Drupal XML sitemap cron background batch patch.

drupal-7-xmlsitemap-7.x-2.0-rc2-background-batch.patch

diff --git a/xmlsitemap.module b/xmlsitemap.module
index 93e935f..c48ac31 100644
--- a/xmlsitemap.module
+++ b/xmlsitemap.module
@@ -243,7 +243,16 @@ function xmlsitemap_cron() {

   // Regenerate the sitemap XML files.
   module_load_include('generate.inc', 'xmlsitemap');
-  xmlsitemap_run_unprogressive_batch('xmlsitemap_regenerate_batch');
+
+  // Try to launch the batch process in the background.
+  if (module_exists('background_batch')) {
+    $batch = xmlsitemap_regenerate_batch();
+    batch_set($batch);
+    background_batch_process_batch();
+  }
+  else {
+    xmlsitemap_run_unprogressive_batch('xmlsitemap_regenerate_batch');
+  }
 }

 /**