diff options
Diffstat (limited to 'include/linux/mm.h')
| -rw-r--r-- | include/linux/mm.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index f28f46eade6a..d354a72e6127 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1477,9 +1477,15 @@ static inline void pgtable_page_dtor(struct page *page) #if USE_SPLIT_PMD_PTLOCKS +static struct page *pmd_to_page(pmd_t *pmd) +{ + unsigned long mask = ~(PTRS_PER_PMD * sizeof(pmd_t) - 1); + return virt_to_page((void *)((unsigned long) pmd & mask)); +} + static inline spinlock_t *pmd_lockptr(struct mm_struct *mm, pmd_t *pmd) { - return ptlock_ptr(virt_to_page(pmd)); + return ptlock_ptr(pmd_to_page(pmd)); } static inline bool pgtable_pmd_page_ctor(struct page *page) @@ -1498,7 +1504,7 @@ static inline void pgtable_pmd_page_dtor(struct page *page) ptlock_free(page); } -#define pmd_huge_pte(mm, pmd) (virt_to_page(pmd)->pmd_huge_pte) +#define pmd_huge_pte(mm, pmd) (pmd_to_page(pmd)->pmd_huge_pte) #else |