From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759882Ab2CMVtd (ORCPT ); Tue, 13 Mar 2012 17:49:33 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:49424 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752860Ab2CMVtc (ORCPT ); Tue, 13 Mar 2012 17:49:32 -0400 Date: Tue, 13 Mar 2012 14:49:30 -0700 From: Andrew Morton To: "Aneesh Kumar K.V" Cc: linux-mm@kvack.org, mgorman@suse.de, kamezawa.hiroyu@jp.fujitsu.com, dhillf@gmail.com, aarcange@redhat.com, mhocko@suse.cz, hannes@cmpxchg.org, linux-kernel@vger.kernel.org, cgroups@vger.kernel.org Subject: Re: [PATCH -V3 0/8] memcg: Add memcg extension to control HugeTLB allocation Message-Id: <20120313144930.284228c4.akpm@linux-foundation.org> In-Reply-To: <1331622432-24683-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> References: <1331622432-24683-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> X-Mailer: Sylpheed 3.0.2 (GTK+ 2.20.1; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 13 Mar 2012 12:37:04 +0530 "Aneesh Kumar K.V" wrote: > This patchset implements a memory controller extension to control > HugeTLB allocations. Well, why? What are the use cases? Who is asking for this? Why do they need it and how will they use it? etcetera. Please explain, with some care, why you think we should add this feature to the kernel. So that others can assess whether the value it adds is worth the cost of adding and maintaining it.