On Wed, 2018-12-05 at 22:17 +0800, Weiping Zhang wrote:
> +Description:
> + io_timeout is a request’s timeouts at block layer in
> + milliseconds. When the underlying driver starts processing
> + a request, the generic block layer will start a timer, if
> + this request cannot be completed in io_timeout milliseconds,
> + a timeout event will occur.
Sorry but I think this description is still somewhat confusing. How about
changing that description into the following?
io_timeout is the request timeout in milliseconds. If a request does not
complete in this time then the block driver timeout handler is invoked.
That timeout handler can decide to retry the request, to fail it or to
start a device recovery strategy.
Bart.
