From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail6.bemta7.messagelabs.com (mail6.bemta7.messagelabs.com [216.82.255.55]) by kanga.kvack.org (Postfix) with ESMTP id 368C56B0169 for ; Mon, 25 Jul 2011 16:52:52 -0400 (EDT) Date: Mon, 25 Jul 2011 13:52:49 -0700 From: Andi Kleen Subject: Re: [patch 1/5] mm: page_alloc: increase __GFP_BITS_SHIFT to include __GFP_OTHER_NODE Message-ID: <20110725205249.GB21691@tassilo.jf.intel.com> References: <1311625159-13771-1-git-send-email-jweiner@redhat.com> <1311625159-13771-2-git-send-email-jweiner@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1311625159-13771-2-git-send-email-jweiner@redhat.com> Sender: owner-linux-mm@kvack.org List-ID: To: Johannes Weiner Cc: linux-mm@kvack.org, Dave Chinner , Christoph Hellwig , Mel Gorman , Andrew Morton , Wu Fengguang , Rik van Riel , Minchan Kim , Jan Kara , linux-kernel@vger.kernel.org On Mon, Jul 25, 2011 at 10:19:15PM +0200, Johannes Weiner wrote: > From: Johannes Weiner > > __GFP_OTHER_NODE is used for NUMA allocations on behalf of other > nodes. It's supposed to be passed through from the page allocator to > zone_statistics(), but it never gets there as gfp_allowed_mask is not > wide enough and masks out the flag early in the allocation path. > > The result is an accounting glitch where successful NUMA allocations > by-agent are not properly attributed as local. > > Increase __GFP_BITS_SHIFT so that it includes __GFP_OTHER_NODE. > > Signed-off-by: Johannes Weiner Acked-by: Andi Kleen -Andi -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org