Re: [RFC] Concept: Active/busy "reverse" mapping

[Benjamin LaHaise <bcrl@redhat.com>]

On Fri, Dec 21, 2001 at 02:05:26AM +0100, Roger Larsson wrote:
> The goal of this code is to make sure that used pages are marked as such.
> 
> This is accomplished by:
> 
> * When a process is descheduled - look in its mm for used pages - update 
> corresponding page. (Done at most once per tick)

Interesting.  The same effect is acheived by the reverse mapping code on 
a global scale while addressing the issue of how to figure out what extent 
memory pressure is needed on the page tables.

		-ben
-- 
Fish.
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