Fujii Masao <masao.fujii@gmail.com> writes:
> ISTM that writing an invalid-page table to the disk for every restartpoints is
> better approach.
I still say that's uncalled-for overkill. The invalid-page table is not
necessary for recovery, it's only a debugging cross-check. You're more
likely to introduce bugs than fix any by adding a mechanism like that.
regards, tom lane