jakesmith/HPCC-Platform — comment on commit c01c927819ae8c4c3ffb95c335f2004cf96e0791
File: dali/base/dadfs.cpp line 5377
By jakesmith:

NB: these 'locks' are transitory, they won't persist if there's failure,
they track how nested they are and when last lock nest released they cause commit()