From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx188.postini.com [74.125.245.188]) by kanga.kvack.org (Postfix) with SMTP id 00A7F6B002B for ; Wed, 17 Oct 2012 14:14:25 -0400 (EDT) Date: Wed, 17 Oct 2012 14:14:13 -0400 From: Dave Jones Subject: Re: [patch for-3.7] mm, mempolicy: fix printing stack contents in numa_maps Message-ID: <20121017181413.GA16805@redhat.com> References: <20121008150949.GA15130@redhat.com> <20121017040515.GA13505@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org List-ID: To: David Rientjes Cc: Andrew Morton , Linus Torvalds , KOSAKI Motohiro , bhutchings@solarflare.com, Konstantin Khlebnikov , Naoya Horiguchi , Hugh Dickins , KAMEZAWA Hiroyuki , linux-kernel@vger.kernel.org, linux-mm@kvack.org On Tue, Oct 16, 2012 at 10:24:32PM -0700, David Rientjes wrote: > On Wed, 17 Oct 2012, Dave Jones wrote: > > > BUG: sleeping function called from invalid context at kernel/mutex.c:269 > > Hmm, looks like we need to change the refcount semantics entirely. We'll > need to make get_vma_policy() always take a reference and then drop it > accordingly. This work sif get_vma_policy() can grab a reference while > holding task_lock() for the task policy fallback case. > > Comments on this approach? Seems to be surviving my testing at least.. Dave -- 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