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tools/mm/thp_swap_allocator_test: fix small folio alignment

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>

authored by

Kaushlendra Kumar and committed by
Andrew Morton 9f5edd78 6e4930e3

+1 -1
+1 -1
tools/mm/thp_swap_allocator_test.c
··· 142 142 } 143 143 144 144 if (use_small_folio) { 145 - mem2 = aligned_alloc_mem(MEMSIZE_SMALLFOLIO, ALIGNMENT_MTHP); 145 + mem2 = aligned_alloc_mem(MEMSIZE_SMALLFOLIO, ALIGNMENT_SMALLFOLIO); 146 146 if (mem2 == NULL) { 147 147 fprintf(stderr, "Failed to allocate small folios memory\n"); 148 148 free(mem1);