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Date: Fri, 16 Oct 2015 19:17:55 +0800 From: shifei ge <shifeige@...look.com> To: linux-kernel@...r.kernel.org Subject: cfq-iosched:questions about cfqqs' fairness hello everyone, i have some questions about cfq,could you give me some help?thanks! codes: cfq_service_tree_add:rb_key = cfq_slice_offset(cfqd, cfqq) + jiffies; my questions as blew: 1,why use max_slice - cfqq_slice to dertermine offset in service tree, how the offset guarantee cfqqs' fairness whithin the servicetree? 2,why we add jiffies? thanks again.
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