Messages in this thread | | | Date | Fri, 6 Jun 2003 10:57:53 -0300 | From | Werner Almesberger <> | Subject | Re: [PATCH][ATM] use rtnl_{lock,unlock} during device operations (take 2) |
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David S. Miller wrote: > This is very different from how you are using the lock+rtnl scheme > for your ATM stuff.
What should help in the ATM code is that it pushes synchronization "down", i.e. "close" functions usually can't return until they are truly done (or at least have made sure there is nothing externally visible left).
In the case of devices, delayed removal is possible, but is then initiated when closing a VCC (VCCs act as an implicit reference count for devices), which is another synchronous operation.
VCC creation/removal in response to other asynchronous activity, e.g. after ARP, is relayed through user-space demons, which then make normal system calls to implement the change.
- Werner
-- _________________________________________________________________________ / Werner Almesberger, Buenos Aires, Argentina wa@almesberger.net / /_http://www.almesberger.net/____________________________________________/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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