On Tue, Apr 12, 2022 at 1:10 AM Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote: > > On Mon, Apr 11, 2022 at 07:16:21PM -0700, Andrew Morton wrote: > > On Wed, 6 Apr 2022 21:15:20 -0600 Yu Zhao <yuzhao@xxxxxxxxxx> wrote: > > > > +#ifdef CONFIG_LRU_GEN > > > +static void mem_cgroup_attach(struct cgroup_taskset *tset) > > > +{ > > > + struct cgroup_subsys_state *css; > > > + struct task_struct *task = NULL; > > > + > > > + cgroup_taskset_for_each_leader(task, css, tset) > > > + break; > > > > Does this actually do anything? > > Yeah, it finds the first leader if there is any, but this is indeed > quite terrible coding style. I've added a one liner comment "find the first leader if there is any", for now. I'm open to other suggestions.