From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andi Kleen Subject: Re: [PATCH] Allow increasing the buffer-head per-CPU LRU size Date: Thu, 10 Jul 2014 16:17:23 +0200 Message-ID: <20140710141723.GS18735@two.firstfloor.org> References: <53B667F9.90306@bull.net> <87y4w6sbp7.fsf@tassilo.jf.intel.com> <53BA772C.6040506@bull.net> <20140707163003.GA18735@two.firstfloor.org> <20140707152936.a286b0f46ae1b06aa41c1959@linux-foundation.org> <20140707224634.GE18735@two.firstfloor.org> <53BB8F7C.1060505@bull.net> <53BE37E5.4030407@bull.net> <20140710000745.37be4400.akpm@linux-foundation.org> <53BE40E3.6000101@bull.net> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Andrew Morton , Andi Kleen , viro@zeniv.linux.org.uk, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org To: Sebastien Buisson Return-path: Content-Disposition: inline In-Reply-To: <53BE40E3.6000101@bull.net> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org On Thu, Jul 10, 2014 at 09:29:39AM +0200, Sebastien Buisson wrote: >=20 > Le 10/07/2014 09:07, Andrew Morton a =E9crit : > >This hardwires 16 if ext4"a and 8 otherwise. There's no way for > >anyone to alter this decision if they think it will be helpful (or > >harmful) in their setup. >=20 > In fact I do not know how to let experienced people alter the value > without confusing the others with yet another obscure config option > (Andi's comment). I would welcome any suggestion to achieve this. I don't think we should generally expose it. If someone really wants to experiment they can change the source. -Andi --=20 ak@linux.intel.com -- Speaking for myself only.