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

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Date:	Thu, 11 Jun 2015 17:47:28 +0800
From:	Guoqing Jiang <gqJiang@...e.com>
To:	David Teigland <teigland@...hat.com>
CC:	Bob Peterson <rpeterso@...hat.com>, ccaulfie@...hat.com,
	cluster-devel@...hat.com, linux-kernel@...r.kernel.org
Subject: Re: [Cluster-devel] [PATCH] dlm: remove unnecessary error check

Hi David,

David Teigland wrote:
> On Wed, Jun 10, 2015 at 11:10:44AM +0800, Guoqing Jiang wrote:
>   
>> The remove_from_waiters could  only be invoked after failed to
>> create_message, right?
>> Since send_message always returns 0, this patch doesn't touch anything
>> about the failure
>> path, and it also doesn't change the original semantic.
>>     
>
> I'm not inclined to take any patches unless there's a problem identified.
>
> .  
>   
Do you consider take the following clean up? If yes, I will send a
formal patch,
otherwise pls ignore it.

diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c
index 35502d4..7c822f7 100644
--- a/fs/dlm/lock.c
+++ b/fs/dlm/lock.c
@@ -3747,30 +3747,7 @@ static int send_bast(struct dlm_rsb *r, struct
dlm_lkb *lkb, int mode)
 
 static int send_lookup(struct dlm_rsb *r, struct dlm_lkb *lkb)
 {
-       struct dlm_message *ms;
-       struct dlm_mhandle *mh;
-       int to_nodeid, error;
-
-       to_nodeid = dlm_dir_nodeid(r);
-
-       error = add_to_waiters(lkb, DLM_MSG_LOOKUP, to_nodeid);
-       if (error)
-               return error;
-
-       error = create_message(r, NULL, to_nodeid, DLM_MSG_LOOKUP, &ms,
&mh);
-       if (error)
-               goto fail;
-
-       send_args(r, lkb, ms);
-
-       error = send_message(mh, ms);
-       if (error)
-               goto fail;
-       return 0;
-
- fail:
-       remove_from_waiters(lkb, DLM_MSG_LOOKUP_REPLY);
-       return error;
+       return send_common(r, lkb, DLM_MSG_LOOKUP);
 }

Thanks,
Guoqing
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