599 struct cftype {  struct
605 	char name[MAX_CFTYPE_NAME];
606 	unsigned long private;
612 	size_t max_write_len;
615 	unsigned int flags;
640 	u64 (*read_u64)(struct cgroup_subsys_state *css, struct cftype *cft);  argument
644 	s64 (*read_s64)(struct cgroup_subsys_state *css, struct cftype *cft);  argument
659 	int (*write_u64)(struct cgroup_subsys_state *css, struct cftype *cft,  argument
664 	int (*write_s64)(struct cgroup_subsys_state *css, struct cftype *cft,  argument
673 	ssize_t (*write)(struct kernfs_open_file *of,
676 	__poll_t (*poll)(struct kernfs_open_file *of,
680 	struct lock_class_key	lockdep_key;