Enabling High-Performance and Secure Userspace NVM File Systems with the Trio Architecture

Userspace library file systems (LibFSes) promise to unleash the performance potential of non-volatile memory (NVM) by directly accessing it and enabling unprivileged applications to customize their LibFSes to their workloads. Unfortunately, such benefits pose a significant challenge to ensuring metadata integrity. Existing works either underutilize NVM's performance or forgo critical file system security guarantees.