Subject: Re: page loaning and pagedaemon
To: YAMAMOTO Takashi <>
From: Bill Studenmund <>
List: tech-kern
Date: 12/06/2006 21:40:56
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On Thu, Dec 07, 2006 at 11:19:11AM +0900, YAMAMOTO Takashi wrote:
> > What will be the consequence of this change, other than pdpolicy being=
> > less confusing? i.e. there is some reason loaned pages were treated=20
> > special. Do we no longer need such treatment? Are we achieving the same=
> > goals differently?
> an obvious consequence of the change is that pagedaemon picks up
> ->K loaned pages.  we have choices how to deal with these pages.
> 	1. "pageout" the loaner side of the page by breaking the loan.
> 	   (the page will be freed when it's unloaned.)
> 	2. skip the page, maybe by activating it.
> my patch does #1.
> it shouldn't matter as far as durations of loaning are short.
> it could make differences for eg. a pipe which is rarely read.


Take care,


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