From b4ff9c8ddb6f0cec99a53ab26a5aa2ed0162c472 Mon Sep 17 00:00:00 2001 From: Keith Busch Date: Fri, 29 Aug 2014 09:06:12 -0600 Subject: [PATCH] NVMe: Translate NVMe status to errno 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 Signed-off-by: Matthew Wilcox Signed-off-by: Jens Axboe --- drivers/block/nvme-core.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c index 37f22b6bb009..3153692da288 100644 --- a/drivers/block/nvme-core.c +++ b/drivers/block/nvme-core.c @@ -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,