From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751236AbdGOBWs (ORCPT ); Fri, 14 Jul 2017 21:22:48 -0400 Received: from mail.kernel.org ([198.145.29.99]:47736 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751118AbdGOBWq (ORCPT ); Fri, 14 Jul 2017 21:22:46 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4A96D22D3B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=jaegeuk@kernel.org From: Jaegeuk Kim To: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Cc: Jaegeuk Kim Subject: [PATCH] f2fs: avoid cpu lockup Date: Fri, 14 Jul 2017 18:22:45 -0700 Message-Id: <20170715012245.24640-1-jaegeuk@kernel.org> X-Mailer: git-send-email 2.13.0.rc1.294.g07d810a77f-goog Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Before retrying to flush data or dentry pages, we need to release cpu in order to prevent watchdog. Signed-off-by: Jaegeuk Kim --- fs/f2fs/checkpoint.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c index 56bbf592e487..c96913c56f6c 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -909,8 +909,11 @@ int sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type) * wribacking dentry pages in the freeing inode. */ f2fs_submit_merged_write(sbi, DATA); - cond_resched(); } + /* We need to give a chance to get cpu for user file writers. */ + if (!is_dir) + congestion_wait(BLK_RW_ASYNC, HZ/50); + cond_resched(); goto retry; } -- 2.13.0.rc1.294.g07d810a77f-goog