Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932531AbWHHKgV (ORCPT ); Tue, 8 Aug 2006 06:36:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932553AbWHHKgU (ORCPT ); Tue, 8 Aug 2006 06:36:20 -0400 Received: from cantor.suse.de ([195.135.220.2]:49127 "EHLO mx1.suse.de") by vger.kernel.org with ESMTP id S932531AbWHHKgU (ORCPT ); Tue, 8 Aug 2006 06:36:20 -0400 From: Andi Kleen To: Eric Dumazet Subject: Re: [RFC] NUMA futex hashing Date: Tue, 8 Aug 2006 12:36:15 +0200 User-Agent: KMail/1.9.3 Cc: Ravikiran G Thirumalai , "Shai Fultheim (Shai@scalex86.org)" , pravin b shelar , linux-kernel@vger.kernel.org References: <20060808070708.GA3931@localhost.localdomain> <200608081210.40334.dada1@cosmosbay.com> In-Reply-To: <200608081210.40334.dada1@cosmosbay.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200608081236.15823.ak@suse.de> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 549 Lines: 15 > > We may have special case for PRIVATE futexes (they dont need to be chained in > a global table, but a process private table) What do you mean with PRIVATE futex? Even if the futex mapping is only visible by a single MM mmap_sem is still needed to protect against other threads doing mmap. -Andi - 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/