Seth's upstream patchset adding the mounter's user_ns to the superblock should help to implement the proper "ignore if inode->i_[ug]id not mapped in inode->i_sb->s_userns" semantics. But it is not yet accepted.
Seth's upstream patchset adding the mounter's user_ns to the i_sb->s_ userns" semantics. But it
superblock should help to implement the proper "ignore if
inode->i_[ug]id not mapped in inode->
is not yet accepted.