From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wi0-f170.google.com (mail-wi0-f170.google.com [209.85.212.170]) by kanga.kvack.org (Postfix) with ESMTP id 1D9D66B0032 for ; Wed, 10 Dec 2014 06:06:15 -0500 (EST) Received: by mail-wi0-f170.google.com with SMTP id bs8so12913240wib.3 for ; Wed, 10 Dec 2014 03:06:14 -0800 (PST) Received: from jenni1.inet.fi (mta-out1.inet.fi. [62.71.2.227]) by mx.google.com with ESMTP id hm5si6956045wjc.56.2014.12.10.03.06.14 for ; Wed, 10 Dec 2014 03:06:14 -0800 (PST) Date: Wed, 10 Dec 2014 13:05:56 +0200 From: "Kirill A. Shutemov" Subject: Re: [RFC] mm:fix zero_page huge_zero_page rss/pss statistic Message-ID: <20141210110556.GA10630@node.dhcp.inet.fi> References: <35FD53F367049845BC99AC72306C23D103E688B313EE@CNBJMBX05.corpusers.net> <35FD53F367049845BC99AC72306C23D103E688B313F2@CNBJMBX05.corpusers.net> <20141205143134.37139da2208c654a0d3cd942@linux-foundation.org> <35FD53F367049845BC99AC72306C23D103E688B313F4@CNBJMBX05.corpusers.net> <20141208114601.GA28846@node.dhcp.inet.fi> <35FD53F367049845BC99AC72306C23D103E688B313FB@CNBJMBX05.corpusers.net> <35FD53F367049845BC99AC72306C23D103E688B31403@CNBJMBX05.corpusers.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <35FD53F367049845BC99AC72306C23D103E688B31403@CNBJMBX05.corpusers.net> Sender: owner-linux-mm@kvack.org List-ID: To: "Wang, Yalin" Cc: 'Andrew Morton' , 'Konstantin Khlebnikov' , "'linux-kernel@vger.kernel.org'" , "'linux-mm@kvack.org'" , "'linux-arm-kernel@lists.infradead.org'" , "'n-horiguchi@ah.jp.nec.com'" , "'oleg@redhat.com'" , "'gorcunov@openvz.org'" , "'pfeiner@google.com'" On Wed, Dec 10, 2014 at 03:22:21PM +0800, Wang, Yalin wrote: > smaps_pte_entry() doesn't ignore zero_huge_page, > but it ignore zero_page, because vm_normal_page() will > ignore it. We remove vm_normal_page() call, because walk_page_range() > have ignore VM_PFNMAP vma maps, it's safe to just use pfn_valid(), > so that we can also consider zero_page to be a valid page. We fixed huge zero page accounting in smaps recentely. See mm tree. -- Kirill A. Shutemov -- 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