On Tue, Jan 21, 2020 at 04:48:40PM +0100, Christian Brauner <christian.brauner@xxxxxxxxxx> wrote: > Add a helper cgroup_get_from_file(). The helper will be used in > subsequent patches to retrieve a cgroup while holding a reference to the > struct file it was taken from. Acked-by: Michal Koutný <mkoutny@xxxxxxxx>