[PATCH v2 4/6] block: convert bdrv_drain_all_begin() to AIO_WAIT_WHILE_UNLOCKED()

[Stefan Hajnoczi]

Since the AioContext argument was already NULL, AIO_WAIT_WHILE() was
never going to unlock the AioContext. Therefore it is possible to
replace AIO_WAIT_WHILE() with AIO_WAIT_WHILE_UNLOCKED().

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 block/io.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/block/io.c b/block/io.c
index 8974d46941..db438c7657 100644
--- a/block/io.c
+++ b/block/io.c
@@ -520,7 +520,7 @@ void bdrv_drain_all_begin(void)
     bdrv_drain_all_begin_nopoll();
 
     /* Now poll the in-flight requests */
-    AIO_WAIT_WHILE(NULL, bdrv_drain_all_poll());
+    AIO_WAIT_WHILE_UNLOCKED(NULL, bdrv_drain_all_poll());
 
     while ((bs = bdrv_next_all_states(bs))) {
         bdrv_drain_assert_idle(bs);
-- 
2.39.2