[to-be-updated] selftests-mm-skip-split_huge_page_test-without-the-split_huge_pages-file.patch removed from -mm tree

[to-be-updated] selftests-mm-skip-split_huge_page_test-without-the-split_huge_pages-file.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: selftests/mm: skip split_huge_page_test without the split_huge_pages file
has been removed from the -mm tree.  Its filename was
     selftests-mm-skip-split_huge_page_test-without-the-split_huge_pages-file.patch

This patch was dropped because an updated version will be issued

------------------------------------------------------
From: Sasha Levin <sashal@kernel.org>
Subject: selftests/mm: skip split_huge_page_test without the split_huge_pages file
Date: Wed,  4 Nov 2026 22:02:42 -0500

Every case in split_huge_page_test goes through
/sys/kernel/debug/split_huge_pages.  When that file does not exist,
because debugfs is not mounted or the kernel has no CONFIG_DEBUG_FS, the
first write bails out of the whole test and it is reported as a failure:

  Bail out! write_file(/sys/kernel/debug/split_huge_pages): No such file or directory

Skip the test in that case.

Link: https://lore.kernel.org/20261105030242.1241448-1-sashal@kernel.org
Fixes: fa6c02315f74 ("mm: huge_memory: a new debugfs interface for splitting THP tests")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Kiryl Shutsemau (Meta) <kas@kernel.org>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: Zi Yan <ziy@nvidia.com>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Nico Pache <nico.pache@linux.dev>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Lance Yang <lance.yang@linux.dev>
Cc: Usama Arif <usama.arif@linux.dev>
Cc: Shuah Khan <shuah@kernel.org>
---

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

--- a/tools/testing/selftests/mm/split_huge_page_test.c~selftests-mm-skip-split_huge_page_test-without-the-split_huge_pages-file
+++ a/tools/testing/selftests/mm/split_huge_page_test.c
@@ -610,6 +610,9 @@ int main(int argc, char **argv)
 	if (!thp_is_enabled())
 		ksft_exit_skip("Transparent Hugepages not available\n");
 
+	if (access(SPLIT_DEBUGFS, W_OK))
+		ksft_exit_skip("%s: %s\n", SPLIT_DEBUGFS, strerror(errno));
+
 	if (argc > 1)
 		optional_xfs_path = argv[1];
 
_

Patches currently in -mm which might be from sashal@kernel.org are

selftests-proc-cast-the-procmap_query-address-through-uintptr_t.patch
selftests-mm-fix-pointer-width-warnings-on-32-bit-architectures.patch
selftests-mm-uffd-wp-mremap-keep-the-thp-sizes-in-unsigned-long.patch
selftests-proc-search-the-kernel-headers-before-the-tools-copies.patch
selftests-prctl-select-the-tests-by-arch-alone.patch