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由 Michael Dalton 提交于
To ensure ewma_read() without a lock returns a valid but possibly out of date average, modify ewma_add() by using ACCESS_ONCE to prevent intermediate wrong values from being written to avg->internal. Suggested-by: NEric Dumazet <eric.dumazet@gmail.com> Acked-by: NMichael S. Tsirkin <mst@redhat.com> Acked-by: NEric Dumazet <edumazet@google.com> Signed-off-by: NMichael Dalton <mwdalton@google.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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