Messages in this thread | | | Date | Mon, 13 Dec 2021 21:04:29 -0800 | Subject | Re: [PATCH v3 3/3] blk-crypto: show crypto capabilities in sysfs | From | Bart Van Assche <> |
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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.
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