From: Jeff Garzik <jeff@garzik.org>
To: James Bottomley <James.Bottomley@SteelEye.com>
Cc: Ed Lin <ed.lin@promise.com>,
"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
hch <hch@infradead.org>,
linux-kernel <linux-kernel@vger.kernel.org>, akpm <akpm@osdl.org>,
promise_linux <promise_linux@promise.com>
Subject: Re: [PATCH] Promise 'stex' driver
Date: Thu, 20 Jul 2006 20:16:23 -0400 [thread overview]
Message-ID: <44C01CD7.4030308@garzik.org> (raw)
In-Reply-To: <1153439728.4754.19.camel@mulgrave>
James Bottomley wrote:
> On Thu, 2006-07-20 at 17:27 -0400, Jeff Garzik wrote:
>> Since _no individual SCSI driver_ uses the block layer
>> tagging, it is likely that some instability and core kernel
>> development
>> will occur, in order to make that work.
>
> That's not quite true: 53c700 and tmscsim both use it ... I could with
> the usage were wider, but at least 53c700 has pretty regular and
> constant usage ... enough I think to validate the block tag code (it's
> been using it for the last three years).
Not for the case being discussed in this thread, adapter-wide tags.
AFAICS, no file in include/scsi/* or drivers/scsi/* ever calls
blk_queue_init_tags() with a non-NULL third arg.
The block tagging capability being discussed here is poorly validated
due to overall underuse, and its never been used in SCSI AFAIK.
Jeff
next prev parent reply other threads:[~2006-07-21 0:16 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-19 15:07 [PATCH] Promise 'stex' driver Ed Lin
2006-07-20 21:27 ` Jeff Garzik
2006-07-20 23:55 ` James Bottomley
2006-07-21 0:16 ` Jeff Garzik [this message]
2006-07-21 1:07 ` Jens Axboe
2006-07-21 1:25 ` Jeff Garzik
2006-07-21 1:38 ` Jens Axboe
2006-07-21 2:10 ` Jeff Garzik
2006-07-21 2:36 ` Jens Axboe
2006-07-21 3:01 ` Jeff Garzik
2006-07-21 3:18 ` Jens Axboe
2006-07-21 3:52 ` Jeff Garzik
2006-07-21 12:13 ` Jens Axboe
2006-07-23 19:45 ` hch
2006-07-23 20:21 ` Jeff Garzik
2006-07-23 19:44 ` hch
2006-07-21 1:06 ` Jens Axboe
[not found] <NONAMEBFJ3sl3xbYiMC000000d4@nonameb.ptu.promise.com>
2006-07-25 9:26 ` hch
2006-07-26 1:20 ` Alan Cox
2006-07-25 17:30 ` Jeff Garzik
-- strict thread matches above, loose matches on Subject: below --
2006-06-10 16:08 Jeff Garzik
2006-06-10 16:10 ` Christoph Hellwig
2006-06-10 16:29 ` James Bottomley
2006-06-10 16:34 ` Christoph Hellwig
2006-06-10 16:50 ` Jeff Garzik
2006-06-10 17:10 ` Christoph Hellwig
2006-06-10 16:30 ` Jeff Garzik
2006-06-10 17:06 ` Christoph Hellwig
2006-06-10 17:37 ` Jeff Garzik
2006-06-10 18:22 ` James Bottomley
2006-06-10 18:43 ` Jeff Garzik
2006-06-10 22:28 ` Jeff Garzik
2006-06-10 17:47 ` Alexey Dobriyan
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