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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
9e33d69f JK |
2 | /* |
3 | * Implementation of operations over global quota file | |
4 | */ | |
171bf93c | 5 | #include <linux/spinlock.h> |
9e33d69f | 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/dqblk_qtree.h> | |
171bf93c MF |
11 | #include <linux/jiffies.h> |
12 | #include <linux/writeback.h> | |
13 | #include <linux/workqueue.h> | |
e3a767b6 | 14 | #include <linux/llist.h> |
9e33d69f | 15 | |
9e33d69f JK |
16 | #include <cluster/masklog.h> |
17 | ||
18 | #include "ocfs2_fs.h" | |
19 | #include "ocfs2.h" | |
20 | #include "alloc.h" | |
d6b32bbb | 21 | #include "blockcheck.h" |
9e33d69f JK |
22 | #include "inode.h" |
23 | #include "journal.h" | |
24 | #include "file.h" | |
25 | #include "sysfile.h" | |
26 | #include "dlmglue.h" | |
27 | #include "uptodate.h" | |
ada50827 | 28 | #include "super.h" |
f64dd44e | 29 | #include "buffer_head_io.h" |
9e33d69f | 30 | #include "quota.h" |
1db986a8 | 31 | #include "ocfs2_trace.h" |
9e33d69f | 32 | |
fb8dd8d7 JK |
33 | /* |
34 | * Locking of quotas with OCFS2 is rather complex. Here are rules that | |
35 | * should be obeyed by all the functions: | |
36 | * - any write of quota structure (either to local or global file) is protected | |
bc8230ee | 37 | * by dqio_sem or dquot->dq_lock. |
fb8dd8d7 JK |
38 | * - any modification of global quota file holds inode cluster lock, i_mutex, |
39 | * and ip_alloc_sem of the global quota file (achieved by | |
40 | * ocfs2_lock_global_qf). It also has to hold qinfo_lock. | |
41 | * - an allocation of new blocks for local quota file is protected by | |
42 | * its ip_alloc_sem | |
43 | * | |
44 | * A rough sketch of locking dependencies (lf = local file, gf = global file): | |
45 | * Normal filesystem operation: | |
bc8230ee | 46 | * start_trans -> dqio_sem -> write to lf |
fb8dd8d7 | 47 | * Syncing of local and global file: |
bc8230ee | 48 | * ocfs2_lock_global_qf -> start_trans -> dqio_sem -> qinfo_lock -> |
fb8dd8d7 JK |
49 | * write to gf |
50 | * -> write to lf | |
51 | * Acquire dquot for the first time: | |
52 | * dq_lock -> ocfs2_lock_global_qf -> qinfo_lock -> read from gf | |
53 | * -> alloc space for gf | |
54 | * -> start_trans -> qinfo_lock -> write to gf | |
55 | * -> ip_alloc_sem of lf -> alloc space for lf | |
56 | * -> write to lf | |
57 | * Release last reference to dquot: | |
58 | * dq_lock -> ocfs2_lock_global_qf -> start_trans -> qinfo_lock -> write to gf | |
59 | * -> write to lf | |
60 | * Note that all the above operations also hold the inode cluster lock of lf. | |
61 | * Recovery: | |
62 | * inode cluster lock of recovered lf | |
63 | * -> read bitmaps -> ip_alloc_sem of lf | |
bc8230ee | 64 | * -> ocfs2_lock_global_qf -> start_trans -> dqio_sem -> qinfo_lock -> |
fb8dd8d7 JK |
65 | * write to gf |
66 | */ | |
67 | ||
171bf93c MF |
68 | static void qsync_work_fn(struct work_struct *work); |
69 | ||
9e33d69f JK |
70 | static void ocfs2_global_disk2memdqb(struct dquot *dquot, void *dp) |
71 | { | |
72 | struct ocfs2_global_disk_dqblk *d = dp; | |
73 | struct mem_dqblk *m = &dquot->dq_dqb; | |
74 | ||
75 | /* Update from disk only entries not set by the admin */ | |
76 | if (!test_bit(DQ_LASTSET_B + QIF_ILIMITS_B, &dquot->dq_flags)) { | |
77 | m->dqb_ihardlimit = le64_to_cpu(d->dqb_ihardlimit); | |
78 | m->dqb_isoftlimit = le64_to_cpu(d->dqb_isoftlimit); | |
79 | } | |
80 | if (!test_bit(DQ_LASTSET_B + QIF_INODES_B, &dquot->dq_flags)) | |
81 | m->dqb_curinodes = le64_to_cpu(d->dqb_curinodes); | |
82 | if (!test_bit(DQ_LASTSET_B + QIF_BLIMITS_B, &dquot->dq_flags)) { | |
83 | m->dqb_bhardlimit = le64_to_cpu(d->dqb_bhardlimit); | |
84 | m->dqb_bsoftlimit = le64_to_cpu(d->dqb_bsoftlimit); | |
85 | } | |
86 | if (!test_bit(DQ_LASTSET_B + QIF_SPACE_B, &dquot->dq_flags)) | |
87 | m->dqb_curspace = le64_to_cpu(d->dqb_curspace); | |
88 | if (!test_bit(DQ_LASTSET_B + QIF_BTIME_B, &dquot->dq_flags)) | |
89 | m->dqb_btime = le64_to_cpu(d->dqb_btime); | |
90 | if (!test_bit(DQ_LASTSET_B + QIF_ITIME_B, &dquot->dq_flags)) | |
91 | m->dqb_itime = le64_to_cpu(d->dqb_itime); | |
92 | OCFS2_DQUOT(dquot)->dq_use_count = le32_to_cpu(d->dqb_use_count); | |
93 | } | |
94 | ||
95 | static void ocfs2_global_mem2diskdqb(void *dp, struct dquot *dquot) | |
96 | { | |
97 | struct ocfs2_global_disk_dqblk *d = dp; | |
98 | struct mem_dqblk *m = &dquot->dq_dqb; | |
99 | ||
4c376dca | 100 | d->dqb_id = cpu_to_le32(from_kqid(&init_user_ns, dquot->dq_id)); |
9e33d69f JK |
101 | d->dqb_use_count = cpu_to_le32(OCFS2_DQUOT(dquot)->dq_use_count); |
102 | d->dqb_ihardlimit = cpu_to_le64(m->dqb_ihardlimit); | |
103 | d->dqb_isoftlimit = cpu_to_le64(m->dqb_isoftlimit); | |
104 | d->dqb_curinodes = cpu_to_le64(m->dqb_curinodes); | |
105 | d->dqb_bhardlimit = cpu_to_le64(m->dqb_bhardlimit); | |
106 | d->dqb_bsoftlimit = cpu_to_le64(m->dqb_bsoftlimit); | |
107 | d->dqb_curspace = cpu_to_le64(m->dqb_curspace); | |
108 | d->dqb_btime = cpu_to_le64(m->dqb_btime); | |
109 | d->dqb_itime = cpu_to_le64(m->dqb_itime); | |
7669f54c | 110 | d->dqb_pad1 = d->dqb_pad2 = 0; |
9e33d69f JK |
111 | } |
112 | ||
113 | static int ocfs2_global_is_id(void *dp, struct dquot *dquot) | |
114 | { | |
115 | struct ocfs2_global_disk_dqblk *d = dp; | |
116 | struct ocfs2_mem_dqinfo *oinfo = | |
4c376dca | 117 | sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv; |
9e33d69f JK |
118 | |
119 | if (qtree_entry_unused(&oinfo->dqi_gi, dp)) | |
120 | return 0; | |
4c376dca EB |
121 | |
122 | return qid_eq(make_kqid(&init_user_ns, dquot->dq_id.type, | |
123 | le32_to_cpu(d->dqb_id)), | |
124 | dquot->dq_id); | |
9e33d69f JK |
125 | } |
126 | ||
d1b98c23 | 127 | const struct qtree_fmt_operations ocfs2_global_ops = { |
9e33d69f JK |
128 | .mem2disk_dqblk = ocfs2_global_mem2diskdqb, |
129 | .disk2mem_dqblk = ocfs2_global_disk2memdqb, | |
130 | .is_id = ocfs2_global_is_id, | |
131 | }; | |
132 | ||
fb8dd8d7 | 133 | int ocfs2_validate_quota_block(struct super_block *sb, struct buffer_head *bh) |
684ef278 | 134 | { |
d6b32bbb JB |
135 | struct ocfs2_disk_dqtrailer *dqt = |
136 | ocfs2_block_dqtrailer(sb->s_blocksize, bh->b_data); | |
684ef278 | 137 | |
1db986a8 | 138 | trace_ocfs2_validate_quota_block((unsigned long long)bh->b_blocknr); |
684ef278 | 139 | |
d6b32bbb JB |
140 | BUG_ON(!buffer_uptodate(bh)); |
141 | ||
142 | /* | |
143 | * If the ecc fails, we return the error but otherwise | |
144 | * leave the filesystem running. We know any error is | |
145 | * local to this block. | |
146 | */ | |
147 | return ocfs2_validate_meta_ecc(sb, bh->b_data, &dqt->dq_check); | |
684ef278 JB |
148 | } |
149 | ||
f64dd44e JK |
150 | int ocfs2_read_quota_phys_block(struct inode *inode, u64 p_block, |
151 | struct buffer_head **bhp) | |
152 | { | |
153 | int rc; | |
154 | ||
155 | *bhp = NULL; | |
156 | rc = ocfs2_read_blocks(INODE_CACHE(inode), p_block, 1, bhp, 0, | |
157 | ocfs2_validate_quota_block); | |
158 | if (rc) | |
159 | mlog_errno(rc); | |
160 | return rc; | |
161 | } | |
162 | ||
9e33d69f JK |
163 | /* Read data from global quotafile - avoid pagecache and such because we cannot |
164 | * afford acquiring the locks... We use quota cluster lock to serialize | |
165 | * operations. Caller is responsible for acquiring it. */ | |
166 | ssize_t ocfs2_quota_read(struct super_block *sb, int type, char *data, | |
167 | size_t len, loff_t off) | |
168 | { | |
169 | struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv; | |
170 | struct inode *gqinode = oinfo->dqi_gqinode; | |
171 | loff_t i_size = i_size_read(gqinode); | |
172 | int offset = off & (sb->s_blocksize - 1); | |
173 | sector_t blk = off >> sb->s_blocksize_bits; | |
174 | int err = 0; | |
175 | struct buffer_head *bh; | |
176 | size_t toread, tocopy; | |
fb8dd8d7 | 177 | u64 pblock = 0, pcount = 0; |
9e33d69f JK |
178 | |
179 | if (off > i_size) | |
180 | return 0; | |
181 | if (off + len > i_size) | |
182 | len = i_size - off; | |
183 | toread = len; | |
184 | while (toread > 0) { | |
dad7d975 | 185 | tocopy = min_t(size_t, (sb->s_blocksize - offset), toread); |
fb8dd8d7 JK |
186 | if (!pcount) { |
187 | err = ocfs2_extent_map_get_blocks(gqinode, blk, &pblock, | |
188 | &pcount, NULL); | |
189 | if (err) { | |
190 | mlog_errno(err); | |
191 | return err; | |
192 | } | |
193 | } else { | |
194 | pcount--; | |
195 | pblock++; | |
196 | } | |
85eb8b73 | 197 | bh = NULL; |
fb8dd8d7 | 198 | err = ocfs2_read_quota_phys_block(gqinode, pblock, &bh); |
85eb8b73 | 199 | if (err) { |
9e33d69f JK |
200 | mlog_errno(err); |
201 | return err; | |
202 | } | |
203 | memcpy(data, bh->b_data + offset, tocopy); | |
204 | brelse(bh); | |
205 | offset = 0; | |
206 | toread -= tocopy; | |
207 | data += tocopy; | |
208 | blk++; | |
209 | } | |
210 | return len; | |
211 | } | |
212 | ||
213 | /* Write to quotafile (we know the transaction is already started and has | |
214 | * enough credits) */ | |
215 | ssize_t ocfs2_quota_write(struct super_block *sb, int type, | |
216 | const char *data, size_t len, loff_t off) | |
217 | { | |
218 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
219 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
220 | struct inode *gqinode = oinfo->dqi_gqinode; | |
221 | int offset = off & (sb->s_blocksize - 1); | |
222 | sector_t blk = off >> sb->s_blocksize_bits; | |
af09e51b | 223 | int err = 0, new = 0, ja_type; |
85eb8b73 | 224 | struct buffer_head *bh = NULL; |
9e33d69f | 225 | handle_t *handle = journal_current_handle(); |
fb8dd8d7 | 226 | u64 pblock, pcount; |
9e33d69f JK |
227 | |
228 | if (!handle) { | |
229 | mlog(ML_ERROR, "Quota write (off=%llu, len=%llu) cancelled " | |
230 | "because transaction was not started.\n", | |
231 | (unsigned long long)off, (unsigned long long)len); | |
232 | return -EIO; | |
233 | } | |
234 | if (len > sb->s_blocksize - OCFS2_QBLK_RESERVED_SPACE - offset) { | |
235 | WARN_ON(1); | |
236 | len = sb->s_blocksize - OCFS2_QBLK_RESERVED_SPACE - offset; | |
237 | } | |
238 | ||
f17c20dd | 239 | if (i_size_read(gqinode) < off + len) { |
b57ac2c4 JK |
240 | loff_t rounded_end = |
241 | ocfs2_align_bytes_to_blocks(sb, off + len); | |
242 | ||
fb8dd8d7 | 243 | /* Space is already allocated in ocfs2_acquire_dquot() */ |
9e33d69f JK |
244 | err = ocfs2_simple_size_update(gqinode, |
245 | oinfo->dqi_gqi_bh, | |
b57ac2c4 | 246 | rounded_end); |
9e33d69f JK |
247 | if (err < 0) |
248 | goto out; | |
249 | new = 1; | |
250 | } | |
fb8dd8d7 JK |
251 | err = ocfs2_extent_map_get_blocks(gqinode, blk, &pblock, &pcount, NULL); |
252 | if (err) { | |
253 | mlog_errno(err); | |
254 | goto out; | |
255 | } | |
9e33d69f JK |
256 | /* Not rewriting whole block? */ |
257 | if ((offset || len < sb->s_blocksize - OCFS2_QBLK_RESERVED_SPACE) && | |
258 | !new) { | |
fb8dd8d7 | 259 | err = ocfs2_read_quota_phys_block(gqinode, pblock, &bh); |
af09e51b | 260 | ja_type = OCFS2_JOURNAL_ACCESS_WRITE; |
9e33d69f | 261 | } else { |
fb8dd8d7 JK |
262 | bh = sb_getblk(sb, pblock); |
263 | if (!bh) | |
264 | err = -ENOMEM; | |
af09e51b | 265 | ja_type = OCFS2_JOURNAL_ACCESS_CREATE; |
9e33d69f | 266 | } |
af09e51b JK |
267 | if (err) { |
268 | mlog_errno(err); | |
e9956fae | 269 | goto out; |
9e33d69f JK |
270 | } |
271 | lock_buffer(bh); | |
272 | if (new) | |
273 | memset(bh->b_data, 0, sb->s_blocksize); | |
274 | memcpy(bh->b_data + offset, data, len); | |
275 | flush_dcache_page(bh->b_page); | |
af09e51b | 276 | set_buffer_uptodate(bh); |
9e33d69f | 277 | unlock_buffer(bh); |
8cb471e8 | 278 | ocfs2_set_buffer_uptodate(INODE_CACHE(gqinode), bh); |
0cf2f763 JB |
279 | err = ocfs2_journal_access_dq(handle, INODE_CACHE(gqinode), bh, |
280 | ja_type); | |
af09e51b JK |
281 | if (err < 0) { |
282 | brelse(bh); | |
283 | goto out; | |
284 | } | |
ec20cec7 | 285 | ocfs2_journal_dirty(handle, bh); |
9e33d69f | 286 | brelse(bh); |
9e33d69f JK |
287 | out: |
288 | if (err) { | |
9e33d69f JK |
289 | mlog_errno(err); |
290 | return err; | |
291 | } | |
292 | gqinode->i_version++; | |
293 | ocfs2_mark_inode_dirty(handle, gqinode, oinfo->dqi_gqi_bh); | |
9e33d69f JK |
294 | return len; |
295 | } | |
296 | ||
297 | int ocfs2_lock_global_qf(struct ocfs2_mem_dqinfo *oinfo, int ex) | |
298 | { | |
299 | int status; | |
300 | struct buffer_head *bh = NULL; | |
301 | ||
302 | status = ocfs2_inode_lock(oinfo->dqi_gqinode, &bh, ex); | |
303 | if (status < 0) | |
304 | return status; | |
305 | spin_lock(&dq_data_lock); | |
306 | if (!oinfo->dqi_gqi_count++) | |
307 | oinfo->dqi_gqi_bh = bh; | |
308 | else | |
309 | WARN_ON(bh != oinfo->dqi_gqi_bh); | |
310 | spin_unlock(&dq_data_lock); | |
fb8dd8d7 | 311 | if (ex) { |
5955102c | 312 | inode_lock(oinfo->dqi_gqinode); |
fb8dd8d7 JK |
313 | down_write(&OCFS2_I(oinfo->dqi_gqinode)->ip_alloc_sem); |
314 | } else { | |
315 | down_read(&OCFS2_I(oinfo->dqi_gqinode)->ip_alloc_sem); | |
316 | } | |
9e33d69f JK |
317 | return 0; |
318 | } | |
319 | ||
320 | void ocfs2_unlock_global_qf(struct ocfs2_mem_dqinfo *oinfo, int ex) | |
321 | { | |
fb8dd8d7 JK |
322 | if (ex) { |
323 | up_write(&OCFS2_I(oinfo->dqi_gqinode)->ip_alloc_sem); | |
5955102c | 324 | inode_unlock(oinfo->dqi_gqinode); |
fb8dd8d7 JK |
325 | } else { |
326 | up_read(&OCFS2_I(oinfo->dqi_gqinode)->ip_alloc_sem); | |
327 | } | |
9e33d69f JK |
328 | ocfs2_inode_unlock(oinfo->dqi_gqinode, ex); |
329 | brelse(oinfo->dqi_gqi_bh); | |
330 | spin_lock(&dq_data_lock); | |
331 | if (!--oinfo->dqi_gqi_count) | |
332 | oinfo->dqi_gqi_bh = NULL; | |
333 | spin_unlock(&dq_data_lock); | |
334 | } | |
335 | ||
336 | /* Read information header from global quota file */ | |
337 | int ocfs2_global_read_info(struct super_block *sb, int type) | |
338 | { | |
339 | struct inode *gqinode = NULL; | |
52362810 JK |
340 | unsigned int ino[OCFS2_MAXQUOTAS] = { USER_QUOTA_SYSTEM_INODE, |
341 | GROUP_QUOTA_SYSTEM_INODE }; | |
9e33d69f JK |
342 | struct ocfs2_global_disk_dqinfo dinfo; |
343 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
344 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
ae4f6ef1 | 345 | u64 pcount; |
9e33d69f JK |
346 | int status; |
347 | ||
9e33d69f JK |
348 | /* Read global header */ |
349 | gqinode = ocfs2_get_system_file_inode(OCFS2_SB(sb), ino[type], | |
350 | OCFS2_INVALID_SLOT); | |
351 | if (!gqinode) { | |
352 | mlog(ML_ERROR, "failed to get global quota inode (type=%d)\n", | |
353 | type); | |
354 | status = -EINVAL; | |
355 | goto out_err; | |
356 | } | |
357 | oinfo->dqi_gi.dqi_sb = sb; | |
358 | oinfo->dqi_gi.dqi_type = type; | |
359 | ocfs2_qinfo_lock_res_init(&oinfo->dqi_gqlock, oinfo); | |
360 | oinfo->dqi_gi.dqi_entry_size = sizeof(struct ocfs2_global_disk_dqblk); | |
361 | oinfo->dqi_gi.dqi_ops = &ocfs2_global_ops; | |
362 | oinfo->dqi_gqi_bh = NULL; | |
363 | oinfo->dqi_gqi_count = 0; | |
364 | oinfo->dqi_gqinode = gqinode; | |
365 | status = ocfs2_lock_global_qf(oinfo, 0); | |
366 | if (status < 0) { | |
367 | mlog_errno(status); | |
368 | goto out_err; | |
369 | } | |
ae4f6ef1 JK |
370 | |
371 | status = ocfs2_extent_map_get_blocks(gqinode, 0, &oinfo->dqi_giblk, | |
372 | &pcount, NULL); | |
373 | if (status < 0) | |
374 | goto out_unlock; | |
375 | ||
376 | status = ocfs2_qinfo_lock(oinfo, 0); | |
377 | if (status < 0) | |
378 | goto out_unlock; | |
9e33d69f JK |
379 | status = sb->s_op->quota_read(sb, type, (char *)&dinfo, |
380 | sizeof(struct ocfs2_global_disk_dqinfo), | |
381 | OCFS2_GLOBAL_INFO_OFF); | |
ae4f6ef1 | 382 | ocfs2_qinfo_unlock(oinfo, 0); |
9e33d69f JK |
383 | ocfs2_unlock_global_qf(oinfo, 0); |
384 | if (status != sizeof(struct ocfs2_global_disk_dqinfo)) { | |
385 | mlog(ML_ERROR, "Cannot read global quota info (%d).\n", | |
386 | status); | |
387 | if (status >= 0) | |
388 | status = -EIO; | |
389 | mlog_errno(status); | |
390 | goto out_err; | |
391 | } | |
392 | info->dqi_bgrace = le32_to_cpu(dinfo.dqi_bgrace); | |
393 | info->dqi_igrace = le32_to_cpu(dinfo.dqi_igrace); | |
394 | oinfo->dqi_syncms = le32_to_cpu(dinfo.dqi_syncms); | |
395 | oinfo->dqi_gi.dqi_blocks = le32_to_cpu(dinfo.dqi_blocks); | |
396 | oinfo->dqi_gi.dqi_free_blk = le32_to_cpu(dinfo.dqi_free_blk); | |
397 | oinfo->dqi_gi.dqi_free_entry = le32_to_cpu(dinfo.dqi_free_entry); | |
398 | oinfo->dqi_gi.dqi_blocksize_bits = sb->s_blocksize_bits; | |
399 | oinfo->dqi_gi.dqi_usable_bs = sb->s_blocksize - | |
400 | OCFS2_QBLK_RESERVED_SPACE; | |
401 | oinfo->dqi_gi.dqi_qtree_depth = qtree_depth(&oinfo->dqi_gi); | |
171bf93c | 402 | INIT_DELAYED_WORK(&oinfo->dqi_sync_work, qsync_work_fn); |
316873c9 TH |
403 | schedule_delayed_work(&oinfo->dqi_sync_work, |
404 | msecs_to_jiffies(oinfo->dqi_syncms)); | |
171bf93c | 405 | |
9e33d69f | 406 | out_err: |
9e33d69f | 407 | return status; |
ae4f6ef1 JK |
408 | out_unlock: |
409 | ocfs2_unlock_global_qf(oinfo, 0); | |
410 | mlog_errno(status); | |
411 | goto out_err; | |
9e33d69f JK |
412 | } |
413 | ||
414 | /* Write information to global quota file. Expects exlusive lock on quota | |
415 | * file inode and quota info */ | |
416 | static int __ocfs2_global_write_info(struct super_block *sb, int type) | |
417 | { | |
418 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
419 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
420 | struct ocfs2_global_disk_dqinfo dinfo; | |
421 | ssize_t size; | |
422 | ||
423 | spin_lock(&dq_data_lock); | |
424 | info->dqi_flags &= ~DQF_INFO_DIRTY; | |
425 | dinfo.dqi_bgrace = cpu_to_le32(info->dqi_bgrace); | |
426 | dinfo.dqi_igrace = cpu_to_le32(info->dqi_igrace); | |
427 | spin_unlock(&dq_data_lock); | |
428 | dinfo.dqi_syncms = cpu_to_le32(oinfo->dqi_syncms); | |
429 | dinfo.dqi_blocks = cpu_to_le32(oinfo->dqi_gi.dqi_blocks); | |
430 | dinfo.dqi_free_blk = cpu_to_le32(oinfo->dqi_gi.dqi_free_blk); | |
431 | dinfo.dqi_free_entry = cpu_to_le32(oinfo->dqi_gi.dqi_free_entry); | |
432 | size = sb->s_op->quota_write(sb, type, (char *)&dinfo, | |
433 | sizeof(struct ocfs2_global_disk_dqinfo), | |
434 | OCFS2_GLOBAL_INFO_OFF); | |
435 | if (size != sizeof(struct ocfs2_global_disk_dqinfo)) { | |
436 | mlog(ML_ERROR, "Cannot write global quota info structure\n"); | |
437 | if (size >= 0) | |
438 | size = -EIO; | |
439 | return size; | |
440 | } | |
441 | return 0; | |
442 | } | |
443 | ||
444 | int ocfs2_global_write_info(struct super_block *sb, int type) | |
445 | { | |
446 | int err; | |
9a8ae30e JK |
447 | struct quota_info *dqopt = sb_dqopt(sb); |
448 | struct ocfs2_mem_dqinfo *info = dqopt->info[type].dqi_priv; | |
9e33d69f | 449 | |
9a8ae30e | 450 | down_write(&dqopt->dqio_sem); |
9e33d69f JK |
451 | err = ocfs2_qinfo_lock(info, 1); |
452 | if (err < 0) | |
9a8ae30e | 453 | goto out_sem; |
9e33d69f JK |
454 | err = __ocfs2_global_write_info(sb, type); |
455 | ocfs2_qinfo_unlock(info, 1); | |
9a8ae30e JK |
456 | out_sem: |
457 | up_write(&dqopt->dqio_sem); | |
9e33d69f JK |
458 | return err; |
459 | } | |
460 | ||
b409d7a0 JK |
461 | static int ocfs2_global_qinit_alloc(struct super_block *sb, int type) |
462 | { | |
463 | struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv; | |
464 | ||
465 | /* | |
466 | * We may need to allocate tree blocks and a leaf block but not the | |
467 | * root block | |
468 | */ | |
469 | return oinfo->dqi_gi.dqi_qtree_depth; | |
470 | } | |
471 | ||
472 | static int ocfs2_calc_global_qinit_credits(struct super_block *sb, int type) | |
473 | { | |
832d09cf JK |
474 | /* We modify all the allocated blocks, tree root, info block and |
475 | * the inode */ | |
b409d7a0 | 476 | return (ocfs2_global_qinit_alloc(sb, type) + 2) * |
832d09cf | 477 | OCFS2_QUOTA_BLOCK_UPDATE_CREDITS + 1; |
b409d7a0 JK |
478 | } |
479 | ||
9e33d69f JK |
480 | /* Sync local information about quota modifications with global quota file. |
481 | * Caller must have started the transaction and obtained exclusive lock for | |
482 | * global quota file inode */ | |
483 | int __ocfs2_sync_dquot(struct dquot *dquot, int freeing) | |
484 | { | |
485 | int err, err2; | |
486 | struct super_block *sb = dquot->dq_sb; | |
4c376dca | 487 | int type = dquot->dq_id.type; |
9e33d69f JK |
488 | struct ocfs2_mem_dqinfo *info = sb_dqinfo(sb, type)->dqi_priv; |
489 | struct ocfs2_global_disk_dqblk dqblk; | |
490 | s64 spacechange, inodechange; | |
e008bb61 | 491 | time64_t olditime, oldbtime; |
9e33d69f JK |
492 | |
493 | err = sb->s_op->quota_read(sb, type, (char *)&dqblk, | |
494 | sizeof(struct ocfs2_global_disk_dqblk), | |
495 | dquot->dq_off); | |
496 | if (err != sizeof(struct ocfs2_global_disk_dqblk)) { | |
497 | if (err >= 0) { | |
498 | mlog(ML_ERROR, "Short read from global quota file " | |
499 | "(%u read)\n", err); | |
500 | err = -EIO; | |
501 | } | |
502 | goto out; | |
503 | } | |
504 | ||
505 | /* Update space and inode usage. Get also other information from | |
506 | * global quota file so that we don't overwrite any changes there. | |
507 | * We are */ | |
7b9ca4c6 | 508 | spin_lock(&dquot->dq_dqb_lock); |
9e33d69f JK |
509 | spacechange = dquot->dq_dqb.dqb_curspace - |
510 | OCFS2_DQUOT(dquot)->dq_origspace; | |
511 | inodechange = dquot->dq_dqb.dqb_curinodes - | |
512 | OCFS2_DQUOT(dquot)->dq_originodes; | |
513 | olditime = dquot->dq_dqb.dqb_itime; | |
514 | oldbtime = dquot->dq_dqb.dqb_btime; | |
515 | ocfs2_global_disk2memdqb(dquot, &dqblk); | |
4c376dca EB |
516 | trace_ocfs2_sync_dquot(from_kqid(&init_user_ns, dquot->dq_id), |
517 | dquot->dq_dqb.dqb_curspace, | |
1db986a8 TM |
518 | (long long)spacechange, |
519 | dquot->dq_dqb.dqb_curinodes, | |
520 | (long long)inodechange); | |
9e33d69f JK |
521 | if (!test_bit(DQ_LASTSET_B + QIF_SPACE_B, &dquot->dq_flags)) |
522 | dquot->dq_dqb.dqb_curspace += spacechange; | |
523 | if (!test_bit(DQ_LASTSET_B + QIF_INODES_B, &dquot->dq_flags)) | |
524 | dquot->dq_dqb.dqb_curinodes += inodechange; | |
525 | /* Set properly space grace time... */ | |
526 | if (dquot->dq_dqb.dqb_bsoftlimit && | |
527 | dquot->dq_dqb.dqb_curspace > dquot->dq_dqb.dqb_bsoftlimit) { | |
528 | if (!test_bit(DQ_LASTSET_B + QIF_BTIME_B, &dquot->dq_flags) && | |
529 | oldbtime > 0) { | |
530 | if (dquot->dq_dqb.dqb_btime > 0) | |
531 | dquot->dq_dqb.dqb_btime = | |
532 | min(dquot->dq_dqb.dqb_btime, oldbtime); | |
533 | else | |
534 | dquot->dq_dqb.dqb_btime = oldbtime; | |
535 | } | |
536 | } else { | |
537 | dquot->dq_dqb.dqb_btime = 0; | |
538 | clear_bit(DQ_BLKS_B, &dquot->dq_flags); | |
539 | } | |
540 | /* Set properly inode grace time... */ | |
541 | if (dquot->dq_dqb.dqb_isoftlimit && | |
542 | dquot->dq_dqb.dqb_curinodes > dquot->dq_dqb.dqb_isoftlimit) { | |
543 | if (!test_bit(DQ_LASTSET_B + QIF_ITIME_B, &dquot->dq_flags) && | |
544 | olditime > 0) { | |
545 | if (dquot->dq_dqb.dqb_itime > 0) | |
546 | dquot->dq_dqb.dqb_itime = | |
547 | min(dquot->dq_dqb.dqb_itime, olditime); | |
548 | else | |
549 | dquot->dq_dqb.dqb_itime = olditime; | |
550 | } | |
551 | } else { | |
552 | dquot->dq_dqb.dqb_itime = 0; | |
553 | clear_bit(DQ_INODES_B, &dquot->dq_flags); | |
554 | } | |
555 | /* All information is properly updated, clear the flags */ | |
556 | __clear_bit(DQ_LASTSET_B + QIF_SPACE_B, &dquot->dq_flags); | |
557 | __clear_bit(DQ_LASTSET_B + QIF_INODES_B, &dquot->dq_flags); | |
558 | __clear_bit(DQ_LASTSET_B + QIF_BLIMITS_B, &dquot->dq_flags); | |
559 | __clear_bit(DQ_LASTSET_B + QIF_ILIMITS_B, &dquot->dq_flags); | |
560 | __clear_bit(DQ_LASTSET_B + QIF_BTIME_B, &dquot->dq_flags); | |
561 | __clear_bit(DQ_LASTSET_B + QIF_ITIME_B, &dquot->dq_flags); | |
562 | OCFS2_DQUOT(dquot)->dq_origspace = dquot->dq_dqb.dqb_curspace; | |
563 | OCFS2_DQUOT(dquot)->dq_originodes = dquot->dq_dqb.dqb_curinodes; | |
7b9ca4c6 | 564 | spin_unlock(&dquot->dq_dqb_lock); |
9e33d69f JK |
565 | err = ocfs2_qinfo_lock(info, freeing); |
566 | if (err < 0) { | |
25985edc | 567 | mlog(ML_ERROR, "Failed to lock quota info, losing quota write" |
4c376dca EB |
568 | " (type=%d, id=%u)\n", dquot->dq_id.type, |
569 | (unsigned)from_kqid(&init_user_ns, dquot->dq_id)); | |
9e33d69f JK |
570 | goto out; |
571 | } | |
572 | if (freeing) | |
573 | OCFS2_DQUOT(dquot)->dq_use_count--; | |
574 | err = qtree_write_dquot(&info->dqi_gi, dquot); | |
575 | if (err < 0) | |
576 | goto out_qlock; | |
577 | if (freeing && !OCFS2_DQUOT(dquot)->dq_use_count) { | |
578 | err = qtree_release_dquot(&info->dqi_gi, dquot); | |
579 | if (info_dirty(sb_dqinfo(sb, type))) { | |
580 | err2 = __ocfs2_global_write_info(sb, type); | |
581 | if (!err) | |
582 | err = err2; | |
583 | } | |
584 | } | |
585 | out_qlock: | |
586 | ocfs2_qinfo_unlock(info, freeing); | |
587 | out: | |
588 | if (err < 0) | |
589 | mlog_errno(err); | |
590 | return err; | |
591 | } | |
592 | ||
171bf93c MF |
593 | /* |
594 | * Functions for periodic syncing of dquots with global file | |
595 | */ | |
596 | static int ocfs2_sync_dquot_helper(struct dquot *dquot, unsigned long type) | |
597 | { | |
598 | handle_t *handle; | |
599 | struct super_block *sb = dquot->dq_sb; | |
600 | struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv; | |
601 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
602 | int status = 0; | |
603 | ||
4c376dca EB |
604 | trace_ocfs2_sync_dquot_helper(from_kqid(&init_user_ns, dquot->dq_id), |
605 | dquot->dq_id.type, | |
1db986a8 | 606 | type, sb->s_id); |
4c376dca | 607 | if (type != dquot->dq_id.type) |
171bf93c MF |
608 | goto out; |
609 | status = ocfs2_lock_global_qf(oinfo, 1); | |
610 | if (status < 0) | |
611 | goto out; | |
612 | ||
613 | handle = ocfs2_start_trans(osb, OCFS2_QSYNC_CREDITS); | |
614 | if (IS_ERR(handle)) { | |
615 | status = PTR_ERR(handle); | |
616 | mlog_errno(status); | |
617 | goto out_ilock; | |
618 | } | |
bc8230ee | 619 | down_write(&sb_dqopt(sb)->dqio_sem); |
171bf93c | 620 | status = ocfs2_sync_dquot(dquot); |
171bf93c MF |
621 | if (status < 0) |
622 | mlog_errno(status); | |
623 | /* We have to write local structure as well... */ | |
741e1289 | 624 | status = ocfs2_local_write_dquot(dquot); |
171bf93c MF |
625 | if (status < 0) |
626 | mlog_errno(status); | |
bc8230ee | 627 | up_write(&sb_dqopt(sb)->dqio_sem); |
171bf93c MF |
628 | ocfs2_commit_trans(osb, handle); |
629 | out_ilock: | |
630 | ocfs2_unlock_global_qf(oinfo, 1); | |
631 | out: | |
171bf93c MF |
632 | return status; |
633 | } | |
634 | ||
635 | static void qsync_work_fn(struct work_struct *work) | |
636 | { | |
637 | struct ocfs2_mem_dqinfo *oinfo = container_of(work, | |
638 | struct ocfs2_mem_dqinfo, | |
639 | dqi_sync_work.work); | |
640 | struct super_block *sb = oinfo->dqi_gqinode->i_sb; | |
641 | ||
2a64f80e JK |
642 | /* |
643 | * We have to be careful here not to deadlock on s_umount as umount | |
644 | * disabling quotas may be in progress and it waits for this work to | |
645 | * complete. If trylock fails, we'll do the sync next time... | |
646 | */ | |
647 | if (down_read_trylock(&sb->s_umount)) { | |
648 | dquot_scan_active(sb, ocfs2_sync_dquot_helper, oinfo->dqi_type); | |
649 | up_read(&sb->s_umount); | |
650 | } | |
316873c9 TH |
651 | schedule_delayed_work(&oinfo->dqi_sync_work, |
652 | msecs_to_jiffies(oinfo->dqi_syncms)); | |
171bf93c MF |
653 | } |
654 | ||
9e33d69f JK |
655 | /* |
656 | * Wrappers for generic quota functions | |
657 | */ | |
658 | ||
659 | static int ocfs2_write_dquot(struct dquot *dquot) | |
660 | { | |
661 | handle_t *handle; | |
662 | struct ocfs2_super *osb = OCFS2_SB(dquot->dq_sb); | |
663 | int status = 0; | |
664 | ||
4c376dca EB |
665 | trace_ocfs2_write_dquot(from_kqid(&init_user_ns, dquot->dq_id), |
666 | dquot->dq_id.type); | |
9e33d69f JK |
667 | |
668 | handle = ocfs2_start_trans(osb, OCFS2_QWRITE_CREDITS); | |
669 | if (IS_ERR(handle)) { | |
670 | status = PTR_ERR(handle); | |
671 | mlog_errno(status); | |
672 | goto out; | |
673 | } | |
bc8230ee | 674 | down_write(&sb_dqopt(dquot->dq_sb)->dqio_sem); |
741e1289 | 675 | status = ocfs2_local_write_dquot(dquot); |
bc8230ee | 676 | up_write(&sb_dqopt(dquot->dq_sb)->dqio_sem); |
9e33d69f JK |
677 | ocfs2_commit_trans(osb, handle); |
678 | out: | |
9e33d69f JK |
679 | return status; |
680 | } | |
681 | ||
b409d7a0 | 682 | static int ocfs2_calc_qdel_credits(struct super_block *sb, int type) |
9e33d69f | 683 | { |
b409d7a0 | 684 | struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv; |
0584974a JK |
685 | /* |
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 | |
689 | */ | |
b409d7a0 JK |
690 | return (oinfo->dqi_gi.dqi_qtree_depth + 2) * |
691 | OCFS2_QUOTA_BLOCK_UPDATE_CREDITS + | |
0584974a | 692 | OCFS2_QINFO_WRITE_CREDITS + |
0584974a | 693 | OCFS2_INODE_UPDATE_CREDITS; |
9e33d69f JK |
694 | } |
695 | ||
e3a767b6 JK |
696 | void ocfs2_drop_dquot_refs(struct work_struct *work) |
697 | { | |
698 | struct ocfs2_super *osb = container_of(work, struct ocfs2_super, | |
699 | dquot_drop_work); | |
700 | struct llist_node *list; | |
701 | struct ocfs2_dquot *odquot, *next_odquot; | |
702 | ||
703 | list = llist_del_all(&osb->dquot_drop_list); | |
704 | llist_for_each_entry_safe(odquot, next_odquot, list, list) { | |
705 | /* Drop the reference we acquired in ocfs2_dquot_release() */ | |
706 | dqput(&odquot->dq_dquot); | |
707 | } | |
708 | } | |
709 | ||
710 | /* | |
711 | * Called when the last reference to dquot is dropped. If we are called from | |
712 | * downconvert thread, we cannot do all the handling here because grabbing | |
713 | * quota lock could deadlock (the node holding the quota lock could need some | |
714 | * other cluster lock to proceed but with blocked downconvert thread we cannot | |
715 | * release any lock). | |
716 | */ | |
9e33d69f JK |
717 | static int ocfs2_release_dquot(struct dquot *dquot) |
718 | { | |
719 | handle_t *handle; | |
720 | struct ocfs2_mem_dqinfo *oinfo = | |
4c376dca | 721 | sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv; |
9e33d69f JK |
722 | struct ocfs2_super *osb = OCFS2_SB(dquot->dq_sb); |
723 | int status = 0; | |
724 | ||
4c376dca EB |
725 | trace_ocfs2_release_dquot(from_kqid(&init_user_ns, dquot->dq_id), |
726 | dquot->dq_id.type); | |
9e33d69f | 727 | |
fb8dd8d7 JK |
728 | mutex_lock(&dquot->dq_lock); |
729 | /* Check whether we are not racing with some other dqget() */ | |
0dad3b52 | 730 | if (dquot_is_busy(dquot)) |
fb8dd8d7 | 731 | goto out; |
e3a767b6 JK |
732 | /* Running from downconvert thread? Postpone quota processing to wq */ |
733 | if (current == osb->dc_task) { | |
734 | /* | |
735 | * Grab our own reference to dquot and queue it for delayed | |
736 | * dropping. Quota code rechecks after calling | |
737 | * ->release_dquot() and won't free dquot structure. | |
738 | */ | |
739 | dqgrab(dquot); | |
740 | /* First entry on list -> queue work */ | |
741 | if (llist_add(&OCFS2_DQUOT(dquot)->list, &osb->dquot_drop_list)) | |
35ddf78e | 742 | queue_work(osb->ocfs2_wq, &osb->dquot_drop_work); |
e3a767b6 JK |
743 | goto out; |
744 | } | |
9e33d69f JK |
745 | status = ocfs2_lock_global_qf(oinfo, 1); |
746 | if (status < 0) | |
747 | goto out; | |
748 | handle = ocfs2_start_trans(osb, | |
4c376dca | 749 | ocfs2_calc_qdel_credits(dquot->dq_sb, dquot->dq_id.type)); |
9e33d69f JK |
750 | if (IS_ERR(handle)) { |
751 | status = PTR_ERR(handle); | |
752 | mlog_errno(status); | |
753 | goto out_ilock; | |
754 | } | |
fb8dd8d7 JK |
755 | |
756 | status = ocfs2_global_release_dquot(dquot); | |
757 | if (status < 0) { | |
758 | mlog_errno(status); | |
759 | goto out_trans; | |
760 | } | |
761 | status = ocfs2_local_release_dquot(handle, dquot); | |
762 | /* | |
763 | * If we fail here, we cannot do much as global structure is | |
764 | * already released. So just complain... | |
765 | */ | |
766 | if (status < 0) | |
767 | mlog_errno(status); | |
15c34a76 JK |
768 | /* |
769 | * Clear dq_off so that we search for the structure in quota file next | |
770 | * time we acquire it. The structure might be deleted and reallocated | |
771 | * elsewhere by another node while our dquot structure is on freelist. | |
772 | */ | |
773 | dquot->dq_off = 0; | |
fb8dd8d7 JK |
774 | clear_bit(DQ_ACTIVE_B, &dquot->dq_flags); |
775 | out_trans: | |
9e33d69f JK |
776 | ocfs2_commit_trans(osb, handle); |
777 | out_ilock: | |
778 | ocfs2_unlock_global_qf(oinfo, 1); | |
779 | out: | |
fb8dd8d7 | 780 | mutex_unlock(&dquot->dq_lock); |
c1e8d35e TM |
781 | if (status) |
782 | mlog_errno(status); | |
9e33d69f JK |
783 | return status; |
784 | } | |
785 | ||
fb8dd8d7 JK |
786 | /* |
787 | * Read global dquot structure from disk or create it if it does | |
788 | * not exist. Also update use count of the global structure and | |
789 | * create structure in node-local quota file. | |
790 | */ | |
9e33d69f JK |
791 | static int ocfs2_acquire_dquot(struct dquot *dquot) |
792 | { | |
fb8dd8d7 JK |
793 | int status = 0, err; |
794 | int ex = 0; | |
795 | struct super_block *sb = dquot->dq_sb; | |
796 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
4c376dca | 797 | int type = dquot->dq_id.type; |
fb8dd8d7 JK |
798 | struct ocfs2_mem_dqinfo *info = sb_dqinfo(sb, type)->dqi_priv; |
799 | struct inode *gqinode = info->dqi_gqinode; | |
800 | int need_alloc = ocfs2_global_qinit_alloc(sb, type); | |
801 | handle_t *handle; | |
9e33d69f | 802 | |
4c376dca EB |
803 | trace_ocfs2_acquire_dquot(from_kqid(&init_user_ns, dquot->dq_id), |
804 | type); | |
fb8dd8d7 JK |
805 | mutex_lock(&dquot->dq_lock); |
806 | /* | |
807 | * We need an exclusive lock, because we're going to update use count | |
808 | * and instantiate possibly new dquot structure | |
809 | */ | |
810 | status = ocfs2_lock_global_qf(info, 1); | |
9e33d69f JK |
811 | if (status < 0) |
812 | goto out; | |
15c34a76 JK |
813 | status = ocfs2_qinfo_lock(info, 0); |
814 | if (status < 0) | |
815 | goto out_dq; | |
816 | /* | |
817 | * We always want to read dquot structure from disk because we don't | |
818 | * know what happened with it while it was on freelist. | |
819 | */ | |
820 | status = qtree_read_dquot(&info->dqi_gi, dquot); | |
821 | ocfs2_qinfo_unlock(info, 0); | |
822 | if (status < 0) | |
823 | goto out_dq; | |
fb8dd8d7 JK |
824 | |
825 | OCFS2_DQUOT(dquot)->dq_use_count++; | |
826 | OCFS2_DQUOT(dquot)->dq_origspace = dquot->dq_dqb.dqb_curspace; | |
827 | OCFS2_DQUOT(dquot)->dq_originodes = dquot->dq_dqb.dqb_curinodes; | |
828 | if (!dquot->dq_off) { /* No real quota entry? */ | |
829 | ex = 1; | |
830 | /* | |
831 | * Add blocks to quota file before we start a transaction since | |
832 | * locking allocators ranks above a transaction start | |
833 | */ | |
834 | WARN_ON(journal_current_handle()); | |
5693486b | 835 | status = ocfs2_extend_no_holes(gqinode, NULL, |
f17c20dd JB |
836 | i_size_read(gqinode) + (need_alloc << sb->s_blocksize_bits), |
837 | i_size_read(gqinode)); | |
fb8dd8d7 JK |
838 | if (status < 0) |
839 | goto out_dq; | |
840 | } | |
841 | ||
842 | handle = ocfs2_start_trans(osb, | |
843 | ocfs2_calc_global_qinit_credits(sb, type)); | |
844 | if (IS_ERR(handle)) { | |
845 | status = PTR_ERR(handle); | |
846 | goto out_dq; | |
847 | } | |
848 | status = ocfs2_qinfo_lock(info, ex); | |
849 | if (status < 0) | |
850 | goto out_trans; | |
851 | status = qtree_write_dquot(&info->dqi_gi, dquot); | |
852 | if (ex && info_dirty(sb_dqinfo(sb, type))) { | |
853 | err = __ocfs2_global_write_info(sb, type); | |
854 | if (!status) | |
855 | status = err; | |
856 | } | |
857 | ocfs2_qinfo_unlock(info, ex); | |
858 | out_trans: | |
859 | ocfs2_commit_trans(osb, handle); | |
860 | out_dq: | |
861 | ocfs2_unlock_global_qf(info, 1); | |
862 | if (status < 0) | |
863 | goto out; | |
864 | ||
865 | status = ocfs2_create_local_dquot(dquot); | |
866 | if (status < 0) | |
867 | goto out; | |
868 | set_bit(DQ_ACTIVE_B, &dquot->dq_flags); | |
9e33d69f | 869 | out: |
fb8dd8d7 | 870 | mutex_unlock(&dquot->dq_lock); |
c1e8d35e TM |
871 | if (status) |
872 | mlog_errno(status); | |
9e33d69f JK |
873 | return status; |
874 | } | |
875 | ||
5a9530e4 JK |
876 | static int ocfs2_get_next_id(struct super_block *sb, struct kqid *qid) |
877 | { | |
878 | int type = qid->type; | |
879 | struct ocfs2_mem_dqinfo *info = sb_dqinfo(sb, type)->dqi_priv; | |
880 | int status = 0; | |
881 | ||
882 | trace_ocfs2_get_next_id(from_kqid(&init_user_ns, *qid), type); | |
8f9e8f5f JK |
883 | if (!sb_has_quota_loaded(sb, type)) { |
884 | status = -ESRCH; | |
885 | goto out; | |
886 | } | |
5a9530e4 JK |
887 | status = ocfs2_lock_global_qf(info, 0); |
888 | if (status < 0) | |
889 | goto out; | |
890 | status = ocfs2_qinfo_lock(info, 0); | |
891 | if (status < 0) | |
892 | goto out_global; | |
893 | status = qtree_get_next_id(&info->dqi_gi, qid); | |
894 | ocfs2_qinfo_unlock(info, 0); | |
895 | out_global: | |
896 | ocfs2_unlock_global_qf(info, 0); | |
897 | out: | |
8f9e8f5f JK |
898 | /* |
899 | * Avoid logging ENOENT since it just means there isn't next ID and | |
900 | * ESRCH which means quota isn't enabled for the filesystem. | |
901 | */ | |
902 | if (status && status != -ENOENT && status != -ESRCH) | |
5a9530e4 JK |
903 | mlog_errno(status); |
904 | return status; | |
905 | } | |
906 | ||
9e33d69f JK |
907 | static int ocfs2_mark_dquot_dirty(struct dquot *dquot) |
908 | { | |
909 | unsigned long mask = (1 << (DQ_LASTSET_B + QIF_ILIMITS_B)) | | |
910 | (1 << (DQ_LASTSET_B + QIF_BLIMITS_B)) | | |
911 | (1 << (DQ_LASTSET_B + QIF_INODES_B)) | | |
912 | (1 << (DQ_LASTSET_B + QIF_SPACE_B)) | | |
913 | (1 << (DQ_LASTSET_B + QIF_BTIME_B)) | | |
914 | (1 << (DQ_LASTSET_B + QIF_ITIME_B)); | |
915 | int sync = 0; | |
916 | int status; | |
917 | struct super_block *sb = dquot->dq_sb; | |
4c376dca | 918 | int type = dquot->dq_id.type; |
9e33d69f JK |
919 | struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv; |
920 | handle_t *handle; | |
921 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
922 | ||
4c376dca EB |
923 | trace_ocfs2_mark_dquot_dirty(from_kqid(&init_user_ns, dquot->dq_id), |
924 | type); | |
9e33d69f JK |
925 | |
926 | /* In case user set some limits, sync dquot immediately to global | |
927 | * quota file so that information propagates quicker */ | |
7b9ca4c6 | 928 | spin_lock(&dquot->dq_dqb_lock); |
9e33d69f JK |
929 | if (dquot->dq_flags & mask) |
930 | sync = 1; | |
7b9ca4c6 | 931 | spin_unlock(&dquot->dq_dqb_lock); |
f8afead7 JK |
932 | /* This is a slight hack but we can't afford getting global quota |
933 | * lock if we already have a transaction started. */ | |
934 | if (!sync || journal_current_handle()) { | |
9e33d69f JK |
935 | status = ocfs2_write_dquot(dquot); |
936 | goto out; | |
937 | } | |
938 | status = ocfs2_lock_global_qf(oinfo, 1); | |
939 | if (status < 0) | |
940 | goto out; | |
941 | handle = ocfs2_start_trans(osb, OCFS2_QSYNC_CREDITS); | |
942 | if (IS_ERR(handle)) { | |
943 | status = PTR_ERR(handle); | |
944 | mlog_errno(status); | |
945 | goto out_ilock; | |
946 | } | |
bc8230ee | 947 | down_write(&sb_dqopt(sb)->dqio_sem); |
9e33d69f JK |
948 | status = ocfs2_sync_dquot(dquot); |
949 | if (status < 0) { | |
950 | mlog_errno(status); | |
741e1289 | 951 | goto out_dlock; |
9e33d69f JK |
952 | } |
953 | /* Now write updated local dquot structure */ | |
741e1289 JK |
954 | status = ocfs2_local_write_dquot(dquot); |
955 | out_dlock: | |
bc8230ee | 956 | up_write(&sb_dqopt(sb)->dqio_sem); |
9e33d69f JK |
957 | ocfs2_commit_trans(osb, handle); |
958 | out_ilock: | |
959 | ocfs2_unlock_global_qf(oinfo, 1); | |
960 | out: | |
c1e8d35e TM |
961 | if (status) |
962 | mlog_errno(status); | |
9e33d69f JK |
963 | return status; |
964 | } | |
965 | ||
966 | /* This should happen only after set_dqinfo(). */ | |
967 | static int ocfs2_write_info(struct super_block *sb, int type) | |
968 | { | |
969 | handle_t *handle; | |
970 | int status = 0; | |
971 | struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv; | |
972 | ||
9e33d69f JK |
973 | status = ocfs2_lock_global_qf(oinfo, 1); |
974 | if (status < 0) | |
975 | goto out; | |
976 | handle = ocfs2_start_trans(OCFS2_SB(sb), OCFS2_QINFO_WRITE_CREDITS); | |
977 | if (IS_ERR(handle)) { | |
978 | status = PTR_ERR(handle); | |
979 | mlog_errno(status); | |
980 | goto out_ilock; | |
981 | } | |
982 | status = dquot_commit_info(sb, type); | |
983 | ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
984 | out_ilock: | |
985 | ocfs2_unlock_global_qf(oinfo, 1); | |
986 | out: | |
c1e8d35e TM |
987 | if (status) |
988 | mlog_errno(status); | |
9e33d69f JK |
989 | return status; |
990 | } | |
991 | ||
9e33d69f JK |
992 | static struct dquot *ocfs2_alloc_dquot(struct super_block *sb, int type) |
993 | { | |
994 | struct ocfs2_dquot *dquot = | |
995 | kmem_cache_zalloc(ocfs2_dquot_cachep, GFP_NOFS); | |
996 | ||
997 | if (!dquot) | |
998 | return NULL; | |
999 | return &dquot->dq_dquot; | |
1000 | } | |
1001 | ||
1002 | static void ocfs2_destroy_dquot(struct dquot *dquot) | |
1003 | { | |
1004 | kmem_cache_free(ocfs2_dquot_cachep, dquot); | |
1005 | } | |
1006 | ||
61e225dc | 1007 | const struct dquot_operations ocfs2_quota_operations = { |
741e1289 | 1008 | /* We never make dquot dirty so .write_dquot is never called */ |
9e33d69f JK |
1009 | .acquire_dquot = ocfs2_acquire_dquot, |
1010 | .release_dquot = ocfs2_release_dquot, | |
1011 | .mark_dirty = ocfs2_mark_dquot_dirty, | |
1012 | .write_info = ocfs2_write_info, | |
1013 | .alloc_dquot = ocfs2_alloc_dquot, | |
1014 | .destroy_dquot = ocfs2_destroy_dquot, | |
5a9530e4 | 1015 | .get_next_id = ocfs2_get_next_id, |
9e33d69f | 1016 | }; |