From 946d58be1533bf843b499df12e1d9f97b28245c8 Mon Sep 17 00:00:00 2001
From: Kevin Wolf <kwolf@redhat.com>
Date: Tue, 25 Sep 2012 15:47:36 +0200
Subject: [PATCH] block-migration: Flush requests in blk_mig_cleanup

When cancelling block migration, all in-flight requests of the block
migration must be completed before the data can be freed. This was
visible as failing assertions and segfaults.

Reported-by: Peter Lieven <pl@dlhnet.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 block-migration.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/block-migration.c b/block-migration.c
index 7def8ab197..ed933017f9 100644
--- a/block-migration.c
+++ b/block-migration.c
@@ -519,6 +519,8 @@ static void blk_mig_cleanup(void)
     BlkMigDevState *bmds;
     BlkMigBlock *blk;
 
+    bdrv_drain_all();
+
     set_dirty_tracking(0);
 
     while ((bmds = QSIMPLEQ_FIRST(&block_mig_state.bmds_list)) != NULL) {