Received: by 2002:a05:6a10:16a7:0:0:0:0 with SMTP id gp39csp4247206pxb; Tue, 17 Nov 2020 15:46:03 -0800 (PST) X-Google-Smtp-Source: ABdhPJyEL//ECk5gSD7pDu7lMQ9X1c73LAQI/2dgrTh8MaWIcVyyyycTJ4h3k1C9Ja1BArJoun2M X-Received: by 2002:a05:6402:783:: with SMTP id d3mr23641699edy.168.1605656763715; Tue, 17 Nov 2020 15:46:03 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1605656763; cv=none; d=google.com; s=arc-20160816; b=bA2dFkIfdKpYolgJYH0jLZU+O+3ziQqfwNIRXXkXe6DnI+ZtOIbhnIzV7U7bQzy7BS eNucRLl4QVJMcDUyXZ8ASdEA1+r4u5bBCjuysUKOkZIFGa2nilFiMj9iQxcdP+ghUnEV X+FdwBctU6aM92eyu/T9oK/8W9Qyi/0AdeK0ebjyVGbTW4NGUZMIwpQK0X5haSNzIBQS DtgPDloWHFn48osOHg6zTzmCC1I+JkPTTzqhRmcOSJQzjjpS/lMLO094uDEW2fSx5q0J BerK4xNWFGrY/v5I+2eVUAq+EJuxQ4FyYStE59E2T8YzW7OoswV3WM5dC4UM9fReTruY +duw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:date:dkim-signature; bh=7YHR2e1/LHdcwbDfdQHbOVb5eFvzBWcfcNYNhAMGlwc=; b=hmwn/mx0MVSln4L2Y/HY5/Aahj916e01QyiM26lgxHZAEk98bs7AXjde8BgvG0Z3CG 0lNd9ESH99Vv1U6yoeeyqN//yU797C8BFzhTm8ArOaB0i7Wilwo3Vn4AWgp0JZt+iUbQ nFoEPi5cwm8jo+0rSOtqxv/1r80RencU4/ZiFEeuA/3Whbeh0lOqEm529EjJWruM+ht+ aZEzIqAu5TQApIqPArZ805sv1Sj3r0hm+EDYnhUoJOc/KN0J2Y8vDiPkVre2qOJJ7TL2 LJqep2EvxSts7rgq1heLAI0/kSKJldIJ5wMpWwiMGkUshCKeUc9rakW/olR/DbMR8Kuo NBWg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@infradead.org header.s=casper.20170209 header.b=Omh9HHcu; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id z5si14127573ejb.542.2020.11.17.15.45.39; Tue, 17 Nov 2020 15:46:03 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@infradead.org header.s=casper.20170209 header.b=Omh9HHcu; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726205AbgKQXnI (ORCPT + 99 others); Tue, 17 Nov 2020 18:43:08 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43480 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725774AbgKQXnI (ORCPT ); Tue, 17 Nov 2020 18:43:08 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6D5E0C0613CF; Tue, 17 Nov 2020 15:43:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=7YHR2e1/LHdcwbDfdQHbOVb5eFvzBWcfcNYNhAMGlwc=; b=Omh9HHcudW9qg6FCeuzA3BMnTT WSKVlVHr8w8CYJdKkd+A42tomHgdm/10sLe2wCJaVvNA24LQR5ORrq5zbBso2mhk0Hh7ZioA9QB1+ cU7h2Y+dRQwcgIzGN42g27nSA5eUpoglHxgDRKuEKdXXa3WoWesnP1B3qzWVi+ZCBXSuk4VYDWlZb Wi57htRt0aTL+bxJfFbUxYOBB1RuMpTSUy6pAxSfRLUy9R2nNfsymiyp/aNear1MjdJP8VFTMF5aV 1stbt+FhLGfRTVrWaeSZ2E/3jrxzN5IW15XYmCpWW04jet7hBK5TW7rFciFenQOAOTUViNLVCLcC2 PG/I7chw==; Received: from willy by casper.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1kfAco-000461-8J; Tue, 17 Nov 2020 23:43:02 +0000 Date: Tue, 17 Nov 2020 23:43:02 +0000 From: Matthew Wilcox To: Hugh Dickins Cc: Andrew Morton , Jan Kara , William Kucharski , linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, hch@lst.de, hannes@cmpxchg.org, yang.shi@linux.alibaba.com, dchinner@redhat.com, linux-kernel@vger.kernel.org Subject: Re: [PATCH v4 00/16] Overhaul multi-page lookups for THP Message-ID: <20201117234302.GC29991@casper.infradead.org> References: <20201112212641.27837-1-willy@infradead.org> <20201117153947.GL29991@casper.infradead.org> <20201117191513.GV29991@casper.infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201117191513.GV29991@casper.infradead.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Nov 17, 2020 at 07:15:13PM +0000, Matthew Wilcox wrote: > I find both of these functions exceptionally confusing. Does this > make it easier to understand? Never mind, this is buggy. I'll send something better tomorrow.