Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751969AbdFZP1l (ORCPT ); Mon, 26 Jun 2017 11:27:41 -0400 Received: from gum.cmpxchg.org ([85.214.110.215]:47044 "EHLO gum.cmpxchg.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751418AbdFZP1i (ORCPT ); Mon, 26 Jun 2017 11:27:38 -0400 Date: Mon, 26 Jun 2017 11:27:28 -0400 From: Johannes Weiner To: Michal Hocko Cc: Andrew Morton , Mel Gorman , linux-mm@kvack.org, LKML , Alkis Georgopoulos , Michal Hocko Subject: Re: [PATCH] mm: document highmem_is_dirtyable sysctl Message-ID: <20170626152728.GA13340@cmpxchg.org> References: <20170626093200.18958-1-mhocko@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20170626093200.18958-1-mhocko@kernel.org> User-Agent: Mutt/1.8.3 (2017-05-23) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 579 Lines: 13 On Mon, Jun 26, 2017 at 11:32:00AM +0200, Michal Hocko wrote: > From: Michal Hocko > > It seems that there are still people using 32b kernels which a lot of > memory and the IO tend to suck a lot for them by default. Mostly because > writers are throttled too when the lowmem is used. We have > highmem_is_dirtyable to work around that issue but it seems we never > bothered to document it. Let's do it now, finally. > > Cc: Alkis Georgopoulos > Signed-off-by: Michal Hocko Acked-by: Johannes Weiner