From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934473AbdKAVfg (ORCPT ); Wed, 1 Nov 2017 17:35:36 -0400 Received: from osg.samsung.com ([64.30.133.232]:37927 "EHLO osg.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933392AbdKAVfe (ORCPT ); Wed, 1 Nov 2017 17:35:34 -0400 Subject: Re: [PATCH] selftests/vm: Add tests validating mremap mirror functionality To: Anshuman Khandual , linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: mike.kravetz@oracle.com, mhocko@kernel.org, Shuah Khan , Shuah Khan References: <20171030031808.24934-1-khandual@linux.vnet.ibm.com> From: Shuah Khan Message-ID: <0facab37-cdb3-1670-abc3-f4fdcc2e4e19@osg.samsung.com> Date: Wed, 1 Nov 2017 15:35:32 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 MIME-Version: 1.0 In-Reply-To: <20171030031808.24934-1-khandual@linux.vnet.ibm.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/29/2017 09:18 PM, Anshuman Khandual wrote: > This adds two tests to validate mirror functionality with mremap() > system call on shared and private anon mappings. After the commit > dba58d3b8c5 ("mm/mremap: fail map duplication attempts for private > mappings"), any attempt to mirror private anon mapping will fail. > > Suggested-by: Mike Kravetz > Signed-off-by: Anshuman Khandual > Reviewed-by: Mike Kravetz > --- > Changes in V4: > > - Folded these two test files into just one as per Mike > - Did some renaming of functions, cleans ups etc > > Changes in V3: (https://patchwork.kernel.org/patch/10013469/) > > - Fail any attempts to mirror an existing anon private mapping > - Updated run_vmtests to include these new mremap tests > - Updated the commit message > > Changes in V2: (https://patchwork.kernel.org/patch/9861259/) > > - Added a test for private anon mappings > - Used sysconf(_SC_PAGESIZE) instead of hard coding page size > - Used MREMAP_MAYMOVE instead of hard coding the flag value 1 > > Original V1: (https://patchwork.kernel.org/patch/9854415/) Thanks. I will queue this up for 4.15-rc1 -- Shuah