Re: [PATCH v4 4/4] commit-graph: new filter ver. that fixes murmur3

Derrick Stolee [off-list ref] writes:

However, I think the 'settings->hash_version' is the wrong place
to look for the condition. We should be getting this value from the
commit-graph we are reading. (More on this later.)
...

quoted

-	if (hash_version != 1)
+	if (hash_version != d->commit_graph_changed_paths_version)
 		return 0;

This makes it appear like we cannot read a commit-graph that has
a Bloom filter version that doesn't match the configured version.

This seems incorrect. If we want to configure to _write_ v2, we
should still be able to _read_ v1 concurrently until those v2
filters are written.

Good eyes.  Thanks for carefully reading.