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Subject[thiscpuops upgrade 00/10] Upgrade of this_cpu_ops
A patchset that adds more this_cpu operations and in particular RMV operations
that can be used in various places to avoid address calculations and
memory accesses.

Also adds this_cpu_cmpxchg_double() which is a locally atomic version of
cmpxchg and uses that to demo how a lockless, preemptless fastpath for
memory allocation could work. Works good enough so that I can write this
email with that fastpath scheme.

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