From b15c592de37ed9d71499a3b8a750d1b235fcba3d Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Sun, 3 Mar 2019 08:52:21 -0700 Subject: nvme-pci: only call nvme_unmap_data for requests transferring data This mirrors how nvme_map_pci is called and will allow simplifying some checks in nvme_unmap_pci later on. Signed-off-by: Christoph Hellwig Reviewed-by: Keith Busch Reviewed-by: Sagi Grimberg Reviewed-by: Chaitanya Kulkarni --- drivers/nvme/host/pci.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/nvme') diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index de199aff8d05..030ee94452dd 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -929,7 +929,8 @@ static void nvme_pci_complete_rq(struct request *req) struct nvme_iod *iod = blk_mq_rq_to_pdu(req); nvme_cleanup_cmd(req); - nvme_unmap_data(iod->nvmeq->dev, req); + if (blk_rq_nr_phys_segments(req)) + nvme_unmap_data(iod->nvmeq->dev, req); nvme_complete_rq(req); } -- cgit v1.2.3