From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Tue, 22 Nov 2005 10:35:44 +0000 (GMT) From: Mel Gorman Subject: Re: [PATCH 2/5] Light Fragmentation Avoidance V20: 002_usemap In-Reply-To: <20051122102237.GK20775@brahms.suse.de> Message-ID: References: <20051115164946.21980.2026.sendpatchset@skynet.csn.ul.ie> <200511160036.54461.ak@suse.de> <200511160252.05494.ak@suse.de> <4382EF48.1050107@shadowen.org> <20051122102237.GK20775@brahms.suse.de> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Andi Kleen Cc: Andy Whitcroft , linux-mm@kvack.org, mingo@elte.hu, lhms-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, nickpiggin@yahoo.com.au List-ID: On Tue, 22 Nov 2005, Andi Kleen wrote: > > All of that said, I am not even sure we have a bit left in the page > > flags on smaller architectures :/. > > How about > > #define PG_checked 8 /* kill me in 2.5.. */ > > ? > > At least PG_uncached isn't used on many architectures too, so could > be reused. I don't know why those that use it don't check VMAs instead. > PG_unchecked appears to be totally unused. It's only users are the macros that manipulate the bit and mm/page_alloc.c . It appears it has been a long time since it was used to it is a canditate for reuse. -- Mel Gorman Part-time Phd Student Java Applications Developer University of Limerick IBM Dublin Software Lab -- 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