Re: [RFC 0/7] Support high-order page bulk allocation

[Matthew Wilcox <willy@xxxxxxxxxxxxx>]

On Tue, Aug 18, 2020 at 08:15:43AM -0700, Minchan Kim wrote:
> I understand pfn stuff in the API is not pretty but the concept of idea
> makes sense to me in that go though the *migratable area* and get possible
> order pages with hard effort. It looks like GFP_NORETRY version for
> kmem_cache_alloc_bulk.
> 
> How about this?
> 
>     int cma_alloc(struct cma *cma, int order, unsigned int nr_elem, struct page **pages);

I think that makes a lot more sense as an API.  Although I think you want

int cma_bulk_alloc(struct cma *cma, unsigned order, unsigned nr_elem,
		struct page **pages);