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1da177e4 LT |
1 | /* |
2 | * Copyright (C) International Business Machines Corp., 2000-2004 | |
3 | * Portions Copyright (C) Christoph Hellwig, 2001-2002 | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
63f83c9f | 7 | * the Free Software Foundation; either version 2 of the License, or |
1da177e4 | 8 | * (at your option) any later version. |
63f83c9f | 9 | * |
1da177e4 LT |
10 | * This program is distributed in the hope that it will be useful, |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
13 | * the GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
63f83c9f | 16 | * along with this program; if not, write to the Free Software |
1da177e4 LT |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
18 | */ | |
19 | ||
20 | #include <linux/fs.h> | |
1da177e4 LT |
21 | #include <linux/module.h> |
22 | #include <linux/parser.h> | |
23 | #include <linux/completion.h> | |
24 | #include <linux/vfs.h> | |
74abb989 | 25 | #include <linux/quotaops.h> |
8fc2751b | 26 | #include <linux/mount.h> |
1da177e4 | 27 | #include <linux/moduleparam.h> |
91dbb4de | 28 | #include <linux/kthread.h> |
9a59f452 | 29 | #include <linux/posix_acl.h> |
115ff50b | 30 | #include <linux/buffer_head.h> |
a5694255 | 31 | #include <linux/exportfs.h> |
b5c816a4 | 32 | #include <linux/crc32.h> |
5a0e3ad6 | 33 | #include <linux/slab.h> |
7c0f6ba6 | 34 | #include <linux/uaccess.h> |
8fc2751b | 35 | #include <linux/seq_file.h> |
b40c2e66 | 36 | #include <linux/blkdev.h> |
1da177e4 LT |
37 | |
38 | #include "jfs_incore.h" | |
39 | #include "jfs_filsys.h" | |
1868f4aa | 40 | #include "jfs_inode.h" |
1da177e4 LT |
41 | #include "jfs_metapage.h" |
42 | #include "jfs_superblock.h" | |
43 | #include "jfs_dmap.h" | |
44 | #include "jfs_imap.h" | |
45 | #include "jfs_acl.h" | |
46 | #include "jfs_debug.h" | |
2cc6a5a0 | 47 | #include "jfs_xattr.h" |
12fd086d | 48 | #include "jfs_dinode.h" |
1da177e4 LT |
49 | |
50 | MODULE_DESCRIPTION("The Journaled Filesystem (JFS)"); | |
51 | MODULE_AUTHOR("Steve Best/Dave Kleikamp/Barry Arndt, IBM"); | |
52 | MODULE_LICENSE("GPL"); | |
53 | ||
789602e9 | 54 | static struct kmem_cache *jfs_inode_cachep; |
1da177e4 | 55 | |
ee9b6d61 | 56 | static const struct super_operations jfs_super_operations; |
39655164 | 57 | static const struct export_operations jfs_export_operations; |
1da177e4 LT |
58 | static struct file_system_type jfs_fs_type; |
59 | ||
60 | #define MAX_COMMIT_THREADS 64 | |
789602e9 | 61 | static int commit_threads; |
1da177e4 LT |
62 | module_param(commit_threads, int, 0); |
63 | MODULE_PARM_DESC(commit_threads, "Number of commit threads"); | |
64 | ||
91dbb4de CH |
65 | static struct task_struct *jfsCommitThread[MAX_COMMIT_THREADS]; |
66 | struct task_struct *jfsIOthread; | |
67 | struct task_struct *jfsSyncThread; | |
1da177e4 LT |
68 | |
69 | #ifdef CONFIG_JFS_DEBUG | |
70 | int jfsloglevel = JFS_LOGLEVEL_WARN; | |
71 | module_param(jfsloglevel, int, 0644); | |
72 | MODULE_PARM_DESC(jfsloglevel, "Specify JFS loglevel (0, 1 or 2)"); | |
73 | #endif | |
74 | ||
1da177e4 LT |
75 | static void jfs_handle_error(struct super_block *sb) |
76 | { | |
77 | struct jfs_sb_info *sbi = JFS_SBI(sb); | |
78 | ||
79 | if (sb->s_flags & MS_RDONLY) | |
80 | return; | |
81 | ||
82 | updateSuper(sb, FM_DIRTY); | |
83 | ||
84 | if (sbi->flag & JFS_ERR_PANIC) | |
85 | panic("JFS (device %s): panic forced after error\n", | |
86 | sb->s_id); | |
87 | else if (sbi->flag & JFS_ERR_REMOUNT_RO) { | |
b18db6de | 88 | jfs_err("ERROR: (device %s): remounting filesystem as read-only", |
1da177e4 LT |
89 | sb->s_id); |
90 | sb->s_flags |= MS_RDONLY; | |
63f83c9f | 91 | } |
1da177e4 LT |
92 | |
93 | /* nothing is done for continue beyond marking the superblock dirty */ | |
94 | } | |
95 | ||
eb8630d7 | 96 | void jfs_error(struct super_block *sb, const char *fmt, ...) |
1da177e4 | 97 | { |
eb8630d7 | 98 | struct va_format vaf; |
1da177e4 LT |
99 | va_list args; |
100 | ||
eb8630d7 JP |
101 | va_start(args, fmt); |
102 | ||
103 | vaf.fmt = fmt; | |
104 | vaf.va = &args; | |
1da177e4 | 105 | |
7d2ac456 | 106 | pr_err("ERROR: (device %s): %ps: %pV\n", |
eb8630d7 JP |
107 | sb->s_id, __builtin_return_address(0), &vaf); |
108 | ||
109 | va_end(args); | |
1da177e4 LT |
110 | |
111 | jfs_handle_error(sb); | |
112 | } | |
113 | ||
114 | static struct inode *jfs_alloc_inode(struct super_block *sb) | |
115 | { | |
116 | struct jfs_inode_info *jfs_inode; | |
117 | ||
118 | jfs_inode = kmem_cache_alloc(jfs_inode_cachep, GFP_NOFS); | |
119 | if (!jfs_inode) | |
120 | return NULL; | |
507e1fa6 JK |
121 | #ifdef CONFIG_QUOTA |
122 | memset(&jfs_inode->i_dquot, 0, sizeof(jfs_inode->i_dquot)); | |
123 | #endif | |
1da177e4 LT |
124 | return &jfs_inode->vfs_inode; |
125 | } | |
126 | ||
fa0d7e3d NP |
127 | static void jfs_i_callback(struct rcu_head *head) |
128 | { | |
129 | struct inode *inode = container_of(head, struct inode, i_rcu); | |
130 | struct jfs_inode_info *ji = JFS_IP(inode); | |
fa0d7e3d NP |
131 | kmem_cache_free(jfs_inode_cachep, ji); |
132 | } | |
133 | ||
1da177e4 LT |
134 | static void jfs_destroy_inode(struct inode *inode) |
135 | { | |
136 | struct jfs_inode_info *ji = JFS_IP(inode); | |
137 | ||
8a9cd6d6 DK |
138 | BUG_ON(!list_empty(&ji->anon_inode_list)); |
139 | ||
1da177e4 LT |
140 | spin_lock_irq(&ji->ag_lock); |
141 | if (ji->active_ag != -1) { | |
142 | struct bmap *bmap = JFS_SBI(inode->i_sb)->bmap; | |
143 | atomic_dec(&bmap->db_active[ji->active_ag]); | |
144 | ji->active_ag = -1; | |
145 | } | |
146 | spin_unlock_irq(&ji->ag_lock); | |
fa0d7e3d | 147 | call_rcu(&inode->i_rcu, jfs_i_callback); |
1da177e4 LT |
148 | } |
149 | ||
726c3342 | 150 | static int jfs_statfs(struct dentry *dentry, struct kstatfs *buf) |
1da177e4 | 151 | { |
726c3342 | 152 | struct jfs_sb_info *sbi = JFS_SBI(dentry->d_sb); |
1da177e4 LT |
153 | s64 maxinodes; |
154 | struct inomap *imap = JFS_IP(sbi->ipimap)->i_imap; | |
155 | ||
156 | jfs_info("In jfs_statfs"); | |
157 | buf->f_type = JFS_SUPER_MAGIC; | |
158 | buf->f_bsize = sbi->bsize; | |
159 | buf->f_blocks = sbi->bmap->db_mapsize; | |
160 | buf->f_bfree = sbi->bmap->db_nfree; | |
161 | buf->f_bavail = sbi->bmap->db_nfree; | |
162 | /* | |
163 | * If we really return the number of allocated & free inodes, some | |
164 | * applications will fail because they won't see enough free inodes. | |
4de80273 | 165 | * We'll try to calculate some guess as to how many inodes we can |
1da177e4 LT |
166 | * really allocate |
167 | * | |
168 | * buf->f_files = atomic_read(&imap->im_numinos); | |
169 | * buf->f_ffree = atomic_read(&imap->im_numfree); | |
170 | */ | |
171 | maxinodes = min((s64) atomic_read(&imap->im_numinos) + | |
172 | ((sbi->bmap->db_nfree >> imap->im_l2nbperiext) | |
173 | << L2INOSPEREXT), (s64) 0xffffffffLL); | |
174 | buf->f_files = maxinodes; | |
175 | buf->f_ffree = maxinodes - (atomic_read(&imap->im_numinos) - | |
176 | atomic_read(&imap->im_numfree)); | |
b5c816a4 CL |
177 | buf->f_fsid.val[0] = (u32)crc32_le(0, sbi->uuid, sizeof(sbi->uuid)/2); |
178 | buf->f_fsid.val[1] = (u32)crc32_le(0, sbi->uuid + sizeof(sbi->uuid)/2, | |
179 | sizeof(sbi->uuid)/2); | |
1da177e4 LT |
180 | |
181 | buf->f_namelen = JFS_NAME_MAX; | |
182 | return 0; | |
183 | } | |
184 | ||
12fd086d JK |
185 | #ifdef CONFIG_QUOTA |
186 | static int jfs_quota_off(struct super_block *sb, int type); | |
187 | static int jfs_quota_on(struct super_block *sb, int type, int format_id, | |
188 | const struct path *path); | |
189 | ||
190 | static void jfs_quota_off_umount(struct super_block *sb) | |
191 | { | |
192 | int type; | |
193 | ||
194 | for (type = 0; type < MAXQUOTAS; type++) | |
195 | jfs_quota_off(sb, type); | |
196 | } | |
197 | ||
198 | static const struct quotactl_ops jfs_quotactl_ops = { | |
199 | .quota_on = jfs_quota_on, | |
200 | .quota_off = jfs_quota_off, | |
201 | .quota_sync = dquot_quota_sync, | |
202 | .get_state = dquot_get_state, | |
203 | .set_info = dquot_set_dqinfo, | |
204 | .get_dqblk = dquot_get_dqblk, | |
205 | .set_dqblk = dquot_set_dqblk, | |
206 | .get_nextdqblk = dquot_get_next_dqblk, | |
207 | }; | |
208 | #else | |
209 | static inline void jfs_quota_off_umount(struct super_block *sb) | |
210 | { | |
211 | } | |
212 | #endif | |
213 | ||
1da177e4 LT |
214 | static void jfs_put_super(struct super_block *sb) |
215 | { | |
216 | struct jfs_sb_info *sbi = JFS_SBI(sb); | |
217 | int rc; | |
218 | ||
219 | jfs_info("In jfs_put_super"); | |
6cfd0148 | 220 | |
12fd086d | 221 | jfs_quota_off_umount(sb); |
e0ccfd95 | 222 | |
1da177e4 LT |
223 | rc = jfs_umount(sb); |
224 | if (rc) | |
225 | jfs_err("jfs_umount failed with return code %d", rc); | |
6d729e44 TG |
226 | |
227 | unload_nls(sbi->nls_tab); | |
1da177e4 | 228 | |
7fab479b DK |
229 | truncate_inode_pages(sbi->direct_inode->i_mapping, 0); |
230 | iput(sbi->direct_inode); | |
7fab479b | 231 | |
1da177e4 LT |
232 | kfree(sbi); |
233 | } | |
234 | ||
235 | enum { | |
236 | Opt_integrity, Opt_nointegrity, Opt_iocharset, Opt_resize, | |
8fc2751b | 237 | Opt_resize_nosize, Opt_errors, Opt_ignore, Opt_err, Opt_quota, |
b40c2e66 TR |
238 | Opt_usrquota, Opt_grpquota, Opt_uid, Opt_gid, Opt_umask, |
239 | Opt_discard, Opt_nodiscard, Opt_discard_minblk | |
1da177e4 LT |
240 | }; |
241 | ||
a447c093 | 242 | static const match_table_t tokens = { |
1da177e4 LT |
243 | {Opt_integrity, "integrity"}, |
244 | {Opt_nointegrity, "nointegrity"}, | |
245 | {Opt_iocharset, "iocharset=%s"}, | |
246 | {Opt_resize, "resize=%u"}, | |
247 | {Opt_resize_nosize, "resize"}, | |
248 | {Opt_errors, "errors=%s"}, | |
249 | {Opt_ignore, "noquota"}, | |
250 | {Opt_ignore, "quota"}, | |
8fc2751b MB |
251 | {Opt_usrquota, "usrquota"}, |
252 | {Opt_grpquota, "grpquota"}, | |
69eb66d7 DK |
253 | {Opt_uid, "uid=%u"}, |
254 | {Opt_gid, "gid=%u"}, | |
255 | {Opt_umask, "umask=%u"}, | |
b40c2e66 TR |
256 | {Opt_discard, "discard"}, |
257 | {Opt_nodiscard, "nodiscard"}, | |
258 | {Opt_discard_minblk, "discard=%u"}, | |
1da177e4 LT |
259 | {Opt_err, NULL} |
260 | }; | |
261 | ||
262 | static int parse_options(char *options, struct super_block *sb, s64 *newLVSize, | |
263 | int *flag) | |
264 | { | |
265 | void *nls_map = (void *)-1; /* -1: no change; NULL: none */ | |
266 | char *p; | |
267 | struct jfs_sb_info *sbi = JFS_SBI(sb); | |
268 | ||
269 | *newLVSize = 0; | |
270 | ||
271 | if (!options) | |
272 | return 1; | |
273 | ||
274 | while ((p = strsep(&options, ",")) != NULL) { | |
275 | substring_t args[MAX_OPT_ARGS]; | |
276 | int token; | |
277 | if (!*p) | |
278 | continue; | |
279 | ||
280 | token = match_token(p, tokens, args); | |
281 | switch (token) { | |
282 | case Opt_integrity: | |
283 | *flag &= ~JFS_NOINTEGRITY; | |
284 | break; | |
285 | case Opt_nointegrity: | |
286 | *flag |= JFS_NOINTEGRITY; | |
287 | break; | |
288 | case Opt_ignore: | |
289 | /* Silently ignore the quota options */ | |
290 | /* Don't do anything ;-) */ | |
291 | break; | |
292 | case Opt_iocharset: | |
293 | if (nls_map && nls_map != (void *) -1) | |
294 | unload_nls(nls_map); | |
295 | if (!strcmp(args[0].from, "none")) | |
296 | nls_map = NULL; | |
297 | else { | |
298 | nls_map = load_nls(args[0].from); | |
299 | if (!nls_map) { | |
b40c2e66 | 300 | pr_err("JFS: charset not found\n"); |
1da177e4 LT |
301 | goto cleanup; |
302 | } | |
303 | } | |
304 | break; | |
305 | case Opt_resize: | |
306 | { | |
307 | char *resize = args[0].from; | |
bb5e50aa FF |
308 | int rc = kstrtoll(resize, 0, newLVSize); |
309 | ||
310 | if (rc) | |
311 | goto cleanup; | |
1da177e4 LT |
312 | break; |
313 | } | |
314 | case Opt_resize_nosize: | |
315 | { | |
684666e5 | 316 | *newLVSize = i_size_read(sb->s_bdev->bd_inode) >> |
1da177e4 LT |
317 | sb->s_blocksize_bits; |
318 | if (*newLVSize == 0) | |
b40c2e66 | 319 | pr_err("JFS: Cannot determine volume size\n"); |
1da177e4 LT |
320 | break; |
321 | } | |
322 | case Opt_errors: | |
323 | { | |
324 | char *errors = args[0].from; | |
325 | if (!errors || !*errors) | |
326 | goto cleanup; | |
327 | if (!strcmp(errors, "continue")) { | |
328 | *flag &= ~JFS_ERR_REMOUNT_RO; | |
329 | *flag &= ~JFS_ERR_PANIC; | |
330 | *flag |= JFS_ERR_CONTINUE; | |
331 | } else if (!strcmp(errors, "remount-ro")) { | |
332 | *flag &= ~JFS_ERR_CONTINUE; | |
333 | *flag &= ~JFS_ERR_PANIC; | |
334 | *flag |= JFS_ERR_REMOUNT_RO; | |
335 | } else if (!strcmp(errors, "panic")) { | |
336 | *flag &= ~JFS_ERR_CONTINUE; | |
337 | *flag &= ~JFS_ERR_REMOUNT_RO; | |
338 | *flag |= JFS_ERR_PANIC; | |
339 | } else { | |
b40c2e66 | 340 | pr_err("JFS: %s is an invalid error handler\n", |
1da177e4 LT |
341 | errors); |
342 | goto cleanup; | |
343 | } | |
344 | break; | |
345 | } | |
8fc2751b | 346 | |
115ff50b | 347 | #ifdef CONFIG_QUOTA |
8fc2751b MB |
348 | case Opt_quota: |
349 | case Opt_usrquota: | |
350 | *flag |= JFS_USRQUOTA; | |
351 | break; | |
352 | case Opt_grpquota: | |
353 | *flag |= JFS_GRPQUOTA; | |
354 | break; | |
355 | #else | |
356 | case Opt_usrquota: | |
357 | case Opt_grpquota: | |
358 | case Opt_quota: | |
b40c2e66 | 359 | pr_err("JFS: quota operations not supported\n"); |
8fc2751b MB |
360 | break; |
361 | #endif | |
69eb66d7 DK |
362 | case Opt_uid: |
363 | { | |
364 | char *uid = args[0].from; | |
bb5e50aa FF |
365 | uid_t val; |
366 | int rc = kstrtouint(uid, 0, &val); | |
367 | ||
368 | if (rc) | |
369 | goto cleanup; | |
c18cdc1a EB |
370 | sbi->uid = make_kuid(current_user_ns(), val); |
371 | if (!uid_valid(sbi->uid)) | |
372 | goto cleanup; | |
69eb66d7 DK |
373 | break; |
374 | } | |
b40c2e66 | 375 | |
69eb66d7 DK |
376 | case Opt_gid: |
377 | { | |
378 | char *gid = args[0].from; | |
bb5e50aa FF |
379 | gid_t val; |
380 | int rc = kstrtouint(gid, 0, &val); | |
381 | ||
382 | if (rc) | |
383 | goto cleanup; | |
c18cdc1a EB |
384 | sbi->gid = make_kgid(current_user_ns(), val); |
385 | if (!gid_valid(sbi->gid)) | |
386 | goto cleanup; | |
69eb66d7 DK |
387 | break; |
388 | } | |
b40c2e66 | 389 | |
69eb66d7 DK |
390 | case Opt_umask: |
391 | { | |
392 | char *umask = args[0].from; | |
bb5e50aa FF |
393 | int rc = kstrtouint(umask, 8, &sbi->umask); |
394 | ||
395 | if (rc) | |
396 | goto cleanup; | |
69eb66d7 | 397 | if (sbi->umask & ~0777) { |
b40c2e66 | 398 | pr_err("JFS: Invalid value of umask\n"); |
69eb66d7 DK |
399 | goto cleanup; |
400 | } | |
401 | break; | |
402 | } | |
b40c2e66 TR |
403 | |
404 | case Opt_discard: | |
405 | { | |
406 | struct request_queue *q = bdev_get_queue(sb->s_bdev); | |
407 | /* if set to 1, even copying files will cause | |
408 | * trimming :O | |
409 | * -> user has more control over the online trimming | |
410 | */ | |
411 | sbi->minblks_trim = 64; | |
789602e9 | 412 | if (blk_queue_discard(q)) |
b40c2e66 | 413 | *flag |= JFS_DISCARD; |
789602e9 FF |
414 | else |
415 | pr_err("JFS: discard option not supported on device\n"); | |
b40c2e66 TR |
416 | break; |
417 | } | |
418 | ||
419 | case Opt_nodiscard: | |
420 | *flag &= ~JFS_DISCARD; | |
421 | break; | |
422 | ||
423 | case Opt_discard_minblk: | |
424 | { | |
425 | struct request_queue *q = bdev_get_queue(sb->s_bdev); | |
426 | char *minblks_trim = args[0].from; | |
bb5e50aa | 427 | int rc; |
b40c2e66 TR |
428 | if (blk_queue_discard(q)) { |
429 | *flag |= JFS_DISCARD; | |
bb5e50aa FF |
430 | rc = kstrtouint(minblks_trim, 0, |
431 | &sbi->minblks_trim); | |
432 | if (rc) | |
433 | goto cleanup; | |
434 | } else | |
789602e9 | 435 | pr_err("JFS: discard option not supported on device\n"); |
b40c2e66 TR |
436 | break; |
437 | } | |
438 | ||
1da177e4 | 439 | default: |
789602e9 FF |
440 | printk("jfs: Unrecognized mount option \"%s\" or missing value\n", |
441 | p); | |
1da177e4 LT |
442 | goto cleanup; |
443 | } | |
444 | } | |
445 | ||
446 | if (nls_map != (void *) -1) { | |
447 | /* Discard old (if remount) */ | |
6d729e44 | 448 | unload_nls(sbi->nls_tab); |
1da177e4 LT |
449 | sbi->nls_tab = nls_map; |
450 | } | |
451 | return 1; | |
452 | ||
453 | cleanup: | |
454 | if (nls_map && nls_map != (void *) -1) | |
455 | unload_nls(nls_map); | |
456 | return 0; | |
457 | } | |
458 | ||
459 | static int jfs_remount(struct super_block *sb, int *flags, char *data) | |
460 | { | |
461 | s64 newLVSize = 0; | |
462 | int rc = 0; | |
463 | int flag = JFS_SBI(sb)->flag; | |
337eb00a | 464 | int ret; |
1da177e4 | 465 | |
02b9984d | 466 | sync_filesystem(sb); |
789602e9 | 467 | if (!parse_options(data, sb, &newLVSize, &flag)) |
1da177e4 | 468 | return -EINVAL; |
22b26db6 | 469 | |
1da177e4 LT |
470 | if (newLVSize) { |
471 | if (sb->s_flags & MS_RDONLY) { | |
789602e9 | 472 | pr_err("JFS: resize requires volume to be mounted read-write\n"); |
1da177e4 LT |
473 | return -EROFS; |
474 | } | |
475 | rc = jfs_extendfs(sb, newLVSize, 0); | |
22b26db6 | 476 | if (rc) |
1da177e4 LT |
477 | return rc; |
478 | } | |
479 | ||
480 | if ((sb->s_flags & MS_RDONLY) && !(*flags & MS_RDONLY)) { | |
7fab479b DK |
481 | /* |
482 | * Invalidate any previously read metadata. fsck may have | |
483 | * changed the on-disk data since we mounted r/o | |
484 | */ | |
485 | truncate_inode_pages(JFS_SBI(sb)->direct_inode->i_mapping, 0); | |
486 | ||
1da177e4 | 487 | JFS_SBI(sb)->flag = flag; |
337eb00a | 488 | ret = jfs_mount_rw(sb, 1); |
c79d967d CH |
489 | |
490 | /* mark the fs r/w for quota activity */ | |
491 | sb->s_flags &= ~MS_RDONLY; | |
492 | ||
0f0dd62f | 493 | dquot_resume(sb, -1); |
337eb00a | 494 | return ret; |
1da177e4 LT |
495 | } |
496 | if ((!(sb->s_flags & MS_RDONLY)) && (*flags & MS_RDONLY)) { | |
0f0dd62f | 497 | rc = dquot_suspend(sb, -1); |
789602e9 | 498 | if (rc < 0) |
0f0dd62f | 499 | return rc; |
1da177e4 LT |
500 | rc = jfs_umount_rw(sb); |
501 | JFS_SBI(sb)->flag = flag; | |
502 | return rc; | |
503 | } | |
504 | if ((JFS_SBI(sb)->flag & JFS_NOINTEGRITY) != (flag & JFS_NOINTEGRITY)) | |
505 | if (!(sb->s_flags & MS_RDONLY)) { | |
506 | rc = jfs_umount_rw(sb); | |
22b26db6 | 507 | if (rc) |
1da177e4 | 508 | return rc; |
22b26db6 | 509 | |
1da177e4 | 510 | JFS_SBI(sb)->flag = flag; |
337eb00a | 511 | ret = jfs_mount_rw(sb, 1); |
337eb00a | 512 | return ret; |
1da177e4 LT |
513 | } |
514 | JFS_SBI(sb)->flag = flag; | |
515 | ||
516 | return 0; | |
517 | } | |
518 | ||
519 | static int jfs_fill_super(struct super_block *sb, void *data, int silent) | |
520 | { | |
521 | struct jfs_sb_info *sbi; | |
522 | struct inode *inode; | |
523 | int rc; | |
524 | s64 newLVSize = 0; | |
eab1df71 | 525 | int flag, ret = -EINVAL; |
1da177e4 LT |
526 | |
527 | jfs_info("In jfs_read_super: s_flags=0x%lx", sb->s_flags); | |
528 | ||
789602e9 | 529 | sbi = kzalloc(sizeof(struct jfs_sb_info), GFP_KERNEL); |
22b26db6 | 530 | if (!sbi) |
087387f9 | 531 | return -ENOMEM; |
22b26db6 | 532 | |
1da177e4 | 533 | sb->s_fs_info = sbi; |
8de52778 | 534 | sb->s_max_links = JFS_LINK_MAX; |
1da177e4 | 535 | sbi->sb = sb; |
c18cdc1a EB |
536 | sbi->uid = INVALID_UID; |
537 | sbi->gid = INVALID_GID; | |
538 | sbi->umask = -1; | |
1da177e4 LT |
539 | |
540 | /* initialize the mount flag and determine the default error handler */ | |
541 | flag = JFS_ERR_REMOUNT_RO; | |
542 | ||
684bdc7f JB |
543 | if (!parse_options((char *) data, sb, &newLVSize, &flag)) |
544 | goto out_kfree; | |
1da177e4 LT |
545 | sbi->flag = flag; |
546 | ||
547 | #ifdef CONFIG_JFS_POSIX_ACL | |
548 | sb->s_flags |= MS_POSIXACL; | |
549 | #endif | |
550 | ||
551 | if (newLVSize) { | |
b40c2e66 | 552 | pr_err("resize option for remount only\n"); |
684bdc7f | 553 | goto out_kfree; |
1da177e4 LT |
554 | } |
555 | ||
556 | /* | |
557 | * Initialize blocksize to 4K. | |
558 | */ | |
559 | sb_set_blocksize(sb, PSIZE); | |
560 | ||
561 | /* | |
562 | * Set method vectors. | |
563 | */ | |
564 | sb->s_op = &jfs_super_operations; | |
565 | sb->s_export_op = &jfs_export_operations; | |
2cc6a5a0 | 566 | sb->s_xattr = jfs_xattr_handlers; |
123e9caf CH |
567 | #ifdef CONFIG_QUOTA |
568 | sb->dq_op = &dquot_operations; | |
12fd086d | 569 | sb->s_qcop = &jfs_quotactl_ops; |
507e1fa6 | 570 | sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP; |
123e9caf | 571 | #endif |
1da177e4 | 572 | |
7fab479b DK |
573 | /* |
574 | * Initialize direct-mapping inode/address-space | |
575 | */ | |
576 | inode = new_inode(sb); | |
eab1df71 DH |
577 | if (inode == NULL) { |
578 | ret = -ENOMEM; | |
684bdc7f | 579 | goto out_unload; |
eab1df71 | 580 | } |
7fab479b | 581 | inode->i_ino = 0; |
684666e5 | 582 | inode->i_size = i_size_read(sb->s_bdev->bd_inode); |
7fab479b | 583 | inode->i_mapping->a_ops = &jfs_metapage_aops; |
9bb8730e | 584 | hlist_add_fake(&inode->i_hash); |
7fab479b DK |
585 | mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); |
586 | ||
587 | sbi->direct_inode = inode; | |
588 | ||
1da177e4 LT |
589 | rc = jfs_mount(sb); |
590 | if (rc) { | |
789602e9 | 591 | if (!silent) |
1da177e4 | 592 | jfs_err("jfs_mount failed w/return code = %d", rc); |
7fab479b | 593 | goto out_mount_failed; |
1da177e4 LT |
594 | } |
595 | if (sb->s_flags & MS_RDONLY) | |
596 | sbi->log = NULL; | |
597 | else { | |
598 | rc = jfs_mount_rw(sb, 0); | |
599 | if (rc) { | |
600 | if (!silent) { | |
601 | jfs_err("jfs_mount_rw failed, return code = %d", | |
602 | rc); | |
603 | } | |
604 | goto out_no_rw; | |
605 | } | |
606 | } | |
607 | ||
608 | sb->s_magic = JFS_SUPER_MAGIC; | |
609 | ||
94b77bd8 AV |
610 | if (sbi->mntflag & JFS_OS2) |
611 | sb->s_d_op = &jfs_ci_dentry_operations; | |
612 | ||
eab1df71 DH |
613 | inode = jfs_iget(sb, ROOT_I); |
614 | if (IS_ERR(inode)) { | |
615 | ret = PTR_ERR(inode); | |
6536d289 | 616 | goto out_no_rw; |
eab1df71 | 617 | } |
48fde701 | 618 | sb->s_root = d_make_root(inode); |
1da177e4 LT |
619 | if (!sb->s_root) |
620 | goto out_no_root; | |
621 | ||
1da177e4 LT |
622 | /* logical blocks are represented by 40 bits in pxd_t, etc. */ |
623 | sb->s_maxbytes = ((u64) sb->s_blocksize) << 40; | |
624 | #if BITS_PER_LONG == 32 | |
625 | /* | |
626 | * Page cache is indexed by long. | |
627 | * I would use MAX_LFS_FILESIZE, but it's only half as big | |
628 | */ | |
09cbfeaf | 629 | sb->s_maxbytes = min(((u64) PAGE_SIZE << 32) - 1, |
789602e9 | 630 | (u64)sb->s_maxbytes); |
1da177e4 LT |
631 | #endif |
632 | sb->s_time_gran = 1; | |
633 | return 0; | |
634 | ||
635 | out_no_root: | |
6536d289 | 636 | jfs_err("jfs_read_super: get root dentry failed"); |
1da177e4 LT |
637 | |
638 | out_no_rw: | |
639 | rc = jfs_umount(sb); | |
789602e9 | 640 | if (rc) |
1da177e4 | 641 | jfs_err("jfs_umount failed with return code %d", rc); |
7fab479b | 642 | out_mount_failed: |
28fd1298 | 643 | filemap_write_and_wait(sbi->direct_inode->i_mapping); |
7fab479b DK |
644 | truncate_inode_pages(sbi->direct_inode->i_mapping, 0); |
645 | make_bad_inode(sbi->direct_inode); | |
646 | iput(sbi->direct_inode); | |
647 | sbi->direct_inode = NULL; | |
684bdc7f | 648 | out_unload: |
648695c7 | 649 | unload_nls(sbi->nls_tab); |
684bdc7f | 650 | out_kfree: |
1da177e4 | 651 | kfree(sbi); |
eab1df71 | 652 | return ret; |
1da177e4 LT |
653 | } |
654 | ||
c4be0c1d | 655 | static int jfs_freeze(struct super_block *sb) |
1da177e4 LT |
656 | { |
657 | struct jfs_sb_info *sbi = JFS_SBI(sb); | |
658 | struct jfs_log *log = sbi->log; | |
e9b37667 | 659 | int rc = 0; |
1da177e4 LT |
660 | |
661 | if (!(sb->s_flags & MS_RDONLY)) { | |
662 | txQuiesce(sb); | |
e9b37667 VM |
663 | rc = lmLogShutdown(log); |
664 | if (rc) { | |
eb8630d7 | 665 | jfs_error(sb, "lmLogShutdown failed\n"); |
e9b37667 VM |
666 | |
667 | /* let operations fail rather than hang */ | |
668 | txResume(sb); | |
669 | ||
670 | return rc; | |
671 | } | |
672 | rc = updateSuper(sb, FM_CLEAN); | |
673 | if (rc) { | |
b18db6de | 674 | jfs_err("jfs_freeze: updateSuper failed"); |
e9b37667 VM |
675 | /* |
676 | * Don't fail here. Everything succeeded except | |
677 | * marking the superblock clean, so there's really | |
678 | * no harm in leaving it frozen for now. | |
679 | */ | |
680 | } | |
1da177e4 | 681 | } |
c4be0c1d | 682 | return 0; |
1da177e4 LT |
683 | } |
684 | ||
c4be0c1d | 685 | static int jfs_unfreeze(struct super_block *sb) |
1da177e4 LT |
686 | { |
687 | struct jfs_sb_info *sbi = JFS_SBI(sb); | |
688 | struct jfs_log *log = sbi->log; | |
689 | int rc = 0; | |
690 | ||
691 | if (!(sb->s_flags & MS_RDONLY)) { | |
e9b37667 VM |
692 | rc = updateSuper(sb, FM_MOUNT); |
693 | if (rc) { | |
eb8630d7 | 694 | jfs_error(sb, "updateSuper failed\n"); |
e9b37667 VM |
695 | goto out; |
696 | } | |
697 | rc = lmLogInit(log); | |
698 | if (rc) | |
eb8630d7 | 699 | jfs_error(sb, "lmLogInit failed\n"); |
e9b37667 VM |
700 | out: |
701 | txResume(sb); | |
1da177e4 | 702 | } |
e9b37667 | 703 | return rc; |
1da177e4 LT |
704 | } |
705 | ||
152a0836 AV |
706 | static struct dentry *jfs_do_mount(struct file_system_type *fs_type, |
707 | int flags, const char *dev_name, void *data) | |
1da177e4 | 708 | { |
152a0836 | 709 | return mount_bdev(fs_type, flags, dev_name, data, jfs_fill_super); |
1da177e4 LT |
710 | } |
711 | ||
712 | static int jfs_sync_fs(struct super_block *sb, int wait) | |
713 | { | |
714 | struct jfs_log *log = JFS_SBI(sb)->log; | |
715 | ||
716 | /* log == NULL indicates read-only mount */ | |
1c627829 | 717 | if (log) { |
a1177825 JK |
718 | /* |
719 | * Write quota structures to quota file, sync_blockdev() will | |
720 | * write them to disk later | |
721 | */ | |
722 | dquot_writeback_dquots(sb, -1); | |
1da177e4 | 723 | jfs_flush_journal(log, wait); |
cbc3d65e | 724 | jfs_syncpt(log, 0); |
1c627829 | 725 | } |
1da177e4 LT |
726 | |
727 | return 0; | |
728 | } | |
729 | ||
34c80b1d | 730 | static int jfs_show_options(struct seq_file *seq, struct dentry *root) |
8fc2751b | 731 | { |
34c80b1d | 732 | struct jfs_sb_info *sbi = JFS_SBI(root->d_sb); |
8fc2751b | 733 | |
c18cdc1a EB |
734 | if (uid_valid(sbi->uid)) |
735 | seq_printf(seq, ",uid=%d", from_kuid(&init_user_ns, sbi->uid)); | |
736 | if (gid_valid(sbi->gid)) | |
737 | seq_printf(seq, ",gid=%d", from_kgid(&init_user_ns, sbi->gid)); | |
69eb66d7 DK |
738 | if (sbi->umask != -1) |
739 | seq_printf(seq, ",umask=%03o", sbi->umask); | |
8fc2751b MB |
740 | if (sbi->flag & JFS_NOINTEGRITY) |
741 | seq_puts(seq, ",nointegrity"); | |
b40c2e66 TR |
742 | if (sbi->flag & JFS_DISCARD) |
743 | seq_printf(seq, ",discard=%u", sbi->minblks_trim); | |
5c5e32ce MS |
744 | if (sbi->nls_tab) |
745 | seq_printf(seq, ",iocharset=%s", sbi->nls_tab->charset); | |
746 | if (sbi->flag & JFS_ERR_CONTINUE) | |
747 | seq_printf(seq, ",errors=continue"); | |
748 | if (sbi->flag & JFS_ERR_PANIC) | |
749 | seq_printf(seq, ",errors=panic"); | |
8fc2751b | 750 | |
115ff50b | 751 | #ifdef CONFIG_QUOTA |
8fc2751b MB |
752 | if (sbi->flag & JFS_USRQUOTA) |
753 | seq_puts(seq, ",usrquota"); | |
754 | ||
755 | if (sbi->flag & JFS_GRPQUOTA) | |
756 | seq_puts(seq, ",grpquota"); | |
757 | #endif | |
758 | ||
759 | return 0; | |
760 | } | |
761 | ||
115ff50b DK |
762 | #ifdef CONFIG_QUOTA |
763 | ||
764 | /* Read data from quotafile - avoid pagecache and such because we cannot afford | |
765 | * acquiring the locks... As quota files are never truncated and quota code | |
25985edc | 766 | * itself serializes the operations (and no one else should touch the files) |
115ff50b DK |
767 | * we don't have to be afraid of races */ |
768 | static ssize_t jfs_quota_read(struct super_block *sb, int type, char *data, | |
769 | size_t len, loff_t off) | |
770 | { | |
771 | struct inode *inode = sb_dqopt(sb)->files[type]; | |
772 | sector_t blk = off >> sb->s_blocksize_bits; | |
773 | int err = 0; | |
774 | int offset = off & (sb->s_blocksize - 1); | |
775 | int tocopy; | |
776 | size_t toread; | |
777 | struct buffer_head tmp_bh; | |
778 | struct buffer_head *bh; | |
779 | loff_t i_size = i_size_read(inode); | |
780 | ||
781 | if (off > i_size) | |
782 | return 0; | |
783 | if (off+len > i_size) | |
784 | len = i_size-off; | |
785 | toread = len; | |
786 | while (toread > 0) { | |
787 | tocopy = sb->s_blocksize - offset < toread ? | |
788 | sb->s_blocksize - offset : toread; | |
789 | ||
790 | tmp_bh.b_state = 0; | |
93407472 | 791 | tmp_bh.b_size = i_blocksize(inode); |
115ff50b DK |
792 | err = jfs_get_block(inode, blk, &tmp_bh, 0); |
793 | if (err) | |
794 | return err; | |
795 | if (!buffer_mapped(&tmp_bh)) /* A hole? */ | |
796 | memset(data, 0, tocopy); | |
797 | else { | |
798 | bh = sb_bread(sb, tmp_bh.b_blocknr); | |
799 | if (!bh) | |
800 | return -EIO; | |
801 | memcpy(data, bh->b_data+offset, tocopy); | |
802 | brelse(bh); | |
803 | } | |
804 | offset = 0; | |
805 | toread -= tocopy; | |
806 | data += tocopy; | |
807 | blk++; | |
808 | } | |
809 | return len; | |
810 | } | |
811 | ||
812 | /* Write to quotafile */ | |
813 | static ssize_t jfs_quota_write(struct super_block *sb, int type, | |
814 | const char *data, size_t len, loff_t off) | |
815 | { | |
816 | struct inode *inode = sb_dqopt(sb)->files[type]; | |
817 | sector_t blk = off >> sb->s_blocksize_bits; | |
818 | int err = 0; | |
819 | int offset = off & (sb->s_blocksize - 1); | |
820 | int tocopy; | |
821 | size_t towrite = len; | |
822 | struct buffer_head tmp_bh; | |
823 | struct buffer_head *bh; | |
824 | ||
5955102c | 825 | inode_lock(inode); |
115ff50b DK |
826 | while (towrite > 0) { |
827 | tocopy = sb->s_blocksize - offset < towrite ? | |
828 | sb->s_blocksize - offset : towrite; | |
829 | ||
830 | tmp_bh.b_state = 0; | |
93407472 | 831 | tmp_bh.b_size = i_blocksize(inode); |
115ff50b DK |
832 | err = jfs_get_block(inode, blk, &tmp_bh, 1); |
833 | if (err) | |
834 | goto out; | |
835 | if (offset || tocopy != sb->s_blocksize) | |
836 | bh = sb_bread(sb, tmp_bh.b_blocknr); | |
837 | else | |
838 | bh = sb_getblk(sb, tmp_bh.b_blocknr); | |
839 | if (!bh) { | |
840 | err = -EIO; | |
841 | goto out; | |
842 | } | |
843 | lock_buffer(bh); | |
844 | memcpy(bh->b_data+offset, data, tocopy); | |
845 | flush_dcache_page(bh->b_page); | |
846 | set_buffer_uptodate(bh); | |
847 | mark_buffer_dirty(bh); | |
848 | unlock_buffer(bh); | |
849 | brelse(bh); | |
850 | offset = 0; | |
851 | towrite -= tocopy; | |
852 | data += tocopy; | |
853 | blk++; | |
854 | } | |
855 | out: | |
9c83633a | 856 | if (len == towrite) { |
5955102c | 857 | inode_unlock(inode); |
115ff50b | 858 | return err; |
9c83633a | 859 | } |
115ff50b DK |
860 | if (inode->i_size < off+len-towrite) |
861 | i_size_write(inode, off+len-towrite); | |
862 | inode->i_version++; | |
078cd827 | 863 | inode->i_mtime = inode->i_ctime = current_time(inode); |
115ff50b | 864 | mark_inode_dirty(inode); |
5955102c | 865 | inode_unlock(inode); |
115ff50b DK |
866 | return len - towrite; |
867 | } | |
868 | ||
507e1fa6 JK |
869 | static struct dquot **jfs_get_dquots(struct inode *inode) |
870 | { | |
871 | return JFS_IP(inode)->i_dquot; | |
872 | } | |
12fd086d JK |
873 | |
874 | static int jfs_quota_on(struct super_block *sb, int type, int format_id, | |
875 | const struct path *path) | |
876 | { | |
877 | int err; | |
878 | struct inode *inode; | |
879 | ||
880 | err = dquot_quota_on(sb, type, format_id, path); | |
881 | if (err) | |
882 | return err; | |
883 | ||
884 | inode = d_inode(path->dentry); | |
885 | inode_lock(inode); | |
886 | JFS_IP(inode)->mode2 |= JFS_NOATIME_FL | JFS_IMMUTABLE_FL; | |
887 | inode_set_flags(inode, S_NOATIME | S_IMMUTABLE, | |
888 | S_NOATIME | S_IMMUTABLE); | |
889 | inode_unlock(inode); | |
890 | mark_inode_dirty(inode); | |
891 | ||
892 | return 0; | |
893 | } | |
894 | ||
895 | static int jfs_quota_off(struct super_block *sb, int type) | |
896 | { | |
897 | struct inode *inode = sb_dqopt(sb)->files[type]; | |
898 | int err; | |
899 | ||
900 | if (!inode || !igrab(inode)) | |
901 | goto out; | |
902 | ||
903 | err = dquot_quota_off(sb, type); | |
904 | if (err) | |
905 | goto out_put; | |
906 | ||
907 | inode_lock(inode); | |
908 | JFS_IP(inode)->mode2 &= ~(JFS_NOATIME_FL | JFS_IMMUTABLE_FL); | |
909 | inode_set_flags(inode, 0, S_NOATIME | S_IMMUTABLE); | |
910 | inode_unlock(inode); | |
911 | mark_inode_dirty(inode); | |
912 | out_put: | |
913 | iput(inode); | |
914 | return err; | |
915 | out: | |
916 | return dquot_quota_off(sb, type); | |
917 | } | |
115ff50b DK |
918 | #endif |
919 | ||
ee9b6d61 | 920 | static const struct super_operations jfs_super_operations = { |
1da177e4 LT |
921 | .alloc_inode = jfs_alloc_inode, |
922 | .destroy_inode = jfs_destroy_inode, | |
1da177e4 LT |
923 | .dirty_inode = jfs_dirty_inode, |
924 | .write_inode = jfs_write_inode, | |
62aff86f | 925 | .evict_inode = jfs_evict_inode, |
1da177e4 LT |
926 | .put_super = jfs_put_super, |
927 | .sync_fs = jfs_sync_fs, | |
c4be0c1d TS |
928 | .freeze_fs = jfs_freeze, |
929 | .unfreeze_fs = jfs_unfreeze, | |
1da177e4 LT |
930 | .statfs = jfs_statfs, |
931 | .remount_fs = jfs_remount, | |
115ff50b DK |
932 | .show_options = jfs_show_options, |
933 | #ifdef CONFIG_QUOTA | |
934 | .quota_read = jfs_quota_read, | |
935 | .quota_write = jfs_quota_write, | |
507e1fa6 | 936 | .get_dquots = jfs_get_dquots, |
115ff50b | 937 | #endif |
1da177e4 LT |
938 | }; |
939 | ||
39655164 | 940 | static const struct export_operations jfs_export_operations = { |
d425de70 CH |
941 | .fh_to_dentry = jfs_fh_to_dentry, |
942 | .fh_to_parent = jfs_fh_to_parent, | |
1da177e4 LT |
943 | .get_parent = jfs_get_parent, |
944 | }; | |
945 | ||
946 | static struct file_system_type jfs_fs_type = { | |
947 | .owner = THIS_MODULE, | |
948 | .name = "jfs", | |
152a0836 | 949 | .mount = jfs_do_mount, |
1da177e4 LT |
950 | .kill_sb = kill_block_super, |
951 | .fs_flags = FS_REQUIRES_DEV, | |
952 | }; | |
7f78e035 | 953 | MODULE_ALIAS_FS("jfs"); |
1da177e4 | 954 | |
51cc5068 | 955 | static void init_once(void *foo) |
1da177e4 LT |
956 | { |
957 | struct jfs_inode_info *jfs_ip = (struct jfs_inode_info *) foo; | |
958 | ||
a35afb83 CL |
959 | memset(jfs_ip, 0, sizeof(struct jfs_inode_info)); |
960 | INIT_LIST_HEAD(&jfs_ip->anon_inode_list); | |
961 | init_rwsem(&jfs_ip->rdwrlock); | |
962 | mutex_init(&jfs_ip->commit_mutex); | |
963 | init_rwsem(&jfs_ip->xattr_sem); | |
964 | spin_lock_init(&jfs_ip->ag_lock); | |
965 | jfs_ip->active_ag = -1; | |
a35afb83 | 966 | inode_init_once(&jfs_ip->vfs_inode); |
1da177e4 LT |
967 | } |
968 | ||
969 | static int __init init_jfs_fs(void) | |
970 | { | |
971 | int i; | |
972 | int rc; | |
973 | ||
974 | jfs_inode_cachep = | |
63f83c9f | 975 | kmem_cache_create("jfs_ip", sizeof(struct jfs_inode_info), 0, |
5d097056 | 976 | SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD|SLAB_ACCOUNT, |
20c2df83 | 977 | init_once); |
1da177e4 LT |
978 | if (jfs_inode_cachep == NULL) |
979 | return -ENOMEM; | |
980 | ||
981 | /* | |
982 | * Metapage initialization | |
983 | */ | |
984 | rc = metapage_init(); | |
985 | if (rc) { | |
986 | jfs_err("metapage_init failed w/rc = %d", rc); | |
987 | goto free_slab; | |
988 | } | |
989 | ||
990 | /* | |
991 | * Transaction Manager initialization | |
992 | */ | |
993 | rc = txInit(); | |
994 | if (rc) { | |
995 | jfs_err("txInit failed w/rc = %d", rc); | |
996 | goto free_metapage; | |
997 | } | |
998 | ||
999 | /* | |
1000 | * I/O completion thread (endio) | |
1001 | */ | |
91dbb4de CH |
1002 | jfsIOthread = kthread_run(jfsIOWait, NULL, "jfsIO"); |
1003 | if (IS_ERR(jfsIOthread)) { | |
1004 | rc = PTR_ERR(jfsIOthread); | |
1005 | jfs_err("init_jfs_fs: fork failed w/rc = %d", rc); | |
1da177e4 LT |
1006 | goto end_txmngr; |
1007 | } | |
1da177e4 LT |
1008 | |
1009 | if (commit_threads < 1) | |
1010 | commit_threads = num_online_cpus(); | |
1011 | if (commit_threads > MAX_COMMIT_THREADS) | |
1012 | commit_threads = MAX_COMMIT_THREADS; | |
1013 | ||
1014 | for (i = 0; i < commit_threads; i++) { | |
789602e9 FF |
1015 | jfsCommitThread[i] = kthread_run(jfs_lazycommit, NULL, |
1016 | "jfsCommit"); | |
91dbb4de CH |
1017 | if (IS_ERR(jfsCommitThread[i])) { |
1018 | rc = PTR_ERR(jfsCommitThread[i]); | |
1019 | jfs_err("init_jfs_fs: fork failed w/rc = %d", rc); | |
1da177e4 LT |
1020 | commit_threads = i; |
1021 | goto kill_committask; | |
1022 | } | |
1da177e4 LT |
1023 | } |
1024 | ||
91dbb4de CH |
1025 | jfsSyncThread = kthread_run(jfs_sync, NULL, "jfsSync"); |
1026 | if (IS_ERR(jfsSyncThread)) { | |
1027 | rc = PTR_ERR(jfsSyncThread); | |
1028 | jfs_err("init_jfs_fs: fork failed w/rc = %d", rc); | |
1da177e4 LT |
1029 | goto kill_committask; |
1030 | } | |
1da177e4 LT |
1031 | |
1032 | #ifdef PROC_FS_JFS | |
1033 | jfs_proc_init(); | |
1034 | #endif | |
1035 | ||
76bf09fc AV |
1036 | rc = register_filesystem(&jfs_fs_type); |
1037 | if (!rc) | |
1038 | return 0; | |
1da177e4 | 1039 | |
76bf09fc AV |
1040 | #ifdef PROC_FS_JFS |
1041 | jfs_proc_clean(); | |
1042 | #endif | |
1043 | kthread_stop(jfsSyncThread); | |
1da177e4 | 1044 | kill_committask: |
1da177e4 | 1045 | for (i = 0; i < commit_threads; i++) |
91dbb4de CH |
1046 | kthread_stop(jfsCommitThread[i]); |
1047 | kthread_stop(jfsIOthread); | |
1da177e4 LT |
1048 | end_txmngr: |
1049 | txExit(); | |
1050 | free_metapage: | |
1051 | metapage_exit(); | |
1052 | free_slab: | |
1053 | kmem_cache_destroy(jfs_inode_cachep); | |
1054 | return rc; | |
1055 | } | |
1056 | ||
1057 | static void __exit exit_jfs_fs(void) | |
1058 | { | |
1059 | int i; | |
1060 | ||
1061 | jfs_info("exit_jfs_fs called"); | |
1062 | ||
1da177e4 LT |
1063 | txExit(); |
1064 | metapage_exit(); | |
91dbb4de CH |
1065 | |
1066 | kthread_stop(jfsIOthread); | |
1da177e4 | 1067 | for (i = 0; i < commit_threads; i++) |
91dbb4de CH |
1068 | kthread_stop(jfsCommitThread[i]); |
1069 | kthread_stop(jfsSyncThread); | |
1da177e4 LT |
1070 | #ifdef PROC_FS_JFS |
1071 | jfs_proc_clean(); | |
1072 | #endif | |
1073 | unregister_filesystem(&jfs_fs_type); | |
8c0a8537 KS |
1074 | |
1075 | /* | |
1076 | * Make sure all delayed rcu free inodes are flushed before we | |
1077 | * destroy cache. | |
1078 | */ | |
1079 | rcu_barrier(); | |
1da177e4 LT |
1080 | kmem_cache_destroy(jfs_inode_cachep); |
1081 | } | |
1082 | ||
1083 | module_init(init_jfs_fs) | |
1084 | module_exit(exit_jfs_fs) |