Re: [PATCH] staging: android: ion: Allocate from heap ID directly without mask

From: Brian Starkey
Date: Thu Jan 24 2019 - 11:52:53 EST

On Thu, Jan 24, 2019 at 10:12:10AM -0600, Andrew F. Davis wrote:
> On 1/24/19 9:24 AM, Brian Starkey wrote:


> >
> > What do you think about renaming ion_allocation_data.unused to heap_id
> > and adding a flag instead? It's adding cruft to a staging API, but it
> > might soften the transition. The "old way" could get completely
> > removed just before destaging. Just a thought.
> >
> Sounds confusing, backwards compatibility in staging just doesn't seem
> like the right thing to do.

Well, fair enough. It's going to cause a bit of pain - libion could
probably isolate most Android users. Laura patched that in AOSP last
time around, but I don't know how that went (or how strongly Google
feel about kernel ABI changes).