linux-kernel - Re: [PATCH] documentation: fix broken lkml archive links in RCU requirements

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Date:   Fri, 9 Sep 2016 07:33:55 -0700
From:   "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:     Richard Weinberger <richard.weinberger@...il.com>
Cc:     Michael Opdenacker <michael.opdenacker@...e-electrons.com>,
        Jonathan Corbet <corbet@....net>,
        Josh Triplett <josh@...htriplett.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        mathieu.desnoyers@...icios.com, jiangshanlai@...il.com,
        LKML <linux-kernel@...r.kernel.org>,
        "linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>
Subject: Re: [PATCH] documentation: fix broken lkml archive links in RCU
 requirements

On Fri, Sep 09, 2016 at 04:17:14PM +0200, Richard Weinberger wrote:
> Michael,
> 
> On Fri, Sep 9, 2016 at 3:43 PM, Michael Opdenacker
> <michael.opdenacker@...e-electrons.com> wrote:
> > Fix 4 LKML archive links that became broken (data loss
> > on mail-archive.com?)
> >
> > Working links were found on Paul McKenney's RCU articles
> > on LWN.net, from which the documentation originates:
> > http://lwn.net/Articles/652156/
> > http://lwn.net/Articles/652677/
> > http://lwn.net/Articles/653326/
> >
> > Signed-off-by: Michael Opdenacker <michael.opdenacker@...e-electrons.com>
> > ---
> >  Documentation/RCU/Design/Requirements/Requirements.html | 8 ++++----
> >  1 file changed, 4 insertions(+), 4 deletions(-)
> >
> > diff --git a/Documentation/RCU/Design/Requirements/Requirements.html b/Documentation/RCU/Design/Requirements/Requirements.html
> > index ece410f40436..2adb3d43ce44 100644
> > --- a/Documentation/RCU/Design/Requirements/Requirements.html
> > +++ b/Documentation/RCU/Design/Requirements/Requirements.html
> > @@ -1527,7 +1527,7 @@ However, as I learned from Matt Mackall's
> >  <a href="http://elinux.org/Linux_Tiny-FAQ">bloatwatch</a>
> >  efforts, memory footprint is critically important on single-CPU systems with
> >  non-preemptible (<tt>CONFIG_PREEMPT=n</tt>) kernels, and thus
> > -<a href="https://lkml.kernel.org/g/20090113221724.GA15307@linux.vnet.ibm.com">tiny RCU</a>
> > +<a href="http://lkml.org/lkml/2009/1/14/449">tiny RCU</a>
> >  was born.
> >  Josh Triplett has since taken over the small-memory banner with his
> >  <a href="https://tiny.wiki.kernel.org/">Linux kernel tinification</a>
> > @@ -1975,7 +1975,7 @@ guard against mishaps and misuse:
> >         and cleaned up with <tt>destroy_rcu_head()</tt>.
> >         Mathieu Desnoyers made me aware of this requirement, and also
> >         supplied the needed
> > -       <a href="https://lkml.kernel.org/g/20100319013024.GA28456@Krystal">patch</a>.
> > +       <a href="https://lkml.org/lkml/2010/3/18/417">patch</a>.
> 
> Please don't add lkml.org. It does not use message ids for indexing.
> With knowing the message id you can query any other archive.
> e.g. http://marc.info/?i=20100319013024.GA28456@Krystal
> By adding lkml.org you kill that information. Archives come and go,
> the message id is the only common query id we have.
> 
> IMHO kernel.org admins should fix/improve their redirection service to
> point to a working service.

There has been some instability in the kernel.org redirection.  Right
now, the /r/ services seems to work, though as noted the /g/ does not.
Please report this to the Kernel.org administrators:

	https://kernel.org/category/contact-us.html

							Thanx, Paul