From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx186.postini.com [74.125.245.186]) by kanga.kvack.org (Postfix) with SMTP id 236056B0032 for ; Tue, 30 Jul 2013 16:46:58 -0400 (EDT) Received: by mail-la0-f52.google.com with SMTP id fq13so4473619lab.25 for ; Tue, 30 Jul 2013 13:46:56 -0700 (PDT) Message-Id: <20130730204154.407090410@gmail.com> Date: Wed, 31 Jul 2013 00:41:54 +0400 From: Cyrill Gorcunov Subject: [patch 0/2] Soft-dirty page tracker improvemens Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org, luto@amacapital.net, gorcunov@openvz.org, xemul@parallels.com, akpm@linux-foundation.org, mpm@selenic.com, xiaoguangrong@linux.vnet.ibm.com, mtosatti@redhat.com, kosaki.motohiro@gmail.com, sfr@canb.auug.org.au, peterz@infradead.org, aneesh.kumar@linux.vnet.ibm.com Hi, as being reported by Andy, there are a couple of situations when soft-dirty bit will be lost, in paricular when page we're tracking is going to swap and when file page get reclaimed. In this series both problems are aimed. One more hardness which remains is the scenario when vma area (which has soft-dirty bit set in appropriate pte entries) get unmapped then new one mapped in-place. I'm working on it now hope to provide a patch soon. Thanks, Cyrill -- 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