Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757618AbZGGPiz (ORCPT ); Tue, 7 Jul 2009 11:38:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757530AbZGGPir (ORCPT ); Tue, 7 Jul 2009 11:38:47 -0400 Received: from terminus.zytor.com ([198.137.202.10]:51409 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756354AbZGGPiq (ORCPT ); Tue, 7 Jul 2009 11:38:46 -0400 Message-ID: <4A536BCC.6030504@zytor.com> Date: Tue, 07 Jul 2009 08:37:48 -0700 From: "H. Peter Anvin" User-Agent: Thunderbird 2.0.0.14 (X11/20080501) MIME-Version: 1.0 To: Alexey Vlasov CC: Ray Lee , Andrew Morton , linux-kernel@vger.kernel.org Subject: Re: devpts mounts too slowly References: <20090603142801.GC21646@beaver.vrungel.ru> <4A26EB18.6060907@zytor.com> <20090609161945.811cc01f.akpm@linux-foundation.org> <2c0942db0906091630l1cc79647h8689e9e929ed1bba@mail.gmail.com> <4A2EF833.6080300@zytor.com> <20090706195252.GA7484@beaver.vrungel.ru> <4A526AEF.3070407@zytor.com> <20090707083853.GC7484@beaver.vrungel.ru> In-Reply-To: <20090707083853.GC7484@beaver.vrungel.ru> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 724 Lines: 22 Alexey Vlasov wrote: > On Mon, Jul 06, 2009 at 02:21:51PM -0700, H. Peter Anvin wrote: >> Do you have /selinux mounted on one of them? > > I don't use SELinux anywhere. > That's, apparently, the problem: some version of the mount binary will search all of /proc/mounts for selinux if it isn't mounted on /selinux. This is a serious performance bug, obviously. -hpa -- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf. -- 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/