Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753878AbaGKOvT (ORCPT ); Fri, 11 Jul 2014 10:51:19 -0400 Received: from mx1.redhat.com ([209.132.183.28]:49474 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753486AbaGKOvS (ORCPT ); Fri, 11 Jul 2014 10:51:18 -0400 Message-ID: <53BFF995.5020602@redhat.com> Date: Fri, 11 Jul 2014 10:49:57 -0400 From: Rik van Riel User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0 MIME-Version: 1.0 To: Maxim Patlasov , akpm@linux-foundation.org CC: linux-kernel@vger.kernel.org, mhocko@suse.cz, linux-mm@kvack.org, kosaki.motohiro@jp.fujitsu.com, fengguang.wu@intel.com, jweiner@redhat.com Subject: Re: [PATCH] mm/page-writeback.c: fix divide by zero in bdi_dirty_limits References: <20140711081656.15654.19946.stgit@localhost.localdomain> In-Reply-To: <20140711081656.15654.19946.stgit@localhost.localdomain> X-Enigmail-Version: 1.6 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 07/11/2014 04:18 AM, Maxim Patlasov wrote: > Under memory pressure, it is possible for dirty_thresh, calculated > by global_dirty_limits() in balance_dirty_pages(), to equal zero. > Then, if strictlimit is true, bdi_dirty_limits() tries to resolve > the proportion: > > bdi_bg_thresh : bdi_thresh = background_thresh : dirty_thresh > > by dividing by zero. > > Signed-off-by: Maxim Patlasov Acked-by: Rik van Riel - -- All rights reversed -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJTv/mVAAoJEM553pKExN6Dw8UH/1KgQrLYDTVQIzvaXNxPwxOv xXqrWAnFf+mOflA/Tu/TqOwPUV20YSWTAuJU/NbyLSR0Ak15beCjH4ObifpgZgR+ k9lvJNHEk6XUQH0nERsHcwbNZMGtLBAvyw1oRCVXm6V1IVpbpp0IckP29KP5Ibs4 FChNNna/h7zOTpgysTtuKDO6JGuPy+sCjK5aNVH0jSTd4ENtTD1HtfkgtU/OZVyS m8afzJ0sp/A1sQGy+41ZorR3I0dAmtX3Qtx335QjrZQAy8bT3jCLBLjEHW9xQhCh afuZhfHdrXHiNh8RZnLgeFWiVzYHDc6ytoD7aZQsxaFZIlyccVRzc7SvarrT4ys= =jTrs -----END PGP SIGNATURE----- -- 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/