Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753361Ab3J2Vgp (ORCPT ); Tue, 29 Oct 2013 17:36:45 -0400 Received: from mail-vc0-f182.google.com ([209.85.220.182]:56815 "EHLO mail-vc0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752039Ab3J2Vgo (ORCPT ); Tue, 29 Oct 2013 17:36:44 -0400 MIME-Version: 1.0 In-Reply-To: <20131029134346.9e5873bae3630e9a69891773@linux-foundation.org> References: <160824051.3072.1382685914055.JavaMail.mail@webmail07> <1814253454.3449.1382689853825.JavaMail.mail@webmail07> <20131025091555.GA30895@kipc2.localdomain> <20131029203050.GE9568@quack.suse.cz> <20131029134346.9e5873bae3630e9a69891773@linux-foundation.org> Date: Tue, 29 Oct 2013 14:36:43 -0700 X-Google-Sender-Auth: v3G6IltcXgij3bCjsEK_1LQVhjo Message-ID: Subject: Re: Disabling in-memory write cache for x86-64 in Linux II From: Linus Torvalds To: Andrew Morton Cc: Jan Kara , Karl Kiniger , "Artem S. Tashkinov" , Wu Fengguang , Linux Kernel Mailing List Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 917 Lines: 25 On Tue, Oct 29, 2013 at 1:43 PM, Andrew Morton wrote: > On Tue, 29 Oct 2013 21:30:50 +0100 Jan Kara 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? > > mm/page-writeback.c: add strictlimit feature > > That's already in mainline, for 3.12. Nothing currently actually *sets* the BDI_CAP_STRICTLIMIT flag, though. So it's a potential fix, but it's certainly not a fix now. Linus -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/