Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751875AbaLEWbh (ORCPT ); Fri, 5 Dec 2014 17:31:37 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:53672 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751041AbaLEWbg (ORCPT ); Fri, 5 Dec 2014 17:31:36 -0500 Date: Fri, 5 Dec 2014 14:31:34 -0800 From: Andrew Morton To: "Wang, Yalin" Cc: "'Konstantin Khlebnikov'" , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , "linux-arm-kernel@lists.infradead.org" , "n-horiguchi@ah.jp.nec.com" Subject: Re: [RFC] mm:add KPF_ZERO_PAGE flag for /proc/kpageflags Message-Id: <20141205143134.37139da2208c654a0d3cd942@linux-foundation.org> In-Reply-To: <35FD53F367049845BC99AC72306C23D103E688B313F2@CNBJMBX05.corpusers.net> References: <35FD53F367049845BC99AC72306C23D103E688B313EE@CNBJMBX05.corpusers.net> <35FD53F367049845BC99AC72306C23D103E688B313F2@CNBJMBX05.corpusers.net> X-Mailer: Sylpheed 3.4.0beta7 (GTK+ 2.24.23; 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 Fri, 5 Dec 2014 18:22:33 +0800 "Wang, Yalin" wrote: > > -----Original Message----- > > From: Konstantin Khlebnikov [mailto:koct9i@gmail.com] > > Sent: Friday, December 05, 2014 5:21 PM > > To: Wang, Yalin > > Cc: linux-kernel@vger.kernel.org; linux-mm@kvack.org; linux-arm- > > kernel@lists.infradead.org; akpm@linux-foundation.org; n- > > horiguchi@ah.jp.nec.com > > Subject: Re: [RFC] mm:add KPF_ZERO_PAGE flag for /proc/kpageflags > > > > On Fri, Dec 5, 2014 at 11:57 AM, Wang, Yalin > > wrote: > > > This patch add KPF_ZERO_PAGE flag for zero_page, so that userspace > > > process can notice zero_page from /proc/kpageflags, and then do memory > > > analysis more accurately. > > > > It would be nice to mark also huge_zero_page. See (completely > > untested) patch in attachment. > > > Got it, > Thanks for your patch. Documentation/vm/pagemap.txt will need updating please. -- 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/