KSM_RUN_MERGE    2404 mm/ksm.c       	return (ksm_run & KSM_RUN_MERGE) && !list_empty(&ksm_mm_head.mm_list);
KSM_RUN_MERGE    2941 mm/ksm.c       	if (flags & KSM_RUN_MERGE)
KSM_RUN_MERGE    3209 mm/ksm.c       	ksm_run = KSM_RUN_MERGE;	/* no way for user to start it */