affs_checksum_block
extern u32 affs_checksum_block(struct super_block *sb, struct buffer_head *bh);
if (affs_checksum_block(sb, bh)) {
((__be32 *)bh->b_data)[0] = cpu_to_be32(-affs_checksum_block(sb, bh));
if (affs_checksum_block(sb, bh) || be32_to_cpu(AFFS_HEAD(bh)->ptype) != T_SHORT) {
if (!affs_checksum_block(sb, root_bh) &&