btrfs_run_delayed_items_nr  100 fs/btrfs/delayed-inode.h int btrfs_run_delayed_items_nr(struct btrfs_trans_handle *trans, int nr);
btrfs_run_delayed_items_nr  570 fs/btrfs/space-info.c 		ret = btrfs_run_delayed_items_nr(trans, nr);