2 * Implementation of operations over global quota file
4 #include <linux/spinlock.h>
6 #include <linux/quota.h>
7 #include <linux/quotaops.h>
8 #include <linux/dqblk_qtree.h>
9 #include <linux/jiffies.h>
10 #include <linux/writeback.h>
11 #include <linux/workqueue.h>
13 #define MLOG_MASK_PREFIX ML_QUOTA
14 #include <cluster/masklog.h>
19 #include "blockcheck.h"
28 static struct workqueue_struct
*ocfs2_quota_wq
= NULL
;
30 static void qsync_work_fn(struct work_struct
*work
);
32 static void ocfs2_global_disk2memdqb(struct dquot
*dquot
, void *dp
)
34 struct ocfs2_global_disk_dqblk
*d
= dp
;
35 struct mem_dqblk
*m
= &dquot
->dq_dqb
;
37 /* Update from disk only entries not set by the admin */
38 if (!test_bit(DQ_LASTSET_B
+ QIF_ILIMITS_B
, &dquot
->dq_flags
)) {
39 m
->dqb_ihardlimit
= le64_to_cpu(d
->dqb_ihardlimit
);
40 m
->dqb_isoftlimit
= le64_to_cpu(d
->dqb_isoftlimit
);
42 if (!test_bit(DQ_LASTSET_B
+ QIF_INODES_B
, &dquot
->dq_flags
))
43 m
->dqb_curinodes
= le64_to_cpu(d
->dqb_curinodes
);
44 if (!test_bit(DQ_LASTSET_B
+ QIF_BLIMITS_B
, &dquot
->dq_flags
)) {
45 m
->dqb_bhardlimit
= le64_to_cpu(d
->dqb_bhardlimit
);
46 m
->dqb_bsoftlimit
= le64_to_cpu(d
->dqb_bsoftlimit
);
48 if (!test_bit(DQ_LASTSET_B
+ QIF_SPACE_B
, &dquot
->dq_flags
))
49 m
->dqb_curspace
= le64_to_cpu(d
->dqb_curspace
);
50 if (!test_bit(DQ_LASTSET_B
+ QIF_BTIME_B
, &dquot
->dq_flags
))
51 m
->dqb_btime
= le64_to_cpu(d
->dqb_btime
);
52 if (!test_bit(DQ_LASTSET_B
+ QIF_ITIME_B
, &dquot
->dq_flags
))
53 m
->dqb_itime
= le64_to_cpu(d
->dqb_itime
);
54 OCFS2_DQUOT(dquot
)->dq_use_count
= le32_to_cpu(d
->dqb_use_count
);
57 static void ocfs2_global_mem2diskdqb(void *dp
, struct dquot
*dquot
)
59 struct ocfs2_global_disk_dqblk
*d
= dp
;
60 struct mem_dqblk
*m
= &dquot
->dq_dqb
;
62 d
->dqb_id
= cpu_to_le32(dquot
->dq_id
);
63 d
->dqb_use_count
= cpu_to_le32(OCFS2_DQUOT(dquot
)->dq_use_count
);
64 d
->dqb_ihardlimit
= cpu_to_le64(m
->dqb_ihardlimit
);
65 d
->dqb_isoftlimit
= cpu_to_le64(m
->dqb_isoftlimit
);
66 d
->dqb_curinodes
= cpu_to_le64(m
->dqb_curinodes
);
67 d
->dqb_bhardlimit
= cpu_to_le64(m
->dqb_bhardlimit
);
68 d
->dqb_bsoftlimit
= cpu_to_le64(m
->dqb_bsoftlimit
);
69 d
->dqb_curspace
= cpu_to_le64(m
->dqb_curspace
);
70 d
->dqb_btime
= cpu_to_le64(m
->dqb_btime
);
71 d
->dqb_itime
= cpu_to_le64(m
->dqb_itime
);
72 d
->dqb_pad1
= d
->dqb_pad2
= 0;
75 static int ocfs2_global_is_id(void *dp
, struct dquot
*dquot
)
77 struct ocfs2_global_disk_dqblk
*d
= dp
;
78 struct ocfs2_mem_dqinfo
*oinfo
=
79 sb_dqinfo(dquot
->dq_sb
, dquot
->dq_type
)->dqi_priv
;
81 if (qtree_entry_unused(&oinfo
->dqi_gi
, dp
))
83 return le32_to_cpu(d
->dqb_id
) == dquot
->dq_id
;
86 struct qtree_fmt_operations ocfs2_global_ops
= {
87 .mem2disk_dqblk
= ocfs2_global_mem2diskdqb
,
88 .disk2mem_dqblk
= ocfs2_global_disk2memdqb
,
89 .is_id
= ocfs2_global_is_id
,
92 static int ocfs2_validate_quota_block(struct super_block
*sb
,
93 struct buffer_head
*bh
)
95 struct ocfs2_disk_dqtrailer
*dqt
=
96 ocfs2_block_dqtrailer(sb
->s_blocksize
, bh
->b_data
);
98 mlog(0, "Validating quota block %llu\n",
99 (unsigned long long)bh
->b_blocknr
);
101 BUG_ON(!buffer_uptodate(bh
));
104 * If the ecc fails, we return the error but otherwise
105 * leave the filesystem running. We know any error is
106 * local to this block.
108 return ocfs2_validate_meta_ecc(sb
, bh
->b_data
, &dqt
->dq_check
);
111 int ocfs2_read_quota_block(struct inode
*inode
, u64 v_block
,
112 struct buffer_head
**bh
)
115 struct buffer_head
*tmp
= *bh
;
117 rc
= ocfs2_read_virt_blocks(inode
, v_block
, 1, &tmp
, 0,
118 ocfs2_validate_quota_block
);
122 /* If ocfs2_read_virt_blocks() got us a new bh, pass it up. */
129 static int ocfs2_get_quota_block(struct inode
*inode
, int block
,
130 struct buffer_head
**bh
)
135 down_read(&OCFS2_I(inode
)->ip_alloc_sem
);
136 err
= ocfs2_extent_map_get_blocks(inode
, block
, &pblock
, &pcount
, NULL
);
137 up_read(&OCFS2_I(inode
)->ip_alloc_sem
);
142 *bh
= sb_getblk(inode
->i_sb
, pblock
);
150 /* Read data from global quotafile - avoid pagecache and such because we cannot
151 * afford acquiring the locks... We use quota cluster lock to serialize
152 * operations. Caller is responsible for acquiring it. */
153 ssize_t
ocfs2_quota_read(struct super_block
*sb
, int type
, char *data
,
154 size_t len
, loff_t off
)
156 struct ocfs2_mem_dqinfo
*oinfo
= sb_dqinfo(sb
, type
)->dqi_priv
;
157 struct inode
*gqinode
= oinfo
->dqi_gqinode
;
158 loff_t i_size
= i_size_read(gqinode
);
159 int offset
= off
& (sb
->s_blocksize
- 1);
160 sector_t blk
= off
>> sb
->s_blocksize_bits
;
162 struct buffer_head
*bh
;
163 size_t toread
, tocopy
;
167 if (off
+ len
> i_size
)
171 tocopy
= min_t(size_t, (sb
->s_blocksize
- offset
), toread
);
173 err
= ocfs2_read_quota_block(gqinode
, blk
, &bh
);
178 memcpy(data
, bh
->b_data
+ offset
, tocopy
);
188 /* Write to quotafile (we know the transaction is already started and has
190 ssize_t
ocfs2_quota_write(struct super_block
*sb
, int type
,
191 const char *data
, size_t len
, loff_t off
)
193 struct mem_dqinfo
*info
= sb_dqinfo(sb
, type
);
194 struct ocfs2_mem_dqinfo
*oinfo
= info
->dqi_priv
;
195 struct inode
*gqinode
= oinfo
->dqi_gqinode
;
196 int offset
= off
& (sb
->s_blocksize
- 1);
197 sector_t blk
= off
>> sb
->s_blocksize_bits
;
198 int err
= 0, new = 0, ja_type
;
199 struct buffer_head
*bh
= NULL
;
200 handle_t
*handle
= journal_current_handle();
203 mlog(ML_ERROR
, "Quota write (off=%llu, len=%llu) cancelled "
204 "because transaction was not started.\n",
205 (unsigned long long)off
, (unsigned long long)len
);
208 if (len
> sb
->s_blocksize
- OCFS2_QBLK_RESERVED_SPACE
- offset
) {
210 len
= sb
->s_blocksize
- OCFS2_QBLK_RESERVED_SPACE
- offset
;
213 mutex_lock_nested(&gqinode
->i_mutex
, I_MUTEX_QUOTA
);
214 if (gqinode
->i_size
< off
+ len
) {
216 ocfs2_align_bytes_to_blocks(sb
, off
+ len
);
218 /* Space is already allocated in ocfs2_global_read_dquot() */
219 err
= ocfs2_simple_size_update(gqinode
,
226 /* Not rewriting whole block? */
227 if ((offset
|| len
< sb
->s_blocksize
- OCFS2_QBLK_RESERVED_SPACE
) &&
229 err
= ocfs2_read_quota_block(gqinode
, blk
, &bh
);
230 ja_type
= OCFS2_JOURNAL_ACCESS_WRITE
;
232 err
= ocfs2_get_quota_block(gqinode
, blk
, &bh
);
233 ja_type
= OCFS2_JOURNAL_ACCESS_CREATE
;
241 memset(bh
->b_data
, 0, sb
->s_blocksize
);
242 memcpy(bh
->b_data
+ offset
, data
, len
);
243 flush_dcache_page(bh
->b_page
);
244 set_buffer_uptodate(bh
);
246 ocfs2_set_buffer_uptodate(gqinode
, bh
);
247 err
= ocfs2_journal_access_dq(handle
, gqinode
, bh
, ja_type
);
252 err
= ocfs2_journal_dirty(handle
, bh
);
258 mutex_unlock(&gqinode
->i_mutex
);
262 gqinode
->i_version
++;
263 ocfs2_mark_inode_dirty(handle
, gqinode
, oinfo
->dqi_gqi_bh
);
264 mutex_unlock(&gqinode
->i_mutex
);
268 int ocfs2_lock_global_qf(struct ocfs2_mem_dqinfo
*oinfo
, int ex
)
271 struct buffer_head
*bh
= NULL
;
273 status
= ocfs2_inode_lock(oinfo
->dqi_gqinode
, &bh
, ex
);
276 spin_lock(&dq_data_lock
);
277 if (!oinfo
->dqi_gqi_count
++)
278 oinfo
->dqi_gqi_bh
= bh
;
280 WARN_ON(bh
!= oinfo
->dqi_gqi_bh
);
281 spin_unlock(&dq_data_lock
);
285 void ocfs2_unlock_global_qf(struct ocfs2_mem_dqinfo
*oinfo
, int ex
)
287 ocfs2_inode_unlock(oinfo
->dqi_gqinode
, ex
);
288 brelse(oinfo
->dqi_gqi_bh
);
289 spin_lock(&dq_data_lock
);
290 if (!--oinfo
->dqi_gqi_count
)
291 oinfo
->dqi_gqi_bh
= NULL
;
292 spin_unlock(&dq_data_lock
);
295 /* Read information header from global quota file */
296 int ocfs2_global_read_info(struct super_block
*sb
, int type
)
298 struct inode
*gqinode
= NULL
;
299 unsigned int ino
[MAXQUOTAS
] = { USER_QUOTA_SYSTEM_INODE
,
300 GROUP_QUOTA_SYSTEM_INODE
};
301 struct ocfs2_global_disk_dqinfo dinfo
;
302 struct mem_dqinfo
*info
= sb_dqinfo(sb
, type
);
303 struct ocfs2_mem_dqinfo
*oinfo
= info
->dqi_priv
;
308 /* Read global header */
309 gqinode
= ocfs2_get_system_file_inode(OCFS2_SB(sb
), ino
[type
],
312 mlog(ML_ERROR
, "failed to get global quota inode (type=%d)\n",
317 oinfo
->dqi_gi
.dqi_sb
= sb
;
318 oinfo
->dqi_gi
.dqi_type
= type
;
319 ocfs2_qinfo_lock_res_init(&oinfo
->dqi_gqlock
, oinfo
);
320 oinfo
->dqi_gi
.dqi_entry_size
= sizeof(struct ocfs2_global_disk_dqblk
);
321 oinfo
->dqi_gi
.dqi_ops
= &ocfs2_global_ops
;
322 oinfo
->dqi_gqi_bh
= NULL
;
323 oinfo
->dqi_gqi_count
= 0;
324 oinfo
->dqi_gqinode
= gqinode
;
325 status
= ocfs2_lock_global_qf(oinfo
, 0);
330 status
= sb
->s_op
->quota_read(sb
, type
, (char *)&dinfo
,
331 sizeof(struct ocfs2_global_disk_dqinfo
),
332 OCFS2_GLOBAL_INFO_OFF
);
333 ocfs2_unlock_global_qf(oinfo
, 0);
334 if (status
!= sizeof(struct ocfs2_global_disk_dqinfo
)) {
335 mlog(ML_ERROR
, "Cannot read global quota info (%d).\n",
342 info
->dqi_bgrace
= le32_to_cpu(dinfo
.dqi_bgrace
);
343 info
->dqi_igrace
= le32_to_cpu(dinfo
.dqi_igrace
);
344 oinfo
->dqi_syncms
= le32_to_cpu(dinfo
.dqi_syncms
);
345 oinfo
->dqi_gi
.dqi_blocks
= le32_to_cpu(dinfo
.dqi_blocks
);
346 oinfo
->dqi_gi
.dqi_free_blk
= le32_to_cpu(dinfo
.dqi_free_blk
);
347 oinfo
->dqi_gi
.dqi_free_entry
= le32_to_cpu(dinfo
.dqi_free_entry
);
348 oinfo
->dqi_gi
.dqi_blocksize_bits
= sb
->s_blocksize_bits
;
349 oinfo
->dqi_gi
.dqi_usable_bs
= sb
->s_blocksize
-
350 OCFS2_QBLK_RESERVED_SPACE
;
351 oinfo
->dqi_gi
.dqi_qtree_depth
= qtree_depth(&oinfo
->dqi_gi
);
352 INIT_DELAYED_WORK(&oinfo
->dqi_sync_work
, qsync_work_fn
);
353 queue_delayed_work(ocfs2_quota_wq
, &oinfo
->dqi_sync_work
,
354 msecs_to_jiffies(oinfo
->dqi_syncms
));
361 /* Write information to global quota file. Expects exlusive lock on quota
362 * file inode and quota info */
363 static int __ocfs2_global_write_info(struct super_block
*sb
, int type
)
365 struct mem_dqinfo
*info
= sb_dqinfo(sb
, type
);
366 struct ocfs2_mem_dqinfo
*oinfo
= info
->dqi_priv
;
367 struct ocfs2_global_disk_dqinfo dinfo
;
370 spin_lock(&dq_data_lock
);
371 info
->dqi_flags
&= ~DQF_INFO_DIRTY
;
372 dinfo
.dqi_bgrace
= cpu_to_le32(info
->dqi_bgrace
);
373 dinfo
.dqi_igrace
= cpu_to_le32(info
->dqi_igrace
);
374 spin_unlock(&dq_data_lock
);
375 dinfo
.dqi_syncms
= cpu_to_le32(oinfo
->dqi_syncms
);
376 dinfo
.dqi_blocks
= cpu_to_le32(oinfo
->dqi_gi
.dqi_blocks
);
377 dinfo
.dqi_free_blk
= cpu_to_le32(oinfo
->dqi_gi
.dqi_free_blk
);
378 dinfo
.dqi_free_entry
= cpu_to_le32(oinfo
->dqi_gi
.dqi_free_entry
);
379 size
= sb
->s_op
->quota_write(sb
, type
, (char *)&dinfo
,
380 sizeof(struct ocfs2_global_disk_dqinfo
),
381 OCFS2_GLOBAL_INFO_OFF
);
382 if (size
!= sizeof(struct ocfs2_global_disk_dqinfo
)) {
383 mlog(ML_ERROR
, "Cannot write global quota info structure\n");
391 int ocfs2_global_write_info(struct super_block
*sb
, int type
)
394 struct ocfs2_mem_dqinfo
*info
= sb_dqinfo(sb
, type
)->dqi_priv
;
396 err
= ocfs2_qinfo_lock(info
, 1);
399 err
= __ocfs2_global_write_info(sb
, type
);
400 ocfs2_qinfo_unlock(info
, 1);
404 static int ocfs2_global_qinit_alloc(struct super_block
*sb
, int type
)
406 struct ocfs2_mem_dqinfo
*oinfo
= sb_dqinfo(sb
, type
)->dqi_priv
;
409 * We may need to allocate tree blocks and a leaf block but not the
412 return oinfo
->dqi_gi
.dqi_qtree_depth
;
415 static int ocfs2_calc_global_qinit_credits(struct super_block
*sb
, int type
)
417 /* We modify all the allocated blocks, tree root, and info block */
418 return (ocfs2_global_qinit_alloc(sb
, type
) + 2) *
419 OCFS2_QUOTA_BLOCK_UPDATE_CREDITS
;
422 /* Read in information from global quota file and acquire a reference to it.
423 * dquot_acquire() has already started the transaction and locked quota file */
424 int ocfs2_global_read_dquot(struct dquot
*dquot
)
426 int err
, err2
, ex
= 0;
427 struct super_block
*sb
= dquot
->dq_sb
;
428 int type
= dquot
->dq_type
;
429 struct ocfs2_mem_dqinfo
*info
= sb_dqinfo(sb
, type
)->dqi_priv
;
430 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
431 struct inode
*gqinode
= info
->dqi_gqinode
;
432 int need_alloc
= ocfs2_global_qinit_alloc(sb
, type
);
433 handle_t
*handle
= NULL
;
435 err
= ocfs2_qinfo_lock(info
, 0);
438 err
= qtree_read_dquot(&info
->dqi_gi
, dquot
);
441 OCFS2_DQUOT(dquot
)->dq_use_count
++;
442 OCFS2_DQUOT(dquot
)->dq_origspace
= dquot
->dq_dqb
.dqb_curspace
;
443 OCFS2_DQUOT(dquot
)->dq_originodes
= dquot
->dq_dqb
.dqb_curinodes
;
444 ocfs2_qinfo_unlock(info
, 0);
446 if (!dquot
->dq_off
) { /* No real quota entry? */
449 * Add blocks to quota file before we start a transaction since
450 * locking allocators ranks above a transaction start
452 WARN_ON(journal_current_handle());
453 down_write(&OCFS2_I(gqinode
)->ip_alloc_sem
);
454 err
= ocfs2_extend_no_holes(gqinode
,
455 gqinode
->i_size
+ (need_alloc
<< sb
->s_blocksize_bits
),
457 up_write(&OCFS2_I(gqinode
)->ip_alloc_sem
);
462 handle
= ocfs2_start_trans(osb
,
463 ocfs2_calc_global_qinit_credits(sb
, type
));
464 if (IS_ERR(handle
)) {
465 err
= PTR_ERR(handle
);
468 err
= ocfs2_qinfo_lock(info
, ex
);
471 err
= qtree_write_dquot(&info
->dqi_gi
, dquot
);
472 if (ex
&& info_dirty(sb_dqinfo(dquot
->dq_sb
, dquot
->dq_type
))) {
473 err2
= __ocfs2_global_write_info(dquot
->dq_sb
, dquot
->dq_type
);
479 ocfs2_qinfo_unlock(info
, 1);
481 ocfs2_qinfo_unlock(info
, 0);
484 ocfs2_commit_trans(osb
, handle
);
491 /* Sync local information about quota modifications with global quota file.
492 * Caller must have started the transaction and obtained exclusive lock for
493 * global quota file inode */
494 int __ocfs2_sync_dquot(struct dquot
*dquot
, int freeing
)
497 struct super_block
*sb
= dquot
->dq_sb
;
498 int type
= dquot
->dq_type
;
499 struct ocfs2_mem_dqinfo
*info
= sb_dqinfo(sb
, type
)->dqi_priv
;
500 struct ocfs2_global_disk_dqblk dqblk
;
501 s64 spacechange
, inodechange
;
502 time_t olditime
, oldbtime
;
504 err
= sb
->s_op
->quota_read(sb
, type
, (char *)&dqblk
,
505 sizeof(struct ocfs2_global_disk_dqblk
),
507 if (err
!= sizeof(struct ocfs2_global_disk_dqblk
)) {
509 mlog(ML_ERROR
, "Short read from global quota file "
516 /* Update space and inode usage. Get also other information from
517 * global quota file so that we don't overwrite any changes there.
519 spin_lock(&dq_data_lock
);
520 spacechange
= dquot
->dq_dqb
.dqb_curspace
-
521 OCFS2_DQUOT(dquot
)->dq_origspace
;
522 inodechange
= dquot
->dq_dqb
.dqb_curinodes
-
523 OCFS2_DQUOT(dquot
)->dq_originodes
;
524 olditime
= dquot
->dq_dqb
.dqb_itime
;
525 oldbtime
= dquot
->dq_dqb
.dqb_btime
;
526 ocfs2_global_disk2memdqb(dquot
, &dqblk
);
527 mlog(0, "Syncing global dquot %u space %lld+%lld, inodes %lld+%lld\n",
528 dquot
->dq_id
, dquot
->dq_dqb
.dqb_curspace
, (long long)spacechange
,
529 dquot
->dq_dqb
.dqb_curinodes
, (long long)inodechange
);
530 if (!test_bit(DQ_LASTSET_B
+ QIF_SPACE_B
, &dquot
->dq_flags
))
531 dquot
->dq_dqb
.dqb_curspace
+= spacechange
;
532 if (!test_bit(DQ_LASTSET_B
+ QIF_INODES_B
, &dquot
->dq_flags
))
533 dquot
->dq_dqb
.dqb_curinodes
+= inodechange
;
534 /* Set properly space grace time... */
535 if (dquot
->dq_dqb
.dqb_bsoftlimit
&&
536 dquot
->dq_dqb
.dqb_curspace
> dquot
->dq_dqb
.dqb_bsoftlimit
) {
537 if (!test_bit(DQ_LASTSET_B
+ QIF_BTIME_B
, &dquot
->dq_flags
) &&
539 if (dquot
->dq_dqb
.dqb_btime
> 0)
540 dquot
->dq_dqb
.dqb_btime
=
541 min(dquot
->dq_dqb
.dqb_btime
, oldbtime
);
543 dquot
->dq_dqb
.dqb_btime
= oldbtime
;
546 dquot
->dq_dqb
.dqb_btime
= 0;
547 clear_bit(DQ_BLKS_B
, &dquot
->dq_flags
);
549 /* Set properly inode grace time... */
550 if (dquot
->dq_dqb
.dqb_isoftlimit
&&
551 dquot
->dq_dqb
.dqb_curinodes
> dquot
->dq_dqb
.dqb_isoftlimit
) {
552 if (!test_bit(DQ_LASTSET_B
+ QIF_ITIME_B
, &dquot
->dq_flags
) &&
554 if (dquot
->dq_dqb
.dqb_itime
> 0)
555 dquot
->dq_dqb
.dqb_itime
=
556 min(dquot
->dq_dqb
.dqb_itime
, olditime
);
558 dquot
->dq_dqb
.dqb_itime
= olditime
;
561 dquot
->dq_dqb
.dqb_itime
= 0;
562 clear_bit(DQ_INODES_B
, &dquot
->dq_flags
);
564 /* All information is properly updated, clear the flags */
565 __clear_bit(DQ_LASTSET_B
+ QIF_SPACE_B
, &dquot
->dq_flags
);
566 __clear_bit(DQ_LASTSET_B
+ QIF_INODES_B
, &dquot
->dq_flags
);
567 __clear_bit(DQ_LASTSET_B
+ QIF_BLIMITS_B
, &dquot
->dq_flags
);
568 __clear_bit(DQ_LASTSET_B
+ QIF_ILIMITS_B
, &dquot
->dq_flags
);
569 __clear_bit(DQ_LASTSET_B
+ QIF_BTIME_B
, &dquot
->dq_flags
);
570 __clear_bit(DQ_LASTSET_B
+ QIF_ITIME_B
, &dquot
->dq_flags
);
571 OCFS2_DQUOT(dquot
)->dq_origspace
= dquot
->dq_dqb
.dqb_curspace
;
572 OCFS2_DQUOT(dquot
)->dq_originodes
= dquot
->dq_dqb
.dqb_curinodes
;
573 spin_unlock(&dq_data_lock
);
574 err
= ocfs2_qinfo_lock(info
, freeing
);
576 mlog(ML_ERROR
, "Failed to lock quota info, loosing quota write"
577 " (type=%d, id=%u)\n", dquot
->dq_type
,
578 (unsigned)dquot
->dq_id
);
582 OCFS2_DQUOT(dquot
)->dq_use_count
--;
583 err
= qtree_write_dquot(&info
->dqi_gi
, dquot
);
586 if (freeing
&& !OCFS2_DQUOT(dquot
)->dq_use_count
) {
587 err
= qtree_release_dquot(&info
->dqi_gi
, dquot
);
588 if (info_dirty(sb_dqinfo(sb
, type
))) {
589 err2
= __ocfs2_global_write_info(sb
, type
);
595 ocfs2_qinfo_unlock(info
, freeing
);
603 * Functions for periodic syncing of dquots with global file
605 static int ocfs2_sync_dquot_helper(struct dquot
*dquot
, unsigned long type
)
608 struct super_block
*sb
= dquot
->dq_sb
;
609 struct ocfs2_mem_dqinfo
*oinfo
= sb_dqinfo(sb
, type
)->dqi_priv
;
610 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
613 mlog_entry("id=%u qtype=%u type=%lu device=%s\n", dquot
->dq_id
,
614 dquot
->dq_type
, type
, sb
->s_id
);
615 if (type
!= dquot
->dq_type
)
617 status
= ocfs2_lock_global_qf(oinfo
, 1);
621 handle
= ocfs2_start_trans(osb
, OCFS2_QSYNC_CREDITS
);
622 if (IS_ERR(handle
)) {
623 status
= PTR_ERR(handle
);
627 mutex_lock(&sb_dqopt(sb
)->dqio_mutex
);
628 status
= ocfs2_sync_dquot(dquot
);
629 mutex_unlock(&sb_dqopt(sb
)->dqio_mutex
);
632 /* We have to write local structure as well... */
633 dquot_mark_dquot_dirty(dquot
);
634 status
= dquot_commit(dquot
);
637 ocfs2_commit_trans(osb
, handle
);
639 ocfs2_unlock_global_qf(oinfo
, 1);
645 static void qsync_work_fn(struct work_struct
*work
)
647 struct ocfs2_mem_dqinfo
*oinfo
= container_of(work
,
648 struct ocfs2_mem_dqinfo
,
650 struct super_block
*sb
= oinfo
->dqi_gqinode
->i_sb
;
652 dquot_scan_active(sb
, ocfs2_sync_dquot_helper
, oinfo
->dqi_type
);
653 queue_delayed_work(ocfs2_quota_wq
, &oinfo
->dqi_sync_work
,
654 msecs_to_jiffies(oinfo
->dqi_syncms
));
658 * Wrappers for generic quota functions
661 static int ocfs2_write_dquot(struct dquot
*dquot
)
664 struct ocfs2_super
*osb
= OCFS2_SB(dquot
->dq_sb
);
667 mlog_entry("id=%u, type=%d", dquot
->dq_id
, dquot
->dq_type
);
669 handle
= ocfs2_start_trans(osb
, OCFS2_QWRITE_CREDITS
);
670 if (IS_ERR(handle
)) {
671 status
= PTR_ERR(handle
);
675 status
= dquot_commit(dquot
);
676 ocfs2_commit_trans(osb
, handle
);
682 static int ocfs2_calc_qdel_credits(struct super_block
*sb
, int type
)
684 struct ocfs2_mem_dqinfo
*oinfo
= sb_dqinfo(sb
, type
)->dqi_priv
;
686 * We modify tree, leaf block, global info, local chunk header,
687 * global and local inode; OCFS2_QINFO_WRITE_CREDITS already
688 * accounts for inode update
690 return (oinfo
->dqi_gi
.dqi_qtree_depth
+ 2) *
691 OCFS2_QUOTA_BLOCK_UPDATE_CREDITS
+
692 OCFS2_QINFO_WRITE_CREDITS
+
693 OCFS2_INODE_UPDATE_CREDITS
;
696 static int ocfs2_release_dquot(struct dquot
*dquot
)
699 struct ocfs2_mem_dqinfo
*oinfo
=
700 sb_dqinfo(dquot
->dq_sb
, dquot
->dq_type
)->dqi_priv
;
701 struct ocfs2_super
*osb
= OCFS2_SB(dquot
->dq_sb
);
704 mlog_entry("id=%u, type=%d", dquot
->dq_id
, dquot
->dq_type
);
706 status
= ocfs2_lock_global_qf(oinfo
, 1);
709 handle
= ocfs2_start_trans(osb
,
710 ocfs2_calc_qdel_credits(dquot
->dq_sb
, dquot
->dq_type
));
711 if (IS_ERR(handle
)) {
712 status
= PTR_ERR(handle
);
716 status
= dquot_release(dquot
);
717 ocfs2_commit_trans(osb
, handle
);
719 ocfs2_unlock_global_qf(oinfo
, 1);
725 static int ocfs2_acquire_dquot(struct dquot
*dquot
)
727 struct ocfs2_mem_dqinfo
*oinfo
=
728 sb_dqinfo(dquot
->dq_sb
, dquot
->dq_type
)->dqi_priv
;
731 mlog_entry("id=%u, type=%d", dquot
->dq_id
, dquot
->dq_type
);
732 /* We need an exclusive lock, because we're going to update use count
733 * and instantiate possibly new dquot structure */
734 status
= ocfs2_lock_global_qf(oinfo
, 1);
737 status
= dquot_acquire(dquot
);
738 ocfs2_unlock_global_qf(oinfo
, 1);
744 static int ocfs2_mark_dquot_dirty(struct dquot
*dquot
)
746 unsigned long mask
= (1 << (DQ_LASTSET_B
+ QIF_ILIMITS_B
)) |
747 (1 << (DQ_LASTSET_B
+ QIF_BLIMITS_B
)) |
748 (1 << (DQ_LASTSET_B
+ QIF_INODES_B
)) |
749 (1 << (DQ_LASTSET_B
+ QIF_SPACE_B
)) |
750 (1 << (DQ_LASTSET_B
+ QIF_BTIME_B
)) |
751 (1 << (DQ_LASTSET_B
+ QIF_ITIME_B
));
754 struct super_block
*sb
= dquot
->dq_sb
;
755 int type
= dquot
->dq_type
;
756 struct ocfs2_mem_dqinfo
*oinfo
= sb_dqinfo(sb
, type
)->dqi_priv
;
758 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
760 mlog_entry("id=%u, type=%d", dquot
->dq_id
, type
);
761 dquot_mark_dquot_dirty(dquot
);
763 /* In case user set some limits, sync dquot immediately to global
764 * quota file so that information propagates quicker */
765 spin_lock(&dq_data_lock
);
766 if (dquot
->dq_flags
& mask
)
768 spin_unlock(&dq_data_lock
);
769 /* This is a slight hack but we can't afford getting global quota
770 * lock if we already have a transaction started. */
771 if (!sync
|| journal_current_handle()) {
772 status
= ocfs2_write_dquot(dquot
);
775 status
= ocfs2_lock_global_qf(oinfo
, 1);
778 handle
= ocfs2_start_trans(osb
, OCFS2_QSYNC_CREDITS
);
779 if (IS_ERR(handle
)) {
780 status
= PTR_ERR(handle
);
784 status
= ocfs2_sync_dquot(dquot
);
789 /* Now write updated local dquot structure */
790 status
= dquot_commit(dquot
);
792 ocfs2_commit_trans(osb
, handle
);
794 ocfs2_unlock_global_qf(oinfo
, 1);
800 /* This should happen only after set_dqinfo(). */
801 static int ocfs2_write_info(struct super_block
*sb
, int type
)
805 struct ocfs2_mem_dqinfo
*oinfo
= sb_dqinfo(sb
, type
)->dqi_priv
;
809 status
= ocfs2_lock_global_qf(oinfo
, 1);
812 handle
= ocfs2_start_trans(OCFS2_SB(sb
), OCFS2_QINFO_WRITE_CREDITS
);
813 if (IS_ERR(handle
)) {
814 status
= PTR_ERR(handle
);
818 status
= dquot_commit_info(sb
, type
);
819 ocfs2_commit_trans(OCFS2_SB(sb
), handle
);
821 ocfs2_unlock_global_qf(oinfo
, 1);
827 static struct dquot
*ocfs2_alloc_dquot(struct super_block
*sb
, int type
)
829 struct ocfs2_dquot
*dquot
=
830 kmem_cache_zalloc(ocfs2_dquot_cachep
, GFP_NOFS
);
834 return &dquot
->dq_dquot
;
837 static void ocfs2_destroy_dquot(struct dquot
*dquot
)
839 kmem_cache_free(ocfs2_dquot_cachep
, dquot
);
842 struct dquot_operations ocfs2_quota_operations
= {
843 .initialize
= dquot_initialize
,
845 .alloc_space
= dquot_alloc_space
,
846 .alloc_inode
= dquot_alloc_inode
,
847 .free_space
= dquot_free_space
,
848 .free_inode
= dquot_free_inode
,
849 .transfer
= dquot_transfer
,
850 .write_dquot
= ocfs2_write_dquot
,
851 .acquire_dquot
= ocfs2_acquire_dquot
,
852 .release_dquot
= ocfs2_release_dquot
,
853 .mark_dirty
= ocfs2_mark_dquot_dirty
,
854 .write_info
= ocfs2_write_info
,
855 .alloc_dquot
= ocfs2_alloc_dquot
,
856 .destroy_dquot
= ocfs2_destroy_dquot
,
859 int ocfs2_quota_setup(void)
861 ocfs2_quota_wq
= create_workqueue("o2quot");
867 void ocfs2_quota_shutdown(void)
869 if (ocfs2_quota_wq
) {
870 flush_workqueue(ocfs2_quota_wq
);
871 destroy_workqueue(ocfs2_quota_wq
);
872 ocfs2_quota_wq
= NULL
;