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 <linux/uaccess.h>
35 #include <linux/seq_file.h>
36 #include <linux/blkdev.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"
47 #include "jfs_xattr.h"
48 #include "jfs_dinode.h"
50 MODULE_DESCRIPTION("The Journaled Filesystem (JFS)");
51 MODULE_AUTHOR("Steve Best/Dave Kleikamp/Barry Arndt, IBM");
52 MODULE_LICENSE("GPL");
54 static struct kmem_cache *jfs_inode_cachep;
56 static const struct super_operations jfs_super_operations;
57 static const struct export_operations jfs_export_operations;
58 static struct file_system_type jfs_fs_type;
60 #define MAX_COMMIT_THREADS 64
61 static int commit_threads;
62 module_param(commit_threads, int, 0);
63 MODULE_PARM_DESC(commit_threads, "Number of commit threads");
65 static struct task_struct *jfsCommitThread[MAX_COMMIT_THREADS];
66 struct task_struct *jfsIOthread;
67 struct task_struct *jfsSyncThread;
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)");
75 static void jfs_handle_error(struct super_block *sb)
77 struct jfs_sb_info *sbi = JFS_SBI(sb);
82 updateSuper(sb, FM_DIRTY);
84 if (sbi->flag & JFS_ERR_PANIC)
85 panic("JFS (device %s): panic forced after error\n",
87 else if (sbi->flag & JFS_ERR_REMOUNT_RO) {
88 jfs_err("ERROR: (device %s): remounting filesystem as read-only",
90 sb->s_flags |= SB_RDONLY;
93 /* nothing is done for continue beyond marking the superblock dirty */
96 void jfs_error(struct super_block *sb, const char *fmt, ...)
106 pr_err("ERROR: (device %s): %ps: %pV\n",
107 sb->s_id, __builtin_return_address(0), &vaf);
111 jfs_handle_error(sb);
114 static struct inode *jfs_alloc_inode(struct super_block *sb)
116 struct jfs_inode_info *jfs_inode;
118 jfs_inode = kmem_cache_alloc(jfs_inode_cachep, GFP_NOFS);
122 memset(&jfs_inode->i_dquot, 0, sizeof(jfs_inode->i_dquot));
124 return &jfs_inode->vfs_inode;
127 static void jfs_free_inode(struct inode *inode)
129 kmem_cache_free(jfs_inode_cachep, JFS_IP(inode));
132 static int jfs_statfs(struct dentry *dentry, struct kstatfs *buf)
134 struct jfs_sb_info *sbi = JFS_SBI(dentry->d_sb);
136 struct inomap *imap = JFS_IP(sbi->ipimap)->i_imap;
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;
145 * If we really return the number of allocated & free inodes, some
146 * applications will fail because they won't see enough free inodes.
147 * We'll try to calculate some guess as to how many inodes we can
150 * buf->f_files = atomic_read(&imap->im_numinos);
151 * buf->f_ffree = atomic_read(&imap->im_numfree);
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));
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);
165 buf->f_namelen = JFS_NAME_MAX;
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);
174 static void jfs_quota_off_umount(struct super_block *sb)
178 for (type = 0; type < MAXQUOTAS; type++)
179 jfs_quota_off(sb, type);
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,
193 static inline void jfs_quota_off_umount(struct super_block *sb)
198 static void jfs_put_super(struct super_block *sb)
200 struct jfs_sb_info *sbi = JFS_SBI(sb);
203 jfs_info("In jfs_put_super");
205 jfs_quota_off_umount(sb);
209 jfs_err("jfs_umount failed with return code %d", rc);
211 unload_nls(sbi->nls_tab);
213 truncate_inode_pages(sbi->direct_inode->i_mapping, 0);
214 iput(sbi->direct_inode);
220 Opt_integrity, Opt_nointegrity, Opt_iocharset, Opt_resize,
221 Opt_resize_nosize, Opt_errors, Opt_ignore, Opt_err, Opt_quota,
222 Opt_usrquota, Opt_grpquota, Opt_uid, Opt_gid, Opt_umask,
223 Opt_discard, Opt_nodiscard, Opt_discard_minblk
226 static const match_table_t tokens = {
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"},
234 {Opt_quota, "quota"},
235 {Opt_usrquota, "usrquota"},
236 {Opt_grpquota, "grpquota"},
239 {Opt_umask, "umask=%u"},
240 {Opt_discard, "discard"},
241 {Opt_nodiscard, "nodiscard"},
242 {Opt_discard_minblk, "discard=%u"},
246 static int parse_options(char *options, struct super_block *sb, s64 *newLVSize,
249 void *nls_map = (void *)-1; /* -1: no change; NULL: none */
251 struct jfs_sb_info *sbi = JFS_SBI(sb);
258 while ((p = strsep(&options, ",")) != NULL) {
259 substring_t args[MAX_OPT_ARGS];
264 token = match_token(p, tokens, args);
267 *flag &= ~JFS_NOINTEGRITY;
269 case Opt_nointegrity:
270 *flag |= JFS_NOINTEGRITY;
273 /* Silently ignore the quota options */
274 /* Don't do anything ;-) */
277 if (nls_map && nls_map != (void *) -1)
279 if (!strcmp(args[0].from, "none"))
282 nls_map = load_nls(args[0].from);
284 pr_err("JFS: charset not found\n");
291 char *resize = args[0].from;
292 int rc = kstrtoll(resize, 0, newLVSize);
298 case Opt_resize_nosize:
300 *newLVSize = i_size_read(sb->s_bdev->bd_inode) >>
301 sb->s_blocksize_bits;
303 pr_err("JFS: Cannot determine volume size\n");
308 char *errors = args[0].from;
309 if (!errors || !*errors)
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;
324 pr_err("JFS: %s is an invalid error handler\n",
334 *flag |= JFS_USRQUOTA;
337 *flag |= JFS_GRPQUOTA;
343 pr_err("JFS: quota operations not supported\n");
348 char *uid = args[0].from;
350 int rc = kstrtouint(uid, 0, &val);
354 sbi->uid = make_kuid(current_user_ns(), val);
355 if (!uid_valid(sbi->uid))
362 char *gid = args[0].from;
364 int rc = kstrtouint(gid, 0, &val);
368 sbi->gid = make_kgid(current_user_ns(), val);
369 if (!gid_valid(sbi->gid))
376 char *umask = args[0].from;
377 int rc = kstrtouint(umask, 8, &sbi->umask);
381 if (sbi->umask & ~0777) {
382 pr_err("JFS: Invalid value of umask\n");
390 struct request_queue *q = bdev_get_queue(sb->s_bdev);
391 /* if set to 1, even copying files will cause
393 * -> user has more control over the online trimming
395 sbi->minblks_trim = 64;
396 if (blk_queue_discard(q))
397 *flag |= JFS_DISCARD;
399 pr_err("JFS: discard option not supported on device\n");
404 *flag &= ~JFS_DISCARD;
407 case Opt_discard_minblk:
409 struct request_queue *q = bdev_get_queue(sb->s_bdev);
410 char *minblks_trim = args[0].from;
412 if (blk_queue_discard(q)) {
413 *flag |= JFS_DISCARD;
414 rc = kstrtouint(minblks_trim, 0,
419 pr_err("JFS: discard option not supported on device\n");
424 printk("jfs: Unrecognized mount option \"%s\" or missing value\n",
430 if (nls_map != (void *) -1) {
431 /* Discard old (if remount) */
432 unload_nls(sbi->nls_tab);
433 sbi->nls_tab = nls_map;
438 if (nls_map && nls_map != (void *) -1)
443 static int jfs_remount(struct super_block *sb, int *flags, char *data)
447 int flag = JFS_SBI(sb)->flag;
451 if (!parse_options(data, sb, &newLVSize, &flag))
456 pr_err("JFS: resize requires volume to be mounted read-write\n");
459 rc = jfs_extendfs(sb, newLVSize, 0);
464 if (sb_rdonly(sb) && !(*flags & SB_RDONLY)) {
466 * Invalidate any previously read metadata. fsck may have
467 * changed the on-disk data since we mounted r/o
469 truncate_inode_pages(JFS_SBI(sb)->direct_inode->i_mapping, 0);
471 JFS_SBI(sb)->flag = flag;
472 ret = jfs_mount_rw(sb, 1);
474 /* mark the fs r/w for quota activity */
475 sb->s_flags &= ~SB_RDONLY;
477 dquot_resume(sb, -1);
480 if (!sb_rdonly(sb) && (*flags & SB_RDONLY)) {
481 rc = dquot_suspend(sb, -1);
484 rc = jfs_umount_rw(sb);
485 JFS_SBI(sb)->flag = flag;
488 if ((JFS_SBI(sb)->flag & JFS_NOINTEGRITY) != (flag & JFS_NOINTEGRITY))
489 if (!sb_rdonly(sb)) {
490 rc = jfs_umount_rw(sb);
494 JFS_SBI(sb)->flag = flag;
495 ret = jfs_mount_rw(sb, 1);
498 JFS_SBI(sb)->flag = flag;
503 static int jfs_fill_super(struct super_block *sb, void *data, int silent)
505 struct jfs_sb_info *sbi;
509 int flag, ret = -EINVAL;
511 jfs_info("In jfs_read_super: s_flags=0x%lx", sb->s_flags);
513 sbi = kzalloc(sizeof(struct jfs_sb_info), GFP_KERNEL);
518 sb->s_max_links = JFS_LINK_MAX;
520 sbi->uid = INVALID_UID;
521 sbi->gid = INVALID_GID;
524 /* initialize the mount flag and determine the default error handler */
525 flag = JFS_ERR_REMOUNT_RO;
527 if (!parse_options((char *) data, sb, &newLVSize, &flag))
531 #ifdef CONFIG_JFS_POSIX_ACL
532 sb->s_flags |= SB_POSIXACL;
536 pr_err("resize option for remount only\n");
541 * Initialize blocksize to 4K.
543 sb_set_blocksize(sb, PSIZE);
546 * Set method vectors.
548 sb->s_op = &jfs_super_operations;
549 sb->s_export_op = &jfs_export_operations;
550 sb->s_xattr = jfs_xattr_handlers;
552 sb->dq_op = &dquot_operations;
553 sb->s_qcop = &jfs_quotactl_ops;
554 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;
558 * Initialize direct-mapping inode/address-space
560 inode = new_inode(sb);
566 inode->i_size = i_size_read(sb->s_bdev->bd_inode);
567 inode->i_mapping->a_ops = &jfs_metapage_aops;
568 inode_fake_hash(inode);
569 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
571 sbi->direct_inode = inode;
576 jfs_err("jfs_mount failed w/return code = %d", rc);
577 goto out_mount_failed;
582 rc = jfs_mount_rw(sb, 0);
585 jfs_err("jfs_mount_rw failed, return code = %d",
592 sb->s_magic = JFS_SUPER_MAGIC;
594 if (sbi->mntflag & JFS_OS2)
595 sb->s_d_op = &jfs_ci_dentry_operations;
597 inode = jfs_iget(sb, ROOT_I);
599 ret = PTR_ERR(inode);
602 sb->s_root = d_make_root(inode);
606 /* logical blocks are represented by 40 bits in pxd_t, etc.
607 * and page cache is indexed by long
609 sb->s_maxbytes = min(((loff_t)sb->s_blocksize) << 40, MAX_LFS_FILESIZE);
614 jfs_err("jfs_read_super: get root dentry failed");
619 jfs_err("jfs_umount failed with return code %d", rc);
621 filemap_write_and_wait(sbi->direct_inode->i_mapping);
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;
627 unload_nls(sbi->nls_tab);
633 static int jfs_freeze(struct super_block *sb)
635 struct jfs_sb_info *sbi = JFS_SBI(sb);
636 struct jfs_log *log = sbi->log;
639 if (!sb_rdonly(sb)) {
641 rc = lmLogShutdown(log);
643 jfs_error(sb, "lmLogShutdown failed\n");
645 /* let operations fail rather than hang */
650 rc = updateSuper(sb, FM_CLEAN);
652 jfs_err("jfs_freeze: updateSuper failed");
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.
663 static int jfs_unfreeze(struct super_block *sb)
665 struct jfs_sb_info *sbi = JFS_SBI(sb);
666 struct jfs_log *log = sbi->log;
669 if (!sb_rdonly(sb)) {
670 rc = updateSuper(sb, FM_MOUNT);
672 jfs_error(sb, "updateSuper failed\n");
677 jfs_error(sb, "lmLogInit failed\n");
684 static struct dentry *jfs_do_mount(struct file_system_type *fs_type,
685 int flags, const char *dev_name, void *data)
687 return mount_bdev(fs_type, flags, dev_name, data, jfs_fill_super);
690 static int jfs_sync_fs(struct super_block *sb, int wait)
692 struct jfs_log *log = JFS_SBI(sb)->log;
694 /* log == NULL indicates read-only mount */
697 * Write quota structures to quota file, sync_blockdev() will
698 * write them to disk later
700 dquot_writeback_dquots(sb, -1);
701 jfs_flush_journal(log, wait);
708 static int jfs_show_options(struct seq_file *seq, struct dentry *root)
710 struct jfs_sb_info *sbi = JFS_SBI(root->d_sb);
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));
716 if (sbi->umask != -1)
717 seq_printf(seq, ",umask=%03o", sbi->umask);
718 if (sbi->flag & JFS_NOINTEGRITY)
719 seq_puts(seq, ",nointegrity");
720 if (sbi->flag & JFS_DISCARD)
721 seq_printf(seq, ",discard=%u", sbi->minblks_trim);
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");
730 if (sbi->flag & JFS_USRQUOTA)
731 seq_puts(seq, ",usrquota");
733 if (sbi->flag & JFS_GRPQUOTA)
734 seq_puts(seq, ",grpquota");
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
744 * itself serializes the operations (and no one else should touch the files)
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)
749 struct inode *inode = sb_dqopt(sb)->files[type];
750 sector_t blk = off >> sb->s_blocksize_bits;
752 int offset = off & (sb->s_blocksize - 1);
755 struct buffer_head tmp_bh;
756 struct buffer_head *bh;
757 loff_t i_size = i_size_read(inode);
761 if (off+len > i_size)
765 tocopy = sb->s_blocksize - offset < toread ?
766 sb->s_blocksize - offset : toread;
769 tmp_bh.b_size = i_blocksize(inode);
770 err = jfs_get_block(inode, blk, &tmp_bh, 0);
773 if (!buffer_mapped(&tmp_bh)) /* A hole? */
774 memset(data, 0, tocopy);
776 bh = sb_bread(sb, tmp_bh.b_blocknr);
779 memcpy(data, bh->b_data+offset, tocopy);
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)
794 struct inode *inode = sb_dqopt(sb)->files[type];
795 sector_t blk = off >> sb->s_blocksize_bits;
797 int offset = off & (sb->s_blocksize - 1);
799 size_t towrite = len;
800 struct buffer_head tmp_bh;
801 struct buffer_head *bh;
804 while (towrite > 0) {
805 tocopy = sb->s_blocksize - offset < towrite ?
806 sb->s_blocksize - offset : towrite;
809 tmp_bh.b_size = i_blocksize(inode);
810 err = jfs_get_block(inode, blk, &tmp_bh, 1);
813 if (offset || tocopy != sb->s_blocksize)
814 bh = sb_bread(sb, tmp_bh.b_blocknr);
816 bh = sb_getblk(sb, tmp_bh.b_blocknr);
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);
834 if (len == towrite) {
838 if (inode->i_size < off+len-towrite)
839 i_size_write(inode, off+len-towrite);
840 inode->i_mtime = inode->i_ctime = current_time(inode);
841 mark_inode_dirty(inode);
843 return len - towrite;
846 static struct dquot **jfs_get_dquots(struct inode *inode)
848 return JFS_IP(inode)->i_dquot;
851 static int jfs_quota_on(struct super_block *sb, int type, int format_id,
852 const struct path *path)
857 err = dquot_quota_on(sb, type, format_id, path);
861 inode = d_inode(path->dentry);
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);
867 mark_inode_dirty(inode);
872 static int jfs_quota_off(struct super_block *sb, int type)
874 struct inode *inode = sb_dqopt(sb)->files[type];
877 if (!inode || !igrab(inode))
880 err = dquot_quota_off(sb, type);
885 JFS_IP(inode)->mode2 &= ~(JFS_NOATIME_FL | JFS_IMMUTABLE_FL);
886 inode_set_flags(inode, 0, S_NOATIME | S_IMMUTABLE);
888 mark_inode_dirty(inode);
893 return dquot_quota_off(sb, type);
897 static const struct super_operations jfs_super_operations = {
898 .alloc_inode = jfs_alloc_inode,
899 .free_inode = jfs_free_inode,
900 .dirty_inode = jfs_dirty_inode,
901 .write_inode = jfs_write_inode,
902 .evict_inode = jfs_evict_inode,
903 .put_super = jfs_put_super,
904 .sync_fs = jfs_sync_fs,
905 .freeze_fs = jfs_freeze,
906 .unfreeze_fs = jfs_unfreeze,
907 .statfs = jfs_statfs,
908 .remount_fs = jfs_remount,
909 .show_options = jfs_show_options,
911 .quota_read = jfs_quota_read,
912 .quota_write = jfs_quota_write,
913 .get_dquots = jfs_get_dquots,
917 static const struct export_operations jfs_export_operations = {
918 .fh_to_dentry = jfs_fh_to_dentry,
919 .fh_to_parent = jfs_fh_to_parent,
920 .get_parent = jfs_get_parent,
923 static struct file_system_type jfs_fs_type = {
924 .owner = THIS_MODULE,
926 .mount = jfs_do_mount,
927 .kill_sb = kill_block_super,
928 .fs_flags = FS_REQUIRES_DEV,
930 MODULE_ALIAS_FS("jfs");
932 static void init_once(void *foo)
934 struct jfs_inode_info *jfs_ip = (struct jfs_inode_info *) foo;
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;
943 inode_init_once(&jfs_ip->vfs_inode);
946 static int __init init_jfs_fs(void)
952 kmem_cache_create_usercopy("jfs_ip", sizeof(struct jfs_inode_info),
953 0, SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD|SLAB_ACCOUNT,
954 offsetof(struct jfs_inode_info, i_inline), IDATASIZE,
956 if (jfs_inode_cachep == NULL)
960 * Metapage initialization
962 rc = metapage_init();
964 jfs_err("metapage_init failed w/rc = %d", rc);
969 * Transaction Manager initialization
973 jfs_err("txInit failed w/rc = %d", rc);
978 * I/O completion thread (endio)
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);
987 if (commit_threads < 1)
988 commit_threads = num_online_cpus();
989 if (commit_threads > MAX_COMMIT_THREADS)
990 commit_threads = MAX_COMMIT_THREADS;
992 for (i = 0; i < commit_threads; i++) {
993 jfsCommitThread[i] = kthread_run(jfs_lazycommit, NULL,
995 if (IS_ERR(jfsCommitThread[i])) {
996 rc = PTR_ERR(jfsCommitThread[i]);
997 jfs_err("init_jfs_fs: fork failed w/rc = %d", rc);
999 goto kill_committask;
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);
1007 goto kill_committask;
1014 rc = register_filesystem(&jfs_fs_type);
1021 kthread_stop(jfsSyncThread);
1023 for (i = 0; i < commit_threads; i++)
1024 kthread_stop(jfsCommitThread[i]);
1025 kthread_stop(jfsIOthread);
1031 kmem_cache_destroy(jfs_inode_cachep);
1035 static void __exit exit_jfs_fs(void)
1039 jfs_info("exit_jfs_fs called");
1044 kthread_stop(jfsIOthread);
1045 for (i = 0; i < commit_threads; i++)
1046 kthread_stop(jfsCommitThread[i]);
1047 kthread_stop(jfsSyncThread);
1051 unregister_filesystem(&jfs_fs_type);
1054 * Make sure all delayed rcu free inodes are flushed before we
1058 kmem_cache_destroy(jfs_inode_cachep);
1061 module_init(init_jfs_fs)
1062 module_exit(exit_jfs_fs)