/* NB: the following does not "round up" for non-power-of-2 'size'; but this is OK because many other things will break if 'size' is irregular...  */
static int get_blk_adr_bytes(u64 size, u32 writesize)
/* NB: the following does not "round up" for non-power-of-2 'size'; but this is OK because many other things will break if 'size' is irregular...  */
static int get_blk_adr_bytes(u64 size, u32 writesize)
{
	return ALIGN(ilog2(size) - ilog2(writesize), 8) >> 3;
}