Re: [PATCH v7 1/9] block: Keyslot Manager for Inline Encryption

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On Thu, Feb 27, 2020 at 01:25:12PM -0800, Satya Tangirala wrote:
> I think it does make some sense at least to make the keyslot type opaque
> to most of the system other than the driver itself (the driver will now
> have to call a function like blk_ksm_slot_idx_for_keyslot to actually get
> a keyslot number at the end of the day). Also this way, the keyslot manager
> can verify that the keyslot passed to blk_ksm_put_slot is actually part of
> that keyslot manager (and that somebody isn't releasing a slot number that
> was actually acquired from a different keyslot manager). I don't think
> it's much benefit or loss either way, but I already switched to passing
> pointers to struct keyslot around instead of ints, so I'll keep it that
> way unless you strongly feel that using ints in this case is better
> than struct keyslot *.

Exactly.  This provides a little type safety.



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