[$] An introduction to EROFS

Gao Xiang gave an overview of the Extended Read-Only FileSystem (EROFS) in a filesystem session at the2023 Linux Storage, Filesystem,Memory-Management and BPF Summit. EROFS was addedto Linux 5.4 in 2019 and has been increasingly used inplaces beyond its roots as a filesystem for Android and embedded devices.Container images based on EROFS are being used in many places these days, for example.