bcachefs: fsck: inode_walker: last_pos, seen_this_pos

Prep work for changing check_extent() to avoid
key_visible_in_snapshot() - this adds the state to track whether an
inode has seen an extent at this pos.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2023-07-16 14:24:36 -04:00
commit f9f52bc4f0