Re: [PATCH 16/16] dma-mapping: use exact allocation in dma_alloc_contiguous

'Christoph Hellwig'
2019-06-14T15:09:16Z

On Fri, Jun 14, 2019 at 04:05:33PM +0100, Robin Murphy wrote:
> That said, I don't believe this particular patch should make any
> appreciable difference - alloc_pages_exact() is still going to give back
> the same base address as the rounded up over-allocation would, and
> PAGE_ALIGN()ing the size passed to get_order() already seemed to be
> pointless.

True, we actually do get the right alignment just about anywhere.
Not 100% sure about the various static pool implementations, but we
can make sure if any didn't we'll do that right thing once those
get consolidated.