linux-kernel - Re: [Cluster-devel] [PATCH] dlm: remove unnecessary error check

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Date:	Thu, 11 Jun 2015 10:39:16 +0800
From:	Guoqing Jiang <gqJiang@...e.com>
To:	Bob Peterson <rpeterso@...hat.com>
CC:	ccaulfie@...hat.com, teigland@...hat.com, cluster-devel@...hat.com,
	linux-kernel@...r.kernel.org
Subject: Re: [Cluster-devel] [PATCH] dlm: remove unnecessary error check

Bob Peterson wrote:
>
>>>>     
>>>>         
>>>>> ----- Original Message -----
>>>>>   
>>>>>       
>>>>>           
>>>>>> We don't need the redundant logic since send_message always returns 0.
>>>>>>
>>>>>> Signed-off-by: Guoqing Jiang <gqjiang@...e.com>
>>>>>> ---
>>>>>>  fs/dlm/lock.c | 10 ++--------
>>>>>>  1 file changed, 2 insertions(+), 8 deletions(-)
>>>>>>
>>>>>> diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c
>>>>>> index 35502d4..6fc3de9 100644
>>>>>> --- a/fs/dlm/lock.c
>>>>>> +++ b/fs/dlm/lock.c
>>>>>> @@ -3656,10 +3656,7 @@ static int send_common(struct dlm_rsb *r, struct
>>>>>> dlm_lkb *lkb, int mstype)
>>>>>>  
>>>>>>  	send_args(r, lkb, ms);
>>>>>>  
>>>>>> -	error = send_message(mh, ms);
>>>>>> -	if (error)
>>>>>> -		goto fail;
>>>>>> -	return 0;
>>>>>> +	return send_message(mh, ms);
>>>>>>             
>
> Hi Guoqing,
>
> Sorry, I was momentarily confused. I think you misunderstood what I was saying.
> What I meant was: Instead of doing:
>
> +	return send_message(mh, ms);
> ...where send_message returns 0, it might be better to have:
>
> static void send_message(struct dlm_mhandle *mh, struct dlm_message *ms)
> {
> 	dlm_message_out(ms);
> 	dlm_lowcomms_commit_buffer(mh);
> }
>
> ...And in send_common, do (in both places):
> +	send_message(mh, ms);
> +	return 0;
>
> Since it's so short, it might even be better to code send_message as a macro,
> or at least an "inline" function.
>
>   
Hi Bob,

Got it, thanks. It is a better solution but it is not a bug fix or
similar thing, so maybe just leave it as it is.

Regards,
Guoqing


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