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 SMTP id 4C9526B01F2 for ; Wed, 18 Aug 2010 17:26:19 -0400 (EDT) Date: Thu, 19 Aug 2010 05:26:13 +0800 From: Wu Fengguang Subject: Re: [TESTCASE] Clean pages clogging the VM Message-ID: <20100818212613.GA7366@localhost> References: <20100809133000.GB6981@wil.cx> <20100817195001.GA18817@linux.intel.com> <20100818141308.GD1779@cmpxchg.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20100818141308.GD1779@cmpxchg.org> Sender: owner-linux-mm@kvack.org To: Johannes Weiner Cc: Matthew Wilcox , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Li Shaohua , Rik van Riel List-ID: > Mapped file pages get two rounds on the LRU list, so once the VM > starts scanning, it has to go through all of them twice and can only > reclaim them on the second encounter. This can be fixed gracefully based on Rik's refault-distance patch :) With the distance info we can safely drop the use-once mapped file pages. Thanks, Fengguang -- 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