From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755364AbcB1VxG (ORCPT ); Sun, 28 Feb 2016 16:53:06 -0500 Received: from mail-oi0-f68.google.com ([209.85.218.68]:35683 "EHLO mail-oi0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755040AbcB1VxE (ORCPT ); Sun, 28 Feb 2016 16:53:04 -0500 Date: Sun, 28 Feb 2016 16:53:00 -0500 From: Tejun Heo To: Al Viro Cc: Jan Kara , Tahsin Erdogan , Jens Axboe , cgroups@vger.kernel.org, "Theodore Ts'o" , Nauman Rafique , linux-kernel@vger.kernel.org, Jan Kara Subject: Re: [PATCH block/for-4.5-fixes] writeback: keep superblock pinned during cgroup writeback association switches Message-ID: <20160228215300.GU3965@htj.duckdns.org> References: <20160217223009.GN14140@quack.suse.cz> <20160217230231.GC6479@mtj.duckdns.org> <20160218095538.GA4338@quack.suse.cz> <20160218130033.GE6479@mtj.duckdns.org> <20160219201805.GZ17997@ZenIV.linux.org.uk> <20160219205147.GN13177@mtj.duckdns.org> <20160219215811.GA17997@ZenIV.linux.org.uk> <20160219221512.GO13177@mtj.duckdns.org> <20160219222609.GC17997@ZenIV.linux.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20160219222609.GC17997@ZenIV.linux.org.uk> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, Al. On Fri, Feb 19, 2016 at 10:26:09PM +0000, Al Viro wrote: > Is that code OK with e.g. running in parallel with remounting filesystem r/o? AFAICS, yeah. It doesn't care about the sb or filesystem at all. All it touches is generic inodes and their pages. Thanks. -- tejun