ref: f8236f161ce449a53c4f4a8dff312b756cbebde8
parent: ee29d2cef8988a46ce7819172cc382f603832232
author: Ori Bernstein <ori@eigenstate.org>
date: Thu Nov 30 18:23:47 EST 2023
fs: be safer about snap deletion we can get the same block affected by messages in the tree multiple times; use a proper iterator to clean up our data blocks, instead of walking them naively.