Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757317Ab3CSAtJ (ORCPT ); Mon, 18 Mar 2013 20:49:09 -0400 Received: from mail-pb0-f51.google.com ([209.85.160.51]:65324 "EHLO mail-pb0-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754563Ab3CSAtH (ORCPT ); Mon, 18 Mar 2013 20:49:07 -0400 Date: Mon, 18 Mar 2013 17:50:23 -0700 From: Greg Kroah-Hartman To: Wanpeng Li Cc: Andrew Morton , Dan Magenheimer , Seth Jennings , Konrad Rzeszutek Wilk , Minchan Kim , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v3 2/5] zero-filled pages awareness Message-ID: <20130319005023.GA19891@kroah.com> References: <1363314860-22731-1-git-send-email-liwanp@linux.vnet.ibm.com> <1363314860-22731-3-git-send-email-liwanp@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1363314860-22731-3-git-send-email-liwanp@linux.vnet.ibm.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 955 Lines: 24 On Fri, Mar 15, 2013 at 10:34:17AM +0800, Wanpeng Li wrote: > Compression of zero-filled pages can unneccessarily cause internal > fragmentation, and thus waste memory. This special case can be > optimized. > > This patch captures zero-filled pages, and marks their corresponding > zcache backing page entry as zero-filled. Whenever such zero-filled > page is retrieved, we fill the page frame with zero. > > Acked-by: Dan Magenheimer > Signed-off-by: Wanpeng Li This patch applies with a bunch of fuzz, meaning it wasn't made against the latest tree, which worries me. Care to redo it, and the rest of the series, and resend it? thanks, greg k-h -- 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/