From mboxrd@z Thu Jan 1 00:00:00 1970 From: jfannin@gmail.com (Joseph Fannin) Subject: Re: Hibernating To Swap Considered Harmful Date: Mon, 16 Jul 2007 01:37:52 -0400 Message-ID: <20070716053751.GA13707@nineveh.local> References: <1184167831.12556.13.camel@caritas-dev.intel.com> <200707131130.51279.rjw@sisk.pl> <20070714004517.GA18336@nineveh.local> <200707141148.18279.rjw@sisk.pl> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <200707141148.18279.rjw@sisk.pl> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-pm-bounces@lists.linux-foundation.org Errors-To: linux-pm-bounces@lists.linux-foundation.org To: "Rafael J. Wysocki" Cc: david@lang.hm, linux-kernel@vger.kernel.org, Joseph Fannin , Pavel Machek , "Huang, Ying" , Andrew Morton , linux-pm@lists.linux-foundation.org, Jeremy Maitin-Shepard List-Id: linux-pm@vger.kernel.org On Sat, Jul 14, 2007 at 11:48:17AM +0200, Rafael J. Wysocki wrote: > On Saturday, 14 July 2007 02:45, Joseph Fannin wrote: > > On Fri, Jul 13, 2007 at 11:30:50AM +0200, Rafael J. Wysocki wrote: > > > On Friday, 13 July 2007 07:42, Joseph Fannin wrote: > > > > On Thu, Jul 12, 2007 at 08:06:43PM -0700, david@lang.hm wrote: > > > > > > If you're afraid of that, use a dedicated swap file. > > > > I don't understand what you mean. A dedicated swap file for what? > > Sorry, I should have been more precise. > > For hibernation (ie. a swap file that you activate right befor the > hibernation). > > Also tuxonice (formerly known as suspend2) allows you to use regular files > hibernation. How is that different from what I proposed, other than the requirement to pass the swap data stuctures between the two kernels? Even if you only expect hibernation to work only _most of the time_, suspending to swap means allocating a bunch of swap space that you intend to never be used as swap. The two functions don't really belong together. -- Joseph Fannin jfannin@gmail.com