/* Swaps a page in from disk */
void page_swap_in(int i)
{
  int disk_sector = get_disk_sector(&page_map[i]);

  int block_count = SECTORS_PER_PAGE;

  if ((disk_sector + SECTORS_PER_PAGE) > (page_map[i].swap_loc + page_map[i].swap_size)) {
    block_count = page_map[i].swap_size - disk_sector + page_map[i].swap_loc;
  }

  scsi_read(disk_sector, block_count, (char*)get_page_address(i));
}