Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262041AbUCIQMU (ORCPT ); Tue, 9 Mar 2004 11:12:20 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262035AbUCIQMU (ORCPT ); Tue, 9 Mar 2004 11:12:20 -0500 Received: from mx2.elte.hu ([157.181.151.9]:21188 "EHLO mx2.elte.hu") by vger.kernel.org with ESMTP id S262041AbUCIQJh (ORCPT ); Tue, 9 Mar 2004 11:09:37 -0500 Date: Tue, 9 Mar 2004 17:10:51 +0100 From: Ingo Molnar To: Andrea Arcangeli Cc: Andrew Morton , torvalds@osdl.org, linux-kernel@vger.kernel.org Subject: Re: objrmap-core-1 (rmap removal for file mappings to avoid 4:4 in <=16G machines) Message-ID: <20040309161051.GA11046@elte.hu> References: <20040308132305.3c35e90a.akpm@osdl.org> <20040308230247.GC12612@dualathlon.random> <20040308152126.54f4f681.akpm@osdl.org> <20040308234014.GG12612@dualathlon.random> <20040309083103.GB8021@elte.hu> <20040309090326.GA10039@elte.hu> <20040309145130.GC8193@dualathlon.random> <20040309150942.GA8224@elte.hu> <20040309152438.GE8193@dualathlon.random> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20040309152438.GE8193@dualathlon.random> User-Agent: Mutt/1.4.1i X-ELTE-SpamVersion: MailScanner-4.26.8-itk2 SpamAssassin 2.63 ClamAV 0.65 X-ELTE-VirusStatus: clean X-ELTE-SpamCheck: no X-ELTE-SpamCheck-Details: score=-4.9, required 5.9, autolearn=not spam, BAYES_00 -4.90 X-ELTE-SpamLevel: X-ELTE-SpamScore: -4 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 736 Lines: 19 * Andrea Arcangeli wrote: > > could you just try test-mmap2.c on such a box, and hit swap? > Unless it crashes the machine I don't care, it's totally wrong in my > opinion to hurt everything useful to save cpu while running an > exploit. there are easier ways to waste cpu (rewrite the exploit with > truncate please!!!) i'm not sure i follow. "truncate being slow" is not the same order of magnitude of a problem as "the VM being incapable of getting work done". Ingo - 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/