From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx206.postini.com [74.125.245.206]) by kanga.kvack.org (Postfix) with SMTP id A7F286B005A for ; Thu, 12 Jan 2012 03:37:42 -0500 (EST) Message-ID: <4F0E9C23.5050706@freescale.com> Date: Thu, 12 Jan 2012 16:38:59 +0800 From: Huang Shijie MIME-Version: 1.0 Subject: Re: [PATCH v2] mm/compaction : do optimazition when the migration scanner gets no page References: <1326347222-9980-1-git-send-email-b32955@freescale.com> <20120112080311.GA30634@barrios-desktop.redhat.com> <4F0E991C.7010009@freescale.com> <20120112083246.GC30634@barrios-desktop.redhat.com> In-Reply-To: <20120112083246.GC30634@barrios-desktop.redhat.com> Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Minchan Kim Cc: akpm@linux-foundation.org, mgorman@suse.de, linux-mm@kvack.org Hi, > It depends on how we handle COMPACTBLOCKS. > I think COMPACTBLOCK mean "trial" of compaction so although we can't isolate any page at all, we have to > accout it with "trial of compaction". > And in your patch, although nr_migrate is zero, you account it, too. > And we have been accounted it until now. ok, Wait for Mel Gorman for the FINAL explanation. BR Huang Shijie -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org