From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail138.messagelabs.com (mail138.messagelabs.com [216.82.249.35]) by kanga.kvack.org (Postfix) with ESMTP id AEB4F6B004F for ; Tue, 23 Jun 2009 18:15:29 -0400 (EDT) Received: from d01relay04.pok.ibm.com (d01relay04.pok.ibm.com [9.56.227.236]) by e5.ny.us.ibm.com (8.13.1/8.13.1) with ESMTP id n5NM9YIX009269 for ; Tue, 23 Jun 2009 18:09:34 -0400 Received: from d01av01.pok.ibm.com (d01av01.pok.ibm.com [9.56.224.215]) by d01relay04.pok.ibm.com (8.13.8/8.13.8/NCO v9.2) with ESMTP id n5NMFtEH251664 for ; Tue, 23 Jun 2009 18:15:55 -0400 Received: from d01av01.pok.ibm.com (loopback [127.0.0.1]) by d01av01.pok.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id n5NMFtQS017407 for ; Tue, 23 Jun 2009 18:15:55 -0400 Subject: Re: [PATCH] Hugepages should be accounted as unevictable pages. From: Dave Hansen In-Reply-To: <1245793331.24110.33.camel@alok-dev1> References: <20090623093459.2204.A69D9226@jp.fujitsu.com> <1245732411.18339.6.camel@alok-dev1> <20090623135017.220D.A69D9226@jp.fujitsu.com> <20090623141147.8f2cef18.kamezawa.hiroyu@jp.fujitsu.com> <1245736441.18339.21.camel@alok-dev1> <4A41481D.1060607@redhat.com> <1245793331.24110.33.camel@alok-dev1> Content-Type: text/plain Date: Tue, 23 Jun 2009 15:15:52 -0700 Message-Id: <1245795352.17685.31312.camel@nimitz> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org To: akataria@vmware.com Cc: Rik van Riel , KAMEZAWA Hiroyuki , KOSAKI Motohiro , LKML , Lee Schermerhorn , Mel Gorman , "linux-mm@kvack.org" List-ID: On Tue, 2009-06-23 at 14:42 -0700, Alok Kataria wrote: > One thing that i forgot to mention earlier is that, I just need a way to > provide a hint about the total locked memory on the system and it > doesn't need to be the exact number at that point in time. > > Lee, due to this reason lazy culling of unevictable pages is fine too. > > Hugepages, similar to mlocked pages, are special because the user could > specify how much memory it wants to reserve for this purpose. So that > needs to be taken into consideration i.e it cannot be calculated in some > way. Could you just teach the thing to which you are hinting that it also needs to go look in sysfs for huge page counts? Or, is there a requirement that it come out of a single meminfo field? -- Dave -- 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