Second Chance
	• Maintain FIFO page list • On page fault, check reference bit • If R == 1 then move page to end of list and clear R • If R == 0 then evict page • I.e., a page has to move to top of list at least twice • I.e., once after the last time R-bit was cleared • Disadvantage • Moves pages around on list a lot (bookkeeping overhead)