From 667e7d94a1683661cff5fe9a0fa0d7f8fdd2c007 Mon Sep 17 00:00:00 2001
From: Chris Mason <chris.mason@fusionio.com>
Date: Tue, 7 May 2013 11:00:13 -0400
Subject: [PATCH] Btrfs: allow superblock mismatch from older mkfs

We've added new checks to make sure the super block crc is correct
during mount.  A fresh filesystem from an older mkfs won't have the
crc set.  This adds a warning when it finds a newly created filesystem
but doesn't fail the mount.

Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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