linux-kernel - Re: [PATCH 00/33] SG table chaining support

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Message-ID: <yq1d4ysv35d.fsf@sermon.lab.mkp.net>
Date:	Mon, 16 Jul 2007 10:23:10 -0400
From:	"Martin K. Petersen" <martin.petersen@...cle.com>
To:	"John Stoffel" <john@...ffel.org>
Cc:	Jens Axboe <jens.axboe@...cle.com>, linux-kernel@...r.kernel.org,
	linux-scsi@...r.kernel.org
Subject: Re: [PATCH 00/33] SG table chaining support

>>>>> "John" == John Stoffel <john@...ffel.org> writes:

John> Will this help out tape drive performance at all?  I looked
John> through the patches quickly, esp the AIC7xxx stuff since that's
John> what I use, but nothing jumped out at me...

Yes.  Most modern tape drives want a block size of 1MB or higher.
With the old stack we'd be stuck at 512KB because the sg limitations
caused us to come just short of 1MB...

-- 
Martin K. Petersen	Oracle Linux Engineering

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