Re: [PATCH][ATM] use rtnl_{lock,unlock} during device operations (take 2)

From: Roman Zippel (zippel@linux-m68k.org)
Date: Mon Jun 09 2003 - 18:34:19 EST


Hi,

On Mon, 9 Jun 2003, David S. Miller wrote:

> > netdev->dead = 1;
> > netdev->op_this = NULL;
> > netdev->op_that = NULL;
> > netdev->op_whatever = NULL;
> > synchronize_kernel();
>
> That assumes of course that the functions don't sleep.
> (RCU isn't really the answer to everything.)
>
> They hold references to the object, it doesn't matter if
> they sleep.

That's not the point. You also have to wait for the already running
operations to finish, before you can allow the module to unload.

bye, Roman

-
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/



This archive was generated by hypermail 2b29 : Sun Jun 15 2003 - 22:00:22 EST