On Sun, 15 Nov 2020 11:36:39 +0100 Christian Brauner <christian.brauner@xxxxxxxxxx> wrote: One quick question... > I have written a simple tool available at > https://github.com/brauner/mount-idmapped that allows to create idmapped > mounts so people can play with this patch series. I spent a while looking at that tool. When actually setting the namespace for the mapping, it uses MOUNT_ATTR_SHIFT rather than MOUNT_ATTR_IDMAP. The value is the same, so I expect it works...:) But did that perhaps not get updated to reflect a name change? Thanks, jon