2 * Copyright (C) International Business Machines Corp., 2000-2004
3 * Portions Copyright (C) Christoph Hellwig, 2001-2002
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.
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.
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
21 #include <linux/module.h>
22 #include <linux/parser.h>
23 #include <linux/completion.h>
24 #include <linux/vfs.h>
25 #include <linux/quotaops.h>
26 #include <linux/mount.h>
27 #include <linux/moduleparam.h>
28 #include <linux/kthread.h>
29 #include <linux/posix_acl.h>
30 #include <linux/buffer_head.h>
31 #include <linux/exportfs.h>
32 #include <linux/crc32.h>
33 #include <linux/slab.h>
34 #include <asm/uaccess.h>
35 #include <linux/seq_file.h>
36 #include <linux/smp_lock.h>
38 #include "jfs_incore.h"
39 #include "jfs_filsys.h"
40 #include "jfs_inode.h"
41 #include "jfs_metapage.h"
42 #include "jfs_superblock.h"
46 #include "jfs_debug.h"
48 MODULE_DESCRIPTION("The Journaled Filesystem (JFS)");
49 MODULE_AUTHOR("Steve Best/Dave Kleikamp/Barry Arndt, IBM");
50 MODULE_LICENSE("GPL");
52 static struct kmem_cache
* jfs_inode_cachep
;
54 static const struct super_operations jfs_super_operations
;
55 static const struct export_operations jfs_export_operations
;
56 static struct file_system_type jfs_fs_type
;
58 #define MAX_COMMIT_THREADS 64
59 static int commit_threads
= 0;
60 module_param(commit_threads
, int, 0);
61 MODULE_PARM_DESC(commit_threads
, "Number of commit threads");
63 static struct task_struct
*jfsCommitThread
[MAX_COMMIT_THREADS
];
64 struct task_struct
*jfsIOthread
;
65 struct task_struct
*jfsSyncThread
;
67 #ifdef CONFIG_JFS_DEBUG
68 int jfsloglevel
= JFS_LOGLEVEL_WARN
;
69 module_param(jfsloglevel
, int, 0644);
70 MODULE_PARM_DESC(jfsloglevel
, "Specify JFS loglevel (0, 1 or 2)");
73 static void jfs_handle_error(struct super_block
*sb
)
75 struct jfs_sb_info
*sbi
= JFS_SBI(sb
);
77 if (sb
->s_flags
& MS_RDONLY
)
80 updateSuper(sb
, FM_DIRTY
);
82 if (sbi
->flag
& JFS_ERR_PANIC
)
83 panic("JFS (device %s): panic forced after error\n",
85 else if (sbi
->flag
& JFS_ERR_REMOUNT_RO
) {
86 jfs_err("ERROR: (device %s): remounting filesystem "
89 sb
->s_flags
|= MS_RDONLY
;
92 /* nothing is done for continue beyond marking the superblock dirty */
95 void jfs_error(struct super_block
*sb
, const char * function
, ...)
97 static char error_buf
[256];
100 va_start(args
, function
);
101 vsnprintf(error_buf
, sizeof(error_buf
), function
, args
);
104 printk(KERN_ERR
"ERROR: (device %s): %s\n", sb
->s_id
, error_buf
);
106 jfs_handle_error(sb
);
109 static struct inode
*jfs_alloc_inode(struct super_block
*sb
)
111 struct jfs_inode_info
*jfs_inode
;
113 jfs_inode
= kmem_cache_alloc(jfs_inode_cachep
, GFP_NOFS
);
116 return &jfs_inode
->vfs_inode
;
119 static void jfs_destroy_inode(struct inode
*inode
)
121 struct jfs_inode_info
*ji
= JFS_IP(inode
);
123 BUG_ON(!list_empty(&ji
->anon_inode_list
));
125 spin_lock_irq(&ji
->ag_lock
);
126 if (ji
->active_ag
!= -1) {
127 struct bmap
*bmap
= JFS_SBI(inode
->i_sb
)->bmap
;
128 atomic_dec(&bmap
->db_active
[ji
->active_ag
]);
131 spin_unlock_irq(&ji
->ag_lock
);
132 kmem_cache_free(jfs_inode_cachep
, ji
);
135 static void jfs_clear_inode(struct inode
*inode
)
140 static int jfs_statfs(struct dentry
*dentry
, struct kstatfs
*buf
)
142 struct jfs_sb_info
*sbi
= JFS_SBI(dentry
->d_sb
);
144 struct inomap
*imap
= JFS_IP(sbi
->ipimap
)->i_imap
;
146 jfs_info("In jfs_statfs");
147 buf
->f_type
= JFS_SUPER_MAGIC
;
148 buf
->f_bsize
= sbi
->bsize
;
149 buf
->f_blocks
= sbi
->bmap
->db_mapsize
;
150 buf
->f_bfree
= sbi
->bmap
->db_nfree
;
151 buf
->f_bavail
= sbi
->bmap
->db_nfree
;
153 * If we really return the number of allocated & free inodes, some
154 * applications will fail because they won't see enough free inodes.
155 * We'll try to calculate some guess as to how may inodes we can
158 * buf->f_files = atomic_read(&imap->im_numinos);
159 * buf->f_ffree = atomic_read(&imap->im_numfree);
161 maxinodes
= min((s64
) atomic_read(&imap
->im_numinos
) +
162 ((sbi
->bmap
->db_nfree
>> imap
->im_l2nbperiext
)
163 << L2INOSPEREXT
), (s64
) 0xffffffffLL
);
164 buf
->f_files
= maxinodes
;
165 buf
->f_ffree
= maxinodes
- (atomic_read(&imap
->im_numinos
) -
166 atomic_read(&imap
->im_numfree
));
167 buf
->f_fsid
.val
[0] = (u32
)crc32_le(0, sbi
->uuid
, sizeof(sbi
->uuid
)/2);
168 buf
->f_fsid
.val
[1] = (u32
)crc32_le(0, sbi
->uuid
+ sizeof(sbi
->uuid
)/2,
169 sizeof(sbi
->uuid
)/2);
171 buf
->f_namelen
= JFS_NAME_MAX
;
175 static void jfs_put_super(struct super_block
*sb
)
177 struct jfs_sb_info
*sbi
= JFS_SBI(sb
);
180 jfs_info("In jfs_put_super");
182 dquot_disable(sb
, -1, DQUOT_USAGE_ENABLED
| DQUOT_LIMITS_ENABLED
);
188 jfs_err("jfs_umount failed with return code %d", rc
);
190 unload_nls(sbi
->nls_tab
);
192 truncate_inode_pages(sbi
->direct_inode
->i_mapping
, 0);
193 iput(sbi
->direct_inode
);
201 Opt_integrity
, Opt_nointegrity
, Opt_iocharset
, Opt_resize
,
202 Opt_resize_nosize
, Opt_errors
, Opt_ignore
, Opt_err
, Opt_quota
,
203 Opt_usrquota
, Opt_grpquota
, Opt_uid
, Opt_gid
, Opt_umask
206 static const match_table_t tokens
= {
207 {Opt_integrity
, "integrity"},
208 {Opt_nointegrity
, "nointegrity"},
209 {Opt_iocharset
, "iocharset=%s"},
210 {Opt_resize
, "resize=%u"},
211 {Opt_resize_nosize
, "resize"},
212 {Opt_errors
, "errors=%s"},
213 {Opt_ignore
, "noquota"},
214 {Opt_ignore
, "quota"},
215 {Opt_usrquota
, "usrquota"},
216 {Opt_grpquota
, "grpquota"},
219 {Opt_umask
, "umask=%u"},
223 static int parse_options(char *options
, struct super_block
*sb
, s64
*newLVSize
,
226 void *nls_map
= (void *)-1; /* -1: no change; NULL: none */
228 struct jfs_sb_info
*sbi
= JFS_SBI(sb
);
235 while ((p
= strsep(&options
, ",")) != NULL
) {
236 substring_t args
[MAX_OPT_ARGS
];
241 token
= match_token(p
, tokens
, args
);
244 *flag
&= ~JFS_NOINTEGRITY
;
246 case Opt_nointegrity
:
247 *flag
|= JFS_NOINTEGRITY
;
250 /* Silently ignore the quota options */
251 /* Don't do anything ;-) */
254 if (nls_map
&& nls_map
!= (void *) -1)
256 if (!strcmp(args
[0].from
, "none"))
259 nls_map
= load_nls(args
[0].from
);
262 "JFS: charset not found\n");
269 char *resize
= args
[0].from
;
270 *newLVSize
= simple_strtoull(resize
, &resize
, 0);
273 case Opt_resize_nosize
:
275 *newLVSize
= sb
->s_bdev
->bd_inode
->i_size
>>
276 sb
->s_blocksize_bits
;
279 "JFS: Cannot determine volume size\n");
284 char *errors
= args
[0].from
;
285 if (!errors
|| !*errors
)
287 if (!strcmp(errors
, "continue")) {
288 *flag
&= ~JFS_ERR_REMOUNT_RO
;
289 *flag
&= ~JFS_ERR_PANIC
;
290 *flag
|= JFS_ERR_CONTINUE
;
291 } else if (!strcmp(errors
, "remount-ro")) {
292 *flag
&= ~JFS_ERR_CONTINUE
;
293 *flag
&= ~JFS_ERR_PANIC
;
294 *flag
|= JFS_ERR_REMOUNT_RO
;
295 } else if (!strcmp(errors
, "panic")) {
296 *flag
&= ~JFS_ERR_CONTINUE
;
297 *flag
&= ~JFS_ERR_REMOUNT_RO
;
298 *flag
|= JFS_ERR_PANIC
;
301 "JFS: %s is an invalid error handler\n",
311 *flag
|= JFS_USRQUOTA
;
314 *flag
|= JFS_GRPQUOTA
;
321 "JFS: quota operations not supported\n");
326 char *uid
= args
[0].from
;
327 sbi
->uid
= simple_strtoul(uid
, &uid
, 0);
332 char *gid
= args
[0].from
;
333 sbi
->gid
= simple_strtoul(gid
, &gid
, 0);
338 char *umask
= args
[0].from
;
339 sbi
->umask
= simple_strtoul(umask
, &umask
, 8);
340 if (sbi
->umask
& ~0777) {
342 "JFS: Invalid value of umask\n");
348 printk("jfs: Unrecognized mount option \"%s\" "
349 " or missing value\n", p
);
354 if (nls_map
!= (void *) -1) {
355 /* Discard old (if remount) */
356 unload_nls(sbi
->nls_tab
);
357 sbi
->nls_tab
= nls_map
;
362 if (nls_map
&& nls_map
!= (void *) -1)
367 static int jfs_remount(struct super_block
*sb
, int *flags
, char *data
)
371 int flag
= JFS_SBI(sb
)->flag
;
374 if (!parse_options(data
, sb
, &newLVSize
, &flag
)) {
379 if (sb
->s_flags
& MS_RDONLY
) {
381 "JFS: resize requires volume to be mounted read-write\n");
385 rc
= jfs_extendfs(sb
, newLVSize
, 0);
392 if ((sb
->s_flags
& MS_RDONLY
) && !(*flags
& MS_RDONLY
)) {
394 * Invalidate any previously read metadata. fsck may have
395 * changed the on-disk data since we mounted r/o
397 truncate_inode_pages(JFS_SBI(sb
)->direct_inode
->i_mapping
, 0);
399 JFS_SBI(sb
)->flag
= flag
;
400 ret
= jfs_mount_rw(sb
, 1);
402 /* mark the fs r/w for quota activity */
403 sb
->s_flags
&= ~MS_RDONLY
;
406 dquot_resume(sb
, -1);
409 if ((!(sb
->s_flags
& MS_RDONLY
)) && (*flags
& MS_RDONLY
)) {
410 rc
= dquot_suspend(sb
, -1);
415 rc
= jfs_umount_rw(sb
);
416 JFS_SBI(sb
)->flag
= flag
;
420 if ((JFS_SBI(sb
)->flag
& JFS_NOINTEGRITY
) != (flag
& JFS_NOINTEGRITY
))
421 if (!(sb
->s_flags
& MS_RDONLY
)) {
422 rc
= jfs_umount_rw(sb
);
427 JFS_SBI(sb
)->flag
= flag
;
428 ret
= jfs_mount_rw(sb
, 1);
432 JFS_SBI(sb
)->flag
= flag
;
438 static int jfs_fill_super(struct super_block
*sb
, void *data
, int silent
)
440 struct jfs_sb_info
*sbi
;
444 int flag
, ret
= -EINVAL
;
446 jfs_info("In jfs_read_super: s_flags=0x%lx", sb
->s_flags
);
448 if (!new_valid_dev(sb
->s_bdev
->bd_dev
))
451 sbi
= kzalloc(sizeof (struct jfs_sb_info
), GFP_KERNEL
);
456 sbi
->uid
= sbi
->gid
= sbi
->umask
= -1;
458 /* initialize the mount flag and determine the default error handler */
459 flag
= JFS_ERR_REMOUNT_RO
;
461 if (!parse_options((char *) data
, sb
, &newLVSize
, &flag
))
465 #ifdef CONFIG_JFS_POSIX_ACL
466 sb
->s_flags
|= MS_POSIXACL
;
470 printk(KERN_ERR
"resize option for remount only\n");
475 * Initialize blocksize to 4K.
477 sb_set_blocksize(sb
, PSIZE
);
480 * Set method vectors.
482 sb
->s_op
= &jfs_super_operations
;
483 sb
->s_export_op
= &jfs_export_operations
;
486 * Initialize direct-mapping inode/address-space
488 inode
= new_inode(sb
);
495 inode
->i_size
= sb
->s_bdev
->bd_inode
->i_size
;
496 inode
->i_mapping
->a_ops
= &jfs_metapage_aops
;
497 insert_inode_hash(inode
);
498 mapping_set_gfp_mask(inode
->i_mapping
, GFP_NOFS
);
500 sbi
->direct_inode
= inode
;
505 jfs_err("jfs_mount failed w/return code = %d", rc
);
507 goto out_mount_failed
;
509 if (sb
->s_flags
& MS_RDONLY
)
512 rc
= jfs_mount_rw(sb
, 0);
515 jfs_err("jfs_mount_rw failed, return code = %d",
522 sb
->s_magic
= JFS_SUPER_MAGIC
;
524 inode
= jfs_iget(sb
, ROOT_I
);
526 ret
= PTR_ERR(inode
);
529 sb
->s_root
= d_alloc_root(inode
);
533 if (sbi
->mntflag
& JFS_OS2
)
534 sb
->s_root
->d_op
= &jfs_ci_dentry_operations
;
536 /* logical blocks are represented by 40 bits in pxd_t, etc. */
537 sb
->s_maxbytes
= ((u64
) sb
->s_blocksize
) << 40;
538 #if BITS_PER_LONG == 32
540 * Page cache is indexed by long.
541 * I would use MAX_LFS_FILESIZE, but it's only half as big
543 sb
->s_maxbytes
= min(((u64
) PAGE_CACHE_SIZE
<< 32) - 1, (u64
)sb
->s_maxbytes
);
549 jfs_err("jfs_read_super: get root dentry failed");
555 jfs_err("jfs_umount failed with return code %d", rc
);
558 filemap_write_and_wait(sbi
->direct_inode
->i_mapping
);
559 truncate_inode_pages(sbi
->direct_inode
->i_mapping
, 0);
560 make_bad_inode(sbi
->direct_inode
);
561 iput(sbi
->direct_inode
);
562 sbi
->direct_inode
= NULL
;
565 unload_nls(sbi
->nls_tab
);
571 static int jfs_freeze(struct super_block
*sb
)
573 struct jfs_sb_info
*sbi
= JFS_SBI(sb
);
574 struct jfs_log
*log
= sbi
->log
;
576 if (!(sb
->s_flags
& MS_RDONLY
)) {
579 updateSuper(sb
, FM_CLEAN
);
584 static int jfs_unfreeze(struct super_block
*sb
)
586 struct jfs_sb_info
*sbi
= JFS_SBI(sb
);
587 struct jfs_log
*log
= sbi
->log
;
590 if (!(sb
->s_flags
& MS_RDONLY
)) {
591 updateSuper(sb
, FM_MOUNT
);
592 if ((rc
= lmLogInit(log
)))
593 jfs_err("jfs_unlock failed with return code %d", rc
);
600 static int jfs_get_sb(struct file_system_type
*fs_type
,
601 int flags
, const char *dev_name
, void *data
, struct vfsmount
*mnt
)
603 return get_sb_bdev(fs_type
, flags
, dev_name
, data
, jfs_fill_super
,
607 static int jfs_sync_fs(struct super_block
*sb
, int wait
)
609 struct jfs_log
*log
= JFS_SBI(sb
)->log
;
611 /* log == NULL indicates read-only mount */
613 jfs_flush_journal(log
, wait
);
620 static int jfs_show_options(struct seq_file
*seq
, struct vfsmount
*vfs
)
622 struct jfs_sb_info
*sbi
= JFS_SBI(vfs
->mnt_sb
);
625 seq_printf(seq
, ",uid=%d", sbi
->uid
);
627 seq_printf(seq
, ",gid=%d", sbi
->gid
);
628 if (sbi
->umask
!= -1)
629 seq_printf(seq
, ",umask=%03o", sbi
->umask
);
630 if (sbi
->flag
& JFS_NOINTEGRITY
)
631 seq_puts(seq
, ",nointegrity");
633 seq_printf(seq
, ",iocharset=%s", sbi
->nls_tab
->charset
);
634 if (sbi
->flag
& JFS_ERR_CONTINUE
)
635 seq_printf(seq
, ",errors=continue");
636 if (sbi
->flag
& JFS_ERR_PANIC
)
637 seq_printf(seq
, ",errors=panic");
640 if (sbi
->flag
& JFS_USRQUOTA
)
641 seq_puts(seq
, ",usrquota");
643 if (sbi
->flag
& JFS_GRPQUOTA
)
644 seq_puts(seq
, ",grpquota");
652 /* Read data from quotafile - avoid pagecache and such because we cannot afford
653 * acquiring the locks... As quota files are never truncated and quota code
654 * itself serializes the operations (and noone else should touch the files)
655 * we don't have to be afraid of races */
656 static ssize_t
jfs_quota_read(struct super_block
*sb
, int type
, char *data
,
657 size_t len
, loff_t off
)
659 struct inode
*inode
= sb_dqopt(sb
)->files
[type
];
660 sector_t blk
= off
>> sb
->s_blocksize_bits
;
662 int offset
= off
& (sb
->s_blocksize
- 1);
665 struct buffer_head tmp_bh
;
666 struct buffer_head
*bh
;
667 loff_t i_size
= i_size_read(inode
);
671 if (off
+len
> i_size
)
675 tocopy
= sb
->s_blocksize
- offset
< toread
?
676 sb
->s_blocksize
- offset
: toread
;
679 tmp_bh
.b_size
= 1 << inode
->i_blkbits
;
680 err
= jfs_get_block(inode
, blk
, &tmp_bh
, 0);
683 if (!buffer_mapped(&tmp_bh
)) /* A hole? */
684 memset(data
, 0, tocopy
);
686 bh
= sb_bread(sb
, tmp_bh
.b_blocknr
);
689 memcpy(data
, bh
->b_data
+offset
, tocopy
);
700 /* Write to quotafile */
701 static ssize_t
jfs_quota_write(struct super_block
*sb
, int type
,
702 const char *data
, size_t len
, loff_t off
)
704 struct inode
*inode
= sb_dqopt(sb
)->files
[type
];
705 sector_t blk
= off
>> sb
->s_blocksize_bits
;
707 int offset
= off
& (sb
->s_blocksize
- 1);
709 size_t towrite
= len
;
710 struct buffer_head tmp_bh
;
711 struct buffer_head
*bh
;
713 mutex_lock(&inode
->i_mutex
);
714 while (towrite
> 0) {
715 tocopy
= sb
->s_blocksize
- offset
< towrite
?
716 sb
->s_blocksize
- offset
: towrite
;
719 tmp_bh
.b_size
= 1 << inode
->i_blkbits
;
720 err
= jfs_get_block(inode
, blk
, &tmp_bh
, 1);
723 if (offset
|| tocopy
!= sb
->s_blocksize
)
724 bh
= sb_bread(sb
, tmp_bh
.b_blocknr
);
726 bh
= sb_getblk(sb
, tmp_bh
.b_blocknr
);
732 memcpy(bh
->b_data
+offset
, data
, tocopy
);
733 flush_dcache_page(bh
->b_page
);
734 set_buffer_uptodate(bh
);
735 mark_buffer_dirty(bh
);
744 if (len
== towrite
) {
745 mutex_unlock(&inode
->i_mutex
);
748 if (inode
->i_size
< off
+len
-towrite
)
749 i_size_write(inode
, off
+len
-towrite
);
751 inode
->i_mtime
= inode
->i_ctime
= CURRENT_TIME
;
752 mark_inode_dirty(inode
);
753 mutex_unlock(&inode
->i_mutex
);
754 return len
- towrite
;
759 static const struct super_operations jfs_super_operations
= {
760 .alloc_inode
= jfs_alloc_inode
,
761 .destroy_inode
= jfs_destroy_inode
,
762 .dirty_inode
= jfs_dirty_inode
,
763 .write_inode
= jfs_write_inode
,
764 .delete_inode
= jfs_delete_inode
,
765 .clear_inode
= jfs_clear_inode
,
766 .put_super
= jfs_put_super
,
767 .sync_fs
= jfs_sync_fs
,
768 .freeze_fs
= jfs_freeze
,
769 .unfreeze_fs
= jfs_unfreeze
,
770 .statfs
= jfs_statfs
,
771 .remount_fs
= jfs_remount
,
772 .show_options
= jfs_show_options
,
774 .quota_read
= jfs_quota_read
,
775 .quota_write
= jfs_quota_write
,
779 static const struct export_operations jfs_export_operations
= {
780 .fh_to_dentry
= jfs_fh_to_dentry
,
781 .fh_to_parent
= jfs_fh_to_parent
,
782 .get_parent
= jfs_get_parent
,
785 static struct file_system_type jfs_fs_type
= {
786 .owner
= THIS_MODULE
,
788 .get_sb
= jfs_get_sb
,
789 .kill_sb
= kill_block_super
,
790 .fs_flags
= FS_REQUIRES_DEV
,
793 static void init_once(void *foo
)
795 struct jfs_inode_info
*jfs_ip
= (struct jfs_inode_info
*) foo
;
797 memset(jfs_ip
, 0, sizeof(struct jfs_inode_info
));
798 INIT_LIST_HEAD(&jfs_ip
->anon_inode_list
);
799 init_rwsem(&jfs_ip
->rdwrlock
);
800 mutex_init(&jfs_ip
->commit_mutex
);
801 init_rwsem(&jfs_ip
->xattr_sem
);
802 spin_lock_init(&jfs_ip
->ag_lock
);
803 jfs_ip
->active_ag
= -1;
804 inode_init_once(&jfs_ip
->vfs_inode
);
807 static int __init
init_jfs_fs(void)
813 kmem_cache_create("jfs_ip", sizeof(struct jfs_inode_info
), 0,
814 SLAB_RECLAIM_ACCOUNT
|SLAB_MEM_SPREAD
,
816 if (jfs_inode_cachep
== NULL
)
820 * Metapage initialization
822 rc
= metapage_init();
824 jfs_err("metapage_init failed w/rc = %d", rc
);
829 * Transaction Manager initialization
833 jfs_err("txInit failed w/rc = %d", rc
);
838 * I/O completion thread (endio)
840 jfsIOthread
= kthread_run(jfsIOWait
, NULL
, "jfsIO");
841 if (IS_ERR(jfsIOthread
)) {
842 rc
= PTR_ERR(jfsIOthread
);
843 jfs_err("init_jfs_fs: fork failed w/rc = %d", rc
);
847 if (commit_threads
< 1)
848 commit_threads
= num_online_cpus();
849 if (commit_threads
> MAX_COMMIT_THREADS
)
850 commit_threads
= MAX_COMMIT_THREADS
;
852 for (i
= 0; i
< commit_threads
; i
++) {
853 jfsCommitThread
[i
] = kthread_run(jfs_lazycommit
, NULL
, "jfsCommit");
854 if (IS_ERR(jfsCommitThread
[i
])) {
855 rc
= PTR_ERR(jfsCommitThread
[i
]);
856 jfs_err("init_jfs_fs: fork failed w/rc = %d", rc
);
858 goto kill_committask
;
862 jfsSyncThread
= kthread_run(jfs_sync
, NULL
, "jfsSync");
863 if (IS_ERR(jfsSyncThread
)) {
864 rc
= PTR_ERR(jfsSyncThread
);
865 jfs_err("init_jfs_fs: fork failed w/rc = %d", rc
);
866 goto kill_committask
;
873 return register_filesystem(&jfs_fs_type
);
876 for (i
= 0; i
< commit_threads
; i
++)
877 kthread_stop(jfsCommitThread
[i
]);
878 kthread_stop(jfsIOthread
);
884 kmem_cache_destroy(jfs_inode_cachep
);
888 static void __exit
exit_jfs_fs(void)
892 jfs_info("exit_jfs_fs called");
897 kthread_stop(jfsIOthread
);
898 for (i
= 0; i
< commit_threads
; i
++)
899 kthread_stop(jfsCommitThread
[i
]);
900 kthread_stop(jfsSyncThread
);
904 unregister_filesystem(&jfs_fs_type
);
905 kmem_cache_destroy(jfs_inode_cachep
);
908 module_init(init_jfs_fs
)
909 module_exit(exit_jfs_fs
)