diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 8ee1fa5..f554703 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -99,7 +99,7 @@
 	if (handle->h_buffer_credits > needed)
 		return 0;
 	err = ext4_journal_extend(handle, needed);
-	if (err)
+	if (err <= 0)
 		return err;
 	return ext4_journal_restart(handle, needed);
 }