diff options
Diffstat (limited to 'include/linux/dax.h')
| -rw-r--r-- | include/linux/dax.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/include/linux/dax.h b/include/linux/dax.h index df41a0017b31..dcc9fcdf14e4 100644 --- a/include/linux/dax.h +++ b/include/linux/dax.h @@ -207,6 +207,11 @@ 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); @@ -220,6 +225,19 @@ 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, @@ -241,8 +259,18 @@ vm_fault_t dax_iomap_fault(struct vm_fault *vmf, unsigned int order, vm_fault_t dax_finish_sync_fault(struct vm_fault *vmf, unsigned int order, pfn_t 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, |