+ selftests-mm-do-check_huge_anon-with-a-number-been-passed-in.patch added to mm-new branch

[Andrew Morton <akpm@linux-foundation.org>]

The patch titled
     Subject: selftests/mm: do check_huge_anon() with a number been passed in
has been added to the -mm mm-new branch.  Its filename is
     selftests-mm-do-check_huge_anon-with-a-number-been-passed-in.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-mm-do-check_huge_anon-with-a-number-been-passed-in.patch

This patch will later appear in the mm-new branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Note, mm-new is a provisional staging ground for work-in-progress
patches, and acceptance into mm-new is a notification for others take
notice and to finish up reviews.  Please do not hesitate to respond to
review feedback and post updated versions to replace or incrementally
fixup patches in mm-new.

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------------------------------------------------------
From: Wei Yang <richard.weiyang@gmail.com>
Subject: selftests/mm: do check_huge_anon() with a number been passed in
Date: Sat, 9 Aug 2025 19:42:09 +0000

Currently it hard codes the number of hugepage to check for
check_huge_anon(), but it would be more reasonable to do the check based
on a number passed in.

Pass in the hugepage number and do the check based on it.

Link: https://lkml.kernel.org/r/20250809194209.30484-1-richard.weiyang@gmail.com
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Reviewed by: Donet Tom <donettom@linux.ibm.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Reviewed-by: wang lian <lianux.mm@gmail.com>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 tools/testing/selftests/mm/split_huge_page_test.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/tools/testing/selftests/mm/split_huge_page_test.c~selftests-mm-do-check_huge_anon-with-a-number-been-passed-in
+++ a/tools/testing/selftests/mm/split_huge_page_test.c
@@ -107,12 +107,12 @@ static char *allocate_zero_filled_hugepa
 	return result;
 }
 
-static void verify_rss_anon_split_huge_page_all_zeroes(char *one_page, size_t len)
+static void verify_rss_anon_split_huge_page_all_zeroes(char *one_page, int nr_hpages, size_t len)
 {
 	unsigned long rss_anon_before, rss_anon_after;
 	size_t i;
 
-	if (!check_huge_anon(one_page, 4, pmd_pagesize))
+	if (!check_huge_anon(one_page, nr_hpages, pmd_pagesize))
 		ksft_exit_fail_msg("No THP is allocated\n");
 
 	rss_anon_before = rss_anon();
@@ -143,7 +143,7 @@ void split_pmd_zero_pages(void)
 	size_t len = nr_hpages * pmd_pagesize;
 
 	one_page = allocate_zero_filled_hugepage(len);
-	verify_rss_anon_split_huge_page_all_zeroes(one_page, len);
+	verify_rss_anon_split_huge_page_all_zeroes(one_page, nr_hpages, len);
 	ksft_test_result_pass("Split zero filled huge pages successful\n");
 	free(one_page);
 }
_

Patches currently in -mm which might be from richard.weiyang@gmail.com are

mm-rmap-do-__folio_mod_stat-in-__folio_add_rmap.patch
selftests-mm-do-check_huge_anon-with-a-number-been-passed-in.patch