From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Rafael J. Wysocki" Subject: Re: Remove page flags for software suspend Date: Thu, 1 Mar 2007 16:33:54 +0100 References: <200702281813.04643.rjw@sisk.pl> <45E6EEC5.4060902@yahoo.com.au> In-Reply-To: <45E6EEC5.4060902@yahoo.com.au> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-15" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200703011633.54625.rjw@sisk.pl> Sender: owner-linux-mm@kvack.org Return-Path: To: Nick Piggin Cc: Christoph Lameter , Pavel Machek , linux-mm@kvack.org List-ID: On Thursday, 1 March 2007 16:18, Nick Piggin wrote: > Rafael J. Wysocki wrote: > > On Wednesday, 28 February 2007 16:25, Christoph Lameter wrote: > > > >>On Wed, 28 Feb 2007, Pavel Machek wrote: > >> > >> > >>>I... actually do not like that patch. It adds code... at little or no > >>>benefit. > >> > >>We are looking into saving page flags since we are running out. The two > >>page flags used by software suspend are rarely needed and should be taken > >>out of the flags. If you can do it a different way then please do. > > > > > > As I have already said for a couple of times, I think we can and I'm going to > > do it, but right now I'm a bit busy with other things that I consider as more > > urgent. > > I need one bit for lockless pagecache ;) > > Anyway, I guess if you want something done you have to do it yourself. > > This patch still needs work (and I don't know if it even works, because > I can't make swsusp resume even on a vanilla kernel). But this is my > WIP for removing swsusp page flags. > > This patch adds a simple extent based nosave region tracker, and > rearranges some of the snapshot code to be a bit simpler and more > amenable to having dynamically allocated flags (they aren't actually > dynamically allocated in this patch, however). Thanks for the patch. Probably I'd like to do some things in a different way, I'll think about that later today. I hope I'll have a working patch that removes the "offending" page flags after the weekend. Greetings, Rafael -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org