netdev - Re: [PATCH] inetpeer: optimizations

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Date:	Sun, 6 Dec 2009 19:53:09 +0100
From:	Jarek Poplawski <jarkao2@...il.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	"David S. Miller" <davem@...emloft.net>,
	Linux Netdev List <netdev@...r.kernel.org>
Subject: Re: [PATCH] inetpeer: optimizations

On Sun, Dec 06, 2009 at 07:22:10PM +0100, Jarek Poplawski wrote:
> AFAICS this lock here can only to prevent double linking to the
> unused_peers list during such transitions. If so, it could be replaced
> with the list_empty(&p->unused) test before list_add_tail(), and
> atomic_dec_test() without the lock would be enough (unless I miss
> something ;-).

Hmm... But I missed something: the last atomic_dec() should be done
under the lock yet, so let's forget it.

Jarek P.
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