From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 7 May 2008 17:00:15 +0200 From: Andrea Arcangeli Subject: Re: [PATCH 01 of 12] Core of mmu notifiers Message-ID: <20080507150014.GI8362@duo.random> References: <20080424153943.GJ24536@duo.random> <20080424174145.GM24536@duo.random> <20080426131734.GB19717@sgi.com> <20080427122727.GO9514@duo.random> <20080429001052.GA8315@duo.random> <20080429153052.GE8315@duo.random> <20080429155030.GB28944@sgi.com> <20080429160340.GG8315@duo.random> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20080429160340.GG8315@duo.random> Sender: owner-linux-mm@kvack.org Return-Path: To: Robin Holt Cc: Christoph Lameter , Jack Steiner , Nick Piggin , Peter Zijlstra , kvm-devel@lists.sourceforge.net, Kanoj Sarcar , Roland Dreier , Steve Wise , linux-kernel@vger.kernel.org, Avi Kivity , linux-mm@kvack.org, general@lists.openfabrics.org, Hugh Dickins , akpm@linux-foundation.org, Rusty Russell List-ID: On Tue, Apr 29, 2008 at 06:03:40PM +0200, Andrea Arcangeli wrote: > Christoph if you've interest in evolving anon-vma-sem and i_mmap_sem > yourself in this direction, you're very welcome to go ahead while I In case you didn't notice this already, for a further explanation of why semaphores runs slower for small critical sections and why the conversion from spinlock to rwsem should happen under a config option, see the "AIM7 40% regression with 2.6.26-rc1" thread. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org