Allocating two bytes at a block boundary with fallocate should allocate
both blocks involved. Test this by writing data to both bytes
afterwards and see whether the on-disk size increases (it should not).
This is a regression test for the kernel patch "xfs: Fix tail rounding
in xfs_alloc_file_space()".
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
Max Reitz