Commit | Line | Data |
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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 | ||
bc98a42c | 79 | if (sb_rdonly(sb)) |
1da177e4 LT |
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 | 89 | sb->s_id); |
1751e8a6 | 90 | sb->s_flags |= SB_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 | ||
b3b4a6e3 | 127 | static void jfs_free_inode(struct inode *inode) |
fa0d7e3d | 128 | { |
b3b4a6e3 | 129 | kmem_cache_free(jfs_inode_cachep, JFS_IP(inode)); |
1da177e4 LT |
130 | } |
131 | ||
726c3342 | 132 | static int jfs_statfs(struct dentry *dentry, struct kstatfs *buf) |
1da177e4 | 133 | { |
726c3342 | 134 | struct jfs_sb_info *sbi = JFS_SBI(dentry->d_sb); |
1da177e4 LT |
135 | s64 maxinodes; |
136 | struct inomap *imap = JFS_IP(sbi->ipimap)->i_imap; | |
137 | ||
138 | jfs_info("In jfs_statfs"); | |
139 | buf->f_type = JFS_SUPER_MAGIC; | |
140 | buf->f_bsize = sbi->bsize; | |
141 | buf->f_blocks = sbi->bmap->db_mapsize; | |
142 | buf->f_bfree = sbi->bmap->db_nfree; | |
143 | buf->f_bavail = sbi->bmap->db_nfree; | |
144 | /* | |
145 | * If we really return the number of allocated & free inodes, some | |
146 | * applications will fail because they won't see enough free inodes. | |
4de80273 | 147 | * We'll try to calculate some guess as to how many inodes we can |
1da177e4 LT |
148 | * really allocate |
149 | * | |
150 | * buf->f_files = atomic_read(&imap->im_numinos); | |
151 | * buf->f_ffree = atomic_read(&imap->im_numfree); | |
152 | */ | |
153 | maxinodes = min((s64) atomic_read(&imap->im_numinos) + | |
154 | ((sbi->bmap->db_nfree >> imap->im_l2nbperiext) | |
155 | << L2INOSPEREXT), (s64) 0xffffffffLL); | |
156 | buf->f_files = maxinodes; | |
157 | buf->f_ffree = maxinodes - (atomic_read(&imap->im_numinos) - | |
158 | atomic_read(&imap->im_numfree)); | |
2e3bc612 AS |
159 | buf->f_fsid.val[0] = crc32_le(0, (char *)&sbi->uuid, |
160 | sizeof(sbi->uuid)/2); | |
161 | buf->f_fsid.val[1] = crc32_le(0, | |
162 | (char *)&sbi->uuid + sizeof(sbi->uuid)/2, | |
163 | sizeof(sbi->uuid)/2); | |
1da177e4 LT |
164 | |
165 | buf->f_namelen = JFS_NAME_MAX; | |
166 | return 0; | |
167 | } | |
168 | ||
12fd086d JK |
169 | #ifdef CONFIG_QUOTA |
170 | static int jfs_quota_off(struct super_block *sb, int type); | |
171 | static int jfs_quota_on(struct super_block *sb, int type, int format_id, | |
172 | const struct path *path); | |
173 | ||
174 | static void jfs_quota_off_umount(struct super_block *sb) | |
175 | { | |
176 | int type; | |
177 | ||
178 | for (type = 0; type < MAXQUOTAS; type++) | |
179 | jfs_quota_off(sb, type); | |
180 | } | |
181 | ||
182 | static const struct quotactl_ops jfs_quotactl_ops = { | |
183 | .quota_on = jfs_quota_on, | |
184 | .quota_off = jfs_quota_off, | |
185 | .quota_sync = dquot_quota_sync, | |
186 | .get_state = dquot_get_state, | |
187 | .set_info = dquot_set_dqinfo, | |
188 | .get_dqblk = dquot_get_dqblk, | |
189 | .set_dqblk = dquot_set_dqblk, | |
190 | .get_nextdqblk = dquot_get_next_dqblk, | |
191 | }; | |
192 | #else | |
193 | static inline void jfs_quota_off_umount(struct super_block *sb) | |
194 | { | |
195 | } | |
196 | #endif | |
197 | ||
1da177e4 LT |
198 | static void jfs_put_super(struct super_block *sb) |
199 | { | |
200 | struct jfs_sb_info *sbi = JFS_SBI(sb); | |
201 | int rc; | |
202 | ||
203 | jfs_info("In jfs_put_super"); | |
6cfd0148 | 204 | |
12fd086d | 205 | jfs_quota_off_umount(sb); |
e0ccfd95 | 206 | |
1da177e4 LT |
207 | rc = jfs_umount(sb); |
208 | if (rc) | |
209 | jfs_err("jfs_umount failed with return code %d", rc); | |
6d729e44 TG |
210 | |
211 | unload_nls(sbi->nls_tab); | |
1da177e4 | 212 | |
7fab479b DK |
213 | truncate_inode_pages(sbi->direct_inode->i_mapping, 0); |
214 | iput(sbi->direct_inode); | |
7fab479b | 215 | |
1da177e4 LT |
216 | kfree(sbi); |
217 | } | |
218 | ||
219 | enum { | |
220 | Opt_integrity, Opt_nointegrity, Opt_iocharset, Opt_resize, | |
8fc2751b | 221 | Opt_resize_nosize, Opt_errors, Opt_ignore, Opt_err, Opt_quota, |
b40c2e66 TR |
222 | Opt_usrquota, Opt_grpquota, Opt_uid, Opt_gid, Opt_umask, |
223 | Opt_discard, Opt_nodiscard, Opt_discard_minblk | |
1da177e4 LT |
224 | }; |
225 | ||
a447c093 | 226 | static const match_table_t tokens = { |
1da177e4 LT |
227 | {Opt_integrity, "integrity"}, |
228 | {Opt_nointegrity, "nointegrity"}, | |
229 | {Opt_iocharset, "iocharset=%s"}, | |
230 | {Opt_resize, "resize=%u"}, | |
231 | {Opt_resize_nosize, "resize"}, | |
232 | {Opt_errors, "errors=%s"}, | |
233 | {Opt_ignore, "noquota"}, | |
02645bcd | 234 | {Opt_quota, "quota"}, |
8fc2751b MB |
235 | {Opt_usrquota, "usrquota"}, |
236 | {Opt_grpquota, "grpquota"}, | |
69eb66d7 DK |
237 | {Opt_uid, "uid=%u"}, |
238 | {Opt_gid, "gid=%u"}, | |
239 | {Opt_umask, "umask=%u"}, | |
b40c2e66 TR |
240 | {Opt_discard, "discard"}, |
241 | {Opt_nodiscard, "nodiscard"}, | |
242 | {Opt_discard_minblk, "discard=%u"}, | |
1da177e4 LT |
243 | {Opt_err, NULL} |
244 | }; | |
245 | ||
246 | static int parse_options(char *options, struct super_block *sb, s64 *newLVSize, | |
247 | int *flag) | |
248 | { | |
249 | void *nls_map = (void *)-1; /* -1: no change; NULL: none */ | |
250 | char *p; | |
251 | struct jfs_sb_info *sbi = JFS_SBI(sb); | |
252 | ||
253 | *newLVSize = 0; | |
254 | ||
255 | if (!options) | |
256 | return 1; | |
257 | ||
258 | while ((p = strsep(&options, ",")) != NULL) { | |
259 | substring_t args[MAX_OPT_ARGS]; | |
260 | int token; | |
261 | if (!*p) | |
262 | continue; | |
263 | ||
264 | token = match_token(p, tokens, args); | |
265 | switch (token) { | |
266 | case Opt_integrity: | |
267 | *flag &= ~JFS_NOINTEGRITY; | |
268 | break; | |
269 | case Opt_nointegrity: | |
270 | *flag |= JFS_NOINTEGRITY; | |
271 | break; | |
272 | case Opt_ignore: | |
273 | /* Silently ignore the quota options */ | |
274 | /* Don't do anything ;-) */ | |
275 | break; | |
276 | case Opt_iocharset: | |
277 | if (nls_map && nls_map != (void *) -1) | |
278 | unload_nls(nls_map); | |
279 | if (!strcmp(args[0].from, "none")) | |
280 | nls_map = NULL; | |
281 | else { | |
282 | nls_map = load_nls(args[0].from); | |
283 | if (!nls_map) { | |
b40c2e66 | 284 | pr_err("JFS: charset not found\n"); |
1da177e4 LT |
285 | goto cleanup; |
286 | } | |
287 | } | |
288 | break; | |
289 | case Opt_resize: | |
290 | { | |
291 | char *resize = args[0].from; | |
bb5e50aa FF |
292 | int rc = kstrtoll(resize, 0, newLVSize); |
293 | ||
294 | if (rc) | |
295 | goto cleanup; | |
1da177e4 LT |
296 | break; |
297 | } | |
298 | case Opt_resize_nosize: | |
299 | { | |
684666e5 | 300 | *newLVSize = i_size_read(sb->s_bdev->bd_inode) >> |
1da177e4 LT |
301 | sb->s_blocksize_bits; |
302 | if (*newLVSize == 0) | |
b40c2e66 | 303 | pr_err("JFS: Cannot determine volume size\n"); |
1da177e4 LT |
304 | break; |
305 | } | |
306 | case Opt_errors: | |
307 | { | |
308 | char *errors = args[0].from; | |
309 | if (!errors || !*errors) | |
310 | goto cleanup; | |
311 | if (!strcmp(errors, "continue")) { | |
312 | *flag &= ~JFS_ERR_REMOUNT_RO; | |
313 | *flag &= ~JFS_ERR_PANIC; | |
314 | *flag |= JFS_ERR_CONTINUE; | |
315 | } else if (!strcmp(errors, "remount-ro")) { | |
316 | *flag &= ~JFS_ERR_CONTINUE; | |
317 | *flag &= ~JFS_ERR_PANIC; | |
318 | *flag |= JFS_ERR_REMOUNT_RO; | |
319 | } else if (!strcmp(errors, "panic")) { | |
320 | *flag &= ~JFS_ERR_CONTINUE; | |
321 | *flag &= ~JFS_ERR_REMOUNT_RO; | |
322 | *flag |= JFS_ERR_PANIC; | |
323 | } else { | |
b40c2e66 | 324 | pr_err("JFS: %s is an invalid error handler\n", |
1da177e4 LT |
325 | errors); |
326 | goto cleanup; | |
327 | } | |
328 | break; | |
329 | } | |
8fc2751b | 330 | |
115ff50b | 331 | #ifdef CONFIG_QUOTA |
8fc2751b MB |
332 | case Opt_quota: |
333 | case Opt_usrquota: | |
334 | *flag |= JFS_USRQUOTA; | |
335 | break; | |
336 | case Opt_grpquota: | |
337 | *flag |= JFS_GRPQUOTA; | |
338 | break; | |
339 | #else | |
340 | case Opt_usrquota: | |
341 | case Opt_grpquota: | |
342 | case Opt_quota: | |
b40c2e66 | 343 | pr_err("JFS: quota operations not supported\n"); |
8fc2751b MB |
344 | break; |
345 | #endif | |
69eb66d7 DK |
346 | case Opt_uid: |
347 | { | |
348 | char *uid = args[0].from; | |
bb5e50aa FF |
349 | uid_t val; |
350 | int rc = kstrtouint(uid, 0, &val); | |
351 | ||
352 | if (rc) | |
353 | goto cleanup; | |
c18cdc1a EB |
354 | sbi->uid = make_kuid(current_user_ns(), val); |
355 | if (!uid_valid(sbi->uid)) | |
356 | goto cleanup; | |
69eb66d7 DK |
357 | break; |
358 | } | |
b40c2e66 | 359 | |
69eb66d7 DK |
360 | case Opt_gid: |
361 | { | |
362 | char *gid = args[0].from; | |
bb5e50aa FF |
363 | gid_t val; |
364 | int rc = kstrtouint(gid, 0, &val); | |
365 | ||
366 | if (rc) | |
367 | goto cleanup; | |
c18cdc1a EB |
368 | sbi->gid = make_kgid(current_user_ns(), val); |
369 | if (!gid_valid(sbi->gid)) | |
370 | goto cleanup; | |
69eb66d7 DK |
371 | break; |
372 | } | |
b40c2e66 | 373 | |
69eb66d7 DK |
374 | case Opt_umask: |
375 | { | |
376 | char *umask = args[0].from; | |
bb5e50aa FF |
377 | int rc = kstrtouint(umask, 8, &sbi->umask); |
378 | ||
379 | if (rc) | |
380 | goto cleanup; | |
69eb66d7 | 381 | if (sbi->umask & ~0777) { |
b40c2e66 | 382 | pr_err("JFS: Invalid value of umask\n"); |
69eb66d7 DK |
383 | goto cleanup; |
384 | } | |
385 | break; | |
386 | } | |
b40c2e66 TR |
387 | |
388 | case Opt_discard: | |
389 | { | |
390 | struct request_queue *q = bdev_get_queue(sb->s_bdev); | |
391 | /* if set to 1, even copying files will cause | |
392 | * trimming :O | |
393 | * -> user has more control over the online trimming | |
394 | */ | |
395 | sbi->minblks_trim = 64; | |
789602e9 | 396 | if (blk_queue_discard(q)) |
b40c2e66 | 397 | *flag |= JFS_DISCARD; |
789602e9 FF |
398 | else |
399 | pr_err("JFS: discard option not supported on device\n"); | |
b40c2e66 TR |
400 | break; |
401 | } | |
402 | ||
403 | case Opt_nodiscard: | |
404 | *flag &= ~JFS_DISCARD; | |
405 | break; | |
406 | ||
407 | case Opt_discard_minblk: | |
408 | { | |
409 | struct request_queue *q = bdev_get_queue(sb->s_bdev); | |
410 | char *minblks_trim = args[0].from; | |
bb5e50aa | 411 | int rc; |
b40c2e66 TR |
412 | if (blk_queue_discard(q)) { |
413 | *flag |= JFS_DISCARD; | |
bb5e50aa FF |
414 | rc = kstrtouint(minblks_trim, 0, |
415 | &sbi->minblks_trim); | |
416 | if (rc) | |
417 | goto cleanup; | |
418 | } else | |
789602e9 | 419 | pr_err("JFS: discard option not supported on device\n"); |
b40c2e66 TR |
420 | break; |
421 | } | |
422 | ||
1da177e4 | 423 | default: |
789602e9 FF |
424 | printk("jfs: Unrecognized mount option \"%s\" or missing value\n", |
425 | p); | |
1da177e4 LT |
426 | goto cleanup; |
427 | } | |
428 | } | |
429 | ||
430 | if (nls_map != (void *) -1) { | |
431 | /* Discard old (if remount) */ | |
6d729e44 | 432 | unload_nls(sbi->nls_tab); |
1da177e4 LT |
433 | sbi->nls_tab = nls_map; |
434 | } | |
435 | return 1; | |
436 | ||
437 | cleanup: | |
438 | if (nls_map && nls_map != (void *) -1) | |
439 | unload_nls(nls_map); | |
440 | return 0; | |
441 | } | |
442 | ||
443 | static int jfs_remount(struct super_block *sb, int *flags, char *data) | |
444 | { | |
445 | s64 newLVSize = 0; | |
446 | int rc = 0; | |
447 | int flag = JFS_SBI(sb)->flag; | |
337eb00a | 448 | int ret; |
1da177e4 | 449 | |
02b9984d | 450 | sync_filesystem(sb); |
789602e9 | 451 | if (!parse_options(data, sb, &newLVSize, &flag)) |
1da177e4 | 452 | return -EINVAL; |
22b26db6 | 453 | |
1da177e4 | 454 | if (newLVSize) { |
bc98a42c | 455 | if (sb_rdonly(sb)) { |
789602e9 | 456 | pr_err("JFS: resize requires volume to be mounted read-write\n"); |
1da177e4 LT |
457 | return -EROFS; |
458 | } | |
459 | rc = jfs_extendfs(sb, newLVSize, 0); | |
22b26db6 | 460 | if (rc) |
1da177e4 LT |
461 | return rc; |
462 | } | |
463 | ||
1751e8a6 | 464 | if (sb_rdonly(sb) && !(*flags & SB_RDONLY)) { |
7fab479b DK |
465 | /* |
466 | * Invalidate any previously read metadata. fsck may have | |
467 | * changed the on-disk data since we mounted r/o | |
468 | */ | |
469 | truncate_inode_pages(JFS_SBI(sb)->direct_inode->i_mapping, 0); | |
470 | ||
1da177e4 | 471 | JFS_SBI(sb)->flag = flag; |
337eb00a | 472 | ret = jfs_mount_rw(sb, 1); |
c79d967d CH |
473 | |
474 | /* mark the fs r/w for quota activity */ | |
1751e8a6 | 475 | sb->s_flags &= ~SB_RDONLY; |
c79d967d | 476 | |
0f0dd62f | 477 | dquot_resume(sb, -1); |
337eb00a | 478 | return ret; |
1da177e4 | 479 | } |
1751e8a6 | 480 | if (!sb_rdonly(sb) && (*flags & SB_RDONLY)) { |
0f0dd62f | 481 | rc = dquot_suspend(sb, -1); |
789602e9 | 482 | if (rc < 0) |
0f0dd62f | 483 | return rc; |
1da177e4 LT |
484 | rc = jfs_umount_rw(sb); |
485 | JFS_SBI(sb)->flag = flag; | |
486 | return rc; | |
487 | } | |
488 | if ((JFS_SBI(sb)->flag & JFS_NOINTEGRITY) != (flag & JFS_NOINTEGRITY)) | |
bc98a42c | 489 | if (!sb_rdonly(sb)) { |
1da177e4 | 490 | rc = jfs_umount_rw(sb); |
22b26db6 | 491 | if (rc) |
1da177e4 | 492 | return rc; |
22b26db6 | 493 | |
1da177e4 | 494 | JFS_SBI(sb)->flag = flag; |
337eb00a | 495 | ret = jfs_mount_rw(sb, 1); |
337eb00a | 496 | return ret; |
1da177e4 LT |
497 | } |
498 | JFS_SBI(sb)->flag = flag; | |
499 | ||
500 | return 0; | |
501 | } | |
502 | ||
503 | static int jfs_fill_super(struct super_block *sb, void *data, int silent) | |
504 | { | |
505 | struct jfs_sb_info *sbi; | |
506 | struct inode *inode; | |
507 | int rc; | |
508 | s64 newLVSize = 0; | |
eab1df71 | 509 | int flag, ret = -EINVAL; |
1da177e4 LT |
510 | |
511 | jfs_info("In jfs_read_super: s_flags=0x%lx", sb->s_flags); | |
512 | ||
789602e9 | 513 | sbi = kzalloc(sizeof(struct jfs_sb_info), GFP_KERNEL); |
22b26db6 | 514 | if (!sbi) |
087387f9 | 515 | return -ENOMEM; |
22b26db6 | 516 | |
1da177e4 | 517 | sb->s_fs_info = sbi; |
8de52778 | 518 | sb->s_max_links = JFS_LINK_MAX; |
1da177e4 | 519 | sbi->sb = sb; |
c18cdc1a EB |
520 | sbi->uid = INVALID_UID; |
521 | sbi->gid = INVALID_GID; | |
522 | sbi->umask = -1; | |
1da177e4 LT |
523 | |
524 | /* initialize the mount flag and determine the default error handler */ | |
525 | flag = JFS_ERR_REMOUNT_RO; | |
526 | ||
684bdc7f JB |
527 | if (!parse_options((char *) data, sb, &newLVSize, &flag)) |
528 | goto out_kfree; | |
1da177e4 LT |
529 | sbi->flag = flag; |
530 | ||
531 | #ifdef CONFIG_JFS_POSIX_ACL | |
1751e8a6 | 532 | sb->s_flags |= SB_POSIXACL; |
1da177e4 LT |
533 | #endif |
534 | ||
535 | if (newLVSize) { | |
b40c2e66 | 536 | pr_err("resize option for remount only\n"); |
684bdc7f | 537 | goto out_kfree; |
1da177e4 LT |
538 | } |
539 | ||
540 | /* | |
541 | * Initialize blocksize to 4K. | |
542 | */ | |
543 | sb_set_blocksize(sb, PSIZE); | |
544 | ||
545 | /* | |
546 | * Set method vectors. | |
547 | */ | |
548 | sb->s_op = &jfs_super_operations; | |
549 | sb->s_export_op = &jfs_export_operations; | |
2cc6a5a0 | 550 | sb->s_xattr = jfs_xattr_handlers; |
123e9caf CH |
551 | #ifdef CONFIG_QUOTA |
552 | sb->dq_op = &dquot_operations; | |
12fd086d | 553 | sb->s_qcop = &jfs_quotactl_ops; |
507e1fa6 | 554 | sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP; |
123e9caf | 555 | #endif |
1da177e4 | 556 | |
7fab479b DK |
557 | /* |
558 | * Initialize direct-mapping inode/address-space | |
559 | */ | |
560 | inode = new_inode(sb); | |
eab1df71 DH |
561 | if (inode == NULL) { |
562 | ret = -ENOMEM; | |
684bdc7f | 563 | goto out_unload; |
eab1df71 | 564 | } |
7fab479b | 565 | inode->i_ino = 0; |
684666e5 | 566 | inode->i_size = i_size_read(sb->s_bdev->bd_inode); |
7fab479b | 567 | inode->i_mapping->a_ops = &jfs_metapage_aops; |
5bef9151 | 568 | inode_fake_hash(inode); |
7fab479b DK |
569 | mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); |
570 | ||
571 | sbi->direct_inode = inode; | |
572 | ||
1da177e4 LT |
573 | rc = jfs_mount(sb); |
574 | if (rc) { | |
789602e9 | 575 | if (!silent) |
1da177e4 | 576 | jfs_err("jfs_mount failed w/return code = %d", rc); |
7fab479b | 577 | goto out_mount_failed; |
1da177e4 | 578 | } |
bc98a42c | 579 | if (sb_rdonly(sb)) |
1da177e4 LT |
580 | sbi->log = NULL; |
581 | else { | |
582 | rc = jfs_mount_rw(sb, 0); | |
583 | if (rc) { | |
584 | if (!silent) { | |
585 | jfs_err("jfs_mount_rw failed, return code = %d", | |
586 | rc); | |
587 | } | |
588 | goto out_no_rw; | |
589 | } | |
590 | } | |
591 | ||
592 | sb->s_magic = JFS_SUPER_MAGIC; | |
593 | ||
94b77bd8 AV |
594 | if (sbi->mntflag & JFS_OS2) |
595 | sb->s_d_op = &jfs_ci_dentry_operations; | |
596 | ||
eab1df71 DH |
597 | inode = jfs_iget(sb, ROOT_I); |
598 | if (IS_ERR(inode)) { | |
599 | ret = PTR_ERR(inode); | |
6536d289 | 600 | goto out_no_rw; |
eab1df71 | 601 | } |
48fde701 | 602 | sb->s_root = d_make_root(inode); |
1da177e4 LT |
603 | if (!sb->s_root) |
604 | goto out_no_root; | |
605 | ||
c227390c DK |
606 | /* logical blocks are represented by 40 bits in pxd_t, etc. |
607 | * and page cache is indexed by long | |
1da177e4 | 608 | */ |
c227390c | 609 | sb->s_maxbytes = min(((loff_t)sb->s_blocksize) << 40, MAX_LFS_FILESIZE); |
1da177e4 LT |
610 | sb->s_time_gran = 1; |
611 | return 0; | |
612 | ||
613 | out_no_root: | |
6536d289 | 614 | jfs_err("jfs_read_super: get root dentry failed"); |
1da177e4 LT |
615 | |
616 | out_no_rw: | |
617 | rc = jfs_umount(sb); | |
789602e9 | 618 | if (rc) |
1da177e4 | 619 | jfs_err("jfs_umount failed with return code %d", rc); |
7fab479b | 620 | out_mount_failed: |
28fd1298 | 621 | filemap_write_and_wait(sbi->direct_inode->i_mapping); |
7fab479b DK |
622 | truncate_inode_pages(sbi->direct_inode->i_mapping, 0); |
623 | make_bad_inode(sbi->direct_inode); | |
624 | iput(sbi->direct_inode); | |
625 | sbi->direct_inode = NULL; | |
684bdc7f | 626 | out_unload: |
648695c7 | 627 | unload_nls(sbi->nls_tab); |
684bdc7f | 628 | out_kfree: |
1da177e4 | 629 | kfree(sbi); |
eab1df71 | 630 | return ret; |
1da177e4 LT |
631 | } |
632 | ||
c4be0c1d | 633 | static int jfs_freeze(struct super_block *sb) |
1da177e4 LT |
634 | { |
635 | struct jfs_sb_info *sbi = JFS_SBI(sb); | |
636 | struct jfs_log *log = sbi->log; | |
e9b37667 | 637 | int rc = 0; |
1da177e4 | 638 | |
bc98a42c | 639 | if (!sb_rdonly(sb)) { |
1da177e4 | 640 | txQuiesce(sb); |
e9b37667 VM |
641 | rc = lmLogShutdown(log); |
642 | if (rc) { | |
eb8630d7 | 643 | jfs_error(sb, "lmLogShutdown failed\n"); |
e9b37667 VM |
644 | |
645 | /* let operations fail rather than hang */ | |
646 | txResume(sb); | |
647 | ||
648 | return rc; | |
649 | } | |
650 | rc = updateSuper(sb, FM_CLEAN); | |
651 | if (rc) { | |
b18db6de | 652 | jfs_err("jfs_freeze: updateSuper failed"); |
e9b37667 VM |
653 | /* |
654 | * Don't fail here. Everything succeeded except | |
655 | * marking the superblock clean, so there's really | |
656 | * no harm in leaving it frozen for now. | |
657 | */ | |
658 | } | |
1da177e4 | 659 | } |
c4be0c1d | 660 | return 0; |
1da177e4 LT |
661 | } |
662 | ||
c4be0c1d | 663 | static int jfs_unfreeze(struct super_block *sb) |
1da177e4 LT |
664 | { |
665 | struct jfs_sb_info *sbi = JFS_SBI(sb); | |
666 | struct jfs_log *log = sbi->log; | |
667 | int rc = 0; | |
668 | ||
bc98a42c | 669 | if (!sb_rdonly(sb)) { |
e9b37667 VM |
670 | rc = updateSuper(sb, FM_MOUNT); |
671 | if (rc) { | |
eb8630d7 | 672 | jfs_error(sb, "updateSuper failed\n"); |
e9b37667 VM |
673 | goto out; |
674 | } | |
675 | rc = lmLogInit(log); | |
676 | if (rc) | |
eb8630d7 | 677 | jfs_error(sb, "lmLogInit failed\n"); |
e9b37667 VM |
678 | out: |
679 | txResume(sb); | |
1da177e4 | 680 | } |
e9b37667 | 681 | return rc; |
1da177e4 LT |
682 | } |
683 | ||
152a0836 AV |
684 | static struct dentry *jfs_do_mount(struct file_system_type *fs_type, |
685 | int flags, const char *dev_name, void *data) | |
1da177e4 | 686 | { |
152a0836 | 687 | return mount_bdev(fs_type, flags, dev_name, data, jfs_fill_super); |
1da177e4 LT |
688 | } |
689 | ||
690 | static int jfs_sync_fs(struct super_block *sb, int wait) | |
691 | { | |
692 | struct jfs_log *log = JFS_SBI(sb)->log; | |
693 | ||
694 | /* log == NULL indicates read-only mount */ | |
1c627829 | 695 | if (log) { |
a1177825 JK |
696 | /* |
697 | * Write quota structures to quota file, sync_blockdev() will | |
698 | * write them to disk later | |
699 | */ | |
700 | dquot_writeback_dquots(sb, -1); | |
1da177e4 | 701 | jfs_flush_journal(log, wait); |
cbc3d65e | 702 | jfs_syncpt(log, 0); |
1c627829 | 703 | } |
1da177e4 LT |
704 | |
705 | return 0; | |
706 | } | |
707 | ||
34c80b1d | 708 | static int jfs_show_options(struct seq_file *seq, struct dentry *root) |
8fc2751b | 709 | { |
34c80b1d | 710 | struct jfs_sb_info *sbi = JFS_SBI(root->d_sb); |
8fc2751b | 711 | |
c18cdc1a EB |
712 | if (uid_valid(sbi->uid)) |
713 | seq_printf(seq, ",uid=%d", from_kuid(&init_user_ns, sbi->uid)); | |
714 | if (gid_valid(sbi->gid)) | |
715 | seq_printf(seq, ",gid=%d", from_kgid(&init_user_ns, sbi->gid)); | |
69eb66d7 DK |
716 | if (sbi->umask != -1) |
717 | seq_printf(seq, ",umask=%03o", sbi->umask); | |
8fc2751b MB |
718 | if (sbi->flag & JFS_NOINTEGRITY) |
719 | seq_puts(seq, ",nointegrity"); | |
b40c2e66 TR |
720 | if (sbi->flag & JFS_DISCARD) |
721 | seq_printf(seq, ",discard=%u", sbi->minblks_trim); | |
5c5e32ce MS |
722 | if (sbi->nls_tab) |
723 | seq_printf(seq, ",iocharset=%s", sbi->nls_tab->charset); | |
724 | if (sbi->flag & JFS_ERR_CONTINUE) | |
725 | seq_printf(seq, ",errors=continue"); | |
726 | if (sbi->flag & JFS_ERR_PANIC) | |
727 | seq_printf(seq, ",errors=panic"); | |
8fc2751b | 728 | |
115ff50b | 729 | #ifdef CONFIG_QUOTA |
8fc2751b MB |
730 | if (sbi->flag & JFS_USRQUOTA) |
731 | seq_puts(seq, ",usrquota"); | |
732 | ||
733 | if (sbi->flag & JFS_GRPQUOTA) | |
734 | seq_puts(seq, ",grpquota"); | |
735 | #endif | |
736 | ||
737 | return 0; | |
738 | } | |
739 | ||
115ff50b DK |
740 | #ifdef CONFIG_QUOTA |
741 | ||
742 | /* Read data from quotafile - avoid pagecache and such because we cannot afford | |
743 | * acquiring the locks... As quota files are never truncated and quota code | |
25985edc | 744 | * itself serializes the operations (and no one else should touch the files) |
115ff50b DK |
745 | * we don't have to be afraid of races */ |
746 | static ssize_t jfs_quota_read(struct super_block *sb, int type, char *data, | |
747 | size_t len, loff_t off) | |
748 | { | |
749 | struct inode *inode = sb_dqopt(sb)->files[type]; | |
750 | sector_t blk = off >> sb->s_blocksize_bits; | |
751 | int err = 0; | |
752 | int offset = off & (sb->s_blocksize - 1); | |
753 | int tocopy; | |
754 | size_t toread; | |
755 | struct buffer_head tmp_bh; | |
756 | struct buffer_head *bh; | |
757 | loff_t i_size = i_size_read(inode); | |
758 | ||
759 | if (off > i_size) | |
760 | return 0; | |
761 | if (off+len > i_size) | |
762 | len = i_size-off; | |
763 | toread = len; | |
764 | while (toread > 0) { | |
765 | tocopy = sb->s_blocksize - offset < toread ? | |
766 | sb->s_blocksize - offset : toread; | |
767 | ||
768 | tmp_bh.b_state = 0; | |
93407472 | 769 | tmp_bh.b_size = i_blocksize(inode); |
115ff50b DK |
770 | err = jfs_get_block(inode, blk, &tmp_bh, 0); |
771 | if (err) | |
772 | return err; | |
773 | if (!buffer_mapped(&tmp_bh)) /* A hole? */ | |
774 | memset(data, 0, tocopy); | |
775 | else { | |
776 | bh = sb_bread(sb, tmp_bh.b_blocknr); | |
777 | if (!bh) | |
778 | return -EIO; | |
779 | memcpy(data, bh->b_data+offset, tocopy); | |
780 | brelse(bh); | |
781 | } | |
782 | offset = 0; | |
783 | toread -= tocopy; | |
784 | data += tocopy; | |
785 | blk++; | |
786 | } | |
787 | return len; | |
788 | } | |
789 | ||
790 | /* Write to quotafile */ | |
791 | static ssize_t jfs_quota_write(struct super_block *sb, int type, | |
792 | const char *data, size_t len, loff_t off) | |
793 | { | |
794 | struct inode *inode = sb_dqopt(sb)->files[type]; | |
795 | sector_t blk = off >> sb->s_blocksize_bits; | |
796 | int err = 0; | |
797 | int offset = off & (sb->s_blocksize - 1); | |
798 | int tocopy; | |
799 | size_t towrite = len; | |
800 | struct buffer_head tmp_bh; | |
801 | struct buffer_head *bh; | |
802 | ||
5955102c | 803 | inode_lock(inode); |
115ff50b DK |
804 | while (towrite > 0) { |
805 | tocopy = sb->s_blocksize - offset < towrite ? | |
806 | sb->s_blocksize - offset : towrite; | |
807 | ||
808 | tmp_bh.b_state = 0; | |
93407472 | 809 | tmp_bh.b_size = i_blocksize(inode); |
115ff50b DK |
810 | err = jfs_get_block(inode, blk, &tmp_bh, 1); |
811 | if (err) | |
812 | goto out; | |
813 | if (offset || tocopy != sb->s_blocksize) | |
814 | bh = sb_bread(sb, tmp_bh.b_blocknr); | |
815 | else | |
816 | bh = sb_getblk(sb, tmp_bh.b_blocknr); | |
817 | if (!bh) { | |
818 | err = -EIO; | |
819 | goto out; | |
820 | } | |
821 | lock_buffer(bh); | |
822 | memcpy(bh->b_data+offset, data, tocopy); | |
823 | flush_dcache_page(bh->b_page); | |
824 | set_buffer_uptodate(bh); | |
825 | mark_buffer_dirty(bh); | |
826 | unlock_buffer(bh); | |
827 | brelse(bh); | |
828 | offset = 0; | |
829 | towrite -= tocopy; | |
830 | data += tocopy; | |
831 | blk++; | |
832 | } | |
833 | out: | |
9c83633a | 834 | if (len == towrite) { |
5955102c | 835 | inode_unlock(inode); |
115ff50b | 836 | return err; |
9c83633a | 837 | } |
115ff50b DK |
838 | if (inode->i_size < off+len-towrite) |
839 | i_size_write(inode, off+len-towrite); | |
078cd827 | 840 | inode->i_mtime = inode->i_ctime = current_time(inode); |
115ff50b | 841 | mark_inode_dirty(inode); |
5955102c | 842 | inode_unlock(inode); |
115ff50b DK |
843 | return len - towrite; |
844 | } | |
845 | ||
507e1fa6 JK |
846 | static struct dquot **jfs_get_dquots(struct inode *inode) |
847 | { | |
848 | return JFS_IP(inode)->i_dquot; | |
849 | } | |
12fd086d JK |
850 | |
851 | static int jfs_quota_on(struct super_block *sb, int type, int format_id, | |
852 | const struct path *path) | |
853 | { | |
854 | int err; | |
855 | struct inode *inode; | |
856 | ||
857 | err = dquot_quota_on(sb, type, format_id, path); | |
858 | if (err) | |
859 | return err; | |
860 | ||
861 | inode = d_inode(path->dentry); | |
862 | inode_lock(inode); | |
863 | JFS_IP(inode)->mode2 |= JFS_NOATIME_FL | JFS_IMMUTABLE_FL; | |
864 | inode_set_flags(inode, S_NOATIME | S_IMMUTABLE, | |
865 | S_NOATIME | S_IMMUTABLE); | |
866 | inode_unlock(inode); | |
867 | mark_inode_dirty(inode); | |
868 | ||
869 | return 0; | |
870 | } | |
871 | ||
872 | static int jfs_quota_off(struct super_block *sb, int type) | |
873 | { | |
874 | struct inode *inode = sb_dqopt(sb)->files[type]; | |
875 | int err; | |
876 | ||
877 | if (!inode || !igrab(inode)) | |
878 | goto out; | |
879 | ||
880 | err = dquot_quota_off(sb, type); | |
881 | if (err) | |
882 | goto out_put; | |
883 | ||
884 | inode_lock(inode); | |
885 | JFS_IP(inode)->mode2 &= ~(JFS_NOATIME_FL | JFS_IMMUTABLE_FL); | |
886 | inode_set_flags(inode, 0, S_NOATIME | S_IMMUTABLE); | |
887 | inode_unlock(inode); | |
888 | mark_inode_dirty(inode); | |
889 | out_put: | |
890 | iput(inode); | |
891 | return err; | |
892 | out: | |
893 | return dquot_quota_off(sb, type); | |
894 | } | |
115ff50b DK |
895 | #endif |
896 | ||
ee9b6d61 | 897 | static const struct super_operations jfs_super_operations = { |
1da177e4 | 898 | .alloc_inode = jfs_alloc_inode, |
b3b4a6e3 | 899 | .free_inode = jfs_free_inode, |
1da177e4 LT |
900 | .dirty_inode = jfs_dirty_inode, |
901 | .write_inode = jfs_write_inode, | |
62aff86f | 902 | .evict_inode = jfs_evict_inode, |
1da177e4 LT |
903 | .put_super = jfs_put_super, |
904 | .sync_fs = jfs_sync_fs, | |
c4be0c1d TS |
905 | .freeze_fs = jfs_freeze, |
906 | .unfreeze_fs = jfs_unfreeze, | |
1da177e4 LT |
907 | .statfs = jfs_statfs, |
908 | .remount_fs = jfs_remount, | |
115ff50b DK |
909 | .show_options = jfs_show_options, |
910 | #ifdef CONFIG_QUOTA | |
911 | .quota_read = jfs_quota_read, | |
912 | .quota_write = jfs_quota_write, | |
507e1fa6 | 913 | .get_dquots = jfs_get_dquots, |
115ff50b | 914 | #endif |
1da177e4 LT |
915 | }; |
916 | ||
39655164 | 917 | static const struct export_operations jfs_export_operations = { |
d425de70 CH |
918 | .fh_to_dentry = jfs_fh_to_dentry, |
919 | .fh_to_parent = jfs_fh_to_parent, | |
1da177e4 LT |
920 | .get_parent = jfs_get_parent, |
921 | }; | |
922 | ||
923 | static struct file_system_type jfs_fs_type = { | |
924 | .owner = THIS_MODULE, | |
925 | .name = "jfs", | |
152a0836 | 926 | .mount = jfs_do_mount, |
1da177e4 LT |
927 | .kill_sb = kill_block_super, |
928 | .fs_flags = FS_REQUIRES_DEV, | |
929 | }; | |
7f78e035 | 930 | MODULE_ALIAS_FS("jfs"); |
1da177e4 | 931 | |
51cc5068 | 932 | static void init_once(void *foo) |
1da177e4 LT |
933 | { |
934 | struct jfs_inode_info *jfs_ip = (struct jfs_inode_info *) foo; | |
935 | ||
a35afb83 CL |
936 | memset(jfs_ip, 0, sizeof(struct jfs_inode_info)); |
937 | INIT_LIST_HEAD(&jfs_ip->anon_inode_list); | |
938 | init_rwsem(&jfs_ip->rdwrlock); | |
939 | mutex_init(&jfs_ip->commit_mutex); | |
940 | init_rwsem(&jfs_ip->xattr_sem); | |
941 | spin_lock_init(&jfs_ip->ag_lock); | |
942 | jfs_ip->active_ag = -1; | |
a35afb83 | 943 | inode_init_once(&jfs_ip->vfs_inode); |
1da177e4 LT |
944 | } |
945 | ||
946 | static int __init init_jfs_fs(void) | |
947 | { | |
948 | int i; | |
949 | int rc; | |
950 | ||
951 | jfs_inode_cachep = | |
8d2704d3 DW |
952 | kmem_cache_create_usercopy("jfs_ip", sizeof(struct jfs_inode_info), |
953 | 0, SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD|SLAB_ACCOUNT, | |
961b33c2 | 954 | offsetof(struct jfs_inode_info, i_inline), IDATASIZE, |
8d2704d3 | 955 | init_once); |
1da177e4 LT |
956 | if (jfs_inode_cachep == NULL) |
957 | return -ENOMEM; | |
958 | ||
959 | /* | |
960 | * Metapage initialization | |
961 | */ | |
962 | rc = metapage_init(); | |
963 | if (rc) { | |
964 | jfs_err("metapage_init failed w/rc = %d", rc); | |
965 | goto free_slab; | |
966 | } | |
967 | ||
968 | /* | |
969 | * Transaction Manager initialization | |
970 | */ | |
971 | rc = txInit(); | |
972 | if (rc) { | |
973 | jfs_err("txInit failed w/rc = %d", rc); | |
974 | goto free_metapage; | |
975 | } | |
976 | ||
977 | /* | |
978 | * I/O completion thread (endio) | |
979 | */ | |
91dbb4de CH |
980 | jfsIOthread = kthread_run(jfsIOWait, NULL, "jfsIO"); |
981 | if (IS_ERR(jfsIOthread)) { | |
982 | rc = PTR_ERR(jfsIOthread); | |
983 | jfs_err("init_jfs_fs: fork failed w/rc = %d", rc); | |
1da177e4 LT |
984 | goto end_txmngr; |
985 | } | |
1da177e4 LT |
986 | |
987 | if (commit_threads < 1) | |
988 | commit_threads = num_online_cpus(); | |
989 | if (commit_threads > MAX_COMMIT_THREADS) | |
990 | commit_threads = MAX_COMMIT_THREADS; | |
991 | ||
992 | for (i = 0; i < commit_threads; i++) { | |
789602e9 FF |
993 | jfsCommitThread[i] = kthread_run(jfs_lazycommit, NULL, |
994 | "jfsCommit"); | |
91dbb4de CH |
995 | if (IS_ERR(jfsCommitThread[i])) { |
996 | rc = PTR_ERR(jfsCommitThread[i]); | |
997 | jfs_err("init_jfs_fs: fork failed w/rc = %d", rc); | |
1da177e4 LT |
998 | commit_threads = i; |
999 | goto kill_committask; | |
1000 | } | |
1da177e4 LT |
1001 | } |
1002 | ||
91dbb4de CH |
1003 | jfsSyncThread = kthread_run(jfs_sync, NULL, "jfsSync"); |
1004 | if (IS_ERR(jfsSyncThread)) { | |
1005 | rc = PTR_ERR(jfsSyncThread); | |
1006 | jfs_err("init_jfs_fs: fork failed w/rc = %d", rc); | |
1da177e4 LT |
1007 | goto kill_committask; |
1008 | } | |
1da177e4 LT |
1009 | |
1010 | #ifdef PROC_FS_JFS | |
1011 | jfs_proc_init(); | |
1012 | #endif | |
1013 | ||
76bf09fc AV |
1014 | rc = register_filesystem(&jfs_fs_type); |
1015 | if (!rc) | |
1016 | return 0; | |
1da177e4 | 1017 | |
76bf09fc AV |
1018 | #ifdef PROC_FS_JFS |
1019 | jfs_proc_clean(); | |
1020 | #endif | |
1021 | kthread_stop(jfsSyncThread); | |
1da177e4 | 1022 | kill_committask: |
1da177e4 | 1023 | for (i = 0; i < commit_threads; i++) |
91dbb4de CH |
1024 | kthread_stop(jfsCommitThread[i]); |
1025 | kthread_stop(jfsIOthread); | |
1da177e4 LT |
1026 | end_txmngr: |
1027 | txExit(); | |
1028 | free_metapage: | |
1029 | metapage_exit(); | |
1030 | free_slab: | |
1031 | kmem_cache_destroy(jfs_inode_cachep); | |
1032 | return rc; | |
1033 | } | |
1034 | ||
1035 | static void __exit exit_jfs_fs(void) | |
1036 | { | |
1037 | int i; | |
1038 | ||
1039 | jfs_info("exit_jfs_fs called"); | |
1040 | ||
1da177e4 LT |
1041 | txExit(); |
1042 | metapage_exit(); | |
91dbb4de CH |
1043 | |
1044 | kthread_stop(jfsIOthread); | |
1da177e4 | 1045 | for (i = 0; i < commit_threads; i++) |
91dbb4de CH |
1046 | kthread_stop(jfsCommitThread[i]); |
1047 | kthread_stop(jfsSyncThread); | |
1da177e4 LT |
1048 | #ifdef PROC_FS_JFS |
1049 | jfs_proc_clean(); | |
1050 | #endif | |
1051 | unregister_filesystem(&jfs_fs_type); | |
8c0a8537 KS |
1052 | |
1053 | /* | |
1054 | * Make sure all delayed rcu free inodes are flushed before we | |
1055 | * destroy cache. | |
1056 | */ | |
1057 | rcu_barrier(); | |
1da177e4 LT |
1058 | kmem_cache_destroy(jfs_inode_cachep); |
1059 | } | |
1060 | ||
1061 | module_init(init_jfs_fs) | |
1062 | module_exit(exit_jfs_fs) |