diff options
| author | Vivek Goyal <vgoyal@redhat.com> | 2020-02-28 19:34:56 +0300 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2020-04-03 05:15:03 +0300 |
| commit | 4f3b4f161d7a070d2181dbcf7fbd97c7631d5c24 (patch) | |
| tree | 21bbf50c24f916831cfc041fcbcc17aa42dca1d9 /include/linux/dax.h | |
| parent | 0a23f9ffa5ac20d3c95a6e850f4ee68e4034f781 (diff) | |
| download | linux-4f3b4f161d7a070d2181dbcf7fbd97c7631d5c24.tar.xz | |
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().
Suggested-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20200228163456.1587-7-vgoyal@redhat.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'include/linux/dax.h')
| -rw-r--r-- | include/linux/dax.h | 17 |
1 files changed, 3 insertions, 14 deletions
diff --git a/include/linux/dax.h b/include/linux/dax.h index 71735c430c05..d7af5d243f24 100644 --- a/include/linux/dax.h +++ b/include/linux/dax.h @@ -13,6 +13,7 @@ typedef unsigned long dax_entry_t; struct iomap_ops; +struct iomap; struct dax_device; struct dax_operations { /* @@ -214,20 +215,8 @@ vm_fault_t dax_finish_sync_fault(struct vm_fault *vmf, int dax_delete_mapping_entry(struct address_space *mapping, pgoff_t index); int dax_invalidate_mapping_entry_sync(struct address_space *mapping, pgoff_t index); - -#ifdef CONFIG_FS_DAX -int __dax_zero_page_range(struct block_device *bdev, - struct dax_device *dax_dev, sector_t sector, - unsigned int offset, unsigned int length); -#else -static inline int __dax_zero_page_range(struct block_device *bdev, - struct dax_device *dax_dev, sector_t sector, - unsigned int offset, unsigned int length) -{ - return -ENXIO; -} -#endif - +int dax_iomap_zero(loff_t pos, unsigned offset, unsigned size, + struct iomap *iomap); static inline bool dax_mapping(struct address_space *mapping) { return mapping->host && IS_DAX(mapping->host); |