Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757354Ab1FFN1W (ORCPT ); Mon, 6 Jun 2011 09:27:22 -0400 Received: from mail-px0-f179.google.com ([209.85.212.179]:48292 "EHLO mail-px0-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752032Ab1FFN1U (ORCPT ); Mon, 6 Jun 2011 09:27:20 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=date:from:to:cc:subject:message-id:references:mime-version :content-type:content-disposition:in-reply-to:user-agent; b=eMmJ1+1wJZxRGfX/76Ymp5/XK/W/wn5muKJAHow9XVAvAejdZkntwPscvnej+8n6Zl VHwIJAdIkPRDDJGWMQLWe2yea7CbcKxAsV98kixskyNwZXKQShV6rkMDozfunndZs/l9 9iSU8rrCWtbkrtA3jimMpkJvzUk9gAJl4+/kM= Date: Mon, 6 Jun 2011 22:27:10 +0900 From: Minchan Kim To: Andrea Arcangeli Cc: Mel Gorman , akpm@linux-foundation.org, Ury Stankevich , KOSAKI Motohiro , linux-kernel@vger.kernel.org, linux-mm@kvack.org, stable@kernel.org Subject: Re: [PATCH] mm: compaction: Abort compaction if too many pages are isolated and caller is asynchronous Message-ID: <20110606132709.GB1686@barrios-laptop> References: <20110601233036.GZ19505@random.random> <20110602010352.GD7306@suse.de> <20110602132954.GC19505@random.random> <20110602145019.GG7306@suse.de> <20110602153754.GF19505@random.random> <20110603020920.GA26753@suse.de> <20110603144941.GI7306@suse.de> <20110604065853.GA4114@barrios-laptop> <20110606104345.GE5247@suse.de> <20110606124025.GB12887@random.random> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20110606124025.GB12887@random.random> User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 793 Lines: 20 On Mon, Jun 06, 2011 at 02:40:25PM +0200, Andrea Arcangeli wrote: > On Mon, Jun 06, 2011 at 11:43:45AM +0100, Mel Gorman wrote: > > Maybe not full, but it has more PageReserved pages than anywhere else > > and few MIGRATE_MOVABLE blocks. MIGRATE_MOVABLE gets skipped during > > async compaction we could easily reach the end of the DMA zone quickly. > > Debug data has nr_isolated_file in dma zone 1 and nr_isolated_file in > normal zone being -1. It's exactly match with Mel's case. Thanks for the proving, Andrea. -- Kind regards Minchan Kim -- 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/