Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754793AbYLOJoA (ORCPT ); Mon, 15 Dec 2008 04:44:00 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752700AbYLOJnw (ORCPT ); Mon, 15 Dec 2008 04:43:52 -0500 Received: from minas.ics.muni.cz ([147.251.4.40]:46161 "EHLO minas.ics.muni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752288AbYLOJnv (ORCPT ); Mon, 15 Dec 2008 04:43:51 -0500 Date: Mon, 15 Dec 2008 10:44:09 +0100 From: Lukas Hejtmanek To: Wu Fengguang Cc: "linux-kernel@vger.kernel.org" Subject: Re: 2.6.28-rc8 big regression in VM Message-ID: <20081215094409.GA4422@ics.muni.cz> References: <20081212183810.GA4390@ics.muni.cz> <20081213012115.GA6250@localhost> <20081213095815.GA7143@ics.muni.cz> <20081215011645.GA9707@localhost> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-2 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20081215011645.GA9707@localhost> X-echelon: NSA, CIA, CI5, MI5, FBI, KGB, BIS, Plutonium, Bin Laden, bomb User-Agent: Mutt/1.5.18 (2008-05-17) X-Muni-Spam-TestIP: 147.251.3.109 X-Muni-Envelope-From: xhejtman@anubis.ics.muni.cz X-Muni-Virus-Test: Clean X-Greylist: Sender succeeded SMTP AUTH authentication, not delayed by milter-greylist-3.0 (minas.ics.muni.cz [147.251.4.35]); Mon, 15 Dec 2008 10:43:46 +0100 (CET) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 783 Lines: 24 On Mon, Dec 15, 2008 at 09:16:45AM +0800, Wu Fengguang wrote: > Lukas, could you apply the attached patch, recompile and do > > modprobe filecache > free; cp /proc/filecache /tmp/a; > echo 3 > /proc/sys/vm/drop_caches > free; cp /proc/filecache /tmp/b; > > and send me the outputs a and b? unfortunately, it causes an oops (0000 [#1] SMP) in d_path + 0x31/0x110, code 48 85 c0 74 2f <48> 8b 40 30 48 rax = 0x100000001 (it does not save the oops into any log, thus I only wrote down possibly most important clues) -- Luk?? Hejtm?nek -- 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/