Re: [PATCH v1 00/12] MEMORY_DEVICE_COHERENT for CPU-accessible coherent device memory

Matthew Wilcox
2021-10-12T19:12:56Z

On Tue, Oct 12, 2021 at 11:39:57AM -0700, Andrew Morton wrote:
> Because I must ask: if this feature is for one single computer which
> presumably has a custom kernel, why add it to mainline Linux?

I think in particular patch 2 deserves to be merged because it removes
a ton of cruft from every call to put_page() (at least if you're using
a distro config). It makes me nervous, but I think it's the right
thing to do. It may well need more fixups after it has been merged,
but that's life.