Commit | Line | Data |
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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
9e33d69f JK |
2 | /* |
3 | * Implementation of operations over local quota file | |
4 | */ | |
5 | ||
6 | #include <linux/fs.h> | |
5a0e3ad6 | 7 | #include <linux/slab.h> |
9e33d69f JK |
8 | #include <linux/quota.h> |
9 | #include <linux/quotaops.h> | |
10 | #include <linux/module.h> | |
11 | ||
9e33d69f JK |
12 | #include <cluster/masklog.h> |
13 | ||
14 | #include "ocfs2_fs.h" | |
15 | #include "ocfs2.h" | |
16 | #include "inode.h" | |
17 | #include "alloc.h" | |
18 | #include "file.h" | |
19 | #include "buffer_head_io.h" | |
20 | #include "journal.h" | |
21 | #include "sysfile.h" | |
22 | #include "dlmglue.h" | |
23 | #include "quota.h" | |
4b3fa190 | 24 | #include "uptodate.h" |
fb8dd8d7 | 25 | #include "super.h" |
38877a43 | 26 | #include "ocfs2_trace.h" |
9e33d69f JK |
27 | |
28 | /* Number of local quota structures per block */ | |
29 | static inline unsigned int ol_quota_entries_per_block(struct super_block *sb) | |
30 | { | |
31 | return ((sb->s_blocksize - OCFS2_QBLK_RESERVED_SPACE) / | |
32 | sizeof(struct ocfs2_local_disk_dqblk)); | |
33 | } | |
34 | ||
35 | /* Number of blocks with entries in one chunk */ | |
36 | static inline unsigned int ol_chunk_blocks(struct super_block *sb) | |
37 | { | |
38 | return ((sb->s_blocksize - sizeof(struct ocfs2_local_disk_chunk) - | |
39 | OCFS2_QBLK_RESERVED_SPACE) << 3) / | |
40 | ol_quota_entries_per_block(sb); | |
41 | } | |
42 | ||
43 | /* Number of entries in a chunk bitmap */ | |
44 | static unsigned int ol_chunk_entries(struct super_block *sb) | |
45 | { | |
46 | return ol_chunk_blocks(sb) * ol_quota_entries_per_block(sb); | |
47 | } | |
48 | ||
49 | /* Offset of the chunk in quota file */ | |
50 | static unsigned int ol_quota_chunk_block(struct super_block *sb, int c) | |
51 | { | |
52 | /* 1 block for local quota file info, 1 block per chunk for chunk info */ | |
53 | return 1 + (ol_chunk_blocks(sb) + 1) * c; | |
54 | } | |
55 | ||
2205363d JK |
56 | static unsigned int ol_dqblk_block(struct super_block *sb, int c, int off) |
57 | { | |
58 | int epb = ol_quota_entries_per_block(sb); | |
59 | ||
60 | return ol_quota_chunk_block(sb, c) + 1 + off / epb; | |
61 | } | |
62 | ||
63 | static unsigned int ol_dqblk_block_off(struct super_block *sb, int c, int off) | |
9e33d69f JK |
64 | { |
65 | int epb = ol_quota_entries_per_block(sb); | |
66 | ||
2205363d JK |
67 | return (off % epb) * sizeof(struct ocfs2_local_disk_dqblk); |
68 | } | |
69 | ||
70 | /* Offset of the dquot structure in the quota file */ | |
71 | static loff_t ol_dqblk_off(struct super_block *sb, int c, int off) | |
72 | { | |
73 | return (ol_dqblk_block(sb, c, off) << sb->s_blocksize_bits) + | |
74 | ol_dqblk_block_off(sb, c, off); | |
9e33d69f JK |
75 | } |
76 | ||
9e33d69f JK |
77 | static inline unsigned int ol_dqblk_block_offset(struct super_block *sb, loff_t off) |
78 | { | |
79 | return off & ((1 << sb->s_blocksize_bits) - 1); | |
80 | } | |
81 | ||
82 | /* Compute offset in the chunk of a structure with the given offset */ | |
83 | static int ol_dqblk_chunk_off(struct super_block *sb, int c, loff_t off) | |
84 | { | |
85 | int epb = ol_quota_entries_per_block(sb); | |
86 | ||
87 | return ((off >> sb->s_blocksize_bits) - | |
88 | ol_quota_chunk_block(sb, c) - 1) * epb | |
89 | + ((unsigned int)(off & ((1 << sb->s_blocksize_bits) - 1))) / | |
90 | sizeof(struct ocfs2_local_disk_dqblk); | |
91 | } | |
92 | ||
93 | /* Write bufferhead into the fs */ | |
94 | static int ocfs2_modify_bh(struct inode *inode, struct buffer_head *bh, | |
95 | void (*modify)(struct buffer_head *, void *), void *private) | |
96 | { | |
97 | struct super_block *sb = inode->i_sb; | |
98 | handle_t *handle; | |
99 | int status; | |
100 | ||
0584974a JK |
101 | handle = ocfs2_start_trans(OCFS2_SB(sb), |
102 | OCFS2_QUOTA_BLOCK_UPDATE_CREDITS); | |
9e33d69f JK |
103 | if (IS_ERR(handle)) { |
104 | status = PTR_ERR(handle); | |
105 | mlog_errno(status); | |
106 | return status; | |
107 | } | |
0cf2f763 | 108 | status = ocfs2_journal_access_dq(handle, INODE_CACHE(inode), bh, |
13723d00 | 109 | OCFS2_JOURNAL_ACCESS_WRITE); |
9e33d69f JK |
110 | if (status < 0) { |
111 | mlog_errno(status); | |
112 | ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
113 | return status; | |
114 | } | |
115 | lock_buffer(bh); | |
116 | modify(bh, private); | |
117 | unlock_buffer(bh); | |
ec20cec7 JB |
118 | ocfs2_journal_dirty(handle, bh); |
119 | ||
9e33d69f JK |
120 | status = ocfs2_commit_trans(OCFS2_SB(sb), handle); |
121 | if (status < 0) { | |
122 | mlog_errno(status); | |
123 | return status; | |
124 | } | |
125 | return 0; | |
126 | } | |
127 | ||
fb8dd8d7 JK |
128 | /* |
129 | * Read quota block from a given logical offset. | |
130 | * | |
131 | * This function acquires ip_alloc_sem and thus it must not be called with a | |
132 | * transaction started. | |
133 | */ | |
134 | static int ocfs2_read_quota_block(struct inode *inode, u64 v_block, | |
135 | struct buffer_head **bh) | |
136 | { | |
137 | int rc = 0; | |
138 | struct buffer_head *tmp = *bh; | |
139 | ||
93f5920d JP |
140 | if (i_size_read(inode) >> inode->i_sb->s_blocksize_bits <= v_block) |
141 | return ocfs2_error(inode->i_sb, | |
142 | "Quota file %llu is probably corrupted! Requested 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 | ||
fb8dd8d7 JK |
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 | |
5f530de6 | 457 | * s_umount locked in shared mode. */ |
2205363d JK |
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; | |
6c5026c1 | 473 | unsigned int memalloc; |
2205363d | 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))); | |
6184fc0b JK |
502 | if (IS_ERR(dquot)) { |
503 | status = PTR_ERR(dquot); | |
2205363d JK |
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 | 523 | } |
bc8230ee | 524 | down_write(&sb_dqopt(sb)->dqio_sem); |
6c5026c1 | 525 | memalloc = memalloc_nofs_save(); |
7b9ca4c6 | 526 | spin_lock(&dquot->dq_dqb_lock); |
2205363d JK |
527 | /* Add usage from quota entry into quota changes |
528 | * of our node. Auxiliary variables are important | |
529 | * due to signedness */ | |
530 | spacechange = le64_to_cpu(dqblk->dqb_spacemod); | |
531 | inodechange = le64_to_cpu(dqblk->dqb_inodemod); | |
532 | dquot->dq_dqb.dqb_curspace += spacechange; | |
533 | dquot->dq_dqb.dqb_curinodes += inodechange; | |
7b9ca4c6 | 534 | spin_unlock(&dquot->dq_dqb_lock); |
2205363d JK |
535 | /* We want to drop reference held by the crashed |
536 | * node. Since we have our own reference we know | |
537 | * global structure actually won't be freed. */ | |
538 | status = ocfs2_global_release_dquot(dquot); | |
539 | if (status < 0) { | |
540 | mlog_errno(status); | |
541 | goto out_commit; | |
542 | } | |
543 | /* Release local quota file entry */ | |
0cf2f763 JB |
544 | status = ocfs2_journal_access_dq(handle, |
545 | INODE_CACHE(lqinode), | |
2205363d JK |
546 | qbh, OCFS2_JOURNAL_ACCESS_WRITE); |
547 | if (status < 0) { | |
548 | mlog_errno(status); | |
549 | goto out_commit; | |
550 | } | |
551 | lock_buffer(qbh); | |
93925579 AM |
552 | WARN_ON(!ocfs2_test_bit_unaligned(bit, dchunk->dqc_bitmap)); |
553 | ocfs2_clear_bit_unaligned(bit, dchunk->dqc_bitmap); | |
2205363d JK |
554 | le32_add_cpu(&dchunk->dqc_free, 1); |
555 | unlock_buffer(qbh); | |
ec20cec7 | 556 | ocfs2_journal_dirty(handle, qbh); |
2205363d | 557 | out_commit: |
6c5026c1 | 558 | memalloc_nofs_restore(memalloc); |
bc8230ee | 559 | up_write(&sb_dqopt(sb)->dqio_sem); |
2205363d | 560 | ocfs2_commit_trans(OCFS2_SB(sb), handle); |
80d73f15 JK |
561 | out_drop_lock: |
562 | ocfs2_unlock_global_qf(oinfo, 1); | |
2205363d JK |
563 | out_put_dquot: |
564 | dqput(dquot); | |
565 | out_put_bh: | |
566 | brelse(qbh); | |
567 | if (status < 0) | |
568 | break; | |
569 | } | |
570 | brelse(hbh); | |
571 | list_del(&rchunk->rc_list); | |
572 | kfree(rchunk->rc_bitmap); | |
573 | kfree(rchunk); | |
574 | if (status < 0) | |
575 | break; | |
576 | } | |
2205363d JK |
577 | if (status < 0) |
578 | free_recovery_list(&(rec->r_list[type])); | |
c1e8d35e TM |
579 | if (status) |
580 | mlog_errno(status); | |
2205363d JK |
581 | return status; |
582 | } | |
583 | ||
584 | /* Recover local quota files for given node different from us */ | |
585 | int ocfs2_finish_quota_recovery(struct ocfs2_super *osb, | |
586 | struct ocfs2_quota_recovery *rec, | |
587 | int slot_num) | |
588 | { | |
52362810 JK |
589 | unsigned int ino[OCFS2_MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE, |
590 | LOCAL_GROUP_QUOTA_SYSTEM_INODE }; | |
2205363d JK |
591 | struct super_block *sb = osb->sb; |
592 | struct ocfs2_local_disk_dqinfo *ldinfo; | |
593 | struct buffer_head *bh; | |
594 | handle_t *handle; | |
595 | int type; | |
596 | int status = 0; | |
597 | struct inode *lqinode; | |
598 | unsigned int flags; | |
599 | ||
619c200d SM |
600 | printk(KERN_NOTICE "ocfs2: Finishing quota recovery on device (%s) for " |
601 | "slot %u\n", osb->dev_str, slot_num); | |
602 | ||
5f530de6 | 603 | down_read(&sb->s_umount); |
52362810 | 604 | for (type = 0; type < OCFS2_MAXQUOTAS; type++) { |
2205363d JK |
605 | if (list_empty(&(rec->r_list[type]))) |
606 | continue; | |
38877a43 | 607 | trace_ocfs2_finish_quota_recovery(slot_num); |
2205363d JK |
608 | lqinode = ocfs2_get_system_file_inode(osb, ino[type], slot_num); |
609 | if (!lqinode) { | |
610 | status = -ENOENT; | |
611 | goto out; | |
612 | } | |
613 | status = ocfs2_inode_lock_full(lqinode, NULL, 1, | |
614 | OCFS2_META_LOCK_NOQUEUE); | |
615 | /* Someone else is holding the lock? Then he must be | |
616 | * doing the recovery. Just skip the file... */ | |
617 | if (status == -EAGAIN) { | |
619c200d SM |
618 | printk(KERN_NOTICE "ocfs2: Skipping quota recovery on " |
619 | "device (%s) for slot %d because quota file is " | |
620 | "locked.\n", osb->dev_str, slot_num); | |
2205363d JK |
621 | status = 0; |
622 | goto out_put; | |
623 | } else if (status < 0) { | |
624 | mlog_errno(status); | |
625 | goto out_put; | |
626 | } | |
627 | /* Now read local header */ | |
85eb8b73 JB |
628 | bh = NULL; |
629 | status = ocfs2_read_quota_block(lqinode, 0, &bh); | |
630 | if (status) { | |
2205363d JK |
631 | mlog_errno(status); |
632 | mlog(ML_ERROR, "failed to read quota file info header " | |
633 | "(slot=%d type=%d)\n", slot_num, type); | |
634 | goto out_lock; | |
635 | } | |
636 | ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + | |
637 | OCFS2_LOCAL_INFO_OFF); | |
638 | /* Is recovery still needed? */ | |
639 | flags = le32_to_cpu(ldinfo->dqi_flags); | |
640 | if (!(flags & OLQF_CLEAN)) | |
641 | status = ocfs2_recover_local_quota_file(lqinode, | |
642 | type, | |
643 | rec); | |
644 | /* We don't want to mark file as clean when it is actually | |
645 | * active */ | |
646 | if (slot_num == osb->slot_num) | |
647 | goto out_bh; | |
648 | /* Mark quota file as clean if we are recovering quota file of | |
649 | * some other node. */ | |
0584974a JK |
650 | handle = ocfs2_start_trans(osb, |
651 | OCFS2_LOCAL_QINFO_WRITE_CREDITS); | |
2205363d JK |
652 | if (IS_ERR(handle)) { |
653 | status = PTR_ERR(handle); | |
654 | mlog_errno(status); | |
655 | goto out_bh; | |
656 | } | |
0cf2f763 JB |
657 | status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), |
658 | bh, | |
13723d00 | 659 | OCFS2_JOURNAL_ACCESS_WRITE); |
2205363d JK |
660 | if (status < 0) { |
661 | mlog_errno(status); | |
662 | goto out_trans; | |
663 | } | |
664 | lock_buffer(bh); | |
665 | ldinfo->dqi_flags = cpu_to_le32(flags | OLQF_CLEAN); | |
666 | unlock_buffer(bh); | |
ec20cec7 | 667 | ocfs2_journal_dirty(handle, bh); |
2205363d JK |
668 | out_trans: |
669 | ocfs2_commit_trans(osb, handle); | |
670 | out_bh: | |
671 | brelse(bh); | |
672 | out_lock: | |
673 | ocfs2_inode_unlock(lqinode, 1); | |
674 | out_put: | |
675 | iput(lqinode); | |
676 | if (status < 0) | |
677 | break; | |
678 | } | |
679 | out: | |
5f530de6 | 680 | up_read(&sb->s_umount); |
2205363d JK |
681 | kfree(rec); |
682 | return status; | |
683 | } | |
684 | ||
9e33d69f JK |
685 | /* Read information header from quota file */ |
686 | static int ocfs2_local_read_info(struct super_block *sb, int type) | |
687 | { | |
688 | struct ocfs2_local_disk_dqinfo *ldinfo; | |
689 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
690 | struct ocfs2_mem_dqinfo *oinfo; | |
691 | struct inode *lqinode = sb_dqopt(sb)->files[type]; | |
692 | int status; | |
693 | struct buffer_head *bh = NULL; | |
2205363d | 694 | struct ocfs2_quota_recovery *rec; |
35fccce2 | 695 | int locked = 0, global_read = 0; |
9e33d69f | 696 | |
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."); | |
35fccce2 | 703 | status = -ENOMEM; |
9e33d69f JK |
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; | |
35fccce2 | 716 | global_read = 1; |
9e33d69f JK |
717 | |
718 | status = ocfs2_inode_lock(lqinode, &oinfo->dqi_lqi_bh, 1); | |
719 | if (status < 0) { | |
720 | mlog_errno(status); | |
721 | goto out_err; | |
722 | } | |
723 | locked = 1; | |
724 | ||
725 | /* Now read local header */ | |
85eb8b73 JB |
726 | status = ocfs2_read_quota_block(lqinode, 0, &bh); |
727 | if (status) { | |
9e33d69f JK |
728 | mlog_errno(status); |
729 | mlog(ML_ERROR, "failed to read quota file info header " | |
730 | "(type=%d)\n", type); | |
731 | goto out_err; | |
732 | } | |
733 | ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + | |
734 | OCFS2_LOCAL_INFO_OFF); | |
96827adc | 735 | oinfo->dqi_flags = le32_to_cpu(ldinfo->dqi_flags); |
9e33d69f JK |
736 | oinfo->dqi_chunks = le32_to_cpu(ldinfo->dqi_chunks); |
737 | oinfo->dqi_blocks = le32_to_cpu(ldinfo->dqi_blocks); | |
ae4f6ef1 | 738 | oinfo->dqi_libh = bh; |
9e33d69f JK |
739 | |
740 | /* We crashed when using local quota file? */ | |
96827adc | 741 | if (!(oinfo->dqi_flags & OLQF_CLEAN)) { |
2205363d JK |
742 | rec = OCFS2_SB(sb)->quota_rec; |
743 | if (!rec) { | |
744 | rec = ocfs2_alloc_quota_recovery(); | |
745 | if (!rec) { | |
746 | status = -ENOMEM; | |
747 | mlog_errno(status); | |
748 | goto out_err; | |
749 | } | |
750 | OCFS2_SB(sb)->quota_rec = rec; | |
751 | } | |
9e33d69f | 752 | |
2205363d JK |
753 | status = ocfs2_recovery_load_quota(lqinode, ldinfo, type, |
754 | &rec->r_list[type]); | |
755 | if (status < 0) { | |
756 | mlog_errno(status); | |
757 | goto out_err; | |
758 | } | |
759 | } | |
760 | ||
761 | status = ocfs2_load_local_quota_bitmaps(lqinode, | |
9e33d69f JK |
762 | ldinfo, |
763 | &oinfo->dqi_chunk); | |
764 | if (status < 0) { | |
765 | mlog_errno(status); | |
766 | goto out_err; | |
767 | } | |
768 | ||
769 | /* Now mark quota file as used */ | |
96827adc | 770 | oinfo->dqi_flags &= ~OLQF_CLEAN; |
9e33d69f JK |
771 | status = ocfs2_modify_bh(lqinode, bh, olq_update_info, info); |
772 | if (status < 0) { | |
773 | mlog_errno(status); | |
774 | goto out_err; | |
775 | } | |
776 | ||
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); | |
35fccce2 JQ |
787 | if (global_read) |
788 | cancel_delayed_work_sync(&oinfo->dqi_sync_work); | |
9e33d69f JK |
789 | kfree(oinfo); |
790 | } | |
791 | brelse(bh); | |
35fccce2 | 792 | return status; |
9e33d69f JK |
793 | } |
794 | ||
795 | /* Write local info to quota file */ | |
796 | static int ocfs2_local_write_info(struct super_block *sb, int type) | |
797 | { | |
798 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
799 | struct buffer_head *bh = ((struct ocfs2_mem_dqinfo *)info->dqi_priv) | |
ae4f6ef1 | 800 | ->dqi_libh; |
9e33d69f JK |
801 | int status; |
802 | ||
803 | status = ocfs2_modify_bh(sb_dqopt(sb)->files[type], bh, olq_update_info, | |
804 | info); | |
805 | if (status < 0) { | |
806 | mlog_errno(status); | |
807 | return -1; | |
808 | } | |
809 | ||
810 | return 0; | |
811 | } | |
812 | ||
813 | /* Release info from memory */ | |
814 | static int ocfs2_local_free_info(struct super_block *sb, int type) | |
815 | { | |
816 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
817 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
818 | struct ocfs2_quota_chunk *chunk; | |
819 | struct ocfs2_local_disk_chunk *dchunk; | |
820 | int mark_clean = 1, len; | |
d32840ad | 821 | int status = 0; |
9e33d69f JK |
822 | |
823 | iput(oinfo->dqi_gqinode); | |
824 | ocfs2_simple_drop_lockres(OCFS2_SB(sb), &oinfo->dqi_gqlock); | |
825 | ocfs2_lock_res_free(&oinfo->dqi_gqlock); | |
826 | list_for_each_entry(chunk, &oinfo->dqi_chunk, qc_chunk) { | |
827 | dchunk = (struct ocfs2_local_disk_chunk *) | |
828 | (chunk->qc_headerbh->b_data); | |
829 | if (chunk->qc_num < oinfo->dqi_chunks - 1) { | |
830 | len = ol_chunk_entries(sb); | |
831 | } else { | |
832 | len = (oinfo->dqi_blocks - | |
833 | ol_quota_chunk_block(sb, chunk->qc_num) - 1) | |
834 | * ol_quota_entries_per_block(sb); | |
835 | } | |
836 | /* Not all entries free? Bug! */ | |
837 | if (le32_to_cpu(dchunk->dqc_free) != len) { | |
838 | mlog(ML_ERROR, "releasing quota file with used " | |
839 | "entries (type=%d)\n", type); | |
840 | mark_clean = 0; | |
841 | } | |
842 | } | |
843 | ocfs2_release_local_quota_bitmaps(&oinfo->dqi_chunk); | |
844 | ||
5f530de6 JK |
845 | /* |
846 | * s_umount held in exclusive mode protects us against racing with | |
847 | * recovery thread... | |
848 | */ | |
2205363d JK |
849 | if (oinfo->dqi_rec) { |
850 | ocfs2_free_quota_recovery(oinfo->dqi_rec); | |
851 | mark_clean = 0; | |
852 | } | |
853 | ||
9e33d69f JK |
854 | if (!mark_clean) |
855 | goto out; | |
856 | ||
857 | /* Mark local file as clean */ | |
96827adc | 858 | oinfo->dqi_flags |= OLQF_CLEAN; |
9e33d69f | 859 | status = ocfs2_modify_bh(sb_dqopt(sb)->files[type], |
ae4f6ef1 | 860 | oinfo->dqi_libh, |
9e33d69f JK |
861 | olq_update_info, |
862 | info); | |
d32840ad | 863 | if (status < 0) |
9e33d69f | 864 | mlog_errno(status); |
9e33d69f JK |
865 | out: |
866 | ocfs2_inode_unlock(sb_dqopt(sb)->files[type], 1); | |
ae4f6ef1 | 867 | brelse(oinfo->dqi_libh); |
9e33d69f JK |
868 | brelse(oinfo->dqi_lqi_bh); |
869 | kfree(oinfo); | |
d32840ad | 870 | return status; |
9e33d69f JK |
871 | } |
872 | ||
873 | static void olq_set_dquot(struct buffer_head *bh, void *private) | |
874 | { | |
875 | struct ocfs2_dquot *od = private; | |
876 | struct ocfs2_local_disk_dqblk *dqblk; | |
877 | struct super_block *sb = od->dq_dquot.dq_sb; | |
878 | ||
879 | dqblk = (struct ocfs2_local_disk_dqblk *)(bh->b_data | |
880 | + ol_dqblk_block_offset(sb, od->dq_local_off)); | |
881 | ||
4c376dca EB |
882 | dqblk->dqb_id = cpu_to_le64(from_kqid(&init_user_ns, |
883 | od->dq_dquot.dq_id)); | |
7b9ca4c6 | 884 | spin_lock(&od->dq_dquot.dq_dqb_lock); |
9e33d69f JK |
885 | dqblk->dqb_spacemod = cpu_to_le64(od->dq_dquot.dq_dqb.dqb_curspace - |
886 | od->dq_origspace); | |
887 | dqblk->dqb_inodemod = cpu_to_le64(od->dq_dquot.dq_dqb.dqb_curinodes - | |
888 | od->dq_originodes); | |
7b9ca4c6 | 889 | spin_unlock(&od->dq_dquot.dq_dqb_lock); |
38877a43 TM |
890 | trace_olq_set_dquot( |
891 | (unsigned long long)le64_to_cpu(dqblk->dqb_spacemod), | |
892 | (unsigned long long)le64_to_cpu(dqblk->dqb_inodemod), | |
4c376dca | 893 | from_kqid(&init_user_ns, od->dq_dquot.dq_id)); |
9e33d69f JK |
894 | } |
895 | ||
896 | /* Write dquot to local quota file */ | |
741e1289 | 897 | int ocfs2_local_write_dquot(struct dquot *dquot) |
9e33d69f JK |
898 | { |
899 | struct super_block *sb = dquot->dq_sb; | |
900 | struct ocfs2_dquot *od = OCFS2_DQUOT(dquot); | |
f64dd44e | 901 | struct buffer_head *bh; |
4c376dca | 902 | struct inode *lqinode = sb_dqopt(sb)->files[dquot->dq_id.type]; |
9e33d69f JK |
903 | int status; |
904 | ||
f64dd44e JK |
905 | status = ocfs2_read_quota_phys_block(lqinode, od->dq_local_phys_blk, |
906 | &bh); | |
85eb8b73 | 907 | if (status) { |
9e33d69f JK |
908 | mlog_errno(status); |
909 | goto out; | |
910 | } | |
f64dd44e | 911 | status = ocfs2_modify_bh(lqinode, bh, olq_set_dquot, od); |
9e33d69f JK |
912 | if (status < 0) { |
913 | mlog_errno(status); | |
914 | goto out; | |
915 | } | |
916 | out: | |
917 | brelse(bh); | |
918 | return status; | |
919 | } | |
920 | ||
921 | /* Find free entry in local quota file */ | |
922 | static struct ocfs2_quota_chunk *ocfs2_find_free_entry(struct super_block *sb, | |
923 | int type, | |
924 | int *offset) | |
925 | { | |
926 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
927 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
81cd1ae9 | 928 | struct ocfs2_quota_chunk *chunk = NULL, *iter; |
9e33d69f JK |
929 | struct ocfs2_local_disk_chunk *dchunk; |
930 | int found = 0, len; | |
931 | ||
81cd1ae9 | 932 | list_for_each_entry(iter, &oinfo->dqi_chunk, qc_chunk) { |
9e33d69f | 933 | dchunk = (struct ocfs2_local_disk_chunk *) |
81cd1ae9 | 934 | iter->qc_headerbh->b_data; |
9e33d69f | 935 | if (le32_to_cpu(dchunk->dqc_free) > 0) { |
81cd1ae9 | 936 | chunk = iter; |
9e33d69f JK |
937 | break; |
938 | } | |
939 | } | |
81cd1ae9 | 940 | if (!chunk) |
9e33d69f JK |
941 | return NULL; |
942 | ||
943 | if (chunk->qc_num < oinfo->dqi_chunks - 1) { | |
944 | len = ol_chunk_entries(sb); | |
945 | } else { | |
946 | len = (oinfo->dqi_blocks - | |
947 | ol_quota_chunk_block(sb, chunk->qc_num) - 1) | |
948 | * ol_quota_entries_per_block(sb); | |
949 | } | |
950 | ||
93925579 | 951 | found = ocfs2_find_next_zero_bit_unaligned(dchunk->dqc_bitmap, len, 0); |
9e33d69f JK |
952 | /* We failed? */ |
953 | if (found == len) { | |
954 | mlog(ML_ERROR, "Did not find empty entry in chunk %d with %u" | |
955 | " entries free (type=%d)\n", chunk->qc_num, | |
956 | le32_to_cpu(dchunk->dqc_free), type); | |
957 | return ERR_PTR(-EIO); | |
958 | } | |
959 | *offset = found; | |
960 | return chunk; | |
961 | } | |
962 | ||
963 | /* Add new chunk to the local quota file */ | |
964 | static struct ocfs2_quota_chunk *ocfs2_local_quota_add_chunk( | |
965 | struct super_block *sb, | |
966 | int type, | |
967 | int *offset) | |
968 | { | |
969 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
970 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
971 | struct inode *lqinode = sb_dqopt(sb)->files[type]; | |
972 | struct ocfs2_quota_chunk *chunk = NULL; | |
973 | struct ocfs2_local_disk_chunk *dchunk; | |
974 | int status; | |
975 | handle_t *handle; | |
0e7f387b | 976 | struct buffer_head *bh = NULL, *dbh = NULL; |
9e33d69f JK |
977 | u64 p_blkno; |
978 | ||
979 | /* We are protected by dqio_sem so no locking needed */ | |
5693486b | 980 | status = ocfs2_extend_no_holes(lqinode, NULL, |
f17c20dd JB |
981 | i_size_read(lqinode) + 2 * sb->s_blocksize, |
982 | i_size_read(lqinode)); | |
9e33d69f JK |
983 | if (status < 0) { |
984 | mlog_errno(status); | |
985 | goto out; | |
986 | } | |
987 | status = ocfs2_simple_size_update(lqinode, oinfo->dqi_lqi_bh, | |
f17c20dd | 988 | i_size_read(lqinode) + 2 * sb->s_blocksize); |
9e33d69f JK |
989 | if (status < 0) { |
990 | mlog_errno(status); | |
991 | goto out; | |
992 | } | |
993 | ||
994 | chunk = kmem_cache_alloc(ocfs2_qf_chunk_cachep, GFP_NOFS); | |
995 | if (!chunk) { | |
996 | status = -ENOMEM; | |
997 | mlog_errno(status); | |
998 | goto out; | |
999 | } | |
0584974a JK |
1000 | /* Local quota info and two new blocks we initialize */ |
1001 | handle = ocfs2_start_trans(OCFS2_SB(sb), | |
1002 | OCFS2_LOCAL_QINFO_WRITE_CREDITS + | |
1003 | 2 * OCFS2_QUOTA_BLOCK_UPDATE_CREDITS); | |
0e7f387b JK |
1004 | if (IS_ERR(handle)) { |
1005 | status = PTR_ERR(handle); | |
1006 | mlog_errno(status); | |
1007 | goto out; | |
1008 | } | |
9e33d69f | 1009 | |
0e7f387b | 1010 | /* Initialize chunk header */ |
9e33d69f JK |
1011 | status = ocfs2_extent_map_get_blocks(lqinode, oinfo->dqi_blocks, |
1012 | &p_blkno, NULL, NULL); | |
9e33d69f JK |
1013 | if (status < 0) { |
1014 | mlog_errno(status); | |
0e7f387b | 1015 | goto out_trans; |
9e33d69f JK |
1016 | } |
1017 | bh = sb_getblk(sb, p_blkno); | |
1018 | if (!bh) { | |
1019 | status = -ENOMEM; | |
1020 | mlog_errno(status); | |
0e7f387b | 1021 | goto out_trans; |
9e33d69f JK |
1022 | } |
1023 | dchunk = (struct ocfs2_local_disk_chunk *)bh->b_data; | |
8cb471e8 | 1024 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(lqinode), bh); |
0cf2f763 | 1025 | status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), bh, |
0e7f387b | 1026 | OCFS2_JOURNAL_ACCESS_CREATE); |
9e33d69f JK |
1027 | if (status < 0) { |
1028 | mlog_errno(status); | |
1029 | goto out_trans; | |
1030 | } | |
1031 | lock_buffer(bh); | |
df32b334 | 1032 | dchunk->dqc_free = cpu_to_le32(ol_quota_entries_per_block(sb)); |
9e33d69f JK |
1033 | memset(dchunk->dqc_bitmap, 0, |
1034 | sb->s_blocksize - sizeof(struct ocfs2_local_disk_chunk) - | |
1035 | OCFS2_QBLK_RESERVED_SPACE); | |
9e33d69f | 1036 | unlock_buffer(bh); |
ec20cec7 | 1037 | ocfs2_journal_dirty(handle, bh); |
9e33d69f | 1038 | |
0e7f387b | 1039 | /* Initialize new block with structures */ |
0e7f387b JK |
1040 | status = ocfs2_extent_map_get_blocks(lqinode, oinfo->dqi_blocks + 1, |
1041 | &p_blkno, NULL, NULL); | |
0e7f387b JK |
1042 | if (status < 0) { |
1043 | mlog_errno(status); | |
1044 | goto out_trans; | |
1045 | } | |
1046 | dbh = sb_getblk(sb, p_blkno); | |
1047 | if (!dbh) { | |
1048 | status = -ENOMEM; | |
1049 | mlog_errno(status); | |
1050 | goto out_trans; | |
1051 | } | |
8cb471e8 | 1052 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(lqinode), dbh); |
0cf2f763 | 1053 | status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), dbh, |
0e7f387b JK |
1054 | OCFS2_JOURNAL_ACCESS_CREATE); |
1055 | if (status < 0) { | |
1056 | mlog_errno(status); | |
1057 | goto out_trans; | |
1058 | } | |
1059 | lock_buffer(dbh); | |
1060 | memset(dbh->b_data, 0, sb->s_blocksize - OCFS2_QBLK_RESERVED_SPACE); | |
1061 | unlock_buffer(dbh); | |
ec20cec7 | 1062 | ocfs2_journal_dirty(handle, dbh); |
0e7f387b JK |
1063 | |
1064 | /* Update local quotafile info */ | |
9e33d69f JK |
1065 | oinfo->dqi_blocks += 2; |
1066 | oinfo->dqi_chunks++; | |
1067 | status = ocfs2_local_write_info(sb, type); | |
1068 | if (status < 0) { | |
1069 | mlog_errno(status); | |
1070 | goto out_trans; | |
1071 | } | |
1072 | status = ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1073 | if (status < 0) { | |
1074 | mlog_errno(status); | |
1075 | goto out; | |
1076 | } | |
1077 | ||
1078 | list_add_tail(&chunk->qc_chunk, &oinfo->dqi_chunk); | |
1079 | chunk->qc_num = list_entry(chunk->qc_chunk.prev, | |
1080 | struct ocfs2_quota_chunk, | |
1081 | qc_chunk)->qc_num + 1; | |
1082 | chunk->qc_headerbh = bh; | |
1083 | *offset = 0; | |
1084 | return chunk; | |
1085 | out_trans: | |
1086 | ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1087 | out: | |
1088 | brelse(bh); | |
0e7f387b | 1089 | brelse(dbh); |
9e33d69f JK |
1090 | kmem_cache_free(ocfs2_qf_chunk_cachep, chunk); |
1091 | return ERR_PTR(status); | |
1092 | } | |
1093 | ||
1094 | /* Find free entry in local quota file */ | |
1095 | static struct ocfs2_quota_chunk *ocfs2_extend_local_quota_file( | |
1096 | struct super_block *sb, | |
1097 | int type, | |
1098 | int *offset) | |
1099 | { | |
1100 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
1101 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
1102 | struct ocfs2_quota_chunk *chunk; | |
1103 | struct inode *lqinode = sb_dqopt(sb)->files[type]; | |
1104 | struct ocfs2_local_disk_chunk *dchunk; | |
1105 | int epb = ol_quota_entries_per_block(sb); | |
1106 | unsigned int chunk_blocks; | |
0e7f387b JK |
1107 | struct buffer_head *bh; |
1108 | u64 p_blkno; | |
9e33d69f JK |
1109 | int status; |
1110 | handle_t *handle; | |
1111 | ||
1112 | if (list_empty(&oinfo->dqi_chunk)) | |
1113 | return ocfs2_local_quota_add_chunk(sb, type, offset); | |
1114 | /* Is the last chunk full? */ | |
1115 | chunk = list_entry(oinfo->dqi_chunk.prev, | |
1116 | struct ocfs2_quota_chunk, qc_chunk); | |
1117 | chunk_blocks = oinfo->dqi_blocks - | |
1118 | ol_quota_chunk_block(sb, chunk->qc_num) - 1; | |
1119 | if (ol_chunk_blocks(sb) == chunk_blocks) | |
1120 | return ocfs2_local_quota_add_chunk(sb, type, offset); | |
1121 | ||
1122 | /* We are protected by dqio_sem so no locking needed */ | |
5693486b | 1123 | status = ocfs2_extend_no_holes(lqinode, NULL, |
f17c20dd JB |
1124 | i_size_read(lqinode) + sb->s_blocksize, |
1125 | i_size_read(lqinode)); | |
9e33d69f JK |
1126 | if (status < 0) { |
1127 | mlog_errno(status); | |
1128 | goto out; | |
1129 | } | |
1130 | status = ocfs2_simple_size_update(lqinode, oinfo->dqi_lqi_bh, | |
f17c20dd | 1131 | i_size_read(lqinode) + sb->s_blocksize); |
9e33d69f JK |
1132 | if (status < 0) { |
1133 | mlog_errno(status); | |
1134 | goto out; | |
1135 | } | |
0e7f387b JK |
1136 | |
1137 | /* Get buffer from the just added block */ | |
0e7f387b JK |
1138 | status = ocfs2_extent_map_get_blocks(lqinode, oinfo->dqi_blocks, |
1139 | &p_blkno, NULL, NULL); | |
0e7f387b JK |
1140 | if (status < 0) { |
1141 | mlog_errno(status); | |
1142 | goto out; | |
1143 | } | |
1144 | bh = sb_getblk(sb, p_blkno); | |
1145 | if (!bh) { | |
1146 | status = -ENOMEM; | |
1147 | mlog_errno(status); | |
1148 | goto out; | |
1149 | } | |
8cb471e8 | 1150 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(lqinode), bh); |
0e7f387b | 1151 | |
0584974a JK |
1152 | /* Local quota info, chunk header and the new block we initialize */ |
1153 | handle = ocfs2_start_trans(OCFS2_SB(sb), | |
1154 | OCFS2_LOCAL_QINFO_WRITE_CREDITS + | |
1155 | 2 * OCFS2_QUOTA_BLOCK_UPDATE_CREDITS); | |
9e33d69f JK |
1156 | if (IS_ERR(handle)) { |
1157 | status = PTR_ERR(handle); | |
1158 | mlog_errno(status); | |
1159 | goto out; | |
1160 | } | |
0e7f387b | 1161 | /* Zero created block */ |
0cf2f763 | 1162 | status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), bh, |
0e7f387b JK |
1163 | OCFS2_JOURNAL_ACCESS_CREATE); |
1164 | if (status < 0) { | |
1165 | mlog_errno(status); | |
1166 | goto out_trans; | |
1167 | } | |
1168 | lock_buffer(bh); | |
1169 | memset(bh->b_data, 0, sb->s_blocksize); | |
1170 | unlock_buffer(bh); | |
ec20cec7 JB |
1171 | ocfs2_journal_dirty(handle, bh); |
1172 | ||
0e7f387b | 1173 | /* Update chunk header */ |
0cf2f763 JB |
1174 | status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), |
1175 | chunk->qc_headerbh, | |
9e33d69f JK |
1176 | OCFS2_JOURNAL_ACCESS_WRITE); |
1177 | if (status < 0) { | |
1178 | mlog_errno(status); | |
1179 | goto out_trans; | |
1180 | } | |
1181 | ||
1182 | dchunk = (struct ocfs2_local_disk_chunk *)chunk->qc_headerbh->b_data; | |
1183 | lock_buffer(chunk->qc_headerbh); | |
1184 | le32_add_cpu(&dchunk->dqc_free, ol_quota_entries_per_block(sb)); | |
1185 | unlock_buffer(chunk->qc_headerbh); | |
ec20cec7 JB |
1186 | ocfs2_journal_dirty(handle, chunk->qc_headerbh); |
1187 | ||
0e7f387b | 1188 | /* Update file header */ |
9e33d69f JK |
1189 | oinfo->dqi_blocks++; |
1190 | status = ocfs2_local_write_info(sb, type); | |
1191 | if (status < 0) { | |
1192 | mlog_errno(status); | |
1193 | goto out_trans; | |
1194 | } | |
1195 | ||
1196 | status = ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1197 | if (status < 0) { | |
1198 | mlog_errno(status); | |
1199 | goto out; | |
1200 | } | |
1201 | *offset = chunk_blocks * epb; | |
1202 | return chunk; | |
1203 | out_trans: | |
1204 | ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1205 | out: | |
1206 | return ERR_PTR(status); | |
1207 | } | |
1208 | ||
df32b334 | 1209 | static void olq_alloc_dquot(struct buffer_head *bh, void *private) |
9e33d69f JK |
1210 | { |
1211 | int *offset = private; | |
1212 | struct ocfs2_local_disk_chunk *dchunk; | |
1213 | ||
1214 | dchunk = (struct ocfs2_local_disk_chunk *)bh->b_data; | |
93925579 | 1215 | ocfs2_set_bit_unaligned(*offset, dchunk->dqc_bitmap); |
9e33d69f JK |
1216 | le32_add_cpu(&dchunk->dqc_free, -1); |
1217 | } | |
1218 | ||
1219 | /* Create dquot in the local file for given id */ | |
fb8dd8d7 | 1220 | int ocfs2_create_local_dquot(struct dquot *dquot) |
9e33d69f JK |
1221 | { |
1222 | struct super_block *sb = dquot->dq_sb; | |
4c376dca | 1223 | int type = dquot->dq_id.type; |
9e33d69f JK |
1224 | struct inode *lqinode = sb_dqopt(sb)->files[type]; |
1225 | struct ocfs2_quota_chunk *chunk; | |
1226 | struct ocfs2_dquot *od = OCFS2_DQUOT(dquot); | |
1227 | int offset; | |
1228 | int status; | |
f64dd44e | 1229 | u64 pcount; |
9e33d69f | 1230 | |
f64dd44e | 1231 | down_write(&OCFS2_I(lqinode)->ip_alloc_sem); |
9e33d69f JK |
1232 | chunk = ocfs2_find_free_entry(sb, type, &offset); |
1233 | if (!chunk) { | |
1234 | chunk = ocfs2_extend_local_quota_file(sb, type, &offset); | |
f64dd44e JK |
1235 | if (IS_ERR(chunk)) { |
1236 | status = PTR_ERR(chunk); | |
1237 | goto out; | |
1238 | } | |
9e33d69f | 1239 | } else if (IS_ERR(chunk)) { |
f64dd44e JK |
1240 | status = PTR_ERR(chunk); |
1241 | goto out; | |
9e33d69f JK |
1242 | } |
1243 | od->dq_local_off = ol_dqblk_off(sb, chunk->qc_num, offset); | |
1244 | od->dq_chunk = chunk; | |
f64dd44e JK |
1245 | status = ocfs2_extent_map_get_blocks(lqinode, |
1246 | ol_dqblk_block(sb, chunk->qc_num, offset), | |
1247 | &od->dq_local_phys_blk, | |
1248 | &pcount, | |
1249 | NULL); | |
1b13a703 AC |
1250 | if (status < 0) { |
1251 | mlog_errno(status); | |
1252 | goto out; | |
1253 | } | |
9e33d69f JK |
1254 | |
1255 | /* Initialize dquot structure on disk */ | |
1256 | status = ocfs2_local_write_dquot(dquot); | |
1257 | if (status < 0) { | |
1258 | mlog_errno(status); | |
1259 | goto out; | |
1260 | } | |
1261 | ||
1262 | /* Mark structure as allocated */ | |
1263 | status = ocfs2_modify_bh(lqinode, chunk->qc_headerbh, olq_alloc_dquot, | |
1264 | &offset); | |
1265 | if (status < 0) { | |
1266 | mlog_errno(status); | |
1267 | goto out; | |
1268 | } | |
1269 | out: | |
f64dd44e | 1270 | up_write(&OCFS2_I(lqinode)->ip_alloc_sem); |
9e33d69f JK |
1271 | return status; |
1272 | } | |
1273 | ||
fb8dd8d7 JK |
1274 | /* |
1275 | * Release dquot structure from local quota file. ocfs2_release_dquot() has | |
1276 | * already started a transaction and written all changes to global quota file | |
1277 | */ | |
1278 | int ocfs2_local_release_dquot(handle_t *handle, struct dquot *dquot) | |
9e33d69f JK |
1279 | { |
1280 | int status; | |
4c376dca | 1281 | int type = dquot->dq_id.type; |
9e33d69f JK |
1282 | struct ocfs2_dquot *od = OCFS2_DQUOT(dquot); |
1283 | struct super_block *sb = dquot->dq_sb; | |
1284 | struct ocfs2_local_disk_chunk *dchunk; | |
1285 | int offset; | |
9e33d69f | 1286 | |
0cf2f763 JB |
1287 | status = ocfs2_journal_access_dq(handle, |
1288 | INODE_CACHE(sb_dqopt(sb)->files[type]), | |
9e33d69f JK |
1289 | od->dq_chunk->qc_headerbh, OCFS2_JOURNAL_ACCESS_WRITE); |
1290 | if (status < 0) { | |
1291 | mlog_errno(status); | |
1292 | goto out; | |
1293 | } | |
1294 | offset = ol_dqblk_chunk_off(sb, od->dq_chunk->qc_num, | |
1295 | od->dq_local_off); | |
1296 | dchunk = (struct ocfs2_local_disk_chunk *) | |
1297 | (od->dq_chunk->qc_headerbh->b_data); | |
1298 | /* Mark structure as freed */ | |
1299 | lock_buffer(od->dq_chunk->qc_headerbh); | |
93925579 | 1300 | ocfs2_clear_bit_unaligned(offset, dchunk->dqc_bitmap); |
9e33d69f JK |
1301 | le32_add_cpu(&dchunk->dqc_free, 1); |
1302 | unlock_buffer(od->dq_chunk->qc_headerbh); | |
ec20cec7 JB |
1303 | ocfs2_journal_dirty(handle, od->dq_chunk->qc_headerbh); |
1304 | ||
9e33d69f | 1305 | out: |
9e33d69f JK |
1306 | return status; |
1307 | } | |
1308 | ||
1472da5f | 1309 | static const struct quota_format_ops ocfs2_format_ops = { |
9e33d69f JK |
1310 | .check_quota_file = ocfs2_local_check_quota_file, |
1311 | .read_file_info = ocfs2_local_read_info, | |
1312 | .write_file_info = ocfs2_global_write_info, | |
1313 | .free_file_info = ocfs2_local_free_info, | |
9e33d69f JK |
1314 | }; |
1315 | ||
1316 | struct quota_format_type ocfs2_quota_format = { | |
1317 | .qf_fmt_id = QFMT_OCFS2, | |
1318 | .qf_ops = &ocfs2_format_ops, | |
1319 | .qf_owner = THIS_MODULE | |
1320 | }; |