FPM_MULTIPLIER
pblewanted > (512 * FPM_MULTIPLIER * sd_diff)) {
pblewanted -= 256 * FPM_MULTIPLIER * sd_diff;
} else if (pblewanted > 100 * FPM_MULTIPLIER) {
pblewanted -= 10 * FPM_MULTIPLIER;
} else if (pblewanted > 16 * FPM_MULTIPLIER) {
pblewanted -= FPM_MULTIPLIER;
if (mrwanted > FPM_MULTIPLIER)
mrwanted -= FPM_MULTIPLIER;
pblewanted += (max_sds - sd_needed) * 256 * FPM_MULTIPLIER;