diff options
| -rw-r--r-- | mm/kasan/kasan.c | 3 | ||||
| -rw-r--r-- | mm/slab.c | 12 | ||||
| -rw-r--r-- | mm/slab.h | 1 | ||||
| -rw-r--r-- | mm/slub.c | 11 |
4 files changed, 26 insertions, 1 deletions
diff --git a/mm/kasan/kasan.c b/mm/kasan/kasan.c index f7a5e1d1ba87..bc0e68f7dc75 100644 --- a/mm/kasan/kasan.c +++ b/mm/kasan/kasan.c @@ -382,7 +382,8 @@ void kasan_cache_shrink(struct kmem_cache *cache) void kasan_cache_shutdown(struct kmem_cache *cache) { - quarantine_remove_cache(cache); + if (!__kmem_cache_empty(cache)) + quarantine_remove_cache(cache); } size_t kasan_metadata_size(struct kmem_cache *cache) diff --git a/mm/slab.c b/mm/slab.c index fb106e8277b7..e3a9b8e23306 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -2291,6 +2291,18 @@ out: return nr_freed; } +bool __kmem_cache_empty(struct kmem_cache *s) +{ + int node; + struct kmem_cache_node *n; + + for_each_kmem_cache_node(s, node, n) + if (!list_empty(&n->slabs_full) || + !list_empty(&n->slabs_partial)) + return false; + return true; +} + int __kmem_cache_shrink(struct kmem_cache *cachep) { int ret = 0; diff --git a/mm/slab.h b/mm/slab.h index e8981e811c45..68bdf498da3b 100644 --- a/mm/slab.h +++ b/mm/slab.h @@ -166,6 +166,7 @@ static inline slab_flags_t kmem_cache_flags(unsigned int object_size, SLAB_TEMPORARY | \ SLAB_ACCOUNT) +bool __kmem_cache_empty(struct kmem_cache *); int __kmem_cache_shutdown(struct kmem_cache *); void __kmem_cache_release(struct kmem_cache *); int __kmem_cache_shrink(struct kmem_cache *); diff --git a/mm/slub.c b/mm/slub.c index f48d942a487e..4fb037c98782 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -3696,6 +3696,17 @@ static void free_partial(struct kmem_cache *s, struct kmem_cache_node *n) discard_slab(s, page); } +bool __kmem_cache_empty(struct kmem_cache *s) +{ + int node; + struct kmem_cache_node *n; + + for_each_kmem_cache_node(s, node, n) + if (n->nr_partial || slabs_node(s, node)) + return false; + return true; +} + /* * Release all resources used by a slab cache. */ |