On Wed, 2019-10-30 at 14:49 -0700, Christoph Hellwig wrote:

On Mon, Oct 14, 2019 at 08:31:03PM +0200, Nicolas Saenz Julienne wrote:

quoted

Some architectures, notably ARM, are interested in tweaking this
depending on their runtime DMA addressing limitations.

Signed-off-by: Nicolas Saenz Julienne <redacted>

Do you want me to pick this up for the 5.5 dma-mapping tree, or do you
want me to wait for the rest to settle?

I'd say take it, this will be ultimately needed once we push forward with ARM.