I think we need a check for the presence of a timeout method and only show this attribute if the driver actually supports block level timeouts.
- [PATCH v3] block: add io timeout to sysfs Weiping Zhang
- Re: [PATCH v3] block: add io timeout to sysfs Jens Axboe
- Re: [PATCH v3] block: add io timeout to sysfs Christoph Hellwig