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=-0.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, 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 6F63AC54FC9 for ; Tue, 21 Apr 2020 09:00:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 45AB0206D9 for ; Tue, 21 Apr 2020 09:00:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="hONjiqy/" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728308AbgDUJAN (ORCPT ); Tue, 21 Apr 2020 05:00:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54154 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1726052AbgDUJAN (ORCPT ); Tue, 21 Apr 2020 05:00:13 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E6710C061A0F for ; Tue, 21 Apr 2020 02:00:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.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=d40xS3Zbw/pMXgln3ygv6nRVMsVWeln3BpvTx1qiDQU=; b=hONjiqy/vUe6UnxP0LCJ1byLyL h5QuDIAr63PlmihkCb/6V8z8UVshOrBPKi4wq2Ydw8XBaqx0JjXgHWj7QkKlXuQ41EeGYhBwwOhAe aKEqwdkpXZGVjLr0ZuY7ggJqL2HXl6EeEJkpGiyjAsyOa826Llzv6/1KExDbqCXQHvXwU8KIM9fZC qPIIJLwjl3cUGfvgYEvqvRWN7d3X/MQxUmbxu9J6sZTKna6LlRIdeNqaNenjO8woWN70PGKuYubSP hcCBDihkubEbnWG2YwZ4+V77M7sR7K/WSIivz7pEPqKSv/l8f7AvFbexcCipgpa5ubMmHrathS5tQ AZ/SfUSw==; Received: from hch by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1jQolB-0007rq-Lu; Tue, 21 Apr 2020 09:00:05 +0000 Date: Tue, 21 Apr 2020 02:00:05 -0700 From: Christoph Hellwig To: js1304@gmail.com Cc: Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Vlastimil Babka , Laura Abbott , "Aneesh Kumar K . V" , Mel Gorman , Michal Hocko , Johannes Weiner , Roman Gushchin , Minchan Kim , Rik van Riel , Christian Koenig , Huang Rui , Eric Biederman , "Rafael J . Wysocki" , Pavel Machek , Joonsoo Kim Subject: Re: [PATCH 01/10] mm/page-flags: introduce PageHighMemZone() Message-ID: <20200421090005.GA23085@infradead.org> References: <1587369582-3882-1-git-send-email-iamjoonsoo.kim@lge.com> <1587369582-3882-2-git-send-email-iamjoonsoo.kim@lge.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1587369582-3882-2-git-send-email-iamjoonsoo.kim@lge.com> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org I don't think the names are very good. I'd keep PageHighMem for the existing highmem zone, and add something like PageDirectMapped or similar for ay page that has a valid direct mapping address. This will also come in handy if we plan to go ahead with the xpfo work.