linux-kernel - Re: [PATCH 02/10] zcache: fix refcount leak

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Date:	Wed, 20 Jun 2012 10:54:46 +0800
From:	Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com>
To:	Seth Jennings <sjenning@...ux.vnet.ibm.com>
CC:	Dan Magenheimer <dan.magenheimer@...cle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>, linux-mm@...ck.org,
	Konrad Wilk <konrad.wilk@...cle.com>,
	Nitin Gupta <ngupta@...are.org>
Subject: Re: [PATCH 02/10] zcache: fix refcount leak

On 06/20/2012 04:06 AM, Seth Jennings wrote:

> On 06/19/2012 02:49 PM, Dan Magenheimer wrote:
> 
>> My preference would be to fix it the opposite way, by
>> checking and ignoring zcache_host in zcache_put_pool.
>> The ref-counting is to ensure that a client isn't
>> accidentally destroyed while in use (for multiple-client
>> users such as ramster and kvm) and since zcache_host is a static
>> struct, it should never be deleted so need not be ref-counted.
> 
> 
> If we do that, we'll need to comment it.  If we don't, it won't be
> obvious why we are refcounting every zcache client except one.  It'll
> look like a bug.


Okay, i will fix it like Dan's way and comment it.

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