |
1204 | return ERR_PTR(status); | |
1205 | } | |
1206 | ||
df32b334 | 1207 | static void olq_alloc_dquot(struct buffer_head *bh, void *private) |
9e33d69f JK |
1208 | { |
1209 | int *offset = private; | |
1210 | struct ocfs2_local_disk_chunk *dchunk; | |
1211 | ||
1212 | dchunk = (struct ocfs2_local_disk_chunk *)bh->b_data; | |
93925579 | 1213 | ocfs2_set_bit_unaligned(*offset, dchunk->dqc_bitmap); |
9e33d69f JK |
1214 | le32_add_cpu(&dchunk->dqc_free, -1); |
1215 | } | |
1216 | ||
1217 | /* Create dquot in the local file for given id */ | |
fb8dd8d7 | 1218 | int ocfs2_create_local_dquot(struct dquot *dquot) |
9e33d69f JK |
1219 | { |
1220 | struct super_block *sb = dquot->dq_sb; | |
4c376dca | 1221 | int type = dquot->dq_id.type; |
9e33d69f JK |
1222 | struct inode *lqinode = sb_dqopt(sb)->files[type]; |
1223 | struct ocfs2_quota_chunk *chunk; | |
1224 | struct ocfs2_dquot *od = OCFS2_DQUOT(dquot); | |
1225 | int offset; | |
1226 | int status; | |
f64dd44e | 1227 | u64 pcount; |
9e33d69f | 1228 | |
f64dd44e | 1229 | down_write(&OCFS2_I(lqinode)->ip_alloc_sem); |
9e33d69f JK |
1230 | chunk = ocfs2_find_free_entry(sb, type, &offset); |
1231 | if (!chunk) { | |
1232 | chunk = ocfs2_extend_local_quota_file(sb, type, &offset); | |
f64dd44e JK |
1233 | if (IS_ERR(chunk)) { |
1234 | status = PTR_ERR(chunk); | |
1235 | goto out; | |
1236 | } | |
9e33d69f | 1237 | } else if (IS_ERR(chunk)) { |
f64dd44e JK |
1238 | status = PTR_ERR(chunk); |
1239 | goto out; | |
9e33d69f JK |
1240 | } |
1241 | od->dq_local_off = ol_dqblk_off(sb, chunk->qc_num, offset); | |
1242 | od->dq_chunk = chunk; | |
f64dd44e JK |
1243 | status = ocfs2_extent_map_get_blocks(lqinode, |
1244 | ol_dqblk_block(sb, chunk->qc_num, offset), | |
1245 | &od->dq_local_phys_blk, | |
1246 | &pcount, | |
1247 | NULL); | |
9e33d69f JK |
1248 | |
1249 | /* Initialize dquot structure on disk */ | |
1250 | status = ocfs2_local_write_dquot(dquot); | |
1251 | if (status < 0) { | |
1252 | mlog_errno(status); | |
1253 | goto out; | |
1254 | } | |
1255 | ||
1256 | /* Mark structure as allocated */ | |
1257 | status = ocfs2_modify_bh(lqinode, chunk->qc_headerbh, olq_alloc_dquot, | |
1258 | &offset); | |
1259 | if (status < 0) { | |
1260 | mlog_errno(status); | |
1261 | goto out; | |
1262 | } | |
1263 | out: | |
f64dd44e | 1264 | up_write(&OCFS2_I(lqinode)->ip_alloc_sem); |
9e33d69f JK |
1265 | return status; |
1266 | } | |
1267 | ||
fb8dd8d7 JK |
1268 | /* |
1269 | * Release dquot structure from local quota file. ocfs2_release_dquot() has | |
1270 | * already started a transaction and written all changes to global quota file | |
1271 | */ | |
1272 | int ocfs2_local_release_dquot(handle_t *handle, struct dquot *dquot) | |
9e33d69f JK |
1273 | { |
1274 | int status; | |
4c376dca | 1275 | int type = dquot->dq_id.type; |
9e33d69f JK |
1276 | struct ocfs2_dquot *od = OCFS2_DQUOT(dquot); |
1277 | struct super_block *sb = dquot->dq_sb; | |
1278 | struct ocfs2_local_disk_chunk *dchunk; | |
1279 | int offset; | |
9e33d69f | 1280 | |
0cf2f763 JB |
1281 | status = ocfs2_journal_access_dq(handle, |
1282 | INODE_CACHE(sb_dqopt(sb)->files[type]), | |
9e33d69f JK |
1283 | od->dq_chunk->qc_headerbh, OCFS2_JOURNAL_ACCESS_WRITE); |
1284 | if (status < 0) { | |
1285 | mlog_errno(status); | |
1286 | goto out; | |
1287 | } | |
1288 | offset = ol_dqblk_chunk_off(sb, od->dq_chunk->qc_num, | |
1289 | od->dq_local_off); | |
1290 | dchunk = (struct ocfs2_local_disk_chunk *) | |
1291 | (od->dq_chunk->qc_headerbh->b_data); | |
1292 | /* Mark structure as freed */ | |
1293 | lock_buffer(od->dq_chunk->qc_headerbh); | |
93925579 | 1294 | ocfs2_clear_bit_unaligned(offset, dchunk->dqc_bitmap); |
9e33d69f JK |
1295 | le32_add_cpu(&dchunk->dqc_free, 1); |
1296 | unlock_buffer(od->dq_chunk->qc_headerbh); | |
ec20cec7 JB |
1297 | ocfs2_journal_dirty(handle, od->dq_chunk->qc_headerbh); |
1298 | ||
9e33d69f | 1299 | out: |
9e33d69f JK |
1300 | return status; |
1301 | } | |
1302 | ||
1472da5f | 1303 | static const struct quota_format_ops ocfs2_format_ops = { |
9e33d69f JK |
1304 | .check_quota_file = ocfs2_local_check_quota_file, |
1305 | .read_file_info = ocfs2_local_read_info, | |
1306 | .write_file_info = ocfs2_global_write_info, | |
1307 | .free_file_info = ocfs2_local_free_info, | |
9e33d69f JK |
1308 | }; |
1309 | ||
1310 | struct quota_format_type ocfs2_quota_format = { | |
1311 | .qf_fmt_id = QFMT_OCFS2, | |
1312 | .qf_ops = &ocfs2_format_ops, | |
1313 | .qf_owner = THIS_MODULE | |
1314 | }; |