Subject: Re: [PATCH] netfilter: use per-cpu recursive spinlock (v6)

From: Eric Dumazet <[email-masked]>
Date: Thu, 16 Apr 2009 18:20:04 +0200

Eric Dumazet a écrit :

> I also considered using regular spinlocks and spin_trylock() to "detect"
> the recurse case without a global counter.
> 
> lock :
> local_bh_disable();
> int locked = spin_trylock(&__get_cpu_var(arp_tables_lock);
> 
> unlock:
> 
> if (likely(locked))
> 	spin_unlock(&__get_cpu_var(arp_tables_lock));
> local_bh_enable();
> 
> But we would lose some runtime features, I dont feel comfortable about
> this trylock version. What others people think ?
> 

Oh well, this wont work of course, forget about this trylock thing :)

--
To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in
the body of a message to [email-masked]
More majordomo info at  http://vger.kernel.org/majordomo-info.html