ULONG FsRtlQueryMaximumVirtualDiskNestingLevel(void){
ULONG result;
result = FsRtlVirtualDiskMaxTreeDepth;
if( FsRtlVirtualDiskMaxTreeDepth == -1 )
{
result = FsRtlpGetMaxVirtualDiskNestingLevel();
FsRtlVirtualDiskMaxTreeDepth = result;
}
return result;
}