linux-kernel - Re: [PATCH 0/2] vfs: Report a mount r/o if the superblock is

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Date:	Thu, 21 Mar 2013 21:24:51 -0400
From:	Shea Levy <shea@...alevy.com>
To:	Alexander Viro <viro@...iv.linux.org.uk>,
	"linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Cc:	Shea Levy <shea@...alevy.com>
Subject: Re: [PATCH 0/2] vfs: Report a mount r/o if the superblock is

Any feedback on this?

On Mar 14, 2013, at 12:09 PM, Shea Levy <shea@...alevy.com> wrote:

> By calling mount(2) with MS_REMOUNT | MS_BIND on a non-bind readonly
> mountpoint, it is possible to have a readonly mount without MNT_READONLY
> in its mnt_flags. Currently, /proc/<pid>/mountinfo and statfs will
> report such a mount as r/w, even though for all intents and purposes it
> is still readonly.
> 
> This patchset fixes show_mountinfo and statfs to report such mounts as
> readonly.
> 
> Signed-off-by: Shea Levy <shea@...alevy.com>
> 
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