fix pre-dispatch PoV underweight for ParasInherent

[ordian]

This should fix the error log related to PoV pre-dispatch weight being lower than post-dispatch for ParasInherent:

ERROR tokio-runtime-worker runtime::frame-support: Post dispatch weight is greater than pre dispatch weight. Pre dispatch weight may underestimating the actual weight. Greater post dispatch weight components are ignored.
                                        Pre dispatch weight: Weight { ref_time: 47793353978, proof_size: 1019 },
                                        Post dispatch weight: Weight { ref_time: 5030321719, proof_size: 135395 }

[ordian]

/cmd prdoc --audience runtime_dev --bump patch

[alindima]

Thank you!

Just to make sure, it's ok to do this because we rely on the post-dispatch measured weight being correct?

[gui1117]

Thank you!

Just to make sure, it's ok to do this because we rely on the post-dispatch measured weight being correct?

I think the reason is that this is only used in polkadot relay chain. In polkadot relay the usage for PoV doesn't matter.

[ordian]

Just to make sure, it's ok to do this because we rely on the post-dispatch measured weight being correct?

I think the reason is that this is only used in polkadot relay chain. In polkadot relay the usage for PoV doesn't matter.

Yes, both are true. Post-dispatch should correct the actually used weight and relay chain PoV limit is set to u64::MAX anyway, so we should be constrained by block size only.

With AHM and ParasInherent eventually being the only extrinsic, the weight limitation and filtering should matter even less. We should be able to fit all bitfields and maybe limiting disputes by some number should suffice.