mm/slab: avoid returning values by reference
Returing values by reference is bad practice. Instead, just use function return value. Signed-off-by: NJoonsoo Kim <iamjoonsoo.kim@lge.com> Suggested-by: NChristoph Lameter <cl@linux.com> Acked-by: NChristoph Lameter <cl@linux.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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