From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753897AbdJNPPC (ORCPT ); Sat, 14 Oct 2017 11:15:02 -0400 Received: from mail-pg0-f52.google.com ([74.125.83.52]:56546 "EHLO mail-pg0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753261AbdJNPPB (ORCPT ); Sat, 14 Oct 2017 11:15:01 -0400 X-Google-Smtp-Source: AOwi7QAsQb+3yoIf23D4xQDXsaRFe+ZlWoxbbeqE3U7BabtyFOmPpDWlo1F+ACUJzJLQiI7V+Bc07w== Subject: Re: [PATCH for linux-next] mm/page-writeback.c: make changes of dirty_writeback_centisecs take effect immediately To: Yafang Shao , akpm@linux-foundation.org Cc: jack@suse.cz, hannes@cmpxchg.org, vdavydov.dev@gmail.com, jlayton@redhat.com, nborisov@suse.com, tytso@mit.edu, yamada.masahiro@socionext.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org References: <1507970307-16431-1-git-send-email-laoar.shao@gmail.com> From: Jens Axboe Message-ID: <082a7d89-d2c1-cef7-e07d-d7876f653e92@kernel.dk> Date: Sat, 14 Oct 2017 09:14:53 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 MIME-Version: 1.0 In-Reply-To: <1507970307-16431-1-git-send-email-laoar.shao@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/14/2017 02:38 AM, Yafang Shao wrote: > This patch is the followup of the prvious patch: > [writeback: schedule periodic writeback with sysctl]. > > There's another issue to fix. > For example, > - When the tunable was set to one hour and is reset to one second, the > new setting will not take effect for up to one hour. > > Kicking the flusher threads immediately fixes it. Queued up, thanks. -- Jens Axboe