2 * Implementation of operations over global quota file
4 #include <linux/spinlock.h>
6 #include <linux/slab.h>
7 #include <linux/quota.h>
8 #include <linux/quotaops.h>
9 #include <linux/dqblk_qtree.h>
10 #include <linux/jiffies.h>
11 #include <linux/writeback.h>
12 #include <linux/workqueue.h>
14 #define MLOG_MASK_PREFIX ML_QUOTA
15 #include <cluster/masklog.h>
20 #include "blockcheck.h"
30 static struct workqueue_struct
*ocfs2_quota_wq
= NULL
;
32 static void qsync_work_fn(struct work_struct
*work
);
34 static void ocfs2_global_disk2memdqb(struct dquot
*dquot
, void *dp
)
36 struct ocfs2_global_disk_dqblk
*d
= dp
;
37 struct mem_dqblk
*m
= &dquot
->dq_dqb
;
39 /* Update from disk only entries not set by the admin */
40 if (!test_bit(DQ_LASTSET_B
+ QIF_ILIMITS_B
, &dquot
->dq_flags
)) {
41 m
->dqb_ihardlimit
= le64_to_cpu(d
->dqb_ihardlimit
);
42 m
->dqb_isoftlimit
= le64_to_cpu(d
->dqb_isoftlimit
);
44 if (!test_bit(DQ_LASTSET_B
+ QIF_INODES_B
, &dquot
->dq_flags
))
45 m
->dqb_curinodes
= le64_to_cpu(d
->dqb_curinodes
);
46 if (!test_bit(DQ_LASTSET_B
+ QIF_BLIMITS_B
, &dquot
->dq_flags
)) {
47 m
->dqb_bhardlimit
= le64_to_cpu(d
->dqb_bhardlimit
);
48 m
->dqb_bsoftlimit
= le64_to_cpu(d
->dqb_bsoftlimit
);
50 if (!test_bit(DQ_LASTSET_B
+ QIF_SPACE_B
, &dquot
->dq_flags
))
51 m
->dqb_curspace
= le64_to_cpu(d
->dqb_curspace
);
52 if (!test_bit(DQ_LASTSET_B
+ QIF_BTIME_B
, &dquot
->dq_flags
))
53 m
->dqb_btime
= le64_to_cpu(d
->dqb_btime
);
54 if (!test_bit(DQ_LASTSET_B
+ QIF_ITIME_B
, &dquot
->dq_flags
))
55 m
->dqb_itime
= le64_to_cpu(d
->dqb_itime
);
56 OCFS2_DQUOT(dquot
)->dq_use_count
= le32_to_cpu(d
->dqb_use_count
);
59 static void ocfs2_global_mem2diskdqb(void *dp
, struct dquot
*dquot
)
61 struct ocfs2_global_disk_dqblk
*d
= dp
;
62 struct mem_dqblk
*m
= &dquot
->dq_dqb
;
64 d
->dqb_id
= cpu_to_le32(dquot
->dq_id
);
65 d
->dqb_use_count
= cpu_to_le32(OCFS2_DQUOT(dquot
)->dq_use_count
);
66 d
->dqb_ihardlimit
= cpu_to_le64(m
->dqb_ihardlimit
);
67 d
->dqb_isoftlimit
= cpu_to_le64(m
->dqb_isoftlimit
);
68 d
->dqb_curinodes
= cpu_to_le64(m
->dqb_curinodes
);
69 d
->dqb_bhardlimit
= cpu_to_le64(m
->dqb_bhardlimit
);
70 d
->dqb_bsoftlimit
= cpu_to_le64(m
->dqb_bsoftlimit
);
71 d
->dqb_curspace
= cpu_to_le64(m
->dqb_curspace
);
72 d
->dqb_btime
= cpu_to_le64(m
->dqb_btime
);
73 d
->dqb_itime
= cpu_to_le64(m
->dqb_itime
);
74 d
->dqb_pad1
= d
->dqb_pad2
= 0;
77 static int ocfs2_global_is_id(void *dp
, struct dquot
*dquot
)
79 struct ocfs2_global_disk_dqblk
*d
= dp
;
80 struct ocfs2_mem_dqinfo
*oinfo
=
81 sb_dqinfo(dquot
->dq_sb
, dquot
->dq_type
)->dqi_priv
;
83 if (qtree_entry_unused(&oinfo
->dqi_gi
, dp
))
85 return le32_to_cpu(d
->dqb_id
) == dquot
->dq_id
;
88 struct qtree_fmt_operations ocfs2_global_ops
= {
89 .mem2disk_dqblk
= ocfs2_global_mem2diskdqb
,
90 .disk2mem_dqblk
= ocfs2_global_disk2memdqb
,
91 .is_id
= ocfs2_global_is_id
,
94 static int ocfs2_validate_quota_block(struct super_block
*sb
,
95 struct buffer_head
*bh
)
97 struct ocfs2_disk_dqtrailer
*dqt
=
98 ocfs2_block_dqtrailer(sb
->s_blocksize
, bh
->b_data
);
100 mlog(0, "Validating quota block %llu\n",
101 (unsigned long long)bh
->b_blocknr
);
103 BUG_ON(!buffer_uptodate(bh
));
106 * If the ecc fails, we return the error but otherwise
107 * leave the filesystem running. We know any error is
108 * local to this block.
110 return ocfs2_validate_meta_ecc(sb
, bh
->b_data
, &dqt
->dq_check
);
113 int ocfs2_read_quota_block(struct inode
*inode
, u64 v_block
,
114 struct buffer_head
**bh
)
117 struct buffer_head
*tmp
= *bh
;
119 if (i_size_read(inode
) >> inode
->i_sb
->s_blocksize_bits
<= v_block
) {
120 ocfs2_error(inode
->i_sb
,
121 "Quota file %llu is probably corrupted! Requested "
122 "to read block %Lu but file has size only %Lu\n",
123 (unsigned long long)OCFS2_I(inode
)->ip_blkno
,
124 (unsigned long long)v_block
,
125 (unsigned long long)i_size_read(inode
));
128 rc
= ocfs2_read_virt_blocks(inode
, v_block
, 1, &tmp
, 0,
129 ocfs2_validate_quota_block
);
133 /* If ocfs2_read_virt_blocks() got us a new bh, pass it up. */
140 static int ocfs2_get_quota_block(struct inode
*inode
, int block
,
141 struct buffer_head
**bh
)
146 down_read(&OCFS2_I(inode
)->ip_alloc_sem
);
147 err
= ocfs2_extent_map_get_blocks(inode
, block
, &pblock
, &pcount
, NULL
);
148 up_read(&OCFS2_I(inode
)->ip_alloc_sem
);
153 *bh
= sb_getblk(inode
->i_sb
, pblock
);
161 /* Read data from global quotafile - avoid pagecache and such because we cannot
162 * afford acquiring the locks... We use quota cluster lock to serialize
163 * operations. Caller is responsible for acquiring it. */
164 ssize_t
ocfs2_quota_read(struct super_block
*sb
, int type
, char *data
,
165 size_t len
, loff_t off
)
167 struct ocfs2_mem_dqinfo
*oinfo
= sb_dqinfo(sb
, type
)->dqi_priv
;
168 struct inode
*gqinode
= oinfo
->dqi_gqinode
;
169 loff_t i_size
= i_size_read(gqinode
);
170 int offset
= off
& (sb
->s_blocksize
- 1);
171 sector_t blk
= off
>> sb
->s_blocksize_bits
;
173 struct buffer_head
*bh
;
174 size_t toread
, tocopy
;
178 if (off
+ len
> i_size
)
182 tocopy
= min_t(size_t, (sb
->s_blocksize
- offset
), toread
);
184 err
= ocfs2_read_quota_block(gqinode
, blk
, &bh
);
189 memcpy(data
, bh
->b_data
+ offset
, tocopy
);
199 /* Write to quotafile (we know the transaction is already started and has
201 ssize_t
ocfs2_quota_write(struct super_block
*sb
, int type
,
202 const char *data
, size_t len
, loff_t off
)
204 struct mem_dqinfo
*info
= sb_dqinfo(sb
, type
);
205 struct ocfs2_mem_dqinfo
*oinfo
= info
->dqi_priv
;
206 struct inode
*gqinode
= oinfo
->dqi_gqinode
;
207 int offset
= off
& (sb
->s_blocksize
- 1);
208 sector_t blk
= off
>> sb
->s_blocksize_bits
;
209 int err
= 0, new = 0, ja_type
;
210 struct buffer_head
*bh
= NULL
;
211 handle_t
*handle
= journal_current_handle();
214 mlog(ML_ERROR
, "Quota write (off=%llu, len=%llu) cancelled "
215 "because transaction was not started.\n",
216 (unsigned long long)off
, (unsigned long long)len
);
219 if (len
> sb
->s_blocksize
- OCFS2_QBLK_RESERVED_SPACE
- offset
) {
221 len
= sb
->s_blocksize
- OCFS2_QBLK_RESERVED_SPACE
- offset
;
224 mutex_lock_nested(&gqinode
->i_mutex
, I_MUTEX_QUOTA
);
225 if (gqinode
->i_size
< off
+ len
) {
227 ocfs2_align_bytes_to_blocks(sb
, off
+ len
);
229 /* Space is already allocated in ocfs2_global_read_dquot() */
230 err
= ocfs2_simple_size_update(gqinode
,
237 /* Not rewriting whole block? */
238 if ((offset
|| len
< sb
->s_blocksize
- OCFS2_QBLK_RESERVED_SPACE
) &&
240 err
= ocfs2_read_quota_block(gqinode
, blk
, &bh
);
241 ja_type
= OCFS2_JOURNAL_ACCESS_WRITE
;
243 err
= ocfs2_get_quota_block(gqinode
, blk
, &bh
);
244 ja_type
= OCFS2_JOURNAL_ACCESS_CREATE
;
252 memset(bh
->b_data
, 0, sb
->s_blocksize
);
253 memcpy(bh
->b_data
+ offset
, data
, len
);
254 flush_dcache_page(bh
->b_page
);
255 set_buffer_uptodate(bh
);
257 ocfs2_set_buffer_uptodate(INODE_CACHE(gqinode
), bh
);
258 err
= ocfs2_journal_access_dq(handle
, INODE_CACHE(gqinode
), bh
,
264 err
= ocfs2_journal_dirty(handle
, bh
);
270 mutex_unlock(&gqinode
->i_mutex
);
274 gqinode
->i_version
++;
275 ocfs2_mark_inode_dirty(handle
, gqinode
, oinfo
->dqi_gqi_bh
);
276 mutex_unlock(&gqinode
->i_mutex
);
280 int ocfs2_lock_global_qf(struct ocfs2_mem_dqinfo
*oinfo
, int ex
)
283 struct buffer_head
*bh
= NULL
;
285 status
= ocfs2_inode_lock(oinfo
->dqi_gqinode
, &bh
, ex
);
288 spin_lock(&dq_data_lock
);
289 if (!oinfo
->dqi_gqi_count
++)
290 oinfo
->dqi_gqi_bh
= bh
;
292 WARN_ON(bh
!= oinfo
->dqi_gqi_bh
);
293 spin_unlock(&dq_data_lock
);
297 void ocfs2_unlock_global_qf(struct ocfs2_mem_dqinfo
*oinfo
, int ex
)
299 ocfs2_inode_unlock(oinfo
->dqi_gqinode
, ex
);
300 brelse(oinfo
->dqi_gqi_bh
);
301 spin_lock(&dq_data_lock
);
302 if (!--oinfo
->dqi_gqi_count
)
303 oinfo
->dqi_gqi_bh
= NULL
;
304 spin_unlock(&dq_data_lock
);
307 /* Read information header from global quota file */
308 int ocfs2_global_read_info(struct super_block
*sb
, int type
)
310 struct inode
*gqinode
= NULL
;
311 unsigned int ino
[MAXQUOTAS
] = { USER_QUOTA_SYSTEM_INODE
,
312 GROUP_QUOTA_SYSTEM_INODE
};
313 struct ocfs2_global_disk_dqinfo dinfo
;
314 struct mem_dqinfo
*info
= sb_dqinfo(sb
, type
);
315 struct ocfs2_mem_dqinfo
*oinfo
= info
->dqi_priv
;
320 /* Read global header */
321 gqinode
= ocfs2_get_system_file_inode(OCFS2_SB(sb
), ino
[type
],
324 mlog(ML_ERROR
, "failed to get global quota inode (type=%d)\n",
329 oinfo
->dqi_gi
.dqi_sb
= sb
;
330 oinfo
->dqi_gi
.dqi_type
= type
;
331 ocfs2_qinfo_lock_res_init(&oinfo
->dqi_gqlock
, oinfo
);
332 oinfo
->dqi_gi
.dqi_entry_size
= sizeof(struct ocfs2_global_disk_dqblk
);
333 oinfo
->dqi_gi
.dqi_ops
= &ocfs2_global_ops
;
334 oinfo
->dqi_gqi_bh
= NULL
;
335 oinfo
->dqi_gqi_count
= 0;
336 oinfo
->dqi_gqinode
= gqinode
;
337 status
= ocfs2_lock_global_qf(oinfo
, 0);
342 status
= sb
->s_op
->quota_read(sb
, type
, (char *)&dinfo
,
343 sizeof(struct ocfs2_global_disk_dqinfo
),
344 OCFS2_GLOBAL_INFO_OFF
);
345 ocfs2_unlock_global_qf(oinfo
, 0);
346 if (status
!= sizeof(struct ocfs2_global_disk_dqinfo
)) {
347 mlog(ML_ERROR
, "Cannot read global quota info (%d).\n",
354 info
->dqi_bgrace
= le32_to_cpu(dinfo
.dqi_bgrace
);
355 info
->dqi_igrace
= le32_to_cpu(dinfo
.dqi_igrace
);
356 oinfo
->dqi_syncms
= le32_to_cpu(dinfo
.dqi_syncms
);
357 oinfo
->dqi_gi
.dqi_blocks
= le32_to_cpu(dinfo
.dqi_blocks
);
358 oinfo
->dqi_gi
.dqi_free_blk
= le32_to_cpu(dinfo
.dqi_free_blk
);
359 oinfo
->dqi_gi
.dqi_free_entry
= le32_to_cpu(dinfo
.dqi_free_entry
);
360 oinfo
->dqi_gi
.dqi_blocksize_bits
= sb
->s_blocksize_bits
;
361 oinfo
->dqi_gi
.dqi_usable_bs
= sb
->s_blocksize
-
362 OCFS2_QBLK_RESERVED_SPACE
;
363 oinfo
->dqi_gi
.dqi_qtree_depth
= qtree_depth(&oinfo
->dqi_gi
);
364 INIT_DELAYED_WORK(&oinfo
->dqi_sync_work
, qsync_work_fn
);
365 queue_delayed_work(ocfs2_quota_wq
, &oinfo
->dqi_sync_work
,
366 msecs_to_jiffies(oinfo
->dqi_syncms
));
373 /* Write information to global quota file. Expects exlusive lock on quota
374 * file inode and quota info */
375 static int __ocfs2_global_write_info(struct super_block
*sb
, int type
)
377 struct mem_dqinfo
*info
= sb_dqinfo(sb
, type
);
378 struct ocfs2_mem_dqinfo
*oinfo
= info
->dqi_priv
;
379 struct ocfs2_global_disk_dqinfo dinfo
;
382 spin_lock(&dq_data_lock
);
383 info
->dqi_flags
&= ~DQF_INFO_DIRTY
;
384 dinfo
.dqi_bgrace
= cpu_to_le32(info
->dqi_bgrace
);
385 dinfo
.dqi_igrace
= cpu_to_le32(info
->dqi_igrace
);
386 spin_unlock(&dq_data_lock
);
387 dinfo
.dqi_syncms
= cpu_to_le32(oinfo
->dqi_syncms
);
388 dinfo
.dqi_blocks
= cpu_to_le32(oinfo
->dqi_gi
.dqi_blocks
);
389 dinfo
.dqi_free_blk
= cpu_to_le32(oinfo
->dqi_gi
.dqi_free_blk
);
390 dinfo
.dqi_free_entry
= cpu_to_le32(oinfo
->dqi_gi
.dqi_free_entry
);
391 size
= sb
->s_op
->quota_write(sb
, type
, (char *)&dinfo
,
392 sizeof(struct ocfs2_global_disk_dqinfo
),
393 OCFS2_GLOBAL_INFO_OFF
);
394 if (size
!= sizeof(struct ocfs2_global_disk_dqinfo
)) {
395 mlog(ML_ERROR
, "Cannot write global quota info structure\n");
403 int ocfs2_global_write_info(struct super_block
*sb
, int type
)
406 struct ocfs2_mem_dqinfo
*info
= sb_dqinfo(sb
, type
)->dqi_priv
;
408 err
= ocfs2_qinfo_lock(info
, 1);
411 err
= __ocfs2_global_write_info(sb
, type
);
412 ocfs2_qinfo_unlock(info
, 1);
416 static int ocfs2_global_qinit_alloc(struct super_block
*sb
, int type
)
418 struct ocfs2_mem_dqinfo
*oinfo
= sb_dqinfo(sb
, type
)->dqi_priv
;
421 * We may need to allocate tree blocks and a leaf block but not the
424 return oinfo
->dqi_gi
.dqi_qtree_depth
;
427 static int ocfs2_calc_global_qinit_credits(struct super_block
*sb
, int type
)
429 /* We modify all the allocated blocks, tree root, and info block */
430 return (ocfs2_global_qinit_alloc(sb
, type
) + 2) *
431 OCFS2_QUOTA_BLOCK_UPDATE_CREDITS
;
434 /* Read in information from global quota file and acquire a reference to it.
435 * dquot_acquire() has already started the transaction and locked quota file */
436 int ocfs2_global_read_dquot(struct dquot
*dquot
)
438 int err
, err2
, ex
= 0;
439 struct super_block
*sb
= dquot
->dq_sb
;
440 int type
= dquot
->dq_type
;
441 struct ocfs2_mem_dqinfo
*info
= sb_dqinfo(sb
, type
)->dqi_priv
;
442 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
443 struct inode
*gqinode
= info
->dqi_gqinode
;
444 int need_alloc
= ocfs2_global_qinit_alloc(sb
, type
);
445 handle_t
*handle
= NULL
;
447 err
= ocfs2_qinfo_lock(info
, 0);
450 err
= qtree_read_dquot(&info
->dqi_gi
, dquot
);
453 OCFS2_DQUOT(dquot
)->dq_use_count
++;
454 OCFS2_DQUOT(dquot
)->dq_origspace
= dquot
->dq_dqb
.dqb_curspace
;
455 OCFS2_DQUOT(dquot
)->dq_originodes
= dquot
->dq_dqb
.dqb_curinodes
;
456 ocfs2_qinfo_unlock(info
, 0);
458 if (!dquot
->dq_off
) { /* No real quota entry? */
461 * Add blocks to quota file before we start a transaction since
462 * locking allocators ranks above a transaction start
464 WARN_ON(journal_current_handle());
465 down_write(&OCFS2_I(gqinode
)->ip_alloc_sem
);
466 err
= ocfs2_extend_no_holes(gqinode
,
467 gqinode
->i_size
+ (need_alloc
<< sb
->s_blocksize_bits
),
469 up_write(&OCFS2_I(gqinode
)->ip_alloc_sem
);
474 handle
= ocfs2_start_trans(osb
,
475 ocfs2_calc_global_qinit_credits(sb
, type
));
476 if (IS_ERR(handle
)) {
477 err
= PTR_ERR(handle
);
480 err
= ocfs2_qinfo_lock(info
, ex
);
483 err
= qtree_write_dquot(&info
->dqi_gi
, dquot
);
484 if (ex
&& info_dirty(sb_dqinfo(dquot
->dq_sb
, dquot
->dq_type
))) {
485 err2
= __ocfs2_global_write_info(dquot
->dq_sb
, dquot
->dq_type
);
491 ocfs2_qinfo_unlock(info
, 1);
493 ocfs2_qinfo_unlock(info
, 0);
496 ocfs2_commit_trans(osb
, handle
);
503 /* Sync local information about quota modifications with global quota file.
504 * Caller must have started the transaction and obtained exclusive lock for
505 * global quota file inode */
506 int __ocfs2_sync_dquot(struct dquot
*dquot
, int freeing
)
509 struct super_block
*sb
= dquot
->dq_sb
;
510 int type
= dquot
->dq_type
;
511 struct ocfs2_mem_dqinfo
*info
= sb_dqinfo(sb
, type
)->dqi_priv
;
512 struct ocfs2_global_disk_dqblk dqblk
;
513 s64 spacechange
, inodechange
;
514 time_t olditime
, oldbtime
;
516 err
= sb
->s_op
->quota_read(sb
, type
, (char *)&dqblk
,
517 sizeof(struct ocfs2_global_disk_dqblk
),
519 if (err
!= sizeof(struct ocfs2_global_disk_dqblk
)) {
521 mlog(ML_ERROR
, "Short read from global quota file "
528 /* Update space and inode usage. Get also other information from
529 * global quota file so that we don't overwrite any changes there.
531 spin_lock(&dq_data_lock
);
532 spacechange
= dquot
->dq_dqb
.dqb_curspace
-
533 OCFS2_DQUOT(dquot
)->dq_origspace
;
534 inodechange
= dquot
->dq_dqb
.dqb_curinodes
-
535 OCFS2_DQUOT(dquot
)->dq_originodes
;
536 olditime
= dquot
->dq_dqb
.dqb_itime
;
537 oldbtime
= dquot
->dq_dqb
.dqb_btime
;
538 ocfs2_global_disk2memdqb(dquot
, &dqblk
);
539 mlog(0, "Syncing global dquot %u space %lld+%lld, inodes %lld+%lld\n",
540 dquot
->dq_id
, dquot
->dq_dqb
.dqb_curspace
, (long long)spacechange
,
541 dquot
->dq_dqb
.dqb_curinodes
, (long long)inodechange
);
542 if (!test_bit(DQ_LASTSET_B
+ QIF_SPACE_B
, &dquot
->dq_flags
))
543 dquot
->dq_dqb
.dqb_curspace
+= spacechange
;
544 if (!test_bit(DQ_LASTSET_B
+ QIF_INODES_B
, &dquot
->dq_flags
))
545 dquot
->dq_dqb
.dqb_curinodes
+= inodechange
;
546 /* Set properly space grace time... */
547 if (dquot
->dq_dqb
.dqb_bsoftlimit
&&
548 dquot
->dq_dqb
.dqb_curspace
> dquot
->dq_dqb
.dqb_bsoftlimit
) {
549 if (!test_bit(DQ_LASTSET_B
+ QIF_BTIME_B
, &dquot
->dq_flags
) &&
551 if (dquot
->dq_dqb
.dqb_btime
> 0)
552 dquot
->dq_dqb
.dqb_btime
=
553 min(dquot
->dq_dqb
.dqb_btime
, oldbtime
);
555 dquot
->dq_dqb
.dqb_btime
= oldbtime
;
558 dquot
->dq_dqb
.dqb_btime
= 0;
559 clear_bit(DQ_BLKS_B
, &dquot
->dq_flags
);
561 /* Set properly inode grace time... */
562 if (dquot
->dq_dqb
.dqb_isoftlimit
&&
563 dquot
->dq_dqb
.dqb_curinodes
> dquot
->dq_dqb
.dqb_isoftlimit
) {
564 if (!test_bit(DQ_LASTSET_B
+ QIF_ITIME_B
, &dquot
->dq_flags
) &&
566 if (dquot
->dq_dqb
.dqb_itime
> 0)
567 dquot
->dq_dqb
.dqb_itime
=
568 min(dquot
->dq_dqb
.dqb_itime
, olditime
);
570 dquot
->dq_dqb
.dqb_itime
= olditime
;
573 dquot
->dq_dqb
.dqb_itime
= 0;
574 clear_bit(DQ_INODES_B
, &dquot
->dq_flags
);
576 /* All information is properly updated, clear the flags */
577 __clear_bit(DQ_LASTSET_B
+ QIF_SPACE_B
, &dquot
->dq_flags
);
578 __clear_bit(DQ_LASTSET_B
+ QIF_INODES_B
, &dquot
->dq_flags
);
579 __clear_bit(DQ_LASTSET_B
+ QIF_BLIMITS_B
, &dquot
->dq_flags
);
580 __clear_bit(DQ_LASTSET_B
+ QIF_ILIMITS_B
, &dquot
->dq_flags
);
581 __clear_bit(DQ_LASTSET_B
+ QIF_BTIME_B
, &dquot
->dq_flags
);
582 __clear_bit(DQ_LASTSET_B
+ QIF_ITIME_B
, &dquot
->dq_flags
);
583 OCFS2_DQUOT(dquot
)->dq_origspace
= dquot
->dq_dqb
.dqb_curspace
;
584 OCFS2_DQUOT(dquot
)->dq_originodes
= dquot
->dq_dqb
.dqb_curinodes
;
585 spin_unlock(&dq_data_lock
);
586 err
= ocfs2_qinfo_lock(info
, freeing
);
588 mlog(ML_ERROR
, "Failed to lock quota info, loosing quota write"
589 " (type=%d, id=%u)\n", dquot
->dq_type
,
590 (unsigned)dquot
->dq_id
);
594 OCFS2_DQUOT(dquot
)->dq_use_count
--;
595 err
= qtree_write_dquot(&info
->dqi_gi
, dquot
);
598 if (freeing
&& !OCFS2_DQUOT(dquot
)->dq_use_count
) {
599 err
= qtree_release_dquot(&info
->dqi_gi
, dquot
);
600 if (info_dirty(sb_dqinfo(sb
, type
))) {
601 err2
= __ocfs2_global_write_info(sb
, type
);
607 ocfs2_qinfo_unlock(info
, freeing
);
615 * Functions for periodic syncing of dquots with global file
617 static int ocfs2_sync_dquot_helper(struct dquot
*dquot
, unsigned long type
)
620 struct super_block
*sb
= dquot
->dq_sb
;
621 struct ocfs2_mem_dqinfo
*oinfo
= sb_dqinfo(sb
, type
)->dqi_priv
;
622 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
625 mlog_entry("id=%u qtype=%u type=%lu device=%s\n", dquot
->dq_id
,
626 dquot
->dq_type
, type
, sb
->s_id
);
627 if (type
!= dquot
->dq_type
)
629 status
= ocfs2_lock_global_qf(oinfo
, 1);
633 handle
= ocfs2_start_trans(osb
, OCFS2_QSYNC_CREDITS
);
634 if (IS_ERR(handle
)) {
635 status
= PTR_ERR(handle
);
639 mutex_lock(&sb_dqopt(sb
)->dqio_mutex
);
640 status
= ocfs2_sync_dquot(dquot
);
641 mutex_unlock(&sb_dqopt(sb
)->dqio_mutex
);
644 /* We have to write local structure as well... */
645 dquot_mark_dquot_dirty(dquot
);
646 status
= dquot_commit(dquot
);
649 ocfs2_commit_trans(osb
, handle
);
651 ocfs2_unlock_global_qf(oinfo
, 1);
657 static void qsync_work_fn(struct work_struct
*work
)
659 struct ocfs2_mem_dqinfo
*oinfo
= container_of(work
,
660 struct ocfs2_mem_dqinfo
,
662 struct super_block
*sb
= oinfo
->dqi_gqinode
->i_sb
;
664 dquot_scan_active(sb
, ocfs2_sync_dquot_helper
, oinfo
->dqi_type
);
665 queue_delayed_work(ocfs2_quota_wq
, &oinfo
->dqi_sync_work
,
666 msecs_to_jiffies(oinfo
->dqi_syncms
));
670 * Wrappers for generic quota functions
673 static int ocfs2_write_dquot(struct dquot
*dquot
)
676 struct ocfs2_super
*osb
= OCFS2_SB(dquot
->dq_sb
);
679 mlog_entry("id=%u, type=%d", dquot
->dq_id
, dquot
->dq_type
);
681 handle
= ocfs2_start_trans(osb
, OCFS2_QWRITE_CREDITS
);
682 if (IS_ERR(handle
)) {
683 status
= PTR_ERR(handle
);
687 status
= dquot_commit(dquot
);
688 ocfs2_commit_trans(osb
, handle
);
694 static int ocfs2_calc_qdel_credits(struct super_block
*sb
, int type
)
696 struct ocfs2_mem_dqinfo
*oinfo
= sb_dqinfo(sb
, type
)->dqi_priv
;
698 * We modify tree, leaf block, global info, local chunk header,
699 * global and local inode; OCFS2_QINFO_WRITE_CREDITS already
700 * accounts for inode update
702 return (oinfo
->dqi_gi
.dqi_qtree_depth
+ 2) *
703 OCFS2_QUOTA_BLOCK_UPDATE_CREDITS
+
704 OCFS2_QINFO_WRITE_CREDITS
+
705 OCFS2_INODE_UPDATE_CREDITS
;
708 static int ocfs2_release_dquot(struct dquot
*dquot
)
711 struct ocfs2_mem_dqinfo
*oinfo
=
712 sb_dqinfo(dquot
->dq_sb
, dquot
->dq_type
)->dqi_priv
;
713 struct ocfs2_super
*osb
= OCFS2_SB(dquot
->dq_sb
);
716 mlog_entry("id=%u, type=%d", dquot
->dq_id
, dquot
->dq_type
);
718 status
= ocfs2_lock_global_qf(oinfo
, 1);
721 handle
= ocfs2_start_trans(osb
,
722 ocfs2_calc_qdel_credits(dquot
->dq_sb
, dquot
->dq_type
));
723 if (IS_ERR(handle
)) {
724 status
= PTR_ERR(handle
);
728 status
= dquot_release(dquot
);
729 ocfs2_commit_trans(osb
, handle
);
731 ocfs2_unlock_global_qf(oinfo
, 1);
737 static int ocfs2_acquire_dquot(struct dquot
*dquot
)
739 struct ocfs2_mem_dqinfo
*oinfo
=
740 sb_dqinfo(dquot
->dq_sb
, dquot
->dq_type
)->dqi_priv
;
743 mlog_entry("id=%u, type=%d", dquot
->dq_id
, dquot
->dq_type
);
744 /* We need an exclusive lock, because we're going to update use count
745 * and instantiate possibly new dquot structure */
746 status
= ocfs2_lock_global_qf(oinfo
, 1);
749 status
= dquot_acquire(dquot
);
750 ocfs2_unlock_global_qf(oinfo
, 1);
756 static int ocfs2_mark_dquot_dirty(struct dquot
*dquot
)
758 unsigned long mask
= (1 << (DQ_LASTSET_B
+ QIF_ILIMITS_B
)) |
759 (1 << (DQ_LASTSET_B
+ QIF_BLIMITS_B
)) |
760 (1 << (DQ_LASTSET_B
+ QIF_INODES_B
)) |
761 (1 << (DQ_LASTSET_B
+ QIF_SPACE_B
)) |
762 (1 << (DQ_LASTSET_B
+ QIF_BTIME_B
)) |
763 (1 << (DQ_LASTSET_B
+ QIF_ITIME_B
));
766 struct super_block
*sb
= dquot
->dq_sb
;
767 int type
= dquot
->dq_type
;
768 struct ocfs2_mem_dqinfo
*oinfo
= sb_dqinfo(sb
, type
)->dqi_priv
;
770 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
772 mlog_entry("id=%u, type=%d", dquot
->dq_id
, type
);
773 dquot_mark_dquot_dirty(dquot
);
775 /* In case user set some limits, sync dquot immediately to global
776 * quota file so that information propagates quicker */
777 spin_lock(&dq_data_lock
);
778 if (dquot
->dq_flags
& mask
)
780 spin_unlock(&dq_data_lock
);
781 /* This is a slight hack but we can't afford getting global quota
782 * lock if we already have a transaction started. */
783 if (!sync
|| journal_current_handle()) {
784 status
= ocfs2_write_dquot(dquot
);
787 status
= ocfs2_lock_global_qf(oinfo
, 1);
790 handle
= ocfs2_start_trans(osb
, OCFS2_QSYNC_CREDITS
);
791 if (IS_ERR(handle
)) {
792 status
= PTR_ERR(handle
);
796 status
= ocfs2_sync_dquot(dquot
);
801 /* Now write updated local dquot structure */
802 status
= dquot_commit(dquot
);
804 ocfs2_commit_trans(osb
, handle
);
806 ocfs2_unlock_global_qf(oinfo
, 1);
812 /* This should happen only after set_dqinfo(). */
813 static int ocfs2_write_info(struct super_block
*sb
, int type
)
817 struct ocfs2_mem_dqinfo
*oinfo
= sb_dqinfo(sb
, type
)->dqi_priv
;
821 status
= ocfs2_lock_global_qf(oinfo
, 1);
824 handle
= ocfs2_start_trans(OCFS2_SB(sb
), OCFS2_QINFO_WRITE_CREDITS
);
825 if (IS_ERR(handle
)) {
826 status
= PTR_ERR(handle
);
830 status
= dquot_commit_info(sb
, type
);
831 ocfs2_commit_trans(OCFS2_SB(sb
), handle
);
833 ocfs2_unlock_global_qf(oinfo
, 1);
839 static struct dquot
*ocfs2_alloc_dquot(struct super_block
*sb
, int type
)
841 struct ocfs2_dquot
*dquot
=
842 kmem_cache_zalloc(ocfs2_dquot_cachep
, GFP_NOFS
);
846 return &dquot
->dq_dquot
;
849 static void ocfs2_destroy_dquot(struct dquot
*dquot
)
851 kmem_cache_free(ocfs2_dquot_cachep
, dquot
);
854 const struct dquot_operations ocfs2_quota_operations
= {
855 .write_dquot
= ocfs2_write_dquot
,
856 .acquire_dquot
= ocfs2_acquire_dquot
,
857 .release_dquot
= ocfs2_release_dquot
,
858 .mark_dirty
= ocfs2_mark_dquot_dirty
,
859 .write_info
= ocfs2_write_info
,
860 .alloc_dquot
= ocfs2_alloc_dquot
,
861 .destroy_dquot
= ocfs2_destroy_dquot
,
864 int ocfs2_quota_setup(void)
866 ocfs2_quota_wq
= create_workqueue("o2quot");
872 void ocfs2_quota_shutdown(void)
874 if (ocfs2_quota_wq
) {
875 flush_workqueue(ocfs2_quota_wq
);
876 destroy_workqueue(ocfs2_quota_wq
);
877 ocfs2_quota_wq
= NULL
;