On Mon, 18 Jun 2018 13:27:24 +0800 Waiman Long <long...@redhat.com> wrote:
> >>
> >> Maybe another possible solution would be to add another proc entry to
> >> handle this correctly, and make the old one only for compatibility.
> > Yes, I guess so. Just leave the old tunable alone. Possibly we
> > could add a printk_once("please switch to the new interface").
>
> A problem with that is the fact that those sysctl parameters have been
> there for so long that it may be hard to persuade users to use the new
> sysctl parameters.
That's what a once-off warning could help with. Tell them they're
using a deprecated interface. It would take a few years, but when
people see the old interface is scheduled for removal, they'll switch,
over time.
