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-rw-r--r--mm/slub.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/mm/slub.c b/mm/slub.c
index 8a4591526f37..62d0b557a596 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -3957,6 +3957,12 @@ int __kmem_cache_shrink(struct kmem_cache *s)
}
#ifdef CONFIG_MEMCG
+static void kmemcg_cache_deact_after_rcu(struct kmem_cache *s)
+{
+ /* called with all the locks held after a sched RCU grace period */
+ __kmem_cache_shrink(s);
+}
+
void __kmemcg_cache_deactivate(struct kmem_cache *s)
{
/*
@@ -3968,11 +3974,9 @@ void __kmemcg_cache_deactivate(struct kmem_cache *s)
/*
* s->cpu_partial is checked locklessly (see put_cpu_partial), so
- * we have to make sure the change is visible.
+ * we have to make sure the change is visible before shrinking.
*/
- synchronize_sched();
-
- __kmem_cache_shrink(s);
+ slab_deactivate_memcg_cache_rcu_sched(s, kmemcg_cache_deact_after_rcu);
}
#endif