tail_block_offset_t
tail_block_offset_t tail_block_offset;
tail_block_offset_t offset;
tail_block_offset_t last_commit_point =
tail_block_offset_t tail_block = ((last_commit_point == 0) ?
(tail_block_offset_t)(journal->size - 1) :
tail_block_offset_t last_commit_point;
tail_block_offset_t end_index = (tail - 1) % journal->size;
tail_block_offset_t head_index = head % journal->size;
tail_block_offset_t tail_block_offset,