On Thu, Mar 05, 2020 at 04:43:54PM +0000, Vincenzo Frascino wrote: > mem_cgroup_id_get_many() is currently used only when MMU or MEMCG_SWAP > configuration options are enabled. Having them disabled triggers the > following warning at compile time: > > linux/mm/memcontrol.c:4797:13: warning: ‘mem_cgroup_id_get_many’ defined > but not used [-Wunused-function] > static void mem_cgroup_id_get_many(struct mem_cgroup *memcg, unsigned > int n) > > Make mem_cgroup_id_get_many() __maybe_unused to address the issue. > > Cc: Johannes Weiner <hannes@xxxxxxxxxxx> > Cc: Michal Hocko <mhocko@xxxxxxxxxx> > Cc: Vladimir Davydov <vdavydov.dev@xxxxxxxxx> > Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> > Signed-off-by: Vincenzo Frascino <vincenzo.frascino@xxxxxxx> Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx> Thanks Vincenzo.