From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754798Ab2G3TTy (ORCPT ); Mon, 30 Jul 2012 15:19:54 -0400 Received: from e5.ny.us.ibm.com ([32.97.182.145]:53160 "EHLO e5.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754269Ab2G3TTx (ORCPT ); Mon, 30 Jul 2012 15:19:53 -0400 Message-ID: <5016DE4E.5050300@linux.vnet.ibm.com> Date: Mon, 30 Jul 2012 14:19:42 -0500 From: Seth Jennings User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:14.0) Gecko/20120714 Thunderbird/14.0 MIME-Version: 1.0 To: Dan Magenheimer CC: Konrad Rzeszutek Wilk , Greg Kroah-Hartman , Andrew Morton , Nitin Gupta , Minchan Kim , Konrad Wilk , Robert Jennings , linux-mm@kvack.org, linux-kernel@vger.kernel.org, devel@driverdev.osuosl.org Subject: Re: [PATCH 0/4] promote zcache from staging References: <1343413117-1989-1-git-send-email-sjenning@linux.vnet.ibm.com> <20120727205932.GA12650@localhost.localdomain> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Content-Scanned: Fidelis XPS MAILER x-cbid: 12073019-5930-0000-0000-00000A5D4F06 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Dan, I started writing inline responses to each concern but that was adding more confusion than clarity. I would like to focus the discussion. The purpose of this patchset is to discuss the inclusion of zcache into mainline during the 3.7 merge window. zcache has been a staging since v2.6.39 and has been maturing with contributions from 15 developers (5 with multiple commits) working on improvements and bug fixes. I want good code in the kernel, so if there are particular areas that need attention before it's of acceptable quality for mainline we need that discussion. I am eager to have customers using memory compression with zcache but before that I want to see zcache in mainline. We agree with Konrad that zcache should be promoted before additional features are included. Greg has also expressed that he would like promotion before attempting to add additional features [1]. Including new features now, while in the staging tree, adds to the complexity and difficultly of reverifying zcache and getting it accepted into mainline. [1] https://lkml.org/lkml/2012/3/16/472 Let's have this discussion. If there are specific issues that need to be addressed to get this ready for mainline let's take them one-by-one and line-by-line with patches. Seth