Re: [PATCH -next] userfaultfd: remove set but not used variable 'h'

From: Wei Yang
Date: Wed Oct 09 2019 - 23:31:10 EST


On Wed, Oct 09, 2019 at 07:25:18PM -0700, Mike Kravetz wrote:
>On 10/9/19 6:23 PM, Wei Yang wrote:
>> On Wed, Oct 09, 2019 at 05:45:57PM -0700, Mike Kravetz wrote:
>>> On 10/9/19 5:27 AM, YueHaibing wrote:
>>>> Fixes gcc '-Wunused-but-set-variable' warning:
>>>>
>>>> mm/userfaultfd.c: In function '__mcopy_atomic_hugetlb':
>>>> mm/userfaultfd.c:217:17: warning:
>>>> variable 'h' set but not used [-Wunused-but-set-variable]
>>>>
>>>> It is not used since commit 78911d0e18ac ("userfaultfd: use vma_pagesize
>>>> for all huge page size calculation")
>>>>
>>>
>>> Thanks! That should have been removed with the recent cleanups.
>>>
>>>> Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
>>>
>>> Reviewed-by: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
>>
>> If I am correct, this is removed in a recent patch.
>
>I'm having a hard time figuring out what is actually in the latest mmotm
>tree. Andrew added a build fixup patch ab169389eb5 in linux-next which
>adds the reference to h. Is there a patch after that to remove the reference?
>

I checked linux-next tree, this commit removes the reference.

https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=add4eaeef3766b7491d70d473c48c0b6d6ca5cb7

>--
>Mike Kravetz

--
Wei Yang
Help you, Help me