* [merged mm-stable] tools-mm-thp_swap_allocator_test-fix-small-folio-alignment.patch removed from -mm tree
@ 2026-01-21 3:27 Andrew Morton
0 siblings, 0 replies; only message in thread
From: Andrew Morton @ 2026-01-21 3:27 UTC (permalink / raw)
To: mm-commits, akpm, kaushlendra.kumar, akpm
The quilt patch titled
Subject: tools/mm/thp_swap_allocator_test: fix small folio alignment
has been removed from the -mm tree. Its filename was
tools-mm-thp_swap_allocator_test-fix-small-folio-alignment.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Kaushlendra Kumar <kaushlendra.kumar@intel.com>
Subject: tools/mm/thp_swap_allocator_test: fix small folio alignment
Date: Tue, 9 Dec 2025 08:47:45 +0530
Use ALIGNMENT_SMALLFOLIO instead of ALIGNMENT_MTHP when allocating small
folios to ensure correct memory alignment for the test case.
Before: test allocates small folios with 64KB alignment
(ALIGNMENT_MTHP) when only 4KB alignment (ALIGNMENT_SMALLFOLIO) is
needed. This wastes address space and may cause allocation failures on
systems with fragmented memory.
Worst-case impact: this only affects thp_swap_allocator_test tool
behavior.
Link: https://lkml.kernel.org/r/20251209031745.2723120-1-kaushlendra.kumar@intel.com
Signed-off-by: Kaushlendra Kumar <kaushlendra.kumar@intel.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
tools/mm/thp_swap_allocator_test.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/tools/mm/thp_swap_allocator_test.c~tools-mm-thp_swap_allocator_test-fix-small-folio-alignment
+++ a/tools/mm/thp_swap_allocator_test.c
@@ -142,7 +142,7 @@ int main(int argc, char *argv[])
}
if (use_small_folio) {
- mem2 = aligned_alloc_mem(MEMSIZE_SMALLFOLIO, ALIGNMENT_MTHP);
+ mem2 = aligned_alloc_mem(MEMSIZE_SMALLFOLIO, ALIGNMENT_SMALLFOLIO);
if (mem2 == NULL) {
fprintf(stderr, "Failed to allocate small folios memory\n");
free(mem1);
_
Patches currently in -mm which might be from kaushlendra.kumar@intel.com are
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2026-01-21 3:27 [merged mm-stable] tools-mm-thp_swap_allocator_test-fix-small-folio-alignment.patch removed from -mm tree Andrew Morton
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