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SubjectRe: [PATCH] Read-Copy Update 2.5.4-pre2

> > > in lkml in the past. Currently there are several potential
> > > applications of RCU that are being developed and some of them look
> > > very promising. Our revamped webpage
> >
> > yes, but have you evaluated whether it's noticably better than
> > other forms of locking? for instance, couldn't your dcache example
> > simply use BR locks?
> First of all, IMO, RCU is not a wholesale replacement for one form of
> locking or another. It provides two things -
> 1. Simplify locking in certain complicated cases - like module
> unloading or Hotplug CPU support.

I thought that refrigerator mechanism might be handy for hotplug CPU
support -- essentially stop whole userland, do your job, restart
userland... Its part of swsusp.
(about SSSCA) "I don't say this lightly. However, I really think that the U.S.
no longer is classifiable as a democracy, but rather as a plutocracy." --hpa
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