Date: Sun, 18 May 2003 10:14:13 -0700
From: "Martin J. Bligh" <mbligh@aracnet.com>
To: William Lee Irwin III <wli@holomorphy.com>,
       Arjan van de Ven <arjanv@redhat.com>
cc: ptb@it.uc3m.es, linux-kernel@vger.kernel.org
Subject: Re: recursive spinlocks. Shoot.
Message-ID: <21760000.1053278052@[10.10.2.4]>
In-Reply-To: <20030518165445.GA8978@holomorphy.com>
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--William Lee Irwin III <wli@holomorphy.com> wrote (on Sunday, May 18, 2003 09:54:45 -0700):

> At some point in the past, Peter Breuer's attribution was removed from:
>>>>> Here's a before-breakfast implementation of a recursive spinlock. That
>>>>> is, the same thread can "take" the spinlock repeatedly. 
> 
> On Sun, May 18, 2003 at 09:30:17AM -0700, Martin J. Bligh wrote:
>>>> Why?
> 
> On Sun, 2003-05-18 at 18:35, William Lee Irwin III wrote:
>>> netconsole.
> 
> On Sun, May 18, 2003 at 06:49:04PM +0200, Arjan van de Ven wrote:
>> not really.
>> the netconsole issue is tricky and recursive, but recursive locks aren't
>> the solution; that would require a rewrite of the network drivers. It's
>> far easier to solve it by moving the debug printk's instead.
> 
> Yes, there are better ways to fix it. But AIUI this is why some people
> want it (the rest of us just don't want messy locking semantics around).

Right ... to me this just seems to create confusing code for no really 
good reason that I can see right now.

M.

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