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* We explicitly check for len > 0 here (although it		* We explicitly check for len > 0 here (although it
* isn't really necessary), to work around a gcc		* isn't really necessary), to work around a gcc
* optimization issue - to force gcc to compute		* optimization issue - to force gcc to compute
* len above. Without this check, the computation		* len above. Without this check, the computation
* of len is bungled by the optimizer.		* of len is bungled by the optimizer.
*/		*/
if (len > 0) {		if (len > 0) {
cwin = tp->snd_cwnd -		cwin = tp->snd_cwnd -
(tp->snd_nxt - tp->sack_newdata) -		(tp->snd_nxt - tp->snd_recover) -
sack_bytes_rxmt;		sack_bytes_rxmt;
if (cwin < 0)		if (cwin < 0)
cwin = 0;		cwin = 0;
len = imin(len, cwin);		len = imin(len, cwin);
}		}
}		}
}		}

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