Re: [PATCH v4 0/2] staging: android: Remove BUG/BUG_ON from ion

[Greg Kroah-Hartman]

On Thu, Aug 27, 2020 at 08:16:54AM +0100, Christoph Hellwig wrote:
> On Tue, Aug 25, 2020 at 08:52:29AM +0200, Greg Kroah-Hartman wrote:
> > On Tue, Aug 25, 2020 at 07:47:29AM +0100, Christoph Hellwig wrote:
> > > On Fri, Aug 21, 2020 at 06:27:04PM +0300, Tomer Samara wrote:
> > > > Remove BUG/BUG_ON from androind/ion
> > > 
> > > Please just remove ion.  It has been rejected and we have developed
> > > proper kernel subsystens to replace it.  Don't waste your time on it.
> > 
> > It is going to be removed at the end of this year.  Why we keep it
> > around until then, I really don't know, but John and Laura have this as
> > the plan.
> 
> It keeps getting in the way of various projects and has no path
> going upstream properly.  Seems weird to keep this dead and not all
> that great code around.

In looking at the mess of ion changes that are currently in the AOSP
kernel tree (where android devices are pulled from), it looks almost
nothing like what we currently have here in the mainline kernel tree.

So if what we have here, today, is not of use to anyone who actually
wants to use this interface, why are we keeping it around?

John, why can't we just drop all of this code from the kernel today, and
then Android will keep their own copy for their next LTS release anyway.
It doesn't look like what we have here, and the merge issues it causes
is a pain (as I know from having to do them...)  So keeping this around
in-tree any longer feels pointless to me, and actively causes me, and
others, more work for no gain.

I'll go make a patch set to just drop this code now...

thanks,

greg k-h