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A comment on Linux-insides: sequential locks in the Linux kernel.

Re:Linux-insides: sequential locks in the Linux kernel by tfigment on Sunday July 10, 2016 @12:04PM (#12066020)
Not an expert but RCU is more complex with respect to checking the CPU states for activity to ensure consistency. Sequential locks use spinlocks and a counter and allows for concurrent reads. This link [1] actually answers it specifically (sorry about the quora link).

[1] https://www.quora.com/What-is-difference-between-the-RCU-rea...

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Re:Linux-insides: sequential locks in the Linux kernel by r4um on Sunday July 10, 2016 @06:22PM (#12067543)
LWN's coverage is pretty good https://lwn.net/Articles/262464/
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