From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751611AbcAZUBI (ORCPT ); Tue, 26 Jan 2016 15:01:08 -0500 Received: from mail.kernel.org ([198.145.29.136]:45841 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751563AbcAZUBG (ORCPT ); Tue, 26 Jan 2016 15:01:06 -0500 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: use wq_has_sleeper for cp_wait wait_queue Date: Tue, 26 Jan 2016 12:01:03 -0800 Message-Id: <1453838463-42536-1-git-send-email-jaegeuk@kernel.org> X-Mailer: git-send-email 2.6.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org We need to use wq_has_sleeper including smp_mb to consider cp_wait concurrency. Signed-off-by: Jaegeuk Kim --- fs/f2fs/data.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index d0675e5..df4d4cc 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -74,8 +74,7 @@ static void f2fs_write_end_io(struct bio *bio) dec_page_count(sbi, F2FS_WRITEBACK); } - if (!get_pages(sbi, F2FS_WRITEBACK) && - !list_empty(&sbi->cp_wait.task_list)) + if (!get_pages(sbi, F2FS_WRITEBACK) && wq_has_sleeper(&sbi->cp_wait)) wake_up(&sbi->cp_wait); bio_put(bio); -- 2.6.3