Re: Documentation: rw_lock lessons learned

[William Allen Simpson]

Stefan Richter wrote:
> Stephen Hemminger wrote:
> > On Thu, 12 Nov 2009 14:13:03 -0500
> > Stephen Clark <sclark46@xxxxxxxxxxxxx> wrote:
> > > How up to date is this doc?
> > >
> > > http://www.kernel.org/pub/linux/kernel/people/rusty/kernel-locking/index.html
> > Out of date.
> > 1. Missing mutex's which have largely replaced semaphores.
> >
> > 2. Missing change to lock initialization in later kernels.
> >
> > 3. Missing description of lock dependency checker which should be in same guide.
>
> 4. The section on atomic reference counting should refer to <linux/kref.h>.

I'd also read that, and that's where I got some of my wrong thinking.  But
that does point to Documentation/spin_locks.txt, which I took to be
authoritative (and followed).  That's the reason spin_locks.txt should be
updated, as others are having the same problems....

Anybody have answers/updates to Linus's concerns about "pretty old and
bogus language"?

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