include/linux/kmemleak.h: needs slab.h

include/linux/kmemleak.h: In function 'kmemleak_alloc_recursive':
include/linux/kmemleak.h:43: error: 'SLAB_NOLEAKTRACE' undeclared (first use in this function)

Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

include/linux/kmemleak.h

@@ -21,6 +21,8 @@
 #ifndef __KMEMLEAK_H
 #define __KMEMLEAK_H
 
+#include <linux/slab.h>
+
 #ifdef CONFIG_DEBUG_KMEMLEAK
 
 extern void kmemleak_init(void) __ref;