Messages in this thread | | | Date | Tue, 14 Dec 2021 08:29:59 +0100 | From | Greg Kroah-Hartman <> | Subject | Re: [PATCH v3 3/3] blk-crypto: show crypto capabilities in sysfs |
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On Mon, Dec 13, 2021 at 09:04:29PM -0800, Bart Van Assche wrote: > 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
That's fine, there is no problem there.
That output is the "correct" way to show a list of options and the one that is currently selected in a sysfs file as I thought I said earlier in this thread.
> 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.
Very true, do not change this file format.
thanks,
greg k-h
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