Re: [PATCH v8] NVMe: convert to blk-mq

[Keith Busch]

On Fri, 13 Jun 2014, Matias BjÃrling wrote:
> This converts the current NVMe driver to utilize the blk-mq layer.

> static void nvme_reset_notify(struct pci_dev *pdev, bool prepare)
> {
> -       struct nvme_dev *dev = pci_get_drvdata(pdev);
> +	struct nvme_dev *dev = pci_get_drvdata(pdev);
>
> -       if (prepare)
> -               nvme_dev_shutdown(dev);
> -       else
> -               nvme_dev_resume(dev);
> +	spin_lock(&dev_list_lock);
> +	if (prepare)
> +		list_del_init(&dev->node);
> +	else
> +		list_add(&dev->node, &dev_list);
> +	spin_unlock(&dev_list_lock);
> }
> +		if (nvme_create_queue(dev->queues[i], i))
> 			break;
> }

The above change was just error injection test code so you can cause
a device to become unresponsive and trigger the timeout handling.

This latest is otherwise stable on my dev machine.