tree 52f90ec6a3397ef2e011bed44457f22d78ca51e6
parent f4318709ff5bd808a5fb8dd360acd9b66253a24e
author Ben Chan <benchan@chromium.org> 1349675695 -0700
committer Gerrit <chrome-bot@google.com> 1349727247 -0700

Make unit tests less timing sensitive when unmounting busy loop devices.

This CL modifies utils::UnmountFilesystem() to retry when umount()
fails to unmount a busy loop device and replaces several unit tests to
use the modified utils::UnmountFilesystem() instead of calling
System("umount").

BUG=chromium-os:35112
TEST=Run unit tests repeatedly.

Change-Id: I42978f02b4797c68acbec6c351ea2663b9ec7b59
Reviewed-on: https://gerrit.chromium.org/gerrit/34862
Reviewed-by: Ben Chan <benchan@chromium.org>
Tested-by: Ben Chan <benchan@chromium.org>
Commit-Ready: Ben Chan <benchan@chromium.org>