# HG changeset patch
# User Daniel Stodden <daniel.stodden@xxxxxxxxxx>
# Date 1270861240 25200
# Node ID 13337abe91dcaec26a22839c5f0629d310686712
# Parent  aae7cb2f18411492c720d3b60adaa979858a63df
libxc: Flush I/O before xc_domain_save completion.

The final, flushing call to discard_file_cache also discards any
errors from fsync. Call fsync explicitly before leaving, to check if
all VM memory actually made it to the disk.

Signed-off-by: Daniel Stodden <daniel.stodden@xxxxxxxxxx>

diff -r aae7cb2f1841 -r 13337abe91dc tools/libxc/xc_domain_save.c
--- a/tools/libxc/xc_domain_save.c	Fri Apr 09 08:54:25 2010 +0100
+++ b/tools/libxc/xc_domain_save.c	Fri Apr 09 18:00:40 2010 -0700
@@ -1764,6 +1764,13 @@
         goto out;
     }
 
+    /* Flush last write and check for errors. */
+    if ( fsync(io_fd) && errno != EINVAL )
+    {
+        PERROR("Error when flushing state file");
+        goto out;
+    }
+
     /* Success! */
     rc = 0;