From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tejun Heo <tj@kernel.org>
Subject: Re: [patch 2/2] fs, proc: Introduce the /proc/<pid>/map_files/
 directory v6
Date: Fri, 2 Sep 2011 11:29:57 +0900
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Cc: Cyrill Gorcunov <gorcunov@openvz.org>, containers@lists.osdl.org,
	linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	Nathan Lynch <ntl@pobox.com>,
	Oren Laadan <orenl@cs.columbia.edu>,
	Daniel Lezcano <dlezcano@fr.ibm.com>,
	Glauber Costa <glommer@parallels.com>,
	James Bottomley <jbottomley@parallels.com>,
	Vasiliy Kulikov <segoon@openwall.com>,
	"Kirill A. Shutemov" <kirill@shutemov.name>,
	Alexey Dobriyan <adobriyan@gmail.com>,
	Al Viro <viro@ZenIV.linux.org.uk>,
	Andrew Morton <akpm@linux-foundation.org>,
	Pavel Emelyanov <xemul@parallels.com>
To: Nicholas Miell <nmiell@gmail.com>
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Hello,

On Thu, Sep 01, 2011 at 07:04:42PM -0700, Nicholas Miell wrote:
> So are the filenames in /proc/$PID/map_files/ guaranteed to be identical
> to the first field (first two fields? the part before the first space)
> in /proc/$PID/maps?

Yeap, naturally.

> When I open a file in /proc/$PID/map_files/, is offset 0 the start of
> the file on disk or is it the first byte of the mapping?

It shows the same backing file so of course uses the same offset as
the file on disk.

Thanks.

-- 
tejun