ipv6: Use __fls() instead of fls() in __ipv6_addr_diff().
Because we have ensured that the argument is non-zero, it is better to use __fls() and generate better code. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -422,7 +422,7 @@ static inline int __ipv6_addr_diff(const void *token1, const void *token2, int a
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for (i = 0; i < addrlen; i++) {
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__be32 xb = a1[i] ^ a2[i];
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if (xb)
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return i * 32 + 32 - fls(ntohl(xb));
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return i * 32 + 31 - __fls(ntohl(xb));
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}
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/*
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