Log based file-system
New ioctls being wired up for NILFS2 include FS_IOC_SETFSLABEL, FS_IOC_GETFSLABEL, FS_IOC_GETFSSYSFSPATH, and FS_IOC_GETUUID. [1]
: NILFS2 File-System Seeing More Fixes, Additional Ioctls Wired Up Ahead Of Linux 6.12 - Phoronix