From: Eric W. Biederman <ebiederm@xmission.com>
Date: Tue, 7 Oct 2014 23:22:52 +0000 (-0700)
Subject: mnt: Move the clear of MNT_LOCKED from copy_tree to it's callers.
X-Git-Tag: omap-for-v3.19/fixes-rc1~48^2~13
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8486a7882b5ba906992fd78bbfcefaae7fe285cc;p=pandora-kernel.git

mnt: Move the clear of MNT_LOCKED from copy_tree to it's callers.

Clear MNT_LOCKED in the callers of copy_tree except copy_mnt_ns, and
collect_mounts.  In copy_mnt_ns it is necessary to create an exact
copy of a mount tree, so not clearing MNT_LOCKED is important.
Similarly collect_mounts is used to take a snapshot of the mount tree
for audit logging purposes and auditing using a faithful copy of the
tree is important.

This becomes particularly significant when we start setting MNT_LOCKED
on rootfs to prevent it from being unmounted.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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