On Tue Mar 3, 2020 at 8:50 AM, Shakeel Butt wrote: > Hi Daniel, > > > On Mon, Mar 2, 2020 at 5:42 PM Daniel Xu <dxu@xxxxxxxxx> wrote: > > > > User extended attributes are useful as metadata storage for kernfs > > consumers like cgroups. Especially in the case of cgroups, it is useful > > to have a central metadata store that multiple processes/services can > > use to coordinate actions. > > > > A concrete example is for userspace out of memory killers. We want to > > let delegated cgroup subtree owners (running as non-root) to be able to > > say "please avoid killing this cgroup". In server environments this is > > less important as everyone is running as root. > > > I would recommend removing the "everyone is running as root" statement > as it is not generally true. > > > Shakeel Good point, thanks.
