+ selftests-mm-fix-split_huge_page_test-for-folio_split-tests.patch added to mm-hotfixes-unstable branch

+ selftests-mm-fix-split_huge_page_test-for-folio_split-tests.patch added to mm-hotfixes-unstable branch

[Andrew Morton]

The patch titled
     Subject: selftests/mm: fix split_huge_page_test for folio_split() tests.
has been added to the -mm mm-hotfixes-unstable branch.  Its filename is
     selftests-mm-fix-split_huge_page_test-for-folio_split-tests.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-mm-fix-split_huge_page_test-for-folio_split-tests.patch

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

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------------------------------------------------------
From: Zi Yan <ziy@nvidia.com>
Subject: selftests/mm: fix split_huge_page_test for folio_split() tests.
Date: Tue, 8 Jul 2025 21:27:59 -0400

PID_FMT does not have an offset field, so folio_split() tests are not
performed.  Add PID_FMT_OFFSET with an offset field and use it to perform
folio_split() tests.

Link: https://lkml.kernel.org/r/20250709012800.3225727-1-ziy@nvidia.com
Fixes: 80a5c494c89f ("selftests/mm: add tests for folio_split(), buddy allocator like split")
Signed-off-by: Zi Yan <ziy@nvidia.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Barry Song <baohua@kernel.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Mariano Pache <npache@redhat.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 tools/testing/selftests/mm/split_huge_page_test.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/tools/testing/selftests/mm/split_huge_page_test.c~selftests-mm-fix-split_huge_page_test-for-folio_split-tests
+++ a/tools/testing/selftests/mm/split_huge_page_test.c
@@ -31,6 +31,7 @@ uint64_t pmd_pagesize;
 #define INPUT_MAX 80
 
 #define PID_FMT "%d,0x%lx,0x%lx,%d"
+#define PID_FMT_OFFSET "%d,0x%lx,0x%lx,%d,%d"
 #define PATH_FMT "%s,0x%lx,0x%lx,%d"
 
 #define PFN_MASK     ((1UL<<55)-1)
@@ -483,7 +484,7 @@ void split_thp_in_pagecache_to_order_at(
 		write_debugfs(PID_FMT, getpid(), (uint64_t)addr,
 			      (uint64_t)addr + fd_size, order);
 	else
-		write_debugfs(PID_FMT, getpid(), (uint64_t)addr,
+		write_debugfs(PID_FMT_OFFSET, getpid(), (uint64_t)addr,
 			      (uint64_t)addr + fd_size, order, offset);
 
 	for (i = 0; i < fd_size; i++)
_

Patches currently in -mm which might be from ziy@nvidia.com are

selftests-mm-fix-split_huge_page_test-for-folio_split-tests.patch
mm-rename-config_page_block_order-to-config_page_block_max_order.patch
mm-page_alloc-pageblock-flags-functions-clean-up.patch
mm-page_isolation-make-page-isolation-a-standalone-bit.patch
mm-page_alloc-add-support-for-initializing-pageblock-as-isolated.patch
mm-page_isolation-remove-migratetype-from-move_freepages_block_isolate.patch
mm-page_isolation-remove-migratetype-from-undo_isolate_page_range.patch
mm-page_isolation-remove-migratetype-parameter-from-more-functions.patch