diff options
Diffstat (limited to 'include/linux/dax.h')
| -rw-r--r-- | include/linux/dax.h | 53 |
1 files changed, 42 insertions, 11 deletions
diff --git a/include/linux/dax.h b/include/linux/dax.h index df41a0017b31..9d624f4d9df6 100644 --- a/include/linux/dax.h +++ b/include/linux/dax.h @@ -26,7 +26,7 @@ struct dax_operations { * number of pages available for DAX at that pfn. */ long (*direct_access)(struct dax_device *, pgoff_t, long, - enum dax_access_mode, void **, pfn_t *); + enum dax_access_mode, void **, unsigned long *); /* zero_page_range: required operation. Zero page range */ int (*zero_page_range)(struct dax_device *, pgoff_t, size_t); /* @@ -65,12 +65,13 @@ size_t dax_recovery_write(struct dax_device *dax_dev, pgoff_t pgoff, /* * Check if given mapping is supported by the file / underlying device. */ -static inline bool daxdev_mapping_supported(struct vm_area_struct *vma, - struct dax_device *dax_dev) +static inline bool daxdev_mapping_supported(vm_flags_t vm_flags, + const struct inode *inode, + struct dax_device *dax_dev) { - if (!(vma->vm_flags & VM_SYNC)) + if (!(vm_flags & VM_SYNC)) return true; - if (!IS_DAX(file_inode(vma->vm_file))) + if (!IS_DAX(inode)) return false; return dax_synchronous(dax_dev); } @@ -110,10 +111,11 @@ static inline void set_dax_nomc(struct dax_device *dax_dev) static inline void set_dax_synchronous(struct dax_device *dax_dev) { } -static inline bool daxdev_mapping_supported(struct vm_area_struct *vma, - struct dax_device *dax_dev) +static inline bool daxdev_mapping_supported(vm_flags_t vm_flags, + const struct inode *inode, + struct dax_device *dax_dev) { - return !(vma->vm_flags & VM_SYNC); + return !(vm_flags & VM_SYNC); } static inline size_t dax_recovery_write(struct dax_device *dax_dev, pgoff_t pgoff, void *addr, size_t bytes, struct iov_iter *i) @@ -207,6 +209,11 @@ int dax_zero_range(struct inode *inode, loff_t pos, loff_t len, bool *did_zero, int dax_truncate_page(struct inode *inode, loff_t pos, bool *did_zero, const struct iomap_ops *ops); +static inline bool dax_page_is_idle(struct page *page) +{ + return page && page_ref_count(page) == 0; +} + #if IS_ENABLED(CONFIG_DAX) int dax_read_lock(void); void dax_read_unlock(int id); @@ -220,10 +227,23 @@ static inline void dax_read_unlock(int id) { } #endif /* CONFIG_DAX */ + +#if !IS_ENABLED(CONFIG_FS_DAX) +static inline int __must_check dax_break_layout(struct inode *inode, + loff_t start, loff_t end, void (cb)(struct inode *)) +{ + return 0; +} + +static inline void dax_break_layout_final(struct inode *inode) +{ +} +#endif + bool dax_alive(struct dax_device *dax_dev); void *dax_get_private(struct dax_device *dax_dev); long dax_direct_access(struct dax_device *dax_dev, pgoff_t pgoff, long nr_pages, - enum dax_access_mode mode, void **kaddr, pfn_t *pfn); + enum dax_access_mode mode, void **kaddr, unsigned long *pfn); size_t dax_copy_from_iter(struct dax_device *dax_dev, pgoff_t pgoff, void *addr, size_t bytes, struct iov_iter *i); size_t dax_copy_to_iter(struct dax_device *dax_dev, pgoff_t pgoff, void *addr, @@ -237,12 +257,23 @@ void dax_flush(struct dax_device *dax_dev, void *addr, size_t size); ssize_t dax_iomap_rw(struct kiocb *iocb, struct iov_iter *iter, const struct iomap_ops *ops); vm_fault_t dax_iomap_fault(struct vm_fault *vmf, unsigned int order, - pfn_t *pfnp, int *errp, const struct iomap_ops *ops); + unsigned long *pfnp, int *errp, + const struct iomap_ops *ops); vm_fault_t dax_finish_sync_fault(struct vm_fault *vmf, - unsigned int order, pfn_t pfn); + unsigned int order, unsigned long pfn); int dax_delete_mapping_entry(struct address_space *mapping, pgoff_t index); +void dax_delete_mapping_range(struct address_space *mapping, + loff_t start, loff_t end); int dax_invalidate_mapping_entry_sync(struct address_space *mapping, pgoff_t index); +int __must_check dax_break_layout(struct inode *inode, loff_t start, + loff_t end, void (cb)(struct inode *)); +static inline int __must_check dax_break_layout_inode(struct inode *inode, + void (cb)(struct inode *)) +{ + return dax_break_layout(inode, 0, LLONG_MAX, cb); +} +void dax_break_layout_final(struct inode *inode); int dax_dedupe_file_range_compare(struct inode *src, loff_t srcoff, struct inode *dest, loff_t destoff, loff_t len, bool *is_same, |