Rounding up allocations in the allocation path caused test regressions,
so now just round in the availability path.
Signed-off-by: NDaniel Phillips <daniel.phillips@amd.com>
Reviewed-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>