From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx105.postini.com [74.125.245.105]) by kanga.kvack.org (Postfix) with SMTP id 5CE076B005D for ; Fri, 17 Aug 2012 03:56:35 -0400 (EDT) Date: Fri, 17 Aug 2012 17:56:13 +1000 From: Dave Chinner Subject: Re: [RFC PATCH 0/6] memcg: vfs isolation in memory cgroup Message-ID: <20120817075613.GE2776@devil.redhat.com> References: <1345150417-30856-1-git-send-email-yinghan@google.com> <502D61E1.8040704@redhat.com> <20120816234157.GB2776@devil.redhat.com> <502DD35F.7080009@parallels.com> <502DD9B7.5070604@parallels.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <502DD9B7.5070604@parallels.com> Sender: owner-linux-mm@kvack.org List-ID: To: Glauber Costa Cc: Ying Han , Rik van Riel , Michal Hocko , Johannes Weiner , Mel Gorman , KAMEZAWA Hiroyuki , Greg Thelen , Christoph Lameter , KOSAKI Motohiro , linux-mm@kvack.org On Fri, Aug 17, 2012 at 09:42:15AM +0400, Glauber Costa wrote: > On 08/17/2012 09:40 AM, Ying Han wrote: > >> > 2) There is no memcg associated with the object, and then we should not > >> > bother with that object at all. > > In the patch I have, all objects are associated with *a* memcg. For > > those objects are charged to root or reparented to root, > > they do get associated with root and further memory pressure on root ( > > global reclaim ) will be applied on those objects. > > > For the practical purposes of what Dave is concerned about, "no memcg" > equals "root memcg", right? It still holds we would expect globally > accessed dentries to belong to root/no-memcg, and per-group pressure > would not get to them. Exactly. Cheers, Dave. -- Dave Chinner dchinner@redhat.com -- 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