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, | |
141 | "Quota file %llu is probably corrupted! Requested " | |
142 | "to read block %Lu but file has size only %Lu\n", | |
143 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
144 | (unsigned long long)v_block, | |
145 | (unsigned long long)i_size_read(inode)); | |
146 | return -EIO; | |
147 | } | |
148 | rc = ocfs2_read_virt_blocks(inode, v_block, 1, &tmp, 0, | |
149 | ocfs2_validate_quota_block); | |
150 | if (rc) | |
151 | mlog_errno(rc); | |
152 | ||
153 | /* If ocfs2_read_virt_blocks() got us a new bh, pass it up. */ | |
154 | if (!rc && !*bh) | |
155 | *bh = tmp; | |
156 | ||
157 | return rc; | |
158 | } | |
159 | ||
9e33d69f JK |
160 | /* Check whether we understand format of quota files */ |
161 | static int ocfs2_local_check_quota_file(struct super_block *sb, int type) | |
162 | { | |
52362810 JK |
163 | unsigned int lmagics[OCFS2_MAXQUOTAS] = OCFS2_LOCAL_QMAGICS; |
164 | unsigned int lversions[OCFS2_MAXQUOTAS] = OCFS2_LOCAL_QVERSIONS; | |
165 | unsigned int gmagics[OCFS2_MAXQUOTAS] = OCFS2_GLOBAL_QMAGICS; | |
166 | unsigned int gversions[OCFS2_MAXQUOTAS] = OCFS2_GLOBAL_QVERSIONS; | |
167 | unsigned int ino[OCFS2_MAXQUOTAS] = { USER_QUOTA_SYSTEM_INODE, | |
168 | GROUP_QUOTA_SYSTEM_INODE }; | |
85eb8b73 | 169 | struct buffer_head *bh = NULL; |
9e33d69f JK |
170 | struct inode *linode = sb_dqopt(sb)->files[type]; |
171 | struct inode *ginode = NULL; | |
172 | struct ocfs2_disk_dqheader *dqhead; | |
173 | int status, ret = 0; | |
174 | ||
175 | /* First check whether we understand local quota file */ | |
85eb8b73 JB |
176 | status = ocfs2_read_quota_block(linode, 0, &bh); |
177 | if (status) { | |
9e33d69f JK |
178 | mlog_errno(status); |
179 | mlog(ML_ERROR, "failed to read quota file header (type=%d)\n", | |
180 | type); | |
181 | goto out_err; | |
182 | } | |
183 | dqhead = (struct ocfs2_disk_dqheader *)(bh->b_data); | |
184 | if (le32_to_cpu(dqhead->dqh_magic) != lmagics[type]) { | |
185 | mlog(ML_ERROR, "quota file magic does not match (%u != %u)," | |
186 | " type=%d\n", le32_to_cpu(dqhead->dqh_magic), | |
187 | lmagics[type], type); | |
188 | goto out_err; | |
189 | } | |
190 | if (le32_to_cpu(dqhead->dqh_version) != lversions[type]) { | |
191 | mlog(ML_ERROR, "quota file version does not match (%u != %u)," | |
192 | " type=%d\n", le32_to_cpu(dqhead->dqh_version), | |
193 | lversions[type], type); | |
194 | goto out_err; | |
195 | } | |
196 | brelse(bh); | |
197 | bh = NULL; | |
198 | ||
199 | /* Next check whether we understand global quota file */ | |
200 | ginode = ocfs2_get_system_file_inode(OCFS2_SB(sb), ino[type], | |
201 | OCFS2_INVALID_SLOT); | |
202 | if (!ginode) { | |
203 | mlog(ML_ERROR, "cannot get global quota file inode " | |
204 | "(type=%d)\n", type); | |
205 | goto out_err; | |
206 | } | |
207 | /* Since the header is read only, we don't care about locking */ | |
85eb8b73 JB |
208 | status = ocfs2_read_quota_block(ginode, 0, &bh); |
209 | if (status) { | |
9e33d69f JK |
210 | mlog_errno(status); |
211 | mlog(ML_ERROR, "failed to read global quota file header " | |
212 | "(type=%d)\n", type); | |
213 | goto out_err; | |
214 | } | |
215 | dqhead = (struct ocfs2_disk_dqheader *)(bh->b_data); | |
216 | if (le32_to_cpu(dqhead->dqh_magic) != gmagics[type]) { | |
217 | mlog(ML_ERROR, "global quota file magic does not match " | |
218 | "(%u != %u), type=%d\n", | |
219 | le32_to_cpu(dqhead->dqh_magic), gmagics[type], type); | |
220 | goto out_err; | |
221 | } | |
222 | if (le32_to_cpu(dqhead->dqh_version) != gversions[type]) { | |
223 | mlog(ML_ERROR, "global quota file version does not match " | |
224 | "(%u != %u), type=%d\n", | |
225 | le32_to_cpu(dqhead->dqh_version), gversions[type], | |
226 | type); | |
227 | goto out_err; | |
228 | } | |
229 | ||
230 | ret = 1; | |
231 | out_err: | |
232 | brelse(bh); | |
233 | iput(ginode); | |
234 | return ret; | |
235 | } | |
236 | ||
237 | /* Release given list of quota file chunks */ | |
238 | static void ocfs2_release_local_quota_bitmaps(struct list_head *head) | |
239 | { | |
240 | struct ocfs2_quota_chunk *pos, *next; | |
241 | ||
242 | list_for_each_entry_safe(pos, next, head, qc_chunk) { | |
243 | list_del(&pos->qc_chunk); | |
244 | brelse(pos->qc_headerbh); | |
245 | kmem_cache_free(ocfs2_qf_chunk_cachep, pos); | |
246 | } | |
247 | } | |
248 | ||
249 | /* Load quota bitmaps into memory */ | |
250 | static int ocfs2_load_local_quota_bitmaps(struct inode *inode, | |
251 | struct ocfs2_local_disk_dqinfo *ldinfo, | |
252 | struct list_head *head) | |
253 | { | |
254 | struct ocfs2_quota_chunk *newchunk; | |
255 | int i, status; | |
256 | ||
257 | INIT_LIST_HEAD(head); | |
258 | for (i = 0; i < le32_to_cpu(ldinfo->dqi_chunks); i++) { | |
259 | newchunk = kmem_cache_alloc(ocfs2_qf_chunk_cachep, GFP_NOFS); | |
260 | if (!newchunk) { | |
261 | ocfs2_release_local_quota_bitmaps(head); | |
262 | return -ENOMEM; | |
263 | } | |
264 | newchunk->qc_num = i; | |
85eb8b73 JB |
265 | newchunk->qc_headerbh = NULL; |
266 | status = ocfs2_read_quota_block(inode, | |
9e33d69f | 267 | ol_quota_chunk_block(inode->i_sb, i), |
85eb8b73 JB |
268 | &newchunk->qc_headerbh); |
269 | if (status) { | |
9e33d69f JK |
270 | mlog_errno(status); |
271 | kmem_cache_free(ocfs2_qf_chunk_cachep, newchunk); | |
272 | ocfs2_release_local_quota_bitmaps(head); | |
273 | return status; | |
274 | } | |
275 | list_add_tail(&newchunk->qc_chunk, head); | |
276 | } | |
277 | return 0; | |
278 | } | |
279 | ||
280 | static void olq_update_info(struct buffer_head *bh, void *private) | |
281 | { | |
282 | struct mem_dqinfo *info = private; | |
283 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
284 | struct ocfs2_local_disk_dqinfo *ldinfo; | |
285 | ||
286 | ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + | |
287 | OCFS2_LOCAL_INFO_OFF); | |
288 | spin_lock(&dq_data_lock); | |
96827adc | 289 | ldinfo->dqi_flags = cpu_to_le32(oinfo->dqi_flags); |
9e33d69f JK |
290 | ldinfo->dqi_chunks = cpu_to_le32(oinfo->dqi_chunks); |
291 | ldinfo->dqi_blocks = cpu_to_le32(oinfo->dqi_blocks); | |
292 | spin_unlock(&dq_data_lock); | |
293 | } | |
294 | ||
2205363d JK |
295 | static int ocfs2_add_recovery_chunk(struct super_block *sb, |
296 | struct ocfs2_local_disk_chunk *dchunk, | |
297 | int chunk, | |
298 | struct list_head *head) | |
299 | { | |
300 | struct ocfs2_recovery_chunk *rc; | |
301 | ||
302 | rc = kmalloc(sizeof(struct ocfs2_recovery_chunk), GFP_NOFS); | |
303 | if (!rc) | |
304 | return -ENOMEM; | |
305 | rc->rc_chunk = chunk; | |
306 | rc->rc_bitmap = kmalloc(sb->s_blocksize, GFP_NOFS); | |
307 | if (!rc->rc_bitmap) { | |
308 | kfree(rc); | |
309 | return -ENOMEM; | |
310 | } | |
311 | memcpy(rc->rc_bitmap, dchunk->dqc_bitmap, | |
312 | (ol_chunk_entries(sb) + 7) >> 3); | |
313 | list_add_tail(&rc->rc_list, head); | |
314 | return 0; | |
315 | } | |
316 | ||
317 | static void free_recovery_list(struct list_head *head) | |
318 | { | |
319 | struct ocfs2_recovery_chunk *next; | |
320 | struct ocfs2_recovery_chunk *rchunk; | |
321 | ||
322 | list_for_each_entry_safe(rchunk, next, head, rc_list) { | |
323 | list_del(&rchunk->rc_list); | |
324 | kfree(rchunk->rc_bitmap); | |
325 | kfree(rchunk); | |
326 | } | |
327 | } | |
328 | ||
329 | void ocfs2_free_quota_recovery(struct ocfs2_quota_recovery *rec) | |
330 | { | |
331 | int type; | |
332 | ||
52362810 | 333 | for (type = 0; type < OCFS2_MAXQUOTAS; type++) |
2205363d JK |
334 | free_recovery_list(&(rec->r_list[type])); |
335 | kfree(rec); | |
336 | } | |
337 | ||
338 | /* Load entries in our quota file we have to recover*/ | |
339 | static int ocfs2_recovery_load_quota(struct inode *lqinode, | |
340 | struct ocfs2_local_disk_dqinfo *ldinfo, | |
341 | int type, | |
342 | struct list_head *head) | |
343 | { | |
344 | struct super_block *sb = lqinode->i_sb; | |
345 | struct buffer_head *hbh; | |
346 | struct ocfs2_local_disk_chunk *dchunk; | |
347 | int i, chunks = le32_to_cpu(ldinfo->dqi_chunks); | |
348 | int status = 0; | |
349 | ||
350 | for (i = 0; i < chunks; i++) { | |
85eb8b73 JB |
351 | hbh = NULL; |
352 | status = ocfs2_read_quota_block(lqinode, | |
353 | ol_quota_chunk_block(sb, i), | |
354 | &hbh); | |
355 | if (status) { | |
2205363d JK |
356 | mlog_errno(status); |
357 | break; | |
358 | } | |
359 | dchunk = (struct ocfs2_local_disk_chunk *)hbh->b_data; | |
360 | if (le32_to_cpu(dchunk->dqc_free) < ol_chunk_entries(sb)) | |
361 | status = ocfs2_add_recovery_chunk(sb, dchunk, i, head); | |
362 | brelse(hbh); | |
363 | if (status < 0) | |
364 | break; | |
365 | } | |
366 | if (status < 0) | |
367 | free_recovery_list(head); | |
368 | return status; | |
369 | } | |
370 | ||
371 | static struct ocfs2_quota_recovery *ocfs2_alloc_quota_recovery(void) | |
372 | { | |
373 | int type; | |
374 | struct ocfs2_quota_recovery *rec; | |
375 | ||
376 | rec = kmalloc(sizeof(struct ocfs2_quota_recovery), GFP_NOFS); | |
377 | if (!rec) | |
378 | return NULL; | |
52362810 | 379 | for (type = 0; type < OCFS2_MAXQUOTAS; type++) |
2205363d JK |
380 | INIT_LIST_HEAD(&(rec->r_list[type])); |
381 | return rec; | |
382 | } | |
383 | ||
384 | /* Load information we need for quota recovery into memory */ | |
385 | struct ocfs2_quota_recovery *ocfs2_begin_quota_recovery( | |
386 | struct ocfs2_super *osb, | |
387 | int slot_num) | |
388 | { | |
52362810 JK |
389 | unsigned int feature[OCFS2_MAXQUOTAS] = { |
390 | OCFS2_FEATURE_RO_COMPAT_USRQUOTA, | |
391 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA}; | |
392 | unsigned int ino[OCFS2_MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE, | |
393 | LOCAL_GROUP_QUOTA_SYSTEM_INODE }; | |
2205363d JK |
394 | struct super_block *sb = osb->sb; |
395 | struct ocfs2_local_disk_dqinfo *ldinfo; | |
396 | struct inode *lqinode; | |
397 | struct buffer_head *bh; | |
398 | int type; | |
399 | int status = 0; | |
400 | struct ocfs2_quota_recovery *rec; | |
401 | ||
619c200d SM |
402 | printk(KERN_NOTICE "ocfs2: Beginning quota recovery on device (%s) for " |
403 | "slot %u\n", osb->dev_str, slot_num); | |
404 | ||
2205363d JK |
405 | rec = ocfs2_alloc_quota_recovery(); |
406 | if (!rec) | |
407 | return ERR_PTR(-ENOMEM); | |
408 | /* First init... */ | |
409 | ||
52362810 | 410 | for (type = 0; type < OCFS2_MAXQUOTAS; type++) { |
2205363d JK |
411 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type])) |
412 | continue; | |
413 | /* At this point, journal of the slot is already replayed so | |
414 | * we can trust metadata and data of the quota file */ | |
415 | lqinode = ocfs2_get_system_file_inode(osb, ino[type], slot_num); | |
416 | if (!lqinode) { | |
417 | status = -ENOENT; | |
418 | goto out; | |
419 | } | |
420 | status = ocfs2_inode_lock_full(lqinode, NULL, 1, | |
421 | OCFS2_META_LOCK_RECOVERY); | |
422 | if (status < 0) { | |
423 | mlog_errno(status); | |
424 | goto out_put; | |
425 | } | |
426 | /* Now read local header */ | |
85eb8b73 JB |
427 | bh = NULL; |
428 | status = ocfs2_read_quota_block(lqinode, 0, &bh); | |
429 | if (status) { | |
2205363d JK |
430 | mlog_errno(status); |
431 | mlog(ML_ERROR, "failed to read quota file info header " | |
432 | "(slot=%d type=%d)\n", slot_num, type); | |
433 | goto out_lock; | |
434 | } | |
435 | ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + | |
436 | OCFS2_LOCAL_INFO_OFF); | |
437 | status = ocfs2_recovery_load_quota(lqinode, ldinfo, type, | |
438 | &rec->r_list[type]); | |
439 | brelse(bh); | |
440 | out_lock: | |
441 | ocfs2_inode_unlock(lqinode, 1); | |
442 | out_put: | |
443 | iput(lqinode); | |
444 | if (status < 0) | |
445 | break; | |
446 | } | |
447 | out: | |
448 | if (status < 0) { | |
449 | ocfs2_free_quota_recovery(rec); | |
450 | rec = ERR_PTR(status); | |
451 | } | |
452 | return rec; | |
453 | } | |
454 | ||
455 | /* Sync changes in local quota file into global quota file and | |
456 | * reinitialize local quota file. | |
457 | * The function expects local quota file to be already locked and | |
458 | * dqonoff_mutex locked. */ | |
459 | static int ocfs2_recover_local_quota_file(struct inode *lqinode, | |
460 | int type, | |
461 | struct ocfs2_quota_recovery *rec) | |
462 | { | |
463 | struct super_block *sb = lqinode->i_sb; | |
464 | struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv; | |
465 | struct ocfs2_local_disk_chunk *dchunk; | |
466 | struct ocfs2_local_disk_dqblk *dqblk; | |
467 | struct dquot *dquot; | |
468 | handle_t *handle; | |
469 | struct buffer_head *hbh = NULL, *qbh = NULL; | |
470 | int status = 0; | |
471 | int bit, chunk; | |
472 | struct ocfs2_recovery_chunk *rchunk, *next; | |
473 | qsize_t spacechange, inodechange; | |
474 | ||
38877a43 | 475 | trace_ocfs2_recover_local_quota_file((unsigned long)lqinode->i_ino, type); |
2205363d | 476 | |
2205363d JK |
477 | list_for_each_entry_safe(rchunk, next, &(rec->r_list[type]), rc_list) { |
478 | chunk = rchunk->rc_chunk; | |
85eb8b73 JB |
479 | hbh = NULL; |
480 | status = ocfs2_read_quota_block(lqinode, | |
481 | ol_quota_chunk_block(sb, chunk), | |
482 | &hbh); | |
483 | if (status) { | |
2205363d JK |
484 | mlog_errno(status); |
485 | break; | |
486 | } | |
487 | dchunk = (struct ocfs2_local_disk_chunk *)hbh->b_data; | |
984b3f57 | 488 | for_each_set_bit(bit, rchunk->rc_bitmap, ol_chunk_entries(sb)) { |
85eb8b73 JB |
489 | qbh = NULL; |
490 | status = ocfs2_read_quota_block(lqinode, | |
2205363d | 491 | ol_dqblk_block(sb, chunk, bit), |
85eb8b73 JB |
492 | &qbh); |
493 | if (status) { | |
2205363d JK |
494 | mlog_errno(status); |
495 | break; | |
496 | } | |
497 | dqblk = (struct ocfs2_local_disk_dqblk *)(qbh->b_data + | |
498 | ol_dqblk_block_off(sb, chunk, bit)); | |
aca645a6 EB |
499 | dquot = dqget(sb, |
500 | make_kqid(&init_user_ns, type, | |
501 | le64_to_cpu(dqblk->dqb_id))); | |
2205363d JK |
502 | if (!dquot) { |
503 | status = -EIO; | |
504 | mlog(ML_ERROR, "Failed to get quota structure " | |
505 | "for id %u, type %d. Cannot finish quota " | |
506 | "file recovery.\n", | |
507 | (unsigned)le64_to_cpu(dqblk->dqb_id), | |
508 | type); | |
509 | goto out_put_bh; | |
510 | } | |
80d73f15 JK |
511 | status = ocfs2_lock_global_qf(oinfo, 1); |
512 | if (status < 0) { | |
513 | mlog_errno(status); | |
514 | goto out_put_dquot; | |
515 | } | |
516 | ||
2205363d JK |
517 | handle = ocfs2_start_trans(OCFS2_SB(sb), |
518 | OCFS2_QSYNC_CREDITS); | |
519 | if (IS_ERR(handle)) { | |
520 | status = PTR_ERR(handle); | |
521 | mlog_errno(status); | |
80d73f15 | 522 | goto out_drop_lock; |
2205363d JK |
523 | } |
524 | mutex_lock(&sb_dqopt(sb)->dqio_mutex); | |
525 | spin_lock(&dq_data_lock); | |
526 | /* Add usage from quota entry into quota changes | |
527 | * of our node. Auxiliary variables are important | |
528 | * due to signedness */ | |
529 | spacechange = le64_to_cpu(dqblk->dqb_spacemod); | |
530 | inodechange = le64_to_cpu(dqblk->dqb_inodemod); | |
531 | dquot->dq_dqb.dqb_curspace += spacechange; | |
532 | dquot->dq_dqb.dqb_curinodes += inodechange; | |
533 | spin_unlock(&dq_data_lock); | |
534 | /* We want to drop reference held by the crashed | |
535 | * node. Since we have our own reference we know | |
536 | * global structure actually won't be freed. */ | |
537 | status = ocfs2_global_release_dquot(dquot); | |
538 | if (status < 0) { | |
539 | mlog_errno(status); | |
540 | goto out_commit; | |
541 | } | |
542 | /* Release local quota file entry */ | |
0cf2f763 JB |
543 | status = ocfs2_journal_access_dq(handle, |
544 | INODE_CACHE(lqinode), | |
2205363d JK |
545 | qbh, OCFS2_JOURNAL_ACCESS_WRITE); |
546 | if (status < 0) { | |
547 | mlog_errno(status); | |
548 | goto out_commit; | |
549 | } | |
550 | lock_buffer(qbh); | |
93925579 AM |
551 | WARN_ON(!ocfs2_test_bit_unaligned(bit, dchunk->dqc_bitmap)); |
552 | ocfs2_clear_bit_unaligned(bit, dchunk->dqc_bitmap); | |
2205363d JK |
553 | le32_add_cpu(&dchunk->dqc_free, 1); |
554 | unlock_buffer(qbh); | |
ec20cec7 | 555 | ocfs2_journal_dirty(handle, qbh); |
2205363d JK |
556 | out_commit: |
557 | mutex_unlock(&sb_dqopt(sb)->dqio_mutex); | |
558 | ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
80d73f15 JK |
559 | out_drop_lock: |
560 | ocfs2_unlock_global_qf(oinfo, 1); | |
2205363d JK |
561 | out_put_dquot: |
562 | dqput(dquot); | |
563 | out_put_bh: | |
564 | brelse(qbh); | |
565 | if (status < 0) | |
566 | break; | |
567 | } | |
568 | brelse(hbh); | |
569 | list_del(&rchunk->rc_list); | |
570 | kfree(rchunk->rc_bitmap); | |
571 | kfree(rchunk); | |
572 | if (status < 0) | |
573 | break; | |
574 | } | |
2205363d JK |
575 | if (status < 0) |
576 | free_recovery_list(&(rec->r_list[type])); | |
c1e8d35e TM |
577 | if (status) |
578 | mlog_errno(status); | |
2205363d JK |
579 | return status; |
580 | } | |
581 | ||
582 | /* Recover local quota files for given node different from us */ | |
583 | int ocfs2_finish_quota_recovery(struct ocfs2_super *osb, | |
584 | struct ocfs2_quota_recovery *rec, | |
585 | int slot_num) | |
586 | { | |
52362810 JK |
587 | unsigned int ino[OCFS2_MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE, |
588 | LOCAL_GROUP_QUOTA_SYSTEM_INODE }; | |
2205363d JK |
589 | struct super_block *sb = osb->sb; |
590 | struct ocfs2_local_disk_dqinfo *ldinfo; | |
591 | struct buffer_head *bh; | |
592 | handle_t *handle; | |
593 | int type; | |
594 | int status = 0; | |
595 | struct inode *lqinode; | |
596 | unsigned int flags; | |
597 | ||
619c200d SM |
598 | printk(KERN_NOTICE "ocfs2: Finishing quota recovery on device (%s) for " |
599 | "slot %u\n", osb->dev_str, slot_num); | |
600 | ||
2205363d | 601 | mutex_lock(&sb_dqopt(sb)->dqonoff_mutex); |
52362810 | 602 | for (type = 0; type < OCFS2_MAXQUOTAS; type++) { |
2205363d JK |
603 | if (list_empty(&(rec->r_list[type]))) |
604 | continue; | |
38877a43 | 605 | trace_ocfs2_finish_quota_recovery(slot_num); |
2205363d JK |
606 | lqinode = ocfs2_get_system_file_inode(osb, ino[type], slot_num); |
607 | if (!lqinode) { | |
608 | status = -ENOENT; | |
609 | goto out; | |
610 | } | |
611 | status = ocfs2_inode_lock_full(lqinode, NULL, 1, | |
612 | OCFS2_META_LOCK_NOQUEUE); | |
613 | /* Someone else is holding the lock? Then he must be | |
614 | * doing the recovery. Just skip the file... */ | |
615 | if (status == -EAGAIN) { | |
619c200d SM |
616 | printk(KERN_NOTICE "ocfs2: Skipping quota recovery on " |
617 | "device (%s) for slot %d because quota file is " | |
618 | "locked.\n", osb->dev_str, slot_num); | |
2205363d JK |
619 | status = 0; |
620 | goto out_put; | |
621 | } else if (status < 0) { | |
622 | mlog_errno(status); | |
623 | goto out_put; | |
624 | } | |
625 | /* Now read local header */ | |
85eb8b73 JB |
626 | bh = NULL; |
627 | status = ocfs2_read_quota_block(lqinode, 0, &bh); | |
628 | if (status) { | |
2205363d JK |
629 | mlog_errno(status); |
630 | mlog(ML_ERROR, "failed to read quota file info header " | |
631 | "(slot=%d type=%d)\n", slot_num, type); | |
632 | goto out_lock; | |
633 | } | |
634 | ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + | |
635 | OCFS2_LOCAL_INFO_OFF); | |
636 | /* Is recovery still needed? */ | |
637 | flags = le32_to_cpu(ldinfo->dqi_flags); | |
638 | if (!(flags & OLQF_CLEAN)) | |
639 | status = ocfs2_recover_local_quota_file(lqinode, | |
640 | type, | |
641 | rec); | |
642 | /* We don't want to mark file as clean when it is actually | |
643 | * active */ | |
644 | if (slot_num == osb->slot_num) | |
645 | goto out_bh; | |
646 | /* Mark quota file as clean if we are recovering quota file of | |
647 | * some other node. */ | |
0584974a JK |
648 | handle = ocfs2_start_trans(osb, |
649 | OCFS2_LOCAL_QINFO_WRITE_CREDITS); | |
2205363d JK |
650 | if (IS_ERR(handle)) { |
651 | status = PTR_ERR(handle); | |
652 | mlog_errno(status); | |
653 | goto out_bh; | |
654 | } | |
0cf2f763 JB |
655 | status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), |
656 | bh, | |
13723d00 | 657 | OCFS2_JOURNAL_ACCESS_WRITE); |
2205363d JK |
658 | if (status < 0) { |
659 | mlog_errno(status); | |
660 | goto out_trans; | |
661 | } | |
662 | lock_buffer(bh); | |
663 | ldinfo->dqi_flags = cpu_to_le32(flags | OLQF_CLEAN); | |
664 | unlock_buffer(bh); | |
ec20cec7 | 665 | ocfs2_journal_dirty(handle, bh); |
2205363d JK |
666 | out_trans: |
667 | ocfs2_commit_trans(osb, handle); | |
668 | out_bh: | |
669 | brelse(bh); | |
670 | out_lock: | |
671 | ocfs2_inode_unlock(lqinode, 1); | |
672 | out_put: | |
673 | iput(lqinode); | |
674 | if (status < 0) | |
675 | break; | |
676 | } | |
677 | out: | |
678 | mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex); | |
679 | kfree(rec); | |
680 | return status; | |
681 | } | |
682 | ||
9e33d69f JK |
683 | /* Read information header from quota file */ |
684 | static int ocfs2_local_read_info(struct super_block *sb, int type) | |
685 | { | |
686 | struct ocfs2_local_disk_dqinfo *ldinfo; | |
687 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
688 | struct ocfs2_mem_dqinfo *oinfo; | |
689 | struct inode *lqinode = sb_dqopt(sb)->files[type]; | |
690 | int status; | |
691 | struct buffer_head *bh = NULL; | |
2205363d | 692 | struct ocfs2_quota_recovery *rec; |
9e33d69f JK |
693 | int locked = 0; |
694 | ||
b4c30de3 JK |
695 | /* We don't need the lock and we have to acquire quota file locks |
696 | * which will later depend on this lock */ | |
697 | mutex_unlock(&sb_dqopt(sb)->dqio_mutex); | |
b10a0819 JK |
698 | info->dqi_max_spc_limit = 0x7fffffffffffffffLL; |
699 | info->dqi_max_ino_limit = 0x7fffffffffffffffLL; | |
9e33d69f JK |
700 | oinfo = kmalloc(sizeof(struct ocfs2_mem_dqinfo), GFP_NOFS); |
701 | if (!oinfo) { | |
702 | mlog(ML_ERROR, "failed to allocate memory for ocfs2 quota" | |
703 | " info."); | |
704 | goto out_err; | |
705 | } | |
706 | info->dqi_priv = oinfo; | |
707 | oinfo->dqi_type = type; | |
708 | INIT_LIST_HEAD(&oinfo->dqi_chunk); | |
2205363d | 709 | oinfo->dqi_rec = NULL; |
9e33d69f | 710 | oinfo->dqi_lqi_bh = NULL; |
ae4f6ef1 | 711 | oinfo->dqi_libh = NULL; |
9e33d69f JK |
712 | |
713 | status = ocfs2_global_read_info(sb, type); | |
714 | if (status < 0) | |
715 | goto out_err; | |
716 | ||
717 | status = ocfs2_inode_lock(lqinode, &oinfo->dqi_lqi_bh, 1); | |
718 | if (status < 0) { | |
719 | mlog_errno(status); | |
720 | goto out_err; | |
721 | } | |
722 | locked = 1; | |
723 | ||
724 | /* Now read local header */ | |
85eb8b73 JB |
725 | status = ocfs2_read_quota_block(lqinode, 0, &bh); |
726 | if (status) { | |
9e33d69f JK |
727 | mlog_errno(status); |
728 | mlog(ML_ERROR, "failed to read quota file info header " | |
729 | "(type=%d)\n", type); | |
730 | goto out_err; | |
731 | } | |
732 | ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + | |
733 | OCFS2_LOCAL_INFO_OFF); | |
96827adc | 734 | oinfo->dqi_flags = le32_to_cpu(ldinfo->dqi_flags); |
9e33d69f JK |
735 | oinfo->dqi_chunks = le32_to_cpu(ldinfo->dqi_chunks); |
736 | oinfo->dqi_blocks = le32_to_cpu(ldinfo->dqi_blocks); | |
ae4f6ef1 | 737 | oinfo->dqi_libh = bh; |
9e33d69f JK |
738 | |
739 | /* We crashed when using local quota file? */ | |
96827adc | 740 | if (!(oinfo->dqi_flags & OLQF_CLEAN)) { |
2205363d JK |
741 | rec = OCFS2_SB(sb)->quota_rec; |
742 | if (!rec) { | |
743 | rec = ocfs2_alloc_quota_recovery(); | |
744 | if (!rec) { | |
745 | status = -ENOMEM; | |
746 | mlog_errno(status); | |
747 | goto out_err; | |
748 | } | |
749 | OCFS2_SB(sb)->quota_rec = rec; | |
750 | } | |
9e33d69f | 751 | |
2205363d JK |
752 | status = ocfs2_recovery_load_quota(lqinode, ldinfo, type, |
753 | &rec->r_list[type]); | |
754 | if (status < 0) { | |
755 | mlog_errno(status); | |
756 | goto out_err; | |
757 | } | |
758 | } | |
759 | ||
760 | status = ocfs2_load_local_quota_bitmaps(lqinode, | |
9e33d69f JK |
761 | ldinfo, |
762 | &oinfo->dqi_chunk); | |
763 | if (status < 0) { | |
764 | mlog_errno(status); | |
765 | goto out_err; | |
766 | } | |
767 | ||
768 | /* Now mark quota file as used */ | |
96827adc | 769 | oinfo->dqi_flags &= ~OLQF_CLEAN; |
9e33d69f JK |
770 | status = ocfs2_modify_bh(lqinode, bh, olq_update_info, info); |
771 | if (status < 0) { | |
772 | mlog_errno(status); | |
773 | goto out_err; | |
774 | } | |
775 | ||
b4c30de3 | 776 | mutex_lock(&sb_dqopt(sb)->dqio_mutex); |
9e33d69f JK |
777 | return 0; |
778 | out_err: | |
779 | if (oinfo) { | |
780 | iput(oinfo->dqi_gqinode); | |
781 | ocfs2_simple_drop_lockres(OCFS2_SB(sb), &oinfo->dqi_gqlock); | |
782 | ocfs2_lock_res_free(&oinfo->dqi_gqlock); | |
783 | brelse(oinfo->dqi_lqi_bh); | |
784 | if (locked) | |
785 | ocfs2_inode_unlock(lqinode, 1); | |
786 | ocfs2_release_local_quota_bitmaps(&oinfo->dqi_chunk); | |
787 | kfree(oinfo); | |
788 | } | |
789 | brelse(bh); | |
b4c30de3 | 790 | mutex_lock(&sb_dqopt(sb)->dqio_mutex); |
9e33d69f JK |
791 | return -1; |
792 | } | |
793 | ||
794 | /* Write local info to quota file */ | |
795 | static int ocfs2_local_write_info(struct super_block *sb, int type) | |
796 | { | |
797 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
798 | struct buffer_head *bh = ((struct ocfs2_mem_dqinfo *)info->dqi_priv) | |
ae4f6ef1 | 799 | ->dqi_libh; |
9e33d69f JK |
800 | int status; |
801 | ||
802 | status = ocfs2_modify_bh(sb_dqopt(sb)->files[type], bh, olq_update_info, | |
803 | info); | |
804 | if (status < 0) { | |
805 | mlog_errno(status); | |
806 | return -1; | |
807 | } | |
808 | ||
809 | return 0; | |
810 | } | |
811 | ||
812 | /* Release info from memory */ | |
813 | static int ocfs2_local_free_info(struct super_block *sb, int type) | |
814 | { | |
815 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
816 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
817 | struct ocfs2_quota_chunk *chunk; | |
818 | struct ocfs2_local_disk_chunk *dchunk; | |
819 | int mark_clean = 1, len; | |
820 | int status; | |
821 | ||
822 | iput(oinfo->dqi_gqinode); | |
823 | ocfs2_simple_drop_lockres(OCFS2_SB(sb), &oinfo->dqi_gqlock); | |
824 | ocfs2_lock_res_free(&oinfo->dqi_gqlock); | |
825 | list_for_each_entry(chunk, &oinfo->dqi_chunk, qc_chunk) { | |
826 | dchunk = (struct ocfs2_local_disk_chunk *) | |
827 | (chunk->qc_headerbh->b_data); | |
828 | if (chunk->qc_num < oinfo->dqi_chunks - 1) { | |
829 | len = ol_chunk_entries(sb); | |
830 | } else { | |
831 | len = (oinfo->dqi_blocks - | |
832 | ol_quota_chunk_block(sb, chunk->qc_num) - 1) | |
833 | * ol_quota_entries_per_block(sb); | |
834 | } | |
835 | /* Not all entries free? Bug! */ | |
836 | if (le32_to_cpu(dchunk->dqc_free) != len) { | |
837 | mlog(ML_ERROR, "releasing quota file with used " | |
838 | "entries (type=%d)\n", type); | |
839 | mark_clean = 0; | |
840 | } | |
841 | } | |
842 | ocfs2_release_local_quota_bitmaps(&oinfo->dqi_chunk); | |
843 | ||
2205363d JK |
844 | /* dqonoff_mutex protects us against racing with recovery thread... */ |
845 | if (oinfo->dqi_rec) { | |
846 | ocfs2_free_quota_recovery(oinfo->dqi_rec); | |
847 | mark_clean = 0; | |
848 | } | |
849 | ||
9e33d69f JK |
850 | if (!mark_clean) |
851 | goto out; | |
852 | ||
853 | /* Mark local file as clean */ | |
96827adc | 854 | oinfo->dqi_flags |= OLQF_CLEAN; |
9e33d69f | 855 | status = ocfs2_modify_bh(sb_dqopt(sb)->files[type], |
ae4f6ef1 | 856 | oinfo->dqi_libh, |
9e33d69f JK |
857 | olq_update_info, |
858 | info); | |
859 | if (status < 0) { | |
860 | mlog_errno(status); | |
861 | goto out; | |
862 | } | |
863 | ||
864 | out: | |
865 | ocfs2_inode_unlock(sb_dqopt(sb)->files[type], 1); | |
ae4f6ef1 | 866 | brelse(oinfo->dqi_libh); |
9e33d69f JK |
867 | brelse(oinfo->dqi_lqi_bh); |
868 | kfree(oinfo); | |
869 | return 0; | |
870 | } | |
871 | ||
872 | static void olq_set_dquot(struct buffer_head *bh, void *private) | |
873 | { | |
874 | struct ocfs2_dquot *od = private; | |
875 | struct ocfs2_local_disk_dqblk *dqblk; | |
876 | struct super_block *sb = od->dq_dquot.dq_sb; | |
877 | ||
878 | dqblk = (struct ocfs2_local_disk_dqblk *)(bh->b_data | |
879 | + ol_dqblk_block_offset(sb, od->dq_local_off)); | |
880 | ||
4c376dca EB |
881 | dqblk->dqb_id = cpu_to_le64(from_kqid(&init_user_ns, |
882 | od->dq_dquot.dq_id)); | |
9e33d69f JK |
883 | spin_lock(&dq_data_lock); |
884 | dqblk->dqb_spacemod = cpu_to_le64(od->dq_dquot.dq_dqb.dqb_curspace - | |
885 | od->dq_origspace); | |
886 | dqblk->dqb_inodemod = cpu_to_le64(od->dq_dquot.dq_dqb.dqb_curinodes - | |
887 | od->dq_originodes); | |
888 | spin_unlock(&dq_data_lock); | |
38877a43 TM |
889 | trace_olq_set_dquot( |
890 | (unsigned long long)le64_to_cpu(dqblk->dqb_spacemod), | |
891 | (unsigned long long)le64_to_cpu(dqblk->dqb_inodemod), | |
4c376dca | 892 | from_kqid(&init_user_ns, od->dq_dquot.dq_id)); |
9e33d69f JK |
893 | } |
894 | ||
895 | /* Write dquot to local quota file */ | |
741e1289 | 896 | int ocfs2_local_write_dquot(struct dquot *dquot) |
9e33d69f JK |
897 | { |
898 | struct super_block *sb = dquot->dq_sb; | |
899 | struct ocfs2_dquot *od = OCFS2_DQUOT(dquot); | |
f64dd44e | 900 | struct buffer_head *bh; |
4c376dca | 901 | struct inode *lqinode = sb_dqopt(sb)->files[dquot->dq_id.type]; |
9e33d69f JK |
902 | int status; |
903 | ||
f64dd44e JK |
904 | status = ocfs2_read_quota_phys_block(lqinode, od->dq_local_phys_blk, |
905 | &bh); | |
85eb8b73 | 906 | if (status) { |
9e33d69f JK |
907 | mlog_errno(status); |
908 | goto out; | |
909 | } | |
f64dd44e | 910 | status = ocfs2_modify_bh(lqinode, bh, olq_set_dquot, od); |
9e33d69f JK |
911 | if (status < 0) { |
912 | mlog_errno(status); | |
913 | goto out; | |
914 | } | |
915 | out: | |
916 | brelse(bh); | |
917 | return status; | |
918 | } | |
919 | ||
920 | /* Find free entry in local quota file */ | |
921 | static struct ocfs2_quota_chunk *ocfs2_find_free_entry(struct super_block *sb, | |
922 | int type, | |
923 | int *offset) | |
924 | { | |
925 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
926 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
927 | struct ocfs2_quota_chunk *chunk; | |
928 | struct ocfs2_local_disk_chunk *dchunk; | |
929 | int found = 0, len; | |
930 | ||
931 | list_for_each_entry(chunk, &oinfo->dqi_chunk, qc_chunk) { | |
932 | dchunk = (struct ocfs2_local_disk_chunk *) | |
933 | chunk->qc_headerbh->b_data; | |
934 | if (le32_to_cpu(dchunk->dqc_free) > 0) { | |
935 | found = 1; | |
936 | break; | |
937 | } | |
938 | } | |
939 | if (!found) | |
940 | return NULL; | |
941 | ||
942 | if (chunk->qc_num < oinfo->dqi_chunks - 1) { | |
943 | len = ol_chunk_entries(sb); | |
944 | } else { | |
945 | len = (oinfo->dqi_blocks - | |
946 | ol_quota_chunk_block(sb, chunk->qc_num) - 1) | |
947 | * ol_quota_entries_per_block(sb); | |
948 | } | |
949 | ||
93925579 | 950 | found = ocfs2_find_next_zero_bit_unaligned(dchunk->dqc_bitmap, len, 0); |
9e33d69f JK |
951 | /* We failed? */ |
952 | if (found == len) { | |
953 | mlog(ML_ERROR, "Did not find empty entry in chunk %d with %u" | |
954 | " entries free (type=%d)\n", chunk->qc_num, | |
955 | le32_to_cpu(dchunk->dqc_free), type); | |
956 | return ERR_PTR(-EIO); | |
957 | } | |
958 | *offset = found; | |
959 | return chunk; | |
960 | } | |
961 | ||
962 | /* Add new chunk to the local quota file */ | |
963 | static struct ocfs2_quota_chunk *ocfs2_local_quota_add_chunk( | |
964 | struct super_block *sb, | |
965 | int type, | |
966 | int *offset) | |
967 | { | |
968 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
969 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
970 | struct inode *lqinode = sb_dqopt(sb)->files[type]; | |
971 | struct ocfs2_quota_chunk *chunk = NULL; | |
972 | struct ocfs2_local_disk_chunk *dchunk; | |
973 | int status; | |
974 | handle_t *handle; | |
0e7f387b | 975 | struct buffer_head *bh = NULL, *dbh = NULL; |
9e33d69f JK |
976 | u64 p_blkno; |
977 | ||
978 | /* We are protected by dqio_sem so no locking needed */ | |
5693486b | 979 | status = ocfs2_extend_no_holes(lqinode, NULL, |
f17c20dd JB |
980 | i_size_read(lqinode) + 2 * sb->s_blocksize, |
981 | i_size_read(lqinode)); | |
9e33d69f JK |
982 | if (status < 0) { |
983 | mlog_errno(status); | |
984 | goto out; | |
985 | } | |
986 | status = ocfs2_simple_size_update(lqinode, oinfo->dqi_lqi_bh, | |
f17c20dd | 987 | i_size_read(lqinode) + 2 * sb->s_blocksize); |
9e33d69f JK |
988 | if (status < 0) { |
989 | mlog_errno(status); | |
990 | goto out; | |
991 | } | |
992 | ||
993 | chunk = kmem_cache_alloc(ocfs2_qf_chunk_cachep, GFP_NOFS); | |
994 | if (!chunk) { | |
995 | status = -ENOMEM; | |
996 | mlog_errno(status); | |
997 | goto out; | |
998 | } | |
0584974a JK |
999 | /* Local quota info and two new blocks we initialize */ |
1000 | handle = ocfs2_start_trans(OCFS2_SB(sb), | |
1001 | OCFS2_LOCAL_QINFO_WRITE_CREDITS + | |
1002 | 2 * OCFS2_QUOTA_BLOCK_UPDATE_CREDITS); | |
0e7f387b JK |
1003 | if (IS_ERR(handle)) { |
1004 | status = PTR_ERR(handle); | |
1005 | mlog_errno(status); | |
1006 | goto out; | |
1007 | } | |
9e33d69f | 1008 | |
0e7f387b | 1009 | /* Initialize chunk header */ |
9e33d69f JK |
1010 | status = ocfs2_extent_map_get_blocks(lqinode, oinfo->dqi_blocks, |
1011 | &p_blkno, NULL, NULL); | |
9e33d69f JK |
1012 | if (status < 0) { |
1013 | mlog_errno(status); | |
0e7f387b | 1014 | goto out_trans; |
9e33d69f JK |
1015 | } |
1016 | bh = sb_getblk(sb, p_blkno); | |
1017 | if (!bh) { | |
1018 | status = -ENOMEM; | |
1019 | mlog_errno(status); | |
0e7f387b | 1020 | goto out_trans; |
9e33d69f JK |
1021 | } |
1022 | dchunk = (struct ocfs2_local_disk_chunk *)bh->b_data; | |
8cb471e8 | 1023 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(lqinode), bh); |
0cf2f763 | 1024 | status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), bh, |
0e7f387b | 1025 | OCFS2_JOURNAL_ACCESS_CREATE); |
9e33d69f JK |
1026 | if (status < 0) { |
1027 | mlog_errno(status); | |
1028 | goto out_trans; | |
1029 | } | |
1030 | lock_buffer(bh); | |
df32b334 | 1031 | dchunk->dqc_free = cpu_to_le32(ol_quota_entries_per_block(sb)); |
9e33d69f JK |
1032 | memset(dchunk->dqc_bitmap, 0, |
1033 | sb->s_blocksize - sizeof(struct ocfs2_local_disk_chunk) - | |
1034 | OCFS2_QBLK_RESERVED_SPACE); | |
9e33d69f | 1035 | unlock_buffer(bh); |
ec20cec7 | 1036 | ocfs2_journal_dirty(handle, bh); |
9e33d69f | 1037 | |
0e7f387b | 1038 | /* Initialize new block with structures */ |
0e7f387b JK |
1039 | status = ocfs2_extent_map_get_blocks(lqinode, oinfo->dqi_blocks + 1, |
1040 | &p_blkno, NULL, NULL); | |
0e7f387b JK |
1041 | if (status < 0) { |
1042 | mlog_errno(status); | |
1043 | goto out_trans; | |
1044 | } | |
1045 | dbh = sb_getblk(sb, p_blkno); | |
1046 | if (!dbh) { | |
1047 | status = -ENOMEM; | |
1048 | mlog_errno(status); | |
1049 | goto out_trans; | |
1050 | } | |
8cb471e8 | 1051 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(lqinode), dbh); |
0cf2f763 | 1052 | status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), dbh, |
0e7f387b JK |
1053 | OCFS2_JOURNAL_ACCESS_CREATE); |
1054 | if (status < 0) { | |
1055 | mlog_errno(status); | |
1056 | goto out_trans; | |
1057 | } | |
1058 | lock_buffer(dbh); | |
1059 | memset(dbh->b_data, 0, sb->s_blocksize - OCFS2_QBLK_RESERVED_SPACE); | |
1060 | unlock_buffer(dbh); | |
ec20cec7 | 1061 | ocfs2_journal_dirty(handle, dbh); |
0e7f387b JK |
1062 | |
1063 | /* Update local quotafile info */ | |
9e33d69f JK |
1064 | oinfo->dqi_blocks += 2; |
1065 | oinfo->dqi_chunks++; | |
1066 | status = ocfs2_local_write_info(sb, type); | |
1067 | if (status < 0) { | |
1068 | mlog_errno(status); | |
1069 | goto out_trans; | |
1070 | } | |
1071 | status = ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1072 | if (status < 0) { | |
1073 | mlog_errno(status); | |
1074 | goto out; | |
1075 | } | |
1076 | ||
1077 | list_add_tail(&chunk->qc_chunk, &oinfo->dqi_chunk); | |
1078 | chunk->qc_num = list_entry(chunk->qc_chunk.prev, | |
1079 | struct ocfs2_quota_chunk, | |
1080 | qc_chunk)->qc_num + 1; | |
1081 | chunk->qc_headerbh = bh; | |
1082 | *offset = 0; | |
1083 | return chunk; | |
1084 | out_trans: | |
1085 | ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1086 | out: | |
1087 | brelse(bh); | |
0e7f387b | 1088 | brelse(dbh); |
9e33d69f JK |
1089 | kmem_cache_free(ocfs2_qf_chunk_cachep, chunk); |
1090 | return ERR_PTR(status); | |
1091 | } | |
1092 | ||
1093 | /* Find free entry in local quota file */ | |
1094 | static struct ocfs2_quota_chunk *ocfs2_extend_local_quota_file( | |
1095 | struct super_block *sb, | |
1096 | int type, | |
1097 | int *offset) | |
1098 | { | |
1099 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
1100 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
1101 | struct ocfs2_quota_chunk *chunk; | |
1102 | struct inode *lqinode = sb_dqopt(sb)->files[type]; | |
1103 | struct ocfs2_local_disk_chunk *dchunk; | |
1104 | int epb = ol_quota_entries_per_block(sb); | |
1105 | unsigned int chunk_blocks; | |
0e7f387b JK |
1106 | struct buffer_head *bh; |
1107 | u64 p_blkno; | |
9e33d69f JK |
1108 | int status; |
1109 | handle_t *handle; | |
1110 | ||
1111 | if (list_empty(&oinfo->dqi_chunk)) | |
1112 | return ocfs2_local_quota_add_chunk(sb, type, offset); | |
1113 | /* Is the last chunk full? */ | |
1114 | chunk = list_entry(oinfo->dqi_chunk.prev, | |
1115 | struct ocfs2_quota_chunk, qc_chunk); | |
1116 | chunk_blocks = oinfo->dqi_blocks - | |
1117 | ol_quota_chunk_block(sb, chunk->qc_num) - 1; | |
1118 | if (ol_chunk_blocks(sb) == chunk_blocks) | |
1119 | return ocfs2_local_quota_add_chunk(sb, type, offset); | |
1120 | ||
1121 | /* We are protected by dqio_sem so no locking needed */ | |
5693486b | 1122 | status = ocfs2_extend_no_holes(lqinode, NULL, |
f17c20dd JB |
1123 | i_size_read(lqinode) + sb->s_blocksize, |
1124 | i_size_read(lqinode)); | |
9e33d69f JK |
1125 | if (status < 0) { |
1126 | mlog_errno(status); | |
1127 | goto out; | |
1128 | } | |
1129 | status = ocfs2_simple_size_update(lqinode, oinfo->dqi_lqi_bh, | |
f17c20dd | 1130 | i_size_read(lqinode) + sb->s_blocksize); |
9e33d69f JK |
1131 | if (status < 0) { |
1132 | mlog_errno(status); | |
1133 | goto out; | |
1134 | } | |
0e7f387b JK |
1135 | |
1136 | /* Get buffer from the just added block */ | |
0e7f387b JK |
1137 | status = ocfs2_extent_map_get_blocks(lqinode, oinfo->dqi_blocks, |
1138 | &p_blkno, NULL, NULL); | |
0e7f387b JK |
1139 | if (status < 0) { |
1140 | mlog_errno(status); | |
1141 | goto out; | |
1142 | } | |
1143 | bh = sb_getblk(sb, p_blkno); | |
1144 | if (!bh) { | |
1145 | status = -ENOMEM; | |
1146 | mlog_errno(status); | |
1147 | goto out; | |
1148 | } | |
8cb471e8 | 1149 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(lqinode), bh); |
0e7f387b | 1150 | |
0584974a JK |
1151 | /* Local quota info, chunk header and the new block we initialize */ |
1152 | handle = ocfs2_start_trans(OCFS2_SB(sb), | |
1153 | OCFS2_LOCAL_QINFO_WRITE_CREDITS + | |
1154 | 2 * OCFS2_QUOTA_BLOCK_UPDATE_CREDITS); | |
9e33d69f JK |
1155 | if (IS_ERR(handle)) { |
1156 | status = PTR_ERR(handle); | |
1157 | mlog_errno(status); | |
1158 | goto out; | |
1159 | } | |
0e7f387b | 1160 | /* Zero created block */ |
0cf2f763 | 1161 | status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), bh, |
0e7f387b JK |
1162 | OCFS2_JOURNAL_ACCESS_CREATE); |
1163 | if (status < 0) { | |
1164 | mlog_errno(status); | |
1165 | goto out_trans; | |
1166 | } | |
1167 | lock_buffer(bh); | |
1168 | memset(bh->b_data, 0, sb->s_blocksize); | |
1169 | unlock_buffer(bh); | |
ec20cec7 JB |
1170 | ocfs2_journal_dirty(handle, bh); |
1171 | ||
0e7f387b | 1172 | /* Update chunk header */ |
0cf2f763 JB |
1173 | status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), |
1174 | chunk->qc_headerbh, | |
9e33d69f JK |
1175 | OCFS2_JOURNAL_ACCESS_WRITE); |
1176 | if (status < 0) { | |
1177 | mlog_errno(status); | |
1178 | goto out_trans; | |
1179 | } | |
1180 | ||
1181 | dchunk = (struct ocfs2_local_disk_chunk *)chunk->qc_headerbh->b_data; | |
1182 | lock_buffer(chunk->qc_headerbh); | |
1183 | le32_add_cpu(&dchunk->dqc_free, ol_quota_entries_per_block(sb)); | |
1184 | unlock_buffer(chunk->qc_headerbh); | |
ec20cec7 JB |
1185 | ocfs2_journal_dirty(handle, chunk->qc_headerbh); |
1186 | ||
0e7f387b | 1187 | /* Update file header */ |
9e33d69f JK |
1188 | oinfo->dqi_blocks++; |
1189 | status = ocfs2_local_write_info(sb, type); | |
1190 | if (status < 0) { | |
1191 | mlog_errno(status); | |
1192 | goto out_trans; | |
1193 | } | |
1194 | ||
1195 | status = ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1196 | if (status < 0) { | |
1197 | mlog_errno(status); | |
1198 | goto out; | |
1199 | } | |
1200 | *offset = chunk_blocks * epb; | |
1201 | return chunk; | |
1202 | out_trans: | |
1203 | ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1204 | out: | |
1205 | return ERR_PTR(status); | |
1206 | } | |
1207 | ||
df32b334 | 1208 | static void olq_alloc_dquot(struct buffer_head *bh, void *private) |
9e33d69f JK |
1209 | { |
1210 | int *offset = private; | |
1211 | struct ocfs2_local_disk_chunk *dchunk; | |
1212 | ||
1213 | dchunk = (struct ocfs2_local_disk_chunk *)bh->b_data; | |
93925579 | 1214 | ocfs2_set_bit_unaligned(*offset, dchunk->dqc_bitmap); |
9e33d69f JK |
1215 | le32_add_cpu(&dchunk->dqc_free, -1); |
1216 | } | |
1217 | ||
1218 | /* Create dquot in the local file for given id */ | |
fb8dd8d7 | 1219 | int ocfs2_create_local_dquot(struct dquot *dquot) |
9e33d69f JK |
1220 | { |
1221 | struct super_block *sb = dquot->dq_sb; | |
4c376dca | 1222 | int type = dquot->dq_id.type; |
9e33d69f JK |
1223 | struct inode *lqinode = sb_dqopt(sb)->files[type]; |
1224 | struct ocfs2_quota_chunk *chunk; | |
1225 | struct ocfs2_dquot *od = OCFS2_DQUOT(dquot); | |
1226 | int offset; | |
1227 | int status; | |
f64dd44e | 1228 | u64 pcount; |
9e33d69f | 1229 | |
f64dd44e | 1230 | down_write(&OCFS2_I(lqinode)->ip_alloc_sem); |
9e33d69f JK |
1231 | chunk = ocfs2_find_free_entry(sb, type, &offset); |
1232 | if (!chunk) { | |
1233 | chunk = ocfs2_extend_local_quota_file(sb, type, &offset); | |
f64dd44e JK |
1234 | if (IS_ERR(chunk)) { |
1235 | status = PTR_ERR(chunk); | |
1236 | goto out; | |
1237 | } | |
9e33d69f | 1238 | } else if (IS_ERR(chunk)) { |
f64dd44e JK |
1239 | status = PTR_ERR(chunk); |
1240 | goto out; | |
9e33d69f JK |
1241 | } |
1242 | od->dq_local_off = ol_dqblk_off(sb, chunk->qc_num, offset); | |
1243 | od->dq_chunk = chunk; | |
f64dd44e JK |
1244 | status = ocfs2_extent_map_get_blocks(lqinode, |
1245 | ol_dqblk_block(sb, chunk->qc_num, offset), | |
1246 | &od->dq_local_phys_blk, | |
1247 | &pcount, | |
1248 | NULL); | |
9e33d69f JK |
1249 | |
1250 | /* Initialize dquot structure on disk */ | |
1251 | status = ocfs2_local_write_dquot(dquot); | |
1252 | if (status < 0) { | |
1253 | mlog_errno(status); | |
1254 | goto out; | |
1255 | } | |
1256 | ||
1257 | /* Mark structure as allocated */ | |
1258 | status = ocfs2_modify_bh(lqinode, chunk->qc_headerbh, olq_alloc_dquot, | |
1259 | &offset); | |
1260 | if (status < 0) { | |
1261 | mlog_errno(status); | |
1262 | goto out; | |
1263 | } | |
1264 | out: | |
f64dd44e | 1265 | up_write(&OCFS2_I(lqinode)->ip_alloc_sem); |
9e33d69f JK |
1266 | return status; |
1267 | } | |
1268 | ||
fb8dd8d7 JK |
1269 | /* |
1270 | * Release dquot structure from local quota file. ocfs2_release_dquot() has | |
1271 | * already started a transaction and written all changes to global quota file | |
1272 | */ | |
1273 | int ocfs2_local_release_dquot(handle_t *handle, struct dquot *dquot) | |
9e33d69f JK |
1274 | { |
1275 | int status; | |
4c376dca | 1276 | int type = dquot->dq_id.type; |
9e33d69f JK |
1277 | struct ocfs2_dquot *od = OCFS2_DQUOT(dquot); |
1278 | struct super_block *sb = dquot->dq_sb; | |
1279 | struct ocfs2_local_disk_chunk *dchunk; | |
1280 | int offset; | |
9e33d69f | 1281 | |
0cf2f763 JB |
1282 | status = ocfs2_journal_access_dq(handle, |
1283 | INODE_CACHE(sb_dqopt(sb)->files[type]), | |
9e33d69f JK |
1284 | od->dq_chunk->qc_headerbh, OCFS2_JOURNAL_ACCESS_WRITE); |
1285 | if (status < 0) { | |
1286 | mlog_errno(status); | |
1287 | goto out; | |
1288 | } | |
1289 | offset = ol_dqblk_chunk_off(sb, od->dq_chunk->qc_num, | |
1290 | od->dq_local_off); | |
1291 | dchunk = (struct ocfs2_local_disk_chunk *) | |
1292 | (od->dq_chunk->qc_headerbh->b_data); | |
1293 | /* Mark structure as freed */ | |
1294 | lock_buffer(od->dq_chunk->qc_headerbh); | |
93925579 | 1295 | ocfs2_clear_bit_unaligned(offset, dchunk->dqc_bitmap); |
9e33d69f JK |
1296 | le32_add_cpu(&dchunk->dqc_free, 1); |
1297 | unlock_buffer(od->dq_chunk->qc_headerbh); | |
ec20cec7 JB |
1298 | ocfs2_journal_dirty(handle, od->dq_chunk->qc_headerbh); |
1299 | ||
9e33d69f | 1300 | out: |
9e33d69f JK |
1301 | return status; |
1302 | } | |
1303 | ||
1472da5f | 1304 | static const struct quota_format_ops ocfs2_format_ops = { |
9e33d69f JK |
1305 | .check_quota_file = ocfs2_local_check_quota_file, |
1306 | .read_file_info = ocfs2_local_read_info, | |
1307 | .write_file_info = ocfs2_global_write_info, | |
1308 | .free_file_info = ocfs2_local_free_info, | |
9e33d69f JK |
1309 | }; |
1310 | ||
1311 | struct quota_format_type ocfs2_quota_format = { | |
1312 | .qf_fmt_id = QFMT_OCFS2, | |
1313 | .qf_ops = &ocfs2_format_ops, | |
1314 | .qf_owner = THIS_MODULE | |
1315 | }; |