From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763582AbYB1Tpt (ORCPT ); Thu, 28 Feb 2008 14:45:49 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1763335AbYB1TmJ (ORCPT ); Thu, 28 Feb 2008 14:42:09 -0500 Received: from mx1.redhat.com ([66.187.233.31]:45292 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761530AbYB1Tl6 (ORCPT ); Thu, 28 Feb 2008 14:41:58 -0500 Message-Id: <20080228192928.790504650@redhat.com> References: <20080228192908.126720629@redhat.com> User-Agent: quilt/0.46-1 Date: Thu, 28 Feb 2008 14:29:18 -0500 From: Rik van Riel To: linux-kernel@vger.kernel.org Cc: KOSAKI Motohiro , Lee Schermerhorn , linux-mm@kvack.org Subject: [patch 10/21] add newly swapped in pages to the inactive list Content-Disposition: inline; filename=rvr-swapin-inactive.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Swapin_readahead can read in a lot of data that the processes in memory never need. Adding swap cache pages to the inactive list prevents them from putting too much pressure on the working set. This has the potential to help the programs that are already in memory, but it could also be a disadvantage to processes that are trying to get swapped in. In short, this patch needs testing. Signed-off-by: Rik van Riel Index: linux-2.6.25-rc2-mm1/mm/swap_state.c =================================================================== --- linux-2.6.25-rc2-mm1.orig/mm/swap_state.c 2008-02-28 00:27:06.000000000 -0500 +++ linux-2.6.25-rc2-mm1/mm/swap_state.c 2008-02-28 00:29:51.000000000 -0500 @@ -300,7 +300,7 @@ struct page *read_swap_cache_async(swp_e /* * Initiate read into locked page and return. */ - lru_cache_add_active_anon(new_page); + lru_cache_add_anon(new_page); swap_readpage(NULL, new_page); return new_page; } -- All Rights Reversed