@@ -134,8 +134,7 @@ static inline unsigned long pmd_pfn(pmd_t pmd)
static inline int pmd_large(pmd_t pte)
{
- return (pmd_flags(pte) & (_PAGE_PSE | _PAGE_PRESENT)) ==
- (_PAGE_PSE | _PAGE_PRESENT);
+ return pmd_flags(pte) & _PAGE_PSE;
}
static inline pte_t pte_set_flags(pte_t pte, pteval_t set)
@@ -327,7 +326,13 @@ static inline int pte_hidden(pte_t pte)
static inline int pmd_present(pmd_t pmd)
{
- return pmd_flags(pmd) & _PAGE_PRESENT;
+ /*
+ * Checking for _PAGE_PSE is needed too because
+ * split_huge_page will temporarily clear the present bit (but
+ * the _PAGE_PSE flag will remain set at all times while the
+ * _PAGE_PRESENT bit is clear).
+ */
+ return pmd_flags(pmd) & (_PAGE_PRESENT | _PAGE_PROTNONE | _PAGE_PSE);
}
static inline int pmd_none(pmd_t pmd)