commit_new

# File lib/pstore.rb, line 364
  def commit_new(f)
    f.truncate(0)
    f.rewind
    new_file = @filename + ".new"
    File.open(new_file, RD_ACCESS) do |nf|
      FileUtils.copy_stream(nf, f)
    end
    File.unlink(new_file)
  end