From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753641AbeFDPWo (ORCPT ); Mon, 4 Jun 2018 11:22:44 -0400 Received: from mail.kernel.org ([198.145.29.99]:50158 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752772AbeFDPWn (ORCPT ); Mon, 4 Jun 2018 11:22:43 -0400 From: Chao Yu To: jaegeuk@kernel.org Cc: linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, Chao Yu Subject: [PATCH 1/2] f2fs: don't change wbc->sync_mode Date: Mon, 4 Jun 2018 23:20:35 +0800 Message-Id: <20180604152036.23764-1-chao@kernel.org> X-Mailer: git-send-email 2.16.2.17.g38e79b1fd Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Chao Yu We should never falsify wbc->sync_mode passed from mm, otherwise mm can trigger writeback with wrong IO priority. Signed-off-by: Chao Yu --- fs/f2fs/node.c | 1 - 1 file changed, 1 deletion(-) diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index 513f03d823b6..64ad5466887f 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -1741,7 +1741,6 @@ static int f2fs_write_node_pages(struct address_space *mapping, trace_f2fs_writepages(mapping->host, wbc, NODE); diff = nr_pages_to_write(sbi, NODE, wbc); - wbc->sync_mode = WB_SYNC_NONE; blk_start_plug(&plug); f2fs_sync_node_pages(sbi, wbc, true, FS_NODE_IO); blk_finish_plug(&plug); -- 2.16.2.17.g38e79b1fd