[Intel-gfx] [PATCH 2/2] drm/i915: Wire up shrinkctl->nr_scanned

[Chris Wilson]

Quoting Andrew Morton (2017-08-22 23:45:50)
> On Tue, 22 Aug 2017 14:53:25 +0100 Chris Wilson <chris at chris-wilson.co.uk> wrote:
> 
> > shrink_slab() allows us to report back the number of objects we
> > successfully scanned (out of the target shrinkctl->nr_to_scan). As
> > report the number of pages owned by each GEM object as a separate item
> > to the shrinker, we cannot precisely control the number of shrinker
> > objects we scan on each pass; and indeed may free more than requested.
> > If we fail to tell the shrinker about the number of objects we process,
> > it will continue to hold a grudge against us as any objects left
> > unscanned are added to the next reclaim -- and so we will keep on
> > "unfairly" shrinking our own slab in comparison to other slabs.
> 
> It's unclear which tree this is against but I think I got it all fixed
> up.  Please check the changes to i915_gem_shrink().

My apologies, I wrote it against drm-tip for running against our CI. The
changes look fine, thank you.
-Chris