On Thu, Aug 03, 2023 at 03:33:30PM +0200, Jan Kara wrote: > As a side note, after this patch we can also remove bdev->bd_super and > transition the two real users (mark_buffer_write_io_error() and two places > in ocfs2) to use bd_holder. Ext4 also uses bd_super but there it is really > pointless as we have the superblock directly available in that function > anyway. I actually have a series to kill bd_super, but it uses b_assoc_map as the replacement, as nothing in buffer.c should poke into the holder and the buffer_head codes uses b_assoc_map a lot anyway. Let me rebase it and send it out.