From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754983AbcEDUQs (ORCPT ); Wed, 4 May 2016 16:16:48 -0400 Received: from mga11.intel.com ([192.55.52.93]:17442 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754532AbcEDUQo (ORCPT ); Wed, 4 May 2016 16:16:44 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.24,578,1455004800"; d="scan'208";a="946361442" Subject: Re: mm: pages are not freed from lru_add_pvecs after process termination To: "Odzioba, Lukasz" , Michal Hocko References: <5720F2A8.6070406@intel.com> <20160428143710.GC31496@dhcp22.suse.cz> <20160502130006.GD25265@dhcp22.suse.cz> Cc: "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , "Shutemov, Kirill" , "Anaczkowski, Lukasz" From: Dave Hansen Message-ID: <572A58AB.6090106@intel.com> Date: Wed, 4 May 2016 13:16:43 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 05/04/2016 12:41 PM, Odzioba, Lukasz wrote: > Do you see any advantages of dropping THP from pagevecs over this solution? It's a more foolproof solution. Even with this patch, there might still be some corner cases where the draining doesn't occur. That "two minutes" might be come 20 or 200 under some circumstances.