Re: [PATCH 3/5] can: af_can.c use rcu_barrier() on module unload.

Oliver Hartkopp
2009-06-08T13:24:58Z

Jesper Dangaard Brouer wrote:
> This module uses rcu_call() thus it should use rcu_barrier()
> on module unload.
>
> Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk>

Thanks Jesper for pointing at this issue!

Acked-By: Oliver Hartkopp <oliver@hartkopp.net>

Btw. i do agree with theses patches to be a bug fix that should go into
2.6.30-rc8 as well as into the stable series.

Best regards,
Oliver

> ---
>
> net/can/af_can.c | 2 ++
> 1 files changed, 2 insertions(+), 0 deletions(-)
>
> diff --git a/net/can/af_can.c b/net/can/af_can.c
> index 10f0528..e733725 100644
> --- a/net/can/af_can.c
> +++ b/net/can/af_can.c
> @@ -903,6 +903,8 @@ static __exit void can_exit(void)
> }
> spin_unlock(&can_rcvlists_lock);
>
> + rcu_barrier(); /* Wait for completion of call_rcu()'s */
> +
> kmem_cache_destroy(rcv_cache);
> }
>
>
> --
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