From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261597AbUEQQw7 (ORCPT ); Mon, 17 May 2004 12:52:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261914AbUEQQw6 (ORCPT ); Mon, 17 May 2004 12:52:58 -0400 Received: from mx1.redhat.com ([66.187.233.31]:2965 "EHLO mx1.redhat.com") by vger.kernel.org with ESMTP id S261597AbUEQQw4 (ORCPT ); Mon, 17 May 2004 12:52:56 -0400 Date: Mon, 17 May 2004 12:52:35 -0400 From: Alan Cox To: Rene Herman Cc: Bartlomiej Zolnierkiewicz , Alan Cox , linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org, Andrew Morton , "Eric D. Mudama" , Jens Axboe Subject: Re: [RFT][PATCH] ide-disk.c: more write cache fixes Message-ID: <20040517165235.GD15849@devserv.devel.redhat.com> References: <200405132116.44201.bzolnier@elka.pw.edu.pl> <40A4B482.3040706@keyaccess.nl> <20040516195811.GH20505@devserv.devel.redhat.com> <200405162220.23971.bzolnier@elka.pw.edu.pl> <40A7D9E6.1090900@keyaccess.nl> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <40A7D9E6.1090900@keyaccess.nl> User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sun, May 16, 2004 at 11:15:18PM +0200, Rene Herman wrote: > Alan, if you know, that drive fails ide_id_has_flush_cache()? It does. I'm getting confusing results so I need to work out what is up. > Note, very aware I don't know what the fuck I'm doing here (and equally > aware I don't _want_ to be here :-) Having the drive spin down on each > reboot is totally unacceptable though. Not only does spinning up again > take significant time and noise, it's also actively bad for the drive. I'd guess that the laptop may power off the drive during the reboot cycle. If so then your suggestion makes sense