From 733f4fbbc1083aa343da739f46ee839705d6cfe3 Mon Sep 17 00:00:00 2001
From: Stefan Behrens <sbehrens@giantdisaster.de>
Date: Fri, 25 May 2012 16:06:10 +0200
Subject: [PATCH] Btrfs: read device stats on mount, write modified ones during
 commit

The device statistics are written into the device tree with each
transaction commit. Only modified statistics are written.
When a filesystem is mounted, the device statistics for each involved
device are read from the device tree and used to initialize the
counters.

Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
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Reading git-format-patch failed