diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/mm.h | 2 | ||||
| -rw-r--r-- | include/linux/pfn_t.h | 27 |
2 files changed, 28 insertions, 1 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 8bb0907a3603..a9902152449f 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2107,7 +2107,7 @@ int vm_insert_page(struct vm_area_struct *, unsigned long addr, struct page *); int vm_insert_pfn(struct vm_area_struct *vma, unsigned long addr, unsigned long pfn); int vm_insert_mixed(struct vm_area_struct *vma, unsigned long addr, - unsigned long pfn); + pfn_t pfn); int vm_iomap_memory(struct vm_area_struct *vma, phys_addr_t start, unsigned long len); diff --git a/include/linux/pfn_t.h b/include/linux/pfn_t.h index c557a0e0b20c..bdaa275d7623 100644 --- a/include/linux/pfn_t.h +++ b/include/linux/pfn_t.h @@ -64,4 +64,31 @@ static inline pfn_t page_to_pfn_t(struct page *page) { return pfn_to_pfn_t(page_to_pfn(page)); } + +static inline int pfn_t_valid(pfn_t pfn) +{ + return pfn_valid(pfn_t_to_pfn(pfn)); +} + +#ifdef CONFIG_MMU +static inline pte_t pfn_t_pte(pfn_t pfn, pgprot_t pgprot) +{ + return pfn_pte(pfn_t_to_pfn(pfn), pgprot); +} +#endif + +#ifdef __HAVE_ARCH_PTE_DEVMAP +static inline bool pfn_t_devmap(pfn_t pfn) +{ + const unsigned long flags = PFN_DEV|PFN_MAP; + + return (pfn.val & flags) == flags; +} +#else +static inline bool pfn_t_devmap(pfn_t pfn) +{ + return false; +} +pte_t pte_mkdevmap(pte_t pte); +#endif #endif /* _LINUX_PFN_T_H_ */ |