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Chris Wilson authored
Use the per-object mm.lock to allocate the backing storage (and hold a reference to it across the dmabuf access) without resorting to struct_mutex. Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by:
Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20161028125858.23563-15-chris@chris-wilson.co.uk
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