Re: [PATCH net-next v2 3/3] ipv6: per netns FIB garbage collection

From: Cong Wang
Date: Tue Mar 08 2016 - 13:36:30 EST

On Tue, Mar 8, 2016 at 5:44 AM, Michal Kubecek <mkubecek@xxxxxxx> wrote:
> One of our customers observed issues with FIB6 garbage collectors
> running in different network namespaces blocking each other, resulting
> in soft lockups (fib6_run_gc() initiated from timer runs always in
> forced mode).
> Now that FIB6 walkers are separated per namespace, there is no more need
> for instances of fib6_run_gc() in different namespaces blocking each
> other. There is still a call to icmp6_dst_gc() which operates on shared
> data but this function is protected by its own shared lock.
> Signed-off-by: Michal Kubecek <mkubecek@xxxxxxx>

Reviewed-by: Cong Wang <xiyou.wangcong@xxxxxxxxx>