115 	struct super_block *sb = inode->i_sb;  in __fat_get_block()  local
116 	struct msdos_sb_info *sbi = MSDOS_SB(sb);  in __fat_get_block()
125 		map_bh(bh_result, sb, phys);  in __fat_get_block()
132 	if (iblock != MSDOS_I(inode)->mmu_private >> sb->s_blocksize_bits) {  in __fat_get_block()
133 		fat_fs_error(sb, "corrupted file size (i_pos %lld, %lld)",  in __fat_get_block()
149 	MSDOS_I(inode)->mmu_private += *max_blocks << sb->s_blocksize_bits;  in __fat_get_block()
158 	map_bh(bh_result, sb, phys);  in __fat_get_block()
166 	struct super_block *sb = inode->i_sb;  in fat_get_block()  local
173 	bh_result->b_size = max_blocks << sb->s_blocksize_bits;  in fat_get_block()
335 static void fat_hash_init(struct super_block *sb)  in fat_hash_init()  argument
337 	struct msdos_sb_info *sbi = MSDOS_SB(sb);  in fat_hash_init()
350 static void dir_hash_init(struct super_block *sb)  in dir_hash_init()  argument
352 	struct msdos_sb_info *sbi = MSDOS_SB(sb);  in dir_hash_init()
405 struct inode *fat_iget(struct super_block *sb, loff_t i_pos)  in fat_iget()  argument
407 	struct msdos_sb_info *sbi = MSDOS_SB(sb);  in fat_iget()
414 		BUG_ON(i->vfs_inode.i_sb != sb);  in fat_iget()
524 struct inode *fat_build_inode(struct super_block *sb,  in fat_build_inode()  argument
530 	fat_lock_build_inode(MSDOS_SB(sb));  in fat_build_inode()
531 	inode = fat_iget(sb, i_pos);  in fat_build_inode()
534 	inode = new_inode(sb);  in fat_build_inode()
539 	inode->i_ino = iunique(sb, MSDOS_ROOT_INO);  in fat_build_inode()
550 	fat_unlock_build_inode(MSDOS_SB(sb));  in fat_build_inode()
569 static void fat_set_state(struct super_block *sb,  in fat_set_state()  argument
574 	struct msdos_sb_info *sbi = MSDOS_SB(sb);  in fat_set_state()
577 	if ((sb->s_flags & MS_RDONLY) && !force)  in fat_set_state()
584 			fat_msg(sb, KERN_WARNING, "Volume was not properly "  in fat_set_state()
590 	bh = sb_bread(sb, 0);  in fat_set_state()
592 		fat_msg(sb, KERN_ERR, "unable to read boot sector "  in fat_set_state()
626 static void fat_put_super(struct super_block *sb)  in fat_put_super()  argument
628 	struct msdos_sb_info *sbi = MSDOS_SB(sb);  in fat_put_super()
630 	fat_set_state(sb, 0, 0);  in fat_put_super()
640 static struct inode *fat_alloc_inode(struct super_block *sb)  in fat_alloc_inode()  argument
697 static int fat_remount(struct super_block *sb, int *flags, char *data)  in fat_remount()  argument
700 	struct msdos_sb_info *sbi = MSDOS_SB(sb);  in fat_remount()
703 	sync_filesystem(sb);  in fat_remount()
707 	if (new_rdonly != (sb->s_flags & MS_RDONLY)) {  in fat_remount()
709 			fat_set_state(sb, 0, 0);  in fat_remount()
711 			fat_set_state(sb, 1, 1);  in fat_remount()
718 	struct super_block *sb = dentry->d_sb;  in fat_statfs()  local
719 	struct msdos_sb_info *sbi = MSDOS_SB(sb);  in fat_statfs()
720 	u64 id = huge_encode_dev(sb->s_bdev->bd_dev);  in fat_statfs()
744 	struct super_block *sb = inode->i_sb;  in __fat_write_inode()  local
745 	struct msdos_sb_info *sbi = MSDOS_SB(sb);  in __fat_write_inode()
761 	bh = sb_bread(sb, blocknr);  in __fat_write_inode()
763 		fat_msg(sb, KERN_ERR, "unable to read inode block "  in __fat_write_inode()
804 		struct super_block *sb = inode->i_sb;  in fat_write_inode()  local
806 		mutex_lock(&MSDOS_SB(sb)->s_lock);  in fat_write_inode()
807 		err = fat_clusters_flush(sb);  in fat_write_inode()
808 		mutex_unlock(&MSDOS_SB(sb)->s_lock);  in fat_write_inode()
1022 static int parse_options(struct super_block *sb, char *options, int is_vfat,  in parse_options()  argument
1237 			fat_msg(sb, KERN_INFO, "\"%s\" option is obsolete, "  in parse_options()
1243 				fat_msg(sb, KERN_ERR,  in parse_options()
1254 		fat_msg(sb, KERN_WARNING, "utf8 is not a recommended IO charset"  in parse_options()
1265 		sb->s_flags |= MS_RDONLY;  in parse_options()
1266 		sb->s_export_op = &fat_export_ops_nostale;  in parse_options()
1307 static unsigned long calc_fat_clusters(struct super_block *sb)  in calc_fat_clusters()  argument
1309 	struct msdos_sb_info *sbi = MSDOS_SB(sb);  in calc_fat_clusters()
1313 		unsigned long ent_per_sec = sb->s_blocksize * 8 / sbi->fat_bits;  in calc_fat_clusters()
1317 	return sbi->fat_length * sb->s_blocksize * 8 / sbi->fat_bits;  in calc_fat_clusters()
1345 static int fat_read_bpb(struct super_block *sb, struct fat_boot_sector *b,  in fat_read_bpb()  argument
1373 			fat_msg(sb, KERN_ERR,  in fat_read_bpb()
1379 			fat_msg(sb, KERN_ERR, "bogus number of FAT structure");  in fat_read_bpb()
1390 			fat_msg(sb, KERN_ERR, "invalid media value (0x%02x)",  in fat_read_bpb()
1399 			fat_msg(sb, KERN_ERR, "bogus logical sector size %u",  in fat_read_bpb()
1406 			fat_msg(sb, KERN_ERR, "bogus sectors per cluster %u",  in fat_read_bpb()
1417 static int fat_read_static_bpb(struct super_block *sb,  in fat_read_static_bpb()  argument
1428 	bd_sects = i_size_read(sb->s_bdev->bd_inode) / SECTOR_SIZE;  in fat_read_static_bpb()
1433 			fat_msg(sb, KERN_ERR,  in fat_read_static_bpb()
1444 			fat_msg(sb, KERN_ERR,  in fat_read_static_bpb()
1458 			fat_msg(sb, KERN_WARNING,  in fat_read_static_bpb()
1465 		fat_msg(sb, KERN_INFO,  in fat_read_static_bpb()
1486 int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat,  in fat_fill_super()  argument
1509 	sb->s_fs_info = sbi;  in fat_fill_super()
1511 	sb->s_flags |= MS_NODIRATIME;  in fat_fill_super()
1512 	sb->s_magic = MSDOS_SUPER_MAGIC;  in fat_fill_super()
1513 	sb->s_op = &fat_sops;  in fat_fill_super()
1514 	sb->s_export_op = &fat_export_ops;  in fat_fill_super()
1519 	error = parse_options(sb, data, isvfat, silent, &debug, &sbi->options);  in fat_fill_super()
1523 	setup(sb); /* flavour-specific stuff that needs options */  in fat_fill_super()
1526 	sb_min_blocksize(sb, 512);  in fat_fill_super()
1527 	bh = sb_bread(sb, 0);  in fat_fill_super()
1529 		fat_msg(sb, KERN_ERR, "unable to read boot sector");  in fat_fill_super()
1533 	error = fat_read_bpb(sb, (struct fat_boot_sector *)bh->b_data, silent,  in fat_fill_super()
1536 		error = fat_read_static_bpb(sb,  in fat_fill_super()
1549 	if (logical_sector_size < sb->s_blocksize) {  in fat_fill_super()
1550 		fat_msg(sb, KERN_ERR, "logical sector size too small for device"  in fat_fill_super()
1555 	if (logical_sector_size > sb->s_blocksize) {  in fat_fill_super()
1558 		if (!sb_set_blocksize(sb, logical_sector_size)) {  in fat_fill_super()
1559 			fat_msg(sb, KERN_ERR, "unable to set blocksize %u",  in fat_fill_super()
1565 		bh_resize = sb_bread(sb, 0);  in fat_fill_super()
1567 			fat_msg(sb, KERN_ERR, "unable to read boot sector"  in fat_fill_super()
1569 			       sb->s_blocksize);  in fat_fill_super()
1576 	sbi->cluster_size = sb->s_blocksize * sbi->sec_per_clus;  in fat_fill_super()
1586 	sb->s_maxbytes = 0xffffffff;  in fat_fill_super()
1602 		fsinfo_bh = sb_bread(sb, sbi->fsinfo_sector);  in fat_fill_super()
1604 			fat_msg(sb, KERN_ERR, "bread failed, FSINFO block"  in fat_fill_super()
1611 			fat_msg(sb, KERN_WARNING, "Invalid FSINFO signature: "  in fat_fill_super()
1632 	sbi->dir_per_block = sb->s_blocksize / sizeof(struct msdos_dir_entry);  in fat_fill_super()
1639 			fat_msg(sb, KERN_ERR, "bogus directory-entries per block"  in fat_fill_super()
1645 		* sizeof(struct msdos_dir_entry) / sb->s_blocksize;  in fat_fill_super()
1663 	fat_clusters = calc_fat_clusters(sb);  in fat_fill_super()
1665 	if (total_clusters > MAX_FAT(sb)) {  in fat_fill_super()
1667 			fat_msg(sb, KERN_ERR, "count of clusters too big (%u)",  in fat_fill_super()
1682 	fat_hash_init(sb);  in fat_fill_super()
1683 	dir_hash_init(sb);  in fat_fill_super()
1684 	fat_ent_access_init(sb);  in fat_fill_super()
1698 		fat_msg(sb, KERN_ERR, "codepage %s not found", buf);  in fat_fill_super()
1706 			fat_msg(sb, KERN_ERR, "IO charset %s not found",  in fat_fill_super()
1713 	fat_inode = new_inode(sb);  in fat_fill_super()
1719 	fsinfo_inode = new_inode(sb);  in fat_fill_super()
1726 	root_inode = new_inode(sb);  in fat_fill_super()
1739 	sb->s_root = d_make_root(root_inode);  in fat_fill_super()
1740 	if (!sb->s_root) {  in fat_fill_super()
1741 		fat_msg(sb, KERN_ERR, "get root inode failed");  in fat_fill_super()
1746 		struct request_queue *q = bdev_get_queue(sb->s_bdev);  in fat_fill_super()
1748 			fat_msg(sb, KERN_WARNING,  in fat_fill_super()
1753 	fat_set_state(sb, 1, 0);  in fat_fill_super()
1759 		fat_msg(sb, KERN_INFO, "Can't find a valid FAT filesystem");  in fat_fill_super()
1770 	sb->s_fs_info = NULL;  in fat_fill_super()
1806 int fat_flush_inodes(struct super_block *sb, struct inode *i1, struct inode *i2)  in fat_flush_inodes()  argument
1809 	if (!MSDOS_SB(sb)->options.flush)  in fat_flush_inodes()
1816 		struct address_space *mapping = sb->s_bdev->bd_inode->i_mapping;  in fat_flush_inodes()