xfs_io: fix copy_file_range length argument overflow

Don't let the length argument overflow size_t.  This is mostly a problem
on 32-bit platforms.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>

1 file changed