xfs: remove the ISUNWRITTEN macro

Opencoding the trivial checks makes it much easier to read (and grep..).

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
3 files changed