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1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * Copyright (C) International Business Machines Corp., 2000-2004 | |
4 | * Portions Copyright (C) Christoph Hellwig, 2001-2002 | |
1da177e4 LT |
5 | */ |
6 | ||
7 | #include <linux/fs.h> | |
1da177e4 LT |
8 | #include <linux/module.h> |
9 | #include <linux/parser.h> | |
10 | #include <linux/completion.h> | |
11 | #include <linux/vfs.h> | |
74abb989 | 12 | #include <linux/quotaops.h> |
8fc2751b | 13 | #include <linux/mount.h> |
1da177e4 | 14 | #include <linux/moduleparam.h> |
91dbb4de | 15 | #include <linux/kthread.h> |
9a59f452 | 16 | #include <linux/posix_acl.h> |
115ff50b | 17 | #include <linux/buffer_head.h> |
a5694255 | 18 | #include <linux/exportfs.h> |
b5c816a4 | 19 | #include <linux/crc32.h> |
5a0e3ad6 | 20 | #include <linux/slab.h> |
7c0f6ba6 | 21 | #include <linux/uaccess.h> |
8fc2751b | 22 | #include <linux/seq_file.h> |
b40c2e66 | 23 | #include <linux/blkdev.h> |
1da177e4 LT |
24 | |
25 | #include "jfs_incore.h" | |
26 | #include "jfs_filsys.h" | |
1868f4aa | 27 | #include "jfs_inode.h" |
1da177e4 LT |
28 | #include "jfs_metapage.h" |
29 | #include "jfs_superblock.h" | |
30 | #include "jfs_dmap.h" | |
31 | #include "jfs_imap.h" | |
32 | #include "jfs_acl.h" | |
33 | #include "jfs_debug.h" | |
2cc6a5a0 | 34 | #include "jfs_xattr.h" |
12fd086d | 35 | #include "jfs_dinode.h" |
1da177e4 LT |
36 | |
37 | MODULE_DESCRIPTION("The Journaled Filesystem (JFS)"); | |
38 | MODULE_AUTHOR("Steve Best/Dave Kleikamp/Barry Arndt, IBM"); | |
39 | MODULE_LICENSE("GPL"); | |
40 | ||
789602e9 | 41 | static struct kmem_cache *jfs_inode_cachep; |
1da177e4 | 42 | |
ee9b6d61 | 43 | static const struct super_operations jfs_super_operations; |
39655164 | 44 | static const struct export_operations jfs_export_operations; |
1da177e4 LT |
45 | static struct file_system_type jfs_fs_type; |
46 | ||
47 | #define MAX_COMMIT_THREADS 64 | |
789602e9 | 48 | static int commit_threads; |
1da177e4 LT |
49 | module_param(commit_threads, int, 0); |
50 | MODULE_PARM_DESC(commit_threads, "Number of commit threads"); | |
51 | ||
91dbb4de CH |
52 | static struct task_struct *jfsCommitThread[MAX_COMMIT_THREADS]; |
53 | struct task_struct *jfsIOthread; | |
54 | struct task_struct *jfsSyncThread; | |
1da177e4 LT |
55 | |
56 | #ifdef CONFIG_JFS_DEBUG | |
57 | int jfsloglevel = JFS_LOGLEVEL_WARN; | |
58 | module_param(jfsloglevel, int, 0644); | |
59 | MODULE_PARM_DESC(jfsloglevel, "Specify JFS loglevel (0, 1 or 2)"); | |
60 | #endif | |
61 | ||
1da177e4 LT |
62 | static void jfs_handle_error(struct super_block *sb) |
63 | { | |
64 | struct jfs_sb_info *sbi = JFS_SBI(sb); | |
65 | ||
bc98a42c | 66 | if (sb_rdonly(sb)) |
1da177e4 LT |
67 | return; |
68 | ||
69 | updateSuper(sb, FM_DIRTY); | |
70 | ||
71 | if (sbi->flag & JFS_ERR_PANIC) | |
72 | panic("JFS (device %s): panic forced after error\n", | |
73 | sb->s_id); | |
74 | else if (sbi->flag & JFS_ERR_REMOUNT_RO) { | |
b18db6de | 75 | jfs_err("ERROR: (device %s): remounting filesystem as read-only", |
1da177e4 | 76 | sb->s_id); |
1751e8a6 | 77 | sb->s_flags |= SB_RDONLY; |
63f83c9f | 78 | } |
1da177e4 LT |
79 | |
80 | /* nothing is done for continue beyond marking the superblock dirty */ | |
81 | } | |
82 | ||
eb8630d7 | 83 | void jfs_error(struct super_block *sb, const char *fmt, ...) |
1da177e4 | 84 | { |
eb8630d7 | 85 | struct va_format vaf; |
1da177e4 LT |
86 | va_list args; |
87 | ||
eb8630d7 JP |
88 | va_start(args, fmt); |
89 | ||
90 | vaf.fmt = fmt; | |
91 | vaf.va = &args; | |
1da177e4 | 92 | |
7d2ac456 | 93 | pr_err("ERROR: (device %s): %ps: %pV\n", |
eb8630d7 JP |
94 | sb->s_id, __builtin_return_address(0), &vaf); |
95 | ||
96 | va_end(args); | |
1da177e4 LT |
97 | |
98 | jfs_handle_error(sb); | |
99 | } | |
100 | ||
101 | static struct inode *jfs_alloc_inode(struct super_block *sb) | |
102 | { | |
103 | struct jfs_inode_info *jfs_inode; | |
104 | ||
105 | jfs_inode = kmem_cache_alloc(jfs_inode_cachep, GFP_NOFS); | |
106 | if (!jfs_inode) | |
107 | return NULL; | |
507e1fa6 JK |
108 | #ifdef CONFIG_QUOTA |
109 | memset(&jfs_inode->i_dquot, 0, sizeof(jfs_inode->i_dquot)); | |
110 | #endif | |
1da177e4 LT |
111 | return &jfs_inode->vfs_inode; |
112 | } | |
113 | ||
b3b4a6e3 | 114 | static void jfs_free_inode(struct inode *inode) |
fa0d7e3d | 115 | { |
b3b4a6e3 | 116 | kmem_cache_free(jfs_inode_cachep, JFS_IP(inode)); |
1da177e4 LT |
117 | } |
118 | ||
726c3342 | 119 | static int jfs_statfs(struct dentry *dentry, struct kstatfs *buf) |
1da177e4 | 120 | { |
726c3342 | 121 | struct jfs_sb_info *sbi = JFS_SBI(dentry->d_sb); |
1da177e4 LT |
122 | s64 maxinodes; |
123 | struct inomap *imap = JFS_IP(sbi->ipimap)->i_imap; | |
124 | ||
125 | jfs_info("In jfs_statfs"); | |
126 | buf->f_type = JFS_SUPER_MAGIC; | |
127 | buf->f_bsize = sbi->bsize; | |
128 | buf->f_blocks = sbi->bmap->db_mapsize; | |
129 | buf->f_bfree = sbi->bmap->db_nfree; | |
130 | buf->f_bavail = sbi->bmap->db_nfree; | |
131 | /* | |
132 | * If we really return the number of allocated & free inodes, some | |
133 | * applications will fail because they won't see enough free inodes. | |
4de80273 | 134 | * We'll try to calculate some guess as to how many inodes we can |
1da177e4 LT |
135 | * really allocate |
136 | * | |
137 | * buf->f_files = atomic_read(&imap->im_numinos); | |
138 | * buf->f_ffree = atomic_read(&imap->im_numfree); | |
139 | */ | |
140 | maxinodes = min((s64) atomic_read(&imap->im_numinos) + | |
141 | ((sbi->bmap->db_nfree >> imap->im_l2nbperiext) | |
142 | << L2INOSPEREXT), (s64) 0xffffffffLL); | |
143 | buf->f_files = maxinodes; | |
144 | buf->f_ffree = maxinodes - (atomic_read(&imap->im_numinos) - | |
145 | atomic_read(&imap->im_numfree)); | |
2e3bc612 AS |
146 | buf->f_fsid.val[0] = crc32_le(0, (char *)&sbi->uuid, |
147 | sizeof(sbi->uuid)/2); | |
148 | buf->f_fsid.val[1] = crc32_le(0, | |
149 | (char *)&sbi->uuid + sizeof(sbi->uuid)/2, | |
150 | sizeof(sbi->uuid)/2); | |
1da177e4 LT |
151 | |
152 | buf->f_namelen = JFS_NAME_MAX; | |
153 | return 0; | |
154 | } | |
155 | ||
12fd086d JK |
156 | #ifdef CONFIG_QUOTA |
157 | static int jfs_quota_off(struct super_block *sb, int type); | |
158 | static int jfs_quota_on(struct super_block *sb, int type, int format_id, | |
159 | const struct path *path); | |
160 | ||
161 | static void jfs_quota_off_umount(struct super_block *sb) | |
162 | { | |
163 | int type; | |
164 | ||
165 | for (type = 0; type < MAXQUOTAS; type++) | |
166 | jfs_quota_off(sb, type); | |
167 | } | |
168 | ||
169 | static const struct quotactl_ops jfs_quotactl_ops = { | |
170 | .quota_on = jfs_quota_on, | |
171 | .quota_off = jfs_quota_off, | |
172 | .quota_sync = dquot_quota_sync, | |
173 | .get_state = dquot_get_state, | |
174 | .set_info = dquot_set_dqinfo, | |
175 | .get_dqblk = dquot_get_dqblk, | |
176 | .set_dqblk = dquot_set_dqblk, | |
177 | .get_nextdqblk = dquot_get_next_dqblk, | |
178 | }; | |
179 | #else | |
180 | static inline void jfs_quota_off_umount(struct super_block *sb) | |
181 | { | |
182 | } | |
183 | #endif | |
184 | ||
1da177e4 LT |
185 | static void jfs_put_super(struct super_block *sb) |
186 | { | |
187 | struct jfs_sb_info *sbi = JFS_SBI(sb); | |
188 | int rc; | |
189 | ||
190 | jfs_info("In jfs_put_super"); | |
6cfd0148 | 191 | |
12fd086d | 192 | jfs_quota_off_umount(sb); |
e0ccfd95 | 193 | |
1da177e4 LT |
194 | rc = jfs_umount(sb); |
195 | if (rc) | |
196 | jfs_err("jfs_umount failed with return code %d", rc); | |
6d729e44 TG |
197 | |
198 | unload_nls(sbi->nls_tab); | |
1da177e4 | 199 | |
7fab479b DK |
200 | truncate_inode_pages(sbi->direct_inode->i_mapping, 0); |
201 | iput(sbi->direct_inode); | |
7fab479b | 202 | |
1da177e4 LT |
203 | kfree(sbi); |
204 | } | |
205 | ||
206 | enum { | |
207 | Opt_integrity, Opt_nointegrity, Opt_iocharset, Opt_resize, | |
8fc2751b | 208 | Opt_resize_nosize, Opt_errors, Opt_ignore, Opt_err, Opt_quota, |
b40c2e66 TR |
209 | Opt_usrquota, Opt_grpquota, Opt_uid, Opt_gid, Opt_umask, |
210 | Opt_discard, Opt_nodiscard, Opt_discard_minblk | |
1da177e4 LT |
211 | }; |
212 | ||
a447c093 | 213 | static const match_table_t tokens = { |
1da177e4 LT |
214 | {Opt_integrity, "integrity"}, |
215 | {Opt_nointegrity, "nointegrity"}, | |
216 | {Opt_iocharset, "iocharset=%s"}, | |
217 | {Opt_resize, "resize=%u"}, | |
218 | {Opt_resize_nosize, "resize"}, | |
219 | {Opt_errors, "errors=%s"}, | |
220 | {Opt_ignore, "noquota"}, | |
02645bcd | 221 | {Opt_quota, "quota"}, |
8fc2751b MB |
222 | {Opt_usrquota, "usrquota"}, |
223 | {Opt_grpquota, "grpquota"}, | |
69eb66d7 DK |
224 | {Opt_uid, "uid=%u"}, |
225 | {Opt_gid, "gid=%u"}, | |
226 | {Opt_umask, "umask=%u"}, | |
b40c2e66 TR |
227 | {Opt_discard, "discard"}, |
228 | {Opt_nodiscard, "nodiscard"}, | |
229 | {Opt_discard_minblk, "discard=%u"}, | |
1da177e4 LT |
230 | {Opt_err, NULL} |
231 | }; | |
232 | ||
233 | static int parse_options(char *options, struct super_block *sb, s64 *newLVSize, | |
234 | int *flag) | |
235 | { | |
236 | void *nls_map = (void *)-1; /* -1: no change; NULL: none */ | |
237 | char *p; | |
238 | struct jfs_sb_info *sbi = JFS_SBI(sb); | |
239 | ||
240 | *newLVSize = 0; | |
241 | ||
242 | if (!options) | |
243 | return 1; | |
244 | ||
245 | while ((p = strsep(&options, ",")) != NULL) { | |
246 | substring_t args[MAX_OPT_ARGS]; | |
247 | int token; | |
248 | if (!*p) | |
249 | continue; | |
250 | ||
251 | token = match_token(p, tokens, args); | |
252 | switch (token) { | |
253 | case Opt_integrity: | |
254 | *flag &= ~JFS_NOINTEGRITY; | |
255 | break; | |
256 | case Opt_nointegrity: | |
257 | *flag |= JFS_NOINTEGRITY; | |
258 | break; | |
259 | case Opt_ignore: | |
260 | /* Silently ignore the quota options */ | |
261 | /* Don't do anything ;-) */ | |
262 | break; | |
263 | case Opt_iocharset: | |
264 | if (nls_map && nls_map != (void *) -1) | |
265 | unload_nls(nls_map); | |
266 | if (!strcmp(args[0].from, "none")) | |
267 | nls_map = NULL; | |
268 | else { | |
269 | nls_map = load_nls(args[0].from); | |
270 | if (!nls_map) { | |
b40c2e66 | 271 | pr_err("JFS: charset not found\n"); |
1da177e4 LT |
272 | goto cleanup; |
273 | } | |
274 | } | |
275 | break; | |
276 | case Opt_resize: | |
277 | { | |
278 | char *resize = args[0].from; | |
bb5e50aa FF |
279 | int rc = kstrtoll(resize, 0, newLVSize); |
280 | ||
281 | if (rc) | |
282 | goto cleanup; | |
1da177e4 LT |
283 | break; |
284 | } | |
285 | case Opt_resize_nosize: | |
286 | { | |
684666e5 | 287 | *newLVSize = i_size_read(sb->s_bdev->bd_inode) >> |
1da177e4 LT |
288 | sb->s_blocksize_bits; |
289 | if (*newLVSize == 0) | |
b40c2e66 | 290 | pr_err("JFS: Cannot determine volume size\n"); |
1da177e4 LT |
291 | break; |
292 | } | |
293 | case Opt_errors: | |
294 | { | |
295 | char *errors = args[0].from; | |
296 | if (!errors || !*errors) | |
297 | goto cleanup; | |
298 | if (!strcmp(errors, "continue")) { | |
299 | *flag &= ~JFS_ERR_REMOUNT_RO; | |
300 | *flag &= ~JFS_ERR_PANIC; | |
301 | *flag |= JFS_ERR_CONTINUE; | |
302 | } else if (!strcmp(errors, "remount-ro")) { | |
303 | *flag &= ~JFS_ERR_CONTINUE; | |
304 | *flag &= ~JFS_ERR_PANIC; | |
305 | *flag |= JFS_ERR_REMOUNT_RO; | |
306 | } else if (!strcmp(errors, "panic")) { | |
307 | *flag &= ~JFS_ERR_CONTINUE; | |
308 | *flag &= ~JFS_ERR_REMOUNT_RO; | |
309 | *flag |= JFS_ERR_PANIC; | |
310 | } else { | |
b40c2e66 | 311 | pr_err("JFS: %s is an invalid error handler\n", |
1da177e4 LT |
312 | errors); |
313 | goto cleanup; | |
314 | } | |
315 | break; | |
316 | } | |
8fc2751b | 317 | |
115ff50b | 318 | #ifdef CONFIG_QUOTA |
8fc2751b MB |
319 | case Opt_quota: |
320 | case Opt_usrquota: | |
321 | *flag |= JFS_USRQUOTA; | |
322 | break; | |
323 | case Opt_grpquota: | |
324 | *flag |= JFS_GRPQUOTA; | |
325 | break; | |
326 | #else | |
327 | case Opt_usrquota: | |
328 | case Opt_grpquota: | |
329 | case Opt_quota: | |
b40c2e66 | 330 | pr_err("JFS: quota operations not supported\n"); |
8fc2751b MB |
331 | break; |
332 | #endif | |
69eb66d7 DK |
333 | case Opt_uid: |
334 | { | |
335 | char *uid = args[0].from; | |
bb5e50aa FF |
336 | uid_t val; |
337 | int rc = kstrtouint(uid, 0, &val); | |
338 | ||
339 | if (rc) | |
340 | goto cleanup; | |
c18cdc1a EB |
341 | sbi->uid = make_kuid(current_user_ns(), val); |
342 | if (!uid_valid(sbi->uid)) | |
343 | goto cleanup; | |
69eb66d7 DK |
344 | break; |
345 | } | |
b40c2e66 | 346 | |
69eb66d7 DK |
347 | case Opt_gid: |
348 | { | |
349 | char *gid = args[0].from; | |
bb5e50aa FF |
350 | gid_t val; |
351 | int rc = kstrtouint(gid, 0, &val); | |
352 | ||
353 | if (rc) | |
354 | goto cleanup; | |
c18cdc1a EB |
355 | sbi->gid = make_kgid(current_user_ns(), val); |
356 | if (!gid_valid(sbi->gid)) | |
357 | goto cleanup; | |
69eb66d7 DK |
358 | break; |
359 | } | |
b40c2e66 | 360 | |
69eb66d7 DK |
361 | case Opt_umask: |
362 | { | |
363 | char *umask = args[0].from; | |
bb5e50aa FF |
364 | int rc = kstrtouint(umask, 8, &sbi->umask); |
365 | ||
366 | if (rc) | |
367 | goto cleanup; | |
69eb66d7 | 368 | if (sbi->umask & ~0777) { |
b40c2e66 | 369 | pr_err("JFS: Invalid value of umask\n"); |
69eb66d7 DK |
370 | goto cleanup; |
371 | } | |
372 | break; | |
373 | } | |
b40c2e66 TR |
374 | |
375 | case Opt_discard: | |
376 | { | |
377 | struct request_queue *q = bdev_get_queue(sb->s_bdev); | |
378 | /* if set to 1, even copying files will cause | |
379 | * trimming :O | |
380 | * -> user has more control over the online trimming | |
381 | */ | |
382 | sbi->minblks_trim = 64; | |
789602e9 | 383 | if (blk_queue_discard(q)) |
b40c2e66 | 384 | *flag |= JFS_DISCARD; |
789602e9 FF |
385 | else |
386 | pr_err("JFS: discard option not supported on device\n"); | |
b40c2e66 TR |
387 | break; |
388 | } | |
389 | ||
390 | case Opt_nodiscard: | |
391 | *flag &= ~JFS_DISCARD; | |
392 | break; | |
393 | ||
394 | case Opt_discard_minblk: | |
395 | { | |
396 | struct request_queue *q = bdev_get_queue(sb->s_bdev); | |
397 | char *minblks_trim = args[0].from; | |
bb5e50aa | 398 | int rc; |
b40c2e66 TR |
399 | if (blk_queue_discard(q)) { |
400 | *flag |= JFS_DISCARD; | |
bb5e50aa FF |
401 | rc = kstrtouint(minblks_trim, 0, |
402 | &sbi->minblks_trim); | |
403 | if (rc) | |
404 | goto cleanup; | |
405 | } else | |
789602e9 | 406 | pr_err("JFS: discard option not supported on device\n"); |
b40c2e66 TR |
407 | break; |
408 | } | |
409 | ||
1da177e4 | 410 | default: |
789602e9 FF |
411 | printk("jfs: Unrecognized mount option \"%s\" or missing value\n", |
412 | p); | |
1da177e4 LT |
413 | goto cleanup; |
414 | } | |
415 | } | |
416 | ||
417 | if (nls_map != (void *) -1) { | |
418 | /* Discard old (if remount) */ | |
6d729e44 | 419 | unload_nls(sbi->nls_tab); |
1da177e4 LT |
420 | sbi->nls_tab = nls_map; |
421 | } | |
422 | return 1; | |
423 | ||
424 | cleanup: | |
425 | if (nls_map && nls_map != (void *) -1) | |
426 | unload_nls(nls_map); | |
427 | return 0; | |
428 | } | |
429 | ||
430 | static int jfs_remount(struct super_block *sb, int *flags, char *data) | |
431 | { | |
432 | s64 newLVSize = 0; | |
433 | int rc = 0; | |
434 | int flag = JFS_SBI(sb)->flag; | |
337eb00a | 435 | int ret; |
1da177e4 | 436 | |
02b9984d | 437 | sync_filesystem(sb); |
789602e9 | 438 | if (!parse_options(data, sb, &newLVSize, &flag)) |
1da177e4 | 439 | return -EINVAL; |
22b26db6 | 440 | |
1da177e4 | 441 | if (newLVSize) { |
bc98a42c | 442 | if (sb_rdonly(sb)) { |
789602e9 | 443 | pr_err("JFS: resize requires volume to be mounted read-write\n"); |
1da177e4 LT |
444 | return -EROFS; |
445 | } | |
446 | rc = jfs_extendfs(sb, newLVSize, 0); | |
22b26db6 | 447 | if (rc) |
1da177e4 LT |
448 | return rc; |
449 | } | |
450 | ||
1751e8a6 | 451 | if (sb_rdonly(sb) && !(*flags & SB_RDONLY)) { |
7fab479b DK |
452 | /* |
453 | * Invalidate any previously read metadata. fsck may have | |
454 | * changed the on-disk data since we mounted r/o | |
455 | */ | |
456 | truncate_inode_pages(JFS_SBI(sb)->direct_inode->i_mapping, 0); | |
457 | ||
1da177e4 | 458 | JFS_SBI(sb)->flag = flag; |
337eb00a | 459 | ret = jfs_mount_rw(sb, 1); |
c79d967d CH |
460 | |
461 | /* mark the fs r/w for quota activity */ | |
1751e8a6 | 462 | sb->s_flags &= ~SB_RDONLY; |
c79d967d | 463 | |
0f0dd62f | 464 | dquot_resume(sb, -1); |
337eb00a | 465 | return ret; |
1da177e4 | 466 | } |
1751e8a6 | 467 | if (!sb_rdonly(sb) && (*flags & SB_RDONLY)) { |
0f0dd62f | 468 | rc = dquot_suspend(sb, -1); |
789602e9 | 469 | if (rc < 0) |
0f0dd62f | 470 | return rc; |
1da177e4 LT |
471 | rc = jfs_umount_rw(sb); |
472 | JFS_SBI(sb)->flag = flag; | |
473 | return rc; | |
474 | } | |
475 | if ((JFS_SBI(sb)->flag & JFS_NOINTEGRITY) != (flag & JFS_NOINTEGRITY)) | |
bc98a42c | 476 | if (!sb_rdonly(sb)) { |
1da177e4 | 477 | rc = jfs_umount_rw(sb); |
22b26db6 | 478 | if (rc) |
1da177e4 | 479 | return rc; |
22b26db6 | 480 | |
1da177e4 | 481 | JFS_SBI(sb)->flag = flag; |
337eb00a | 482 | ret = jfs_mount_rw(sb, 1); |
337eb00a | 483 | return ret; |
1da177e4 LT |
484 | } |
485 | JFS_SBI(sb)->flag = flag; | |
486 | ||
487 | return 0; | |
488 | } | |
489 | ||
490 | static int jfs_fill_super(struct super_block *sb, void *data, int silent) | |
491 | { | |
492 | struct jfs_sb_info *sbi; | |
493 | struct inode *inode; | |
494 | int rc; | |
495 | s64 newLVSize = 0; | |
eab1df71 | 496 | int flag, ret = -EINVAL; |
1da177e4 LT |
497 | |
498 | jfs_info("In jfs_read_super: s_flags=0x%lx", sb->s_flags); | |
499 | ||
789602e9 | 500 | sbi = kzalloc(sizeof(struct jfs_sb_info), GFP_KERNEL); |
22b26db6 | 501 | if (!sbi) |
087387f9 | 502 | return -ENOMEM; |
22b26db6 | 503 | |
1da177e4 | 504 | sb->s_fs_info = sbi; |
8de52778 | 505 | sb->s_max_links = JFS_LINK_MAX; |
1da177e4 | 506 | sbi->sb = sb; |
c18cdc1a EB |
507 | sbi->uid = INVALID_UID; |
508 | sbi->gid = INVALID_GID; | |
509 | sbi->umask = -1; | |
1da177e4 LT |
510 | |
511 | /* initialize the mount flag and determine the default error handler */ | |
512 | flag = JFS_ERR_REMOUNT_RO; | |
513 | ||
684bdc7f JB |
514 | if (!parse_options((char *) data, sb, &newLVSize, &flag)) |
515 | goto out_kfree; | |
1da177e4 LT |
516 | sbi->flag = flag; |
517 | ||
518 | #ifdef CONFIG_JFS_POSIX_ACL | |
1751e8a6 | 519 | sb->s_flags |= SB_POSIXACL; |
1da177e4 LT |
520 | #endif |
521 | ||
522 | if (newLVSize) { | |
b40c2e66 | 523 | pr_err("resize option for remount only\n"); |
684bdc7f | 524 | goto out_kfree; |
1da177e4 LT |
525 | } |
526 | ||
527 | /* | |
528 | * Initialize blocksize to 4K. | |
529 | */ | |
530 | sb_set_blocksize(sb, PSIZE); | |
531 | ||
532 | /* | |
533 | * Set method vectors. | |
534 | */ | |
535 | sb->s_op = &jfs_super_operations; | |
536 | sb->s_export_op = &jfs_export_operations; | |
2cc6a5a0 | 537 | sb->s_xattr = jfs_xattr_handlers; |
123e9caf CH |
538 | #ifdef CONFIG_QUOTA |
539 | sb->dq_op = &dquot_operations; | |
12fd086d | 540 | sb->s_qcop = &jfs_quotactl_ops; |
507e1fa6 | 541 | sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP; |
123e9caf | 542 | #endif |
1da177e4 | 543 | |
7fab479b DK |
544 | /* |
545 | * Initialize direct-mapping inode/address-space | |
546 | */ | |
547 | inode = new_inode(sb); | |
eab1df71 DH |
548 | if (inode == NULL) { |
549 | ret = -ENOMEM; | |
684bdc7f | 550 | goto out_unload; |
eab1df71 | 551 | } |
7fab479b | 552 | inode->i_ino = 0; |
684666e5 | 553 | inode->i_size = i_size_read(sb->s_bdev->bd_inode); |
7fab479b | 554 | inode->i_mapping->a_ops = &jfs_metapage_aops; |
5bef9151 | 555 | inode_fake_hash(inode); |
7fab479b DK |
556 | mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); |
557 | ||
558 | sbi->direct_inode = inode; | |
559 | ||
1da177e4 LT |
560 | rc = jfs_mount(sb); |
561 | if (rc) { | |
789602e9 | 562 | if (!silent) |
1da177e4 | 563 | jfs_err("jfs_mount failed w/return code = %d", rc); |
7fab479b | 564 | goto out_mount_failed; |
1da177e4 | 565 | } |
bc98a42c | 566 | if (sb_rdonly(sb)) |
1da177e4 LT |
567 | sbi->log = NULL; |
568 | else { | |
569 | rc = jfs_mount_rw(sb, 0); | |
570 | if (rc) { | |
571 | if (!silent) { | |
572 | jfs_err("jfs_mount_rw failed, return code = %d", | |
573 | rc); | |
574 | } | |
575 | goto out_no_rw; | |
576 | } | |
577 | } | |
578 | ||
579 | sb->s_magic = JFS_SUPER_MAGIC; | |
580 | ||
94b77bd8 AV |
581 | if (sbi->mntflag & JFS_OS2) |
582 | sb->s_d_op = &jfs_ci_dentry_operations; | |
583 | ||
eab1df71 DH |
584 | inode = jfs_iget(sb, ROOT_I); |
585 | if (IS_ERR(inode)) { | |
586 | ret = PTR_ERR(inode); | |
6536d289 | 587 | goto out_no_rw; |
eab1df71 | 588 | } |
48fde701 | 589 | sb->s_root = d_make_root(inode); |
1da177e4 LT |
590 | if (!sb->s_root) |
591 | goto out_no_root; | |
592 | ||
c227390c DK |
593 | /* logical blocks are represented by 40 bits in pxd_t, etc. |
594 | * and page cache is indexed by long | |
1da177e4 | 595 | */ |
c227390c | 596 | sb->s_maxbytes = min(((loff_t)sb->s_blocksize) << 40, MAX_LFS_FILESIZE); |
1da177e4 LT |
597 | sb->s_time_gran = 1; |
598 | return 0; | |
599 | ||
600 | out_no_root: | |
6536d289 | 601 | jfs_err("jfs_read_super: get root dentry failed"); |
1da177e4 LT |
602 | |
603 | out_no_rw: | |
604 | rc = jfs_umount(sb); | |
789602e9 | 605 | if (rc) |
1da177e4 | 606 | jfs_err("jfs_umount failed with return code %d", rc); |
7fab479b | 607 | out_mount_failed: |
28fd1298 | 608 | filemap_write_and_wait(sbi->direct_inode->i_mapping); |
7fab479b DK |
609 | truncate_inode_pages(sbi->direct_inode->i_mapping, 0); |
610 | make_bad_inode(sbi->direct_inode); | |
611 | iput(sbi->direct_inode); | |
612 | sbi->direct_inode = NULL; | |
684bdc7f | 613 | out_unload: |
648695c7 | 614 | unload_nls(sbi->nls_tab); |
684bdc7f | 615 | out_kfree: |
1da177e4 | 616 | kfree(sbi); |
eab1df71 | 617 | return ret; |
1da177e4 LT |
618 | } |
619 | ||
c4be0c1d | 620 | static int jfs_freeze(struct super_block *sb) |
1da177e4 LT |
621 | { |
622 | struct jfs_sb_info *sbi = JFS_SBI(sb); | |
623 | struct jfs_log *log = sbi->log; | |
e9b37667 | 624 | int rc = 0; |
1da177e4 | 625 | |
bc98a42c | 626 | if (!sb_rdonly(sb)) { |
1da177e4 | 627 | txQuiesce(sb); |
e9b37667 VM |
628 | rc = lmLogShutdown(log); |
629 | if (rc) { | |
eb8630d7 | 630 | jfs_error(sb, "lmLogShutdown failed\n"); |
e9b37667 VM |
631 | |
632 | /* let operations fail rather than hang */ | |
633 | txResume(sb); | |
634 | ||
635 | return rc; | |
636 | } | |
637 | rc = updateSuper(sb, FM_CLEAN); | |
638 | if (rc) { | |
b18db6de | 639 | jfs_err("jfs_freeze: updateSuper failed"); |
e9b37667 VM |
640 | /* |
641 | * Don't fail here. Everything succeeded except | |
642 | * marking the superblock clean, so there's really | |
643 | * no harm in leaving it frozen for now. | |
644 | */ | |
645 | } | |
1da177e4 | 646 | } |
c4be0c1d | 647 | return 0; |
1da177e4 LT |
648 | } |
649 | ||
c4be0c1d | 650 | static int jfs_unfreeze(struct super_block *sb) |
1da177e4 LT |
651 | { |
652 | struct jfs_sb_info *sbi = JFS_SBI(sb); | |
653 | struct jfs_log *log = sbi->log; | |
654 | int rc = 0; | |
655 | ||
bc98a42c | 656 | if (!sb_rdonly(sb)) { |
e9b37667 VM |
657 | rc = updateSuper(sb, FM_MOUNT); |
658 | if (rc) { | |
eb8630d7 | 659 | jfs_error(sb, "updateSuper failed\n"); |
e9b37667 VM |
660 | goto out; |
661 | } | |
662 | rc = lmLogInit(log); | |
663 | if (rc) | |
eb8630d7 | 664 | jfs_error(sb, "lmLogInit failed\n"); |
e9b37667 VM |
665 | out: |
666 | txResume(sb); | |
1da177e4 | 667 | } |
e9b37667 | 668 | return rc; |
1da177e4 LT |
669 | } |
670 | ||
152a0836 AV |
671 | static struct dentry *jfs_do_mount(struct file_system_type *fs_type, |
672 | int flags, const char *dev_name, void *data) | |
1da177e4 | 673 | { |
152a0836 | 674 | return mount_bdev(fs_type, flags, dev_name, data, jfs_fill_super); |
1da177e4 LT |
675 | } |
676 | ||
677 | static int jfs_sync_fs(struct super_block *sb, int wait) | |
678 | { | |
679 | struct jfs_log *log = JFS_SBI(sb)->log; | |
680 | ||
681 | /* log == NULL indicates read-only mount */ | |
1c627829 | 682 | if (log) { |
a1177825 JK |
683 | /* |
684 | * Write quota structures to quota file, sync_blockdev() will | |
685 | * write them to disk later | |
686 | */ | |
687 | dquot_writeback_dquots(sb, -1); | |
1da177e4 | 688 | jfs_flush_journal(log, wait); |
cbc3d65e | 689 | jfs_syncpt(log, 0); |
1c627829 | 690 | } |
1da177e4 LT |
691 | |
692 | return 0; | |
693 | } | |
694 | ||
34c80b1d | 695 | static int jfs_show_options(struct seq_file *seq, struct dentry *root) |
8fc2751b | 696 | { |
34c80b1d | 697 | struct jfs_sb_info *sbi = JFS_SBI(root->d_sb); |
8fc2751b | 698 | |
c18cdc1a EB |
699 | if (uid_valid(sbi->uid)) |
700 | seq_printf(seq, ",uid=%d", from_kuid(&init_user_ns, sbi->uid)); | |
701 | if (gid_valid(sbi->gid)) | |
702 | seq_printf(seq, ",gid=%d", from_kgid(&init_user_ns, sbi->gid)); | |
69eb66d7 DK |
703 | if (sbi->umask != -1) |
704 | seq_printf(seq, ",umask=%03o", sbi->umask); | |
8fc2751b MB |
705 | if (sbi->flag & JFS_NOINTEGRITY) |
706 | seq_puts(seq, ",nointegrity"); | |
b40c2e66 TR |
707 | if (sbi->flag & JFS_DISCARD) |
708 | seq_printf(seq, ",discard=%u", sbi->minblks_trim); | |
5c5e32ce MS |
709 | if (sbi->nls_tab) |
710 | seq_printf(seq, ",iocharset=%s", sbi->nls_tab->charset); | |
711 | if (sbi->flag & JFS_ERR_CONTINUE) | |
712 | seq_printf(seq, ",errors=continue"); | |
713 | if (sbi->flag & JFS_ERR_PANIC) | |
714 | seq_printf(seq, ",errors=panic"); | |
8fc2751b | 715 | |
115ff50b | 716 | #ifdef CONFIG_QUOTA |
8fc2751b MB |
717 | if (sbi->flag & JFS_USRQUOTA) |
718 | seq_puts(seq, ",usrquota"); | |
719 | ||
720 | if (sbi->flag & JFS_GRPQUOTA) | |
721 | seq_puts(seq, ",grpquota"); | |
722 | #endif | |
723 | ||
724 | return 0; | |
725 | } | |
726 | ||
115ff50b DK |
727 | #ifdef CONFIG_QUOTA |
728 | ||
729 | /* Read data from quotafile - avoid pagecache and such because we cannot afford | |
730 | * acquiring the locks... As quota files are never truncated and quota code | |
25985edc | 731 | * itself serializes the operations (and no one else should touch the files) |
115ff50b DK |
732 | * we don't have to be afraid of races */ |
733 | static ssize_t jfs_quota_read(struct super_block *sb, int type, char *data, | |
734 | size_t len, loff_t off) | |
735 | { | |
736 | struct inode *inode = sb_dqopt(sb)->files[type]; | |
737 | sector_t blk = off >> sb->s_blocksize_bits; | |
738 | int err = 0; | |
739 | int offset = off & (sb->s_blocksize - 1); | |
740 | int tocopy; | |
741 | size_t toread; | |
742 | struct buffer_head tmp_bh; | |
743 | struct buffer_head *bh; | |
744 | loff_t i_size = i_size_read(inode); | |
745 | ||
746 | if (off > i_size) | |
747 | return 0; | |
748 | if (off+len > i_size) | |
749 | len = i_size-off; | |
750 | toread = len; | |
751 | while (toread > 0) { | |
752 | tocopy = sb->s_blocksize - offset < toread ? | |
753 | sb->s_blocksize - offset : toread; | |
754 | ||
755 | tmp_bh.b_state = 0; | |
93407472 | 756 | tmp_bh.b_size = i_blocksize(inode); |
115ff50b DK |
757 | err = jfs_get_block(inode, blk, &tmp_bh, 0); |
758 | if (err) | |
759 | return err; | |
760 | if (!buffer_mapped(&tmp_bh)) /* A hole? */ | |
761 | memset(data, 0, tocopy); | |
762 | else { | |
763 | bh = sb_bread(sb, tmp_bh.b_blocknr); | |
764 | if (!bh) | |
765 | return -EIO; | |
766 | memcpy(data, bh->b_data+offset, tocopy); | |
767 | brelse(bh); | |
768 | } | |
769 | offset = 0; | |
770 | toread -= tocopy; | |
771 | data += tocopy; | |
772 | blk++; | |
773 | } | |
774 | return len; | |
775 | } | |
776 | ||
777 | /* Write to quotafile */ | |
778 | static ssize_t jfs_quota_write(struct super_block *sb, int type, | |
779 | const char *data, size_t len, loff_t off) | |
780 | { | |
781 | struct inode *inode = sb_dqopt(sb)->files[type]; | |
782 | sector_t blk = off >> sb->s_blocksize_bits; | |
783 | int err = 0; | |
784 | int offset = off & (sb->s_blocksize - 1); | |
785 | int tocopy; | |
786 | size_t towrite = len; | |
787 | struct buffer_head tmp_bh; | |
788 | struct buffer_head *bh; | |
789 | ||
5955102c | 790 | inode_lock(inode); |
115ff50b DK |
791 | while (towrite > 0) { |
792 | tocopy = sb->s_blocksize - offset < towrite ? | |
793 | sb->s_blocksize - offset : towrite; | |
794 | ||
795 | tmp_bh.b_state = 0; | |
93407472 | 796 | tmp_bh.b_size = i_blocksize(inode); |
115ff50b DK |
797 | err = jfs_get_block(inode, blk, &tmp_bh, 1); |
798 | if (err) | |
799 | goto out; | |
800 | if (offset || tocopy != sb->s_blocksize) | |
801 | bh = sb_bread(sb, tmp_bh.b_blocknr); | |
802 | else | |
803 | bh = sb_getblk(sb, tmp_bh.b_blocknr); | |
804 | if (!bh) { | |
805 | err = -EIO; | |
806 | goto out; | |
807 | } | |
808 | lock_buffer(bh); | |
809 | memcpy(bh->b_data+offset, data, tocopy); | |
810 | flush_dcache_page(bh->b_page); | |
811 | set_buffer_uptodate(bh); | |
812 | mark_buffer_dirty(bh); | |
813 | unlock_buffer(bh); | |
814 | brelse(bh); | |
815 | offset = 0; | |
816 | towrite -= tocopy; | |
817 | data += tocopy; | |
818 | blk++; | |
819 | } | |
820 | out: | |
9c83633a | 821 | if (len == towrite) { |
5955102c | 822 | inode_unlock(inode); |
115ff50b | 823 | return err; |
9c83633a | 824 | } |
115ff50b DK |
825 | if (inode->i_size < off+len-towrite) |
826 | i_size_write(inode, off+len-towrite); | |
078cd827 | 827 | inode->i_mtime = inode->i_ctime = current_time(inode); |
115ff50b | 828 | mark_inode_dirty(inode); |
5955102c | 829 | inode_unlock(inode); |
115ff50b DK |
830 | return len - towrite; |
831 | } | |
832 | ||
507e1fa6 JK |
833 | static struct dquot **jfs_get_dquots(struct inode *inode) |
834 | { | |
835 | return JFS_IP(inode)->i_dquot; | |
836 | } | |
12fd086d JK |
837 | |
838 | static int jfs_quota_on(struct super_block *sb, int type, int format_id, | |
839 | const struct path *path) | |
840 | { | |
841 | int err; | |
842 | struct inode *inode; | |
843 | ||
844 | err = dquot_quota_on(sb, type, format_id, path); | |
845 | if (err) | |
846 | return err; | |
847 | ||
848 | inode = d_inode(path->dentry); | |
849 | inode_lock(inode); | |
850 | JFS_IP(inode)->mode2 |= JFS_NOATIME_FL | JFS_IMMUTABLE_FL; | |
851 | inode_set_flags(inode, S_NOATIME | S_IMMUTABLE, | |
852 | S_NOATIME | S_IMMUTABLE); | |
853 | inode_unlock(inode); | |
854 | mark_inode_dirty(inode); | |
855 | ||
856 | return 0; | |
857 | } | |
858 | ||
859 | static int jfs_quota_off(struct super_block *sb, int type) | |
860 | { | |
861 | struct inode *inode = sb_dqopt(sb)->files[type]; | |
862 | int err; | |
863 | ||
864 | if (!inode || !igrab(inode)) | |
865 | goto out; | |
866 | ||
867 | err = dquot_quota_off(sb, type); | |
868 | if (err) | |
869 | goto out_put; | |
870 | ||
871 | inode_lock(inode); | |
872 | JFS_IP(inode)->mode2 &= ~(JFS_NOATIME_FL | JFS_IMMUTABLE_FL); | |
873 | inode_set_flags(inode, 0, S_NOATIME | S_IMMUTABLE); | |
874 | inode_unlock(inode); | |
875 | mark_inode_dirty(inode); | |
876 | out_put: | |
877 | iput(inode); | |
878 | return err; | |
879 | out: | |
880 | return dquot_quota_off(sb, type); | |
881 | } | |
115ff50b DK |
882 | #endif |
883 | ||
ee9b6d61 | 884 | static const struct super_operations jfs_super_operations = { |
1da177e4 | 885 | .alloc_inode = jfs_alloc_inode, |
b3b4a6e3 | 886 | .free_inode = jfs_free_inode, |
1da177e4 LT |
887 | .dirty_inode = jfs_dirty_inode, |
888 | .write_inode = jfs_write_inode, | |
62aff86f | 889 | .evict_inode = jfs_evict_inode, |
1da177e4 LT |
890 | .put_super = jfs_put_super, |
891 | .sync_fs = jfs_sync_fs, | |
c4be0c1d TS |
892 | .freeze_fs = jfs_freeze, |
893 | .unfreeze_fs = jfs_unfreeze, | |
1da177e4 LT |
894 | .statfs = jfs_statfs, |
895 | .remount_fs = jfs_remount, | |
115ff50b DK |
896 | .show_options = jfs_show_options, |
897 | #ifdef CONFIG_QUOTA | |
898 | .quota_read = jfs_quota_read, | |
899 | .quota_write = jfs_quota_write, | |
507e1fa6 | 900 | .get_dquots = jfs_get_dquots, |
115ff50b | 901 | #endif |
1da177e4 LT |
902 | }; |
903 | ||
39655164 | 904 | static const struct export_operations jfs_export_operations = { |
d425de70 CH |
905 | .fh_to_dentry = jfs_fh_to_dentry, |
906 | .fh_to_parent = jfs_fh_to_parent, | |
1da177e4 LT |
907 | .get_parent = jfs_get_parent, |
908 | }; | |
909 | ||
910 | static struct file_system_type jfs_fs_type = { | |
911 | .owner = THIS_MODULE, | |
912 | .name = "jfs", | |
152a0836 | 913 | .mount = jfs_do_mount, |
1da177e4 LT |
914 | .kill_sb = kill_block_super, |
915 | .fs_flags = FS_REQUIRES_DEV, | |
916 | }; | |
7f78e035 | 917 | MODULE_ALIAS_FS("jfs"); |
1da177e4 | 918 | |
51cc5068 | 919 | static void init_once(void *foo) |
1da177e4 LT |
920 | { |
921 | struct jfs_inode_info *jfs_ip = (struct jfs_inode_info *) foo; | |
922 | ||
a35afb83 CL |
923 | memset(jfs_ip, 0, sizeof(struct jfs_inode_info)); |
924 | INIT_LIST_HEAD(&jfs_ip->anon_inode_list); | |
925 | init_rwsem(&jfs_ip->rdwrlock); | |
926 | mutex_init(&jfs_ip->commit_mutex); | |
927 | init_rwsem(&jfs_ip->xattr_sem); | |
928 | spin_lock_init(&jfs_ip->ag_lock); | |
929 | jfs_ip->active_ag = -1; | |
a35afb83 | 930 | inode_init_once(&jfs_ip->vfs_inode); |
1da177e4 LT |
931 | } |
932 | ||
933 | static int __init init_jfs_fs(void) | |
934 | { | |
935 | int i; | |
936 | int rc; | |
937 | ||
938 | jfs_inode_cachep = | |
8d2704d3 DW |
939 | kmem_cache_create_usercopy("jfs_ip", sizeof(struct jfs_inode_info), |
940 | 0, SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD|SLAB_ACCOUNT, | |
961b33c2 | 941 | offsetof(struct jfs_inode_info, i_inline), IDATASIZE, |
8d2704d3 | 942 | init_once); |
1da177e4 LT |
943 | if (jfs_inode_cachep == NULL) |
944 | return -ENOMEM; | |
945 | ||
946 | /* | |
947 | * Metapage initialization | |
948 | */ | |
949 | rc = metapage_init(); | |
950 | if (rc) { | |
951 | jfs_err("metapage_init failed w/rc = %d", rc); | |
952 | goto free_slab; | |
953 | } | |
954 | ||
955 | /* | |
956 | * Transaction Manager initialization | |
957 | */ | |
958 | rc = txInit(); | |
959 | if (rc) { | |
960 | jfs_err("txInit failed w/rc = %d", rc); | |
961 | goto free_metapage; | |
962 | } | |
963 | ||
964 | /* | |
965 | * I/O completion thread (endio) | |
966 | */ | |
91dbb4de CH |
967 | jfsIOthread = kthread_run(jfsIOWait, NULL, "jfsIO"); |
968 | if (IS_ERR(jfsIOthread)) { | |
969 | rc = PTR_ERR(jfsIOthread); | |
970 | jfs_err("init_jfs_fs: fork failed w/rc = %d", rc); | |
1da177e4 LT |
971 | goto end_txmngr; |
972 | } | |
1da177e4 LT |
973 | |
974 | if (commit_threads < 1) | |
975 | commit_threads = num_online_cpus(); | |
976 | if (commit_threads > MAX_COMMIT_THREADS) | |
977 | commit_threads = MAX_COMMIT_THREADS; | |
978 | ||
979 | for (i = 0; i < commit_threads; i++) { | |
789602e9 FF |
980 | jfsCommitThread[i] = kthread_run(jfs_lazycommit, NULL, |
981 | "jfsCommit"); | |
91dbb4de CH |
982 | if (IS_ERR(jfsCommitThread[i])) { |
983 | rc = PTR_ERR(jfsCommitThread[i]); | |
984 | jfs_err("init_jfs_fs: fork failed w/rc = %d", rc); | |
1da177e4 LT |
985 | commit_threads = i; |
986 | goto kill_committask; | |
987 | } | |
1da177e4 LT |
988 | } |
989 | ||
91dbb4de CH |
990 | jfsSyncThread = kthread_run(jfs_sync, NULL, "jfsSync"); |
991 | if (IS_ERR(jfsSyncThread)) { | |
992 | rc = PTR_ERR(jfsSyncThread); | |
993 | jfs_err("init_jfs_fs: fork failed w/rc = %d", rc); | |
1da177e4 LT |
994 | goto kill_committask; |
995 | } | |
1da177e4 LT |
996 | |
997 | #ifdef PROC_FS_JFS | |
998 | jfs_proc_init(); | |
999 | #endif | |
1000 | ||
76bf09fc AV |
1001 | rc = register_filesystem(&jfs_fs_type); |
1002 | if (!rc) | |
1003 | return 0; | |
1da177e4 | 1004 | |
76bf09fc AV |
1005 | #ifdef PROC_FS_JFS |
1006 | jfs_proc_clean(); | |
1007 | #endif | |
1008 | kthread_stop(jfsSyncThread); | |
1da177e4 | 1009 | kill_committask: |
1da177e4 | 1010 | for (i = 0; i < commit_threads; i++) |
91dbb4de CH |
1011 | kthread_stop(jfsCommitThread[i]); |
1012 | kthread_stop(jfsIOthread); | |
1da177e4 LT |
1013 | end_txmngr: |
1014 | txExit(); | |
1015 | free_metapage: | |
1016 | metapage_exit(); | |
1017 | free_slab: | |
1018 | kmem_cache_destroy(jfs_inode_cachep); | |
1019 | return rc; | |
1020 | } | |
1021 | ||
1022 | static void __exit exit_jfs_fs(void) | |
1023 | { | |
1024 | int i; | |
1025 | ||
1026 | jfs_info("exit_jfs_fs called"); | |
1027 | ||
1da177e4 LT |
1028 | txExit(); |
1029 | metapage_exit(); | |
91dbb4de CH |
1030 | |
1031 | kthread_stop(jfsIOthread); | |
1da177e4 | 1032 | for (i = 0; i < commit_threads; i++) |
91dbb4de CH |
1033 | kthread_stop(jfsCommitThread[i]); |
1034 | kthread_stop(jfsSyncThread); | |
1da177e4 LT |
1035 | #ifdef PROC_FS_JFS |
1036 | jfs_proc_clean(); | |
1037 | #endif | |
1038 | unregister_filesystem(&jfs_fs_type); | |
8c0a8537 KS |
1039 | |
1040 | /* | |
1041 | * Make sure all delayed rcu free inodes are flushed before we | |
1042 | * destroy cache. | |
1043 | */ | |
1044 | rcu_barrier(); | |
1da177e4 LT |
1045 | kmem_cache_destroy(jfs_inode_cachep); |
1046 | } | |
1047 | ||
1048 | module_init(init_jfs_fs) | |
1049 | module_exit(exit_jfs_fs) |