These use the same scheme as the pre-existing mapping of the XFS
RESVP ioctls to ->falloc, so just extend it and remove the XFS
implementation.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
[darrick: fix compile error on s390]
Reviewed-by: NDarrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com>