From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752427Ab1LSTY4 (ORCPT ); Mon, 19 Dec 2011 14:24:56 -0500 Received: from mail-gy0-f174.google.com ([209.85.160.174]:45813 "EHLO mail-gy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751606Ab1LSTYy (ORCPT ); Mon, 19 Dec 2011 14:24:54 -0500 Message-ID: <4EEF8F85.9010408@gmail.com> Date: Mon, 19 Dec 2011 14:24:53 -0500 From: KOSAKI Motohiro User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:8.0) Gecko/20111105 Thunderbird/8.0 MIME-Version: 1.0 To: Naoya Horiguchi CC: linux-mm@kvack.org, Andi Kleen , Wu Fengguang , Andrea Arcangeli , KOSAKI Motohiro , KAMEZAWA Hiroyuki , linux-kernel@vger.kernel.org Subject: Re: [RFC][PATCH 2/3] pagemap: export KPF_THP References: <1324319919-31720-1-git-send-email-n-horiguchi@ah.jp.nec.com> <1324319919-31720-3-git-send-email-n-horiguchi@ah.jp.nec.com> In-Reply-To: <1324319919-31720-3-git-send-email-n-horiguchi@ah.jp.nec.com> Content-Type: text/plain; charset=ISO-2022-JP Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org (12/19/11 1:38 PM), Naoya Horiguchi wrote: > This flag shows that a given pages is a subpage of transparent hugepage. > It does not care about whether it is a head page or a tail page, because > it's clear from pfn of the target page which you should know when you read > /proc/kpageflags. > > Signed-off-by: Naoya Horiguchi NAK. The detail of transparent hugepage are hidden by design. We hope it keep 'transparent'. Until any explain why we should expose KPF_THP, we don't agree it.