Man pages matching name blkdiscard in section 8:

blkdiscard.8.de	debian 10 / manpages-de
blkdiscard.8.en	debian 10 / util-linux
blkdiscard.8.de	debian 11 / manpages-de
blkdiscard.8.fr	debian 11 / manpages-fr
blkdiscard.8.en	debian 11 / util-linux
blkdiscard.8.de	debian 12 / manpages-de
blkdiscard.8.fr	debian 12 / manpages-fr
blkdiscard.8.uk	debian 12 / manpages-uk
blkdiscard.8.en	debian 12 / util-linux