Commit | Line | Data |
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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 | ||
fd60b288 | 105 | jfs_inode = alloc_inode_sb(sb, jfs_inode_cachep, GFP_NOFS); |
1da177e4 LT |
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 | { | |
dd0c0bdf | 287 | *newLVSize = sb_bdev_nr_blocks(sb); |
1da177e4 | 288 | if (*newLVSize == 0) |
b40c2e66 | 289 | pr_err("JFS: Cannot determine volume size\n"); |
1da177e4 LT |
290 | break; |
291 | } | |
292 | case Opt_errors: | |
293 | { | |
294 | char *errors = args[0].from; | |
295 | if (!errors || !*errors) | |
296 | goto cleanup; | |
297 | if (!strcmp(errors, "continue")) { | |
298 | *flag &= ~JFS_ERR_REMOUNT_RO; | |
299 | *flag &= ~JFS_ERR_PANIC; | |
300 | *flag |= JFS_ERR_CONTINUE; | |
301 | } else if (!strcmp(errors, "remount-ro")) { | |
302 | *flag &= ~JFS_ERR_CONTINUE; | |
303 | *flag &= ~JFS_ERR_PANIC; | |
304 | *flag |= JFS_ERR_REMOUNT_RO; | |
305 | } else if (!strcmp(errors, "panic")) { | |
306 | *flag &= ~JFS_ERR_CONTINUE; | |
307 | *flag &= ~JFS_ERR_REMOUNT_RO; | |
308 | *flag |= JFS_ERR_PANIC; | |
309 | } else { | |
b40c2e66 | 310 | pr_err("JFS: %s is an invalid error handler\n", |
1da177e4 LT |
311 | errors); |
312 | goto cleanup; | |
313 | } | |
314 | break; | |
315 | } | |
8fc2751b | 316 | |
115ff50b | 317 | #ifdef CONFIG_QUOTA |
8fc2751b MB |
318 | case Opt_quota: |
319 | case Opt_usrquota: | |
320 | *flag |= JFS_USRQUOTA; | |
321 | break; | |
322 | case Opt_grpquota: | |
323 | *flag |= JFS_GRPQUOTA; | |
324 | break; | |
325 | #else | |
326 | case Opt_usrquota: | |
327 | case Opt_grpquota: | |
328 | case Opt_quota: | |
b40c2e66 | 329 | pr_err("JFS: quota operations not supported\n"); |
8fc2751b MB |
330 | break; |
331 | #endif | |
69eb66d7 DK |
332 | case Opt_uid: |
333 | { | |
334 | char *uid = args[0].from; | |
bb5e50aa FF |
335 | uid_t val; |
336 | int rc = kstrtouint(uid, 0, &val); | |
337 | ||
338 | if (rc) | |
339 | goto cleanup; | |
c18cdc1a EB |
340 | sbi->uid = make_kuid(current_user_ns(), val); |
341 | if (!uid_valid(sbi->uid)) | |
342 | goto cleanup; | |
69eb66d7 DK |
343 | break; |
344 | } | |
b40c2e66 | 345 | |
69eb66d7 DK |
346 | case Opt_gid: |
347 | { | |
348 | char *gid = args[0].from; | |
bb5e50aa FF |
349 | gid_t val; |
350 | int rc = kstrtouint(gid, 0, &val); | |
351 | ||
352 | if (rc) | |
353 | goto cleanup; | |
c18cdc1a EB |
354 | sbi->gid = make_kgid(current_user_ns(), val); |
355 | if (!gid_valid(sbi->gid)) | |
356 | goto cleanup; | |
69eb66d7 DK |
357 | break; |
358 | } | |
b40c2e66 | 359 | |
69eb66d7 DK |
360 | case Opt_umask: |
361 | { | |
362 | char *umask = args[0].from; | |
bb5e50aa FF |
363 | int rc = kstrtouint(umask, 8, &sbi->umask); |
364 | ||
365 | if (rc) | |
366 | goto cleanup; | |
69eb66d7 | 367 | if (sbi->umask & ~0777) { |
b40c2e66 | 368 | pr_err("JFS: Invalid value of umask\n"); |
69eb66d7 DK |
369 | goto cleanup; |
370 | } | |
371 | break; | |
372 | } | |
b40c2e66 TR |
373 | |
374 | case Opt_discard: | |
b40c2e66 TR |
375 | /* if set to 1, even copying files will cause |
376 | * trimming :O | |
377 | * -> user has more control over the online trimming | |
378 | */ | |
379 | sbi->minblks_trim = 64; | |
70200574 | 380 | if (bdev_max_discard_sectors(sb->s_bdev)) |
b40c2e66 | 381 | *flag |= JFS_DISCARD; |
789602e9 FF |
382 | else |
383 | pr_err("JFS: discard option not supported on device\n"); | |
b40c2e66 | 384 | break; |
b40c2e66 TR |
385 | |
386 | case Opt_nodiscard: | |
387 | *flag &= ~JFS_DISCARD; | |
388 | break; | |
389 | ||
390 | case Opt_discard_minblk: | |
391 | { | |
b40c2e66 | 392 | char *minblks_trim = args[0].from; |
bb5e50aa | 393 | int rc; |
70200574 | 394 | if (bdev_max_discard_sectors(sb->s_bdev)) { |
b40c2e66 | 395 | *flag |= JFS_DISCARD; |
bb5e50aa FF |
396 | rc = kstrtouint(minblks_trim, 0, |
397 | &sbi->minblks_trim); | |
398 | if (rc) | |
399 | goto cleanup; | |
400 | } else | |
789602e9 | 401 | pr_err("JFS: discard option not supported on device\n"); |
b40c2e66 TR |
402 | break; |
403 | } | |
404 | ||
1da177e4 | 405 | default: |
789602e9 FF |
406 | printk("jfs: Unrecognized mount option \"%s\" or missing value\n", |
407 | p); | |
1da177e4 LT |
408 | goto cleanup; |
409 | } | |
410 | } | |
411 | ||
412 | if (nls_map != (void *) -1) { | |
413 | /* Discard old (if remount) */ | |
6d729e44 | 414 | unload_nls(sbi->nls_tab); |
1da177e4 LT |
415 | sbi->nls_tab = nls_map; |
416 | } | |
417 | return 1; | |
418 | ||
419 | cleanup: | |
420 | if (nls_map && nls_map != (void *) -1) | |
421 | unload_nls(nls_map); | |
422 | return 0; | |
423 | } | |
424 | ||
425 | static int jfs_remount(struct super_block *sb, int *flags, char *data) | |
426 | { | |
427 | s64 newLVSize = 0; | |
428 | int rc = 0; | |
429 | int flag = JFS_SBI(sb)->flag; | |
337eb00a | 430 | int ret; |
1da177e4 | 431 | |
02b9984d | 432 | sync_filesystem(sb); |
789602e9 | 433 | if (!parse_options(data, sb, &newLVSize, &flag)) |
1da177e4 | 434 | return -EINVAL; |
22b26db6 | 435 | |
1da177e4 | 436 | if (newLVSize) { |
bc98a42c | 437 | if (sb_rdonly(sb)) { |
789602e9 | 438 | pr_err("JFS: resize requires volume to be mounted read-write\n"); |
1da177e4 LT |
439 | return -EROFS; |
440 | } | |
441 | rc = jfs_extendfs(sb, newLVSize, 0); | |
22b26db6 | 442 | if (rc) |
1da177e4 LT |
443 | return rc; |
444 | } | |
445 | ||
1751e8a6 | 446 | if (sb_rdonly(sb) && !(*flags & SB_RDONLY)) { |
7fab479b DK |
447 | /* |
448 | * Invalidate any previously read metadata. fsck may have | |
449 | * changed the on-disk data since we mounted r/o | |
450 | */ | |
451 | truncate_inode_pages(JFS_SBI(sb)->direct_inode->i_mapping, 0); | |
452 | ||
1da177e4 | 453 | JFS_SBI(sb)->flag = flag; |
337eb00a | 454 | ret = jfs_mount_rw(sb, 1); |
c79d967d CH |
455 | |
456 | /* mark the fs r/w for quota activity */ | |
1751e8a6 | 457 | sb->s_flags &= ~SB_RDONLY; |
c79d967d | 458 | |
0f0dd62f | 459 | dquot_resume(sb, -1); |
337eb00a | 460 | return ret; |
1da177e4 | 461 | } |
1751e8a6 | 462 | if (!sb_rdonly(sb) && (*flags & SB_RDONLY)) { |
0f0dd62f | 463 | rc = dquot_suspend(sb, -1); |
789602e9 | 464 | if (rc < 0) |
0f0dd62f | 465 | return rc; |
1da177e4 LT |
466 | rc = jfs_umount_rw(sb); |
467 | JFS_SBI(sb)->flag = flag; | |
468 | return rc; | |
469 | } | |
470 | if ((JFS_SBI(sb)->flag & JFS_NOINTEGRITY) != (flag & JFS_NOINTEGRITY)) | |
bc98a42c | 471 | if (!sb_rdonly(sb)) { |
1da177e4 | 472 | rc = jfs_umount_rw(sb); |
22b26db6 | 473 | if (rc) |
1da177e4 | 474 | return rc; |
22b26db6 | 475 | |
1da177e4 | 476 | JFS_SBI(sb)->flag = flag; |
337eb00a | 477 | ret = jfs_mount_rw(sb, 1); |
337eb00a | 478 | return ret; |
1da177e4 LT |
479 | } |
480 | JFS_SBI(sb)->flag = flag; | |
481 | ||
482 | return 0; | |
483 | } | |
484 | ||
485 | static int jfs_fill_super(struct super_block *sb, void *data, int silent) | |
486 | { | |
487 | struct jfs_sb_info *sbi; | |
488 | struct inode *inode; | |
489 | int rc; | |
490 | s64 newLVSize = 0; | |
eab1df71 | 491 | int flag, ret = -EINVAL; |
1da177e4 LT |
492 | |
493 | jfs_info("In jfs_read_super: s_flags=0x%lx", sb->s_flags); | |
494 | ||
789602e9 | 495 | sbi = kzalloc(sizeof(struct jfs_sb_info), GFP_KERNEL); |
22b26db6 | 496 | if (!sbi) |
087387f9 | 497 | return -ENOMEM; |
22b26db6 | 498 | |
1da177e4 | 499 | sb->s_fs_info = sbi; |
8de52778 | 500 | sb->s_max_links = JFS_LINK_MAX; |
22b13969 DD |
501 | sb->s_time_min = 0; |
502 | sb->s_time_max = U32_MAX; | |
1da177e4 | 503 | sbi->sb = sb; |
c18cdc1a EB |
504 | sbi->uid = INVALID_UID; |
505 | sbi->gid = INVALID_GID; | |
506 | sbi->umask = -1; | |
1da177e4 LT |
507 | |
508 | /* initialize the mount flag and determine the default error handler */ | |
509 | flag = JFS_ERR_REMOUNT_RO; | |
510 | ||
684bdc7f JB |
511 | if (!parse_options((char *) data, sb, &newLVSize, &flag)) |
512 | goto out_kfree; | |
1da177e4 LT |
513 | sbi->flag = flag; |
514 | ||
515 | #ifdef CONFIG_JFS_POSIX_ACL | |
1751e8a6 | 516 | sb->s_flags |= SB_POSIXACL; |
1da177e4 LT |
517 | #endif |
518 | ||
519 | if (newLVSize) { | |
b40c2e66 | 520 | pr_err("resize option for remount only\n"); |
684bdc7f | 521 | goto out_kfree; |
1da177e4 LT |
522 | } |
523 | ||
524 | /* | |
525 | * Initialize blocksize to 4K. | |
526 | */ | |
527 | sb_set_blocksize(sb, PSIZE); | |
528 | ||
529 | /* | |
530 | * Set method vectors. | |
531 | */ | |
532 | sb->s_op = &jfs_super_operations; | |
533 | sb->s_export_op = &jfs_export_operations; | |
2cc6a5a0 | 534 | sb->s_xattr = jfs_xattr_handlers; |
123e9caf CH |
535 | #ifdef CONFIG_QUOTA |
536 | sb->dq_op = &dquot_operations; | |
12fd086d | 537 | sb->s_qcop = &jfs_quotactl_ops; |
507e1fa6 | 538 | sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP; |
123e9caf | 539 | #endif |
1da177e4 | 540 | |
7fab479b DK |
541 | /* |
542 | * Initialize direct-mapping inode/address-space | |
543 | */ | |
544 | inode = new_inode(sb); | |
eab1df71 DH |
545 | if (inode == NULL) { |
546 | ret = -ENOMEM; | |
684bdc7f | 547 | goto out_unload; |
eab1df71 | 548 | } |
74e157e6 | 549 | inode->i_size = bdev_nr_bytes(sb->s_bdev); |
7fab479b | 550 | inode->i_mapping->a_ops = &jfs_metapage_aops; |
5bef9151 | 551 | inode_fake_hash(inode); |
7fab479b DK |
552 | mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); |
553 | ||
554 | sbi->direct_inode = inode; | |
555 | ||
1da177e4 LT |
556 | rc = jfs_mount(sb); |
557 | if (rc) { | |
789602e9 | 558 | if (!silent) |
1da177e4 | 559 | jfs_err("jfs_mount failed w/return code = %d", rc); |
7fab479b | 560 | goto out_mount_failed; |
1da177e4 | 561 | } |
bc98a42c | 562 | if (sb_rdonly(sb)) |
1da177e4 LT |
563 | sbi->log = NULL; |
564 | else { | |
565 | rc = jfs_mount_rw(sb, 0); | |
566 | if (rc) { | |
567 | if (!silent) { | |
568 | jfs_err("jfs_mount_rw failed, return code = %d", | |
569 | rc); | |
570 | } | |
571 | goto out_no_rw; | |
572 | } | |
573 | } | |
574 | ||
575 | sb->s_magic = JFS_SUPER_MAGIC; | |
576 | ||
94b77bd8 AV |
577 | if (sbi->mntflag & JFS_OS2) |
578 | sb->s_d_op = &jfs_ci_dentry_operations; | |
579 | ||
eab1df71 DH |
580 | inode = jfs_iget(sb, ROOT_I); |
581 | if (IS_ERR(inode)) { | |
582 | ret = PTR_ERR(inode); | |
6536d289 | 583 | goto out_no_rw; |
eab1df71 | 584 | } |
48fde701 | 585 | sb->s_root = d_make_root(inode); |
1da177e4 LT |
586 | if (!sb->s_root) |
587 | goto out_no_root; | |
588 | ||
c227390c DK |
589 | /* logical blocks are represented by 40 bits in pxd_t, etc. |
590 | * and page cache is indexed by long | |
1da177e4 | 591 | */ |
c227390c | 592 | sb->s_maxbytes = min(((loff_t)sb->s_blocksize) << 40, MAX_LFS_FILESIZE); |
1da177e4 LT |
593 | sb->s_time_gran = 1; |
594 | return 0; | |
595 | ||
596 | out_no_root: | |
6536d289 | 597 | jfs_err("jfs_read_super: get root dentry failed"); |
1da177e4 LT |
598 | |
599 | out_no_rw: | |
600 | rc = jfs_umount(sb); | |
789602e9 | 601 | if (rc) |
1da177e4 | 602 | jfs_err("jfs_umount failed with return code %d", rc); |
7fab479b | 603 | out_mount_failed: |
28fd1298 | 604 | filemap_write_and_wait(sbi->direct_inode->i_mapping); |
7fab479b DK |
605 | truncate_inode_pages(sbi->direct_inode->i_mapping, 0); |
606 | make_bad_inode(sbi->direct_inode); | |
607 | iput(sbi->direct_inode); | |
608 | sbi->direct_inode = NULL; | |
684bdc7f | 609 | out_unload: |
648695c7 | 610 | unload_nls(sbi->nls_tab); |
684bdc7f | 611 | out_kfree: |
1da177e4 | 612 | kfree(sbi); |
eab1df71 | 613 | return ret; |
1da177e4 LT |
614 | } |
615 | ||
c4be0c1d | 616 | static int jfs_freeze(struct super_block *sb) |
1da177e4 LT |
617 | { |
618 | struct jfs_sb_info *sbi = JFS_SBI(sb); | |
619 | struct jfs_log *log = sbi->log; | |
e9b37667 | 620 | int rc = 0; |
1da177e4 | 621 | |
bc98a42c | 622 | if (!sb_rdonly(sb)) { |
1da177e4 | 623 | txQuiesce(sb); |
e9b37667 VM |
624 | rc = lmLogShutdown(log); |
625 | if (rc) { | |
eb8630d7 | 626 | jfs_error(sb, "lmLogShutdown failed\n"); |
e9b37667 VM |
627 | |
628 | /* let operations fail rather than hang */ | |
629 | txResume(sb); | |
630 | ||
631 | return rc; | |
632 | } | |
633 | rc = updateSuper(sb, FM_CLEAN); | |
634 | if (rc) { | |
b18db6de | 635 | jfs_err("jfs_freeze: updateSuper failed"); |
e9b37667 VM |
636 | /* |
637 | * Don't fail here. Everything succeeded except | |
638 | * marking the superblock clean, so there's really | |
639 | * no harm in leaving it frozen for now. | |
640 | */ | |
641 | } | |
1da177e4 | 642 | } |
c4be0c1d | 643 | return 0; |
1da177e4 LT |
644 | } |
645 | ||
c4be0c1d | 646 | static int jfs_unfreeze(struct super_block *sb) |
1da177e4 LT |
647 | { |
648 | struct jfs_sb_info *sbi = JFS_SBI(sb); | |
649 | struct jfs_log *log = sbi->log; | |
650 | int rc = 0; | |
651 | ||
bc98a42c | 652 | if (!sb_rdonly(sb)) { |
e9b37667 VM |
653 | rc = updateSuper(sb, FM_MOUNT); |
654 | if (rc) { | |
eb8630d7 | 655 | jfs_error(sb, "updateSuper failed\n"); |
e9b37667 VM |
656 | goto out; |
657 | } | |
658 | rc = lmLogInit(log); | |
659 | if (rc) | |
eb8630d7 | 660 | jfs_error(sb, "lmLogInit failed\n"); |
e9b37667 VM |
661 | out: |
662 | txResume(sb); | |
1da177e4 | 663 | } |
e9b37667 | 664 | return rc; |
1da177e4 LT |
665 | } |
666 | ||
152a0836 AV |
667 | static struct dentry *jfs_do_mount(struct file_system_type *fs_type, |
668 | int flags, const char *dev_name, void *data) | |
1da177e4 | 669 | { |
152a0836 | 670 | return mount_bdev(fs_type, flags, dev_name, data, jfs_fill_super); |
1da177e4 LT |
671 | } |
672 | ||
673 | static int jfs_sync_fs(struct super_block *sb, int wait) | |
674 | { | |
675 | struct jfs_log *log = JFS_SBI(sb)->log; | |
676 | ||
677 | /* log == NULL indicates read-only mount */ | |
1c627829 | 678 | if (log) { |
a1177825 JK |
679 | /* |
680 | * Write quota structures to quota file, sync_blockdev() will | |
681 | * write them to disk later | |
682 | */ | |
683 | dquot_writeback_dquots(sb, -1); | |
1da177e4 | 684 | jfs_flush_journal(log, wait); |
cbc3d65e | 685 | jfs_syncpt(log, 0); |
1c627829 | 686 | } |
1da177e4 LT |
687 | |
688 | return 0; | |
689 | } | |
690 | ||
34c80b1d | 691 | static int jfs_show_options(struct seq_file *seq, struct dentry *root) |
8fc2751b | 692 | { |
34c80b1d | 693 | struct jfs_sb_info *sbi = JFS_SBI(root->d_sb); |
8fc2751b | 694 | |
c18cdc1a EB |
695 | if (uid_valid(sbi->uid)) |
696 | seq_printf(seq, ",uid=%d", from_kuid(&init_user_ns, sbi->uid)); | |
697 | if (gid_valid(sbi->gid)) | |
698 | seq_printf(seq, ",gid=%d", from_kgid(&init_user_ns, sbi->gid)); | |
69eb66d7 DK |
699 | if (sbi->umask != -1) |
700 | seq_printf(seq, ",umask=%03o", sbi->umask); | |
8fc2751b MB |
701 | if (sbi->flag & JFS_NOINTEGRITY) |
702 | seq_puts(seq, ",nointegrity"); | |
b40c2e66 TR |
703 | if (sbi->flag & JFS_DISCARD) |
704 | seq_printf(seq, ",discard=%u", sbi->minblks_trim); | |
5c5e32ce MS |
705 | if (sbi->nls_tab) |
706 | seq_printf(seq, ",iocharset=%s", sbi->nls_tab->charset); | |
707 | if (sbi->flag & JFS_ERR_CONTINUE) | |
708 | seq_printf(seq, ",errors=continue"); | |
709 | if (sbi->flag & JFS_ERR_PANIC) | |
710 | seq_printf(seq, ",errors=panic"); | |
8fc2751b | 711 | |
115ff50b | 712 | #ifdef CONFIG_QUOTA |
8fc2751b MB |
713 | if (sbi->flag & JFS_USRQUOTA) |
714 | seq_puts(seq, ",usrquota"); | |
715 | ||
716 | if (sbi->flag & JFS_GRPQUOTA) | |
717 | seq_puts(seq, ",grpquota"); | |
718 | #endif | |
719 | ||
720 | return 0; | |
721 | } | |
722 | ||
115ff50b DK |
723 | #ifdef CONFIG_QUOTA |
724 | ||
725 | /* Read data from quotafile - avoid pagecache and such because we cannot afford | |
726 | * acquiring the locks... As quota files are never truncated and quota code | |
25985edc | 727 | * itself serializes the operations (and no one else should touch the files) |
115ff50b DK |
728 | * we don't have to be afraid of races */ |
729 | static ssize_t jfs_quota_read(struct super_block *sb, int type, char *data, | |
730 | size_t len, loff_t off) | |
731 | { | |
732 | struct inode *inode = sb_dqopt(sb)->files[type]; | |
733 | sector_t blk = off >> sb->s_blocksize_bits; | |
734 | int err = 0; | |
735 | int offset = off & (sb->s_blocksize - 1); | |
736 | int tocopy; | |
737 | size_t toread; | |
738 | struct buffer_head tmp_bh; | |
739 | struct buffer_head *bh; | |
740 | loff_t i_size = i_size_read(inode); | |
741 | ||
742 | if (off > i_size) | |
743 | return 0; | |
744 | if (off+len > i_size) | |
745 | len = i_size-off; | |
746 | toread = len; | |
747 | while (toread > 0) { | |
748 | tocopy = sb->s_blocksize - offset < toread ? | |
749 | sb->s_blocksize - offset : toread; | |
750 | ||
751 | tmp_bh.b_state = 0; | |
93407472 | 752 | tmp_bh.b_size = i_blocksize(inode); |
115ff50b DK |
753 | err = jfs_get_block(inode, blk, &tmp_bh, 0); |
754 | if (err) | |
755 | return err; | |
756 | if (!buffer_mapped(&tmp_bh)) /* A hole? */ | |
757 | memset(data, 0, tocopy); | |
758 | else { | |
759 | bh = sb_bread(sb, tmp_bh.b_blocknr); | |
760 | if (!bh) | |
761 | return -EIO; | |
762 | memcpy(data, bh->b_data+offset, tocopy); | |
763 | brelse(bh); | |
764 | } | |
765 | offset = 0; | |
766 | toread -= tocopy; | |
767 | data += tocopy; | |
768 | blk++; | |
769 | } | |
770 | return len; | |
771 | } | |
772 | ||
773 | /* Write to quotafile */ | |
774 | static ssize_t jfs_quota_write(struct super_block *sb, int type, | |
775 | const char *data, size_t len, loff_t off) | |
776 | { | |
777 | struct inode *inode = sb_dqopt(sb)->files[type]; | |
778 | sector_t blk = off >> sb->s_blocksize_bits; | |
779 | int err = 0; | |
780 | int offset = off & (sb->s_blocksize - 1); | |
781 | int tocopy; | |
782 | size_t towrite = len; | |
783 | struct buffer_head tmp_bh; | |
784 | struct buffer_head *bh; | |
785 | ||
5955102c | 786 | inode_lock(inode); |
115ff50b DK |
787 | while (towrite > 0) { |
788 | tocopy = sb->s_blocksize - offset < towrite ? | |
789 | sb->s_blocksize - offset : towrite; | |
790 | ||
791 | tmp_bh.b_state = 0; | |
93407472 | 792 | tmp_bh.b_size = i_blocksize(inode); |
115ff50b DK |
793 | err = jfs_get_block(inode, blk, &tmp_bh, 1); |
794 | if (err) | |
795 | goto out; | |
796 | if (offset || tocopy != sb->s_blocksize) | |
797 | bh = sb_bread(sb, tmp_bh.b_blocknr); | |
798 | else | |
799 | bh = sb_getblk(sb, tmp_bh.b_blocknr); | |
800 | if (!bh) { | |
801 | err = -EIO; | |
802 | goto out; | |
803 | } | |
804 | lock_buffer(bh); | |
805 | memcpy(bh->b_data+offset, data, tocopy); | |
806 | flush_dcache_page(bh->b_page); | |
807 | set_buffer_uptodate(bh); | |
808 | mark_buffer_dirty(bh); | |
809 | unlock_buffer(bh); | |
810 | brelse(bh); | |
811 | offset = 0; | |
812 | towrite -= tocopy; | |
813 | data += tocopy; | |
814 | blk++; | |
815 | } | |
816 | out: | |
9c83633a | 817 | if (len == towrite) { |
5955102c | 818 | inode_unlock(inode); |
115ff50b | 819 | return err; |
9c83633a | 820 | } |
115ff50b DK |
821 | if (inode->i_size < off+len-towrite) |
822 | i_size_write(inode, off+len-towrite); | |
078cd827 | 823 | inode->i_mtime = inode->i_ctime = current_time(inode); |
115ff50b | 824 | mark_inode_dirty(inode); |
5955102c | 825 | inode_unlock(inode); |
115ff50b DK |
826 | return len - towrite; |
827 | } | |
828 | ||
507e1fa6 JK |
829 | static struct dquot **jfs_get_dquots(struct inode *inode) |
830 | { | |
831 | return JFS_IP(inode)->i_dquot; | |
832 | } | |
12fd086d JK |
833 | |
834 | static int jfs_quota_on(struct super_block *sb, int type, int format_id, | |
835 | const struct path *path) | |
836 | { | |
837 | int err; | |
838 | struct inode *inode; | |
839 | ||
840 | err = dquot_quota_on(sb, type, format_id, path); | |
841 | if (err) | |
842 | return err; | |
843 | ||
844 | inode = d_inode(path->dentry); | |
845 | inode_lock(inode); | |
846 | JFS_IP(inode)->mode2 |= JFS_NOATIME_FL | JFS_IMMUTABLE_FL; | |
847 | inode_set_flags(inode, S_NOATIME | S_IMMUTABLE, | |
848 | S_NOATIME | S_IMMUTABLE); | |
849 | inode_unlock(inode); | |
850 | mark_inode_dirty(inode); | |
851 | ||
852 | return 0; | |
853 | } | |
854 | ||
855 | static int jfs_quota_off(struct super_block *sb, int type) | |
856 | { | |
857 | struct inode *inode = sb_dqopt(sb)->files[type]; | |
858 | int err; | |
859 | ||
860 | if (!inode || !igrab(inode)) | |
861 | goto out; | |
862 | ||
863 | err = dquot_quota_off(sb, type); | |
864 | if (err) | |
865 | goto out_put; | |
866 | ||
867 | inode_lock(inode); | |
868 | JFS_IP(inode)->mode2 &= ~(JFS_NOATIME_FL | JFS_IMMUTABLE_FL); | |
869 | inode_set_flags(inode, 0, S_NOATIME | S_IMMUTABLE); | |
870 | inode_unlock(inode); | |
871 | mark_inode_dirty(inode); | |
872 | out_put: | |
873 | iput(inode); | |
874 | return err; | |
875 | out: | |
876 | return dquot_quota_off(sb, type); | |
877 | } | |
115ff50b DK |
878 | #endif |
879 | ||
ee9b6d61 | 880 | static const struct super_operations jfs_super_operations = { |
1da177e4 | 881 | .alloc_inode = jfs_alloc_inode, |
b3b4a6e3 | 882 | .free_inode = jfs_free_inode, |
1da177e4 LT |
883 | .dirty_inode = jfs_dirty_inode, |
884 | .write_inode = jfs_write_inode, | |
62aff86f | 885 | .evict_inode = jfs_evict_inode, |
1da177e4 LT |
886 | .put_super = jfs_put_super, |
887 | .sync_fs = jfs_sync_fs, | |
c4be0c1d TS |
888 | .freeze_fs = jfs_freeze, |
889 | .unfreeze_fs = jfs_unfreeze, | |
1da177e4 LT |
890 | .statfs = jfs_statfs, |
891 | .remount_fs = jfs_remount, | |
115ff50b DK |
892 | .show_options = jfs_show_options, |
893 | #ifdef CONFIG_QUOTA | |
894 | .quota_read = jfs_quota_read, | |
895 | .quota_write = jfs_quota_write, | |
507e1fa6 | 896 | .get_dquots = jfs_get_dquots, |
115ff50b | 897 | #endif |
1da177e4 LT |
898 | }; |
899 | ||
39655164 | 900 | static const struct export_operations jfs_export_operations = { |
d425de70 CH |
901 | .fh_to_dentry = jfs_fh_to_dentry, |
902 | .fh_to_parent = jfs_fh_to_parent, | |
1da177e4 LT |
903 | .get_parent = jfs_get_parent, |
904 | }; | |
905 | ||
906 | static struct file_system_type jfs_fs_type = { | |
907 | .owner = THIS_MODULE, | |
908 | .name = "jfs", | |
152a0836 | 909 | .mount = jfs_do_mount, |
1da177e4 LT |
910 | .kill_sb = kill_block_super, |
911 | .fs_flags = FS_REQUIRES_DEV, | |
912 | }; | |
7f78e035 | 913 | MODULE_ALIAS_FS("jfs"); |
1da177e4 | 914 | |
51cc5068 | 915 | static void init_once(void *foo) |
1da177e4 LT |
916 | { |
917 | struct jfs_inode_info *jfs_ip = (struct jfs_inode_info *) foo; | |
918 | ||
a35afb83 CL |
919 | memset(jfs_ip, 0, sizeof(struct jfs_inode_info)); |
920 | INIT_LIST_HEAD(&jfs_ip->anon_inode_list); | |
921 | init_rwsem(&jfs_ip->rdwrlock); | |
922 | mutex_init(&jfs_ip->commit_mutex); | |
923 | init_rwsem(&jfs_ip->xattr_sem); | |
924 | spin_lock_init(&jfs_ip->ag_lock); | |
925 | jfs_ip->active_ag = -1; | |
a35afb83 | 926 | inode_init_once(&jfs_ip->vfs_inode); |
1da177e4 LT |
927 | } |
928 | ||
929 | static int __init init_jfs_fs(void) | |
930 | { | |
931 | int i; | |
932 | int rc; | |
933 | ||
934 | jfs_inode_cachep = | |
8d2704d3 DW |
935 | kmem_cache_create_usercopy("jfs_ip", sizeof(struct jfs_inode_info), |
936 | 0, SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD|SLAB_ACCOUNT, | |
5d299f44 KC |
937 | offsetof(struct jfs_inode_info, i_inline_all), |
938 | sizeof_field(struct jfs_inode_info, i_inline_all), | |
8d2704d3 | 939 | init_once); |
1da177e4 LT |
940 | if (jfs_inode_cachep == NULL) |
941 | return -ENOMEM; | |
942 | ||
943 | /* | |
944 | * Metapage initialization | |
945 | */ | |
946 | rc = metapage_init(); | |
947 | if (rc) { | |
948 | jfs_err("metapage_init failed w/rc = %d", rc); | |
949 | goto free_slab; | |
950 | } | |
951 | ||
952 | /* | |
953 | * Transaction Manager initialization | |
954 | */ | |
955 | rc = txInit(); | |
956 | if (rc) { | |
957 | jfs_err("txInit failed w/rc = %d", rc); | |
958 | goto free_metapage; | |
959 | } | |
960 | ||
961 | /* | |
962 | * I/O completion thread (endio) | |
963 | */ | |
91dbb4de CH |
964 | jfsIOthread = kthread_run(jfsIOWait, NULL, "jfsIO"); |
965 | if (IS_ERR(jfsIOthread)) { | |
966 | rc = PTR_ERR(jfsIOthread); | |
967 | jfs_err("init_jfs_fs: fork failed w/rc = %d", rc); | |
1da177e4 LT |
968 | goto end_txmngr; |
969 | } | |
1da177e4 LT |
970 | |
971 | if (commit_threads < 1) | |
972 | commit_threads = num_online_cpus(); | |
973 | if (commit_threads > MAX_COMMIT_THREADS) | |
974 | commit_threads = MAX_COMMIT_THREADS; | |
975 | ||
976 | for (i = 0; i < commit_threads; i++) { | |
789602e9 FF |
977 | jfsCommitThread[i] = kthread_run(jfs_lazycommit, NULL, |
978 | "jfsCommit"); | |
91dbb4de CH |
979 | if (IS_ERR(jfsCommitThread[i])) { |
980 | rc = PTR_ERR(jfsCommitThread[i]); | |
981 | jfs_err("init_jfs_fs: fork failed w/rc = %d", rc); | |
1da177e4 LT |
982 | commit_threads = i; |
983 | goto kill_committask; | |
984 | } | |
1da177e4 LT |
985 | } |
986 | ||
91dbb4de CH |
987 | jfsSyncThread = kthread_run(jfs_sync, NULL, "jfsSync"); |
988 | if (IS_ERR(jfsSyncThread)) { | |
989 | rc = PTR_ERR(jfsSyncThread); | |
990 | jfs_err("init_jfs_fs: fork failed w/rc = %d", rc); | |
1da177e4 LT |
991 | goto kill_committask; |
992 | } | |
1da177e4 LT |
993 | |
994 | #ifdef PROC_FS_JFS | |
995 | jfs_proc_init(); | |
996 | #endif | |
997 | ||
76bf09fc AV |
998 | rc = register_filesystem(&jfs_fs_type); |
999 | if (!rc) | |
1000 | return 0; | |
1da177e4 | 1001 | |
76bf09fc AV |
1002 | #ifdef PROC_FS_JFS |
1003 | jfs_proc_clean(); | |
1004 | #endif | |
1005 | kthread_stop(jfsSyncThread); | |
1da177e4 | 1006 | kill_committask: |
1da177e4 | 1007 | for (i = 0; i < commit_threads; i++) |
91dbb4de CH |
1008 | kthread_stop(jfsCommitThread[i]); |
1009 | kthread_stop(jfsIOthread); | |
1da177e4 LT |
1010 | end_txmngr: |
1011 | txExit(); | |
1012 | free_metapage: | |
1013 | metapage_exit(); | |
1014 | free_slab: | |
1015 | kmem_cache_destroy(jfs_inode_cachep); | |
1016 | return rc; | |
1017 | } | |
1018 | ||
1019 | static void __exit exit_jfs_fs(void) | |
1020 | { | |
1021 | int i; | |
1022 | ||
1023 | jfs_info("exit_jfs_fs called"); | |
1024 | ||
1da177e4 LT |
1025 | txExit(); |
1026 | metapage_exit(); | |
91dbb4de CH |
1027 | |
1028 | kthread_stop(jfsIOthread); | |
1da177e4 | 1029 | for (i = 0; i < commit_threads; i++) |
91dbb4de CH |
1030 | kthread_stop(jfsCommitThread[i]); |
1031 | kthread_stop(jfsSyncThread); | |
1da177e4 LT |
1032 | #ifdef PROC_FS_JFS |
1033 | jfs_proc_clean(); | |
1034 | #endif | |
1035 | unregister_filesystem(&jfs_fs_type); | |
8c0a8537 KS |
1036 | |
1037 | /* | |
1038 | * Make sure all delayed rcu free inodes are flushed before we | |
1039 | * destroy cache. | |
1040 | */ | |
1041 | rcu_barrier(); | |
1da177e4 LT |
1042 | kmem_cache_destroy(jfs_inode_cachep); |
1043 | } | |
1044 | ||
1045 | module_init(init_jfs_fs) | |
1046 | module_exit(exit_jfs_fs) |