[Qemu-block] [RFC PATCH 09/11] block: Introduce bdrv_aio_poll

[Fam Zheng]

This call is introduced simply as a wrapper of aio_poll, but it makes it
is easy to change the polled client types.

Signed-off-by: Fam Zheng <address@hidden>
---
 block/io.c            | 5 +++++
 include/block/block.h | 2 ++
 2 files changed, 7 insertions(+)

diff --git a/block/io.c b/block/io.c
index d4bc83b..fbf9e0f 100644
--- a/block/io.c
+++ b/block/io.c
@@ -2608,3 +2608,8 @@ void bdrv_flush_io_queue(BlockDriverState *bs)
     }
     bdrv_start_throttled_reqs(bs);
 }
+
+bool bdrv_aio_poll(AioContext *ctx, bool blocking)
+{
+    return aio_poll(ctx, blocking);
+}
diff --git a/include/block/block.h b/include/block/block.h
index 37916f7..be99e6d 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -616,4 +616,6 @@ void bdrv_flush_io_queue(BlockDriverState *bs);
 
 BlockAcctStats *bdrv_get_stats(BlockDriverState *bs);
 
+bool bdrv_aio_poll(AioContext *ctx, bool blocking);
+
 #endif
-- 
2.4.3