From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx205.postini.com [74.125.245.205]) by kanga.kvack.org (Postfix) with SMTP id C49C56B0005 for ; Mon, 18 Mar 2013 20:49:07 -0400 (EDT) Received: by mail-pb0-f42.google.com with SMTP id xb4so6849970pbc.29 for ; Mon, 18 Mar 2013 17:49:07 -0700 (PDT) Date: Mon, 18 Mar 2013 17:50:23 -0700 From: Greg Kroah-Hartman 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> Sender: owner-linux-mm@kvack.org List-ID: To: Wanpeng Li Cc: Andrew Morton , Dan Magenheimer , Seth Jennings , Konrad Rzeszutek Wilk , Minchan Kim , linux-mm@kvack.org, linux-kernel@vger.kernel.org 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, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org