nilfs2: get rid of nilfs_bmap_union
This removes nilfs_bmap_union and finally unifies three structures and
the union in bmap/btree code into one.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
diff --git a/fs/nilfs2/gcinode.c b/fs/nilfs2/gcinode.c
index edb53fc..b634382 100644
--- a/fs/nilfs2/gcinode.c
+++ b/fs/nilfs2/gcinode.c
@@ -48,6 +48,8 @@
#include <linux/slab.h>
#include <linux/swap.h>
#include "nilfs.h"
+#include "btree.h"
+#include "btnode.h"
#include "page.h"
#include "mdt.h"
#include "dat.h"