*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
+ * the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
- *
+ *
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
* the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
+ * along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/fs.h>
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/parser.h>
#include <linux/completion.h>
#include <linux/vfs.h>
+#include <linux/mount.h>
#include <linux/moduleparam.h>
+#include <linux/kthread.h>
+#include <linux/posix_acl.h>
+#include <linux/buffer_head.h>
#include <asm/uaccess.h>
+#include <linux/seq_file.h>
#include "jfs_incore.h"
#include "jfs_filsys.h"
+#include "jfs_inode.h"
#include "jfs_metapage.h"
#include "jfs_superblock.h"
#include "jfs_dmap.h"
MODULE_AUTHOR("Steve Best/Dave Kleikamp/Barry Arndt, IBM");
MODULE_LICENSE("GPL");
-static kmem_cache_t * jfs_inode_cachep;
+static struct kmem_cache * jfs_inode_cachep;
static struct super_operations jfs_super_operations;
static struct export_operations jfs_export_operations;
module_param(commit_threads, int, 0);
MODULE_PARM_DESC(commit_threads, "Number of commit threads");
-int jfs_stop_threads;
-static pid_t jfsIOthread;
-static pid_t jfsCommitThread[MAX_COMMIT_THREADS];
-static pid_t jfsSyncThread;
-DECLARE_COMPLETION(jfsIOwait);
+static struct task_struct *jfsCommitThread[MAX_COMMIT_THREADS];
+struct task_struct *jfsIOthread;
+struct task_struct *jfsSyncThread;
#ifdef CONFIG_JFS_DEBUG
int jfsloglevel = JFS_LOGLEVEL_WARN;
-module_param(jfsloglevel, int, 644);
+module_param(jfsloglevel, int, 0644);
MODULE_PARM_DESC(jfsloglevel, "Specify JFS loglevel (0, 1 or 2)");
#endif
-/*
- * External declarations
- */
-extern int jfs_mount(struct super_block *);
-extern int jfs_mount_rw(struct super_block *, int);
-extern int jfs_umount(struct super_block *);
-extern int jfs_umount_rw(struct super_block *);
-
-extern int jfsIOWait(void *);
-extern int jfs_lazycommit(void *);
-extern int jfs_sync(void *);
-
-extern void jfs_read_inode(struct inode *inode);
-extern void jfs_dirty_inode(struct inode *inode);
-extern void jfs_delete_inode(struct inode *inode);
-extern void jfs_write_inode(struct inode *inode, int wait);
-
-extern struct dentry *jfs_get_parent(struct dentry *dentry);
-extern int jfs_extendfs(struct super_block *, s64, int);
-
-extern struct dentry_operations jfs_ci_dentry_operations;
-
-#ifdef PROC_FS_JFS /* see jfs_debug.h */
-extern void jfs_proc_init(void);
-extern void jfs_proc_clean(void);
-#endif
-
-extern wait_queue_head_t jfs_IO_thread_wait;
-extern wait_queue_head_t jfs_commit_thread_wait;
-extern wait_queue_head_t jfs_sync_thread_wait;
-
static void jfs_handle_error(struct super_block *sb)
{
struct jfs_sb_info *sbi = JFS_SBI(sb);
"as read-only\n",
sb->s_id);
sb->s_flags |= MS_RDONLY;
- }
+ }
/* nothing is done for continue beyond marking the superblock dirty */
}
va_list args;
va_start(args, function);
- vsprintf(error_buf, function, args);
+ vsnprintf(error_buf, sizeof(error_buf), function, args);
va_end(args);
printk(KERN_ERR "ERROR: (device %s): %s\n", sb->s_id, error_buf);
{
struct jfs_inode_info *ji = JFS_IP(inode);
+ BUG_ON(!list_empty(&ji->anon_inode_list));
+
spin_lock_irq(&ji->ag_lock);
if (ji->active_ag != -1) {
struct bmap *bmap = JFS_SBI(inode->i_sb)->bmap;
kmem_cache_free(jfs_inode_cachep, ji);
}
-static int jfs_statfs(struct super_block *sb, struct kstatfs *buf)
+static int jfs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
- struct jfs_sb_info *sbi = JFS_SBI(sb);
+ struct jfs_sb_info *sbi = JFS_SBI(dentry->d_sb);
s64 maxinodes;
struct inomap *imap = JFS_IP(sbi->ipimap)->i_imap;
unload_nls(sbi->nls_tab);
sbi->nls_tab = NULL;
+ truncate_inode_pages(sbi->direct_inode->i_mapping, 0);
+ iput(sbi->direct_inode);
+ sbi->direct_inode = NULL;
+
kfree(sbi);
}
enum {
Opt_integrity, Opt_nointegrity, Opt_iocharset, Opt_resize,
- Opt_resize_nosize, Opt_errors, Opt_ignore, Opt_err,
+ Opt_resize_nosize, Opt_errors, Opt_ignore, Opt_err, Opt_quota,
+ Opt_usrquota, Opt_grpquota, Opt_uid, Opt_gid, Opt_umask,
+ Opt_tag, Opt_notag, Opt_tagid
};
static match_table_t tokens = {
{Opt_resize, "resize=%u"},
{Opt_resize_nosize, "resize"},
{Opt_errors, "errors=%s"},
+ {Opt_tag, "tag"},
+ {Opt_notag, "notag"},
+ {Opt_tagid, "tagid=%u"},
+ {Opt_tag, "tagxid"},
{Opt_ignore, "noquota"},
{Opt_ignore, "quota"},
- {Opt_ignore, "usrquota"},
- {Opt_ignore, "grpquota"},
+ {Opt_usrquota, "usrquota"},
+ {Opt_grpquota, "grpquota"},
+ {Opt_uid, "uid=%u"},
+ {Opt_gid, "gid=%u"},
+ {Opt_umask, "umask=%u"},
{Opt_err, NULL}
};
static int parse_options(char *options, struct super_block *sb, s64 *newLVSize,
int *flag)
{
- void *nls_map = NULL;
+ void *nls_map = (void *)-1; /* -1: no change; NULL: none */
char *p;
struct jfs_sb_info *sbi = JFS_SBI(sb);
/* Don't do anything ;-) */
break;
case Opt_iocharset:
- if (nls_map) /* specified iocharset twice! */
+ if (nls_map && nls_map != (void *) -1)
unload_nls(nls_map);
- nls_map = load_nls(args[0].from);
- if (!nls_map) {
- printk(KERN_ERR "JFS: charset not found\n");
- goto cleanup;
+ if (!strcmp(args[0].from, "none"))
+ nls_map = NULL;
+ else {
+ nls_map = load_nls(args[0].from);
+ if (!nls_map) {
+ printk(KERN_ERR
+ "JFS: charset not found\n");
+ goto cleanup;
+ }
}
break;
case Opt_resize:
}
break;
}
+
+#ifdef CONFIG_QUOTA
+ case Opt_quota:
+ case Opt_usrquota:
+ *flag |= JFS_USRQUOTA;
+ break;
+ case Opt_grpquota:
+ *flag |= JFS_GRPQUOTA;
+ break;
+#else
+ case Opt_usrquota:
+ case Opt_grpquota:
+ case Opt_quota:
+ printk(KERN_ERR
+ "JFS: quota operations not supported\n");
+ break;
+#endif
+ case Opt_uid:
+ {
+ char *uid = args[0].from;
+ sbi->uid = simple_strtoul(uid, &uid, 0);
+ break;
+ }
+ case Opt_gid:
+ {
+ char *gid = args[0].from;
+ sbi->gid = simple_strtoul(gid, &gid, 0);
+ break;
+ }
+ case Opt_umask:
+ {
+ char *umask = args[0].from;
+ sbi->umask = simple_strtoul(umask, &umask, 8);
+ if (sbi->umask & ~0777) {
+ printk(KERN_ERR
+ "JFS: Invalid value of umask\n");
+ goto cleanup;
+ }
+ break;
+ }
+#ifndef CONFIG_TAGGING_NONE
+ case Opt_tag:
+ *flag |= JFS_TAGGED;
+ break;
+ case Opt_notag:
+ *flag &= JFS_TAGGED;
+ break;
+#endif
+#ifdef CONFIG_PROPAGATE
+ case Opt_tagid:
+ /* use args[0] */
+ *flag |= JFS_TAGGED;
+ break;
+#endif
default:
printk("jfs: Unrecognized mount option \"%s\" "
" or missing value\n", p);
}
}
- if (nls_map) {
+ if (nls_map != (void *) -1) {
/* Discard old (if remount) */
if (sbi->nls_tab)
unload_nls(sbi->nls_tab);
return 1;
cleanup:
- if (nls_map)
+ if (nls_map && nls_map != (void *) -1)
unload_nls(nls_map);
return 0;
}
if (!parse_options(data, sb, &newLVSize, &flag)) {
return -EINVAL;
}
+
+ if ((flag & JFS_TAGGED) && !(sb->s_flags & MS_TAGGED)) {
+ printk(KERN_ERR "JFS: %s: tagging not permitted on remount.\n",
+ sb->s_id);
+ return -EINVAL;
+ }
+
if (newLVSize) {
if (sb->s_flags & MS_RDONLY) {
printk(KERN_ERR
}
if ((sb->s_flags & MS_RDONLY) && !(*flags & MS_RDONLY)) {
+ /*
+ * Invalidate any previously read metadata. fsck may have
+ * changed the on-disk data since we mounted r/o
+ */
+ truncate_inode_pages(JFS_SBI(sb)->direct_inode->i_mapping, 0);
+
JFS_SBI(sb)->flag = flag;
return jfs_mount_rw(sb, 1);
}
if (!new_valid_dev(sb->s_bdev->bd_dev))
return -EOVERFLOW;
- sbi = kmalloc(sizeof (struct jfs_sb_info), GFP_KERNEL);
+ sbi = kzalloc(sizeof (struct jfs_sb_info), GFP_KERNEL);
if (!sbi)
- return -ENOSPC;
- memset(sbi, 0, sizeof (struct jfs_sb_info));
+ return -ENOMEM;
sb->s_fs_info = sbi;
sbi->sb = sb;
+ sbi->uid = sbi->gid = sbi->umask = -1;
/* initialize the mount flag and determine the default error handler */
flag = JFS_ERR_REMOUNT_RO;
}
sbi->flag = flag;
+#ifdef CONFIG_JFS_POSIX_ACL
+ sb->s_flags |= MS_POSIXACL;
+#endif
+ /* map mount option tagxid */
+ if (sbi->flag & JFS_TAGGED)
+ sb->s_flags |= MS_TAGGED;
+
if (newLVSize) {
printk(KERN_ERR "resize option for remount only\n");
return -EINVAL;
sb->s_op = &jfs_super_operations;
sb->s_export_op = &jfs_export_operations;
+ /*
+ * Initialize direct-mapping inode/address-space
+ */
+ inode = new_inode(sb);
+ if (inode == NULL)
+ goto out_kfree;
+ inode->i_ino = 0;
+ inode->i_nlink = 1;
+ inode->i_size = sb->s_bdev->bd_inode->i_size;
+ inode->i_mapping->a_ops = &jfs_metapage_aops;
+ insert_inode_hash(inode);
+ mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
+
+ sbi->direct_inode = inode;
+
rc = jfs_mount(sb);
if (rc) {
if (!silent) {
jfs_err("jfs_mount failed w/return code = %d", rc);
}
- goto out_kfree;
+ goto out_mount_failed;
}
if (sb->s_flags & MS_RDONLY)
sbi->log = NULL;
*/
sb->s_maxbytes = min(((u64) PAGE_CACHE_SIZE << 32) - 1, sb->s_maxbytes);
#endif
-
+ sb->s_time_gran = 1;
return 0;
out_no_root:
if (rc) {
jfs_err("jfs_umount failed with return code %d", rc);
}
+out_mount_failed:
+ filemap_write_and_wait(sbi->direct_inode->i_mapping);
+ truncate_inode_pages(sbi->direct_inode->i_mapping, 0);
+ make_bad_inode(sbi->direct_inode);
+ iput(sbi->direct_inode);
+ sbi->direct_inode = NULL;
out_kfree:
if (sbi->nls_tab)
unload_nls(sbi->nls_tab);
}
}
-static struct super_block *jfs_get_sb(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *data)
+static int jfs_get_sb(struct file_system_type *fs_type,
+ int flags, const char *dev_name, void *data, struct vfsmount *mnt)
{
- return get_sb_bdev(fs_type, flags, dev_name, data, jfs_fill_super);
+ return get_sb_bdev(fs_type, flags, dev_name, data, jfs_fill_super,
+ mnt);
}
static int jfs_sync_fs(struct super_block *sb, int wait)
struct jfs_log *log = JFS_SBI(sb)->log;
/* log == NULL indicates read-only mount */
- if (log)
+ if (log) {
jfs_flush_journal(log, wait);
+ jfs_syncpt(log, 0);
+ }
+
+ return 0;
+}
+
+static int jfs_show_options(struct seq_file *seq, struct vfsmount *vfs)
+{
+ struct jfs_sb_info *sbi = JFS_SBI(vfs->mnt_sb);
+
+ if (sbi->uid != -1)
+ seq_printf(seq, ",uid=%d", sbi->uid);
+ if (sbi->gid != -1)
+ seq_printf(seq, ",gid=%d", sbi->gid);
+ if (sbi->umask != -1)
+ seq_printf(seq, ",umask=%03o", sbi->umask);
+ if (sbi->flag & JFS_NOINTEGRITY)
+ seq_puts(seq, ",nointegrity");
+
+#ifdef CONFIG_QUOTA
+ if (sbi->flag & JFS_USRQUOTA)
+ seq_puts(seq, ",usrquota");
+
+ if (sbi->flag & JFS_GRPQUOTA)
+ seq_puts(seq, ",grpquota");
+#endif
return 0;
}
+#ifdef CONFIG_QUOTA
+
+/* Read data from quotafile - avoid pagecache and such because we cannot afford
+ * acquiring the locks... As quota files are never truncated and quota code
+ * itself serializes the operations (and noone else should touch the files)
+ * we don't have to be afraid of races */
+static ssize_t jfs_quota_read(struct super_block *sb, int type, char *data,
+ size_t len, loff_t off)
+{
+ struct inode *inode = sb_dqopt(sb)->files[type];
+ sector_t blk = off >> sb->s_blocksize_bits;
+ int err = 0;
+ int offset = off & (sb->s_blocksize - 1);
+ int tocopy;
+ size_t toread;
+ struct buffer_head tmp_bh;
+ struct buffer_head *bh;
+ loff_t i_size = i_size_read(inode);
+
+ if (off > i_size)
+ return 0;
+ if (off+len > i_size)
+ len = i_size-off;
+ toread = len;
+ while (toread > 0) {
+ tocopy = sb->s_blocksize - offset < toread ?
+ sb->s_blocksize - offset : toread;
+
+ tmp_bh.b_state = 0;
+ tmp_bh.b_size = 1 << inode->i_blkbits;
+ err = jfs_get_block(inode, blk, &tmp_bh, 0);
+ if (err)
+ return err;
+ if (!buffer_mapped(&tmp_bh)) /* A hole? */
+ memset(data, 0, tocopy);
+ else {
+ bh = sb_bread(sb, tmp_bh.b_blocknr);
+ if (!bh)
+ return -EIO;
+ memcpy(data, bh->b_data+offset, tocopy);
+ brelse(bh);
+ }
+ offset = 0;
+ toread -= tocopy;
+ data += tocopy;
+ blk++;
+ }
+ return len;
+}
+
+/* Write to quotafile */
+static ssize_t jfs_quota_write(struct super_block *sb, int type,
+ const char *data, size_t len, loff_t off)
+{
+ struct inode *inode = sb_dqopt(sb)->files[type];
+ sector_t blk = off >> sb->s_blocksize_bits;
+ int err = 0;
+ int offset = off & (sb->s_blocksize - 1);
+ int tocopy;
+ size_t towrite = len;
+ struct buffer_head tmp_bh;
+ struct buffer_head *bh;
+
+ mutex_lock(&inode->i_mutex);
+ while (towrite > 0) {
+ tocopy = sb->s_blocksize - offset < towrite ?
+ sb->s_blocksize - offset : towrite;
+
+ tmp_bh.b_state = 0;
+ tmp_bh.b_size = 1 << inode->i_blkbits;
+ err = jfs_get_block(inode, blk, &tmp_bh, 1);
+ if (err)
+ goto out;
+ if (offset || tocopy != sb->s_blocksize)
+ bh = sb_bread(sb, tmp_bh.b_blocknr);
+ else
+ bh = sb_getblk(sb, tmp_bh.b_blocknr);
+ if (!bh) {
+ err = -EIO;
+ goto out;
+ }
+ lock_buffer(bh);
+ memcpy(bh->b_data+offset, data, tocopy);
+ flush_dcache_page(bh->b_page);
+ set_buffer_uptodate(bh);
+ mark_buffer_dirty(bh);
+ unlock_buffer(bh);
+ brelse(bh);
+ offset = 0;
+ towrite -= tocopy;
+ data += tocopy;
+ blk++;
+ }
+out:
+ if (len == towrite)
+ return err;
+ if (inode->i_size < off+len-towrite)
+ i_size_write(inode, off+len-towrite);
+ inode->i_version++;
+ inode->i_mtime = inode->i_ctime = CURRENT_TIME;
+ mark_inode_dirty(inode);
+ mutex_unlock(&inode->i_mutex);
+ return len - towrite;
+}
+
+#endif
+
static struct super_operations jfs_super_operations = {
.alloc_inode = jfs_alloc_inode,
.destroy_inode = jfs_destroy_inode,
.unlockfs = jfs_unlockfs,
.statfs = jfs_statfs,
.remount_fs = jfs_remount,
+ .show_options = jfs_show_options,
+#ifdef CONFIG_QUOTA
+ .quota_read = jfs_quota_read,
+ .quota_write = jfs_quota_write,
+#endif
};
static struct export_operations jfs_export_operations = {
.fs_flags = FS_REQUIRES_DEV,
};
-extern int metapage_init(void);
-extern int txInit(void);
-extern void txExit(void);
-extern void metapage_exit(void);
-
-static void init_once(void *foo, kmem_cache_t * cachep, unsigned long flags)
+static void init_once(void *foo, struct kmem_cache * cachep, unsigned long flags)
{
struct jfs_inode_info *jfs_ip = (struct jfs_inode_info *) foo;
memset(jfs_ip, 0, sizeof(struct jfs_inode_info));
INIT_LIST_HEAD(&jfs_ip->anon_inode_list);
init_rwsem(&jfs_ip->rdwrlock);
- init_MUTEX(&jfs_ip->commit_sem);
+ mutex_init(&jfs_ip->commit_mutex);
init_rwsem(&jfs_ip->xattr_sem);
spin_lock_init(&jfs_ip->ag_lock);
jfs_ip->active_ag = -1;
int rc;
jfs_inode_cachep =
- kmem_cache_create("jfs_ip", sizeof(struct jfs_inode_info), 0,
- SLAB_RECLAIM_ACCOUNT, init_once, NULL);
+ kmem_cache_create("jfs_ip", sizeof(struct jfs_inode_info), 0,
+ SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD,
+ init_once, NULL);
if (jfs_inode_cachep == NULL)
return -ENOMEM;
/*
* I/O completion thread (endio)
*/
- jfsIOthread = kernel_thread(jfsIOWait, NULL, CLONE_KERNEL);
- if (jfsIOthread < 0) {
- jfs_err("init_jfs_fs: fork failed w/rc = %d", jfsIOthread);
+ jfsIOthread = kthread_run(jfsIOWait, NULL, "jfsIO");
+ if (IS_ERR(jfsIOthread)) {
+ rc = PTR_ERR(jfsIOthread);
+ jfs_err("init_jfs_fs: fork failed w/rc = %d", rc);
goto end_txmngr;
}
- wait_for_completion(&jfsIOwait); /* Wait until thread starts */
if (commit_threads < 1)
commit_threads = num_online_cpus();
- else if (commit_threads > MAX_COMMIT_THREADS)
+ if (commit_threads > MAX_COMMIT_THREADS)
commit_threads = MAX_COMMIT_THREADS;
for (i = 0; i < commit_threads; i++) {
- jfsCommitThread[i] = kernel_thread(jfs_lazycommit, NULL,
- CLONE_KERNEL);
- if (jfsCommitThread[i] < 0) {
- jfs_err("init_jfs_fs: fork failed w/rc = %d",
- jfsCommitThread[i]);
+ jfsCommitThread[i] = kthread_run(jfs_lazycommit, NULL, "jfsCommit");
+ if (IS_ERR(jfsCommitThread[i])) {
+ rc = PTR_ERR(jfsCommitThread[i]);
+ jfs_err("init_jfs_fs: fork failed w/rc = %d", rc);
commit_threads = i;
goto kill_committask;
}
- /* Wait until thread starts */
- wait_for_completion(&jfsIOwait);
}
- jfsSyncThread = kernel_thread(jfs_sync, NULL, CLONE_KERNEL);
- if (jfsSyncThread < 0) {
- jfs_err("init_jfs_fs: fork failed w/rc = %d", jfsSyncThread);
+ jfsSyncThread = kthread_run(jfs_sync, NULL, "jfsSync");
+ if (IS_ERR(jfsSyncThread)) {
+ rc = PTR_ERR(jfsSyncThread);
+ jfs_err("init_jfs_fs: fork failed w/rc = %d", rc);
goto kill_committask;
}
- wait_for_completion(&jfsIOwait); /* Wait until thread starts */
#ifdef PROC_FS_JFS
jfs_proc_init();
return register_filesystem(&jfs_fs_type);
kill_committask:
- jfs_stop_threads = 1;
- wake_up_all(&jfs_commit_thread_wait);
for (i = 0; i < commit_threads; i++)
- wait_for_completion(&jfsIOwait);
-
- wake_up(&jfs_IO_thread_wait);
- wait_for_completion(&jfsIOwait); /* Wait for thread exit */
+ kthread_stop(jfsCommitThread[i]);
+ kthread_stop(jfsIOthread);
end_txmngr:
txExit();
free_metapage:
jfs_info("exit_jfs_fs called");
- jfs_stop_threads = 1;
txExit();
metapage_exit();
- wake_up(&jfs_IO_thread_wait);
- wait_for_completion(&jfsIOwait); /* Wait until IO thread exits */
- wake_up_all(&jfs_commit_thread_wait);
+
+ kthread_stop(jfsIOthread);
for (i = 0; i < commit_threads; i++)
- wait_for_completion(&jfsIOwait);
- wake_up(&jfs_sync_thread_wait);
- wait_for_completion(&jfsIOwait); /* Wait until Sync thread exits */
+ kthread_stop(jfsCommitThread[i]);
+ kthread_stop(jfsSyncThread);
#ifdef PROC_FS_JFS
jfs_proc_clean();
#endif