Re: [PATCH v8 7/7] x86, mm: Add set_memory_wt() for WT

[Ingo Molnar <mingo@kernel.org>]

* Toshi Kani <toshi.kani@hp.com> wrote:

> On Wed, 2015-02-25 at 08:22 +0100, Ingo Molnar wrote:
> > * Toshi Kani <toshi.kani@hp.com> wrote:
> > 
> > > +int set_pages_array_wt(struct page **pages, int addrinarray)
> > > +{
> > > +	return _set_pages_array(pages, addrinarray, _PAGE_CACHE_MODE_WT);
> > > +}
> > > +EXPORT_SYMBOL(set_pages_array_wt);
> > 
> > So by default we make new APIs EXPORT_SYMBOL_GPL(): we 
> > don't want proprietary modules mucking around with new code 
> > PAT interfaces, we only want modules we can analyze and fix 
> > in detail.
> 
> Right.  I have one question for this case.  This 
> set_pages_array_wt() extends the set_pages_array_xx() 
> family, which are all exported with EXPORT_SYMBOL() 
> today.  In this case, should we keep them exported in the 
> consistent manner, or should we still use GPL when adding 
> a new one?

Still keep it GPL, it's a new API that old modules 
obviously don't use.

Thanks,

	Ingo