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writeback: fix ntfs with sb_has_dirty_inodes()

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NTFS's if-condition on dirty inodes is not complete.  Fix it with
sb_has_dirty_inodes().

Cc: Anton Altaparmakov <aia21@cantab.net>
Cc: Ken Chen <kenchen@google.com>
Signed-off-by: Fengguang Wu <wfg@mail.ustc.edu.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Fengguang Wu 2007-10-16 23:30:39 -07:00 committed by Linus Torvalds
parent 2c13657910
commit 08d8e9749e
3 changed files with 12 additions and 3 deletions
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10
fs/fs-writeback.c
View file

@ -199,6 +199,14 @@ static void queue_io(struct super_block *sb,
move_expired_inodes(&sb->s_dirty, &sb->s_io, older_than_this); move_expired_inodes(&sb->s_dirty, &sb->s_io, older_than_this);
} }
int sb_has_dirty_inodes(struct super_block *sb)
{
return !list_empty(&sb->s_dirty) ||
!list_empty(&sb->s_io) ||
!list_empty(&sb->s_more_io);
}
EXPORT_SYMBOL(sb_has_dirty_inodes);
/* /*
* Write a single inode's dirty pages and inode data out to disk. * Write a single inode's dirty pages and inode data out to disk.
* If `wait' is set, wait on the writeout. * If `wait' is set, wait on the writeout.
@ -497,7 +505,7 @@ writeback_inodes(struct writeback_control *wbc)
restart: restart:
sb = sb_entry(super_blocks.prev); sb = sb_entry(super_blocks.prev);
for (; sb != sb_entry(&super_blocks); sb = sb_entry(sb->s_list.prev)) { for (; sb != sb_entry(&super_blocks); sb = sb_entry(sb->s_list.prev)) {
if (!list_empty(&sb->s_dirty) || !list_empty(&sb->s_io)) { if (sb_has_dirty_inodes(sb)) {
/* we're making our own get_super here */ /* we're making our own get_super here */
sb->s_count++; sb->s_count++;
spin_unlock(&sb_lock); spin_unlock(&sb_lock);

4
fs/ntfs/super.c
View file

@ -2381,14 +2381,14 @@ static void ntfs_put_super(struct super_block *sb)
*/ */
ntfs_commit_inode(vol->mft_ino); ntfs_commit_inode(vol->mft_ino);
write_inode_now(vol->mft_ino, 1); write_inode_now(vol->mft_ino, 1);
if (!list_empty(&sb->s_dirty)) { if (sb_has_dirty_inodes(sb)) {
const char *s1, *s2; const char *s1, *s2;
mutex_lock(&vol->mft_ino->i_mutex); mutex_lock(&vol->mft_ino->i_mutex);
truncate_inode_pages(vol->mft_ino->i_mapping, 0); truncate_inode_pages(vol->mft_ino->i_mapping, 0);
mutex_unlock(&vol->mft_ino->i_mutex); mutex_unlock(&vol->mft_ino->i_mutex);
write_inode_now(vol->mft_ino, 1); write_inode_now(vol->mft_ino, 1);
if (!list_empty(&sb->s_dirty)) { if (sb_has_dirty_inodes(sb)) {
static const char *_s1 = "inodes"; static const char *_s1 = "inodes";
static const char *_s2 = ""; static const char *_s2 = "";
s1 = _s1; s1 = _s1;

1
include/linux/fs.h
View file

@ -1729,6 +1729,7 @@ extern int bdev_read_only(struct block_device *);
extern int set_blocksize(struct block_device *, int); extern int set_blocksize(struct block_device *, int);
extern int sb_set_blocksize(struct super_block *, int); extern int sb_set_blocksize(struct super_block *, int);
extern int sb_min_blocksize(struct super_block *, int); extern int sb_min_blocksize(struct super_block *, int);
extern int sb_has_dirty_inodes(struct super_block *);
extern int generic_file_mmap(struct file *, struct vm_area_struct *); extern int generic_file_mmap(struct file *, struct vm_area_struct *);
extern int generic_file_readonly_mmap(struct file *, struct vm_area_struct *); extern int generic_file_readonly_mmap(struct file *, struct vm_area_struct *);