Greetings, * Andres Freund (and...@anarazel.de) wrote: > On 2021-05-25 17:22:43 -0400, Stephen Frost wrote: > > Err, to be clear, I was saying that we could exclude the hint bits > > *entirely* from what's being encrypted and I don't think that would be a > > huge issue. > > It's a *huge* issue. For one, the computational effort of doing so would > be a problem. But there's a more fundamental issue: We don't even know > the type of the page at the time we write data out! We can't do a lookup > of pg_class in the checkpointer to see whether the page is a heap page > where we need to mask out hint bits.
Yeah, I hadn't been contemplating the challenge in figuring out if the changes were hint bit changes or if it was some other page- merely reflecting on the question of if hint bits, themselves, could possibly be excluded. Thanks, Stephen
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