openwrt/tools/qemu/patches/0007-VMDK-flush-multiple-extents.patch

From 49885608e66c1e76a2b715fb36fd2f27f73e5202 Mon Sep 17 00:00:00 2001
From: Fam Zheng <famcool@gmail.com>
Date: Tue, 12 Jul 2011 19:56:33 +0800
Subject: [PATCH 07/12] VMDK: flush multiple extents

Flush all the file that referenced by the image.

Signed-off-by: Fam Zheng <famcool@gmail.com>
Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 block/vmdk.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

--- a/block/vmdk.c
+++ b/block/vmdk.c
@@ -1072,7 +1072,17 @@ static void vmdk_close(BlockDriverState
 
 static int vmdk_flush(BlockDriverState *bs)
 {
-    return bdrv_flush(bs->file);
+    int i, ret, err;
+    BDRVVmdkState *s = bs->opaque;
+
+    ret = bdrv_flush(bs->file);
+    for (i = 0; i < s->num_extents; i++) {
+        err = bdrv_flush(s->extents[i].file);
+        if (err < 0) {
+            ret = err;
+        }
+    }
+    return ret;
 }