typedef enum _KSPIN_LOCK_QUEUE_NUMBER
{
         LockQueueDispatcherLock = 0,
         LockQueueExpansionLock = 1,
         LockQueuePfnLock = 2,
         LockQueueSystemSpaceLock = 3,
         LockQueueVacbLock = 4,
         LockQueueMasterLock = 5,
         LockQueueNonPagedPoolLock = 6,
         LockQueueIoCancelLock = 7,
         LockQueueWorkQueueLock = 8,
         LockQueueIoVpbLock = 9,
         LockQueueIoDatabaseLock = 10,
         LockQueueIoCompletionLock = 11,
         LockQueueNtfsStructLock = 12,
         LockQueueAfdWorkQueueLock = 13,
         LockQueueBcbLock = 14,
         LockQueueMmNonPagedPoolLock = 15,
         LockQueueUnusedSpare16 = 16,
         LockQueueTimerTableLock = 17,
         LockQueueMaximumLock = 33
} KSPIN_LOCK_QUEUE_NUMBER;

Windows Vista Kernel Structures