[RFC,v2,2/7] raw: Implement copy offloading

Commit Message

Fam Zheng April 18, 2018, 3:04 a.m. UTC

Just pass down to ->file.

Signed-off-by: Fam Zheng <[e-mail]>
---
 block/raw-format.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

Comments

Stefan Hajnoczi April 26, 2018, 2:57 p.m. UTC | #1

On Wed, Apr 18, 2018 at 11:04:19AM +0800, Fam Zheng wrote:
> Just pass down to ->file.
> 
> Signed-off-by: Fam Zheng <[e-mail]>
> ---
>  block/raw-format.c | 20 ++++++++++++++++++++
>  1 file changed, 20 insertions(+)

Reviewed-by: Stefan Hajnoczi <[e-mail]>

Patch

diff --git a/block/raw-format.c b/block/raw-format.c
index a378547c99..febddf00c0 100644
--- a/block/raw-format.c
+++ b/block/raw-format.c
@@ -482,6 +482,24 @@  static int raw_probe_geometry(BlockDriverState *bs, HDGeometry *geo)
     return bdrv_probe_geometry(bs->file->bs, geo);
 }
 
+static int coroutine_fn raw_co_copy_range_from(BlockDriverState *bs,
+                                               BdrvChild *src, uint64_t src_offset,
+                                               BdrvChild *dst, uint64_t dst_offset,
+                                               uint64_t bytes, BdrvRequestFlags flags)
+{
+    return bdrv_co_copy_range_from(bs->file, src_offset, dst, dst_offset,
+                                   bytes, flags);
+}
+
+static int coroutine_fn raw_co_copy_range_to(BlockDriverState *bs,
+                                             BdrvChild *src, uint64_t src_offset,
+                                             BdrvChild *dst, uint64_t dst_offset,
+                                             uint64_t bytes, BdrvRequestFlags flags)
+{
+    return bdrv_co_copy_range_to(src, src_offset, bs->file, dst_offset, bytes,
+                                 flags);
+}
+
 BlockDriver bdrv_raw = {
     .format_name          = "raw",
     .instance_size        = sizeof(BDRVRawState),
@@ -498,6 +516,8 @@  BlockDriver bdrv_raw = {
     .bdrv_co_pwrite_zeroes = &raw_co_pwrite_zeroes,
     .bdrv_co_pdiscard     = &raw_co_pdiscard,
     .bdrv_co_block_status = &raw_co_block_status,
+    .bdrv_co_copy_range_from = &raw_co_copy_range_from,
+    .bdrv_co_copy_range_to  = &raw_co_copy_range_to,
     .bdrv_truncate        = &raw_truncate,
     .bdrv_getlength       = &raw_getlength,
     .has_variable_length  = true,