[Xen-devel] [RFC Patch v2 13/16] xc_domain_save: flush cache before calling callbacks->postcopy()

[Wen Congyang <wency@xxxxxxxxxxxxxx>]

callbacks->postcopy() may use the fd to transfer something to the
other end, so we should flush cache before calling callbacks->postcopy()

Signed-off-by: Ye Wei <wei.ye1987@xxxxxxxxx>
Signed-off-by: Jiang Yunhong <yunhong.jiang@xxxxxxxxx>
Signed-off-by: Wen Congyang <wency@xxxxxxxxxxxxxx>
---
 tools/libxc/xc_domain_save.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/libxc/xc_domain_save.c b/tools/libxc/xc_domain_save.c
index fbc15e9..b477188 100644
--- a/tools/libxc/xc_domain_save.c
+++ b/tools/libxc/xc_domain_save.c
@@ -2034,9 +2034,6 @@ int xc_domain_save(xc_interface *xch, int io_fd, uint32_t 
dom, uint32_t max_iter
  out:
     completed = 1;
 
-    if ( !rc && callbacks->postcopy )
-        callbacks->postcopy(callbacks->data);
-
     /* guest has been resumed. Now we can compress data
      * at our own pace.
      */
@@ -2066,6 +2063,9 @@ int xc_domain_save(xc_interface *xch, int io_fd, uint32_t 
dom, uint32_t max_iter
 
     discard_file_cache(xch, io_fd, 1 /* flush */);
 
+    if ( !rc && callbacks->postcopy )
+        callbacks->postcopy(callbacks->data);
+
     /* Enable compression now, finally */
     compressing = (flags & XCFLAGS_CHECKPOINT_COMPRESS);
 
-- 
1.7.4


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