On Mon, Mar 29, 2021 at 11:00:39AM +0200, Ondrej Mosnacek wrote: > After taking a closer look, it seems this won't actually work... The > problem is that since btrfs still uses the legacy mount API, it has no > way to get to fs_context in btrfs_mount() and thus both of your > suggestions aren't really workable (again, without converting btrfs at > least partially to the new API)... .. and that conversion is long overdue anyway ..