Re: [PATCH 07/39] vfs: export vfs_ioctl() to modules

[Christoph Hellwig]

On Mon, Jun 11, 2018 at 09:19:01AM +0200, Miklos Szeredi wrote:
> We don't.  Obviously need to make sure to only ever do ioctl's in
> overlayfs that have a common definition across filesystems.  Not a lot
> of those, luckily...

Which are those?  If they are common and possibly called from kernel
code they should probably be made into methods instead.