bcachefs: Always descend to leaf nodes it btree_gc

If a btree node is unreadable, it's the topology repair that fixes that
and it's kicked off by btree_gc, so btree_gc needs to touch every node
and very that they can be read.

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
This commit is contained in:
Kent Overstreet 2022-06-22 22:53:43 -04:00 • committed by Kent Overstreet
commit 7a47d0993b