From 3e01cee3b980f96463cb6f378ab05303a99903d9 Mon Sep 17 00:00:00 2001
From: Miklos Szeredi <mszeredi@suse.cz>
Date: Sat, 13 Dec 2014 00:59:45 +0100
Subject: [PATCH] ovl: check whiteout on lowest layer as well

Not checking whiteouts on lowest layer was an optimization (there's nothing
to white out there), but it could result in inconsitent behavior when a
layer previously used as upper/middle is later used as lowest.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
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