Re: [RFC] add rtnl semaphore to linux-atm

[Mitchell Blank Jr <mitch@xxxxxxxxxx>]

David S. Miller wrote:
> Part of that is using the rtnl semaphore etc.

I've thought about this some more and I think we really DO want a
per-atm-device semaphore for this rather than overloading rtnl_sem.

A device like an ADSL card might need to do a complete physical-layer
negotiation when you open a VCC (assuming there were no VCCs open
before)  This could take on the order of a minute if it fails.  You
don't want to be hogging rtnl_sem for that long.

-Mitch