From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Linus Torvalds <torvalds@osdl.org>
Cc: Daniel Phillips <phillips@arcor.de>,
James Bottomley <James.Bottomley@SteelEye.com>,
Jamie Lokier <jamie@shareable.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] fix remap of shared read only mappings
Date: Fri, 05 Sep 2003 02:07:09 +0100 [thread overview]
Message-ID: <1062724028.23305.14.camel@dhcp23.swansea.linux.org.uk> (raw)
In-Reply-To: <Pine.LNX.4.44.0309041748290.13736-100000@home.osdl.org>
On Gwe, 2003-09-05 at 01:49, Linus Torvalds wrote:
> What really matters is that mmap() under Linux is 100% coherent, as far as
> the hardware just allows. We haven't taken the easy way out. We shouldn't
> start now.
NFS ?
The problem with OpenGFS is that it is a network file system so
implementing "perfect" shared mmap semantics might actually reduce it
from handy to useless. Right now the worst we have to do is mark pages
uncached in some weird shared map cases, with pages being bounced across
firewire its a bit different.
next prev parent reply other threads:[~2003-09-05 1:08 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-09-04 14:49 James Bottomley
2003-09-04 21:48 ` Jamie Lokier
2003-09-04 22:33 ` James Bottomley
2003-09-04 22:56 ` Jamie Lokier
2003-09-04 23:23 ` James Bottomley
2003-09-04 23:40 ` Jamie Lokier
2003-09-05 0:49 ` Daniel Phillips
2003-09-05 0:49 ` Linus Torvalds
2003-09-05 1:07 ` Alan Cox [this message]
2003-09-05 1:31 ` Daniel Phillips
2003-09-05 4:35 ` Linus Torvalds
2003-09-05 0:52 ` James Bottomley
2003-09-05 1:21 ` Daniel Phillips
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