linux-kernel - Re: [PATCH v3] NFS: put net on idr allocation failure

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Message-ID: <4FBBA6BC.3070409@parallels.com>
Date:	Tue, 22 May 2012 18:46:20 +0400
From:	Stanislav Kinsbursky <skinsbursky@...allels.com>
To:	"Myklebust, Trond" <Trond.Myklebust@...app.com>
CC:	"bfields@...ldses.org" <bfields@...ldses.org>,
	"linux-nfs@...r.kernel.org" <linux-nfs@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devel@...nvz.org" <devel@...nvz.org>
Subject: Re: [PATCH v3] NFS: put net on idr allocation failure

On 22.05.2012 18:45, Myklebust, Trond wrote:
> On Tue, 2012-05-22 at 18:41 +0400, Stanislav Kinsbursky wrote:
>> On 22.05.2012 18:37, Myklebust, Trond wrote:
>>> On Tue, 2012-05-22 at 12:03 +0400, Stanislav Kinsbursky wrote:
>>>> Signed-off-by: Stanislav Kinsbursky<skinsbursky@...allels.com>
>>>> ---
>>>>    fs/nfs/client.c |    4 +++-
>>>>    1 files changed, 3 insertions(+), 1 deletions(-)
>>>>
>>>> diff --git a/fs/nfs/client.c b/fs/nfs/client.c
>>>> index 44cd70f..ae29d4f 100644
>>>> --- a/fs/nfs/client.c
>>>> +++ b/fs/nfs/client.c
>>>> @@ -176,8 +176,10 @@ static struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_
>>>>
>>>>    #ifdef CONFIG_NFS_V4
>>>>    	err = nfs_get_cb_ident_idr(clp, cl_init->minorversion);
>>>> -	if (err)
>>>> +	if (err) {
>>>> +		put_net(clp->net);
>>>>    		goto error_cleanup;
>>>> +	}
>>>>
>>>>    	spin_lock_init(&clp->cl_lock);
>>>>    	INIT_DELAYED_WORK(&clp->cl_renewd, nfs4_renew_state);
>>>>
>>>
>>> Let's just move the actual get_net() call to the end of the function.
>>>
>>
>> Ok. But it will look a bit strange, like this:
>>
>> clp->net = net;
>> ...
>> nfs_get_cb_ident_idr
>> ...
>> get_net(clp->net)
>>
>> Or I can pass net to nfs_get_cb_ident_idr() as a parameter.
>> Which solution is more preferable&?
>
> Just put the get_net() at the end. It doesn't matter if it looks a bit
> odd: the intent is still obvious.
>

Sure.

-- 
Best regards,
Stanislav Kinsbursky
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