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Date: Sun, 05 Apr 2009 22:32:23 -0400
From: Mark Lord <lkml@rtr.ca>
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To: Arjan van de Ven <arjan@infradead.org>
Cc: Jeff Garzik <jeff@garzik.org>,
       Linus Torvalds <torvalds@linux-foundation.org>,
       Theodore Tso <tytso@mit.edu>, Jens Axboe <jens.axboe@oracle.com>,
       Linux Kernel Developers List <linux-kernel@vger.kernel.org>,
       Ext4 Developers List <linux-ext4@vger.kernel.org>
Subject: Re: [GIT PULL] Ext3 latency fixes
References: <alpine.LFD.2.00.0904031150190.4015@localhost.localdomain>	<alpine.LFD.2.00.0904031329410.7007@localhost.localdomain>	<20090404135719.GA9812@mit.edu>	<20090404151649.GE5178@kernel.dk>	<alpine.LFD.2.00.0904040854470.3915@localhost.localdomain>	<20090404173412.GF5178@kernel.dk>	<alpine.LFD.2.00.0904041039230.3915@localhost.localdomain>	<20090404180108.GH5178@kernel.dk>	<20090404232222.GA7480@mit.edu>	<20090404163349.20df1208@infradead.org>	<20090405001005.GA7553@mit.edu>	<alpine.LFD.2.00.0904050927580.4023@localhost.localdomain>	<49D8E71F.6000703@rtr.ca>	<49D91B31.90300@garzik.org> <20090405164831.7ad01c20@infradead.org>
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Arjan van de Ven wrote:
> On Sun, 05 Apr 2009 16:57:21 -0400
> Jeff Garzik <jeff@garzik.org> wrote:
>> We set it in libata-scsi.c:ata_scsi_dev_config() based on
>> ata_id_is_ssd()
>>
>> That hueristic probably assumes Intel SSDs or something :/
> 
> you mean the "rpm" set to '1' ?
> I was pretty sure that that was industry standard...
.. 

Or even set to zero.  I just don't recall seeing the RPM
reported by hdparm-9.12 for Jeff's SSD.

Cheers