From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail144.messagelabs.com (mail144.messagelabs.com [216.82.254.51]) by kanga.kvack.org (Postfix) with ESMTP id BEFBA8D0039 for ; Mon, 28 Feb 2011 21:21:53 -0500 (EST) Received: from d01dlp02.pok.ibm.com (d01dlp02.pok.ibm.com [9.56.224.85]) by e3.ny.us.ibm.com (8.14.4/8.13.1) with ESMTP id p2121qTv011478 for ; Mon, 28 Feb 2011 21:01:52 -0500 Received: from d01relay01.pok.ibm.com (d01relay01.pok.ibm.com [9.56.227.233]) by d01dlp02.pok.ibm.com (Postfix) with ESMTP id C766D6E8036 for ; Mon, 28 Feb 2011 21:21:51 -0500 (EST) Received: from d01av01.pok.ibm.com (d01av01.pok.ibm.com [9.56.224.215]) by d01relay01.pok.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id p212LpEF378504 for ; Mon, 28 Feb 2011 21:21:51 -0500 Received: from d01av01.pok.ibm.com (loopback [127.0.0.1]) by d01av01.pok.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id p212Lpr2003992 for ; Mon, 28 Feb 2011 21:21:51 -0500 Subject: Re: [PATCH] ksm: add vm_stat and meminfo entry to reflect pte mapping to ksm pages From: Dave Hansen In-Reply-To: <201102262256.31565.nai.xia@gmail.com> References: <201102262256.31565.nai.xia@gmail.com> Content-Type: text/plain; charset="ISO-8859-1" Date: Mon, 28 Feb 2011 18:21:48 -0800 Message-ID: <1298946108.9138.1173.camel@nimitz> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: nai.xia@gmail.com Cc: Izik Eidus , Hugh Dickins , Andrea Arcangeli , Chris Wright , Rik van Riel , linux-kernel@vger.kernel.org, linux-mm@kvack.org, kernel-janitors@vger.kernel.org, Andrew Morton On Sat, 2011-02-26 at 22:56 +0800, Nai Xia wrote > @@ -904,6 +905,10 @@ static int try_to_merge_one_page(struct vm_area_struct > *vma, > */ > set_page_stable_node(page, NULL); > mark_page_accessed(page); > + if (mapcount) > + add_zone_page_state(page_zone(page), > + NR_KSM_PAGES_SHARING, > + mapcount); > err = 0; > } else if (pages_identical(page, kpage)) > err = replace_page(vma, page, kpage, orig_pte); If you're going to store this per-zone, does it make sense to have it show up in /proc/zoneinfo? meminfo's also getting pretty porky these days, so I almost wonder if it should stay in zoneinfo only. -- Dave -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org