Re: [nfs:devel 46/51] fs/nfs/write.c:1592:5: error: redefinition of 'nfs_commit_inode'

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On 07/31/2012 08:55 AM, Myklebust, Trond wrote:
> On Tue, 2012-07-31 at 08:47 -0400, Bryan Schumaker wrote:
>> On 07/30/2012 11:14 PM, Myklebust, Trond wrote:
>>> Bryan,
>>>
>>> Why did you switch to using IS_ENABLED in the first place, and why wasn't that put in a separate patch?
>>
>> IS_ENABLED() will check for CONFIG_NFS_V*_MODULE, last I checked the defined() macro doesn't.  Putting this into a separate patch makes the change non-bisectable since gcc will be checking against CONFIG_NFS_V3 but CONFIG_NFS_V3_MODULE is set.  Should I have changed the CONFIG_ variables instead of using IS_ENABLED()?
> 
> Why is it evaluating differently in the include file vs. the .c file?
> Are we missing an include in nfs_fs.h?

Good question.  I don't see any reason that it would evaluate differently, but I'm compiling the .config attached to the initial email to try to figure it out.

- Bryan

> 
>>>
>>>
>>>
>>>> -----Original Message-----
>>>> From: Fengguang Wu [mailto:fengguang.wu@xxxxxxxxx]
>>>> Sent: Monday, July 30, 2012 10:43 PM
>>>> To: Schumaker, Bryan
>>>> Cc: kernel-janitors@xxxxxxxxxxxxxxx; Myklebust, Trond; linux-
>>>> nfs@xxxxxxxxxxxxxxx
>>>> Subject: [nfs:devel 46/51] fs/nfs/write.c:1592:5: error: redefinition of
>>>> 'nfs_commit_inode'
>>>>
>>>> Hi Bryan,
>>>>
>>>> Kernel build failed on
>>>>
>>>> tree:   git://git.linux-nfs.org/projects/trondmy/linux-nfs.git devel
>>>> head:   5c13c9e1c15ee2ca9ab2b953224001af53d9be09
>>>> commit: 1c606fb74c758beafd98cbad9a9133eadeec2371 [46/51] NFS: Convert
>>>> v3 into a module
>>>> config: blackfin-BF533-EZKIT_defconfig (attached as .config)
>>>>
>>>> All related error/warning messages:
>>>>
>>>> fs/nfs/write.c:1592:5: error: redefinition of 'nfs_commit_inode'
>>>> In file included from fs/nfs/write.c:19:0:
>>>> include/linux/nfs_fs.h:547:1: note: previous definition of 'nfs_commit_inode'
>>>> was here
>>>>
>>>> vim +1592 fs/nfs/write.c
>>>>   1589		return status;
>>>>   1590	}
>>>>   1591
>>>>> 1592	int nfs_commit_inode(struct inode *inode, int how)
>>>>   1593	{
>>>>   1594		LIST_HEAD(head);
>>>>   1595		struct nfs_commit_info cinfo;
>>>>
>>>> ---
>>>> 0-DAY kernel build testing backend         Open Source Technology Centre
>>>> Fengguang Wu <wfg@xxxxxxxxxxxxxxx>                     Intel Corporation
>>
> 

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