saltstack/salt — pull request #1262 by techhat (2012-05-11 14:26:43+00:00)
Title: Update mount.active with better file handle, remove more expensive call

As per suggestion from SEJeff, I have switched the syntax to use with open() as fh. Additionally, I realized that all of the information that we were using from the mount command was available in this file handle, which is now already being used, and which is cheaper. So I changed it to use that entirely instead.