Re: [RFC PATCH] dm-inlinecrypt: add target for inline block device encryption

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On Thu, Oct 03, 2024 at 05:41:52PM -0700, Eric Biggers wrote:
> From: Eric Biggers <ebiggers@xxxxxxxxxx>
> 
> Add a new device-mapper target "dm-inlinecrypt" that is similar to
> dm-crypt but uses the blk-crypto API instead of the regular crypto API.
> This allows it to take advantage of inline encryption hardware such as
> that commonly built into UFS host controllers.
> 
> The table syntax matches dm-crypt's, but for now only a stripped-down
> set of parameters is supported.  For example, for now AES-256-XTS is the
> only supported cipher.

Maybe I'm stepping into a mine-field here, but if this simply uses
blk-crypto to accellerate a subset of dm-crypt, why isn't dm-crypt
simply enhanced to use blk-crypto when available?
compatible,

> +EXPORT_SYMBOL_GPL(bio_crypt_set_ctx);

Please split the exports in a separate subsystem into a separate prep
patch, documenting why it makes sense to have these as exported APIs.





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