From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <447D80ED.7070403@yahoo.com.au> Date: Wed, 31 May 2006 21:41:33 +1000 From: Nick Piggin MIME-Version: 1.0 Subject: Re: [stable] [PATCH 0/2] Zone boundary alignment fixes, default configuration References: <447173EF.9090000@shadowen.org> <20060531001322.GJ18769@moss.sous-sol.org> In-Reply-To: <20060531001322.GJ18769@moss.sous-sol.org> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Chris Wright Cc: Andy Whitcroft , Andrew Morton , Mel Gorman , stable@kernel.org, Linux Memory Management List-ID: Chris Wright wrote: > * Andy Whitcroft (apw@shadowen.org) wrote: > >>I think a concensus is forming that the checks for merging across >>zones were removed from the buddy allocator without anyone noticing. >>So I propose that the configuration option UNALIGNED_ZONE_BOUNDARIES >>default to on, and those architectures which have been auditied >>for alignment may turn it off. > > > So what's the final outcome here for -stable? The only > relevant patch upstream appears to be Bob Picco's patch I think you need zone checks? [ ie. page_zone(page) == page_zone(buddy) ] I had assumed Andy was going to do a patch for that. -- SUSE Labs, Novell Inc. Send instant messages to your online friends http://au.messenger.yahoo.com -- 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