netdev - Documentation: rw_lock lessons learned

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Date:	Fri, 13 Nov 2009 09:59:29 +0100
From:	Stefan Richter <stefanr@...6.in-berlin.de>
To:	Stephen Hemminger <shemminger@...tta.com>
CC:	sclark46@...thlink.net,
	William Allen Simpson <william.allen.simpson@...il.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel Developers <linux-kernel@...r.kernel.org>,
	Linux Kernel Network Developers <netdev@...r.kernel.org>,
	Eric Dumazet <eric.dumazet@...il.com>
Subject: Documentation: rw_lock lessons learned

Stephen Hemminger wrote:
> On Thu, 12 Nov 2009 14:13:03 -0500
> Stephen Clark <sclark46@...thlink.net> 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 Out of date.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>.
-- 
Stefan Richter
-=====-==--= =-== -==-=
http://arcgraph.de/sr/
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