linux-kernel - Re: SCSI TMF processing; tag allocation

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Date:	Mon, 15 Nov 2010 14:40:29 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	James Bottomley <James.Bottomley@...senPartnership.com>
Cc:	Jens Axboe <jaxboe@...ionio.com>, Matthew Wilcox <matthew@....cx>,
	Luben Tuikov <ltuikov@...oo.com>, Greg KH <greg@...ah.com>,
	"linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"tj@...nel.org" <tj@...nel.org>
Subject: Re: SCSI TMF processing; tag allocation

> Realistically, tag starvation isn't really a problem.  It was a known
> issue for 80s era hardware.  I've got some of the oldest drives on the
> planet and I didn't see a problem when the clock algorithm was removed
> from 53c700.

I'm not entirely sure that is the case at least for some early NCQ
capable ATA drives 8(
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