Re: [next-20210820][ppc][nvme/raid] pci unbind WARNS at fs/kernfs/dir.c:1524 kernfs_remove_by_name_ns+

[Christoph Hellwig]

Are you sure this is the very latest linux-next?  This should hav been
fixed by:

    "block: add back the bd_holder_dir reference in bd_link_disk_holder"