From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail144.messagelabs.com (mail144.messagelabs.com [216.82.254.51]) by kanga.kvack.org (Postfix) with ESMTP id AAE3F6006B4 for ; Mon, 19 Jul 2010 18:27:07 -0400 (EDT) Date: Tue, 20 Jul 2010 00:26:50 +0200 From: Johannes Weiner Subject: Re: [PATCH 8/8] vmscan: Kick flusher threads to clean pages when reclaim is encountering dirty pages Message-ID: <20100719222650.GB16031@cmpxchg.org> References: <1279545090-19169-1-git-send-email-mel@csn.ul.ie> <1279545090-19169-9-git-send-email-mel@csn.ul.ie> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1279545090-19169-9-git-send-email-mel@csn.ul.ie> Sender: owner-linux-mm@kvack.org To: Mel Gorman Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, Dave Chinner , Chris Mason , Nick Piggin , Rik van Riel , Christoph Hellwig , Wu Fengguang , KAMEZAWA Hiroyuki , KOSAKI Motohiro , Andrew Morton , Andrea Arcangeli List-ID: On Mon, Jul 19, 2010 at 02:11:30PM +0100, Mel Gorman wrote: > @@ -933,13 +934,16 @@ keep_dirty: > VM_BUG_ON(PageLRU(page) || PageUnevictable(page)); > } > > + /* > + * If reclaim is encountering dirty pages, it may be because > + * dirty pages are reaching the end of the LRU even though > + * the dirty_ratio may be satisified. In this case, wake > + * flusher threads to pro-actively clean some pages > + */ > + wakeup_flusher_threads(laptop_mode ? 0 : nr_dirty + nr_dirty / 2); An argument of 0 means 'every dirty page in the system', I assume this is not what you wanted, right? Something like this? if (nr_dirty && !laptop_mode) wakeup_flusher_threads(nr_dirty + nr_dirty / 2); -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org