Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755495AbaFKMbO (ORCPT ); Wed, 11 Jun 2014 08:31:14 -0400 Received: from mail-qa0-f53.google.com ([209.85.216.53]:58192 "EHLO mail-qa0-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751965AbaFKMbM (ORCPT ); Wed, 11 Jun 2014 08:31:12 -0400 Date: Wed, 11 Jun 2014 08:31:09 -0400 From: Tejun Heo To: Michal Hocko Cc: Johannes Weiner , Greg Thelen , Hugh Dickins , Andrew Morton , KAMEZAWA Hiroyuki , KOSAKI Motohiro , Michel Lespinasse , Roman Gushchin , LKML , linux-mm@kvack.org Subject: Re: [PATCH 2/2] memcg: Allow hard guarantee mode for low limit reclaim Message-ID: <20140611123109.GA17777@htj.dyndns.org> References: <20140606144421.GE26253@dhcp22.suse.cz> <1402066010-25901-1-git-send-email-mhocko@suse.cz> <1402066010-25901-2-git-send-email-mhocko@suse.cz> <20140610165756.GG2878@cmpxchg.org> <20140611075729.GA4520@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20140611075729.GA4520@dhcp22.suse.cz> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, Michal. On Wed, Jun 11, 2014 at 09:57:29AM +0200, Michal Hocko wrote: > Is this the kind of symmetry Tejun is asking for and that would make > change is Nack position? I am still not sure it satisfies his soft Yes, pretty much. What primarily bothered me was the soft/hard guarantees being chosen by a toggle switch while the soft/hard limits can be configured separately and combined. > guarantee objections from other email. I was wondering about the usefulness of "low" itself in isolation and I still think it'd be less useful than "high", but as there seem to be use cases which can be served with that and especially as a part of a consistent control scheme, I have no objection. "low" definitely requires a notification mechanism tho. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/