The pg_prewarm function provided by this extension is PARALLEL SAFE. Andreas Karlsson
Prominent binaries already had this metadata. A handful of minor binaries, such as pg_regress.exe, still lack it; efforts to eliminate such exceptions are welcome. Michael Paquier, reviewed by MauMau.
Patch by me. Review by Álvaro Herrera, Amit Kapila, Jeff Janes, Gurjeet Singh, and others.