From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-it0-f72.google.com (mail-it0-f72.google.com [209.85.214.72]) by kanga.kvack.org (Postfix) with ESMTP id A64326B0292 for ; Tue, 7 Nov 2017 03:31:52 -0500 (EST) Received: by mail-it0-f72.google.com with SMTP id g128so1387347itb.5 for ; Tue, 07 Nov 2017 00:31:52 -0800 (PST) Received: from mail-sor-f41.google.com (mail-sor-f41.google.com. [209.85.220.41]) by mx.google.com with SMTPS id g30sor360184iod.117.2017.11.07.00.31.51 for (Google Transport Security); Tue, 07 Nov 2017 00:31:51 -0800 (PST) MIME-Version: 1.0 In-Reply-To: <8352ad42-8437-4e25-29f4-c3b93c6eed18@lge.com> References: <94eb2c05f6a018dc21055d39c05b@google.com> <20171106032941.GR21978@ZenIV.linux.org.uk> <20171106131544.GB4359@quack2.suse.cz> <20171106133304.GS21978@ZenIV.linux.org.uk> <20171106160107.GA20227@worktop.programming.kicks-ass.net> <20171107005442.GA1405@X58A-UD3R> <20171107081143.GD3326@worktop> <8352ad42-8437-4e25-29f4-c3b93c6eed18@lge.com> From: Dmitry Vyukov Date: Tue, 7 Nov 2017 09:31:30 +0100 Message-ID: Subject: Re: possible deadlock in generic_file_write_iter Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Sender: owner-linux-mm@kvack.org List-ID: To: Byungchul Park Cc: Peter Zijlstra , Al Viro , Jan Kara , syzbot , Andrew Morton , Johannes Weiner , jlayton@redhat.com, LKML , linux-mm@kvack.org, npiggin@gmail.com, rgoldwyn@suse.com, ross.zwisler@linux.intel.com, syzkaller-bugs@googlegroups.com, Ingo Molnar , kernel-team@lge.com On Tue, Nov 7, 2017 at 9:30 AM, Byungchul Park wro= te: > 11/7/2017 5:11 PM=EC=97=90 Peter Zijlstra =EC=9D=B4(=EA=B0=80) =EC=93=B4 = =EA=B8=80: > >> On Tue, Nov 07, 2017 at 09:54:42AM +0900, Byungchul Park wrote: >>>> >>>> The best I could come up with is something like the below; its not >>>> at all pretty and I could see people objecting; least of all myself fo= r >>>> the __complete() thing, but I ran out of creative naming juice. >>> >>> >>> Patches assigning a lock_class per gendisk were already applied in tip. >>> I believe that solves this. >>> >>> e319e1fbd9d42420ab6eec0bfd75eb9ad7ca63b1 >>> block, locking/lockdep: Assign a lock_class per gendisk used for >>> wait_for_completion() >>> >>> I think the following proposal makes kernel too hacky. >> >> >> Ah, I tough this was with those included... > > > Please CC me for issues wrt. crossrelease. Hi Byungchul, Whom are you asking? And what is crossrelease? -- 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