From: Glauber Costa <glommer@redhat.com>
Date: Mon, 6 Jul 2009 13:32:09 +0000 (-0400)
Subject: flush pending aio requests
X-Git-Tag: xen-15-06-02~11313
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=0884657b2e39f2cf85dfa99361817fde07e83786;p=people%2Fsstabellini%2Fqemu-dm.git%2F.git

flush pending aio requests

When we finish migration, there may be pending async io requests
in flight. If we don't flush it before stage3 starting, it might be
the case that the guest loses it.

Signed-off-by: Glauber Costa <glommer@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
---

diff --git a/migration.c b/migration.c
index e6c8b16a1f..ee64d410e1 100644
--- a/migration.c
+++ b/migration.c
@@ -266,6 +266,7 @@ void migrate_fd_put_ready(void *opaque)
         dprintf("done iterating\n");
         vm_stop(0);
 
+        qemu_aio_flush();
         bdrv_flush_all();
         if ((qemu_savevm_state_complete(s->file)) < 0) {
             if (old_vm_running) {