mark_t mark; ///< Marker used to keep trace of free/used pages.
pgoff_t pgoff; ///< Page offset inside file.
fill_t fill; ///< Filled bytes in page.
mark_t mark; ///< Marker used to keep trace of free/used pages.
pgoff_t pgoff; ///< Page offset inside file.
fill_t fill; ///< Filled bytes in page.