On Mon 07-05-18 13:16:51, Shakeel Butt wrote: > From: Junaid Shahid <juna...@google.com> > > The per-cpu memcg stock can retain a charge of upto 32 pages. On a > machine with large number of cpus, this can amount to a decent amount > of memory. Additionally force_empty interface might be triggering > unneeded memcg reclaims. > > Signed-off-by: Junaid Shahid <juan...@google.com> > Signed-off-by: Shakeel Butt <shake...@google.com>
Acked-by: Michal Hocko <mho...@suse.com> > --- > mm/memcontrol.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/mm/memcontrol.c b/mm/memcontrol.c > index e2d33a37f971..2c3c69524b49 100644 > --- a/mm/memcontrol.c > +++ b/mm/memcontrol.c > @@ -2841,6 +2841,9 @@ static int mem_cgroup_force_empty(struct mem_cgroup > *memcg) > > /* we call try-to-free pages for make this cgroup empty */ > lru_add_drain_all(); > + > + drain_all_stock(memcg); > + > /* try to free all pages in this cgroup */ > while (nr_retries && page_counter_read(&memcg->memory)) { > int progress; > -- > 2.17.0.441.gb46fe60e1d-goog -- Michal Hocko SUSE Labs