[Intel-gfx] [PATCH v3 05/37] drm/i915/region: support volatile objects

[Chris Wilson]

Quoting Matthew Auld (2019-08-09 23:26:11)
> Volatile objects are marked as DONTNEED while pinned, therefore once
> unpinned the backing store can be discarded.

Do we also have the concept of non-volatile backing store, e.g. shmemfs
(non-volatile) vs stolen (volatile)?
-Chris