Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754482Ab0FNSHs (ORCPT ); Mon, 14 Jun 2010 14:07:48 -0400 Received: from mx1.redhat.com ([209.132.183.28]:51837 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751220Ab0FNSHr (ORCPT ); Mon, 14 Jun 2010 14:07:47 -0400 Message-ID: <4C166F95.3030907@redhat.com> Date: Mon, 14 Jun 2010 14:06:13 -0400 From: Rik van Riel User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100430 Fedora/3.0.4-2.fc12 Lightning/1.0b2pre Thunderbird/3.0.4 MIME-Version: 1.0 To: Mel Gorman CC: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, Dave Chinner , Chris Mason , Nick Piggin , Johannes Weiner , Christoph Hellwig , KAMEZAWA Hiroyuki , Andrew Morton Subject: Re: [PATCH 06/12] vmscan: simplify shrink_inactive_list() References: <1276514273-27693-1-git-send-email-mel@csn.ul.ie> <1276514273-27693-7-git-send-email-mel@csn.ul.ie> In-Reply-To: <1276514273-27693-7-git-send-email-mel@csn.ul.ie> 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 Content-Length: 1432 Lines: 38 On 06/14/2010 07:17 AM, Mel Gorman wrote: > From: KOSAKI Motohiro > > Now, max_scan of shrink_inactive_list() is always passed less than > SWAP_CLUSTER_MAX. then, we can remove scanning pages loop in it. > This patch also help stack diet. > > detail > - remove "while (nr_scanned< max_scan)" loop > - remove nr_freed (now, we use nr_reclaimed directly) > - remove nr_scan (now, we use nr_scanned directly) > - rename max_scan to nr_to_scan > - pass nr_to_scan into isolate_pages() directly instead > using SWAP_CLUSTER_MAX > > Signed-off-by: KOSAKI Motohiro > Reviewed-by: Johannes Weiner Other than the weird whitespace below, Reviewed-by: Rik van Riel > + /* > + * If we are direct reclaiming for contiguous pages and we do > + * not reclaim everything in the list, try again and wait > + * for IO to complete. This will stall high-order allocations > + * but that should be acceptable to the caller > + */ > + if (nr_reclaimed< nr_taken&& !current_is_kswapd()&& sc->lumpy_reclaim_mode) { > + congestion_wait(BLK_RW_ASYNC, HZ/10); -- All rights reversed -- 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/