From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751275AbcDNFDg (ORCPT ); Thu, 14 Apr 2016 01:03:36 -0400 Received: from mezzanine.sirena.org.uk ([106.187.55.193]:40498 "EHLO mezzanine.sirena.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750914AbcDNFDf (ORCPT ); Thu, 14 Apr 2016 01:03:35 -0400 Date: Thu, 14 Apr 2016 06:03:14 +0100 From: Mark Brown To: Tejun Heo Cc: Christoph Hellwig , Linus Walleij , Paolo Valente , Jens Axboe , Fabio Checconi , Arianna Avanzini , linux-block@vger.kernel.org, "linux-kernel@vger.kernel.org" , Ulf Hansson Message-ID: <20160414050314.GE29471@sirena.org.uk> References: <1454364778-25179-1-git-send-email-paolo.valente@linaro.org> <1454364778-25179-10-git-send-email-paolo.valente@linaro.org> <20160211222210.GC3741@mtj.duckdns.org> <8FDE2B10-9BD2-4741-917F-5A37A74E5B58@linaro.org> <20160217170206.GU3741@mtj.duckdns.org> <72E81252-203C-4EB7-8459-B9B7060029C6@linaro.org> <20160301184656.GI3965@htj.duckdns.org> <20160304173947.GA16764@infradead.org> <20160413195422.GE20142@htj.duckdns.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="ILuaRSyQpoVaJ1HG" Content-Disposition: inline In-Reply-To: <20160413195422.GE20142@htj.duckdns.org> X-Cookie: Love thy neighbor, tune thy piano. User-Agent: Mutt/1.5.24 (2015-08-30) X-SA-Exim-Connect-IP: 2a01:348:6:8808:fab::3 X-SA-Exim-Mail-From: broonie@sirena.org.uk Subject: Re: [PATCH RFC 09/22] block, cfq: replace CFQ with the BFQ-v0 I/O scheduler X-SA-Exim-Version: 4.2.1 (built Mon, 26 Dec 2011 16:24:06 +0000) X-SA-Exim-Scanned: Yes (on mezzanine.sirena.org.uk) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --ILuaRSyQpoVaJ1HG Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Wed, Apr 13, 2016 at 03:54:22PM -0400, Tejun Heo wrote: > On Fri, Mar 04, 2016 at 09:39:47AM -0800, Christoph Hellwig wrote: > > Btw, can someone explain why you guys waste so much time hacking and > > arguing about a legacy codebase (old request code and I/O schedulers) > > that everyone would really like to see disappear. Why don't you > > spend your time on blk-mq where you have an entirely clean slate > > for scheduling? > idk, are we gonna duplicate a full disk scheduler on blk-mq path? I > think it'd be more sensible to make blk-mq call into the old elevator > path for scheduling IOs on rotating rusts. It's not just rust, it's also lower end solid state devices. --ILuaRSyQpoVaJ1HG Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQEcBAEBCAAGBQJXDySRAAoJECTWi3JdVIfQ3e0H+wbSjLAgTuIVffCacDA32jPw 8AT6tBUnrwbLMK6sS6A/p/z6CtMk8l/NWGCAqwMD8HcqNMWL/fpWM/YYPU97n1bd YYLqT2KDFdeJZ0oSAQkhvmCLN+hJTT4N238wLYxLcnhE9Fld4WNPhEBcQibkbzUY kVOpqcHveQ5hSsdtxeR+tvP6JqAKqLVg/TyjJmWf0uWrp2wWTh9CFUJ3CFsmoCIf dDRaRVnAKdJJNUtb/lUJc8xA5DVYO9KKzb6WBPG8OSj3Yzrps59iU3JkHZqinQTy 1PLPiJqkAnAsIIuuqnAeEQeYvZw3Z29i44x1rWNzb9pDs3A0I3a4wct0C70L1fo= =NS7M -----END PGP SIGNATURE----- --ILuaRSyQpoVaJ1HG--