pg_dump LOCK TABLE ONLY question

Hi.

I'm running pg_dump constrained to one schema. It appears that pg_dump runs

"LOCK TABLE %s IN ACCESS SHARE MODE" for each table.

Naturally it makes sense, but...

This schema has a table that serves as parent for thousands of child
tables (via INHERITS).

So effectively, to dump this schema, I have to LOCK all these tables
not only parent.

pg_dump does it automatically, I checked in current trunk - it does
not add ONLY keyword. Should it?

I wonder if it it counts as a bug.
If not a bug, maybe it counts as a feature request?

Thanks.