drm/shmem-helpers: Simplify dma-buf importing
- Ditch the ->pages array - Make it a private gem bo, which means no shmem object, which means fireworks if anyone calls drm_gem_object_get_pages. But we've just made sure that's all covered. v2: Rebase v3: I forgot to remove the page_count mangling from the free path too. Noticed by Boris while testing. Cc: Boris Brezillon <boris.brezillon@collabora.com> Tested-by:Boris Brezillon <boris.brezillon@collabora.com> Acked-by:
Thomas Zimmermann <tzimmermann@suse.de> Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: Rob Herring <robh@kernel.org> Cc: Noralf Trønnes <noralf@tronnes.org> Signed-off-by:
Daniel Vetter <daniel.vetter@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200529140542.2103713-1-daniel.vetter@ffwll.ch
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