From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-la0-f54.google.com (mail-la0-f54.google.com [209.85.215.54]) by kanga.kvack.org (Postfix) with ESMTP id ACAB46B0035 for ; Wed, 13 Aug 2014 17:18:40 -0400 (EDT) Received: by mail-la0-f54.google.com with SMTP id hz20so268045lab.41 for ; Wed, 13 Aug 2014 14:18:39 -0700 (PDT) Received: from mx2.suse.de (cantor2.suse.de. [195.135.220.15]) by mx.google.com with ESMTPS id c2si4645886lac.0.2014.08.13.14.18.38 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 13 Aug 2014 14:18:38 -0700 (PDT) Date: Wed, 13 Aug 2014 22:18:34 +0100 From: Mel Gorman Subject: Re: [PATCH] mm: Actually clear pmd_numa before invalidating Message-ID: <20140813211834.GJ7970@suse.de> References: <1407943707-5547-1-git-send-email-matthew.r.wilcox@intel.com> <20140813125951.7619f8e908eefb99c40827c4@linux-foundation.org> <100D68C7BA14664A8938383216E40DE0407D0CA2@FMSMSX114.amr.corp.intel.com> <20140813131241.3ced5ccaeec24fcd378a1ef6@linux-foundation.org> <100D68C7BA14664A8938383216E40DE0407D0CE2@FMSMSX114.amr.corp.intel.com> <20140813132333.92f2ade49867acbfb9ed696b@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline In-Reply-To: <20140813132333.92f2ade49867acbfb9ed696b@linux-foundation.org> Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton Cc: "Wilcox, Matthew R" , "linux-mm@kvack.org" , Rik van Riel , "stable@vger.kernel.org" On Wed, Aug 13, 2014 at 01:23:33PM -0700, Andrew Morton wrote: > On Wed, 13 Aug 2014 20:16:31 +0000 "Wilcox, Matthew R" wrote: > > > I am quite shockingly ignorant of the MM code. While looking at this > > function to figure out how/whether to use it, I noticed the bug, and > > sent a patch. I assumed the gibberish in the changelog meant something > > important to people who actually understand this part of the kernel :-) > > Fair enough ;) Mel? The issue was theoritical in nature. The patch was meant to guarantee the PTE was in a known state. As I cannot think of a way it could trigger a bug I wouldn't consider it -stable material but Matthew's patch is still doing the expected thing. -- Mel Gorman SUSE Labs -- 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