opkg: Don't call sync() when installing into an offline root

Even when installing onto a live target system, calling sync() during
package installation is of somewhat questionable benefit.  But calling
it on the build host during rootfs construction is certainly useless and
can cause I/O to stall for several seconds on even a moderately sized
host which is clearly not desirable.

(From a patch originally by Mike Crowe.)

(From OE-Core rev: f48a68177510e8f2d4fcc3725a6dfc41a9a8e96b)

Signed-off-by: Phil Blundell <philb@gnu.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 18 insertions, 0 deletions

diff --git a/meta/recipes-devtools/opkg/opkg/opkg-no-sync-offline.patch b/meta/recipes-devtools/opkg/opkg/opkg-no-sync-offline.patch
new file mode 100644
index 0000000000..b1b3453484
--- /dev/null
+++ b/meta/recipes-devtools/opkg/opkg/opkg-no-sync-offline.patch
@@ -0,0 +1,18 @@
+When installing into an offline root, calling sync() is pointless and just 
+hurts performance.  Don't let's do that.
+
+Signed-off-by: Phil Blundell <philb@gnu.org>
+Upstream-Status: Pending
+
+--- a/libopkg/opkg_cmd.c        2011-09-08 10:53:07.000000000 +0100
++++ b/libopkg/opkg_cmd.c        2011-10-04 10:45:22.278615584 +0100
+@@ -64,7 +64,8 @@ write_status_files_if_changed(void)
+          opkg_msg(INFO, "Writing status file.\n");
+          opkg_conf_write_status_files();
+          pkg_write_changed_filelists();
+-         sync();
++         if (!conf->offline_root)
++             sync();
+      } else {
+          opkg_msg(DEBUG, "Nothing to be done.\n");
+      }