[PATCHv2] block: always allocate integrity buffer

[Christoph Hellwig]

On Wed, May 07, 2025 at 06:31:33PM -0400, Martin K. Petersen wrote:
> I know that we can't have one without the other currently but there's
> some cognitive PI dissonance wrt. keying off BIP_CHECK_GUARD only.
> 
> Maybe worth considering:
> 
> #define BIP_CHECK_FLAGS (BIP_CHECK_GUARD | BIP_CHECK_REFTAG | BIP_CHECK_APPTAG)
> 
> and validating against that? Or a bip_should_check() wrapper.

I'd vote for the helper.