From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail137.messagelabs.com (mail137.messagelabs.com [216.82.249.19]) by kanga.kvack.org (Postfix) with ESMTP id DF5EC6B003D for ; Tue, 10 Mar 2009 06:45:56 -0400 (EDT) Date: Tue, 10 Mar 2009 11:45:52 +0100 From: Nick Piggin Subject: Re: possible bug in find_get_pages Message-ID: <20090310104552.GA4594@wotan.suse.de> References: <20090306192625.GA3267@linux.intel.com> <20090307084732.b01bcfee.minchan.kim@barrios-desktop> <20090309164316.GB31140@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090309164316.GB31140@linux.intel.com> Sender: owner-linux-mm@kvack.org To: mark gross Cc: Minchan Kim , linux-mm@kvack.org, Christoph Lameter List-ID: On Mon, Mar 09, 2009 at 09:43:16AM -0700, mark gross wrote: > On Sat, Mar 07, 2009 at 08:47:32AM +0900, Minchan Kim wrote: > > Nick already found and solved this problem . > > It can help you. > > > > http://patchwork.kernel.org/patch/860/ > > > > Wow, this reads just like the problem we are seeing. I'll try the > patch and let the test run for a few days! > > We've even see it come out of the live lock once in a while as well. I > was thinking cache coherency HW issue until this :) > > I'll send an update after running the test. Note that after some discussion, the accepted fix looks a bit different (and might potentially fix another problem if the compiler gets very smart, although gcc doesn't seem to). Git commit e8c82c2e23e3527e0c9dc195e432c16784d270fa -- 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