Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753400AbZDFFsU (ORCPT ); Mon, 6 Apr 2009 01:48:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752090AbZDFFsI (ORCPT ); Mon, 6 Apr 2009 01:48:08 -0400 Received: from srv5.dvmed.net ([207.36.208.214]:40537 "EHLO mail.dvmed.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751872AbZDFFsH (ORCPT ); Mon, 6 Apr 2009 01:48:07 -0400 Message-ID: <49D99775.9030104@garzik.org> Date: Mon, 06 Apr 2009 01:47:33 -0400 From: Jeff Garzik User-Agent: Thunderbird 2.0.0.21 (X11/20090320) MIME-Version: 1.0 To: Arjan van de Ven CC: Mark Lord , Linus Torvalds , Theodore Tso , Jens Axboe , Linux Kernel Developers List , Ext4 Developers List Subject: Re: [GIT PULL] Ext3 latency fixes References: <20090404135719.GA9812@mit.edu> <20090404151649.GE5178@kernel.dk> <20090404173412.GF5178@kernel.dk> <20090404180108.GH5178@kernel.dk> <20090404232222.GA7480@mit.edu> <20090404163349.20df1208@infradead.org> <20090405001005.GA7553@mit.edu> <49D8E71F.6000703@rtr.ca> <49D91B31.90300@garzik.org> <20090405164831.7ad01c20@infradead.org> In-Reply-To: <20090405164831.7ad01c20@infradead.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: -4.4 (----) X-Spam-Report: SpamAssassin version 3.2.5 on srv5.dvmed.net summary: Content analysis details: (-4.4 points, 5.0 required) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 805 Lines: 24 Arjan van de Ven wrote: > On Sun, 05 Apr 2009 16:57:21 -0400 > Jeff Garzik 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... A -new- industry standard. You can certainly create a compliant SSD while only conforming to ATA-7, for example. Some older IDE flash devices pretend they are normal hard drives in almost every respect, too. Jeff -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/