layer_node
#define VTOLAYER(vp) ((struct layer_node *)(vp)->v_data)
struct layer_node *a = VTOLAYER(vp);
struct layer_node *xp;
struct layer_node *xp = VTOLAYER(vp);
struct layer_node ln;
struct layer_node ln;
struct layer_node ln;
struct layer_node layer_node;
if (!KVM_READ(VTOLAYER(vp), &layer_node, sizeof(layer_node))) {
vp = layer_node.layer_lowervp;
struct layer_node lnode, *lp = &lnode;