def supplement_filesystem(old_size, user_cap=False):
new_size = old_size<EOL>if user_cap:<EOL><INDENT>if old_size <= _GiB_to_Byte(<NUM_LIT>):<EOL><INDENT>new_size = _GiB_to_Byte(<NUM_LIT:3>)<EOL><DEDENT>else:<EOL><INDENT>new_size += _GiB_to_Byte(<NUM_LIT>)<EOL><DEDENT><DEDENT>return int(new_size)<EOL>
Return new size accounting for the metadata.