From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758069Ab2B2Ohc (ORCPT ); Wed, 29 Feb 2012 09:37:32 -0500 Received: from mx1.redhat.com ([209.132.183.28]:18186 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755146Ab2B2Ohb (ORCPT ); Wed, 29 Feb 2012 09:37:31 -0500 Date: Wed, 29 Feb 2012 15:37:25 +0100 From: Karel Zak To: linux-kernel@vger.kernel.org Cc: Zhi Li Subject: Re: zero devno in /proc/self/mountinfo Message-ID: <20120229143725.GA18232@x2.net.home> References: <1330504129-5545-1-git-send-email-lizhi1215@gmail.com> <20120229141433.GB8471@x2.net.home> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20120229141433.GB8471@x2.net.home> User-Agent: Mutt/1.5.21 (2011-07-01) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Feb 29, 2012 at 03:14:33PM +0100, Karel Zak wrote: > On Wed, Feb 29, 2012 at 04:28:49PM +0800, Zhi Li wrote: > > zhi@debian-lizhi:~$ cat /proc/self/mountinfo > > 14 19 0:0 / /sys rw,nosuid,nodev,noexec,relatime - sysfs none rw > > Strange, I have never seen zero (0:0) devno. Is it correct? Seems > like a bug. OK, fs/super.c, get_anon_bdev(), unnamed_dev_start = 0; explains the problem. It seems like expected behavior. Karel -- Karel Zak http://karelzak.blogspot.com