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 <asm/uaccess.h>
34 #include <linux/seq_file.h>
35 #include <linux/smp_lock.h>
37 #include "jfs_incore.h"
38 #include "jfs_filsys.h"
39 #include "jfs_inode.h"
40 #include "jfs_metapage.h"
41 #include "jfs_superblock.h"
45 #include "jfs_debug.h"
47 MODULE_DESCRIPTION("The Journaled Filesystem (JFS)");
48 MODULE_AUTHOR("Steve Best/Dave Kleikamp/Barry Arndt, IBM");
49 MODULE_LICENSE("GPL");
51 static struct kmem_cache
* jfs_inode_cachep
;
53 static const struct super_operations jfs_super_operations
;
54 static const struct export_operations jfs_export_operations
;
55 static struct file_system_type jfs_fs_type
;
57 #define MAX_COMMIT_THREADS 64
58 static int commit_threads
= 0;
59 module_param(commit_threads
, int, 0);
60 MODULE_PARM_DESC(commit_threads
, "Number of commit threads");
62 static struct task_struct
*jfsCommitThread
[MAX_COMMIT_THREADS
];
63 struct task_struct
*jfsIOthread
;
64 struct task_struct
*jfsSyncThread
;
66 #ifdef CONFIG_JFS_DEBUG
67 int jfsloglevel
= JFS_LOGLEVEL_WARN
;
68 module_param(jfsloglevel
, int, 0644);
69 MODULE_PARM_DESC(jfsloglevel
, "Specify JFS loglevel (0, 1 or 2)");
72 static void jfs_handle_error(struct super_block
*sb
)
74 struct jfs_sb_info
*sbi
= JFS_SBI(sb
);
76 if (sb
->s_flags
& MS_RDONLY
)
79 updateSuper(sb
, FM_DIRTY
);
81 if (sbi
->flag
& JFS_ERR_PANIC
)
82 panic("JFS (device %s): panic forced after error\n",
84 else if (sbi
->flag
& JFS_ERR_REMOUNT_RO
) {
85 jfs_err("ERROR: (device %s): remounting filesystem "
88 sb
->s_flags
|= MS_RDONLY
;
91 /* nothing is done for continue beyond marking the superblock dirty */
94 void jfs_error(struct super_block
*sb
, const char * function
, ...)
96 static char error_buf
[256];
99 va_start(args
, function
);
100 vsnprintf(error_buf
, sizeof(error_buf
), function
, args
);
103 printk(KERN_ERR
"ERROR: (device %s): %s\n", sb
->s_id
, error_buf
);
105 jfs_handle_error(sb
);
108 static struct inode
*jfs_alloc_inode(struct super_block
*sb
)
110 struct jfs_inode_info
*jfs_inode
;
112 jfs_inode
= kmem_cache_alloc(jfs_inode_cachep
, GFP_NOFS
);
115 return &jfs_inode
->vfs_inode
;
118 static void jfs_destroy_inode(struct inode
*inode
)
120 struct jfs_inode_info
*ji
= JFS_IP(inode
);
122 BUG_ON(!list_empty(&ji
->anon_inode_list
));
124 spin_lock_irq(&ji
->ag_lock
);
125 if (ji
->active_ag
!= -1) {
126 struct bmap
*bmap
= JFS_SBI(inode
->i_sb
)->bmap
;
127 atomic_dec(&bmap
->db_active
[ji
->active_ag
]);
130 spin_unlock_irq(&ji
->ag_lock
);
132 #ifdef CONFIG_JFS_POSIX_ACL
133 if (ji
->i_acl
!= JFS_ACL_NOT_CACHED
) {
134 posix_acl_release(ji
->i_acl
);
135 ji
->i_acl
= JFS_ACL_NOT_CACHED
;
137 if (ji
->i_default_acl
!= JFS_ACL_NOT_CACHED
) {
138 posix_acl_release(ji
->i_default_acl
);
139 ji
->i_default_acl
= JFS_ACL_NOT_CACHED
;
143 kmem_cache_free(jfs_inode_cachep
, ji
);
146 static int jfs_statfs(struct dentry
*dentry
, struct kstatfs
*buf
)
148 struct jfs_sb_info
*sbi
= JFS_SBI(dentry
->d_sb
);
150 struct inomap
*imap
= JFS_IP(sbi
->ipimap
)->i_imap
;
152 jfs_info("In jfs_statfs");
153 buf
->f_type
= JFS_SUPER_MAGIC
;
154 buf
->f_bsize
= sbi
->bsize
;
155 buf
->f_blocks
= sbi
->bmap
->db_mapsize
;
156 buf
->f_bfree
= sbi
->bmap
->db_nfree
;
157 buf
->f_bavail
= sbi
->bmap
->db_nfree
;
159 * If we really return the number of allocated & free inodes, some
160 * applications will fail because they won't see enough free inodes.
161 * We'll try to calculate some guess as to how may inodes we can
164 * buf->f_files = atomic_read(&imap->im_numinos);
165 * buf->f_ffree = atomic_read(&imap->im_numfree);
167 maxinodes
= min((s64
) atomic_read(&imap
->im_numinos
) +
168 ((sbi
->bmap
->db_nfree
>> imap
->im_l2nbperiext
)
169 << L2INOSPEREXT
), (s64
) 0xffffffffLL
);
170 buf
->f_files
= maxinodes
;
171 buf
->f_ffree
= maxinodes
- (atomic_read(&imap
->im_numinos
) -
172 atomic_read(&imap
->im_numfree
));
173 buf
->f_fsid
.val
[0] = (u32
)crc32_le(0, sbi
->uuid
, sizeof(sbi
->uuid
)/2);
174 buf
->f_fsid
.val
[1] = (u32
)crc32_le(0, sbi
->uuid
+ sizeof(sbi
->uuid
)/2,
175 sizeof(sbi
->uuid
)/2);
177 buf
->f_namelen
= JFS_NAME_MAX
;
181 static void jfs_put_super(struct super_block
*sb
)
183 struct jfs_sb_info
*sbi
= JFS_SBI(sb
);
186 jfs_info("In jfs_put_super");
192 jfs_err("jfs_umount failed with return code %d", rc
);
194 unload_nls(sbi
->nls_tab
);
197 truncate_inode_pages(sbi
->direct_inode
->i_mapping
, 0);
198 iput(sbi
->direct_inode
);
199 sbi
->direct_inode
= NULL
;
207 Opt_integrity
, Opt_nointegrity
, Opt_iocharset
, Opt_resize
,
208 Opt_resize_nosize
, Opt_errors
, Opt_ignore
, Opt_err
, Opt_quota
,
209 Opt_usrquota
, Opt_grpquota
, Opt_uid
, Opt_gid
, Opt_umask
212 static const match_table_t tokens
= {
213 {Opt_integrity
, "integrity"},
214 {Opt_nointegrity
, "nointegrity"},
215 {Opt_iocharset
, "iocharset=%s"},
216 {Opt_resize
, "resize=%u"},
217 {Opt_resize_nosize
, "resize"},
218 {Opt_errors
, "errors=%s"},
219 {Opt_ignore
, "noquota"},
220 {Opt_ignore
, "quota"},
221 {Opt_usrquota
, "usrquota"},
222 {Opt_grpquota
, "grpquota"},
225 {Opt_umask
, "umask=%u"},
229 static int parse_options(char *options
, struct super_block
*sb
, s64
*newLVSize
,
232 void *nls_map
= (void *)-1; /* -1: no change; NULL: none */
234 struct jfs_sb_info
*sbi
= JFS_SBI(sb
);
241 while ((p
= strsep(&options
, ",")) != NULL
) {
242 substring_t args
[MAX_OPT_ARGS
];
247 token
= match_token(p
, tokens
, args
);
250 *flag
&= ~JFS_NOINTEGRITY
;
252 case Opt_nointegrity
:
253 *flag
|= JFS_NOINTEGRITY
;
256 /* Silently ignore the quota options */
257 /* Don't do anything ;-) */
260 if (nls_map
&& nls_map
!= (void *) -1)
262 if (!strcmp(args
[0].from
, "none"))
265 nls_map
= load_nls(args
[0].from
);
268 "JFS: charset not found\n");
275 char *resize
= args
[0].from
;
276 *newLVSize
= simple_strtoull(resize
, &resize
, 0);
279 case Opt_resize_nosize
:
281 *newLVSize
= sb
->s_bdev
->bd_inode
->i_size
>>
282 sb
->s_blocksize_bits
;
285 "JFS: Cannot determine volume size\n");
290 char *errors
= args
[0].from
;
291 if (!errors
|| !*errors
)
293 if (!strcmp(errors
, "continue")) {
294 *flag
&= ~JFS_ERR_REMOUNT_RO
;
295 *flag
&= ~JFS_ERR_PANIC
;
296 *flag
|= JFS_ERR_CONTINUE
;
297 } else if (!strcmp(errors
, "remount-ro")) {
298 *flag
&= ~JFS_ERR_CONTINUE
;
299 *flag
&= ~JFS_ERR_PANIC
;
300 *flag
|= JFS_ERR_REMOUNT_RO
;
301 } else if (!strcmp(errors
, "panic")) {
302 *flag
&= ~JFS_ERR_CONTINUE
;
303 *flag
&= ~JFS_ERR_REMOUNT_RO
;
304 *flag
|= JFS_ERR_PANIC
;
307 "JFS: %s is an invalid error handler\n",
317 *flag
|= JFS_USRQUOTA
;
320 *flag
|= JFS_GRPQUOTA
;
327 "JFS: quota operations not supported\n");
332 char *uid
= args
[0].from
;
333 sbi
->uid
= simple_strtoul(uid
, &uid
, 0);
338 char *gid
= args
[0].from
;
339 sbi
->gid
= simple_strtoul(gid
, &gid
, 0);
344 char *umask
= args
[0].from
;
345 sbi
->umask
= simple_strtoul(umask
, &umask
, 8);
346 if (sbi
->umask
& ~0777) {
348 "JFS: Invalid value of umask\n");
354 printk("jfs: Unrecognized mount option \"%s\" "
355 " or missing value\n", p
);
360 if (nls_map
!= (void *) -1) {
361 /* Discard old (if remount) */
363 unload_nls(sbi
->nls_tab
);
364 sbi
->nls_tab
= nls_map
;
369 if (nls_map
&& nls_map
!= (void *) -1)
374 static int jfs_remount(struct super_block
*sb
, int *flags
, char *data
)
378 int flag
= JFS_SBI(sb
)->flag
;
381 if (!parse_options(data
, sb
, &newLVSize
, &flag
)) {
386 if (sb
->s_flags
& MS_RDONLY
) {
388 "JFS: resize requires volume to be mounted read-write\n");
392 rc
= jfs_extendfs(sb
, newLVSize
, 0);
399 if ((sb
->s_flags
& MS_RDONLY
) && !(*flags
& MS_RDONLY
)) {
401 * Invalidate any previously read metadata. fsck may have
402 * changed the on-disk data since we mounted r/o
404 truncate_inode_pages(JFS_SBI(sb
)->direct_inode
->i_mapping
, 0);
406 JFS_SBI(sb
)->flag
= flag
;
407 ret
= jfs_mount_rw(sb
, 1);
411 if ((!(sb
->s_flags
& MS_RDONLY
)) && (*flags
& MS_RDONLY
)) {
412 rc
= jfs_umount_rw(sb
);
413 JFS_SBI(sb
)->flag
= flag
;
417 if ((JFS_SBI(sb
)->flag
& JFS_NOINTEGRITY
) != (flag
& JFS_NOINTEGRITY
))
418 if (!(sb
->s_flags
& MS_RDONLY
)) {
419 rc
= jfs_umount_rw(sb
);
424 JFS_SBI(sb
)->flag
= flag
;
425 ret
= jfs_mount_rw(sb
, 1);
429 JFS_SBI(sb
)->flag
= flag
;
435 static int jfs_fill_super(struct super_block
*sb
, void *data
, int silent
)
437 struct jfs_sb_info
*sbi
;
441 int flag
, ret
= -EINVAL
;
443 jfs_info("In jfs_read_super: s_flags=0x%lx", sb
->s_flags
);
445 if (!new_valid_dev(sb
->s_bdev
->bd_dev
))
448 sbi
= kzalloc(sizeof (struct jfs_sb_info
), GFP_KERNEL
);
453 sbi
->uid
= sbi
->gid
= sbi
->umask
= -1;
455 /* initialize the mount flag and determine the default error handler */
456 flag
= JFS_ERR_REMOUNT_RO
;
458 if (!parse_options((char *) data
, sb
, &newLVSize
, &flag
)) {
464 #ifdef CONFIG_JFS_POSIX_ACL
465 sb
->s_flags
|= MS_POSIXACL
;
469 printk(KERN_ERR
"resize option for remount only\n");
474 * Initialize blocksize to 4K.
476 sb_set_blocksize(sb
, PSIZE
);
479 * Set method vectors.
481 sb
->s_op
= &jfs_super_operations
;
482 sb
->s_export_op
= &jfs_export_operations
;
485 * Initialize direct-mapping inode/address-space
487 inode
= new_inode(sb
);
494 inode
->i_size
= sb
->s_bdev
->bd_inode
->i_size
;
495 inode
->i_mapping
->a_ops
= &jfs_metapage_aops
;
496 insert_inode_hash(inode
);
497 mapping_set_gfp_mask(inode
->i_mapping
, GFP_NOFS
);
499 sbi
->direct_inode
= inode
;
504 jfs_err("jfs_mount failed w/return code = %d", rc
);
506 goto out_mount_failed
;
508 if (sb
->s_flags
& MS_RDONLY
)
511 rc
= jfs_mount_rw(sb
, 0);
514 jfs_err("jfs_mount_rw failed, return code = %d",
521 sb
->s_magic
= JFS_SUPER_MAGIC
;
523 inode
= jfs_iget(sb
, ROOT_I
);
525 ret
= PTR_ERR(inode
);
528 sb
->s_root
= d_alloc_root(inode
);
532 if (sbi
->mntflag
& JFS_OS2
)
533 sb
->s_root
->d_op
= &jfs_ci_dentry_operations
;
535 /* logical blocks are represented by 40 bits in pxd_t, etc. */
536 sb
->s_maxbytes
= ((u64
) sb
->s_blocksize
) << 40;
537 #if BITS_PER_LONG == 32
539 * Page cache is indexed by long.
540 * I would use MAX_LFS_FILESIZE, but it's only half as big
542 sb
->s_maxbytes
= min(((u64
) PAGE_CACHE_SIZE
<< 32) - 1, sb
->s_maxbytes
);
548 jfs_err("jfs_read_super: get root dentry failed");
554 jfs_err("jfs_umount failed with return code %d", rc
);
557 filemap_write_and_wait(sbi
->direct_inode
->i_mapping
);
558 truncate_inode_pages(sbi
->direct_inode
->i_mapping
, 0);
559 make_bad_inode(sbi
->direct_inode
);
560 iput(sbi
->direct_inode
);
561 sbi
->direct_inode
= NULL
;
564 unload_nls(sbi
->nls_tab
);
569 static int jfs_freeze(struct super_block
*sb
)
571 struct jfs_sb_info
*sbi
= JFS_SBI(sb
);
572 struct jfs_log
*log
= sbi
->log
;
574 if (!(sb
->s_flags
& MS_RDONLY
)) {
577 updateSuper(sb
, FM_CLEAN
);
582 static int jfs_unfreeze(struct super_block
*sb
)
584 struct jfs_sb_info
*sbi
= JFS_SBI(sb
);
585 struct jfs_log
*log
= sbi
->log
;
588 if (!(sb
->s_flags
& MS_RDONLY
)) {
589 updateSuper(sb
, FM_MOUNT
);
590 if ((rc
= lmLogInit(log
)))
591 jfs_err("jfs_unlock failed with return code %d", rc
);
598 static int jfs_get_sb(struct file_system_type
*fs_type
,
599 int flags
, const char *dev_name
, void *data
, struct vfsmount
*mnt
)
601 return get_sb_bdev(fs_type
, flags
, dev_name
, data
, jfs_fill_super
,
605 static int jfs_sync_fs(struct super_block
*sb
, int wait
)
607 struct jfs_log
*log
= JFS_SBI(sb
)->log
;
609 /* log == NULL indicates read-only mount */
611 jfs_flush_journal(log
, wait
);
618 static int jfs_show_options(struct seq_file
*seq
, struct vfsmount
*vfs
)
620 struct jfs_sb_info
*sbi
= JFS_SBI(vfs
->mnt_sb
);
623 seq_printf(seq
, ",uid=%d", sbi
->uid
);
625 seq_printf(seq
, ",gid=%d", sbi
->gid
);
626 if (sbi
->umask
!= -1)
627 seq_printf(seq
, ",umask=%03o", sbi
->umask
);
628 if (sbi
->flag
& JFS_NOINTEGRITY
)
629 seq_puts(seq
, ",nointegrity");
631 seq_printf(seq
, ",iocharset=%s", sbi
->nls_tab
->charset
);
632 if (sbi
->flag
& JFS_ERR_CONTINUE
)
633 seq_printf(seq
, ",errors=continue");
634 if (sbi
->flag
& JFS_ERR_PANIC
)
635 seq_printf(seq
, ",errors=panic");
638 if (sbi
->flag
& JFS_USRQUOTA
)
639 seq_puts(seq
, ",usrquota");
641 if (sbi
->flag
& JFS_GRPQUOTA
)
642 seq_puts(seq
, ",grpquota");
650 /* Read data from quotafile - avoid pagecache and such because we cannot afford
651 * acquiring the locks... As quota files are never truncated and quota code
652 * itself serializes the operations (and noone else should touch the files)
653 * we don't have to be afraid of races */
654 static ssize_t
jfs_quota_read(struct super_block
*sb
, int type
, char *data
,
655 size_t len
, loff_t off
)
657 struct inode
*inode
= sb_dqopt(sb
)->files
[type
];
658 sector_t blk
= off
>> sb
->s_blocksize_bits
;
660 int offset
= off
& (sb
->s_blocksize
- 1);
663 struct buffer_head tmp_bh
;
664 struct buffer_head
*bh
;
665 loff_t i_size
= i_size_read(inode
);
669 if (off
+len
> i_size
)
673 tocopy
= sb
->s_blocksize
- offset
< toread
?
674 sb
->s_blocksize
- offset
: toread
;
677 tmp_bh
.b_size
= 1 << inode
->i_blkbits
;
678 err
= jfs_get_block(inode
, blk
, &tmp_bh
, 0);
681 if (!buffer_mapped(&tmp_bh
)) /* A hole? */
682 memset(data
, 0, tocopy
);
684 bh
= sb_bread(sb
, tmp_bh
.b_blocknr
);
687 memcpy(data
, bh
->b_data
+offset
, tocopy
);
698 /* Write to quotafile */
699 static ssize_t
jfs_quota_write(struct super_block
*sb
, int type
,
700 const char *data
, size_t len
, loff_t off
)
702 struct inode
*inode
= sb_dqopt(sb
)->files
[type
];
703 sector_t blk
= off
>> sb
->s_blocksize_bits
;
705 int offset
= off
& (sb
->s_blocksize
- 1);
707 size_t towrite
= len
;
708 struct buffer_head tmp_bh
;
709 struct buffer_head
*bh
;
711 mutex_lock(&inode
->i_mutex
);
712 while (towrite
> 0) {
713 tocopy
= sb
->s_blocksize
- offset
< towrite
?
714 sb
->s_blocksize
- offset
: towrite
;
717 tmp_bh
.b_size
= 1 << inode
->i_blkbits
;
718 err
= jfs_get_block(inode
, blk
, &tmp_bh
, 1);
721 if (offset
|| tocopy
!= sb
->s_blocksize
)
722 bh
= sb_bread(sb
, tmp_bh
.b_blocknr
);
724 bh
= sb_getblk(sb
, tmp_bh
.b_blocknr
);
730 memcpy(bh
->b_data
+offset
, data
, tocopy
);
731 flush_dcache_page(bh
->b_page
);
732 set_buffer_uptodate(bh
);
733 mark_buffer_dirty(bh
);
742 if (len
== towrite
) {
743 mutex_unlock(&inode
->i_mutex
);
746 if (inode
->i_size
< off
+len
-towrite
)
747 i_size_write(inode
, off
+len
-towrite
);
749 inode
->i_mtime
= inode
->i_ctime
= CURRENT_TIME
;
750 mark_inode_dirty(inode
);
751 mutex_unlock(&inode
->i_mutex
);
752 return len
- towrite
;
757 static const struct super_operations jfs_super_operations
= {
758 .alloc_inode
= jfs_alloc_inode
,
759 .destroy_inode
= jfs_destroy_inode
,
760 .dirty_inode
= jfs_dirty_inode
,
761 .write_inode
= jfs_write_inode
,
762 .delete_inode
= jfs_delete_inode
,
763 .put_super
= jfs_put_super
,
764 .sync_fs
= jfs_sync_fs
,
765 .freeze_fs
= jfs_freeze
,
766 .unfreeze_fs
= jfs_unfreeze
,
767 .statfs
= jfs_statfs
,
768 .remount_fs
= jfs_remount
,
769 .show_options
= jfs_show_options
,
771 .quota_read
= jfs_quota_read
,
772 .quota_write
= jfs_quota_write
,
776 static const struct export_operations jfs_export_operations
= {
777 .fh_to_dentry
= jfs_fh_to_dentry
,
778 .fh_to_parent
= jfs_fh_to_parent
,
779 .get_parent
= jfs_get_parent
,
782 static struct file_system_type jfs_fs_type
= {
783 .owner
= THIS_MODULE
,
785 .get_sb
= jfs_get_sb
,
786 .kill_sb
= kill_block_super
,
787 .fs_flags
= FS_REQUIRES_DEV
,
790 static void init_once(void *foo
)
792 struct jfs_inode_info
*jfs_ip
= (struct jfs_inode_info
*) foo
;
794 memset(jfs_ip
, 0, sizeof(struct jfs_inode_info
));
795 INIT_LIST_HEAD(&jfs_ip
->anon_inode_list
);
796 init_rwsem(&jfs_ip
->rdwrlock
);
797 mutex_init(&jfs_ip
->commit_mutex
);
798 init_rwsem(&jfs_ip
->xattr_sem
);
799 spin_lock_init(&jfs_ip
->ag_lock
);
800 jfs_ip
->active_ag
= -1;
801 #ifdef CONFIG_JFS_POSIX_ACL
802 jfs_ip
->i_acl
= JFS_ACL_NOT_CACHED
;
803 jfs_ip
->i_default_acl
= JFS_ACL_NOT_CACHED
;
805 inode_init_once(&jfs_ip
->vfs_inode
);
808 static int __init
init_jfs_fs(void)
814 kmem_cache_create("jfs_ip", sizeof(struct jfs_inode_info
), 0,
815 SLAB_RECLAIM_ACCOUNT
|SLAB_MEM_SPREAD
,
817 if (jfs_inode_cachep
== NULL
)
821 * Metapage initialization
823 rc
= metapage_init();
825 jfs_err("metapage_init failed w/rc = %d", rc
);
830 * Transaction Manager initialization
834 jfs_err("txInit failed w/rc = %d", rc
);
839 * I/O completion thread (endio)
841 jfsIOthread
= kthread_run(jfsIOWait
, NULL
, "jfsIO");
842 if (IS_ERR(jfsIOthread
)) {
843 rc
= PTR_ERR(jfsIOthread
);
844 jfs_err("init_jfs_fs: fork failed w/rc = %d", rc
);
848 if (commit_threads
< 1)
849 commit_threads
= num_online_cpus();
850 if (commit_threads
> MAX_COMMIT_THREADS
)
851 commit_threads
= MAX_COMMIT_THREADS
;
853 for (i
= 0; i
< commit_threads
; i
++) {
854 jfsCommitThread
[i
] = kthread_run(jfs_lazycommit
, NULL
, "jfsCommit");
855 if (IS_ERR(jfsCommitThread
[i
])) {
856 rc
= PTR_ERR(jfsCommitThread
[i
]);
857 jfs_err("init_jfs_fs: fork failed w/rc = %d", rc
);
859 goto kill_committask
;
863 jfsSyncThread
= kthread_run(jfs_sync
, NULL
, "jfsSync");
864 if (IS_ERR(jfsSyncThread
)) {
865 rc
= PTR_ERR(jfsSyncThread
);
866 jfs_err("init_jfs_fs: fork failed w/rc = %d", rc
);
867 goto kill_committask
;
874 return register_filesystem(&jfs_fs_type
);
877 for (i
= 0; i
< commit_threads
; i
++)
878 kthread_stop(jfsCommitThread
[i
]);
879 kthread_stop(jfsIOthread
);
885 kmem_cache_destroy(jfs_inode_cachep
);
889 static void __exit
exit_jfs_fs(void)
893 jfs_info("exit_jfs_fs called");
898 kthread_stop(jfsIOthread
);
899 for (i
= 0; i
< commit_threads
; i
++)
900 kthread_stop(jfsCommitThread
[i
]);
901 kthread_stop(jfsSyncThread
);
905 unregister_filesystem(&jfs_fs_type
);
906 kmem_cache_destroy(jfs_inode_cachep
);
909 module_init(init_jfs_fs
)
910 module_exit(exit_jfs_fs
)