From: "Monty Montgomery" <monty@xiph.org>
To: "Jeff Garzik" <jgarzik@pobox.com>
Cc: "Tejun Heo" <htejun@gmail.com>,
"Brice Goglin" <Brice.Goglin@ens-lyon.org>,
"Jens Axboe" <jens.axboe@oracle.com>,
"Gregor Jasny" <gjasny@googlemail.com>,
"Linux Kernel" <linux-kernel@vger.kernel.org>,
linux-ide@vger.kernel.org, "Douglas Gilbert" <dougg@torque.net>
Subject: Re: 2.6.19-rc3 system freezes when ripping with cdparanoia at ioctl(SG_IO)
Date: Thu, 9 Nov 2006 15:13:19 -0500 [thread overview]
Message-ID: <806dafc20611091213x2a82c5ccs814ceabbf11e2363@mail.gmail.com> (raw)
In-Reply-To: <455337B8.5000902@pobox.com>
On 11/9/06, Jeff Garzik <jgarzik@pobox.com> wrote:
> Mapping 'bidirectional' is a bit difficult.
SGIO_TO_FROM_DEVICE is *not* bdirectional!
>From the header that defines it:
#define SG_DXFER_TO_FROM_DEV -4 /* treated like SG_DXFER_FROM_DEV with the
additional property than during indirect
IO the user buffer is copied into the
kernel buffers before the transfer */
That's pretty darned clear. TO_FROM_DEVICE is a straight-up read.
Why the continuing confusion of what this mode is for?
> Given that there are stupid apps/libs out there in the field with this
> behavior, even if the apps are fixed I think we are stuck with the
> stupidities.
*ahem*
Monty
next prev parent reply other threads:[~2006-11-09 20:14 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-29 19:20 Gregor Jasny
2006-10-29 21:31 ` Ken Moffat
2006-10-29 22:05 ` Brice Goglin
2006-10-30 11:45 ` Jens Axboe
2006-10-30 13:14 ` Gregor Jasny
2006-10-30 13:17 ` Gregor Jasny
2006-10-30 13:27 ` Jens Axboe
2006-11-09 9:46 ` Brice Goglin
2006-11-09 14:00 ` Tejun Heo
2006-11-09 14:14 ` Jeff Garzik
2006-11-09 20:13 ` Monty Montgomery [this message]
2006-11-09 15:50 ` Douglas Gilbert
2006-11-10 10:36 ` Luben Tuikov
2006-11-10 12:58 ` Douglas Gilbert
2006-11-10 20:08 ` Luben Tuikov
2006-11-11 10:46 ` Christoph Hellwig
2006-11-11 16:39 ` Douglas Gilbert
2006-11-11 19:09 ` Luben Tuikov
2006-11-14 22:52 ` Monty Montgomery
2006-11-09 20:09 ` Monty Montgomery
2006-11-09 22:47 ` Tejun Heo
2006-11-10 16:15 ` Jens Axboe
2006-11-10 16:19 ` Brice Goglin
2006-11-10 16:23 ` Jens Axboe
2006-11-14 12:24 ` Brice Goglin
2006-11-14 12:29 ` Jens Axboe
2006-11-14 12:40 ` Brice Goglin
2006-11-14 12:50 ` Jens Axboe
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