On Wed, Nov 10, 2021 at 3:01 PM Mina Almasry <almasrymina@xxxxxxxxxx> wrote: > [...] > > +struct hugetlb_cgroup_per_node { > + /* hugetlb usage in pages over all hstates. */ > + unsigned long usage[HUGE_MAX_HSTATE]; > +}; > + You missed my other question. Why do you think concurrent access to this struct is safe?