Re: PATCH 2.4.0.9.2: export ethtool interface

[Andi Kleen <ak@xxxxxx>]

On Sun, Oct 01, 2000 at 05:39:21PM +0200, kuznet@xxxxxxxxxxxxx wrote:
> Hello!
> 
> > Yes.  On 2.4 (at least) there is nothing to prevent the driver's ioctl()
> > function from running on two or more CPUs simultaneously.
> 
> I apologize, the reply is late a bit.
> 
> However, I have to remind that open/close/ioctl __are__ serialized
> with global semaphore.
> 
> To Andi: BKL is fully useless here, just because these calls are allowed
> to sleep.

Of course it can sleep, in this case they have to lock themselves. With the
BKL it would at least not be worse than in 2.2.

[overall I think drivers/net/* is full of holes there, and 2.4 just made it much
worse]


-Andi