[CF 5919] v5 - Eagerly evict bulkwrite strategy ring

This branch was automatically generated by a robot using patches from an
email thread registered at:

https://commitfest.postgresql.org/patch/5919

The branch will be overwritten each time a new patch version is posted to
the thread, and also periodically to check for bitrot caused by changes
on the master branch.

Patch(es): https://www.postgresql.org/message-id/CAAKRu_Y9WeWb5fu7Aibh-qGZuFYq3=57Y4ptSrzLYCnRWDHCow@mail.gmail.com
Author(s): Melanie Plageman

Author: Commitfest Bot