Man pages matching name get_phys_pages in section 3:

get_phys_pages.3.en	debian 10 / manpages-dev
get_phys_pages.3.en	debian 11 / manpages-dev
get_phys_pages.3.en	debian 12 / manpages-dev
get_phys_pages.3.fr	debian 12 / manpages-fr-dev