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Date: Wed, 1 Jul 1998 10:09:05 +0100
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From: "Stephen C. Tweedie" <sct@redhat.com>
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Subject: Re: Thread implementations...
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To: Dean Gaudet <dgaudet-list-linux-kernel@arctic.org>
Cc: "Stephen C. Tweedie" <sct@redhat.com>, "Eric W. Biederman" <ebiederm+eric@npwt.net>, Christoph Rohland <hans-christoph.rohland@sap-ag.de>, linux-kernel@vger.rutgers.edu, linux-mm@kvack.org
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Hi,

On Tue, 30 Jun 1998 12:35:35 -0700 (PDT), Dean Gaudet
<dgaudet-list-linux-kernel@arctic.org> said:

> On Tue, 30 Jun 1998, Stephen C. Tweedie wrote:

>> Not for very large files: the forget-behind is absolutely critical in
>> that case.

> I dunno why you're thinking of unmapping pages though...  But you do
> want them to be dropped from memory when appropriate.

We want to *physically* unmap them from the page tables.  You can't
evict the pages from cache if they are still physically mapped!

--Stephen