Heikki Linnakangas wrote:

Attached is a fix for that. It adds a flag to each heap page that indicates that "there isn't any free line pointers on this page, so don't bother trying". Heap pages haven't had any heap-specific per-page data before, so this patch adds a HeapPageOpaqueData-struct that's stored in the special space.

I would really like this change. I was thinking on similar lines to optimize
some of the HOT code paths


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