On 12/13/21 9:04 PM, Bart Van Assche wrote: > External email: Use caution opening links or attachments > > > On 12/11/21 02:50, Greg Kroah-Hartman wrote: >> On Fri, Dec 10, 2021 at 09:29:41AM -0800, Bart Van Assche wrote: >>> (b) No other block layer sysfs attribute follows this encoding scheme. >> >> Then follow what they do. Do they have multiple values in a single >> file? If so, they are broken and we should change that. > > Hi Greg, > > The only other block layer sysfs attribute I know of that reports > multiple values is the queue/scheduler attribute. Here is an example of > the output that can be produced by reading that attribute: > > # cat /sys/block/sda/queue/scheduler > [mq-deadline] kyber bfq none > > I don't think that changing the behavior of that attribute is an option > because that would break existing user space software, e.g. the > https://github.com/osandov/blktests/ test suite. > > Thanks, > > Bart. If possible please avoid changing these values.
