Re: [PATCH v1 09/10] selftests/mm: remove READ_ONLY_THP_FOR_FS in khugepaged

[Lorenzo Stoakes (Oracle)]

On Thu, Mar 26, 2026 at 09:42:54PM -0400, Zi Yan wrote:
> Change the requirement to a file system with large folio support and the
> supported order needs to include PMD_ORDER.
>
> Signed-off-by: Zi Yan <ziy@xxxxxxxxxx>

LGTM, so:

Reviewed-by: Lorenzo Stoakes (Oracle) <ljs@xxxxxxxxxx>

> ---
>  tools/testing/selftests/mm/khugepaged.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/tools/testing/selftests/mm/khugepaged.c b/tools/testing/selftests/mm/khugepaged.c
> index 3fe7ef04ac62..bdcdd31beb1e 100644
> --- a/tools/testing/selftests/mm/khugepaged.c
> +++ b/tools/testing/selftests/mm/khugepaged.c
> @@ -1086,8 +1086,8 @@ static void usage(void)
>  	fprintf(stderr, "\t<context>\t: [all|khugepaged|madvise]\n");
>  	fprintf(stderr, "\t<mem_type>\t: [all|anon|file|shmem]\n");
>  	fprintf(stderr, "\n\t\"file,all\" mem_type requires [dir] argument\n");
> -	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\t\"file,all\" mem_type requires a file system\n");
> +	fprintf(stderr,	"\twith large folio support (order >= PMD order)\n");
>  	fprintf(stderr, "\n\tif [dir] is a (sub)directory of a tmpfs mount, tmpfs must be\n");
>  	fprintf(stderr,	"\tmounted with huge=advise option for khugepaged tests to work\n");
>  	fprintf(stderr,	"\n\tSupported Options:\n");
> --
> 2.43.0
>