SLICE_LOW_SHIFT
#define SLICE_NUM_LOW (SLICE_LOW_TOP >> SLICE_LOW_SHIFT)
#define GET_LOW_SLICE_INDEX(addr) ((addr) >> SLICE_LOW_SHIFT)
1ul << SLICE_LOW_SHIFT);
*boundary_addr = (slice + end) << SLICE_LOW_SHIFT;
return !slice_area_is_free(mm, slice << SLICE_LOW_SHIFT,