Ah, I almost got it right. It discarded too much, thus reducing throughput - even more subtle. https://github.com/torvalds/linux/commit/18aba41cbfbcd138e9f6d8d

Ah, I almost got it right. It discarded too much, thus reducing throughput - even more subtle. https://github.com/torvalds/linux/commit/18aba41cbfbcd138e9f6d8d446427d8b7691c194 https://github.com/torvalds/linux/commit/18aba41cbfbcd138e9f...