It's a BlockBackend wrapper of the BDS interface.
Signed-off-by: Fam Zheng <f...@redhat.com>
---
block/block-backend.c | 9 +++++++++
include/sysemu/block-backend.h | 4 ++++
2 files changed, 13 insertions(+)
diff --git a/block/block-backend.c b/block/block-backend.c
index 681b240b12..2a984b1864 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -2217,3 +2217,12 @@ void blk_unregister_buf(BlockBackend *blk, void *host)
{
bdrv_unregister_buf(blk_bs(blk), host);
}
+
+int coroutine_fn blk_co_copy_range(BlockBackend *blk_in, int64_t off_in,
+ BlockBackend *blk_out, int64_t off_out,
+ int bytes, BdrvRequestFlags flags)
+{
+ return bdrv_co_copy_range(blk_in->root, off_in,
+ blk_out->root, off_out,
+ bytes, flags);
+}
diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h
index 92ab624fac..6f043b6b51 100644
--- a/include/sysemu/block-backend.h
+++ b/include/sysemu/block-backend.h
@@ -232,4 +232,8 @@ void blk_set_force_allow_inactivate(BlockBackend *blk);
void blk_register_buf(BlockBackend *blk, void *host, size_t size);
void blk_unregister_buf(BlockBackend *blk, void *host);
+int blk_co_copy_range(BlockBackend *blk_in, int64_t off_in,
+ BlockBackend *blk_out, int64_t off_out,
+ int bytes, BdrvRequestFlags flags);
+
#endif
--
2.14.3
