Full list of operations that constitute a "maintenance" operation?

[Lance Luvaul]

Hi all, I've read on the Postgres documentation for 'maintenance_work_mem'
that VACUUM, CREATE INDEX, and ALTER TABLE ADD FOREIGN KEY are considered
maintenance operations, but are there others?  For example I use ALTER
TABLE ADD COLUMN and ALTER TABLE SET LOGGED in my scripts... are
they maintenance operations that would cause a maintenance_work_mem-sized
chunk of memory (or more than 1 such chunk) to be allocated?  Is there a
complete list somewhere?  Thanks!