Speeding up Linux disk encryption
https://blog.cloudflare.com/speeding-up-linux-disk-encryption/ (https://blog.cloudflare.com/speeding-up-linux-disk-encryption/)
Backup: https://web.archive.org/web/20200326012243/https://blog.cloudflare.com/speeding-up-linux-disk-encryption/ (https://web.archive.org/web/20200326012243/https://blog.cloudflare.com/speeding-up-linux-disk-encryption/)
Backup 2: http://archive.is/Z4gHV (http://archive.is/Z4gHV)