Re: [PATCH v4 2/2] staging: ion: create one device entry per heap

On Tue, Sep 26, 2017 at 02:07:05PM +0200, Benjamin Gaignard wrote:

version 4:
- add a configuration flag to switch between legacy Ion misc device
  and one device per heap version.

Should this be a switch or should it just be enabling and disabling the
legacy device with the per heap ones always availalbe?  I can't see that
the new devices would do any harm or have trouble interacting with the 
per heap ones.  Being able to have both enabled would make things easier
for userspaces that are moving to the device per heap interface.