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To: kuznet@ms2.inr.ac.ru
Subject: Re: [BUG] 2.2.1[78] : RTNETLINK lock not properly locking ?
Message-ID: <974960072.3a1cb5c821d96@imp.free.fr>
Date: Thu, 23 Nov 2000 07:14:32 +0100 (MET)
From: Willy Tarreau <willy.lkml@free.fr>
Cc: Willy Tarreau <willy.LKml@free.fr>, linux-kernel@vger.kernel.org
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> It is linux-2.2, guy. 8) "threads" are not threaded there.
> 
> Semaphores (rtnl_lock, particularly) protects only areas, which
> are going to _schedule_ excplicitly or implicitly.

ok, thanks a lot Alexey, now I understand.

> Please, read comments. People used to consider comments as something
> decorative, but they are not. 

I did read them again and again, but you know, when there's something
you don't understand, sometimes you interprete things badly.

> Any questions?
not anymore, of course :-)

> Sorry...
> 
> /* NOTE: these locks are not interrupt safe, are not SMP safe,
>  * they are even not atomic. 8)8)8) ... and it is not a bug.
> etc.
> 
> Do you call this "very precautios"? 8)

I spoke about the first ones :)

thanks a lot, now I know how to proceed.

Cheers,
Willy
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