Merge branch 'sh-cleanup-pages-worker' into 'master'

Free open file descriptors and libgit2 buffers in UpdatePagesService

See merge request gitlab-org/gitlab-ce!18099

app/services/projects/update_pages_service.rb

@@ -178,6 +178,9 @@ module Projects
 
     def latest_sha
       project.commit(build.ref).try(:sha).to_s
+    ensure
+      # Close any file descriptors that were opened and free libgit2 buffers
+      project.cleanup
     end
 
     def sha

changelogs/unreleased/sh-cleanup-pages-worker.yml

+---
+title: Free open file descriptors and libgit2 buffers in UpdatePagesService
+merge_request:
+author:
+type: performance