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From: Con Kolivas <kernel@kolivas.org>
To: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Andrew Morton <akpm@osdl.org>,
	linux-mm@kvack.org, ck@vds.kolivas.org, pj@sgi.com,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm: Implement Swap Prefetching v23
Date: Fri, 10 Feb 2006 15:14:39 +1100	[thread overview]
Message-ID: <200602101514.40140.kernel@kolivas.org> (raw)
In-Reply-To: <43EC1164.4000605@yahoo.com.au>

On Friday 10 February 2006 15:07, Nick Piggin wrote:
> Con Kolivas wrote:
> > On Friday 10 February 2006 14:25, Andrew Morton wrote:
> >>But where does it put the pages?  If it was really "free", they'd go onto
> >>the tail of the inactive list.
> >
> > It puts them in swapcache. This seems to work nicely as a nowhere-land
> > place where they don't have much affect on anything until we need them or
> > need more ram. This has worked well, but I'm open to other suggestions.
>
> Well they go on the head of the inactive list and will kick out file
> backed pagecache. Which was my concern about reducing the usefulness
> of useful swapping on desktop systems.

Ok I see. We don't have a way to add to the tail of that list though? Is that 
a worthwhile addition to this (ever growing) project? That would definitely 
have an impact on the other code if not all done within swap_prefetch.c.. 
which would also be quite a large open coded something.

Cheers,
Con

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  reply	other threads:[~2006-02-10  4:14 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-02-10  2:55 Con Kolivas
2006-02-10  3:25 ` Andrew Morton
2006-02-10  3:49   ` Con Kolivas
2006-02-10  4:07     ` Nick Piggin
2006-02-10  4:14       ` Con Kolivas [this message]
2006-02-10  4:17         ` Nick Piggin
2006-02-10  4:25         ` Andrew Morton
2006-02-10  4:45           ` Nick Piggin
2006-02-10  4:55             ` Andrew Morton
2006-02-10  5:01               ` Nick Piggin
2006-02-10  5:26                 ` Con Kolivas
2006-02-10  5:32                   ` Nick Piggin
2006-02-10  5:37                     ` Con Kolivas
2006-02-10  5:43                       ` Nick Piggin
2006-02-10  5:48                         ` Con Kolivas

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