On Fri, Jul 29, 2016 at 12:25:40PM +0900, Minchan Kim wrote:

Every swap-in anonymous page starts from inactive lru list's head.
It should be activated unconditionally when VM decide to reclaim
because page table entry for the page always usually has marked
accessed bit. Thus, their window size for getting a new referece
is 2 * NR_inactive + NR_active while others is NR_active + NR_active.

                                                 NR_inactive

typo

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