NVMe: Check for DMA mapping failure (1974b1ae) · Commits · 戴 / test

drivers/block/nvme.c

+7 −1

Original line number	Diff line number	Diff line
		@@ -451,7 +451,8 @@ static int nvme_submit_bio_queue(struct nvme_queue nvmeq, struct nvme_ns ns,
		dma_dir = DMA_FROM_DEVICE;
		}

		nvme_map_bio(nvmeq->q_dmadev, nbio, bio, dma_dir, psegs);
		if (nvme_map_bio(nvmeq->q_dmadev, nbio, bio, dma_dir, psegs) == 0)
		goto mapping_failed;

		cmnd->rw.flags = 1;
		cmnd->rw.command_id = cmdid;
		@@ -471,6 +472,11 @@ static int nvme_submit_bio_queue(struct nvme_queue nvmeq, struct nvme_ns ns,

		return 0;

		mapping_failed:
		free_nbio(nvmeq, nbio);
		bio_endio(bio, -ENOMEM);
		return 0;

		free_nbio:
		free_nbio(nvmeq, nbio);
		congestion: