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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Hikaru1@verizon.net
Cc: axboe@suse.de, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: PROBLEM: ide-cd in 2.6.8-2.6.10 and 2.4.26-2.4.28 high cpu use with dma
Date: Sun, 09 Jan 2005 23:01:22 +0000	[thread overview]
Message-ID: <1105278277.12004.32.camel@localhost.localdomain> (raw)
In-Reply-To: <20050109123028.GA12753@roll>

On Sul, 2005-01-09 at 12:30, Hikaru1@verizon.net wrote:
> A minor mistake. I forgot to state explicitly that the problem only appears
> with writing audio cds. Writing data cds does not cause problems.

It sets the required alignment of buffers for DMA. The 2.6.10 code is
correct, the question is who is feeding unaligned buffers to the driver
layer - the kernel or the SG layer. Which burning interface are you
using  - /dev/sg  (ie dev=1,0,0) or /dev/hd*  (dev=/dev/hdc etc)



  parent reply	other threads:[~2005-01-10  0:10 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-01-09 10:52 PROBLEM: ide-cd in 2.6.8-2.6.10 and 2.4.26-2.4.28 high cpu use with dma Hikaru1
2005-01-09 10:54 ` Hikaru1
2005-01-09 12:30   ` Hikaru1
2005-01-09 15:32     ` Jens Axboe
2005-01-09 20:47       ` Marcel Sebek
2005-01-10  9:10       ` Hikaru1
2005-01-11  8:25         ` Jens Axboe
2005-01-09 23:01     ` Alan Cox [this message]
2005-01-10  8:45       ` Jens Axboe

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