inode_reserved_space
return *inode_reserved_space(inode);
*inode_reserved_space(inode) += number;
*inode_reserved_space(inode) += number;
*inode_reserved_space(inode) -= number;
*inode_reserved_space(inode) -= number;
*inode_reserved_space(inode) += number;
*inode_reserved_space(inode) += number;
*inode_reserved_space(inode) -= number;
*inode_reserved_space(inode) -= number;