UNIQUE_THRESHOLD   44 gc/allchblk.c  # define N_HBLK_FLS (HUGE_THRESHOLD - UNIQUE_THRESHOLD)/FL_COMPRESSION \
UNIQUE_THRESHOLD   45 gc/allchblk.c  				 + UNIQUE_THRESHOLD
UNIQUE_THRESHOLD   86 gc/allchblk.c      if (blocks_needed <= UNIQUE_THRESHOLD) return blocks_needed;
UNIQUE_THRESHOLD   88 gc/allchblk.c      return (blocks_needed - UNIQUE_THRESHOLD)/FL_COMPRESSION
UNIQUE_THRESHOLD   89 gc/allchblk.c  					+ UNIQUE_THRESHOLD;