NTSTATUS __fastcall FsRtlNumberOfRunsInLargeMcb(INT64 a1){ NTSTATUS v2; ExAcquireFastMutex(*(PFAST_MUTEX *)a1); v2 = *(_DWORD *)(a1 + 12); KeReleaseGuardedMutex(*(PKGUARDED_MUTEX *)a1); return v2; }