BIGXMASK
_SPINLOCK(&bigspin_array[hv & BIGXMASK]);
_SPINLOCK(&bigspin_array[hv & BIGXMASK]);
_SPINUNLOCK(&bigspin_array[hv & BIGXMASK]);
_SPINLOCK(&bigspin_array[i & BIGXMASK]);
_SPINUNLOCK(&bigspin_array[i & BIGXMASK]));
_SPINUNLOCK(&bigspin_array[i & BIGXMASK]));
_SPINUNLOCK(&bigspin_array[i & BIGXMASK]);