[Qemu-devel] [PATCH v3 01/14] block: Lift some BDS functions to the BlockBackend

[Max Reitz <mreitz@redhat.com>]

Create the blk_* counterparts for the following bdrv_* functions (which
make sense to call on the BlockBackend level):
- bdrv_co_write_zeroes()
- bdrv_write_compressed()
- bdrv_truncate()
- bdrv_discard()
- bdrv_load_vmstate()
- bdrv_save_vmstate()

Signed-off-by: Max Reitz <mreitz@redhat.com>
---
 block/block-backend.c          | 33 +++++++++++++++++++++++++++++++++
 include/sysemu/block-backend.h |  9 +++++++++
 2 files changed, 42 insertions(+)

diff --git a/block/block-backend.c b/block/block-backend.c
index d00c129..b359545 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -663,3 +663,36 @@ void *blk_aio_get(const AIOCBInfo *aiocb_info, BlockBackend *blk,
 {
     return qemu_aio_get(aiocb_info, blk_bs(blk), cb, opaque);
 }
+
+int coroutine_fn blk_co_write_zeroes(BlockBackend *blk, int64_t sector_num,
+                                     int nb_sectors, BdrvRequestFlags flags)
+{
+    return bdrv_co_write_zeroes(blk->bs, sector_num, nb_sectors, flags);
+}
+
+int blk_write_compressed(BlockBackend *blk, int64_t sector_num,
+                         const uint8_t *buf, int nb_sectors)
+{
+    return bdrv_write_compressed(blk->bs, sector_num, buf, nb_sectors);
+}
+
+int blk_truncate(BlockBackend *blk, int64_t offset)
+{
+    return bdrv_truncate(blk->bs, offset);
+}
+
+int blk_discard(BlockBackend *blk, int64_t sector_num, int nb_sectors)
+{
+    return bdrv_discard(blk->bs, sector_num, nb_sectors);
+}
+
+int blk_save_vmstate(BlockBackend *blk, const uint8_t *buf,
+                     int64_t pos, int size)
+{
+    return bdrv_save_vmstate(blk->bs, buf, pos, size);
+}
+
+int blk_load_vmstate(BlockBackend *blk, uint8_t *buf, int64_t pos, int size)
+{
+    return bdrv_load_vmstate(blk->bs, buf, pos, size);
+}
diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h
index 8871a02..38afa79 100644
--- a/include/sysemu/block-backend.h
+++ b/include/sysemu/block-backend.h
@@ -150,5 +150,14 @@ BlockAcctStats *blk_get_stats(BlockBackend *blk);
 
 void *blk_aio_get(const AIOCBInfo *aiocb_info, BlockBackend *blk,
                   BlockCompletionFunc *cb, void *opaque);
+int coroutine_fn blk_co_write_zeroes(BlockBackend *blk, int64_t sector_num,
+                                     int nb_sectors, BdrvRequestFlags flags);
+int blk_write_compressed(BlockBackend *blk, int64_t sector_num,
+                         const uint8_t *buf, int nb_sectors);
+int blk_truncate(BlockBackend *blk, int64_t offset);
+int blk_discard(BlockBackend *blk, int64_t sector_num, int nb_sectors);
+int blk_save_vmstate(BlockBackend *blk, const uint8_t *buf,
+                     int64_t pos, int size);
+int blk_load_vmstate(BlockBackend *blk, uint8_t *buf, int64_t pos, int size);
 
 #endif
-- 
2.1.0