linux-kernel - Re: [PATCH 6.1.y] selftests/mm: Move default_huge_page_size to vm

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Message-ID: <2025102230-scoured-levitator-a530@gregkh>
Date: Wed, 22 Oct 2025 09:40:49 +0200
From: Greg KH <greg@...ah.com>
To: Leon Hwang <leon.hwang@...ux.dev>
Cc: stable@...r.kernel.org, akpm@...ux-foundation.org, david@...hat.com,
	lorenzo.stoakes@...cle.com, shuah@...nel.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, Lance Yang <lance.yang@...ux.dev>
Subject: Re: [PATCH 6.1.y] selftests/mm: Move default_huge_page_size to
 vm_util.c

On Wed, Oct 22, 2025 at 01:51:38PM +0800, Leon Hwang wrote:
> Fix the build error:
> 
> map_hugetlb.c: In function 'main':
> map_hugetlb.c:79:25: warning: implicit declaration of function 'default_huge_page_size' [-Wimplicit-function-declaration]
>    79 |         hugepage_size = default_huge_page_size();
>       |                         ^~~~~~~~~~~~~~~~~~~~~~
> /usr/bin/ld: /tmp/ccYOogvJ.o: in function 'main':
> map_hugetlb.c:(.text+0x114): undefined reference to 'default_huge_page_size'
> 
> According to the latest selftests, 'default_huge_page_size' has been
> moved to 'vm_util.c'. So fix the error by the same way.
> 
> Reviewed-by: Lance Yang <lance.yang@...ux.dev>
> Signed-off-by: Leon Hwang <leon.hwang@...ux.dev>
> ---
>  tools/testing/selftests/vm/Makefile      |  1 +
>  tools/testing/selftests/vm/userfaultfd.c | 24 ------------------------
>  tools/testing/selftests/vm/vm_util.c     | 21 +++++++++++++++++++++
>  tools/testing/selftests/vm/vm_util.h     |  1 +
>  4 files changed, 23 insertions(+), 24 deletions(-)


What commit id does this fix?  And again, why not just take the original
commits instead?

thanks,

greg k-h