From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wj0-f199.google.com (mail-wj0-f199.google.com [209.85.210.199]) by kanga.kvack.org (Postfix) with ESMTP id C9DA86B0267 for ; Sat, 7 Jan 2017 21:02:58 -0500 (EST) Received: by mail-wj0-f199.google.com with SMTP id xr1so131416970wjb.7 for ; Sat, 07 Jan 2017 18:02:58 -0800 (PST) Received: from gum.cmpxchg.org (gum.cmpxchg.org. [85.214.110.215]) by mx.google.com with ESMTPS id 80si6562940wmy.107.2017.01.07.18.02.56 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 07 Jan 2017 18:02:57 -0800 (PST) Date: Sat, 7 Jan 2017 21:02:52 -0500 From: Johannes Weiner Subject: Re: 4.10-rc2 list_lru_isolate list corruption Message-ID: <20170108020252.GB16312@cmpxchg.org> References: <20170106052056.jihy5denyxsnfuo5@codemonkey.org.uk> <20170106165941.GA19083@cmpxchg.org> <20170106195851.7pjpnn5w2bjasc7w@codemonkey.org.uk> <20170107011931.GA9698@cmpxchg.org> <20170108000737.q3ukpnils5iifulg@codemonkey.org.uk> 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: Hugh Dickins Cc: Dave Jones , Jan Kara , linux-mm@kvack.org On Sat, Jan 07, 2017 at 04:37:43PM -0800, Hugh Dickins wrote: > On Sat, 7 Jan 2017, Dave Jones wrote: > > On Fri, Jan 06, 2017 at 08:19:31PM -0500, Johannes Weiner wrote: > > > > > Argh, __radix_tree_delete_node() makes the flawed assumption that only > > > the immediate branch it's mucking with can collapse. But this warning > > > points out that a sibling branch can collapse too, including its leaf. > > > > > > Can you try if this patch fixes the problem? > > > > 18 hours and still running.. I think we can call it good. > > I'm inclined to agree, though I haven't had it running long enough > (on a load like when it hit me a few times before) to be sure yet myself. > I'd rather see the proposed fix go in than wait longer for me: > I've certainly seen nothing bad from it yet. Thank you both! -- 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