Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S936714Ab3DIBgL (ORCPT ); Mon, 8 Apr 2013 21:36:11 -0400 Received: from LGEMRELSE7Q.lge.com ([156.147.1.151]:56602 "EHLO LGEMRELSE7Q.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S936538Ab3DIBgK (ORCPT ); Mon, 8 Apr 2013 21:36:10 -0400 X-AuditID: 9c930197-b7b50ae00000018c-77-51637087c3e3 Date: Tue, 9 Apr 2013 10:36:06 +0900 From: Minchan Kim To: Dan Magenheimer Cc: Andrew Morton , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Hugh Dickins , Seth Jennings , Nitin Gupta , Konrad Rzeszutek Wilk , Shaohua Li , Bob Liu , Shuah Khan Subject: Re: zsmalloc defrag (Was: [PATCH] mm: remove compressed copy from zram in-memory) Message-ID: <20130409013606.GC3467@blaptop> References: <1365400862-9041-1-git-send-email-minchan@kernel.org> <20130409012719.GB3467@blaptop> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20130409012719.GB3467@blaptop> User-Agent: Mutt/1.5.21 (2010-09-15) X-Brightmail-Tracker: AAAAAA== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1575 Lines: 42 On Tue, Apr 09, 2013 at 10:27:19AM +0900, Minchan Kim wrote: > Hi Dan, > > On Mon, Apr 08, 2013 at 09:32:38AM -0700, Dan Magenheimer wrote: > > > From: Minchan Kim [mailto:minchan@kernel.org] > > > Sent: Monday, April 08, 2013 12:01 AM > > > Subject: [PATCH] mm: remove compressed copy from zram in-memory > > > > (patch removed) > > > > > Fragment ratio is almost same but memory consumption and compile time > > > is better. I am working to add defragment function of zsmalloc. > > > > Hi Minchan -- > > > > I would be very interested in your design thoughts on > > how you plan to add defragmentation for zsmalloc. In > > What I can say now about is only just a word "Compaction". > As you know, zsmalloc has a transparent handle so we can do whatever > under user. Of course, there is a tradeoff between performance > and memory efficiency. I'm biased to latter for embedded usecase. > > And I might post it because as you know well, zsmalloc Incomplete sentense, I might not post it until promoting zsmalloc because as you know well, zsmalloc/zram's all new stuffs are blocked into staging tree. Even if we could add it into staging, as you know well, staging is where every mm guys ignore so we end up needing another round to promote it. sigh. I hope it gets better after LSF/MM. -- Kind regards, Minchan Kim -- 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/