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The 'used' and 'new' bitmaps are local to this function, so there is no need to use atomic access because concurrency can not happen. Use the non-atomic __set_bit() to save a few cycles. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>