netfilter: xt_rateest: Better struct xt_rateest layout
We currently dirty two cache lines in struct xt_rateest, this hurts SMP performance. This patch moves lock/bstats/rstats at beginning of structure so that they share a single cache line. Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com> Signed-off-by: NPatrick McHardy <kaber@trash.net>
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