mm: kfence: use PAGE_ALIGNED helper

Use PAGE_ALIGNED macro instead of IS_ALIGNED and passing PAGE_SIZE.

Link: https://lkml.kernel.org/r/20220520021833.121405-1-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Acked-by: Muchun Song <songmuchun@bytedance.com>
Cc: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Author: Kefeng Wang

mm/kfence/kfence_test.c

@@ -296,10 +296,9 @@ static void *test_alloc(struct kunit *test, size_t size, gfp_t gfp, enum allocat
 
 			if (policy == ALLOCATE_ANY)
 				return alloc;
-			if (policy == ALLOCATE_LEFT && IS_ALIGNED((unsigned long)alloc, PAGE_SIZE))
+			if (policy == ALLOCATE_LEFT && PAGE_ALIGNED(alloc))
 				return alloc;
-			if (policy == ALLOCATE_RIGHT &&
-			    !IS_ALIGNED((unsigned long)alloc, PAGE_SIZE))
+			if (policy == ALLOCATE_RIGHT && !PAGE_ALIGNED(alloc))
 				return alloc;
 		} else if (policy == ALLOCATE_NONE)
 			return alloc;