diff options
| -rw-r--r-- | mm/memcontrol.c | 29 |
1 files changed, 2 insertions, 27 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 216659d4441a..706f7bc16db2 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -382,15 +382,10 @@ struct mem_cgroup { /* internal only representation about the status of kmem accounting. */ enum { - KMEM_ACCOUNTED_ACTIVE = 0, /* accounted by this cgroup itself */ - KMEM_ACCOUNTED_ACTIVATED, /* static key enabled. */ + KMEM_ACCOUNTED_ACTIVE, /* accounted by this cgroup itself */ KMEM_ACCOUNTED_DEAD, /* dead memcg with pending kmem charges */ }; -/* We account when limit is on, but only after call sites are patched */ -#define KMEM_ACCOUNTED_MASK \ - ((1 << KMEM_ACCOUNTED_ACTIVE) | (1 << KMEM_ACCOUNTED_ACTIVATED)) - #ifdef CONFIG_MEMCG_KMEM static inline void memcg_kmem_set_active(struct mem_cgroup *memcg) { @@ -402,16 +397,6 @@ static bool memcg_kmem_is_active(struct mem_cgroup *memcg) return test_bit(KMEM_ACCOUNTED_ACTIVE, &memcg->kmem_account_flags); } -static void memcg_kmem_set_activated(struct mem_cgroup *memcg) -{ - set_bit(KMEM_ACCOUNTED_ACTIVATED, &memcg->kmem_account_flags); -} - -static void memcg_kmem_clear_activated(struct mem_cgroup *memcg) -{ - clear_bit(KMEM_ACCOUNTED_ACTIVATED, &memcg->kmem_account_flags); -} - static void memcg_kmem_mark_dead(struct mem_cgroup *memcg) { /* @@ -2995,8 +2980,7 @@ static DEFINE_MUTEX(set_limit_mutex); static inline bool memcg_can_account_kmem(struct mem_cgroup *memcg) { return !mem_cgroup_disabled() && !mem_cgroup_is_root(memcg) && - (memcg->kmem_account_flags & KMEM_ACCOUNTED_MASK) == - KMEM_ACCOUNTED_MASK; + memcg_kmem_is_active(memcg); } /* @@ -3120,19 +3104,10 @@ static int memcg_update_cache_sizes(struct mem_cgroup *memcg) 0, MEMCG_CACHES_MAX_SIZE, GFP_KERNEL); if (num < 0) return num; - /* - * After this point, kmem_accounted (that we test atomically in - * the beginning of this conditional), is no longer 0. This - * guarantees only one process will set the following boolean - * to true. We don't need test_and_set because we're protected - * by the set_limit_mutex anyway. - */ - memcg_kmem_set_activated(memcg); ret = memcg_update_all_caches(num+1); if (ret) { ida_simple_remove(&kmem_limited_groups, num); - memcg_kmem_clear_activated(memcg); return ret; } |