From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1752763Ab3J2Unt (ORCPT <rfc822;w@1wt.eu>);
	Tue, 29 Oct 2013 16:43:49 -0400
Received: from mail.linuxfoundation.org ([140.211.169.12]:38628 "EHLO
	mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1752040Ab3J2Uns (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Tue, 29 Oct 2013 16:43:48 -0400
Date: Tue, 29 Oct 2013 13:43:46 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: Jan Kara <jack@suse.cz>
Cc: Karl Kiniger <karl.kiniger@med.ge.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        "Artem S. Tashkinov" <t.artem@lycos.com>,
        Wu Fengguang <fengguang.wu@intel.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Disabling in-memory write cache for x86-64 in Linux II
Message-Id: <20131029134346.9e5873bae3630e9a69891773@linux-foundation.org>
In-Reply-To: <20131029203050.GE9568@quack.suse.cz>
References: <160824051.3072.1382685914055.JavaMail.mail@webmail07>
	<CA+55aFxj81TRhe1+FJWqER7VVH_z_Sk0+hwtHvniA0ATsF_eKw@mail.gmail.com>
	<1814253454.3449.1382689853825.JavaMail.mail@webmail07>
	<CA+55aFxhJUrqdvw1To=9KLdxhYAOVwZLLeJT5yMRY5BT1weuHA@mail.gmail.com>
	<20131025091555.GA30895@kipc2.localdomain>
	<20131029203050.GE9568@quack.suse.cz>
X-Mailer: Sylpheed 3.2.0beta5 (GTK+ 2.24.10; x86_64-pc-linux-gnu)
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Tue, 29 Oct 2013 21:30:50 +0100 Jan Kara <jack@suse.cz> wrote:

> Andrew has queued up a patch series from Maxim Patlasov which removes this
> caveat but currently we don't have a way admin can switch that from
> userspace. But I'd like to have that tunable from userspace exactly for the
> cases as you describe below.

This?

commit 5a53748568f79641eaf40e41081a2f4987f005c2
Author:     Maxim Patlasov <mpatlasov@parallels.com>
AuthorDate: Wed Sep 11 14:22:46 2013 -0700
Commit:     Linus Torvalds <torvalds@linux-foundation.org>
CommitDate: Wed Sep 11 15:58:04 2013 -0700

    mm/page-writeback.c: add strictlimit feature

That's already in mainline, for 3.12.