static int __must_check initialize_page_cache(struct page_cache *cache,
					      const struct geometry *geometry,
					      u32 chapters_in_cache,
					      unsigned int zone_count)
static int __must_check initialize_page_cache(struct page_cache *cache,
					      const struct index_geometry *geometry,
					      u32 chapters_in_cache,
					      unsigned int zone_count)