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From: Shea Levy <shea@shealevy.com>
To: Alexander Viro <viro@zeniv.linux.org.uk>, linux-fsdevel@vger.kernel.org,
        linux-kernel@vger.kernel.org
Cc: Shea Levy <shea@shealevy.com>
Subject: [PATCH 0/2] vfs: Report a mount r/o if the superblock is
Date: Thu, 14 Mar 2013 12:09:18 -0400
Message-Id: <1363277360-1947-1-git-send-email-shea@shealevy.com>
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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@shealevy.com>