From: Andrew Morton <akpm@digeo.com>
To: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Cc: alan@lxorguk.ukuu.org.uk, andre@linux-ide.org, axboe@suse.de,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] 2.5.67-ac2 direct-IO for IDE taskfile ioctl (0/4)
Date: Wed, 23 Apr 2003 15:35:00 -0700 [thread overview]
Message-ID: <20030423153500.0d99b4d3.akpm@digeo.com> (raw)
In-Reply-To: <Pine.SOL.4.30.0304231933360.10502-100000@mion.elka.pw.edu.pl>
Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl> wrote:
>
>
> Hey,
>
> Another bunch of patches:
>
> (1) Enhance bio_(un)map_user() and add blk_rq_bio_prep().
> (2) Pass bdev to IDE ioctl handlers.
> (3) Add support for rq->bio based taskfile.
> (4) Use direct-IO in ide_taskfile_ioctl() and in ide_cmd_ioctl().
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?
Thanks.
next prev parent reply other threads:[~2003-04-23 22:25 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 ` Andrew Morton [this message]
2003-04-23 22:09 ` [PATCH] 2.5.67-ac2 direct-IO for IDE taskfile ioctl (0/4) Alan Cox
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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