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[209.85.167.51]) by smtp.gmail.com with ESMTPSA id x14sm393925lfu.23.2021.08.19.12.23.14 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 19 Aug 2021 12:23:14 -0700 (PDT) Received: by mail-lf1-f51.google.com with SMTP id i9so15158214lfg.10 for ; Thu, 19 Aug 2021 12:23:14 -0700 (PDT) X-Received: by 2002:a19:4f1a:: with SMTP id d26mr11307760lfb.377.1629400524676; Thu, 19 Aug 2021 12:15:24 -0700 (PDT) MIME-Version: 1.0 References: <20210812084348.6521-1-david@redhat.com> <87o8a2d0wf.fsf@disp2133> <60db2e61-6b00-44fa-b718-e4361fcc238c@www.fastmail.com> <87lf56bllc.fsf@disp2133> <87eeay8pqx.fsf@disp2133> <5b0d7c1e73ca43ef9ce6665fec6c4d7e@AcuMS.aculab.com> <87h7ft2j68.fsf@disp2133> <87k0kkxbjn.fsf_-_@disp2133> <0c2af732e4e9f74c9d20b09fc4b6cbae40351085.camel@kernel.org> In-Reply-To: <0c2af732e4e9f74c9d20b09fc4b6cbae40351085.camel@kernel.org> From: Linus Torvalds Date: Thu, 19 Aug 2021 12:15:08 -0700 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: Removing Mandatory Locks To: Jeff Layton Cc: "Eric W. Biederman" , Matthew Wilcox , Andy Lutomirski , David Laight , David Hildenbrand , Linux Kernel Mailing List , Andrew Morton , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , Al Viro , Alexey Dobriyan , Steven Rostedt , "Peter Zijlstra (Intel)" , Arnaldo Carvalho de Melo , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Petr Mladek , Sergey Senozhatsky , Andy Shevchenko , Rasmus Villemoes , Kees Cook , Greg Ungerer , Geert Uytterhoeven , Mike Rapoport , Vlastimil Babka , Vincenzo Frascino , Chinwen Chang , Michel Lespinasse , Catalin Marinas , Huang Ying , Jann Horn , Feng Tang , Kevin Brodsky , Michael Ellerman , Shawn Anastasio , Steven Price , Nicholas Piggin , Christian Brauner , Jens Axboe , Gabriel Krisman Bertazi , Peter Xu , Suren Baghdasaryan , Shakeel Butt , Marco Elver , Daniel Jordan , Nicolas Viennot , Thomas Cedeno , Collin Fijalkovich , Michal Hocko , Miklos Szeredi , Chengguang Xu , =?UTF-8?Q?Christian_K=C3=B6nig?= , "linux-unionfs@vger.kernel.org" , Linux API , "the arch/x86 maintainers" , "" , Linux-MM , Florian Weimer , Michael Kerrisk Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: A07EB3000098 X-Stat-Signature: 9hoz69ctdddf7q5kk5ar3na54uip39g3 Authentication-Results: imf08.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=google header.b=Fi8Vc+JQ; dmarc=none; spf=pass (imf08.hostedemail.com: domain of torvalds@linuxfoundation.org designates 209.85.208.173 as permitted sender) smtp.mailfrom=torvalds@linuxfoundation.org X-HE-Tag: 1629400996-385764 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Thu, Aug 19, 2021 at 11:39 AM Jeff Layton wrote: > > I'm all for ripping it out too. It's an insane interface anyway. > > I've not heard a single complaint about this being turned off in > fedora/rhel or any other distro that has this disabled. I'd love to remove it, we could absolutely test it. The fact that several major distros have it disabled makes me think it's fine. But as always, it would be good to check Android. The desktop distros tend to have the same tools and programs, so if Fedora and RHEL haven't needed it for years, then it's likely stale in Debian too (despite being enabled). But Android tends to be very different. Does anybody know? Linus