Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753511AbdCMO6t (ORCPT ); Mon, 13 Mar 2017 10:58:49 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:57016 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752772AbdCMO6i (ORCPT ); Mon, 13 Mar 2017 10:58:38 -0400 Date: Mon, 13 Mar 2017 09:58:16 -0500 From: Reza Arbab To: Michal Hocko Cc: Igor Mammedov , Heiko Carstens , Vitaly Kuznetsov , linux-mm@kvack.org, Andrew Morton , Greg KH , "K. Y. Srinivasan" , David Rientjes , Daniel Kiper , linux-api@vger.kernel.org, LKML , linux-s390@vger.kernel.org, xen-devel@lists.xenproject.org, linux-acpi@vger.kernel.org, qiuxishi@huawei.com, toshi.kani@hpe.com, xieyisheng1@huawei.com, slaoub@gmail.com, iamjoonsoo.kim@lge.com, vbabka@suse.cz, Zhang Zhen , Yasuaki Ishimatsu , Tang Chen Subject: Re: WTH is going on with memory hotplug sysf interface (was: Re: [RFC PATCH] mm, hotplug: get rid of auto_online_blocks) References: <20170302180315.78975d4b@nial.brq.redhat.com> <20170303082723.GB31499@dhcp22.suse.cz> <20170303183422.6358ee8f@nial.brq.redhat.com> <20170306145417.GG27953@dhcp22.suse.cz> <20170307134004.58343e14@nial.brq.redhat.com> <20170309125400.GI11592@dhcp22.suse.cz> <20170310135807.GI3753@dhcp22.suse.cz> <20170310155333.GN3753@dhcp22.suse.cz> <20170310190037.fifahjd47joim6zy@arbab-laptop> <20170313092145.GG31518@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: <20170313092145.GG31518@dhcp22.suse.cz> Organization: IBM Linux Technology Center User-Agent: NeoMutt/20170306 (1.8.0) X-TM-AS-GCONF: 00 x-cbid: 17031314-2213-0000-0000-00000157466C X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00006775; HX=3.00000240; KW=3.00000007; PH=3.00000004; SC=3.00000206; SDB=6.00833247; UDB=6.00409070; IPR=6.00610906; BA=6.00005207; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00014630; XFM=3.00000013; UTC=2017-03-13 14:58:29 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17031314-2214-0000-0000-0000549C0F03 Message-Id: <20170313145815.uba3ij5seq6mrhow@arbab-laptop> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-03-13_06:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1702020001 definitions=main-1703130120 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 561 Lines: 14 On Mon, Mar 13, 2017 at 10:21:45AM +0100, Michal Hocko wrote: >> I agree with your general sentiment that this stuff is very >> nonintuitive. > >My criterion for nonintuitive is probably different because I would >call this _completely_unusable_. Sorry for being so loud about this but >the more I look into this area the more WTF code I see. This has seen >close to zero review and seems to be building up more single usecase >code on top of previous. We need to change this, seriously! No argument here. I'm happy to help however I can. -- Reza Arbab