Merge "Avoid too much reserved_size for erofs image"

            mount_point, total_blocks, used_blocks, headroom_blocks,

            adjusted_blocks))

def CalculateSizeAndReserved(prop_dict, size):

  fs_type = prop_dict.get("fs_type", "")

  partition_headroom = int(prop_dict.get("partition_headroom", 0))

  # If not specified, give us 16MB margin for GetDiskUsage error ...

  reserved_size = int(prop_dict.get("partition_reserved_size", BYTES_IN_MB * 16))

  if fs_type == "erofs":

    reserved_size = int(prop_dict.get("partition_reserved_size", 0))

    if reserved_size == 0:

      # give .3% margin or a minimum size for AVB footer

      return max(size * 1003 // 1000, 256 * 1024)

  if fs_type.startswith("ext4") and partition_headroom > reserved_size:

    reserved_size = partition_headroom

  return size + reserved_size

def BuildImageMkfs(in_dir, prop_dict, out_file, target_out, fs_config):

  """Builds a pure image for the files under in_dir and writes it to out_file.

      size = GetDiskUsage(in_dir)

    logger.info(

        "The tree size of %s is %d MB.", in_dir, size // BYTES_IN_MB)

    # If not specified, give us 16MB margin for GetDiskUsage error ...

    reserved_size = int(prop_dict.get("partition_reserved_size", BYTES_IN_MB * 16))

    partition_headroom = int(prop_dict.get("partition_headroom", 0))

    if fs_type.startswith("ext4") and partition_headroom > reserved_size:

      reserved_size = partition_headroom

    size += reserved_size

    size = CalculateSizeAndReserved(prop_dict, size)

    # Round this up to a multiple of 4K so that avbtool works

    size = common.RoundUpTo4K(size)

    if fs_type.startswith("ext"):