函数buf_page_address_fold

/********************************************************************//**
Calculates a folded value of a file page address to use in the page hash
table.
@return    the folded value */
UNIV_INLINE
ulint
buf_page_address_fold(
/*==================*/
    ulint    space,    /*!< in: space id */
    ulint    offset)    /*!< in: offset of the page within space */
{
    ) + space + offset);
}