From: Hannes Reinecke hare@suse.de
[ Upstream commit d95c1f4179a7f3ea8aa728ed00252a8ed0f8158f ]
We only should remove namespaces when we get fatal error back from the device or when the namespace IDs have changed. So instead of painfully masking out error numbers which might indicate that the error should be ignored we could use an NVME status code to indicated when the namespace should be removed. That simplifies the final logic and makes it less error-prone.
Signed-off-by: Hannes Reinecke hare@suse.de Reviewed-by: Keith Busch kbusch@kernel.org Reviewed-by: Sagi Grimberg sagi@grimberg.me Reviewed-by: Daniel Wagner dwagner@suse.de Signed-off-by: Christoph Hellwig hch@lst.de Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/nvme/host/core.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 129e2b6bd6d3..1d6576b6bda3 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -1425,7 +1425,7 @@ static int nvme_identify_ns(struct nvme_ctrl *ctrl, unsigned nsid, goto out_free_id; }
- error = -ENODEV; + error = NVME_SC_INVALID_NS | NVME_SC_DNR; if ((*id)->ncap == 0) /* namespace not allocated or attached */ goto out_free_id;
@@ -4023,7 +4023,7 @@ static void nvme_ns_remove_by_nsid(struct nvme_ctrl *ctrl, u32 nsid) static void nvme_validate_ns(struct nvme_ns *ns, struct nvme_ns_ids *ids) { struct nvme_id_ns *id; - int ret = -ENODEV; + int ret = NVME_SC_INVALID_NS | NVME_SC_DNR;
if (test_bit(NVME_NS_DEAD, &ns->flags)) goto out; @@ -4032,7 +4032,7 @@ static void nvme_validate_ns(struct nvme_ns *ns, struct nvme_ns_ids *ids) if (ret) goto out;
- ret = -ENODEV; + ret = NVME_SC_INVALID_NS | NVME_SC_DNR; if (!nvme_ns_ids_equal(&ns->head->ids, ids)) { dev_err(ns->ctrl->device, "identifiers changed for nsid %d\n", ns->head->ns_id); @@ -4050,7 +4050,7 @@ static void nvme_validate_ns(struct nvme_ns *ns, struct nvme_ns_ids *ids) * * TODO: we should probably schedule a delayed retry here. */ - if (ret && ret != -ENOMEM && !(ret > 0 && !(ret & NVME_SC_DNR))) + if (ret > 0 && (ret & NVME_SC_DNR)) nvme_ns_remove(ns); }