Wait Before You Sync

If you're gonna do that, might as well use sync_file_range on Linux https://lkml.indiana.edu/hypermail/linux/kernel/0904.0/01076...

Reminds me of Rethink the Sync (Ed Nightingale, Kaushik Veeraraghavan, Peter M. Chen, Jason Flinn) https://dl.acm.org/doi/10.1145/1394441.1394442