dax,iomap: Add helper dax_iomap_zero() to zero a range

Add a helper dax_ioamp_zero() to zero a range. This patch basically merges __dax_zero_page_range() and iomap_dax_zero().

Vivek Goyal committed 6 years ago

Commit 4f3b4f11 parent 0a23f9f3 files · +12 −30Browse files

Showing the changes to include/linux (1 of 3 files). Show all

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@@ -13,6 +13,7 @@ · 12 unmodified lines
13	13	typedef unsigned long dax_entry_t;
14	14
15	15	struct iomap_ops;
	16	+struct iomap;
16	17	struct dax_device;
17	18	struct dax_operations {
18	19	/*
@@ -214,20 +215,8 @@ vm_fault_t dax_finish_sync_fault(struct vm_fault *vmf, · 195 unmodified lines
214	215	int dax_delete_mapping_entry(struct address_space *mapping, pgoff_t index);
215	216	int dax_invalidate_mapping_entry_sync(struct address_space *mapping,
216	217	pgoff_t index);
217		−
218		−#ifdef CONFIG_FS_DAX
219		−int __dax_zero_page_range(struct block_device *bdev,
220		− struct dax_device *dax_dev, sector_t sector,
221		− unsigned int offset, unsigned int length);
222		−#else
223		−static inline int __dax_zero_page_range(struct block_device *bdev,
224		− struct dax_device *dax_dev, sector_t sector,
225		− unsigned int offset, unsigned int length)
226		−{
227		− return -ENXIO;
228		−}
229		−#endif
230		−
	218	+int dax_iomap_zero(loff_t pos, unsigned offset, unsigned size,
	219	+ struct iomap *iomap);
231	220	static inline bool dax_mapping(struct address_space *mapping)
232	221	{
233	222	return mapping->host && IS_DAX(mapping->host);