+ selftests-mm-init-page-sizes-early-in-pagemap_ioctl-test.patch added to mm-new branch

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

The patch titled
     Subject: selftests/mm: init page sizes early in pagemap_ioctl test
has been added to the -mm mm-new branch.  Its filename is
     selftests-mm-init-page-sizes-early-in-pagemap_ioctl-test.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-mm-init-page-sizes-early-in-pagemap_ioctl-test.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.

The mm-new branch of mm.git is not included in linux-next

If a few days of testing in mm-new is successful, the patch will me moved
into mm.git's mm-unstable branch, which is included in linux-next

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------------------------------------------------------
From: "Zenghui Yu (Huawei)" <zenghui.yu@linux.dev>
Subject: selftests/mm: init page sizes early in pagemap_ioctl test
Date: Tue, 8 Sep 2026 21:44:05 +0800

Initialize page_size and hpage_size before calling init_uffd(),
hugetlb_setup_default(), etc.  That won't fix anything, but it is safer
and saner to get these globals set up before doing other things.

While at it, drop the page_size parameter of transact_test(), which is
actually unnecessary.

Link: https://lore.kernel.org/20260908134405.84448-1-zenghui.yu@linux.dev
Signed-off-by: Zenghui Yu (Huawei) <zenghui.yu@linux.dev>
Suggested-by: Andrew Morton <akpm@linux-foundation.org>
  Link: https://lore.kernel.org/20260628111329.9cfcd9c67925869307020aba@linux-foundation.org/
Cc: David Hildenbrand (Arm) <david@kernel.org>
Cc: Gregory Price <gourry@gourry.net>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 tools/testing/selftests/mm/pagemap_ioctl.c |   10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

--- a/tools/testing/selftests/mm/pagemap_ioctl.c~selftests-mm-init-page-sizes-early-in-pagemap_ioctl-test
+++ a/tools/testing/selftests/mm/pagemap_ioctl.c
@@ -1488,7 +1488,7 @@ static void *thread_proc(void *mem)
 	return NULL;
 }
 
-static void transact_test(int page_size)
+static void transact_test(void)
 {
 	unsigned int i, count, extra_pages;
 	unsigned int c;
@@ -1652,6 +1652,9 @@ int main(int __attribute__((unused)) arg
 
 	ksft_print_header();
 
+	page_size = getpagesize();
+	hpage_size = read_pmd_pagesize();
+
 	if (init_uffd())
 		ksft_exit_skip("Failed to initialize userfaultfd\n");
 
@@ -1660,9 +1663,6 @@ int main(int __attribute__((unused)) arg
 
 	ksft_set_plan(119);
 
-	page_size = getpagesize();
-	hpage_size = read_pmd_pagesize();
-
 	pagemap_fd = open(PAGEMAP, O_RDONLY);
 	if (pagemap_fd < 0)
 		ksft_exit_fail_msg("Failed to open " PAGEMAP "\n");
@@ -1822,7 +1822,7 @@ int main(int __attribute__((unused)) arg
 	mprotect_tests();
 
 	/* 13. Transact test */
-	transact_test(page_size);
+	transact_test();
 
 	/* 14. Sanity testing */
 	sanity_tests();
_

Patches currently in -mm which might be from zenghui.yu@linux.dev are

selftests-mm-fix-incorrect-skip-output-in-pkey_sighandler_tests.patch
mm-damon-core-remove-declaration-of-__damon_commit_ctx.patch
selftests-mm-remove-unreachable-returns-after-ksft-exit-helpers.patch
docs-mm-damon-design-fix-broken-ref-usage-and-a-typo.patch
selftests-mm-fix-size-truncation-in-pagemap_ioctl-test.patch
selftests-mm-mark-file-local-symbols-of-pagemap_ioctlc-static.patch
selftests-mm-init-page-sizes-early-in-pagemap_ioctl-test.patch