Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755985Ab1DYVhY (ORCPT ); Mon, 25 Apr 2011 17:37:24 -0400 Received: from smtp1.linux-foundation.org ([140.211.169.13]:49377 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751121Ab1DYVhW convert rfc822-to-8bit (ORCPT ); Mon, 25 Apr 2011 17:37:22 -0400 MIME-Version: 1.0 In-Reply-To: <20110425231016.34b4293e@neptune.home> References: <20110424235928.71af51e0@neptune.home> <20110425114429.266A.A69D9226@jp.fujitsu.com> <20110425111705.786ef0c5@neptune.home> <20110425180450.1ede0845@neptune.home> <20110425190032.7904c95d@neptune.home> <20110425203606.4e78246c@neptune.home> <20110425191607.GL2468@linux.vnet.ibm.com> <20110425231016.34b4293e@neptune.home> From: Linus Torvalds Date: Mon, 25 Apr 2011 14:30:02 -0700 Message-ID: Subject: Re: 2.6.39-rc4+: Kernel leaking memory during FS scanning, regression? To: =?ISO-8859-1?Q?Bruno_Pr=E9mont?= Cc: paulmck@linux.vnet.ibm.com, Mike Frysinger , KOSAKI Motohiro , linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, "Paul E. McKenney" , Pekka Enberg Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 949 Lines: 26 2011/4/25 Bruno Pr?mont : > > Between 1-slabinfo and 2-slabinfo some values increased (a lot) while a few > ones did decrease. Don't know which ones are RCU-affected and which ones are > not. It really sounds as if the tiny-rcu kthread somehow just stops handling callbacks. The ones that keep increasing do seem to be all rcu-free'd (but I didn't really check). The thing is shown as running: root 6 0.0 0.0 0 0 ? R 22:14 0:00 \_ [rcu_kthread] but nothing seems to happen and the CPU time hasn't increased at all. I dunno. Makes no sense to me, but yeah, I'm definitely blaming tiny-rcu. Paul, any ideas? Linus -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/