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Jason Xing says: ==================== locklessly protect left members in struct rps_dev_flow From: Jason Xing <[email protected]> Since Eric did a more complicated locklessly change to last_qtail member[1] in struct rps_dev_flow, the left members are easier to change as the same. One thing important I would like to share by qooting Eric: "rflow is located in rxqueue->rps_flow_table, it is thus private to current thread. Only one cpu can service an RX queue at a time." So we only pay attention to the reader in the rps_may_expire_flow() and writer in the set_rps_cpu(). They are in the two different contexts. [1]: https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=3b4cf29bdab v3 Link: https://lore.kernel.org/all/[email protected]/ 1. adjust the protection in a right way (Eric) v2 1. fix passing wrong type qtail. ==================== Signed-off-by: David S. Miller <[email protected]>
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