GET_SIT_VBLOCKS
se->valid_blocks = GET_SIT_VBLOCKS(rs);
se->ckpt_valid_blocks = GET_SIT_VBLOCKS(rs);
if (unlikely(GET_SIT_VBLOCKS(raw_sit) != valid_blocks)) {
GET_SIT_VBLOCKS(raw_sit), valid_blocks);
if (unlikely(GET_SIT_VBLOCKS(raw_sit) > usable_blks_per_seg
GET_SIT_VBLOCKS(raw_sit), segno);