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Use SLAB_NO_MERGE flag to prevent merging instead of providing an empty constructor. Using an empty constructor in this manner is an abuse of slab interface. The SLAB_NO_MERGE flag should be used with caution, but in this case, it is acceptable as the cache is intended solely for debugging purposes. No functional changes intended. Link: https://lkml.kernel.org/r/20250318015926.1629748-1-harry.yoo@oracle.com Signed-off-by: Harry Yoo <harry.yoo@oracle.com> Reviewed-by: Alexander Potapenko <glider@google.com> Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com> Acked-by: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Dmitriy Vyukov <dvyukov@google.com> Cc: Vincenzo Frascino <vincenzo.frascino@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>