struct

Hi all,

I have a struct:

struct input_handle {

void *private;

int open;
char *name;

struct input_dev *dev;
struct input_handler *handler;

struct list_head d_node;
struct list_head h_node;
};

The problem is that I am wondering what d_node and h_node represent. I think that they represent a struct of list_head. But am I right? I can't figure out what list_head is because I don't think that is declared anywhere. The only declaration I can find about list_head is:

static inline void init_input_dev(struct input_dev *dev)
{
INIT_LIST_HEAD(&dev->h_list);
INIT_LIST_HEAD(&dev->node);
}

Can somebody help me and tell me what d_node and h_node represent in the struct handle?

Thanks in advance,