Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755067AbZA2S0Y (ORCPT ); Thu, 29 Jan 2009 13:26:24 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751761AbZA2S0Q (ORCPT ); Thu, 29 Jan 2009 13:26:16 -0500 Received: from mx2.suse.de ([195.135.220.15]:49390 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751656AbZA2S0P (ORCPT ); Thu, 29 Jan 2009 13:26:15 -0500 Date: Thu, 29 Jan 2009 10:14:22 -0800 From: Greg KH To: mtk.manpages@gmail.com Cc: Andrew Morton , Davide Libenzi , Linux Kernel Mailing List , Linus Torvalds , Willy Tarreau , Bron Gondwana Subject: Re: [patch] drop epoll max_user_instances and rely only on max_user_watches Message-ID: <20090129181422.GA30935@suse.de> References: <20090129005716.6dd51929.akpm@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.16 (2007-06-09) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1526 Lines: 39 On Thu, Jan 29, 2009 at 11:03:37PM +1300, Michael Kerrisk wrote: > On Thu, Jan 29, 2009 at 9:57 PM, Andrew Morton > wrote: > > > >> Subject: [patch] drop epoll max_user_instances and rely only on max_user_watches > > > > nanonit: please prepare titles in the form "subsystem-id: > > what-i-did-to-it", so a suitable name here would be > > > > epoll: drop max_user_instances and rely only on max_user_watches > > > > On Wed, 28 Jan 2009 20:56:07 -0800 (PST) Davide Libenzi wrote: > > > >> Linus suggested to put limits where the money is, and max_user_watches > >> already does that w/out the need of max_user_instances. That has the > >> advantage to mitigate the potential DoS while allowing pretty generous > >> default behavior. > > [...] > > > I assume that because you based all this on all the other patches, you > > view it as 2.6.30 material? > > Since max_user_instances was added in 2.6.28, and this is an ABI > change, I suggest this should go into .29-rc, so that > max_user_instances spends as little time in the wild as possible. I agree. I'll backport the change to the .28 and .27 stable kernels as well, as we have complaints about the default values breaking people's machines. thanks, greg k-h -- 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/