"Hen, Shmulik" wrote:
> the thing is I need to prevent Tx/Rx when a topology change is initiated
> from the ioctl (registering a virtual adapter is just one example), so they
> all share a single lock and I must use spin_lock_bh from the ioctl.
I do not think that they all need to shared a single lock. And we don't
have your code, but spin_lock_bh may be an incorrect choice too.
Note that when topology changes, that is an operation which might take
more than a few milliseconds. Therefore, your solution should do
something OTHER than spinning on a lock, while topology is changing.
dev->open and dev->do_ioctl are called with rtnl_lock already held. You
can sleep in them. Use that to your advantage...
-- Jeff Garzik | Building 1024 | Would you like a Twinkie? MandrakeSoft | - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Wed Nov 15 2000 - 21:00:22 EST