btrfs_create_free_space_tree 3248 fs/btrfs/disk-io.c 		ret = btrfs_create_free_space_tree(fs_info);
btrfs_create_free_space_tree   20 fs/btrfs/free-space-tree.h int btrfs_create_free_space_tree(struct btrfs_fs_info *fs_info);