Re: dma_mmap_fault discussion

From: Christoph Hellwig
Date: Fri Sep 06 2019 - 03:20:40 EST


On Fri, Sep 06, 2019 at 09:10:08AM +0200, Thomas Hellström (VMware) wrote:
> It's definitely possible. I was just wondering whether it was necessary, but
> it seems like it.

Yepp.

I've pushed a new version out (even hotter off the press) that doesn't
require the region for dma_mmap_prepare, and also uses PAGE_SIZE units
for the offset / length in dma_mmap_fault, which simplifies a few
things.