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[Xen-devel] problem with netback netif copying_receiver flag



hi,
I'm confused with  !! when setting netback rx_copy flag.
be->netif->copying_receiver = !!rx_copy
here why use !! ?

why not just
be->netif->copying_receiver = rx_copy

thanks in advance!

Zang Hongyong
zanghongyong@xxxxxxxxxx
2008-06-02


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