int dm_thin_find_block(struct dm_thin_device *td, dm_block_t block,
int can_issue_io, struct dm_thin_lookup_result *result);
+/*
+ * Retrieve the next run of contiguously mapped blocks. Useful for working
+ * out where to break up IO. Returns 0 on success, < 0 on error.
+ */
+int dm_thin_find_mapped_range(struct dm_thin_device *td,
+ dm_block_t begin, dm_block_t end,
+ dm_block_t *thin_begin, dm_block_t *thin_end,
+ dm_block_t *pool_begin, bool *maybe_shared);
+
/*
* Obtain an unused block.
*/
dm_block_t data_block);
int dm_thin_remove_block(struct dm_thin_device *td, dm_block_t block);
+int dm_thin_remove_range(struct dm_thin_device *td,
+ dm_block_t begin, dm_block_t end);
/*
* Queries.