[ You had a really odd Reply-to on this one ]
On Mon, May 3, 2021 at 12:15 PM Daniel Vetter daniel.vetter@ffwll.ch wrote:
Anyway here's a small pull for you to ponder, now that the big ones are all through.
Well, _now_ I'm all caught up. Knock wood. Anyway, time to look at it:
Follow-up to my pull from last merge window: kvm and vfio lost their very unsafe use of follow_pfn, this appropriately marks up the very last user for some userptr-as-buffer use-cases in media. There was some resistance to outright removing it, maybe we can do this in a few releases.
Hmm. So this looks mostly ok to me, although I think the change to the nommu case is pretty ridiculous.
On nommu, unsafe_follow_pfn() should just be a wrapper around follow_pfn(). There's no races when you can't remap anything. No?
Do the two media cases even work on nommu?
Finally - did you intend fo this to be a real pull request? Because the email read to me like "think about this and tell me what you think" rather than "please pull"..
And I have now fulfilled that "think about and tell me" part ;)
Linus