typedef struct _KNODE
{
     SLIST_HEADER PagedPoolSListHead;
     SLIST_HEADER NonPagedPoolSListHead[3];
     SLIST_HEADER PfnDereferenceSListHead;
     ULONG ProcessorMask;
     UCHAR Color;
     UCHAR Seed;
     UCHAR NodeNumber;
     _flags Flags;
     ULONG MmShiftedColor;
     ULONG FreeCount[2];
     PSINGLE_LIST_ENTRY PfnDeferredList;
     CACHED_KSTACK_LIST CachedKernelStacks;
} KNODE, *PKNODE;

Windows Vista Kernel Structures