sub_bytes
goto sub_bytes;
sub_bytes:
inode_sub_bytes(&inode->vfs_inode, control.sub_bytes);
control->sub_bytes = 0;
control->sub_bytes += num_dec;
control->sub_bytes += num_dec;
control->sub_bytes += item_end + 1 - new_size;
u64 sub_bytes;
inode_sub_bytes(&inode->vfs_inode, control.sub_bytes);