From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: David Woodhouse <dwmw2@infradead.org>
Cc: Greg Ungerer <gerg@snapgear.com>,
linux-kernel@vger.kernel.org,
David McCullough <davidm@snapgear.com>
Subject: Re: [PATCH]: uClinux (MMU-less) patches against 2.5.28
Date: 26 Jul 2002 15:50:29 +0100 [thread overview]
Message-ID: <1027695029.13428.45.camel@irongate.swansea.linux.org.uk> (raw)
In-Reply-To: <12441.1027677534@redhat.com>
On Fri, 2002-07-26 at 10:58, David Woodhouse wrote:
>
> alan@lxorguk.ukuu.org.uk said:
> > Now consider two events each locking the page the other wishes to
> > write to. At that point you may want to stop digging any deeper holes
>
> Maybe, but only if we can come up with a better alternative.
>
> Bear in mind that XIP is not for general-purpose use, and strict
> restrictions on what you can do with it are not unreasonable. Assume we
> remove O_DIRECT support entirely from any kernel which supports XIP. Then
> what breaks?
Anything where you rely on locking the pages and can get a loop of
locked/absent pages and deadlock
next prev parent reply other threads:[~2002-07-26 13:33 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-07-25 6:56 Greg Ungerer
2002-07-25 14:52 ` David Woodhouse
2002-07-26 0:08 ` Greg Ungerer
2002-07-26 1:20 ` Greg Ungerer
2002-07-26 8:19 ` David Woodhouse
2002-07-26 9:39 ` David Woodhouse
2002-07-26 9:58 ` David Woodhouse
2002-07-26 14:03 ` David Woodhouse
2002-07-26 16:01 ` David Woodhouse
2002-07-26 16:27 ` David Woodhouse
2002-07-26 17:27 ` Alan Cox
2002-07-26 17:11 ` Alan Cox
2002-07-26 14:50 ` Alan Cox [this message]
2002-07-26 10:56 ` Alan Cox
2002-07-26 10:39 ` Alan Cox
2002-07-26 15:08 ` gerg
2002-07-26 15:45 ` David Woodhouse
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