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Declare that, under extreme circumstances, the shrinker may need to wait upon a request, in which case reset must not itself deadlock in order to ensure forward progress of the driver. That is since the shrinker may depend upon a reset, any reset cannot touch the shrinker. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20201229141626.4773-1-chris@chris-wilson.co.uk