From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: Disk spin down issue on shut down/suspend to disk Date: Wed, 08 Aug 2007 11:56:45 +0900 Message-ID: <46B930ED.6040607@gmail.com> References: <1186514618.5622.9.camel@nx6310> <8db1092f0708071309h5cf6f68bo80b44d9a2fbeabeb@mail.gmail.com> <200708072233.52500.rjw@sisk.pl> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Return-path: Received: from qb-out-0506.google.com ([72.14.204.238]:8407 "EHLO qb-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759598AbXHHC55 (ORCPT ); Tue, 7 Aug 2007 22:57:57 -0400 Received: by qb-out-0506.google.com with SMTP id e11so25176qbe for ; Tue, 07 Aug 2007 19:57:55 -0700 (PDT) In-Reply-To: <200708072233.52500.rjw@sisk.pl> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: "Rafael J. Wysocki" Cc: Maciej Rutecki , Michael Sedkowski , trenn@suse.de, Robert Hancock , Henrique de Moraes Holschuh , linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org, linux-acpi@vger.kernel.org Rafael J. Wysocki wrote: > Well, on my box (nx6325) with the appended (experimental) patch applied > on top of 2.6.23-rc1 with the patchset from > http://www.sisk.pl/kernel/hibernation_and_suspend/2.6.23-rc2/patches/ , the > double spin down doesn't occur during hibernation and the system is shut down > notceably faster. Can you please explain what the patch does? So, I take it that entering S4 also spins down the disk. Does the patch remove the ACPI spin down or libata one? -- tejun