From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr0-f199.google.com (mail-wr0-f199.google.com [209.85.128.199]) by kanga.kvack.org (Postfix) with ESMTP id 4A59B6B025F for ; Wed, 6 Dec 2017 19:32:30 -0500 (EST) Received: by mail-wr0-f199.google.com with SMTP id h12so2984008wre.12 for ; Wed, 06 Dec 2017 16:32:30 -0800 (PST) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org. [140.211.169.12]) by mx.google.com with ESMTPS id b196si2746548wmf.157.2017.12.06.16.32.28 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 06 Dec 2017 16:32:28 -0800 (PST) Date: Wed, 6 Dec 2017 16:32:26 -0800 From: Andrew Morton Subject: Re: possible deadlock in generic_file_write_iter (2) Message-Id: <20171206163226.5f46132aeea6fbcc44fc8421@linux-foundation.org> In-Reply-To: <20171206050547.GA5260@X58A-UD3R> References: <94eb2c0d010a4e7897055f70535b@google.com> <20171204083339.GF8365@quack2.suse.cz> <80ba65b6-d0c2-2d3a-779b-a134af8a9054@lge.com> <20171206050547.GA5260@X58A-UD3R> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Byungchul Park Cc: Dmitry Vyukov , Jan Kara , syzbot , Johannes Weiner , jlayton@redhat.com, LKML , Linux-MM , Mel Gorman , npiggin@gmail.com, rgoldwyn@suse.com, syzkaller-bugs@googlegroups.com, Peter Zijlstra , kernel-team@lge.com On Wed, 6 Dec 2017 14:05:47 +0900 Byungchul Park wrote: > > What is cross-release? Is it something new? Should we always enable > > crossrelease_fullstack during testing? > > Hello Dmitry, > > Yes, it's new one making lockdep track wait_for_completion() as well. > > And we should enable crossrelease_fullstack if you don't care system > slowdown but testing. We should update Documentation/process/submit-checklist.rst section 12. But that list doesn't even mention CONFIG_LOCKDEP so a bit of maintenance work will be needed there.. -- 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