ref: 383a92cb9963a04aea7b0c31048a7bb1eabb9476
parent: a742b7cb40538d0bdd5d4420a3478f7c7d60f157
author: Ori Bernstein <ori@eigenstate.org>
date: Tue Jul 19 01:24:29 EDT 2022
quiesce: fix race if the writer deferred frees between the quiesce and grabbing/trimming the freelist, we could free blocks from the next epoch, which would be bad.