nr_to_be_unused  3352 mm/swapfile.c  	unsigned long nr_to_be_unused = 0;
nr_to_be_unused  3359 mm/swapfile.c  			nr_to_be_unused += si->inuse_pages;
nr_to_be_unused  3361 mm/swapfile.c  	val->freeswap = atomic_long_read(&nr_swap_pages) + nr_to_be_unused;
nr_to_be_unused  3362 mm/swapfile.c  	val->totalswap = total_swap_pages + nr_to_be_unused;