__blk_add_trace
__blk_add_trace(bt, blk_rq_trace_sector(rq), nr_bytes, rq->cmd_flags,
__blk_add_trace(bt, bio->bi_iter.bi_sector, bio->bi_iter.bi_size,
__blk_add_trace(bt, 0, 0, 0, BLK_TA_PLUG, 0, 0, NULL, 0);
__blk_add_trace(bt, 0, 0, 0, what, 0, sizeof(rpdu), &rpdu, 0);
__blk_add_trace(bt, sector, sectors << SECTOR_SHIFT, 0,
__blk_add_trace(bt, sector, sectors << SECTOR_SHIFT, 0,
__blk_add_trace(bt, bio->bi_iter.bi_sector,
__blk_add_trace(bt, bio->bi_iter.bi_sector, bio->bi_iter.bi_size,
__blk_add_trace(bt, blk_rq_pos(rq), blk_rq_bytes(rq),
__blk_add_trace(bt, blk_rq_trace_sector(rq), blk_rq_bytes(rq), 0,