diff --git a/mm/khugepaged.c b/mm/khugepaged.c
index ee8812578563..ff389d970b68 100644
--- a/mm/khugepaged.c
+++ b/mm/khugepaged.c
@@ -1758,6 +1758,10 @@ static void collapse_file(struct mm_struct *mm,
 				filemap_flush(mapping);
 				result = SCAN_FAIL;
 				goto xa_unlocked;
+			} else if (PageWriteback(page)) {
+				xas_unlock_irq(&xas);
+				result = SCAN_FAIL;
+				goto xa_unlocked;
 			} else if (trylock_page(page)) {
 				get_page(page);
 				xas_unlock_irq(&xas);
@@ -1793,7 +1797,8 @@ static void collapse_file(struct mm_struct *mm,
 			goto out_unlock;
 		}
 
-		if (!is_shmem && PageDirty(page)) {
+		if (!is_shmem && (PageDirty(page) ||
+				  PageWriteback(page))) {
 			/*
 			 * khugepaged only works on read-only fd, so this
 			 * page is dirty because it hasn't been flushed