From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: [2.6.24-rc8-mm1][regression?] numactl --interleave=all doesn't works on memoryless node. From: Lee Schermerhorn In-Reply-To: <20080205143149.GA4207@csn.ul.ie> References: <20080202165054.F491.KOSAKI.MOTOHIRO@jp.fujitsu.com> <20080202090914.GA27723@one.firstfloor.org> <20080202180536.F494.KOSAKI.MOTOHIRO@jp.fujitsu.com> <1202149243.5028.61.camel@localhost> <20080205143149.GA4207@csn.ul.ie> Content-Type: text/plain Date: Tue, 05 Feb 2008 10:23:37 -0500 Message-Id: <1202225017.5332.1.camel@localhost> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Mel Gorman Cc: KOSAKI Motohiro , Andi Kleen , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Andrew Morton , Christoph Lameter , Paul Jackson , David Rientjes List-ID: On Tue, 2008-02-05 at 14:31 +0000, Mel Gorman wrote: > On (04/02/08 13:20), Lee Schermerhorn didst pronounce: > > > > When the kernel behaviour changes and breaks user space then the kernel > > > > is usually wrong. Cc'ed Lee S. who maintains the kernel code now. > > > > The memoryless nodes patch series changed a lot of things, so just > > reverting this one area [mpol_check_policy()] probably won't restore the > > prior behavior. A fully populated node mask is not necessarily a proper > > subset of node_online_map(). And contextualize_policy() also requires > > the mask to be a subset of mems_allowed which also defaults to nodes > > with memory. > > > > I don't know how Mel Gorman's "two zonelist" series, which is still > > awaiting a window into the -mm tree, affects this behavior. Those > > patches will certainly be affected by whatever we decide here. > > > > I doubt they'd make a difference to this particular problem. I didn't really think so, but I wanted to give you a heads up regarding this, as I think it will affect your patches. I'm hoping we'll see them in -mm soon after the .25 merge window closes. If you get there before a fix to this issue, so much the better, IMO :-). Lee > -- 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