From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lf0-f70.google.com (mail-lf0-f70.google.com [209.85.215.70]) by kanga.kvack.org (Postfix) with ESMTP id 128786B0388 for ; Fri, 10 Feb 2017 04:05:57 -0500 (EST) Received: by mail-lf0-f70.google.com with SMTP id o12so11388968lfg.7 for ; Fri, 10 Feb 2017 01:05:57 -0800 (PST) Received: from SELDSEGREL01.sonyericsson.com (seldsegrel01.sonyericsson.com. [37.139.156.29]) by mx.google.com with ESMTPS id n3si685850lfd.347.2017.02.10.01.05.55 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 10 Feb 2017 01:05:55 -0800 (PST) Subject: Re: [PATCH 1/3 staging-next] android: Collect statistics from lowmemorykiller References: <9febd4f7-a0a7-5f52-e67b-df3163814ac5@sonymobile.com> <20170209192640.GC31906@dhcp22.suse.cz> <20170209200737.GB11098@kroah.com> <20170209205407.GF31906@dhcp22.suse.cz> <845d420f-dd26-fb48-c8ef-10ca1995daf8@sonymobile.com> <20170210075149.GA17166@kroah.com> <20170210075949.GB10893@dhcp22.suse.cz> From: peter enderborg Message-ID: Date: Fri, 10 Feb 2017 10:05:34 +0100 MIME-Version: 1.0 In-Reply-To: <20170210075949.GB10893@dhcp22.suse.cz> Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Michal Hocko , Greg Kroah-Hartman Cc: devel@driverdev.osuosl.org, Riley Andrews , linux-kernel@vger.kernel.org, linux-mm@kvack.org, =?UTF-8?Q?Arve_Hj=c3=b8nnev=c3=a5g?= , Linus Torvalds On 02/10/2017 08:59 AM, Michal Hocko wrote: > On Fri 10-02-17 08:51:49, Greg KH wrote: >> On Fri, Feb 10, 2017 at 08:21:32AM +0100, peter enderborg wrote: > [...] >>> Until then we have to polish this version as good as we can. It is >>> essential for android as it is now. >> But if no one is willing to do the work to fix the reported issues, why >> should it remain? Can you do the work here? You're already working on >> fixing some of the issues in a differnt way, why not do the "real work" >> here instead for everyone to benifit from? > Well, to be honest, I do not think that the current code is easily > fixable. This patch improves the current situation and address some of the issues that makes android devices behaviour different than other linux systems. > The approach was wrong from the day 1. Abusing slab shrinkers > is just a bad place to stick this logic. This all belongs to the > userspace. But now it is there and we have to stick with it. > For that we need a proper mm pressure notification which is > supposed to be vmpressure but that one also doesn't seem to work all > that great. So rather than trying to fix unfixable I would stronly > suggest focusing on making vmpressure work reliably. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org