[Intel-gfx] [RFC PATCH 30/42] drm/i915: Introduce DRM_I915_GEM_MMAP_OFFSET

[Chris Wilson]

Quoting Matthew Auld (2019-02-14 14:57:28)
> @@ -157,6 +163,10 @@ struct drm_i915_gem_object {
>         unsigned int userfault_count;
>         struct list_head userfault_link;
>  
> +       enum i915_cpu_mmap_origin_type mmap_origin;
> +       atomic_t mmap_count;
> +       u64 mmap_flags;

These flags must be per-mmap instance, userspace does try to keep
several different types of mmaps active.
-Chris