linux-kernel - [PATCH][v3.13.y-ckt]umount: Do not allow unmounting rootfs.

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Date:	Fri, 12 Feb 2016 14:58:43 -0500
From:	Joseph Salisbury <joseph.salisbury@...onical.com>
To:	Kamal Mostafa <kamal.mostafa@...onical.com>
Cc:	ebiederm@...ssion.com, Alexander Viro <viro@...iv.linux.org.uk>,
	linux-fsdevel@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	"stable@...r.kernel.org" <stable@...r.kernel.org>
Subject: [PATCH][v3.13.y-ckt]umount: Do not allow unmounting rootfs.

Hello,

Please consider including mainline commit
da362b09e42ee0bcaf0356afee6078b4f324baff in the next v3.13.y-ckt
release.  It was
included in the mainline tree as of v3.19-rc1.  It has been tested and
confirmed to resolve http://bugs.launchpad.net/bugs/1541313 .

commit da362b09e42ee0bcaf0356afee6078b4f324baff
Author: Eric W. Biederman <ebiederm@...ssion.com>
Date:   Tue Oct 7 12:19:53 2014 -0700

    umount: Do not allow unmounting rootfs.


Sincerely,

Joseph Salisbury