bcachefs: btree_node_(rewrite|update_key) cleanup

Factor out get_iter_to_node() and use it for
btree_node_rewrite_get_iter(), to be used for fixing btree node write
error behaviour.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2025-02-25 15:04:58 -05:00
commit 2deae55804
3 changed files with 61 additions and 55 deletions