Re: ip_queue getting rtnetlink semaphore?

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On Thu, Mar 08, 2001 at  9:45AM +1100, James Morris wrote:
> rtnl is a global semaphore for serializing net device events.  I vaguely
> recall the argument that it belongs in rtnetlink because this is the
> 'home' for net admin code.

What's being serialized? Now that I'm looking deeper, I see
rntl_(un)lock being called in core network code, in net device drivers,
and in protocol code. How does one know when that mutex needs to be
held?

Jason
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