summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--arch/x86/mm/pgtable.c28
1 files changed, 26 insertions, 2 deletions
diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c
index 1eed7ed518e6..34cda7e0551b 100644
--- a/arch/x86/mm/pgtable.c
+++ b/arch/x86/mm/pgtable.c
@@ -712,7 +712,22 @@ int pmd_clear_huge(pmd_t *pmd)
*/
int pud_free_pmd_page(pud_t *pud)
{
- return pud_none(*pud);
+ pmd_t *pmd;
+ int i;
+
+ if (pud_none(*pud))
+ return 1;
+
+ pmd = (pmd_t *)pud_page_vaddr(*pud);
+
+ for (i = 0; i < PTRS_PER_PMD; i++)
+ if (!pmd_free_pte_page(&pmd[i]))
+ return 0;
+
+ pud_clear(pud);
+ free_page((unsigned long)pmd);
+
+ return 1;
}
/**
@@ -724,6 +739,15 @@ int pud_free_pmd_page(pud_t *pud)
*/
int pmd_free_pte_page(pmd_t *pmd)
{
- return pmd_none(*pmd);
+ pte_t *pte;
+
+ if (pmd_none(*pmd))
+ return 1;
+
+ pte = (pte_t *)pmd_page_vaddr(*pmd);
+ pmd_clear(pmd);
+ free_page((unsigned long)pte);
+
+ return 1;
}
#endif /* CONFIG_HAVE_ARCH_HUGE_VMAP */