From 17e21a9f248d3d330acdfb2405c23b8d84c9c23a Mon Sep 17 00:00:00 2001
From: Kent Overstreet <kmo@daterainc.com>
Date: Fri, 26 Jul 2013 12:32:38 -0700
Subject: [PATCH] bcache: Have btree_split() insert into parent directly

The flow control in btree_insert_node() was... fragile... before,
this'll use more stack (but since our btrees are never more than depth
1, that shouldn't matter) and it should be significantly clearer and
less fragile.

Signed-off-by: Kent Overstreet <kmo@daterainc.com>
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