[Intel-gfx] [PATCH 1/2] drm/i915: Check activity on i915_vma after confirming pin_count==0

[Chris Wilson]

Quoting Tvrtko Ursulin (2020-01-24 10:33:14)
> 
> On 24/01/2020 09:30, Chris Wilson wrote:
> Okay, it's not dangerous or anything so worth a try even without 
> bothering (on my side) to think of all possible paths.

We/I will need to look at why that i915_vma_sync() before the pin_count
is required as it seems to be possible to upset the shrinker when it
tries to unbind itself.

I hope CI is good enough to say yes/no.
-Chris