free_space_op    2043 fs/btrfs/free-space-cache.c static const struct btrfs_free_space_op free_space_op = {
free_space_op    2063 fs/btrfs/free-space-cache.c 	if (ctl->op == &free_space_op)
free_space_op    2521 fs/btrfs/free-space-cache.c 	ctl->op = &free_space_op;