toast tables on system catalogs

Hi,

Someone on IRC recently noticed that you can't grant USAGE privileges on
a table to a large number of roles. (My experiment says 2466 works,
2467 doesn't).

Of course, this is wrong and all that. I wrote a blog article about
this:
http://www.commandprompt.com/blogs/alvaro_herrera/2011/03/grant_schema_usage_to_2500_users_no_can_do/

The reason for this is that pg_namespace doesn't have a toast table; and
neither do other 10 catalogs that have "acl" columns:

pg_attribute
pg_default_acl
pg_largeobject_metadata
pg_pltemplate
pg_tablespace
pg_class
pg_foreign_data_wrapper
pg_namespace
pg_foreign_server
pg_user_mapping
pg_language

select relname, reltoastrelid
from pg_class
where oid in (
select attrelid
from pg_attribute
where (attname like '%acl' and atttypid = 'aclitem[]'::regtype) or
(attname like '%options' and atttypid = 'text[]'::regtype))
and relkind = 'r';

Strangely, we made pg_database have a toast table, and the only reason
for this is datacl. Should we create toast tables for the remaining
catalogs?

--
Álvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>