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Commit | Line | Data |
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00e5a55c BS |
1 | From: Jan Kara <jack@suse.cz> |
2 | References: fate#302681 | |
3 | Subject: [PATCH 24/28] ocfs2: Implementation of local and global quota file handling | |
4 | Patch-mainline: 2.6.29? | |
5 | ||
6 | For each quota type each node has local quota file. In this file it stores | |
7 | changes users have made to disk usage via this node. Once in a while this | |
8 | information is synced to global file (and thus with other nodes) so that | |
9 | limits enforcement at least aproximately works. | |
10 | ||
11 | Global quota files contain all the information about usage and limits. It's | |
12 | mostly handled by the generic VFS code (which implements a trie of structures | |
13 | inside a quota file). We only have to provide functions to convert structures | |
14 | from on-disk format to in-memory one. We also have to provide wrappers for | |
15 | various quota functions starting transactions and acquiring necessary cluster | |
16 | locks before the actual IO is really started. | |
17 | ||
18 | Signed-off-by: Jan Kara <jack@suse.cz> | |
19 | --- | |
20 | fs/ocfs2/Makefile | 2 + | |
21 | fs/ocfs2/cluster/masklog.h | 1 + | |
22 | fs/ocfs2/dlmglue.c | 137 +++++++ | |
23 | fs/ocfs2/dlmglue.h | 17 + | |
24 | fs/ocfs2/file.c | 6 +- | |
25 | fs/ocfs2/file.h | 4 + | |
26 | fs/ocfs2/journal.h | 15 + | |
27 | fs/ocfs2/ocfs2_fs.h | 95 +++++ | |
28 | fs/ocfs2/ocfs2_lockid.h | 5 + | |
29 | fs/ocfs2/quota.h | 94 +++++ | |
30 | fs/ocfs2/quota_global.c | 855 ++++++++++++++++++++++++++++++++++++++++++++ | |
31 | fs/ocfs2/quota_local.c | 846 +++++++++++++++++++++++++++++++++++++++++++ | |
32 | fs/ocfs2/super.c | 35 ++- | |
33 | 13 files changed, 2107 insertions(+), 5 deletions(-) | |
34 | create mode 100644 fs/ocfs2/quota.h | |
35 | create mode 100644 fs/ocfs2/quota_global.c | |
36 | create mode 100644 fs/ocfs2/quota_local.c | |
37 | ||
38 | Index: linux-2.6.27-ocfs2/fs/ocfs2/Makefile | |
39 | =================================================================== | |
40 | --- linux-2.6.27-ocfs2.orig/fs/ocfs2/Makefile | |
41 | +++ linux-2.6.27-ocfs2/fs/ocfs2/Makefile | |
42 | @@ -35,6 +35,8 @@ ocfs2-objs := \ | |
43 | sysfile.o \ | |
44 | uptodate.o \ | |
45 | ver.o \ | |
46 | + quota_local.o \ | |
47 | + quota_global.o \ | |
48 | xattr.o | |
49 | ||
50 | ifeq ($(CONFIG_OCFS2_FS_POSIX_ACL),y) | |
51 | Index: linux-2.6.27-ocfs2/fs/ocfs2/cluster/masklog.h | |
52 | =================================================================== | |
53 | --- linux-2.6.27-ocfs2.orig/fs/ocfs2/cluster/masklog.h | |
54 | +++ linux-2.6.27-ocfs2/fs/ocfs2/cluster/masklog.h | |
55 | @@ -113,6 +113,7 @@ | |
56 | #define ML_QUORUM 0x0000000008000000ULL /* net connection quorum */ | |
57 | #define ML_EXPORT 0x0000000010000000ULL /* ocfs2 export operations */ | |
58 | #define ML_XATTR 0x0000000020000000ULL /* ocfs2 extended attributes */ | |
59 | +#define ML_QUOTA 0x0000000040000000ULL /* ocfs2 quota operations */ | |
60 | /* bits that are infrequently given and frequently matched in the high word */ | |
61 | #define ML_ERROR 0x0000000100000000ULL /* sent to KERN_ERR */ | |
62 | #define ML_NOTICE 0x0000000200000000ULL /* setn to KERN_NOTICE */ | |
63 | Index: linux-2.6.27-ocfs2/fs/ocfs2/dlmglue.c | |
64 | =================================================================== | |
65 | --- linux-2.6.27-ocfs2.orig/fs/ocfs2/dlmglue.c | |
66 | +++ linux-2.6.27-ocfs2/fs/ocfs2/dlmglue.c | |
67 | @@ -32,6 +32,7 @@ | |
68 | #include <linux/debugfs.h> | |
69 | #include <linux/seq_file.h> | |
70 | #include <linux/time.h> | |
71 | +#include <linux/quotaops.h> | |
72 | ||
73 | #define MLOG_MASK_PREFIX ML_DLM_GLUE | |
74 | #include <cluster/masklog.h> | |
75 | @@ -51,6 +52,7 @@ | |
76 | #include "slot_map.h" | |
77 | #include "super.h" | |
78 | #include "uptodate.h" | |
79 | +#include "quota.h" | |
80 | ||
81 | #include "buffer_head_io.h" | |
82 | ||
83 | @@ -68,6 +70,7 @@ struct ocfs2_mask_waiter { | |
84 | static struct ocfs2_super *ocfs2_get_dentry_osb(struct ocfs2_lock_res *lockres); | |
85 | static struct ocfs2_super *ocfs2_get_inode_osb(struct ocfs2_lock_res *lockres); | |
86 | static struct ocfs2_super *ocfs2_get_file_osb(struct ocfs2_lock_res *lockres); | |
87 | +static struct ocfs2_super *ocfs2_get_qinfo_osb(struct ocfs2_lock_res *lockres); | |
88 | ||
89 | /* | |
90 | * Return value from ->downconvert_worker functions. | |
91 | @@ -102,6 +105,7 @@ static int ocfs2_dentry_convert_worker(s | |
92 | static void ocfs2_dentry_post_unlock(struct ocfs2_super *osb, | |
93 | struct ocfs2_lock_res *lockres); | |
94 | ||
95 | +static void ocfs2_set_qinfo_lvb(struct ocfs2_lock_res *lockres); | |
96 | ||
97 | #define mlog_meta_lvb(__level, __lockres) ocfs2_dump_meta_lvb_info(__level, __PRETTY_FUNCTION__, __LINE__, __lockres) | |
98 | ||
99 | @@ -258,6 +262,12 @@ static struct ocfs2_lock_res_ops ocfs2_f | |
100 | .flags = 0, | |
101 | }; | |
102 | ||
103 | +static struct ocfs2_lock_res_ops ocfs2_qinfo_lops = { | |
104 | + .set_lvb = ocfs2_set_qinfo_lvb, | |
105 | + .get_osb = ocfs2_get_qinfo_osb, | |
106 | + .flags = LOCK_TYPE_REQUIRES_REFRESH | LOCK_TYPE_USES_LVB, | |
107 | +}; | |
108 | + | |
109 | static inline int ocfs2_is_inode_lock(struct ocfs2_lock_res *lockres) | |
110 | { | |
111 | return lockres->l_type == OCFS2_LOCK_TYPE_META || | |
112 | @@ -279,6 +289,13 @@ static inline struct ocfs2_dentry_lock * | |
113 | return (struct ocfs2_dentry_lock *)lockres->l_priv; | |
114 | } | |
115 | ||
116 | +static inline struct ocfs2_mem_dqinfo *ocfs2_lock_res_qinfo(struct ocfs2_lock_res *lockres) | |
117 | +{ | |
118 | + BUG_ON(lockres->l_type != OCFS2_LOCK_TYPE_QINFO); | |
119 | + | |
120 | + return (struct ocfs2_mem_dqinfo *)lockres->l_priv; | |
121 | +} | |
122 | + | |
123 | static inline struct ocfs2_super *ocfs2_get_lockres_osb(struct ocfs2_lock_res *lockres) | |
124 | { | |
125 | if (lockres->l_ops->get_osb) | |
126 | @@ -507,6 +524,13 @@ static struct ocfs2_super *ocfs2_get_ino | |
127 | return OCFS2_SB(inode->i_sb); | |
128 | } | |
129 | ||
130 | +static struct ocfs2_super *ocfs2_get_qinfo_osb(struct ocfs2_lock_res *lockres) | |
131 | +{ | |
132 | + struct ocfs2_mem_dqinfo *info = lockres->l_priv; | |
133 | + | |
134 | + return OCFS2_SB(info->dqi_gi.dqi_sb); | |
135 | +} | |
136 | + | |
137 | static struct ocfs2_super *ocfs2_get_file_osb(struct ocfs2_lock_res *lockres) | |
138 | { | |
139 | struct ocfs2_file_private *fp = lockres->l_priv; | |
140 | @@ -609,6 +633,17 @@ void ocfs2_file_lock_res_init(struct ocf | |
141 | lockres->l_flags |= OCFS2_LOCK_NOCACHE; | |
142 | } | |
143 | ||
144 | +void ocfs2_qinfo_lock_res_init(struct ocfs2_lock_res *lockres, | |
145 | + struct ocfs2_mem_dqinfo *info) | |
146 | +{ | |
147 | + ocfs2_lock_res_init_once(lockres); | |
148 | + ocfs2_build_lock_name(OCFS2_LOCK_TYPE_QINFO, info->dqi_gi.dqi_type, | |
149 | + 0, lockres->l_name); | |
150 | + ocfs2_lock_res_init_common(OCFS2_SB(info->dqi_gi.dqi_sb), lockres, | |
151 | + OCFS2_LOCK_TYPE_QINFO, &ocfs2_qinfo_lops, | |
152 | + info); | |
153 | +} | |
154 | + | |
155 | void ocfs2_lock_res_free(struct ocfs2_lock_res *res) | |
156 | { | |
157 | mlog_entry_void(); | |
158 | @@ -3449,6 +3484,108 @@ static int ocfs2_dentry_convert_worker(s | |
159 | return UNBLOCK_CONTINUE_POST; | |
160 | } | |
161 | ||
162 | +static void ocfs2_set_qinfo_lvb(struct ocfs2_lock_res *lockres) | |
163 | +{ | |
164 | + struct ocfs2_qinfo_lvb *lvb; | |
165 | + struct ocfs2_mem_dqinfo *oinfo = ocfs2_lock_res_qinfo(lockres); | |
166 | + struct mem_dqinfo *info = sb_dqinfo(oinfo->dqi_gi.dqi_sb, | |
167 | + oinfo->dqi_gi.dqi_type); | |
168 | + | |
169 | + mlog_entry_void(); | |
170 | + | |
171 | + lvb = (struct ocfs2_qinfo_lvb *)ocfs2_dlm_lvb(&lockres->l_lksb); | |
172 | + lvb->lvb_version = OCFS2_LVB_VERSION; | |
173 | + lvb->lvb_bgrace = cpu_to_be32(info->dqi_bgrace); | |
174 | + lvb->lvb_igrace = cpu_to_be32(info->dqi_igrace); | |
175 | + lvb->lvb_syncms = cpu_to_be32(oinfo->dqi_syncms); | |
176 | + lvb->lvb_blocks = cpu_to_be32(oinfo->dqi_gi.dqi_blocks); | |
177 | + lvb->lvb_free_blk = cpu_to_be32(oinfo->dqi_gi.dqi_free_blk); | |
178 | + lvb->lvb_free_entry = cpu_to_be32(oinfo->dqi_gi.dqi_free_entry); | |
179 | + | |
180 | + mlog_exit_void(); | |
181 | +} | |
182 | + | |
183 | +void ocfs2_qinfo_unlock(struct ocfs2_mem_dqinfo *oinfo, int ex) | |
184 | +{ | |
185 | + struct ocfs2_lock_res *lockres = &oinfo->dqi_gqlock; | |
186 | + struct ocfs2_super *osb = OCFS2_SB(oinfo->dqi_gi.dqi_sb); | |
187 | + int level = ex ? DLM_LOCK_EX : DLM_LOCK_PR; | |
188 | + | |
189 | + mlog_entry_void(); | |
190 | + if (!ocfs2_is_hard_readonly(osb) && !ocfs2_mount_local(osb)) | |
191 | + ocfs2_cluster_unlock(osb, lockres, level); | |
192 | + mlog_exit_void(); | |
193 | +} | |
194 | + | |
195 | +/* Lock quota info, this function expects at least shared lock on the quota file | |
196 | + * so that we can safely refresh quota info from disk. */ | |
197 | +int ocfs2_qinfo_lock(struct ocfs2_mem_dqinfo *oinfo, int ex) | |
198 | +{ | |
199 | + struct mem_dqinfo *info = sb_dqinfo(oinfo->dqi_gi.dqi_sb, | |
200 | + oinfo->dqi_gi.dqi_type); | |
201 | + struct ocfs2_lock_res *lockres = &oinfo->dqi_gqlock; | |
202 | + struct ocfs2_super *osb = OCFS2_SB(oinfo->dqi_gi.dqi_sb); | |
203 | + struct ocfs2_qinfo_lvb *lvb; | |
204 | + int level = ex ? DLM_LOCK_EX : DLM_LOCK_PR; | |
205 | + int status = 0; | |
206 | + struct buffer_head *bh; | |
207 | + struct ocfs2_global_disk_dqinfo *gdinfo; | |
208 | + | |
209 | + mlog_entry_void(); | |
210 | + | |
211 | + /* We'll allow faking a readonly metadata lock for | |
212 | + * rodevices. */ | |
213 | + if (ocfs2_is_hard_readonly(osb)) { | |
214 | + if (ex) | |
215 | + status = -EROFS; | |
216 | + goto bail; | |
217 | + } | |
218 | + if (ocfs2_mount_local(osb)) | |
219 | + goto bail; | |
220 | + | |
221 | + status = ocfs2_cluster_lock(osb, lockres, level, 0, 0); | |
222 | + if (status < 0) { | |
223 | + mlog_errno(status); | |
224 | + goto bail; | |
225 | + } | |
226 | + if (!ocfs2_should_refresh_lock_res(lockres)) | |
227 | + goto bail; | |
228 | + /* OK, we have the lock but we need to refresh the quota info */ | |
229 | + lvb = ocfs2_dlm_lvb(&lockres->l_lksb); | |
230 | + if (lvb->lvb_version == OCFS2_LVB_VERSION) { | |
231 | + info->dqi_bgrace = be32_to_cpu(lvb->lvb_bgrace); | |
232 | + info->dqi_igrace = be32_to_cpu(lvb->lvb_igrace); | |
233 | + oinfo->dqi_syncms = be32_to_cpu(lvb->lvb_syncms); | |
234 | + oinfo->dqi_gi.dqi_blocks = be32_to_cpu(lvb->lvb_blocks); | |
235 | + oinfo->dqi_gi.dqi_free_blk = be32_to_cpu(lvb->lvb_free_blk); | |
236 | + oinfo->dqi_gi.dqi_free_entry = | |
237 | + be32_to_cpu(lvb->lvb_free_entry); | |
238 | + } else { | |
239 | + bh = ocfs2_bread(oinfo->dqi_gqinode, 0, &status, 0); | |
240 | + if (!bh) { | |
241 | + ocfs2_qinfo_unlock(oinfo, ex); | |
242 | + mlog_errno(status); | |
243 | + goto bail_refresh; | |
244 | + } | |
245 | + gdinfo = (struct ocfs2_global_disk_dqinfo *) | |
246 | + (bh->b_data + OCFS2_GLOBAL_INFO_OFF); | |
247 | + info->dqi_bgrace = le32_to_cpu(gdinfo->dqi_bgrace); | |
248 | + info->dqi_igrace = le32_to_cpu(gdinfo->dqi_igrace); | |
249 | + oinfo->dqi_syncms = le32_to_cpu(gdinfo->dqi_syncms); | |
250 | + oinfo->dqi_gi.dqi_blocks = le32_to_cpu(gdinfo->dqi_blocks); | |
251 | + oinfo->dqi_gi.dqi_free_blk = le32_to_cpu(gdinfo->dqi_free_blk); | |
252 | + oinfo->dqi_gi.dqi_free_entry = | |
253 | + le32_to_cpu(gdinfo->dqi_free_entry); | |
254 | + brelse(bh); | |
255 | + ocfs2_track_lock_refresh(lockres); | |
256 | + } | |
257 | +bail_refresh: | |
258 | + ocfs2_complete_lock_res_refresh(lockres, status); | |
259 | +bail: | |
260 | + mlog_exit(status); | |
261 | + return status; | |
262 | +} | |
263 | + | |
264 | /* | |
265 | * This is the filesystem locking protocol. It provides the lock handling | |
266 | * hooks for the underlying DLM. It has a maximum version number. | |
267 | Index: linux-2.6.27-ocfs2/fs/ocfs2/dlmglue.h | |
268 | =================================================================== | |
269 | --- linux-2.6.27-ocfs2.orig/fs/ocfs2/dlmglue.h | |
270 | +++ linux-2.6.27-ocfs2/fs/ocfs2/dlmglue.h | |
271 | @@ -49,6 +49,17 @@ struct ocfs2_meta_lvb { | |
272 | __be32 lvb_reserved2; | |
273 | }; | |
274 | ||
275 | +struct ocfs2_qinfo_lvb { | |
276 | + __u8 lvb_version; | |
277 | + __u8 lvb_reserved[3]; | |
278 | + __be32 lvb_bgrace; | |
279 | + __be32 lvb_igrace; | |
280 | + __be32 lvb_syncms; | |
281 | + __be32 lvb_blocks; | |
282 | + __be32 lvb_free_blk; | |
283 | + __be32 lvb_free_entry; | |
284 | +}; | |
285 | + | |
286 | /* ocfs2_inode_lock_full() 'arg_flags' flags */ | |
287 | /* don't wait on recovery. */ | |
288 | #define OCFS2_META_LOCK_RECOVERY (0x01) | |
289 | @@ -69,6 +80,9 @@ void ocfs2_dentry_lock_res_init(struct o | |
290 | struct ocfs2_file_private; | |
291 | void ocfs2_file_lock_res_init(struct ocfs2_lock_res *lockres, | |
292 | struct ocfs2_file_private *fp); | |
293 | +struct ocfs2_mem_dqinfo; | |
294 | +void ocfs2_qinfo_lock_res_init(struct ocfs2_lock_res *lockres, | |
295 | + struct ocfs2_mem_dqinfo *info); | |
296 | void ocfs2_lock_res_free(struct ocfs2_lock_res *res); | |
297 | int ocfs2_create_new_inode_locks(struct inode *inode); | |
298 | int ocfs2_drop_inode_locks(struct inode *inode); | |
299 | @@ -103,6 +117,9 @@ int ocfs2_dentry_lock(struct dentry *den | |
300 | void ocfs2_dentry_unlock(struct dentry *dentry, int ex); | |
301 | int ocfs2_file_lock(struct file *file, int ex, int trylock); | |
302 | void ocfs2_file_unlock(struct file *file); | |
303 | +int ocfs2_qinfo_lock(struct ocfs2_mem_dqinfo *oinfo, int ex); | |
304 | +void ocfs2_qinfo_unlock(struct ocfs2_mem_dqinfo *oinfo, int ex); | |
305 | + | |
306 | ||
307 | void ocfs2_mark_lockres_freeing(struct ocfs2_lock_res *lockres); | |
308 | void ocfs2_simple_drop_lockres(struct ocfs2_super *osb, | |
309 | Index: linux-2.6.27-ocfs2/fs/ocfs2/file.c | |
310 | =================================================================== | |
311 | --- linux-2.6.27-ocfs2.orig/fs/ocfs2/file.c | |
312 | +++ linux-2.6.27-ocfs2/fs/ocfs2/file.c | |
313 | @@ -304,9 +304,9 @@ bail: | |
314 | return status; | |
315 | } | |
316 | ||
317 | -static int ocfs2_simple_size_update(struct inode *inode, | |
318 | - struct buffer_head *di_bh, | |
319 | - u64 new_i_size) | |
320 | +int ocfs2_simple_size_update(struct inode *inode, | |
321 | + struct buffer_head *di_bh, | |
322 | + u64 new_i_size) | |
323 | { | |
324 | int ret; | |
325 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
326 | Index: linux-2.6.27-ocfs2/fs/ocfs2/file.h | |
327 | =================================================================== | |
328 | --- linux-2.6.27-ocfs2.orig/fs/ocfs2/file.h | |
329 | +++ linux-2.6.27-ocfs2/fs/ocfs2/file.h | |
330 | @@ -51,6 +51,9 @@ int ocfs2_add_inode_data(struct ocfs2_su | |
331 | struct ocfs2_alloc_context *data_ac, | |
332 | struct ocfs2_alloc_context *meta_ac, | |
333 | enum ocfs2_alloc_restarted *reason_ret); | |
334 | +int ocfs2_simple_size_update(struct inode *inode, | |
335 | + struct buffer_head *di_bh, | |
336 | + u64 new_i_size); | |
337 | int ocfs2_extend_no_holes(struct inode *inode, u64 new_i_size, | |
338 | u64 zero_to); | |
339 | int ocfs2_setattr(struct dentry *dentry, struct iattr *attr); | |
340 | Index: linux-2.6.27-ocfs2/fs/ocfs2/journal.h | |
341 | =================================================================== | |
342 | --- linux-2.6.27-ocfs2.orig/fs/ocfs2/journal.h | |
343 | +++ linux-2.6.27-ocfs2/fs/ocfs2/journal.h | |
344 | @@ -357,6 +357,21 @@ int ocfs2_journal_dirty | |
345 | + OCFS2_INODE_UPDATE_CREDITS \ | |
346 | + OCFS2_XATTR_BLOCK_UPDATE_CREDITS) | |
347 | ||
348 | +/* global quotafile inode update, data block */ | |
349 | +#define OCFS2_QINFO_WRITE_CREDITS (OCFS2_INODE_UPDATE_CREDITS + 1) | |
350 | + | |
351 | +/* | |
352 | + * The two writes below can accidentally see global info dirty due | |
353 | + * to set_info() quotactl so make them prepared for the writes. | |
354 | + */ | |
355 | +/* quota data block, global info */ | |
356 | +/* Write to local quota file */ | |
357 | +#define OCFS2_QWRITE_CREDITS (OCFS2_QINFO_WRITE_CREDITS + 1) | |
358 | + | |
359 | +/* global quota data block, local quota data block, global quota inode, | |
360 | + * global quota info */ | |
361 | +#define OCFS2_QSYNC_CREDITS (OCFS2_INODE_UPDATE_CREDITS + 3) | |
362 | + | |
363 | /* | |
364 | * Please note that the caller must make sure that root_el is the root | |
365 | * of extent tree. So for an inode, it should be &fe->id2.i_list. Otherwise | |
366 | Index: linux-2.6.27-ocfs2/fs/ocfs2/ocfs2_fs.h | |
367 | =================================================================== | |
368 | --- linux-2.6.27-ocfs2.orig/fs/ocfs2/ocfs2_fs.h | |
369 | +++ linux-2.6.27-ocfs2/fs/ocfs2/ocfs2_fs.h | |
370 | @@ -859,6 +859,101 @@ struct ocfs2_xattr_block { | |
371 | } xb_attrs; | |
372 | }; | |
373 | ||
374 | +/* | |
375 | + * On disk structures for global quota file | |
376 | + */ | |
377 | + | |
378 | +/* Magic numbers and known versions for global quota files */ | |
379 | +#define OCFS2_GLOBAL_QMAGICS {\ | |
380 | + 0x0cf52470, /* USRQUOTA */ \ | |
381 | + 0x0cf52471 /* GRPQUOTA */ \ | |
382 | +} | |
383 | + | |
384 | +#define OCFS2_GLOBAL_QVERSIONS {\ | |
385 | + 0, \ | |
386 | + 0, \ | |
387 | +} | |
388 | + | |
389 | +/* Generic header of all quota files */ | |
390 | +struct ocfs2_disk_dqheader { | |
391 | + __le32 dqh_magic; /* Magic number identifying file */ | |
392 | + __le32 dqh_version; /* Quota format version */ | |
393 | +}; | |
394 | + | |
395 | +#define OCFS2_GLOBAL_INFO_OFF (sizeof(struct ocfs2_disk_dqheader)) | |
396 | + | |
397 | +/* Information header of global quota file (immediately follows the generic | |
398 | + * header) */ | |
399 | +struct ocfs2_global_disk_dqinfo { | |
400 | +/*00*/ __le32 dqi_bgrace; | |
401 | + __le32 dqi_igrace; | |
402 | + __le32 dqi_syncms; | |
403 | + __le32 dqi_blocks; | |
404 | +/*10*/ __le32 dqi_free_blk; | |
405 | + __le32 dqi_free_entry; | |
406 | +}; | |
407 | + | |
408 | +/* Structure with global user / group information. We reserve some space | |
409 | + * for future use. */ | |
410 | +struct ocfs2_global_disk_dqblk { | |
411 | +/*00*/ __le32 dqb_id; /* ID the structure belongs to */ | |
412 | + __le32 dqb_use_count; /* Number of nodes having reference to this structure */ | |
413 | + __le64 dqb_ihardlimit; /* absolute limit on allocated inodes */ | |
414 | +/*10*/ __le64 dqb_isoftlimit; /* preferred inode limit */ | |
415 | + __le64 dqb_curinodes; /* current # allocated inodes */ | |
416 | +/*20*/ __le64 dqb_bhardlimit; /* absolute limit on disk space */ | |
417 | + __le64 dqb_bsoftlimit; /* preferred limit on disk space */ | |
418 | +/*30*/ __le64 dqb_curspace; /* current space occupied */ | |
419 | + __le64 dqb_btime; /* time limit for excessive disk use */ | |
420 | +/*40*/ __le64 dqb_itime; /* time limit for excessive inode use */ | |
421 | + __le64 dqb_pad1; | |
422 | +/*50*/ __le64 dqb_pad2; | |
423 | +}; | |
424 | + | |
425 | +/* | |
426 | + * On-disk structures for local quota file | |
427 | + */ | |
428 | + | |
429 | +/* Magic numbers and known versions for local quota files */ | |
430 | +#define OCFS2_LOCAL_QMAGICS {\ | |
431 | + 0x0cf524c0, /* USRQUOTA */ \ | |
432 | + 0x0cf524c1 /* GRPQUOTA */ \ | |
433 | +} | |
434 | + | |
435 | +#define OCFS2_LOCAL_QVERSIONS {\ | |
436 | + 0, \ | |
437 | + 0, \ | |
438 | +} | |
439 | + | |
440 | +/* Quota flags in dqinfo header */ | |
441 | +#define OLQF_CLEAN 0x0001 /* Quota file is empty (this should be after\ | |
442 | + * quota has been cleanly turned off) */ | |
443 | + | |
444 | +#define OCFS2_LOCAL_INFO_OFF (sizeof(struct ocfs2_disk_dqheader)) | |
445 | + | |
446 | +/* Information header of local quota file (immediately follows the generic | |
447 | + * header) */ | |
448 | +struct ocfs2_local_disk_dqinfo { | |
449 | + __le32 dqi_flags; /* Flags for quota file */ | |
450 | + __le32 dqi_chunks; /* Number of chunks of quota structures | |
451 | + * with a bitmap */ | |
452 | + __le32 dqi_blocks; /* Number of blocks allocated for quota file */ | |
453 | +}; | |
454 | + | |
455 | +/* Header of one chunk of a quota file */ | |
456 | +struct ocfs2_local_disk_chunk { | |
457 | + __le32 dqc_free; /* Number of free entries in the bitmap */ | |
458 | + u8 dqc_bitmap[0]; /* Bitmap of entries in the corresponding | |
459 | + * chunk of quota file */ | |
460 | +}; | |
461 | + | |
462 | +/* One entry in local quota file */ | |
463 | +struct ocfs2_local_disk_dqblk { | |
464 | +/*00*/ __le64 dqb_id; /* id this quota applies to */ | |
465 | + __le64 dqb_spacemod; /* Change in the amount of used space */ | |
466 | +/*10*/ __le64 dqb_inodemod; /* Change in the amount of used inodes */ | |
467 | +}; | |
468 | + | |
469 | #define OCFS2_XATTR_ENTRY_LOCAL 0x80 | |
470 | #define OCFS2_XATTR_TYPE_MASK 0x7F | |
471 | static inline void ocfs2_xattr_set_local(struct ocfs2_xattr_entry *xe, | |
472 | Index: linux-2.6.27-ocfs2/fs/ocfs2/ocfs2_lockid.h | |
473 | =================================================================== | |
474 | --- linux-2.6.27-ocfs2.orig/fs/ocfs2/ocfs2_lockid.h | |
475 | +++ linux-2.6.27-ocfs2/fs/ocfs2/ocfs2_lockid.h | |
476 | @@ -46,6 +46,7 @@ enum ocfs2_lock_type { | |
477 | OCFS2_LOCK_TYPE_DENTRY, | |
478 | OCFS2_LOCK_TYPE_OPEN, | |
479 | OCFS2_LOCK_TYPE_FLOCK, | |
480 | + OCFS2_LOCK_TYPE_QINFO, | |
481 | OCFS2_NUM_LOCK_TYPES | |
482 | }; | |
483 | ||
484 | @@ -77,6 +78,9 @@ static inline char ocfs2_lock_type_char( | |
485 | case OCFS2_LOCK_TYPE_FLOCK: | |
486 | c = 'F'; | |
487 | break; | |
488 | + case OCFS2_LOCK_TYPE_QINFO: | |
489 | + c = 'Q'; | |
490 | + break; | |
491 | default: | |
492 | c = '\0'; | |
493 | } | |
494 | @@ -95,6 +99,7 @@ static char *ocfs2_lock_type_strings[] = | |
495 | [OCFS2_LOCK_TYPE_DENTRY] = "Dentry", | |
496 | [OCFS2_LOCK_TYPE_OPEN] = "Open", | |
497 | [OCFS2_LOCK_TYPE_FLOCK] = "Flock", | |
498 | + [OCFS2_LOCK_TYPE_QINFO] = "Quota", | |
499 | }; | |
500 | ||
501 | static inline const char *ocfs2_lock_type_string(enum ocfs2_lock_type type) | |
502 | Index: linux-2.6.27-ocfs2/fs/ocfs2/quota.h | |
503 | =================================================================== | |
504 | --- /dev/null | |
505 | +++ linux-2.6.27-ocfs2/fs/ocfs2/quota.h | |
506 | @@ -0,0 +1,97 @@ | |
507 | +/* | |
508 | + * quota.h for OCFS2 | |
509 | + * | |
510 | + * On disk quota structures for local and global quota file, in-memory | |
511 | + * structures. | |
512 | + * | |
513 | + */ | |
514 | + | |
515 | +#ifndef _OCFS2_QUOTA_H | |
516 | +#define _OCFS2_QUOTA_H | |
517 | + | |
518 | +#include <linux/types.h> | |
519 | +#include <linux/slab.h> | |
520 | +#include <linux/quota.h> | |
521 | +#include <linux/list.h> | |
522 | +#include <linux/dqblk_qtree.h> | |
523 | + | |
524 | +#include "ocfs2.h" | |
525 | + | |
526 | +/* Common stuff */ | |
527 | +/* id number of quota format */ | |
528 | +#define QFMT_OCFS2 3 | |
529 | + | |
530 | +/* How many bytes to we reserve in each quota file block for our internal | |
531 | + * purposes? E.g. checksums... */ | |
532 | +#define OCFS2_QBLK_RESERVED_SPACE 8 | |
533 | + | |
534 | +/* | |
535 | + * In-memory structures | |
536 | + */ | |
537 | +struct ocfs2_dquot { | |
538 | + struct dquot dq_dquot; /* Generic VFS dquot */ | |
539 | + loff_t dq_local_off; /* Offset in the local quota file */ | |
540 | + struct ocfs2_quota_chunk *dq_chunk; /* Chunk dquot is in */ | |
541 | + unsigned int dq_use_count; /* Number of nodes having reference to this entry in global quota file */ | |
542 | + s64 dq_origspace; /* Last globally synced space usage */ | |
543 | + s64 dq_originodes; /* Last globally synced inode usage */ | |
544 | +}; | |
545 | + | |
546 | +/* In-memory structure with quota header information */ | |
547 | +struct ocfs2_mem_dqinfo { | |
548 | + unsigned int dqi_type; /* Quota type this structure describes */ | |
549 | + unsigned int dqi_chunks; /* Number of chunks in local quota file */ | |
550 | + unsigned int dqi_blocks; /* Number of blocks allocated for local quota file */ | |
551 | + unsigned int dqi_syncms; /* How often should we sync with other nodes */ | |
552 | + struct list_head dqi_chunk; /* List of chunks */ | |
553 | + struct inode *dqi_gqinode; /* Global quota file inode */ | |
554 | + struct ocfs2_lock_res dqi_gqlock; /* Lock protecting quota information structure */ | |
555 | + struct buffer_head *dqi_gqi_bh; /* Buffer head with global quota file inode - set only if inode lock is obtained */ | |
556 | + int dqi_gqi_count; /* Number of holders of dqi_gqi_bh */ | |
557 | + struct buffer_head *dqi_lqi_bh; /* Buffer head with local quota file inode */ | |
558 | + struct buffer_head *dqi_ibh; /* Buffer with information header */ | |
559 | + struct qtree_mem_dqinfo dqi_gi; /* Info about global file */ | |
560 | +}; | |
561 | + | |
562 | +static inline struct ocfs2_dquot *OCFS2_DQUOT(struct dquot *dquot) | |
563 | +{ | |
564 | + return container_of(dquot, struct ocfs2_dquot, dq_dquot); | |
565 | +} | |
566 | + | |
567 | +struct ocfs2_quota_chunk { | |
568 | + struct list_head qc_chunk; /* List of quotafile chunks */ | |
569 | + int qc_num; /* Number of quota chunk */ | |
570 | + struct buffer_head *qc_headerbh; /* Buffer head with chunk header */ | |
571 | +}; | |
572 | + | |
573 | +extern struct kmem_cache *ocfs2_dquot_cachep; | |
574 | +extern struct kmem_cache *ocfs2_qf_chunk_cachep; | |
575 | + | |
576 | +extern struct qtree_fmt_operations ocfs2_global_ops; | |
577 | + | |
578 | +ssize_t ocfs2_quota_read(struct super_block *sb, int type, char *data, | |
579 | + size_t len, loff_t off); | |
580 | +ssize_t ocfs2_quota_write(struct super_block *sb, int type, | |
581 | + const char *data, size_t len, loff_t off); | |
582 | +int ocfs2_global_read_info(struct super_block *sb, int type); | |
583 | +int ocfs2_global_write_info(struct super_block *sb, int type); | |
584 | +int ocfs2_global_read_dquot(struct dquot *dquot); | |
585 | +int __ocfs2_sync_dquot(struct dquot *dquot, int freeing); | |
586 | +static inline int ocfs2_sync_dquot(struct dquot *dquot) | |
587 | +{ | |
588 | + return __ocfs2_sync_dquot(dquot, 0); | |
589 | +} | |
590 | +static inline int ocfs2_global_release_dquot(struct dquot *dquot) | |
591 | +{ | |
592 | + return __ocfs2_sync_dquot(dquot, 1); | |
593 | +} | |
594 | + | |
595 | +int ocfs2_lock_global_qf(struct ocfs2_mem_dqinfo *oinfo, int ex); | |
596 | +void ocfs2_unlock_global_qf(struct ocfs2_mem_dqinfo *oinfo, int ex); | |
597 | + | |
598 | +int init_ocfs2_quota_format(void); | |
599 | +void exit_ocfs2_quota_format(void); | |
600 | + | |
601 | +extern struct dquot_operations ocfs2_quota_operations; | |
602 | + | |
603 | +#endif /* _OCFS2_QUOTA_H */ | |
604 | Index: linux-2.6.27-ocfs2/fs/ocfs2/quota_global.c | |
605 | =================================================================== | |
606 | --- /dev/null | |
607 | +++ linux-2.6.27-ocfs2/fs/ocfs2/quota_global.c | |
608 | @@ -0,0 +1,856 @@ | |
609 | +/* | |
610 | + * Implementation of operations over global quota file | |
611 | + */ | |
612 | +#include <linux/fs.h> | |
613 | +#include <linux/quota.h> | |
614 | +#include <linux/quotaops.h> | |
615 | +#include <linux/dqblk_qtree.h> | |
616 | + | |
617 | +#define MLOG_MASK_PREFIX ML_QUOTA | |
618 | +#include <cluster/masklog.h> | |
619 | + | |
620 | +#include "ocfs2_fs.h" | |
621 | +#include "ocfs2.h" | |
622 | +#include "alloc.h" | |
623 | +#include "inode.h" | |
624 | +#include "journal.h" | |
625 | +#include "file.h" | |
626 | +#include "sysfile.h" | |
627 | +#include "dlmglue.h" | |
628 | +#include "quota.h" | |
629 | + | |
630 | +static void ocfs2_global_disk2memdqb(struct dquot *dquot, void *dp) | |
631 | +{ | |
632 | + struct ocfs2_global_disk_dqblk *d = dp; | |
633 | + struct mem_dqblk *m = &dquot->dq_dqb; | |
634 | + | |
635 | + /* Update from disk only entries not set by the admin */ | |
636 | + if (!test_bit(DQ_LASTSET_B + QIF_ILIMITS_B, &dquot->dq_flags)) { | |
637 | + m->dqb_ihardlimit = le64_to_cpu(d->dqb_ihardlimit); | |
638 | + m->dqb_isoftlimit = le64_to_cpu(d->dqb_isoftlimit); | |
639 | + } | |
640 | + if (!test_bit(DQ_LASTSET_B + QIF_INODES_B, &dquot->dq_flags)) | |
641 | + m->dqb_curinodes = le64_to_cpu(d->dqb_curinodes); | |
642 | + if (!test_bit(DQ_LASTSET_B + QIF_BLIMITS_B, &dquot->dq_flags)) { | |
643 | + m->dqb_bhardlimit = le64_to_cpu(d->dqb_bhardlimit); | |
644 | + m->dqb_bsoftlimit = le64_to_cpu(d->dqb_bsoftlimit); | |
645 | + } | |
646 | + if (!test_bit(DQ_LASTSET_B + QIF_SPACE_B, &dquot->dq_flags)) | |
647 | + m->dqb_curspace = le64_to_cpu(d->dqb_curspace); | |
648 | + if (!test_bit(DQ_LASTSET_B + QIF_BTIME_B, &dquot->dq_flags)) | |
649 | + m->dqb_btime = le64_to_cpu(d->dqb_btime); | |
650 | + if (!test_bit(DQ_LASTSET_B + QIF_ITIME_B, &dquot->dq_flags)) | |
651 | + m->dqb_itime = le64_to_cpu(d->dqb_itime); | |
652 | + OCFS2_DQUOT(dquot)->dq_use_count = le32_to_cpu(d->dqb_use_count); | |
653 | +} | |
654 | + | |
655 | +static void ocfs2_global_mem2diskdqb(void *dp, struct dquot *dquot) | |
656 | +{ | |
657 | + struct ocfs2_global_disk_dqblk *d = dp; | |
658 | + struct mem_dqblk *m = &dquot->dq_dqb; | |
659 | + | |
660 | + d->dqb_id = cpu_to_le32(dquot->dq_id); | |
661 | + d->dqb_use_count = cpu_to_le32(OCFS2_DQUOT(dquot)->dq_use_count); | |
662 | + d->dqb_ihardlimit = cpu_to_le64(m->dqb_ihardlimit); | |
663 | + d->dqb_isoftlimit = cpu_to_le64(m->dqb_isoftlimit); | |
664 | + d->dqb_curinodes = cpu_to_le64(m->dqb_curinodes); | |
665 | + d->dqb_bhardlimit = cpu_to_le64(m->dqb_bhardlimit); | |
666 | + d->dqb_bsoftlimit = cpu_to_le64(m->dqb_bsoftlimit); | |
667 | + d->dqb_curspace = cpu_to_le64(m->dqb_curspace); | |
668 | + d->dqb_btime = cpu_to_le64(m->dqb_btime); | |
669 | + d->dqb_itime = cpu_to_le64(m->dqb_itime); | |
670 | + d->dqb_pad1 = d->dqb_pad2 = 0; | |
671 | +} | |
672 | + | |
673 | +static int ocfs2_global_is_id(void *dp, struct dquot *dquot) | |
674 | +{ | |
675 | + struct ocfs2_global_disk_dqblk *d = dp; | |
676 | + struct ocfs2_mem_dqinfo *oinfo = | |
677 | + sb_dqinfo(dquot->dq_sb, dquot->dq_type)->dqi_priv; | |
678 | + | |
679 | + if (qtree_entry_unused(&oinfo->dqi_gi, dp)) | |
680 | + return 0; | |
681 | + return le32_to_cpu(d->dqb_id) == dquot->dq_id; | |
682 | +} | |
683 | + | |
684 | +struct qtree_fmt_operations ocfs2_global_ops = { | |
685 | + .mem2disk_dqblk = ocfs2_global_mem2diskdqb, | |
686 | + .disk2mem_dqblk = ocfs2_global_disk2memdqb, | |
687 | + .is_id = ocfs2_global_is_id, | |
688 | +}; | |
689 | + | |
690 | +/* Read data from global quotafile - avoid pagecache and such because we cannot | |
691 | + * afford acquiring the locks... We use quota cluster lock to serialize | |
692 | + * operations. Caller is responsible for acquiring it. */ | |
693 | +ssize_t ocfs2_quota_read(struct super_block *sb, int type, char *data, | |
694 | + size_t len, loff_t off) | |
695 | +{ | |
696 | + struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv; | |
697 | + struct inode *gqinode = oinfo->dqi_gqinode; | |
698 | + loff_t i_size = i_size_read(gqinode); | |
699 | + int offset = off & (sb->s_blocksize - 1); | |
700 | + sector_t blk = off >> sb->s_blocksize_bits; | |
701 | + int err = 0; | |
702 | + struct buffer_head *bh; | |
703 | + size_t toread, tocopy; | |
704 | + | |
705 | + if (off > i_size) | |
706 | + return 0; | |
707 | + if (off + len > i_size) | |
708 | + len = i_size - off; | |
709 | + toread = len; | |
710 | + while (toread > 0) { | |
711 | + tocopy = min(sb->s_blocksize - offset, toread); | |
712 | + bh = ocfs2_bread(gqinode, blk, &err, 0); | |
713 | + if (!bh) { | |
714 | + mlog_errno(err); | |
715 | + return err; | |
716 | + } | |
717 | + memcpy(data, bh->b_data + offset, tocopy); | |
718 | + brelse(bh); | |
719 | + offset = 0; | |
720 | + toread -= tocopy; | |
721 | + data += tocopy; | |
722 | + blk++; | |
723 | + } | |
724 | + return len; | |
725 | +} | |
726 | + | |
727 | +/* Write to quotafile (we know the transaction is already started and has | |
728 | + * enough credits) */ | |
729 | +ssize_t ocfs2_quota_write(struct super_block *sb, int type, | |
730 | + const char *data, size_t len, loff_t off) | |
731 | +{ | |
732 | + struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
733 | + struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
734 | + struct inode *gqinode = oinfo->dqi_gqinode; | |
735 | + int offset = off & (sb->s_blocksize - 1); | |
736 | + sector_t blk = off >> sb->s_blocksize_bits; | |
737 | + int err = 0; | |
738 | + struct buffer_head *bh; | |
739 | + handle_t *handle = journal_current_handle(); | |
740 | + size_t tocopy, towrite = len; | |
741 | + | |
742 | + if (!handle) { | |
743 | + mlog(ML_ERROR, "Quota write (off=%llu, len=%llu) cancelled " | |
744 | + "because transaction was not started.\n", | |
745 | + (unsigned long long)off, (unsigned long long)len); | |
746 | + return -EIO; | |
747 | + } | |
748 | + mutex_lock_nested(&gqinode->i_mutex, I_MUTEX_QUOTA); | |
749 | + if (gqinode->i_size < off + len) { | |
750 | + down_write(&OCFS2_I(gqinode)->ip_alloc_sem); | |
751 | + err = ocfs2_extend_no_holes(gqinode, off + len, off); | |
752 | + up_write(&OCFS2_I(gqinode)->ip_alloc_sem); | |
753 | + if (err < 0) | |
754 | + goto out; | |
755 | + err = ocfs2_simple_size_update(gqinode, | |
756 | + oinfo->dqi_gqi_bh, | |
757 | + off + len); | |
758 | + if (err < 0) | |
759 | + goto out; | |
760 | + } | |
761 | + WARN_ON(off >> sb->s_blocksize_bits != \ | |
762 | + (off + len) >> sb->s_blocksize_bits); | |
763 | + WARN_ON(((off + len) & ((1 << sb->s_blocksize_bits) - 1)) > | |
764 | + sb->s_blocksize - OCFS2_QBLK_RESERVED_SPACE); | |
765 | + for (towrite = len; towrite > 0; towrite -= tocopy) { | |
766 | + tocopy = min(towrite, sb->s_blocksize - offset); | |
767 | + bh = ocfs2_bread(gqinode, blk, &err, 0); | |
768 | + if (!bh) { | |
769 | + mlog_errno(err); | |
770 | + return err; | |
771 | + } | |
772 | + err = ocfs2_journal_access(handle, gqinode, bh, | |
773 | + OCFS2_JOURNAL_ACCESS_WRITE); | |
774 | + if (err < 0) { | |
775 | + brelse(bh); | |
776 | + goto out; | |
777 | + } | |
778 | + lock_buffer(bh); | |
779 | + memcpy(bh->b_data + offset, data, tocopy); | |
780 | + flush_dcache_page(bh->b_page); | |
781 | + unlock_buffer(bh); | |
782 | + err = ocfs2_journal_dirty(handle, bh); | |
783 | + brelse(bh); | |
784 | + if (err < 0) | |
785 | + goto out; | |
786 | + offset = 0; | |
787 | + data += tocopy; | |
788 | + blk++; | |
789 | + } | |
790 | +out: | |
791 | + /* Nothing written? */ | |
792 | + if (len == towrite) { | |
793 | + mutex_unlock(&gqinode->i_mutex); | |
794 | + mlog_errno(err); | |
795 | + return err; | |
796 | + } | |
797 | + gqinode->i_version++; | |
798 | + ocfs2_mark_inode_dirty(handle, gqinode, oinfo->dqi_gqi_bh); | |
799 | + mutex_unlock(&gqinode->i_mutex); | |
800 | + return len - towrite; | |
801 | +} | |
802 | + | |
803 | +int ocfs2_lock_global_qf(struct ocfs2_mem_dqinfo *oinfo, int ex) | |
804 | +{ | |
805 | + int status; | |
806 | + struct buffer_head *bh = NULL; | |
807 | + | |
808 | + status = ocfs2_inode_lock(oinfo->dqi_gqinode, &bh, ex); | |
809 | + if (status < 0) | |
810 | + return status; | |
811 | + spin_lock(&dq_data_lock); | |
812 | + if (!oinfo->dqi_gqi_count++) | |
813 | + oinfo->dqi_gqi_bh = bh; | |
814 | + else | |
815 | + WARN_ON(bh != oinfo->dqi_gqi_bh); | |
816 | + spin_unlock(&dq_data_lock); | |
817 | + return 0; | |
818 | +} | |
819 | + | |
820 | +void ocfs2_unlock_global_qf(struct ocfs2_mem_dqinfo *oinfo, int ex) | |
821 | +{ | |
822 | + ocfs2_inode_unlock(oinfo->dqi_gqinode, ex); | |
823 | + brelse(oinfo->dqi_gqi_bh); | |
824 | + spin_lock(&dq_data_lock); | |
825 | + if (!--oinfo->dqi_gqi_count) | |
826 | + oinfo->dqi_gqi_bh = NULL; | |
827 | + spin_unlock(&dq_data_lock); | |
828 | +} | |
829 | + | |
830 | +/* Read information header from global quota file */ | |
831 | +int ocfs2_global_read_info(struct super_block *sb, int type) | |
832 | +{ | |
833 | + struct inode *gqinode = NULL; | |
834 | + unsigned int ino[MAXQUOTAS] = { USER_QUOTA_SYSTEM_INODE, | |
835 | + GROUP_QUOTA_SYSTEM_INODE }; | |
836 | + struct ocfs2_global_disk_dqinfo dinfo; | |
837 | + struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
838 | + struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
839 | + int status; | |
840 | + | |
841 | + mlog_entry_void(); | |
842 | + | |
843 | + /* Read global header */ | |
844 | + gqinode = ocfs2_get_system_file_inode(OCFS2_SB(sb), ino[type], | |
845 | + OCFS2_INVALID_SLOT); | |
846 | + if (!gqinode) { | |
847 | + mlog(ML_ERROR, "failed to get global quota inode (type=%d)\n", | |
848 | + type); | |
849 | + status = -EINVAL; | |
850 | + goto out_err; | |
851 | + } | |
852 | + oinfo->dqi_gi.dqi_sb = sb; | |
853 | + oinfo->dqi_gi.dqi_type = type; | |
854 | + ocfs2_qinfo_lock_res_init(&oinfo->dqi_gqlock, oinfo); | |
855 | + oinfo->dqi_gi.dqi_entry_size = sizeof(struct ocfs2_global_disk_dqblk); | |
856 | + oinfo->dqi_gi.dqi_ops = &ocfs2_global_ops; | |
857 | + oinfo->dqi_gqi_bh = NULL; | |
858 | + oinfo->dqi_gqi_count = 0; | |
859 | + oinfo->dqi_gqinode = gqinode; | |
860 | + status = ocfs2_lock_global_qf(oinfo, 0); | |
861 | + if (status < 0) { | |
862 | + mlog_errno(status); | |
863 | + goto out_err; | |
864 | + } | |
865 | + status = sb->s_op->quota_read(sb, type, (char *)&dinfo, | |
866 | + sizeof(struct ocfs2_global_disk_dqinfo), | |
867 | + OCFS2_GLOBAL_INFO_OFF); | |
868 | + ocfs2_unlock_global_qf(oinfo, 0); | |
869 | + if (status != sizeof(struct ocfs2_global_disk_dqinfo)) { | |
870 | + mlog(ML_ERROR, "Cannot read global quota info (%d).\n", | |
871 | + status); | |
872 | + if (status >= 0) | |
873 | + status = -EIO; | |
874 | + mlog_errno(status); | |
875 | + goto out_err; | |
876 | + } | |
877 | + info->dqi_bgrace = le32_to_cpu(dinfo.dqi_bgrace); | |
878 | + info->dqi_igrace = le32_to_cpu(dinfo.dqi_igrace); | |
879 | + oinfo->dqi_syncms = le32_to_cpu(dinfo.dqi_syncms); | |
880 | + oinfo->dqi_gi.dqi_blocks = le32_to_cpu(dinfo.dqi_blocks); | |
881 | + oinfo->dqi_gi.dqi_free_blk = le32_to_cpu(dinfo.dqi_free_blk); | |
882 | + oinfo->dqi_gi.dqi_free_entry = le32_to_cpu(dinfo.dqi_free_entry); | |
883 | + oinfo->dqi_gi.dqi_blocksize_bits = sb->s_blocksize_bits; | |
884 | + oinfo->dqi_gi.dqi_usable_bs = sb->s_blocksize - | |
885 | + OCFS2_QBLK_RESERVED_SPACE; | |
886 | + oinfo->dqi_gi.dqi_qtree_depth = qtree_depth(&oinfo->dqi_gi); | |
887 | +out_err: | |
888 | + mlog_exit(status); | |
889 | + return status; | |
890 | +} | |
891 | + | |
892 | +/* Write information to global quota file. Expects exlusive lock on quota | |
893 | + * file inode and quota info */ | |
894 | +static int __ocfs2_global_write_info(struct super_block *sb, int type) | |
895 | +{ | |
896 | + struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
897 | + struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
898 | + struct ocfs2_global_disk_dqinfo dinfo; | |
899 | + ssize_t size; | |
900 | + | |
901 | + spin_lock(&dq_data_lock); | |
902 | + info->dqi_flags &= ~DQF_INFO_DIRTY; | |
903 | + dinfo.dqi_bgrace = cpu_to_le32(info->dqi_bgrace); | |
904 | + dinfo.dqi_igrace = cpu_to_le32(info->dqi_igrace); | |
905 | + spin_unlock(&dq_data_lock); | |
906 | + dinfo.dqi_syncms = cpu_to_le32(oinfo->dqi_syncms); | |
907 | + dinfo.dqi_blocks = cpu_to_le32(oinfo->dqi_gi.dqi_blocks); | |
908 | + dinfo.dqi_free_blk = cpu_to_le32(oinfo->dqi_gi.dqi_free_blk); | |
909 | + dinfo.dqi_free_entry = cpu_to_le32(oinfo->dqi_gi.dqi_free_entry); | |
910 | + size = sb->s_op->quota_write(sb, type, (char *)&dinfo, | |
911 | + sizeof(struct ocfs2_global_disk_dqinfo), | |
912 | + OCFS2_GLOBAL_INFO_OFF); | |
913 | + if (size != sizeof(struct ocfs2_global_disk_dqinfo)) { | |
914 | + mlog(ML_ERROR, "Cannot write global quota info structure\n"); | |
915 | + if (size >= 0) | |
916 | + size = -EIO; | |
917 | + return size; | |
918 | + } | |
919 | + return 0; | |
920 | +} | |
921 | + | |
922 | +int ocfs2_global_write_info(struct super_block *sb, int type) | |
923 | +{ | |
924 | + int err; | |
925 | + struct ocfs2_mem_dqinfo *info = sb_dqinfo(sb, type)->dqi_priv; | |
926 | + | |
927 | + err = ocfs2_qinfo_lock(info, 1); | |
928 | + if (err < 0) | |
929 | + return err; | |
930 | + err = __ocfs2_global_write_info(sb, type); | |
931 | + ocfs2_qinfo_unlock(info, 1); | |
932 | + return err; | |
933 | +} | |
934 | + | |
935 | +/* Read in information from global quota file and acquire a reference to it. | |
936 | + * dquot_acquire() has already started the transaction and locked quota file */ | |
937 | +int ocfs2_global_read_dquot(struct dquot *dquot) | |
938 | +{ | |
939 | + int err, err2, ex = 0; | |
940 | + struct ocfs2_mem_dqinfo *info = | |
941 | + sb_dqinfo(dquot->dq_sb, dquot->dq_type)->dqi_priv; | |
942 | + | |
943 | + err = ocfs2_qinfo_lock(info, 0); | |
944 | + if (err < 0) | |
945 | + goto out; | |
946 | + err = qtree_read_dquot(&info->dqi_gi, dquot); | |
947 | + if (err < 0) | |
948 | + goto out_qlock; | |
949 | + OCFS2_DQUOT(dquot)->dq_use_count++; | |
950 | + OCFS2_DQUOT(dquot)->dq_origspace = dquot->dq_dqb.dqb_curspace; | |
951 | + OCFS2_DQUOT(dquot)->dq_originodes = dquot->dq_dqb.dqb_curinodes; | |
952 | + if (!dquot->dq_off) { /* No real quota entry? */ | |
953 | + /* Upgrade to exclusive lock for allocation */ | |
954 | + err = ocfs2_qinfo_lock(info, 1); | |
955 | + if (err < 0) | |
956 | + goto out_qlock; | |
957 | + ex = 1; | |
958 | + } | |
959 | + err = qtree_write_dquot(&info->dqi_gi, dquot); | |
960 | + if (ex && info_dirty(sb_dqinfo(dquot->dq_sb, dquot->dq_type))) { | |
961 | + err2 = __ocfs2_global_write_info(dquot->dq_sb, dquot->dq_type); | |
962 | + if (!err) | |
963 | + err = err2; | |
964 | + } | |
965 | +out_qlock: | |
966 | + if (ex) | |
967 | + ocfs2_qinfo_unlock(info, 1); | |
968 | + ocfs2_qinfo_unlock(info, 0); | |
969 | +out: | |
970 | + if (err < 0) | |
971 | + mlog_errno(err); | |
972 | + return err; | |
973 | +} | |
974 | + | |
975 | +/* Sync local information about quota modifications with global quota file. | |
976 | + * Caller must have started the transaction and obtained exclusive lock for | |
977 | + * global quota file inode */ | |
978 | +int __ocfs2_sync_dquot(struct dquot *dquot, int freeing) | |
979 | +{ | |
980 | + int err, err2; | |
981 | + struct super_block *sb = dquot->dq_sb; | |
982 | + int type = dquot->dq_type; | |
983 | + struct ocfs2_mem_dqinfo *info = sb_dqinfo(sb, type)->dqi_priv; | |
984 | + struct ocfs2_global_disk_dqblk dqblk; | |
985 | + s64 spacechange, inodechange; | |
986 | + time_t olditime, oldbtime; | |
987 | + | |
988 | + err = sb->s_op->quota_read(sb, type, (char *)&dqblk, | |
989 | + sizeof(struct ocfs2_global_disk_dqblk), | |
990 | + dquot->dq_off); | |
991 | + if (err != sizeof(struct ocfs2_global_disk_dqblk)) { | |
992 | + if (err >= 0) { | |
993 | + mlog(ML_ERROR, "Short read from global quota file " | |
994 | + "(%u read)\n", err); | |
995 | + err = -EIO; | |
996 | + } | |
997 | + goto out; | |
998 | + } | |
999 | + | |
1000 | + /* Update space and inode usage. Get also other information from | |
1001 | + * global quota file so that we don't overwrite any changes there. | |
1002 | + * We are */ | |
1003 | + spin_lock(&dq_data_lock); | |
1004 | + spacechange = dquot->dq_dqb.dqb_curspace - | |
1005 | + OCFS2_DQUOT(dquot)->dq_origspace; | |
1006 | + inodechange = dquot->dq_dqb.dqb_curinodes - | |
1007 | + OCFS2_DQUOT(dquot)->dq_originodes; | |
1008 | + olditime = dquot->dq_dqb.dqb_itime; | |
1009 | + oldbtime = dquot->dq_dqb.dqb_btime; | |
1010 | + ocfs2_global_disk2memdqb(dquot, &dqblk); | |
1011 | + mlog(0, "Syncing global dquot %d space %lld+%lld, inodes %lld+%lld\n", | |
1012 | + dquot->dq_id, dquot->dq_dqb.dqb_curspace, spacechange, | |
1013 | + dquot->dq_dqb.dqb_curinodes, inodechange); | |
1014 | + if (!test_bit(DQ_LASTSET_B + QIF_SPACE_B, &dquot->dq_flags)) | |
1015 | + dquot->dq_dqb.dqb_curspace += spacechange; | |
1016 | + if (!test_bit(DQ_LASTSET_B + QIF_INODES_B, &dquot->dq_flags)) | |
1017 | + dquot->dq_dqb.dqb_curinodes += inodechange; | |
1018 | + /* Now merge grace time changes... */ | |
1019 | + if (!test_bit(DQ_LASTSET_B + QIF_BTIME_B, &dquot->dq_flags) && | |
1020 | + oldbtime > 0) { | |
1021 | + if (dquot->dq_dqb.dqb_btime > 0) | |
1022 | + dquot->dq_dqb.dqb_btime = | |
1023 | + min(dquot->dq_dqb.dqb_btime, oldbtime); | |
1024 | + else | |
1025 | + dquot->dq_dqb.dqb_btime = oldbtime; | |
1026 | + } | |
1027 | + if (!test_bit(DQ_LASTSET_B + QIF_ITIME_B, &dquot->dq_flags) && | |
1028 | + olditime > 0) { | |
1029 | + if (dquot->dq_dqb.dqb_itime > 0) | |
1030 | + dquot->dq_dqb.dqb_itime = | |
1031 | + min(dquot->dq_dqb.dqb_itime, olditime); | |
1032 | + else | |
1033 | + dquot->dq_dqb.dqb_itime = olditime; | |
1034 | + } | |
1035 | + /* All information is properly updated, clear the flags */ | |
1036 | + __clear_bit(DQ_LASTSET_B + QIF_SPACE_B, &dquot->dq_flags); | |
1037 | + __clear_bit(DQ_LASTSET_B + QIF_INODES_B, &dquot->dq_flags); | |
1038 | + __clear_bit(DQ_LASTSET_B + QIF_BLIMITS_B, &dquot->dq_flags); | |
1039 | + __clear_bit(DQ_LASTSET_B + QIF_ILIMITS_B, &dquot->dq_flags); | |
1040 | + __clear_bit(DQ_LASTSET_B + QIF_BTIME_B, &dquot->dq_flags); | |
1041 | + __clear_bit(DQ_LASTSET_B + QIF_ITIME_B, &dquot->dq_flags); | |
1042 | + OCFS2_DQUOT(dquot)->dq_origspace = dquot->dq_dqb.dqb_curspace; | |
1043 | + OCFS2_DQUOT(dquot)->dq_originodes = dquot->dq_dqb.dqb_curinodes; | |
1044 | + spin_unlock(&dq_data_lock); | |
1045 | + err = ocfs2_qinfo_lock(info, freeing); | |
1046 | + if (err < 0) { | |
1047 | + mlog(ML_ERROR, "Failed to lock quota info, loosing quota write" | |
1048 | + " (type=%d, id=%u)\n", dquot->dq_type, | |
1049 | + (unsigned)dquot->dq_id); | |
1050 | + goto out; | |
1051 | + } | |
1052 | + if (freeing) | |
1053 | + OCFS2_DQUOT(dquot)->dq_use_count--; | |
1054 | + err = qtree_write_dquot(&info->dqi_gi, dquot); | |
1055 | + if (err < 0) | |
1056 | + goto out_qlock; | |
1057 | + if (freeing && !OCFS2_DQUOT(dquot)->dq_use_count) { | |
1058 | + err = qtree_release_dquot(&info->dqi_gi, dquot); | |
1059 | + if (info_dirty(sb_dqinfo(sb, type))) { | |
1060 | + err2 = __ocfs2_global_write_info(sb, type); | |
1061 | + if (!err) | |
1062 | + err = err2; | |
1063 | + } | |
1064 | + } | |
1065 | +out_qlock: | |
1066 | + ocfs2_qinfo_unlock(info, freeing); | |
1067 | +out: | |
1068 | + if (err < 0) | |
1069 | + mlog_errno(err); | |
1070 | + return err; | |
1071 | +} | |
1072 | + | |
1073 | +/* | |
1074 | + * Wrappers for generic quota functions | |
1075 | + */ | |
1076 | + | |
1077 | +static int ocfs2_write_dquot(struct dquot *dquot) | |
1078 | +{ | |
1079 | + handle_t *handle; | |
1080 | + struct ocfs2_super *osb = OCFS2_SB(dquot->dq_sb); | |
1081 | + int status = 0; | |
1082 | + | |
1083 | + mlog_entry("id=%u, type=%d", dquot->dq_id, dquot->dq_type); | |
1084 | + | |
1085 | + handle = ocfs2_start_trans(osb, OCFS2_QWRITE_CREDITS); | |
1086 | + if (IS_ERR(handle)) { | |
1087 | + status = PTR_ERR(handle); | |
1088 | + mlog_errno(status); | |
1089 | + goto out; | |
1090 | + } | |
1091 | + status = dquot_commit(dquot); | |
1092 | + ocfs2_commit_trans(osb, handle); | |
1093 | +out: | |
1094 | + mlog_exit(status); | |
1095 | + return status; | |
1096 | +} | |
1097 | + | |
1098 | +int ocfs2_calc_qdel_credits(struct super_block *sb, int type) | |
1099 | +{ | |
1100 | + struct ocfs2_mem_dqinfo *oinfo; | |
1101 | + int features[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA, | |
1102 | + OCFS2_FEATURE_RO_COMPAT_GRPQUOTA }; | |
1103 | + | |
1104 | + if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, features[type])) | |
1105 | + return 0; | |
1106 | + | |
1107 | + oinfo = sb_dqinfo(sb, type)->dqi_priv; | |
1108 | + /* We modify tree, leaf block, global info, local chunk header, | |
1109 | + * global and local inode */ | |
1110 | + return oinfo->dqi_gi.dqi_qtree_depth + 2 + 1 + | |
1111 | + 2 * OCFS2_INODE_UPDATE_CREDITS; | |
1112 | +} | |
1113 | + | |
1114 | +static int ocfs2_release_dquot(struct dquot *dquot) | |
1115 | +{ | |
1116 | + handle_t *handle; | |
1117 | + struct ocfs2_mem_dqinfo *oinfo = | |
1118 | + sb_dqinfo(dquot->dq_sb, dquot->dq_type)->dqi_priv; | |
1119 | + struct ocfs2_super *osb = OCFS2_SB(dquot->dq_sb); | |
1120 | + int status = 0; | |
1121 | + | |
1122 | + mlog_entry("id=%u, type=%d", dquot->dq_id, dquot->dq_type); | |
1123 | + | |
1124 | + status = ocfs2_lock_global_qf(oinfo, 1); | |
1125 | + if (status < 0) | |
1126 | + goto out; | |
1127 | + handle = ocfs2_start_trans(osb, | |
1128 | + ocfs2_calc_qdel_credits(dquot->dq_sb, dquot->dq_type)); | |
1129 | + if (IS_ERR(handle)) { | |
1130 | + status = PTR_ERR(handle); | |
1131 | + mlog_errno(status); | |
1132 | + goto out_ilock; | |
1133 | + } | |
1134 | + status = dquot_release(dquot); | |
1135 | + ocfs2_commit_trans(osb, handle); | |
1136 | +out_ilock: | |
1137 | + ocfs2_unlock_global_qf(oinfo, 1); | |
1138 | +out: | |
1139 | + mlog_exit(status); | |
1140 | + return status; | |
1141 | +} | |
1142 | + | |
1143 | +int ocfs2_calc_qinit_credits(struct super_block *sb, int type) | |
1144 | +{ | |
1145 | + struct ocfs2_mem_dqinfo *oinfo; | |
1146 | + struct ocfs2_dinode *lfe, *gfe; | |
1147 | + int features[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA, | |
1148 | + OCFS2_FEATURE_RO_COMPAT_GRPQUOTA }; | |
1149 | + | |
1150 | + if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, features[type])) | |
1151 | + return 0; | |
1152 | + | |
1153 | + oinfo = sb_dqinfo(sb, type)->dqi_priv; | |
1154 | + gfe = (struct ocfs2_dinode *)oinfo->dqi_gqi_bh->b_data; | |
1155 | + lfe = (struct ocfs2_dinode *)oinfo->dqi_lqi_bh->b_data; | |
1156 | + /* We can extend local file + global file. In local file we | |
1157 | + * can modify info, chunk header block and dquot block. In | |
1158 | + * global file we can modify info, tree and leaf block */ | |
1159 | + return ocfs2_calc_extend_credits(sb, &gfe->id2.i_list, 0) + | |
1160 | + ocfs2_calc_extend_credits(sb, &lfe->id2.i_list, 0) + | |
1161 | + 3 + oinfo->dqi_gi.dqi_qtree_depth + 2; | |
1162 | +} | |
1163 | + | |
1164 | +static int ocfs2_acquire_dquot(struct dquot *dquot) | |
1165 | +{ | |
1166 | + handle_t *handle; | |
1167 | + struct ocfs2_mem_dqinfo *oinfo = | |
1168 | + sb_dqinfo(dquot->dq_sb, dquot->dq_type)->dqi_priv; | |
1169 | + struct ocfs2_super *osb = OCFS2_SB(dquot->dq_sb); | |
1170 | + int status = 0; | |
1171 | + | |
1172 | + mlog_entry("id=%u, type=%d", dquot->dq_id, dquot->dq_type); | |
1173 | + /* We need an exclusive lock, because we're going to update use count | |
1174 | + * and instantiate possibly new dquot structure */ | |
1175 | + status = ocfs2_lock_global_qf(oinfo, 1); | |
1176 | + if (status < 0) | |
1177 | + goto out; | |
1178 | + handle = ocfs2_start_trans(osb, | |
1179 | + ocfs2_calc_qinit_credits(dquot->dq_sb, dquot->dq_type)); | |
1180 | + if (IS_ERR(handle)) { | |
1181 | + status = PTR_ERR(handle); | |
1182 | + mlog_errno(status); | |
1183 | + goto out_ilock; | |
1184 | + } | |
1185 | + status = dquot_acquire(dquot); | |
1186 | + ocfs2_commit_trans(osb, handle); | |
1187 | +out_ilock: | |
1188 | + ocfs2_unlock_global_qf(oinfo, 1); | |
1189 | +out: | |
1190 | + mlog_exit(status); | |
1191 | + return status; | |
1192 | +} | |
1193 | + | |
1194 | +static int ocfs2_mark_dquot_dirty(struct dquot *dquot) | |
1195 | +{ | |
1196 | + unsigned long mask = (1 << (DQ_LASTSET_B + QIF_ILIMITS_B)) | | |
1197 | + (1 << (DQ_LASTSET_B + QIF_BLIMITS_B)) | | |
1198 | + (1 << (DQ_LASTSET_B + QIF_INODES_B)) | | |
1199 | + (1 << (DQ_LASTSET_B + QIF_SPACE_B)) | | |
1200 | + (1 << (DQ_LASTSET_B + QIF_BTIME_B)) | | |
1201 | + (1 << (DQ_LASTSET_B + QIF_ITIME_B)); | |
1202 | + int sync = 0; | |
1203 | + int status; | |
1204 | + struct super_block *sb = dquot->dq_sb; | |
1205 | + int type = dquot->dq_type; | |
1206 | + struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv; | |
1207 | + handle_t *handle; | |
1208 | + struct ocfs2_super *osb = OCFS2_SB(sb); | |
1209 | + | |
1210 | + mlog_entry("id=%u, type=%d", dquot->dq_id, type); | |
1211 | + dquot_mark_dquot_dirty(dquot); | |
1212 | + | |
1213 | + /* In case user set some limits, sync dquot immediately to global | |
1214 | + * quota file so that information propagates quicker */ | |
1215 | + spin_lock(&dq_data_lock); | |
1216 | + if (dquot->dq_flags & mask) | |
1217 | + sync = 1; | |
1218 | + spin_unlock(&dq_data_lock); | |
1219 | + if (!sync) { | |
1220 | + status = ocfs2_write_dquot(dquot); | |
1221 | + goto out; | |
1222 | + } | |
1223 | + status = ocfs2_lock_global_qf(oinfo, 1); | |
1224 | + if (status < 0) | |
1225 | + goto out; | |
1226 | + handle = ocfs2_start_trans(osb, OCFS2_QSYNC_CREDITS); | |
1227 | + if (IS_ERR(handle)) { | |
1228 | + status = PTR_ERR(handle); | |
1229 | + mlog_errno(status); | |
1230 | + goto out_ilock; | |
1231 | + } | |
1232 | + status = ocfs2_sync_dquot(dquot); | |
1233 | + if (status < 0) { | |
1234 | + mlog_errno(status); | |
1235 | + goto out_trans; | |
1236 | + } | |
1237 | + /* Now write updated local dquot structure */ | |
1238 | + status = dquot_commit(dquot); | |
1239 | +out_trans: | |
1240 | + ocfs2_commit_trans(osb, handle); | |
1241 | +out_ilock: | |
1242 | + ocfs2_unlock_global_qf(oinfo, 1); | |
1243 | +out: | |
1244 | + mlog_exit(status); | |
1245 | + return status; | |
1246 | +} | |
1247 | + | |
1248 | +/* This should happen only after set_dqinfo(). */ | |
1249 | +static int ocfs2_write_info(struct super_block *sb, int type) | |
1250 | +{ | |
1251 | + handle_t *handle; | |
1252 | + int status = 0; | |
1253 | + struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv; | |
1254 | + | |
1255 | + mlog_entry_void(); | |
1256 | + | |
1257 | + status = ocfs2_lock_global_qf(oinfo, 1); | |
1258 | + if (status < 0) | |
1259 | + goto out; | |
1260 | + handle = ocfs2_start_trans(OCFS2_SB(sb), OCFS2_QINFO_WRITE_CREDITS); | |
1261 | + if (IS_ERR(handle)) { | |
1262 | + status = PTR_ERR(handle); | |
1263 | + mlog_errno(status); | |
1264 | + goto out_ilock; | |
1265 | + } | |
1266 | + status = dquot_commit_info(sb, type); | |
1267 | + ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1268 | +out_ilock: | |
1269 | + ocfs2_unlock_global_qf(oinfo, 1); | |
1270 | +out: | |
1271 | + mlog_exit(status); | |
1272 | + return status; | |
1273 | +} | |
1274 | + | |
1275 | +/* This is difficult. We have to lock quota inode and start transaction | |
1276 | + * in this function but we don't want to take the penalty of exlusive | |
1277 | + * quota file lock when we are just going to use cached structures. So | |
1278 | + * we just take read lock check whether we have dquot cached and if so, | |
1279 | + * we don't have to take the write lock... */ | |
1280 | +static int ocfs2_dquot_initialize(struct inode *inode, int type) | |
1281 | +{ | |
1282 | + handle_t *handle = NULL; | |
1283 | + int status = 0; | |
1284 | + struct super_block *sb = inode->i_sb; | |
1285 | + struct ocfs2_mem_dqinfo *oinfo; | |
1286 | + int exclusive = 0; | |
1287 | + int cnt; | |
1288 | + qid_t id; | |
1289 | + | |
1290 | + mlog_entry_void(); | |
1291 | + | |
1292 | + for (cnt = 0; cnt < MAXQUOTAS; cnt++) { | |
1293 | + if (type != -1 && cnt != type) | |
1294 | + continue; | |
1295 | + oinfo = sb_dqinfo(sb, cnt)->dqi_priv; | |
1296 | + status = ocfs2_lock_global_qf(oinfo, 0); | |
1297 | + if (status < 0) | |
1298 | + goto out; | |
1299 | + /* This is just a performance optimization not a reliable test. | |
1300 | + * Since we hold an inode lock, noone can actually release | |
1301 | + * the structure until we are finished with initialization. */ | |
1302 | + if (inode->i_dquot[cnt] != NODQUOT) { | |
1303 | + ocfs2_unlock_global_qf(oinfo, 0); | |
1304 | + continue; | |
1305 | + } | |
1306 | + /* When we have inode lock, we know that no dquot_release() can | |
1307 | + * run and thus we can safely check whether we need to | |
1308 | + * read+modify global file to get quota information or whether | |
1309 | + * our node already has it. */ | |
1310 | + if (cnt == USRQUOTA) | |
1311 | + id = inode->i_uid; | |
1312 | + else if (cnt == GRPQUOTA) | |
1313 | + id = inode->i_gid; | |
1314 | + else | |
1315 | + BUG(); | |
1316 | + /* Obtain exclusion from quota off... */ | |
1317 | + down_write(&sb_dqopt(sb)->dqptr_sem); | |
1318 | + exclusive = !dquot_is_cached(sb, id, cnt); | |
1319 | + up_write(&sb_dqopt(sb)->dqptr_sem); | |
1320 | + if (exclusive) { | |
1321 | + status = ocfs2_lock_global_qf(oinfo, 1); | |
1322 | + if (status < 0) { | |
1323 | + exclusive = 0; | |
1324 | + mlog_errno(status); | |
1325 | + goto out_ilock; | |
1326 | + } | |
1327 | + handle = ocfs2_start_trans(OCFS2_SB(sb), | |
1328 | + ocfs2_calc_qinit_credits(sb, cnt)); | |
1329 | + if (IS_ERR(handle)) { | |
1330 | + status = PTR_ERR(handle); | |
1331 | + mlog_errno(status); | |
1332 | + goto out_ilock; | |
1333 | + } | |
1334 | + } | |
1335 | + dquot_initialize(inode, cnt); | |
1336 | + if (exclusive) { | |
1337 | + ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1338 | + ocfs2_unlock_global_qf(oinfo, 1); | |
1339 | + } | |
1340 | + ocfs2_unlock_global_qf(oinfo, 0); | |
1341 | + } | |
1342 | + mlog_exit(0); | |
1343 | + return 0; | |
1344 | +out_ilock: | |
1345 | + if (exclusive) | |
1346 | + ocfs2_unlock_global_qf(oinfo, 1); | |
1347 | + ocfs2_unlock_global_qf(oinfo, 0); | |
1348 | +out: | |
1349 | + mlog_exit(status); | |
1350 | + return status; | |
1351 | +} | |
1352 | + | |
1353 | +static int ocfs2_dquot_drop_slow(struct inode *inode) | |
1354 | +{ | |
1355 | + int status; | |
1356 | + int cnt; | |
1357 | + int got_lock[MAXQUOTAS] = {0, 0}; | |
1358 | + handle_t *handle; | |
1359 | + struct super_block *sb = inode->i_sb; | |
1360 | + struct ocfs2_mem_dqinfo *oinfo; | |
1361 | + | |
1362 | + for (cnt = 0; cnt < MAXQUOTAS; cnt++) { | |
1363 | + oinfo = sb_dqinfo(sb, cnt)->dqi_priv; | |
1364 | + status = ocfs2_lock_global_qf(oinfo, 1); | |
1365 | + if (status < 0) | |
1366 | + goto out; | |
1367 | + got_lock[cnt] = 1; | |
1368 | + } | |
1369 | + handle = ocfs2_start_trans(OCFS2_SB(sb), | |
1370 | + ocfs2_calc_qinit_credits(sb, USRQUOTA) + | |
1371 | + ocfs2_calc_qinit_credits(sb, GRPQUOTA)); | |
1372 | + if (IS_ERR(handle)) { | |
1373 | + status = PTR_ERR(handle); | |
1374 | + mlog_errno(status); | |
1375 | + goto out; | |
1376 | + } | |
1377 | + dquot_drop(inode); | |
1378 | + ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1379 | +out: | |
1380 | + for (cnt = 0; cnt < MAXQUOTAS; cnt++) | |
1381 | + if (got_lock[cnt]) { | |
1382 | + oinfo = sb_dqinfo(sb, cnt)->dqi_priv; | |
1383 | + ocfs2_unlock_global_qf(oinfo, 1); | |
1384 | + } | |
1385 | + return status; | |
1386 | +} | |
1387 | + | |
1388 | +/* See the comment before ocfs2_dquot_initialize. */ | |
1389 | +static int ocfs2_dquot_drop(struct inode *inode) | |
1390 | +{ | |
1391 | + int status = 0; | |
1392 | + struct super_block *sb = inode->i_sb; | |
1393 | + struct ocfs2_mem_dqinfo *oinfo; | |
1394 | + int exclusive = 0; | |
1395 | + int cnt; | |
1396 | + int got_lock[MAXQUOTAS] = {0, 0}; | |
1397 | + | |
1398 | + mlog_entry_void(); | |
1399 | + for (cnt = 0; cnt < MAXQUOTAS; cnt++) { | |
1400 | + oinfo = sb_dqinfo(sb, cnt)->dqi_priv; | |
1401 | + status = ocfs2_lock_global_qf(oinfo, 0); | |
1402 | + if (status < 0) | |
1403 | + goto out; | |
1404 | + got_lock[cnt] = 1; | |
1405 | + } | |
1406 | + /* Lock against anyone releasing references so that when when we check | |
1407 | + * we know we are not going to be last ones to release dquot */ | |
1408 | + down_write(&sb_dqopt(sb)->dqptr_sem); | |
1409 | + /* Urgh, this is a terrible hack :( */ | |
1410 | + for (cnt = 0; cnt < MAXQUOTAS; cnt++) { | |
1411 | + if (inode->i_dquot[cnt] != NODQUOT && | |
1412 | + atomic_read(&inode->i_dquot[cnt]->dq_count) > 1) { | |
1413 | + exclusive = 1; | |
1414 | + break; | |
1415 | + } | |
1416 | + } | |
1417 | + if (!exclusive) | |
1418 | + dquot_drop_locked(inode); | |
1419 | + up_write(&sb_dqopt(sb)->dqptr_sem); | |
1420 | +out: | |
1421 | + for (cnt = 0; cnt < MAXQUOTAS; cnt++) | |
1422 | + if (got_lock[cnt]) { | |
1423 | + oinfo = sb_dqinfo(sb, cnt)->dqi_priv; | |
1424 | + ocfs2_unlock_global_qf(oinfo, 0); | |
1425 | + } | |
1426 | + /* In case we bailed out because we had to do expensive locking | |
1427 | + * do it now... */ | |
1428 | + if (exclusive) | |
1429 | + status = ocfs2_dquot_drop_slow(inode); | |
1430 | + mlog_exit(status); | |
1431 | + return status; | |
1432 | +} | |
1433 | + | |
1434 | +static struct dquot *ocfs2_alloc_dquot(struct super_block *sb, int type) | |
1435 | +{ | |
1436 | + struct ocfs2_dquot *dquot = | |
1437 | + kmem_cache_zalloc(ocfs2_dquot_cachep, GFP_NOFS); | |
1438 | + | |
1439 | + if (!dquot) | |
1440 | + return NULL; | |
1441 | + return &dquot->dq_dquot; | |
1442 | +} | |
1443 | + | |
1444 | +static void ocfs2_destroy_dquot(struct dquot *dquot) | |
1445 | +{ | |
1446 | + kmem_cache_free(ocfs2_dquot_cachep, dquot); | |
1447 | +} | |
1448 | + | |
1449 | +struct dquot_operations ocfs2_quota_operations = { | |
1450 | + .initialize = ocfs2_dquot_initialize, | |
1451 | + .drop = ocfs2_dquot_drop, | |
1452 | + .alloc_space = dquot_alloc_space, | |
1453 | + .alloc_inode = dquot_alloc_inode, | |
1454 | + .free_space = dquot_free_space, | |
1455 | + .free_inode = dquot_free_inode, | |
1456 | + .transfer = dquot_transfer, | |
1457 | + .write_dquot = ocfs2_write_dquot, | |
1458 | + .acquire_dquot = ocfs2_acquire_dquot, | |
1459 | + .release_dquot = ocfs2_release_dquot, | |
1460 | + .mark_dirty = ocfs2_mark_dquot_dirty, | |
1461 | + .write_info = ocfs2_write_info, | |
1462 | + .alloc_dquot = ocfs2_alloc_dquot, | |
1463 | + .destroy_dquot = ocfs2_destroy_dquot, | |
1464 | +}; | |
1465 | Index: linux-2.6.27-ocfs2/fs/ocfs2/quota_local.c | |
1466 | =================================================================== | |
1467 | --- /dev/null | |
1468 | +++ linux-2.6.27-ocfs2/fs/ocfs2/quota_local.c | |
1469 | @@ -0,0 +1,843 @@ | |
1470 | +/* | |
1471 | + * Implementation of operations over local quota file | |
1472 | + */ | |
1473 | + | |
1474 | +#include <linux/fs.h> | |
1475 | +#include <linux/quota.h> | |
1476 | +#include <linux/quotaops.h> | |
1477 | +#include <linux/module.h> | |
1478 | + | |
1479 | +#define MLOG_MASK_PREFIX ML_QUOTA | |
1480 | +#include <cluster/masklog.h> | |
1481 | + | |
1482 | +#include "ocfs2_fs.h" | |
1483 | +#include "ocfs2.h" | |
1484 | +#include "inode.h" | |
1485 | +#include "alloc.h" | |
1486 | +#include "file.h" | |
1487 | +#include "buffer_head_io.h" | |
1488 | +#include "journal.h" | |
1489 | +#include "sysfile.h" | |
1490 | +#include "dlmglue.h" | |
1491 | +#include "quota.h" | |
1492 | + | |
1493 | +/* Number of local quota structures per block */ | |
1494 | +static inline unsigned int ol_quota_entries_per_block(struct super_block *sb) | |
1495 | +{ | |
1496 | + return ((sb->s_blocksize - OCFS2_QBLK_RESERVED_SPACE) / | |
1497 | + sizeof(struct ocfs2_local_disk_dqblk)); | |
1498 | +} | |
1499 | + | |
1500 | +/* Number of blocks with entries in one chunk */ | |
1501 | +static inline unsigned int ol_chunk_blocks(struct super_block *sb) | |
1502 | +{ | |
1503 | + return ((sb->s_blocksize - sizeof(struct ocfs2_local_disk_chunk) - | |
1504 | + OCFS2_QBLK_RESERVED_SPACE) << 3) / | |
1505 | + ol_quota_entries_per_block(sb); | |
1506 | +} | |
1507 | + | |
1508 | +/* Number of entries in a chunk bitmap */ | |
1509 | +static unsigned int ol_chunk_entries(struct super_block *sb) | |
1510 | +{ | |
1511 | + return ol_chunk_blocks(sb) * ol_quota_entries_per_block(sb); | |
1512 | +} | |
1513 | + | |
1514 | +/* Offset of the chunk in quota file */ | |
1515 | +static unsigned int ol_quota_chunk_block(struct super_block *sb, int c) | |
1516 | +{ | |
1517 | + /* 1 block for local quota file info, 1 block per chunk for chunk info */ | |
1518 | + return 1 + (ol_chunk_blocks(sb) + 1) * c; | |
1519 | +} | |
1520 | + | |
1521 | +/* Offset of the dquot structure in the quota file */ | |
1522 | +static loff_t ol_dqblk_off(struct super_block *sb, int c, int off) | |
1523 | +{ | |
1524 | + int epb = ol_quota_entries_per_block(sb); | |
1525 | + | |
1526 | + return ((ol_quota_chunk_block(sb, c) + 1 + off / epb) | |
1527 | + << sb->s_blocksize_bits) + | |
1528 | + (off % epb) * sizeof(struct ocfs2_local_disk_dqblk); | |
1529 | +} | |
1530 | + | |
1531 | +/* Compute block number from given offset */ | |
1532 | +static inline unsigned int ol_dqblk_file_block(struct super_block *sb, loff_t off) | |
1533 | +{ | |
1534 | + return off >> sb->s_blocksize_bits; | |
1535 | +} | |
1536 | + | |
1537 | +static inline unsigned int ol_dqblk_block_offset(struct super_block *sb, loff_t off) | |
1538 | +{ | |
1539 | + return off & ((1 << sb->s_blocksize_bits) - 1); | |
1540 | +} | |
1541 | + | |
1542 | +/* Compute offset in the chunk of a structure with the given offset */ | |
1543 | +static int ol_dqblk_chunk_off(struct super_block *sb, int c, loff_t off) | |
1544 | +{ | |
1545 | + int epb = ol_quota_entries_per_block(sb); | |
1546 | + | |
1547 | + return ((off >> sb->s_blocksize_bits) - | |
1548 | + ol_quota_chunk_block(sb, c) - 1) * epb | |
1549 | + + ((unsigned int)(off & ((1 << sb->s_blocksize_bits) - 1))) / | |
1550 | + sizeof(struct ocfs2_local_disk_dqblk); | |
1551 | +} | |
1552 | + | |
1553 | +/* Write bufferhead into the fs */ | |
1554 | +static int ocfs2_modify_bh(struct inode *inode, struct buffer_head *bh, | |
1555 | + void (*modify)(struct buffer_head *, void *), void *private) | |
1556 | +{ | |
1557 | + struct super_block *sb = inode->i_sb; | |
1558 | + handle_t *handle; | |
1559 | + int status; | |
1560 | + | |
1561 | + handle = ocfs2_start_trans(OCFS2_SB(sb), 1); | |
1562 | + if (IS_ERR(handle)) { | |
1563 | + status = PTR_ERR(handle); | |
1564 | + mlog_errno(status); | |
1565 | + return status; | |
1566 | + } | |
1567 | + status = ocfs2_journal_access(handle, inode, bh, | |
1568 | + OCFS2_JOURNAL_ACCESS_WRITE); | |
1569 | + if (status < 0) { | |
1570 | + mlog_errno(status); | |
1571 | + ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1572 | + return status; | |
1573 | + } | |
1574 | + lock_buffer(bh); | |
1575 | + modify(bh, private); | |
1576 | + unlock_buffer(bh); | |
1577 | + status = ocfs2_journal_dirty(handle, bh); | |
1578 | + if (status < 0) { | |
1579 | + mlog_errno(status); | |
1580 | + ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1581 | + return status; | |
1582 | + } | |
1583 | + status = ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
1584 | + if (status < 0) { | |
1585 | + mlog_errno(status); | |
1586 | + return status; | |
1587 | + } | |
1588 | + return 0; | |
1589 | +} | |
1590 | + | |
1591 | +/* Check whether we understand format of quota files */ | |
1592 | +static int ocfs2_local_check_quota_file(struct super_block *sb, int type) | |
1593 | +{ | |
1594 | + unsigned int lmagics[MAXQUOTAS] = OCFS2_LOCAL_QMAGICS; | |
1595 | + unsigned int lversions[MAXQUOTAS] = OCFS2_LOCAL_QVERSIONS; | |
1596 | + unsigned int gmagics[MAXQUOTAS] = OCFS2_GLOBAL_QMAGICS; | |
1597 | + unsigned int gversions[MAXQUOTAS] = OCFS2_GLOBAL_QVERSIONS; | |
1598 | + unsigned int ino[MAXQUOTAS] = { USER_QUOTA_SYSTEM_INODE, | |
1599 | + GROUP_QUOTA_SYSTEM_INODE }; | |
1600 | + struct buffer_head *bh; | |
1601 | + struct inode *linode = sb_dqopt(sb)->files[type]; | |
1602 | + struct inode *ginode = NULL; | |
1603 | + struct ocfs2_disk_dqheader *dqhead; | |
1604 | + int status, ret = 0; | |
1605 | + | |
1606 | + /* First check whether we understand local quota file */ | |
1607 | + bh = ocfs2_bread(linode, 0, &status, 0); | |
1608 | + if (!bh) { | |
1609 | + mlog_errno(status); | |
1610 | + mlog(ML_ERROR, "failed to read quota file header (type=%d)\n", | |
1611 | + type); | |
1612 | + goto out_err; | |
1613 | + } | |
1614 | + dqhead = (struct ocfs2_disk_dqheader *)(bh->b_data); | |
1615 | + if (le32_to_cpu(dqhead->dqh_magic) != lmagics[type]) { | |
1616 | + mlog(ML_ERROR, "quota file magic does not match (%u != %u)," | |
1617 | + " type=%d\n", le32_to_cpu(dqhead->dqh_magic), | |
1618 | + lmagics[type], type); | |
1619 | + goto out_err; | |
1620 | + } | |
1621 | + if (le32_to_cpu(dqhead->dqh_version) != lversions[type]) { | |
1622 | + mlog(ML_ERROR, "quota file version does not match (%u != %u)," | |
1623 | + " type=%d\n", le32_to_cpu(dqhead->dqh_version), | |
1624 | + lversions[type], type); | |
1625 | + goto out_err; | |
1626 | + } | |
1627 | + brelse(bh); | |
1628 | + bh = NULL; | |
1629 | + | |
1630 | + /* Next check whether we understand global quota file */ | |
1631 | + ginode = ocfs2_get_system_file_inode(OCFS2_SB(sb), ino[type], | |
1632 | + OCFS2_INVALID_SLOT); | |
1633 | + if (!ginode) { | |
1634 | + mlog(ML_ERROR, "cannot get global quota file inode " | |
1635 | + "(type=%d)\n", type); | |
1636 | + goto out_err; | |
1637 | + } | |
1638 | + /* Since the header is read only, we don't care about locking */ | |
1639 | + bh = ocfs2_bread(ginode, 0, &status, 0); | |
1640 | + if (!bh) { | |
1641 | + mlog_errno(status); | |
1642 | + mlog(ML_ERROR, "failed to read global quota file header " | |
1643 | + "(type=%d)\n", type); | |
1644 | + goto out_err; | |
1645 | + } | |
1646 | + dqhead = (struct ocfs2_disk_dqheader *)(bh->b_data); | |
1647 | + if (le32_to_cpu(dqhead->dqh_magic) != gmagics[type]) { | |
1648 | + mlog(ML_ERROR, "global quota file magic does not match " | |
1649 | + "(%u != %u), type=%d\n", | |
1650 | + le32_to_cpu(dqhead->dqh_magic), gmagics[type], type); | |
1651 | + goto out_err; | |
1652 | + } | |
1653 | + if (le32_to_cpu(dqhead->dqh_version) != gversions[type]) { | |
1654 | + mlog(ML_ERROR, "global quota file version does not match " | |
1655 | + "(%u != %u), type=%d\n", | |
1656 | + le32_to_cpu(dqhead->dqh_version), gversions[type], | |
1657 | + type); | |
1658 | + goto out_err; | |
1659 | + } | |
1660 | + | |
1661 | + ret = 1; | |
1662 | +out_err: | |
1663 | + brelse(bh); | |
1664 | + iput(ginode); | |
1665 | + return ret; | |
1666 | +} | |
1667 | + | |
1668 | +/* Release given list of quota file chunks */ | |
1669 | +static void ocfs2_release_local_quota_bitmaps(struct list_head *head) | |
1670 | +{ | |
1671 | + struct ocfs2_quota_chunk *pos, *next; | |
1672 | + | |
1673 | + list_for_each_entry_safe(pos, next, head, qc_chunk) { | |
1674 | + list_del(&pos->qc_chunk); | |
1675 | + brelse(pos->qc_headerbh); | |
1676 | + kmem_cache_free(ocfs2_qf_chunk_cachep, pos); | |
1677 | + } | |
1678 | +} | |
1679 | + | |
1680 | +/* Load quota bitmaps into memory */ | |
1681 | +static int ocfs2_load_local_quota_bitmaps(struct inode *inode, | |
1682 | + struct ocfs2_local_disk_dqinfo *ldinfo, | |
1683 | + struct list_head *head) | |
1684 | +{ | |
1685 | + struct ocfs2_quota_chunk *newchunk; | |
1686 | + int i, status; | |
1687 | + | |
1688 | + INIT_LIST_HEAD(head); | |
1689 | + for (i = 0; i < le32_to_cpu(ldinfo->dqi_chunks); i++) { | |
1690 | + newchunk = kmem_cache_alloc(ocfs2_qf_chunk_cachep, GFP_NOFS); | |
1691 | + if (!newchunk) { | |
1692 | + ocfs2_release_local_quota_bitmaps(head); | |
1693 | + return -ENOMEM; | |
1694 | + } | |
1695 | + newchunk->qc_num = i; | |
1696 | + newchunk->qc_headerbh = ocfs2_bread(inode, | |
1697 | + ol_quota_chunk_block(inode->i_sb, i), | |
1698 | + &status, 0); | |
1699 | + if (!newchunk->qc_headerbh) { | |
1700 | + mlog_errno(status); | |
1701 | + kmem_cache_free(ocfs2_qf_chunk_cachep, newchunk); | |
1702 | + ocfs2_release_local_quota_bitmaps(head); | |
1703 | + return status; | |
1704 | + } | |
1705 | + list_add_tail(&newchunk->qc_chunk, head); | |
1706 | + } | |
1707 | + return 0; | |
1708 | +} | |
1709 | + | |
1710 | +static void olq_update_info(struct buffer_head *bh, void *private) | |
1711 | +{ | |
1712 | + struct mem_dqinfo *info = private; | |
1713 | + struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
1714 | + struct ocfs2_local_disk_dqinfo *ldinfo; | |
1715 | + | |
1716 | + ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + | |
1717 | + OCFS2_LOCAL_INFO_OFF); | |
1718 | + spin_lock(&dq_data_lock); | |
1719 | + ldinfo->dqi_flags = cpu_to_le32(info->dqi_flags & DQF_MASK); | |
1720 | + ldinfo->dqi_chunks = cpu_to_le32(oinfo->dqi_chunks); | |
1721 | + ldinfo->dqi_blocks = cpu_to_le32(oinfo->dqi_blocks); | |
1722 | + spin_unlock(&dq_data_lock); | |
1723 | +} | |
1724 | + | |
1725 | +/* Read information header from quota file */ | |
1726 | +static int ocfs2_local_read_info(struct super_block *sb, int type) | |
1727 | +{ | |
1728 | + struct ocfs2_local_disk_dqinfo *ldinfo; | |
1729 | + struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
1730 | + struct ocfs2_mem_dqinfo *oinfo; | |
1731 | + struct inode *lqinode = sb_dqopt(sb)->files[type]; | |
1732 | + int status; | |
1733 | + struct buffer_head *bh = NULL; | |
1734 | + int locked = 0; | |
1735 | + | |
1736 | + info->dqi_maxblimit = 0x7fffffffffffffffLL; | |
1737 | + info->dqi_maxilimit = 0x7fffffffffffffffLL; | |
1738 | + oinfo = kmalloc(sizeof(struct ocfs2_mem_dqinfo), GFP_NOFS); | |
1739 | + if (!oinfo) { | |
1740 | + mlog(ML_ERROR, "failed to allocate memory for ocfs2 quota" | |
1741 | + " info."); | |
1742 | + goto out_err; | |
1743 | + } | |
1744 | + info->dqi_priv = oinfo; | |
1745 | + oinfo->dqi_type = type; | |
1746 | + INIT_LIST_HEAD(&oinfo->dqi_chunk); | |
1747 | + oinfo->dqi_lqi_bh = NULL; | |
1748 | + oinfo->dqi_ibh = NULL; | |
1749 | + | |
1750 | + status = ocfs2_global_read_info(sb, type); | |
1751 | + if (status < 0) | |
1752 | + goto out_err; | |
1753 | + | |
1754 | + status = ocfs2_inode_lock(lqinode, &oinfo->dqi_lqi_bh, 1); | |
1755 | + if (status < 0) { | |
1756 | + mlog_errno(status); | |
1757 | + goto out_err; | |
1758 | + } | |
1759 | + locked = 1; | |
1760 | + | |
1761 | + /* Now read local header */ | |
1762 | + bh = ocfs2_bread(lqinode, 0, &status, 0); | |
1763 | + if (!bh) { | |
1764 | + mlog_errno(status); | |
1765 | + mlog(ML_ERROR, "failed to read quota file info header " | |
1766 | + "(type=%d)\n", type); | |
1767 | + goto out_err; | |
1768 | + } | |
1769 | + ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + | |
1770 | + OCFS2_LOCAL_INFO_OFF); | |
1771 | + info->dqi_flags = le32_to_cpu(ldinfo->dqi_flags); | |
1772 | + oinfo->dqi_chunks = le32_to_cpu(ldinfo->dqi_chunks); | |
1773 | + oinfo->dqi_blocks = le32_to_cpu(ldinfo->dqi_blocks); | |
1774 | + oinfo->dqi_ibh = bh; | |
1775 | + | |
1776 | + /* We crashed when using local quota file? */ | |
1777 | + if (!(info->dqi_flags & OLQF_CLEAN)) | |
1778 | + goto out_err; /* So far we just bail out. Later we should resync here */ | |
1779 | + | |
1780 | + status = ocfs2_load_local_quota_bitmaps(sb_dqopt(sb)->files[type], | |
1781 | + ldinfo, | |
1782 | + &oinfo->dqi_chunk); | |
1783 | + if (status < 0) { | |
1784 | + mlog_errno(status); | |
1785 | + goto out_err; | |
1786 | + } | |
1787 | + | |
1788 | + /* Now mark quota file as used */ | |
1789 | + info->dqi_flags &= ~OLQF_CLEAN; | |
1790 | + status = ocfs2_modify_bh(lqinode, bh, olq_update_info, info); | |
1791 | + if (status < 0) { | |
1792 | + mlog_errno(status); | |
1793 | + goto out_err; | |
1794 | + } | |
1795 | + | |
1796 | + return 0; | |
1797 | +out_err: | |
1798 | + if (oinfo) { | |
1799 | + iput(oinfo->dqi_gqinode); | |
1800 | + ocfs2_simple_drop_lockres(OCFS2_SB(sb), &oinfo->dqi_gqlock); | |
1801 | + ocfs2_lock_res_free(&oinfo->dqi_gqlock); | |
1802 | + brelse(oinfo->dqi_lqi_bh); | |
1803 | + if (locked) | |
1804 | + ocfs2_inode_unlock(lqinode, 1); | |
1805 | + ocfs2_release_local_quota_bitmaps(&oinfo->dqi_chunk); | |
1806 | + kfree(oinfo); | |
1807 | + } | |
1808 | + brelse(bh); | |
1809 | + return -1; | |
1810 | +} | |
1811 | + | |
1812 | +/* Write local info to quota file */ | |
1813 | +static int ocfs2_local_write_info(struct super_block *sb, int type) | |
1814 | +{ | |
1815 | + struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
1816 | + struct buffer_head *bh = ((struct ocfs2_mem_dqinfo *)info->dqi_priv) | |
1817 | + ->dqi_ibh; | |
1818 | + int status; | |
1819 | + | |
1820 | + status = ocfs2_modify_bh(sb_dqopt(sb)->files[type], bh, olq_update_info, | |
1821 | + info); | |
1822 | + if (status < 0) { | |
1823 | + mlog_errno(status); | |
1824 | + return -1; | |
1825 | + } | |
1826 | + | |
1827 | + return 0; | |
1828 | +} | |
1829 | + | |
1830 | +/* Release info from memory */ | |
1831 | +static int ocfs2_local_free_info(struct super_block *sb, int type) | |
1832 | +{ | |
1833 | + struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
1834 | + struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
1835 | + struct ocfs2_quota_chunk *chunk; | |
1836 | + struct ocfs2_local_disk_chunk *dchunk; | |
1837 | + int mark_clean = 1, len; | |
1838 | + int status; | |
1839 | + | |
1840 | + iput(oinfo->dqi_gqinode); | |
1841 | + ocfs2_simple_drop_lockres(OCFS2_SB(sb), &oinfo->dqi_gqlock); | |
1842 | + ocfs2_lock_res_free(&oinfo->dqi_gqlock); | |
1843 | + list_for_each_entry(chunk, &oinfo->dqi_chunk, qc_chunk) { | |
1844 | + dchunk = (struct ocfs2_local_disk_chunk *) | |
1845 | + (chunk->qc_headerbh->b_data); | |
1846 | + if (chunk->qc_num < oinfo->dqi_chunks - 1) { | |
1847 | + len = ol_chunk_entries(sb); | |
1848 | + } else { | |
1849 | + len = (oinfo->dqi_blocks - | |
1850 | + ol_quota_chunk_block(sb, chunk->qc_num) - 1) | |
1851 | + * ol_quota_entries_per_block(sb); | |
1852 | + } | |
1853 | + /* Not all entries free? Bug! */ | |
1854 | + if (le32_to_cpu(dchunk->dqc_free) != len) { | |
1855 | + mlog(ML_ERROR, "releasing quota file with used " | |
1856 | + "entries (type=%d)\n", type); | |
1857 | + mark_clean = 0; | |
1858 | + } | |
1859 | + } | |
1860 | + ocfs2_release_local_quota_bitmaps(&oinfo->dqi_chunk); | |
1861 | + | |
1862 | + if (!mark_clean) | |
1863 | + goto out; | |
1864 | + | |
1865 | + /* Mark local file as clean */ | |
1866 | + info->dqi_flags |= OLQF_CLEAN; | |
1867 | + status = ocfs2_modify_bh(sb_dqopt(sb)->files[type], | |
1868 | + oinfo->dqi_ibh, | |
1869 | + olq_update_info, | |
1870 | + info); | |
1871 | + if (status < 0) { | |
1872 | + mlog_errno(status); | |
1873 | + goto out; | |
1874 | + } | |
1875 | + | |
1876 | +out: | |
1877 | + ocfs2_inode_unlock(sb_dqopt(sb)->files[type], 1); | |
1878 | + brelse(oinfo->dqi_ibh); | |
1879 | + brelse(oinfo->dqi_lqi_bh); | |
1880 | + kfree(oinfo); | |
1881 | + return 0; | |
1882 | +} | |
1883 | + | |
1884 | +static void olq_set_dquot(struct buffer_head *bh, void *private) | |
1885 | +{ | |
1886 | + struct ocfs2_dquot *od = private; | |
1887 | + struct ocfs2_local_disk_dqblk *dqblk; | |
1888 | + struct super_block *sb = od->dq_dquot.dq_sb; | |
1889 | + | |
1890 | + dqblk = (struct ocfs2_local_disk_dqblk *)(bh->b_data | |
1891 | + + ol_dqblk_block_offset(sb, od->dq_local_off)); | |
1892 | + | |
1893 | + dqblk->dqb_id = cpu_to_le64(od->dq_dquot.dq_id); | |
1894 | + spin_lock(&dq_data_lock); | |
1895 | + dqblk->dqb_spacemod = cpu_to_le64(od->dq_dquot.dq_dqb.dqb_curspace - | |
1896 | + od->dq_origspace); | |
1897 | + dqblk->dqb_inodemod = cpu_to_le64(od->dq_dquot.dq_dqb.dqb_curinodes - | |
1898 | + od->dq_originodes); | |
1899 | + spin_unlock(&dq_data_lock); | |
1900 | + mlog(0, "Writing local dquot %u space %lld inodes %lld\n", | |
1901 | + od->dq_dquot.dq_id, dqblk->dqb_spacemod, dqblk->dqb_inodemod); | |
1902 | +} | |
1903 | + | |
1904 | +/* Write dquot to local quota file */ | |
1905 | +static int ocfs2_local_write_dquot(struct dquot *dquot) | |
1906 | +{ | |
1907 | + struct super_block *sb = dquot->dq_sb; | |
1908 | + struct ocfs2_dquot *od = OCFS2_DQUOT(dquot); | |
1909 | + struct buffer_head *bh; | |
1910 | + int status; | |
1911 | + | |
1912 | + bh = ocfs2_bread(sb_dqopt(sb)->files[dquot->dq_type], | |
1913 | + ol_dqblk_file_block(sb, od->dq_local_off), | |
1914 | + &status, 0); | |
1915 | + if (!bh) { | |
1916 | + mlog_errno(status); | |
1917 | + goto out; | |
1918 | + } | |
1919 | + status = ocfs2_modify_bh(sb_dqopt(sb)->files[dquot->dq_type], bh, | |
1920 | + olq_set_dquot, od); | |
1921 | + if (status < 0) { | |
1922 | + mlog_errno(status); | |
1923 | + goto out; | |
1924 | + } | |
1925 | +out: | |
1926 | + brelse(bh); | |
1927 | + return status; | |
1928 | +} | |
1929 | + | |
1930 | +/* Find free entry in local quota file */ | |
1931 | +static struct ocfs2_quota_chunk *ocfs2_find_free_entry(struct super_block *sb, | |
1932 | + int type, | |
1933 | + int *offset) | |
1934 | +{ | |
1935 | + struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
1936 | + struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
1937 | + struct ocfs2_quota_chunk *chunk; | |
1938 | + struct ocfs2_local_disk_chunk *dchunk; | |
1939 | + int found = 0, len; | |
1940 | + | |
1941 | + list_for_each_entry(chunk, &oinfo->dqi_chunk, qc_chunk) { | |
1942 | + dchunk = (struct ocfs2_local_disk_chunk *) | |
1943 | + chunk->qc_headerbh->b_data; | |
1944 | + if (le32_to_cpu(dchunk->dqc_free) > 0) { | |
1945 | + found = 1; | |
1946 | + break; | |
1947 | + } | |
1948 | + } | |
1949 | + if (!found) | |
1950 | + return NULL; | |
1951 | + | |
1952 | + if (chunk->qc_num < oinfo->dqi_chunks - 1) { | |
1953 | + len = ol_chunk_entries(sb); | |
1954 | + } else { | |
1955 | + len = (oinfo->dqi_blocks - | |
1956 | + ol_quota_chunk_block(sb, chunk->qc_num) - 1) | |
1957 | + * ol_quota_entries_per_block(sb); | |
1958 | + } | |
1959 | + | |
1960 | + found = ocfs2_find_next_zero_bit(dchunk->dqc_bitmap, len, 0); | |
1961 | + /* We failed? */ | |
1962 | + if (found == len) { | |
1963 | + mlog(ML_ERROR, "Did not find empty entry in chunk %d with %u" | |
1964 | + " entries free (type=%d)\n", chunk->qc_num, | |
1965 | + le32_to_cpu(dchunk->dqc_free), type); | |
1966 | + return ERR_PTR(-EIO); | |
1967 | + } | |
1968 | + *offset = found; | |
1969 | + return chunk; | |
1970 | +} | |
1971 | + | |
1972 | +/* Add new chunk to the local quota file */ | |
1973 | +static struct ocfs2_quota_chunk *ocfs2_local_quota_add_chunk( | |
1974 | + struct super_block *sb, | |
1975 | + int type, | |
1976 | + int *offset) | |
1977 | +{ | |
1978 | + struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
1979 | + struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
1980 | + struct inode *lqinode = sb_dqopt(sb)->files[type]; | |
1981 | + struct ocfs2_quota_chunk *chunk = NULL; | |
1982 | + struct ocfs2_local_disk_chunk *dchunk; | |
1983 | + int status; | |
1984 | + handle_t *handle; | |
1985 | + struct buffer_head *bh = NULL; | |
1986 | + u64 p_blkno; | |
1987 | + | |
1988 | + /* We are protected by dqio_sem so no locking needed */ | |
1989 | + status = ocfs2_extend_no_holes(lqinode, | |
1990 | + lqinode->i_size + 2 * sb->s_blocksize, | |
1991 | + lqinode->i_size); | |
1992 | + if (status < 0) { | |
1993 | + mlog_errno(status); | |
1994 | + goto out; | |
1995 | + } | |
1996 | + status = ocfs2_simple_size_update(lqinode, oinfo->dqi_lqi_bh, | |
1997 | + lqinode->i_size + 2 * sb->s_blocksize); | |
1998 | + if (status < 0) { | |
1999 | + mlog_errno(status); | |
2000 | + goto out; | |
2001 | + } | |
2002 | + | |
2003 | + chunk = kmem_cache_alloc(ocfs2_qf_chunk_cachep, GFP_NOFS); | |
2004 | + if (!chunk) { | |
2005 | + status = -ENOMEM; | |
2006 | + mlog_errno(status); | |
2007 | + goto out; | |
2008 | + } | |
2009 | + | |
2010 | + down_read(&OCFS2_I(lqinode)->ip_alloc_sem); | |
2011 | + status = ocfs2_extent_map_get_blocks(lqinode, oinfo->dqi_blocks, | |
2012 | + &p_blkno, NULL, NULL); | |
2013 | + up_read(&OCFS2_I(lqinode)->ip_alloc_sem); | |
2014 | + if (status < 0) { | |
2015 | + mlog_errno(status); | |
2016 | + goto out; | |
2017 | + } | |
2018 | + bh = sb_getblk(sb, p_blkno); | |
2019 | + if (!bh) { | |
2020 | + status = -ENOMEM; | |
2021 | + mlog_errno(status); | |
2022 | + goto out; | |
2023 | + } | |
2024 | + dchunk = (struct ocfs2_local_disk_chunk *)bh->b_data; | |
2025 | + | |
2026 | + handle = ocfs2_start_trans(OCFS2_SB(sb), 2); | |
2027 | + if (IS_ERR(handle)) { | |
2028 | + status = PTR_ERR(handle); | |
2029 | + mlog_errno(status); | |
2030 | + goto out; | |
2031 | + } | |
2032 | + | |
2033 | + status = ocfs2_journal_access(handle, lqinode, bh, | |
2034 | + OCFS2_JOURNAL_ACCESS_WRITE); | |
2035 | + if (status < 0) { | |
2036 | + mlog_errno(status); | |
2037 | + goto out_trans; | |
2038 | + } | |
2039 | + lock_buffer(bh); | |
2040 | + dchunk->dqc_free = ol_quota_entries_per_block(sb); | |
2041 | + memset(dchunk->dqc_bitmap, 0, | |
2042 | + sb->s_blocksize - sizeof(struct ocfs2_local_disk_chunk) - | |
2043 | + OCFS2_QBLK_RESERVED_SPACE); | |
2044 | + set_buffer_uptodate(bh); | |
2045 | + unlock_buffer(bh); | |
2046 | + status = ocfs2_journal_dirty(handle, bh); | |
2047 | + if (status < 0) { | |
2048 | + mlog_errno(status); | |
2049 | + goto out_trans; | |
2050 | + } | |
2051 | + | |
2052 | + oinfo->dqi_blocks += 2; | |
2053 | + oinfo->dqi_chunks++; | |
2054 | + status = ocfs2_local_write_info(sb, type); | |
2055 | + if (status < 0) { | |
2056 | + mlog_errno(status); | |
2057 | + goto out_trans; | |
2058 | + } | |
2059 | + status = ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
2060 | + if (status < 0) { | |
2061 | + mlog_errno(status); | |
2062 | + goto out; | |
2063 | + } | |
2064 | + | |
2065 | + list_add_tail(&chunk->qc_chunk, &oinfo->dqi_chunk); | |
2066 | + chunk->qc_num = list_entry(chunk->qc_chunk.prev, | |
2067 | + struct ocfs2_quota_chunk, | |
2068 | + qc_chunk)->qc_num + 1; | |
2069 | + chunk->qc_headerbh = bh; | |
2070 | + *offset = 0; | |
2071 | + return chunk; | |
2072 | +out_trans: | |
2073 | + ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
2074 | +out: | |
2075 | + brelse(bh); | |
2076 | + kmem_cache_free(ocfs2_qf_chunk_cachep, chunk); | |
2077 | + return ERR_PTR(status); | |
2078 | +} | |
2079 | + | |
2080 | +/* Find free entry in local quota file */ | |
2081 | +static struct ocfs2_quota_chunk *ocfs2_extend_local_quota_file( | |
2082 | + struct super_block *sb, | |
2083 | + int type, | |
2084 | + int *offset) | |
2085 | +{ | |
2086 | + struct mem_dqinfo *info = sb_dqinfo(sb, type); | |
2087 | + struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; | |
2088 | + struct ocfs2_quota_chunk *chunk; | |
2089 | + struct inode *lqinode = sb_dqopt(sb)->files[type]; | |
2090 | + struct ocfs2_local_disk_chunk *dchunk; | |
2091 | + int epb = ol_quota_entries_per_block(sb); | |
2092 | + unsigned int chunk_blocks; | |
2093 | + int status; | |
2094 | + handle_t *handle; | |
2095 | + | |
2096 | + if (list_empty(&oinfo->dqi_chunk)) | |
2097 | + return ocfs2_local_quota_add_chunk(sb, type, offset); | |
2098 | + /* Is the last chunk full? */ | |
2099 | + chunk = list_entry(oinfo->dqi_chunk.prev, | |
2100 | + struct ocfs2_quota_chunk, qc_chunk); | |
2101 | + chunk_blocks = oinfo->dqi_blocks - | |
2102 | + ol_quota_chunk_block(sb, chunk->qc_num) - 1; | |
2103 | + if (ol_chunk_blocks(sb) == chunk_blocks) | |
2104 | + return ocfs2_local_quota_add_chunk(sb, type, offset); | |
2105 | + | |
2106 | + /* We are protected by dqio_sem so no locking needed */ | |
2107 | + status = ocfs2_extend_no_holes(lqinode, | |
2108 | + lqinode->i_size + sb->s_blocksize, | |
2109 | + lqinode->i_size); | |
2110 | + if (status < 0) { | |
2111 | + mlog_errno(status); | |
2112 | + goto out; | |
2113 | + } | |
2114 | + status = ocfs2_simple_size_update(lqinode, oinfo->dqi_lqi_bh, | |
2115 | + lqinode->i_size + sb->s_blocksize); | |
2116 | + if (status < 0) { | |
2117 | + mlog_errno(status); | |
2118 | + goto out; | |
2119 | + } | |
2120 | + handle = ocfs2_start_trans(OCFS2_SB(sb), 2); | |
2121 | + if (IS_ERR(handle)) { | |
2122 | + status = PTR_ERR(handle); | |
2123 | + mlog_errno(status); | |
2124 | + goto out; | |
2125 | + } | |
2126 | + status = ocfs2_journal_access(handle, lqinode, chunk->qc_headerbh, | |
2127 | + OCFS2_JOURNAL_ACCESS_WRITE); | |
2128 | + if (status < 0) { | |
2129 | + mlog_errno(status); | |
2130 | + goto out_trans; | |
2131 | + } | |
2132 | + | |
2133 | + dchunk = (struct ocfs2_local_disk_chunk *)chunk->qc_headerbh->b_data; | |
2134 | + lock_buffer(chunk->qc_headerbh); | |
2135 | + le32_add_cpu(&dchunk->dqc_free, ol_quota_entries_per_block(sb)); | |
2136 | + unlock_buffer(chunk->qc_headerbh); | |
2137 | + status = ocfs2_journal_dirty(handle, chunk->qc_headerbh); | |
2138 | + if (status < 0) { | |
2139 | + mlog_errno(status); | |
2140 | + goto out_trans; | |
2141 | + } | |
2142 | + oinfo->dqi_blocks++; | |
2143 | + status = ocfs2_local_write_info(sb, type); | |
2144 | + if (status < 0) { | |
2145 | + mlog_errno(status); | |
2146 | + goto out_trans; | |
2147 | + } | |
2148 | + | |
2149 | + status = ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
2150 | + if (status < 0) { | |
2151 | + mlog_errno(status); | |
2152 | + goto out; | |
2153 | + } | |
2154 | + *offset = chunk_blocks * epb; | |
2155 | + return chunk; | |
2156 | +out_trans: | |
2157 | + ocfs2_commit_trans(OCFS2_SB(sb), handle); | |
2158 | +out: | |
2159 | + return ERR_PTR(status); | |
2160 | +} | |
2161 | + | |
2162 | +void olq_alloc_dquot(struct buffer_head *bh, void *private) | |
2163 | +{ | |
2164 | + int *offset = private; | |
2165 | + struct ocfs2_local_disk_chunk *dchunk; | |
2166 | + | |
2167 | + dchunk = (struct ocfs2_local_disk_chunk *)bh->b_data; | |
2168 | + ocfs2_set_bit(*offset, dchunk->dqc_bitmap); | |
2169 | + le32_add_cpu(&dchunk->dqc_free, -1); | |
2170 | +} | |
2171 | + | |
2172 | +/* Create dquot in the local file for given id */ | |
2173 | +static int ocfs2_create_local_dquot(struct dquot *dquot) | |
2174 | +{ | |
2175 | + struct super_block *sb = dquot->dq_sb; | |
2176 | + int type = dquot->dq_type; | |
2177 | + struct inode *lqinode = sb_dqopt(sb)->files[type]; | |
2178 | + struct ocfs2_quota_chunk *chunk; | |
2179 | + struct ocfs2_dquot *od = OCFS2_DQUOT(dquot); | |
2180 | + int offset; | |
2181 | + int status; | |
2182 | + | |
2183 | + chunk = ocfs2_find_free_entry(sb, type, &offset); | |
2184 | + if (!chunk) { | |
2185 | + chunk = ocfs2_extend_local_quota_file(sb, type, &offset); | |
2186 | + if (IS_ERR(chunk)) | |
2187 | + return PTR_ERR(chunk); | |
2188 | + } else if (IS_ERR(chunk)) { | |
2189 | + return PTR_ERR(chunk); | |
2190 | + } | |
2191 | + od->dq_local_off = ol_dqblk_off(sb, chunk->qc_num, offset); | |
2192 | + od->dq_chunk = chunk; | |
2193 | + | |
2194 | + /* Initialize dquot structure on disk */ | |
2195 | + status = ocfs2_local_write_dquot(dquot); | |
2196 | + if (status < 0) { | |
2197 | + mlog_errno(status); | |
2198 | + goto out; | |
2199 | + } | |
2200 | + | |
2201 | + /* Mark structure as allocated */ | |
2202 | + status = ocfs2_modify_bh(lqinode, chunk->qc_headerbh, olq_alloc_dquot, | |
2203 | + &offset); | |
2204 | + if (status < 0) { | |
2205 | + mlog_errno(status); | |
2206 | + goto out; | |
2207 | + } | |
2208 | +out: | |
2209 | + return status; | |
2210 | +} | |
2211 | + | |
2212 | +/* Create entry in local file for dquot, load data from the global file */ | |
2213 | +static int ocfs2_local_read_dquot(struct dquot *dquot) | |
2214 | +{ | |
2215 | + int status; | |
2216 | + | |
2217 | + mlog_entry("id=%u, type=%d\n", dquot->dq_id, dquot->dq_type); | |
2218 | + | |
2219 | + status = ocfs2_global_read_dquot(dquot); | |
2220 | + if (status < 0) { | |
2221 | + mlog_errno(status); | |
2222 | + goto out_err; | |
2223 | + } | |
2224 | + | |
2225 | + /* Now create entry in the local quota file */ | |
2226 | + status = ocfs2_create_local_dquot(dquot); | |
2227 | + if (status < 0) { | |
2228 | + mlog_errno(status); | |
2229 | + goto out_err; | |
2230 | + } | |
2231 | + mlog_exit(0); | |
2232 | + return 0; | |
2233 | +out_err: | |
2234 | + mlog_exit(status); | |
2235 | + return status; | |
2236 | +} | |
2237 | + | |
2238 | +/* Release dquot structure from local quota file. ocfs2_release_dquot() has | |
2239 | + * already started a transaction and obtained exclusive lock for global | |
2240 | + * quota file. */ | |
2241 | +static int ocfs2_local_release_dquot(struct dquot *dquot) | |
2242 | +{ | |
2243 | + int status; | |
2244 | + int type = dquot->dq_type; | |
2245 | + struct ocfs2_dquot *od = OCFS2_DQUOT(dquot); | |
2246 | + struct super_block *sb = dquot->dq_sb; | |
2247 | + struct ocfs2_local_disk_chunk *dchunk; | |
2248 | + int offset; | |
2249 | + handle_t *handle = journal_current_handle(); | |
2250 | + | |
2251 | + BUG_ON(!handle); | |
2252 | + /* First write all local changes to global file */ | |
2253 | + status = ocfs2_global_release_dquot(dquot); | |
2254 | + if (status < 0) { | |
2255 | + mlog_errno(status); | |
2256 | + goto out; | |
2257 | + } | |
2258 | + | |
2259 | + status = ocfs2_journal_access(handle, sb_dqopt(sb)->files[type], | |
2260 | + od->dq_chunk->qc_headerbh, OCFS2_JOURNAL_ACCESS_WRITE); | |
2261 | + if (status < 0) { | |
2262 | + mlog_errno(status); | |
2263 | + goto out; | |
2264 | + } | |
2265 | + offset = ol_dqblk_chunk_off(sb, od->dq_chunk->qc_num, | |
2266 | + od->dq_local_off); | |
2267 | + dchunk = (struct ocfs2_local_disk_chunk *) | |
2268 | + (od->dq_chunk->qc_headerbh->b_data); | |
2269 | + /* Mark structure as freed */ | |
2270 | + lock_buffer(od->dq_chunk->qc_headerbh); | |
2271 | + ocfs2_clear_bit(offset, dchunk->dqc_bitmap); | |
2272 | + le32_add_cpu(&dchunk->dqc_free, 1); | |
2273 | + unlock_buffer(od->dq_chunk->qc_headerbh); | |
2274 | + status = ocfs2_journal_dirty(handle, od->dq_chunk->qc_headerbh); | |
2275 | + if (status < 0) { | |
2276 | + mlog_errno(status); | |
2277 | + goto out; | |
2278 | + } | |
2279 | + status = 0; | |
2280 | +out: | |
2281 | + /* Clear the read bit so that next time someone uses this | |
2282 | + * dquot he reads fresh info from disk and allocates local | |
2283 | + * dquot structure */ | |
2284 | + clear_bit(DQ_READ_B, &dquot->dq_flags); | |
2285 | + return status; | |
2286 | +} | |
2287 | + | |
2288 | +static struct quota_format_ops ocfs2_format_ops = { | |
2289 | + .check_quota_file = ocfs2_local_check_quota_file, | |
2290 | + .read_file_info = ocfs2_local_read_info, | |
2291 | + .write_file_info = ocfs2_global_write_info, | |
2292 | + .free_file_info = ocfs2_local_free_info, | |
2293 | + .read_dqblk = ocfs2_local_read_dquot, | |
2294 | + .commit_dqblk = ocfs2_local_write_dquot, | |
2295 | + .release_dqblk = ocfs2_local_release_dquot, | |
2296 | +}; | |
2297 | + | |
2298 | +static struct quota_format_type ocfs2_quota_format = { | |
2299 | + .qf_fmt_id = QFMT_OCFS2, | |
2300 | + .qf_ops = &ocfs2_format_ops, | |
2301 | + .qf_owner = THIS_MODULE | |
2302 | +}; | |
2303 | + | |
2304 | +int init_ocfs2_quota_format(void) | |
2305 | +{ | |
2306 | + return register_quota_format(&ocfs2_quota_format); | |
2307 | +} | |
2308 | + | |
2309 | +void exit_ocfs2_quota_format(void) | |
2310 | +{ | |
2311 | + unregister_quota_format(&ocfs2_quota_format); | |
2312 | +} | |
2313 | Index: linux-2.6.27-ocfs2/fs/ocfs2/super.c | |
2314 | =================================================================== | |
2315 | --- linux-2.6.27-ocfs2.orig/fs/ocfs2/super.c | |
2316 | +++ linux-2.6.27-ocfs2/fs/ocfs2/super.c | |
2317 | @@ -65,10 +65,13 @@ | |
2318 | #include "uptodate.h" | |
2319 | #include "ver.h" | |
2320 | #include "xattr.h" | |
2321 | +#include "quota.h" | |
2322 | ||
2323 | #include "buffer_head_io.h" | |
2324 | ||
2325 | static struct kmem_cache *ocfs2_inode_cachep = NULL; | |
2326 | +struct kmem_cache *ocfs2_dquot_cachep; | |
2327 | +struct kmem_cache *ocfs2_qf_chunk_cachep; | |
2328 | ||
2329 | /* OCFS2 needs to schedule several differnt types of work which | |
2330 | * require cluster locking, disk I/O, recovery waits, etc. Since these | |
2331 | @@ -137,6 +140,8 @@ static const struct super_operations ocf | |
2332 | .put_super = ocfs2_put_super, | |
2333 | .remount_fs = ocfs2_remount, | |
2334 | .show_options = ocfs2_show_options, | |
2335 | + .quota_read = ocfs2_quota_read, | |
2336 | + .quota_write = ocfs2_quota_write, | |
2337 | }; | |
2338 | ||
2339 | enum { | |
2340 | @@ -1073,6 +1078,7 @@ static int ocfs2_show_options(struct seq | |
2341 | static int __init ocfs2_init(void) | |
2342 | { | |
2343 | int status; | |
2344 | + int added_format = 0; | |
2345 | ||
2346 | mlog_entry_void(); | |
2347 | ||
2348 | @@ -1090,6 +1096,13 @@ static int __init ocfs2_init(void) | |
2349 | goto leave; | |
2350 | } | |
2351 | ||
2352 | + status = init_ocfs2_quota_format(); | |
2353 | + if (status < 0) { | |
2354 | + mlog_errno(status); | |
2355 | + goto leave; | |
2356 | + } | |
2357 | + added_format = 1; | |
2358 | + | |
2359 | ocfs2_wq = create_singlethread_workqueue("ocfs2_wq"); | |
2360 | if (!ocfs2_wq) { | |
2361 | status = -ENOMEM; | |
2362 | @@ -1108,6 +1121,8 @@ leave: | |
2363 | if (status < 0) { | |
2364 | ocfs2_free_mem_caches(); | |
2365 | exit_ocfs2_uptodate_cache(); | |
2366 | + if (added_format) | |
2367 | + exit_ocfs2_quota_format(); | |
2368 | } | |
2369 | ||
2370 | mlog_exit(status); | |
2371 | @@ -1127,6 +1142,8 @@ static void __exit ocfs2_exit(void) | |
2372 | destroy_workqueue(ocfs2_wq); | |
2373 | } | |
2374 | ||
2375 | + exit_ocfs2_quota_format(); | |
2376 | + | |
2377 | debugfs_remove(ocfs2_debugfs_root); | |
2378 | ||
2379 | ocfs2_free_mem_caches(); | |
2380 | @@ -1242,8 +1259,27 @@ static int ocfs2_initialize_mem_caches(v | |
2381 | (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT| | |
2382 | SLAB_MEM_SPREAD), | |
2383 | ocfs2_inode_init_once); | |
2384 | - if (!ocfs2_inode_cachep) | |
2385 | + ocfs2_dquot_cachep = kmem_cache_create("ocfs2_dquot_cache", | |
2386 | + sizeof(struct ocfs2_dquot), | |
2387 | + 0, | |
2388 | + (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT| | |
2389 | + SLAB_MEM_SPREAD), | |
2390 | + NULL); | |
2391 | + ocfs2_qf_chunk_cachep = kmem_cache_create("ocfs2_qf_chunk_cache", | |
2392 | + sizeof(struct ocfs2_quota_chunk), | |
2393 | + 0, | |
2394 | + (SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD), | |
2395 | + NULL); | |
2396 | + if (!ocfs2_inode_cachep || !ocfs2_dquot_cachep || | |
2397 | + !ocfs2_qf_chunk_cachep) { | |
2398 | + if (ocfs2_inode_cachep) | |
2399 | + kmem_cache_destroy(ocfs2_inode_cachep); | |
2400 | + if (ocfs2_dquot_cachep) | |
2401 | + kmem_cache_destroy(ocfs2_dquot_cachep); | |
2402 | + if (ocfs2_qf_chunk_cachep) | |
2403 | + kmem_cache_destroy(ocfs2_qf_chunk_cachep); | |
2404 | return -ENOMEM; | |
2405 | + } | |
2406 | ||
2407 | return 0; | |
2408 | } | |
2409 | @@ -1252,8 +1288,15 @@ static void ocfs2_free_mem_caches(void) | |
2410 | { | |
2411 | if (ocfs2_inode_cachep) | |
2412 | kmem_cache_destroy(ocfs2_inode_cachep); | |
2413 | - | |
2414 | ocfs2_inode_cachep = NULL; | |
2415 | + | |
2416 | + if (ocfs2_dquot_cachep) | |
2417 | + kmem_cache_destroy(ocfs2_dquot_cachep); | |
2418 | + ocfs2_dquot_cachep = NULL; | |
2419 | + | |
2420 | + if (ocfs2_qf_chunk_cachep) | |
2421 | + kmem_cache_destroy(ocfs2_qf_chunk_cachep); | |
2422 | + ocfs2_qf_chunk_cachep = NULL; | |
2423 | } | |
2424 | ||
2425 | static int ocfs2_get_sector(struct super_block *sb, | |
2426 | Index: linux-2.6.27-ocfs2/fs/ocfs2/dir.c | |
2427 | =================================================================== | |
2428 | --- linux-2.6.27-ocfs2.orig/fs/ocfs2/dir.c | |
2429 | +++ linux-2.6.27-ocfs2/fs/ocfs2/dir.c | |
2430 | @@ -82,8 +82,8 @@ static int ocfs2_do_extend_dir(struct su | |
2431 | struct ocfs2_alloc_context *meta_ac, | |
2432 | struct buffer_head **new_bh); | |
2433 | ||
2434 | -static struct buffer_head *ocfs2_bread(struct inode *inode, | |
2435 | - int block, int *err, int reada) | |
2436 | +struct buffer_head *ocfs2_bread(struct inode *inode, | |
2437 | + int block, int *err, int reada) | |
2438 | { | |
2439 | struct buffer_head *bh = NULL; | |
2440 | int tmperr; | |
2441 | Index: linux-2.6.27-ocfs2/fs/ocfs2/inode.h | |
2442 | =================================================================== | |
2443 | --- linux-2.6.27-ocfs2.orig/fs/ocfs2/inode.h | |
2444 | +++ linux-2.6.27-ocfs2/fs/ocfs2/inode.h | |
2445 | @@ -142,6 +142,8 @@ int ocfs2_mark_inode_dirty(handle_t *han | |
2446 | struct buffer_head *bh); | |
2447 | int ocfs2_aio_read(struct file *file, struct kiocb *req, struct iocb *iocb); | |
2448 | int ocfs2_aio_write(struct file *file, struct kiocb *req, struct iocb *iocb); | |
2449 | +struct buffer_head *ocfs2_bread(struct inode *inode, | |
2450 | + int block, int *err, int reada); | |
2451 | ||
2452 | void ocfs2_set_inode_flags(struct inode *inode); | |
2453 | void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi); |