7168bdce5b
When creating multiple concurrent volumes, there's a lock that prevents mount from returning quickly. Reading /proc/mounts is way faster. Change-Id: If31d120955eb216823a55005fdd3d24870aa6b9a Closes-Bug: #1856889 (cherry picked from commit f2409608473c06892b087e44e0041c9ade3f9924) (cherry picked from commit a8190cd60b59dedb11a8ed27d236d81adee3255d)