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=-2.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_PASS autolearn=ham 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 6391EC43441 for ; Tue, 27 Nov 2018 00:33:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2090720828 for ; Tue, 27 Nov 2018 00:33:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="kiny+nMq" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2090720828 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=oracle.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727742AbeK0L3k (ORCPT ); Tue, 27 Nov 2018 06:29:40 -0500 Received: from userp2120.oracle.com ([156.151.31.85]:51250 "EHLO userp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727456AbeK0L3k (ORCPT ); Tue, 27 Nov 2018 06:29:40 -0500 Received: from pps.filterd (userp2120.oracle.com [127.0.0.1]) by userp2120.oracle.com (8.16.0.22/8.16.0.22) with SMTP id wAR0TKa9101241; Tue, 27 Nov 2018 00:33:35 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=content-type : mime-version : subject : from : in-reply-to : date : cc : content-transfer-encoding : message-id : references : to; s=corp-2018-07-02; bh=L3qtZDcQKEJiij0iw9h/FZGfacmPzn1o6HxucdjXFew=; b=kiny+nMqMntic4/ICce1+OVjkt5kpWQK2SxLj2GDjQk/yjBUBS2qwD++BY0JfmUF0b9t YLThp2Pyd9eEZre8y9c9Gi/lMamojt3lxxbktnrY5WU6jmvY/cnWCrHthc4LUj/mkpZ/ 0U72ZDEpyaw3xeQctPanHvd/K0Y2ORd9bo5kGWtBtLV1h4Y1sNe6Y2rm2OAoe1NaNayw uK/Y0Jg5QQQHvZvUXjUQVkirN7tK99oZfBuFe++EHB5BNGX4C/HOVp0bW/hnprTCCuZu p5NVp/fn52Kg2agCMaup5o0YwY4IHaeQTTW+CbY3t1CqSCIFKd85ehU/idc00nvXlMNS 6w== Received: from userv0021.oracle.com (userv0021.oracle.com [156.151.31.71]) by userp2120.oracle.com with ESMTP id 2nxy9r0yq0-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 27 Nov 2018 00:33:35 +0000 Received: from userv0121.oracle.com (userv0121.oracle.com [156.151.31.72]) by userv0021.oracle.com (8.14.4/8.14.4) with ESMTP id wAR0XYMX010657 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 27 Nov 2018 00:33:34 GMT Received: from abhmp0019.oracle.com (abhmp0019.oracle.com [141.146.116.25]) by userv0121.oracle.com (8.14.4/8.13.8) with ESMTP id wAR0XXep004298; Tue, 27 Nov 2018 00:33:34 GMT Received: from [192.168.0.110] (/73.243.10.6) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Mon, 26 Nov 2018 16:33:33 -0800 Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 12.2 \(3445.102.3\)) Subject: Re: [RFC PATCH 3/3] mm, proc: report PR_SET_THP_DISABLE in proc From: William Kucharski In-Reply-To: <20181120103515.25280-4-mhocko@kernel.org> Date: Mon, 26 Nov 2018 17:33:32 -0700 Cc: linux-api@vger.kernel.org, Andrew Morton , Alexey Dobriyan , linux-mm@kvack.org, LKML , Michal Hocko Content-Transfer-Encoding: quoted-printable Message-Id: <0ACDD94B-75AD-4DD0-B2E3-32C0EDFBAA5E@oracle.com> References: <20181120103515.25280-1-mhocko@kernel.org> <20181120103515.25280-4-mhocko@kernel.org> To: Michal Hocko X-Mailer: Apple Mail (2.3445.102.3) X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=9089 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=504 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1811270001 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This determines whether the page can theoretically be THP-mapped , but = is the intention to also check for proper alignment and/or preexisting = PAGESIZE page cache mappings for the address range? I'm having to deal with both these issues in the text page THP prototype = I've been working on for some time now. Thanks, William Kucharski=