diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/rmap.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/linux/rmap.h b/include/linux/rmap.h index 15321fb1df6b..b76343610653 100644 --- a/include/linux/rmap.h +++ b/include/linux/rmap.h @@ -9,6 +9,7 @@ #include <linux/mm.h> #include <linux/rwsem.h> #include <linux/memcontrol.h> +#include <linux/highmem.h> /* * The anon_vma heads a list of private "related" vmas, to scan if @@ -232,6 +233,31 @@ static inline bool page_check_address_transhuge(struct page *page, } #endif +/* Avoid racy checks */ +#define PVMW_SYNC (1 << 0) +/* Look for migarion entries rather than present PTEs */ +#define PVMW_MIGRATION (1 << 1) + +struct page_vma_mapped_walk { + struct page *page; + struct vm_area_struct *vma; + unsigned long address; + pmd_t *pmd; + pte_t *pte; + spinlock_t *ptl; + unsigned int flags; +}; + +static inline void page_vma_mapped_walk_done(struct page_vma_mapped_walk *pvmw) +{ + if (pvmw->pte) + pte_unmap(pvmw->pte); + if (pvmw->ptl) + spin_unlock(pvmw->ptl); +} + +bool page_vma_mapped_walk(struct page_vma_mapped_walk *pvmw); + /* * Used by swapoff to help locate where page is expected in vma. */ |