]> nv-tegra.nvidia Code Review - linux-2.6.git/blob - fs/jfs/super.c
JFS: fix sparse warnings by moving extern declarations to headers
[linux-2.6.git] / fs / jfs / super.c
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
7  *   the Free Software Foundation; either version 2 of the License, or 
8  *   (at your option) any later version.
9  * 
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
16  *   along with this program;  if not, write to the Free Software 
17  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18  */
19
20 #include <linux/fs.h>
21 #include <linux/config.h>
22 #include <linux/module.h>
23 #include <linux/parser.h>
24 #include <linux/completion.h>
25 #include <linux/vfs.h>
26 #include <linux/moduleparam.h>
27 #include <asm/uaccess.h>
28
29 #include "jfs_incore.h"
30 #include "jfs_filsys.h"
31 #include "jfs_inode.h"
32 #include "jfs_metapage.h"
33 #include "jfs_superblock.h"
34 #include "jfs_dmap.h"
35 #include "jfs_imap.h"
36 #include "jfs_acl.h"
37 #include "jfs_debug.h"
38
39 MODULE_DESCRIPTION("The Journaled Filesystem (JFS)");
40 MODULE_AUTHOR("Steve Best/Dave Kleikamp/Barry Arndt, IBM");
41 MODULE_LICENSE("GPL");
42
43 static kmem_cache_t * jfs_inode_cachep;
44
45 static struct super_operations jfs_super_operations;
46 static struct export_operations jfs_export_operations;
47 static struct file_system_type jfs_fs_type;
48
49 #define MAX_COMMIT_THREADS 64
50 static int commit_threads = 0;
51 module_param(commit_threads, int, 0);
52 MODULE_PARM_DESC(commit_threads, "Number of commit threads");
53
54 int jfs_stop_threads;
55 static pid_t jfsIOthread;
56 static pid_t jfsCommitThread[MAX_COMMIT_THREADS];
57 static pid_t jfsSyncThread;
58 DECLARE_COMPLETION(jfsIOwait);
59
60 #ifdef CONFIG_JFS_DEBUG
61 int jfsloglevel = JFS_LOGLEVEL_WARN;
62 module_param(jfsloglevel, int, 0644);
63 MODULE_PARM_DESC(jfsloglevel, "Specify JFS loglevel (0, 1 or 2)");
64 #endif
65
66 static void jfs_handle_error(struct super_block *sb)
67 {
68         struct jfs_sb_info *sbi = JFS_SBI(sb);
69
70         if (sb->s_flags & MS_RDONLY)
71                 return;
72
73         updateSuper(sb, FM_DIRTY);
74
75         if (sbi->flag & JFS_ERR_PANIC)
76                 panic("JFS (device %s): panic forced after error\n",
77                         sb->s_id);
78         else if (sbi->flag & JFS_ERR_REMOUNT_RO) {
79                 jfs_err("ERROR: (device %s): remounting filesystem "
80                         "as read-only\n",
81                         sb->s_id);
82                 sb->s_flags |= MS_RDONLY;
83         } 
84
85         /* nothing is done for continue beyond marking the superblock dirty */
86 }
87
88 void jfs_error(struct super_block *sb, const char * function, ...)
89 {
90         static char error_buf[256];
91         va_list args;
92
93         va_start(args, function);
94         vsprintf(error_buf, function, args);
95         va_end(args);
96
97         printk(KERN_ERR "ERROR: (device %s): %s\n", sb->s_id, error_buf);
98
99         jfs_handle_error(sb);
100 }
101
102 static struct inode *jfs_alloc_inode(struct super_block *sb)
103 {
104         struct jfs_inode_info *jfs_inode;
105
106         jfs_inode = kmem_cache_alloc(jfs_inode_cachep, GFP_NOFS);
107         if (!jfs_inode)
108                 return NULL;
109         return &jfs_inode->vfs_inode;
110 }
111
112 static void jfs_destroy_inode(struct inode *inode)
113 {
114         struct jfs_inode_info *ji = JFS_IP(inode);
115
116         spin_lock_irq(&ji->ag_lock);
117         if (ji->active_ag != -1) {
118                 struct bmap *bmap = JFS_SBI(inode->i_sb)->bmap;
119                 atomic_dec(&bmap->db_active[ji->active_ag]);
120                 ji->active_ag = -1;
121         }
122         spin_unlock_irq(&ji->ag_lock);
123
124 #ifdef CONFIG_JFS_POSIX_ACL
125         if (ji->i_acl != JFS_ACL_NOT_CACHED) {
126                 posix_acl_release(ji->i_acl);
127                 ji->i_acl = JFS_ACL_NOT_CACHED;
128         }
129         if (ji->i_default_acl != JFS_ACL_NOT_CACHED) {
130                 posix_acl_release(ji->i_default_acl);
131                 ji->i_default_acl = JFS_ACL_NOT_CACHED;
132         }
133 #endif
134
135         kmem_cache_free(jfs_inode_cachep, ji);
136 }
137
138 static int jfs_statfs(struct super_block *sb, struct kstatfs *buf)
139 {
140         struct jfs_sb_info *sbi = JFS_SBI(sb);
141         s64 maxinodes;
142         struct inomap *imap = JFS_IP(sbi->ipimap)->i_imap;
143
144         jfs_info("In jfs_statfs");
145         buf->f_type = JFS_SUPER_MAGIC;
146         buf->f_bsize = sbi->bsize;
147         buf->f_blocks = sbi->bmap->db_mapsize;
148         buf->f_bfree = sbi->bmap->db_nfree;
149         buf->f_bavail = sbi->bmap->db_nfree;
150         /*
151          * If we really return the number of allocated & free inodes, some
152          * applications will fail because they won't see enough free inodes.
153          * We'll try to calculate some guess as to how may inodes we can
154          * really allocate
155          *
156          * buf->f_files = atomic_read(&imap->im_numinos);
157          * buf->f_ffree = atomic_read(&imap->im_numfree);
158          */
159         maxinodes = min((s64) atomic_read(&imap->im_numinos) +
160                         ((sbi->bmap->db_nfree >> imap->im_l2nbperiext)
161                          << L2INOSPEREXT), (s64) 0xffffffffLL);
162         buf->f_files = maxinodes;
163         buf->f_ffree = maxinodes - (atomic_read(&imap->im_numinos) -
164                                     atomic_read(&imap->im_numfree));
165
166         buf->f_namelen = JFS_NAME_MAX;
167         return 0;
168 }
169
170 static void jfs_put_super(struct super_block *sb)
171 {
172         struct jfs_sb_info *sbi = JFS_SBI(sb);
173         int rc;
174
175         jfs_info("In jfs_put_super");
176         rc = jfs_umount(sb);
177         if (rc)
178                 jfs_err("jfs_umount failed with return code %d", rc);
179         if (sbi->nls_tab)
180                 unload_nls(sbi->nls_tab);
181         sbi->nls_tab = NULL;
182
183         truncate_inode_pages(sbi->direct_inode->i_mapping, 0);
184         iput(sbi->direct_inode);
185         sbi->direct_inode = NULL;
186
187         kfree(sbi);
188 }
189
190 enum {
191         Opt_integrity, Opt_nointegrity, Opt_iocharset, Opt_resize,
192         Opt_resize_nosize, Opt_errors, Opt_ignore, Opt_err,
193 };
194
195 static match_table_t tokens = {
196         {Opt_integrity, "integrity"},
197         {Opt_nointegrity, "nointegrity"},
198         {Opt_iocharset, "iocharset=%s"},
199         {Opt_resize, "resize=%u"},
200         {Opt_resize_nosize, "resize"},
201         {Opt_errors, "errors=%s"},
202         {Opt_ignore, "noquota"},
203         {Opt_ignore, "quota"},
204         {Opt_ignore, "usrquota"},
205         {Opt_ignore, "grpquota"},
206         {Opt_err, NULL}
207 };
208
209 static int parse_options(char *options, struct super_block *sb, s64 *newLVSize,
210                          int *flag)
211 {
212         void *nls_map = (void *)-1;     /* -1: no change;  NULL: none */
213         char *p;
214         struct jfs_sb_info *sbi = JFS_SBI(sb);
215
216         *newLVSize = 0;
217
218         if (!options)
219                 return 1;
220
221         while ((p = strsep(&options, ",")) != NULL) {
222                 substring_t args[MAX_OPT_ARGS];
223                 int token;
224                 if (!*p)
225                         continue;
226
227                 token = match_token(p, tokens, args);
228                 switch (token) {
229                 case Opt_integrity:
230                         *flag &= ~JFS_NOINTEGRITY;
231                         break;
232                 case Opt_nointegrity:
233                         *flag |= JFS_NOINTEGRITY;
234                         break;
235                 case Opt_ignore:
236                         /* Silently ignore the quota options */
237                         /* Don't do anything ;-) */
238                         break;
239                 case Opt_iocharset:
240                         if (nls_map && nls_map != (void *) -1)
241                                 unload_nls(nls_map);
242                         if (!strcmp(args[0].from, "none"))
243                                 nls_map = NULL;
244                         else {
245                                 nls_map = load_nls(args[0].from);
246                                 if (!nls_map) {
247                                         printk(KERN_ERR
248                                                "JFS: charset not found\n");
249                                         goto cleanup;
250                                 }
251                         }
252                         break;
253                 case Opt_resize:
254                 {
255                         char *resize = args[0].from;
256                         *newLVSize = simple_strtoull(resize, &resize, 0);
257                         break;
258                 }
259                 case Opt_resize_nosize:
260                 {
261                         *newLVSize = sb->s_bdev->bd_inode->i_size >>
262                                 sb->s_blocksize_bits;
263                         if (*newLVSize == 0)
264                                 printk(KERN_ERR
265                                        "JFS: Cannot determine volume size\n");
266                         break;
267                 }
268                 case Opt_errors:
269                 {
270                         char *errors = args[0].from;
271                         if (!errors || !*errors)
272                                 goto cleanup;
273                         if (!strcmp(errors, "continue")) {
274                                 *flag &= ~JFS_ERR_REMOUNT_RO;
275                                 *flag &= ~JFS_ERR_PANIC;
276                                 *flag |= JFS_ERR_CONTINUE;
277                         } else if (!strcmp(errors, "remount-ro")) {
278                                 *flag &= ~JFS_ERR_CONTINUE;
279                                 *flag &= ~JFS_ERR_PANIC;
280                                 *flag |= JFS_ERR_REMOUNT_RO;
281                         } else if (!strcmp(errors, "panic")) {
282                                 *flag &= ~JFS_ERR_CONTINUE;
283                                 *flag &= ~JFS_ERR_REMOUNT_RO;
284                                 *flag |= JFS_ERR_PANIC;
285                         } else {
286                                 printk(KERN_ERR
287                                        "JFS: %s is an invalid error handler\n",
288                                        errors);
289                                 goto cleanup;
290                         }
291                         break;
292                 }
293                 default:
294                         printk("jfs: Unrecognized mount option \"%s\" "
295                                         " or missing value\n", p);
296                         goto cleanup;
297                 }
298         }
299
300         if (nls_map != (void *) -1) {
301                 /* Discard old (if remount) */
302                 if (sbi->nls_tab)
303                         unload_nls(sbi->nls_tab);
304                 sbi->nls_tab = nls_map;
305         }
306         return 1;
307
308 cleanup:
309         if (nls_map && nls_map != (void *) -1)
310                 unload_nls(nls_map);
311         return 0;
312 }
313
314 static int jfs_remount(struct super_block *sb, int *flags, char *data)
315 {
316         s64 newLVSize = 0;
317         int rc = 0;
318         int flag = JFS_SBI(sb)->flag;
319
320         if (!parse_options(data, sb, &newLVSize, &flag)) {
321                 return -EINVAL;
322         }
323         if (newLVSize) {
324                 if (sb->s_flags & MS_RDONLY) {
325                         printk(KERN_ERR
326                   "JFS: resize requires volume to be mounted read-write\n");
327                         return -EROFS;
328                 }
329                 rc = jfs_extendfs(sb, newLVSize, 0);
330                 if (rc)
331                         return rc;
332         }
333
334         if ((sb->s_flags & MS_RDONLY) && !(*flags & MS_RDONLY)) {
335                 /*
336                  * Invalidate any previously read metadata.  fsck may have
337                  * changed the on-disk data since we mounted r/o
338                  */
339                 truncate_inode_pages(JFS_SBI(sb)->direct_inode->i_mapping, 0);
340
341                 JFS_SBI(sb)->flag = flag;
342                 return jfs_mount_rw(sb, 1);
343         }
344         if ((!(sb->s_flags & MS_RDONLY)) && (*flags & MS_RDONLY)) {
345                 rc = jfs_umount_rw(sb);
346                 JFS_SBI(sb)->flag = flag;
347                 return rc;
348         }
349         if ((JFS_SBI(sb)->flag & JFS_NOINTEGRITY) != (flag & JFS_NOINTEGRITY))
350                 if (!(sb->s_flags & MS_RDONLY)) {
351                         rc = jfs_umount_rw(sb);
352                         if (rc)
353                                 return rc;
354                         JFS_SBI(sb)->flag = flag;
355                         return jfs_mount_rw(sb, 1);
356                 }
357         JFS_SBI(sb)->flag = flag;
358
359         return 0;
360 }
361
362 static int jfs_fill_super(struct super_block *sb, void *data, int silent)
363 {
364         struct jfs_sb_info *sbi;
365         struct inode *inode;
366         int rc;
367         s64 newLVSize = 0;
368         int flag;
369
370         jfs_info("In jfs_read_super: s_flags=0x%lx", sb->s_flags);
371
372         if (!new_valid_dev(sb->s_bdev->bd_dev))
373                 return -EOVERFLOW;
374
375         sbi = kmalloc(sizeof (struct jfs_sb_info), GFP_KERNEL);
376         if (!sbi)
377                 return -ENOSPC;
378         memset(sbi, 0, sizeof (struct jfs_sb_info));
379         sb->s_fs_info = sbi;
380         sbi->sb = sb;
381
382         /* initialize the mount flag and determine the default error handler */
383         flag = JFS_ERR_REMOUNT_RO;
384
385         if (!parse_options((char *) data, sb, &newLVSize, &flag)) {
386                 kfree(sbi);
387                 return -EINVAL;
388         }
389         sbi->flag = flag;
390
391 #ifdef CONFIG_JFS_POSIX_ACL
392         sb->s_flags |= MS_POSIXACL;
393 #endif
394
395         if (newLVSize) {
396                 printk(KERN_ERR "resize option for remount only\n");
397                 return -EINVAL;
398         }
399
400         /*
401          * Initialize blocksize to 4K.
402          */
403         sb_set_blocksize(sb, PSIZE);
404
405         /*
406          * Set method vectors.
407          */
408         sb->s_op = &jfs_super_operations;
409         sb->s_export_op = &jfs_export_operations;
410
411         /*
412          * Initialize direct-mapping inode/address-space
413          */
414         inode = new_inode(sb);
415         if (inode == NULL)
416                 goto out_kfree;
417         inode->i_ino = 0;
418         inode->i_nlink = 1;
419         inode->i_size = sb->s_bdev->bd_inode->i_size;
420         inode->i_mapping->a_ops = &jfs_metapage_aops;
421         mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
422
423         sbi->direct_inode = inode;
424
425         rc = jfs_mount(sb);
426         if (rc) {
427                 if (!silent) {
428                         jfs_err("jfs_mount failed w/return code = %d", rc);
429                 }
430                 goto out_mount_failed;
431         }
432         if (sb->s_flags & MS_RDONLY)
433                 sbi->log = NULL;
434         else {
435                 rc = jfs_mount_rw(sb, 0);
436                 if (rc) {
437                         if (!silent) {
438                                 jfs_err("jfs_mount_rw failed, return code = %d",
439                                         rc);
440                         }
441                         goto out_no_rw;
442                 }
443         }
444
445         sb->s_magic = JFS_SUPER_MAGIC;
446
447         inode = iget(sb, ROOT_I);
448         if (!inode || is_bad_inode(inode))
449                 goto out_no_root;
450         sb->s_root = d_alloc_root(inode);
451         if (!sb->s_root)
452                 goto out_no_root;
453
454         if (sbi->mntflag & JFS_OS2)
455                 sb->s_root->d_op = &jfs_ci_dentry_operations;
456
457         /* logical blocks are represented by 40 bits in pxd_t, etc. */
458         sb->s_maxbytes = ((u64) sb->s_blocksize) << 40;
459 #if BITS_PER_LONG == 32
460         /*
461          * Page cache is indexed by long.
462          * I would use MAX_LFS_FILESIZE, but it's only half as big
463          */
464         sb->s_maxbytes = min(((u64) PAGE_CACHE_SIZE << 32) - 1, sb->s_maxbytes);
465 #endif
466         sb->s_time_gran = 1;
467         return 0;
468
469 out_no_root:
470         jfs_err("jfs_read_super: get root inode failed");
471         if (inode)
472                 iput(inode);
473
474 out_no_rw:
475         rc = jfs_umount(sb);
476         if (rc) {
477                 jfs_err("jfs_umount failed with return code %d", rc);
478         }
479 out_mount_failed:
480         filemap_fdatawrite(sbi->direct_inode->i_mapping);
481         filemap_fdatawait(sbi->direct_inode->i_mapping);
482         truncate_inode_pages(sbi->direct_inode->i_mapping, 0);
483         make_bad_inode(sbi->direct_inode);
484         iput(sbi->direct_inode);
485         sbi->direct_inode = NULL;
486 out_kfree:
487         if (sbi->nls_tab)
488                 unload_nls(sbi->nls_tab);
489         kfree(sbi);
490         return -EINVAL;
491 }
492
493 static void jfs_write_super_lockfs(struct super_block *sb)
494 {
495         struct jfs_sb_info *sbi = JFS_SBI(sb);
496         struct jfs_log *log = sbi->log;
497
498         if (!(sb->s_flags & MS_RDONLY)) {
499                 txQuiesce(sb);
500                 lmLogShutdown(log);
501                 updateSuper(sb, FM_CLEAN);
502         }
503 }
504
505 static void jfs_unlockfs(struct super_block *sb)
506 {
507         struct jfs_sb_info *sbi = JFS_SBI(sb);
508         struct jfs_log *log = sbi->log;
509         int rc = 0;
510
511         if (!(sb->s_flags & MS_RDONLY)) {
512                 updateSuper(sb, FM_MOUNT);
513                 if ((rc = lmLogInit(log)))
514                         jfs_err("jfs_unlock failed with return code %d", rc);
515                 else
516                         txResume(sb);
517         }
518 }
519
520 static struct super_block *jfs_get_sb(struct file_system_type *fs_type, 
521         int flags, const char *dev_name, void *data)
522 {
523         return get_sb_bdev(fs_type, flags, dev_name, data, jfs_fill_super);
524 }
525
526 static int jfs_sync_fs(struct super_block *sb, int wait)
527 {
528         struct jfs_log *log = JFS_SBI(sb)->log;
529
530         /* log == NULL indicates read-only mount */
531         if (log) {
532                 jfs_flush_journal(log, wait);
533                 jfs_syncpt(log);
534         }
535
536         return 0;
537 }
538
539 static struct super_operations jfs_super_operations = {
540         .alloc_inode    = jfs_alloc_inode,
541         .destroy_inode  = jfs_destroy_inode,
542         .read_inode     = jfs_read_inode,
543         .dirty_inode    = jfs_dirty_inode,
544         .write_inode    = jfs_write_inode,
545         .delete_inode   = jfs_delete_inode,
546         .put_super      = jfs_put_super,
547         .sync_fs        = jfs_sync_fs,
548         .write_super_lockfs = jfs_write_super_lockfs,
549         .unlockfs       = jfs_unlockfs,
550         .statfs         = jfs_statfs,
551         .remount_fs     = jfs_remount,
552 };
553
554 static struct export_operations jfs_export_operations = {
555         .get_parent     = jfs_get_parent,
556 };
557
558 static struct file_system_type jfs_fs_type = {
559         .owner          = THIS_MODULE,
560         .name           = "jfs",
561         .get_sb         = jfs_get_sb,
562         .kill_sb        = kill_block_super,
563         .fs_flags       = FS_REQUIRES_DEV,
564 };
565
566 static void init_once(void *foo, kmem_cache_t * cachep, unsigned long flags)
567 {
568         struct jfs_inode_info *jfs_ip = (struct jfs_inode_info *) foo;
569
570         if ((flags & (SLAB_CTOR_VERIFY | SLAB_CTOR_CONSTRUCTOR)) ==
571             SLAB_CTOR_CONSTRUCTOR) {
572                 memset(jfs_ip, 0, sizeof(struct jfs_inode_info));
573                 INIT_LIST_HEAD(&jfs_ip->anon_inode_list);
574                 init_rwsem(&jfs_ip->rdwrlock);
575                 init_MUTEX(&jfs_ip->commit_sem);
576                 init_rwsem(&jfs_ip->xattr_sem);
577                 spin_lock_init(&jfs_ip->ag_lock);
578                 jfs_ip->active_ag = -1;
579 #ifdef CONFIG_JFS_POSIX_ACL
580                 jfs_ip->i_acl = JFS_ACL_NOT_CACHED;
581                 jfs_ip->i_default_acl = JFS_ACL_NOT_CACHED;
582 #endif
583                 inode_init_once(&jfs_ip->vfs_inode);
584         }
585 }
586
587 static int __init init_jfs_fs(void)
588 {
589         int i;
590         int rc;
591
592         jfs_inode_cachep =
593             kmem_cache_create("jfs_ip", sizeof(struct jfs_inode_info), 0, 
594                             SLAB_RECLAIM_ACCOUNT, init_once, NULL);
595         if (jfs_inode_cachep == NULL)
596                 return -ENOMEM;
597
598         /*
599          * Metapage initialization
600          */
601         rc = metapage_init();
602         if (rc) {
603                 jfs_err("metapage_init failed w/rc = %d", rc);
604                 goto free_slab;
605         }
606
607         /*
608          * Transaction Manager initialization
609          */
610         rc = txInit();
611         if (rc) {
612                 jfs_err("txInit failed w/rc = %d", rc);
613                 goto free_metapage;
614         }
615
616         /*
617          * I/O completion thread (endio)
618          */
619         jfsIOthread = kernel_thread(jfsIOWait, NULL, CLONE_KERNEL);
620         if (jfsIOthread < 0) {
621                 jfs_err("init_jfs_fs: fork failed w/rc = %d", jfsIOthread);
622                 goto end_txmngr;
623         }
624         wait_for_completion(&jfsIOwait);        /* Wait until thread starts */
625
626         if (commit_threads < 1)
627                 commit_threads = num_online_cpus();
628         if (commit_threads > MAX_COMMIT_THREADS)
629                 commit_threads = MAX_COMMIT_THREADS;
630
631         for (i = 0; i < commit_threads; i++) {
632                 jfsCommitThread[i] = kernel_thread(jfs_lazycommit, NULL,
633                                                    CLONE_KERNEL);
634                 if (jfsCommitThread[i] < 0) {
635                         jfs_err("init_jfs_fs: fork failed w/rc = %d",
636                                 jfsCommitThread[i]);
637                         commit_threads = i;
638                         goto kill_committask;
639                 }
640                 /* Wait until thread starts */
641                 wait_for_completion(&jfsIOwait);
642         }
643
644         jfsSyncThread = kernel_thread(jfs_sync, NULL, CLONE_KERNEL);
645         if (jfsSyncThread < 0) {
646                 jfs_err("init_jfs_fs: fork failed w/rc = %d", jfsSyncThread);
647                 goto kill_committask;
648         }
649         wait_for_completion(&jfsIOwait);        /* Wait until thread starts */
650
651 #ifdef PROC_FS_JFS
652         jfs_proc_init();
653 #endif
654
655         return register_filesystem(&jfs_fs_type);
656
657 kill_committask:
658         jfs_stop_threads = 1;
659         wake_up_all(&jfs_commit_thread_wait);
660         for (i = 0; i < commit_threads; i++)
661                 wait_for_completion(&jfsIOwait);
662
663         wake_up(&jfs_IO_thread_wait);
664         wait_for_completion(&jfsIOwait);        /* Wait for thread exit */
665 end_txmngr:
666         txExit();
667 free_metapage:
668         metapage_exit();
669 free_slab:
670         kmem_cache_destroy(jfs_inode_cachep);
671         return rc;
672 }
673
674 static void __exit exit_jfs_fs(void)
675 {
676         int i;
677
678         jfs_info("exit_jfs_fs called");
679
680         jfs_stop_threads = 1;
681         txExit();
682         metapage_exit();
683         wake_up(&jfs_IO_thread_wait);
684         wait_for_completion(&jfsIOwait);        /* Wait until IO thread exits */
685         wake_up_all(&jfs_commit_thread_wait);
686         for (i = 0; i < commit_threads; i++)
687                 wait_for_completion(&jfsIOwait);
688         wake_up(&jfs_sync_thread_wait);
689         wait_for_completion(&jfsIOwait);        /* Wait until Sync thread exits */
690 #ifdef PROC_FS_JFS
691         jfs_proc_clean();
692 #endif
693         unregister_filesystem(&jfs_fs_type);
694         kmem_cache_destroy(jfs_inode_cachep);
695 }
696
697 module_init(init_jfs_fs)
698 module_exit(exit_jfs_fs)