diff options
Diffstat (limited to 'mm/vmscan.c')
| -rw-r--r-- | mm/vmscan.c | 60 |
1 files changed, 31 insertions, 29 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index c4ef8681637b..4911754c93b7 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -171,11 +171,22 @@ int vm_swappiness = 60; */ unsigned long vm_total_pages; +static void set_task_reclaim_state(struct task_struct *task, + struct reclaim_state *rs) +{ + /* Check for an overwrite */ + WARN_ON_ONCE(rs && task->reclaim_state); + + /* Check for the nulling of an already-nulled member */ + WARN_ON_ONCE(!rs && !task->reclaim_state); + + task->reclaim_state = rs; +} + static LIST_HEAD(shrinker_list); static DECLARE_RWSEM(shrinker_rwsem); -#ifdef CONFIG_MEMCG_KMEM - +#ifdef CONFIG_MEMCG /* * We allow subsystems to populate their shrinker-related * LRU lists before register_shrinker_prepared() is called @@ -227,30 +238,7 @@ static void unregister_memcg_shrinker(struct shrinker *shrinker) idr_remove(&shrinker_idr, id); up_write(&shrinker_rwsem); } -#else /* CONFIG_MEMCG_KMEM */ -static int prealloc_memcg_shrinker(struct shrinker *shrinker) -{ - return 0; -} -static void unregister_memcg_shrinker(struct shrinker *shrinker) -{ -} -#endif /* CONFIG_MEMCG_KMEM */ - -static void set_task_reclaim_state(struct task_struct *task, - struct reclaim_state *rs) -{ - /* Check for an overwrite */ - WARN_ON_ONCE(rs && task->reclaim_state); - - /* Check for the nulling of an already-nulled member */ - WARN_ON_ONCE(!rs && !task->reclaim_state); - - task->reclaim_state = rs; -} - -#ifdef CONFIG_MEMCG static bool global_reclaim(struct scan_control *sc) { return !sc->target_mem_cgroup; @@ -305,6 +293,15 @@ static bool memcg_congested(pg_data_t *pgdat, } #else +static int prealloc_memcg_shrinker(struct shrinker *shrinker) +{ + return 0; +} + +static void unregister_memcg_shrinker(struct shrinker *shrinker) +{ +} + static bool global_reclaim(struct scan_control *sc) { return true; @@ -591,7 +588,7 @@ static unsigned long do_shrink_slab(struct shrink_control *shrinkctl, return freed; } -#ifdef CONFIG_MEMCG_KMEM +#ifdef CONFIG_MEMCG static unsigned long shrink_slab_memcg(gfp_t gfp_mask, int nid, struct mem_cgroup *memcg, int priority) { @@ -599,7 +596,7 @@ static unsigned long shrink_slab_memcg(gfp_t gfp_mask, int nid, unsigned long ret, freed = 0; int i; - if (!memcg_kmem_enabled() || !mem_cgroup_online(memcg)) + if (!mem_cgroup_online(memcg)) return 0; if (!down_read_trylock(&shrinker_rwsem)) @@ -625,6 +622,11 @@ static unsigned long shrink_slab_memcg(gfp_t gfp_mask, int nid, continue; } + /* Call non-slab shrinkers even though kmem is disabled */ + if (!memcg_kmem_enabled() && + !(shrinker->flags & SHRINKER_NONSLAB)) + continue; + ret = do_shrink_slab(&sc, shrinker, priority); if (ret == SHRINK_EMPTY) { clear_bit(i, map->map); @@ -661,13 +663,13 @@ unlock: up_read(&shrinker_rwsem); return freed; } -#else /* CONFIG_MEMCG_KMEM */ +#else /* CONFIG_MEMCG */ static unsigned long shrink_slab_memcg(gfp_t gfp_mask, int nid, struct mem_cgroup *memcg, int priority) { return 0; } -#endif /* CONFIG_MEMCG_KMEM */ +#endif /* CONFIG_MEMCG */ /** * shrink_slab - shrink slab caches |