selftests/mm: test fork of PMD-mapped shmem THPs

On 11/4/26 9:40 PM, Konstantin Khorenko wrote: > + pmdsize = read_pmd_pagesize(); read_pmd_pagesize() is pmd_psize() in mm-new since 5d123bb07b18 (“kselftest: mm: rename read_pmd_pagesize() to pmd_psi