linux-master/mm/rmap.c

838 	struct folio_referenced_arg *pra = arg;
851 				pra->vm_flags |= VM_LOCKED;
866 			pra->mapcount--;
889 		pra->mapcount--;
904 			pra->vm_flags |= VM_LOCKED;
915 		pra->referenced++;
916 		pra->vm_flags |= vma->vm_flags & ~VM_LOCKED;
919 	if (!pra->mapcount)
927 	struct folio_referenced_arg *pra = arg;
928 	struct mem_cgroup *memcg = pra->memcg;
965 	struct folio_referenced_arg pra = {
971 		.arg = (void *)&pra,
978 	if (!pra.mapcount)
991 	*vm_flags = pra.vm_flags;
996 	return rwc.contended ? -1 : pra.referenced;