diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 6b681ee988b3f90085c88a94351bb3aaa5248650..7eb72defec9e454fdcd0220dca18d9f186380261 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -1860,10 +1860,13 @@ void mem_cgroup_track_foreign_dirty_slowpath(struct page *page, static inline void mem_cgroup_track_foreign_dirty(struct page *page, struct bdi_writeback *wb) { + struct mem_cgroup *memcg; + if (mem_cgroup_disabled()) return; - if (unlikely(&page_memcg(page)->css != wb->memcg_css)) + memcg = page_memcg(page); + if (unlikely(memcg && &memcg->css != wb->memcg_css)) mem_cgroup_track_foreign_dirty_slowpath(page, wb); }