From 91d452faa8b9bc0e1c9c3cd8e0feeca796344982 Mon Sep 17 00:00:00 2001
From: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Date: Sat, 19 Apr 2008 20:44:31 +0300
Subject: [PATCH] UBI: fix mean EC calculation

(a + b) / (c + d) != a / c + b / d. The old code errornously
assumed this incorrect formuld. Instead, just sum all erase
counters in a 64-bit variable and divide to the number of EBs
at the end.

Thanks to Adrian Hunter for pointing this out.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Reading git-format-patch failed