From: ralf@uni-koblenz.de
To: "Stephen C. Tweedie" <sct@redhat.com>,
"Paul R. Wilson" <wilson@cs.utexas.edu>
Cc: linux-mm@kvack.org
Subject: Re: question about try_to_swap_out()
Date: Thu, 14 Jan 1999 11:15:49 +0100 [thread overview]
Message-ID: <19990114111549.E466@uni-koblenz.de> (raw)
In-Reply-To: <199901121814.SAA11098@dax.scot.redhat.com>; from Stephen C. Tweedie on Tue, Jan 12, 1999 at 06:14:49PM +0000
On Tue, Jan 12, 1999 at 06:14:49PM +0000, Stephen C. Tweedie wrote:
> On Tue, 12 Jan 1999 10:58:52 -0600, "Paul R. Wilson"
> <wilson@cs.utexas.edu> said:
>
> > I would think that it could be significant if you're skipping DMA
> > pages, which are valuable. You want to get them back in a timely
> > manner, so you want to go ahead and age them normally.
>
> We don't ever do that. We can _require_ a DMA allocation, but we never
> explicitly avoid allocating DMA pages.
Which is a problem for certain machines which have distinct pools of DMA-able
memory and memory for normal use by the processor.
Ralf
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next prev parent reply other threads:[~1999-01-14 14:04 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-01-12 16:58 Paul R. Wilson
1999-01-12 18:14 ` Stephen C. Tweedie
1999-01-14 10:15 ` ralf [this message]
-- strict thread matches above, loose matches on Subject: below --
1999-01-12 18:42 Paul R. Wilson
1999-01-11 3:38 Paul R. Wilson
1999-01-12 16:10 ` Stephen C. Tweedie
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