megasas: Use bdrv_drain_all instead of qemu_aio_flush

Calling qemu_aio_flush() directly can hang when combined with I/O
throttling.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/hw/megasas.c b/hw/megasas.c
index 291ff404030c540ddea8b2fc68668243684f8039..61b6527928348984c1d95b43e1bab527ae97f8d7 100644 (file)
--- a/hw/megasas.c
+++ b/hw/megasas.c
@@ -1296,7 +1296,7 @@ static int megasas_dcmd_get_properties(MegasasState *s, MegasasCmd *cmd)
 
 static int megasas_cache_flush(MegasasState *s, MegasasCmd *cmd)
 {
-    qemu_aio_flush();
+    bdrv_drain_all();
     return MFI_STAT_OK;
 }