From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Fri, 7 Mar 2008 12:03:42 -0800 (PST) From: Christoph Lameter Subject: Re: [PATCH] 4/4 i_mmap_lock spinlock2rwsem (#v9 was 1/4) In-Reply-To: <20080307155244.GF24114@v2.random> Message-ID: References: <20080303213707.GA8091@v2.random> <20080303220502.GA5301@v2.random> <47CC9B57.5050402@qumranet.com> <20080304133020.GC5301@v2.random> <20080304222030.GB8951@v2.random> <20080307151722.GD24114@v2.random> <20080307152328.GE24114@v2.random> <20080307155244.GF24114@v2.random> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Andrea Arcangeli Cc: Jack Steiner , Nick Piggin , akpm@linux-foundation.org, Robin Holt , Avi Kivity , kvm-devel@lists.sourceforge.net, Peter Zijlstra , 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 Fri, 7 Mar 2008, Andrea Arcangeli wrote: > I didn't look into this but it shows how it would be risky to make > this change in .25. It's a bit strange that the bugcheck triggers Yes this was never intended for .25. I think we need to split this into a copule of patches. One needs to get rid of the spinlock dropping, then one that deals with the read concurrency issues and finally one that converts the spinlock. Thanks for looking at it. -- 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