From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 26DDDC5DF62 for ; Wed, 6 Nov 2019 04:00:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CE71121882 for ; Wed, 6 Nov 2019 04:00:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573012825; bh=EHB0u3MVxEhZWTCAi5ESkXM4zpATJfaJBa2YTknoRTg=; h=Date:From:To:Cc:Subject:In-Reply-To:References:List-ID:From; b=oipuylEs3Vt1mOvMe7IcKWAVbNhgtLeWr4X+xCIjjGsSEiEXd4+UwXtNOBl1i3Tn4 d/0PQqE3yiVP0P2CYj7Wh/Zetuw6tVtVPTW+eyPaIeBxd5sJKxNzlklteW+lkB9a6S cnTjKPp5rsTsLIxAxpRPnif5cjKDTyaAKAJQ5kB0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731192AbfKFEAZ (ORCPT ); Tue, 5 Nov 2019 23:00:25 -0500 Received: from mail.kernel.org ([198.145.29.99]:42600 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727266AbfKFEAY (ORCPT ); Tue, 5 Nov 2019 23:00:24 -0500 Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id BF06F2087E; Wed, 6 Nov 2019 04:00:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573012824; bh=EHB0u3MVxEhZWTCAi5ESkXM4zpATJfaJBa2YTknoRTg=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=ED+AyhOAGBVb9eR7kmanZ6wkAt4L+7d3LzYOhxHrTEdk65Q6f+V6vk5gZxfwJuoLL qbbGHBThIPKa5oqbpA8lBNoUPrjZ/vauXJeSdCFvF1FM6/NL8a7CqBQxXfMecOsBMp ciWGs8vlr8ZM46fm58Xbgd5Q2FC3L1aBBgaZEHWM= Date: Tue, 5 Nov 2019 20:00:22 -0800 From: Andrew Morton To: Alexander Duyck Cc: kvm@vger.kernel.org, mst@redhat.com, linux-kernel@vger.kernel.org, willy@infradead.org, mhocko@kernel.org, linux-mm@kvack.org, mgorman@techsingularity.net, vbabka@suse.cz, yang.zhang.wz@gmail.com, nitesh@redhat.com, konrad.wilk@oracle.com, david@redhat.com, pagupta@redhat.com, riel@surriel.com, lcapitulino@redhat.com, dave.hansen@intel.com, wei.w.wang@intel.com, aarcange@redhat.com, pbonzini@redhat.com, dan.j.williams@intel.com, alexander.h.duyck@linux.intel.com, osalvador@suse.de Subject: Re: [PATCH v13 3/6] mm: Introduce Reported pages Message-Id: <20191105200022.ed3b5f803bef55377bcc5d30@linux-foundation.org> In-Reply-To: <20191105220219.15144.69031.stgit@localhost.localdomain> References: <20191105215940.15144.65968.stgit@localhost.localdomain> <20191105220219.15144.69031.stgit@localhost.localdomain> X-Mailer: Sylpheed 3.5.1 (GTK+ 2.24.31; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 05 Nov 2019 14:02:19 -0800 Alexander Duyck wrote: > In order to pave the way for free page reporting in virtualized > environments we will need a way to get pages out of the free lists and > identify those pages after they have been returned. To accomplish this, > this patch adds the concept of a Reported Buddy, which is essentially > meant to just be the Uptodate flag used in conjunction with the Buddy > page type. build fix --- a/mm/page_reporting.h~mm-introduce-reported-pages-fix +++ a/mm/page_reporting.h @@ -158,7 +158,7 @@ free_area_reporting(struct zone *zone, u return false; } static inline struct list_head * -get_unreported_tail(struct zone *zone, unsigned int order, int migratetype) +get_unreported_tail(unsigned int order, int migratetype) { return NULL; } _