Received: by 10.223.185.116 with SMTP id b49csp6768866wrg; Wed, 28 Feb 2018 15:24:22 -0800 (PST) X-Google-Smtp-Source: AH8x224OQ4sOJhFXNw5zdOAGhgfOiKCekkGq/VKOKmXN07OkmMuKLHWh7TsCCVSk5V8/OHdULvkx X-Received: by 10.98.35.195 with SMTP id q64mr19146906pfj.161.1519860262565; Wed, 28 Feb 2018 15:24:22 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1519860262; cv=none; d=google.com; s=arc-20160816; b=dho6e7UEsBZxvNKMrm+Ucx70LpDOnad8NqcAIi1kk9Fhags0EwsE5GCbfuaOFVtLKD R3V9+GIhh3ruO2ynQ4+gvoBPr9281KT93y1tTRBwDetd8OyxVsPcvRrVAkSjWetTS8fF M+FnslJ6Bb2DIdjQmKi/DAIq1JVH3KT5rv36cwqjDLublaAl0cJv4I92wykHwmunPjTL rt/76Zpz7u2PjrndqfhHC+KllQssr9Ruzl8HDqJ3LDQl588pCxUq00O38ImMS4x57fn+ YO1Okm3M2KNU0PB7zR7lAZBQGAYHiWPHTNDPtDJMZMwxMCkQnhcxNAo8z9LCzaumsamy xQpg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding :content-language:in-reply-to:mime-version:user-agent:date :message-id:from:references:cc:to:subject:dkim-signature :arc-authentication-results; bh=WltETErchelxoNSAZf+HBx3Jf3WsNnSc70SL2HM5rOg=; b=bECg0UKvGrgeBAfbfgpwi7Jgfq6ZrmNLTncrShL10FxXM1ljQrVQaJPEX+Ks6RYyap pebGzYLtvl2XXEYpnLPRP+/W3mRdn4q3Ps2MFoCZdb819Y60C735Huj8wrV4uh6neYLv kcGlPPAh1ZfpAKfb0SJLBu81cBzQb+nhQqZKGUXnDoEHFoC6N1it7DjFSnJVg6Ghz40P EzxfBU3a689XkUlINa0r5pPQ0S0CWlSWQcGJIiapVcroT8EcVH8kS1uEs5UY5jy4qrBF kp7KklkCgaiNbzrOkKOGFvEn3zG7eV3gsFEG/sXE/OM5Wcr67STz8jf/UyX0tJ8VKQyD uN8w== ARC-Authentication-Results: i=1; mx.google.com; dkim=fail header.i=@infradead.org header.s=merlin.20170209 header.b=UtMBpqXn; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id e123si1599280pgc.406.2018.02.28.15.24.07; Wed, 28 Feb 2018 15:24:22 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=fail header.i=@infradead.org header.s=merlin.20170209 header.b=UtMBpqXn; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964942AbeB1XW4 (ORCPT + 99 others); Wed, 28 Feb 2018 18:22:56 -0500 Received: from merlin.infradead.org ([205.233.59.134]:35248 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964783AbeB1XWy (ORCPT ); Wed, 28 Feb 2018 18:22:54 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.20170209; h=Content-Transfer-Encoding:Content-Type: In-Reply-To:MIME-Version:Date:Message-ID:From:References:Cc:To:Subject:Sender :Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=WltETErchelxoNSAZf+HBx3Jf3WsNnSc70SL2HM5rOg=; b=UtMBpqXnxnEQlrne3DedS34WVO oGiErUO/ElnqQJleEbCQiMM3xIxspnyrlJgAIgRXweuc6jJTo8uvLzOFY1NN74LtBwHrdPeEZEKt0 rozh/e8TxhSA9Pc/SGwbQVgFfvcRhzNe9QSqTTIS3fXNUJPjqF/ZCnhJuIzDzNHXMHUPaUK08Npp9 i5knwWDX295LqPqxON4g79Z+g57mAZCHU9dnYp0eTJqkNESBqw9goInBvqM5ImC1UGHH260wloDm6 tA/agfvmqsAuvo0F3brRvek02RV9YxG/xuE1EYZfDw3To7VYaRNO64NRruUU3TYLM+Pfv506svjYe 0PdBZe3A==; Received: from static-50-53-52-16.bvtn.or.frontiernet.net ([50.53.52.16] helo=midway.dunlab) by merlin.infradead.org with esmtpsa (Exim 4.89 #1 (Red Hat Linux)) id 1erB3j-0003xv-NT; Wed, 28 Feb 2018 23:22:51 +0000 Subject: Re: [PATCH v3 0/4] Split page_type out from mapcount To: Matthew Wilcox , linux-mm@kvack.org Cc: Matthew Wilcox , Martin Schwidefsky , linux-kernel@vger.kernel.org References: <20180228223157.9281-1-willy@infradead.org> From: Randy Dunlap Message-ID: <06c145aa-db40-df72-b626-da9d45f9111d@infradead.org> Date: Wed, 28 Feb 2018 15:22:49 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 MIME-Version: 1.0 In-Reply-To: <20180228223157.9281-1-willy@infradead.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 02/28/2018 02:31 PM, Matthew Wilcox wrote: > From: Matthew Wilcox > > I want to use the _mapcount field to record what a page is in use as. > This can help with debugging and we can also expose that information to > userspace through /proc/kpageflags to help diagnose memory usage (not > included as part of this patch set). Hey, Will there be updates to tools/vm/ also, or are these a different set of (many) flags? thanks, -- ~Randy