From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail203.messagelabs.com (mail203.messagelabs.com [216.82.254.243]) by kanga.kvack.org (Postfix) with SMTP id 1E32E6B0055 for ; Tue, 16 Jun 2009 05:40:05 -0400 (EDT) Received: from m6.gw.fujitsu.co.jp ([10.0.50.76]) by fgwmail5.fujitsu.co.jp (Fujitsu Gateway) with ESMTP id n5G9fIhA029372 for (envelope-from kosaki.motohiro@jp.fujitsu.com); Tue, 16 Jun 2009 18:41:18 +0900 Received: from smail (m6 [127.0.0.1]) by outgoing.m6.gw.fujitsu.co.jp (Postfix) with ESMTP id 2E73745DE52 for ; Tue, 16 Jun 2009 18:41:18 +0900 (JST) Received: from s6.gw.fujitsu.co.jp (s6.gw.fujitsu.co.jp [10.0.50.96]) by m6.gw.fujitsu.co.jp (Postfix) with ESMTP id E3A0145DE56 for ; Tue, 16 Jun 2009 18:41:17 +0900 (JST) Received: from s6.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s6.gw.fujitsu.co.jp (Postfix) with ESMTP id C05CE1DB8040 for ; Tue, 16 Jun 2009 18:41:17 +0900 (JST) Received: from ml14.s.css.fujitsu.com (ml14.s.css.fujitsu.com [10.249.87.104]) by s6.gw.fujitsu.co.jp (Postfix) with ESMTP id 5A4461DB8044 for ; Tue, 16 Jun 2009 18:41:17 +0900 (JST) From: KOSAKI Motohiro Subject: Re: [PATCH 2/2] mm: Fix documentation of min_unmapped_ratio In-Reply-To: <1245064482-19245-3-git-send-email-mel@csn.ul.ie> References: <1245064482-19245-1-git-send-email-mel@csn.ul.ie> <1245064482-19245-3-git-send-email-mel@csn.ul.ie> Message-Id: <20090616184100.99AC.A69D9226@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Date: Tue, 16 Jun 2009 18:41:16 +0900 (JST) Sender: owner-linux-mm@kvack.org To: Mel Gorman Cc: kosaki.motohiro@jp.fujitsu.com, Andrew Morton , Rik van Riel , Christoph Lameter , Wu Fengguang , linuxram@us.ibm.com, linux-mm , LKML List-ID: > -A percentage of the total pages in each zone. Zone reclaim will only > -occur if more than this percentage of pages are file backed and unmapped. > -This is to insure that a minimal amount of local pages is still available for > -file I/O even if the node is overallocated. > +This is a percentage of the total pages in each zone. Zone reclaim will > +only occur if more than this percentage of pages are in a state that > +zone_reclaim_mode allows to be reclaimed. > + > +If zone_reclaim_mode has the value 4 OR'd, then the percentage is compared > +against all file-backed unmapped pages including swapcache pages and tmpfs > +files. Otherwise, only unmapped pages backed by normal files but not tmpfs > +files and similar are considered. > > The default is 1 percent. looks good. -- 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