f2fs: disable roll-forward when active_logs = 2

The roll-forward mechanism should be activated when the number of active
logs is not 2.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 46311e7..54722a0 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -132,6 +132,8 @@
 		need_cp = true;
 	else if (test_opt(sbi, FASTBOOT))
 		need_cp = true;
+	else if (sbi->active_logs == 2)
+		need_cp = true;
 
 	return need_cp;
 }
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 2fb3d7f..16721b5d 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -1090,8 +1090,8 @@
 		else
 			return CURSEG_COLD_DATA;
 	} else {
-		if (IS_DNODE(page) && !is_cold_node(page))
-			return CURSEG_HOT_NODE;
+		if (IS_DNODE(page) && is_cold_node(page))
+			return CURSEG_WARM_NODE;
 		else
 			return CURSEG_COLD_NODE;
 	}