6 #include <asm/pgtable.h>
8 ssize_t dax_do_io(struct kiocb *, struct inode *, struct iov_iter *, loff_t,
9 get_block_t, dio_iodone_t, int flags);
10 int dax_clear_sectors(struct block_device *bdev, sector_t _sector, long _size);
11 int dax_zero_page_range(struct inode *, loff_t from, unsigned len, get_block_t);
12 int dax_truncate_page(struct inode *, loff_t from, get_block_t);
13 int dax_fault(struct vm_area_struct *, struct vm_fault *, get_block_t,
15 int __dax_fault(struct vm_area_struct *, struct vm_fault *, get_block_t,
19 struct page *read_dax_sector(struct block_device *bdev, sector_t n);
21 static inline struct page *read_dax_sector(struct block_device *bdev,
24 return ERR_PTR(-ENXIO);
28 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
29 int dax_pmd_fault(struct vm_area_struct *, unsigned long addr, pmd_t *,
30 unsigned int flags, get_block_t, dax_iodone_t);
31 int __dax_pmd_fault(struct vm_area_struct *, unsigned long addr, pmd_t *,
32 unsigned int flags, get_block_t, dax_iodone_t);
34 static inline int dax_pmd_fault(struct vm_area_struct *vma, unsigned long addr,
35 pmd_t *pmd, unsigned int flags, get_block_t gb,
38 return VM_FAULT_FALLBACK;
40 #define __dax_pmd_fault dax_pmd_fault
42 int dax_pfn_mkwrite(struct vm_area_struct *, struct vm_fault *);
43 #define dax_mkwrite(vma, vmf, gb, iod) dax_fault(vma, vmf, gb, iod)
44 #define __dax_mkwrite(vma, vmf, gb, iod) __dax_fault(vma, vmf, gb, iod)
46 static inline bool vma_is_dax(struct vm_area_struct *vma)
48 return vma->vm_file && IS_DAX(vma->vm_file->f_mapping->host);
51 static inline bool dax_mapping(struct address_space *mapping)
53 return mapping->host && IS_DAX(mapping->host);
56 struct writeback_control;
57 int dax_writeback_mapping_range(struct address_space *mapping,
58 struct block_device *bdev, struct writeback_control *wbc);