bcachefs: Don't downgrade in traverse()

Downgrading of btree iterators is something that should only happen
explicitly.

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
This commit is contained in:
Kent Overstreet 2021-07-20 20:14:44 -04:00 • committed by Kent Overstreet
commit 5f87f3c116