Re: Allow pg_signal_backend members to use pg_log_backend_memory_stats().

Hi,

On 2021-10-25 13:42:07 -0700, Jeff Davis wrote:
> Good idea. Attached a patch to remove the superuser check on
> pg_log_backend_memory_contexts(), except in the case when trying to log
> memory contexts of a superuser backend.

I don't get the reasoning behind the "except ..." logic. What does this
actually protect against? A reasonable use case for this feature is is to
monitor memory usage of all backends, and this restriction practially requires
to still use a security definer function.

Greetings,

Andres Freund