Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933474Ab0BPWXJ (ORCPT ); Tue, 16 Feb 2010 17:23:09 -0500 Received: from mx1.redhat.com ([209.132.183.28]:58517 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933260Ab0BPWXF (ORCPT ); Tue, 16 Feb 2010 17:23:05 -0500 Message-ID: <4B7B1AA9.9040609@redhat.com> Date: Tue, 16 Feb 2010 17:22:33 -0500 From: Rik van Riel Organization: Red Hat, Inc User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.5) Gecko/20091209 Fedora/3.0-4.fc12 Lightning/1.0pre Thunderbird/3.0 MIME-Version: 1.0 To: Chris Friesen CC: Minchan Kim , KOSAKI Motohiro , Linux Kernel Mailing List , linux-mm@kvack.org, Balbir Singh Subject: Re: tracking memory usage/leak in "inactive" field in /proc/meminfo? References: <4B71927D.6030607@nortel.com> <20100210093140.12D9.A69D9226@jp.fujitsu.com> <4B72E74C.9040001@nortel.com> <28c262361002101645g3fd08cc7t6a72d27b1f94db62@mail.gmail.com> <4B74524D.8080804@nortel.com> <28c262361002111838q7db763feh851a9bea4fdd9096@mail.gmail.com> <4B7504D2.1040903@nortel.com> <4B796D31.7030006@nortel.com> <4B797D93.5090307@redhat.com> <4B7ACD4A.10101@nortel.com> <4B7AD207.20604@redhat.com> <4B7B0D75.50808@nortel.com> In-Reply-To: <4B7B0D75.50808@nortel.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 860 Lines: 27 On 02/16/2010 04:26 PM, Chris Friesen wrote: > For the backtrace scenario I posted it seems like it might actually be > release_pages(). There seems to be a plausible call chain: > > __ClearPageLRU > release_pages > free_pages_and_swap_cache > tlb_flush_mmu > tlb_remove_page > zap_pte_range > > Does that seem right? In this case, tlb_remove_page() is called right > after page_remove_rmap() which ultimately results in clearing the > PageAnon bit. That is right - and pinpoints the fault for the memory leak on some third party code that fails to release a refcount on memory pages. -- All rights reversed. -- 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/