From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail191.messagelabs.com (mail191.messagelabs.com [216.82.242.19]) by kanga.kvack.org (Postfix) with SMTP id 09C6C6B004D for ; Tue, 16 Mar 2010 22:43:00 -0400 (EDT) Received: from m4.gw.fujitsu.co.jp ([10.0.50.74]) by fgwmail6.fujitsu.co.jp (Fujitsu Gateway) with ESMTP id o2H2gv3v024682 for (envelope-from kosaki.motohiro@jp.fujitsu.com); Wed, 17 Mar 2010 11:42:58 +0900 Received: from smail (m4 [127.0.0.1]) by outgoing.m4.gw.fujitsu.co.jp (Postfix) with ESMTP id B085B45DE6F for ; Wed, 17 Mar 2010 11:42:57 +0900 (JST) Received: from s4.gw.fujitsu.co.jp (s4.gw.fujitsu.co.jp [10.0.50.94]) by m4.gw.fujitsu.co.jp (Postfix) with ESMTP id 8EC9845DE6E for ; Wed, 17 Mar 2010 11:42:57 +0900 (JST) Received: from s4.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s4.gw.fujitsu.co.jp (Postfix) with ESMTP id 790D51DB803B for ; Wed, 17 Mar 2010 11:42:57 +0900 (JST) Received: from ml14.s.css.fujitsu.com (ml14.s.css.fujitsu.com [10.249.87.104]) by s4.gw.fujitsu.co.jp (Postfix) with ESMTP id 36D9D1DB8037 for ; Wed, 17 Mar 2010 11:42:54 +0900 (JST) From: KOSAKI Motohiro Subject: Re: [PATCH 05/11] Export unusable free space index via /proc/unusable_index In-Reply-To: <1268412087-13536-6-git-send-email-mel@csn.ul.ie> References: <1268412087-13536-1-git-send-email-mel@csn.ul.ie> <1268412087-13536-6-git-send-email-mel@csn.ul.ie> Message-Id: <20100317114126.4C97.A69D9226@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Date: Wed, 17 Mar 2010 11:42:53 +0900 (JST) Sender: owner-linux-mm@kvack.org To: Mel Gorman Cc: kosaki.motohiro@jp.fujitsu.com, Andrew Morton , Andrea Arcangeli , Christoph Lameter , Adam Litke , Avi Kivity , David Rientjes , Rik van Riel , linux-kernel@vger.kernel.org, linux-mm@kvack.org List-ID: > Unusable free space index is a measure of external fragmentation that > takes the allocation size into account. For the most part, the huge page > size will be the size of interest but not necessarily so it is exported > on a per-order and per-zone basis via /proc/unusable_index. > > The index is a value between 0 and 1. It can be expressed as a > percentage by multiplying by 100 as documented in > Documentation/filesystems/proc.txt. > > Signed-off-by: Mel Gorman > Reviewed-by: Minchan Kim > Acked-by: Rik van Riel thanks. Reviewed-by: KOSAKI Motohiro -- 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