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aio.c

Dmitry Osipenko authored
Add unlocked variants of drm_gem_un/pin() functions and make them public.
These new helpers will take care of GEM dma-reservation locking for DRM
drivers.
We are going to add memory shrinking support to the VirtIO-GPU driver
that will need to pin framebuffers explicitly to prevent eviction of the
actively used buffers by the shrinker. VirtIO-GPU driver will use these
new generic helpers to pin shmem framebuffers.
Signed-off-by:
Dmitry Osipenko <dmitry.osipenko@collabora.com>