samba - Dec 1998 - oplocks and mixed unix/smb file access

Hi,

We've recently upgraded to samba-1.9.18p10 and I'm a bit worried about 
using oplocks on shares that contain CVS repositories. Files are 
edited on NT and updates checked into cvs using the NT CVS client
talking to a Unix CVS server.

Is it safe to use oplocks in this case?

If not - should I separate the CVS subtree into a completely separate
share (or sub-share?) or is it possible to veto oplocks for all files
in a (cvs) subtree of a share?

Thanks,
-- Aideen McConville