diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/dax.h | 2 | ||||
| -rw-r--r-- | include/linux/device-mapper.h | 3 |
2 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/dax.h b/include/linux/dax.h index bbe79ed90e2b..28e398f8c59e 100644 --- a/include/linux/dax.h +++ b/include/linux/dax.h @@ -78,6 +78,8 @@ void kill_dax(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, void **kaddr, pfn_t *pfn); +size_t dax_copy_from_iter(struct dax_device *dax_dev, pgoff_t pgoff, void *addr, + size_t bytes, struct iov_iter *i); /* * We use lowest available bit in exceptional entry for locking, one bit for diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index f4c639c0c362..11c8a0a92f9c 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -132,6 +132,8 @@ typedef int (*dm_busy_fn) (struct dm_target *ti); */ typedef long (*dm_dax_direct_access_fn) (struct dm_target *ti, pgoff_t pgoff, long nr_pages, void **kaddr, pfn_t *pfn); +typedef size_t (*dm_dax_copy_from_iter_fn)(struct dm_target *ti, pgoff_t pgoff, + void *addr, size_t bytes, struct iov_iter *i); #define PAGE_SECTORS (PAGE_SIZE / 512) void dm_error(const char *message); @@ -181,6 +183,7 @@ struct target_type { dm_iterate_devices_fn iterate_devices; dm_io_hints_fn io_hints; dm_dax_direct_access_fn direct_access; + dm_dax_copy_from_iter_fn dax_copy_from_iter; /* For internal device-mapper use. */ struct list_head list; |