[PATCH v3 0/6] Add support for atomic async page-flips

[Simon Ser]

Hm, thinking about this again, there's still something which is a bit
off with the new approach. Let's say the caller sets MODE_ID to another
blob ID, but with the same blob payload. DRM core is smart enough to
figure out that the mode didn't change and skip the modeset. However,
the check implemented here isn't smart enough.

tl;dr there are still discrepancies between the regular code-path and
the async page-flip one. Does that matter?