OPLOCK_LEVEL_CACHE_MASK
LeaseState &= OPLOCK_LEVEL_CACHE_MASK;
OldLevel &= OPLOCK_LEVEL_CACHE_MASK;
NewLevel &= OPLOCK_LEVEL_CACHE_MASK;
OPLOCK_LEVEL_CACHE_MASK;
uint32_t level = *rop & OPLOCK_LEVEL_CACHE_MASK;
uint32_t level = *statep & OPLOCK_LEVEL_CACHE_MASK;