[Intel-gfx] [PATCH v6 6/6] drm/i915: Use struct vma_resource instead of struct vma_snapshot

[Matthew Auld]

On Fri, 7 Jan 2022 at 14:24, Thomas Hellström
<thomas.hellstrom at linux.intel.com> wrote:
>
> There is always a struct vma_resource guaranteed to be alive when we
> access a corresponding struct vma_snapshot.
>
> So ditch the latter and instead of allocating vma_snapshots, reference
> the already existning vma_resource.
>
> This requires a couple of extra members in struct vma_resource but that's
> a small price to pay for the simplification.
>
> v2:
> - Fix a missing include and declaration (kernel test robot <lkp at intel.com>)
>
> Signed-off-by: Thomas Hellström <thomas.hellstrom at linux.intel.com>
Reviewed-by: Matthew Auld <matthew.auld at intel.com>