Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751822AbWIZAIV (ORCPT ); Mon, 25 Sep 2006 20:08:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751827AbWIZAIU (ORCPT ); Mon, 25 Sep 2006 20:08:20 -0400 Received: from mail1.webmaster.com ([216.152.64.169]:21765 "EHLO mail1.webmaster.com") by vger.kernel.org with ESMTP id S1751822AbWIZAIT convert rfc822-to-8bit (ORCPT ); Mon, 25 Sep 2006 20:08:19 -0400 From: "David Schwartz" To: Subject: RE: Swap on Fuse deadlocks? Date: Mon, 25 Sep 2006 17:08:13 -0700 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8BIT X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.6604 (9.0.2911.0) Importance: Normal In-Reply-To: <45184D88.1010203@comcast.net> X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2962 X-Authenticated-Sender: joelkatz@webmaster.com X-Spam-Processed: mail1.webmaster.com, Mon, 25 Sep 2006 17:11:11 -0800 (not processed: message from trusted or authenticated source) X-MDRemoteIP: 206.171.168.138 X-Return-Path: davids@webmaster.com X-MDaemon-Deliver-To: linux-kernel@vger.kernel.org Reply-To: davids@webmaster.com X-MDAV-Processed: mail1.webmaster.com, Mon, 25 Sep 2006 17:11:15 -0800 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 801 Lines: 16 > Swap on disk I don't get. A little slow perhaps due to the LZO or zlib > compression in the middle (lzolayer lets you pick either); but a total > freeze? What's wrong here, is lzo_fs data getting swapped out and then > not swapped in because it's needed to decompress itself? The filesystem would have to make sure to lock in memory itself and any code it might need. Obviously, if the filesystem code itself gets swapped out, you cannot swap it back in again ever. Any user-space filesystem that expects to handle swap had better call 'mlock'. DS - 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/