Round a bus count up to a whole STRIP_QUANTUM. Already-whole counts pass through
unchanged (20 -> 20, 8 -> 8); a partial quantum is filled (10 -> 12, 5 -> 8).
Rounding is up, never down: over-allocating leaves harmless empty buses, whereas
dropping a tier below the requested size would break restoring a session that used them.
Round a bus count up to a whole STRIP_QUANTUM. Already-whole counts pass through unchanged (
20 -> 20,8 -> 8); a partial quantum is filled (10 -> 12,5 -> 8).Rounding is up, never down: over-allocating leaves harmless empty buses, whereas dropping a tier below the requested size would break restoring a session that used them.