Re: [PATCH] mm: export cma alloc and release

[Christoph Hellwig]

On Mon, Oct 07, 2019 at 09:50:31AM -0700, Mark Salyzyn wrote:
> On 10/5/19 1:37 AM, Christoph Hellwig wrote:
>> On Thu, Oct 03, 2019 at 09:55:28AM +0100, Catalin Marinas wrote:
>>> Aren't drivers supposed to use the DMA API for such allocations rather
>>> than invoking cma_*() directly?
>> Yes, they are.
>
> We have an engineer assigned to rewriting the ion memory driver to use 
> dma_buf interfaces. Hopefully that effort will solve the problem of 
> requiring these interfaces to be exported so that that driver (and others) 
> can be modularized.
>
> Thanks for the reviews, drop this patch from the list and we will regroup, 
> and accept that standing code in the kernel can not be modularized for the 
> moment.

How is that different from the "DMA-BUF Heaps (destaging ION)" series
floating around?