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由 Alexey Dobriyan 提交于
Helper's ->help hook can run concurrently with itself, so iterating over SIP helpers with static pointer won't work reliably. Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com> Signed-off-by: NPatrick McHardy <kaber@trash.net> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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