tree 796049268fa7a90ee87f2f01a109354f7a54ce01
parent c24f72cc7ca829bbad0532ddf315ace3ae1c359e
author Joel Becker <joel.becker@oracle.com> 1170500660 -0800
committer Mark Fasheh <mark.fasheh@oracle.com> 1173908232 -0700

ocfs2: Concurrent access of o2hb_region->hr_task was not locked

This means that a build-up and a teardown could race which would result in a
double-kthread_stop().

Protect the setting and clearing of hr_task with o2hb_live_lock, as it's not
a common thing and not performance critical.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>