From 563100bd1390b24f8fd03d9e1bbe20e93e1d65b3 Mon Sep 17 00:00:00 2001
From: Xiaochuan-Xu <xiaochuan-xu@cqu.edu.cn>
Date: Tue, 9 Dec 2008 19:44:12 +0800
Subject: [PATCH] UBI: prepare for protection tree improvements

This patch modifies @struct ubi_wl_entry and adds union which
contains only one element so far. This is just a preparation
for further changes which will kill the protection tree and
make UBI use a list instead.

Signed-off-by: Xiaochuan-Xu <xiaochuan-xu@cqu.edu.cn>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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