From: Christoph Rohland <cr@sap.com>
To: "Stephen C. Tweedie" <sct@redhat.com>
Cc: "Rodrigo S. de Castro" <rcastro@linux.ime.usp.br>, linux-mm@kvack.org
Subject: Re: ptes flags in compressed cache
Date: 27 Oct 2000 09:59:13 +0200 [thread overview]
Message-ID: <m3bsw6vhny.fsf@linux.local> (raw)
In-Reply-To: "Stephen C. Tweedie"'s message of "Thu, 26 Oct 2000 16:58:21 +0100"
"Stephen C. Tweedie" <sct@redhat.com> writes:
> On Thu, Oct 26, 2000 at 01:52:45PM -0200, Rodrigo S. de Castro wrote:
> >
> > I am working on a compressed cache for 2.2.16 and I am
> > currently in a cache with no compression implementation. Well, at this
> > step, I gotta a doubt of how can I mark the pages (actually, ptes)
> > that are in my cache and neither present in memory nor in swap. This
> > is essential when I have a page fault, and this page is not present in
> > memory.
>
> Reserve a SWP_ENTRY for compressed pages. There's precedent for that:
> SHM in 2.2 already uses that mechanism for swapped-out shared memory
> pages.
No, shm does not use a SWP_TYPE. It only pretends to do ;-)
Greetings
Christoph
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prev parent reply other threads:[~2000-10-27 7:59 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-10-26 15:52 ptes flags in compressed cache Rodrigo S. de Castro
2000-10-26 15:58 ` Stephen C. Tweedie
2000-10-27 2:12 ` page fault M.Jagadish Kumar
2000-10-26 19:45 ` afei
2000-10-26 19:53 ` Rik van Riel
2000-10-27 2:14 ` afei
2000-10-27 11:17 ` Stephen C. Tweedie
[not found] ` <8tboe4$3bfb7$1@fido.engr.sgi.com>
2000-10-27 17:38 ` Rajagopal Ananthanarayanan
2000-10-30 12:19 ` volodya
2000-10-27 7:59 ` Christoph Rohland [this message]
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