On 29.11.18 г. 18:43 ч., Jean Fobe wrote:
> Hi all,
> I've been studying LZ4 and other compression algorithms on the
> kernel, and seen other projects such as zram and ubifs using the
> crypto api. Is there a technical reason for not using the crypto api
> for compression (and possibly for encryption) in btrfs?
> I did not find any design/technical implementation choices in
> btrfs development in the developer's FAQ on the wiki. If I completely
> missed it, could someone point me in the right direction?
> Lastly, if there is no technical reason for this, would it be
> something interesting to have implemented?
I personally think it would be better if btrfs' exploited the generic
framework. And in fact when you look at zstd, btrfs does use the
generic, low-level ZSTD routines but not the crypto library wrappers. If
I were I'd try and convert zstd (since it's the most recently added
algorithm) to using the crypto layer to see if there are any lurking
problems.
>
> Best regards
>
