On Mon, 2016-06-06 at 15:48 -0400, Johannes Weiner wrote:

Currently, scan pressure between the anon and file LRU lists is
balanced based on a mixture of reclaim efficiency and a somewhat
vague
notion of "value" of having certain pages in memory over others. That
concept of value is problematic, because it has caused us to count
any
event that remotely makes one LRU list more or less preferrable for
reclaim, even when these events are not directly comparable to each
other and impose very different costs on the system - such as a
referenced file page that we still deactivate and a referenced
anonymous page that we actually rotate back to the head of the list.

Well, patches 7-10 answered my question on patch 6 :)

I like this design.

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