[RFC PATCH 2/6] introduce BDRV_POLL_WHILE_UNLOCKED

[Emanuele Giuseppe Esposito]

Same as BDRV_POLL_WHILE, but uses AIO_WAIT_WHILE_UNLOCKED.

Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
---
 include/block/block-global-state.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/block/block-global-state.h 
b/include/block/block-global-state.h
index 7a6b065101..818164a06b 100644
--- a/include/block/block-global-state.h
+++ b/include/block/block-global-state.h
@@ -158,6 +158,11 @@ void bdrv_drain_all(void);
     AIO_WAIT_WHILE(bdrv_get_aio_context(bs_),              \
                    cond); })
 
+#define BDRV_POLL_WHILE_UNLOCKED(bs, cond) ({              \
+    BlockDriverState *bs_ = (bs);                          \
+    AIO_WAIT_WHILE_UNLOCKED(bdrv_get_aio_context(bs_),     \
+                            cond); })
+
 int bdrv_has_zero_init_1(BlockDriverState *bs);
 int bdrv_has_zero_init(BlockDriverState *bs);
 int bdrv_can_set_read_only(BlockDriverState *bs, bool read_only,
-- 
2.31.1