slub: correct comments error for per cpu partial

Correct comment errors, that mistake cpu partial objects number as pages
number, may make reader misunderstand.
Signed-off-by: Alex Shi <alex.shi@intel.com>
Reviewed-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

include/linux/slub_def.h

@@ -82,7 +82,7 @@ struct kmem_cache {
 	int size;		/* The size of an object including meta data */
 	int objsize;		/* The size of an object without meta data */
 	int offset;		/* Free pointer offset. */
-	int cpu_partial;	/* Number of per cpu partial pages to keep around */
+	int cpu_partial;	/* Number of per cpu partial objects to keep around */
 	struct kmem_cache_order_objects oo;
 
 	/* Allocation and freeing of slabs */

mm/slub.c

@@ -3084,7 +3084,7 @@ static int kmem_cache_open(struct kmem_cache *s,
 	 *
 	 * A) The number of objects from per cpu partial slabs dumped to the
 	 *    per node list when we reach the limit.
-	 * B) The number of objects in partial partial slabs to extract from the
+	 * B) The number of objects in cpu partial slabs to extract from the
 	 *    per node list when we run out of per cpu objects. We only fetch 50%
 	 *    to keep some capacity around for frees.
 	 */