+/* Determine object index from a given position */
+static inline unsigned int __obj_to_index(const struct kmem_cache *cache,
+ void *addr, void *obj)
+{
+ return reciprocal_divide(kasan_reset_tag(obj) - addr,
+ cache->reciprocal_size);
+}
+
+static inline unsigned int obj_to_index(const struct kmem_cache *cache,
+ const struct page *page, void *obj)
+{
+ return __obj_to_index(cache, page_address(page), obj);
+}
+
+static inline int objs_per_slab_page(const struct kmem_cache *cache,
+ const struct page *page)
+{
+ return page->objects;
+}