> At least that way we could always steal more if we want or return some, as
> long as we're careful about when we do it. That would open the door to having
> these parameters be dynamically adjustable. That alone would be worthwhile
> even if we bypass all bells and whistles of the buffer manager.
>
One hitch, though, is that asynchronous commit could consume big chunks
of shared_buffers. So we might still need a limit for people who are
using async.
--Josh
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