Symbol: blk_rq_dma_unmap
drivers/nvme/host/pci.c
913
if (!blk_rq_dma_unmap(req, dma_dev, &iod->meta_dma_state,
drivers/nvme/host/pci.c
950
if (!blk_rq_dma_unmap(req, dma_dev, &iod->dma_state, iod->total_len,