Re: Online checksums verification in the backend

On Tue, Oct 27, 2020 at 07:47:19PM +0800, Julien Rouhaud wrote:
> I think it's also worth noting that the IOLock is now acquired just
> before getting the buffer state, and released after the read (or after
> finding that the buffer is dirty).  This is consistent with how it's
> done elsewhere, so I'm fine.

Consistency is the point.  This API should be safe to use by design.
I have done some extra performance tests similar to what I did
upthread, and this version showed similar numbers.

> Other than that I'm quite happy with the changes you made, thanks a lot!

Thanks for confirming.  I have gone through the whole set today,
splitted the thing into two commits and applied them.  We had
buildfarm member florican complain about a mistake in one of the
GetDatum() calls that I took care of already, and there is nothing
else on my radar.
--
Michael