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SubjectRe: [PATCH v3 3/3] blk-crypto: show crypto capabilities in sysfs
Date
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.


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