Re: [PATCH] ipvs:Fix locking requirements in the function ip_vs_unlink_service

[Julian Anastasov <ja@xxxxxx>]

        Hello,

On Sat, 12 Sep 2015, Nicholas Krause wrote:

> This fixes locking requirements in the function ip_vs_unlink_service
> to properly use bottom half spinlocking around the call to the function
> __ip_vs_del_service  in order to meet the locking that this paricular
> function requires as stated in it's comments related to locking.

> +     spin_lock_bh(&svc->sched_lock);
>       __ip_vs_del_service(svc, cleanup);
> +     spin_unlock_bh(&svc->sched_lock);

        BH locking is not needed anymore. Also, sched_lock is
used by schedulers to protect only access to svc->sched_data
fields.

        It seems the comment is outdated after
commit ceec4c381681 ("ipvs: convert services to rcu").

Regards

--
Julian Anastasov <ja@xxxxxx>
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