linux-kernel - Re: "Fix ATAPI transfer lengths" causes CD writing regression

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Message-ID: <20071101105335.1f20bab3@the-village.bc.nu>
Date:	Thu, 1 Nov 2007 10:53:35 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Jeff Garzik <jeff@...zik.org>
Cc:	Jens Axboe <jens.axboe@...cle.com>, Daniel Drake <dsd@...too.org>,
	linux list <linux-kernel@...r.kernel.org>,
	linux-ide@...r.kernel.org, Tejun Heo <htejun@...il.com>,
	Albert Lee <albertcc@...ibm.com>
Subject: Re: "Fix ATAPI transfer lengths" causes CD writing regression

> demonstrated by (a) Alan's patch did not change DMA lbam/lbah 
> programming and (b) Daniel's report of the message "ata2.00: 66 bytes 

(a) did. Well the original did, dunno about your version.

> I am not drawing any conclusions yet, but I'm thinking that blimit=8k 
> may be a better choice for SATA ATAPI.

Only if your transfer is actually 8K or more.


Alan
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