int enough_swap(unsigned nr_pages)
int enough_swap(unsigned int nr_pages)
int enough_swap(unsigned nr_pages){	struct sysinfo i;	si_swapinfo(&i);	pr_debug("swsusp: available swap: %lu pages\n", i.freeswap);	return i.freeswap > (nr_pages + PAGES_FOR_IO +		(nr_pages + PBES_PER_PAGE - 1) / PBES_PER_PAGE);}