Hello, Lennart, Li. Two things. * Probably I'm missing something but isn't the systemd cgroup hierarchy already managed by systemd? If so, I don't see how managing tmpfs on the side would noticeably make things more fragile. It would take a bit more care after, for example, restart but it shouldn't be too complex, no? * FS attributes already being used for userland information seems like a good argument, but we shouldn't add separate specialized xattr implementation to different pseudo filesystems. For it to be acceptable, it should be a libfs thing easily applicable to any pseudo FS and definitely shouldn't be using kmem for storage. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe cgroups" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html