Is ip_build_xmit_slow() unused?

Hello,

I have probably stupid question: what is the purpose of ip_build_xmit_slow()?

Grepping over linux kernel source tree finds only two entries for ip_build_xmit_slow():

net/ipv4/ip_output.c:static int ip_build_xmit_slow(struct sock *sk,

net/ipv4/ip_output.c: return
ip_build_xmit_slow(sk,getfrag,frag,length,ipc,rt,flags);

Please notice that the second entry is inside ip_build_xmit_slow() definition, i.e. this is recursive call.

Is this function really unused?

Alexey

Sorry; the answer was 'broken kernel sources on corrupted filesystem' :(

Alexey