diff options
Diffstat (limited to 'mm/memcontrol.c')
| -rw-r--r-- | mm/memcontrol.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index ca194864d802..5beea03dd58a 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -2254,7 +2254,8 @@ static void reclaim_high(struct mem_cgroup *memcg, continue; memcg_memory_event(memcg, MEMCG_HIGH); try_to_free_mem_cgroup_pages(memcg, nr_pages, gfp_mask, true); - } while ((memcg = parent_mem_cgroup(memcg))); + } while ((memcg = parent_mem_cgroup(memcg)) && + !mem_cgroup_is_root(memcg)); } static void high_work_func(struct work_struct *work) @@ -2335,6 +2336,9 @@ static unsigned long calculate_high_delay(struct mem_cgroup *memcg, usage = page_counter_read(&memcg->memory); high = READ_ONCE(memcg->high); + if (usage <= high) + continue; + /* * Prevent division by 0 in overage calculation by acting as if * it was a threshold of 1 page @@ -5812,7 +5816,7 @@ retry: switch (get_mctgt_type(vma, addr, ptent, &target)) { case MC_TARGET_DEVICE: device = true; - /* fall through */ + fallthrough; case MC_TARGET_PAGE: page = target.page; /* |