On Mon, Jun 20, 2016 at 01:55:23PM +0900, Byungchul Park wrote:> @@ -215,6 +219,11 @@ struct page {> #ifdef LAST_CPUPID_NOT_IN_PAGE_FLAGS> int _last_cpupid;> #endif> +> +#ifdef CONFIG_LOCKDEP_PAGELOCK> + struct lockdep_map map;> + struct cross_lock xlock;> +#endif> }So that's 32+64=96 bytes (CONFIG_LOCK_STAT=n) added to struct page,really!?