Man pages matching name gfs_acl_delete_perm in section 3:

gfs_acl_delete_perm.3.en	debian 10 / libgfarm-dev
gfs_acl_delete_perm.3.en	debian 11 / libgfarm-dev
gfs_acl_delete_perm.3.en	debian 12 / libgfarm-dev