block_to_cpu
minix_free_block(inode, block_to_cpu(branch[i].key));
minix_free_block(inode, block_to_cpu(where[i].key));
map_bh(bh, inode->i_sb, block_to_cpu(chain[depth-1].key));
nr = block_to_cpu(*p);
nr = block_to_cpu(*p);
bh = sb_bread(sb, block_to_cpu(p->key));