+ unsigned long alloced; /* data pages alloced to file */
+ unsigned long swapped; /* subtotal assigned to swap */
+ unsigned long next_index; /* highest alloced index + 1 */
+ struct shared_policy policy; /* NUMA memory alloc policy */
+ struct page *i_indirect; /* top indirect blocks page */
+ swp_entry_t i_direct[SHMEM_NR_DIRECT]; /* first blocks */
+ struct list_head swaplist; /* chain of maybes on swap */