static void account_shadows(struct super_block *sb)
{
	struct logfs_super *super = logfs_super(sb);
	struct inode *inode = super->s_master_inode;
	struct logfs_inode *li = logfs_inode(inode);
	struct shadow_tree *tree = &super->s_shadow_tree;

	btree_grim_visitor64(&tree->new, (unsigned long)sb, account_shadow);
	btree_grim_visitor64(&tree->old, (unsigned long)sb, account_shadow);
	btree_grim_visitor32(&tree->segment_map, 0, NULL);
	tree->no_shadowed_segments = 0;

	if (li->li_block) {
		li->li_block->ops->free_block(sb, li->li_block);
	}
	BUG_ON((s64)li->li_used_bytes < 0);
}
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static void account_shadows(struct super_block *sb)
{
	struct logfs_super *super = logfs_super(sb);
	struct inode *inode = super->s_master_inode;
	struct logfs_inode *li = logfs_inode(inode);
	struct shadow_tree *tree = &super->s_shadow_tree;

	btree_grim_visitor64(&tree->new, (unsigned long)sb, account_shadow);
	btree_grim_visitor64(&tree->old, (unsigned long)sb, account_shadow);

	if (li->li_block) {
		/*
		 * We never actually use the structure, when attached to the
		 * master inode.  But it is easier to always free it here than
		 * to have checks in several places elsewhere when allocating
		 * it.
		 */
		li->li_block->ops->free_block(sb, li->li_block);
	}
	BUG_ON((s64)li->li_used_bytes < 0);
}