linux-kernel - Re: [PATCH] selftests: mm: fix the incorrect usage() info of khugepaged

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Message-ID: <37ce9dfa-3193-4e11-bfd1-d2c8b60b0090@arm.com>
Date: Thu, 17 Oct 2024 12:31:31 +0530
From: Anshuman Khandual <anshuman.khandual@....com>
To: Nanyong Sun <sunnanyong@...wei.com>, akpm@...ux-foundation.org,
 shuah@...nel.org, zokeefe@...gle.com
Cc: linux-mm@...ck.org, linux-kselftest@...r.kernel.org,
 linux-kernel@...r.kernel.org, wangkefeng.wang@...wei.com
Subject: Re: [PATCH] selftests: mm: fix the incorrect usage() info of
 khugepaged

On 10/15/24 07:32, Nanyong Sun wrote:
> The mount option of tmpfs should be huge=advise, not madvise
> which is not supported and may mislead the users.

Agreed.

> 
> Fixes: 1b03d0d558a2 ("selftests/vm: add thp collapse file and tmpfs testing")

But nothing is really broken here. This just fixes usage information.
Please drop the "Fixes:".

> Signed-off-by: Nanyong Sun <sunnanyong@...wei.com>
> ---
>  tools/testing/selftests/mm/khugepaged.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/testing/selftests/mm/khugepaged.c b/tools/testing/selftests/mm/khugepaged.c
> index 56d4480e8d3c..8a4d34cce36b 100644
> --- a/tools/testing/selftests/mm/khugepaged.c
> +++ b/tools/testing/selftests/mm/khugepaged.c
> @@ -1091,7 +1091,7 @@ static void usage(void)
>  	fprintf(stderr, "\n\t\"file,all\" mem_type requires kernel built with\n");
>  	fprintf(stderr,	"\tCONFIG_READ_ONLY_THP_FOR_FS=y\n");
>  	fprintf(stderr, "\n\tif [dir] is a (sub)directory of a tmpfs mount, tmpfs must be\n");
> -	fprintf(stderr,	"\tmounted with huge=madvise option for khugepaged tests to work\n");
> +	fprintf(stderr,	"\tmounted with huge=advise option for khugepaged tests to work\n");
>  	fprintf(stderr,	"\n\tSupported Options:\n");
>  	fprintf(stderr,	"\t\t-h: This help message.\n");
>  	fprintf(stderr,	"\t\t-s: mTHP size, expressed as page order.\n");

Without the above "Fixes:" tag,

Reviewed-by: Anshuman Khandual <anshuman.khandual@....com>