linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
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.

  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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20030423153500.0d99b4d3.akpm@digeo.com \
    --to=akpm@digeo.com \
    --cc=B.Zolnierkiewicz@elka.pw.edu.pl \
    --cc=alan@lxorguk.ukuu.org.uk \
    --cc=andre@linux-ide.org \
    --cc=axboe@suse.de \
    --cc=linux-kernel@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).