You can see what process is active on a file or folder by using lsof (sudo apt-get install lsof if you don't have it). Then run
lsof /path/to/folder to see what's using it. Check man lsof for more information. Also, before blacklisting, check whether the modules are present in /etc/mouled (it's a text file). If it's the case, remove them and they won't be loaded at boot.
