Re: [PATCH v2 1/8] block: introduce blk_ksm_is_empty()

[Christoph Hellwig]

On Thu, Mar 25, 2021 at 09:26:02PM +0000, Satya Tangirala wrote:
> This function checks if a given keyslot manager supports any encryption
> mode/data unit size combination (and returns true if there is no such
> supported combination). Helps clean up code a little.

The name sounds a little strange to me, but the functionality looks
ok.  A kerneldoc comment might be useful to describe what it does so
that we don't have to rely on the name alone.