From: Zhi Yong Wu <wu...@linux.vnet.ibm.com>
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
Signed-off-by: Zhi Yong Wu <wu...@linux.vnet.ibm.com>
---
block.c | 16 +++++++++++++++-
1 files changed, 15 insertions(+), 1 deletions(-)
diff --git a/block.c b/block.c
index b88ee90..1fbf4dd 100644
--- a/block.c
+++ b/block.c
@@ -862,8 +862,22 @@ void bdrv_close_all(void)
void bdrv_drain_all(void)
{
BlockDriverState *bs;
+ bool busy;
- qemu_aio_flush();
+ do {
+ busy = false;
+ qemu_aio_flush();
+
+ /* FIXME: We do not have timer support here, so this is effectively
+ * a busy wait.
+ */
+ QTAILQ_FOREACH(bs, &bdrv_states, list) {
+ if (!qemu_co_queue_empty(&bs->throttled_reqs)) {
+ qemu_co_queue_restart_all(&bs->throttled_reqs);
+ busy = true;
+ }
+ }
+ } while (busy);
/* If requests are still pending there is a bug somewhere */
QTAILQ_FOREACH(bs, &bdrv_states, list) {
--
1.7.6
--
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