netdev - Re: [Xen-devel] [PATCH 4/4] [Net] Support accelerated network plugin modules

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Message-ID: <C2987D7E.93CF%Keir.Fraser@cl.cam.ac.uk>
Date:	Fri, 15 Jun 2007 17:31:42 +0100
From:	Keir Fraser <Keir.Fraser@...cam.ac.uk>
To:	Kieran Mansley <kmansley@...arflare.com>,
	Zhu Han <schumi.han@...il.com>
CC:	<netdev@...r.kernel.org>, <xen-devel@...ts.xensource.com>,
	<herbert@...dor.apana.org.au>
Subject: Re: [Xen-devel] [PATCH 4/4] [Net] Support accelerated network
 plugin modules

On 15/6/07 17:22, "Kieran Mansley" <kmansley@...arflare.com> wrote:

> The lock protects the use_count variable.

Yes, that's one thing I noticed -- can you use atomic_t for reference counts
and hence reduce the number of times you need to lock/unlock? At least the
open-coded lock-decrement-test-maybe-free-unlock sequences could be
abstracted into a put_foo() function.

 -- Keir

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