From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vivek Goyal Subject: Re: [Lsf-pc] [LSF/MM TOPIC] [ATTEND] Future writeback topics Date: Mon, 23 Jan 2012 15:19:04 -0500 Message-ID: <20120123201904.GN25986@redhat.com> References: <4F1C141C.2050704@panasas.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mx1.redhat.com ([209.132.183.28]:40570 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753912Ab2AWUTk (ORCPT ); Mon, 23 Jan 2012 15:19:40 -0500 Content-Disposition: inline In-Reply-To: <4F1C141C.2050704@panasas.com> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: Boaz Harrosh Cc: lsf-pc@lists.linux-foundation.org, linux-scsi , linux-fsdevel , Andrea Arcangeli , Dave Chinner , Wu Fengguang , Jan Kara , "Martin K. Petersen" On Sun, Jan 22, 2012 at 03:50:20PM +0200, Boaz Harrosh wrote: > Hi > > Now that we have the "IO-less dirty throttling" in and kicking (ass I might say) > Are there plans for second stage? I can see few areas that need some love. > > [IO Fairness, time sorted writeback, properly delayed writeback] > > As we started to talk about in another thread: "[LSF/MM TOPIC] a few storage topics" > I would like to propose the following topics: > > * Do we have enough information for the time of dirty of pages, such as the > IO-elevators information, readily available to be used at the VFS layer. Assuming it is available, what's the plan. How would VFS layer make use of it? Thanks Vivek