On Thu, Aug 19, 2021 at 12:15:08PM -0700, Linus Torvalds wrote: > On Thu, Aug 19, 2021 at 11:39 AM Jeff Layton <jlayton@xxxxxxxxxx> 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? > As far as I know, Android never uses mandatory file locking. While CONFIG_MANDATORY_LOCKING=y is typically set (as it's "default y" upstream), I can't find anywhere in the Android source tree that uses the "mand" mount option, let alone anything actually using mandatory locks. (I'm assuming that Documentation/filesystems/mandatory-locking.rst is up-to-date regarding what userspace actually has to do to use it.) - Eric
