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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: mcelrath+linux@draal.physics.wisc.edu (Bob McElrath)
Cc: alan@lxorguk.ukuu.org.uk (Alan Cox),
	ingo.oeser@informatik.tu-chemnitz.de (Ingo Oeser),
	linux-kernel@vger.kernel.org
Subject: Re: Editing-in-place of a large file
Date: Mon, 3 Sep 2001 15:54:28 +0100 (BST)	[thread overview]
Message-ID: <E15dv7M-0001po-00@the-village.bc.nu> (raw)
In-Reply-To: <20010903094636.V23180@draal.physics.wisc.edu> from "Bob McElrath" at Sep 03, 2001 09:46:36 AM

> Sounds like a possibility for the kernel to me.  As with most things,

But you have it backwards - things are not "could go in the kernel" things
are "could avoid being in kernel"

> passed around as a target for the video device, a source for a userspace
> program, and a source for DMA to disk)  They also have some special
> flags:
>     fcentl(fd, F_SETFL, FDIRECT); /* enables direct disk access */
>     open(filename, O_DIRECT);     /* likewise */
> See this page for details:
>     http://reality.sgi.com/cpirazzi_engr/lg/uv/disk.html

Andrea has this working on 2.4 + patches


  reply	other threads:[~2001-09-03 14:51 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-09-02 20:21 Editing-in-place of a large file Bob McElrath
2001-09-02 21:28 ` COW fs (Re: Editing-in-place of a large file) VDA
2001-09-09 14:46   ` John Ripley
2001-09-09 16:30     ` John Ripley
2001-09-10  2:43       ` Daniel Phillips
2001-09-10  2:58         ` David Lang
2001-09-09 17:41     ` Xavier Bestel
2001-09-10  1:29       ` John Ripley
2001-09-10  6:45         ` Ragnar Kjørstad
2001-09-14 10:06         ` Pavel Machek
2001-09-10 11:11       ` Ihar Filipau
2001-09-10 16:10         ` Kari Hurtta
2001-09-14 10:03     ` Pavel Machek
2001-09-10  9:28   ` VDA
2001-09-10  9:35     ` John P. Looney
2001-09-02 21:30 ` Editing-in-place of a large file Ingo Oeser
2001-09-03  0:59   ` Larry McVoy
2001-09-03  1:24     ` Ingo Oeser
2001-09-03  1:31       ` Alan Cox
2001-09-03  1:50         ` Ingo Oeser
2001-09-03 10:48           ` Alan Cox
2001-09-03 14:31             ` Daniel Phillips
2001-09-03 14:46             ` Bob McElrath
2001-09-03 14:54               ` Alan Cox [this message]
2001-09-03 15:42                 ` Doug McNaught
2001-09-03 15:11               ` Richard Guenther
2001-09-03 21:19             ` Ben Ford
2001-09-03  4:27       ` Bob McElrath
2001-09-03  1:30     ` Daniel Phillips

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