This allows user namespace support to progress, either by allowing snapshotters to deal with ownership, or falling back to containerd doing a recursive chown. In the future, when snapshotters implement idmap mounts, they should report the "remap-ids" capability. Co-authored-by: Rodrigo Campos <rodrigoca@microsoft.com> Signed-off-by: Rodrigo Campos <rodrigoca@microsoft.com> Signed-off-by: David Leadbeater <dgl@dgl.cx>