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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Andrew Morton <akpm@digeo.com>
Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>,
	Andre Hedrick <andre@linux-ide.org>,
	axboe@suse.de,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] 2.5.67-ac2 direct-IO for IDE taskfile ioctl (0/4)
Date: 23 Apr 2003 23:09:47 +0100	[thread overview]
Message-ID: <1051135786.2064.98.camel@dhcp22.swansea.linux.org.uk> (raw)
In-Reply-To: <20030423153500.0d99b4d3.akpm@digeo.com>

On Mer, 2003-04-23 at 23:35, Andrew Morton wrote:
> Dumb question: what does all this code actually do?
> 
> It appears to be implementing an IDE-specific ioctl() which performs bulk
> IO direct to/from userspace.  But that seems to be equivalent to O_DIRECT
> access to /dev/hda.
> 
> What is special about the IDE ioctl approach?

Think /dev/sg at the ATA level



  reply	other threads:[~2003-04-23 22:56 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-04-23 17:37 [PATCH] 2.5.67-ac2 direct-IO for IDE taskfile ioctl (0/4) Bartlomiej Zolnierkiewicz
2003-04-23 17:38 ` [PATCH] 2.5.67-ac2 direct-IO for IDE taskfile ioctl (1/4) Bartlomiej Zolnierkiewicz
2003-04-24  8:23   ` Jens Axboe
2003-04-24 14:46     ` Bartlomiej Zolnierkiewicz
2003-04-24 15:47     ` [PATCH] 2.5.68 fix mismatched access_ok() checks in sg_io() Bartlomiej Zolnierkiewicz
2003-04-24 17:31       ` Jens Axboe
2003-04-23 17:39 ` [PATCH] 2.5.67-ac2 direct-IO for IDE taskfile ioctl (2/4) Bartlomiej Zolnierkiewicz
2003-04-23 17:39 ` [PATCH] 2.5.67-ac2 direct-IO for IDE taskfile ioctl (3/4) Bartlomiej Zolnierkiewicz
2003-04-23 17:40 ` [PATCH] 2.5.67-ac2 direct-IO for IDE taskfile ioctl (4/4) Bartlomiej Zolnierkiewicz
2003-04-24  7:56   ` Jens Axboe
2003-04-23 18:24 ` [PATCH] 2.5.67-ac2 direct-IO for IDE taskfile ioctl (0/4) [resend] Bartlomiej Zolnierkiewicz
2003-04-23 22:35 ` [PATCH] 2.5.67-ac2 direct-IO for IDE taskfile ioctl (0/4) Andrew Morton
2003-04-23 22:09   ` Alan Cox [this message]
2003-04-23 22:58   ` Bartlomiej Zolnierkiewicz
2003-04-23 23:13   ` Andries Brouwer
2003-04-23 23:20     ` Andrew Morton
2003-04-24  0:02       ` Bartlomiej Zolnierkiewicz
2003-04-24  6:55         ` Jens Axboe
2003-04-24  2:27       ` Andre Hedrick

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