[PATCH] FAT: Use synchronous update for {vfat,msdos}_add_entry()

Use the synchronous updates, in order to guarantee that the writing to
a disk is completeing when a system call returns.
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

fs/msdos/namei.c

@@ -278,6 +278,9 @@ static int msdos_add_entry(struct inode *dir, const unsigned char *name,
 		return err;
 
 	dir->i_ctime = dir->i_mtime = *ts;
+	if (IS_DIRSYNC(dir))
+		(void)fat_sync_inode(dir);
+	else
 		mark_inode_dirty(dir);
 
 	return 0;

fs/vfat/namei.c

@@ -684,6 +684,9 @@ static int vfat_add_entry(struct inode *dir, struct qstr *qname, int is_dir,
 
 	/* update timestamp */
 	dir->i_ctime = dir->i_mtime = dir->i_atime = *ts;
+	if (IS_DIRSYNC(dir))
+		(void)fat_sync_inode(dir);
+	else
 		mark_inode_dirty(dir);
 cleanup:
 	kfree(slots);