From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: [RFC] Notifier for Externally Mapped Memory (EMM) From: Peter Zijlstra In-Reply-To: References: <20080221144023.GC9427@v2.random> <20080221161028.GA14220@sgi.com> <20080227192610.GF28483@v2.random> <20080302155457.GK8091@v2.random> <20080303213707.GA8091@v2.random> <20080303220502.GA5301@v2.random> <47CC9B57.5050402@qumranet.com> <20080304133020.GC5301@v2.random> <20080304222030.GB8951@v2.random> Content-Type: text/plain Date: Tue, 04 Mar 2008 23:42:09 +0100 Message-Id: <1204670529.6241.52.camel@lappy> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Christoph Lameter Cc: Andrea Arcangeli , Jack Steiner , Nick Piggin , akpm@linux-foundation.org, Robin Holt , Avi Kivity , kvm-devel@lists.sourceforge.net, general@lists.openfabrics.org, Steve Wise , Roland Dreier , Kanoj Sarcar , linux-kernel@vger.kernel.org, linux-mm@kvack.org, daniel.blueman@quadrics.com List-ID: On Tue, 2008-03-04 at 14:35 -0800, Christoph Lameter wrote: > RCU means that the callbacks occur in an atomic context. Not really, if it requires moving the VM locks to sleepable locks under a .config option, I think its also fair to require PREEMPT_RCU. OTOH, if you want to unconditionally move the VM locks to sleepable locks you have a point. -- 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