diff options
Diffstat (limited to 'include/linux/mm.h')
| -rw-r--r-- | include/linux/mm.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index dc3333d6c986..4f4ca41fcf27 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1378,6 +1378,19 @@ static inline void pgtable_page_dtor(struct page *page) ((unlikely(pmd_none(*(pmd))) && __pte_alloc_kernel(pmd, address))? \ NULL: pte_offset_kernel(pmd, address)) +static inline spinlock_t *pmd_lockptr(struct mm_struct *mm, pmd_t *pmd) +{ + return &mm->page_table_lock; +} + + +static inline spinlock_t *pmd_lock(struct mm_struct *mm, pmd_t *pmd) +{ + spinlock_t *ptl = pmd_lockptr(mm, pmd); + spin_lock(ptl); + return ptl; +} + extern void free_area_init(unsigned long * zones_size); extern void free_area_init_node(int nid, unsigned long * zones_size, unsigned long zone_start_pfn, unsigned long *zholes_size); |