Mason <chris.mason@oracle.com> 1335549314 -0400

Btrfs: Fix space checking during fs resize

Fix out-of-space checking, addressing a warning and potential resource
leak when resizing the filesystem down while allocating blocks.

Signed-off-by: Daniel J Blueman <daniel@quora.org>
Reviewed-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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