From 33b4d47f5e24b986f486d7de9a2df915ad1fdfbc Mon Sep 17 00:00:00 2001
From: Chris Mason <chris.mason@oracle.com>
Date: Tue, 22 Sep 2009 14:45:50 -0400
Subject: [PATCH] Btrfs: deal with NULL space info

After a balance it is briefly possible for the space info
field in the inode to be NULL.  This adds some checks
to make sure things properly deal with the NULL value.


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