diff --git a/mm/mprotect.c b/mm/mprotect.c
index 1e265be25f85bee19d10ca8764473005cf143eb7..7c3628a8b486bce275c8370802eebb8bdfb23d56 100644
--- a/mm/mprotect.c
+++ b/mm/mprotect.c
@@ -153,7 +153,9 @@ static unsigned long change_protection_range(struct vm_area_struct *vma,
 				 dirty_accountable);
 	} while (pgd++, addr = next, addr != end);
 
-	flush_tlb_range(vma, start, end);
+	/* Only flush the TLB if we actually modified any entries: */
+	if (pages)
+		flush_tlb_range(vma, start, end);
 
 	return pages;
 }