void pgd_free()

in mm/mm-nds32.c [43:68]

• 23 lines of code
• 4 McCabe index (conditional complexity)

void pgd_free(struct mm_struct *mm, pgd_t * pgd)
{
	pmd_t *pmd;
	struct page *pte;

	if (!pgd)
		return;

	pmd = (pmd_t *) pgd;
	if (pmd_none(*pmd))
		goto free;
	if (pmd_bad(*pmd)) {
		pmd_ERROR(*pmd);
		pmd_clear(pmd);
		goto free;
	}

	pte = pmd_page(*pmd);
	pmd_clear(pmd);
	dec_lruvec_page_state(virt_to_page((unsigned long *)pgd), NR_PAGETABLE);
	pte_free(mm, pte);
	mm_dec_nr_ptes(mm);
	pmd_free(mm, pmd);
free:
	free_pages((unsigned long)pgd, 0);
}