From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx2.suse.de (cantor2.suse.de [195.135.220.15]) (using TLSv1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id F12E91A078D for ; Fri, 13 Mar 2015 05:49:36 +1100 (AEDT) Date: Thu, 12 Mar 2015 18:49:26 +0000 From: Mel Gorman To: Linus Torvalds Subject: Re: [PATCH 4/4] mm: numa: Slow PTE scan rate if migration failures occur Message-ID: <20150312184925.GH3406@suse.de> References: <20150307163657.GA9702@gmail.com> <20150308100223.GC15487@gmail.com> <20150309112936.GD26657@destitution> <20150309191943.GF26657@destitution> <20150312131045.GE3406@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 In-Reply-To: Cc: Dave Chinner , Linux Kernel Mailing List , xfs@oss.sgi.com, Linux-MM , Aneesh Kumar , Andrew Morton , ppc-dev , Ingo Molnar List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Thu, Mar 12, 2015 at 09:20:36AM -0700, Linus Torvalds wrote: > On Thu, Mar 12, 2015 at 6:10 AM, Mel Gorman wrote: > > > > I believe you're correct and it matches what was observed. I'm still > > travelling and wireless is dirt but managed to queue a test using pmd_dirty > > Ok, thanks. > > I'm not entirely happy with that change, and I suspect the whole > heuristic should be looked at much more (maybe it should also look at > whether it's executable, for example), but it's a step in the right > direction. > I can follow up when I'm back in work properly. As you have already pulled this in directly, can you also consider pulling in "mm: thp: return the correct value for change_huge_pmd" please? The other two patches were very minor can be resent through the normal paths later.