[ostree] Honor disable_fsync during checkout also

[Vadim Rutkovsky <vrutkovsky src gnome org>]

commit ef0057299945ff1d5e687c46ba65eb470263d3d5
Author: Vadim Rutkovsky <vrutkovs redhat com>
Date:   Wed Jun 4 01:40:32 2014 +0200

    Honor disable_fsync during checkout also
    
    Finally, fsync to ensure all entries are on disk, unless disabled.
     We support disabling this for cases like server-side buildroot
     construction where we don't need to be robust against power loss

 src/libostree/ostree-repo-checkout.c |    9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)
---
diff --git a/src/libostree/ostree-repo-checkout.c b/src/libostree/ostree-repo-checkout.c
index 7bf8328..417e11f 100644
--- a/src/libostree/ostree-repo-checkout.c
+++ b/src/libostree/ostree-repo-checkout.c
@@ -661,10 +661,13 @@ checkout_tree_at (OstreeRepo                        *self,
    * this should be configurable for the case where we're constructing
    * buildroots.
    */
-  if (fsync (destination_dfd) == -1)
+  if (!self->disable_fsync)
     {
-      ot_util_set_error_from_errno (error, errno);
-      goto out;
+    if (fsync (destination_dfd) == -1)
+      {
+        ot_util_set_error_from_errno (error, errno);
+        goto out;
+      }
     }
 
   ret = TRUE;