Re: [BUG] 2.2.1[78] : RTNETLINK lock not properly locking ?

From: Willy Tarreau (
Date: Thu Nov 23 2000 - 01:14:32 EST

> 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.

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