From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752343AbbGMV1b (ORCPT ); Mon, 13 Jul 2015 17:27:31 -0400 Received: from mx1.redhat.com ([209.132.183.28]:50766 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752219AbbGMV1a (ORCPT ); Mon, 13 Jul 2015 17:27:30 -0400 Date: Mon, 13 Jul 2015 23:25:48 +0200 From: Oleg Nesterov To: Al Viro , Jan Kara , Linus Torvalds , Paul McKenney , Peter Zijlstra Cc: Daniel Wagner , Davidlohr Bueso , Ingo Molnar , Tejun Heo , linux-kernel@vger.kernel.org Subject: [PATCH 1/4] change get_super_thawed() to use sb_start/end_write() Message-ID: <20150713212548.GA13873@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150713212536.GA13855@redhat.com> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Preparation. get_super_thawed() can do sb_start/end_write() with the same effect, we are going to kill sb_writers->wait_unfrozen. --- fs/super.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/super.c b/fs/super.c index 928c20f..5ea0edd 100644 --- a/fs/super.c +++ b/fs/super.c @@ -621,8 +621,8 @@ struct super_block *get_super_thawed(struct block_device *bdev) if (!s || s->s_writers.frozen == SB_UNFROZEN) return s; up_read(&s->s_umount); - wait_event(s->s_writers.wait_unfrozen, - s->s_writers.frozen == SB_UNFROZEN); + sb_start_write(s); + sb_end_intwrite(s); put_super(s); } } -- 1.5.5.1