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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> |
cc56c33e | 15 | #include <linux/iversion.h> |
9e33d69f | 16 | |
9e33d69f JK |
17 | #include <cluster/masklog.h> |
18 | ||
19 | #include "ocfs2_fs.h" | |
20 | #include "ocfs2.h" | |
21 | #include "alloc.h" | |
d6b32bbb | 22 | #include "blockcheck.h" |
9e33d69f JK |
23 | #include "inode.h" |
24 | #include "journal.h" | |
25 | #include "file.h" | |
26 | #include "sysfile.h" | |
27 | #include "dlmglue.h" | |
28 | #include "uptodate.h" | |
ada50827 | 29 | #include "super.h" |
f64dd44e | 30 | #include "buffer_head_io.h" |
9e33d69f | 31 | #include "quota.h" |
1db986a8 | 32 | #include "ocfs2_trace.h" |
9e33d69f | 33 | |
fb8dd8d7 JK |
34 | /* |
35 | * Locking of quotas with OCFS2 is rather complex. Here are rules that | |
36 | * should be obeyed by all the functions: | |
37 | * - any write of quota structure (either to local or global file) is protected | |
bc8230ee | 38 | * by dqio_sem or dquot->dq_lock. |
fb8dd8d7 JK |
39 | * - any modification of global quota file holds inode cluster lock, i_mutex, |
40 | * and ip_alloc_sem of the global quota file (achieved by | |
41 | * ocfs2_lock_global_qf). It also has to hold qinfo_lock. | |
42 | * - an allocation of new blocks for local quota file is protected by | |
43 | * its ip_alloc_sem | |
44 | * | |
45 | * A rough sketch of locking dependencies (lf = local file, gf = global file): | |
46 | * Normal filesystem operation: | |
bc8230ee | 47 | * start_trans -> dqio_sem -> write to lf |
fb8dd8d7 | 48 | * Syncing of local and global file: |
bc8230ee | 49 | * ocfs2_lock_global_qf -> start_trans -> dqio_sem -> qinfo_lock -> |
fb8dd8d7 JK |
50 | * write to gf |
51 | * -> write to lf | |
52 | * Acquire dquot for the first time: | |
53 | * dq_lock -> ocfs2_lock_global_qf -> qinfo_lock -> read from gf | |
54 | * -> alloc space for gf | |
55 | * -> start_trans -> qinfo_lock -> write to gf | |
56 | * -> ip_alloc_sem of lf -> alloc space for lf | |
57 | * -> write to lf | |
58 | * Release last reference to dquot: | |
59 | * dq_lock -> ocfs2_lock_global_qf -> start_trans -> qinfo_lock -> write to gf | |
60 | * -> write to lf | |
61 | * Note that all the above operations also hold the inode cluster lock of lf. | |
62 | * Recovery: | |
63 | * inode cluster lock of recovered lf | |
64 | * -> read bitmaps -> ip_alloc_sem of lf | |
bc8230ee | 65 | * -> ocfs2_lock_global_qf -> start_trans -> dqio_sem -> qinfo_lock -> |
fb8dd8d7 JK |
66 | * write to gf |
67 | */ | |
68 | ||
171bf93c MF |
69 | static void qsync_work_fn(struct work_struct *work); |
70 | ||
9e33d69f JK |
71 | static void ocfs2_global_disk2memdqb(struct dquot *dquot, void *dp) |
72 | { | |
73 | struct ocfs2_global_disk_dqblk *d = dp; | |
74 | struct mem_dqblk *m = &dquot->dq_dqb; | |
75 | ||
76 | /* Update from disk only entries not set by the admin */ | |
77 | if (!test_bit(DQ_LASTSET_B + QIF_ILIMITS_B, &dquot->dq_flags)) { | |
78 | m->dqb_ihardlimit = le64_to_cpu(d->dqb_ihardlimit); | |
79 | m->dqb_isoftlimit = le64_to_cpu(d->dqb_isoftlimit); | |
80 | } | |
81 | if (!test_bit(DQ_LASTSET_B + QIF_INODES_B, &dquot->dq_flags)) | |
82 | m->dqb_curinodes = le64_to_cpu(d->dqb_curinodes); | |
83 | if (!test_bit(DQ_LASTSET_B + QIF_BLIMITS_B, &dquot->dq_flags)) { | |
84 | m->dqb_bhardlimit = le64_to_cpu(d->dqb_bhardlimit); | |
85 | m->dqb_bsoftlimit = le64_to_cpu(d->dqb_bsoftlimit); | |
86 | } | |
87 | if (!test_bit(DQ_LASTSET_B + QIF_SPACE_B, &dquot->dq_flags)) | |
88 | m->dqb_curspace = le64_to_cpu(d->dqb_curspace); | |
89 | if (!test_bit(DQ_LASTSET_B + QIF_BTIME_B, &dquot->dq_flags)) | |
90 | m->dqb_btime = le64_to_cpu(d->dqb_btime); | |
91 | if (!test_bit(DQ_LASTSET_B + QIF_ITIME_B, &dquot->dq_flags)) | |
92 | m->dqb_itime = le64_to_cpu(d->dqb_itime); | |
93 | OCFS2_DQUOT(dquot)->dq_use_count = le32_to_cpu(d->dqb_use_count); | |
94 | } | |
95 | ||
96 | static void ocfs2_global_mem2diskdqb(void *dp, struct dquot *dquot) | |
97 | { | |
98 | struct ocfs2_global_disk_dqblk *d = dp; | |
99 | struct mem_dqblk *m = &dquot->dq_dqb; | |
100 | ||
4c376dca | 101 | d->dqb_id = cpu_to_le32(from_kqid(&init_user_ns, dquot->dq_id)); |
9e33d69f JK |
102 | d->dqb_use_count = cpu_to_le32(OCFS2_DQUOT(dquot)->dq_use_count); |
103 | d->dqb_ihardlimit = cpu_to_le64(m->dqb_ihardlimit); | |
104 | d->dqb_isoftlimit = cpu_to_le64(m->dqb_isoftlimit); | |
105 | d->dqb_curinodes = cpu_to_le64(m->dqb_curinodes); | |
106 | d->dqb_bhardlimit = cpu_to_le64(m->dqb_bhardlimit); | |
107 | d->dqb_bsoftlimit = cpu_to_le64(m->dqb_bsoftlimit); | |
108 | d->dqb_curspace = cpu_to_le64(m->dqb_curspace); | |
109 | d->dqb_btime = cpu_to_le64(m->dqb_btime); | |
110 | d->dqb_itime = cpu_to_le64(m->dqb_itime); | |
7669f54c | 111 | d->dqb_pad1 = d->dqb_pad2 = 0; |
9e33d69f JK |
112 | } |
113 | ||
114 | static int ocfs2_global_is_id(void *dp, struct dquot *dquot) | |
115 | { | |
116 | struct ocfs2_global_disk_dqblk *d = dp; | |
117 | struct ocfs2_mem_dqinfo *oinfo = | |
4c376dca | 118 | sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv; |
9e33d69f JK |
119 | |
120 | if (qtree_entry_unused(&oinfo->dqi_gi, dp)) | |
121 | return 0; | |
4c376dca EB |
122 | |
123 | return qid_eq(make_kqid(&init_user_ns, dquot->dq_id.type, | |
124 | le32_to_cpu(d->dqb_id)), | |
125 | dquot->dq_id); | |
9e33d69f JK |
126 | } |
127 | ||
d1b98c23 | 128 | const struct qtree_fmt_operations ocfs2_global_ops = { |
9e33d69f JK |
129 | .mem2disk_dqblk = ocfs2_global_mem2diskdqb, |
130 | .disk2mem_dqblk = ocfs2_global_disk2memdqb, | |
131 | .is_id = ocfs2_global_is_id, | |
132 | }; | |
133 | ||
fb8dd8d7 | 134 | int ocfs2_validate_quota_block(struct super_block *sb, struct buffer_head *bh) |
684ef278 | 135 | { |
d6b32bbb JB |
136 | struct ocfs2_disk_dqtrailer *dqt = |
137 | ocfs2_block_dqtrailer(sb->s_blocksize, bh->b_data); | |
684ef278 | 138 | |
1db986a8 | 139 | trace_ocfs2_validate_quota_block((unsigned long long)bh->b_blocknr); |
684ef278 | 140 | |
d6b32bbb JB |
141 | BUG_ON(!buffer_uptodate(bh)); |
142 | ||
143 | /* | |
144 | * If the ecc fails, we return the error but otherwise | |
145 | * leave the filesystem running. We know any error is | |
146 | * local to this block. | |
147 | */ | |
148 | return ocfs2_validate_meta_ecc(sb, bh->b_data, &dqt->dq_check); | |
684ef278 JB |
149 | } |
150 | ||
f64dd44e JK |
151 | int ocfs2_read_quota_phys_block(struct inode *inode, u64 p_block, |
152 | struct buffer_head **bhp) | |
153 | { | |
154 | int rc; | |
155 | ||
156 | *bhp = NULL; | |
157 | rc = ocfs2_read_blocks(INODE_CACHE(inode), p_block, 1, bhp, 0, | |
158 | ocfs2_validate_quota_block); | |
159 | if (rc) | |
160 | mlog_errno(rc); | |
161 | return rc; | |
162 | } | |
163 | ||
9e33d69f JK |
164 | /* Read data from global quotafile - avoid pagecache and such because we cannot |
165 | * afford acquiring the locks... We use quota cluster lock to serialize | |
166 | * operations. Caller is responsible for acquiring it. */ | |
167 | ssize_t ocfs2_quota_read(struct super_block *sb, int type, char *data, | |
168 | size_t len, loff_t off) | |
169 | { | |
170 | struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv; | |
171 | struct inode *gqinode = oinfo->dqi_gqinode; | |
172 | loff_t i_size = i_size_read(gqinode); | |
173 | int offset = off & (sb->s_blocksize - 1); | |
174 | sector_t blk = off >> sb->s_blocksize_bits; | |
175 | int err = 0; | |
176 | struct buffer_head *bh; | |
177 | size_t toread, tocopy; | |
fb8dd8d7 | 178 | u64 pblock = 0, pcount = 0; |
9e33d69f JK |
179 | |
180 | if (off > i_size) | |
181 | return 0; | |
182 | if (off + len > i_size) | |
183 | len = i_size - off; | |
184 | toread = len; | |
185 | while (toread > 0) { | |
dad7d975 | 186 | tocopy = min_t(size_t, (sb->s_blocksize - offset), toread); |
fb8dd8d7 JK |
187 | if (!pcount) { |
188 | err = ocfs2_extent_map_get_blocks(gqinode, blk, &pblock, | |
189 | &pcount, NULL); | |
190 | if (err) { | |
191 | mlog_errno(err); | |
192 | return err; | |
193 | } | |
194 | } else { | |
195 | pcount--; | |
196 | pblock++; | |
197 | } | |
85eb8b73 | 198 | bh = NULL; |
fb8dd8d7 | 199 | err = ocfs2_read_quota_phys_block(gqinode, pblock, &bh); |
85eb8b73 | 200 | if (err) { |
9e33d69f JK |
201 | mlog_errno(err); |
202 | return err; | |
203 | } | |
204 | memcpy(data, bh->b_data + offset, tocopy); | |
205 | brelse(bh); | |
206 | offset = 0; | |
207 | toread -= tocopy; | |
208 | data += tocopy; | |
209 | blk++; | |
210 | } | |
211 | return len; | |
212 | } | |
213 | ||
214 | /* Write to quotafile (we know the transaction is already started and has | |
215 | * enough credits) */ | |
216 | ssize_t ocfs2_quota_write(struct super_block *sb, int type, | |
217 | const char *data, size_t len, loff_t off) | |
218 | { | |
219 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
220 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
221 | struct inode *gqinode = oinfo->dqi_gqinode; | |
222 | int offset = off & (sb->s_blocksize - 1); | |
223 | sector_t blk = off >> sb->s_blocksize_bits; | |
af09e51b | 224 | int err = 0, new = 0, ja_type; |
85eb8b73 | 225 | struct buffer_head *bh = NULL; |
9e33d69f | 226 | handle_t *handle = journal_current_handle(); |
fb8dd8d7 | 227 | u64 pblock, pcount; |
9e33d69f JK |
228 | |
229 | if (!handle) { | |
230 | mlog(ML_ERROR, "Quota write (off=%llu, len=%llu) cancelled " | |
231 | "because transaction was not started.\n", | |
232 | (unsigned long long)off, (unsigned long long)len); | |
233 | return -EIO; | |
234 | } | |
235 | if (len > sb->s_blocksize - OCFS2_QBLK_RESERVED_SPACE - offset) { | |
236 | WARN_ON(1); | |
237 | len = sb->s_blocksize - OCFS2_QBLK_RESERVED_SPACE - offset; | |
238 | } | |
239 | ||
f17c20dd | 240 | if (i_size_read(gqinode) < off + len) { |
b57ac2c4 JK |
241 | loff_t rounded_end = |
242 | ocfs2_align_bytes_to_blocks(sb, off + len); | |
243 | ||
fb8dd8d7 | 244 | /* Space is already allocated in ocfs2_acquire_dquot() */ |
9e33d69f JK |
245 | err = ocfs2_simple_size_update(gqinode, |
246 | oinfo->dqi_gqi_bh, | |
b57ac2c4 | 247 | rounded_end); |
9e33d69f JK |
248 | if (err < 0) |
249 | goto out; | |
250 | new = 1; | |
251 | } | |
fb8dd8d7 JK |
252 | err = ocfs2_extent_map_get_blocks(gqinode, blk, &pblock, &pcount, NULL); |
253 | if (err) { | |
254 | mlog_errno(err); | |
255 | goto out; | |
256 | } | |
9e33d69f JK |
257 | /* Not rewriting whole block? */ |
258 | if ((offset || len < sb->s_blocksize - OCFS2_QBLK_RESERVED_SPACE) && | |
259 | !new) { | |
fb8dd8d7 | 260 | err = ocfs2_read_quota_phys_block(gqinode, pblock, &bh); |
af09e51b | 261 | ja_type = OCFS2_JOURNAL_ACCESS_WRITE; |
9e33d69f | 262 | } else { |
fb8dd8d7 JK |
263 | bh = sb_getblk(sb, pblock); |
264 | if (!bh) | |
265 | err = -ENOMEM; | |
af09e51b | 266 | ja_type = OCFS2_JOURNAL_ACCESS_CREATE; |
9e33d69f | 267 | } |
af09e51b JK |
268 | if (err) { |
269 | mlog_errno(err); | |
e9956fae | 270 | goto out; |
9e33d69f JK |
271 | } |
272 | lock_buffer(bh); | |
273 | if (new) | |
274 | memset(bh->b_data, 0, sb->s_blocksize); | |
275 | memcpy(bh->b_data + offset, data, len); | |
276 | flush_dcache_page(bh->b_page); | |
af09e51b | 277 | set_buffer_uptodate(bh); |
9e33d69f | 278 | unlock_buffer(bh); |
8cb471e8 | 279 | ocfs2_set_buffer_uptodate(INODE_CACHE(gqinode), bh); |
0cf2f763 JB |
280 | err = ocfs2_journal_access_dq(handle, INODE_CACHE(gqinode), bh, |
281 | ja_type); | |
af09e51b JK |
282 | if (err < 0) { |
283 | brelse(bh); | |
284 | goto out; | |
285 | } | |
ec20cec7 | 286 | ocfs2_journal_dirty(handle, bh); |
9e33d69f | 287 | brelse(bh); |
9e33d69f JK |
288 | out: |
289 | if (err) { | |
9e33d69f JK |
290 | mlog_errno(err); |
291 | return err; | |
292 | } | |
cc56c33e | 293 | inode_inc_iversion(gqinode); |
9e33d69f | 294 | ocfs2_mark_inode_dirty(handle, gqinode, oinfo->dqi_gqi_bh); |
9e33d69f JK |
295 | return len; |
296 | } | |
297 | ||
298 | int ocfs2_lock_global_qf(struct ocfs2_mem_dqinfo *oinfo, int ex) | |
299 | { | |
300 | int status; | |
301 | struct buffer_head *bh = NULL; | |
302 | ||
303 | status = ocfs2_inode_lock(oinfo->dqi_gqinode, &bh, ex); | |
304 | if (status < 0) | |
305 | return status; | |
306 | spin_lock(&dq_data_lock); | |
307 | if (!oinfo->dqi_gqi_count++) | |
308 | oinfo->dqi_gqi_bh = bh; | |
309 | else | |
310 | WARN_ON(bh != oinfo->dqi_gqi_bh); | |
311 | spin_unlock(&dq_data_lock); | |
fb8dd8d7 | 312 | if (ex) { |
5955102c | 313 | inode_lock(oinfo->dqi_gqinode); |
fb8dd8d7 JK |
314 | down_write(&OCFS2_I(oinfo->dqi_gqinode)->ip_alloc_sem); |
315 | } else { | |
316 | down_read(&OCFS2_I(oinfo->dqi_gqinode)->ip_alloc_sem); | |
317 | } | |
9e33d69f JK |
318 | return 0; |
319 | } | |
320 | ||
321 | void ocfs2_unlock_global_qf(struct ocfs2_mem_dqinfo *oinfo, int ex) | |
322 | { | |
fb8dd8d7 JK |
323 | if (ex) { |
324 | up_write(&OCFS2_I(oinfo->dqi_gqinode)->ip_alloc_sem); | |
5955102c | 325 | inode_unlock(oinfo->dqi_gqinode); |
fb8dd8d7 JK |
326 | } else { |
327 | up_read(&OCFS2_I(oinfo->dqi_gqinode)->ip_alloc_sem); | |
328 | } | |
9e33d69f JK |
329 | ocfs2_inode_unlock(oinfo->dqi_gqinode, ex); |
330 | brelse(oinfo->dqi_gqi_bh); | |
331 | spin_lock(&dq_data_lock); | |
332 | if (!--oinfo->dqi_gqi_count) | |
333 | oinfo->dqi_gqi_bh = NULL; | |
334 | spin_unlock(&dq_data_lock); | |
335 | } | |
336 | ||
337 | /* Read information header from global quota file */ | |
338 | int ocfs2_global_read_info(struct super_block *sb, int type) | |
339 | { | |
340 | struct inode *gqinode = NULL; | |
52362810 JK |
341 | unsigned int ino[OCFS2_MAXQUOTAS] = { USER_QUOTA_SYSTEM_INODE, |
342 | GROUP_QUOTA_SYSTEM_INODE }; | |
9e33d69f JK |
343 | struct ocfs2_global_disk_dqinfo dinfo; |
344 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
345 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
ae4f6ef1 | 346 | u64 pcount; |
9e33d69f JK |
347 | int status; |
348 | ||
9e33d69f JK |
349 | /* Read global header */ |
350 | gqinode = ocfs2_get_system_file_inode(OCFS2_SB(sb), ino[type], | |
351 | OCFS2_INVALID_SLOT); | |
352 | if (!gqinode) { | |
353 | mlog(ML_ERROR, "failed to get global quota inode (type=%d)\n", | |
354 | type); | |
355 | status = -EINVAL; | |
356 | goto out_err; | |
357 | } | |
358 | oinfo->dqi_gi.dqi_sb = sb; | |
359 | oinfo->dqi_gi.dqi_type = type; | |
360 | ocfs2_qinfo_lock_res_init(&oinfo->dqi_gqlock, oinfo); | |
361 | oinfo->dqi_gi.dqi_entry_size = sizeof(struct ocfs2_global_disk_dqblk); | |
362 | oinfo->dqi_gi.dqi_ops = &ocfs2_global_ops; | |
363 | oinfo->dqi_gqi_bh = NULL; | |
364 | oinfo->dqi_gqi_count = 0; | |
365 | oinfo->dqi_gqinode = gqinode; | |
366 | status = ocfs2_lock_global_qf(oinfo, 0); | |
367 | if (status < 0) { | |
368 | mlog_errno(status); | |
369 | goto out_err; | |
370 | } | |
ae4f6ef1 JK |
371 | |
372 | status = ocfs2_extent_map_get_blocks(gqinode, 0, &oinfo->dqi_giblk, | |
373 | &pcount, NULL); | |
374 | if (status < 0) | |
375 | goto out_unlock; | |
376 | ||
377 | status = ocfs2_qinfo_lock(oinfo, 0); | |
378 | if (status < 0) | |
379 | goto out_unlock; | |
9e33d69f JK |
380 | status = sb->s_op->quota_read(sb, type, (char *)&dinfo, |
381 | sizeof(struct ocfs2_global_disk_dqinfo), | |
382 | OCFS2_GLOBAL_INFO_OFF); | |
ae4f6ef1 | 383 | ocfs2_qinfo_unlock(oinfo, 0); |
9e33d69f JK |
384 | ocfs2_unlock_global_qf(oinfo, 0); |
385 | if (status != sizeof(struct ocfs2_global_disk_dqinfo)) { | |
386 | mlog(ML_ERROR, "Cannot read global quota info (%d).\n", | |
387 | status); | |
388 | if (status >= 0) | |
389 | status = -EIO; | |
390 | mlog_errno(status); | |
391 | goto out_err; | |
392 | } | |
393 | info->dqi_bgrace = le32_to_cpu(dinfo.dqi_bgrace); | |
394 | info->dqi_igrace = le32_to_cpu(dinfo.dqi_igrace); | |
395 | oinfo->dqi_syncms = le32_to_cpu(dinfo.dqi_syncms); | |
396 | oinfo->dqi_gi.dqi_blocks = le32_to_cpu(dinfo.dqi_blocks); | |
397 | oinfo->dqi_gi.dqi_free_blk = le32_to_cpu(dinfo.dqi_free_blk); | |
398 | oinfo->dqi_gi.dqi_free_entry = le32_to_cpu(dinfo.dqi_free_entry); | |
399 | oinfo->dqi_gi.dqi_blocksize_bits = sb->s_blocksize_bits; | |
400 | oinfo->dqi_gi.dqi_usable_bs = sb->s_blocksize - | |
401 | OCFS2_QBLK_RESERVED_SPACE; | |
402 | oinfo->dqi_gi.dqi_qtree_depth = qtree_depth(&oinfo->dqi_gi); | |
171bf93c | 403 | INIT_DELAYED_WORK(&oinfo->dqi_sync_work, qsync_work_fn); |
316873c9 TH |
404 | schedule_delayed_work(&oinfo->dqi_sync_work, |
405 | msecs_to_jiffies(oinfo->dqi_syncms)); | |
171bf93c | 406 | |
9e33d69f | 407 | out_err: |
9e33d69f | 408 | return status; |
ae4f6ef1 JK |
409 | out_unlock: |
410 | ocfs2_unlock_global_qf(oinfo, 0); | |
411 | mlog_errno(status); | |
412 | goto out_err; | |
9e33d69f JK |
413 | } |
414 | ||
415 | /* Write information to global quota file. Expects exlusive lock on quota | |
416 | * file inode and quota info */ | |
417 | static int __ocfs2_global_write_info(struct super_block *sb, int type) | |
418 | { | |
419 | struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
420 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
421 | struct ocfs2_global_disk_dqinfo dinfo; | |
422 | ssize_t size; | |
423 | ||
424 | spin_lock(&dq_data_lock); | |
425 | info->dqi_flags &= ~DQF_INFO_DIRTY; | |
426 | dinfo.dqi_bgrace = cpu_to_le32(info->dqi_bgrace); | |
427 | dinfo.dqi_igrace = cpu_to_le32(info->dqi_igrace); | |
428 | spin_unlock(&dq_data_lock); | |
429 | dinfo.dqi_syncms = cpu_to_le32(oinfo->dqi_syncms); | |
430 | dinfo.dqi_blocks = cpu_to_le32(oinfo->dqi_gi.dqi_blocks); | |
431 | dinfo.dqi_free_blk = cpu_to_le32(oinfo->dqi_gi.dqi_free_blk); | |
432 | dinfo.dqi_free_entry = cpu_to_le32(oinfo->dqi_gi.dqi_free_entry); | |
433 | size = sb->s_op->quota_write(sb, type, (char *)&dinfo, | |
434 | sizeof(struct ocfs2_global_disk_dqinfo), | |
435 | OCFS2_GLOBAL_INFO_OFF); | |
436 | if (size != sizeof(struct ocfs2_global_disk_dqinfo)) { | |
437 | mlog(ML_ERROR, "Cannot write global quota info structure\n"); | |
438 | if (size >= 0) | |
439 | size = -EIO; | |
440 | return size; | |
441 | } | |
442 | return 0; | |
443 | } | |
444 | ||
445 | int ocfs2_global_write_info(struct super_block *sb, int type) | |
446 | { | |
447 | int err; | |
9a8ae30e JK |
448 | struct quota_info *dqopt = sb_dqopt(sb); |
449 | struct ocfs2_mem_dqinfo *info = dqopt->info[type].dqi_priv; | |
9e33d69f | 450 | |
9a8ae30e | 451 | down_write(&dqopt->dqio_sem); |
9e33d69f JK |
452 | err = ocfs2_qinfo_lock(info, 1); |
453 | if (err < 0) | |
9a8ae30e | 454 | goto out_sem; |
9e33d69f JK |
455 | err = __ocfs2_global_write_info(sb, type); |
456 | ocfs2_qinfo_unlock(info, 1); | |
9a8ae30e JK |
457 | out_sem: |
458 | up_write(&dqopt->dqio_sem); | |
9e33d69f JK |
459 | return err; |
460 | } | |
461 | ||
b409d7a0 JK |
462 | static int ocfs2_global_qinit_alloc(struct super_block *sb, int type) |
463 | { | |
464 | struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv; | |
465 | ||
466 | /* | |
467 | * We may need to allocate tree blocks and a leaf block but not the | |
468 | * root block | |
469 | */ | |
470 | return oinfo->dqi_gi.dqi_qtree_depth; | |
471 | } | |
472 | ||
473 | static int ocfs2_calc_global_qinit_credits(struct super_block *sb, int type) | |
474 | { | |
832d09cf JK |
475 | /* We modify all the allocated blocks, tree root, info block and |
476 | * the inode */ | |
b409d7a0 | 477 | return (ocfs2_global_qinit_alloc(sb, type) + 2) * |
832d09cf | 478 | OCFS2_QUOTA_BLOCK_UPDATE_CREDITS + 1; |
b409d7a0 JK |
479 | } |
480 | ||
9e33d69f JK |
481 | /* Sync local information about quota modifications with global quota file. |
482 | * Caller must have started the transaction and obtained exclusive lock for | |
483 | * global quota file inode */ | |
484 | int __ocfs2_sync_dquot(struct dquot *dquot, int freeing) | |
485 | { | |
486 | int err, err2; | |
487 | struct super_block *sb = dquot->dq_sb; | |
4c376dca | 488 | int type = dquot->dq_id.type; |
9e33d69f JK |
489 | struct ocfs2_mem_dqinfo *info = sb_dqinfo(sb, type)->dqi_priv; |
490 | struct ocfs2_global_disk_dqblk dqblk; | |
491 | s64 spacechange, inodechange; | |
e008bb61 | 492 | time64_t olditime, oldbtime; |
9e33d69f JK |
493 | |
494 | err = sb->s_op->quota_read(sb, type, (char *)&dqblk, | |
495 | sizeof(struct ocfs2_global_disk_dqblk), | |
496 | dquot->dq_off); | |
497 | if (err != sizeof(struct ocfs2_global_disk_dqblk)) { | |
498 | if (err >= 0) { | |
499 | mlog(ML_ERROR, "Short read from global quota file " | |
500 | "(%u read)\n", err); | |
501 | err = -EIO; | |
502 | } | |
503 | goto out; | |
504 | } | |
505 | ||
506 | /* Update space and inode usage. Get also other information from | |
507 | * global quota file so that we don't overwrite any changes there. | |
508 | * We are */ | |
7b9ca4c6 | 509 | spin_lock(&dquot->dq_dqb_lock); |
9e33d69f JK |
510 | spacechange = dquot->dq_dqb.dqb_curspace - |
511 | OCFS2_DQUOT(dquot)->dq_origspace; | |
512 | inodechange = dquot->dq_dqb.dqb_curinodes - | |
513 | OCFS2_DQUOT(dquot)->dq_originodes; | |
514 | olditime = dquot->dq_dqb.dqb_itime; | |
515 | oldbtime = dquot->dq_dqb.dqb_btime; | |
516 | ocfs2_global_disk2memdqb(dquot, &dqblk); | |
4c376dca EB |
517 | trace_ocfs2_sync_dquot(from_kqid(&init_user_ns, dquot->dq_id), |
518 | dquot->dq_dqb.dqb_curspace, | |
1db986a8 TM |
519 | (long long)spacechange, |
520 | dquot->dq_dqb.dqb_curinodes, | |
521 | (long long)inodechange); | |
9e33d69f JK |
522 | if (!test_bit(DQ_LASTSET_B + QIF_SPACE_B, &dquot->dq_flags)) |
523 | dquot->dq_dqb.dqb_curspace += spacechange; | |
524 | if (!test_bit(DQ_LASTSET_B + QIF_INODES_B, &dquot->dq_flags)) | |
525 | dquot->dq_dqb.dqb_curinodes += inodechange; | |
526 | /* Set properly space grace time... */ | |
527 | if (dquot->dq_dqb.dqb_bsoftlimit && | |
528 | dquot->dq_dqb.dqb_curspace > dquot->dq_dqb.dqb_bsoftlimit) { | |
529 | if (!test_bit(DQ_LASTSET_B + QIF_BTIME_B, &dquot->dq_flags) && | |
530 | oldbtime > 0) { | |
531 | if (dquot->dq_dqb.dqb_btime > 0) | |
532 | dquot->dq_dqb.dqb_btime = | |
533 | min(dquot->dq_dqb.dqb_btime, oldbtime); | |
534 | else | |
535 | dquot->dq_dqb.dqb_btime = oldbtime; | |
536 | } | |
537 | } else { | |
538 | dquot->dq_dqb.dqb_btime = 0; | |
539 | clear_bit(DQ_BLKS_B, &dquot->dq_flags); | |
540 | } | |
541 | /* Set properly inode grace time... */ | |
542 | if (dquot->dq_dqb.dqb_isoftlimit && | |
543 | dquot->dq_dqb.dqb_curinodes > dquot->dq_dqb.dqb_isoftlimit) { | |
544 | if (!test_bit(DQ_LASTSET_B + QIF_ITIME_B, &dquot->dq_flags) && | |
545 | olditime > 0) { | |
546 | if (dquot->dq_dqb.dqb_itime > 0) | |
547 | dquot->dq_dqb.dqb_itime = | |
548 | min(dquot->dq_dqb.dqb_itime, olditime); | |
549 | else | |
550 | dquot->dq_dqb.dqb_itime = olditime; | |
551 | } | |
552 | } else { | |
553 | dquot->dq_dqb.dqb_itime = 0; | |
554 | clear_bit(DQ_INODES_B, &dquot->dq_flags); | |
555 | } | |
556 | /* All information is properly updated, clear the flags */ | |
557 | __clear_bit(DQ_LASTSET_B + QIF_SPACE_B, &dquot->dq_flags); | |
558 | __clear_bit(DQ_LASTSET_B + QIF_INODES_B, &dquot->dq_flags); | |
559 | __clear_bit(DQ_LASTSET_B + QIF_BLIMITS_B, &dquot->dq_flags); | |
560 | __clear_bit(DQ_LASTSET_B + QIF_ILIMITS_B, &dquot->dq_flags); | |
561 | __clear_bit(DQ_LASTSET_B + QIF_BTIME_B, &dquot->dq_flags); | |
562 | __clear_bit(DQ_LASTSET_B + QIF_ITIME_B, &dquot->dq_flags); | |
563 | OCFS2_DQUOT(dquot)->dq_origspace = dquot->dq_dqb.dqb_curspace; | |
564 | OCFS2_DQUOT(dquot)->dq_originodes = dquot->dq_dqb.dqb_curinodes; | |
7b9ca4c6 | 565 | spin_unlock(&dquot->dq_dqb_lock); |
9e33d69f JK |
566 | err = ocfs2_qinfo_lock(info, freeing); |
567 | if (err < 0) { | |
25985edc | 568 | mlog(ML_ERROR, "Failed to lock quota info, losing quota write" |
4c376dca EB |
569 | " (type=%d, id=%u)\n", dquot->dq_id.type, |
570 | (unsigned)from_kqid(&init_user_ns, dquot->dq_id)); | |
9e33d69f JK |
571 | goto out; |
572 | } | |
573 | if (freeing) | |
574 | OCFS2_DQUOT(dquot)->dq_use_count--; | |
575 | err = qtree_write_dquot(&info->dqi_gi, dquot); | |
576 | if (err < 0) | |
577 | goto out_qlock; | |
578 | if (freeing && !OCFS2_DQUOT(dquot)->dq_use_count) { | |
579 | err = qtree_release_dquot(&info->dqi_gi, dquot); | |
580 | if (info_dirty(sb_dqinfo(sb, type))) { | |
581 | err2 = __ocfs2_global_write_info(sb, type); | |
582 | if (!err) | |
583 | err = err2; | |
584 | } | |
585 | } | |
586 | out_qlock: | |
587 | ocfs2_qinfo_unlock(info, freeing); | |
588 | out: | |
589 | if (err < 0) | |
590 | mlog_errno(err); | |
591 | return err; | |
592 | } | |
593 | ||
171bf93c MF |
594 | /* |
595 | * Functions for periodic syncing of dquots with global file | |
596 | */ | |
597 | static int ocfs2_sync_dquot_helper(struct dquot *dquot, unsigned long type) | |
598 | { | |
599 | handle_t *handle; | |
600 | struct super_block *sb = dquot->dq_sb; | |
601 | struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv; | |
602 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
603 | int status = 0; | |
604 | ||
4c376dca EB |
605 | trace_ocfs2_sync_dquot_helper(from_kqid(&init_user_ns, dquot->dq_id), |
606 | dquot->dq_id.type, | |
1db986a8 | 607 | type, sb->s_id); |
4c376dca | 608 | if (type != dquot->dq_id.type) |
171bf93c MF |
609 | goto out; |
610 | status = ocfs2_lock_global_qf(oinfo, 1); | |
611 | if (status < 0) | |
612 | goto out; | |
613 | ||
614 | handle = ocfs2_start_trans(osb, OCFS2_QSYNC_CREDITS); | |
615 | if (IS_ERR(handle)) { | |
616 | status = PTR_ERR(handle); | |
617 | mlog_errno(status); | |
618 | goto out_ilock; | |
619 | } | |
bc8230ee | 620 | down_write(&sb_dqopt(sb)->dqio_sem); |
171bf93c | 621 | status = ocfs2_sync_dquot(dquot); |
171bf93c MF |
622 | if (status < 0) |
623 | mlog_errno(status); | |
624 | /* We have to write local structure as well... */ | |
741e1289 | 625 | status = ocfs2_local_write_dquot(dquot); |
171bf93c MF |
626 | if (status < 0) |
627 | mlog_errno(status); | |
bc8230ee | 628 | up_write(&sb_dqopt(sb)->dqio_sem); |
171bf93c MF |
629 | ocfs2_commit_trans(osb, handle); |
630 | out_ilock: | |
631 | ocfs2_unlock_global_qf(oinfo, 1); | |
632 | out: | |
171bf93c MF |
633 | return status; |
634 | } | |
635 | ||
636 | static void qsync_work_fn(struct work_struct *work) | |
637 | { | |
638 | struct ocfs2_mem_dqinfo *oinfo = container_of(work, | |
639 | struct ocfs2_mem_dqinfo, | |
640 | dqi_sync_work.work); | |
641 | struct super_block *sb = oinfo->dqi_gqinode->i_sb; | |
642 | ||
2a64f80e JK |
643 | /* |
644 | * We have to be careful here not to deadlock on s_umount as umount | |
645 | * disabling quotas may be in progress and it waits for this work to | |
646 | * complete. If trylock fails, we'll do the sync next time... | |
647 | */ | |
648 | if (down_read_trylock(&sb->s_umount)) { | |
649 | dquot_scan_active(sb, ocfs2_sync_dquot_helper, oinfo->dqi_type); | |
650 | up_read(&sb->s_umount); | |
651 | } | |
316873c9 TH |
652 | schedule_delayed_work(&oinfo->dqi_sync_work, |
653 | msecs_to_jiffies(oinfo->dqi_syncms)); | |
171bf93c MF |
654 | } |
655 | ||
9e33d69f JK |
656 | /* |
657 | * Wrappers for generic quota functions | |
658 | */ | |
659 | ||
660 | static int ocfs2_write_dquot(struct dquot *dquot) | |
661 | { | |
662 | handle_t *handle; | |
663 | struct ocfs2_super *osb = OCFS2_SB(dquot->dq_sb); | |
664 | int status = 0; | |
665 | ||
4c376dca EB |
666 | trace_ocfs2_write_dquot(from_kqid(&init_user_ns, dquot->dq_id), |
667 | dquot->dq_id.type); | |
9e33d69f JK |
668 | |
669 | handle = ocfs2_start_trans(osb, OCFS2_QWRITE_CREDITS); | |
670 | if (IS_ERR(handle)) { | |
671 | status = PTR_ERR(handle); | |
672 | mlog_errno(status); | |
673 | goto out; | |
674 | } | |
bc8230ee | 675 | down_write(&sb_dqopt(dquot->dq_sb)->dqio_sem); |
741e1289 | 676 | status = ocfs2_local_write_dquot(dquot); |
bc8230ee | 677 | up_write(&sb_dqopt(dquot->dq_sb)->dqio_sem); |
9e33d69f JK |
678 | ocfs2_commit_trans(osb, handle); |
679 | out: | |
9e33d69f JK |
680 | return status; |
681 | } | |
682 | ||
b409d7a0 | 683 | static int ocfs2_calc_qdel_credits(struct super_block *sb, int type) |
9e33d69f | 684 | { |
b409d7a0 | 685 | struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv; |
0584974a JK |
686 | /* |
687 | * We modify tree, leaf block, global info, local chunk header, | |
688 | * global and local inode; OCFS2_QINFO_WRITE_CREDITS already | |
689 | * accounts for inode update | |
690 | */ | |
b409d7a0 JK |
691 | return (oinfo->dqi_gi.dqi_qtree_depth + 2) * |
692 | OCFS2_QUOTA_BLOCK_UPDATE_CREDITS + | |
0584974a | 693 | OCFS2_QINFO_WRITE_CREDITS + |
0584974a | 694 | OCFS2_INODE_UPDATE_CREDITS; |
9e33d69f JK |
695 | } |
696 | ||
e3a767b6 JK |
697 | void ocfs2_drop_dquot_refs(struct work_struct *work) |
698 | { | |
699 | struct ocfs2_super *osb = container_of(work, struct ocfs2_super, | |
700 | dquot_drop_work); | |
701 | struct llist_node *list; | |
702 | struct ocfs2_dquot *odquot, *next_odquot; | |
703 | ||
704 | list = llist_del_all(&osb->dquot_drop_list); | |
705 | llist_for_each_entry_safe(odquot, next_odquot, list, list) { | |
706 | /* Drop the reference we acquired in ocfs2_dquot_release() */ | |
707 | dqput(&odquot->dq_dquot); | |
708 | } | |
709 | } | |
710 | ||
711 | /* | |
712 | * Called when the last reference to dquot is dropped. If we are called from | |
713 | * downconvert thread, we cannot do all the handling here because grabbing | |
714 | * quota lock could deadlock (the node holding the quota lock could need some | |
715 | * other cluster lock to proceed but with blocked downconvert thread we cannot | |
716 | * release any lock). | |
717 | */ | |
9e33d69f JK |
718 | static int ocfs2_release_dquot(struct dquot *dquot) |
719 | { | |
720 | handle_t *handle; | |
721 | struct ocfs2_mem_dqinfo *oinfo = | |
4c376dca | 722 | sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv; |
9e33d69f JK |
723 | struct ocfs2_super *osb = OCFS2_SB(dquot->dq_sb); |
724 | int status = 0; | |
725 | ||
4c376dca EB |
726 | trace_ocfs2_release_dquot(from_kqid(&init_user_ns, dquot->dq_id), |
727 | dquot->dq_id.type); | |
9e33d69f | 728 | |
fb8dd8d7 JK |
729 | mutex_lock(&dquot->dq_lock); |
730 | /* Check whether we are not racing with some other dqget() */ | |
731 | if (atomic_read(&dquot->dq_count) > 1) | |
732 | goto out; | |
e3a767b6 JK |
733 | /* Running from downconvert thread? Postpone quota processing to wq */ |
734 | if (current == osb->dc_task) { | |
735 | /* | |
736 | * Grab our own reference to dquot and queue it for delayed | |
737 | * dropping. Quota code rechecks after calling | |
738 | * ->release_dquot() and won't free dquot structure. | |
739 | */ | |
740 | dqgrab(dquot); | |
741 | /* First entry on list -> queue work */ | |
742 | if (llist_add(&OCFS2_DQUOT(dquot)->list, &osb->dquot_drop_list)) | |
35ddf78e | 743 | queue_work(osb->ocfs2_wq, &osb->dquot_drop_work); |
e3a767b6 JK |
744 | goto out; |
745 | } | |
9e33d69f JK |
746 | status = ocfs2_lock_global_qf(oinfo, 1); |
747 | if (status < 0) | |
748 | goto out; | |
749 | handle = ocfs2_start_trans(osb, | |
4c376dca | 750 | ocfs2_calc_qdel_credits(dquot->dq_sb, dquot->dq_id.type)); |
9e33d69f JK |
751 | if (IS_ERR(handle)) { |
752 | status = PTR_ERR(handle); | |
753 | mlog_errno(status); | |
754 | goto out_ilock; | |
755 | } | |
fb8dd8d7 JK |
756 | |
757 | status = ocfs2_global_release_dquot(dquot); | |
758 | if (status < 0) { | |
759 | mlog_errno(status); | |
760 | goto out_trans; | |
761 | } | |
762 | status = ocfs2_local_release_dquot(handle, dquot); | |
763 | /* | |
764 | * If we fail here, we cannot do much as global structure is | |
765 | * already released. So just complain... | |
766 | */ | |
767 | if (status < 0) | |
768 | mlog_errno(status); | |
15c34a76 JK |
769 | /* |
770 | * Clear dq_off so that we search for the structure in quota file next | |
771 | * time we acquire it. The structure might be deleted and reallocated | |
772 | * elsewhere by another node while our dquot structure is on freelist. | |
773 | */ | |
774 | dquot->dq_off = 0; | |
fb8dd8d7 JK |
775 | clear_bit(DQ_ACTIVE_B, &dquot->dq_flags); |
776 | out_trans: | |
9e33d69f JK |
777 | ocfs2_commit_trans(osb, handle); |
778 | out_ilock: | |
779 | ocfs2_unlock_global_qf(oinfo, 1); | |
780 | out: | |
fb8dd8d7 | 781 | mutex_unlock(&dquot->dq_lock); |
c1e8d35e TM |
782 | if (status) |
783 | mlog_errno(status); | |
9e33d69f JK |
784 | return status; |
785 | } | |
786 | ||
fb8dd8d7 JK |
787 | /* |
788 | * Read global dquot structure from disk or create it if it does | |
789 | * not exist. Also update use count of the global structure and | |
790 | * create structure in node-local quota file. | |
791 | */ | |
9e33d69f JK |
792 | static int ocfs2_acquire_dquot(struct dquot *dquot) |
793 | { | |
fb8dd8d7 JK |
794 | int status = 0, err; |
795 | int ex = 0; | |
796 | struct super_block *sb = dquot->dq_sb; | |
797 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
4c376dca | 798 | int type = dquot->dq_id.type; |
fb8dd8d7 JK |
799 | struct ocfs2_mem_dqinfo *info = sb_dqinfo(sb, type)->dqi_priv; |
800 | struct inode *gqinode = info->dqi_gqinode; | |
801 | int need_alloc = ocfs2_global_qinit_alloc(sb, type); | |
802 | handle_t *handle; | |
9e33d69f | 803 | |
4c376dca EB |
804 | trace_ocfs2_acquire_dquot(from_kqid(&init_user_ns, dquot->dq_id), |
805 | type); | |
fb8dd8d7 JK |
806 | mutex_lock(&dquot->dq_lock); |
807 | /* | |
808 | * We need an exclusive lock, because we're going to update use count | |
809 | * and instantiate possibly new dquot structure | |
810 | */ | |
811 | status = ocfs2_lock_global_qf(info, 1); | |
9e33d69f JK |
812 | if (status < 0) |
813 | goto out; | |
15c34a76 JK |
814 | status = ocfs2_qinfo_lock(info, 0); |
815 | if (status < 0) | |
816 | goto out_dq; | |
817 | /* | |
818 | * We always want to read dquot structure from disk because we don't | |
819 | * know what happened with it while it was on freelist. | |
820 | */ | |
821 | status = qtree_read_dquot(&info->dqi_gi, dquot); | |
822 | ocfs2_qinfo_unlock(info, 0); | |
823 | if (status < 0) | |
824 | goto out_dq; | |
fb8dd8d7 JK |
825 | |
826 | OCFS2_DQUOT(dquot)->dq_use_count++; | |
827 | OCFS2_DQUOT(dquot)->dq_origspace = dquot->dq_dqb.dqb_curspace; | |
828 | OCFS2_DQUOT(dquot)->dq_originodes = dquot->dq_dqb.dqb_curinodes; | |
829 | if (!dquot->dq_off) { /* No real quota entry? */ | |
830 | ex = 1; | |
831 | /* | |
832 | * Add blocks to quota file before we start a transaction since | |
833 | * locking allocators ranks above a transaction start | |
834 | */ | |
835 | WARN_ON(journal_current_handle()); | |
5693486b | 836 | status = ocfs2_extend_no_holes(gqinode, NULL, |
f17c20dd JB |
837 | i_size_read(gqinode) + (need_alloc << sb->s_blocksize_bits), |
838 | i_size_read(gqinode)); | |
fb8dd8d7 JK |
839 | if (status < 0) |
840 | goto out_dq; | |
841 | } | |
842 | ||
843 | handle = ocfs2_start_trans(osb, | |
844 | ocfs2_calc_global_qinit_credits(sb, type)); | |
845 | if (IS_ERR(handle)) { | |
846 | status = PTR_ERR(handle); | |
847 | goto out_dq; | |
848 | } | |
849 | status = ocfs2_qinfo_lock(info, ex); | |
850 | if (status < 0) | |
851 | goto out_trans; | |
852 | status = qtree_write_dquot(&info->dqi_gi, dquot); | |
853 | if (ex && info_dirty(sb_dqinfo(sb, type))) { | |
854 | err = __ocfs2_global_write_info(sb, type); | |
855 | if (!status) | |
856 | status = err; | |
857 | } | |
858 | ocfs2_qinfo_unlock(info, ex); | |
859 | out_trans: | |
860 | ocfs2_commit_trans(osb, handle); | |
861 | out_dq: | |
862 | ocfs2_unlock_global_qf(info, 1); | |
863 | if (status < 0) | |
864 | goto out; | |
865 | ||
866 | status = ocfs2_create_local_dquot(dquot); | |
867 | if (status < 0) | |
868 | goto out; | |
869 | set_bit(DQ_ACTIVE_B, &dquot->dq_flags); | |
9e33d69f | 870 | out: |
fb8dd8d7 | 871 | mutex_unlock(&dquot->dq_lock); |
c1e8d35e TM |
872 | if (status) |
873 | mlog_errno(status); | |
9e33d69f JK |
874 | return status; |
875 | } | |
876 | ||
5a9530e4 JK |
877 | static int ocfs2_get_next_id(struct super_block *sb, struct kqid *qid) |
878 | { | |
879 | int type = qid->type; | |
880 | struct ocfs2_mem_dqinfo *info = sb_dqinfo(sb, type)->dqi_priv; | |
881 | int status = 0; | |
882 | ||
883 | trace_ocfs2_get_next_id(from_kqid(&init_user_ns, *qid), type); | |
8f9e8f5f JK |
884 | if (!sb_has_quota_loaded(sb, type)) { |
885 | status = -ESRCH; | |
886 | goto out; | |
887 | } | |
5a9530e4 JK |
888 | status = ocfs2_lock_global_qf(info, 0); |
889 | if (status < 0) | |
890 | goto out; | |
891 | status = ocfs2_qinfo_lock(info, 0); | |
892 | if (status < 0) | |
893 | goto out_global; | |
894 | status = qtree_get_next_id(&info->dqi_gi, qid); | |
895 | ocfs2_qinfo_unlock(info, 0); | |
896 | out_global: | |
897 | ocfs2_unlock_global_qf(info, 0); | |
898 | out: | |
8f9e8f5f JK |
899 | /* |
900 | * Avoid logging ENOENT since it just means there isn't next ID and | |
901 | * ESRCH which means quota isn't enabled for the filesystem. | |
902 | */ | |
903 | if (status && status != -ENOENT && status != -ESRCH) | |
5a9530e4 JK |
904 | mlog_errno(status); |
905 | return status; | |
906 | } | |
907 | ||
9e33d69f JK |
908 | static int ocfs2_mark_dquot_dirty(struct dquot *dquot) |
909 | { | |
910 | unsigned long mask = (1 << (DQ_LASTSET_B + QIF_ILIMITS_B)) | | |
911 | (1 << (DQ_LASTSET_B + QIF_BLIMITS_B)) | | |
912 | (1 << (DQ_LASTSET_B + QIF_INODES_B)) | | |
913 | (1 << (DQ_LASTSET_B + QIF_SPACE_B)) | | |
914 | (1 << (DQ_LASTSET_B + QIF_BTIME_B)) | | |
915 | (1 << (DQ_LASTSET_B + QIF_ITIME_B)); | |
916 | int sync = 0; | |
917 | int status; | |
918 | struct super_block *sb = dquot->dq_sb; | |
4c376dca | 919 | int type = dquot->dq_id.type; |
9e33d69f JK |
920 | struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv; |
921 | handle_t *handle; | |
922 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
923 | ||
4c376dca EB |
924 | trace_ocfs2_mark_dquot_dirty(from_kqid(&init_user_ns, dquot->dq_id), |
925 | type); | |
9e33d69f JK |
926 | |
927 | /* In case user set some limits, sync dquot immediately to global | |
928 | * quota file so that information propagates quicker */ | |
7b9ca4c6 | 929 | spin_lock(&dquot->dq_dqb_lock); |
9e33d69f JK |
930 | if (dquot->dq_flags & mask) |
931 | sync = 1; | |
7b9ca4c6 | 932 | spin_unlock(&dquot->dq_dqb_lock); |
f8afead7 JK |
933 | /* This is a slight hack but we can't afford getting global quota |
934 | * lock if we already have a transaction started. */ | |
935 | if (!sync || journal_current_handle()) { | |
9e33d69f JK |
936 | status = ocfs2_write_dquot(dquot); |
937 | goto out; | |
938 | } | |
939 | status = ocfs2_lock_global_qf(oinfo, 1); | |
940 | if (status < 0) | |
941 | goto out; | |
942 | handle = ocfs2_start_trans(osb, OCFS2_QSYNC_CREDITS); | |
943 | if (IS_ERR(handle)) { | |
944 | status = PTR_ERR(handle); | |
945 | mlog_errno(status); | |
946 | goto out_ilock; | |
947 | } | |
bc8230ee | 948 | down_write(&sb_dqopt(sb)->dqio_sem); |
9e33d69f JK |
949 | status = ocfs2_sync_dquot(dquot); |
950 | if (status < 0) { | |
951 | mlog_errno(status); | |
741e1289 | 952 | goto out_dlock; |
9e33d69f JK |
953 | } |
954 | /* Now write updated local dquot structure */ | |
741e1289 JK |
955 | status = ocfs2_local_write_dquot(dquot); |
956 | out_dlock: | |
bc8230ee | 957 | up_write(&sb_dqopt(sb)->dqio_sem); |
9e33d69f JK |
958 | ocfs2_commit_trans(osb, handle); |
959 | out_ilock: | |
960 | ocfs2_unlock_global_qf(oinfo, 1); | |
961 | out: | |
c1e8d35e TM |
962 | if (status) |
963 | mlog_errno(status); | |
9e33d69f JK |
964 | return status; |
965 | } | |
966 | ||
967 | /* This should happen only after set_dqinfo(). */ | |
968 | static int ocfs2_write_info(struct super_block *sb, int type) | |
969 | { | |
970 | handle_t *handle; | |
971 | int status = 0; | |
972 | struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv; | |
973 | ||
9e33d69f JK |
974 | status = ocfs2_lock_global_qf(oinfo, 1); |
975 | if (status < 0) | |
976 | goto out; | |
977 | handle = ocfs2_start_trans(OCFS2_SB(sb), OCFS2_QINFO_WRITE_CREDITS); | |
978 | if (IS_ERR(handle)) { | |
979 | status = PTR_ERR(handle); | |
980 | mlog_errno(status); | |
981 | goto out_ilock; | |
982 | } | |
983 | status = dquot_commit_info(sb, type); | |
984 | ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
985 | out_ilock: | |
986 | ocfs2_unlock_global_qf(oinfo, 1); | |
987 | out: | |
c1e8d35e TM |
988 | if (status) |
989 | mlog_errno(status); | |
9e33d69f JK |
990 | return status; |
991 | } | |
992 | ||
9e33d69f JK |
993 | static struct dquot *ocfs2_alloc_dquot(struct super_block *sb, int type) |
994 | { | |
995 | struct ocfs2_dquot *dquot = | |
996 | kmem_cache_zalloc(ocfs2_dquot_cachep, GFP_NOFS); | |
997 | ||
998 | if (!dquot) | |
999 | return NULL; | |
1000 | return &dquot->dq_dquot; | |
1001 | } | |
1002 | ||
1003 | static void ocfs2_destroy_dquot(struct dquot *dquot) | |
1004 | { | |
1005 | kmem_cache_free(ocfs2_dquot_cachep, dquot); | |
1006 | } | |
1007 | ||
61e225dc | 1008 | const struct dquot_operations ocfs2_quota_operations = { |
741e1289 | 1009 | /* We never make dquot dirty so .write_dquot is never called */ |
9e33d69f JK |
1010 | .acquire_dquot = ocfs2_acquire_dquot, |
1011 | .release_dquot = ocfs2_release_dquot, | |
1012 | .mark_dirty = ocfs2_mark_dquot_dirty, | |
1013 | .write_info = ocfs2_write_info, | |
1014 | .alloc_dquot = ocfs2_alloc_dquot, | |
1015 | .destroy_dquot = ocfs2_destroy_dquot, | |
5a9530e4 | 1016 | .get_next_id = ocfs2_get_next_id, |
9e33d69f | 1017 | }; |