On 2018-06-27 13:44:03 +1200, Thomas Munro wrote: > On further reflection, on the basis that it's the most conservative > change, +1 for Fujii-san's close-in-reverse-order idea. We should > reconsider that data structure for 12; there doesn't seems to be a > good reason to carry all those comments warning about performance when > the O(1) version is shorter than the comments.
Agreed on this. I like the dlist version more than the earlier one, so let's fix it up, for v12+. But regardless I'd argue that we consider disabling that infrastructure while in recovery - it's just unnecessary. Greetings, Andres Freund