From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759858Ab1LPDfI (ORCPT ); Thu, 15 Dec 2011 22:35:08 -0500 Received: from mx1.redhat.com ([209.132.183.28]:27835 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751629Ab1LPDfH (ORCPT ); Thu, 15 Dec 2011 22:35:07 -0500 Message-ID: <4EEABC4D.7070706@redhat.com> Date: Thu, 15 Dec 2011 22:34:37 -0500 From: Rik van Riel User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:8.0) Gecko/20111115 Thunderbird/8.0 MIME-Version: 1.0 To: Mel Gorman CC: Andrew Morton , Andrea Arcangeli , Minchan Kim , Dave Jones , Jan Kara , Andy Isaacson , Johannes Weiner , Nai Xia , Linux-MM , LKML Subject: Re: [PATCH 06/11] mm: compaction: make isolate_lru_page() filter-aware again References: <1323877293-15401-1-git-send-email-mgorman@suse.de> <1323877293-15401-7-git-send-email-mgorman@suse.de> In-Reply-To: <1323877293-15401-7-git-send-email-mgorman@suse.de> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 12/14/2011 10:41 AM, Mel Gorman wrote: > Commit [39deaf85: mm: compaction: make isolate_lru_page() filter-aware] > noted that compaction does not migrate dirty or writeback pages and > that is was meaningless to pick the page and re-add it to the LRU list. > This had to be partially reverted because some dirty pages can be > migrated by compaction without blocking. > > This patch updates "mm: compaction: make isolate_lru_page" by skipping > over pages that migration has no possibility of migrating to minimise > LRU disruption. > > Signed-off-by: Mel Gorman Reviewed-by: Rik van Riel -- All rights reversed