* MinChan Kim [off-list ref] [2011-01-28 16:24:19]:

quoted

But the assumption for LRU order to change happens only if the page
cannot be successfully freed, which means it is in some way active..
and needs to be moved no?

1. holded page by someone
2. mapped pages
3. active pages

1 is rare so it isn't the problem.
Of course, in case of 3, we have to activate it so no problem.
The problem is 2.

2 is a problem, but due to the size aspects not a big one. Like you
said even lumpy reclaim affects it. May be the reclaim code could
honour may_unmap much earlier. 

-- 
	Three Cheers,
	Balbir

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