Re: [PATCH v3 3/8] mm/rmap: Split try_to_munlock from try_to_unmap

+	while (page_vma_mapped_walk(&pvmw)) {
+		/*
+		 * If the page is mlock()d, we cannot swap it out.
+		 * If it's recently referenced (perhaps page_referenced
+		 * skipped over this mm) then we should reactivate it.
+		 */
+		if (vma->vm_flags & VM_LOCKED) {
+			/* PTE-mapped THP are never mlocked */
+			if (!PageTransCompound(page)) {
+				/*
+				 * Holding pte lock, we do *not* need
+				 * mmap_lock here
+				 */
+				mlock_vma_page(page);
+			}
+			ret = false;
+			page_vma_mapped_walk_done(&pvmw);
+			break;