Re: [PATCH v3 3/3] blk-crypto: show crypto capabilities in sysfs

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On 12/9/21 10:42 PM, Greg Kroah-Hartman wrote:
A single hex value makes sense to me.

Hi Greg,

I'm not enthusiast about this approach because:
(a) A single hex value can be confused with a number. Reporting a bitfield in
    hex format is not sufficient to prevent confusion with a number.
(b) No other block layer sysfs attribute follows this encoding scheme.
(c) This encoding enforces the restriction that data unit sizes are a power of
    two. Is there anything fundamental in encryption that restricts data unit
    sizes to a power of two? I don't know the answer myself.

Thanks,

Bart.



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