Merge pull request #955 from jeffhostetler/jeffhostetler/preload_index_perf

preload-index: avoid lstat for skip-worktree items

Author: dscho

preload-index.c

@@ -53,6 +53,8 @@ static void *preload_thread(void *_data)
 			continue;
 		if (ce_uptodate(ce))
 			continue;
+		if (ce_skip_worktree(ce))
+			continue;
 		if (!ce_path_match(ce, &p->pathspec, NULL))
 			continue;
 		if (threaded_has_symlink_leading_path(&cache, ce->name, ce_namelen(ce)))