Re: MM patches against 2.5.31

From: Rik van Riel (riel@conectiva.com.br)
Date: Mon Aug 26 2002 - 14:28:13 EST

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On Mon, 26 Aug 2002, Linus Torvalds wrote:

> If you do this, then I would personally suggest a conceptually different
> approach: make the LRU list count towards the page count. That will
> _automatically_ result in what you describe - if a page is on the LRU
> list, then "freeing" it will always just decrement the count, and the
> _real_ free comes from walking the LRU list and considering count==1 to
> be trivially freeable.

We can turn these into per-cpu "garbage collect" LRUs, if
we're holding the lock anyway when we decrement the count
we can move the page to a place where it can be found
easily.

regards,

Rik

-- Bravely reimplemented by the knights who say "NIH".

http://www.surriel.com/ http://distro.conectiva.com/

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