NVMe: Translate NVMe status to errno (b4ff9c8d) · Commits · 戴 / test

This returns a more appropriate error for the "capacity exceeded" status. In case other NVMe statuses have a better errno, this patch adds a convience function to translate an NVMe status code to an errno for IO commands, defaulting to the current -EIO. Signed-off-by:

Keith Busch <keith.busch@intel.com> Signed-off-by:

Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by:

Jens Axboe <axboe@fb.com>

drivers/block/nvme-core.c

+13 −1

Original line number	Diff line number	Diff line
		@@ -450,6 +450,18 @@ static void nvme_end_io_acct(struct bio *bio, unsigned long start_time)
		}
		}

		static int nvme_error_status(u16 status)
		{
		switch (status & 0x7ff) {
		case NVME_SC_SUCCESS:
		return 0;
		case NVME_SC_CAP_EXCEEDED:
		return -ENOSPC;
		default:
		return -EIO;
		}
		}

		static void bio_completion(struct nvme_queue nvmeq, void ctx,
		struct nvme_completion *cqe)
		{
		@@ -469,7 +481,7 @@ static void bio_completion(struct nvme_queue nvmeq, void ctx,
		wake_up(&nvmeq->sq_full);
		return;
		}
		error = -EIO;
		error = nvme_error_status(status);
		}
		if (iod->nents) {
		dma_unmap_sg(nvmeq->q_dmadev, iod->sg, iod->nents,

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