linux-kernel - Re: [PATCH v3 2/7] atm: add owner of push() callback to atmvcc

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Message-ID: <20121107140522.257c541c@thirdoffive.cmf.nrl.navy.mil>
Date:	Wed, 7 Nov 2012 14:05:22 -0500
From:	chas williams - CONTRACTOR <chas@....nrl.navy.mil>
To:	Krzysztof Mazur <krzysiek@...lesie.net>
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	David Woodhouse <David.Woodhouse@...el.com>,
	davem@...emloft.net
Subject: Re: [PATCH v3 2/7] atm: add owner of push() callback to atmvcc

On Tue,  6 Nov 2012 23:16:57 +0100
Krzysztof Mazur <krzysiek@...lesie.net> wrote:

> The atm is using atmvcc->push(vcc, NULL) callback to notify protocol
> that vcc will be closed and protocol must detach from it. This callback
> is usually used by protocol to decrement module usage count by module_put(),
> but it leaves small window then module is still used after module_put().
> 
> Now the owner of push() callback is kept in atmvcc and
> module_put(atmvcc->owner) is called after the protocol is detached from vcc.
> 
> Signed-off-by: Krzysztof Mazur <krzysiek@...lesie.net>

Acked-by: Chas Williams <chas@....nrl.navy.mil>
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