diff options
| -rw-r--r-- | mm/memcontrol.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index dc28afa149ef..1cd944c2a734 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -1525,7 +1525,7 @@ void mem_cgroup_print_oom_meminfo(struct mem_cgroup *memcg) if (cgroup_subsys_on_dfl(memory_cgrp_subsys)) pr_info("swap: usage %llukB, limit %llukB, failcnt %lu\n", K((u64)page_counter_read(&memcg->swap)), - K((u64)memcg->swap.max), memcg->swap.failcnt); + K((u64)READ_ONCE(memcg->swap.max)), memcg->swap.failcnt); else { pr_info("memory+swap: usage %llukB, limit %llukB, failcnt %lu\n", K((u64)page_counter_read(&memcg->memsw)), @@ -1558,7 +1558,7 @@ unsigned long mem_cgroup_get_max(struct mem_cgroup *memcg) unsigned long swap_max; memsw_max = memcg->memsw.max; - swap_max = memcg->swap.max; + swap_max = READ_ONCE(memcg->swap.max); swap_max = min(swap_max, (unsigned long)total_swap_pages); max = min(max + swap_max, memsw_max); } @@ -7117,7 +7117,8 @@ bool mem_cgroup_swap_full(struct page *page) return false; for (; memcg != root_mem_cgroup; memcg = parent_mem_cgroup(memcg)) - if (page_counter_read(&memcg->swap) * 2 >= memcg->swap.max) + if (page_counter_read(&memcg->swap) * 2 >= + READ_ONCE(memcg->swap.max)) return true; return false; |