various: replace _get_block_size with _get_file_block_size when needed
The _get_file_block_size helper was added so that tests could find out
the size of a fundamental unit of allocation for a given file, which is
necessary for certain fallocate and clonerange tests.
On certain filesystem configurations (ocfs2 with clusters, xfs with a
large rt extent size), this is /not/ the same as the filesystem block
size, and these tests will fail. Fix them to use the correct helper.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>