bcachefs: Fix bch2_btree_increase_depth()

When we haven't yet allocated any btree nodes for a given btree, we
first need to call the regular split path to allocate one.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2024-03-14 19:39:26 -04:00
commit 7f9e508036