Alan Jenkins <alan.christopher.jenkins@xxxxxxxxx> wrote: > I can see that this covers copy_mnt_ns(). It should also cover what will > happen in future, if you pass an OPEN_TREE_CLONE fd to a process with a > different mnt_ns and mnt_ns->user_ns, and that process mounts the fd using > move_mount(). However, I can't work out how this covers mount propagation > across namespaces. > > The comment "Notice when we are propagating across user namespaces" is moved > to attach_recursive_mnt(). I can't find any call to attach_recursive_mount() > inside the mount propagation code. Am I overlooking something? You've spelt the function name two different ways? Further, attach_recursive_mnt() calls propagation, not the other way round. David (& Al)