Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752791AbYCLNxe (ORCPT ); Wed, 12 Mar 2008 09:53:34 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750985AbYCLNx1 (ORCPT ); Wed, 12 Mar 2008 09:53:27 -0400 Received: from zux006-051-205.adsl.green.ch ([81.6.51.205]:12206 "EHLO the-village.bc.nu" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751259AbYCLNx0 (ORCPT ); Wed, 12 Mar 2008 09:53:26 -0400 Date: Wed, 12 Mar 2008 13:30:01 +0000 From: Alan Cox To: Benny Amorsen Cc: linux-kernel@vger.kernel.org Subject: Re: [ANNOUNCE] Ramback: faster than a speeding bullet Message-ID: <20080312133001.1668f40d@the-village.bc.nu> In-Reply-To: References: <200803092346.17556.phillips@phunq.net> <200803110450.19390.phillips@phunq.net> <20080311215601.GM23784@marowsky-bree.de> <200803111602.53835.phillips@phunq.net> X-Mailer: Claws Mail 3.2.0 (GTK+ 2.12.5; i386-redhat-linux-gnu) Organization: Red Hat UK Cyf., Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, Y Deyrnas Gyfunol. Cofrestrwyd yng Nghymru a Lloegr o'r rhif cofrestru 3798903 Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 719 Lines: 15 > Everyone who has write cache turned on for their hard drives is > running in a mode similar to ramback anyway (except for when the file > system is set to force writes to the platter, but that is rare). > Admittedly, software crashes rarely cause the write cache to be lost, > but hardware failures do, practically every time. On the contrary - the hard disk cache is managed by the barrier logic in the kernel, and the ordering even on failures is fairly predictable. -- 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/