From c39a2a3018f8065cb5ea38b0314c1bbedb2cfa0d Mon Sep 17 00:00:00 2001
From: Aristeu Rozanski <aris@redhat.com>
Date: Fri, 15 Feb 2013 11:55:45 -0500
Subject: [PATCH] devcg: prepare may_access() for hierarchy support

Currently may_access() is only able to verify if an exception is valid for the
current cgroup, which has the same behavior. With hierarchy, it'll be also used
to verify if a cgroup local exception is valid towards its cgroup parent, which
might have different behavior.

v2:
- updated patch description
- rebased on top of a new patch to expand the may_access() logic to make it
  more clear
- fixed argument description order in may_access()

Acked-by: Tejun Heo <tj@kernel.org>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Aristeu Rozanski <aris@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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