Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S936394Ab3DKVTs (ORCPT ); Thu, 11 Apr 2013 17:19:48 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:39126 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935467Ab3DKVTq (ORCPT ); Thu, 11 Apr 2013 17:19:46 -0400 Date: Thu, 11 Apr 2013 14:19:44 -0700 From: Andrew Morton To: Pavel Emelyanov Cc: Linux MM , Linux Kernel Mailing List Subject: Re: [PATCH 4/5] pagemap: Introduce the /proc/PID/pagemap2 file Message-Id: <20130411141944.dc17b3b1c78132eedec06aa6@linux-foundation.org> In-Reply-To: <51669EA5.20209@parallels.com> References: <51669E5F.4000801@parallels.com> <51669EA5.20209@parallels.com> X-Mailer: Sylpheed 3.2.0beta5 (GTK+ 2.24.10; 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 Content-Length: 601 Lines: 14 On Thu, 11 Apr 2013 15:29:41 +0400 Pavel Emelyanov wrote: > This file is the same as the pagemap one, but shows entries with bits > 55-60 being zero (reserved for future use). Next patch will occupy one > of them. I'm not understanding the motivation for this. What does the current /proc/pid/pagemap have in those bit positions? -- 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/