From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from [195.159.176.226] ([195.159.176.226]:37235 "EHLO blaine.gmane.org" rhost-flags-FAIL-FAIL-OK-OK) by vger.kernel.org with ESMTP id S932356AbcJUIx5 (ORCPT ); Fri, 21 Oct 2016 04:53:57 -0400 Received: from list by blaine.gmane.org with local (Exim 4.84_2) (envelope-from ) id 1bxVaJ-0007Av-MR for stable@vger.kernel.org; Fri, 21 Oct 2016 10:53:51 +0200 To: stable@vger.kernel.org From: Holger =?iso-8859-1?q?Hoffst=E4tte?= Subject: Re: Fwd: [PATCH] cfq: fix starvation of asynchronous writes Date: Fri, 21 Oct 2016 08:53:17 +0000 (UTC) Message-ID: References: <1474592399-2790-1-git-send-email-glauber@scylladb.com> <20161021073634.GD22683@kroah.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: On Fri, 21 Oct 2016 09:36:34 +0200, Greg KH wrote: > On Thu, Oct 20, 2016 at 02:08:50PM -0400, Glauber Costa wrote: >> subject: [PATCH] cfq: fix starvation of asynchronous writes >> commit id: 3932a86b4b9d1f0b049d64d4591ce58ad18b44ec >> why: cfq starvation, easily can easily trigger with O_DIRECT-heavy workloads. >> versions: all that are maintained, if possible. I have verified it >> cherry picks cleanly at least until 4.5 >> reason for not using "CC stable": I just forgot, sorry. > > It seems to apply to 4.4 as well, is that ok, or should it not go there? FWIW I've had it in 4.4 until recently and it worked just fine. The corner case that is addressed is generic and seems to have been there quite a while. -h